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In vitro profile of the antidepressant candidate OPC-14523 at rat and human 5-HT1A receptors.

Abstract：

:This study determined the in vitro functional profile of 1-[3-[4-(3-chlorophenyl)-1-piperazinyl]propyl]-5-methoxy-3,4-dihydro-2-quinolinone monomethanesulfonate (OPC-14523) at rat and human serotonin (5-HT) 5-HT1A receptors and binding affinity of OPC-14523 at human frontocortical 5-HT1A receptors. OPC-14523 (1 microM) increased guanosine-5'-O-(3-[35S]thio)-triphosphate ([35S]GTPgammaS) binding to 5-HT1A receptor-containing regions of rat brain tissue sections (approximately 53% of the effect of 1 microM (+)8-hydroxy-2-(di-n-propylamino)tetralin ((+)8-OH-DPAT) that were blocked by the selective 5-HT1A receptor antagonist N-[2-[4-(2-methoxyphenyl)-1-piperazinyl]ethyl]-N-2-pyridinylcyclohexanecarboxamide (WAY-100635). OPC-14523 also behaved as a partial agonist in its stimulation of [35S]GTPgammaS binding to membranes from rat hippocampus (pEC50=7.60+/-0.23, Emax=41.1% of the effect of 10 microM (+)8-OH-DPAT), human frontal cortex (pEC50=7.89+/-0.08; Emax=64% of the effect of 10 microM (+)8-OH-DPAT), and Chinese Hamster Ovary cells expressing cloned human 5-HT1A receptors (pEC50=8.0+/-0.11; Emax=85.5% of the effect of 10 microM 5-HT), and all of these effects of OPC-14523 were blocked by WAY-100635. Taken together, these data support the development of OPC-14523 as an antidepressant whose mechanism of action involves potent partial agonist activity at 5-HT1A receptors.

journal_name

Eur J Pharmacol

journal_title

European journal of pharmacology

authors

Jordan S,Chen R,Koprivica V,Hamilton R,Whitehead RE,Tottori K,Kikuchi T

doi

10.1016/j.ejphar.2005.05.035

keywords:

subject

Has Abstract

pub_date

2005-07-11 00:00:00

pages

165-73

issue

3

eissn

0014-2999

issn

1879-0712

pii

S0014-2999(05)00569-8

journal_volume

517

pub_type

杂志文章

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