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• W2007495443 abstract "(-)-Pindolol, which possesses significant affinity for 5-HT1A, 5-HT1B, and beta 1/2-adrenergic receptors (AR)s, dose-dependently increased extracellular levels of dopamine (DA) and noradrenaline (NAD) versus 5-HT, in dialysates of the frontal cortex (FCX), but not accumbens and striatum, of freely-moving rats. In distinction, the preferential beta 1-AR antagonist, betaxolol, and the preferential beta 2-AR antagonist, ICI118,551, did not increase basal levels of DA, NAD, or 5-HT. Further, they both dose-dependently and markedly blunted the influence of (-)-pindolol upon DA and NAD levels. The selective 5-HT1A receptor antagonist, WAY100,635, slightly attenuated the (-)-pindolol-induced increase in DA and NAD levels, while the selective 5-HT1B antagonist, SB224,289, was ineffective. These data suggest that (-)-pindolol facilitates frontocortical dopaminergic (and adrenergic) transmission primarily by activation of beta 1/2-ARs and, to a lesser degree, by stimulation of 5-HT1A receptors, whereas 5-HT1B receptors are not involved. (-)-Pindolol potentiated the increase in FCX levels of 5-HT elicited by the 5-HT reuptake inhibitors, fluoxetine and duloxetine, and also enhanced their ability to elevate FCX levels of DA--though not of NAD. In contrast to (-)-pindolol, betaxolol and ICI118,551 did not affect the actions of fluoxetine, whereas both WAY100,635 and SB224,289 potentiated the increase in levels of 5-HT--but not DA or NAD levels--elicited by fluoxetine. In conclusion, (-)-pindolol modulates, both alone and together with 5-HT reuptake inhibitors, dopaminergic, adrenergic, and serotonergic transmission in the FCX via a complex pattern of actions at beta 1/2-ARs, 5-HT1A, and 5-HT1B receptors. These findings have important implications for clinical studies of the influence of (-)-pindolol upon the actions of antidepressant agents." @default.
• W2007495443 created "2016-06-24" @default.
• W2007495443 creator A5015680710 @default.
• W2007495443 creator A5041494494 @default.
• W2007495443 date "1999-08-01" @default.
• W2007495443 modified "2023-09-28" @default.
• W2007495443 title "Modulation of Dialysate Levels of Dopamine, Noradrenaline, and Serotonin (5-HT) in the Frontal Cortex of Freely-Moving Rats by (-)-Pindolol Alone and in Association with 5-HT Reuptake Inhibitors Comparative Roles of β-Adrenergic, 5-HT1A, and 5-HT1B Receptors" @default.
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• W2007495443 doi "https://doi.org/10.1016/s0893-133x(99)00035-4" @default.
• W2007495443 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/10432475" @default.
• W2007495443 hasPublicationYear "1999" @default.
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