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Irritable colon syndrome

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https://www.readbyqxmd.com/read/28410580/lactobacillus-casei-dg-and-its-postbiotic-reduce-the-inflammatory-mucosal-response-an-ex-vivo-organ-culture-model-of-post-infectious-irritable-bowel-syndrome
#1
Debora Compare, Alba Rocco, Pietro Coccoli, Debora Angrisani, Costantino Sgamato, Barbara Iovine, Umberto Salvatore, Gerardo Nardone
BACKGROUND: The evidence on the role of gut microbiota in post-infectious irritable bowel syndrome (PI-IBS) is convincing. Lactobacillus spp. positively affect IBS symptoms, although the mechanisms through which probiotics exert their beneficial effects are largely unknown. The aim of the study is to evaluate the role of Lactobacillus casei DG (LC-DG) and its postbiotic (PB) in modulating the inflammatory/immune-response in PI-IBS in an ex-vivo organ culture model. METHODS: Ex vivo cultures of ileal and colonic mucosa from 10 PI-IBS, diarrhea predominant subtype (D) patients, and 10 healthy controls (HC) were treated with LPS, LC-DG and PB...
April 14, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28395430/-changes-of-adherens-junctions-between-the-epithelial-cells-of-intestinal-mucosal-barrier-in-irritable-bowel-syndrome
#2
C Y Chen, M Zhang, S S Wang, B Lü, X Wang
Objective: To investigate whether there are changes in adherens junctions(AJ), including E-cadherin (E-cad) and β-catenin (β-cat), in the colonic mucosa of irritable bowel syndrome (IBS). Methods: Colorectal dilatation combined with restraint stress was used to establish IBS SD rat model. There were 8 rats in the model group and 8 rats in normal control group. From each rat, the colon tissue 5 centimeters away from ileocecum (I) and the junction of the rectum and sigmoid colon (R) were taken, in which E-cad and β-cat mRNA, protein level and structural changes were detected using real-time quantitative-PCR, Western blot, and immunofluorescence...
April 11, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28346927/microbiota-in-functional-gastrointestinal-disorders-in-infancy-implications-for-management
#3
Thomas R Abrahamsson, Richard Y Wu, Philip M Sherman
The complex and diverse intestinal microbiome is recognized as important in promoting human health. An altered gut microflora, referred to as dysbiosis, is increasingly recognized as having an etiologic role in a variety of conditions, including functional gastrointestinal disorders: colic in infants and irritable bowel syndrome in older children. Probiotics are defined as live microorganisms that, if ingested in sufficient amounts, restore microbial homeostasis and have a benefit on health. Randomized controlled trials indicate that probiotics can be effective in a variety of intestinal conditions, including colic and irritable bowel syndrome...
2017: Nestlé Nutrition Institute Workshop Series
https://www.readbyqxmd.com/read/28346031/chromogranin-a-cell-density-in-the-large-intestine-of-asian-and-european-patients-with-irritable-bowel-syndrome
#4
Magdy El-Salhy, Tanisa Patcharatrakul, Jan Gunnar Hatlebakk, Trygve Hausken, Odd Helge Gilja, Sutep Gonlachanvit
OBJECTIVE: Patients with irritable bowel syndrome (IBS) in Asia show distinctive differences from those in the western world. The gastrointestinal endocrine cells appear to play an important role in the pathophysiology of IBS. The present study aimed at studying the density of chromogranin A (CgA) cells in the large intestine of Thai and Norwegian IBS patients. METHODS: Thirty Thai IBS patients and 20 control subjects, and 47 Norwegian IBS patients and 20 control subjects were included...
June 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28344794/does-calprotectin-level-identify-a-subgroup-among-patients-suffering-from-irritable-bowel-syndrome-results-of-a-prospective-study
#5
Chloé Melchior, Moutaz Aziz, Typhaine Aubry, Guillaume Gourcerol, Muriel Quillard, Alberto Zalar, Moïse Coëffier, Pierre Dechelotte, Anne-Marie Leroi, Philippe Ducrotté
BACKGROUND: Irritable bowel syndrome is a multifactorial disease. Although faecal calprotectin has been shown to be a reliable marker of intestinal inflammation, its role in irritable bowel syndrome remains debated. OBJECTIVE: The aims of this prospective study were to select a subgroup of irritable bowel syndrome patients and to characterise those patients with high faecal calprotectin by systematic work-up. METHODS: Calprotectin levels were determined by enzyme-linked immunosorbent assay test in consecutive irritable bowel syndrome patients fulfilling Rome III criteria in whom normal colonoscopy and appropriate tests had excluded organic disease...
