J4 ›› 2010, Vol. 36 ›› Issue (4): 656-659.

• 基础研究 • 上一篇    下一篇

锌制剂对糖尿病大鼠肾脏和肾脏组织中VEGF、MT及MMP-9表达的影响

何明蕊1|董宇2|付彤3|孙珉丹1   

  1. 1.吉林大学第一医院泌尿系统疾病诊治中心|吉林 长春 130021;2. 吉林大学第一医院眼科,吉林 长春 130021;3. 吉林大学第一医院乳腺外科,吉林 长春 130021
  • 收稿日期:2010-03-28 出版日期:2010-07-28 发布日期:2010-07-28
  • 通讯作者: 孙珉丹(Tel:0431-88782902, E-mail:mindansun@sina.com) E-mail:mindansun@sina.com
  • 作者简介:何明蕊(1983-)|女|山东省青岛市人|在读医学硕士|主要从事肾小球疾病发病机制研究。
  • 基金资助:

    吉林省科技厅科研基金资助课题(20050528)

Effects of Zn on |kidney of dibetic rats and expessions of VEGF,MT and MMP-9 in kidney tissues

HE Ming-rui1, DONG Yu2, FU Tong3, SUN Min-Dan2   

  1. 1.Center of |Urological Diseases,First Hospital,Jilin University,Changchun 130021,China;2. Department of Ophthalmology,First Hospital,Jilin University,Changchun |130021, China|3. Department of |Breast Surgery,First Hospital,Jilin University,Changchun 13002,China
  • Received:2010-03-28 Online:2010-07-28 Published:2010-07-28

摘要:

目的:通过观察正常及糖尿病大鼠肾脏组织中血管内皮生长因子(VEGF)、金属硫蛋白(MT)及基质金属蛋白酶9(MMP-9)的表达,阐明补充外源性锌(Zn)制剂对糖尿病大鼠肾脏和肾脏组织中VEGF、MT及MMP-9表达的影响。方法: 将48只Wistar大鼠随机分为正常对照组(NC组)、阴性对照组(STZ组)、外源性锌干预糖尿病组(STZ+Zn组)及外源性锌干预正常组(Zn组),每组12只。其中STZ组及STZ+Zn组腹腔注射链脲菌素(STZ)制成糖尿病模型, STZ+Zn组、Zn组每周2次经口灌胃5 mg?kg-1的锌制剂,共16周。取双肾,计算肾指数;HE染色及免疫组织化学染色观察大鼠肾脏病理学改变及MMP-9、VEGF和MT在肾脏组织中的表达。结果:与NC组比较,STZ组和STZ+Zn组大鼠肾指数升高(P<0.05);与STZ组比较,STZ+Zn组大鼠肾指数升高(P<0.05);Zn组肾指数与NC组比较差异无显著性(P>0.05)。大鼠肾脏组织中存在VEGF、 MT 及MMP-9的表达,其中MMP-9和VEGF主要表达在远端肾小管,MT主要表达在近端肾小管;NC组、STZ组、STZ+Zn组及Zn组之间比较肾脏组织中VEGF、MT和MMP-9表达差异无显著性(P>0.05)。结论:锌制剂可以导致糖尿病大鼠肾指数增大,但不影响健康小鼠的肾指数;肾脏组织中存在VEGF、MT及MMP-9的表达;外源性锌制剂干预后VEGF、MT及MMP-9在糖尿病模型中的表达无明显变化。

关键词: 血管内皮生长因子;金属硫蛋白;基质金属蛋白酶9;锌;糖尿病, 实验性

Abstract:

Abstract:Objective By observing the expressions of vascular endothelial growth factor (VEGF),metallothionein(MT),and matrix metalloprteinase-9 (MMP-9) in the  kidneys of normal and diabetic rats,the influences of exogenous Zn    in kindey and the expessions of VEGF,MT and MMP-9 in kidney tissues of diabetic rats were explored. Methods   Forty-eight Wistar rats were randomly divided into four groups(n=12) :   normal control  (NC) group,negative control (STZ)group,external Zn intervention diabetic (STZ+Zn) group and external Zn intervention normal (Zn) group. The rat diabetic models were made through intraperitoneal injection of streptozotocin(STZ) in STZ and STZ+Zn groups.The rats  in STZ+Zn and Zn groups were orally injected with 5 mg?kg-1of Zn sulphate twice a week. After fed for 16 weeks,the kidneys of  rats were obtained and  organ coefficient of kidney was calculated.The histopathological  changes of  kindeys  and the expressions of MMP-9,VEGF and MT in kidney tissues were detected with immunohistochemistry method. Results Compared with NC group,the organ coefficients  in STZ group and STZ+Zn group were increased (P< 0.05). Compared with STZ group,the organ coefficient in STZ+Zn group was increased(P<0.05). There was no difference of organ coefficient between STZ group and Zn group (P>0.05).The MMP-9,VEGF, and MT expressed in kidneys of rats.MMP-9 and VEGF mainly expressed in the distal renal tubule;and MT mainly expressed in the proximal renal tubulei. there was no difference  of the expressions of MMP-9,VEGF, and MT in kidney tissues between various groups(P>0.05).Conclusion External Zn intervention can  increase the organ cofficient of kidney in diabetic rats,but dosen’t affect the organ coefficient of kindey in normal rats.  The expressions of  MMP-9,VEGF, and MT  in kidney tissues of  rats have no changes after external Zn intervention.

Key words: vascular endothelial growth factor;metallothionein, matrix metalloproteinase-9;Zn;diabetes mellitus,experime

中图分类号: 

  • R587.1