谷氨酸转运体和γ-氨基丁酸转运体脑缺血模型中的表达意义

摘要

Objective To explore the significance of expressions of glutamate transporters and γ-aminobutyric acid transporters in the rat model with cerebral ischemia.Methods The detections of the expressions of glutamate transporter-1 (EAAC-1) and γ-aminobutyric acid transporter-1 (GAT-1) in models with ischemia in vivo and hypoxia in vitro were performed by immunofluorescence,Westen-blot and real-time polymerase chain reaction (RT-PCR) methods.Results The expression of EAAC1 was reduced in the cerebrum of focal cerebral ischemic MACO rat model as well as in primary neurons cultured under hypoxia.The expression of GAT1 was elevated.Conclusion EAAC1 expression decreases while GAT1 expression increases under condition of cerebral ischemia and anoxia.%目的 探讨谷氨酸转运体和γ-氨基丁酸转运体在脑缺血模型中的表达意义.方法 在体内缺血、体外缺氧2种模型中利用免疫荧光、Westen-blot、RT-PCR等技术定性定量的检测主要的谷氨酸转运体-1(EAAC-1)和γ-氨基丁酸转运体-1(GAT-1)的表达情况.结果 在局灶性脑缺血模型(大鼠脑中动脉缺血模型)和缺氧条件下培养的原代神经元中均发现,EAAC1表达下降,GAT1表达上升.结论 在脑缺血缺氧状态下EAAC1表达下降,GAT1表达上调.