IBD & Intestinal Disorders

Key clinical point: Gut microbial composition differed among patients with diarrhea-predominant irritable bowel syndrome (IBS-D) who were positive vs negative for breath test (IBS-BT+ vs IBS-BT−), with patients who were IBS-BT+ responding better to rifaximin therapy.

Major finding: Beta-diversity differed significantly among patients with IBS-BT+, those with IBS-BT−, and non-IBS healthy controls (P = .005). The IBS Symptom Severity Scores (SSS), Gastrointestinal Symptom Rating Scale scores, and Bristol Stool Form Scale scores decreased significantly after rifaximin treatment in the IBS-BT+ group (all P < .05); however, only IBS-SSS scores decreased significantly in the IBS-BT− group (P = .001).

Study details: The data come from a clinical trial including 176 participants, of which 49 were BT− healthy controls and 127 were patients with IBS-D who were evaluated before and after rifaximin therapy.

Disclosures: This study was supported by the National Natural Science Foundation of China and the Michigan Medicine-PKUHSC Joint Institute for Translational and Clinical Research. The authors declared no conflicts of interest.

Source: Liu Z et al. Patients with breath test positive are necessary to be identified from irritable bowel syndrome: A clinical trial based on microbiomics and rifaximin sensitivity. Chin Med J (Engl). 2022;135(14):1716-1727 (Aug 25). Doi: 10.1097/CM9.0000000000002294

Key clinical point: Gut microbial composition differed among patients with diarrhea-predominant irritable bowel syndrome (IBS-D) who were positive vs negative for breath test (IBS-BT+ vs IBS-BT−), with patients who were IBS-BT+ responding better to rifaximin therapy.

Major finding: Beta-diversity differed significantly among patients with IBS-BT+, those with IBS-BT−, and non-IBS healthy controls (P = .005). The IBS Symptom Severity Scores (SSS), Gastrointestinal Symptom Rating Scale scores, and Bristol Stool Form Scale scores decreased significantly after rifaximin treatment in the IBS-BT+ group (all P < .05); however, only IBS-SSS scores decreased significantly in the IBS-BT− group (P = .001).

Study details: The data come from a clinical trial including 176 participants, of which 49 were BT− healthy controls and 127 were patients with IBS-D who were evaluated before and after rifaximin therapy.

Disclosures: This study was supported by the National Natural Science Foundation of China and the Michigan Medicine-PKUHSC Joint Institute for Translational and Clinical Research. The authors declared no conflicts of interest.

Source: Liu Z et al. Patients with breath test positive are necessary to be identified from irritable bowel syndrome: A clinical trial based on microbiomics and rifaximin sensitivity. Chin Med J (Engl). 2022;135(14):1716-1727 (Aug 25). Doi: 10.1097/CM9.0000000000002294

Key clinical point: Gut microbial composition differed among patients with diarrhea-predominant irritable bowel syndrome (IBS-D) who were positive vs negative for breath test (IBS-BT+ vs IBS-BT−), with patients who were IBS-BT+ responding better to rifaximin therapy.

Major finding: Beta-diversity differed significantly among patients with IBS-BT+, those with IBS-BT−, and non-IBS healthy controls (P = .005). The IBS Symptom Severity Scores (SSS), Gastrointestinal Symptom Rating Scale scores, and Bristol Stool Form Scale scores decreased significantly after rifaximin treatment in the IBS-BT+ group (all P < .05); however, only IBS-SSS scores decreased significantly in the IBS-BT− group (P = .001).

Study details: The data come from a clinical trial including 176 participants, of which 49 were BT− healthy controls and 127 were patients with IBS-D who were evaluated before and after rifaximin therapy.

Disclosures: This study was supported by the National Natural Science Foundation of China and the Michigan Medicine-PKUHSC Joint Institute for Translational and Clinical Research. The authors declared no conflicts of interest.

Source: Liu Z et al. Patients with breath test positive are necessary to be identified from irritable bowel syndrome: A clinical trial based on microbiomics and rifaximin sensitivity. Chin Med J (Engl). 2022;135(14):1716-1727 (Aug 25). Doi: 10.1097/CM9.0000000000002294

Key clinical point: Sex and gender are critical for a better understanding of the differences in individual experiences of irritable bowel syndrome (IBS) and should be included in discussions of the disease’s etiology, presentations, and treatment strategies.

