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PLGF对缺血损伤大脑皮层神经元凋亡及相关蛋白的影响
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摘要
目的探讨胎盘生长因子(Placenta growth factor,PLGF)抗拟缺血神经元凋亡作用。方法原代大鼠大脑皮层神经元培养,采用氧糖剥夺法建立模拟体外脑缺血神经元损伤模型,PLGF干预,CCK-8法检测细胞存活率;TUNEL法检测神经元凋亡情况;western blot法检测Bax、Bcl-2的表达。结果与正常组相比,模型组神经元存活率明显降低,凋亡率明显增高,Bcl-2表达显著减低,Bax表达显著升高(p<0.01);与模型相比,PLGF组神经元存活率明显提高,凋亡率明显降低,Bcl-2表达显著升高,Bax表达显著减低(P<0.01)。结论 PLGF可能是通过调节Bax、Bcl-2蛋白表达,减少神经元凋亡,发挥保护缺血损伤神经元作用。
Objective To investigate the effect of placental growth factor PLGF on neuronal apoptosis in ischemic lesions.Methods Primary rat cerebral cortical neurons were cultured.The in vitro model of Cerebral ischemic neuronal injury induced by cerebral ischemia was established by oxygen-glucose deprivation.After PLGF intervention,CCK-8 method was used to detect the cell viability,TUNEL method was used to detect neuronal apoptosis,and the expression of Bax and Bcl-2 was detected by western blot.Results Compared with the normal group,the survival rate of the neurons in the model group was significantly decreased,the apoptosis rate was significantly increased,the expression of Bcl-2 was significantly decreased and the expression of Bax was significantly increased(P<0.01).Compared with the model group,the survival rate of PLGF group was significantly increased,the apoptosis rate was significantly decreased,Bcl-2 expression was significantly increased,Bax expression was significantly reduced(P<0.01).Conclusion PLGF may play an important role in protecting the ischemic-injured neurons by reducing neuronal apoptosis and regulating the expression of Bax and Bcl-2 protein.
引文
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