March 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28333903/-evaluation-of-oro-cecal-transit-time-in-patients-with-irritable-bowel-syndrome-with-cereal-products-intolerance
#6
Aleksandra Błońska, Paulina Konrad, Jan Chojnacki, Cezary Chojnacki
The main symptoms of irritable bowel syndrome (IBS) include abnormal frequency of bowel movements. On this basis, three main clinical types of the disease have been distinguished, i.e.: constipation (IBSC), diarrhea (IBS-D) and mixed-type (IBS-M) in accordance with the Rome III criteria. These disorders mainly affect the colon, but symptoms related to upper gastrointestinal tract are also often observed. AIM: The aim of the study was to assess the oro-caecal transit time in patients with irritable bowel syndrome with IgG-dependent hypersensitivity to cereal products...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28323272/constipation-predominant-irritable-bowel-syndrome-females-have-normal-colonic-barrier-and-secretory-function
#7
Stephanie A Peters, Shoko Edogawa, Wendy J Sundt, Roy B Dyer, Daniel A Dalenberg, Amelia Mazzone, Ravinder J Singh, Natalie Moses, Thomas C Smyrk, Christopher Weber, David R Linden, Wallace K MacNaughton, Jerrold R Turner, Michael Camilleri, David A Katzka, Gianrico Farrugia, Madhusudan Grover
OBJECTIVES: The objective of this study was to determine whether constipation-predominant irritable bowel syndrome (IBS-C) is associated with changes in intestinal barrier and secretory function. METHODS: A total of 19 IBS-C patients and 18 healthy volunteers (all females) underwent saccharide excretion assay (0.1 g (13)C mannitol and 1 g lactulose), measurements of duodenal and colonic mucosal barrier (transmucosal resistance (TMR), macromolecular and Escherichia coli Bio-Particle translocation), mucosal secretion (basal and acetylcholine (Ach)-evoked short-circuit current (Isc)), in vivo duodenal mucosal impedance, circulating endotoxins, and colonic tight junction gene expression...
March 21, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28320888/mutual-reinforcement-of-pathophysiological-host-microbe-interactions-in-intestinal-stasis-models
#8
Ketrija Touw, Daina L Ringus, Nathaniel Hubert, Yunwei Wang, Vanessa A Leone, Anuradha Nadimpalli, Betty R Theriault, Yong E Huang, Johnathan D Tune, Paul B Herring, Gianrico Farrugia, Purna C Kashyap, Dionysios A Antonopoulos, Eugene B Chang
Chronic diseases arise when there is mutual reinforcement of pathophysiological processes that cause an aberrant steady state. Such a sequence of events may underlie chronic constipation, which has been associated with dysbiosis of the gut. In this study we hypothesized that assemblage of microbial communities, directed by slow gastrointestinal transit, affects host function in a way that reinforces constipation and further maintains selection on microbial communities. In our study, we used two models - an opioid-induced constipation model in mice, and a humanized mouse model where germ-free mice were colonized with stool from a patient with constipation-predominant irritable bowel syndrome (IBS-C) in humans...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28316762/mesalazine-has-no-effect-on-mucosal-immune-biomarkers-in-patients-with-diarrhea-dominant-irritable-bowel-syndrome-referred-to-shariati-hospital-a-randomized-double-blind-placebo-controlled-trial
#9
Mohammad Reza Ghadir, Mehri Poradineh, Masoud Sotodeh, Reza Ansari, Shadi Kolahdoozan, Ahmad Hormati, Mohammad Hosein Yousefi, Samaneh Mirzaei, Homayoon Vahedi
BACKGROUND Intestinal mast cells may cause gastrointestinal symptoms in patients with diarrhea-dominant irritable bowel syndrome (IBS). The objective of this study was to determine the effect of mesalazine on the number of lamina propria mast cells and clinical manifestations of patients with diarrhea-dominant IBS referred to Shariati Hospital affiliated to Tehran University of Medical Sciences. METHODS This was a randomized placebo-controlled double-blind trial conducted on 49 patients with diarrhea-dominant IBS...
