黄芪甲苷对ChangLiver细胞酒精性和非酒精性氧化损伤的保护作用

目的:探讨黄芪甲苷对Chang Liver细胞酒精性和非酒精性氧化损伤的保护作用。方法:以Chang Liver细胞为研究对象,使用乙醇、H2O2分别建立酒精性及非酒精性氧化损伤模型,MTT法测定细胞存活率,微板法、比色法检测转氨酶活力及抗氧化能力,DCF荧光法检测细胞内活性氧,流式细胞术检测细胞周期,DNA ladder法检测细胞凋亡。结果:2种氧化损伤均可导致Chang Liver细胞存活率和抗氧化酶活性下降、以及细胞外液中转氨酶活力和丙二醛含量升高,黄芪甲苷对上述损伤均有显著或极显著的保护效果;同时,乙醇能够显著降低损伤细胞内的活性氧水平,而H2O2能够显著升高损伤细胞内的活性氧水平,黄芪甲苷则能使上述异常的活性氧水平趋于正常。同时缓解乙醇或H2O2对Chang Liver细胞G0/G1期的阻滞现象,并对二者诱导的细胞凋亡均有一定的抑制作用。结论:黄芪甲苷对Chang Liver细胞的酒精性和非酒精性氧化损伤均有保护作用。

Protective effect of astragaloside IV on oxidative damages of Chang Liver cell induced by ethanol and H2O2

Objective: To study the protective effect of astragaloside IV on oxidative damages of Chang Liver cells induced by ethanol and H₂O₂. Method: The alcoholic and nonalcoholic oxidative damage models were established on Chang Liver cells with ethanol and H₂O₂, respectively. The cells viabilities were detected by MTT assay, transaminase activity and antioxidant ability were detected by micro plate and colorimetric method, reactive oxide species (ROS) was detected by DCFH-DA fluorescent probe and cell cycle was detected by flow cytometry. DNA ladder method was used to detect apoptosis. Result: Both kinds of oxidative damage could decrease the viability and antioxidant enzyme activity of Chang Liver cells, and increase the transaminase activity and MDA content of extracellular fluid. The protective effects of astragaloside IV against those two kinds of oxidative damages were significant or extremely significant. Meanwhile, ethanol could decline the level of ROS significantly in the damaged cells, while H₂O₂ could increase it significantly. And the effect of astragaloside IV was to make ROS return to the normal level. Retardation of cell cycle progression of Chang Liver cells in G₀/G₁ induced by ethanol or H₂O₂ was relieved, and apoptosis was also inhibited. Conclusion: Astragaloside IV had protective effect on oxidative damages of Chang Liver cells induced by ethanol and H₂O₂.