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A 10% increase in private liquor stores was associated with a 2.45% (95% CI:?��?2.39%, P?this website ""In this double-blind, placebo-controlled trial, we compared varenicline (2 mg) to placebo for treatment for cocaine and tobacco dependence in 31 methadone-maintained subjects. Subjects received weekly counseling during the 12-week study participation. Our results indicate that varenicline is safe to give to this subject population, as there were no adverse MK-4827 events related to medication during this study. Varenicline was no more effective than placebo for abstinence from cocaine. Treatment with varenicline was associated with a reduced number of cigarettes smoked per day, even though subjects received only a brief education for smoking cessation. The self-report reduction in smoking was corroborated by CO levels and the Fagerstr?m Test of Nicotine Dependence. However, self-ratings of positive mood on the Positive Affect Negative Affect Schedule did significantly decrease in the varenicline group as compared to the placebo group, although this appears to be due to randomization differences related to lifetime depression diagnosis. These preliminary findings may point to potential therapeutic value of varenicline for smoking cessation in cocaine users maintained on methadone. (Am J Addict 2010;19:401�C408) ""Repeated administration of psychostimulant drugs, such as amphetamine, induces an enhanced behavioral response to subsequent drug challenge. This behavioral sensitization is proposed to model the increased drug craving observed in human psychostimulant abusers. Current thinking is that the ventral tegmental area, but not the nucleus accumbens, plays a critical role in the development of behavioral DEF6 sensitization. Here, we report that the concomitant blockade of glutamatergic and nicotinic ionotropic receptors in the core of the nucleus accumbens blocks the development of behavioral sensitization to amphetamine and further abolishes the increase in extracellular dopamine release induced by amphetamine in the nucleus accumbens. These findings demonstrate that the development of behavioral sensitization to amphetamine depends, in addition to the well-known role of the ventral tegmental area, on glutamatergic and nicotinic-dependent mechanisms in the core of the nucleus accumbens and further indicate that the dopaminergic mesolimbic pathway must be viewed as a single coordinated system of critical importance in the development of behavioral sensitization to psychostimulant drugs.