Effect of Rosiglitazone on Myocardial Blood Flow Regulation in Type 2 Diabetes

November 8, 2007 updated by: University of Michigan
The overall hypothesis to be tested is that increased insulin resistance contributes to abnormal cardiac blood flow regulation in type 2 diabetic patients, which can be reversed by 6 months treatment with rosiglitazone. The planned experimental approach will be to utilize nuclear medicine techniques to evaluate whether the administration of rosiglitazone for 6 months can reverse regional deficits in myocardial blood flow and glucose utilization in type 2 diabetes in a randomized double blind controlled study. These studies will help elucidate the potential of rosiglitazone to correct deficits of myocardial blood flow complicating diabetes with the overall aim being the eventual prevention of sudden cardiac death.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

27

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
    • Michigan
      • Ann Arbor, Michigan, United States, 48109
        • University of Michigan
    • Ohio
      • Toledo, Ohio, United States, 43606
        • University of Toledo - Health Campus

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

30 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Type 2 diabetes
  • 30-75 years of age
  • less than 1% fluctuation in HbA1c over 3 months
  • women must be on contraception
  • HbA1c 6-9%
  • willingness to sign approved consent form

Exclusion Criteria:

  • Nursing mothers, pregnant women (excluded by a negative pregnancy test).
  • Subjects requiring insulin therapy (>20 units/day) and can not be converted to sulfonylurea therapy without loss of diabetes control.
  • Patients with a history of drug or alcohol dependence in the last 5 years
  • Patients with pre-existing cardiovascular disease including coronary artery disease, heart attack, heart failure, abnormal heart rhythms, structural abnormalities and valve disease, peripheral vascular disease and uncontrolled high blood pressure.
  • Patients with a history of high cholesterol requiring therapy.
  • Patients with severe systemic disease other than diabetes which has as a recognized complication neuropathy
  • Patients currently taking drugs which act on the blood vessels (for example for hypertension)
  • Patients taking antidepressants, or other drugs or medications known to interfere with the uptake or metabolism of catecholamines (stress hormones)
  • Patients with poor renal function or have significant liver disease
  • Patients with a history of previous kidney, pancreas or cardiac transplantation.
  • Patients with a history of "severe hypoglycemia" which required the assistance of a third party or ketoacidosis requiring hospital admission within the last 3 months.
  • Patients with lung disease for example resulting from chronic obstructive airways disease.
  • Patients with abnormal thyroid function tests.
  • Patients having taken other systemic investigational drugs (especially for neuropathy) or initiating a new or experimental insulin delivery device within 3 months of starting the study.
  • Patients with a history of allergic reactions to multiple drugs or biological products.
  • Obese patients (BMI greater than 35).
  • Patients who refuse to sign the informed consent.

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: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Drug: Rosiglitazone
oral 8 mg/once daily for 6 months
Experimental: 2
Drug: Glyburide
20 mg/ once daily for 6 months

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Myocardial blood flow regulation
Time Frame: 6 months intervention
6 months intervention

Secondary Outcome Measures

Outcome Measure
Time Frame
biomarkers of oxidative/nitrosative stress
Time Frame: 6 month intervention
6 month intervention

Collaborators and Investigators

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

Sponsor

University of Michigan

Collaborators

GlaxoSmithKline

Investigators

  • Principal Investigator: Martin Stevens, MD, PhD, University of Michigan

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

February 1, 2002

Study Completion (Actual)

November 1, 2006

Study Registration Dates

First Submitted

October 24, 2007

First Submitted That Met QC Criteria

October 24, 2007

First Posted (Estimate)

October 26, 2007

Study Record Updates

Last Update Posted (Estimate)

November 9, 2007

Last Update Submitted That Met QC Criteria

November 8, 2007

Last Verified

October 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SKB 276

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 Type 2 Diabetes

Clinical Trials on Rosiglitazone

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Denmark

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe