注射用丹参多酚酸对H2O2诱导的人脐静脉内皮细胞损伤的保护作用

目的 研究注射用丹参多酚酸（SAFI）对过氧化氢（H₂O₂）诱导的人脐静脉内皮细胞（HUVEC）损伤的保护作用及机制。方法 体外培养HUVEC，设置对照组、模型组、SAFI（0.05、0.10、0.20、0.40、0.80 mg/mL）组，对照组及模型组不加药，继续培养24 h，模型组及SAFI组分别加入1 mmol/L H₂O₂作用1 h，对照组不加H₂O₂。CCK-8法检测HUVEC增殖；酶联免疫吸附法（ELISA）测定细胞间黏附因子（ICAM-1）、血管细胞黏附因子（VCAM-1）、丙二醛（MDA）、乳酸脱氢酶（LDH）、超氧化物歧化酶（SOD）的含量；TUNEL染色法观察HUVEC凋亡状态；Western blotting法检测凋亡相关蛋白Bcl-2、Bax的变化。结果 与模型组比较，质量浓度大于0.1 mg/mL的SAFI组细胞存活率显著增加（P<0.05）；质量浓度大于0.2 mg/mL的SAFI组LDH、MDA水平显著降低，SOD水平显著增加（P<0.05）；0.4、0.8 mg/mL的SAFI组ICAM-1、VCAM-1水平显著降低（P<0.05）；TUNEL染色结果显示，0.4、0.8 mg/mL的SAFI显著抑制凋亡；Western blotting结果显示，0.4、0.8 mg/mL的SAFI组Bcl-2蛋白表达显著升高（P<0.05），Bax蛋白表达显著下降（P<0.05）。结论 SAFI对H₂O₂诱导的HUVEC损伤有保护作用，主要是通过提高SOD含量，降低氧化指标LDH、MDA以及炎症因子ICAM-1、VCAM-1水平，调节凋亡蛋白Bax、Bcl-2的表达发挥作用。

Protective effects of Salvianolic Acids for Injection on H2O2-induced oxidative damage of HUVEC

Objective To observe the effect of Salvianolic Acids for Injection (SAFI) on the injury of human umbilical vein endothelial cells (HUVEC) induced by hydrogen peroxide (H₂O₂) and its possible mechanism. Methods HUVEC was cultured in vitro and treated with 1 mmol/L H₂O₂ for one hour to establish the HUVEC model of peroxidation damage. The control group, H₂O₂ model group and SAFI groups with different concentrations (0.05, 0.10, 0.20, 0.40, 0.80 mg/mL) for injection were set. HUVEC cell proliferation was detected by CCK-8 method. Enzyme linked immunosorbent assay (ELISA) was used to determine the contents of intercellular adhesion factor (ICAM-1), vascular cell adhesion factor (VCAM-1), malondialdehyde (MDA) and superoxide dismutase (SOD). Apoptosis status of HUVEC was evaluated by TUNEL (TdT-mediated DUTP Nick end labeling) staining. The changes of apoptosis-related proteins Bcl-2 and Bax were detected by Western blotting. Results Compared with model group, the survival rate of SAFI group with mass concentration > 0.1 mg/mL was significantly increased (P<0.05). The levels of LDH and MDA in SAFI group with mass concentration > 0.2 mg/mL were significantly decreased, while the level of SOD was significantly increased (P<0.05). The levels of ICAM-1 and VCAM-1 in 0.4 and 0.8 mg/mL SAFI group were significantly decreased (P<0.05). TUNEL staining results showed that 0.4 and 0.8 mg/mL SAFI significantly inhibited apoptosis. Western blotting results showed that Bcl-2 protein expression was significantly increased (P<0.05) and Bax protein expression was significantly decreased (P<0.05) in 0.4 and 0.8 mg/mL SAFI groups. Conclusion SAFI has a protective effect on H₂O₂-induced HUVEC injury, mainly through increasing the content of SOD, reducing the levels of oxidative indexes LDH and MDA, and inflammatory factors ICAM-1 and VCAM-1, and regulating the expression of apoptotic proteins Bax and Bcl-2.