Preexposure to cocaine attenuates aversions induced by both cocaine and fluoxetine: Implications for the basis of cocaine-induced conditioned taste aversions

Pharmacology, Biochemistry, and Behavior
Katherine M Serafine, Anthony L Riley

Abstract

Although cocaine-induced conditioned taste aversions (CTA) are well documented, little is known about the basis for cocaine's aversive effects. To address the role of serotonin (5-HT) in cocaine-induced aversions, the present experiments used the cross-drug preexposure design in which the effects of exposure to fluoxetine, a selective 5-HT reuptake inhibitor (SSRI) with 5-HT transporter (SERT) inhibitory properties, were examined on aversions induced by cocaine (a nonselective monoamine transport inhibitor) and the effects of cocaine preexposure were examined on fluoxetine-induced aversions. Prior to these assessments, a fluoxetine dose-response function (3.2, 5.6, 10, and 18 mg/kg) was established in male Sprague-Dawley rats to determine a dose of fluoxetine that would induce intermediate aversions that were comparable to those induced by 18 mg/kg cocaine (Experiment 1). Other groups of rats were then exposed to fluoxetine prior to aversion conditioning with cocaine (Experiment 2) and with cocaine prior to aversion conditioning with fluoxetine (Experiment 3). All drugs were administered subcutaneously (cocaine 18 mg/kg; fluoxetine 10mg/kg). Although there was no effect of fluoxetine preexposure on either cocaine- or fluoxetine...Continue Reading

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Nov 26, 2008·Pharmacology, Biochemistry, and Behavior·Katherine M Serafine, Anthony L Riley

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Citations

Oct 7, 2014·Pharmacology, Biochemistry, and Behavior·Heather E KingAnthony L Riley
May 15, 2012·Pharmacology, Biochemistry, and Behavior·Katherine M SerafineAnthony L Riley
Feb 19, 2013·Pharmacology, Biochemistry, and Behavior·Maria A BriscioneAnthony L Riley
Mar 23, 2011·Pharmacology, Biochemistry, and Behavior·Jennifer A RinkerAnthony L Riley
Jan 4, 2012·Physiology & Behavior·Katherine M SerafineAnthony L Riley

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