Neurology

Background: Higher glucose immediately following acute ischemic stroke is known to be associated with poor outcomes. Patients with elevated glucoses in the aftermath of an acute ischemic stroke are more likely to have expansion of ischemic area and are more likely to have hemorrhagic conversion.

Dr. Fritz is assistant professor of medicine and the director of hospitalist operations at St. Louis University School of Medicine.

Background: Higher glucose immediately following acute ischemic stroke is known to be associated with poor outcomes. Patients with elevated glucoses in the aftermath of an acute ischemic stroke are more likely to have expansion of ischemic area and are more likely to have hemorrhagic conversion.

Dr. Fritz is assistant professor of medicine and the director of hospitalist operations at St. Louis University School of Medicine.

Background: Higher glucose immediately following acute ischemic stroke is known to be associated with poor outcomes. Patients with elevated glucoses in the aftermath of an acute ischemic stroke are more likely to have expansion of ischemic area and are more likely to have hemorrhagic conversion.

Dr. Fritz is assistant professor of medicine and the director of hospitalist operations at St. Louis University School of Medicine.

An eye exam may be all that is needed to diagnose Parkinson’s disease, new research shows. Using an advanced machine-learning algorithm and fundus eye images, which depict the small blood vessels and more at the back of the eye, investigators are able to classify patients with Parkinson’s disease compared against a control group. “We discovered that micro blood vessels decreased in both size and number in patients with Parkinson’s disease,” said Maximillian Diaz, a PhD student at the University of Florida, Gainesville.

The simple eye examination may offer a way to diagnose Parkinson’s early in the disease progression.

Mr. Diaz said the test could be incorporated to a patient’s annual physical examination not only to look for Parkinson’s disease but also for other neurological diseases. Researchers at the University of Florida are also looking at whether the same technique can diagnose Alzheimer’s disease.

The beauty of this is that “the technique is simple,” he said. “What surprised us is that we can do this with fundus images, which can be taken in a clinical setting with a lens that attaches to your smartphone. It’s affordable and portable and it takes less than a minute.”
 

Machine learning on fundus eye images

Researchers, under the direction of Ruogu Fang, PhD, director of the J. Crayton Pruitt Department of Biomedical Engineering’s Smart Medical Informatics Learning and Evaluation Lab (SMILE) at the University of Florida, Gainesville, collected fundus eye images from 476 age- and gender-matched individuals, 238 diagnosed with Parkinson’s disease and 238 control group images. Another set of 100 images were collected from the University of Florida database using green color channels (UKB-Green and UF-UKB Green) and used to improve vessel segmentation. Of these, 28 were controls and 72 from patients with Parkinson’s disease. Researchers added 44 more control images from the U.K. Biobank to complete the second age- and gender-matched dataset.

“We used 80% of the images to develop the machine-learning network,” Mr. Diaz said. The other 20% of images, which were new to the algorithm, were used to test it, to determine true or false, Parkinson’s disease or control?

“We were able to achieve an accuracy of 85%,” Mr. Diaz said. Currently, there are no biomarkers to diagnose Parkinson’s disease. The disease is only recognizable once 80% of dopaminergic cells have already decayed. “Clinically, there’s no way to tell how long someone has had it,” Mr. Diaz said. He hopes that by doing additional research and testing earlier – with a longitudinal study of images – a pattern may be detected to better predict disease.
 

Eye vasculature reveals disease

“This concept [studying eye vasculature] is getting a lot of interest right now,” said Anant Madabhushi, PhD, Case Western Reserve University, Cleveland. “The eye is the proverbial window to the soul, and in this case, shows what’s happening in rest of the body.”

Dr. Madabhushi, who was not involved in the Parkinson’s research, has also been working with a team in Cleveland to look at how vessels in the eye predict response to drug therapies in diabetic macular edema, including treatment durability. “What we’ve found is the more twisted the vessels, the more constricted, and the less likely the person would respond to therapy,” he said, adding that studying the pathology of the eye makes a lot of sense. “The arrangement of vessels in the eye are likely to have implications in all kinds of diseases.”

Since Parkinson’s disease does not have any biomarkers, this technology could be very useful in diagnosis. “With specific quantitative measurements, we could have computational imaging biomarkers to predict the risk of onset of Parkinson’s, and the prognosis of disease. That’s the true utility of this approach,” he said.

Mr. Diaz disclosed no relevant financial relationships. Dr. Madabhushi has consulted for Aiforia and has had research sponsored by AstraZeneca, Bristol-Myers Squibb, and Boehringer Ingelheim.

A version of this article originally appeared on Medscape.com.

An eye exam may be all that is needed to diagnose Parkinson’s disease, new research shows. Using an advanced machine-learning algorithm and fundus eye images, which depict the small blood vessels and more at the back of the eye, investigators are able to classify patients with Parkinson’s disease compared against a control group. “We discovered that micro blood vessels decreased in both size and number in patients with Parkinson’s disease,” said Maximillian Diaz, a PhD student at the University of Florida, Gainesville.

The simple eye examination may offer a way to diagnose Parkinson’s early in the disease progression.

Mr. Diaz said the test could be incorporated to a patient’s annual physical examination not only to look for Parkinson’s disease but also for other neurological diseases. Researchers at the University of Florida are also looking at whether the same technique can diagnose Alzheimer’s disease.

The beauty of this is that “the technique is simple,” he said. “What surprised us is that we can do this with fundus images, which can be taken in a clinical setting with a lens that attaches to your smartphone. It’s affordable and portable and it takes less than a minute.”
 

Machine learning on fundus eye images

Researchers, under the direction of Ruogu Fang, PhD, director of the J. Crayton Pruitt Department of Biomedical Engineering’s Smart Medical Informatics Learning and Evaluation Lab (SMILE) at the University of Florida, Gainesville, collected fundus eye images from 476 age- and gender-matched individuals, 238 diagnosed with Parkinson’s disease and 238 control group images. Another set of 100 images were collected from the University of Florida database using green color channels (UKB-Green and UF-UKB Green) and used to improve vessel segmentation. Of these, 28 were controls and 72 from patients with Parkinson’s disease. Researchers added 44 more control images from the U.K. Biobank to complete the second age- and gender-matched dataset.

“We used 80% of the images to develop the machine-learning network,” Mr. Diaz said. The other 20% of images, which were new to the algorithm, were used to test it, to determine true or false, Parkinson’s disease or control?

“We were able to achieve an accuracy of 85%,” Mr. Diaz said. Currently, there are no biomarkers to diagnose Parkinson’s disease. The disease is only recognizable once 80% of dopaminergic cells have already decayed. “Clinically, there’s no way to tell how long someone has had it,” Mr. Diaz said. He hopes that by doing additional research and testing earlier – with a longitudinal study of images – a pattern may be detected to better predict disease.
 

Eye vasculature reveals disease

“This concept [studying eye vasculature] is getting a lot of interest right now,” said Anant Madabhushi, PhD, Case Western Reserve University, Cleveland. “The eye is the proverbial window to the soul, and in this case, shows what’s happening in rest of the body.”

Dr. Madabhushi, who was not involved in the Parkinson’s research, has also been working with a team in Cleveland to look at how vessels in the eye predict response to drug therapies in diabetic macular edema, including treatment durability. “What we’ve found is the more twisted the vessels, the more constricted, and the less likely the person would respond to therapy,” he said, adding that studying the pathology of the eye makes a lot of sense. “The arrangement of vessels in the eye are likely to have implications in all kinds of diseases.”

Since Parkinson’s disease does not have any biomarkers, this technology could be very useful in diagnosis. “With specific quantitative measurements, we could have computational imaging biomarkers to predict the risk of onset of Parkinson’s, and the prognosis of disease. That’s the true utility of this approach,” he said.

Mr. Diaz disclosed no relevant financial relationships. Dr. Madabhushi has consulted for Aiforia and has had research sponsored by AstraZeneca, Bristol-Myers Squibb, and Boehringer Ingelheim.

A version of this article originally appeared on Medscape.com.

An eye exam may be all that is needed to diagnose Parkinson’s disease, new research shows. Using an advanced machine-learning algorithm and fundus eye images, which depict the small blood vessels and more at the back of the eye, investigators are able to classify patients with Parkinson’s disease compared against a control group. “We discovered that micro blood vessels decreased in both size and number in patients with Parkinson’s disease,” said Maximillian Diaz, a PhD student at the University of Florida, Gainesville.

The simple eye examination may offer a way to diagnose Parkinson’s early in the disease progression.

Mr. Diaz said the test could be incorporated to a patient’s annual physical examination not only to look for Parkinson’s disease but also for other neurological diseases. Researchers at the University of Florida are also looking at whether the same technique can diagnose Alzheimer’s disease.

The beauty of this is that “the technique is simple,” he said. “What surprised us is that we can do this with fundus images, which can be taken in a clinical setting with a lens that attaches to your smartphone. It’s affordable and portable and it takes less than a minute.”
 

Machine learning on fundus eye images

Researchers, under the direction of Ruogu Fang, PhD, director of the J. Crayton Pruitt Department of Biomedical Engineering’s Smart Medical Informatics Learning and Evaluation Lab (SMILE) at the University of Florida, Gainesville, collected fundus eye images from 476 age- and gender-matched individuals, 238 diagnosed with Parkinson’s disease and 238 control group images. Another set of 100 images were collected from the University of Florida database using green color channels (UKB-Green and UF-UKB Green) and used to improve vessel segmentation. Of these, 28 were controls and 72 from patients with Parkinson’s disease. Researchers added 44 more control images from the U.K. Biobank to complete the second age- and gender-matched dataset.

“We used 80% of the images to develop the machine-learning network,” Mr. Diaz said. The other 20% of images, which were new to the algorithm, were used to test it, to determine true or false, Parkinson’s disease or control?

“We were able to achieve an accuracy of 85%,” Mr. Diaz said. Currently, there are no biomarkers to diagnose Parkinson’s disease. The disease is only recognizable once 80% of dopaminergic cells have already decayed. “Clinically, there’s no way to tell how long someone has had it,” Mr. Diaz said. He hopes that by doing additional research and testing earlier – with a longitudinal study of images – a pattern may be detected to better predict disease.
 

Eye vasculature reveals disease

“This concept [studying eye vasculature] is getting a lot of interest right now,” said Anant Madabhushi, PhD, Case Western Reserve University, Cleveland. “The eye is the proverbial window to the soul, and in this case, shows what’s happening in rest of the body.”

Dr. Madabhushi, who was not involved in the Parkinson’s research, has also been working with a team in Cleveland to look at how vessels in the eye predict response to drug therapies in diabetic macular edema, including treatment durability. “What we’ve found is the more twisted the vessels, the more constricted, and the less likely the person would respond to therapy,” he said, adding that studying the pathology of the eye makes a lot of sense. “The arrangement of vessels in the eye are likely to have implications in all kinds of diseases.”

Since Parkinson’s disease does not have any biomarkers, this technology could be very useful in diagnosis. “With specific quantitative measurements, we could have computational imaging biomarkers to predict the risk of onset of Parkinson’s, and the prognosis of disease. That’s the true utility of this approach,” he said.

Mr. Diaz disclosed no relevant financial relationships. Dr. Madabhushi has consulted for Aiforia and has had research sponsored by AstraZeneca, Bristol-Myers Squibb, and Boehringer Ingelheim.

A version of this article originally appeared on Medscape.com.

An international panel of experts has published the first set of recommendations based on current clinical practices and scientific evidence for using ketogenic diet therapies in adults with drug-resistant epilepsy.

Just as in children with epilepsy, ketogenic diet therapies can be safe and effective in adults with epilepsy but should only be undertaken with the support of medical professionals trained in their use, the group said.

Novel in adult neurology

Ketogenic diet therapies are high-fat, low-carbohydrate, and adequate-protein diets that induce fat metabolism and ketone production. Despite its use as an effective antiseizure therapy since the 1920s, ketogenic diet therapies remain novel in adult neurology.

Furthermore, while there are established guidelines for ketogenic diet therapies to reduce seizures in children, there were no formal recommendations for adults, until now.

Drawing on the experience of experts at 20 centers using ketogenic diet therapies in more than 2,100 adults with epilepsy in 10 countries, Dr. Cervenka and an international team developed recommendations on use of ketogenic diet therapies in adults.

The panel noted, “with a relatively mild side effect profile and the potential to reduce seizures in nearly 60% of adults with drug-resistant epilepsy, ketogenic diet therapies should be part of the repertoire of available options.”

Ketogenic diet therapies are appropriate to offer to adults with seizure types and epilepsy syndromes for which these treatments are known to be effective in children, they said. These include tuberous sclerosis complex, Rett syndrome, Lennox-Gastaut syndrome, glucose transporter type 1 deficiency syndrome, genetic generalized epilepsies, and focal epilepsies caused by underlying migrational disorders and resistant to antiseizure medication.

However, adults with drug-resistant focal epilepsy should be offered surgical evaluation first, given the higher anticipated rate of seizure freedom via this route, the panel said.
 

A focus on compliance

Experts at nearly all of the centers report using two or more ketogenic diet therapies. Ninety percent use the modified Atkins diet, 84% use the classic ketogenic diet, and 63% use the modified ketogenic diet and/or low glycemic index treatment. More than half of the centers (58%) use medium-chain triglyceride oil in combination with another ketogenic diet therapy to boost ketone body production.

The most important factors influencing the choice of ketogenic diet therapy are ease of diet application for the patient (100%) and patient and/or caregiver preference, home setting, and mode of feeding (90% each).

The panel recommended that ketogenic diet therapies be tailored to fit the needs of the individual, taking into account his or her physical and mental characteristics, underlying medical conditions, food preferences, type and amount of support from family and others, level of self-sufficiency, feeding habits, and ease of following the diet.

“Most of the differences between the child and adult recommendations have to do with compliance. Often, it’s more of a challenge for adults than for children,” said Dr. Cervenka.

The panel recommended providing adult patients with recipe ideas, individualized training on the ketogenic diet lifestyle from a dietitian or nutritionist, and guidance for meal planning and preparation before starting the diet. This will provide the greatest likelihood of success, as patients often report difficulties coping with carbohydrate restriction.

“In pediatric practice, positive responders typically remain on a ketogenic diet therapy for 2 years before considering weaning. Ketogenic diet therapy in adults is not time-limited. However, a minimum of 3 months of ketogenic diet therapy is recommended before any judgment of response is made,” the panel advised.

The panel pointed out the absolute metabolic contraindications and cautions related to feeding difficulties, gastrointestinal dysfunction, and digestion remain the same for both children and adults. However, they added that a range of common adult conditions such as hyperlipidemia, heart disease, diabetes, low bone density, and pregnancy “bring additional consideration, caution, and monitoring to ketogenic diet therapy use.”
 

Beyond epilepsy

The guidelines also call for pre–ketogenic diet therapy biochemical studies to screen adults for preexisting abnormalities and establish a reference for comparing follow-up results after 3, 6, and 12 months, and then annually or as needed.

They also noted that metabolic studies such as urine organic acid and serum amino acid levels are generally not needed in adults unless there is a strong clinical suspicion for an underlying metabolic disorder.

Updated genetic evaluation may also be considered in adults with intellectual disability and epilepsy of unknown etiology. Serial bone mineral density scans may be obtained every 5 years.

The guidelines also call for ketone monitoring (blood beta-hydroxybutyrate or urine amino acids) during the early months of ketogenic diet therapy as an objective indication of compliance and biochemical response.

Dietary adjustments should focus on optimizing the treatment response, minimizing side effects, and maximizing sustainability.

Adults on a ketogenic diet therapy should also be advised to take multivitamin and mineral supplements and drink plenty of fluids.

The panel said emerging evidence also supports the use of ketogenic diet therapies in other adult neurologic disorders such as migraine, Parkinson’s disease, dementia, and multiple sclerosis.

However, the panel said further evidence is needed to guide recommendations on use of ketogenic diet therapies in other neurologic conditions.

The research had no targeted funding. Dr. Cervenka has reported receiving grants from Nutricia, Vitaflo, BrightFocus Foundation, and Army Research Laboratory; honoraria from the American Epilepsy Society, the Neurology Center, Epigenix, LivaNova, and Nutricia; royalties from Demos; and consulting for Nutricia, Glut1 Deficiency Foundation, and Sage Therapeutics. Disclosures for the other authors are listed in the article.

A version of this article originally appeared on Medscape.com.

An international panel of experts has published the first set of recommendations based on current clinical practices and scientific evidence for using ketogenic diet therapies in adults with drug-resistant epilepsy.

Just as in children with epilepsy, ketogenic diet therapies can be safe and effective in adults with epilepsy but should only be undertaken with the support of medical professionals trained in their use, the group said.

Novel in adult neurology

Ketogenic diet therapies are high-fat, low-carbohydrate, and adequate-protein diets that induce fat metabolism and ketone production. Despite its use as an effective antiseizure therapy since the 1920s, ketogenic diet therapies remain novel in adult neurology.

Furthermore, while there are established guidelines for ketogenic diet therapies to reduce seizures in children, there were no formal recommendations for adults, until now.

Drawing on the experience of experts at 20 centers using ketogenic diet therapies in more than 2,100 adults with epilepsy in 10 countries, Dr. Cervenka and an international team developed recommendations on use of ketogenic diet therapies in adults.

The panel noted, “with a relatively mild side effect profile and the potential to reduce seizures in nearly 60% of adults with drug-resistant epilepsy, ketogenic diet therapies should be part of the repertoire of available options.”

Ketogenic diet therapies are appropriate to offer to adults with seizure types and epilepsy syndromes for which these treatments are known to be effective in children, they said. These include tuberous sclerosis complex, Rett syndrome, Lennox-Gastaut syndrome, glucose transporter type 1 deficiency syndrome, genetic generalized epilepsies, and focal epilepsies caused by underlying migrational disorders and resistant to antiseizure medication.

However, adults with drug-resistant focal epilepsy should be offered surgical evaluation first, given the higher anticipated rate of seizure freedom via this route, the panel said.
 

A focus on compliance

Experts at nearly all of the centers report using two or more ketogenic diet therapies. Ninety percent use the modified Atkins diet, 84% use the classic ketogenic diet, and 63% use the modified ketogenic diet and/or low glycemic index treatment. More than half of the centers (58%) use medium-chain triglyceride oil in combination with another ketogenic diet therapy to boost ketone body production.

The most important factors influencing the choice of ketogenic diet therapy are ease of diet application for the patient (100%) and patient and/or caregiver preference, home setting, and mode of feeding (90% each).

