Book: Aging and Oxidants in Animals and Plants Aging and oxidants in the nematode Caenorhabditis elegans
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Longevity and resistance to stress correlate with DNA repair capacity in Caenorhabditis elegans
DNA repair is an important mechanism by which cells maintain genomic integrity. Decline in DNA repair capacity or defects in repair factors are thought to contribute to premature aging in mammals. The nematode Caenorhabditis elegans is a good model for studying longevity and DNA repair because of key advances in understanding the genetics of aging in this organism. Long-lived C. elegans mutants...
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BACKGROUND/OBJECTIVES Acanthopanax sessiliflorus is a native Korean plant and used as traditional medicine or an ingredient in many Korean foods. The free radical theory of aging suggests that cellular oxidative stress caused by free radicals is the main cause of aging. Free radicals can be removed by cellular anti-oxidants. MATERIALS/METHODS Here, we examined the anti-oxidant activity of Aca...
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A high-sugar diet has been associated with reduced lifespan in organisms ranging from worms to mammals. However, the mechanisms underlying the harmful effects of glucose are poorly understood. Here we establish a causative relationship between endogenous glucose storage in the form of glycogen, resistance to oxidative stress and organismal aging in Caenorhabditis elegans. We find that glycogen ...
متن کاملAging: The Blurry Line between Life and Death
Although historically reactive oxygen species have been implicated as a potential cause of ageing, recent evidence suggests that a modest increase in oxidants can actually extend lifespan. A new study suggests that, in Caenorhabditis elegans, reactive oxygen species regulate longevity through a pathway classically linked to apoptosis.
متن کاملProteomic identification of proteins specifically oxidized in Caenorhabditis elegans expressing human Abeta(1-42): implications for Alzheimer's disease.
Protein oxidation has been shown to lead to loss of protein function, increased protein aggregation, decreased protein turnover, decreased membrane fluidity, altered cellular redox poteintial, loss of Ca2+ homeostaisis, and cell death. There is increasing evidence that protein oxidation is involved in the pathogenesis of Alzheimer's disease and amyloid beta-peptide (1-42) has been implicated as...
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