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• W3138465892 abstract "Dysfunctions in memory recall lead to pathological fear; a hallmark of trauma-related disorders, like posttraumatic stress disorder (PTSD). Both, heightened recall of an association between a cue and trauma, as well as impoverished recall that a previously trauma-related cue is no longer a threat, result in a debilitating fear toward the cue. Glucocorticoid-mediated action via the glucocorticoid receptor (GR) influences memory recall. This literature has primarily focused on GRs expressed in neurons or ignored cell-type specific contributions. To ask how GR action in nonneuronal cells influences memory recall, we combined auditory fear conditioning in mice and the knockout of GRs in astrocytes in the prefrontal cortex (PFC), a brain region implicated in memory recall. We found that knocking out GRs in astrocytes of the PFC disrupted memory recall. Specifically, we found that knocking out GRs in astrocytes in the PFC (AstroGRKO) after fear conditioning resulted in higher levels of freezing to the CS+ tone when compared with controls (AstroGRintact). While we did not find any differences in extinction of fear toward the CS+ between these groups, AstroGRKO female but not male mice showed impaired recall of extinction training. These results suggest that GRs in cortical astrocytes contribute to memory recall. These data demonstrate the need to examine GR action in cortical astrocytes to elucidate the basic neurobiology underlying memory recall and potential mechanisms that underlie female-specific biases in the incidence of PTSD." @default.
• W3138465892 created "2021-03-29" @default.
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• W3138465892 date "2021-03-15" @default.
• W3138465892 modified "2023-10-10" @default.
• W3138465892 title "Contributions of glucocorticoid receptors in cortical astrocytes to memory recall" @default.
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• W3138465892 doi "https://doi.org/10.1101/lm.053041.120" @default.
• W3138465892 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7970741" @default.
• W3138465892 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33723032" @default.
• W3138465892 hasPublicationYear "2021" @default.
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