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- W2034191985 abstract "Chronic corticosterone and isolation rearing paradigms may provide reliable mouse models of depression. Using these models, the present study examined if the specific glucocorticoid receptor antagonist, RU-43044, has an antidepressant-like effect, and studied the possible role of prefrontal neurotransmission on the behavioral effects. Chronic administration of corticosterone and isolation rearing increased the immobility time in the forced swim and tail suspension tests. Subchronic treatment with RU-43044 decreased the immobility time in the forced swim test in chronic corticosterone-treated and isolation-reared mice, but not the control mice. Chronic corticosterone decreased the levels of cortical glucocorticoid receptors and stress-induced increases in plasma corticosterone levels, and blocked the response of plasma corticosterone to dexamethasone, while isolation rearing did not cause any changes in the glucocorticoid receptor system. Both chronic corticosterone and isolation rearing markedly increased high K+-induced dopamine release, but not serotonin release, in the prefrontal cortex. Subchronic RU-43044 reversed the enhanced release of dopamine in the prefrontal cortex of chronic corticosterone-treated and isolation-reared mice. These results suggest that chronic corticosterone and isolation rearing increase the depressive-like behavior in glucocorticoid receptor-dependent and independent manners, respectively, and that RU-43044 shows an antidepressant-like effect, probably via an inhibition of enhanced prefrontal dopaminergic neurotransmission in these mouse models." @default.
- W2034191985 created "2016-06-24" @default.
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- W2034191985 date "2008-12-01" @default.
- W2034191985 modified "2023-10-15" @default.
- W2034191985 title "Antidepressant-like effects of the glucocorticoid receptor antagonist RU-43044 are associated with changes in prefrontal dopamine in mouse models of depression" @default.
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- W2034191985 doi "https://doi.org/10.1016/j.neuropharm.2008.08.026" @default.
- W2034191985 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18796307" @default.
- W2034191985 hasPublicationYear "2008" @default.
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