Alpha Lipoic Acid and Insulin Resistance

June 18, 2013 updated by: University of California, San Francisco
Subjects will be screened with a 2 hour oral glucose tolerance test. After this screening visit, their insulin resistance will be measured. Subjects will then be given either alpha lipoic acid (antioxidant) or placebo for 6 weeks. The insulin resistance test will be repeated after the 6 weeks. We believe these studies will confirm the beneficial effect of alpha lipoic acid on insulin sensitivity.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

We propose to perform a placebo-controlled study of Alpha Lipoic Acid (LA) administration in a cohort of non-obese, non-diabetic, insulin resistant subjects. The insulin sensitivity of 180 subjects will be initially estimated by measuring fasting glucose and insulin levels (homeostasis model assessment) and oral glucose tolerance test (OGTT). The 60 most insulin resistant subjects will then be randomized to 6 weeks of therapy with either 600 mg three times a day of LA or placebo. To quantitate the ALA-induced improvements, euglycemic hyperinsulinemic clamps to evaluate insulin sensitivity, OGTT using deuterated glucose to evaluate glycolytic glucose disposal, and muscle biopsies to evaluate insulin signaling pathways, will be performed before and after treatment. We believe these studies will (1) confirm the beneficial effect of CR-ALA on insulin sensitivity; (2) further our understanding of the molecular mechanisms of LA action; and (3) because these insulin resistant subjects are at risk for the development of type 2 diabetes, the Metabolic Syndrome, and coronary artery disease (CAD), a demonstration of the beneficial effects of LA on insulin action could ultimately have important public health consequences.

Study Type

Interventional

Enrollment (Actual)

68

Phase

  • 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

  • United States
    • California
      • San Francisco, California, United States, 94143
        • University of California at San Francisco

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

20 years to 60 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy, not exercising regularly

Exclusion Criteria:

  • Diabetes, Impaired glucose tolerance, Heart disease, Liver disease, HIV, abnormal TSH results, other abnormal lab values

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Placebo
Dietary supplement: Alpha Lipoic Acid
Two 400 mg tablets of Alpha Lipic Acid are taken 3 times daily
Active Comparator: Anti-Oxidant
Alpha Lipoic Acid
Dietary supplement: Alpha Lipoic Acid
Two 400 mg tablets of Alpha Lipic Acid are taken 3 times daily

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Insulin Resistance
Time Frame: 0 months and 4 months
0 months and 4 months

Collaborators and Investigators

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

Sponsor

University of California, San Francisco

Investigators

  • Principal Investigator: Umesh Masharani, MD, University of California, San Francisco
  • Principal Investigator: Martha Kennedy, MD, University of California, San Francisco

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

January 1, 2008

Primary Completion (Actual)

September 1, 2010

Study Completion (Actual)

September 1, 2010

Study Registration Dates

First Submitted

February 17, 2009

First Submitted That Met QC Criteria

February 17, 2009

First Posted (Estimate)

February 18, 2009

Study Record Updates

Last Update Posted (Estimate)

June 20, 2013

Last Update Submitted That Met QC Criteria

June 18, 2013

Last Verified

June 1, 2013

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H6820-30422

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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