Abstract
Tobacco and cannabis are among the most widely abused drugs in humans, and recently, the functional interaction between nicotine and cannabinoids has been reported. The aim of the present studies is to evaluate the role of CB1 cannabinoid receptors in the reinstatement of nicotine-induced conditioned place preference. Nicotine-induced conditioned place preference was established (threeday nicotine sessions, 0.5mg/kg), extinguished and reinstated by a priming dose of nicotine. It was shown that the CB1 receptor antagonist AM 251 (0.25 and 0.5mg/kg) in a dose-dependent manner attenuates the reinstatement of nicotine place conditioning. These studies suggest a role for CB1 cannabinoids receptors in preventing the reinstatement of nicotine addiction.
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