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  • Title: Antagonism of (+)WAY 100135 to behavioral, hypothermic and corticosterone effects induced by 8-OH-DPAT.
    Author: Przegaliński E, Filip M, Budziszewska B, Chojnacka-Wójcik E.
    Journal: Pol J Pharmacol; 1994; 46(1-2):21-7. PubMed ID: 7981767.
    Abstract:
    The 5-HT1A antagonistic properties of (+)-N-tert-butyl-3-[4-(2-methoxyphenyl)piperazin-1-yl]-2-phenyl pro panamide ((+)WAY 100135) were studied. Its effect on the 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT)-induced behavioral syndrome (flat body posture and reciprocal forepaw treading) in reserpine-pretreated rats, the stimulus effect in a drug discrimination model in rats, the lower lip retraction in rats, the hypothermia in mice and secretion of corticosterone in rats, i.e. responses mediated by 5-HT1A receptors, were examined. (+)WAY 100135 administered in doses up to 10 mg/kg dose-dependently antagonized all the above responses to 8-OH-DPAT, the lowest effective doses ranging from 1.25 to 2.5 mg/kg. At the same time, (+)WAY 100135 alone given in doses of 1.25-10 mg/kg did not mimic the activity of 8-OH-DPAT in the tests used. Our results indicate that (+)WAY 100135 is an antagonist of pre- and postsynaptic 5-HT1A receptors devoid of agonist properties.
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