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Our results indicate that enkephalin expression in regions of the rat mesocorticolimbic system is differentially altered by acute ethanol treatment and suggest that enkephalins may play a key role in ethanol reinforcement mechanisms.
The endocannabinoid system is essential to the expression of nicotine–CPP during less than 1 week after conditioning but not later. However, endocannabinoid-dependent mechanisms are critically involved in the development of the neuroadaptive changes responsible for the shift from CB1-dependent...
We find that the reinstatement model has adequate criterion validity in the broad sense of the term, as evidenced by the fact that reinstatement in laboratory animals is induced by conditions reported to provoke relapse in humans. The model’s criterion validity in the narrower sense, as a...
Taken together, our data confirm and extend the long-term behavioral effects of subcutaneous administration of CPF and point to a role for other systems that, besides AChE inhibition, contribute to the long-term neurotoxicity of CPF.
These findings suggest a role for nicotinic receptor systems in the pathophysiology of depression and that nicotinic compounds should be evaluated for treating depression symptoms.
Taken together, our findings support the idea that GABAergic modulation in limbic and paralimbic structures is important during both the response selection and outcome phase of risk-taking decision-making.
Contrary to prior reports of the effect of alcohol on aggressive behavior, moderate daily alcohol intake before and during VBS housing reduced aggression and precluded the formation of a dominance hierarchy in rats.
The reinforcement-enhancing effect of nicotine increases behavior controlled by both conditioned and unconditioned reinforcers; however, for less salient stimuli associative processes derived from the primary reinforcing effects of contingent nicotine may also be important. These data suggest...
Healthy adults scoring in the top quartile on the population of the impulsive SSS of the ZKPQ may be vulnerable to the abuse potential of d-amphetamine.
The present results extend our previous findings by showing that the reinforcing effects of heroin were reduced for 4–5 weeks after administration of 384 mg depot naltrexone.
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