G. M. Garmsen

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The ability of the kappa-opioid receptor agonist trans-(+/-)- 3,4-dichloro-N-methyl-N-[2-(1-pyrrolidinyl)-cyclohexyl]-benzeneacetamide methanesulfonate (U-50,488) to modulate morphine-induced reward was assessed in preweanling (10- and 17-day-old) and periadolescent (35-day-old) rats using the conditioned place preference paradigm. Conditioning and testing(More)
 Treatment with a non-selective DA receptor agonist (i.e., NPA) has previously been shown to attenuate the kappa opioid mediated locomotor activity of preweanling rats. The purpose of the present study was to determine whether stimulation of D1-like or D2-like receptors is responsible for this behavioral effect and whether the critical DA receptors are(More)
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