Lipids and Insulin Sensitivity

November 3, 2011 updated by: Maastricht University Medical Center

Skeletal Muscle Lipid Metabolism and Insulin Sensitivity: Can Dietary Fatty Acid Composition Modulate Muscle Lipid Storage?

Rationale: The investigators hypothesize that a change in dietary fat quality (an increase in unsaturated fatty acids) may modulate fuel partitioning within the type 2 diabetic muscle towards less accumulation of lipid metabolites and an improved insulin sensitivity.

Objective:

  1. The contribution of dietary vs endogenous fat sources to lipid overflow in the circulation and to skeletal muscle lipid uptake and storage in obese insulin resistant subjects vs obese insulin sensitive controls.
  2. The acute effect of meals with various fatty acid composition ((high saturated (SFA) vs polyunsaturated (PUFA) vs monounsaturated (MUFA)) on skeletal muscle lipid uptake and storage, fatty acid mediated gene expression and postprandial insulin sensitivity in obese insulin resistant subjects.

Study design: single-blind randomized cross-over trial

Study population: obese males (35-70 years) with or without insulin resistance

Intervention:

  1. 1 test meal
  2. 3 test meals with a different fatty acid composition

Main study parameters/endpoints:

More insight whether dietary fat quality may modulate circulating lipids and skeletal muscle fatty acids handling, and may affect oxidative capacity and lipid storage in parallel to an increased insulin sensitivity.

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.

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.
Interventional

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.
10

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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

  • Netherlands
    • Limburg
      • Maastricht, Limburg, Netherlands, 6229ER
        • Maastricht University Medical Centre +

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

35 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Obese males aged between 35 and 70 years with insulin resistance.

Exclusion Criteria:

  • History of type 2 diabetes.
  • Liver or kidney failure.
  • Diseases in which the live expectation is shorter then 5 years.
  • The use of experimental medication.
  • Diseases/medication use that may have an influence on the glucose tolerance.
  • Not to be able to understand the study information.
  • Users of fatty acid supplements including fish oils etc.
  • Users of high doses of antioxidant vitamins.
  • Athletes.
  • People on a diet of people that are planning to lose weight.

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: Crossover Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
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.
Experimental: Saturated fatty acid test meal
Dietary supplement: test meals with various fatty acid compositions
Three different milkshakes with a U13C palmitate tracer added
Experimental: Monounsaturated fatty acid meal
Dietary supplement: test meals with various fatty acid compositions
Three different milkshakes with a U13C palmitate tracer added
Experimental: Polyunsaturated fatty acid meal
Dietary supplement: test meals with various fatty acid compositions
Three different milkshakes with a U13C palmitate tracer added

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
Acute effect of meals with various fatty acid composition on postprandial insulin sensitivity
Time Frame: the individual participants will be measured within 8-10 weeks.
The acute effect of meals with various fatty acid composition ((high saturated (SFA) vs polyunsaturated (PUFA) vs monounsaturated (MUFA)) on postprandial insulin sensitivity will be measured during the stable isotope test.
the individual participants will be measured within 8-10 weeks.
Acute effect of meals with various fatty acid composition on forearm muscle fatty acid handling
Time Frame: the individual participants will be measured within 8-10 weeks.
Using the stable isotope technique, we can differentiate between the metabolic fate of dietary versus endogenous fatty acids
the individual participants will be measured within 8-10 weeks.

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
Acute effect of meals with various fatty acid composition on intramuscular fatty acid handling
Time Frame: the individual participants will be measured within 8-10 weeks.
the individual participants will be measured within 8-10 weeks.
Acute effect of meals with various fatty acid composition on transcriptional regulation of the fatty acid metabolism in skeletal muscle biopsies
Time Frame: the individual participants will be measured within 8-10 weeks.
Transcriptional regulation will be measured by means of microarray.
the individual participants will be measured within 8-10 weeks.

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.
Maastricht University Medical Center

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: Ellen E Blaak, PhD, Prof, Maastricht University Medical Centre +

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

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.
October 1, 2008

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 1, 2010

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.
August 1, 2011

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).
October 19, 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 3, 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 8, 2011

Study Record Updates

Last Update Posted (Estimate)

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.
November 8, 2011

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.
November 3, 2011

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.
November 1, 2011

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.
  • 08-3-030

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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