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南京医科大学学报(自然科学版)                                  第43卷第8期
               ·1068 ·                    Journal of Nanjing Medical University(Natural Sciences)   2023年8月


             ·基础研究·

              利多卡因通过激活 AMPK/SOCS3 信号通路改善阿霉素引起的

              急性心肌损伤



              陈建溯 ,宋雅君 ,吴胜兰 ,周超一 ,金                莱 ,刘文涛 ,李庆国       1*
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               南京医科大学第二附属医院心血管外科,江苏                  南京    210009;南京医科大学药理学系,江苏省神经变性重点实验室,江
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              苏 南京     211166
             [摘    要] 目的:研究利多卡因(lidocaine,Lido)对阿霉素(doxorubicin,Dox)引起小鼠心脏损伤的治疗效果及作用机制。方
              法:32只SPF小鼠随机分为Saline组、Dox组、Dox+Lido组 、Lido组4组(n=8),观察并检测各组小鼠体重、生存率、多普勒血流成
              像、心电图、心脏超声,以及血浆肌酸激酶同工酶(creatine kinase⁃MB,CK⁃MB)、肌钙蛋白I(cardiac troponin I,cTnI),心肌组织中
              组织因子(tissue factor,TF)、基质金属蛋白酶9(matrix metalloprotein 9,MMP⁃9)、磷酸化磷酸腺苷活化蛋白激酶(phosphorylated
              adenosine 5’⁃monophosphate⁃activated protein kinase,p⁃AMPK)、缝隙连接蛋白(connexin43,Cx43)、细胞因子信号转导抑制因子
              3(recombinant suppressors of cytokine signaling 3,SOCS3)的含量。结果:与Saline组比较,Dox组小鼠体重、生存率明显降低,心
              率降低、QRS 波时限及 QT 间期延长,血浆 CK⁃MB、cTnI 值明显上升,心脏挛缩,心腔变小,TF、MMP⁃9 升高,心脏组织中 p⁃
              AMPK、SOCS3、Cx43表达减低;与Dox组相比,Dox+Lido组小鼠体重、生存率增加,心率上升,QRS波时限及QT间期正常,血浆
              CK⁃MB、cTnI值处于正常区间,心脏大小未见明显改变,TF、MMP⁃9降低,心脏组织中p⁃AMPK、SOCS3、Cx43表达增加。结论:
              利多卡因能通过激活p⁃AMPK/SOCS3/Cx43信号通路和抑制TF/MMP⁃9高表达改善阿霉素诱导的急性心肌损伤。
             [关键词] 阿霉素;心肌损伤;利多卡因;AMPK;CX43;SOCS3
             [中图分类号] R541                    [文献标志码] A                        [文章编号] 1007⁃4368(2023)08⁃1068⁃08
              doi:10.7655/NYDXBNS20230805



              Lidocaine improves acute myocardial injury induced by Doxorubicin through activating
              AMPK/SOCS3 signaling pathway

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              CHEN Jiansu ,SONG Yajun ,WU Shenglan ,ZHOU Chaoyi ,JIN Lai ,LIU Wentao ,LI Qingguo 1*
              1 Department of Cardiovascular Surgery,the Second Affiliated Hospital of Nanjing Medical University,Nanjing
              210009;Jiangsu Provincial Key Laboratory of Neurodegeneration,Department of Pharmacology,Nanjing Medical
                      2
              University,Nanjing 211166,China
             [Abstract] Objective:To study the therapeutic effect and mechanism of Lidocaine(Lido)on cardiac damage(Doxorubicin)in mice.
              Methods:Thirty⁃two SPF mice were randomly divided into four groups(n=8):saline group,Dox group,Dox+Lido group,and Lido
              group. The observation and detection of body weight,survival rate,Doppler flow imaging,ECG,cardiac ultrasound,plasma creatine
              kinase isoenzyme(CreatineKinase⁃MB,CK⁃MB),Troponin I(Cardiac troponin I,cTnI),tissue factor(TF)in the myocardial tissue,
              matrix metalloproteinase 9(MMP⁃9),phosphorylated adenosine 5’⁃monophosphate⁃activated protein kinase(p⁃AMPK),gap junction
              protein(connexin43,Cx43),inhibitor of cytokine signaling 3(recombinant suppressors of cytokine signaling 3,SOCS3)content.
              Results:Compared with the saline group,the mice in the Dox group showed the decreased body weight and survival rate,reduced heart
              rate,limited QRS wave time,prolonged QT interval,cardic contracture,small cardiac cavity,and increased expression of plasma CK⁃
              MB and cTnI but decreased expression of p⁃AMPK,SOCS3 and Cx43. Compared with the Dox group,mouse weight,survival rate and
              heart rate were increased in the Dox + Lido group. Moreover,the QRS wave time and the QT interval as well as the plasma expression
              of CK ⁃ MB and cTnI were normal in the Dox + Lido group mice. Also,no significant changes in cardiac size were observed. The

             [基金项目] 国家自然科学基金(82170503);江苏省重点研发计划(社会发展)项目(BE2021749)
              ∗
              通信作者(Corresponding author),E⁃mail:liqq@njmu.edu.cn
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