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GW researcher studies the dangerous effects of cocaine on HIV patients
Date:3/21/2013

WASHINGTON (March 21, 2013) Cocaine, already a damaging drug for those with healthy immune systems, can be lethal for those living with human immunodeficiency virus (HIV). Mudit Tyagi, Ph.D., assistant professor of medicine at the George Washington University (GW) School of Medicine and Health Sciences (SMHS), has received two federally funded grants to study how dangerous this combination is in HIV patients.

Both grants are from the National Institute on Drug Abuse, a component institute of National Institutes of Health, which support research focusing on illicit drugs abuse. The first grant he received, titled "Cocaine Enhances HIV Replication by Inducing Transcriptionally Active Chromatin," is for $405,000 and the second grant, titled "Cocaine Induced Selective Epigenetic and Signaling Pathways Enhance HIV Replication," is for $317,000. These grants will allow Tyagi to investigate the impact of drug abuse on HIV gene expression, replication and transmission, especially in brain cells, as the brain is a primary target for both drugs and HIV.

"We are seeing new cases of HIV coming from the younger generation," said Tyagi. "And, unfortunately, the majority of these cases are coming from persons taking these illicit drugs."

Abusing drugs, such as cocaine, is known to modify both cellular epigenetics and signaling pathways, which in turn modulate the expression of several cellular genes. This has led researchers to believe that gene expression of integrated HIV proviruses are also influenced with this type of stimuli that eventually translates into enhanced HIV replication and transmission in drug addicted HIV patients. Cocaine, one of the most widely abused drugs in the United States, impairs both the normal functioning of brain cells and activates HIV gene expression in the central nervous system. As a result, HIV-infected individuals who abuse cocaine experience a more severe and rapid onset of NeuroAIDS than non-abusing individ
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Contact: Lisa Anderson
lisama2@gwu.edu
202-994-3121
George Washington University
Source:Eurekalert

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