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山东大学学报(医学版) ›› 2010, Vol. 48 ›› Issue (2): 23-27.

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高肺血流性肺动脉高压大鼠中CTGF表达及法舒地尔的干预作用

苏宏1,王一彪1,马宇1,朱晓波1,2,王进3,陈鸥4,冯晓丽1   

  1. 1. 山东大学第二医院儿科, 济南 250033; 2. 山东大学医学院, 济南 250012;
    3. 山东中医药大学第二附属医院儿科, 济南 250001;
    4. 山东大学护理学院, 济南 250012
  • 收稿日期:2009-09-28 出版日期:2010-02-16 发布日期:2010-02-16
  • 通讯作者: 王一彪(1963- ),男,教授,主要从事小儿先天性心脏病的研究
  • 作者简介:苏宏(1984- ),女,硕士研究生,主要从事小儿先天性心脏病的研究
  • 基金资助:

    山东省自然科学基金资助课题(Y2007C040),山东省科技攻关计划(2007GG30002001)

Research of CTGF expression and regulation by fasudil in the pulmonary hypertension rat model

SU Hong1, WANG Yibiao1, MA Yu1, ZHU Xiaobo1,2, WANG Jin3, CHEN Ou4, FENG Xiaoli1   

  1. 1. Department of Pediatrics, Second Hospital of Shandong University, Jinan 250033, China;
    2. School of Medicine Shandong University, Jinan 250012, China;
    3. Department of Pediatrics, Second Affiliated Hospital of Shandong University of Chinese Medicine, Jinan 250001, China;
    4. School of Nursing, Shandong University, Jinan 250012, China
  • Received:2009-09-28 Online:2010-02-16 Published:2010-02-16

摘要:

目的  研究结缔组织生长因子(CTGF)在高肺血流性肺动脉高压大鼠模型中的表达及法舒地尔对其的调控作用。方法  将75只Wistar大鼠分为对照组、2个分流组和2个分流+法舒地尔干预组,每组15只。对照组于第4周测量右心室平均收缩压(RVSP)、2个分流组和2个分流+法舒地尔干预组分别于第2周和第4周测量RVSP。采用Western blot法和免疫组化检测各组肺动脉中CTGF、转化生长因子β1(TGF-β1)的含量以及Rho激酶的活性。结果  分流组大鼠第2周及第4周肺动脉明显增厚(P<0.01)、重塑, RVSP增加(P<0.01),CTGF及TGF-β1表达增加(P<0.01),且Rho激酶活性增强(P<0.01)。应用法舒地尔干预后,肺动脉Rho激酶活性明显降低(P<0.01),且CTGF和TGF-β1在肺动脉中的表达较分流组明显降低(P<0.01)、肺血管重塑较分流组显著减轻(P<0.01)。结论  CTGF,TGF-β1参与了高肺血流性肺动脉高压的发病过程,且Rho激酶信号转导通路对肺血管的重塑及CTGF,TGF-β1的表达有着重要的调控作用。

关键词: 结缔组织生长因子;转化生长因子β1;法舒地尔;肺动脉高压;大鼠,Wistar

Abstract:

Objective  To investigate the expressions of connective tissue growth factor(CTGF) and transforming growth factor-β1(TGF-β1) in pulmonary vascular, and to find if fasudil, a Rho kinase inhibitor, has  protective effect on this high blood flow induced pulmonary hypertension model and its possible mechanism. Methods  The rat model of pulmonary hypertension was established by right carotid artery-external jugular vein shunt operation. 75 male Wister rats were randomly divided into the control group, the 2-week shunt model group, the 4-week shunt model group, the 2-week fasudil group and the 4-week fasudil group (15 in each group). The right ventricle systolic pressure (RVSP) and small pulmonary arterial morphologic changes in each group were studied with a microscope for morphometric analysis. The Expressions of CTGF and TGF-β1 were investigated by Western blot and immunohistochemistry. Results  Pulmonary arterial morphologic changes in the 2 shunt groups showed  that WT%, RVSP, CTGF expression and TGF-β1 expression increased significantly. However in the 2 fasudil groups, CTGF and TGF-β1 expressions deceased more significantly than in the corresponding shunt groups. Conclusion  Fasudil may partly prevent the development of pulmonary hypertension and pulmonary vascular remodeling and decrease expressions of CTGF and TGF-β1 in high flow induced pulmonary hypertension.

Key words: Connective tissue growth factor; Transforming growth factor-β1; Fasudil; Pulmonary hypertension; Rats, Wistar

中图分类号: 

  • R725.4
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