中国临床解剖学杂志 ›› 2016, Vol. 34 ›› Issue (5): 517-522.doi: 10.13418/j.issn.1001-165x.2016.05.009

• 实验研究 • 上一篇    下一篇

麝香保心丸通过抑制p38 MAPK和NF-κB信号传导通路表达对抗高糖诱导的心肌细胞损伤

杨翼鹰1,    陈伟燕2, 孙秀亭1, 王翔3, 李政勋1, 梁美玲4, 石卉1, 杨至圣1, 曾武涛1   

  1. 1.中山大学附属第一医院心内科,  广州   510080; 2.广州医科大学附属第二医院ICU,  广州    510260;   
    3.莱芜市人民医院心内科,  山东   莱芜    271100;    4.深圳市孙逸仙心血管医院心内科,  广东   深圳    518020
  • 收稿日期:2015-10-26 出版日期:2016-09-25 发布日期:2016-10-14
  • 通讯作者: 曾武涛,教授,硕士生导师,E-mail:zengwutao_sysumed@163.com
  • 作者简介:杨翼鹰(1990-),男,在读硕士,研究方向:心血管疾病的损伤与保护机制,E-mail:yangyiy_sysumed@163.com
  • 基金资助:

    中国中西医结合学会-和黄科研基金(2014002)

Shexiang baoxin pill protects cardiomyocytes against high glucose-induced injury by inhibiting the p38 MAPK and NF-κB pathway

YANG Yi-ying1, CHEN Wei-yan2, SUN Xiu-ting1, WANG Xiang3, LI Zheng-xun1, LIANG Mei-ling4, SHI Hui1, YANG Zhi-sheng1, ZENG Wu-tao1   

  1. 1. Department of Cardiology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080,China;  2. Intensive Care Unit, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, China;  3. Department of Cardiology, Laiwu City People’s Hospital, Laiwu, Shandong 27110, China;  4. Department of Cardiology, Sun Yat-sen Cardiovascular Hospital, Shenzhen, Guangdong 518020, China
  • Received:2015-10-26 Online:2016-09-25 Published:2016-10-14

摘要:

目的 探讨麝香保心丸(SBP)是否通过抑制p38丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)和核因子kappa B(nuclear factor kappa B,NF-κB)通路保护H9c2心肌细胞对抗高浓度葡萄糖(高糖,HG)引起的损伤。   方法 应用35 mmol /L的HG处理H9c2心肌细胞24 h,建立HG诱导的心肌细胞损伤模型;细胞计数试剂盒8测定细胞存活率;Hoechst 33258核染色荧光显微镜照相法测定细胞凋亡;双氯荧光素(2’,7’-dichlorfluorescein-diacetate,DCFH-DA)染色/荧光显微镜照相法测定胞内活性氧(ROS)水平;罗丹明123(Rh123)染色法测定线粒体膜电位(MMP);Western blot法测定p38 MAPK和NF-κB p65蛋白表达水平。   结果 HG处理H9c2心肌细胞24 h能引起细胞明显的损伤,使细胞存活率降低,凋亡细胞数量和细胞内ROS生成增多,MMP丢失;HG能增加p38 MAPK和NF-κB p65磷酸化水平;SBP预处理能明显抑制HG上调p38 MAPK和NF-κB p65磷酸化水平这一作用;SBP、p38 MAPK通路抑制剂SB203580和NF-κB通路抑制剂PDTC均能阻断HG 对心肌细胞的上述损伤作用,包括细胞毒性、凋亡、ROS生成增多及MMP丢失等。   结论 麝香保心丸(SBP)可通过抑制p38 MAPK和NF-κB信号传导通路保护H9c2心肌细胞对抗高糖(HG)引起的损伤。

关键词: 麝香保心丸, 高血糖, p38 MAPK, NF-&kappa, B, 心肌细胞

Abstract:

Objective To explore whether Shexiang Baoxin Pill(SXBXP/SBP)protects H9c2 cardiac cells against high glucose(HG)-induced injury by inhibition of p38 MAPK and NF-κB pathway.Methods H9c2 cardiac cells were treated with 35 mmol/L glucose(HG)for 24h to establish a model of HG-induced injury;Cell counter kit-8(CCK-8)was used to measure cell viability;Apoptotic cells were tested by Hoechst 33258 nuclear staining followed by fluorescence imaging;Intracellular levels of reactive oxygen species(ROS)were detected by 2’,7’-dichlorfluorescein-diacetate(DCFH-DA)staining,followed by fluorescence imaging; Mitochondrial membrane potential (MMP)was measured by a fluorescent dye,rhodamine 123(Rh123),followed by fluorescence imaging;The expression levels of p38 MAPK and NF-κB p65 protein were detected by Western blot assay. Result Treatment of H9c2 cardiac cells with HG for 24h signally induced injuries,proved by a decrease in cell viability,an increase in amount of apoptotic cells and intracellular ROS production,as well as a loss of MMP;HG strengthened the expression of phosphorylated(p)-p38 MAPK and p-NF-κB p65; Pretreatment with SBP notably inhibited the up-regulation of expression of p-p38 MAPK and p-NF-κB p65 induced by HG; Pretreatment with SBP or SB203580,an inhibitor of p38 pathway or PDTC, an inhibitor of NF-κB pathway,attenuated the above HG-induced injuries,including cytotoxicity,apoptosis,increase in ROS production and a loss of MMP,in H9c2 cardiac cells. Conclusion SXBXP(SBP) may protect H9c2 cardiac cells against the HG-induced injuries by inhibiting the p38 MAPK and NF-κB pathway.

Key words: Shexiang Baoxin Pill, High glucose, p38 MAPK, NF-κB, Cardiomyocyte