Good bacteria that protects against HIV identified

Can bacteria keep the deadly Human Immunodeficiency Virus (HIV) at bay? Experts from the University of Texas Medical Branch at Galveston believe so. In an article written in the PLOS ONE journal, they have said that they have identified some good bacteria'' that could protect women from HIV infection and other sexually transmitted infections.

A press release put out online by the university said they had identified the good bacteria after growing vaginal skin cells outside the body and studying the way they interacted with "good and bad" bacteria.

"The health of the human vagina depends on a symbiotic/mutually beneficial relationship with "good" bacteria that live on its surface feeding on products produced by vaginal skin cells. These good bacteria, in turn, create a physical and chemical barrier to bad bacteria and viruses including HIV,'' said the release.

The research team, led by Richard Pyles, said they discovered that certain bacterial communities alter the way HIV infects and replicates. In their current studies, a bacterial community associated with a symptomatic condition called bacterial vaginosis substantially reduced the antiviral activity of one of the leading anti-HIV medicines. Conversely, vaginal surfaces occupied by healthy bacteria and treated with the antiviral produced significantly less HIV than those vaginal surfaces without bacteria treated with the same antiviral.

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