中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (18): 2690-2696.doi: 10.3969/j.issn.2095-4344.2016.18.016

• 细胞损伤与修复动物模型 Animal models of cell injury and repair • 上一篇    下一篇

玻璃体腔注射促红细胞生成素保护糖尿病视网膜病变模型大鼠的视神经作用

张永红1,张晓湄1,韦笑一1,唐柳苹1,刘代华2,凌 宇1   

  1. 广西壮族自治区柳州市人民医院,1眼科,2药剂科,广西壮族自治区柳州市  545006
  • 收稿日期:2016-03-15 出版日期:2016-04-29 发布日期:2016-04-29
  • 通讯作者: 张永红,广西壮族自治区柳州市人民医院眼科,广西壮族自治区柳州市 545006
  • 作者简介:张永红,女,1977年生,湖南省衡阳市人,汉族, 2008年中南大学湘雅医学院毕业,博士,副主任医师。
  • 基金资助:

    广西自然科学基金项目(2010GXNSFB013090)

Vitreous cavity injection with erythropoietin protects optic nerve in a rat model of diabetic retinopathy

Zhang Yong-hong1, Zhang Xiao-mei1, Wei Xiao-yi1, Tang Liu-ping1, Liu Dai-hua2, Ling Yu1   

  1. 1Department of Ophthalmology, 2Department of Pharmacy, Liuzhou People’s Hospital of Guangxi Zhuang Autonomous Region, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China
  • Received:2016-03-15 Online:2016-04-29 Published:2016-04-29
  • Contact: Zhang Yong-hong, Department of Ophthalmology, Liuzhou People’s Hospital of Guangxi Zhuang Autonomous Region, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China
  • About author:Zhang Yong-hong, M.D., Associate chief physician, Department of Ophthalmology, Liuzhou People’s Hospital of Guangxi Zhuang Autonomous Region, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the Natural Science Foundation of Guangxi Zhuang Autonomous Region, No. 2010GXNSFB013090

摘要:

文章快速阅读:

文章快速阅读:
 促红细胞生成素:是一种参与中枢神经包括视网膜损伤反应的重要介质,参与机体多种功能的调节。且具有良好的水溶性,可以直接经玻璃体注射给药,在多种视网膜损伤的动物模型中发挥保护作用,如促进视网膜节细胞的生长,保护视神经横断眼的节细胞、保护视网膜免受缺血再灌注损伤等。

糖尿病视网膜病变:是糖尿病眼病不可逆最严重可致盲的并发症,由于糖代谢紊乱,容易并发视网膜微血管系统损伤,最终导致视网膜一系列病理改变,包括血管舒缩调节功能失常、血管周细胞凋亡和血管基底膜增厚等。
 
背景:糖尿病会导致多种并发症的出现,其中视网膜病变是一种常见的类型,为探究促红细胞生成素在糖尿病视网膜病变中的作用,建立具有临床视网膜新生血管相似病理特征且重复性高的动物模型是十分必要的。
目的:观察玻璃体腔注射促红细胞生成素对糖尿病视网膜病变大鼠视神经的保护作用。
方法:建立糖尿病视网膜病变模型大鼠,于玻璃体腔注射促红细胞生成素干预,连续注射14 d,设模型组和正常对照组作对比。
结果与结论:①透射电镜观察:与模型组相比,促红细胞生成素组视网膜神经节细胞核呈现出均匀的染色,细胞膜完整,内质网呈轻微肿胀,细胞核周围线粒体存在数量较少的空泡;②Western blot和RT-PCR检测:与模型组相比,促红细胞生成素组Caspase-3激活型、Bax蛋白表达降低(P < 0.05),Caspase-3原型蛋白和Bcl-2蛋白表达明显提高(P < 0.05),两组核转录因子κB和Survivn基因的表达也差异有显著性意义(P < 0.05);③结果证实:玻璃体腔注射促红细胞生成素对糖尿病视网膜病变大鼠视神经有保护作用,可能与其抑制细胞凋亡有关。

中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程
ORCID: 0000-0003-1237-7449(张永红)

关键词: 实验动物, 细胞损伤与修复模型, 糖尿病, 并发症, 玻璃体, 玻璃体腔, 腔内注射, 视网膜病变, 促红细胞生成素, 大鼠, 细胞凋亡, 凋亡因子, 广西壮族自治区自然科学基金

Abstract:

BACKGROUND: Diabetes can lead to many complications. Of them, retinopathy is a common type. To explore the effect of erythropoietin in diabetic retinopathy, it is necessary to establish an animal model of similar pathologic features and high reproducibility in clinical retinal neovascularization.

OBJECTIVE: To investigate the protective effect of vitreous cavity injection of erythropoietin on optic nerve of rats with diabetic retinopathy. 
METHODS: Rat models of diabetic retinopathy were established and injected with erythropoietin through vitreous space for 14 consecutive days. Results were compared between the model and normal control groups. 

RESULTS AND CONCLUSION: (1) Transmission electron microscope: compared with the model group, retinal ganglion cell nucleus presented uniform red; cell membrane was intact; endoplasmic reticulum exhibited slight swelling. A small number of vacuoles were found in mitochondria around the nuclei. (2) Western blot assay and RT-PCR: compared with the model group, Caspase-3 and Bax protein expression was lower in the erythropoietin group (P < 0.05). Caspase-3 protein and Bcl-2 protein expression was significantly higher in the erythropoietin group than in the model group (P < 0.05). Significant differences in nuclear factor κB and Survivn gene expression were detected between the model and erythropoietin groups (P < 0.05). (3) Results verified that vitreous cavity injection of erythropoietin had neuroprotective effect on rats with diabetic retinopathy, which may be associated with the inhibitory effect on apoptosis. 
中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程

Key words: Tissue Engineering, Models, Animal, Diabetes Mellitus