Major finding: Men with IBS had fewer psychiatric conditions (P = .027), fewer sleeping problems (P = .011), less chronic pain (P = .043), and fewer contacts with the healthcare system (P < .001) compared with women with IBS, with urgency to defecate being less frequent (P = .017) and stool frequency being higher (P = .034) in men with IBS.

Study details: The data come from a cross-sectional study including 293 patients (64 men) with IBS and 363 non-IBS controls (62 men).

Disclosures: This study was funded by FORSS-the Research Council of Southeast, Sweden. The authors declared no conflicts of interest.

Source: Bureychak T et al. Symptoms and health experience in irritable bowel syndrome with focus on men. Neurogastroenterol Motil. 2022;34(11):e14430 (Sep 8). Doi: 10.1111/nmo.14430

Key clinical point: Sex and gender are critical for a better understanding of the differences in individual experiences of irritable bowel syndrome (IBS) and should be included in discussions of the disease’s etiology, presentations, and treatment strategies.

Major finding: Men with IBS had fewer psychiatric conditions (P = .027), fewer sleeping problems (P = .011), less chronic pain (P = .043), and fewer contacts with the healthcare system (P < .001) compared with women with IBS, with urgency to defecate being less frequent (P = .017) and stool frequency being higher (P = .034) in men with IBS.

Study details: The data come from a cross-sectional study including 293 patients (64 men) with IBS and 363 non-IBS controls (62 men).

Disclosures: This study was funded by FORSS-the Research Council of Southeast, Sweden. The authors declared no conflicts of interest.

Source: Bureychak T et al. Symptoms and health experience in irritable bowel syndrome with focus on men. Neurogastroenterol Motil. 2022;34(11):e14430 (Sep 8). Doi: 10.1111/nmo.14430

Key clinical point: Sex and gender are critical for a better understanding of the differences in individual experiences of irritable bowel syndrome (IBS) and should be included in discussions of the disease’s etiology, presentations, and treatment strategies.

Major finding: Men with IBS had fewer psychiatric conditions (P = .027), fewer sleeping problems (P = .011), less chronic pain (P = .043), and fewer contacts with the healthcare system (P < .001) compared with women with IBS, with urgency to defecate being less frequent (P = .017) and stool frequency being higher (P = .034) in men with IBS.

Study details: The data come from a cross-sectional study including 293 patients (64 men) with IBS and 363 non-IBS controls (62 men).

Disclosures: This study was funded by FORSS-the Research Council of Southeast, Sweden. The authors declared no conflicts of interest.

Source: Bureychak T et al. Symptoms and health experience in irritable bowel syndrome with focus on men. Neurogastroenterol Motil. 2022;34(11):e14430 (Sep 8). Doi: 10.1111/nmo.14430

Key clinical point: Breath gas patterns are linked to distinct gut microtypes in diarrhea-predominant irritable bowel syndrome (IBS-D) and constipation-predominant IBS (IBS-C).

Major finding: Patients with IBS-D vs IBS-C had a higher area under the curve (AUC) for hydrogen (P = .02) and hydrogen sulfide (P = .002), whereas those with IBS-C vs IBS-D had a higher AUC for methane (P = .002). Higher breath methane in IBS-C correlated with higher breath microbial diversity, whereas higher breath hydrogen and hydrogen sulfide in IBS-D correlated with lower microbial diversity and higher relative abundance of hydrogen sulfide-producing bacteria, respectively.

Study details: The data come from two randomized controlled trials including patients with IBS-C (n = 124) and IBS-D (n = 47).

Disclosures: This study was partly funded by the Monica Lester Charitable Trust; Elias, Genevieve, and Georgianna Atol Charitable Trust; and others. Some authors declared receiving research grants or serving as consultants or speakers for various sources.

Source: Villanueva-Millan MJ et al. Methanogens and hydrogen sulfide producing bacteria guide distinct gut microbe profiles and irritable bowel syndrome subtypes. Am J Gastroenterol. 2022 (Sep 6). Doi: 10.14309/ajg.0000000000001997

Key clinical point: Breath gas patterns are linked to distinct gut microtypes in diarrhea-predominant irritable bowel syndrome (IBS-D) and constipation-predominant IBS (IBS-C).

Major finding: Patients with IBS-D vs IBS-C had a higher area under the curve (AUC) for hydrogen (P = .02) and hydrogen sulfide (P = .002), whereas those with IBS-C vs IBS-D had a higher AUC for methane (P = .002). Higher breath methane in IBS-C correlated with higher breath microbial diversity, whereas higher breath hydrogen and hydrogen sulfide in IBS-D correlated with lower microbial diversity and higher relative abundance of hydrogen sulfide-producing bacteria, respectively.

