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N-acetylcysteine reduces extinction responding and induces enduring reductions in cue- and heroin-induced drug-seeking.


ABSTRACT: Previous studies show that the acute administration of N-acetylcysteine (NAC) inhibits the desire for cocaine in addicts and cocaine-seeking in animals.Rats were trained to self-administer heroin, and the reinstatement model of drug seeking was used to determine whether chronic NAC treatment inhibited heroin-seeking.Daily NAC administration inhibited cue- and heroin-induced seeking. Moreover, repeated NAC administration during extinction training reduced extinction-responding and inhibited cue- and heroin-induced reinstatement for up to 40 days after discontinuing daily NAC injection.These data show that daily NAC inhibits heroin-induced reinstatement and produces an enduring reduction in cue- and heroin-induced drug seeking for over 1 month after the last injection of NAC. Both the inhibitory effect of NAC on the reinstatement of heroin-seeking and the ability of NAC to reduce extinction-responding support clinical evaluation of repeated NAC administration to decrease in drug-seeking in heroin addicts.

SUBMITTER: Zhou W 

PROVIDER: S-EPMC2709691 | biostudies-literature | 2008 Feb

REPOSITORIES: biostudies-literature

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N-acetylcysteine reduces extinction responding and induces enduring reductions in cue- and heroin-induced drug-seeking.

Zhou Wenhua W   Kalivas Peter W PW  

Biological psychiatry 20070824 3


<h4>Background</h4>Previous studies show that the acute administration of N-acetylcysteine (NAC) inhibits the desire for cocaine in addicts and cocaine-seeking in animals.<h4>Methods</h4>Rats were trained to self-administer heroin, and the reinstatement model of drug seeking was used to determine whether chronic NAC treatment inhibited heroin-seeking.<h4>Results</h4>Daily NAC administration inhibited cue- and heroin-induced seeking. Moreover, repeated NAC administration during extinction trainin  ...[more]

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