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Author Topic: Study Shows Drug can Purge Dormant HIV  (Read 3404 times)

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Offline JohnD99

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Study Shows Drug can Purge Dormant HIV
« on: July 25, 2012, 10:25:41 PM »
July 25, 2012:
http://www.sciencedaily.com/releases/2012/07/120725132204.htm

Pioneering Study Shows Drug Can Purge Dormant HIV

ScienceDaily (July 25, 2012) Researchers from the University of North Carolina at Chapel Hill have published pioneering research showing that a drug used to treat certain types of lymphoma was able to dislodge hidden virus in patients receiving treatment for HIV.

The existence of persistent reservoirs of dormant HIV in the immune system that are not attacked by anti-AIDS drugs is believed to be a major reason why infection reemerges once patients stop taking their medication. The disruption and clearance of these reservoirs is critical to finding a cure for AIDS.

The study was published in the July 25 issue of the scientific journal, Nature.

Researchers at UNC, working in collaboration with scientists from the Harvard School of Public Health, National Cancer Institute, Merck, and the University of California at San Diego, undertook a series of experiments designed to evaluate the potential of the drug vorinostat, a deacetylase inhibitor that is used to treat some types of lymphoma, to activate and disrupt the dormant virus.

Initially, laboratory experiments measuring active HIV levels in CD4+ T cells, which are specialized white blood cells that the virus uses to replicate, showed that vorinostat unmasked the hidden virus in these cells. Subsequently, vorinostat was administered to eight HIV-infected men who were medically stable on antiretroviral therapy and the levels of active HIV virus were measured and compared to the levels prior to administration.

Those patients receiving vorinostat showed an average 4.5-fold increase in the levels of HIV RNA in CD4+ T cells, evidence that the virus was being unmasked. This is the first published study to show the potential for deacetylase inhibitors to attack latency within dormant virus pools in a translational clinical study.

"This work provides compelling evidence for a new strategy to directly attack and eradicate latent HIV infection," said David Margolis, MD, professor of medicine, microbiology and immunology, and epidemiology at the University of North Carolina at Chapel Hill. Targeting latency is the first step on a path that may lead to a cure.

"Long-term, widespread use of antiretrovirals has personal and public health consequences, including side effects, financial costs, and community resistance," said Margolis, who led the study. "We must seek other ways to end the epidemic, and this research provides new hope for a strategy to eradicate HIV completely from the body."

Early results of this study were first presented and reported in March 2012 at the Conference on Retroviruses and Opportunistic Infections in Seattle, Washington.

The research conducted is part of a UNC-led consortium, the Collaboratory of AIDS Researchers for Eradication (CARE), funded by the National Institute of Allergy and Infectious Diseases. The consortium is administered by the North Carolina Translational and Clinical Sciences (NC TraCS) Institute at UNC, one of 60 medical research institutions in the US working to improve biomedical research through the NIH Clinical and Translational Science Awards (CTSA) program.

Offline hopeisvague

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Re: Study Shows Drug can Purge Dormant HIV
« Reply #1 on: July 27, 2012, 02:39:07 PM »
This reminds me of another anti-alcoholism drug: disulfiram which was brought under scrutiny of its potential to purge HIV from the reservoirs... How is that now?

Vorinostat is administered intravenously while disulfiram is an oral tablet. If that works, (or even just partially works), I would definitely grab some from the pharmacy... as its said to be "well tolerated" 
201206 351/95000 Started I/T

Offline Rockin

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Re: Study Shows Drug can Purge Dormant HIV
« Reply #2 on: July 27, 2012, 03:14:13 PM »
Great news. Here's hoping this research leads to some change in HAART.

Offline Matts

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Re: Study Shows Drug can Purge Dormant HIV
« Reply #3 on: August 01, 2012, 05:21:28 PM »
The antabuse Disulfiram doesn't work as a study shows;
http://www.aidsbeacon.com/news/2012/03/23/disulfiram-may-not-significantly-reduce-latent-hiv-aids-reservoirs-in-people-with-hiv-croi-2012/

At least no need for skipping the alcohol.
tivicay/kivexa

Offline Common_ground

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  • Posts: 288
Re: Study Shows Drug can Purge Dormant HIV
« Reply #4 on: August 01, 2012, 06:21:05 PM »
This study was very weak. Only 14 subjects, 2 weeks and no variation in dosage?

2011 May - Neg.
2012 June CD4:205, 16% VL:2676 Start Truvada/Stocrin
2012 July  CD4:234, 18% VL:88
2012 Sep  CD4:238, 17% VL:UD
2013 Feb  CD4:257, 24% VL:UD -viramune/truvada
2013 May CD4:276, 26% VL:UD

Offline Matts

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Re: Study Shows Drug can Purge Dormant HIV
« Reply #5 on: August 01, 2012, 07:04:13 PM »
You are right, 14 days are a very short period of time.
i'm sure we will know more soon if it works better for a longer period. Disulfiram 500mg cost 30 Cent a day; but can it be that esay? i cant imagine. We will see:)
tivicay/kivexa

Offline Common_ground

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  • Posts: 288
Re: Study Shows Drug can Purge Dormant HIV
« Reply #6 on: August 01, 2012, 07:25:14 PM »
Im a bit tempted to try it myself :)
Would help me stay off the booze at the same time haha  :P
2011 May - Neg.
2012 June CD4:205, 16% VL:2676 Start Truvada/Stocrin
2012 July  CD4:234, 18% VL:88
2012 Sep  CD4:238, 17% VL:UD
2013 Feb  CD4:257, 24% VL:UD -viramune/truvada
2013 May CD4:276, 26% VL:UD

Offline Skydrake

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  • Posts: 41
Re: Study Shows Drug can Purge Dormant HIV
« Reply #7 on: August 03, 2012, 12:38:04 PM »
You are right, 14 days are a very short period of time.
i'm sure we will know more soon if it works better for a longer period. Disulfiram 500mg cost 30 Cent a day; but can it be that esay? i cant imagine. We will see:)

Instead it is better to use Vorinostat only for short periods of time. It is used as anti-cancer drug and it has severe collateral effects (thrombocytopenia, venous thrombosis, pulmonary embolism, anaemia).
« Last Edit: August 03, 2012, 12:42:19 PM by Skydrake »

Offline Matts

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  • Posts: 206
Re: Study Shows Drug can Purge Dormant HIV
« Reply #8 on: August 03, 2012, 05:45:35 PM »
I have googled a bit about Vorinostat; there are some american and german trials with HDAC-Inhibitors. The scientists seem to have some good hopes. The first results are expected in 2015,2016 as i read.
tivicay/kivexa

Offline leftalone

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  • Posts: 9
Re: Study Shows Drug can Purge Dormant HIV
« Reply #9 on: August 03, 2012, 11:32:08 PM »
Well for the first time i guess i am feeling actually good!! This seems to be promising but should not be lost in future like other researches....Now we will party on viruses..lolzz
Cd4 612 , VL-106042 @19% as on 08/28/2012

 


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