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• W2056596287 endingPage "e4492" @default.
• W2056596287 startingPage "e4492" @default.
• W2056596287 abstract "Optic atrophy 1 (OPA1) is a dynamin-like GTPase located in the inner mitochondrial membrane and mutations in OPA1 are associated with autosomal dominant optic atrophy (DOA). OPA1 plays important roles in mitochondrial fusion, cristae remodeling and apoptosis. Our previous study showed that dOpa1 mutation caused elevated reactive oxygen species (ROS) production and resulted in damage and death of the cone and pigment cells in Drosophila eyes. Since ROS-induced oxidative damage to the cells is one of the primary causes of aging, in this study, we examined the effects of heterozygous dOpa1 mutation on the lifespan. We found that heterozygous dOpa1 mutation caused shortened lifespan, increased susceptibility to oxidative stress and elevated production of ROS in the whole Drosophila. Antioxidant treatment partially restored lifespan in the male dOpa1 mutants, but had no effects in the females. Heterozygous dOpa1 mutation caused an impairment of respiratory chain complex activities, especially complexes II and III, and reversible decreased aconitase activity. Heterozygous dOpa1 mutation is also associated with irregular and dysmorphic mitochondria in the muscle. Our results, for the first time, demonstrate the important role of OPA1 in aging and lifespan, which is most likely mediated through augmented ROS production." @default.
• W2056596287 created "2016-06-24" @default.
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• W2056596287 date "2009-02-16" @default.
• W2056596287 modified "2023-10-12" @default.
• W2056596287 title "Heterozygous Mutation of Opa1 in Drosophila Shortens Lifespan Mediated through Increased Reactive Oxygen Species Production" @default.
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• W2056596287 doi "https://doi.org/10.1371/journal.pone.0004492" @default.
• W2056596287 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2637430" @default.
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• W2056596287 hasPublicationYear "2009" @default.
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