Probiotics as a Novel Approach to Modulate Gut Hormone Secretion and Risk Factors of Type 2 Diabetes and Complications

July 28, 2011 updated by: German Diabetes Center

Phase I Study of Probiotics as a Novel Approach to Modulate Gut Hormone Secretion and Risk Factors of Type 2 Diabetes and Complications

The investigators aim to test the hypothesis that Lactobacillus Reuteri-enriched microbiota improves insulin sensitivity and glucose tolerance in obese healthy and obese type 2 diabetes patients by improving gut hormone secretion and compare these findings to healthy lean subjects.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Prediabetes and diabetes are accompanied by insufficient gut hormone release, insulin resistance, insufficient insulin secretory capacity and low grade systemic inflammation. Results of recent animal experiments suggest that ingestion of probiotics not only influences gut microbiota composition and intestinal permeability but also secretion of GLP-2 as well as insulin resistance, components of metabolic syndrome and diabetes development. GLP-2 secretion has been suggested to be a key mediator of probiotic effects mediating decreased intestine permeability through binding to intestinal GLP2 receptor in animal studies. Insulinotropic GLP-1, which is reduced in patients with type 2 diabetes, has also been described to be influenced by gut microbiota composition. We aim to test the hypothesis that Lactobacillus Reuteri-enriched microbiota improves insulin sensitivity and glucose tolerance in obese healthy and obese type 2 diabetes patients by improving gut hormone secretion. In a prospective, double-blinded, placebo controlled randomized 10 weeks trial we aim to investigate metabolic and immunological changes related to modified gut microbiota by analysing (1) gut hormone secretion, (2) insulin sensitivity and glucose tolerance, and (3) systemic LPS concentrations and immune status.

Study Type

Interventional

Enrollment (Anticipated)

20

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

40 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Obese subjects: age 40 - 65 years, obesity (BMI 30-45 kg/m2), non-smoking, absence of gastrointestinal disease, willingness to abstain from intake of fermented milk products over a study period of 8 weeks.
  • Healthy control subjects: non-obese (BMI 19-25 kg/m2), non-diabetic subjects, matched for age and sex, non-smoking, absence of gastrointestinal disease, willingness to abstain from intake of fermented milk products over a study period of 8 weeks.

Exclusion Criteria:

  • pregnancy, cancer, chronic diseases, antibiotic therapy, competitive athletes.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Probiotic capsule
Dietary supplement: Lactobacillus reuteri
twice daily
Placebo Comparator: placebo capsule
Dietary supplement: Lactobacillus reuteri
twice daily

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Insulin resistance
Time Frame: 8 weeks
8 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
gut hormones (GLP-1, GLP-2, GIP)
Time Frame: 8 and 10 weeks
8 and 10 weeks
insulin secretion
Time Frame: 8 and 10 weeks
8 and 10 weeks
measurement of cytokines to define the immune status
Time Frame: 8 and 10 weeks
measurement and analysis of proinflammatory cytokines (Interleukin (IL)-6, tumor necrosis factor (TNF)-α, IL-1ß, Macropahge inflammatory protein (MIP)-1ß) and regulatory cytokines (IL-10, transforming growth factor (TGF)-ß, IL1ra) from peripheral blood samples collected during this trial
8 and 10 weeks
body weight
Time Frame: 8 and 10 weeks
8 and 10 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

German Diabetes Center

Collaborators

Heinrich-Heine University, Duesseldorf

Investigators

  • Principal Investigator: Nanette C Schloot, Priv.-Doz. MD, German Diabetes Center, Duesseldorf

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2010

Primary Completion (Anticipated)

December 1, 2011

Study Completion (Anticipated)

December 1, 2011

Study Registration Dates

First Submitted

November 24, 2010

First Submitted That Met QC Criteria

November 29, 2010

First Posted (Estimate)

November 30, 2010

Study Record Updates

Last Update Posted (Estimate)

July 29, 2011

Last Update Submitted That Met QC Criteria

July 28, 2011

Last Verified

July 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Probiotic-01

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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