The panel recommended that ketogenic diet therapies be tailored to fit the needs of the individual, taking into account his or her physical and mental characteristics, underlying medical conditions, food preferences, type and amount of support from family and others, level of self-sufficiency, feeding habits, and ease of following the diet.

“Most of the differences between the child and adult recommendations have to do with compliance. Often, it’s more of a challenge for adults than for children,” said Dr. Cervenka.

The panel recommended providing adult patients with recipe ideas, individualized training on the ketogenic diet lifestyle from a dietitian or nutritionist, and guidance for meal planning and preparation before starting the diet. This will provide the greatest likelihood of success, as patients often report difficulties coping with carbohydrate restriction.

“In pediatric practice, positive responders typically remain on a ketogenic diet therapy for 2 years before considering weaning. Ketogenic diet therapy in adults is not time-limited. However, a minimum of 3 months of ketogenic diet therapy is recommended before any judgment of response is made,” the panel advised.

The panel pointed out the absolute metabolic contraindications and cautions related to feeding difficulties, gastrointestinal dysfunction, and digestion remain the same for both children and adults. However, they added that a range of common adult conditions such as hyperlipidemia, heart disease, diabetes, low bone density, and pregnancy “bring additional consideration, caution, and monitoring to ketogenic diet therapy use.”
 

Beyond epilepsy

The guidelines also call for pre–ketogenic diet therapy biochemical studies to screen adults for preexisting abnormalities and establish a reference for comparing follow-up results after 3, 6, and 12 months, and then annually or as needed.

They also noted that metabolic studies such as urine organic acid and serum amino acid levels are generally not needed in adults unless there is a strong clinical suspicion for an underlying metabolic disorder.

Updated genetic evaluation may also be considered in adults with intellectual disability and epilepsy of unknown etiology. Serial bone mineral density scans may be obtained every 5 years.

The guidelines also call for ketone monitoring (blood beta-hydroxybutyrate or urine amino acids) during the early months of ketogenic diet therapy as an objective indication of compliance and biochemical response.

Dietary adjustments should focus on optimizing the treatment response, minimizing side effects, and maximizing sustainability.

Adults on a ketogenic diet therapy should also be advised to take multivitamin and mineral supplements and drink plenty of fluids.

The panel said emerging evidence also supports the use of ketogenic diet therapies in other adult neurologic disorders such as migraine, Parkinson’s disease, dementia, and multiple sclerosis.

However, the panel said further evidence is needed to guide recommendations on use of ketogenic diet therapies in other neurologic conditions.

The research had no targeted funding. Dr. Cervenka has reported receiving grants from Nutricia, Vitaflo, BrightFocus Foundation, and Army Research Laboratory; honoraria from the American Epilepsy Society, the Neurology Center, Epigenix, LivaNova, and Nutricia; royalties from Demos; and consulting for Nutricia, Glut1 Deficiency Foundation, and Sage Therapeutics. Disclosures for the other authors are listed in the article.

A version of this article originally appeared on Medscape.com.

An international panel of experts has published the first set of recommendations based on current clinical practices and scientific evidence for using ketogenic diet therapies in adults with drug-resistant epilepsy.

Just as in children with epilepsy, ketogenic diet therapies can be safe and effective in adults with epilepsy but should only be undertaken with the support of medical professionals trained in their use, the group said.

Novel in adult neurology

Ketogenic diet therapies are high-fat, low-carbohydrate, and adequate-protein diets that induce fat metabolism and ketone production. Despite its use as an effective antiseizure therapy since the 1920s, ketogenic diet therapies remain novel in adult neurology.

Furthermore, while there are established guidelines for ketogenic diet therapies to reduce seizures in children, there were no formal recommendations for adults, until now.

Drawing on the experience of experts at 20 centers using ketogenic diet therapies in more than 2,100 adults with epilepsy in 10 countries, Dr. Cervenka and an international team developed recommendations on use of ketogenic diet therapies in adults.

The panel noted, “with a relatively mild side effect profile and the potential to reduce seizures in nearly 60% of adults with drug-resistant epilepsy, ketogenic diet therapies should be part of the repertoire of available options.”

Ketogenic diet therapies are appropriate to offer to adults with seizure types and epilepsy syndromes for which these treatments are known to be effective in children, they said. These include tuberous sclerosis complex, Rett syndrome, Lennox-Gastaut syndrome, glucose transporter type 1 deficiency syndrome, genetic generalized epilepsies, and focal epilepsies caused by underlying migrational disorders and resistant to antiseizure medication.

However, adults with drug-resistant focal epilepsy should be offered surgical evaluation first, given the higher anticipated rate of seizure freedom via this route, the panel said.
 

A focus on compliance

Experts at nearly all of the centers report using two or more ketogenic diet therapies. Ninety percent use the modified Atkins diet, 84% use the classic ketogenic diet, and 63% use the modified ketogenic diet and/or low glycemic index treatment. More than half of the centers (58%) use medium-chain triglyceride oil in combination with another ketogenic diet therapy to boost ketone body production.

The most important factors influencing the choice of ketogenic diet therapy are ease of diet application for the patient (100%) and patient and/or caregiver preference, home setting, and mode of feeding (90% each).

The panel recommended that ketogenic diet therapies be tailored to fit the needs of the individual, taking into account his or her physical and mental characteristics, underlying medical conditions, food preferences, type and amount of support from family and others, level of self-sufficiency, feeding habits, and ease of following the diet.

“Most of the differences between the child and adult recommendations have to do with compliance. Often, it’s more of a challenge for adults than for children,” said Dr. Cervenka.

The panel recommended providing adult patients with recipe ideas, individualized training on the ketogenic diet lifestyle from a dietitian or nutritionist, and guidance for meal planning and preparation before starting the diet. This will provide the greatest likelihood of success, as patients often report difficulties coping with carbohydrate restriction.

“In pediatric practice, positive responders typically remain on a ketogenic diet therapy for 2 years before considering weaning. Ketogenic diet therapy in adults is not time-limited. However, a minimum of 3 months of ketogenic diet therapy is recommended before any judgment of response is made,” the panel advised.

The panel pointed out the absolute metabolic contraindications and cautions related to feeding difficulties, gastrointestinal dysfunction, and digestion remain the same for both children and adults. However, they added that a range of common adult conditions such as hyperlipidemia, heart disease, diabetes, low bone density, and pregnancy “bring additional consideration, caution, and monitoring to ketogenic diet therapy use.”
 

Beyond epilepsy

The guidelines also call for pre–ketogenic diet therapy biochemical studies to screen adults for preexisting abnormalities and establish a reference for comparing follow-up results after 3, 6, and 12 months, and then annually or as needed.

They also noted that metabolic studies such as urine organic acid and serum amino acid levels are generally not needed in adults unless there is a strong clinical suspicion for an underlying metabolic disorder.

Updated genetic evaluation may also be considered in adults with intellectual disability and epilepsy of unknown etiology. Serial bone mineral density scans may be obtained every 5 years.

The guidelines also call for ketone monitoring (blood beta-hydroxybutyrate or urine amino acids) during the early months of ketogenic diet therapy as an objective indication of compliance and biochemical response.

Dietary adjustments should focus on optimizing the treatment response, minimizing side effects, and maximizing sustainability.

Adults on a ketogenic diet therapy should also be advised to take multivitamin and mineral supplements and drink plenty of fluids.

The panel said emerging evidence also supports the use of ketogenic diet therapies in other adult neurologic disorders such as migraine, Parkinson’s disease, dementia, and multiple sclerosis.

However, the panel said further evidence is needed to guide recommendations on use of ketogenic diet therapies in other neurologic conditions.

The research had no targeted funding. Dr. Cervenka has reported receiving grants from Nutricia, Vitaflo, BrightFocus Foundation, and Army Research Laboratory; honoraria from the American Epilepsy Society, the Neurology Center, Epigenix, LivaNova, and Nutricia; royalties from Demos; and consulting for Nutricia, Glut1 Deficiency Foundation, and Sage Therapeutics. Disclosures for the other authors are listed in the article.

A version of this article originally appeared on Medscape.com.

Migraine aura sometimes accompanies or precedes migraine pain, but the phenomenon is difficult to treat and poorly understood. However, some evidence points to potential neurological mechanisms, and migraine aura is associated with cardiovascular disease risk.

“We now have an accumulating body of evidence that supports cortical spreading depression (CSD) as the underlying pathophysiological event of migraine aura,” Andrea Harriott, MD, PhD, said at the Stowe Headache Symposium sponsored by the Headache Cooperative of New England, which was conducted virtually. Dr. Harriott is assistant professor of neurology at Massachusetts General Hospital in Boston.

Somewhere between 20% and 40% of patients with migraine experience aura. It is most often visual, though it can also include sensory, aphasic, and motor symptoms. Visual aura usually begins as a flickering zigzag pattern in the central visual field that moves slowly toward the periphery and often leaves a scotoma. Typical duration is 15-30 minutes. Aura symptoms are more common in females.

Research in the 1940s conducted by the Brazilian researcher Aristides de Azevedo Pacheco Leão, PhD, then at Harvard Medical School, Boston, showed evidence of CSD in rabbits after electrical or mechanical stimulation. He observed a wave of vasodilation and increased blood flow over the cortex that spread over nearly the entire dorsolateral cortex within 3-6 minutes.

In the 1940s and 1950s, researchers sketched on paper the visual disturbance over 10 minutes, tracking the expanding spectrum across the visual field, from the center toward the periphery. The resulting scotoma advanced across the visual cortex at a rate very similar to that of the cortical spreading observed by Dr. Leão, “potentially linking this electrical event that was described with the aura event of migraine,” said Dr. Harriott. Those researchers hypothesized that the aura was produced by a strong excitation phase, followed by a wave of total inhibition.

More recent functional magnetic resonance imaging studies have also shown that CSD-like disturbances occur when patients experience migraine aura. In one study, researchers observed an initial increase and then a decrease in the blood oxygenation level dependent (BOLD) signal, which spread slowly across the visual cortex and correlated with the aura event. “This study was really important in confirming that a CSD-like phenomenon was likely the underlying perturbation that produced the visual aura of migraine,” said Dr. Harriott.

Despite the evidence that CSD causes migraine aura, its connection to migraine pain hasn’t been firmly established. But Dr. Harriott presented some evidence linking the two. Migraine aura is usually followed by pain, and aura precedes migraine attacks 78%-93% of the time. Cephalic allodynia occurs in migraine about 70% to 80% of the time, and migraine with aura is more often associated with severe cutaneous allodynia than is migraine without aura. Finally, migraine patients with comorbidities have more severe disability, and more frequent cutaneous allodynia and aura than does the general migraine population (40% vs. 29%).

All of that suggests that activation of trigeminal nociceptors is involved with migraine aura, according to Dr. Harriott. Preclinical studies have also suggested links between CSD and activation of trigeminal nociceptors, with both immunohistochemical and electrophysiological lines of evidence. “These data suggest that spreading depression actually activates trigeminal nociceptors that we know are involved in signal pain in the head and neck, and that we know are involved in cephalic allodynia as well,” Dr. Harriott said.

The evidence impressed Allan Purdy, MD, professor of medicine at Dalhousie University, Halifax, N.S., who was the discussant for the presentation. “It’s an excellent case that CSD is a remarkably good correlate for aura,” he said during the session.

Along with potential impacts on migraine pain, aura is also associated with cardiovascular risk. “This is really important to know about in our clinical population,” said Dr. Harriott.

Meta-analyses of case control and cohort studies have shown associations between migraine aura and vascular disorders such as ischemic stroke. One meta-analysis showed about a twofold increased risk associated with migraine compared with the nonmigraine population. This difference was driven by migraine with aura (relative risk [RR], 2.25; 95% confidence interval [CI], 1.53-3.33) rather than migraine without aura (RR, 1.24; 95% CI, 0.86-1.79). Migraine generally is associated with greater risk of myocardial infarction (adjusted hazard ratio, 1.33; 95% CI, 1.08-1.64), and that association may be stronger in the aura phenotype.

There doesn’t appear to be evidence that traditional risk factors for heart disease – such as hypertension, diabetes, or high cholesterol – play a role in the association between aura and heart disease. One possibility is that variables like platelet activation, hypercoagulable state, or genetic susceptibility could be responsible.

The risks associated with migraine aura should be noted, but with a caveat, according to Dr. Purdy. “Even though the relative risk is high, the absolute risk is still relatively low, and patients with migraine with aura, who smoke or are female and over 45, those are the cases where the worry comes in.”

Dr. Harriott and Dr. Purdy have nothing to disclose.

Migraine aura sometimes accompanies or precedes migraine pain, but the phenomenon is difficult to treat and poorly understood. However, some evidence points to potential neurological mechanisms, and migraine aura is associated with cardiovascular disease risk.

“We now have an accumulating body of evidence that supports cortical spreading depression (CSD) as the underlying pathophysiological event of migraine aura,” Andrea Harriott, MD, PhD, said at the Stowe Headache Symposium sponsored by the Headache Cooperative of New England, which was conducted virtually. Dr. Harriott is assistant professor of neurology at Massachusetts General Hospital in Boston.

Somewhere between 20% and 40% of patients with migraine experience aura. It is most often visual, though it can also include sensory, aphasic, and motor symptoms. Visual aura usually begins as a flickering zigzag pattern in the central visual field that moves slowly toward the periphery and often leaves a scotoma. Typical duration is 15-30 minutes. Aura symptoms are more common in females.

Research in the 1940s conducted by the Brazilian researcher Aristides de Azevedo Pacheco Leão, PhD, then at Harvard Medical School, Boston, showed evidence of CSD in rabbits after electrical or mechanical stimulation. He observed a wave of vasodilation and increased blood flow over the cortex that spread over nearly the entire dorsolateral cortex within 3-6 minutes.

In the 1940s and 1950s, researchers sketched on paper the visual disturbance over 10 minutes, tracking the expanding spectrum across the visual field, from the center toward the periphery. The resulting scotoma advanced across the visual cortex at a rate very similar to that of the cortical spreading observed by Dr. Leão, “potentially linking this electrical event that was described with the aura event of migraine,” said Dr. Harriott. Those researchers hypothesized that the aura was produced by a strong excitation phase, followed by a wave of total inhibition.

More recent functional magnetic resonance imaging studies have also shown that CSD-like disturbances occur when patients experience migraine aura. In one study, researchers observed an initial increase and then a decrease in the blood oxygenation level dependent (BOLD) signal, which spread slowly across the visual cortex and correlated with the aura event. “This study was really important in confirming that a CSD-like phenomenon was likely the underlying perturbation that produced the visual aura of migraine,” said Dr. Harriott.

Despite the evidence that CSD causes migraine aura, its connection to migraine pain hasn’t been firmly established. But Dr. Harriott presented some evidence linking the two. Migraine aura is usually followed by pain, and aura precedes migraine attacks 78%-93% of the time. Cephalic allodynia occurs in migraine about 70% to 80% of the time, and migraine with aura is more often associated with severe cutaneous allodynia than is migraine without aura. Finally, migraine patients with comorbidities have more severe disability, and more frequent cutaneous allodynia and aura than does the general migraine population (40% vs. 29%).

All of that suggests that activation of trigeminal nociceptors is involved with migraine aura, according to Dr. Harriott. Preclinical studies have also suggested links between CSD and activation of trigeminal nociceptors, with both immunohistochemical and electrophysiological lines of evidence. “These data suggest that spreading depression actually activates trigeminal nociceptors that we know are involved in signal pain in the head and neck, and that we know are involved in cephalic allodynia as well,” Dr. Harriott said.

The evidence impressed Allan Purdy, MD, professor of medicine at Dalhousie University, Halifax, N.S., who was the discussant for the presentation. “It’s an excellent case that CSD is a remarkably good correlate for aura,” he said during the session.

Along with potential impacts on migraine pain, aura is also associated with cardiovascular risk. “This is really important to know about in our clinical population,” said Dr. Harriott.

Meta-analyses of case control and cohort studies have shown associations between migraine aura and vascular disorders such as ischemic stroke. One meta-analysis showed about a twofold increased risk associated with migraine compared with the nonmigraine population. This difference was driven by migraine with aura (relative risk [RR], 2.25; 95% confidence interval [CI], 1.53-3.33) rather than migraine without aura (RR, 1.24; 95% CI, 0.86-1.79). Migraine generally is associated with greater risk of myocardial infarction (adjusted hazard ratio, 1.33; 95% CI, 1.08-1.64), and that association may be stronger in the aura phenotype.

There doesn’t appear to be evidence that traditional risk factors for heart disease – such as hypertension, diabetes, or high cholesterol – play a role in the association between aura and heart disease. One possibility is that variables like platelet activation, hypercoagulable state, or genetic susceptibility could be responsible.

The risks associated with migraine aura should be noted, but with a caveat, according to Dr. Purdy. “Even though the relative risk is high, the absolute risk is still relatively low, and patients with migraine with aura, who smoke or are female and over 45, those are the cases where the worry comes in.”

Dr. Harriott and Dr. Purdy have nothing to disclose.

Migraine aura sometimes accompanies or precedes migraine pain, but the phenomenon is difficult to treat and poorly understood. However, some evidence points to potential neurological mechanisms, and migraine aura is associated with cardiovascular disease risk.

“We now have an accumulating body of evidence that supports cortical spreading depression (CSD) as the underlying pathophysiological event of migraine aura,” Andrea Harriott, MD, PhD, said at the Stowe Headache Symposium sponsored by the Headache Cooperative of New England, which was conducted virtually. Dr. Harriott is assistant professor of neurology at Massachusetts General Hospital in Boston.

Somewhere between 20% and 40% of patients with migraine experience aura. It is most often visual, though it can also include sensory, aphasic, and motor symptoms. Visual aura usually begins as a flickering zigzag pattern in the central visual field that moves slowly toward the periphery and often leaves a scotoma. Typical duration is 15-30 minutes. Aura symptoms are more common in females.

Research in the 1940s conducted by the Brazilian researcher Aristides de Azevedo Pacheco Leão, PhD, then at Harvard Medical School, Boston, showed evidence of CSD in rabbits after electrical or mechanical stimulation. He observed a wave of vasodilation and increased blood flow over the cortex that spread over nearly the entire dorsolateral cortex within 3-6 minutes.

In the 1940s and 1950s, researchers sketched on paper the visual disturbance over 10 minutes, tracking the expanding spectrum across the visual field, from the center toward the periphery. The resulting scotoma advanced across the visual cortex at a rate very similar to that of the cortical spreading observed by Dr. Leão, “potentially linking this electrical event that was described with the aura event of migraine,” said Dr. Harriott. Those researchers hypothesized that the aura was produced by a strong excitation phase, followed by a wave of total inhibition.

