中国神经再生研究(英文版) ›› 2014, Vol. 9 ›› Issue (8): 815-820.doi: 10.4103/1673-5374.131597

• 原著:视神经损伤修复保护与再生 • 上一篇    下一篇

Nogo受体表达上调可致糖尿病视网膜神经节细胞凋亡

  

  • 收稿日期:2014-03-28 出版日期:2014-04-25 发布日期:2014-04-25
  • 基金资助:

    国家自然科学基金(31140072,81300931);辽宁省科技厅项目(2011225015);辽宁省自然科学基金(2013022055)

Upregulation of Nogo receptor expression induces apoptosis of retinal ganglion cells in diabetic rats

Xuezheng Liu 1, Zhongfu Zuo 1, Wanpeng Liu 1, Zhiyun Wang 1, Yang Hou 2, Yunjie Fu 1, Yuzhi Han 1   

  1. 1 Department of Anatomy, Liaoning Medical University, Jinzhou, Liaoning Province, China
    2 Scientific Experimental Center, Liaoning Medical University, Jinzhou, Liaoning Province, China
  • Received:2014-03-28 Online:2014-04-25 Published:2014-04-25
  • Contact: Xuezheng Liu, M.D., Department of Anatomy, Liaoning Medical University, Jinzhou 121001, Liaoning Province, China, Liuxuezheng168@vip.sina.com.
  • Supported by:

    This study was supported by the National Natural Science Foundation of China, No. 31140072, 81300931; the Liaoning Provincial Department of Science and Technology Project, No. 2011225015; the Natural Science Foundation of Liaoning Province in China, No. 2013022055.

摘要:

Nogo受体是诱导神经元凋亡的重要因素,但糖尿病时视网膜Nogo受体的表达变化及其对视网膜神经节细胞凋亡的影响目前尚不清楚。我们发现Nogo受体在视网膜主要表达于链脲佐菌素诱导的糖尿病大鼠模型视网膜神经节细胞内。糖尿病发病12周后视网膜NgR及Rho激酶表达明显增加,视网膜神经节细胞凋亡明显,利用RNA干扰手段抑制糖尿病大鼠视网膜NgR的表达,可显著抑制Rho激酶表达,糖尿病大鼠视网膜神经节细胞凋亡也明显减少。说明Nogo受体表达上调是糖尿病大鼠视网膜神经节细胞凋亡的重要机制之一。

关键词: 神经再生, 糖尿病, 糖尿病视网膜病变, 视力, 视网膜神经节细胞, 神经再生, 凋亡, Nogo受体, Rho激酶, 髓磷脂相关蛋白, NSFC

Abstract:

The Nogo receptor is an essential factor for neuronal apoptosis, but the changes in Nogo receptor expression in the retina and the effects of the Nogo receptor on retinal ganglion cell apoptosis in diabetes mellitus remain unclear. We found that Nogo receptor expression was mainly visible in retinal ganglion cells of a rat model of diabetes mellitus induced by streptozotocin. At 12 weeks after onset of diabetes mellitus, Nogo receptor and Rho kinase expression significantly increased in the retina, and retinal ganglion cell apoptosis was apparent. When RNA interference was used to suppress Nogo receptor expression in rat retina, Rho kinase expression was obviously inhibited, and retinal ganglion cell apoptosis was evidently reduced in rats with diabetes mellitus. These results indicate that upregulation of Nogo receptor expression is an important mechanism of retinal ganglion cell apoptosis in rats with diabetes mellitus.

Key words: nerve regeneration, diabetes mellitus, diabetic retinopathy, visual acuity, retinal ganglion cells, apoptosis, Nogo receptor, Rho kinase, myelin-associated protein, NSFC grant, neural regeneration