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山东大学学报(医学版)

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葡萄子原花青素对糖尿病大鼠心肌超微结构的影响

程 梅,高海青,许 玲,李保应,李宪花   

  1. 山东大学齐鲁医院老年病科, 山东 济南 250012
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-04-24 发布日期:2007-04-24
  • 通讯作者: 程 梅

Changes of myocardial ultrastructure induced by grape seed proanthocyanidin extracts in STZ diabetic rats

CHENG Mei, GAO Hai-qing, XU Ling, LI Bao-ying, LI Xian-hua   

  1. Department of Geriatrics, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-04-24 Published:2007-04-24
  • Contact: CHENG Mei

摘要: 目的:观察葡萄子原花青素(grape seed proanthocyanidin extracts,GSPE)对链脲佐菌素(streptozotocin,STZ)糖尿病大鼠血浆糖基化终末产物(advanced glycation end products,AGEs)、心肌超微结构的影响;探讨GSPE对STZ糖尿病大鼠心肌的保护作用。方法:雄性Wistar大鼠尾静脉注射0.1%STZ以建立糖尿病模型,成模后随机分为2组,糖尿病对照组(DM1组,n=8)和糖尿病GSPE治疗组(GSPE250?mg/(kg·d),DM2组,n=12),另设2组,正常对照组(C1组,n=10)和正常GSPE治疗组(C2组,n=10)。24周后采血测血糖、糖化血红蛋白(glycosylated hemoglobin, HbA1c)、AGEs,电镜观察心肌超微结构变化。结果:DM2组AGEs较DM1组明显降低(t=2.792, P=0.02);DM1组肌原纤维和线粒体排列紊乱,经GSPE治疗后DM2组明显减轻。结论:GSPE能够抑制STZ糖尿病大鼠非酶糖基化反应,对其心脏超微结构有一定保护作用。

Abstract: Objective: To observe the effect of grape seed proanthocyanidin extracts (GSPE)on plasma advanced glycation end products (AGEs) and myocardial ultrastructures of streptozotocin(STZ) induced diabetic rats. Methods: Male Wistar rats were subjected to 0.1% STZ through the tail vein to induce diabetics.Then, they were randomly divided into two groups: diabetic model (DM) group (DM1,n=8)and GSPEtreatment diabetic group (DM2,n=12, 250?mg·kg-1·d-1). Nondiabetic Wistar rats were enrolled in other two groups: the control group(C1, n=10) and the GSPE treatment group(C2 group, n=10, 250?mg·kg-1·d-1). After 24 weeks, all rats were killed, and the fasting plasma glucose, glycosylated hemoglobin and AGEs were determined. Changes of myocardial ultrastructure were produced by an electronic microscope. Result: Plasma AGEs of DM2 group was lower than that of DM1 group (t=2.792,P=0.02). The myofibrillaes and the chondriosomees disordered in DM1 group, but changed after the GSPE treatment. Conclusions: GSPE can inhibit nonenzymatic reactions of glycosylation in STZ-induced diabetic rats and protect the myocardial ultrastructure.

Key words: Grape seed proanthocyanidin extracts, Diabetic cardiomyopathy, Glycosylation end products, advanced, Myocardial ultrastructure, Rats, Wistar

中图分类号: 

  • R542.2
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