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https://www.readbyqxmd.com/read/29107672/lovastatin-inhibits-visceral-allodynia-and-increased-colonic-permeability-induced-by-lipopolysaccharide-or-repeated-water-avoidance-stress-in-rats
#1
Tsukasa Nozu, Saori Miyagishi, Shima Kumei, Rintaro Nozu, Kaoru Takakusaki, Toshikatsu Okumura
Statins have been reported to block inflammatory somatic pain and have an anti-cytokine property. Lipopolysaccharide (LPS) or repeated water avoidance stress (WAS) induces visceral hypersensitivity and increases gut permeability in rats, which are mediated through proinflammatory cytokine-dependent pathways. Since visceral hypersensitivity with increased gut permeability plays a crucial role in the pathophysiology of irritable bowel syndrome (IBS), these above animal models are considered to simulate IBS. We hypothesized that lovastatin improves symptoms in the patients with IBS by attenuating these visceral changes...
October 28, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29106029/development-content-validity-and-cross-cultural-adaptation-of-a-patient-reported-outcome-measure-for-real-time-symptom-assessment-in-irritable-bowel-syndrome
#2
L Vork, D Keszthelyi, Z Mujagic, J W Kruimel, C Leue, I Pontén, H Törnblom, M Simrén, A Albu-Soda, Q Aziz, M Corsetti, L Holvoet, J Tack, S S Rao, J van Os, E G Quetglas, D A Drossman, A A M Masclee
BACKGROUND: End-of-day questionnaires, which are considered the gold standard for assessing abdominal pain and other gastrointestinal (GI) symptoms in irritable bowel syndrome (IBS), are influenced by recall and ecological bias. The experience sampling method (ESM) is characterized by random and repeated assessments in the natural state and environment of a subject, and herewith overcomes these limitations. This report describes the development of a patient-reported outcome measure (PROM) based on the ESM principle, taking into account content validity and cross-cultural adaptation...
November 6, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29100844/stool-as-a-treatment-for-ibs-more-questions-than-answers
#3
Alexander C Ford
No abstract text is available yet for this article.
October 31, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29094792/dietary-therapies-for-functional-bowel-symptoms-recent-advances-challenges-and-future-directions
#4
REVIEW
C J Tuck, S J Vanner
BACKGROUND: Functional gastrointestinal symptoms in irritable bowel syndrome (IBS) and quiescent inflammatory bowel disease (IBD) cause significant morbidity and a reduction in quality of life. Multiple dietary therapies are now available to treat these symptoms, but supporting evidence for many is limited. In addition to a further need for studies demonstrating efficacy and mechanism of action of dietary therapies, the risk of nutritional inadequacy, alterations to the microbiome and changes in quality of life are key concerns requiring elucidation...
November 2, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29089619/mir-16-and-mir-103-impact-5-ht4-receptor-signalling-and-correlate-with-symptom-profile-in-irritable-bowel-syndrome
#5
Carolin Wohlfarth, Stefanie Schmitteckert, Janina D Härtle, Lesley A Houghton, Harsh Dweep, Marina Fortea, Ghazaleh Assadi, Alexander Braun, Tanja Mederer, Sarina Pöhner, Philip P Becker, Christine Fischer, Martin Granzow, Hubert Mönnikes, Emeran A Mayer, Gregory Sayuk, Guy Boeckxstaens, Mira M Wouters, Magnus Simrén, Greger Lindberg, Bodil Ohlsson, Peter Thelin Schmidt, Aldona Dlugosz, Lars Agreus, Anna Andreasson, Mauro D'Amato, Barbara Burwinkel, Justo Lorenzo Bermejo, Ralph Röth, Felix Lasitschka, Maria Vicario, Marco Metzger, Javier Santos, Gudrun A Rappold, Cristina Martinez, Beate Niesler
Irritable bowel syndrome (IBS) is a gut-brain disorder involving alterations in intestinal sensitivity and motility. Serotonin 5-HT4 receptors are promising candidates in IBS pathophysiology since they regulate gut motor function and stool consistency, and targeted 5-HT4R selective drug intervention has been proven beneficial in subgroups of patients. We identified a single nucleotide polymorphism (SNP) (rs201253747) c.*61 T > C within the 5-HT4 receptor gene HTR4 to be predominantly present in diarrhoea-IBS patients (IBS-D)...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29080709/internet-based-monitoring-in-the-severe-asthma-research-program-identifies-a-subgroup-of-patients-with-labile-asthma-control
#6
Kelly Wong-McGrath, Loren C Denlinger, Eugene R Bleecker, Mario Castro, Ben Gaston, Elliot Israel, Nizar N Jarjour, David T Mauger, Stephen Peters, Brenda R Phillips, Sally E Wenzel, John V Fahy, Michael C Peters
BACKGROUND: We designed an Internet-Based Monitoring Systems (IBS) survey to facilitate monitoring of asthma symptoms and asthma exacerbations in the Severe Asthma Research Program (SARP). Our objective was to evaluate compliance with the IBS survey tool and to explore how data from an IBS tool can inform understanding of asthma phenotypes. METHODS: We invited adult subjects in the SARP III cohort (N = 528) to complete a monthly IBS asthma control survey. We compared the characteristics of subjects who did and those who did not participate in the IBS survey tool...
