基础医学与临床 ›› 2014, Vol. 34 ›› Issue (12): 1676-1681.

• 研究论文 • 上一篇    下一篇

糖尿病小鼠皮肤与胰腺微循环功能受损

刘明明1,张晓艳2,李炳蔚2,王冰1,孟凡星1,赵永刚1,盛友明1,李宏伟1,修瑞娟1   

  1. 1. 中国医学科学院微循环研究所
    2. 中国医学科学院北京协和医学院微循环研究所
  • 收稿日期:2014-04-28 修回日期:2014-06-23 出版日期:2014-12-05 发布日期:2014-11-25
  • 通讯作者: 修瑞娟 E-mail:xiurj@aliyun.com
  • 基金资助:
    2013年中国医学科学院微循环研究所公益性科研院所基本科研业务费专项基金

Dysfunction of cutaneous and pancreatic microcirculation in diabetic mice

  • Received:2014-04-28 Revised:2014-06-23 Online:2014-12-05 Published:2014-11-25

摘要: 目的 探讨糖尿病小鼠微循环功能变化。方法 BALB/c小鼠随机分为对照组(n = 10)和糖尿病组(n = 20)。常规STZ制备糖尿病模型,心脏灌流后取材,HE染色观察胰腺组织及胰岛微血管形态学及病理改变。用免疫组织化学染色,观察胰岛及胰岛微血管内皮细胞的形态学及病理改变、胰岛素及胰岛微血管PECAM-1的表达。用Moor LDLS检测皮肤微循环血流灌注水平;用Moor VMS-LDF检测胰腺微循环血流灌注及微血管自律运动功能。结果 糖尿病小鼠胰岛形态不规则,完整性破坏;胰岛微血管内皮细胞PECAM-1表达失去连续性;胰岛中胰岛素染色阳性面积显著低于对照组(P < 0.05)。糖尿病组小鼠皮肤微循环总血流灌注显著降低(P < 0.01)。糖尿病组小鼠胰腺微血管自律运动频率和振幅均显著低于对照组(P < 0.01,P < 0.001)。结论 STZ诱导的BALB/c糖尿病小鼠微循环功能受损。

关键词: 糖尿病, 微循环, 胰腺

Abstract: Objective To investigate changes of microcirculation function in diabetic mice. Methods 30 BALB/c mice were divided into two groups randomly, control group (n = 10) and diabetic group (n = 20). Diabetic mice were induced by STZ. HE and immunohistochemistry staining were employed to observe morphological and pathological of pancreas, islet and islet endothelia cell. The expression of insulin and PECAM-1 were detected by immunohistochemistry staining. Cutaneous blood perfusion was evaluated by Moor LDLS, while pancreatic blood perfusion and pancreatic micro-vessels vasomotion were detected by Moor VMS. Results Compared with control group, diabetic mice had irregular shaped islets, discontinuous expression of PECAM-1, lower insulin positive area per islet (P < 0.05), decreased cutaneous blood perfusion and total flux (P < 0.01), decreased frequency of vasomotion of pancreatic micro-vessels and amplification (P < 0.01, P < 0.001, respectively). Conclusion Microcirculatory function was impaired in STZ induced BALB/c diabetic mice.

Key words: diabetes mellitus, microcirculation, pancreas

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