Study details: The data come from two randomized controlled trials including patients with IBS-C (n = 124) and IBS-D (n = 47).

Disclosures: This study was partly funded by the Monica Lester Charitable Trust; Elias, Genevieve, and Georgianna Atol Charitable Trust; and others. Some authors declared receiving research grants or serving as consultants or speakers for various sources.

Source: Villanueva-Millan MJ et al. Methanogens and hydrogen sulfide producing bacteria guide distinct gut microbe profiles and irritable bowel syndrome subtypes. Am J Gastroenterol. 2022 (Sep 6). Doi: 10.14309/ajg.0000000000001997

Key clinical point: Breath gas patterns are linked to distinct gut microtypes in diarrhea-predominant irritable bowel syndrome (IBS-D) and constipation-predominant IBS (IBS-C).

Major finding: Patients with IBS-D vs IBS-C had a higher area under the curve (AUC) for hydrogen (P = .02) and hydrogen sulfide (P = .002), whereas those with IBS-C vs IBS-D had a higher AUC for methane (P = .002). Higher breath methane in IBS-C correlated with higher breath microbial diversity, whereas higher breath hydrogen and hydrogen sulfide in IBS-D correlated with lower microbial diversity and higher relative abundance of hydrogen sulfide-producing bacteria, respectively.

Study details: The data come from two randomized controlled trials including patients with IBS-C (n = 124) and IBS-D (n = 47).

Disclosures: This study was partly funded by the Monica Lester Charitable Trust; Elias, Genevieve, and Georgianna Atol Charitable Trust; and others. Some authors declared receiving research grants or serving as consultants or speakers for various sources.

Source: Villanueva-Millan MJ et al. Methanogens and hydrogen sulfide producing bacteria guide distinct gut microbe profiles and irritable bowel syndrome subtypes. Am J Gastroenterol. 2022 (Sep 6). Doi: 10.14309/ajg.0000000000001997

Key clinical point: Fecal microbiota transfer (FMT) did not appear to be an effective treatment for irritable bowel syndrome (IBS) symptoms whether administered orally or via colonoscopy, gastroscopy, or a nasojejunal tube, with initial improvements wearing off drastically over time.

Major finding: Despite a significant improvement in the quality-of-life score in the FMT vs control group (mean difference 9.32; P = .0005), the overall change in IBS symptom severity score (P = .67) and the number of respondents considering all routes of administration (P = .19) were not significantly different between treatment arms.

Study details: Findings are from a meta-analysis of eight randomized controlled trials including 472 patients with IBS who received either FMT or autologous transfer/placebo (control group).

Disclosures: This study did not declare any source of funding. The authors declared no conflicts of interest.

Source: Abdelghafar YA et al. Efficacy and safety of fecal microbiota transplant in irritable bowel syndrome: An update based on meta‐analysis of randomized control trials. Health Sci Rep. 2022;5(5):e814 (Sep 12). Doi: 10.1002/hsr2.814

Key clinical point: Fecal microbiota transfer (FMT) did not appear to be an effective treatment for irritable bowel syndrome (IBS) symptoms whether administered orally or via colonoscopy, gastroscopy, or a nasojejunal tube, with initial improvements wearing off drastically over time.

Major finding: Despite a significant improvement in the quality-of-life score in the FMT vs control group (mean difference 9.32; P = .0005), the overall change in IBS symptom severity score (P = .67) and the number of respondents considering all routes of administration (P = .19) were not significantly different between treatment arms.

Study details: Findings are from a meta-analysis of eight randomized controlled trials including 472 patients with IBS who received either FMT or autologous transfer/placebo (control group).

Disclosures: This study did not declare any source of funding. The authors declared no conflicts of interest.

Source: Abdelghafar YA et al. Efficacy and safety of fecal microbiota transplant in irritable bowel syndrome: An update based on meta‐analysis of randomized control trials. Health Sci Rep. 2022;5(5):e814 (Sep 12). Doi: 10.1002/hsr2.814

Key clinical point: Fecal microbiota transfer (FMT) did not appear to be an effective treatment for irritable bowel syndrome (IBS) symptoms whether administered orally or via colonoscopy, gastroscopy, or a nasojejunal tube, with initial improvements wearing off drastically over time.

Major finding: Despite a significant improvement in the quality-of-life score in the FMT vs control group (mean difference 9.32; P = .0005), the overall change in IBS symptom severity score (P = .67) and the number of respondents considering all routes of administration (P = .19) were not significantly different between treatment arms.

