The Effect of Diet on Microbial Profile and Disease Outcomes in Patients With Inflammatory Bowel Diseases

NCT ID: NCT02858557

Last Updated: 2016-08-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

70 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-09-30

Study Completion Date

2018-09-30

Brief Summary

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This clinical study is designed to evaluate the effect of two dietary patterns, Mediterranean diet and the specific carbohydrate diet on clinical, inflammatory and microbial parameters in patients after pouch surgery and to assess the effect of a personal tailored diet, based on microbial profile, on disease outcomes and generate a predictive model for future interventions.

Detailed Description

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Increasing evidence exist regarding the role of diet in the pathogenesis of inflammatory bowel diseases. One possible mechanism for the effect of diet on intestinal inflammation is modification of the gut microbial composition. However, the relationship between diet, the microbiome and intestinal inflammation is still vague.

The investigators plan to perform a crossover clinical trial. Seventy ulcerative colitis patients post restorative proctocolectomy (pouch) will be randomly allocated into two short-term (one week) dietary interventions, the Mediterranean diet and the specific carbohydrate diet, to assess which diet has the required influence (i.e. increased diversity, decrease in specific pathobionts and increase in "anti-inflammatory" taxa) on the gut microbiome of each participant. Based on this assessment, each participant will be treated by a personally-tailored diet for up to one year, during which microbial composition, clinical parameters, and quality of life will be assessed.

Conditions

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Inflammatory Bowel Diseases Crohn's Disease Dietary Modification

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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Group A

Patients will be allocated to 7 days of Mediterranean diet and then will cross over to 7 days of specific carbohydrate diet

Group Type EXPERIMENTAL

Mediterranean diet

Intervention Type BEHAVIORAL

The Mediterranean diet is rich in complex carbohydrates and fibers and low in animal proteins and fats.

Specific Carbohydrate Diet

Intervention Type BEHAVIORAL

The specific carbohydrate diet is a dietary program popular among patients with IBD. The diet allows carbohydrate foods consisting of mono-saccharides only, and excludes di-saccharides and most polysaccharides.

Group B

Patients will be allocated to 7 days of specific carbohydrate diet and then will cross over to 7 days of Mediterranean diet

Group Type EXPERIMENTAL

Mediterranean diet

Intervention Type BEHAVIORAL

The Mediterranean diet is rich in complex carbohydrates and fibers and low in animal proteins and fats.

Specific Carbohydrate Diet

Intervention Type BEHAVIORAL

The specific carbohydrate diet is a dietary program popular among patients with IBD. The diet allows carbohydrate foods consisting of mono-saccharides only, and excludes di-saccharides and most polysaccharides.

Interventions

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Mediterranean diet

The Mediterranean diet is rich in complex carbohydrates and fibers and low in animal proteins and fats.

Intervention Type BEHAVIORAL

Specific Carbohydrate Diet

The specific carbohydrate diet is a dietary program popular among patients with IBD. The diet allows carbohydrate foods consisting of mono-saccharides only, and excludes di-saccharides and most polysaccharides.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Patients aged 18-75;
* Able and willing to sign an informed consent;
* Underwent pouch surgery because of refractory UC or Familial Adenomatous Polyposis (FAP) and have a functioning pouch.

Exclusion Criteria

* Patients with ileostomy, stricturing disease, use of antibiotics in the month prior to inclusion, significant comorbidity that precludes the patient from participating according to the physicians' judgment, non-Hebrew readers, pregnant and lactating women.
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Tel-Aviv Sourasky Medical Center

OTHER_GOV

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Iris Dotan, MD

Role: PRINCIPAL_INVESTIGATOR

Head, IBD center, Department of gastroenterology and liver diseases, Tel Aviv Sourasky Medical Center

Locations

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Dep. of Gastroenterology, Tel Aviv Sourasky Medical Center

Tel Aviv, , Israel

Site Status

Countries

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Israel

Central Contacts

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Lihi Godny, B.Sc

Role: CONTACT

+9723947305

Other Identifiers

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0240-16-TLV

Identifier Type: -

Identifier Source: org_study_id

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