Mast Cells in Acid-induced Intestinal Permeability
Stopped: Inactive
Belgium20 participantsStarted 2013-08
Plain-language summary
This is a randomized, double-blind, cross-over study in healthy volunteers. In the first part, the duodenum of the participants will be perfused with acid or saline, during which intragastric pressure will be monitored to assess activation of the duodenogastric reflex. After perfusion, duodenal biopsies will be collected to evaluate mucosal integrity. In the second part, healthy volunteers are treated with the mast cell stabilizer disodium cromoglycate or with a placebo during 14 days. Subsequently, the duodenum will be perfused with acid and intragastric pressure and mucosal integrity will be evaluated.
Who can participate
Age range
18 Years – 60 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* healthy
Exclusion Criteria:
* \- refused informed consent
* pregnant women or women who are breastfeeding
* symptoms or history of gastrointestinal disease
* diabetes mellitus
* coagulation disorders/anticoagulant therapy
* first degree relatives with celiac disease, Crohn's disease or type I diabetes mellitus
* taking antihistamines, ketotifen, cromoglycate, acetylsalicylates, NSAIDs, anticholinergics, theophylline, β2-agonists, codeine or opioid derivatives 2 weeks prior to the study
* taking steroid or immunosuppressive drugs 6 months prior to the study
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
evaluation of transepithelial resistance (mucosal integrity) of duodenal biopsies after duodenal saline or acid perfusion, after treatment with placebo or a mast cell stabilizer