Dietary Intervention and Intestinal Microbiota in Non-alcoholic Fatty Liver

October 24, 2017 updated by: Prof. Claude Pichard, University Hospital, Geneva

Effect of Dietary Intervention on Intestinal Microbiota in Patients With Non-alcoholic Fatty Liver Disease

In patients with NAFLD/NASH, changes in liver lipid composition and function tests following a short dietary intervention are associated with changes in gut microbiota

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Study Hypothesis: In patients with NAFLD/NASH, changes in liver lipid composition and function tests following a short dietary intervention are associated with changes in gut microbiota

Study period:

  • Study duration for the participant: 7-10 weeks (1-4 weeks screening period, 3 weeks of intervention + 3 weeks of follow-up)
  • Expected study completion date: 30.04.2012 Study type: Single arm before-after study

Number of patients:

20 subjects with obesity and NAFLD / NASH

Main criteria for inclusion:

  • Obesity defined as BMI>30
  • Abnormal liver function tests defined as ALT > 1.5 times the upper limit of normal
  • NAFLD present at liver biopsy
  • Age > 18 years, < 60 years

Main exclusion criteria:

  • Inability or unwillingness to give consent
  • Parenteral nutrition or other ongoing dietary intervention
  • Bulimia
  • Other known cause of chronic liver disease, including hepatitis B or C, iron overload,
  • Use of substances known to alter intestinal permeability, including alcohol and NSAIDs

Intervention:

The phase 2 Eurodiet® program will be used as standardized hypo-caloric diet during a 3-weeks intervention period. The products are commercially available and prescribed to reach 1000 kcal/day. These products will be offered free of charge.

Primary Objective:

To assess the impact of dietary intervention on the relative abundance of fecal Bacteroidetes (expressed as the bacteroidetes to firmicutes ratio) in patients with obesity, abnormal liver function tests and NAFLD

Secondary Objectives:

  1. To compare fecal microbiota from patients with NAFLD or NASH at baseline
  2. To assess fecal microbiota changes in patients with NAFLD or NASH after dietary intervention
  3. To measure liver fat content at baseline and after dietary intervention
  4. To assess changes in liver function tests and ultrasensitive CRP, cytokines and serum LPS in relation to changes in microbiota and liver lipid composition
  5. To measure orocecal transit time, an index of intestinal pullulation, at baseline and after dietary intervention in patients with NAFLD or NASH
  6. To measure intestinal permeability at baseline and after dietary intervention in patients with NAFLD or NASH
  7. To assess body composition changes in relation to changes in microbiota and liver lipid composition

Statistical methods:

Baseline and end-of-treatment changes for both bacterial genders and subspecies will be compared using paired-sample Wilcoxon signed-rank test. ANOVA and paired t-test for comparison of other changes within groups. Pearson or Spearman tests will be used to assess correlations between changes in microbiota and changes in liver fat content, liver function tests, CRP, cytokines and intestinal pullulation and permeability.

Sample size:

20 patients with NAFLD/NASH will be studied before and after dietary intervention.

Assessment of end-points:

Fecal microbiota will be analysed with 454-Flex metagenomics Ultrasensitive CRP and serum LPS changes as compared with baseline Serum cytokines as measured with ELISA Liver fat content and composition will be measured using MR spectroscopy Small intestinal overgrowth and intestinal permeability will be assessed using standard 13C breath tests and polyethyleneglycol absorption test Body mass composition changes will be assessed using bioelectrical impedance analysis

Safety :

All adverse events will be recorded throughout the study, in compliance with GCP ICH E6 and national regulations.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Contacts and Locations

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

Study Locations

  • Switzerland
      • Geneva, Switzerland, 1211
        • Geneva University Hospital

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 60 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Obesity defined as BMI>30 Abnormal liver function tests defined as ALT > 1.5 times the upper limit of normal NAFLD present at liver biopsy Age > 18 years, < 60 years

Description

Inclusion Criteria:

Obesity defined as BMI>30 Abnormal liver function tests defined as ALT > 1.5 times the upper limit of normal NAFLD present at liver biopsy Age > 18 years, < 60 years

Exclusion Criteria:

Inability or unwillingness to give consent Bulimia Other known cause of chronic liver disease, including hepatitis B or C, iron overload, Use of substances known to alter intestinal permeability, including alcohol and NSAIDs

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

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
hypocaloric diet
The included patients are assigned to a hypocaloric standardized diet for 3 weeks.
Other: Hypocaloric diet
Eurodiet,standardized hypo-caloric diet, during 3 weeks
Other Names:
  • eurodiet 2

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
abundance of fecal abundance of fecal Bacteroidetes
Time Frame: thrice, at inclusion, day 21 and day 42
Bacterial cells/g caecal content
thrice, at inclusion, day 21 and day 42

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
liver fat content
Time Frame: twice, at inclusion and day 21
picsel/uni MRI
twice, at inclusion and day 21
liver function tests
Time Frame: four times, at screening, inclusion, day 21 and day 42
mmol/l
four times, at screening, inclusion, day 21 and day 42
CRP
Time Frame: thrice, at screening, inclusion and day 21
mg/l
thrice, at screening, inclusion and day 21
serum cytokines
Time Frame: twice, at inclusion and day 21
ng/ml
twice, at inclusion and day 21
serum LPS
Time Frame: twice, at inclusion and day 21
pg/ml
twice, at inclusion and day 21
Breath test pullulation
Time Frame: twice, at inclusion and day 21
twice, at inclusion and day 21
intestinal permeability
Time Frame: twice, at inclusion and day 21
Polyethylene glycol 3350/Polyethylene glycol 400 ratio
twice, at inclusion and day 21
body composition
Time Frame: thrice, at inclusion, day 21 and day 42
body composition in kg and % of body weight
thrice, at inclusion, day 21 and day 42
liver lipid composition (biopsy)
Time Frame: once, at screening
once, at screening

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University Hospital, Geneva

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Claude Pichard, MD, University Hospital, Geneva

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

Helpful Links

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 1, 2013

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 31, 2016

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 15, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 15, 2011

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 18, 2011

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 22, 2011

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 26, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 24, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 10-231

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.

Clinical Trials on Obesity

Clinical Trials on Hypocaloric diet

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings