刘绍东++张彦秋



摘 要:目的:探讨补充维生素C对剧烈运动后人体血清炎症因子水平的影响及ROS/NF-κB信号通路在其中的作用。方法:随机选取20名健康男性在校大学生,分为实验组和对照组。运动开始前分别给予两组大学生维生素C片3.0 g和安慰剂口服。两组大学生分别按照75%VO2max进行跑台运动,持续时间为1 h,并于运动干预开始前10 min、结束后0 h和2 h分别采集静脉血,分离血清和血细胞,并利用ELISA法检测外周血IL-1、IL-6、IL-8含量;由血细胞中分离白细胞后,分别测定白细胞中活性氧(ROS)水平和IKKα激酶活性。结果:剧烈运动后,两组大学生外周血白细胞均明显升高,组间无明显差异;对照组外周血IL-1、IL-6、IL-8含量均表现出逐渐升高的趋势,而实验组未表现出此趋势,其中IL-1水平运动前后无明显变化。此外,两组大学生外周血白细胞中IKKα活性均表现出先升后降的变化趋势,其中实验组升高趋势明显低于对照组。而白细胞中ROS水平却表现出逐渐升高的趋势,其中以对照组升高趋势更明显,组间差异有统计学意义。结论:剧烈运动可以引起白细胞中ROS/NF-κB信号通路活化和血清炎症因子水平升高,而运动前补充维生素C可以有效抑制白细胞中ROS/NF-κB信号通路活化介导的血清炎症因子水平升高。
关键词:剧烈运动;ROS/NF-κB信号通路;炎症因子;维生素C
中图分类号:G804.7 文献标识码:A 文章编号:1006-2076(2015)03-0062-05
Abstract:Objective: To illustrate the effect of Vitamin C on the serum level of inflammatory factors and the role of ROS/NF-κB signaling pathway.Methods:10 healthy male college students were randomly selected and equally divided into experiment group and control group. Vitamin C (3.0 g) and placebo were given prior to treadmill running exercise for 1 h, the strength of which was equal to 75% VO2max. Venous blood was collected at 10 min before the beginning, 0 h and 2 h after the end of the exercise, respectively. The levels of IL-1, IL-6 and IL-8 were detected using ELISA method. The level of reactive oxygen species (ROS) and the activity of IKKα in white blood cells were also measured.Results: After the strenuous exercise, the leukocyte number in peripheral blood was significantly increased in both groups, however, there was no significant differences. The levels
近年来,运动与免疫的关系已成为运动医学领域的研究热点。大量实验证据表明,人体长期坚持进行适量的有氧运动可以明显改善机体免疫机能,而长时间、大强度运动可引起人体免疫机能短期内迅速减退、免疫系统稳态失衡,并可导致机体抗病能力降低[1-3]。……