AIDS drugs can cause premature 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.” Read More »

HIV Drugs May Be Tied to Early Aging

SUNDAY, June 26 (HealthDay News) — An older class of antiretroviral drugs used to treat HIV can cause premature aging, a new study suggests.

Researchers examined muscle cells from HIV patients and found that zidovudine (AZT) and other antiviral drugs known as nucleoside analogue reverse-transcriptase inhibitors (NRTIs) damage DNA in mitochondria, the energy factories in cells.

The study is published June 26 in the journal Nature Genetics.

The finding may help explain why some HIV patients treated with antiviral drugs show advanced signs of frailty and age-related diseases such as dementia and cardiovascular disease at an early age. Read More »