BLOCKADE OF DELTA-OPIOID RECEPTORS IN THE NUCLEUS-ACCUMBENS PREVENTS ETHANOL-INDUCED STIMULATION OF DOPAMINE RELEASE

被引:107
作者
ACQUAS, E [1 ]
MELONI, M [1 ]
DICHIARA, G [1 ]
机构
[1] UNIV CAGLIARI,DEPT TOXICOL,VIALE A DIAZ 182,I-09126 CAGLIARI,ITALY
关键词
DELTA-OPIOID RECEPTORS; DOPAMINE; ETHANOL;
D O I
10.1016/0014-2999(93)90809-V
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Naltrindole, a specific delta-opioid antagonist, infused by reverse dialysis in the nucleus accumbens of freely moving rats completely prevented the increase in extracellular dopamine concentrations elicited in the nucleus accumbens by ethanol (1.0 g/kg i.p.) as well as by the delta-opioid receptor agonist [D-Ala2]deltorphin II (50 muM), also perfused by reverse dialysis, but not by cocaine (15 mg/kg s.c.). The results provide in vivo evidence for a critical role of delta-opioid receptors in the dopamine-releasing properties of ethanol in vivo.
引用
收藏
页码:239 / 241
页数:3
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