摘要
目的观察表没食子儿茶素没食子酸酯(EGCG)对过氧化氢(H2O2)诱导的SH-SY5Y神经细胞凋亡的保护作用。方法采用体外细胞培养的方法,建立SH-SY5Y神经细胞H2O2损伤模型。通过观察细胞形态,测定细胞存活率(MTT法)、乳酸脱氢酶(LDH)活性,实时荧光定量(real-time)PCR检测细胞bax、bcl-2 mRNA表达的变化。结果同H2O2组比较,终浓度为50、100、150、200μmol.L-1的EGCG能减轻H2O2引起的SH-SY5Y神经细胞的损伤,且呈现剂量依赖趋势,能明显提高细胞的存活率,减少LDH的释放量,bax mR-NA表达下降,bcl-2 mRNA表达升高。结论 EGCG对H2O2诱导的SH-SYSY神经细胞损伤具有明显的保护作用。
Aim To investigate the protective effect of EGCG on hydrogen peroxide induced SH-SY5Y cells injury in vitro.Methods The protective effect of EGCG was observed by morphological identification,MTT assay,and LDH activity,while the expressions of bax and bcl-2 were detected by real-time PCR.Results Compared with the group of H2O2 control,EGCG(50,100,150,200 μmol·L-1)could relieve the damage of SH-SY5Y cells and increase the survival of the cells,lower their LDH level,and adjust the expression of bax and bcl-2 mRNA.Conclusion EGCG can protect SH-SY5Y cells from the injury induced by hydrogen peroxide.
出处
《中国药理学通报》
CAS
CSCD
北大核心
2011年第3期320-324,共5页
Chinese Pharmacological Bulletin
基金
国家自然科学基金资助项目(No30500650)
科技部重大资助专项(No2009ZXJ09001-026)