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Mon Jun 27, 10:39 am ET
http://old.news.yahoo.com/s/nm/20110627/hl_nm/us_aids_drugs_ageing
LONDON (Reuters) – A class of generic AIDS drugs often used to treat HIV in Africa and other poor regions can cause premature aging and lead to age-related illnesses such as heart disease and dementia, scientists said on Sunday.
In a study in the journal Nature Genetics, British researchers found that the drugs, known as nucleoside analog reverse-transcriptase inhibitors, or NRTIs, damage DNA in the patient's mitochondria - the "batteries" that power cells.
The scientists said it was unlikely that newer cocktails of AIDS drugs made by firms like Gilead, Merck, Pfizer and GlaxoSmithKline would inflict similar levels of damage, since they are thought to be less toxic to mitochondria. But more research is needed to be certain.
"It takes time for these side effects to become apparent, so there is a question mark about the future and whether or not the newer drugs will cause this problem," Patrick Chinnery of the Institute of Genetic Medicine at Newcastle University said in a telephone interview. "They are probably less likely to, but we don't know because we haven't had time to see."