This application pertains to RFA MH-01-007, Neurocognitive, neuroimaging, and neuropsychiatric correlates of BEIV infection. HIV-associated dementia (HAD) is a common and disabling complication of IUV infection that occurs in 10-20 percent of patients with AIDS. Although HAD is associated with E[rV viral load, and inversely associated with CD4 count, the correlation is not high, and many patients with high viral loads and low CD4 counts do not become demented. Conversely, a substantial number of patients with normalized CD4 counts as a result of HAART therapy become demented. Over the last decade much experimental and clinical evidence has accumulated supporting the hypothesis that a virary driven induction of inflammatory mediators such as cytokines, chemokines, nitric oxide, and free radicals is responsible for neurodegeneration in HAD. Recent progress in the Human Genome Project has identified polymorphisms genes involved in mediating inflammatory reactions in the brain, which have been proposed on the basis of experimental observations to play a role in HAD. Our hypothesis is that inheritance of certain alleles of these polymorphic candidate genes is associated with the development of HAD. This proposal will study polymorphisms in seven candidate genes: APOE4, ILIA*2, IL-1B*2, ILIRN*2, TNF-2 A2M*2, and GSTM3*B. These polymorphisms have been chosen based on their linkage to other neurologic diseases believed to share pathophysiologic features with HAD, and a biologic plausibility of a role in neurodegeneration. Two populations of patients will be studied (1) A group of 231 patients who have died of AIDS, and were extensively characterized neuropathologically by one of the collaborators (Dr. Bums) and (2) A prospectively collected group of patients with late-stage HIV disease whose clinical, virological, and immunological profiles have been determined and tissue banked in the National NeuroAlDS Tissue Consortium (NNTC). These studies, is if successful, will provide genetic evidence for a role of specific inflammatory mediators in HAD, and may identify novel targets for therapeutic intervention.

Agency
National Institute of Health (NIH)
Institute
National Institute of Mental Health (NIMH)
Type
Small Research Grants (R03)
Project #
1R03MH064889-01
Application #
6439393
Study Section
Special Emphasis Panel (ZMH1-BRB-S (01))
Program Officer
Joseph, Jeymohan
Project Start
2001-09-30
Project End
2003-08-31
Budget Start
2001-09-30
Budget End
2002-08-31
Support Year
1
Fiscal Year
2001
Total Cost
$78,000
Indirect Cost
Name
University of Texas Sw Medical Center Dallas
Department
Neurology
Type
Schools of Medicine
DUNS #
City
Dallas
State
TX
Country
United States
Zip Code
75390
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