More recent functional magnetic resonance imaging studies have also shown that CSD-like disturbances occur when patients experience migraine aura. In one study, researchers observed an initial increase and then a decrease in the blood oxygenation level dependent (BOLD) signal, which spread slowly across the visual cortex and correlated with the aura event. “This study was really important in confirming that a CSD-like phenomenon was likely the underlying perturbation that produced the visual aura of migraine,” said Dr. Harriott.

Despite the evidence that CSD causes migraine aura, its connection to migraine pain hasn’t been firmly established. But Dr. Harriott presented some evidence linking the two. Migraine aura is usually followed by pain, and aura precedes migraine attacks 78%-93% of the time. Cephalic allodynia occurs in migraine about 70% to 80% of the time, and migraine with aura is more often associated with severe cutaneous allodynia than is migraine without aura. Finally, migraine patients with comorbidities have more severe disability, and more frequent cutaneous allodynia and aura than does the general migraine population (40% vs. 29%).

All of that suggests that activation of trigeminal nociceptors is involved with migraine aura, according to Dr. Harriott. Preclinical studies have also suggested links between CSD and activation of trigeminal nociceptors, with both immunohistochemical and electrophysiological lines of evidence. “These data suggest that spreading depression actually activates trigeminal nociceptors that we know are involved in signal pain in the head and neck, and that we know are involved in cephalic allodynia as well,” Dr. Harriott said.

The evidence impressed Allan Purdy, MD, professor of medicine at Dalhousie University, Halifax, N.S., who was the discussant for the presentation. “It’s an excellent case that CSD is a remarkably good correlate for aura,” he said during the session.

Along with potential impacts on migraine pain, aura is also associated with cardiovascular risk. “This is really important to know about in our clinical population,” said Dr. Harriott.

Meta-analyses of case control and cohort studies have shown associations between migraine aura and vascular disorders such as ischemic stroke. One meta-analysis showed about a twofold increased risk associated with migraine compared with the nonmigraine population. This difference was driven by migraine with aura (relative risk [RR], 2.25; 95% confidence interval [CI], 1.53-3.33) rather than migraine without aura (RR, 1.24; 95% CI, 0.86-1.79). Migraine generally is associated with greater risk of myocardial infarction (adjusted hazard ratio, 1.33; 95% CI, 1.08-1.64), and that association may be stronger in the aura phenotype.

There doesn’t appear to be evidence that traditional risk factors for heart disease – such as hypertension, diabetes, or high cholesterol – play a role in the association between aura and heart disease. One possibility is that variables like platelet activation, hypercoagulable state, or genetic susceptibility could be responsible.

The risks associated with migraine aura should be noted, but with a caveat, according to Dr. Purdy. “Even though the relative risk is high, the absolute risk is still relatively low, and patients with migraine with aura, who smoke or are female and over 45, those are the cases where the worry comes in.”

Dr. Harriott and Dr. Purdy have nothing to disclose.

Patients with a primary humoral immunodeficiency (PID) are 91% more likely to have a psychiatric disorder and 84% more likely to exhibit suicidal behavior, compared against those without the condition, new research shows.

Results showed that this association, which was stronger in women, could not be fully explained by comorbid autoimmune diseases or by familial confounding.

These findings have important clinical implications, study investigator Josef Isung, MD, PhD, Centre for Psychiatry Research, Karolinska Institute, Stockholm, Sweden, told Medscape Medical News.

Clinicians managing patients with PID “should be aware of this increased association with psychiatric disorders and perhaps screen for them,” said Isung.

The study was published in the November issue of JAMA Psychiatry.
 

Registry study

Mounting evidence suggests immune disruption plays a role in psychiatric disorders through a range of mechanisms, including altered neurodevelopment. However, little is known about the neuropsychiatric consequences resulting from the underproduction of homeostatic antibodies.

PIDs involve a deficiency in antibody production, mainly affecting immunoglobulin, “or the humoral aspect of the immune system,” said Isung. They’re associated with an increased risk for recurrent infections and of developing autoimmune diseases.

The immunodeficiency can be severe, even life threatening, but can also be relatively mild. One of the less severe PID types is selective IgA deficiency, which is linked to increased infections within the mucosa-associated lymphoid tissue (MALT), an important immune barrier.

Experts have long suspected that infections within the MALT are associated with certain forms of psychopathology in children, particularly obsessive-compulsive disorder and chronic tic disorders.

While patients with this selective IgA subtype may be at some increased risk for infection and autoimmune disease, their overall health otherwise is good, said Isung.

The prevalence of PIDs ranges from about 1:250 to 1:20,000, depending on the type of humoral immunodeficiency, although most would fall into the relatively rare category, he added.

Using several linked national Swedish registries, researchers identified individuals with any PID diagnosis affecting immunoglobulin levels, their full siblings, and those with a lifetime diagnosis of selective IgA deficiency. In addition, they collected data on autoimmune diseases.

The study outcome was a lifetime record of a psychiatric disorder, a suicide attempt, or death by suicide.
 

Strong link to autism

Researchers identified 8378 patients (59% women) with PID affecting immunoglobulin levels (median age at first diagnosis, 47.8 years). They compared this group with almost 14.3 million subjects without PID.

In those with PID, 27.6% had an autoimmune disease vs 6.8% of those without PID, a statistically significant difference (P < .001).

About 20.5% of those with PID and 10.7% of unexposed subjects had at least one diagnosis of a psychiatric disorder.

In a model adjusted for year of birth, sex, and history of autoimmune disease, subjects with PID had a 91% higher likelihood of any psychiatric disorder (adjusted odds ratio [AOR] 1.91; 95% CI, 1.81 - 2.01; P < .001) vs their counterparts without PID.

The AORs for individual psychiatric disorders ranged from 1.34 (95% CI, 1.17 - 1.54; P < .001) for schizophrenia and other psychotic disorders to 2.99 (95% CI, 2.42 - 3.70; P < .001) for autism spectrum disorders (ASDs)

It’s unclear why the association with PID was strongest for autism, “but being a neurodevelopmental disorder, maybe autism is logically more associated with this type of disruption,” said Isung.

Research suggests that immunologic disruption may play a role in ASD, either through altered maternal immune function in utero or through immune disruption after birth, the researchers note.

Compared to those without PID, individuals with it had a significantly increased likelihood of any suicidal behavior (AOR, 1.84; 95% CI, 1.66 - 2.04, P < .001) as well as individual outcomes of death by suicide and suicide attempts.

The association with psychiatric disorders and suicidal behavior was markedly stronger for exposure to both PID and autoimmune disease than for exposure to either of these alone, which suggest an additive effect for these immune-related conditions.
 

Sex differences

“It was unclear to us why women seemed particularly vulnerable,” said Isung. He noted that PIDs are generally about as common in women as in men, but women tend to have higher rates of psychiatric disorders.

The analysis of the sibling cohort also revealed an elevated risk for psychiatric disorders, including ASD and suicidal behavior, but to a lesser degree.

“From this we could infer that at least part of the associations would be genetic, but part would be related to the disruption in itself,” said Isung.

An analysis examining selective IgA subtype also revealed a link with psychiatric disorders and suicidal behavior, suggesting this link is not exclusive to severe PID cases.

“Our conclusion here was that it seems like PID itself, or the immune disruption in itself, could explain the association rather than the burden of illness,” said Isung.

However, he acknowledged that the long-term stress and mental health fallout of having a chronic illness like PID may also explain some of the increased risk for psychiatric disorders.

This study, he said, provides more evidence that immune disruptions affect neurodevelopment and the brain. However, he added, the underlying mechanism still isn’t fully understood.

The results highlight the need to raise awareness of the association between immunodeficiency and mental illness, including suicidality among clinicians, patients, and advocates.

These findings may also have implications in patients with other immune deficiencies, said Isung, noting, “it would be interesting to further explore associations with other immunocompromised populations.”
 

No surprises

Commenting on the findings for Medscape Medical News, Igor Galynker, MD, professor of psychiatry at Icahn School of Medicine at Mount Sinai, New York City, said the study was “very well-done” and used “reliable and well-controlled” databases.

However, he added, the results “are neither particularly dramatic nor conclusive” as it makes sense that medical illnesses like PID would “increase risk of psychopathology,” said Galynker.

PID patients are much more likely to have contact with clinicians and to receive a psychiatric diagnosis, he said.

“People with a chronic illness are more stressed and generally have high incidences of depression, anxiety, and suicidal behavior. In addition to that, they may be more likely to be diagnosed with those conditions because they see a clinician more frequently.”

However, that reasoning doesn’t apply to autism, which manifests in early childhood and so is unlikely to be the result of stress, said Galynker, which is why he believes the finding that ASD is the psychiatric outcome most strongly associated with PID is “the most convincing.”

Galynker wasn’t surprised that the association between PID and psychiatric illnesses, and suicidal behaviors, was stronger among women.

“Women attempt suicide four times more often than men to begin with, so you would expect this to be more pronounced” in those with PID.

The study was supported by grants from the Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institute; Stockholm Care Services; the Soderstrom Konig Foundation; and the Fredrik & Ingrid Thurings Foundation. Isung and Galynker have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Patients with a primary humoral immunodeficiency (PID) are 91% more likely to have a psychiatric disorder and 84% more likely to exhibit suicidal behavior, compared against those without the condition, new research shows.

Results showed that this association, which was stronger in women, could not be fully explained by comorbid autoimmune diseases or by familial confounding.

These findings have important clinical implications, study investigator Josef Isung, MD, PhD, Centre for Psychiatry Research, Karolinska Institute, Stockholm, Sweden, told Medscape Medical News.

Clinicians managing patients with PID “should be aware of this increased association with psychiatric disorders and perhaps screen for them,” said Isung.

The study was published in the November issue of JAMA Psychiatry.
 

Registry study

Mounting evidence suggests immune disruption plays a role in psychiatric disorders through a range of mechanisms, including altered neurodevelopment. However, little is known about the neuropsychiatric consequences resulting from the underproduction of homeostatic antibodies.

PIDs involve a deficiency in antibody production, mainly affecting immunoglobulin, “or the humoral aspect of the immune system,” said Isung. They’re associated with an increased risk for recurrent infections and of developing autoimmune diseases.

The immunodeficiency can be severe, even life threatening, but can also be relatively mild. One of the less severe PID types is selective IgA deficiency, which is linked to increased infections within the mucosa-associated lymphoid tissue (MALT), an important immune barrier.

Experts have long suspected that infections within the MALT are associated with certain forms of psychopathology in children, particularly obsessive-compulsive disorder and chronic tic disorders.

While patients with this selective IgA subtype may be at some increased risk for infection and autoimmune disease, their overall health otherwise is good, said Isung.

The prevalence of PIDs ranges from about 1:250 to 1:20,000, depending on the type of humoral immunodeficiency, although most would fall into the relatively rare category, he added.

Using several linked national Swedish registries, researchers identified individuals with any PID diagnosis affecting immunoglobulin levels, their full siblings, and those with a lifetime diagnosis of selective IgA deficiency. In addition, they collected data on autoimmune diseases.

The study outcome was a lifetime record of a psychiatric disorder, a suicide attempt, or death by suicide.
 

Strong link to autism

Researchers identified 8378 patients (59% women) with PID affecting immunoglobulin levels (median age at first diagnosis, 47.8 years). They compared this group with almost 14.3 million subjects without PID.

In those with PID, 27.6% had an autoimmune disease vs 6.8% of those without PID, a statistically significant difference (P < .001).

About 20.5% of those with PID and 10.7% of unexposed subjects had at least one diagnosis of a psychiatric disorder.

In a model adjusted for year of birth, sex, and history of autoimmune disease, subjects with PID had a 91% higher likelihood of any psychiatric disorder (adjusted odds ratio [AOR] 1.91; 95% CI, 1.81 - 2.01; P < .001) vs their counterparts without PID.

The AORs for individual psychiatric disorders ranged from 1.34 (95% CI, 1.17 - 1.54; P < .001) for schizophrenia and other psychotic disorders to 2.99 (95% CI, 2.42 - 3.70; P < .001) for autism spectrum disorders (ASDs)

It’s unclear why the association with PID was strongest for autism, “but being a neurodevelopmental disorder, maybe autism is logically more associated with this type of disruption,” said Isung.

Research suggests that immunologic disruption may play a role in ASD, either through altered maternal immune function in utero or through immune disruption after birth, the researchers note.

Compared to those without PID, individuals with it had a significantly increased likelihood of any suicidal behavior (AOR, 1.84; 95% CI, 1.66 - 2.04, P < .001) as well as individual outcomes of death by suicide and suicide attempts.

The association with psychiatric disorders and suicidal behavior was markedly stronger for exposure to both PID and autoimmune disease than for exposure to either of these alone, which suggest an additive effect for these immune-related conditions.
 

Sex differences

“It was unclear to us why women seemed particularly vulnerable,” said Isung. He noted that PIDs are generally about as common in women as in men, but women tend to have higher rates of psychiatric disorders.

The analysis of the sibling cohort also revealed an elevated risk for psychiatric disorders, including ASD and suicidal behavior, but to a lesser degree.

“From this we could infer that at least part of the associations would be genetic, but part would be related to the disruption in itself,” said Isung.

An analysis examining selective IgA subtype also revealed a link with psychiatric disorders and suicidal behavior, suggesting this link is not exclusive to severe PID cases.

“Our conclusion here was that it seems like PID itself, or the immune disruption in itself, could explain the association rather than the burden of illness,” said Isung.

However, he acknowledged that the long-term stress and mental health fallout of having a chronic illness like PID may also explain some of the increased risk for psychiatric disorders.

This study, he said, provides more evidence that immune disruptions affect neurodevelopment and the brain. However, he added, the underlying mechanism still isn’t fully understood.

The results highlight the need to raise awareness of the association between immunodeficiency and mental illness, including suicidality among clinicians, patients, and advocates.

These findings may also have implications in patients with other immune deficiencies, said Isung, noting, “it would be interesting to further explore associations with other immunocompromised populations.”
 

No surprises

Commenting on the findings for Medscape Medical News, Igor Galynker, MD, professor of psychiatry at Icahn School of Medicine at Mount Sinai, New York City, said the study was “very well-done” and used “reliable and well-controlled” databases.

However, he added, the results “are neither particularly dramatic nor conclusive” as it makes sense that medical illnesses like PID would “increase risk of psychopathology,” said Galynker.

PID patients are much more likely to have contact with clinicians and to receive a psychiatric diagnosis, he said.

“People with a chronic illness are more stressed and generally have high incidences of depression, anxiety, and suicidal behavior. In addition to that, they may be more likely to be diagnosed with those conditions because they see a clinician more frequently.”

However, that reasoning doesn’t apply to autism, which manifests in early childhood and so is unlikely to be the result of stress, said Galynker, which is why he believes the finding that ASD is the psychiatric outcome most strongly associated with PID is “the most convincing.”

Galynker wasn’t surprised that the association between PID and psychiatric illnesses, and suicidal behaviors, was stronger among women.

“Women attempt suicide four times more often than men to begin with, so you would expect this to be more pronounced” in those with PID.

The study was supported by grants from the Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institute; Stockholm Care Services; the Soderstrom Konig Foundation; and the Fredrik & Ingrid Thurings Foundation. Isung and Galynker have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Patients with a primary humoral immunodeficiency (PID) are 91% more likely to have a psychiatric disorder and 84% more likely to exhibit suicidal behavior, compared against those without the condition, new research shows.

Results showed that this association, which was stronger in women, could not be fully explained by comorbid autoimmune diseases or by familial confounding.

These findings have important clinical implications, study investigator Josef Isung, MD, PhD, Centre for Psychiatry Research, Karolinska Institute, Stockholm, Sweden, told Medscape Medical News.

Clinicians managing patients with PID “should be aware of this increased association with psychiatric disorders and perhaps screen for them,” said Isung.

The study was published in the November issue of JAMA Psychiatry.
 

Registry study

Mounting evidence suggests immune disruption plays a role in psychiatric disorders through a range of mechanisms, including altered neurodevelopment. However, little is known about the neuropsychiatric consequences resulting from the underproduction of homeostatic antibodies.

PIDs involve a deficiency in antibody production, mainly affecting immunoglobulin, “or the humoral aspect of the immune system,” said Isung. They’re associated with an increased risk for recurrent infections and of developing autoimmune diseases.

The immunodeficiency can be severe, even life threatening, but can also be relatively mild. One of the less severe PID types is selective IgA deficiency, which is linked to increased infections within the mucosa-associated lymphoid tissue (MALT), an important immune barrier.

Experts have long suspected that infections within the MALT are associated with certain forms of psychopathology in children, particularly obsessive-compulsive disorder and chronic tic disorders.

While patients with this selective IgA subtype may be at some increased risk for infection and autoimmune disease, their overall health otherwise is good, said Isung.

The prevalence of PIDs ranges from about 1:250 to 1:20,000, depending on the type of humoral immunodeficiency, although most would fall into the relatively rare category, he added.

Using several linked national Swedish registries, researchers identified individuals with any PID diagnosis affecting immunoglobulin levels, their full siblings, and those with a lifetime diagnosis of selective IgA deficiency. In addition, they collected data on autoimmune diseases.

The study outcome was a lifetime record of a psychiatric disorder, a suicide attempt, or death by suicide.
 

Strong link to autism

Researchers identified 8378 patients (59% women) with PID affecting immunoglobulin levels (median age at first diagnosis, 47.8 years). They compared this group with almost 14.3 million subjects without PID.

In those with PID, 27.6% had an autoimmune disease vs 6.8% of those without PID, a statistically significant difference (P < .001).

About 20.5% of those with PID and 10.7% of unexposed subjects had at least one diagnosis of a psychiatric disorder.

In a model adjusted for year of birth, sex, and history of autoimmune disease, subjects with PID had a 91% higher likelihood of any psychiatric disorder (adjusted odds ratio [AOR] 1.91; 95% CI, 1.81 - 2.01; P < .001) vs their counterparts without PID.

The AORs for individual psychiatric disorders ranged from 1.34 (95% CI, 1.17 - 1.54; P < .001) for schizophrenia and other psychotic disorders to 2.99 (95% CI, 2.42 - 3.70; P < .001) for autism spectrum disorders (ASDs)

It’s unclear why the association with PID was strongest for autism, “but being a neurodevelopmental disorder, maybe autism is logically more associated with this type of disruption,” said Isung.

