Active clinical trials for "Irritable Bowel Syndrome"

Visceral hypersensitivity is frequent in IBS population up to 60% and is correlated with severity and altered quality of life. Sleeping troubles are most frequent in IBS population. Insomnia is a frequent disorder with an important cost for healthcare. Insomnia could decrease pain threshold. Visceral hypersensitivity was never measure in patients with insomnia. The hypothesis is IBS patients with insomnia probably have lower visceral pain threshold. The objective is to assess pain threshold during a barostat procedure in in IBS patients with or without insomnia in comparison with healthy volunteers or patients with insomnia. If the hypothesis are confirmed, insomnia should be look at in IBS patients and its treatments could improve visceral hypersensitivity and IBS symptoms.

This longitudinal study is being done to understand mechanisms underlying development of irritable bowel syndrome (IBS) and the role of the gut bacteria in development of symptoms. This information will be used to determine whether temporal changes in gut microbial taxonomy and metabolism are associated with changes in symptom severity in IBS, and if targeted dietary interventions, including prebiotics, can reverse or moderate these changes.

It is well known that the intestinal barrier is altered in celiac disease (CD), an autoimmune disease that develops in genetically predisposed subjects exposed to ingestion of wheat gliadin and of related prolamines of barley and rye. More recently, defective epithelial barrier has been implicated in the pathogenesis of other conditions such as irritable bowel syndrome (IBS). At present IBS is still considered a functional condition although low-grade inflammation has been associated with its manifestation, particularly that following infection. Different substances have been implicated in the (dis)regulation of intestinal barrier, among them zonulin seems to play a key role. Other gastrointestinal peptides are GPL-2, Ghrelin, and Epidermal growth factor (EGF). In order to shed light on the hormonal regulation of intestinal barrier function in celiac patients before undergoing a gluten free diet and possible differences with those of IBS patients, in the present study the investigators will apply the non-invasive lactulose/mannitol permeability test toward the evaluation of intestinal damage. The pattern of intestinal permeability and the GI peptides concentration will be compared in celiac patients, IBS patients and healthy controls.

The goal of the study is to identify possible polymorphisms on the loci of candidate genes that may be involved in modulation of pain and inflammation in irritable bowel syndrome.

Recently it has been reported that a consistent percentage of the general population consider themselves to be suffering from problems caused by wheat and/or gluten ingestion, even though they do not have CD or wheat allergy. This clinical condition has been named Non-Celiac Gluten Sensitivity' (NCGS). In a previous paper the investigators suggested the term 'Non-Celiac Wheat Sensitivity' (NCWS), since it is not known what component of wheat causes the symptoms in NCGS patients, and the investigators also showed that these patients had a high frequency of coexistent multiple food hypersensitivity. Nowadays only few data are available on the histological characteristic of duodenal and rectal biopsies of NCWS patients. The researchers have just demonstrated a significant eosinophils infiltration of the duodenal and colon mucosa, and a significant infiltration of CD45+/CD3-CD14- cells in the rectal mucosa of NCWS patients upon wheat challenge, thus configuring a diffuse gastrointestinal "inflammatory/immunologic" pattern. The aims of the present study are: 1) to investigate the histological characteristics in duodenal and rectal biopsies between NCWS and irritable bowel syndrome (IBS) patients, and 2) to evaluate which site (i.e. duodenal or rectal) shows "inflammatory/allergic" features useful for NCWS histological diagnosis.

The purpose of the study is to map regions of brain activation following rectal stimulation in children with irritable bowel syndrome (IBS) and healthy controls.

The purpose of this study is to determine whether a clinical diagnosis of irritable bowel syndrome based on patient reported symptoms and a few blood tests is safe, and to determine whether a clinical diagnosis is as good for the patient and as economical for the society as a diagnosis based on exclusion of a number of organic diseases by performing a number of blood tests, fecal analyzes and a scopic examination of bowel. The purpose of the second part of the study is to determine which intestinal parasites the patients have in their bowel and whether these parasites are the cause of the disease.

Irritable bowel syndrome (IBS) is a chronic disease characterized by the association of abdominal pain and transit disorders. IBS affects 5 to 10% of the population. There are several forms of IBS: IBS-D (with predominant diarrhea), IBS-C (with constipation predominant) and IBS-M (mixed with alternating diarrhea and constipation). In the absence of a diagnostic test to confirm the existence of this syndrome, the diagnosis of IBS is based on clinical criteria (Rome IV criteria). In patients suspected of IBS, especially in patients with diarrhea (IBS-D or IBS-M), a colonoscopy with biopsies is often proposed in addition to biological tests (Complete Blood Count, C-reactive protein, thyroid stimulating hormon and anti-transglutaminase antibodies) by the physician or gastroenterologist to exclude an organic digestive disease such as celiac disease, IBD (Crohn's disease or ulcerative colitis), microscopic colitis or even neoplasia. The colonoscopy is an invasive exploration and does not allow exploration of the entire small bowel. The development of capsules allowed the exploration of the small bowel more recently of the colon. The new developed pan-capsule allows evaluation of both small bowel and colon. The aim of this work is to evaluate in patients younger than 50 years, presenting suspicious digestive symptoms of IBS with diarrhea, the interest of a strategy based on the pan-capsule as an alternative to colonoscopy to eliminate a diagnosis of organic digestive disease (celiac disease, IBD, neoplasia, ..).

Data assessing the long-term bowel dysfunction following low anterior resection is still lacking. The aim of this study is to evaluate late functional results of patients who underwent rectal resection for rectal cancer. This included calculating LARS and Wexner score and identifying possible risk factors of late postoperative bowel disorders.

A cross-sectional study was conducted to collect the relevant data of college students' mobile phone addiction and FGIDs (IBS, FD) in the form of questionnaire, so as to understand the situation of college students' mobile phone addiction and the incidence of FGIDs (IBS and FD), and explore the correlation, so as to provide new ideas and scientific basis for the prevention, diagnosis and treatment of FGIDs among college students.