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• W2143959097 abstract "The lysophosphatidic acid LPA1 receptor has recently been involved in the adaptation of the hippocampus to chronic stress. The absence of LPA1 receptor aggravates the chronic stress-induced impairment of both hippocampal neurogenesis and apoptosis that were accompanied with hippocampus-dependent memory deficits. Apoptotic death and neurogenesis in the hippocampus are regulated by oxidative stress. In the present work, we studied the involvement of LPA1 receptor signaling pathway in the regulation of the hippocampal redox after chronic stress. To this end, we used malpar1 knockout (KO) and wild-type mice assigned to either chronic stress (21 days of restraint, 3 h/day) or control conditions. Lipid peroxidation, the activity of the antioxidant enzymes catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GPX), as well as mitochondrial function stimulation, monitored through the activity of cytochrome c oxidase (COX), were studied in the hippocampus. Our results showed that chronic immobilization stress enhanced lipid peroxidation as well as the activity of the antioxidant enzymes studied (CAT, SOD, and GPX). This effect was only observed in absence of LPA1 receptor. Furthermore, only malpar1 KO mice submitted to chronic stress exhibited a severe downregulation of the COX activity, suggesting the presence of mitochondrial damage. Altogether, these results suggest that malpar1 KO mice display enhanced oxidative stress in the hippocampus after chronic stress. This may be involved in the hippocampal abnormalities observed in this genotype after chronic immobilization, including memory, neurogenesis, and apoptosis." @default.
• W2143959097 created "2016-06-24" @default.
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• W2143959097 date "2012-01-26" @default.
• W2143959097 modified "2023-10-18" @default.
• W2143959097 title "Chronic Immobilization in the ma<i>lpar1</i>Knockout Mice Increases Oxidative Stress in the Hippocampus" @default.
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• W2143959097 doi "https://doi.org/10.3109/00207454.2012.693998" @default.
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