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Although the voluntary intake of drugs of abuse is a behaviorlargely preserved throughout phylogeny, it is currently unclearwhether pathological drug use ("addiction") can be observedin species other than humans. Here, we report that behaviorsthat resemble three of the essential diagnostic criteria foraddiction appear over time in rats trained to self-administercocaine. As in humans, this addiction-like behavior is presentonly in a small proportion of subjects using cocaine and ishighly predictive of relapse after withdrawal. These findingsprovide a new basis for developing a true understanding andtreatment of addiction.
INSERM U588, Laboratoire de Physiopathologie des Comportements, Bordeaux Institute for Neurosciences, University Victor SegalenBordeaux 2, Domaine de Carreire, Rue Camille Saint-Saëns, 33077 Bordeaux Cedex, France.
* To whom correspondence should be addressed. E-mail: piazza{at}bordeaux.inserm.fr
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|Abstract »|Full Text »|PDF »
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|Abstract »|Full Text »|PDF »
The "Ups and Downs" of Signaling Cascades in Addiction.