Friday, January 25, 2013

HIV-Like Virus Arose in Primates Thousands and thousands of Ages Ago , Experts Say


THURSDAY, Jan. 24 (HealthDay Information ) -- HIV-like viruses have been present in primates for any place from 5 million to twelve million several years, according to a new analyze.

HIV, the virus that causes AIDS, began infiltrating the human inhabitants in the early 20th century.

The contemporary human species is approximated to be about 100,000 to a hundred and fifty,000 ages aged.

Past investigation advised that HIV-like viruses, called lentiviruses, had been existing in primates for only tens of 1000's of ages. But some scientists suspected that time frame to be significantly as well short.

In this review, scientists estimated the size of time that lentiviruses have been existing in primates by tracking evolutionary improvements in lentiviruses and in a primate immune system gene referred to as APOBEC3G.

The investigators discovered that a gene in lentiviruses that defends them from APOBEC3G has been evolving in tandem with the immune program gene. This obtaining enabled them to figure out how long lentiviruses have been existing in primates.

The conclusions, appearing online Jan. 24 in PLoS Pathogens, propose that HIV-like bacterial infections in primates are considerably mature than earlier thought, and ensure that HIV-like viruses in a variety of monkey species nowadays are the descendants of historical viruses in primates that have shaped how the immune system fights bacterial infections.

" A lot more than 40 non-human primate species in sub-Saharan Africa are contaminated with strains of HIV- linked viruses," examine author Michael Emerman, a virologist at the Fred Hutchinson Cancer Investigation Institute, explained in a journal news launch. " Due to the fact some of these viruses may have the potential to infect humans as nicely, it is important to know their origins."


Via: HIV-Like Virus Arose in Primates Millions of Years Ago, Scientists Say

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