Probiotics in Irritable Bowel Syndrome
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Purpose
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.
| Condition | Intervention | Phase |
|---|---|---|
|
Irritable Bowel Syndrome |
Drug: co-biotic Drug: placebo 2T/day |
Phase 3 |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Efficacy Study Intervention Model: Crossover Assignment Masking: Double Blind (Subject, Caregiver, Investigator) Primary Purpose: Treatment |
| Official Title: | Double Blind Placebo Controlled Study of the Effect of Probiotics "Co-Biotic" (TM)on Symptoms and Fecal Bacterial Composition in IBS Patients |
- 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 [ Time Frame: 2 years ] [ Designated as safety issue: No ]
- change the composition of fecal bile acids, fatty acids and bacterial composition [ Time Frame: 1 year ] [ Designated as safety issue: No ]
- clinical improvement [ Time Frame: 2 years ] [ Designated as safety issue: No ]
| Estimated Enrollment: | 40 |
| Study Start Date: | September 2010 |
| Estimated Primary Completion Date: | March 2012 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Active Comparator: probiotics
patients with IBS that will receive investigational treatment for 4 weeks
|
Drug: co-biotic
give probiotic 2 t/day
|
|
Placebo Comparator: Placebo
cross over of patients from arm 1
|
Drug: placebo 2T/day
cross over of patients from study arm to placebo arm
|
Eligibility| Ages Eligible for Study: | 18 Years to 75 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- IBS by Rome III criteria
Exclusion Criteria:
- other GI disease
Contacts and Locations More Information
No publications provided
| Responsible Party: | Professor Fred Konokoff, Meir Medical center |
| ClinicalTrials.gov Identifier: | NCT00846170 History of Changes |
| Other Study ID Numbers: | PB-01-09 |
| Study First Received: | February 16, 2009 |
| Last Updated: | May 16, 2011 |
| Health Authority: | Israel: Ministry of Health |
Keywords provided by Meir Medical Center:
|
Irritable bowel syndrome probiotics |
Additional relevant MeSH terms:
|
Irritable Bowel Syndrome Colonic Diseases, Functional Colonic Diseases |
Intestinal Diseases Gastrointestinal Diseases Digestive System Diseases |
ClinicalTrials.gov processed this record on September 26, 2012
