早期和晚期有氧运动对野百合碱诱导肺动脉高压大鼠右心衰竭的影响  

Effects of early and late aerobic exercise on right heart failure induced by monocrotaline in rats with pulmonary hypertension

作　　者：孙园 王庆博 皮亦华 陆春敏 徐传仪 张艳 Sun Yuan;Wang Qingbo;Pi Yihua;Lu Chunmin;Xu Chuanyi;Zhang Yan(Lianyungang Normal College,Lianyungang 222006,Jiangsu Province,China;Department of Sports,Guangxi University of Chinese Medicine,Nanning 530021,Guangxi Zhuang Autonomous Region,China)

机构地区：[1]连云港师范高等专科学校,江苏省连云港市222006 [2]广西中医药大学体育部,广西壮族自治区南宁市530021

出　　处：《中国组织工程研究》2024年第2期177-185,共9页Chinese Journal of Tissue Engineering Research

基　　金：广西教育科学“十三五”规划课题(2017C386),项目负责人:张艳。

摘　　要：背景:临床研究表明,有氧运动是肺动脉高压患者临床治疗的重要补充,能够缓解病情、增加运动耐量并改善生活质量。然而,尚不清楚处于肺动脉高压不同阶段的患者是否可以从运动训练中同等受益。目的:对比早期或晚期有氧运动训练对肺动脉高压大鼠右心衰竭的干预效果,并探讨其可能机制。方法:将60只雄性Wistar大鼠按照随机数字表法分为对照组、模型安静组、模型早期运动组和模型晚期运动组,每组15只。除对照组外,其余3组通过腹腔注射野百合碱(60 mg/kg)制作肺动脉高压模型。模型早期运动组造模后进行8周的跑台有氧运动(60%最大跑速,60 min/d、5 d/周),模型晚期运动组造模后2周进行6周的跑台有氧运动,对照组和模型安静组在鼠笼内安静饲养8周。训练结束后,进行运动能力、右心室血液动力学、心肺功能、心肺病理组织学、心肌线粒体活性氧水平、心肌线粒体呼吸链复合体活性及心肌组织蛋白表达检测。结果与结论:①与模型安静组比较,模型早期、晚期运动组大鼠的运动能力和右心室功能改善(P<0.05),心肌胶原含量及内皮素1、肿瘤坏死因子α/白细胞介素10比值、β-肌球蛋白重链/α-肌球蛋白重链比值下降(P<0.05),血管内皮生长因子和肌浆网钙-三磷酸腺苷酶的蛋白表达量升高(P<0.05),线粒体活性氧免疫荧光强度和3-硝基酪氨酸的蛋白表达量下降(P<0.05),复合体Ⅰ、Ⅱ、Ⅳ和Ⅴ活性升高(P<0.05),然而右心室最大压力、肺动脉加速时间和肺动脉管壁面积/血管总面积比值无明显变化(P>0.05);②与模型晚期运动组比较,模型早期运动组进一步改善了大鼠的运动能力和右心室功能,并下调心肌胶原含量、脑钠肽蛋白表达量及肿瘤坏死因子α/白细胞介素10比值、β-肌球蛋白重链/α-肌球蛋白重链的比值(P<0.05);③结果显示,尽管肺动脉高压大鼠肺血管重构和右心超负荷持BACKGROUND:Clinical studies have shown that aerobic exercise is an important supplement to the clinical treatment of patients with pulmonary hypertension,which can alleviate the disease condition,increase exercise tolerance and improve the quality of life.However,it is not clear whether patients at different stages of pulmonary hypertension can benefit equally from exercise training.OBJECTIVE:To compare the intervention effects of early or late aerobic training on right heart failure in rats with pulmonary hypertension and explore its possible mechanism.METHODS:Sixty male Wistar rats were randomly divided into control group,model sedentary group,model early exercise group and model late exercise group,with 15 rats in each group.The model of pulmonary hypertension was established by intraperitoneal injection of monocrotaline(60 mg/kg)in the latter three groups.The model early exercise group was given 8 weeks of treadmill aerobic exercise(60%maximum running speed,60 minutes per day,5 days a week)after modeling,while the model late exercise group was trained for 6 weeks after 2 weeks of modeling.The control and model sedentary groups were fed quietly in the rat cage for 8 weeks.After training,the exercise performance,right ventricular hemodynamics,cardiopulmonary function,cardiopulmonary histopathology,reactive oxygen species level in mitochondria,activity of mitochondrial respiratory chain complex and expressions of myocardial tissue proteins were detected.RESULTS AND CONCLUSION:Compared with the model sedentary group,exercise performance and right ventricular function improved(P<0.05),myocardial collagen content,endothelin-1,tumor necrosis factor-α/interleukin-10 ratio andβ-myosin heavy chain/α-myosin heavy chain ratio decreased(P<0.05),vascular endothelial growth factor and sarcoplasmic reticulum calcium-adenosine triphosphate enzyme expression increased(P<0.05),immunofluorescence intensity of mitochondrial reactive oxygen species and the protein expression of 3-nitrotyrosine decreased(P<0.05),the activities o

关 键 词：肺动脉高压 有氧运动 心脏重构 炎症 氧化应激 运动能力 右心衰竭 

分 类 号：R459.9[医药卫生—治疗学] R-331[医药卫生—临床医学] R541.5