番茄红素对大鼠乳鼠心肌细胞缺氧复氧的保护作用以及其机制

被引:5
作者
戴鸣翔
张荣庆
李聪叶
王海昌
机构
[1] 第四军医大学西京医院心血管内科
关键词
番茄红素; 心肌细胞; 缺氧/复氧; 保护作用;
D O I
10.13241/j.cnki.pmb.2011.06.015
中图分类号
R285.5 [中药实验药理];
学科分类号
摘要
目的:探讨番茄红素对心肌细胞缺氧复氧的保护作用以及其分子机制。方法:采用原代培养心肌细胞建立缺氧/复氧损伤模型,实验分8组:正常对照组,H/R组,H/R+番茄红素(1,2,4,8,16,32μmol/L)剂量组。观察各组细胞经H/R损伤后,细胞内天冬氨酸氨基转移酶(AST)、肌酸激酶(CK)、乳酸脱氢酶(LDH)、超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量的变化情况,选择正常对照组,H/R组,最佳番茄红素剂量组做MTT分析细胞凋亡,Western检测TRL 4以及NF-κB的表达。结果:番茄红素(16,8,4,2μmol/L)剂量组可显著降低缺氧/复氧损伤心肌细胞内AST、CK、LDH释放量及MDA的生成,并能提高SOD活性。此外番茄红素可减少心肌细胞缺氧/复氧损伤后的心肌凋亡,减少TRL 4受体以及NF-κB的表达。结论:番茄红素具有抗缺氧/复氧损伤,保护心肌细胞的作用,其机制可能是通过抑制TRL 4通路来实现的。
引用
收藏
页码:1106 / 1109
页数:4
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