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Eur Neuropsychopharmacol. 1996 Nov;6(4):305-10.

Enhancement of antipsychotic-like properties of the dopamine D2 receptor antagonist, raclopride, by the additional treatment with the 5-HT2 receptor blocking agent, ritanserin, in the rat.

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  • 1Department of Behavioral and Biochemical Pharmacology, Astra Arcus AB, Södertälje, Sweden.

Abstract

The effects of 5-HT2 receptor blockade on the ability of a dopamine (DA) D2 receptor antagonist to produce suppression of conditioned avoidance response (CAR) and to produce catalepsy in rats were examined. It was found that ritanserin (2 mg kg-1 s.c.) enhanced the raclopride (0.1 mg kg-1 s.c.)-induced suppression of CAR without affecting raclopride-induced catalepsy at either maximal (4 mg kg-1 s.c.) or submaximal (0.2 mg kg-1 s.c.) doses. Considering the CAR performance as an index of mesocorticolimbic dopaminergic functions, it is concluded that 5-HT2 receptor blockade confers a limbic profile on the DA D2 receptor antagonist.

PMID:
8985714
[PubMed - indexed for MEDLINE]
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