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• W3109361185 endingPage "113040" @default.
• W3109361185 startingPage "113040" @default.
• W3109361185 abstract "Several lines of evidence have consistently indicated that physical exercise has antidepressant effects by improving hippocampal function, although the signaling pathways underpinning these responses are not well established. Therefore, this study investigated the role of mechanistic target of rapamycin complex 1 (mTORC1) and fibronectin type III domain-containing protein 5 (FNDC5)/irisin signaling in the antidepressant-like effect of physical exercise. We showed that physical exercise (treadmill running – 45 min/day/5 days/week for 4 weeks) produced an antidepressant-like effect as indicated by a reduction on the immobility time in mice subjected to the forced swimming test (FST) without altering locomotor activity in the open field test (OFT). Rapamycin (a selective mTORC1 inhibitor, 0.2 nmol/site, i.c.v.) administration completely abolished the antidepressant-like effect of physical exercise in the FST, suggesting that mTORC1 activation plays a role for its behavioral effect. Accordingly, physical exercise increased the number of phosphorylated mTORC1 (Ser2448)-positive cells in the entire and ventral subgranular zone of the hippocampal dentate gyrus. Physical exercise was also effective in augmenting the hippocampal FNDC5/irisin immunocontent, but rapamycin administration did not alter this effect. Our results reinforce the notion that physical exercise exerts an antidepressant-like effect and identifies the mTORC1-mediated signaling pathway as a target for its behavioral effects. This study provides additional evidence that physical exercise increases hippocampal FNDC5/irisin immunocontent, but this effect seems to be independent on hippocampal mTORC1 activation. Altogether the results contribute to elucidate possible molecular targets implicated in the antidepressant effects of physical exercise and highlight the role of mTORC1 signaling for its behavioral response." @default.
• W3109361185 created "2020-12-07" @default.
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• W3109361185 date "2021-02-01" @default.
• W3109361185 modified "2023-10-17" @default.
• W3109361185 title "Physical exercise stimulates hippocampal mTORC1 and FNDC5/irisin signaling pathway in mice: Possible implication for its antidepressant effect" @default.
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• W3109361185 doi "https://doi.org/10.1016/j.bbr.2020.113040" @default.
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• W3109361185 hasPublicationYear "2021" @default.
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