PHARMACOLOGY OF BENZODIAZEPINE RECEPTORS - AN UPDATE

被引:1
作者
SIEGHART, W
机构
来源
JOURNAL OF PSYCHIATRY & NEUROSCIENCE | 1994年 / 19卷 / 01期
关键词
GABA(A) RECEPTORS; BENZODIAZEPINE RECEPTORS; SUBUNIT COMPOSITION; PHARMACOLOGY;
D O I
暂无
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Benzodiazepine receptors are allosteric modulatory sites on GABA(A) receptors. GABA(A) receptors are probably composed of five protein subunits, at least some of which belong to different subunit classes. So far six alpha-, four beta-, three gamma-, one delta- and two rho = p subunits of GABA(A) receptors have been identified. A large number of different subunit combinations, each of which will result in a GABA(A) receptor with distinct electrophysiological and pharmacological properties, are therefore possible. Many compounds from different chemical classes which are able to bind to benzodiazepine receptors have been identified. Depending on their individual efficacy, binding of these compounds either enhances, reduces or does not influence GABAergic transmission. However, the individual efficacy of the benzodiazepine receptor ligands changes with the subunit composition of the GABA(A) receptor. The investigation of the regional distribution, subunit composition and pharmacology of GABA(A) receptors will result in the development of new and more selective compounds for psychiatry.
引用
收藏
页码:24 / 29
页数:6
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