利福平对鱼藤酮致分化PC12细胞氧化应激的影响

【目的】 探讨利福平对鱼藤酮诱导的分化大鼠嗜铬细胞瘤细胞株(PC12)细胞形态､活性氧(ROS)､还原型谷胱甘肽(GSH)及细胞凋亡的影响｡【方法】 利用鱼藤酮诱导分化PC12细胞建立帕金森病体外细胞模型;显微镜下观察细胞形态,酶标仪检测细胞还原型谷胱甘肽,流式细胞仪检测细胞活性氧和凋亡｡【结果】 鱼藤酮组细胞内还原型谷胱甘肽含量低于两对照组,而活性氧含量及凋亡率均高于两对照组;经100､200和300 μmol/L各浓度利福平预处理后,利福平预防组3组细胞内活性氧含量及凋亡率均低于鱼藤酮组,而细胞内还原型谷胱甘肽含量高于鱼藤酮组,且存在浓度依赖性｡【结论】 利福平可能通过氧化应激途径减轻鱼藤酮诱导的分化PC12细胞的损伤作用,且存在浓度依赖性｡

Effects of Rifampicin on Rotenone-induced Oxidative Stress in Differentiated PC12 Cells

[Objective] To explore the effects of rifampicin on cell morphology,intracellular reactive oxygen species (ROS),reduced glutathione (GSH),and cell apoptosis in rotenone-induced differentiated pheochromocytoma (PC12) cells.[Methods] Rotenone was added in rat PC12 cells to develop a model of Parkinson's disease in vitro.Cell morphology was observed by microscope.Intracellular GSH was determined by a microplate reader.The intracellular ROS and the apoptosis rate were measured by flow cytometry.[Results] Compared with control group and rifampicin control group,GSH significantly decreased but ROS and apoptosis rate significantly increased in rotenone group.Compared with rotenone group,GSH significantly increased but ROS and apoptosis rate significantly decreased in a dose-dependent manner in rifampicin control group (100,200,and 300 μmol/L).[Conclusion] Rifampicin may reduce the damage of rotenone-induced differentiated PC12 cells through inhibiting oxidative injury in a dose-dependent manner.