作者: Clayton T. Bauer , Matthew L. Banks , S. Stevens Negus
DOI: 10.1007/S00213-013-3405-1
关键词: Stimulation 、 Facilitation 、 Saline 、 Self-administration 、 Brain stimulation 、 Pharmacology 、 Psychology 、 Continuous treatment 、 Amphetamine 、 Anesthesia 、 Medial forebrain bundle
摘要: Chronic amphetamine treatment reduces cocaine self-administration in pre-clinical and clinical settings, has been proposed as a candidate medication for of abuse. The objective the present study was to investigate whether chronic can decrease abuse-related effects an assay intracranial self-stimulation (ICSS). Thirteen adult male Sprague-Dawley rats were equipped with electrodes targeting medial forebrain bundle trained lever press pulses brain stimulation “frequency-rate” ICSS procedure. Cocaine (10 mg/kg) administered before (day 0), during (days 7 14), after (posttreatment days 1 3) 2 weeks continuous either (0.32 mg/kg/h, n = 7) or saline (n = 6) via osmotic pump. Prior treatment, facilitated all rats. Saline had no effect on baseline cocaine-induced facilitation at any time. Conversely, produced sustained though submaximal ICSS, little additional treatment. Termination depression recovery ICSS. These data suggest that blunts expression