Study details: Findings are from a meta-analysis of eight randomized controlled trials including 472 patients with IBS who received either FMT or autologous transfer/placebo (control group).

Disclosures: This study did not declare any source of funding. The authors declared no conflicts of interest.

Source: Abdelghafar YA et al. Efficacy and safety of fecal microbiota transplant in irritable bowel syndrome: An update based on meta‐analysis of randomized control trials. Health Sci Rep. 2022;5(5):e814 (Sep 12). Doi: 10.1002/hsr2.814

Key clinical point: Disgust sensitivity may act as a potential trigger or predisposition factor for irritable bowel syndrome (IBS), particularly in women.

Major finding: Disgust sensitivity was positively correlated with IBS (correlation coefficient [r] 0.251; P = .014), with the correlation being significant in women (P = .021) but not in men (P = .505). No correlation was observed between IBS and disgust propensity (P = .911) or total disgust score (P = .115).

Study details: This study included 105 healthy participants who completed the Disgust Propensity and Sensitivity Scale-Revised, IBS-Quality of Life Measure, and Chronic Urticaria-Quality of Life Measure questionnaires.

Disclosures: This study did not receive any funding. The authors declared no conflicts of interest.

Source: Formica S et al. Relationship between sensitivity to disgust and irritable bowel syndrome: A study on healthy individuals. Clin Neuropsychiatry. 2022;19(4):230-235 (Aug). Doi: 10.36131/cnfioritieditore20220405

Key clinical point: Disgust sensitivity may act as a potential trigger or predisposition factor for irritable bowel syndrome (IBS), particularly in women.

Major finding: Disgust sensitivity was positively correlated with IBS (correlation coefficient [r] 0.251; P = .014), with the correlation being significant in women (P = .021) but not in men (P = .505). No correlation was observed between IBS and disgust propensity (P = .911) or total disgust score (P = .115).

Study details: This study included 105 healthy participants who completed the Disgust Propensity and Sensitivity Scale-Revised, IBS-Quality of Life Measure, and Chronic Urticaria-Quality of Life Measure questionnaires.

Disclosures: This study did not receive any funding. The authors declared no conflicts of interest.

Source: Formica S et al. Relationship between sensitivity to disgust and irritable bowel syndrome: A study on healthy individuals. Clin Neuropsychiatry. 2022;19(4):230-235 (Aug). Doi: 10.36131/cnfioritieditore20220405

Key clinical point: Disgust sensitivity may act as a potential trigger or predisposition factor for irritable bowel syndrome (IBS), particularly in women.

Major finding: Disgust sensitivity was positively correlated with IBS (correlation coefficient [r] 0.251; P = .014), with the correlation being significant in women (P = .021) but not in men (P = .505). No correlation was observed between IBS and disgust propensity (P = .911) or total disgust score (P = .115).

Study details: This study included 105 healthy participants who completed the Disgust Propensity and Sensitivity Scale-Revised, IBS-Quality of Life Measure, and Chronic Urticaria-Quality of Life Measure questionnaires.

Disclosures: This study did not receive any funding. The authors declared no conflicts of interest.

Source: Formica S et al. Relationship between sensitivity to disgust and irritable bowel syndrome: A study on healthy individuals. Clin Neuropsychiatry. 2022;19(4):230-235 (Aug). Doi: 10.36131/cnfioritieditore20220405

Key clinical point: Cimetropium, drotaverine, and acupuncture were more effective in improving abdominal pain than placebo in patients with irritable bowel syndrome (IBS), with acupuncture being more effective than pinaverium in relieving global IBS symptoms and causing fewer adverse events than other antispasmodics.

Major finding: Cimetropium (standardized mean difference [SMD] −3.00; 95% CI −4.47 to −1.53) was the most effective for relieving abdominal pain, with drotaverine, acupuncture, and pinaverium being superior to placebo. Acupuncture vs pinaverium more effectively relieved global IBS symptoms (SMD −1.11; 95% CI −1.94 to −0.28). The adverse event rate was lower with acupuncture vs most antispasmodics.

Study details: The data come from an adjusted indirect treatment comparison meta-analysis of 35 randomized control trials including 5190 participants.

Disclosures: This study was supported by the National Key Research and Development Program of the Ministry of Science and Technology of the People’s Republic of China and others. The authors declared no conflicts of interest.