October 26, 2017: Chest
https://www.readbyqxmd.com/read/29077050/pharmacotherapy-for-irritable-bowel-syndrome
#7
REVIEW
Michael Camilleri, Alexander C Ford
Irritable bowel syndrome (IBS) is a disorder of the brain-gut axis; the pathophysiological mechanisms include altered colonic motility, bile acid metabolism, neurohormonal regulation, immune dysfunction, alterations in the epithelial barrier and secretory properties of the gut. This article reviews the mechanisms, efficacy, and safety of current pharmacotherapy, and medications that are in phase III trials for the treatment of IBS. There remains a significant unmet need for effective treatments-particularly for the pain component of IBS-although the introduction of drugs directed at secretion, motility and a non-absorbable antibiotic provide options for the bowel dysfunction in IBS...
October 27, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29051514/evidence-for-long-term-sensitization-of-the-bowel-in-patients-with-post-infectious-ibs
#8
D Balemans, S U Mondelaers, V Cibert-Goton, N Stakenborg, J Aguilera-Lizarraga, J Dooley, A Liston, D C Bulmer, P Vanden Berghe, G E Boeckxstaens, M M Wouters
Post-infectious irritable bowel syndrome (PI-IBS) is a common gastrointestinal disorder characterized by persistent abdominal pain despite recovery from acute gastroenteritis. The underlying mechanisms are unclear, although long-term changes in neuronal function, and low grade inflammation of the bowel have been hypothesized. We investigated the presence and mechanism of neuronal sensitization in a unique cohort of individuals who developed PI-IBS following exposure to contaminated drinking water 7 years ago...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29027719/glioplasticity-in-irritable-bowel-syndrome
#9
N L Lilli, L Quénéhervé, S Haddara, C Brochard, P Aubert, M Rolli-Derkinderen, T Durand, P Naveilhan, J-B Hardouin, R De Giorgio, G Barbara, S Bruley des Varannes, E Coron, M Neunlist
BACKGROUND: Growing evidence indicates a wide array of cellular remodeling in the mucosal microenvironment during irritable bowel syndrome (IBS), which possibly contributes to pathophysiology and symptom generation. Here, we investigated whether enteric glial cells (EGC) may be altered, and which factors/mechanisms lead to these changes. METHODS: Colonic mucosal biopsies of IBS patients (13 IBS-Constipation [IBS-C]; 10 IBS-Diarrhea [IBS-D]; 11 IBS-Mixed [IBS-M]) and 24 healthy controls (HC) were analyzed...
October 13, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28993261/volatile-organic-compounds-in-feces-associate-with-response-to-dietary-intervention-in-patients-with-irritable-bowel-syndrome
#10
Megan Rossi, Raphael Aggio, Heidi M Staudacher, Miranda C Lomer, James O Lindsay, Peter Irving, Chris Probert, Kevin Whelan
BACKGROUND & AIMS: Dietary interventions are effective in management of patients with irritable bowel syndrome (IBS), although responses vary. We investigated whether fecal levels of volatile organic compounds (VOCs) associate with response to dietary interventions in patients with IBS. METHODS: Adults who fulfilled the Rome III criteria for IBS were recruited to a 2x2 factorial randomized controlled trial. Patients were randomly assigned to a group counselled to follow a diet low in fructans, galacto-oligosaccharides, lactose, fructose, and polyols (low-FODMAP diet, n=46) or a group that received placebo dietary advice (sham diet, n=47) for 4 weeks...
