| Literature DB >> 17612788 |
R A Lahti1, C A Tamminga, A Carlsson.
Abstract
The effect of (-)-OSU6162 on the incorporation of GTPgammaS(35) in the membranes of hD(2l)-transfected CHO cells was investigated. In the absence of dopamine the compound exerted a slight but significant stimulating action, suggesting a weak partial agonism. In the presence of dopamine, low concentrations (10 to 100 nM) enhanced the stimulating action of dopamine. This enhancing effect was reversed by higher concentrations of (-)-OSU6162 in a complex biphasic manner. The dopamine-enhancing action is proposed to be mediated by binding to an allosteric site with high affinity and the inhibitory component by a low-affinity binding to the orthosteric site of the dopamine receptor.Entities:
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Year: 2007 PMID: 17612788 DOI: 10.1007/s00702-007-0784-7
Source DB: PubMed Journal: J Neural Transm (Vienna) ISSN: 0300-9564 Impact factor: 3.575