Title : Regulation of cortical and hippocampal 5-HT(1A) receptor function by corticosterone in GR+/- mice.

Pub. Date : 2010 Apr

PMID : 19766402






4 Functional Relationships(s)
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1 5-HT(1A) receptor function was determined by measuring [(35)S]GTPgammaS binding stimulated by the 5-HT(1A) receptor agonist 8-OH-DPAT (1 microM), an indication of the capacity of the receptor to activate G proteins. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine (serotonin) receptor 1A Mus musculus
2 5-HT(1A) receptor function was determined by measuring [(35)S]GTPgammaS binding stimulated by the 5-HT(1A) receptor agonist 8-OH-DPAT (1 microM), an indication of the capacity of the receptor to activate G proteins. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine (serotonin) receptor 1A Mus musculus
3 Corticosterone treatment (10mg/kg, sc once daily for 21 days) of wild-type mice resulted in a decrease in 5-HT(1A) receptor function in prefrontal cortex [8-OH-DPAT-stimulated [(35)S]GTPgammaS binding (% above basal), vehicle-treated: 39+/-4.9; corticosterone-treated: 17+/-2.8], but not in hippocampus. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine (serotonin) receptor 1A Mus musculus
4 In contrast, corticosterone treatment of GR+/- mice resulted in an increase in 5-HT(1A) receptor function in hippocampus which reached statistical significance in CA2/3 region [8-OH-DPAT-stimulated [(35)S]GTPgammaS binding (% above basal), vehicle-treated: 41+/-9.7; corticosterone-treated: 94+/-23]. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine (serotonin) receptor 1A Mus musculus