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目的：探讨人参皂甙Ｒｂ１、Ｒｇ１及维生素Ｅ对氧化损伤后的牛视网膜色素上皮（ｒｅｔｉｎａｌｐｉｇｍｅｎｔｅｐｉｔｈｅｌｉｕｍ，ＲＰＥ）细胞的抗氧化作用。方法：建立牛ＲＰＥ细胞氧化损伤的模型，并分为正常对照组（１ｍｌＤＭＥＭ培养液），次黄嘌呤（ｈｙｐｏｘａｎｔｈｉｎｅ，ＨＸ）／黄嘌呤氧化酶（ｘａｎｔｈｉｎｅｏｘｉｄａｓｅ，ＸＯ）损伤组（ＨＸ／ＸＯ组），Ｒｂ１组，Ｒｇ１组和维生素Ｅ组。利用硫代巴比妥酸比色法，检测各组ＲＰＥ细胞培养上清液中脂质过氧化（ｌｉｐｉｄｐｅｒｏｘｉｄａｔｉｏｎ，ＬＰＯ）产物丙二醛（ｍａｌｏｎｄｉ－ａｌｄｅｈｙｄｅ，ＭＤＡ）含量。结果：ＨＸ／ＸＯ组ＭＤＡ与正常对照组相比有显著性差异（Ｐ＜０．０５），Ｒｂ１、Ｒｇ１和维生素Ｅ组中两种药物浓度均能有效地降低ＭＤＡ的生成（Ｐ＜０．０５）。结论：人参皂甙和维生素Ｅ对ＲＰＥ细胞ＬＰＯ产物ＭＤＡ增多具有抑制作用
Objective: To investigate the anti-oxidation effects of ginsenosides Rb1, Rg1 and vitamin E on oxidatively injured bovine retinal pigment epithelium (RPE) cells. METHODS: The oxidative damage model of bovine RPE cells was established and divided into normal control group (1 ml DMEM medium), hypoxanthine (HX)/xanthine oxidase (XO) damage group (HX/XO group), Rb1 group, Rg1 group and vitamin E group. The thiobarbituric acid colorimetric method was used to detect the content of malondi-aldehyde (MDA) in lipid peroxidation (LPO) products in the culture supernatant of RPE cells. Results: There was a significant difference in MDA between the HX/XO group and the normal control group (P<0.05). The concentrations of both drugs in the Rb1, Rg1 and vitamin E groups were effective in reducing MDA production (P<0. 05). Conclusion: Ginsenoside and vitamin E have inhibitory effects on the increase of MDA in LPO production of RPE cells