Research suggests that immunologic disruption may play a role in ASD, either through altered maternal immune function in utero or through immune disruption after birth, the researchers note.

Compared to those without PID, individuals with it had a significantly increased likelihood of any suicidal behavior (AOR, 1.84; 95% CI, 1.66 - 2.04, P < .001) as well as individual outcomes of death by suicide and suicide attempts.

The association with psychiatric disorders and suicidal behavior was markedly stronger for exposure to both PID and autoimmune disease than for exposure to either of these alone, which suggest an additive effect for these immune-related conditions.
 

Sex differences

“It was unclear to us why women seemed particularly vulnerable,” said Isung. He noted that PIDs are generally about as common in women as in men, but women tend to have higher rates of psychiatric disorders.

The analysis of the sibling cohort also revealed an elevated risk for psychiatric disorders, including ASD and suicidal behavior, but to a lesser degree.

“From this we could infer that at least part of the associations would be genetic, but part would be related to the disruption in itself,” said Isung.

An analysis examining selective IgA subtype also revealed a link with psychiatric disorders and suicidal behavior, suggesting this link is not exclusive to severe PID cases.

“Our conclusion here was that it seems like PID itself, or the immune disruption in itself, could explain the association rather than the burden of illness,” said Isung.

However, he acknowledged that the long-term stress and mental health fallout of having a chronic illness like PID may also explain some of the increased risk for psychiatric disorders.

This study, he said, provides more evidence that immune disruptions affect neurodevelopment and the brain. However, he added, the underlying mechanism still isn’t fully understood.

The results highlight the need to raise awareness of the association between immunodeficiency and mental illness, including suicidality among clinicians, patients, and advocates.

These findings may also have implications in patients with other immune deficiencies, said Isung, noting, “it would be interesting to further explore associations with other immunocompromised populations.”
 

No surprises

Commenting on the findings for Medscape Medical News, Igor Galynker, MD, professor of psychiatry at Icahn School of Medicine at Mount Sinai, New York City, said the study was “very well-done” and used “reliable and well-controlled” databases.

However, he added, the results “are neither particularly dramatic nor conclusive” as it makes sense that medical illnesses like PID would “increase risk of psychopathology,” said Galynker.

PID patients are much more likely to have contact with clinicians and to receive a psychiatric diagnosis, he said.

“People with a chronic illness are more stressed and generally have high incidences of depression, anxiety, and suicidal behavior. In addition to that, they may be more likely to be diagnosed with those conditions because they see a clinician more frequently.”

However, that reasoning doesn’t apply to autism, which manifests in early childhood and so is unlikely to be the result of stress, said Galynker, which is why he believes the finding that ASD is the psychiatric outcome most strongly associated with PID is “the most convincing.”

Galynker wasn’t surprised that the association between PID and psychiatric illnesses, and suicidal behaviors, was stronger among women.

“Women attempt suicide four times more often than men to begin with, so you would expect this to be more pronounced” in those with PID.

The study was supported by grants from the Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institute; Stockholm Care Services; the Soderstrom Konig Foundation; and the Fredrik & Ingrid Thurings Foundation. Isung and Galynker have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Lowering blood pressure for patients with intracerebral hemorrhage (ICH) does not improve functional recovery, a systematic review and meta-analysis shows, although it does reduce hematoma growth in these patients.

Despite the negative finding, the investigators observed broad variation in treatment effect among the studies they reviewed. They also found that target-based blood pressure treatment tended to improve function more than fixed-dose treatment.

“These data provide a strong message that early blood pressure–lowering treatment can control bleeding. This was not clear beforehand,” Craig Anderson, PhD, professor of neurology and epidemiology at the University of New South Wales, Sydney, said in an interview.

“But these data also indicate that the management of blood pressure in ICH is complex,” he added. Timing, type of drug, and type of patient must be considered, he said. “We need more data to allow better individualizing of such therapy.”

The results were presented at the European Stroke Organisation–World Stroke Organisation (ESO-WSO) Conference 2020.

Controversy about the efficacy of blood pressure reduction for patients with ICH continues, despite studies that have examined this question. In this analysis, Dr. Anderson and colleagues sought to examine the evidence from randomized controlled trials in this area and identify potentially overlooked heterogeneity among trials.

The investigators conducted a systematic review and meta-analysis of studies in the Cochrane Central Register of Controlled Trials, EMBASE, and MEDLINE databases. They searched for randomized controlled trials of blood pressure management for adults with acute ICH, focusing on studies in which patients were enrolled within 7 days of ICH onset. These studies compared intensive blood pressure management with guideline-based management.

Investigators chose function, defined as Modified Rankin Scale (mRS) score at 90 days, as their primary outcome. Radiologic outcomes included absolute (>6 mL) and proportional (>33%) hematoma growth at 24 hours. They used the intention to treat dataset from each trial in their statistical analyses and created generalized linear mixed models with prespecified covariables using a one-stage approach.
 

Variation by drug

A total of 7,094 studies were identified, of which 50 were eligible for inclusion. Their analysis encompassed 16 studies for which the respective investigators were willing to share patient-level data. The analysis included data on 6,221 patients. The mean age of the patients was 64.2 years, 36.4% were women, and the median time from symptom onset to randomization was 3.8 hours.

Mean National Institutes of Health Stroke Scale score was approximately 11. Mean systolic blood pressure at baseline was 177 mm Hg, and mean hematoma volume was approximately 10.6 mL.

The difference in blood pressure between the intensive and guideline groups was approximately 8 mm Hg at 1 hour and 12 mm Hg at 24 hours.

Intensive blood pressure management did not affect function at 90 days. The adjusted odds ratio for unfavorable shift in mRS scores was 0.97 (95% CI, 0.88-1.06; P = .503). Intensive blood pressure management did, however, reduce hematoma growth (absolute aOR, 0.75; 95% CI, 0.60-0.92; P = .007; relative aOR, 0.82; 95% CI, 0.68-0.99; P = .034).

In prespecified subgroup analyses, they found a trend toward adverse outcomes among patients who received renin-angiotensin blockers and a trend toward benefit for patients who received alpha- or beta-receptor antagonists or calcium channel blockers. They did not observe a clear association between time of treatment and outcome.

In addition to hematoma growth, other factors influence prognosis after ICH, such as the patient’s status before ICH (for example, cardiovascular risk factors, age, and hypertensive effects on the brain, kidneys, and heart), the location of ICH and its effects on surrounding structures, and complications of care in hospitals, such as infection and bleeding, said Dr. Anderson.

They are conducting two ongoing clinical trials in patients with ICH. One, INTERACT3, is evaluating a “care bundle” quality control package that includes early intensive blood pressure lowering for patients with large ICH who undergo surgery.

The other, INTERACT4, is evaluating early blood pressure control in the ambulance for patients with suspected acute stroke. At least one-fifth of those patients will have ICH, said Dr. Anderson.
 

Prevention is essential

Among patients with ICH, much of the bleeding occurs before presentation at the hospital, Louis R. Caplan, MD, a neurologist at Beth Israel Deaconess Medical Center, Boston, said in an interview. Furthermore, the bleeding mainly occurs in the deep part of the brain where most of the important motor tracts are. “If those tracts are already hit, a little extra blood isn’t going to change things,” said Dr. Caplan, who was not involved in the research.

In addition, blood is pushed from inside the brain to the periphery until the pressure outside the brain is equal to the pressure inside it. “You can decrease the amount of bleeding significantly, but it probably doesn’t affect the outcome,” said Dr. Caplan.

One factor in patients’ apparent lack of functional improvement is that the mRS is not sensitive to minor changes in disability, he said. “You have to show a pretty important change for it to make a difference,” said Dr. Caplan.

In addition, recovery from a hemorrhage takes much longer than recovery from an infarct. Examining the population at 6 months would have been preferable to examining them at 90 days, but the investigators might not have 6-month data, said Dr. Caplan.

“The main thing is really prevention,” he concluded.

The study was conducted with funding from Takeda. Dr. Anderson reported receiving funding from the National Health and Medical Research Council of Australia and speaker fees from Takeda. Dr. Caplan has disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Lowering blood pressure for patients with intracerebral hemorrhage (ICH) does not improve functional recovery, a systematic review and meta-analysis shows, although it does reduce hematoma growth in these patients.

Despite the negative finding, the investigators observed broad variation in treatment effect among the studies they reviewed. They also found that target-based blood pressure treatment tended to improve function more than fixed-dose treatment.

“These data provide a strong message that early blood pressure–lowering treatment can control bleeding. This was not clear beforehand,” Craig Anderson, PhD, professor of neurology and epidemiology at the University of New South Wales, Sydney, said in an interview.

“But these data also indicate that the management of blood pressure in ICH is complex,” he added. Timing, type of drug, and type of patient must be considered, he said. “We need more data to allow better individualizing of such therapy.”

The results were presented at the European Stroke Organisation–World Stroke Organisation (ESO-WSO) Conference 2020.

Controversy about the efficacy of blood pressure reduction for patients with ICH continues, despite studies that have examined this question. In this analysis, Dr. Anderson and colleagues sought to examine the evidence from randomized controlled trials in this area and identify potentially overlooked heterogeneity among trials.

The investigators conducted a systematic review and meta-analysis of studies in the Cochrane Central Register of Controlled Trials, EMBASE, and MEDLINE databases. They searched for randomized controlled trials of blood pressure management for adults with acute ICH, focusing on studies in which patients were enrolled within 7 days of ICH onset. These studies compared intensive blood pressure management with guideline-based management.

Investigators chose function, defined as Modified Rankin Scale (mRS) score at 90 days, as their primary outcome. Radiologic outcomes included absolute (>6 mL) and proportional (>33%) hematoma growth at 24 hours. They used the intention to treat dataset from each trial in their statistical analyses and created generalized linear mixed models with prespecified covariables using a one-stage approach.
 

Variation by drug

A total of 7,094 studies were identified, of which 50 were eligible for inclusion. Their analysis encompassed 16 studies for which the respective investigators were willing to share patient-level data. The analysis included data on 6,221 patients. The mean age of the patients was 64.2 years, 36.4% were women, and the median time from symptom onset to randomization was 3.8 hours.

Mean National Institutes of Health Stroke Scale score was approximately 11. Mean systolic blood pressure at baseline was 177 mm Hg, and mean hematoma volume was approximately 10.6 mL.

The difference in blood pressure between the intensive and guideline groups was approximately 8 mm Hg at 1 hour and 12 mm Hg at 24 hours.

Intensive blood pressure management did not affect function at 90 days. The adjusted odds ratio for unfavorable shift in mRS scores was 0.97 (95% CI, 0.88-1.06; P = .503). Intensive blood pressure management did, however, reduce hematoma growth (absolute aOR, 0.75; 95% CI, 0.60-0.92; P = .007; relative aOR, 0.82; 95% CI, 0.68-0.99; P = .034).

In prespecified subgroup analyses, they found a trend toward adverse outcomes among patients who received renin-angiotensin blockers and a trend toward benefit for patients who received alpha- or beta-receptor antagonists or calcium channel blockers. They did not observe a clear association between time of treatment and outcome.

In addition to hematoma growth, other factors influence prognosis after ICH, such as the patient’s status before ICH (for example, cardiovascular risk factors, age, and hypertensive effects on the brain, kidneys, and heart), the location of ICH and its effects on surrounding structures, and complications of care in hospitals, such as infection and bleeding, said Dr. Anderson.

They are conducting two ongoing clinical trials in patients with ICH. One, INTERACT3, is evaluating a “care bundle” quality control package that includes early intensive blood pressure lowering for patients with large ICH who undergo surgery.

The other, INTERACT4, is evaluating early blood pressure control in the ambulance for patients with suspected acute stroke. At least one-fifth of those patients will have ICH, said Dr. Anderson.
 

Prevention is essential

Among patients with ICH, much of the bleeding occurs before presentation at the hospital, Louis R. Caplan, MD, a neurologist at Beth Israel Deaconess Medical Center, Boston, said in an interview. Furthermore, the bleeding mainly occurs in the deep part of the brain where most of the important motor tracts are. “If those tracts are already hit, a little extra blood isn’t going to change things,” said Dr. Caplan, who was not involved in the research.

In addition, blood is pushed from inside the brain to the periphery until the pressure outside the brain is equal to the pressure inside it. “You can decrease the amount of bleeding significantly, but it probably doesn’t affect the outcome,” said Dr. Caplan.

One factor in patients’ apparent lack of functional improvement is that the mRS is not sensitive to minor changes in disability, he said. “You have to show a pretty important change for it to make a difference,” said Dr. Caplan.

In addition, recovery from a hemorrhage takes much longer than recovery from an infarct. Examining the population at 6 months would have been preferable to examining them at 90 days, but the investigators might not have 6-month data, said Dr. Caplan.

“The main thing is really prevention,” he concluded.

The study was conducted with funding from Takeda. Dr. Anderson reported receiving funding from the National Health and Medical Research Council of Australia and speaker fees from Takeda. Dr. Caplan has disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Lowering blood pressure for patients with intracerebral hemorrhage (ICH) does not improve functional recovery, a systematic review and meta-analysis shows, although it does reduce hematoma growth in these patients.

Despite the negative finding, the investigators observed broad variation in treatment effect among the studies they reviewed. They also found that target-based blood pressure treatment tended to improve function more than fixed-dose treatment.

“These data provide a strong message that early blood pressure–lowering treatment can control bleeding. This was not clear beforehand,” Craig Anderson, PhD, professor of neurology and epidemiology at the University of New South Wales, Sydney, said in an interview.

“But these data also indicate that the management of blood pressure in ICH is complex,” he added. Timing, type of drug, and type of patient must be considered, he said. “We need more data to allow better individualizing of such therapy.”

The results were presented at the European Stroke Organisation–World Stroke Organisation (ESO-WSO) Conference 2020.

Controversy about the efficacy of blood pressure reduction for patients with ICH continues, despite studies that have examined this question. In this analysis, Dr. Anderson and colleagues sought to examine the evidence from randomized controlled trials in this area and identify potentially overlooked heterogeneity among trials.

The investigators conducted a systematic review and meta-analysis of studies in the Cochrane Central Register of Controlled Trials, EMBASE, and MEDLINE databases. They searched for randomized controlled trials of blood pressure management for adults with acute ICH, focusing on studies in which patients were enrolled within 7 days of ICH onset. These studies compared intensive blood pressure management with guideline-based management.

Investigators chose function, defined as Modified Rankin Scale (mRS) score at 90 days, as their primary outcome. Radiologic outcomes included absolute (>6 mL) and proportional (>33%) hematoma growth at 24 hours. They used the intention to treat dataset from each trial in their statistical analyses and created generalized linear mixed models with prespecified covariables using a one-stage approach.
 

Variation by drug

A total of 7,094 studies were identified, of which 50 were eligible for inclusion. Their analysis encompassed 16 studies for which the respective investigators were willing to share patient-level data. The analysis included data on 6,221 patients. The mean age of the patients was 64.2 years, 36.4% were women, and the median time from symptom onset to randomization was 3.8 hours.

Mean National Institutes of Health Stroke Scale score was approximately 11. Mean systolic blood pressure at baseline was 177 mm Hg, and mean hematoma volume was approximately 10.6 mL.

The difference in blood pressure between the intensive and guideline groups was approximately 8 mm Hg at 1 hour and 12 mm Hg at 24 hours.

Intensive blood pressure management did not affect function at 90 days. The adjusted odds ratio for unfavorable shift in mRS scores was 0.97 (95% CI, 0.88-1.06; P = .503). Intensive blood pressure management did, however, reduce hematoma growth (absolute aOR, 0.75; 95% CI, 0.60-0.92; P = .007; relative aOR, 0.82; 95% CI, 0.68-0.99; P = .034).

In prespecified subgroup analyses, they found a trend toward adverse outcomes among patients who received renin-angiotensin blockers and a trend toward benefit for patients who received alpha- or beta-receptor antagonists or calcium channel blockers. They did not observe a clear association between time of treatment and outcome.

In addition to hematoma growth, other factors influence prognosis after ICH, such as the patient’s status before ICH (for example, cardiovascular risk factors, age, and hypertensive effects on the brain, kidneys, and heart), the location of ICH and its effects on surrounding structures, and complications of care in hospitals, such as infection and bleeding, said Dr. Anderson.

They are conducting two ongoing clinical trials in patients with ICH. One, INTERACT3, is evaluating a “care bundle” quality control package that includes early intensive blood pressure lowering for patients with large ICH who undergo surgery.

The other, INTERACT4, is evaluating early blood pressure control in the ambulance for patients with suspected acute stroke. At least one-fifth of those patients will have ICH, said Dr. Anderson.
 

Prevention is essential

Among patients with ICH, much of the bleeding occurs before presentation at the hospital, Louis R. Caplan, MD, a neurologist at Beth Israel Deaconess Medical Center, Boston, said in an interview. Furthermore, the bleeding mainly occurs in the deep part of the brain where most of the important motor tracts are. “If those tracts are already hit, a little extra blood isn’t going to change things,” said Dr. Caplan, who was not involved in the research.

In addition, blood is pushed from inside the brain to the periphery until the pressure outside the brain is equal to the pressure inside it. “You can decrease the amount of bleeding significantly, but it probably doesn’t affect the outcome,” said Dr. Caplan.

One factor in patients’ apparent lack of functional improvement is that the mRS is not sensitive to minor changes in disability, he said. “You have to show a pretty important change for it to make a difference,” said Dr. Caplan.

In addition, recovery from a hemorrhage takes much longer than recovery from an infarct. Examining the population at 6 months would have been preferable to examining them at 90 days, but the investigators might not have 6-month data, said Dr. Caplan.

“The main thing is really prevention,” he concluded.

The study was conducted with funding from Takeda. Dr. Anderson reported receiving funding from the National Health and Medical Research Council of Australia and speaker fees from Takeda. Dr. Caplan has disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Contrary to historical evidence, among older people, elevated LDL cholesterol levels increase risk for heart attack and cardiovascular disease, and older patients benefit as much, if not more, from statins and other cholesterol-lowering drugs than do younger people, two new studies show.

“By contrast with previous historical studies, our data show that LDL cholesterol is an important risk factor for myocardial infarction and atherosclerotic cardiovascular disease in a contemporary primary prevention cohort of individuals aged 70 to 100 years,” Borge Nordestgaard, MD, of the University of Copenhagen, and colleagues noted in the first of the two studies, published this week in the Lancet.

“By lowering LDL cholesterol in healthy individuals aged 70-100 years, the potential for preventing myocardial infarctions and atherosclerotic cardiovascular disease is huge, and at a substantially lower number needed to treat when compared with those aged 20-69 years,” they added.

