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  • Title: Reduction of cocaine seeking by a food-based inhibitor in rats.
    Author: Weiss SJ, Kearns DN, Christensen CJ, Huntsberry ME, Schindler CW, Panlilio LV.
    Journal: Exp Clin Psychopharmacol; 2007 Aug; 15(4):359-67. PubMed ID: 17696683.
    Abstract:
    Environmental stimuli can exert a powerful influence over drug seeking and taking. For example, previous experiments found that combining multiple drug-related stimuli tripled drug seeking and doubled drug intake (L. V. Panlilio, S. J. Weiss, & C. W. Schindler, 1996, 2000), whereas a signal for the absence of cocaine (i.e., a drug-related inhibitor) dramatically reduced cocaine seeking in rats by over 90% (D. N. Kearns, S. J. Weiss, C. W. Schindler, & L. V. Panlilio, 2005). In the present experiment, a signal for the absence of food created through the A+/AB- conditioned inhibition paradigm also suppressed responding for cocaine by approximately 90%. Symmetrically, a signal for the absence of cocaine (i.e., a cocaine-based inhibitor) suppressed food seeking to a similar degree. These findings, consistent with the appetitive-aversive interaction theory of motivation, suggest that using inhibitors based on nondrug appetitive reinforcers might be a practical method of reducing drug seeking in human drug abusers and should be seriously considered for clinical test and application.
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