October 6, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28992677/nationwide-multicenter-study-for-overlaps-of-common-functional-gastrointestinal-disorders-in-korean-patients-with-constipation
#11
Kyung Sik Park, Sam Ryong Jee, Bong Eun Lee, Kyoung Sup Hong, Jeong Eun Shin, Soo-Young Na, Joong Goo Kwon, Suck Chei Choi, Yong Sung Kim, Hyun Seok Lee, Tae Hee Lee, Kyeong Ok Kim, Jongkyoung Choi, Hee Seok Moon, Yeon Soo Kim, Moo In Park, Soo Jung Park, Seon-Young Park, Sung Noh Hong
Background/Aims: In spite of increased concerns about the overlaps among the various functional gastrointestinal disorders (FGIDs), studies for the overlap between constipation and other common FGIDs are rare. Therefore, we investigated the patterns of overlaps between constipation and other common FGIDs. Methods: This study was designed as a prospective nationwide multi-center questionnaire study using Rome III questionnaires for functional dyspepsia (FD), irritable bowel syndrome (IBS), and functional constipation (FC), as well as various questionnaires about patients' information, degree of symptoms, and quality of life...
October 30, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28989282/spotlight-on-eluxadoline-for-the-treatment-of-patients-with-irritable-bowel-syndrome-with-diarrhea
#12
REVIEW
Konstantinos C Fragkos
BACKGROUND: Irritable bowel syndrome with diarrhea (IBS-D) has limited options for treatment currently, including mainly anti-motility medications, antispasmodics, and antidepressants. This review discusses the properties of a new drug, eluxadoline, a gut-targeting mu- and kappa-opioid receptor agonist and a delta-opioid receptor antagonist, and its efficacy and safety in patients with IBS-D. MATERIALS AND METHODS: A systematic review of the literature was undertaken to identify studies that had investigated eluxadoline as a treatment in IBS-D...
2017: Clinical and Experimental Gastroenterology
https://www.readbyqxmd.com/read/28989013/development-of-a-modified-release-formulation-of-lovastatin-targeted-to-intestinal-methanogens-implicated-in-irritable-bowel-syndrome-with-constipation
#13
Steven Hubert, Alan Chadwick, Vince Wacher, Olivia Coughlin, John Kokai-Kun, Andrew Bristol
There is growing evidence that methane production, predominantly by Methanobrevibacter smithii, in the intestines is a cause of constipation, pain, and bloating in irritable bowel syndrome with constipation (IBS-C). M smithii resides primarily in the large intestine but can also colonize the small intestine. In vitro studies found that the prodrug lactone form of lovastatin, found in cholesterol-lowering drugs, inhibited methane production in stool samples from patients with IBS-C. However, the cholesterol-lowering lovastatin β-hydroxyacid was ineffective at inhibiting methane production in this system...
October 6, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28985313/general-practitioners-perceptions-of-irritable-bowel-syndrome-a-q-methodological-study
#14
Stephen Bradley, Sarah Alderson, Alexander C Ford, Robbie Foy
Background: Irritable bowel syndrome (IBS) is a common disorder that imposes a significant burden upon societies, health care and quality of life, worldwide. While a diverse range of patient viewpoints on IBS have been explored, the opinions of the GPs they ideally need to develop therapeutic partnerships with are less well defined. Objective: To explore how GPs perceive IBS, using Q-methodology, which allows quantitative interpretation of qualitative data. Design and Setting: A Q-methodological study of GPs in Leeds, UK...
July 14, 2017: Family Practice
https://www.readbyqxmd.com/read/28984243/long-term-health-effects-after-resolution-of-acute-cryptosporidium-parvum-infection-a-1-year-follow-up-of-outbreak-associated-cases
#15
Rhianwen E Stiff, Angharad P Davies, Brendan W Mason, Hayley A Hutchings, Rachel M Chalmers
We describe a longitudinal study carried out in an adult outbreak-associated cohort to investigate health effects, including post-infectious irritable bowel syndrome, occurring after resolution of acute Cryptosporidium parvum infection. New symptoms self-reported up to 12 months included: weight loss (31 %), abdominal pain (38 %), diarrhoea (33 %), eye pain (9 %), joint pain (33 %), fatigue (22 %) and symptoms consistent with irritable bowel syndrome (IBS) (28 %). Two people were medically diagnosed with IBS...