“These findings support the concept of the cumulative burden of LDL cholesterol over one’s lifetime and the progressive increase in risk for atherosclerotic cardiovascular disease, including myocardial infarction, with age,” added Frederick J. Raal, PhD, and Farzahna Mohamed, MB BCh, of the University of the Witwatersrand, Johannesburg, South Africa, in an editorial published with both new studies in the Lancet (2020 Nov 10. doi: 10.1016/S0140-6736[20]32333-3).

The studies underscore the need for clinicians to consider continued risks associated with elevated LDL cholesterol in older age, they stressed, adding that statins are also beneficial for younger persons at risk to prevent conditions from worsening.

“The average age of patients in all the trials analyzed was older than 60 years, an age when atherosclerotic cardiovascular disease is already well established,” the editorialists wrote.

“Lipid-lowering therapy should be initiated at a younger age, preferably before age 40 years, in those at risk to delay the onset of atherosclerosis, rather than try to manage the condition once fully established or advanced,” they stressed.
 

No RCTs have included patients older than 70

For persons aged 40-75 years, elevated LDL cholesterol levels are a known risk factor for MI and atherosclerotic cardiovascular disease, and there is consensus in guidelines regarding treatment with statins.

However, the risk for people older than 70 is controversial. Some studies show little or no association between elevated LDL cholesterol levels and an increased risk for MI.

Contributing to the uncertainty is that few of the randomized, controlled trials that have investigated the question have included patients aged older than 70 years.

As a consequence, many practice guidelines have noted that the level of evidence in older patients is low, and some organizations have lowered the strength of recommendations regarding the treatment for older patients in comparison with younger patients.
 

Primary prevention: CV events increase with elevated LDL cholesterol in older age

Dr. Nordestgaard and colleagues studied data on 91,131 people living in Copenhagen who did not have atherosclerotic cardiovascular disease or diabetes at baseline and were not taking statins.

Of the participants, 10,592 were aged 70-79 years, and 3,188 participants were aged 80-100 years.

Over an average follow-up period of 7.7 years, 1,515 participants had a first MI, and 3,389 developed atherosclerotic cardiovascular disease.

In the primary-prevention cohort, after multivariate adjustment, the risk of having a heart attack per 1.0 mmol/L increase in LDL cholesterol was increased in the group overall (hazard ratio, 1.34). The increased risk was observed for all age groups, including those aged 80-100 years (HR, 1.28), 70-79 (HR, 1.25), 60-69 (HR, 1.29), 50-59 (HR, 1.28), and 20-49 (HR, 1.68).

Risk for atherosclerotic cardiovascular disease was also raised per 1.0 mmol/L increase in LDL cholesterol overall (HR, 1.16) and in all age groups, particularly those aged 70-100 years.

Greater elevations in LDL cholesterol (5.0 mmol/L or higher, indicative of possible familial hypercholesterolemia) were associated with a notably higher risk for heart attack after multivariate adjustment in people aged 80-100 (HR, 2.99). Risk was also higher among those aged 70-79 (HR, 1.82).

The highest incidence was in those older than 70. The rate was 8.5 heart attacks per 1,000 people per year among those aged 80-100 and 5.2 heart attacks per 1,000 in those aged 70-79. The rates were 2.5 per 1,000 among those 60-69, 1.8 for those aged 50-59, and 0.8 for those aged 20-49.

“The absolute risk [of cardiovascular events] is of course much higher in the elderly than those under the age of 75, but what was a surprise was how clear our results were on a relative risk scale, that the risk associated with elevated LDL [cholesterol] was as high in people aged 80-100 as the younger patients,” Dr. Nordestgaard said in an interview.

With regard to the benefits of cholesterol-lowering drugs, the study showed that the number needed to prevent one heart attack over 5 years was 80 among those aged 80-100; the number was 439 for people aged 50-59.

With regard to stronger statins, when moderate-intensity statins were used, the number needed to treat to prevent one cardiovascular disease event of any type dropped to 42 for patients aged 80-100. It was 88 for those aged 70-79, 164 for those aged 60-69, 345 for those aged 50-59, and 769 for those aged 20-49.

“The clinical significance of this is that it appears those in older age groups indeed benefit from cholesterol-lowering therapy,” Dr. Nordestgaard said. “I think many people have this idea that LDL [cholesterol] is not important over the age of about 70-75, but that’s not the case.”

“These robust findings are novel,” he and his colleagues stressed.

Despite these observational findings, the South African editorialists noted that “whether lipid-lowering therapy should be initiated for primary prevention in people aged 75 years or older is unclear,” owing to the host of risks and benefits that need to be balanced.

The findings of an ongoing randomized, placebo-controlled trial (STAREE) may answer this question, they wrote. It is investigating primary prevention in 18,000 older patients (≥70 years) who are being randomly assigned to receive atorvastatin 40 mg/d or placebo. The study is seeking to determine whether statin treatment extends the length of a disability-free life, which will be assessed on the basis of survival outside permanent residential care. Results are expected in 2022-2023.
 

Unequivocal reductions in events in elderly, comparable with younger patients

In the second study (Lancet. 2020 Nov 10. doi: 10.1016/S0140-6736[20]32332-1), Baris Gencer, MD, of Brigham and Women’s Hospital, Boston, =and colleagues evaluated the effects of statins and other cholesterol-lowering drugs, including ezetimibe and proprotein convertase subtilisin/kexin type 9 inhibitors, in older versus younger patients.

The systematic review and meta-analysis of 29 randomized controlled trials, also published in the Lancet, were presented virtually as a poster as part of the 2020 American Heart Association scientific session. It included data on 244,090 patients, including 21,492 aged 75 years and older.

The meta-analysis included studies of cardiovascular outcomes of a guideline-recommended LDL cholesterol–lowering drug, with a median follow-up of at least 2 years and inclusion of data on patients aged 75 years and older.

The results showed that over a median follow-up of 2.2 to 6 years, statin use by older patients was associated with a relative risk reduction of major vascular events of 26% per 1 mmol/L reduction in LDL cholesterol (P = .0019), which was comparable with a risk reduction of 15% per 1 mmol/L reduction in LDL cholesterol for patients younger than 75 years (P = .37, compared with older patients).

Treatment of older patients with LDL cholesterol–lowering drugs was also associated with significantly improved outcomes in cardiovascular death (risk ratio, 0.85), MI (RR, 0.80), stroke (RR, 0.73), and coronary revascularization (RR, 0.80).

“We found an unequivocal reduction in the risk of major vascular events with both statin and nonstatin LDL cholesterol-lowering treatments, which was similar to that seen in younger patients,” the authors wrote.

“Cholesterol-lowering medications are affordable drugs that have reduced risk of heart disease for millions of people worldwide, but until now, their benefits for older people have remained less certain,” said lead author Marc Sabatine, MD, also of Brigham and Women’s Hospital, in a Lancet press release.

“Our analysis indicates that these therapies are as effective in reducing cardiovascular events and deaths in people aged 75 years and over as they are in younger people. We found no offsetting safety concerns, and together, these results should strengthen guideline recommendations for the use of cholesterol-lowering medications, including statin and nonstatin therapy, in elderly people.”

The editorialists agreed: “More than 80% of fatal cardiovascular events occur in individuals older than 65 years, and the incidence of cardiovascular events is increasing in those older than 80 years; therefore, the findings of Gencer and colleagues’ study should encourage the use of lipid-lowering therapy in older patients.”

The authors of the two studies have disclosed no relevant financial relationships. Dr. Raal has received research grants, honoraria, or consulting fees for advisory board membership, professional input, and lectures on lipid-lowering drug therapy from Amgen, Regeneron, Sanofi, Novartis, and the Medicines Company.

A version of this article originally appeared on Medscape.com.

Contrary to historical evidence, among older people, elevated LDL cholesterol levels increase risk for heart attack and cardiovascular disease, and older patients benefit as much, if not more, from statins and other cholesterol-lowering drugs than do younger people, two new studies show.

“By contrast with previous historical studies, our data show that LDL cholesterol is an important risk factor for myocardial infarction and atherosclerotic cardiovascular disease in a contemporary primary prevention cohort of individuals aged 70 to 100 years,” Borge Nordestgaard, MD, of the University of Copenhagen, and colleagues noted in the first of the two studies, published this week in the Lancet.

“By lowering LDL cholesterol in healthy individuals aged 70-100 years, the potential for preventing myocardial infarctions and atherosclerotic cardiovascular disease is huge, and at a substantially lower number needed to treat when compared with those aged 20-69 years,” they added.

“These findings support the concept of the cumulative burden of LDL cholesterol over one’s lifetime and the progressive increase in risk for atherosclerotic cardiovascular disease, including myocardial infarction, with age,” added Frederick J. Raal, PhD, and Farzahna Mohamed, MB BCh, of the University of the Witwatersrand, Johannesburg, South Africa, in an editorial published with both new studies in the Lancet (2020 Nov 10. doi: 10.1016/S0140-6736[20]32333-3).

The studies underscore the need for clinicians to consider continued risks associated with elevated LDL cholesterol in older age, they stressed, adding that statins are also beneficial for younger persons at risk to prevent conditions from worsening.

“The average age of patients in all the trials analyzed was older than 60 years, an age when atherosclerotic cardiovascular disease is already well established,” the editorialists wrote.

“Lipid-lowering therapy should be initiated at a younger age, preferably before age 40 years, in those at risk to delay the onset of atherosclerosis, rather than try to manage the condition once fully established or advanced,” they stressed.
 

No RCTs have included patients older than 70

For persons aged 40-75 years, elevated LDL cholesterol levels are a known risk factor for MI and atherosclerotic cardiovascular disease, and there is consensus in guidelines regarding treatment with statins.

However, the risk for people older than 70 is controversial. Some studies show little or no association between elevated LDL cholesterol levels and an increased risk for MI.

Contributing to the uncertainty is that few of the randomized, controlled trials that have investigated the question have included patients aged older than 70 years.

As a consequence, many practice guidelines have noted that the level of evidence in older patients is low, and some organizations have lowered the strength of recommendations regarding the treatment for older patients in comparison with younger patients.
 

Primary prevention: CV events increase with elevated LDL cholesterol in older age

Dr. Nordestgaard and colleagues studied data on 91,131 people living in Copenhagen who did not have atherosclerotic cardiovascular disease or diabetes at baseline and were not taking statins.

Of the participants, 10,592 were aged 70-79 years, and 3,188 participants were aged 80-100 years.

Over an average follow-up period of 7.7 years, 1,515 participants had a first MI, and 3,389 developed atherosclerotic cardiovascular disease.

In the primary-prevention cohort, after multivariate adjustment, the risk of having a heart attack per 1.0 mmol/L increase in LDL cholesterol was increased in the group overall (hazard ratio, 1.34). The increased risk was observed for all age groups, including those aged 80-100 years (HR, 1.28), 70-79 (HR, 1.25), 60-69 (HR, 1.29), 50-59 (HR, 1.28), and 20-49 (HR, 1.68).

Risk for atherosclerotic cardiovascular disease was also raised per 1.0 mmol/L increase in LDL cholesterol overall (HR, 1.16) and in all age groups, particularly those aged 70-100 years.

Greater elevations in LDL cholesterol (5.0 mmol/L or higher, indicative of possible familial hypercholesterolemia) were associated with a notably higher risk for heart attack after multivariate adjustment in people aged 80-100 (HR, 2.99). Risk was also higher among those aged 70-79 (HR, 1.82).

The highest incidence was in those older than 70. The rate was 8.5 heart attacks per 1,000 people per year among those aged 80-100 and 5.2 heart attacks per 1,000 in those aged 70-79. The rates were 2.5 per 1,000 among those 60-69, 1.8 for those aged 50-59, and 0.8 for those aged 20-49.

“The absolute risk [of cardiovascular events] is of course much higher in the elderly than those under the age of 75, but what was a surprise was how clear our results were on a relative risk scale, that the risk associated with elevated LDL [cholesterol] was as high in people aged 80-100 as the younger patients,” Dr. Nordestgaard said in an interview.

With regard to the benefits of cholesterol-lowering drugs, the study showed that the number needed to prevent one heart attack over 5 years was 80 among those aged 80-100; the number was 439 for people aged 50-59.

With regard to stronger statins, when moderate-intensity statins were used, the number needed to treat to prevent one cardiovascular disease event of any type dropped to 42 for patients aged 80-100. It was 88 for those aged 70-79, 164 for those aged 60-69, 345 for those aged 50-59, and 769 for those aged 20-49.

“The clinical significance of this is that it appears those in older age groups indeed benefit from cholesterol-lowering therapy,” Dr. Nordestgaard said. “I think many people have this idea that LDL [cholesterol] is not important over the age of about 70-75, but that’s not the case.”

“These robust findings are novel,” he and his colleagues stressed.

Despite these observational findings, the South African editorialists noted that “whether lipid-lowering therapy should be initiated for primary prevention in people aged 75 years or older is unclear,” owing to the host of risks and benefits that need to be balanced.

The findings of an ongoing randomized, placebo-controlled trial (STAREE) may answer this question, they wrote. It is investigating primary prevention in 18,000 older patients (≥70 years) who are being randomly assigned to receive atorvastatin 40 mg/d or placebo. The study is seeking to determine whether statin treatment extends the length of a disability-free life, which will be assessed on the basis of survival outside permanent residential care. Results are expected in 2022-2023.
 

Unequivocal reductions in events in elderly, comparable with younger patients

In the second study (Lancet. 2020 Nov 10. doi: 10.1016/S0140-6736[20]32332-1), Baris Gencer, MD, of Brigham and Women’s Hospital, Boston, =and colleagues evaluated the effects of statins and other cholesterol-lowering drugs, including ezetimibe and proprotein convertase subtilisin/kexin type 9 inhibitors, in older versus younger patients.

The systematic review and meta-analysis of 29 randomized controlled trials, also published in the Lancet, were presented virtually as a poster as part of the 2020 American Heart Association scientific session. It included data on 244,090 patients, including 21,492 aged 75 years and older.

The meta-analysis included studies of cardiovascular outcomes of a guideline-recommended LDL cholesterol–lowering drug, with a median follow-up of at least 2 years and inclusion of data on patients aged 75 years and older.

The results showed that over a median follow-up of 2.2 to 6 years, statin use by older patients was associated with a relative risk reduction of major vascular events of 26% per 1 mmol/L reduction in LDL cholesterol (P = .0019), which was comparable with a risk reduction of 15% per 1 mmol/L reduction in LDL cholesterol for patients younger than 75 years (P = .37, compared with older patients).

Treatment of older patients with LDL cholesterol–lowering drugs was also associated with significantly improved outcomes in cardiovascular death (risk ratio, 0.85), MI (RR, 0.80), stroke (RR, 0.73), and coronary revascularization (RR, 0.80).

“We found an unequivocal reduction in the risk of major vascular events with both statin and nonstatin LDL cholesterol-lowering treatments, which was similar to that seen in younger patients,” the authors wrote.

“Cholesterol-lowering medications are affordable drugs that have reduced risk of heart disease for millions of people worldwide, but until now, their benefits for older people have remained less certain,” said lead author Marc Sabatine, MD, also of Brigham and Women’s Hospital, in a Lancet press release.

“Our analysis indicates that these therapies are as effective in reducing cardiovascular events and deaths in people aged 75 years and over as they are in younger people. We found no offsetting safety concerns, and together, these results should strengthen guideline recommendations for the use of cholesterol-lowering medications, including statin and nonstatin therapy, in elderly people.”

The editorialists agreed: “More than 80% of fatal cardiovascular events occur in individuals older than 65 years, and the incidence of cardiovascular events is increasing in those older than 80 years; therefore, the findings of Gencer and colleagues’ study should encourage the use of lipid-lowering therapy in older patients.”

The authors of the two studies have disclosed no relevant financial relationships. Dr. Raal has received research grants, honoraria, or consulting fees for advisory board membership, professional input, and lectures on lipid-lowering drug therapy from Amgen, Regeneron, Sanofi, Novartis, and the Medicines Company.

A version of this article originally appeared on Medscape.com.

Contrary to historical evidence, among older people, elevated LDL cholesterol levels increase risk for heart attack and cardiovascular disease, and older patients benefit as much, if not more, from statins and other cholesterol-lowering drugs than do younger people, two new studies show.

“By contrast with previous historical studies, our data show that LDL cholesterol is an important risk factor for myocardial infarction and atherosclerotic cardiovascular disease in a contemporary primary prevention cohort of individuals aged 70 to 100 years,” Borge Nordestgaard, MD, of the University of Copenhagen, and colleagues noted in the first of the two studies, published this week in the Lancet.

“By lowering LDL cholesterol in healthy individuals aged 70-100 years, the potential for preventing myocardial infarctions and atherosclerotic cardiovascular disease is huge, and at a substantially lower number needed to treat when compared with those aged 20-69 years,” they added.

“These findings support the concept of the cumulative burden of LDL cholesterol over one’s lifetime and the progressive increase in risk for atherosclerotic cardiovascular disease, including myocardial infarction, with age,” added Frederick J. Raal, PhD, and Farzahna Mohamed, MB BCh, of the University of the Witwatersrand, Johannesburg, South Africa, in an editorial published with both new studies in the Lancet (2020 Nov 10. doi: 10.1016/S0140-6736[20]32333-3).

The studies underscore the need for clinicians to consider continued risks associated with elevated LDL cholesterol in older age, they stressed, adding that statins are also beneficial for younger persons at risk to prevent conditions from worsening.

“The average age of patients in all the trials analyzed was older than 60 years, an age when atherosclerotic cardiovascular disease is already well established,” the editorialists wrote.

“Lipid-lowering therapy should be initiated at a younger age, preferably before age 40 years, in those at risk to delay the onset of atherosclerosis, rather than try to manage the condition once fully established or advanced,” they stressed.
 

No RCTs have included patients older than 70

For persons aged 40-75 years, elevated LDL cholesterol levels are a known risk factor for MI and atherosclerotic cardiovascular disease, and there is consensus in guidelines regarding treatment with statins.

However, the risk for people older than 70 is controversial. Some studies show little or no association between elevated LDL cholesterol levels and an increased risk for MI.

Contributing to the uncertainty is that few of the randomized, controlled trials that have investigated the question have included patients aged older than 70 years.

As a consequence, many practice guidelines have noted that the level of evidence in older patients is low, and some organizations have lowered the strength of recommendations regarding the treatment for older patients in comparison with younger patients.
 

