食品科学

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不同形态硒与VE联用对H2O2诱导人脐静脉血管内皮细胞氧化应激损伤的保护作用

李 霞,姚 昭,张云龙,李红艳*   

  1. 南昌大学 食品科学与技术国家重点实验室,江西 南昌 330047
  • 出版日期:2016-04-15 发布日期:2016-04-13

Protective Effect of Individual and Combined Selenium and VE on H2O2-Induced Oxidative Damage in HUVECs

LI Xia, YAO Zhao, ZHANG Yunlong, LI Hongyan*   

  1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
  • Online:2016-04-15 Published:2016-04-13

摘要:

目的:研究不同形态硒化合物(有机硒:L-硒甲基硒代半胱氨酸;无机硒:亚硒酸钠)单独使用及其与VE联合使用后对H2O2诱导人脐静脉血管内皮细胞(human umbilical vein endothelial cells,HUVECs)产生氧化应激损伤的保护作用。方法:采用体外细胞培养方法,将HUVECs随机分为7 组:对照组、H2O2组、L-硒甲基硒代半胱氨酸(L-Se-methylselenocysteine,L-SeMSC)组、亚硒酸钠(sodium selenite,SS)组、VE组、L-SeMSC+VE联用组、SS+VE联用组。经不同样品干预处理后,采用四甲基偶氮唑蓝(methyl thiazolyl tetrazolium,MTT)法检测 HUVECs存活率;检测各组细胞内脂质氧化终产物丙二醛(malondialdehyde,MDA)含量以及超氧化物歧化酶(superoxide dismutase,SOD)、谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)活性的变化。结果:各处理组HUVECs存活率之间没有显著差异;与H2O2组比较,0.1 mg/L亚硒酸钠、10 mg/L VE处理能使HUVECs内MDA生成量显著减少,SOD和GSH-Px活性显著升高,并且亚硒酸钠和VE联合使用在细胞水平上具有显著的协同作用,而L-SeMSC组与对照组无显著差异。结论:亚硒酸钠和VE均可保护由H2O2诱导引起的HUVECs氧化损伤,提高HUVECs抗氧化能力,并且亚硒酸钠和VE联用具有明显的协同抗氧化作用。

关键词: 硒, VE, 人脐血管内皮细胞, 协同抗氧化活性

Abstract:

Objective: To study the protective effect of individual and combined selenium and VE on human umbilical vein
endothelial cell (HUVECs) with H2O2-induced oxidative damage. Methods: HUVECs cultured in vitro were divided into
normal control group, model control group and five treatment groups including L-Se-methylselenoeysteine (L-SeMSC)
group, sodium selenite (SS) group, VE group, L-SeMSC + VE group, and SS + VE group. The HUVECs were injured by
H2O2 after they were incubated for 24 h. The effects of all these treatments on cell viability were assayed by MTT. The
activity of antioxidant enzymes (SOD and GSH-Px) and the content of MDA were determined. Results: Compared with
the model group, treatment with 0.1 mg/L SS, or 10 mg/L VE could increase the viability of HUVECs, reduce the content
of MDA, and increase the activity of antioxidant enzymes (SOD and GSH-Px). The combination of SS and VE exerted a
synergistic antioxidant effect at the cellular level, but L-SeMSC did not exhibit a significant difference when compared with
the control group. Conclusion: both SS and VE possess protective effect on H2O2-induced damage in HUVECs, and can
enhance cell antioxidant activity in a synergistic manner.

Key words: selenium, VE, human umbilical vein endothelial cells (HUVECs), synergistic antioxidant activity

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