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一氧化氮在有氧运动大鼠股四头肌过氧化应激及JNK表达中的作用
引用本文:秦春霞,钱海,车力龙,秦从军,陈谦,肖德生.一氧化氮在有氧运动大鼠股四头肌过氧化应激及JNK表达中的作用[J].沈阳体育学院学报,2011,30(1):58-61.
作者姓名:秦春霞  钱海  车力龙  秦从军  陈谦  肖德生
作者单位:1. 江苏大学,基础医学与医学技术学院,江苏,镇江,212013
2. 广州医学院,公共卫生与全科医学学院,广东,广州,510182
摘    要:目的:探讨有氧运动后一氧化氮(NO)对股四头肌的过氧化应激及MAPK通路的调控作用。方法:大鼠分为静息组(SED)、运动组(EXE)、静息+NOS抑制组(SED-LNAME)、运动+NOS抑制组(EXE-LNAME)。运动组及运动+NOS抑制组每周连续游泳5d。共持续3个月。观察大鼠股四头肌MDA、SOD、TAOC及JNK水平的变化。结果:与SED组比较,EXE组大鼠股四头肌SOD、TAOC、p-JNK蛋白显著升高,在应用L-NAME干预后,运动+NOS抑制组MDA升高,SOD、TAOC、p-JNK显著下降,t-JNK无显著性变化。结论:运动训练诱导产生的NO可能介导JNK信号激酶诱导抗氧化酶产生,从而提高骨骼肌的抗氧化能力。

关 键 词:运动  抗氧化  NO  JNK

Role of Nitric Oxide in Oxidative Stress and JNK Expression of Quadriceps Femoris of Rats in Aerobic Exercise
QIN Chunxia,QIAN Hai,CHE Lilong,QIN Congjun,CHEN Qian,XIAO Desheng.Role of Nitric Oxide in Oxidative Stress and JNK Expression of Quadriceps Femoris of Rats in Aerobic Exercise[J].Journal of Shenyang Sport University,2011,30(1):58-61.
Authors:QIN Chunxia  QIAN Hai  CHE Lilong  QIN Congjun  CHEN Qian  XIAO Desheng
Institution:1.School of Medical Science and Laboratory Medicine,Jiangsu University,Zhenjiang 212013,Jiangsu,China; 2.School of Public Health and General Practice,Guangzhou Medical University,Guangzhou 510182,Guangdong,China)
Abstract:Objective:To investigate the role of NO(nitric oxide) in oxidative stress and the MAPK pathways of quadriceps femoris in long-term aerobic exercise.Methods:Rats were divided into a sedentary group(SED),an exercise group(EXE),a sedentary plus L-NAME group(SED-LNAME) and an exercise plus L-NAME group(EXE-LNAME).The rats in the EXE group and EXE plus LANME group swam for 5 days in a week,lasting for 3 months,and then the levels of MDA(malonaldehyde),SOD(Superoxide Dismutase),TAOC(total antioxidant capacity) and JNK(c-Jun N-terminal kinase) in the quadriceps femoris were analyzed.Results:Compared with the sedentary group,the contents of SOD,TAOC and p-JNK(phosphorylation-JNK) of the exercise group were significantly increased in quadriceps femoris.Treatment with L-NAME led to an increase in the MDA content,a significant decrease in the SOD,TAOC and p-JNK levels,without significant changes of the level of t-JNK in the EXE-LNAME group.Conclusion:During long-term aerobic exercise,NO may improve antioxidant capacity in skeletal muscle by increasing antioxidant enzymes activities,possibly through activating the JNK pathway.
Keywords:NO  JNK
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