Probiotics in Irritable Bowel Syndrome

Phase 3

Withdrawn

• Conditions: Irritable Bowel Syndrome
• Interventions: Drug: co-biotic; Drug: placebo 2T/day

• Registration Number: NCT00846170
• Lead Sponsor: Meir Medical Center

Brief Summary

Probiotics are defined as 'mono- or mixed cultures of live micro-organisms which, when applied to animal or man, beneficially affect the host by improving the properties of the indigenous flora'. Certain probiotics possess potent antibacterial and antiviral properties. Probiotic antibacterial activity may derive from the direct secretion of bacteriocins, the elaboration of proteases directed against bacterial toxins or through their ability to adhere to epithelial cells and thus exclude pathogens. The antiviral properties of some probiotic organisms, including the stimulation of interferon production, together with the well-documented efficacy of certain probiotics in the therapy of rotavirus diarrhea suggests the potential for a role for these agents in PI-IBS. The efficacy of some probiotics in preferentially relieving 'gas-related' symptoms may be related to qualitative changes in the colonic flora, as described earlier, or through the suppression of Small intestinal bacterial overgrowth (SIBO) , as there are reports of efficacy of probiotics in SIBO.

The aim of the proposed study is to investigate whether the probiotic preparation "co biotic" can change the composition of fecal bile acids, fatty acids and bacterial composition, and whether such changes, if they occur, are correlated to a change in the symptoms of patients with IBS.

Materials and methods:

Patients diagnosed as having IBS by the Rome III criteria will be included in the study.

Study subjects will be interviewed by a physician who will asses the diagnosis of IBS according to the Rome III criteria. Subjects will sign an informed consent and fill an IBS questionnaire and a health related quality of life questionnaire,

A fecal sample will be obtained

The subject will receive the probiotic product in a dose of 2 tablets/day, or a placebo containing all the active ingredients in the probiotic capsule, besides the bacteria, for 4 weeks. They will then enter a washout period of 2 weeks in which they will not receive anything, and then another 4 weeks in which they will receive the probiotic product in a dose of 2 tablets/day, or a placebo. Patients will be randomized so that they will receive the study drug for 4 weeks and the placebo for 4 weeks, in a double-blinded fashion. Thus each patient will be his own control.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2009-02-16
• Study First Submitted QC: 2009-02-17
• Study First Posted: 2009-02-18
• Study Start: 2010-09
• Status Verified: 2011-05
• Primary Completion: 2012-03
• Last Update Submitted: 2015-03-08
• Last Update Posted: 2015-03-10

Recruitment & Eligibility

• Status: WITHDRAWN
• Sex: All
• Target Recruitment: Not specified

Inclusion Criteria

• IBS by Rome III criteria

Exclusion Criteria

• other GI disease

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
probiotics	co-biotic	patients with IBS that will receive investigational treatment for 4 weeks
Placebo	placebo 2T/day	cross over of patients from arm 1

Primary Outcome Measures

Name	Time	Method
clinical improvement as judged by IBS questionnaire, change in fecal bacterial composition secondary: change the composition of fecal bile acids, fatty acids and bacterial composition	2 years
change the composition of fecal bile acids, fatty acids and bacterial composition	1 year

Secondary Outcome Measures

Name	Time	Method
clinical improvement	2 years

Trial Locations

Locations (1)

Meir Medical center; 🇮🇱 Kefar Saba, Israel