EFFECT OF NALOXONE-PRECIPITATED MORPHINE-WITHDRAWAL ON NORADRENALINE RELEASE IN RAT HIPPOCAMPUS INVIVO

被引:69
作者
DONE, C [1 ]
SILVERSTONE, P [1 ]
SHARP, T [1 ]
机构
[1] UNIV OXFORD,RADCLIFFE INFIRM,DEPT CLIN PHARMACOL,OXFORD OX2 6HE,ENGLAND
基金
英国医学研究理事会;
关键词
MICRODIALYSIS; NORADRENALINE; HIPPOCAMPUS; MORPHINE WITHDRAWAL; CLONIDINE;
D O I
10.1016/0014-2999(92)90052-6
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Here we investigated the effect of naloxone-precipitated morphine withdrawal on the release of noradrenaline in hippocampus of the anaesthetised rat. Naloxone (1 mg/kg i.p.) injected 3 and 24 h, but not 3 weeks, after eight daily injections of morphine, induced an immediate increase in hippocampal noradrenaline release. This striking effect of naloxone was markedly attenuated by pretreatment with clonidine (0.1 mg/kg s.c.). These findings provide direct evidence for a marked release of noradrenaline in hippocampus during opiate withdrawal in vivo.
引用
收藏
页码:333 / 336
页数:4
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