680 Associations of Abdominal Pain and Visceral Hypersensitivity With Intestinal Microbiota in Patients With Irritable Bowel Syndrome

2015 ◽  
Vol 148 (4) ◽  
pp. S-131-S-132
Author(s):  
Yehuda Ringel ◽  
Jarkko Salojarvi ◽  
Tamar Ringel-Kulka ◽  
Ian M. Carroll ◽  
Willem M. de Vos
Keyword(s):  
Irritable Bowel Syndrome ◽  
Abdominal Pain ◽  
Intestinal Microbiota ◽  
Visceral Hypersensitivity ◽  
Irritable Bowel

Prebiotics and probiotics in irritable bowel syndrome and inflammatory bowel disease in children

2015 ◽  
Vol 6 (2) ◽  
pp. 209-217 ◽  
Author(s):  
S. Guandalini ◽  
E. Cernat ◽  
D. Moscoso
Keyword(s):  
Inflammatory Bowel Disease ◽  
Clinical Trials ◽  
Irritable Bowel Syndrome ◽  
Abdominal Pain ◽  
Intestinal Microbiota ◽  
Functional Gastrointestinal Disorders ◽  
Gastrointestinal Disorders ◽  
Controlled Trials ◽  
Inflammatory Bowel ◽  
Irritable Bowel

Underlying pathophysiological mechanisms of irritable bowel syndrome (IBS), a common disorder characterized by abdominal pain associated to a change in stool consistency or frequency, include low-grade inflammation and intestinal microbiota changes. Few and disappointing data are available for prebiotics. A few controlled trials (RCTs) of probiotics are instead available with favourable effects, although most are limited by suboptimal design and small sample size. A recent report from the Rome foundation group included 32 RCTs of probiotics, most of which showed an overall modest improvement in symptoms, with the patients most benefitting from probiotics being those with predominant diarrhoea and those having a post-infectious IBS. A review focusing only on children with functional gastrointestinal disorders concluded that probiotics are more effective than placebo in the treatment of patients with abdominal pain-related functional gastrointestinal disorders, although no effect on constipation was evident. The role for probiotics in inflammatory bowel disease (IBD) appears logical: the endogenous intestinal microbiota plays a central role in their development, and various probiotics have been found effective in animal models of IBD. However, research in humans has been overall quite limited, and it would seem that after a phase of intense research in the first decade of this century, the pace has slowed down, with fewer clinical trials been published in the past 2-3 years. To summarize current evidence: no probiotic has proven successful in Crohn's disease. In ulcerative colitis, on the other hand, data are more promising, and a very recent meta-analysis, that included 23 randomized controlled trials, concluded that there is evidence of efficacy for the probiotic mixture VSL#3 in helping inducing and maintaining remission, as well as in maintaining remission in patients with pouchitis. It is fair to state that for both IBD and IBS, more well-designed, rigorous, randomized clinical trials must be performed.

Intestinal microbiota fingerprint in subjects with Irritable Bowel Syndrome responders to a low FODMAP diet

2021 ◽  
Author(s):  
Fernanda Valdez-Palomares ◽  
Rafael Nambo-Venegas ◽  
Jacqueline Uribe-García ◽  
Alfredo Mendoza-Vargas ◽  
Omar Granados-Portillo ◽  
...  
Keyword(s):  
Irritable Bowel Syndrome ◽  
Abdominal Pain ◽  
Intestinal Microbiota ◽  
Gastrointestinal Disorder ◽  
Functional Gastrointestinal Disorder ◽  
Bowel Habit ◽  
Altered Bowel Habit ◽  
Irritable Bowel ◽  
Fodmap Diet

Irritable Bowel Syndrome (IBS) is a functional gastrointestinal disorder characterized by abdominal pain and altered bowel habit. IBS patients report that FODMAP (Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols) diet induce...

scholarly journals Age-Related Decrease in Abdominal Pain and Associated Structural- and Functional Mechanisms: An Exploratory Study in Healthy Individuals and Irritable Bowel Syndrome Patients