Source: Shi YZ et al. Acupuncture vs antispasmodics in the treatment of irritable bowel syndrome: An adjusted indirect treatment comparison meta-analysis. Front Physiol. 2022; 13:1001978 (Oct 6). Doi: 10.3389/fphys.2022.1001978

Key clinical point: Cimetropium, drotaverine, and acupuncture were more effective in improving abdominal pain than placebo in patients with irritable bowel syndrome (IBS), with acupuncture being more effective than pinaverium in relieving global IBS symptoms and causing fewer adverse events than other antispasmodics.

Major finding: Cimetropium (standardized mean difference [SMD] −3.00; 95% CI −4.47 to −1.53) was the most effective for relieving abdominal pain, with drotaverine, acupuncture, and pinaverium being superior to placebo. Acupuncture vs pinaverium more effectively relieved global IBS symptoms (SMD −1.11; 95% CI −1.94 to −0.28). The adverse event rate was lower with acupuncture vs most antispasmodics.

Study details: The data come from an adjusted indirect treatment comparison meta-analysis of 35 randomized control trials including 5190 participants.

Disclosures: This study was supported by the National Key Research and Development Program of the Ministry of Science and Technology of the People’s Republic of China and others. The authors declared no conflicts of interest.

Source: Shi YZ et al. Acupuncture vs antispasmodics in the treatment of irritable bowel syndrome: An adjusted indirect treatment comparison meta-analysis. Front Physiol. 2022; 13:1001978 (Oct 6). Doi: 10.3389/fphys.2022.1001978

Key clinical point: Cimetropium, drotaverine, and acupuncture were more effective in improving abdominal pain than placebo in patients with irritable bowel syndrome (IBS), with acupuncture being more effective than pinaverium in relieving global IBS symptoms and causing fewer adverse events than other antispasmodics.

Major finding: Cimetropium (standardized mean difference [SMD] −3.00; 95% CI −4.47 to −1.53) was the most effective for relieving abdominal pain, with drotaverine, acupuncture, and pinaverium being superior to placebo. Acupuncture vs pinaverium more effectively relieved global IBS symptoms (SMD −1.11; 95% CI −1.94 to −0.28). The adverse event rate was lower with acupuncture vs most antispasmodics.

Study details: The data come from an adjusted indirect treatment comparison meta-analysis of 35 randomized control trials including 5190 participants.

Disclosures: This study was supported by the National Key Research and Development Program of the Ministry of Science and Technology of the People’s Republic of China and others. The authors declared no conflicts of interest.

Source: Shi YZ et al. Acupuncture vs antispasmodics in the treatment of irritable bowel syndrome: An adjusted indirect treatment comparison meta-analysis. Front Physiol. 2022; 13:1001978 (Oct 6). Doi: 10.3389/fphys.2022.1001978

Key clinical point: Treatment with anaerobically cultivated human intestinal microbiota (ACHIM) suspension or donor fecal microbiota transplantation (donor-FMT) but not placebo changed gut microbiota profiles in patients with irritable bowel syndrome (IBS) to those measured in healthy control individuals along with significant changes in bacterial strain signal.

Major finding: Patients receiving donor-FMT vs placebo had more significant bacterial strain signals for Actinobacteria spp. and Bifidobacteria spp., whereas those receiving ACHIM or donor-FMT vs placebo had more significant signals for Alistipes onderdonkii (all P < .05). After receiving ACHIM suspension or donor-FMT, but not placebo, the bacterial signal in patients resembled more that in healthy controls. No post-transplant complications were reported.

Study details: The data come from a randomized controlled study including 43 patients with IBS-D who received ACHIM suspension (n = 17), donor-FMT (n = 11), or placebo (patient’s own feces; n = 15).

Disclosures: This study was funded by Helse Vest, Norway. The authors declared no conflicts of interest.

Source: Mazzawi T et al. The effect of anaerobically cultivated human intestinal microbiota compared to fecal microbiota transplantation on gut microbiota profile and symptoms of irritable bowel syndrome, a double-blind placebo-controlled study. Microorganisms. 2022;10(9):1819 (Sep 11). Doi: 10.3390/microorganisms10091819

Key clinical point: Treatment with anaerobically cultivated human intestinal microbiota (ACHIM) suspension or donor fecal microbiota transplantation (donor-FMT) but not placebo changed gut microbiota profiles in patients with irritable bowel syndrome (IBS) to those measured in healthy control individuals along with significant changes in bacterial strain signal.

