Evidence of long-term expression of behavioral sensitization to both cocaine and ethanol in dopamine transporter knockout mice.

Abstract excerpt

INTRODUCTION: Locomotor sensitization, defined as the progressive and enduring enhancement of the motor stimulant effects elicited by repeated exposure to drugs of abuse, is the consequence of drug-induced cellular neuroadaptations that likely contribute to addictive behavior. Neuroadaptations within the dopaminergic system have been shown to be involved both in the induction phase and in the long-term expression...

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