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Opiates addiction is characterized by its long-term persistence. In order to study the enduring changes in long-term memory in hippocampus, a pivotal region for this process, we used suppression subtractive hybridization to compare hippocampal gene expression in morphine and saline-treated rats. Animals were subjected to an extended place preference paradigm consisting of four conditioning phases...
Rationale Repeated administration of psychostimulant elicits behavioral sensitization, characterized by an augmented locomotor response to a subsequent challenge injection. This sensitization is paralleled by neural adaptations. Evidences suggest that the rate at which drugs of abuse are delivered to the brain play a key role in this plasticity. Cocaethylene is a pharmacologically active homolog of...
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