January 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28300773/the-low-fodmap-diet-many-question-marks-for-a-catchy-acronym
#10
REVIEW
Giulia Catassi, Elena Lionetti, Simona Gatti, Carlo Catassi
FODMAP, "Fermentable Oligo-, Di- and Mono-saccharides And Polyols", is a heterogeneous group of highly fermentable but poorly absorbed short-chain carbohydrates and polyols. Dietary FODMAPs might exacerbate intestinal symptoms by increasing small intestinal water volume, colonic gas production, and intestinal motility. In recent years the low-FODMAP diet for treatment of irritable bowel syndrome (IBS) has gained increasing popularity. In the present review we aim to summarize the physiological, clinical, and nutritional issues, suggesting caution in the prolonged use of this dietary treatment on the basis of the existing literature...
March 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28300333/psychological-stress-induced-colonic-barrier-dysfunction-role-of-immune-mediated-mechanisms
#11
P Hattay, D K Prusator, L Tran, B Greenwood-Van Meerveld
BACKGROUND: Evidence suggests that patients with irritable bowel syndrome (IBS) exhibit increases in gut permeability and alterations in tight junction (TJ) protein expression. Although psychological stress worsens IBS symptoms, the mechanisms by which stress enhances gut permeability and affects TJ protein expression remain to be determined. Here, we test the hypothesis that chronic intermittent psychological stress activates the release of proinflammatory cytokines to alter TJ proteins and promotes increased gut permeability...
March 16, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28275433/-tidjanibacter-massiliensis-gen-nov-sp-nov-a-new-bacterial-species-isolated-from-human-colon
#12
M Mailhe, D Ricaboni, A Benezech, J-C Lagier, P-E Fournier, D Raoult
We report the summary of main characteristics of Tidjanibacter massiliensis strain Marseille-P3084(T), a new bacterial species isolated from the liquid sample of the colon of a patient with a history of irritable bowel syndrome.
May 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28275113/potential-mechanisms-of-effects-of-serum-derived-bovine-immunoglobulin-protein-isolate-therapy-in-patients-with-diarrhea-predominant-irritable-bowel-syndrome
#13
Nelson Valentin, Michael Camilleri, Paula Carlson, Sean C Harrington, Deborah Eckert, Jessica O'Neill, Duane Burton, Jun Chen, Audrey L Shaw, Andres Acosta
Serum-derived bovine immunoglobulin/protein isolate (SBI), an oral nutritional therapy, is efficacious in diverse diarrheal diseases. In an open-label study in 15 patients with irritable bowel syndrome-diarrhea (IBS-D), we evaluated effects of SBI (5.0 g, twice a day) for 8 weeks on safety, on bowel function and abdominal pain, tryptophan metabolism (K:T ratio), intestinal permeability ((13)C-mannitol and lactulose excretion), bile acid synthesis (fasting serum FGF-19 and C4), duodenal and stool microbiome, and the expression of 90 genes related to inflammation, immune function, and tight junctions in duodenal mucosa...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28263849/chemical-profiles-and-pharmacological-activities-of-chang-kang-fang-a-multi-herb-chinese-medicinal-formula-for-treating-irritable-bowel-syndrome
#14
Qian Mao, Lei Shi, Zhi-Gang Wang, Yu-Hui Luo, Yin-Yu Wang, Xue Li, Min Lu, Jian-Min Ju, Jin-Di Xu, Ming Kong, Shan-Shan Zhou, Min-Qin Shen, Song-Lin Li
ETHNOPHARMACOLOGICAL RELEVANCE: Chang-Kang-Fang formula (CKF), a multi-herb traditional Chinese medicinal formula, has been clinically used for treatment of irritable bowel syndrome (IBS). The mechanisms of CKF for treating IBS and the components that are responsible for the activities were still unknown. AIM OF THE STUDY: To investigate the chemical profiles and effects of CKF on IBS model. MATERIALS AND METHODS: The chemical profiles of CKF were investigated by ultra performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-Q/TOF-MS/MS)...
