吉林大学学报(医学版)

• 基础研究 • 上一篇    下一篇

普乐可复对IgA肾病大鼠肾组织中MMP-9和TIMP-1表达水平的影响及其机制

刘宝玲1,2,付彤3,刘冰4,孙珉丹1   

  1. 1.吉林大学第一医院肾内科,吉林  长春 130021;2.第一汽车集团总医院肾内科,吉林  长春 130011;3.吉林大学第一医院乳腺外科,吉林  长春130021; 4.吉林大学第一医院输血科,吉林  长春  130021
  • 收稿日期:2013-09-04 出版日期:2014-03-28 发布日期:2014-05-28
  • 通讯作者: 孙珉丹(Tel:0431-85782902,E-mail:mindansun@sina.com) E-mail:mindansun@sina.c
  • 作者简介:刘宝玲(1982-),女,辽宁省大连市人,医师,医学硕士,主要从事IgA肾病发病机制及治疗的研究。
  • 基金资助:

    吉林省科技厅科研基金资助课题(201015149)

Influence of tacrolimus on expression levels of MMP-9 and TIMP-1 in kidney tissue of  rats with IgA nephropathy

LIU Bao-ling1,2,FU Tong3,LIU Bing4,SUN Min-dan1   

  1. 1.Department of Nephrology,First Hospital,Jilin University,Changchun 130021,China;2.Department of Nephrology,FAW General Hospital,Changchun 130011,China 3. Department of Breast Surgery,First Hospital,Jilin University,Changchun 130021,China;4.Department of Blood Transfusion,First Hospital,Jilin University,Changchun 130021,China
  • Received:2013-09-04 Online:2014-03-28 Published:2014-05-28

摘要:

目的:通过建立大鼠IgA肾病(IgAN)模型,观察普乐可复对IgAN大鼠肾组织中基质金属蛋白酶9(MMP-9)和金属蛋白酶组织抑制剂1(TIMP-1)表达的影响,探讨普乐可复对肾小球纤维化的治疗作用及可能的机制,为临床针对性治疗IgAN提供依据。方法:取40只雄性SD大鼠,采用牛血清白蛋白(BSA)+脂多糖(LPS)+四氯化碳(CCl4)方法建立实验性IgAN大鼠模型,将造模成功大鼠分为模型组(n=8)、普乐可复组(n=8)、贝那普利组(n=8)、贝那普利+普乐可复组(n=8),并设正常对照组(n=10)。成模后分别给予上述各组大鼠以蒸馏水、普乐可复、贝那普利、贝那普利+普乐可复和蒸馏水灌胃,测定各组大鼠肾组织中MMP-9和TIMP-1的灰度值及MMP-9/TIMP-1比值。结果:正常对照组大鼠肾组织中MMP-9和TIMP-1呈弱阳性表达,贝那普利+普乐可复组、普乐可复组、贝那普利组及模型组大鼠肾组织可见逐渐递增的棕黄色染色区,模型组大鼠肾组织中MMP-9和TIMP-1呈强阳性表达,贝那普利+普乐可复组、普乐可复组和贝那普利组大鼠MMP-9及TIMP-1呈阳性表达,但较模型组表达弱,较正常对照组表达强。正常对照组大鼠MMP-9/TIMP-1比值接近1,模型组大鼠MMP-9/TIMP-1比值最高,贝那普利+普乐可复组、普乐可复组、贝那普利组大鼠MMP-9/TIMP-1比值低于模型组 (P<0.05),贝那普利+普乐可复组大鼠肾组织中MMP-9/TIMP-1比值高于贝那普利组和普乐可复组 (P<0.05),普乐可复组MMP-9/TIMP-1比值高于贝那普利组(P<0.05)。结论:普乐可复可下调大鼠肾组织中MMP-9和TIMP-1的表达水平,纠正MMP-9/TIMP-1失衡,普乐可复可能对肾脏纤维化有一定治疗作用。

关键词: IgA肾病, 普乐可复, 基质金属蛋白酶9, 金属蛋白酶组织抑制剂1

Abstract:

Abstract:Objective To observe the influence of tacrolimus in the expressions of matrix metalloproteinase-9(MMP-9)  and  tissue inhibitor of metalloproteinase-1(TIMP-1) in kidney tissue of   the  rats  with IgA nephropathy (IgAN), and to explore the treatment effect of tacrolimus on glomerular fibrosis  and its mechnism,and to provide basis for IgAN treatment.Methods 40 healthy male SD Wistar were selected to set up experimental IgAN rat models  with bovine serum albumin (BSA)+ lipopolysaccharide(LPS)+ carbon tetrachloride (CCl4).The IgAN model rats were  randomly divided into  model group (n=8),tacrolimus group (n=8),benazepril group (n=8),benazepril+ tacrolimus group (n=8);at the same time  normal control  group was  established(n=10).The rats in  model group,tacrolimus group,benazepril group,benazepril+tacrolimus group,and control group were given distilled water,tacrolimus,benzepril,benazepril+tarcolimus and distilled water,respectively;the levels of MMP-9,TIMP-1,and MMP-9/TIMP-1 in kidney  tissue of the rats in various groups were detected.Results Compared with normal group,the kidney tissue of the rats in benazepril +tacrolium group,tacrolium group,benazepril group and  model group showed claybank  dyeing area and the expressions  of MMP-9 and TIMP-1 in   kidney tissue of the rats in model group were strong positive;the expressions  of MMP-9 and TIMP-1 in   kidney tissue of  the rats in benazepril+tacrolimus group,tacrolimus group,and benazepril group  were  positive.The ratio of MMP-9/TIMP-1 in kidney tissue of the  rats in normal control group was closed to 1;the ratio of MMP-9/TIMP-1 in kidney tissue of the  rats in model group was the highest;the ratio of MMP-9/TIMP-1 in kidney tissue of the rats in benazepril+tacrolimus group,and  tacrolimus group,benazepril group were lower than that in  model group(P<0.05);the ratio of  MMP-9/TIMP-1 in benazepril+tacrolimus group was statistically higher  than that  in tacrolimus  group and benazepril group(P<0.05);the ratio of MMP-9/TIMP-1 in tacrolimus group  was statistically higher than that in  benazepril group (P<0.05).Conclusion Tacrolimus can decrease the levels of MMP-9 and TIMP-1  in  kidney tissue  of the rats and  correct the imbalance of MMP-9 / TIMP-1;tacrolium has therapeutic effect on glomerular fibrosis.

Key words: IgA nephropathy, tacrolimus, matrix metalloproteinase-9, tissue inhibitor of metalloproteinase-1
 

中图分类号: 

  • R334.1