Major finding: Patients receiving donor-FMT vs placebo had more significant bacterial strain signals for Actinobacteria spp. and Bifidobacteria spp., whereas those receiving ACHIM or donor-FMT vs placebo had more significant signals for Alistipes onderdonkii (all P < .05). After receiving ACHIM suspension or donor-FMT, but not placebo, the bacterial signal in patients resembled more that in healthy controls. No post-transplant complications were reported.

Study details: The data come from a randomized controlled study including 43 patients with IBS-D who received ACHIM suspension (n = 17), donor-FMT (n = 11), or placebo (patient’s own feces; n = 15).

Disclosures: This study was funded by Helse Vest, Norway. The authors declared no conflicts of interest.

Source: Mazzawi T et al. The effect of anaerobically cultivated human intestinal microbiota compared to fecal microbiota transplantation on gut microbiota profile and symptoms of irritable bowel syndrome, a double-blind placebo-controlled study. Microorganisms. 2022;10(9):1819 (Sep 11). Doi: 10.3390/microorganisms10091819

Key clinical point: Treatment with anaerobically cultivated human intestinal microbiota (ACHIM) suspension or donor fecal microbiota transplantation (donor-FMT) but not placebo changed gut microbiota profiles in patients with irritable bowel syndrome (IBS) to those measured in healthy control individuals along with significant changes in bacterial strain signal.

Major finding: Patients receiving donor-FMT vs placebo had more significant bacterial strain signals for Actinobacteria spp. and Bifidobacteria spp., whereas those receiving ACHIM or donor-FMT vs placebo had more significant signals for Alistipes onderdonkii (all P < .05). After receiving ACHIM suspension or donor-FMT, but not placebo, the bacterial signal in patients resembled more that in healthy controls. No post-transplant complications were reported.

Study details: The data come from a randomized controlled study including 43 patients with IBS-D who received ACHIM suspension (n = 17), donor-FMT (n = 11), or placebo (patient’s own feces; n = 15).

Disclosures: This study was funded by Helse Vest, Norway. The authors declared no conflicts of interest.

Source: Mazzawi T et al. The effect of anaerobically cultivated human intestinal microbiota compared to fecal microbiota transplantation on gut microbiota profile and symptoms of irritable bowel syndrome, a double-blind placebo-controlled study. Microorganisms. 2022;10(9):1819 (Sep 11). Doi: 10.3390/microorganisms10091819

Key clinical point: Modest conformation exists between subjective reporting of the Bristol Stool Form Scale (BSFS) and fecal consistency measured by stool water content in irritable bowel syndrome (IBS), warranting caution when using BSFS reporting for subtyping IBS.

Major finding: BSFS scores significantly correlated with stool water content (correlation coefficient [r] 0.36, P < .0001); however, 77% of stool samples referred as BSFS 1-2 had a water content of ≤68.5% and 52.0% of samples referred as BSFS 6-7 had a water content of ≥78%. Sensitivity and specificity for BSFS 1-2 were 32% and 94%, respectively, and those for BSFS 6-7 were 37% and 93%, respectively.

Study details: The data come from a subanalysis of a previous randomized three-way crossover trial including 110 participants with severe-to-moderate IBS who underwent 1-week provocation with fermentable oligosaccharides, disaccharides, monosaccharides, and polyols; gluten; or placebo.

Disclosures: This study was funded by Formas and the Swedish Research Council. The authors declared no conflicts of interest.

Source: Nordin E et al. Modest conformity between self-reporting of Bristol stool form and fecal consistency measured by stool water content in irritable bowel syndrome, a FODMAP and gluten trial. Am J Gastroenterol. 2022;117(10):1668-1674 (Aug 12). Doi: 10.14309/ajg.0000000000001942

Key clinical point: Modest conformation exists between subjective reporting of the Bristol Stool Form Scale (BSFS) and fecal consistency measured by stool water content in irritable bowel syndrome (IBS), warranting caution when using BSFS reporting for subtyping IBS.

Major finding: BSFS scores significantly correlated with stool water content (correlation coefficient [r] 0.36, P < .0001); however, 77% of stool samples referred as BSFS 1-2 had a water content of ≤68.5% and 52.0% of samples referred as BSFS 6-7 had a water content of ≥78%. Sensitivity and specificity for BSFS 1-2 were 32% and 94%, respectively, and those for BSFS 6-7 were 37% and 93%, respectively.

Study details: The data come from a subanalysis of a previous randomized three-way crossover trial including 110 participants with severe-to-moderate IBS who underwent 1-week provocation with fermentable oligosaccharides, disaccharides, monosaccharides, and polyols; gluten; or placebo.