March 2, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28257307/small-intestinal-bacterial-overgrowth-as-a-cause-for-irritable-bowel-syndrome-guilty-or-not-guilty
#15
Imran Aziz, Hans Törnblom, Magnus Simrén
PURPOSE OF REVIEW: Small intestinal bacterial overgrowth (SIBO) has been proposed as a cause of irritable bowel syndrome (IBS). However, this relationship has been subject to controversy. This review aims to provide a current perspective on the SIBO-IBS hypothesis. RECENT FINDINGS: Case-control studies evaluating the prevalence of SIBO in IBS and healthy individuals have shown conflicting results. Moreover, the tests available in routine clinical practice to diagnose SIBO are not valid and lack both sensitivity and specificity...
May 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28256083/editorial-metabolic-adaptation-of-colonic-microbiota-to-galactooligosaccharides-good-news-for-prebiotics-in-irritable-bowel-syndrome
#16
EDITORIAL
H M Staudacher, S R Cox
No abstract text is available yet for this article.
April 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28251905/transplantation-of-fecal-microbiota-from-patients-with-irritable-bowel-syndrome-alters-gut-function-and-behavior-in-recipient-mice
#17
Giada De Palma, Michael D J Lynch, Jun Lu, Vi T Dang, Yikang Deng, Jennifer Jury, Genevieve Umeh, Pedro M Miranda, Marc Pigrau Pastor, Sacha Sidani, Maria Ines Pinto-Sanchez, Vivek Philip, Peter G McLean, Moreno-Gabriel Hagelsieb, Michael G Surette, Gabriela E Bergonzelli, Elena F Verdu, Philip Britz-McKibbin, Josh D Neufeld, Stephen M Collins, Premysl Bercik
Irritable bowel syndrome (IBS) is a common disorder characterized by altered gut function and often is accompanied by comorbid anxiety. Although changes in the gut microbiota have been documented, their relevance to the clinical expression of IBS is unknown. To evaluate a functional role for commensal gut bacteria in IBS, we colonized germ-free mice with the fecal microbiota from healthy control individuals or IBS patients with diarrhea (IBS-D), with or without anxiety, and monitored gut function and behavior in the transplanted mice...
March 1, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28246611/increased-expression-of-toll-like-receptors-4-5-and-9-in-small-bowel-mucosa-from-patients-with-irritable-bowel-syndrome
#18
Aldona Dlugosz, Katherina Zakikhany, Nathalie Acevedo, Mauro D'Amato, Greger Lindberg
The aim of our study was to compare patients with irritable bowel syndrome (IBS) and healthy controls regarding the expression of toll-like receptors 2, 4, 5, and 9 (TLR2, TLR4, TLR5, and TLR9), the primary mucosal receptors of bacterial components, in small and large bowel mucosa. Methods. We analysed biopsies from jejunum and sigmoid colon of 22 patients (17 females) with IBS aged 18-66 (median: 39) years and 14 healthy volunteers (12 females) aged 22-61 (median: 42) years. Eight patients had constipation-predominant IBS (C-IBS), 7 had diarrhoea-predominant IBS (D-IBS), and 7 had IBS without predominance of constipation or diarrhoea...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28246548/efficacy-of-otilonium-bromide-in-irritable-bowel-syndrome-a-pooled-analysis
#19
Pere Clavé, Jan Tack
BACKGROUND: Otilonium bromide (OB) is a spasmolytic agent acting as an L-type calcium channel antagonist in intestinal and colonic smooth muscle cells (SMCs). We analyzed three independent clinical trials with homogeneous design on patients with irritable bowel syndrome (IBS). After 2 weeks receiving placebo, patients were randomized to receive OB (3 × 40 mg daily) or placebo for 15 weeks. We aimed to perform a pooled analysis of the data from these homogeneous clinical trials to evaluate the efficacy of OB treatment on symptoms and global response of patients...
March 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28240194/brain-and-gut-crf-signaling-biological-actions-and-role-in-the-gastrointestinal-tract
#20
Yvette Taché, Mulugeta Million, Muriel Larauche, Pu-Qing Yuan
Corticotropin-releasing factor (CRF) signaling pathways coordinate the behavioral, endocrine, autonomic and visceral responses to stress. Convergent anatomical, molecular, pharmacological and functional experimental evidence supports an important role of brain CRF receptor signaling in stress-related alterations of gastrointestinal functions. These include the inhibition of gastric acid secretion and gastro-small intestinal transit, the stimulation of colonic enteric nervous system and secretory-motor function, enhanced intestinal permeability, and visceral hypersensitivity...
February 23, 2017: Current Molecular Pharmacology
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