國家衛生研究院 NHRI:Item 3990099045/6581
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    题名: Post-treatment of dextromethorphan on methamphetamine-induced drug-seeking and behavioral sensitization in rats
    作者: Yang, PP;Huang, EYK;Fu, YY;Ho, TS;Tao, PL
    贡献者: Division of Mental Health and Addiction Medicine
    摘要: In our previous study, we first demonstrated a significant effect of dextromethorphan (DM) on morphine-seeking behavior in morphine-dependent rats, when DM was given during morphine withdrawal. Using the same conditioned place preference (CPP) paradigm modified for measuring drug-seeking-related behavior, we further investigated the possible effect of DM on methamphetamine (MA)-seeking in MA-dependent rats. Our data showed that DM could also effectively suppress the drug-seeking behavior for MA, when administered during MA withdrawal. This suggests that DM may possess a pharmacological property to prevent drug-seeking behavior for addictive drugs in general. To examine the action sites of DM in the brain, DM was microinjected into the VTA or the NAc, and tested for its effect on MA-seeking during withdrawal. Both intra-VTA and intra-NAc injections of DM were able to block the MA-seeking, suggesting that DM has a dual action sites. In our neurochemical results, intra-NAc injection of DM showed a clear reduction of DA turnover rate at the NAc and the mPFC in response to MA challenge during withdrawal, which matched with the behavioral results. However, intra-VTA injection of DM reduced the DA turnover rate at the mPFC but did not have effect on the DA turnover rate at the NAc. Although further investigations may be needed to verify the connection between our neurochemical and behavioral results, the present study highlights the therapeutic potential of DM in antidrug-seeking behavior of MA and that the mechanism could be related to its effect on the mesolimbic and mesocortical dopaminergic pathways.
    日期: 2012-10
    關聯: Synapse. 2012 Oct;66(10):858-869.
    Link to: http://dx.doi.org/10.1002/syn.21576
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0887-4476&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000307169000002
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84864618290
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