This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.In this project, the impact of acute pre-treatment with yohimbine or placebo on the subjective and physiologic response to cocaine cues in men and women with or without cocaine dependence will be investigated. Participants will receive either 21.6 mg yohimbine or placebo before each of two cocaine-cue exposure sessions scheduled during a three day stay in the MUSC General Clinical Research Center. Each subject will be tested under both conditions in a counter-balanced, double-blind fashion. Craving and physiological arousal will be measured at regular intervals during and after cue exposure. Serum estrogen and progesterone will be collected on test days. Salivary measurement of cortisol and DHEA will also be collected for 60 minutes following cocaine cue exposure.
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