2021 ◽  
Vol 12 ◽  
Author(s):  
Abraham B. Beckers ◽  
Ellen Wilms ◽  
Zlatan Mujagic ◽  
Béla Kajtár ◽  
Kata Csekő ◽  
...  
Keyword(s):  
Young Adults ◽  
Irritable Bowel Syndrome ◽  
Abdominal Pain ◽  
Visceral Hypersensitivity ◽  
Healthy Individuals ◽  
Intestinal Health ◽  
Healthy Elderly ◽  
Age Related ◽  
Underlying Mechanisms ◽  
Irritable Bowel

Introduction: The world population is ageing, resulting in increased prevalence of age-related comorbidities and healthcare costs. Limited data are available on intestinal health in elderly populations. Structural and functional changes, including altered visceroperception, may lead to altered bowel habits and abdominal symptoms in healthy individuals and irritable bowel syndrome (IBS) patients. Our aim was to explore age-related changes in gastrointestinal symptoms and underlying mechanisms.Methods: In total, 780 subjects (IBS patients n = 463, healthy subjects n = 317) from two separate studies were included. Subjects were divided into different age groups ranging from young adult to elderly. Demographics and gastrointestinal symptom scores were collected from all participants using validated questionnaires. A subset of 233 IBS patients and 103 controls underwent a rectal barostat procedure to assess visceral hypersensitivity. Sigmoid biopsies were obtained from 10 healthy young adults and 10 healthy elderly. Expression of the visceral pain-associated receptors transient receptor potential (TRP) Ankyrin 1 (TRPA1) and Vanilloid 1 (TRPV1) genes were investigated by quantitative RT-PCR and immunofluorescence.Results: Both elderly IBS and healthy individuals showed significantly lower scores for abdominal pain (p < 0.001) and indigestion (p < 0.05) as compared to respective young adults. Visceral hypersensitivity was less common in elderly than young IBS patients (p < 0.001). Relative TRPA1 gene transcription, as well as TRPA1 and TRPV1 immunoreactivity were significantly lower in healthy elderly versus healthy young adults (p < 0.05).Conclusions: Our findings show an age-related decrease in abdominal pain perception. This may in part be related to decreased TRPA1 and/or TRPV1 receptor expression. Further studies are needed to reveal precise underlying mechanisms and the associations with intestinal health.

scholarly journals 5-oxoETE triggers nociception in constipation-predominant irritable bowel syndrome through MAS-related G protein–coupled receptor D

2018 ◽  
Vol 11 (561) ◽  
pp. eaal2171 ◽  
Author(s):  
Tereza Bautzova ◽  
James R. F. Hockley ◽  
Teresa Perez-Berezo ◽  
Julien Pujo ◽  
Michael M. Tranter ◽  
...  
Keyword(s):  
Irritable Bowel Syndrome ◽  
Abdominal Pain ◽  
G Protein ◽  
Visceral Hypersensitivity ◽  
Mechanical Stimuli ◽  
Drg Neurons ◽  
G Protein Coupled Receptor ◽  
Irritable Bowel ◽  
Nerve Recordings ◽  
G Protein Coupled

Irritable bowel syndrome (IBS) is a common gastrointestinal disorder that is characterized by chronic abdominal pain concurrent with altered bowel habit. Polyunsaturated fatty acid (PUFA) metabolites are increased in abundance in IBS and are implicated in the alteration of sensation to mechanical stimuli, which is defined as visceral hypersensitivity. We sought to quantify PUFA metabolites in patients with IBS and evaluate their role in pain. Quantification of PUFA metabolites by mass spectrometry in colonic biopsies showed an increased abundance of 5-oxoeicosatetraenoic acid (5-oxoETE) only in biopsies taken from patients with IBS with predominant constipation (IBS-C). Local administration of 5-oxoETE to mice induced somatic and visceral hypersensitivity to mechanical stimuli without causing tissue inflammation. We found that 5-oxoETE directly acted on both human and mouse sensory neurons as shown by lumbar splanchnic nerve recordings and Ca2+imaging of dorsal root ganglion (DRG) neurons. We showed that 5-oxoETE selectively stimulated nonpeptidergic, isolectin B4 (IB4)–positive DRG neurons through a phospholipase C (PLC)– and pertussis toxin–dependent mechanism, suggesting that the effect was mediated by a G protein–coupled receptor (GPCR). The MAS-related GPCR D (Mrgprd) was found in mouse colonic DRG afferents and was identified as being implicated in the noxious effects of 5-oxoETE. Together, these data suggest that 5-oxoETE, a potential biomarker of IBS-C, induces somatic and visceral hyperalgesia without inflammation in an Mrgprd-dependent manner. Thus, 5-oxoETE may play a pivotal role in the abdominal pain associated with IBS-C.

