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- W2042028208 abstract "The free radical theory of aging is one of the most prominent theories of aging and senescence, but has yet to be definitively proven. If free radicals are the cause of senescence, then the cellular anti-oxidant system should play a large role in lifespan determination. Because superoxide dismutase (SOD) plays a central role in detoxifying superoxide radicals, we have examined the effects of mutational inactivation of each isoform of sod on normal lifespan and lifespan extension by dietary restriction (DR) or cold-/hypothermic-induced longevity (CHIL). We find no significant decrease in lifespan for control worms or worms undergoing DR when sod isoforms are knocked-out even though sod mutational inactivation produces hypersensitivity to paraquat. In contrast, sod-1 inactivation significantly reduces lifespan extension by CHIL, suggesting that CHIL requires a specific genetic program beyond simple reduction in metabolic rate. Furthermore, CHIL paradoxically increases lifespan while reducing resistance to oxidative stress, further disassociating oxidative stress resistance and lifespan." @default.
- W2042028208 created "2016-06-24" @default.
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- W2042028208 date "2009-03-01" @default.
- W2042028208 modified "2023-10-17" @default.
- W2042028208 title "SOD isoforms play no role in lifespan in ad lib or dietary restricted conditions, but mutational inactivation of SOD-1 reduces life extension by cold" @default.
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- W2042028208 doi "https://doi.org/10.1016/j.mad.2008.11.003" @default.
- W2042028208 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19059428" @default.
- W2042028208 hasPublicationYear "2009" @default.
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