Anti-anhedonic actions of the novel serotonergic agent flibanserin, a potential rapidly-acting antidepressant

European Journal of Pharmacology
P D'AquilaP Willner

Abstract

Chronic exposure to mild unpredictable stress has previously been found to depress the consumption of palatable sweet solutions and to block the formation of conditioned place preferences; these effects are reversed by chronic treatment with tricyclic or atypical antidepressant drugs. The present study was designed to evaluate the antidepressant-like activity in this model of flibaserin (BIMT-17), a novel serotonergic agent with 5-HT1A receptor agonist and 5-HT2 receptor antagonist properties. Two experiments were conducted, using rats (experiment 1) and mice (experiment 2). In experiment 1, decreases in sucrose intake were seen in rats exposed to chronic mild stress, but the effect was unreliable in this study, and sucrose testing was terminated after 7 weeks of stress. Beginning after 5 weeks of stress, groups of control and stressed animals were treated daily with vehicle, fluoxetine (5 mg/kg) or flibanserin (5, 10 or 20 mg/kg). After 6 weeks of treatment, all animals were tested for acquisition of food-reinforced place preference conditioning. Conditioning was seen in all groups other than the vehicle-treated stressed animals. We also tested the locomotor stimulant effect of a single injection of the dopamine D2/D3 receptor...Continue Reading

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Citations

May 10, 2012·Journal of Neural Transmission·Karl StreckerJohannes Schwarz
Oct 18, 2000·European Journal of Pharmacology·P S D'AquilaG Serra
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