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  • Title: Fluoxetine reduces food intake by a cholecystokinin-independent mechanism.
    Author: Cooper SJ, Dourish CT, Barber DJ.
    Journal: Pharmacol Biochem Behav; 1990 Jan; 35(1):51-4. PubMed ID: 2315369.
    Abstract:
    The selective serotonin uptake inhibitor, fluoxetine (3.0-10 mg/kg), produced a significant dose-related suppression of palatable food consumption in nondeprived rats. The anorectic effect of fluoxetine (10 mg/kg) was not reversed by the potent and highly selective cholecystokinin receptor antagonist MK-329 [1-methyl-3-(2-indolyl) amino-5-phenyl-3H-1,4-benzodiazepin-2-one], administered in doses of 10-100 micrograms/kg. Fluoxetine (10 mg/kg) also significantly reduced the consumption of powdered laboratory chow in a 6-hr nocturnal free-feeding test. The anorectic effect in this paradigm was also not antagonized by MK-329. In contrast to previous data for d-fenfluramine (which enhances serotonin release), these results indicate that fluoxetine may suppress food intake by a mechanism which is independent of endogenous cholecystokinin.
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