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• W2018069376 abstract "The protection of the developing organism from oxidative damage is ensured by antioxidant defense systems to cope with reactive oxygen species (ROS), which in turn can be influenced by dietary polyunsaturated fatty acids (PUFAs). PUFAs in membrane phospholipids are substrates for ROS-induced peroxidation reactions. We investigated the effects of dietary supplementation with omega-3 PUFAs on lipid peroxidation and antioxidant enzyme activities in rat cerebrum, liver and uterus. Pups born from dams fed a diet low in omega-3 PUFAs were fed at weaning a diet supplying low α-linolenic acid (ALA), adequate ALA or enriched with eicosapentaenoic acid (EPA) plus docosahexaenoic acid (DHA). Malondialdehyde (MDA), a biomarker of lipid peroxidation, and the activities of superoxide dismutase 1 (SOD1), SOD2, catalase (CAT) and glutathione peroxidase (GPX) were determined in the three target organs. Compared to low ALA feeding, supplementation with adequate ALA or with EPA + DHA did not affect the cerebrum MDA content but increased MDA content in liver. Uterine MDA was increased by the EPA + DHA diet. Supplementation with adequate ALA or EPA + DHA increased SOD2 activity in the liver and uterus, while only the DHA diet increased SOD2 activity in the cerebrum. SOD1, CAT and GPX activities were not altered by ALA or EPA + DHA supplementation. Our data suggest that increased SOD2 activity in organs of the growing female rats is a critical determinant in the tolerance to oxidative stress induced by feeding a diet supplemented with omega-3 PUFAs. This is may be a specific cellular antioxidant response to ROS production within the mitochondria." @default.
• W2018069376 created "2016-06-24" @default.
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• W2018069376 date "2012-01-01" @default.
• W2018069376 modified "2023-10-17" @default.
• W2018069376 title "Omega-3 fatty acids enhance mitochondrial superoxide dismutase activity in rat organs during post-natal development" @default.
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• W2018069376 doi "https://doi.org/10.1016/j.biocel.2011.10.007" @default.
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