Primary prevention: CV events increase with elevated LDL cholesterol in older age

Dr. Nordestgaard and colleagues studied data on 91,131 people living in Copenhagen who did not have atherosclerotic cardiovascular disease or diabetes at baseline and were not taking statins.

Of the participants, 10,592 were aged 70-79 years, and 3,188 participants were aged 80-100 years.

Over an average follow-up period of 7.7 years, 1,515 participants had a first MI, and 3,389 developed atherosclerotic cardiovascular disease.

In the primary-prevention cohort, after multivariate adjustment, the risk of having a heart attack per 1.0 mmol/L increase in LDL cholesterol was increased in the group overall (hazard ratio, 1.34). The increased risk was observed for all age groups, including those aged 80-100 years (HR, 1.28), 70-79 (HR, 1.25), 60-69 (HR, 1.29), 50-59 (HR, 1.28), and 20-49 (HR, 1.68).

Risk for atherosclerotic cardiovascular disease was also raised per 1.0 mmol/L increase in LDL cholesterol overall (HR, 1.16) and in all age groups, particularly those aged 70-100 years.

Greater elevations in LDL cholesterol (5.0 mmol/L or higher, indicative of possible familial hypercholesterolemia) were associated with a notably higher risk for heart attack after multivariate adjustment in people aged 80-100 (HR, 2.99). Risk was also higher among those aged 70-79 (HR, 1.82).

The highest incidence was in those older than 70. The rate was 8.5 heart attacks per 1,000 people per year among those aged 80-100 and 5.2 heart attacks per 1,000 in those aged 70-79. The rates were 2.5 per 1,000 among those 60-69, 1.8 for those aged 50-59, and 0.8 for those aged 20-49.

“The absolute risk [of cardiovascular events] is of course much higher in the elderly than those under the age of 75, but what was a surprise was how clear our results were on a relative risk scale, that the risk associated with elevated LDL [cholesterol] was as high in people aged 80-100 as the younger patients,” Dr. Nordestgaard said in an interview.

With regard to the benefits of cholesterol-lowering drugs, the study showed that the number needed to prevent one heart attack over 5 years was 80 among those aged 80-100; the number was 439 for people aged 50-59.

With regard to stronger statins, when moderate-intensity statins were used, the number needed to treat to prevent one cardiovascular disease event of any type dropped to 42 for patients aged 80-100. It was 88 for those aged 70-79, 164 for those aged 60-69, 345 for those aged 50-59, and 769 for those aged 20-49.

“The clinical significance of this is that it appears those in older age groups indeed benefit from cholesterol-lowering therapy,” Dr. Nordestgaard said. “I think many people have this idea that LDL [cholesterol] is not important over the age of about 70-75, but that’s not the case.”

“These robust findings are novel,” he and his colleagues stressed.

Despite these observational findings, the South African editorialists noted that “whether lipid-lowering therapy should be initiated for primary prevention in people aged 75 years or older is unclear,” owing to the host of risks and benefits that need to be balanced.

The findings of an ongoing randomized, placebo-controlled trial (STAREE) may answer this question, they wrote. It is investigating primary prevention in 18,000 older patients (≥70 years) who are being randomly assigned to receive atorvastatin 40 mg/d or placebo. The study is seeking to determine whether statin treatment extends the length of a disability-free life, which will be assessed on the basis of survival outside permanent residential care. Results are expected in 2022-2023.
 

Unequivocal reductions in events in elderly, comparable with younger patients

In the second study (Lancet. 2020 Nov 10. doi: 10.1016/S0140-6736[20]32332-1), Baris Gencer, MD, of Brigham and Women’s Hospital, Boston, =and colleagues evaluated the effects of statins and other cholesterol-lowering drugs, including ezetimibe and proprotein convertase subtilisin/kexin type 9 inhibitors, in older versus younger patients.

The systematic review and meta-analysis of 29 randomized controlled trials, also published in the Lancet, were presented virtually as a poster as part of the 2020 American Heart Association scientific session. It included data on 244,090 patients, including 21,492 aged 75 years and older.

The meta-analysis included studies of cardiovascular outcomes of a guideline-recommended LDL cholesterol–lowering drug, with a median follow-up of at least 2 years and inclusion of data on patients aged 75 years and older.

The results showed that over a median follow-up of 2.2 to 6 years, statin use by older patients was associated with a relative risk reduction of major vascular events of 26% per 1 mmol/L reduction in LDL cholesterol (P = .0019), which was comparable with a risk reduction of 15% per 1 mmol/L reduction in LDL cholesterol for patients younger than 75 years (P = .37, compared with older patients).

Treatment of older patients with LDL cholesterol–lowering drugs was also associated with significantly improved outcomes in cardiovascular death (risk ratio, 0.85), MI (RR, 0.80), stroke (RR, 0.73), and coronary revascularization (RR, 0.80).

“We found an unequivocal reduction in the risk of major vascular events with both statin and nonstatin LDL cholesterol-lowering treatments, which was similar to that seen in younger patients,” the authors wrote.

“Cholesterol-lowering medications are affordable drugs that have reduced risk of heart disease for millions of people worldwide, but until now, their benefits for older people have remained less certain,” said lead author Marc Sabatine, MD, also of Brigham and Women’s Hospital, in a Lancet press release.

“Our analysis indicates that these therapies are as effective in reducing cardiovascular events and deaths in people aged 75 years and over as they are in younger people. We found no offsetting safety concerns, and together, these results should strengthen guideline recommendations for the use of cholesterol-lowering medications, including statin and nonstatin therapy, in elderly people.”

The editorialists agreed: “More than 80% of fatal cardiovascular events occur in individuals older than 65 years, and the incidence of cardiovascular events is increasing in those older than 80 years; therefore, the findings of Gencer and colleagues’ study should encourage the use of lipid-lowering therapy in older patients.”

The authors of the two studies have disclosed no relevant financial relationships. Dr. Raal has received research grants, honoraria, or consulting fees for advisory board membership, professional input, and lectures on lipid-lowering drug therapy from Amgen, Regeneron, Sanofi, Novartis, and the Medicines Company.

A version of this article originally appeared on Medscape.com.

Concussion is associated with increased risk for subsequent development of attention-deficit/hyperactivity disorder (ADHD), as well as dementia and Parkinson’s disease, new research suggests. Results from a retrospective, population-based cohort study showed that controlling for socioeconomic status and overall health did not significantly affect this association.

The link between concussion and risk for ADHD and for mood and anxiety disorder was stronger in the women than in the men. In addition, having a history of multiple concussions strengthened the association between concussion and subsequent mood and anxiety disorder, dementia, and Parkinson’s disease compared with experiencing just one concussion.

The findings are similar to those of previous studies, noted lead author Marc P. Morissette, PhD, research assistant at the Pan Am Clinic Foundation in Winnipeg, Manitoba, Canada. “The main methodological differences separating our study from previous studies in this area is a focus on concussion-specific injuries identified from medical records and the potential for study participants to have up to 25 years of follow-up data,” said Dr. Morissette.

The findings were published online July 27 in Family Medicine and Community Health, a BMJ journal.
 

Almost 190,000 participants

Several studies have shown associations between head injury and increased risk for ADHD, depression, anxiety, Alzheimer’s disease, and Parkinson’s disease. However, many of these studies relied on self-reported medical history, included all forms of traumatic brain injury, and failed to adjust for preexisting health conditions.

An improved understanding of concussion and the risks associated with it could help physicians manage their patients’ long-term needs, the investigators noted.

In the current study, the researchers examined anonymized administrative health data collected between the periods of 1990–1991 and 2014–2015 in the Manitoba Population Research Data Repository at the Manitoba Center for Health Policy.

Eligible patients had been diagnosed with concussion in accordance with standard criteria. Participants were excluded if they had been diagnosed with dementia or Parkinson’s disease before the incident concussion during the study period. The investigators matched three control participants to each included patient on the basis of age, sex, and location.

Study outcome was time from index date (date of first concussion) to diagnosis of ADHD, mood and anxiety disorder, dementia, or Parkinson’s disease. The researchers controlled for socioeconomic status using the Socioeconomic Factor Index, version 2 (SEFI2), and for preexisting medical conditions using the Charlson Comorbidity Index (CCI).

The study included 28,021 men (mean age, 25 years) and 19,462 women (mean age, 30 years) in the concussion group and 81,871 men (mean age, 25 years) and 57,159 women (mean age, 30 years) in the control group. Mean SEFI2 score was approximately −0.05, and mean CCI score was approximately 0.2.
 

Dose effect?

Results showed that concussion was associated with an increased risk for ADHD (hazard ratio [HR], 1.39), mood and anxiety disorder (HR, 1.72), dementia (HR, 1.72), and Parkinson’s disease (HR, 1.57).

After a concussion, the risk of developing ADHD was 28% higher and the risk of developing mood and anxiety disorder was 7% higher among women than among men. Gender was not associated with risk for dementia or Parkinson’s disease after concussion.

Sustaining a second concussion increased the strength of the association with risk for dementia compared with sustaining a single concussion (HR, 1.62). Similarly, sustaining more than three concussions increased the strength of the association with the risk for mood and anxiety disorders (HR for more than three vs one concussion, 1.22) and Parkinson›s disease (HR, 3.27).

A sensitivity analysis found similar associations between concussion and risk for mood and anxiety disorder among all age groups. Younger participants were at greater risk for ADHD, however, and older participants were at greater risk for dementia and Parkinson’s disease.

Increased awareness of concussion and the outcomes of interest, along with improved diagnostic tools, may have influenced the study’s findings, Dr. Morissette noted. “The sex-based differences may be due to either pathophysiological differences in response to concussive injuries or potentially a difference in willingness to seek medical care or share symptoms, concussion-related or otherwise, with a medical professional,” he said.

“We are hopeful that our findings will encourage practitioners to be cognizant of various conditions that may present in individuals who have previously experienced a concussion,” Dr. Morissette added. “If physicians are aware of the various associations identified following a concussion, it may lead to more thorough clinical examination at initial presentation, along with more dedicated care throughout the patient’s life.”
 

Association versus causation

Commenting on the research, Steven Erickson, MD, sports medicine specialist at Banner–University Medicine Neuroscience Institute, Phoenix, Ariz., noted that although the study showed an association between concussion and subsequent diagnosis of ADHD, anxiety, and Parkinson’s disease, “this association should not be misconstrued as causation.” He added that the study’s conclusions “are just as likely to be due to labeling theory” or a self-fulfilling prophecy.

“Patients diagnosed with ADHD, anxiety, or Parkinson’s disease may recall concussion and associate the two diagnoses; but patients who have not previously been diagnosed with a concussion cannot draw that conclusion,” said Dr. Erickson, who was not involved with the research.

Citing the apparent gender difference in the strength of the association between concussion and the outcomes of interest, Dr. Erickson noted that women are more likely to report symptoms in general “and therefore are more likely to be diagnosed with ADHD and anxiety disorders” because of differences in reporting rather than incidence of disease.

“Further research needs to be done to definitively determine a causal relationship between concussion and any psychiatric or neurologic diagnosis,” Dr. Erickson concluded.

The study was funded by the Pan Am Clinic Foundation. Dr. Morissette and Dr. Erickson have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Concussion is associated with increased risk for subsequent development of attention-deficit/hyperactivity disorder (ADHD), as well as dementia and Parkinson’s disease, new research suggests. Results from a retrospective, population-based cohort study showed that controlling for socioeconomic status and overall health did not significantly affect this association.

The link between concussion and risk for ADHD and for mood and anxiety disorder was stronger in the women than in the men. In addition, having a history of multiple concussions strengthened the association between concussion and subsequent mood and anxiety disorder, dementia, and Parkinson’s disease compared with experiencing just one concussion.

The findings are similar to those of previous studies, noted lead author Marc P. Morissette, PhD, research assistant at the Pan Am Clinic Foundation in Winnipeg, Manitoba, Canada. “The main methodological differences separating our study from previous studies in this area is a focus on concussion-specific injuries identified from medical records and the potential for study participants to have up to 25 years of follow-up data,” said Dr. Morissette.

The findings were published online July 27 in Family Medicine and Community Health, a BMJ journal.
 

Almost 190,000 participants

Several studies have shown associations between head injury and increased risk for ADHD, depression, anxiety, Alzheimer’s disease, and Parkinson’s disease. However, many of these studies relied on self-reported medical history, included all forms of traumatic brain injury, and failed to adjust for preexisting health conditions.

An improved understanding of concussion and the risks associated with it could help physicians manage their patients’ long-term needs, the investigators noted.

In the current study, the researchers examined anonymized administrative health data collected between the periods of 1990–1991 and 2014–2015 in the Manitoba Population Research Data Repository at the Manitoba Center for Health Policy.

Eligible patients had been diagnosed with concussion in accordance with standard criteria. Participants were excluded if they had been diagnosed with dementia or Parkinson’s disease before the incident concussion during the study period. The investigators matched three control participants to each included patient on the basis of age, sex, and location.

Study outcome was time from index date (date of first concussion) to diagnosis of ADHD, mood and anxiety disorder, dementia, or Parkinson’s disease. The researchers controlled for socioeconomic status using the Socioeconomic Factor Index, version 2 (SEFI2), and for preexisting medical conditions using the Charlson Comorbidity Index (CCI).

The study included 28,021 men (mean age, 25 years) and 19,462 women (mean age, 30 years) in the concussion group and 81,871 men (mean age, 25 years) and 57,159 women (mean age, 30 years) in the control group. Mean SEFI2 score was approximately −0.05, and mean CCI score was approximately 0.2.
 

Dose effect?

Results showed that concussion was associated with an increased risk for ADHD (hazard ratio [HR], 1.39), mood and anxiety disorder (HR, 1.72), dementia (HR, 1.72), and Parkinson’s disease (HR, 1.57).

After a concussion, the risk of developing ADHD was 28% higher and the risk of developing mood and anxiety disorder was 7% higher among women than among men. Gender was not associated with risk for dementia or Parkinson’s disease after concussion.

Sustaining a second concussion increased the strength of the association with risk for dementia compared with sustaining a single concussion (HR, 1.62). Similarly, sustaining more than three concussions increased the strength of the association with the risk for mood and anxiety disorders (HR for more than three vs one concussion, 1.22) and Parkinson›s disease (HR, 3.27).

A sensitivity analysis found similar associations between concussion and risk for mood and anxiety disorder among all age groups. Younger participants were at greater risk for ADHD, however, and older participants were at greater risk for dementia and Parkinson’s disease.

Increased awareness of concussion and the outcomes of interest, along with improved diagnostic tools, may have influenced the study’s findings, Dr. Morissette noted. “The sex-based differences may be due to either pathophysiological differences in response to concussive injuries or potentially a difference in willingness to seek medical care or share symptoms, concussion-related or otherwise, with a medical professional,” he said.

“We are hopeful that our findings will encourage practitioners to be cognizant of various conditions that may present in individuals who have previously experienced a concussion,” Dr. Morissette added. “If physicians are aware of the various associations identified following a concussion, it may lead to more thorough clinical examination at initial presentation, along with more dedicated care throughout the patient’s life.”
 

Association versus causation

Commenting on the research, Steven Erickson, MD, sports medicine specialist at Banner–University Medicine Neuroscience Institute, Phoenix, Ariz., noted that although the study showed an association between concussion and subsequent diagnosis of ADHD, anxiety, and Parkinson’s disease, “this association should not be misconstrued as causation.” He added that the study’s conclusions “are just as likely to be due to labeling theory” or a self-fulfilling prophecy.

“Patients diagnosed with ADHD, anxiety, or Parkinson’s disease may recall concussion and associate the two diagnoses; but patients who have not previously been diagnosed with a concussion cannot draw that conclusion,” said Dr. Erickson, who was not involved with the research.

Citing the apparent gender difference in the strength of the association between concussion and the outcomes of interest, Dr. Erickson noted that women are more likely to report symptoms in general “and therefore are more likely to be diagnosed with ADHD and anxiety disorders” because of differences in reporting rather than incidence of disease.

“Further research needs to be done to definitively determine a causal relationship between concussion and any psychiatric or neurologic diagnosis,” Dr. Erickson concluded.

The study was funded by the Pan Am Clinic Foundation. Dr. Morissette and Dr. Erickson have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Concussion is associated with increased risk for subsequent development of attention-deficit/hyperactivity disorder (ADHD), as well as dementia and Parkinson’s disease, new research suggests. Results from a retrospective, population-based cohort study showed that controlling for socioeconomic status and overall health did not significantly affect this association.

The link between concussion and risk for ADHD and for mood and anxiety disorder was stronger in the women than in the men. In addition, having a history of multiple concussions strengthened the association between concussion and subsequent mood and anxiety disorder, dementia, and Parkinson’s disease compared with experiencing just one concussion.

The findings are similar to those of previous studies, noted lead author Marc P. Morissette, PhD, research assistant at the Pan Am Clinic Foundation in Winnipeg, Manitoba, Canada. “The main methodological differences separating our study from previous studies in this area is a focus on concussion-specific injuries identified from medical records and the potential for study participants to have up to 25 years of follow-up data,” said Dr. Morissette.

The findings were published online July 27 in Family Medicine and Community Health, a BMJ journal.
 

Almost 190,000 participants

Several studies have shown associations between head injury and increased risk for ADHD, depression, anxiety, Alzheimer’s disease, and Parkinson’s disease. However, many of these studies relied on self-reported medical history, included all forms of traumatic brain injury, and failed to adjust for preexisting health conditions.

An improved understanding of concussion and the risks associated with it could help physicians manage their patients’ long-term needs, the investigators noted.

In the current study, the researchers examined anonymized administrative health data collected between the periods of 1990–1991 and 2014–2015 in the Manitoba Population Research Data Repository at the Manitoba Center for Health Policy.

Eligible patients had been diagnosed with concussion in accordance with standard criteria. Participants were excluded if they had been diagnosed with dementia or Parkinson’s disease before the incident concussion during the study period. The investigators matched three control participants to each included patient on the basis of age, sex, and location.

Study outcome was time from index date (date of first concussion) to diagnosis of ADHD, mood and anxiety disorder, dementia, or Parkinson’s disease. The researchers controlled for socioeconomic status using the Socioeconomic Factor Index, version 2 (SEFI2), and for preexisting medical conditions using the Charlson Comorbidity Index (CCI).

The study included 28,021 men (mean age, 25 years) and 19,462 women (mean age, 30 years) in the concussion group and 81,871 men (mean age, 25 years) and 57,159 women (mean age, 30 years) in the control group. Mean SEFI2 score was approximately −0.05, and mean CCI score was approximately 0.2.
 