October 6, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28981625/frequency-of-and-factors-associated-with-sexual-dysfunction-in-patients-with-inflammatory-bowel-disease
#16
P Rivière, C Zallot, P Desobry, J M Sabaté, J Vergniol, F Zerbib, L Peyrin-Biroulet, D Laharie, F Poullenot
Background: Improvement of quality of life is a main objective in inflammatory bowel disease [IBD] management. Data on sexual dysfunction [SD] in IBD are scarce. This study compared rates of SD between IBD patients and healthy controls [HC], and searched for predictors of SD. Methods: All consecutive IBD patients seen in two tertiary centres during 2 months were invited to fill an anonymous validated questionnaire on their sexual function [Female Sexual Index Function and International Index of Erectile Function]...
October 27, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28975689/inflammatory-cell-distribution-in-colon-mucosa-as-a-new-tool-for-diagnosis-of-irritable-bowel-syndrome-a-promising-pilot-study
#17
J Boyer, M-C Saint-Paul, B Dadone, S Patouraux, M-H Vivinus, D Ouvrier, J-F Michiels, T Piche, M K Tulic
BACKGROUND: Currently, there are no histological criteria to diagnose irritable bowel syndrome (IBS). Our aims were (i) to examine the distribution of inflammatory cells in the colon of healthy and IBS subjects and (ii) to find histological diagnosis criteria for IBS. METHODS: Colonic biopsies were taken from four distinct regions of the colon from 20 controls (HC) and 11 patients with IBS (4 with constipation (IBS-C) and 7 with diarrhea (IBS-D) and embedded in paraffin...
October 4, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28954618/diagnosis-and-management-of-irritable-bowel-syndrome-a-guide-for-the-generalist
#18
REVIEW
Ecushla C Linedale, Jane M Andrews
Irritable bowel syndrome (IBS) and other functional gastrointestinal disorders (FGIDs) are so prevalent they cannot reasonably have their diagnoses and management based within specialty care. However, delayed diagnosis, lengthy wait times for specialist review, overinvestigation and lack of clear diagnostic communication are common. The intrusive symptoms of IBS and other FGIDs impair patient functioning and reduce quality of life, and come with significant costs to individual patients and the health care system, which could be reduced with timely diagnosis and effective management...
September 2, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28948467/post-infectious-irritable-bowel-syndrome
#19
REVIEW
Yeong Yeh Lee, Chandramouli Annamalai, Satish S C Rao
PURPOSE OF REVIEW: Post-infectious irritable bowel syndrome (PI-IBS) is characterized by persistent abdominal pain and diarrhea, typically following an episode of infectious gastroenteritis. The mechanisms that underlie IBS-D remain elusive, but PI-IBS provides a mechanistic model of this disorder. This review provides an up-to-date appraisal of the pathophysiology, clinical features, and management approaches for PI-IBS. RECENT FINDINGS: Disordered immune reactions and release of cytokines with resultant gut inflammation and dysfunction appear to be key features of PI-IBS...
September 25, 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/28932270/repeat-treatment-with-rifaximin-improves-irritable-bowel-syndrome-related-quality-of-life-a-secondary-analysis-of-a-randomized-double-blind-placebo-controlled-trial
#20
Brooks D Cash, Mark Pimentel, Satish S C Rao, Leonard Weinstock, Lin Chang, Zeev Heimanson, Anthony Lembo
BACKGROUND: Diarrhea-predominant irritable bowel syndrome (IBS-D) impairs patient quality of life (QOL). Rifaximin is an oral, nonsystemic antibiotic indicated for IBS-D. The objective of this secondary analysis was to evaluate rifaximin retreatment on IBS-related QOL in patients with IBS-D. METHODS: Patients received open-label rifaximin 550 mg three times daily for 2 weeks. Clinical responders [simultaneously meeting weekly response criteria for abdominal pain (⩾30% improvement from baseline in mean weekly pain score) and stool consistency (⩾50% decrease from baseline in number of days/week with Bristol Stool Scale (BSS) type 6 or 7 stools) during ⩾2 of first 4 weeks posttreatment] who relapsed during an up to 18-week treatment-free observation phase were randomly assigned to receive two 2-week courses of double-blind rifaximin or placebo, separated by 10 weeks...
September 2017: Therapeutic Advances in Gastroenterology
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