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Discovering key cellular and molecular traits that promote longevity is a major goal of aging and longevity research. One experimental strategy is to determine which traits have been selected during the evolution of longevity in naturally long-lived animal species. This comparative approach has been applied to lifespan research for nearly four decades, yielding hundreds of datasets describing aspects...
Accumulation of DNA lesions compromises replication and transcription and is thus toxic to cells. DNA repair deficiencies are generally associated with cellular replicative senescence and premature aging syndromes, suggesting that efficient DNA repair is required for normal longevity. It follows that the evolution of increasing lifespan amongst animal species should be associated with enhanced DNA...
Strong epidemiological and experimental evidence links folate deficiency and resultant hyperhomocysteinemia with cognitive decline and neurodegeneration. Here, we tested the hypothesis that uracil misincorporation contributes to mitochondrial pathology in aged brain following folate deprivation. In a 2×2 design, 14-month-old mice lacking uracil DNA glycosylase (Ung−/−) versus wild-type controls were...
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