Dose effect?

Results showed that concussion was associated with an increased risk for ADHD (hazard ratio [HR], 1.39), mood and anxiety disorder (HR, 1.72), dementia (HR, 1.72), and Parkinson’s disease (HR, 1.57).

After a concussion, the risk of developing ADHD was 28% higher and the risk of developing mood and anxiety disorder was 7% higher among women than among men. Gender was not associated with risk for dementia or Parkinson’s disease after concussion.

Sustaining a second concussion increased the strength of the association with risk for dementia compared with sustaining a single concussion (HR, 1.62). Similarly, sustaining more than three concussions increased the strength of the association with the risk for mood and anxiety disorders (HR for more than three vs one concussion, 1.22) and Parkinson›s disease (HR, 3.27).

A sensitivity analysis found similar associations between concussion and risk for mood and anxiety disorder among all age groups. Younger participants were at greater risk for ADHD, however, and older participants were at greater risk for dementia and Parkinson’s disease.

Increased awareness of concussion and the outcomes of interest, along with improved diagnostic tools, may have influenced the study’s findings, Dr. Morissette noted. “The sex-based differences may be due to either pathophysiological differences in response to concussive injuries or potentially a difference in willingness to seek medical care or share symptoms, concussion-related or otherwise, with a medical professional,” he said.

“We are hopeful that our findings will encourage practitioners to be cognizant of various conditions that may present in individuals who have previously experienced a concussion,” Dr. Morissette added. “If physicians are aware of the various associations identified following a concussion, it may lead to more thorough clinical examination at initial presentation, along with more dedicated care throughout the patient’s life.”
 

Association versus causation

Commenting on the research, Steven Erickson, MD, sports medicine specialist at Banner–University Medicine Neuroscience Institute, Phoenix, Ariz., noted that although the study showed an association between concussion and subsequent diagnosis of ADHD, anxiety, and Parkinson’s disease, “this association should not be misconstrued as causation.” He added that the study’s conclusions “are just as likely to be due to labeling theory” or a self-fulfilling prophecy.

“Patients diagnosed with ADHD, anxiety, or Parkinson’s disease may recall concussion and associate the two diagnoses; but patients who have not previously been diagnosed with a concussion cannot draw that conclusion,” said Dr. Erickson, who was not involved with the research.

Citing the apparent gender difference in the strength of the association between concussion and the outcomes of interest, Dr. Erickson noted that women are more likely to report symptoms in general “and therefore are more likely to be diagnosed with ADHD and anxiety disorders” because of differences in reporting rather than incidence of disease.

“Further research needs to be done to definitively determine a causal relationship between concussion and any psychiatric or neurologic diagnosis,” Dr. Erickson concluded.

The study was funded by the Pan Am Clinic Foundation. Dr. Morissette and Dr. Erickson have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

One in five COVID-19 patients are diagnosed with a psychiatric disorder such as anxiety or depression within 3 months of testing positive for the virus, new research suggests.

“People have been worried that COVID-19 survivors will be at greater risk of psychiatric disorders, and our findings in a large and detailed study show this to be true,” principal investigator Paul Harrison, BM, DM, professor of psychiatry, University of Oxford, Oxford, United Kingdom, said in a statement.

Health services “need to be ready to provide care, especially since our results are likely to be underestimates of the actual number of cases,” said Harrison.

The study also showed that having a psychiatric disorder independently increases the risk of getting COVID-19 – a finding that’s in line with research published earlier this month.

“Having a psychiatric illness should be added to the list of risk factors for COVID-19,” study coauthor Maxime Taquet, PhD, University of Oxford, said in the release.

The study was published online Nov. 9 in The Lancet Psychiatry.
 

Double the risk

The investigators took advantage of the TriNetX analytics network, which captured deidentified data from electronic health records of a total of 69.8 million patients from 54 healthcare organizations in the United States.

Of those patients, 62,354 adults were diagnosed with COVID-19 between Jan. 20 and Aug. 1, 2020.

To assess the psychiatric sequelae of COVID-19, the investigators created propensity score–matched cohorts of patients who had received a diagnosis of other conditions that represented a range of common acute presentations.

In 14 to 90 days after being diagnosed with COVID-19, 5.8% of patients received a first recorded diagnosis of psychiatric illness. Among patients with health problems other than COVID, 2.5% to 3.4% of patients received a psychiatric diagnosis, the authors report. The risk was greatest for anxiety disorders, depression, and insomnia.

Older COVID-19 patients had a two- to threefold increased risk for a first dementia diagnosis, a finding that supports an earlier UK study.

Some of this excess risk could reflect misdiagnosed cases of delirium or transient cognitive impairment due to reversible cerebral events, the authors noted.

The study also revealed a bidirectional relationship between mental illness and COVID-19. Individuals with a psychiatric diagnosis were about 65% more likely to be diagnosed with COVID-19 in comparison with their counterparts who did not have mental illness, independently of known physical health risk factors for COVID-19.

“We did not anticipate that psychiatric history would be an independent risk factor for COVID-19. This finding appears robust, being observed in all age strata and in both sexes, and was substantial,” the authors write.

At present, “we don’t understand what the explanation is for the associations between COVID and mental illness. We are looking into this in more detail to try and understand better what subgroups are particularly vulnerable in this regard,” Harrison told Medscape Medical News.
 

“Ambitious” research

Commenting on the findings for Medscape Medical News, Roy H. Perlis, MD, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, said this is “an ambitious effort to understand the short-term consequences of COVID in terms of brain diseases.”

Perlis said he’s not particularly surprised by the increase in psychiatric diagnoses among COVID-19 patients.

“After COVID infection, people are more likely to get close medical follow-up than usual. They’re more likely to be accessing the healthcare system; after all, they’ve already had COVID, so they’re probably less fearful of seeing their doctor. But, that probably also means they’re more likely to get a new diagnosis of something like depression,” he said.

Dementia may be the clearest illustration of this, Perlis said. “It seems less likely that dementia develops a month after COVID; more likely, something that happens during the illness leads someone to be more likely to diagnose dementia later on,” he noted.

Perlis cautioned against being “unnecessarily alarmed” by the findings in this study.

“We know that rates of depression in the UK and the US, as in much of the world, are substantially elevated right now. Much of this is likely a consequence of the stress and disruption that accompanies the pandemic,” said Perlis.

The study was funded by the National Institute for Health Research. Harrison has disclosed no relevant financial relationships. One author is an employee of TriNetX. Perlis has received consulting fees for service on scientific advisory boards of Belle Artificial Intelligence, Burrage Capital, Genomind, Psy Therapeutics, Outermost Therapeutics, RID Ventures, and Takeda. He holds equity in Psy Therapeutics and Outermost Therapeutics.
 

This article first appeared on Medscape.com.

One in five COVID-19 patients are diagnosed with a psychiatric disorder such as anxiety or depression within 3 months of testing positive for the virus, new research suggests.

“People have been worried that COVID-19 survivors will be at greater risk of psychiatric disorders, and our findings in a large and detailed study show this to be true,” principal investigator Paul Harrison, BM, DM, professor of psychiatry, University of Oxford, Oxford, United Kingdom, said in a statement.

Health services “need to be ready to provide care, especially since our results are likely to be underestimates of the actual number of cases,” said Harrison.

The study also showed that having a psychiatric disorder independently increases the risk of getting COVID-19 – a finding that’s in line with research published earlier this month.

“Having a psychiatric illness should be added to the list of risk factors for COVID-19,” study coauthor Maxime Taquet, PhD, University of Oxford, said in the release.

The study was published online Nov. 9 in The Lancet Psychiatry.
 

Double the risk

The investigators took advantage of the TriNetX analytics network, which captured deidentified data from electronic health records of a total of 69.8 million patients from 54 healthcare organizations in the United States.

Of those patients, 62,354 adults were diagnosed with COVID-19 between Jan. 20 and Aug. 1, 2020.

To assess the psychiatric sequelae of COVID-19, the investigators created propensity score–matched cohorts of patients who had received a diagnosis of other conditions that represented a range of common acute presentations.

In 14 to 90 days after being diagnosed with COVID-19, 5.8% of patients received a first recorded diagnosis of psychiatric illness. Among patients with health problems other than COVID, 2.5% to 3.4% of patients received a psychiatric diagnosis, the authors report. The risk was greatest for anxiety disorders, depression, and insomnia.

Older COVID-19 patients had a two- to threefold increased risk for a first dementia diagnosis, a finding that supports an earlier UK study.

Some of this excess risk could reflect misdiagnosed cases of delirium or transient cognitive impairment due to reversible cerebral events, the authors noted.

The study also revealed a bidirectional relationship between mental illness and COVID-19. Individuals with a psychiatric diagnosis were about 65% more likely to be diagnosed with COVID-19 in comparison with their counterparts who did not have mental illness, independently of known physical health risk factors for COVID-19.

“We did not anticipate that psychiatric history would be an independent risk factor for COVID-19. This finding appears robust, being observed in all age strata and in both sexes, and was substantial,” the authors write.

At present, “we don’t understand what the explanation is for the associations between COVID and mental illness. We are looking into this in more detail to try and understand better what subgroups are particularly vulnerable in this regard,” Harrison told Medscape Medical News.
 

“Ambitious” research

Commenting on the findings for Medscape Medical News, Roy H. Perlis, MD, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, said this is “an ambitious effort to understand the short-term consequences of COVID in terms of brain diseases.”

Perlis said he’s not particularly surprised by the increase in psychiatric diagnoses among COVID-19 patients.

“After COVID infection, people are more likely to get close medical follow-up than usual. They’re more likely to be accessing the healthcare system; after all, they’ve already had COVID, so they’re probably less fearful of seeing their doctor. But, that probably also means they’re more likely to get a new diagnosis of something like depression,” he said.

Dementia may be the clearest illustration of this, Perlis said. “It seems less likely that dementia develops a month after COVID; more likely, something that happens during the illness leads someone to be more likely to diagnose dementia later on,” he noted.

Perlis cautioned against being “unnecessarily alarmed” by the findings in this study.

“We know that rates of depression in the UK and the US, as in much of the world, are substantially elevated right now. Much of this is likely a consequence of the stress and disruption that accompanies the pandemic,” said Perlis.

The study was funded by the National Institute for Health Research. Harrison has disclosed no relevant financial relationships. One author is an employee of TriNetX. Perlis has received consulting fees for service on scientific advisory boards of Belle Artificial Intelligence, Burrage Capital, Genomind, Psy Therapeutics, Outermost Therapeutics, RID Ventures, and Takeda. He holds equity in Psy Therapeutics and Outermost Therapeutics.
 

This article first appeared on Medscape.com.

One in five COVID-19 patients are diagnosed with a psychiatric disorder such as anxiety or depression within 3 months of testing positive for the virus, new research suggests.

“People have been worried that COVID-19 survivors will be at greater risk of psychiatric disorders, and our findings in a large and detailed study show this to be true,” principal investigator Paul Harrison, BM, DM, professor of psychiatry, University of Oxford, Oxford, United Kingdom, said in a statement.

Health services “need to be ready to provide care, especially since our results are likely to be underestimates of the actual number of cases,” said Harrison.

The study also showed that having a psychiatric disorder independently increases the risk of getting COVID-19 – a finding that’s in line with research published earlier this month.

“Having a psychiatric illness should be added to the list of risk factors for COVID-19,” study coauthor Maxime Taquet, PhD, University of Oxford, said in the release.

The study was published online Nov. 9 in The Lancet Psychiatry.
 

Double the risk

The investigators took advantage of the TriNetX analytics network, which captured deidentified data from electronic health records of a total of 69.8 million patients from 54 healthcare organizations in the United States.

Of those patients, 62,354 adults were diagnosed with COVID-19 between Jan. 20 and Aug. 1, 2020.

To assess the psychiatric sequelae of COVID-19, the investigators created propensity score–matched cohorts of patients who had received a diagnosis of other conditions that represented a range of common acute presentations.

In 14 to 90 days after being diagnosed with COVID-19, 5.8% of patients received a first recorded diagnosis of psychiatric illness. Among patients with health problems other than COVID, 2.5% to 3.4% of patients received a psychiatric diagnosis, the authors report. The risk was greatest for anxiety disorders, depression, and insomnia.

Older COVID-19 patients had a two- to threefold increased risk for a first dementia diagnosis, a finding that supports an earlier UK study.

Some of this excess risk could reflect misdiagnosed cases of delirium or transient cognitive impairment due to reversible cerebral events, the authors noted.

The study also revealed a bidirectional relationship between mental illness and COVID-19. Individuals with a psychiatric diagnosis were about 65% more likely to be diagnosed with COVID-19 in comparison with their counterparts who did not have mental illness, independently of known physical health risk factors for COVID-19.

“We did not anticipate that psychiatric history would be an independent risk factor for COVID-19. This finding appears robust, being observed in all age strata and in both sexes, and was substantial,” the authors write.

At present, “we don’t understand what the explanation is for the associations between COVID and mental illness. We are looking into this in more detail to try and understand better what subgroups are particularly vulnerable in this regard,” Harrison told Medscape Medical News.
 

“Ambitious” research

Commenting on the findings for Medscape Medical News, Roy H. Perlis, MD, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, said this is “an ambitious effort to understand the short-term consequences of COVID in terms of brain diseases.”

Perlis said he’s not particularly surprised by the increase in psychiatric diagnoses among COVID-19 patients.

“After COVID infection, people are more likely to get close medical follow-up than usual. They’re more likely to be accessing the healthcare system; after all, they’ve already had COVID, so they’re probably less fearful of seeing their doctor. But, that probably also means they’re more likely to get a new diagnosis of something like depression,” he said.

Dementia may be the clearest illustration of this, Perlis said. “It seems less likely that dementia develops a month after COVID; more likely, something that happens during the illness leads someone to be more likely to diagnose dementia later on,” he noted.

Perlis cautioned against being “unnecessarily alarmed” by the findings in this study.

“We know that rates of depression in the UK and the US, as in much of the world, are substantially elevated right now. Much of this is likely a consequence of the stress and disruption that accompanies the pandemic,” said Perlis.

The study was funded by the National Institute for Health Research. Harrison has disclosed no relevant financial relationships. One author is an employee of TriNetX. Perlis has received consulting fees for service on scientific advisory boards of Belle Artificial Intelligence, Burrage Capital, Genomind, Psy Therapeutics, Outermost Therapeutics, RID Ventures, and Takeda. He holds equity in Psy Therapeutics and Outermost Therapeutics.
 

This article first appeared on Medscape.com.

Late-onset epilepsy is linked to a substantial increased risk of subsequent dementia. Results of a retrospective analysis show that patients who develop epilepsy at age 67 or older have a threefold increased risk of subsequent dementia versus their counterparts without epilepsy.

“This is an exciting area, as we are finding that just as the risk of seizures is increased in neurodegenerative diseases, the risk of dementia is increased after late-onset epilepsy and seizures,” study investigator Emily L. Johnson, MD, assistant professor of neurology at Johns Hopkins University, Baltimore, said in an interview. “Several other cohort studies are finding similar results, including the Veterans’ Health Study and the Framingham Study,” she added.

The study was published online Oct. 23 in Neurology
 

Bidirectional relationship?

Previous research has established that dementia is a risk factor for epilepsy, but recent studies also suggest an increased risk of incident dementia among patients with adult-onset epilepsy. Several risk factors for late-onset epilepsy, including diabetes and hypertension, also are risk factors for dementia. However, the effect of late-onset epilepsy on dementia risk in patients with these comorbidities has not been clarified.

To investigate, the researchers examined data from the Atherosclerosis Risk in Communities (ARIC) study. Participants include Black and White men and women from four U.S. communities. Baseline visits in this longitudinal cohort study began between 1987 and 1989, and follow-up included seven additional visits and regular phone calls.

The investigators identified participants with late-onset epilepsy by searching for Medicare claims related to seizures or epilepsy filed between 1991 and 2015. Those with two or more such claims and age of onset of 67 years or greater were considered to have late-onset epilepsy. Participants with preexisting conditions such as brain tumors or multiple sclerosis were excluded.

ARIC participants who presented in person for visits 2, 4, 5, and 6 underwent cognitive testing with the Delayed Word Recall Test, the Digit Symbol Substitution Test, and the Word Fluency Test.

Testing at visits 5 and 6 also included other tests, such as the Mini-Mental State Examination, the Boston Naming test, and the Wechsler Memory Scale-III. Dr. Johnson and colleagues excluded data for visit 7 from the analysis because dementia adjudication was not yet complete.

The researchers identified participants with dementia using data from visits 5 and 6 and ascertained time of dementia onset through participant and informant interviews, phone calls, and hospital discharge data. Participants also were screened for mild cognitive impairment (MCI) at visits 5 and 6.

Data were analyzed using a Cox proportional hazards model and multinomial logistic regression. In subsequent analyses, researchers adjusted the data for age, sex, race, smoking status, alcohol use, hypertension, diabetes, body mass index (BMI), APOE4 status, and prevalent stroke.

The researchers found that of 9,033 study participants, 671 had late-onset epilepsy. The late-onset epilepsy group was older at baseline (56.5 vs. 55.1 years) and more likely to have hypertension (38.9% vs. 33.3%), diabetes (16.1% vs. 9.6%), and two alleles of APOE4 genotype (3.9% vs. 2.5%), compared with those without the disorder.

In all, 1,687 participants developed dementia during follow-up. The rate of incident dementia was 41.6% in participants with late-onset epilepsy and 16.8% in participants without late-onset epilepsy. The adjusted hazard ratio of subsequent dementia in participants with late-onset epilepsy versus those without the disorder was 3.05 (95% confidence interval, 2.65-3.51).

The median time to dementia ascertainment after late-onset epilepsy was 3.66 years.
 

Counterintuitive finding

The relationship between late-onset epilepsy and subsequent dementia was stronger in patients without stroke. The investigators offered a possible explanation for this counterintuitive finding. “We observed an interaction between [late-onset epilepsy] and stroke, with a lower (but still substantial) association between [late-onset epilepsy] and dementia in those with a history of stroke. This may be due to the known strong association between stroke and dementia, which may wash out the contributions of [late-onset epilepsy] to cognitive impairment,” the researchers wrote.

“There may also be under-capturing of dementia diagnoses among participants with stroke in the ascertainment from [Centers for Medicare & Medicaid Services] codes, as physicians may be reluctant to make a separate code for ‘dementia’ in those with cognitive impairment after stroke,” they added.

