The Role of R-Alpha Lipoic Acid in the Treatment of Atherosclerotic Vascular Disease

April 8, 2025 updated by: Gerd Bobe, Oregon State University

The Role of R-alpha Lipoic Acid in the Treatment of Atherosclerotic Vascular Disease

The purpose of this study is to see if a dietary supplement, R-alpha lipoic acid, is able to reduce risk factors in people with documented heart disease and increased levels of inflammation.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

28

Phase

  • Phase 2
  • Phase 3

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
    • Oregon
      • Portland, Oregon, United States, 97201
        • Oregon Health & Science University

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

50 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Documented congestive heart disease (CHD)(defined as at least one significant coronary stenosis > 50% on angiography, or history of documented myocardial infarction)
  • Not diagnosed with unstable angina, uncontrolled hypertension, heart failure, recent myocardial infarction (within last six months)
  • Not taking insulin or oral hypoglycemic agents, anti-inflammatory drugs other than aspirin, or hormone replacement therapy
  • On stable doses for four weeks prior to entry of lipid-lowering therapy (statins), aspirin, and angiotensin-converting enzyme inhibitors or other blood pressure medications. P
  • No tobacco use within 3 months of the study
  • No laboratory evidence of renal, hepatic, or hematological abnormalities
  • Not currently taking vitamin or antioxidant supplements, including R-alpha lipoic acid, except standard multivitamin/mineral supplements containing not more than the Daily Value (DV) of the vitamins and minerals;
  • Elevated levels of urinary and plasma F2-isoprostanes
  • Elevated plasma levels of hs-CRP

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: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Lipoic acid treatment
Participants take lipoic acid with a washout period before or after placebo.
Dietary supplement: R-alpha lipoic acid
300 mg R-alpha lipoic acid or placebo twice daily for 12 weeks, followed by a washout period of 12 weeks, followed by another treatment phase of the other treatment placebo or 300 mg R-alpha-lipoic acid for 12 weeks
Placebo Comparator: Placebo treatment
Participants take placebo with a washout period before or after lipoic acid treatment
Dietary supplement: R-alpha lipoic acid
300 mg R-alpha lipoic acid or placebo twice daily for 12 weeks, followed by a washout period of 12 weeks, followed by another treatment phase of the other treatment placebo or 300 mg R-alpha-lipoic acid for 12 weeks

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
hs-CRP
Time Frame: 12,20 & 32 weeks
High sensitive C-reactive protein
12,20 & 32 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
8-lso-PGF2a
Time Frame: 12, 20 & 32 weeks
8-iso-prostaglandin F2alpha
12, 20 & 32 weeks

Collaborators and Investigators

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

Sponsor

Oregon State University

Collaborators

Oregon Health and Science University
National Center for Complementary and Integrative Health (NCCIH)

Investigators

  • Principal Investigator: Gerd Bobe, PhD, Oregon State University

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)

August 1, 2011

Primary Completion (Actual)

November 1, 2011

Study Completion (Actual)

October 1, 2024

Study Registration Dates

First Submitted

October 1, 2008

First Submitted That Met QC Criteria

October 1, 2008

First Posted (Estimated)

October 2, 2008

Study Record Updates

Last Update Posted (Actual)

April 11, 2025

Last Update Submitted That Met QC Criteria

April 8, 2025

Last Verified

March 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • AT002034-2 (7187)
  • 5P01AT002034 (U.S. NIH Grant/Contract)

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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