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• W2000379699 abstract "Among drugs that act on serotonergic neurotransmission, selective serotonin (5-HT) reuptake inhibitors (SSRIs) are now the gold standard for the treatment of anxiety disorders. The precise mechanisms of the anxiolytic actions of SSRIs are unclear. We reviewed the literature related to the effects of SSRIs and the neurochemical changes of 5-HT in conditioned fear. Acute SSRIs and 5-HT1A receptor agonists reduced the acquisition and expression of contextual conditioned fear. Chronic SSRI administration enhanced anxiolytic-like effects. Microinjection studies revealed the amygdala as the target brain region of both classes of serotonergic drugs, and the hippocampus as the target of 5-HT1A receptor agonists. These findings highlight the contribution of post-synaptic 5-HT receptors, especially 5-HT1A receptors, to the anxiolytic-like effects of serotonergic drugs. These results support the new 5-HT hypothesis of fear/anxiety: the facilitation of 5-HT neurotransmission ameliorates fear/anxiety. Furthermore, these behavioral data provide a new explanation of neurochemical adaptations to contextual conditioned fear: increased 5-HT transmission seems to decrease, not increase, fear." @default.
• W2000379699 created "2016-06-24" @default.
• W2000379699 creator A5004062368 @default.
• W2000379699 creator A5032763504 @default.
• W2000379699 creator A5054302897 @default.
• W2000379699 date "2011-12-01" @default.
• W2000379699 modified "2023-10-16" @default.
• W2000379699 title "SSRIs and conditioned fear" @default.
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• W2000379699 doi "https://doi.org/10.1016/j.pnpbp.2011.09.002" @default.
• W2000379699 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21925230" @default.
• W2000379699 hasPublicationYear "2011" @default.
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