中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (27): 4098-4104.doi: 10.3969/j.issn.2095-4344.2016.27.021

• 泌尿系统损伤动物模型 Animal models of urinary system damage • 上一篇    

血小板反应蛋白1在纤维化模型大鼠肾组织中的表达

杜俊文,吴  韬,张  坤,苏白玉,卢彩萍,王伟超,雷  琳,郭静霞   

  1. 石家庄市第一医院,河北省石家庄市  050000
  • 修回日期:2016-04-24 出版日期:2016-06-30 发布日期:2016-06-30
  • 通讯作者: 王伟超,石家庄市第一医院,河北省石家庄市 050000
  • 作者简介:杜俊文,女,1976年生,河北省人,汉族,硕士,副主任医师,主要从事内分泌及代谢疾病研究。
  • 基金资助:

    2013年石家庄市科学技术研究与发展指导计划(131462423)

Thrombospondin-1 expression in the kidney of a rat model of fibrosis

Du Jun-wen, Wu Tao, Zhang Kun, Su Bai-yu, Lu Cai-ping, Wang Wei-chao, Lei Lin, Guo Jing-xia   

  1. Shijiazhuang First Hospital, Shijiazhuang 050000, Hebei Province, China
  • Revised:2016-04-24 Online:2016-06-30 Published:2016-06-30
  • Contact: Wang Wei-chao, Shijiazhuang First Hospital, Shijiazhuang 050000, Hebei Province, China
  • About author:Du Jun-wen, Master, Associate chief physician, Shijiazhuang First Hospital, Shijiazhuang 050000, Hebei Province, China
  • Supported by:

    the Shijiazhuang Science and Technology Research and Development Guide Project in 2013, No. 131462423

摘要:

文章快速阅读:

文题释义:
肾脏纤维化:
是一种病理生理改变,是肾脏的功能由健康到损伤,再到损坏,直至功能丧失的渐进过程。肾脏由于受到创伤、感染、炎症、血循环障碍,以及免疫反应等多种致病因素刺激,其固有细胞受损,发展到后期出现大量胶原沉积和积聚,造成肾实质逐渐硬化,形成瘢痕,导致肾脏完全丧失脏器功能。
血小板反应蛋白1:是分泌到细胞表面的一种相对分子质量450 000的标准化三聚体糖蛋白,能够进入到各种组织中,参与激活潜在的转化生长因子β1,不仅是转化生长因子β1的内源激活因子,还是重要的抗血管生成因子,在纤维化肾脏中阻碍肾脏的自身修复。

 

摘要
背景:
在实验性炎症性肾脏疾病模型中血小板反应蛋白1是转化生长因子β1重要的内源活化剂。转化生长因子β1是在许多不同的炎性疾病过程中,导致组织纤维化的主要细胞因子,特别是在肾脏疾病。
目的:探讨血小板反应蛋白1在纤维化肾组织中的表达。
方法:将健康雄性SD大鼠随机分为假手术组与模型组,模型组大鼠右侧输尿管进行结扎,制备大鼠肾纤维化模型。术后3周,每周取血、取尿,用ELISA与Bradford法检测血清肌酐、血尿素氮水平及尿蛋白含量;处死大鼠后,取结扎侧肾脏固定,用Western blot方法检测血管内皮生长因子、转化生长因子β1和血小板反应蛋白1蛋白的表达,苏木精-伊红检测术后肾组织病理结构改变情况。
结果与结论:①造模后1周,模型组大鼠尿蛋白、血清肌酐与尿素氮水平显著高于假手术组(P < 0.05),3周后,各指标差异更显著(P < 0.01),表明肾功能损伤加重;②模型组转化生长因子β1蛋白与血小板反应蛋白1蛋白表达量明显高于假手术组,而血管内皮生长因子蛋白表达量显著低于假手术组;③苏木精-伊红染色结果显示,结扎肾小管后大鼠肾组织严重病变。④结果提示:血小板反应蛋白1蛋白在大鼠纤维化肾组织中表达水平显著升高,且其表达水平与血管内皮生长因子蛋白和转化生长因子β1蛋白密切相关,可能在肾纤维化中发挥重要作用。

 

 

关键词: 实验动物, 肝肾损伤与修复动物模型, 血小板反应蛋白1, 血管内皮生长因子, 转化生长因子β1, 肾纤维化

Abstract:

BACKGROUND: Thrombospondin-1 is an important endogenous activator of transforming growth factor beta 1 in this experimental inflammatory kidney disease model. Transforming growth factor beta 1 is considered the major cytokine that causes tissue fibrosis in many different inflammatory disease processes, in particular in renal disease.
OBJECTIVE: To investigate the expression of thrombospondin-1 on renal fibrosis in rats.
METHODS: Healthy male Sprague-Dawley rats were randomly divided into sham surgery group and model group. In the model group, right ureters of rats were ligated to construct models of renal fibrosis. 3 weeks after surgery, blood and urine were obtained weekly. Enzyme linked immunosorbent assay and Bradford method were used to detect the contents of serum creatinine, blood urea nitrogen and urinary protein. After rats were sacrificed, kidneys were fixed. Western blot assay was utilized to identify the expression of vascular endothelial growth factor, transforming growth factor beta 1 and thrombospondin-1 protein. Hematoxylin-eosin staining was applied to detect the changes in pathological structure of the kidney after surgery.
RESULTS AND CONCLUSION: (1) One week after model induction, urinary protein, serum creatinine and urea nitrogen levels were significantly higher in the model group than in the sham surgery group (P < 0.05). Three weeks later, the difference in each index was significant (P < 0.01), which showed that the injury of the kidney was aggravated. (2) Transforming growth factor beta 1 protein and thrombospondin-1 expression was significantly higher in the model group than in the sham surgery group, but vascular endothelial growth factor protein expression was significantly lower in the model group than in the sham surgery group. (3) Hematoxylin-eosin staining results demonstrated that severe pathological changes of renal tissue in rats were detected after ligation of renal tubule. (4) These results confirmed that thrombospondin-1 expression increased in renal tissue, and its expression was strongly associated with vascular endothelial growth factor protein and transforming growth factor beta 1, which may play an important role in the renal fibrosis.

 

 

Key words: Fibrosis, Nephrosis, Vascular Endothelial Growth Factors, Transforming Growth Factor beta 1;Tissue Engineering

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