Abstract
We have previously shown that nicotine enhances cue-induced cocaine craving. In the present study, the effects of a nicotine antagonist, mecamylamine, on cue-induced cocaine craving were investigated. Twenty-three cocaine-dependent patients, all cigarette smokers, were randomly assigned to mecamylamine (2.5 mg tablet) or placebo in a single-dose, placebo-controlled, crossover, double-blind study. Craving and anxiety were measured before and after cocaine cues with visual analog scales for desire to use cocaine and mood. Skin conductance, skin temperature and heart rate were recorded before and during cocaine cues. Following exposure to cocaine cues, all patients reported an increase in cocaine craving and anxiety relative to the pre-cue measures. Cue exposure also produced an increase in skin conductance and decrease in skin temperature. The cue-induced increase in cocaine craving was reduced, while the cue-induced skin conductance and temperature responses were unaffected, by mecamylamine. These findings show that cue-induced cocaine craving is attenuated by mecamylamine. Further study on the use of mecamylamine in relapse prevention programs are suggested.
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Acknowledgements
This study was supported by NIDA grant 1R18DA06097 (MSR) and NIDA/VA grant YOIDA50038-00 (SPB).
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Reid, M., Mickalian, J., Delucchi, K. et al. A Nicotine Antagonist, Mecamylamine, Reduces Cue-Induced Cocaine Craving in Cocaine-Dependent Subjects. Neuropsychopharmacol 20, 297–307 (1999). https://doi.org/10.1016/S0893-133X(98)00076-1
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DOI: https://doi.org/10.1016/S0893-133X(98)00076-1
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