Active clinical trials for "Irritable Bowel Syndrome"

The Control Study for the Multidisciplinary Approach to the Study of Chronic Pelvic Pain (MAPP) Research Network has been established to focus on a broader approach to the study of Interstitial Cystitis (IC)/Painful Bladder Syndrome (PBS) in men and women, and Chronic Prostatitis (CP)/Chronic Pelvic Pain Syndrome (CPPS) in men, than previously undertaken. Participants with no Urologic Pelvic Pain Syndromes as well as participants with specific conditions (Fibromyalgia (FM), Irritable Bowel Syndrome (IBS), Chronic Fatigue Syndrome (CFS)) are being recruited for the Trans-MAPP Control Study. These participants will act as a reference/control group for the Trans-MAPP Epidemiology & Phenotyping (EP) Study. As with many chronic pain disorders, IC and CP are poorly understood, and treatment is often not helpful. The goal of this study is to better understand how pain is felt in people with IC or CP. The MAPP Control Study is an observational study that will enroll participants from 6 Discovery Sites and 3 Satellite Sites across the U.S. The investigators will ask questions and gather information about the health and life of the participants for research purposes. The investigators hope that this study will lead to improvement in the treatment of IC and CP.

To explore the predictive value of alarm signs ("red flags") for a diagnosis of functional gastrointestinal disorders (FGID) in children. To assess the natural history of pain predominant functional gastrointestinal disorders (FGID) in newly diagnosed pediatric patients. To document the benefit of various treatment regimens currently employed in managing FGID. To assess the short- and long-term impact of various FGID regimens. To allow physicians to gain a better understanding of the epidemiology of FGID. Hypothesis: There are presenting symptoms or results from diagnostic tests that are more likely to associated with conditions different from FAP or IBS. Symptoms of children with FAP/IBS change overtime regardless of the treatments used.

The research project addresses the following hypotheses (A) the normal balance of beneficial and detrimental commensal intestinal bacteria is deranged in IBS, with selective alterations in clinically defined patient subsets i.e., diarrhea predominant IBS (D-IBS) and post-infectious IBS (PI-IBS); (B) these changes in intestinal microflora are associated with sub-clinical mucosal inflammation and activation of the mucosal immune system; and (C) activation of the mucosal immune system leads to alterations in gastrointestinal (GI) functions (i.e., motility and sensation) and functional symptoms.

The aim of this study is to develop and validate a questionnaire (non-invasive technique) to identify patients who are hypervigilant for noxious visceral sensations and who show a lower threshold to report pain. This questionnaire would be useful in studies investigating the role of visceral pain hypervigilance and pain sensitivity in the comorbidity of IBS with other somatic disorders.

The primary objective of this study is to estimate the overall prevalence of IBS medically diagnosed and diagnosed using Rome III or IV criteria in GI adult outpatients in China.

This study is a cross-sectional observational study design that aimed to include 2000 IBS patients. We used several validated questionnaires, to assess IBS characteristics (such as subtype, severity), psychological features (QoL, anxiety and depression) and assess nutritional triggers. Subjects filled in the questionnaire online, and was spread across the Netherlands.

Reliable patient reported outcome measures (PROM's) for symptom assessment in irritable bowel syndrome are essential in order to investigate natural disease course and potential treatment options aimed at symptom improvement, since biological markers are currently unavailable. Currently used symptom assessment methods, i.e. end-of-day or end-of-week questionnaires, have considerable limitations. The Experience Sampling Method (ESM), an electronic questioning method characterized by random and repeated, momentary assessments in the subject's current state and environment, might overcome these limitations. Aim of this study is to validate an IBS-specific electronic patient-reported outcome measure, based on the Experience Sampling Method-principle, for symptom assessment in IBS.

assess the incidence of the entire spectrum of esophageal disorders and possible theories for overlap in IBS patients using different diagnostic modalities.

The pathogenesis of irritable bowel syndrome (IBS) is considered immune reaction of gastrointestinal tract. Therefore there is growing evidence that IBS could occur after gastroenteritis. However, little is known about the incidence of IBS after acute diverticulitis. We thought that post diverticulitis status could induce IBS because diverticulitis was also bowel inflammatory disorder. This survey was designed to identify incidence of post-diverticulitis IBS and risk factor in Korea.

In this study we will investigate the expression of the fructose transport protein GLUT5 in the small intestine in patients with functional GI disoders and fructose intolerance compared to matched healthy controls.