Inflammation, Viral Replication, and Atherosclerosis in Treated HIV Infection

Sponsor
University of California, San Francisco (Other)
Overall Status
Completed
CT.gov ID
NCT01519141
Collaborator
National Heart, Lung, and Blood Institute (NHLBI) (NIH)
579
1
210.1
2.8

Study Details

Study Description

Brief Summary

This is a longitudinal observational study of HIV-infected patients and HIV-negative control patients that is being conducted to learn more about immunologic factors, inflammation, and cardiovascular risk in patients with HIV infection or in patients with autoimmune disease. The investigators plan to obtain measurement of carotid artery intima media thickness (IMT) using high resolution ultrasound as a noninvasive means for tracking atherosclerotic progression. The investigators will also measure lipid and lipoprotein levels, inflammatory markers, markers of Cytomegalovirus (CMV) infection, thrombotic markers, atherogenic lipoproteins, and markers of immune function. Immunophenotyping will be performed on freshly collected blood and analyzed by flow cytometry to identify activated T-cells, T-cell turnover, proportions of T-cells, and CMV function. HIV-infected patients will have CD4 count and HIV viral load measured in addition. Patients will undergo detailed clinical history including HIV disease, specific HIV medications, comorbid conditions, and health related behaviors. Physical exam and measurements will be obtained to assess for the presence of lipodystrophy. Patients will undergo study visits for ultrasound, blood draw, and interview at 4-12 month intervals for the next 3 years.

Patients will also go assessment of endothelial function, endothelial progenitor cells, arterial stiffness as measured using pulse wave tonometry.

To demonstrate the feasibility of a larger scale investigation of cardiac arrhythmia in HIV positive and negative patients with cardiac disease, the investigators will use 48-hour Holter monitor surveillance to monitor HIV-infected and uninfected patients with a history of myocardial infarction, systolic left ventricular dysfunction, and/or pulmonary artery hypertension for the presence of cardiac arrhythmia.

The FDG PET scan (18F-fluorodeoxyglucose positron emission tomography-computed tomography) will be used to detect and quantify inflammation in the body.

Condition or Disease Intervention/Treatment Phase

    Detailed Description

    This proposal is currently approved by CHR (#H9577-18534-03C, exp date 3/26/04); the purpose of this new application is to split the currently approved protocol into a separate protocol with a separate PI. Data collected and patients seen under the previously approved protocol will be carried over into this new separate protocol. This is a longitudinal observational study of HIV-infected patients and HIV-negative control patients, and individuals with autoimmune diseases. We plan to obtain measurement of carotid artery intima media thickness (IMT) using high resolution ultrasound as a noninvasive means for tracking atherosclerotic progression. In addition, patients will undergo ct scan for coronary calcium and single slice abdominal ct scan to assess visceral fat. We will also measure lipid and lipoprotein levels, inflammatory markers, markers of CMV infection, thrombotic markers, atherogenic lipoproteins, and markers of immune function. Immunophenotyping will be performed on freshly collected blood and analyzed by flow cytometry to identify activated T cells,T cell turnover, proportions of T cells, and CMV function. HIV-infected patients will have CD4 count and HIV viral load measured in addition. Patients will undergo detailed clinical history including HIV disease, specific HIV medications, comorbid conditions, and health related behaviours. Physical exam and measurements will be obtained to assess for the presence of lipodystrophy. Patients will undergo study visits for ultrasound, blood draw, and interview at 4-12 month intervals for the next 3 years. Patients will also go assessment of endothelial function, endothelial progenitor cells, arterial stiffness as measured using pulse wave tonometry. In patients with detectable calcium on CT scan, they will be given the option of obtaining CT angiography. Patients will also undergo testing for peripheral arterial disease using ankle brachial index testing and exercise treadmill testing.

    Study Design

    Study Type:
    Observational
    Actual Enrollment :
    579 participants
    Observational Model:
    Cohort
    Time Perspective:
    Prospective
    Official Title:
    Immunologic and Inflammatory Factors and Cardiovascular Risk in Patients With HIV Infection or Autoimmune Diseases
    Study Start Date :
    Jul 1, 2003
    Actual Primary Completion Date :
    Jan 1, 2021
    Actual Study Completion Date :
    Jan 1, 2021

    Arms and Interventions

    Arm Intervention/Treatment
    HIV-negative controls

    HIV-negative individuals

    HIV-infected patients

    HIV-infected patients who are on a stable antiretroviral drug regimen for at least a year; all plasma HIV RNA levels within the past year must be below conventional levels of detection (< 50 copies RNA/mL).

    Outcome Measures

    Primary Outcome Measures

    1. carotid intima-media thickness [2 years]

      Increased carotid intima-media thickness (mm)

    2. brachial artery flow-mediated dilatation [2 years]

      decreased brachial artery flow-mediated dilatation (%)

    3. D-dimer [2 years]

      Increased D-dimer levels (mcg/mL)

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years to 65 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    Yes
    Inclusion Criteria:
    • Stable antiretroviral therapy for at least 12 months, and have no immediate plans to alter therapy.

    • All plasma HIV RNA levels within the past year must be below conventional levels of detection (< 50 copies RNA/mL), although isolated single values > 50 but < 1000 copies will be allowed if they were preceded and followed by undetectable viral load determinations.

    • Ability to provide reliable history of HIV medications or has received the majority of medical care from San Francisco General Hospital with available records of medical treatment

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 University of California San Francisco, San Francisco General Hospital San Francisco California United States 94110

    Sponsors and Collaborators

    • University of California, San Francisco
    • National Heart, Lung, and Blood Institute (NHLBI)

    Investigators

    • Principal Investigator: Priscilla Hsue, MD, University of California, San Francisco

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    University of California, San Francisco
    ClinicalTrials.gov Identifier:
    NCT01519141
    Other Study ID Numbers:
    • R01HL095130
    • 5R01HL095130
    First Posted:
    Jan 26, 2012
    Last Update Posted:
    Nov 10, 2021
    Last Verified:
    Nov 1, 2021
    Keywords provided by University of California, San Francisco
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Nov 10, 2021