Thursday, December 27, 2018

New Study Looks at Link Between Smoking, HIV Treatments

Posted By on Thu, Dec 27, 2018 at 8:00 AM

click to enlarge Kumar - UNIVERSITY OF TENNESSEE HEALTH SCIENCE CENTER
  • University of Tennessee Health Science Center
  • Kumar

Smoking makes it harder for HIV-1 therapies to work, and a professor here won a $1.71 million grant this year to figure out why.

Santosh Kumar, associate professor of pharmaceutical sciences at the University of Tennessee Health Science Center (UTHSC), won the five-year grant from the National Institutes of Health in November. Kumar’s team will review the role of certain enzymes that enhance HIV-1 replication in smokers.

“Despite the success of antiretroviral therapy, effective treatment outcomes for people living with HIV-1 occur in only a third of the total population who receive treatment,” reads a statement from UTHSC. “While reduced adherence to antiretroviral therapy is an increasing concern, substance abuse, in particular smoking tobacco, is one of the major contributing factors for ineffective treatment outcomes.”

Kumar said his team’s studies suggest that the enzymes are induced by smoking tobacco and that it interrupts the metabolization of HIV therapies.

“Our ultimate goal is that once we know the target, what is causing this progression, we can develop a drug that inhibits the enzymes, either in the exosomes, the brain, or primary sources like the liver and lungs,” Kumar said.

The project would impact the treatment of HIV-1 patients who smoke by providing a new target for therapeutic interventions, and potential application of exosomes as therapeutic carriers in effectively treating these patients, UTHSC said.

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