Disclosures: This study was funded by Formas and the Swedish Research Council. The authors declared no conflicts of interest.

Source: Nordin E et al. Modest conformity between self-reporting of Bristol stool form and fecal consistency measured by stool water content in irritable bowel syndrome, a FODMAP and gluten trial. Am J Gastroenterol. 2022;117(10):1668-1674 (Aug 12). Doi: 10.14309/ajg.0000000000001942

Key clinical point: Modest conformation exists between subjective reporting of the Bristol Stool Form Scale (BSFS) and fecal consistency measured by stool water content in irritable bowel syndrome (IBS), warranting caution when using BSFS reporting for subtyping IBS.

Major finding: BSFS scores significantly correlated with stool water content (correlation coefficient [r] 0.36, P < .0001); however, 77% of stool samples referred as BSFS 1-2 had a water content of ≤68.5% and 52.0% of samples referred as BSFS 6-7 had a water content of ≥78%. Sensitivity and specificity for BSFS 1-2 were 32% and 94%, respectively, and those for BSFS 6-7 were 37% and 93%, respectively.

Study details: The data come from a subanalysis of a previous randomized three-way crossover trial including 110 participants with severe-to-moderate IBS who underwent 1-week provocation with fermentable oligosaccharides, disaccharides, monosaccharides, and polyols; gluten; or placebo.

Disclosures: This study was funded by Formas and the Swedish Research Council. The authors declared no conflicts of interest.

Source: Nordin E et al. Modest conformity between self-reporting of Bristol stool form and fecal consistency measured by stool water content in irritable bowel syndrome, a FODMAP and gluten trial. Am J Gastroenterol. 2022;117(10):1668-1674 (Aug 12). Doi: 10.14309/ajg.0000000000001942

Key clinical point: Bowel symptoms and psychosocial features were not significantly different among patients with irritable bowel syndrome (IBS) who experienced only pain (Rome IV criteria) or discomfort (seen in Rome III but not Rome IV criteria) as the predominant abdominal symptom associated with defecation.

Major finding: Overall, 33.8% of patients who met the Rome III criteria for IBS failed to meet the Rome IV criteria. Bowel habits, coexisting extragastrointestinal pain, comorbid anxiety, depression, and IBS quality-of-life scores were not significantly different between patients with pain and those with discomfort.

Study details: This study included 367 patients who met the Rome III criteria for IBS; patients were categorized into the only pain (n = 233), only discomfort (n = 83), or pain and discomfort (n = 51) group according to the predominant abdominal symptom associated with defecation.

Disclosures: This study was supported by the Program of International S & T Cooperation, the National Natural Science Foundation of China, and others. The authors declared no conflicts of interest.

Source: Fang XC et al. Are bowel symptoms and psychosocial features different in irritable bowel syndrome patients with abdominal discomfort compared to abdominal pain? World J Gastroenterol. 2022;28(33):4861-4874 (Sep 7). Doi: 10.3748/wjg.v28.i33.4861

Key clinical point: Bowel symptoms and psychosocial features were not significantly different among patients with irritable bowel syndrome (IBS) who experienced only pain (Rome IV criteria) or discomfort (seen in Rome III but not Rome IV criteria) as the predominant abdominal symptom associated with defecation.

Major finding: Overall, 33.8% of patients who met the Rome III criteria for IBS failed to meet the Rome IV criteria. Bowel habits, coexisting extragastrointestinal pain, comorbid anxiety, depression, and IBS quality-of-life scores were not significantly different between patients with pain and those with discomfort.

Study details: This study included 367 patients who met the Rome III criteria for IBS; patients were categorized into the only pain (n = 233), only discomfort (n = 83), or pain and discomfort (n = 51) group according to the predominant abdominal symptom associated with defecation.

Disclosures: This study was supported by the Program of International S & T Cooperation, the National Natural Science Foundation of China, and others. The authors declared no conflicts of interest.

Source: Fang XC et al. Are bowel symptoms and psychosocial features different in irritable bowel syndrome patients with abdominal discomfort compared to abdominal pain? World J Gastroenterol. 2022;28(33):4861-4874 (Sep 7). Doi: 10.3748/wjg.v28.i33.4861

Key clinical point: Bowel symptoms and psychosocial features were not significantly different among patients with irritable bowel syndrome (IBS) who experienced only pain (Rome IV criteria) or discomfort (seen in Rome III but not Rome IV criteria) as the predominant abdominal symptom associated with defecation.

