低强度有氧耐力运动对被动吸烟大鼠肝组织炎性因子的影响

2014-12-13 15:07:13刘祥梅
科教导刊 2014年32期
关键词:实验

刘祥梅

摘 要 目的:从肝组织炎性因子含量探讨低强度有氧耐力运动对吸烟机体肝脏的影响作用。方法:将48只健康雄性成年SD大鼠按体重分层随机分为对照组(C)、吸烟组(S)、运动组(E)、运动吸烟组(ES),S、ES组被动吸烟,E、ES组进行9周有氧耐力运动,检测大鼠肝组织IL-1、IL-6、TNF- 含量,并进行2析因方差分析。结果:IL-1的含量S组显著高于C组(P<0.05)、ES组显著高于C和E组(P<0.05),IL-6的含量E和ES组略高、S组略低于C组(P>0.05),TNF-的含量E组和ES组显著地高于C和S组(P<0.05~0.01)。析因方差分析显示,吸烟因素对IL-1含量升高(P<0.05),运动因素对肝组织TNF-含量升高作用明显(P<0.01)。结论:香烟烟雾促使肝组织IL-1增高与IL-6含量偏低,可能有炎症发生与脂质代谢减低,低强度有氧耐力运动对肝脏有保健作用,对抗吸烟于肝脏的不利作用。

关键词 有氧耐力运动 被动吸烟 肝脏 IL-1 IL-6 TNF-

中图分类号:R114 文献标识码:A

The Impact of Low-intensity Aerobic Endurance Exercise on the Organizational Inflammatory Cytokines in Rat Liver Passive Smoking

LIU Xiangmei

(College of Sports, Hu'nan Normal University, Changsha, Hu'nan 410012)

Abstract Objective: To investigate the influence of low-intensity aerobic exercise on smoking body inflammatory liver from hepatic tissue factor content. Methods: 48 healthy adult male SD rats were randomly divided into two groups stratified (C), smokers (S), the exercise group (E), sports smoking group (ES), S, ES group of passive smoking, E, ES group nine weeks of aerobic endurance exercise, to detect IL-1, IL-6, TNF- content in liver tissue, and 2 2 factorial analysis of variance. Results: IL-1 content in S group was significantly higher than in group C (P<0.05), ES group was significantly higher than the C and E groups (P<0.05), slightly higher content of E and ES group, S group, IL-6 is slightly lower than in group C (P>0.05), TNF- levels in group E and ES group was significantly higher than the C and S group (P<0.05 ~ 0.01). Factorial analysis of variance showed that smoking factors on IL-1 levels increased (P<0.05), the movement of factors of hepatic tissue TNF- levels increased significantly effect (P<0.01). Conclusion: Cigarette smoke prompted liver tissue with low IL-1 increased IL-6 content, there may reduce inflammation and lipid metabolism, low-intensity aerobic exercise on liver health effects against the adverse effects of smoking on the liver.

Key words aerobic endurance exercise; passive smoking; liver; IL-1; IL-6; TNF-

国内外研究证实,吸烟对机体有多方面的危害,①有氧运动对肝脏有一定的保护作用。②但吸烟或被动吸烟与有氧运动共同作用于机体时,对肝脏影响的研究报道很少,本实验复制大鼠被动吸烟和低强度有氧运动模型,初步探究香烟烟雾和有氧运动二者共同作用于机体,肝脏炎性细胞因子IL-1、IL-6和TNF-的变化,为运动保健提供实验依据。

1 研究材料和方法

1.1 实验动物和分组

健康成年雄性SD大鼠,体重160~200 g。购自湖南农业大学动物中心(许可证号湘scxk,2003-003),为清洁级实验动物。以国家标准啮齿类动物饲料分笼饲养,自由饮食和饮水。实验期间室温为18~27℃,相对湿度40%~55%,每日光照12 h。大鼠静养与观察三日,在坡度为0暗呐芴ㄉ辖兴俣任0 m/min的适应性运动15 min,筛选能训练的大鼠48只。按体重分层随机分为控制对照组(C)、被动吸烟组(S)、有氧运动组(E)、被动吸烟及有氧运动组(ES),每组12只。

1.2 被动吸烟方案

S、ES组置于自制半密闭玻璃箱中,燃烧某烟厂生产的过滤嘴香烟,焦油含量12mg,烟气烟碱量1.0mg,一氧化碳量14mg。每周6天,共持续9周,上午进行,每支烟燃烧5~8 min,20支/d。……

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