Clinical Research Directory

Ebastine Versus Mebeverine in IBS Patients

Multicenter randomized controlled clinical trial comparing ebastine and mebeverine as treatment of irritable bowel syndrome Trial rationale 1. To perform a randomized superiority trial comparing the clinical efficacy of ebastine and mebeverine 2. To evaluate the impact of treatment with ebastine compared to mebeverine on quality of life and quality-adjusted life years Primary objective To provide further evidence of the superiority of histamine 1 receptor antagonism as novel treatment for patients with non-constipated IBS, as compared to mebeverine, one of the spasmolytics currently used as first line treatment of IBS. Secondary objective(s) To provide evidence that the histamine 1 receptor antagonist ebastine is more effective in reducing abdominal pain compared to the commonly used antispasmodic mebeverine

Measuring Nerve Activity in Small Human Intestinal Biopsies in IBS (Irritable Bowel Syndrome)

Rectal biopsies from IBS patients or healthy subjects will be taken. Biopsies will be used for: 1. the isolation of submucosal plexus to perform: 1.1 live nerve recordings and Calcium imaging; 1.2 immunohistochemistry; 1.3 mRNA (Messenger ribonucleic acids) isolation and real time PCR (Polymerase chain reaction); 2. culturing biopsies On the basis of these observations, the general aim of the study is to move a significant step forward in the current knowledge on human ENS (enteric nervous system) in IBS by establishing a live imaging method to record enteric nerves activity in small intestinal biopsies from humans. This development is unique in its kind as not other research groups have reported successful live recordings with calcium imaging in this preparation. In particular, the investigators aim: 1. to develop and validate the technique to measure activity in human enteric nerves in the submucous plexus isolated from rectal biopsies from healthy subjects and IBS patients; 2. to characterize this nerve activity in healthy subjects and IBS patients using both calcium imaging to evaluate the effect of different neuromodulators, immunohistochemistry and rtPCR to determine receptor expression levels and identify neurons and glial cells in the submucous ganglia; 3. to investigate whether the biopsies of IBS patients secrete more modulators/cytokines compared to healthy subjects and their potential to activate neurons. 4. to evaluate the influence of different food constituents (cow"s milk, wheat, yeast, gluten and soy) on the local reaction of the rectal mucosa and evaluate mast cell activation/degranulation in biopsies of IBS patients compared to healthy subjects. 5. To evaluate the amount of inflammatory mediators/metabolites in urine samples of IBS patients and healthy volunteers by the use of metabolic profiling

Effect of Multispecies Probiotic Supplementation on the Efficacy of Rifaximin α Therapy in Patients With Small Intestinal Bacterial Overgrowth (SIBO): a Randomized Placebo-controlled Trial

Small intestinal bacterial overgrowth (SIBO) is a common condition associated with gastrointestinal symptoms such as bloating, abdominal pain, diarrhea, and constipation, particularly in patients with irritable bowel syndrome. Antibiotic therapy with rifaximin is commonly used, but relapse rates remain high. This randomized, placebo-controlled clinical trial aims to evaluate whether supplementation with a multispecies probiotic containing Enterococcus faecium and Bacillus subtilis improves the effectiveness of rifaximin therapy in adult patients with SIBO. Participants will be randomly assigned to receive either rifaximin plus the probiotic or rifaximin plus placebo. Clinical assessments will include hydrogen breath testing and evaluation of gastrointestinal symptoms using standardized questionnaires at baseline and during follow-up visits. The study is being conducted at a single academic medical center in Poland and is sponsored by Państwowy Instytut Medyczny MSWiA. The probiotic and rifaximin are provided by Urgo. The results of this study may help determine whether probiotic supplementation can improve treatment outcomes and reduce recurrence of SIBO.

Effects of Tomato Consumption on Steatosis, Intestinal Function and Glucose and Lipid Metabolism in Subjects With NAFLD

The study in question is an interventional study with nutritional intervention. the aim of the study is to evaluate whether a diet enriched with tomatoes can have favorable effects on: * specific aspects associated with NAFLD, such as the degree of hepatic steatosis and fibrosis; * circulating levels of molecules correlated with the degree of generalized and hepatic inflammation and the blood concentrations of metabolic and cardiovascular risk factors associated with abdominal obesity; * intestinal barrier; * body composition; * intestinal microbiota; * symptoms of IBS (irritable bowel syndrome) in patients with NAFLD.

Influence of a Mediterranean Diet Combined With a Physical Activity Intervention, on NAFLD and Inflammation Parameters.

The study in question is an interventional study with nutritional intervention. The aim of the study is to evaluate whether the adoption of two different models of Mediterranean Diet, based on the different percentage of carbohydrates and lipids, associated with a program of moderate intensity aerobic physical exercise, in patients with obesity and NAFLD can exercise, after only 3 months, effects on: * specific aspects associated with NAFLD, such as the degree of hepatic steatosis and fibrosis; * circulating levels of molecules correlated with the degree of generalized and hepatic inflammation and the blood concentrations of metabolic and cardiovascular risk factors associated with abdominal obesity; * intestinal barrier; * body composition; * intestinal microbiota; * symptoms of IBS (irritable bowel syndrome) in patients with NAFLD.

Visceral Sensitivity in IBD (Irritable Bowel Disease) and IBS (Irritable Bowel Syndrome)

Aim: More insight in pathogenesis of IBS and IBD. Samples are collected in context of an European research project.