心肌缺血和有氧运动训练诱导VEGF表达时间规律的实验研究 |
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引用本文: | 邱 峰,励建安,陆 晓,黄 澎,吴 涛,孟祥博,高 晶,刘 鹏. 心肌缺血和有氧运动训练诱导VEGF表达时间规律的实验研究[J]. 中国康复医学杂志, 2008, 23(3): 193-197 |
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作者姓名: | 邱 峰 励建安 陆 晓 黄 澎 吴 涛 孟祥博 高 晶 刘 鹏 |
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作者单位: | 南京医科大学第一附属医院康复医学科,南京,210029 |
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摘 要: | 摘要 目的:研究心肌缺血和有氧运动训练诱导血管内皮细胞生长因子(VEGF)表达的时间规律。方法:成功建模的健康成年巴马小型猪24只,体重23.7±4.0kg,随机分为对照组、缺血组和运动组。将可控性水囊梗阻器安装在猪冠状动脉钝缘支处,建立可控性猪心肌缺血模型。对照组不进行缺血刺激和有氧运动训练;缺血组进行单纯缺血刺激,2min/次,2次/d,持续缺血刺激8周;运动组除进行缺血刺激外,每天进行一次平板有氧运动训练,每次30min。每两周取动脉血,采用ELISA法检测血液VEGF。实验终点时采用Western Blot检测缺血区心肌VEGF。结果:缺血组第2周血液中VEGF的表达量明显高于实验前(P<0.05),随后进入平台期(P>0.05)。运动组中第2-4周血液中VEGF的表达量持续增高(P<0.05),随后达到平台期(P>0.05)。缺血区心肌VEGF表达和血液VEGF表达呈正相关(r=0.826,P<0.01)。结论:心肌缺血和有氧运动训练诱导的血液VEGF增高分别在第2周和第4周达到高峰,然后进入平台期。关键词 心肌缺血;有氧运动;血管内皮细胞生长因子中图分类号:R493,R541.4 文献标识码:A 文章编号:1001-1242(2008)-03-0193-05
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关 键 词: | 心肌缺血 有氧运动 血管内皮细胞生长因子 心肌缺血模型 有氧运动训练 VEGF 表达量 时间规律 实验前 研究 expression aerobic myocardial ischemia phenomenon Temporal 周达 相关 平台期 结果 缺血区 Western Blot 血液 |
文章编号: | 1001-1242(2008)-03-0193-05 |
收稿时间: | 2007-08-13 |
修稿时间: | 2007-08-13 |
Temporal phenomenon of myocardial ischemia and aerobic exercises-induced VEGF expression: an experimental study |
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Affiliation: | Dept. of Rehabilitation Medicine, the First Affiliated Hospital of Nanjing Medical University, Jiangsu, Nanjing, 210029 |
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Abstract: | Objective:To study the temporal phenomenon of myocardial ischemia and aerobic exercises training induced expression of vascular endothelial growth factor(VEGF) in swine. Method:Twenty-four miniature swines were randomly assigned to control group(CG), ischemia group(IG) and exercises group(EG). A controllable hydraulic balloon catheter was placed at the first marginal branch of left circumflex coronary artery. A model of controllable myocardial ischemia was established. Subjects in IG and EG received transient coronary occlusion for 2min repeated twice a day for 8weeks. Subjects in EG received 30 min aerobic exercises training on treadmill with intermittent high intensity 2min duration which repeated twice a session. Blood samples were obtained every 2 weeks. The ischemic area of the myocardium was also sampled after the completion of 8-week experiment. VEGF in serum were analyzed by ELISA and VEGF in myocardium was measured by Western Blot. Result: VEGF serum level on week 2 in IG was significantly higher than that in CG (P<0.05) and then reached plateau (P>0.05). EG demonstrated the significant increase of VEGF from baseline to week 4 (P<0.05), and then reached the plateau (P>0.05). VEGF in serum was positively correlated that in myocardium(r=0.826, P<0.01). Conclusion: Intermittent myocardial ischemia and aerobic exercises training induced VEGF expression reaches peak on week 2 and week 4 respectively, and then reaches plateau. |
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