Illustrative estimate only - not verified by this sponsor. Contact the study team for actual compensation.
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
What happens when you apply
Reach out via phone or email to express interest
Brief call to discuss your health history
Medical screening at the research site
Begin your journey in the study
Inclusion Criteria: * IBS patients (based on ROME III Criteria) * Healthy subjects Exclusion Criteria: \- All subjects with not IBS related complaints
imaguineapig pulls live data from ClinicalTrials.gov (NIH/NLM).Illustrative estimate only - not verifiedPay estimates are approximate ranges based on study type and are not confirmed by sponsors — actual compensation may differ. Eligibility indicators use limited criteria (age, sex) only. We do not provide medical advice. Always contact the study team directly to confirm compensation, full eligibility, and risks before enrolling.