Featured Research

from universities, journals, and other organizations

Wild Gorillas Carriers Of A SIV Virus Close To The AIDS Virus

Date:
November 22, 2006
Source:
Institut de Recherche Pour le Développement
Summary:
A recent article in Nature reports the discovery of gorillas living in the wild in Central Africa infected with an HIV-1 related virus, called SIVgor, genetically close to an HIV-1 variant called group O. This discovery ask the crucial question on the source and route for infection of the gorillas. It broadens substantially the scope of research on the ability of these viruses to cross over from one species to another.

In 2005, 40.3 million people in the world, including 25.8 million in Sub-Saharan Africa, were living with HIV. The question of the origin of HIV-1, responsible for the AIDS pandemic, has been stimulating the scientific community for many years.

Some months ago, the team of Martine Peeters, director of research at IRD, and Eric Delaporte, director of the mixed research unit UMR 145 jointly involving the IRD and the University of Montpellier 1, showed the chimpanzee subspecies living in the Congo Basin (2) to be the reservoir of HIV-1 virus group M, the source of the world pandemic and that of another, very rare variant, HIV-1 group N. However, the reservoir of the third HIV-1 group, group O which infects humans (3), remained unidentified up to now.

This team announces, in an article in the journal Nature, the discovery of a simian immunodeficiency virus (SIV) infection in wild gorillas. Samples of faeces collected from different communities of gorillas found in the remotest areas of the Cameroon tropical forest were found to contain antibodies against this virus, called SIVgor. The genetic characteristics of the virus were present again in three gorillas living more than 400 km apart. Phylogenetic analysis of SIVgor showed it to be related to HIV-1 group O found in humans, essentially in Cameroon and in neighbouring countries.

This discovery of an HIV-1 related virus in wild gorillas does not, however, call into question the fact that chimpanzees are the primary reservoir of SIV/HIV viruses that crop up again in gorillas and in humans. As Martine Peeters of the IRD says, "the viruses of groups M and N are, very clearly, the consequence of inter-species transmission from chimpanzee to humans, whereas the origin of HIV-1 group O is less apparent. It cannot be excluded that chimpanzees infected by HIV-1 group O might have contaminated humans and the gorilla independently, or that the gorilla, having been contaminated by the chimpanzee, might have contaminated humans".

This work thus opens up a Pandora's box on the questions and speculations concerning the ability of these viruses to cross over from one species to another. The main challenges facing these teams for future work will be determination of the prevalence, the geographical distribution and biology of SIV infections in these great apes, not forgetting the question of how the gorillas were contaminated. This last point remains a mystery,considered as rare.


Story Source:

The above story is based on materials provided by Institut de Recherche Pour le Développement. Note: Materials may be edited for content and length.


Cite This Page:

Institut de Recherche Pour le Développement. "Wild Gorillas Carriers Of A SIV Virus Close To The AIDS Virus." ScienceDaily. ScienceDaily, 22 November 2006. <www.sciencedaily.com/releases/2006/11/061113175954.htm>.
Institut de Recherche Pour le Développement. (2006, November 22). Wild Gorillas Carriers Of A SIV Virus Close To The AIDS Virus. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2006/11/061113175954.htm
Institut de Recherche Pour le Développement. "Wild Gorillas Carriers Of A SIV Virus Close To The AIDS Virus." ScienceDaily. www.sciencedaily.com/releases/2006/11/061113175954.htm (accessed July 30, 2014).

Share This




More Health & Medicine News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Generics Eat Into Pfizer's Sales

Generics Eat Into Pfizer's Sales

Reuters - Business Video Online (July 29, 2014) — Pfizer, the world's largest drug maker, cut full-year revenue forecasts because generics could cut into sales of its anti-arthritis drug, Celebrex. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Nigeria Ups Ebola Stakes on 1st Death

Nigeria Ups Ebola Stakes on 1st Death

Reuters - Business Video Online (July 29, 2014) — Nigerian authorities have shut and quarantined a Lagos hospital where a Liberian man died of the Ebola virus, the first recorded case of the highly-infectious disease in Africa's most populous economy. David Pollard reports Video provided by Reuters
Powered by NewsLook.com
Running 5 Minutes A Day Might Add Years To Your Life

Running 5 Minutes A Day Might Add Years To Your Life

Newsy (July 29, 2014) — According to a new study, just five minutes of running or jogging a day could add years to your life. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Poses Little Threat To U.S.: CDC

Ebola Outbreak Poses Little Threat To U.S.: CDC

Newsy (July 29, 2014) — The Ebola outbreak in West Africa poses little threat to Americans, according to officials with the Centers for Disease Control and Prevention. Video provided by Newsy
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:
from the past week

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