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Neuropharmacology. 2006 Sep;51(3):578-86. Epub 2006 Jul 7.

Effect of the selective 5-HT7 receptor antagonist SB 269970 in animal models of anxiety and depression.

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  • 1Department of New Drugs Research, Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Street, Kraków PL 31-343, Poland.

Abstract

The aim of the present study was to examine the effect of the selective 5-HT7 receptor antagonist SB 269970 (0.25-20 mg/kg) in the behavioral tests commonly used for predicting anxiolytic- and antidepressant-like activity. Diazepam and imipramine were used as standard drugs. SB 269970 (in one medium dose of 0.5 or 1 mg/kg) exerted a specific antianxiety-like effect in the Vogel drinking test in rats, in the elevated plus-maze test in rats and in the four-plate test in mice. Moreover, SB 269970 (in one medium dose of 5 or 10 mg/kg) showed antidepressant-like activity in the forced swimming and the tail suspension tests in mice. At the same time, the tested compound at doses of 1-20 mg/kg did not change the spontaneous locomotor activity of mice. The potential anxiolytic and antidepressant effects produced by SB 269970 were weaker than those of the reference drugs employed. It is noteworthy that the active doses of SB 269970 were devoid of any visible motor side-effects. In conclusion, the results of our studies indicate that 5-HT7 receptor antagonists may play a role in the therapy of both anxiety and depression.

PMID:
16828124
[PubMed - indexed for MEDLINE]
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