Leaders across the field of HIV, the results of the first human trial of efficacy of pre-exposure prophylaxis (PREP) has welcomed the data, iPREX that individual at high risk of HIV infection, who took one tablet a day with two reports showed widespread anti-HIV drugs tenofovir and emtricitabine (FTC / TDF), has an average of 43.8% less HIV infections than those who received placebo. The results were released Tuesday morning.
The study published in The New England Journal of Medicine is the first evidence that this new method of HIV prevention, pre-exposure prophylaxis for HIV in people reduces called PREP. "The results of today's announcement of the first study of pre-exposure prophylaxis for oral (PREP) for the prevention of HIV between people who study iPREX is a very important addition to what is 15 more months in the promising Field research on the prevention of HIV since the epidemic began 27 years ago, "said Dr. Alan Bernstein, executive director, said the Global HIV Vaccine Enterprise.
The study comes on the heels iPREX promising studies on HIV prevention.
In July, there was the news that the use of an anti-HIV every day to reduce the risk of HIV infection by 43.8 percent followed closely the announcement of the first successful test of a topical microbicide to prevent HIV infection between women (capris, July 2010) and the first demonstration of the effectiveness of a therapeutic vaccine against HIV (RV144, September 2009).
Together, these three developments herald a new era of exciting and dynamic research for the prevention of HIV, which bring us closer to developing safe and effective biomedical interventions for HIV acquisition.
Dr. Larry Corey, principal investigator of the HIV Vaccine Trials Network (HVTN), the Fred Hutchinson Cancer Research Center in Seattle, Washington said it was preventing the third positive test results last year, and good news. We are looking for prevention safe, efficient, sustainable and accessible around the world committed to HIV infection. Vaccines are a public health strategy for virus epidemics, particularly in regions with limited resources to stop.
He said it was well designed and conducted a study which showed that HIV can be this type of biomedical intervention should be avoided.
Pre-exposure prophylaxis (PREP) is a nice addition to the package of strategies for the prevention of HIV. The details of these results will help health professionals to develop comprehensive plans to prevent patients with s' identified as high risk for HIV.
The field is looking forward to the results of other studies to evaluate the effectiveness of pre-exposure to other people, learn more about the willingness of people to use drugs on a long-term, and study the safety and efficacy of PREP with different therapies and / or dates of ownership.
Future studies of PREP and other methods of HIV prevention should address how to extend the duration of the effects of prevention of the epidemic on the effects of population base.
"This was an important year for research on HIV prevention," said Yasmin Halima, director of the Global Campaign for Microbicides. "Now we have been proofing of concept that both topical and oral gel pills may work for HIV prevention between those most at risk."
Dr. Bernstein said that the world must now make these exciting results to develop the study of HIV prevention into practicable tools for now.
He said three things: first, the new HIV prevention tools are more necessary than ever. UNAIDS announced today that 2.6 million people infected with HIV last year. Base on this trio of interesting results in the prevention of HIV, including announced today, is crucial if we want to bring this global epidemic under control.
Secondly, prevention remains the key combination of control and end of the day of this epidemic. The benefit of prevention PREP, today announced that, besides using other proven methods of HIV prevention like regular HIV testing, counseling practice safe sex and condom use has been reached. To develop in the future as an option for HIV prevention, the best approaches combine behavioral approaches, vaccines, antibiotics, pre-exposure prophylaxis and other methods to be developed. Until we have a perfect tool for the prevention of HIV, combination approaches are essential to reduce HIV infections.
He said the results announced today the results that vaccine and microbicides, the first being on a principle which is based in the heart of the work of the Global HIV Vaccine Enterprise - global cooperation.
"Only through collaboration between different scientific disciplines, national borders and among researchers, volunteers, supporters and founders of this story that hit the most suggestive of HIV prevention, he said.
Total of 2,499 people at high risk of HIV infection in iPREX study of six countries. All study participants received a complete set of services to prevent the risk of HIV infection during the study, including the reduction of HIV testing, intensive counseling safe sex, condoms and treatment and care of sexually transmitted diseases. Half of the study participants also received the pill PREP, while the other half received a placebo.
Overall, 64 HIV infections recorded in 1248 study participants who received a placebo, while 36 HIV infections among the 1,251 participants who received the study medication were included. The average reduction in the risk of HIV infection of 43.8% includes all study participants - even those who did not attend the pill every day consistently.
The study found that more protection iPREX PREP was between those who take the pill more frequently reported. Between the participants who had used the pill at 50% or more days, such as counting tablets and a bottle of self-report, the risk of HIV infection of 50.2% was measured (95% CI 17.9 to 69.7%, P = 0.006) among those who used the pill at 90% or more days, as determined by the same measures as the risk of infection pills PREP reduced from 72.8% (95% from 40.7 to 87.5%, P = 0.001).
While the pill, the measures, which are based on measurement reports of self-biased, the tests for the determination of the PREP drug in the blood of study participants - a reliable measure of the pill - also noted that participant are protected against HIV infection was probably under the study medication more regularly.
For a subgroup of study participants who received the active drug were detectable amounts of PREP the combination drug in the blood by 51% (22 of 43) of a group that HIV was negative, but only 9% (3 out of 34) of participants infected with HIV. Low or zero levels of drug at the root of all infections, those receiving active PREP, while those on the drug most frequently have a higher level of protection against HIV infection occurred.
"PREP iPREX shows that a significant protection against HIV, though it offers available with other prevention methods such as HIV testing, counseling, condom use and management of sexually transmitted infections," said Grant iPREX Protocol President Robert, MD, MPH of the Gladstone Institutes and the University of California at San Francisco.
"As with other prevention methods, the best protection is provided for constant use. I hope this has inspired the creation of adopting a renewed commitment to the community, industry and government, the spread of HIV."
IPREX This study is important, South Africa and the African continent. Unlikely that we will be able to treat our way through this epidemic. We need to find innovative ways to go, accessible and practical to stop the further transmission of HIV. To do this we need proven strategies that many individuals may be offered by many different sexual orientations, practices and risk profiles, so they are protected in a sustainable and significant.
IPREX gives us another form of evidence for all prevention programs to add. Although the representative of Cape contributed relatively fewer participants, we have a continent ravaged by the impact of HIV and each participant evaluated a lot for their courage, commitment and passion for the study and the cause. We look forward to following with the rest of the research team iPREX effective use of this modality in the prevention study and other experiments planned.
The study iPREX (Iniciativa prophylaxis Preexposicion Prexposure) or initiative is a double bind, placebo-controlled phase III, which began in 2007 after three years of community consultation. IPREX is the first efficacy trial of a man preparing for data transmission. The study was sponsored by iPREX U.S. National Institutes of Health (NIH), through a grant to the Gladstone Institute, a nonprofit independent research with the University of California at San Francisco affiliate. MORE iPREX the Bill provided, support & Melinda Gates Foundation.
A total of 2,499 men and transsexual women who have sex with men (MSM) at high risk of HIV infection in the study were iPREX at 11 locations in Brazil, Ecuador, Peru, South Africa, Thailand and the United States.
Other studies of pre-exposure prophylaxis are now men and heterosexual women, couples and HIV-injection drug users. Precautionary point iPREX researchers must continue these studies as the study's findings extrapolate iPREX not predict effects on populations of other PREP.
About 20,000 participants are already registered or could PREP studies around the world. PREP was previously shown to be very effective in animal studies.