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中国临床药理学与治疗学 ›› 2009, Vol. 14 ›› Issue (4): 405-409.

• 基础研究 • 上一篇    下一篇

Smad2/3 和Smad7 蛋白在血中性粒细胞中的表达与哮喘发病关系的实验性研究

童夏生1, 罗冬娇2, 方慧英3, 方丽4, 王恩智1, 陈豪1, 叶辉5   

  1. 1台州中西医结合医院, 温岭317523, 浙江;
    2杭州师范大学钱江学院医学系,杭州310012, 浙江;
    3诸暨市妇幼医院儿科, 诸暨311800, 浙江;
    4诸暨市人民医院儿科,诸暨311800, 浙江;
    5台州市第一医院, 台州317500, 浙江
  • 收稿日期:2008-12-30 修回日期:2009-05-02 发布日期:2020-10-29
  • 作者简介:童夏生,男,硕士,副主任医师,研究方向:儿科呼吸。Tell:13758688128 E-mail:xshtzg@163.com
  • 基金资助:
    浙江省卫生厅基金资助项目(2007-B238);温岭市科协基金资助项目(2006-27)

Experimental study of the relationship between Smad2/3 and Smad7 proteins expressions in blood polymorphonuclear leucocyte and the asthma exacerbation

TONG Xia-sheng1, LUO Dong-jiao2, FANG Hui-ying3, FANG Li4, WANG En-zhi1, CHEN Hao1, YE Hui5   

  1. 1Taizhou Integrated Traditional and Western Medicine Hospital, Wenling 317523, Zhejiang, China;
    2Department of Medical Science, Qianjiang College, Hangzhou Normal University, Hangzhou 310012, Zhejiang, China;
    3Department of Pediatrics, the Maternal and Child Health Hospital of Zhuji, Shaoxing 311800, Zhejiang, China;
    4Department of Pediatrics, People's Hospital of Zhuji, Shaoxing 311800, Zhejiang, China;
    5Department of Pediatrics, the Taizhou First Hospital, Taizhou 317000, Zhejiang, China
  • Received:2008-12-30 Revised:2009-05-02 Published:2020-10-29

摘要: 目的: 观察Smad2/3 和Smad7 蛋白在大鼠哮喘血中性粒细胞(PMN)中的表达,探讨PMN 能否通过Smads 体系参与哮喘气道炎症的发病过程。方法: 卵白蛋白(OVA)诱导大鼠哮喘模型,20 只SD 大鼠随机分成哮喘组和正常对照组,分离纯化血PMN,免疫细胞化学法检测PMN Smad2/3 和Smad7 蛋白的表达水平。结果: 哮喘组(0.142±0.021,OD 值)Smad2/3 蛋白的表达水平显著高于正常对照组(0.081±0.011,OD 值)(P<0.01),而哮喘组(0.125±0.024,OD 值)Smad7 蛋白的表达水平显著低于正常对照组(0.257±0.047,OD 值)(P<0.01)。两者的表达呈显著负相关(n=19,r= -0.891,P<0.01)。结论: Smads 体系在哮喘时处于失衡状态,受体调节型Smad 占优势。哮喘时PMN 合成Smad2 3 和Smad7蛋白的功能增加,PMN 可能部分通过Smads 体系参与哮喘的气道炎症过程。

关键词: 哮喘, Smads, 中性粒细胞, 大鼠

Abstract: AIM: To observe the expressions of Smad2/3 and Smad7 proteins at blood polymorphonuclear leukocyte (PMN) in rats asthma.And to determine whether PMN participate in airway inflammation of asthma via Smads ysterm.METHODS: Rat asthma model was induced by ovalbumin, twenty male Sprague-Danley rats were randomly divided into two groups on average, including asthma group and control group.Blood PMNs were isolated and purified.The expressions of Smad2 3 and Smad7 proteins were detected by immunocytochemical method at blood PMN.RESULTS: The expressions of Smad2 3 protein were significantly higher in asthma group (0.142±0.021, optical density ) than those in control group(0.081±0.011, optical density, P<0.01).But the expressions of Smad7 protein were significantly lower in asthma group(0.125±0.024, optical density) than those in control group(0.257±0.047, optical density, P<0.01).There were significant statistical negtive correlation between the expression of Smad2 3 and Smad7 (n=19, r= -0.891, P<0.01 ).CONCLUSION: Smads system is in imbalanced state in asthma exacerbation.Receptor-regulated Smads is predomination.The synthesis function of PMN about Smad2/3 and Smad7 protein are increased in asthma exacerbation.PMN participated in airway inflammation of asthma may be via Smads systerm.

Key words: asthma, Smads, polymorphonuclear leukocyte, rat

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