Major finding: Overall, 33.8% of patients who met the Rome III criteria for IBS failed to meet the Rome IV criteria. Bowel habits, coexisting extragastrointestinal pain, comorbid anxiety, depression, and IBS quality-of-life scores were not significantly different between patients with pain and those with discomfort.

Study details: This study included 367 patients who met the Rome III criteria for IBS; patients were categorized into the only pain (n = 233), only discomfort (n = 83), or pain and discomfort (n = 51) group according to the predominant abdominal symptom associated with defecation.

Disclosures: This study was supported by the Program of International S & T Cooperation, the National Natural Science Foundation of China, and others. The authors declared no conflicts of interest.

Source: Fang XC et al. Are bowel symptoms and psychosocial features different in irritable bowel syndrome patients with abdominal discomfort compared to abdominal pain? World J Gastroenterol. 2022;28(33):4861-4874 (Sep 7). Doi: 10.3748/wjg.v28.i33.4861

Key clinical point: A gluten-free diet influenced bowel habits and had significant positive effects on irritable bowel syndrome (IBS) symptom severity, abdominal pain intensity, and daily life interference.

Major finding: In patients with IBS, the IBS-severity scoring system total score (P = .02), abdominal pain intensity (P = .02), and daily life interference (P = .04) improved significantly after the gluten-free intervention but not after the gluten-containing intervention. Patients with IBS reported fewer loose stools during the gluten-free vs gluten-containing intervention (19.2% vs 27.4%; P = .01).

Study details: The data come from a randomized controlled trial (PROT-IBS) including 20 patients with IBS and 21 healthy control individuals who were challenged with gluten (14 g/day) or rice flour during two 14-day interventions, while adhering to a strict gluten-free diet.

Disclosures: This study was funded by the Swedish Research Council and other sources. Some authors declared receiving consulting fees or research grants or serving on advisory boards for various sources.

Source: Algera JP et al. Randomised controlled trial: Effects of gluten-free diet on symptoms and the gut microenvironment in irritable bowel syndrome. Aliment Pharmacol Ther. 2022;56(9):1318-1327 (Sep 29). Doi: 10.1111/apt.17239

Key clinical point: A gluten-free diet influenced bowel habits and had significant positive effects on irritable bowel syndrome (IBS) symptom severity, abdominal pain intensity, and daily life interference.

Major finding: In patients with IBS, the IBS-severity scoring system total score (P = .02), abdominal pain intensity (P = .02), and daily life interference (P = .04) improved significantly after the gluten-free intervention but not after the gluten-containing intervention. Patients with IBS reported fewer loose stools during the gluten-free vs gluten-containing intervention (19.2% vs 27.4%; P = .01).

Study details: The data come from a randomized controlled trial (PROT-IBS) including 20 patients with IBS and 21 healthy control individuals who were challenged with gluten (14 g/day) or rice flour during two 14-day interventions, while adhering to a strict gluten-free diet.

Disclosures: This study was funded by the Swedish Research Council and other sources. Some authors declared receiving consulting fees or research grants or serving on advisory boards for various sources.

Source: Algera JP et al. Randomised controlled trial: Effects of gluten-free diet on symptoms and the gut microenvironment in irritable bowel syndrome. Aliment Pharmacol Ther. 2022;56(9):1318-1327 (Sep 29). Doi: 10.1111/apt.17239

Key clinical point: A gluten-free diet influenced bowel habits and had significant positive effects on irritable bowel syndrome (IBS) symptom severity, abdominal pain intensity, and daily life interference.

Major finding: In patients with IBS, the IBS-severity scoring system total score (P = .02), abdominal pain intensity (P = .02), and daily life interference (P = .04) improved significantly after the gluten-free intervention but not after the gluten-containing intervention. Patients with IBS reported fewer loose stools during the gluten-free vs gluten-containing intervention (19.2% vs 27.4%; P = .01).

Study details: The data come from a randomized controlled trial (PROT-IBS) including 20 patients with IBS and 21 healthy control individuals who were challenged with gluten (14 g/day) or rice flour during two 14-day interventions, while adhering to a strict gluten-free diet.

Disclosures: This study was funded by the Swedish Research Council and other sources. Some authors declared receiving consulting fees or research grants or serving on advisory boards for various sources.

Source: Algera JP et al. Randomised controlled trial: Effects of gluten-free diet on symptoms and the gut microenvironment in irritable bowel syndrome. Aliment Pharmacol Ther. 2022;56(9):1318-1327 (Sep 29). Doi: 10.1111/apt.17239