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• W3210100972 endingPage "11798" @default.
• W3210100972 startingPage "11798" @default.
• W3210100972 abstract "Changes in adult hippocampal cell proliferation and genesis have been largely implicated in depression and antidepressant action, though surprisingly, the underlying cell cycle mechanisms are largely undisclosed. Using both an in vivo unpredictable chronic mild stress (uCMS) rat model of depression and in vitro rat hippocampal-derived neurosphere culture approaches, we aimed to unravel the cell cycle mechanisms regulating hippocampal cell proliferation and genesis in depression and after antidepressant treatment. We show that the hippocampal dentate gyrus (hDG) of uCMS animals have less proliferating cells and a decreased proportion of cells in the G2/M phase, suggesting a G1 phase arrest; this is accompanied by decreased levels of cyclin D1, E, and A expression. Chronic fluoxetine treatment reversed the G1 phase arrest and promoted an up-regulation of cyclin E. In vitro, dexamethasone (DEX) decreased cell proliferation, whereas the administration of serotonin (5-HT) reversed it. DEX also induced a G1-phase arrest and decreased cyclin D1 and D2 expression levels while increasing p27. Additionally, 5-HT treatment could partly reverse the G1-phase arrest and restored cyclin D1 expression. We suggest that the anti-proliferative actions of chronic stress in the hDG result from a glucocorticoid-mediated G1-phase arrest in the progenitor cells that is partly mediated by decreased cyclin D1 expression which may be overcome by antidepressant treatment." @default.
• W3210100972 created "2021-11-08" @default.
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• W3210100972 date "2021-10-30" @default.
• W3210100972 modified "2023-10-18" @default.
• W3210100972 title "Cell Cycle Regulation of Hippocampal Progenitor Cells in Experimental Models of Depression and after Treatment with Fluoxetine" @default.
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• W3210100972 doi "https://doi.org/10.3390/ijms222111798" @default.
• W3210100972 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8584049" @default.
• W3210100972 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34769232" @default.
• W3210100972 hasPublicationYear "2021" @default.
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