scholarly journals PATOGENESIS DAN DIAGNOSIS SINDROM KOLON IRITABEL

2012 ◽  
Vol 4 (3) ◽  
Author(s):  
Edwin Jim
Keyword(s):  
Irritable Bowel Syndrome ◽  
Abdominal Pain ◽  
Visceral Hypersensitivity ◽  
Enteric Infection ◽  
Functional Bowel Disorder ◽  
Bowel Habits ◽  
Infection Diagnosis ◽  
Rome Iii ◽  
Irritable Bowel ◽  
Bowel Disorder

Abstract: Irritable bowel syndrome (IBS) is a chronic functional bowel disorder characterized by abdominal pain or discomfort and alterations in bowel habits. Many factors play some important roles in the development of the IBS including abnormal motility, visceral hypersensitivity, and enteric infection. Diagnosis of IBS is based on Rome III criteria.Keywords: irritable bowel syndrome, pathogenesis, diagnosisAbstrak: Sindrom kolon iritabel (SKI) adalah penyakit gastrointestinal fungsional kronik yang ditandai oleh nyeri perut atau rasa tidak enak di perut dan gangguan kebiasaan defekasi. Banyak faktor yang menyebabkan terjadinya SKI antara lain gangguan motilitas, hipersensitivitas viseral, dan pasca infeksi usus. Saat ini kriteria diagnosis yang digunakan untuk SKI ialah kriteria Roma III.Kata kunci: sindrom kolon iritabel, patogenesis, diagnosis

scholarly journals Altered Intestinal Microbiota with Increased Abundance of Prevotella Is Associated with High Risk of Diarrhea-Predominant Irritable Bowel Syndrome

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Tingting Su ◽  
Rongbei Liu ◽  
Allen Lee ◽  
Yanqin Long ◽  
Lijun Du ◽  
...  
Keyword(s):  
Irritable Bowel Syndrome ◽  
High Risk ◽  
Gut Microbiota ◽  
Intestinal Microbiota ◽  
Visceral Hypersensitivity ◽  
Etiologic Factor ◽  
Healthy Controls ◽  
Microbial Composition ◽  
Fecal Samples ◽  
Irritable Bowel

Alterations in gut microbiota are postulated to be an etiologic factor in the pathogenesis of irritable bowel syndrome (IBS). To determine whether IBS patients in China exhibited differences in their gut microbial composition, fecal samples were collected from diarrhea-predominant IBS (IBS-D) and healthy controls and evaluated by 16S ribosomal RNA gene sequence and quantitative real-time PCR. A mouse model of postinfectious IBS (PI-IBS) was established to determine whether the altered gut microbiota was associated with increased visceral hypersensitivity. The results indicated that there were significant differences in the bacterial community profiles between IBS-D patients and healthy controls. Prevotella was more abundant in fecal samples from IBS-D patients compared with healthy controls (p<0.05). Meanwhile, there were significant reductions in the quantity of Bacteroides, Bifidobacteria, and Lactobacillus in IBS-D patients compared with healthy controls (p<0.05). Animal models similarly showed an increased abundance of Prevotella in fecal samples compared with control mice (p<0.05). Finally, after the PI-IBS mice were cohoused with control mice, both the relative abundance of Prevotella and visceral hypersensitivity of PI-IBS mice were decreased. In conclusion, the altered intestinal microbiota is associated with increased visceral hypersensitivity and enterotype enriched with Prevotella may be positively associated with high risk of IBS-D.

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