Active clinical trials for "Irritable Bowel Syndrome"

Irritable bowel syndrome (IBS) is one of the most commonly diagnosed functional bowel disorders (FBD). IBS is diagnosed by symptom-based criteria，while the available literature suggests that symptom-based diagnostic algorithms, which often used for clinical and research studies, have poor sensitivity. Although diagnostic algorithms can discriminate IBS from health or upper gastrointestinal tract conditions, studies do not provide convincing evidence that the criteria can discriminate IBS from organic disease of the colon. Rectal bleeding, anemia, weight loss, fever, family history of colon cancer, and age above 50 years are considered the warning signs of severe gastrointestinal disease. Colonoscopy is the most direct way to rule out organic colonic diseases. There is no consensus so far on whether patients with suspected IBS lacking warning signs need colonoscopy or not. In 2016, the Rome IV criteria was updated and published. However, there are few studies on the clinical practice based on Rome IV. The value of alarm symptoms in discriminating organic disease from functional disorders remains uncertain and further research is needed. To evaluate the predictive value of alarm symptoms of IBS patients based on Roman IV, the investigators designed this cross-sectional study.

The aims of this study is to investigate a blood-based biomarker that can replace endoscopy in patients with inflammatory bowel disease. For this purpose, blood sample of patients wiht inflammatory bowel disease (ulcerative colitis, Crohn 's disease) was collected at the same time the endoscopy is performed, stored after centrifugation, and analyzed accordingly. Selected biomarkers from the blood sample were investigated to compare those of patients with inflammatory bowel disease and those of general controls. Males and females over the age of 19 participated in the study and are excluded if they have chronic kidney disease or blood clotting disease. The outcome is a find of a blood-based biomarker that best reflects a disease activity.

The purpose of this study is to investigate the frequency and severity of chronic pelvic pain (CPP) in adult women living in Copenhagen Country and Zealand Country (total population 2,4 million), Denmark, in relation to selected factors, such as basic demographic and clinical factors, health related quality of life, physical activity and abnormal muscular findings in the pelvic area.

In the investigators study, the investigators will focus on the screening of the related proteins and miRNA to IBS in order to reveal the possible clues or molecular mechanism for this disorder.

Irritable bowel syndrome is a functional disorder of the gastrointestinal tract diagnosed with the Rome criteria. The Rome IV criteria are based on abdominal pain symptoms and stool habits including stool frequency and stool forms [1]. They define 3 main subtypes based on symptoms: 1) IBS with diarrhea; 2) IBS with constipation: and 3) mixed symptoms of constipation and diarrhea. The IBS with diarrhea (IBS-D) subtype has the highest prevalence. Currently, treatment of IBS-D includes antidiarrheals, bile acid sequestrants, antispasmodics, tricyclic antidepressants, and FODMAP diet. However, many patients are intolerant or unresponsive to the above treatments. Outside of IBS, chronic diarrhea affects about 5% of adults. We have described a syndrome in a subset of IBS patients presenting with post prandial diarrhea, flushing and dermatographia whose symptoms are prevented by pre-treatment with combined H1 and H2 antihistamines [2]. However, the prevalence of this syndrome among the IBS + D patients is not known nor have the clinical characteristics or predictors of antihistamine responsive IBS + D been defined.

Abdominal pain is a central symptom of Inflammatory Bowel Disease (IBD) and Irritable Bowel Syndrome (IBS). IBD is an autoimmune disease characterized by inflammation of the gastrointestinal tract. IBS does not have clear biomarkers and is diagnosed based on symptom reports. The aim of this study is to explore biopsychosocial factors which may perpetuate and/or increase the severity of pain in these conditions. The main focus will be on the role of top-down brain processes in the experience of abdominal pain.

Radionuclide scintigraphy is the gold standard technique to interpret OCTT but there is no normative data available for its interpretation in Indian population. Previous studies to determine OCTT have all been done with LHBT, which has many limitations. Besides there are few small comparative studies between scintigraphy and LHBT, that too not in Indian population. The aim of this study is to validate LHBT to measure OCTT compared with scintigraphy and to standardize the normal OCTT in healthy individuals

To assess the relationship between primary headaches and irritable bowel syndrome

The study aims to: Determine whether the density of epithelial gaps in terminal ileum of patients with irritable bowel syndrome (IBS) is different from that in inflammatory bowel disease (IBD) patients and normal controls by confocal laser endomicroscopy (CLE). Evaluate the relationship between the density of epithelial gaps and IBS subtypes, and visceral hypersensitivity.

Discriminating irritable bowel syndrome (IBS) from inflammatory bowel disease (IBD), especially with mild disease activity, is common clinical challenge. Most of the patients with suspected IBS have to go invasive procedures (colonoscopy/gastroscopy). In order to avoid invasive investigations, there is a search for noninvasive markers with the capacity to distinguish between IBS and IBD. Dr Hossam Haick (Department of Chemical Engineering, Technion) developed a system that combines nano-metals produced in his laboratory with electrical devices (transistors). The combination between a nanomaterial and an electrical transistor induces a change in its electrical behavior upon exposure to the material being examined; that is, a change in its electrical properties. The change in its electrical behavior is translated into a computerized graphic signal. The electronic nose is composed of an air pump, a filter for filtering external contaminants and an array of sensors. Each sensor transmits a signal according to the materials it "knows" how to identify. Thus, it is possible to characterize most of the substance families characteristic of a certain disease, and the same system is designed for differential diagnosis of different diseases. The purpose of the investigators study is to use the "electronic nose" to find bio-markers that will help to diagnose IBD and IBS without using invasive procedures. The plan is to collect 200 samples (50 IBS' 50 Crohn's disease, 50 ulcerative colitis and 50 controls). The patients included in the study will undergo an evaluation by a gastroenterologist after signing an informed consent and will answer a questionnaire. The samples will analyzed in the laboratory of Dr. Haick.