When the researchers restricted the analysis only to participants who attended visits 5 and 6 and had late-onset epilepsy ascertainment available, they found that the relative risk ratio for dementia at visit 6 was 2.90 (95% CI, 1.22-6.92; P = .009). The RRR for MCI was 0.97 (95% CI, 0.39-2.38; P = .803). The greater functional impairment in patients with late-onset epilepsy may explain the lack of a relationship between late-onset epilepsy and MCI.

“It will be important for neurologists to be aware of the possibility of cognitive impairment following late-onset epilepsy and to check in with patients and family members to see if there are concerns,” said Dr. Johnson.

“We should also be talking about the importance of lowering other risk factors for dementia by making sure cardiovascular risk factors are controlled and encouraging physical and cognitive activity,” she added.

The results require confirmation in a clinical population, the investigators noted. In addition, future research is necessary to clarify whether seizures directly increase the risk of dementia or whether shared neuropathology between epilepsy and dementia explains the risk.

“In the near future, I plan to enroll participants with late-onset epilepsy in an observational study to better understand factors that may contribute to cognitive change. Collaborations will be key as we seek to further understand what causes these changes and what could be done to prevent them,” Dr. Johnson added.
 

Strengths and weaknesses

In an accompanying editorial, W. Allen Hauser, MD, professor emeritus of neurology and epidemiology at Columbia University in New York, and colleagues noted that the findings support a bidirectional relationship between dementia and epilepsy, adding that accumulation of amyloid beta peptide is a plausible underlying pathophysiology that may explain this relationship.

Future research should clarify the effect of factors such as seizure type, seizure frequency, and age of onset on the risk of dementia among patients with epilepsy, the editorialists wrote. Such investigations could help elucidate the underlying mechanisms of these conditions and help to improve treatment, they added.

Commenting on the findings, Ilo Leppik, MD, professor of neurology and pharmacy at the University of Minnesota in Minneapolis described the research as “a very well-done study by qualified researchers in the field. … For the last century, medicine has unfortunately become compartmentalized by specialty and then subspecialty. The brain and disorders of the brain do not recognize these silos. … It is not a stretch of the known science to begin to understand that epilepsy and dementia have common anatomical and physiological underpinnings.”

The long period of prospectively gathering data and the measurement of cognitive function through various modalities are among the study’s great strengths, said Dr. Leppik. However, the study’s weakness is its reliance on Medicare claims data, which mainly would reflect convulsive seizures.

“What is missing is how many persons had subtle focal-unaware seizures that may not be identified unless a careful history is taken,” said Dr. Leppik. “Thus, this study likely underestimates the frequency of epilepsy.”

Neurologists who evaluate a person with early dementia should be on the lookout for a history of subtle seizures, said Dr. Leppik. Animal studies suggest treatment with levetiracetam or brivaracetam may slow the course of dementia, and a clinical study in participants with early dementia is underway.

“Treatment with an antiseizure drug may prove to be beneficial, especially if evidence for the presence of subtle epilepsy can be found,” Dr. Leppik added.

Greater collaboration between epileptologists and dementia specialists and larger studies of antiseizure drugs are necessary, he noted. “These studies can incorporate sophisticated structural and biochemical [analyses] to better identify the relationships between brain mechanisms that likely underlie both seizures and dementia. The ultimate promise is that early treatment of seizures may alter the course of dementia,” Dr. Leppik said.

The study by Dr. Johnson and colleagues was supported by a contract from the National Institute on Aging; ARIC from the National Heart, Lung, and Blood Institute; the National Institutes of Health; and the Department of Health & Human Services. The authors and Dr. Leppik have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Late-onset epilepsy is linked to a substantial increased risk of subsequent dementia. Results of a retrospective analysis show that patients who develop epilepsy at age 67 or older have a threefold increased risk of subsequent dementia versus their counterparts without epilepsy.

“This is an exciting area, as we are finding that just as the risk of seizures is increased in neurodegenerative diseases, the risk of dementia is increased after late-onset epilepsy and seizures,” study investigator Emily L. Johnson, MD, assistant professor of neurology at Johns Hopkins University, Baltimore, said in an interview. “Several other cohort studies are finding similar results, including the Veterans’ Health Study and the Framingham Study,” she added.

The study was published online Oct. 23 in Neurology
 

Bidirectional relationship?

Previous research has established that dementia is a risk factor for epilepsy, but recent studies also suggest an increased risk of incident dementia among patients with adult-onset epilepsy. Several risk factors for late-onset epilepsy, including diabetes and hypertension, also are risk factors for dementia. However, the effect of late-onset epilepsy on dementia risk in patients with these comorbidities has not been clarified.

To investigate, the researchers examined data from the Atherosclerosis Risk in Communities (ARIC) study. Participants include Black and White men and women from four U.S. communities. Baseline visits in this longitudinal cohort study began between 1987 and 1989, and follow-up included seven additional visits and regular phone calls.

The investigators identified participants with late-onset epilepsy by searching for Medicare claims related to seizures or epilepsy filed between 1991 and 2015. Those with two or more such claims and age of onset of 67 years or greater were considered to have late-onset epilepsy. Participants with preexisting conditions such as brain tumors or multiple sclerosis were excluded.

ARIC participants who presented in person for visits 2, 4, 5, and 6 underwent cognitive testing with the Delayed Word Recall Test, the Digit Symbol Substitution Test, and the Word Fluency Test.

Testing at visits 5 and 6 also included other tests, such as the Mini-Mental State Examination, the Boston Naming test, and the Wechsler Memory Scale-III. Dr. Johnson and colleagues excluded data for visit 7 from the analysis because dementia adjudication was not yet complete.

The researchers identified participants with dementia using data from visits 5 and 6 and ascertained time of dementia onset through participant and informant interviews, phone calls, and hospital discharge data. Participants also were screened for mild cognitive impairment (MCI) at visits 5 and 6.

Data were analyzed using a Cox proportional hazards model and multinomial logistic regression. In subsequent analyses, researchers adjusted the data for age, sex, race, smoking status, alcohol use, hypertension, diabetes, body mass index (BMI), APOE4 status, and prevalent stroke.

The researchers found that of 9,033 study participants, 671 had late-onset epilepsy. The late-onset epilepsy group was older at baseline (56.5 vs. 55.1 years) and more likely to have hypertension (38.9% vs. 33.3%), diabetes (16.1% vs. 9.6%), and two alleles of APOE4 genotype (3.9% vs. 2.5%), compared with those without the disorder.

In all, 1,687 participants developed dementia during follow-up. The rate of incident dementia was 41.6% in participants with late-onset epilepsy and 16.8% in participants without late-onset epilepsy. The adjusted hazard ratio of subsequent dementia in participants with late-onset epilepsy versus those without the disorder was 3.05 (95% confidence interval, 2.65-3.51).

The median time to dementia ascertainment after late-onset epilepsy was 3.66 years.
 

Counterintuitive finding

The relationship between late-onset epilepsy and subsequent dementia was stronger in patients without stroke. The investigators offered a possible explanation for this counterintuitive finding. “We observed an interaction between [late-onset epilepsy] and stroke, with a lower (but still substantial) association between [late-onset epilepsy] and dementia in those with a history of stroke. This may be due to the known strong association between stroke and dementia, which may wash out the contributions of [late-onset epilepsy] to cognitive impairment,” the researchers wrote.

“There may also be under-capturing of dementia diagnoses among participants with stroke in the ascertainment from [Centers for Medicare & Medicaid Services] codes, as physicians may be reluctant to make a separate code for ‘dementia’ in those with cognitive impairment after stroke,” they added.

When the researchers restricted the analysis only to participants who attended visits 5 and 6 and had late-onset epilepsy ascertainment available, they found that the relative risk ratio for dementia at visit 6 was 2.90 (95% CI, 1.22-6.92; P = .009). The RRR for MCI was 0.97 (95% CI, 0.39-2.38; P = .803). The greater functional impairment in patients with late-onset epilepsy may explain the lack of a relationship between late-onset epilepsy and MCI.

“It will be important for neurologists to be aware of the possibility of cognitive impairment following late-onset epilepsy and to check in with patients and family members to see if there are concerns,” said Dr. Johnson.

“We should also be talking about the importance of lowering other risk factors for dementia by making sure cardiovascular risk factors are controlled and encouraging physical and cognitive activity,” she added.

The results require confirmation in a clinical population, the investigators noted. In addition, future research is necessary to clarify whether seizures directly increase the risk of dementia or whether shared neuropathology between epilepsy and dementia explains the risk.

“In the near future, I plan to enroll participants with late-onset epilepsy in an observational study to better understand factors that may contribute to cognitive change. Collaborations will be key as we seek to further understand what causes these changes and what could be done to prevent them,” Dr. Johnson added.
 

Strengths and weaknesses

In an accompanying editorial, W. Allen Hauser, MD, professor emeritus of neurology and epidemiology at Columbia University in New York, and colleagues noted that the findings support a bidirectional relationship between dementia and epilepsy, adding that accumulation of amyloid beta peptide is a plausible underlying pathophysiology that may explain this relationship.

Future research should clarify the effect of factors such as seizure type, seizure frequency, and age of onset on the risk of dementia among patients with epilepsy, the editorialists wrote. Such investigations could help elucidate the underlying mechanisms of these conditions and help to improve treatment, they added.

Commenting on the findings, Ilo Leppik, MD, professor of neurology and pharmacy at the University of Minnesota in Minneapolis described the research as “a very well-done study by qualified researchers in the field. … For the last century, medicine has unfortunately become compartmentalized by specialty and then subspecialty. The brain and disorders of the brain do not recognize these silos. … It is not a stretch of the known science to begin to understand that epilepsy and dementia have common anatomical and physiological underpinnings.”

The long period of prospectively gathering data and the measurement of cognitive function through various modalities are among the study’s great strengths, said Dr. Leppik. However, the study’s weakness is its reliance on Medicare claims data, which mainly would reflect convulsive seizures.

“What is missing is how many persons had subtle focal-unaware seizures that may not be identified unless a careful history is taken,” said Dr. Leppik. “Thus, this study likely underestimates the frequency of epilepsy.”

Neurologists who evaluate a person with early dementia should be on the lookout for a history of subtle seizures, said Dr. Leppik. Animal studies suggest treatment with levetiracetam or brivaracetam may slow the course of dementia, and a clinical study in participants with early dementia is underway.

“Treatment with an antiseizure drug may prove to be beneficial, especially if evidence for the presence of subtle epilepsy can be found,” Dr. Leppik added.

Greater collaboration between epileptologists and dementia specialists and larger studies of antiseizure drugs are necessary, he noted. “These studies can incorporate sophisticated structural and biochemical [analyses] to better identify the relationships between brain mechanisms that likely underlie both seizures and dementia. The ultimate promise is that early treatment of seizures may alter the course of dementia,” Dr. Leppik said.

The study by Dr. Johnson and colleagues was supported by a contract from the National Institute on Aging; ARIC from the National Heart, Lung, and Blood Institute; the National Institutes of Health; and the Department of Health & Human Services. The authors and Dr. Leppik have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Late-onset epilepsy is linked to a substantial increased risk of subsequent dementia. Results of a retrospective analysis show that patients who develop epilepsy at age 67 or older have a threefold increased risk of subsequent dementia versus their counterparts without epilepsy.

“This is an exciting area, as we are finding that just as the risk of seizures is increased in neurodegenerative diseases, the risk of dementia is increased after late-onset epilepsy and seizures,” study investigator Emily L. Johnson, MD, assistant professor of neurology at Johns Hopkins University, Baltimore, said in an interview. “Several other cohort studies are finding similar results, including the Veterans’ Health Study and the Framingham Study,” she added.

The study was published online Oct. 23 in Neurology
 

Bidirectional relationship?

Previous research has established that dementia is a risk factor for epilepsy, but recent studies also suggest an increased risk of incident dementia among patients with adult-onset epilepsy. Several risk factors for late-onset epilepsy, including diabetes and hypertension, also are risk factors for dementia. However, the effect of late-onset epilepsy on dementia risk in patients with these comorbidities has not been clarified.

To investigate, the researchers examined data from the Atherosclerosis Risk in Communities (ARIC) study. Participants include Black and White men and women from four U.S. communities. Baseline visits in this longitudinal cohort study began between 1987 and 1989, and follow-up included seven additional visits and regular phone calls.

The investigators identified participants with late-onset epilepsy by searching for Medicare claims related to seizures or epilepsy filed between 1991 and 2015. Those with two or more such claims and age of onset of 67 years or greater were considered to have late-onset epilepsy. Participants with preexisting conditions such as brain tumors or multiple sclerosis were excluded.

ARIC participants who presented in person for visits 2, 4, 5, and 6 underwent cognitive testing with the Delayed Word Recall Test, the Digit Symbol Substitution Test, and the Word Fluency Test.

Testing at visits 5 and 6 also included other tests, such as the Mini-Mental State Examination, the Boston Naming test, and the Wechsler Memory Scale-III. Dr. Johnson and colleagues excluded data for visit 7 from the analysis because dementia adjudication was not yet complete.

The researchers identified participants with dementia using data from visits 5 and 6 and ascertained time of dementia onset through participant and informant interviews, phone calls, and hospital discharge data. Participants also were screened for mild cognitive impairment (MCI) at visits 5 and 6.

Data were analyzed using a Cox proportional hazards model and multinomial logistic regression. In subsequent analyses, researchers adjusted the data for age, sex, race, smoking status, alcohol use, hypertension, diabetes, body mass index (BMI), APOE4 status, and prevalent stroke.

The researchers found that of 9,033 study participants, 671 had late-onset epilepsy. The late-onset epilepsy group was older at baseline (56.5 vs. 55.1 years) and more likely to have hypertension (38.9% vs. 33.3%), diabetes (16.1% vs. 9.6%), and two alleles of APOE4 genotype (3.9% vs. 2.5%), compared with those without the disorder.

In all, 1,687 participants developed dementia during follow-up. The rate of incident dementia was 41.6% in participants with late-onset epilepsy and 16.8% in participants without late-onset epilepsy. The adjusted hazard ratio of subsequent dementia in participants with late-onset epilepsy versus those without the disorder was 3.05 (95% confidence interval, 2.65-3.51).

The median time to dementia ascertainment after late-onset epilepsy was 3.66 years.
 

Counterintuitive finding

The relationship between late-onset epilepsy and subsequent dementia was stronger in patients without stroke. The investigators offered a possible explanation for this counterintuitive finding. “We observed an interaction between [late-onset epilepsy] and stroke, with a lower (but still substantial) association between [late-onset epilepsy] and dementia in those with a history of stroke. This may be due to the known strong association between stroke and dementia, which may wash out the contributions of [late-onset epilepsy] to cognitive impairment,” the researchers wrote.

“There may also be under-capturing of dementia diagnoses among participants with stroke in the ascertainment from [Centers for Medicare & Medicaid Services] codes, as physicians may be reluctant to make a separate code for ‘dementia’ in those with cognitive impairment after stroke,” they added.

When the researchers restricted the analysis only to participants who attended visits 5 and 6 and had late-onset epilepsy ascertainment available, they found that the relative risk ratio for dementia at visit 6 was 2.90 (95% CI, 1.22-6.92; P = .009). The RRR for MCI was 0.97 (95% CI, 0.39-2.38; P = .803). The greater functional impairment in patients with late-onset epilepsy may explain the lack of a relationship between late-onset epilepsy and MCI.

“It will be important for neurologists to be aware of the possibility of cognitive impairment following late-onset epilepsy and to check in with patients and family members to see if there are concerns,” said Dr. Johnson.

“We should also be talking about the importance of lowering other risk factors for dementia by making sure cardiovascular risk factors are controlled and encouraging physical and cognitive activity,” she added.

The results require confirmation in a clinical population, the investigators noted. In addition, future research is necessary to clarify whether seizures directly increase the risk of dementia or whether shared neuropathology between epilepsy and dementia explains the risk.

“In the near future, I plan to enroll participants with late-onset epilepsy in an observational study to better understand factors that may contribute to cognitive change. Collaborations will be key as we seek to further understand what causes these changes and what could be done to prevent them,” Dr. Johnson added.
 

Strengths and weaknesses

In an accompanying editorial, W. Allen Hauser, MD, professor emeritus of neurology and epidemiology at Columbia University in New York, and colleagues noted that the findings support a bidirectional relationship between dementia and epilepsy, adding that accumulation of amyloid beta peptide is a plausible underlying pathophysiology that may explain this relationship.

Future research should clarify the effect of factors such as seizure type, seizure frequency, and age of onset on the risk of dementia among patients with epilepsy, the editorialists wrote. Such investigations could help elucidate the underlying mechanisms of these conditions and help to improve treatment, they added.

Commenting on the findings, Ilo Leppik, MD, professor of neurology and pharmacy at the University of Minnesota in Minneapolis described the research as “a very well-done study by qualified researchers in the field. … For the last century, medicine has unfortunately become compartmentalized by specialty and then subspecialty. The brain and disorders of the brain do not recognize these silos. … It is not a stretch of the known science to begin to understand that epilepsy and dementia have common anatomical and physiological underpinnings.”

The long period of prospectively gathering data and the measurement of cognitive function through various modalities are among the study’s great strengths, said Dr. Leppik. However, the study’s weakness is its reliance on Medicare claims data, which mainly would reflect convulsive seizures.

“What is missing is how many persons had subtle focal-unaware seizures that may not be identified unless a careful history is taken,” said Dr. Leppik. “Thus, this study likely underestimates the frequency of epilepsy.”

Neurologists who evaluate a person with early dementia should be on the lookout for a history of subtle seizures, said Dr. Leppik. Animal studies suggest treatment with levetiracetam or brivaracetam may slow the course of dementia, and a clinical study in participants with early dementia is underway.

“Treatment with an antiseizure drug may prove to be beneficial, especially if evidence for the presence of subtle epilepsy can be found,” Dr. Leppik added.

Greater collaboration between epileptologists and dementia specialists and larger studies of antiseizure drugs are necessary, he noted. “These studies can incorporate sophisticated structural and biochemical [analyses] to better identify the relationships between brain mechanisms that likely underlie both seizures and dementia. The ultimate promise is that early treatment of seizures may alter the course of dementia,” Dr. Leppik said.

The study by Dr. Johnson and colleagues was supported by a contract from the National Institute on Aging; ARIC from the National Heart, Lung, and Blood Institute; the National Institutes of Health; and the Department of Health & Human Services. The authors and Dr. Leppik have disclosed no relevant financial relationships.

A version of this article originally appeared on Medscape.com.