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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (6): 620-625.

• 基础研究 • 上一篇    下一篇

不同类型黄酮对过氧化氢诱导的心肌细胞凋亡的影响

陆景坤, 王丽伟, 刘凤芝   

  1. 哈尔滨医科大学药学院药物化学与天然药物化学教研室, 哈尔滨150081, 黑龙江
  • 收稿日期:2007-03-31 修回日期:2007-04-29 发布日期:2020-11-09
  • 通讯作者: 刘凤芝, 女, 教授, 硕士生导师, 研究方向:心血管药理学。Tel:0451-88160957 E-mail:lfzhi-304@sina.com
  • 作者简介:陆景坤, 女, 硕士, 主管药师, 研究方向:药理学。Tel:13796620103 E-mail:lujingkun909 @sina. com
  • 基金资助:
    国家自然科学基金项目(30371684)

Effect of different types of flavonoids on H2O2-induced apoptosis in neonatal rat cardiomyocytes

LU Jing-kun, WANG Li-wei, LIU Feng-zhi   

  1. Department of Medicinal Chemistry and Natural Medicinal Chemistry Horbin Medical University, Haerbin 150081, Heilongjiang, China
  • Received:2007-03-31 Revised:2007-04-29 Published:2020-11-09

摘要: 目的:观察不同类型的黄酮类化合物红花黄色素A(查儿酮)、 高良姜素(黄酮醇)、 陈皮素(二氢黄酮) 对H2O2 诱导的心肌细胞凋亡及Bcl-2、 Bax、 Caspase-3 蛋白表达的影响。方法:取Wistar 大鼠乳鼠心肌细胞做原代培养, 制备H2O2 诱导的心肌细胞凋亡模型。MTT 法检测3 种黄酮类化合物适宜的实验浓度, TUNEL 法、流式细胞术检测细胞凋亡率, 免疫组化法测定Bcl-2、 Bax、 Caspase-3 蛋白表达。结果:MTT 法显示各组药物只有5 μmol/L 组与空白组相比差异无统计学意义(P<0. 05) 。仅30 μmol/L组细胞活力显著高于模型组, 随后实验选用30 μmol/L 作为试验浓度。TUNEL 法检测细胞凋亡率, 除红花黄色素A 组外各药物组细胞凋亡率均显著小于模型组(P<0. 05) 。流式细胞术检测显示,各药物组均能降低细胞凋亡率和坏死率。免疫组化显示, Caspase-3 蛋白阳性表达除红花黄色素A 组(与空白对照组比较P >0. 05) 外各药物组均显著小于模型组(P<0. 05) 。Bcl-2 Bax 比值除红花黄色素A 组(与正常组比较P >0. 05) 外各药物组均显著高于模型组(P<0. 05) 。TUNEL 法检测凋亡率、Caspase-3 蛋白阳性表达、Bcl-2 Bax 比值均显示陈皮素和高良姜素组间无统计学差异(P >0. 05) 。结论:陈皮素和高良姜素抑制100 μmol/L H2O2 诱导新生乳鼠心肌细胞凋亡的效果相当, 可调节Bcl-2、 Bax、 Caspase-3 蛋白表达, 起到保护心肌细胞作用;而红花黄色素A 对细胞坏死的影响可能比对细胞凋亡的作用更强。

关键词: 黄酮, 心肌细胞凋亡, 抗氧化作用

Abstract: AIM:To investigate the effect of different types of flavonoids, galangin (flavonol), hesperetin (flavonone) and hydroxysafflor yellow A (HYSA, chalcone), on cardiomyocytic injury induced by H2O2, and explore the possible signal pathways involved.METHODS:The cytotoxicity of different flavonoids was determined by MTT assay. Apoptosis rate was determined by flow cytometry (FCM) and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL). Immunohistochemistry was used for detection of Bcl-2, Bax and Caspase-3 protein.RESULTS:It showed that each flavonoid did not have noticeable cytotoxicity at a concentration of 5 μmol/L by MTT assay. Flavonoids at concentrations of 5, 15 and 30 μmol/L significantly increased cell viability compared to model group induced by H2O2 (100 μmol/L). Flavonoids also increased apoptosis rate and neorobiosis rate determined by FCM compared to model group. Galangin and hesperetin significantly decreased the apoptotic rate determined by TUNEL and the expression of Caspase-3 and increased the ratio of Bcl-2 Bax (P<0. 05) compared with model group.CONCLUSION:The results suggest that galangin and hesperetin inhibit the apoptosis induced by H2O2 in neonatal rat cardiomyocytes and that there was not noticeable difference between galangin and hesperetin in TUNEL test when H2O2 was used at a concentration of 100 μmol/L. They regulate the expression of Bcl-2, Bax and Caspase-3 proteins. HYSA may have stronger effect on neorobiosis than on apoptosis.

Key words: flavonoids, apoptosis of cardiomyocytes, antioxidant

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