Evaluation of Cardiovascular Effects of Smoking Cessation in HIV Patients

Study Overview
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Brief Summary
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We will conduct a sub-study of An Innovative Telephone Intervention for HIV+ Smokers, (NCT00502827) conducted by Drs. Gritz, Vidrine, and others. This is a randomized, prospective trial that will evaluate a cellular phone delivered counseling intervention versus standard of care for smoking cessation. In our sub-study, we will evaluate rates of progression in atherosclerosis in HIV/AIDS patients who quit smoking versus those who continue smoking by measuring carotid intima-media thickness(CIMT) and biomarkers of atherosclerosis at time point baseline, 1 year, and 3 year. The biomarkers measured include high-sensitivity Creactive protein, homocysteine, and IL-6. We will also evaluate rates of progression of CIMT in those who quit smoking versus those who continue smoking, based on race, sex, state of HIV disease, comorbid diseases, and lipid profile.

Detailed Description
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HIV/AIDS patients may have an increased risk of myocardial infarction. Traditional risk factors for coronary artery disease, including cigarette smoking, likely play a large role. The prevalence of smoking in the HIV patient population is higher than the general population. We will conduct a sub-study of An Innovative Telephone Intervention for HIV+ Smokers, (NCT00502827) conducted by Drs. Gritz, Vidrine, and others. This is a randomized prospective trial that will evaluate a cellular phone delivered counseling intervention versus standard of care for smoking cessation. In our sub-study, we will evaluate rates of progression in atherosclerosis in HIV/AIDS patients who quit smoking versus those who continue smoking by measuring carotid intima-media thickness(CIMT) and biomarkers of atherosclerosis at time point baseline, 1 year, and 3 year. The biomarkers measured include high-sensitivity Creactive protein, homocysteine, and IL-6. We will also evaluate rates of progression of CIMT in those who quit smoking versus those who continue smoking based on race, sex, state of HIV disease, comorbid diseases and lipid profile. The central hypothesis is that smoking cessation win slow the atherosclerosis progression in HIV patients. A successful behavioral intervention is being evaluated in the parent study. The goal of this sub-study is to assess the effect of a modifiable coronary artery disease risk factor, smoking, in HIV/AIDS patients through this collaboration of cardiovascular expertise and metrics.

Official Title
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Evaluation of Cardiovascular Effects of Smoking Cessation in HIV Infected Patients

Conditions
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HIV Infections, Smokers

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients who meet eligibility criteria for An innovative telephone intervention for HIV-positive smokers. Patients who consent to the sub-study. Patients who are able to participate in the study for 3 years. Exclusion Criteria: Patients with a history of coronary bypass surgery, percutaneous coronary intervention, valve replacement, pacemaker or defibrillator implantation.

Ages Eligible for Study
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Minimum Age: 16 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| HIV positive smokers<br>50 HIV infected patients who enroll in a parent protocol to quit smoking and elect to participate in this sub-study. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The primary endpoint will compare change in mean maximum carotid IMT over the course of the study between HIV patients who quit smoking and those that continue to smoke. |  | 3 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The secondary endpoint will evaluate change in mean carotid IMT. |  | 3 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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HIV infected smokers, HIV