国际麻醉学与复苏杂志   2013, Issue (11): 12-12
    
抑制性氨基酸GABA及其受体在脑缺血性损伤中的作用
朱爱, 王海云1()
1.天津医科大学总医院麻醉科
Role of GABA and its receptors in cerebral ischemic injury
 全文:
摘要:

【摘要】背景:脑缺血时引起的兴奋性氨基酸过量释放是导致神经元死亡的重要原因。γ-氨基丁酸(γ-aminobutyric acid,GABA)是哺乳动物中枢神经系统主要的抑制性神经递质,GABA递质及其受体的改变能改善兴奋性氨基酸过量造成的不利影响。以往对抑制性递质系统在脑缺血性损伤中的作用的研究较少,近年来,研究发现采取有效措施增强GABA能系统功能可以改善脑缺血结局。目的:探讨GABA能系统在脑缺血性损伤中的作用。内容:本文综述了GABA递质,GABA受体结构,分布,生理作用机制及其在脑缺血过程中不同水平的改变及其相关机制。趋向:GABA能系统有望为临床脑缺血性损伤的治疗提供新思路。

关键词: γ--氨基丁酸;脑缺血;脑保护
Abstract:

【Abstract】 Background:Excessive release of excitatory amino acids is a main cause of neuron death during cerebral ischemia. GABA is the major inhibitory neurotransmitter in mammal central nervous system, the changes of GABA neurotransmitter and its receptor system may inhibit the neurotoxicity induced by excitatory amino acids. A few research concentrate on the role of inhibitory neurotransmitter systems during cerebral ischemia in the past. Recently, Some studies found that the effective enhancement of the GABAergic system function can improve cerebral ischemic outcome. Objective: To investigate the role of GABAergic system during cerebral ischemia. Contents: This review will focus on the GABA neurotransmitter, the structure, distribution, physiological functions of GABA receptors and their changes during cerebral ischemia, with related mechanisms. Trend: GABAergic system is expected to provide new ideas for the treatment of clinical ischemic brain injury.

Key words: γ-aminobutyrate acid;GABA receptors;Cerebral ischemia