食品科学 ›› 2013, Vol. 34 ›› Issue (7): 245-249.doi: 10.7506/spkx1002-6630-201307051

• 营养卫生 • 上一篇    下一篇

葡萄籽原花青素对Ⅱ型糖尿病大鼠视网膜病变的影响

李宇杰,张召锋,戴小倩,丁 叶,马小陶,姜燕飞,鲍 雷,李 勇*   

  1. 北京大学公共卫生学院营养与食品卫生学系,北京 100191
  • 收稿日期:2012-01-15 修回日期:2013-03-01 出版日期:2013-04-15 发布日期:2013-03-20
  • 通讯作者: 李勇 E-mail:liyong@bjmu.edu.cn
  • 基金资助:
    国家自然科学基金项目(81072293)

Effect of Grape Seed Proanthocyanidin Extract (GSPE) on Type Ⅱ Diabetic Retinopathy in Rats

LI Yu-jie,ZHANG Zhao-feng,DAI Xiao-qian,DING Ye,MA Xiao-tao,JIANG Yan-fei,BAO Lei,LI Yong*   

  1. Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
  • Received:2012-01-15 Revised:2013-03-01 Online:2013-04-15 Published:2013-03-20
  • Contact: LI Yong E-mail:liyong@bjmu.edu.cn

摘要: 目的:观察葡萄籽原花青素(GSPE)对Ⅱ型糖尿病大鼠视网膜病变的影响。方法:雄性SD大鼠高脂饲料喂养4周后,腹腔注射链脲佐菌素(STZ)造成糖尿病模型,成模后随机分为糖尿病模型组和原花青素低、中、高剂量组;以基础饲料喂养为正常对照组。原花青素低、中、高剂量组分别为125、250、500mg/(kg·d)(以体质量计),通过每天灌胃水溶液的方式进行干预,糖尿病模型组和正常对照组每天以蒸馏水灌胃。连续饲养16周后,测定其体质量、空腹血糖、血清糖基化终末产物(AGEs)、细胞间黏附分子(ICAM-1)、血管间黏附分子(VCAM-1),镜下观察视网膜的变化,免疫组化法测定视网膜中糖基化终产物受体(RAGE)的表达。结果:GSPE干预组血糖较糖尿病模型组有一定下降,但无显著性差异(P>0.05);GSPE高剂量组可以有效降低血清中AGEs水平(P<0.05);GSPE各干预组可以有效降低血清中ICAM-1水平(P<0.05);GSPE低剂量和高剂量组可以有效降低血清中VCAM-1水平(P<0.05);从组织学上,GSPE可以减轻视网膜损伤,保持视网膜各层完整;GSPE能降低RAGE在视网膜中的表达。结论:葡萄籽原花青素可以有效改善Ⅱ型糖尿病大鼠视网膜病变。

关键词: 葡萄籽原花青素, 糖尿病视网膜病变, 糖基化终末产物, 炎症因子

Abstract: Objective: To investigate the effect of grape seed proanthocyanidin extract (GSPE) on type Ⅱ diabetic retinopathy in rats. Methods: To establish type Ⅱ diabetic rat models, male SD rats fed high fat diet for 4 weeks were injected with streptozotocin (STZ, 0.01 mol/L, 30 mg/(kg?d)). The diabetic rats were randomly divided into diabetes-vehicle group (DM control group), three GSPE-treated groups. Normal rats were enrolled as normal control group. The low, medium and high-dose GSPE-treated groups were administrated at 125, 250 mg/(kg?d) and 500 mg/(kg?d), respectively. DM control group and normal control group were given equal volume of distilled water. After 16 weeks, body weight, fasting plasma glucose (FPG), advanced glycation endproducts (AGEs), ICAM-1 and VCAM-1 were measured. HE stain retina paraffin section was examined under a microscope. Receptor for RAGEs was detected by SP immunohistochemical method. Results: There was no difference (P > 0.05) between DM control group and GSPE-treated groups. Compared with DM control group, AGEs in GSPE high dose group were decreased (P < 0.05), ICAM-1 (all GSPE-treated groups) and VCAM-1 (GSPE low and high dose groups) were decreased (P < 0.05). The retina of GSPE-treated groups had fewer damaged areas and lower RAGE expression in histology. Conclusion: GSPE has a positive effect on type Ⅱ diabetic retinopathy in rats.

Key words: grape seed proanthocyanidin extract (GSPE), diabetic retinopathy (DR), advanced glycation endproducts (AGEs), inflammatory factor

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