中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (5): 701-706.doi: 10.3969/j.issn.2095-4344.2016.05.016

• 内分泌系统损伤与修复动物模型 Animal models of endocrine system injury and repair • 上一篇    下一篇

β-酪啡肽7对链脲佐菌素诱导糖尿病肾病模型大鼠的肾保护

高 燕1,袁鲁亮2,张海松1   

  1. 1河北大学附属医院肾内科,河北省保定市 071000;2解放军66165部队卫生队,河北省保定市 071000
  • 收稿日期:2015-12-04 出版日期:2016-01-29 发布日期:2016-01-29
  • 通讯作者: 张海松,主任医师,河北大学附属医院肾内科,河北省保定市 071000
  • 作者简介:高燕,女,1976年生,河北省保定市人,汉族,2004年河北医科大学毕业,硕士,副主任医师,副教授,主要从事肾小球疾病及肾小管间质肾病方面的研究。
  • 基金资助:
    河北省医学适用技术跟踪项目(GL201311)

Protective effects of beta-casomorphin-7 on renal injury in a rat model with streptozotocin-induced diabetic nephropathy

Gao Yan1, Yuan Lu-liang2, Zhang Hai-song1   

  1. 1Department of Nephrology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China; 2Health Team, PLA 66165 Troops, Baoding 071000, Hebei Province, China
  • Received:2015-12-04 Online:2016-01-29 Published:2016-01-29
  • Contact: Zhang Hai-song, Chief physician, Department of Nephrology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
  • About author:Gao Yan, Master, Associate chief physician, Associate professor, Department of Nephrology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
  • Supported by:

    the Hebei Province Medical Application Technology Tracking Project, No. GL201311

摘要:

文章快速阅读:

 

文题释义:
糖尿病肾病:是由多种病因引起以慢性高血糖为特征的代谢紊乱。高血糖是由于胰岛素分泌或作用的缺陷,或者两者同时存在而引起。除碳水化合物外,尚有蛋白质、脂肪代谢异常。常见于病史超过10年的患者。约30%的1型糖尿病和20%-50%的2型糖尿病会发生糖尿病肾病。

链脲佐菌素:是一种氨基葡萄糖-亚硝基脲,是一种DNA烷基化试剂,能通过葡萄糖运转蛋白2葡萄糖转运蛋白独自进入细胞。对胰腺胰岛胰岛素诱发的β-细胞具毒性。链脲佐菌素对葡萄糖运转蛋白2阳性神经内分秘肿瘤细胞有毒性作用。链脲佐菌素可对一定种属动物的胰岛β细胞有选择性破坏作用,能诱发许多动物产生糖尿病。

 

背景:研究发现β-酪啡肽7有对糖尿病模型大鼠减轻肾小管上皮细胞的氧化及降血糖的作用,但关于β-酪啡肽7对糖尿病肾病作用机制的研究比较少。
目的:探讨β-酪啡肽7对糖尿病肾病模型大鼠肾损伤的作用。
方法:将30只大鼠随机以n=10等分为对照组、模型组和β-酪啡肽7组。构建糖尿病模型大鼠20只,造模成功后模型组和β-酪啡肽7组模型大鼠腹腔注射链脲佐菌素(60 mg/kg),对照组腹腔注射等量柠檬酸液,β-酪啡肽7组模型大鼠给予β-酪啡肽7灌胃30 d,模型组和对照组给予等量生理盐水灌胃。
结果与结论:①与对照组相比,模型组大鼠胰岛素水平降低,血糖、尿糖、尿蛋白、血清肌酐、血清尿素氮水平以及肾脏中Ⅰ型胶原蛋白和Ⅳ型胶原蛋白的mRNA和蛋白表达水平增加。②与模型组相比,β-酪啡肽7组模型大鼠上述指标明显恢复。表明β-酪啡肽7对糖尿病肾病模型大鼠肾损伤有保护作用。  ORCID: 0000-0002-1700-5567(张海松)

关键词: 实验动物, 内分泌系统损伤与修复动物模型, 糖尿病, 链脲佐菌素, 糖尿病肾病, β-酪啡肽7, 胰岛素, 肾损伤, 并发症

Abstract:

BACKGROUND: Studies have found that β-casomorphin 7 can lessen oxidation of renal tubular epithelial cells and lower blood sugar in a rat model of diabetes. There is a few studies concerning the effect of β-casomorphin-7 on diabetic nephropathy.
OBJECTIVE: To explore the effects of β-casomorphin-7 on renal injury in a rat model of diabetic nephropathy.
METHODS: The 30 rats were equally and randomly divided into control group, model group and β-casomorphin-7 group. Twenty rat models of diabetes were established. In the model and β-casomorphin-7 groups, rats were intraperitoneally injected with streptozotocin (60 mg/kg). In the control group, rats were intraperitoneally injected with an equal volume of citric acid. Rats in the β-casomorphin-7 group were intragastrically administered β-casomorphin-7 for 30 days. Rats in the model and control groups were given an equal volume of saline by intragastric administration.
RESULTS AND CONCLUSION: (1) Compared with the control group, insulin levels decreased, glucagon, blood glucose, urine glucose, urine protein, serum creatinine, serum urea nitrogen levels, mRNA and protein expression levels of type I collagen and type IV collagen in kidney increased in the model group. (2) Compared with the model group, above indexes were apparently recovered in the β-casomorphin-7 group. These findings indicate that β-casomorphin-7 has a protective effect on renal injury in diabetic nephropathy rats.