Antidepressant-like effects of the novel, selective, 5-HT2C receptor agonist WAY-163909 in rodents.

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Bibliographic Details
Title:	Antidepressant-like effects of the novel, selective, 5-HT2C receptor agonist WAY-163909 in rodents.
Authors:	Rosenzweig-Lipson, Sharon, Sabb, Annmarie, Stack, Gary, Mitchell, Paul, Lucki, Irwin, Malberg, Jessica E., Grauer, Steve, Brennan, Julie, Cryan, John F., Rizzo, Stacey J. Sukoff, Dunlop, John, Barrett, James E., Marquis, Karen L.
Source:	Psychopharmacology. Jun2007, Vol. 192 Issue 2, p159-170. 12p. 2 Charts, 5 Graphs.
Subjects:	Antidepressants, Mental depression, Aggression (Psychology), Animal models in research, Rats
Abstract:	Activation of one or more of the serotonin (5-HT) receptors may play a role in mediating the antidepressant effects of SSRIs. The present studies were conducted to evaluate the effects of the novel 5-HT2C receptor agonist WAY-163909 in animal models of antidepressant activity (forced swim test (FST), resident–intruder, olfactory bulbectomy (BULB)), in a schedule-induced polydipsia (SIP) model of obsessive–compulsive disorder and in a model for evaluating sexual dysfunction. WAY-163909 (10 mg/kg, i.p. or s.c.) decreased immobility time in Wistar–Kyoto rats in the FST, effects that were reversed by the 5-HT2C/2B receptor antagonist SB 206553. Moreover, in Sprague-Dawley rats, the profile of WAY-163909 (decreased immobility, increased swimming) in the FST was comparable to the effects of SSRIs. Acute treatment with WAY-163909 (0.33 mg/kg, s.c.) decreased rodent aggression at doses lower than those required for decreasing total behavior. Administration of WAY-163909 (3 mg/kg, i.p.) for 5 or 21 days decreased the BULB-induced hyperactivity in rats. Additionally, acute administration of WAY-163909 (3 mg/kg, i.p.) decreased adjunctive drinking in a SIP model. The effects of WAY-163909 were reversed by the 5-HT2C/2B receptor antagonist SB 206553 and the selective 5-HT2C receptor antagonist SB 242084. Chronic administration of WAY-163909 produced deficits in sexual function at doses higher (10 mg/kg, i.p.) than those required for antidepressant-like effects in the BULB model. Taken together, these results demonstrate that the novel 5-HT2C receptor agonist WAY-163909 produces rapid onset antidepressant-like effects in animal models and may be a novel treatment for depression. [ABSTRACT FROM AUTHOR]
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Database:	Psychology and Behavioral Sciences Collection

Description
Abstract:	Activation of one or more of the serotonin (5-HT) receptors may play a role in mediating the antidepressant effects of SSRIs. The present studies were conducted to evaluate the effects of the novel 5-HT2C receptor agonist WAY-163909 in animal models of antidepressant activity (forced swim test (FST), resident–intruder, olfactory bulbectomy (BULB)), in a schedule-induced polydipsia (SIP) model of obsessive–compulsive disorder and in a model for evaluating sexual dysfunction. WAY-163909 (10 mg/kg, i.p. or s.c.) decreased immobility time in Wistar–Kyoto rats in the FST, effects that were reversed by the 5-HT2C/2B receptor antagonist SB 206553. Moreover, in Sprague-Dawley rats, the profile of WAY-163909 (decreased immobility, increased swimming) in the FST was comparable to the effects of SSRIs. Acute treatment with WAY-163909 (0.33 mg/kg, s.c.) decreased rodent aggression at doses lower than those required for decreasing total behavior. Administration of WAY-163909 (3 mg/kg, i.p.) for 5 or 21 days decreased the BULB-induced hyperactivity in rats. Additionally, acute administration of WAY-163909 (3 mg/kg, i.p.) decreased adjunctive drinking in a SIP model. The effects of WAY-163909 were reversed by the 5-HT2C/2B receptor antagonist SB 206553 and the selective 5-HT2C receptor antagonist SB 242084. Chronic administration of WAY-163909 produced deficits in sexual function at doses higher (10 mg/kg, i.p.) than those required for antidepressant-like effects in the BULB model. Taken together, these results demonstrate that the novel 5-HT2C receptor agonist WAY-163909 produces rapid onset antidepressant-like effects in animal models and may be a novel treatment for depression. [ABSTRACT FROM AUTHOR]
ISSN:	00333158
DOI:	10.1007/s00213-007-0710-6