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[榄香烯对过氧化氢诱导的人脐静脉内皮细胞损伤的保护作用]

[The protection of elemene on injured HUVECs induced by hydrogen peroxide].

作者信息

Wang Gui-xue, Wu Ling-yan, Tang Shu-tang, Yin Tie-ying

机构信息

Chongqing University, Chongqing 400044, China.

出版信息

Zhong Yao Cai. 2007 Nov;30(11):1407-10.

Abstract

OBJECTIVE

To evaluate the effect of elemene on the survival of normal human umbilical endothelial cells (HUVECs) and the protection of elemene on injured HUVECs induced by hydrogen peroxide (H2O2).

METHODS

Normal HUVECs were treated with elemene 1-100 microg/ml for 24-72 hours, the survival rate of HUVECs was determined by tetrazolium assay (MTT). To evaluate the protective effect of elemene on HUVECs from H2O2 injury, HUVECs were injured by 1 mmol/L H2O2 and then different final concentrations of elemene were added before the injury. After culturing 1 hour, then detecting the index of MDA, T-AOC, SOD, CAT, GSH-Px and NO.

RESULTS

Elemene could inhabit the proliferation of VEC and it presented dose-dependent, while on the side of anti-oxidization injury, it also presented dose-dependent. MDA content and the effect of H2O2 to antioxidase activity were decreased, NO content in cell was increased, and the amount of apoptosis was reduced.

CONCLUSION

Elemene has dual effects on the survival rate of normal HUVECs in vitro, which is related to the concentration and the duration of drug exposure. Elemene has protective effects on the injured endothelial cells injured by oxidization through the function of anti-lipid oxidization.

摘要

目的

评价榄香烯对正常人脐静脉内皮细胞(HUVECs)存活的影响以及榄香烯对过氧化氢(H2O2)诱导损伤的HUVECs的保护作用。

方法

用1-100μg/ml榄香烯处理正常HUVECs 24-72小时,采用四氮唑盐比色法(MTT)测定HUVECs的存活率。为评价榄香烯对HUVECs免受H2O2损伤的保护作用,用1mmol/L H2O2损伤HUVECs,在损伤前加入不同终浓度的榄香烯。培养1小时后,检测丙二醛(MDA)、总抗氧化能力(T-AOC)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)和一氧化氮(NO)指标。

结果

榄香烯可抑制VEC增殖,呈剂量依赖性,而在抗氧化损伤方面,也呈剂量依赖性。MDA含量及H2O2对抗氧化酶活性的影响降低,细胞内NO含量增加,凋亡量减少。

结论

榄香烯对体外正常HUVECs的存活率有双重作用,这与药物暴露的浓度和持续时间有关。榄香烯通过抗脂质氧化作用对氧化损伤的内皮细胞具有保护作用。

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