Obesity Clinical Trial - Diet, Exercise and/or Rosiglitazone for

Status Completed

Clinical Trial Summary

The purpose of this study is to determine if, in men and women with excess abdominal fat and insulin resistance, people with HIV infection respond differently than people without HIV to interventions that typically improve body fat distribution and insulin resistance. The specific interventions are:

1. Diet + exercise program.

2. Rosiglitazone treatment.

3. A combination treatment of diet + exercise program and rosiglitazone.

Clinical Trial Description

A constellation of nutritional alterations in HIV-infected patients receiving highly active antiretroviral therapies (HAART), including body fat redistribution with subcutaneous adipose tissue (SAT) wasting and visceral adipose tissue (VAT) accumulation, hyperlipidemia, and insulin resistance (IR) has been described. There is a major concern that these developments will be associated with adverse clinical outcomes related to atherosclerosis, as suggested by several case reports (Henry 1998, Behrens 1998, Gallet 1998, Vittecoq 1998). Although there are well documented associations among body fat distribution, insulin resistance, and adverse health outcomes, especially accelerated atherosclerosis, in non-HIV infected individuals, it is unclear if the relationships are affected by HIV infection, or if they reflect the same outcomes. This information is important, since understanding the interrelationships between body fat distribution and metabolism may guide the development of treatment strategies.

The specific hypotheses to be tested are:

1. HIV infection does not affect the relative reductions in visceral (VAT) and subcutaneous adipose tissue (SAT) resulting from diet + exercise, but decreases the effect of this therapy on insulin resistance.

2. HIV infection decreases the changes in insulin resistance and body composition (increase in SAT and decrease in VAT) expected with rosiglitazone.

3. The combination treatment of diet+exercise and rosiglitazone will reduce VAT to a greater extent than rosiglitazone alone, and will improve insulin resistance to greater extent than diet and exercise alone, however these effects will be blunted in HIV-infected subjects. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00264251
Study type	Interventional
Source	St. Luke's-Roosevelt Hospital Center
Contact
Status	Completed
Phase	N/A
Start date	July 2005
Completion date	August 2007

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Diet, Exercise and/or Rosiglitazone for HIV-Associated Insulin Resistance

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms