Date: 15.9.2011
Experiments with Djugarian hamsters native to Siberia showed that when the tiny rodents temporarily lower their metabolism and body temperatures, a state called torpor, it stops and even reverses a natural breakdown of chromosomes linked to ageing.
Previous studies had hinted at a causal link between hibernation and longevity, but this is the first one to show the biological mechanism that may account for it.
Turbill and colleagues suspected that the energy-saving, coma-like state had an impact on telomeres, which sit like tiny caps on the ends of chromosomes, protecting the precious strands of genetic code.
Telomeres and telomerase, the enzyme that control them, are a key agent in ageing and longevity.
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