国际麻醉学与复苏杂志   2011, Issue (6): 42-42
    
谷氨酸转运体与缺血性脑损伤
张霞婧, 贾济, 朱萧玲, 陈绍洋1()
1.第四军医大学 西京医院 麻醉科
Glutamate transporter and ischemic brain damage
 全文:
摘要:

缺血性脑损伤伴有损伤级联反应的发生,主要有兴奋性毒性、钙超载、炎症和细胞凋亡等机制。脑缺血早期神经末梢大量释放谷氨酸,持续过度兴奋谷氨酸受体,胞外钙超载引发一系列毒性反应,引起急性坏死,延迟性细胞坏死和凋亡,并与缺血后的炎症反应相关。谷氨酸循环是谷氨酸主要的清除机制,调节谷氨酸转运体的活性有助于减轻脑缺血时谷氨酸造成的损伤,产生神经保护作用。本文就谷氨酸转运体与脑缺血的关系展开综述。

关键词: 谷氨酸转运体;缺血性脑损伤
Abstract:

Cerebral ischemia is accompanied with a cascade of damage, including excitotoxicity, calcium overload, inflammation and apoptosis. In the early phase of brain ischemia, huge amount of glutamate released from nerve terminals over stimulate glutamate receptors. Then the increasing extracellular concentration of calcium induce acute necrosis, delayed cell necrosis and apoptosis and inflammatory response after ischemia. Glutamate is mainly cleared by glutamate circulation. Activation of glutamate transporters can attenuate the ischemic brain damage and may be neuroprotective. In this paper, the latest progress on the relationship between glutamate transporters and ischemic brain damage is summarized.

Key words: glutamate transporter; ischemic brain damage