Featured Research

from universities, journals, and other organizations

Recreational use of HIV antiretroviral drug linked to its psychoactivity

Date:
April 21, 2013
Source:
Federation of American Societies for Experimental Biology
Summary:
More than 1 in 270 people in the US are living with HIV and every 9.5 minutes someone is else is infected. The economic cost estimates associated with HIV/AIDS exceed 36 billion dollars a year. The development of effective drug treatments have allowed people with HIV to live longer with federal health officials now predicting that by 2015 one-half of the population with HIV in the US will be older than 50.

More than 1 in 270 people in the US are living with HIV and every 9.5 minutes someone is else is infected. The economic cost estimates associated with HIV/AIDS exceed 36 billion dollars a year. The development of effective drug treatments have allowed people with HIV to live longer with federal health officials now predicting that by 2015 one-half of the population with HIV in the US will be older than 50.

Efavirenz (tradenames: Sustiva®, Stocrin®) is an antiretroviral (ARV) drug commonly used to treat HIV. Its popularity as a medication, alone or more commonly in combination with other HIV medications (tradename: Atripla®), is due to its superior effectiveness in suppressing replication of the virus that causes AIDS. Though highly effective, a standard dose of efavirenz is known to carry a risk of side effects that include adverse neuropsychiatric complications such as depression, anxiety, sleep disturbances, impaired concentration, aggressive behavior, night terrors, hallucinations, paranoia, psychosis and delusions. However the question remains as to why these side effects occur. Recent anecdotal reports of the recreational use of efavirenz provided some clues.

Dr. John A. Schetz at the University of North Texas Health Science Center in Fort Worth, Texas, utilizes a mechanistic approach to solving problems and answering questions of importance to society. As a neuropharmacologist working to discover and develop new drugs for the treatment of neurological and psychiatric disorders, his experience and intuition helped solve the mystery as to why efavirenz, when taken as prescribed, can cause adverse psychiatric events, as well as why there are reports of efavirenz being diverted for recreational use. The later practice could encourage the emergence of ARV-resistant HIV strains by educating the HIV virus.

Dr. Schetz's interest was sparked by a network news report covering the topic of ARV abuse in South Africa. The report described how pills used to treat HIV were being crushed and the powder smoked for its psychoactive effects. Though there were no scientific studies on the topic, Dr. Schetz was aware of studies describing neuropsychiatric side effects in HIV patients taking the medication as prescribed, as well as case reports of sudden onset adverse psychiatric events in patients with no history of mental illness. However, research study results suggested that the later patient population were genetically predisposed because they have less effective variants of the enzyme primarily responsible for metabolizing efavirenz, leading to much slower than expected breakdown of efavirenz, and consequently higher than expected levels of drug in the body. Dr. Schetz initiated his investigation with molecular profiling of the receptor pharmacology of efavirenz which lead to the pinpointing of interactions with multiple established sites of action for other known drugs of abuse. He and a number of his colleagues worked together to achieve a pre-clinical understanding of the psychoactivity induced by efavirenz that may help explain reports both of its adverse neuropsychiatric side effects in HIV patients and of its diversion for recreational use.

Dr. Schetz's work is the first ever study of the mechanisms of efavirenz's psychopharmacology and these new findings will help stimulate interest to support additional research related to the mechanism of ARV side effects and abuse potential. This would help translate the pre-clinical findings into preventative measures addressing HIV medication-induced adverse side effects in patients living with HIV. Additionally, preventative strategies would improve patient adherence and quality of life, reduce the potential risk for the emergence of HIV drug resistant strains, and could prevent diversion of HIV medication for illicit use."

His findings will be presented April 21, 2012 during Experimental Biology 2013 in Boston, MA.


Story Source:

The above story is based on materials provided by Federation of American Societies for Experimental Biology. Note: Materials may be edited for content and length.


Cite This Page:

Federation of American Societies for Experimental Biology. "Recreational use of HIV antiretroviral drug linked to its psychoactivity." ScienceDaily. ScienceDaily, 21 April 2013. <www.sciencedaily.com/releases/2013/04/130421153837.htm>.
Federation of American Societies for Experimental Biology. (2013, April 21). Recreational use of HIV antiretroviral drug linked to its psychoactivity. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2013/04/130421153837.htm
Federation of American Societies for Experimental Biology. "Recreational use of HIV antiretroviral drug linked to its psychoactivity." ScienceDaily. www.sciencedaily.com/releases/2013/04/130421153837.htm (accessed October 20, 2014).

Share This



More Health & Medicine News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How Nigeria Beat Its Ebola Outbreak

How Nigeria Beat Its Ebola Outbreak

Newsy (Oct. 20, 2014) — The World Health Organization has declared Nigeria free of Ebola. Health experts credit a bit of luck and the government's initial response. Video provided by Newsy
Powered by NewsLook.com
Another Study Suggests Viagra Is Good For The Heart

Another Study Suggests Viagra Is Good For The Heart

Newsy (Oct. 20, 2014) — An ingredient in erectile-dysfunction medications such as Viagra could improve heart function. Perhaps not surprising, given Viagra's history. Video provided by Newsy
Powered by NewsLook.com
Ebola Worries End for Dozens on U.S. Watch Lists

Ebola Worries End for Dozens on U.S. Watch Lists

Reuters - US Online Video (Oct. 20, 2014) — Forty-three people who had contact with Thomas Eric Duncan, the first person diagnosed with Ebola in the U.S., were cleared overnight of twice-daily monitoring after 21 days of showing no symptoms. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Fauci: Ebola Protocols to Focus on Training

Fauci: Ebola Protocols to Focus on Training

AP (Oct. 20, 2014) — Dr. Anthony Fauci, head of the National Institute of Allergy and Infectious Diseases, says he expects revised CDC protocols on Ebola to focus on training, observation and ensuring health care workers are more protected. (Oct. 20) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins