中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (18): 2648-2654.doi: 10.3969/j.issn.2095-4344.2016.18.010

• 周围神经损伤动物模型 Animal models of peripheral nerve injury • 上一篇    下一篇

振荡电场对大鼠损伤脊髓组织中Wnt-3a表达及运动能力的影响

黄先甲1,钱 军1,张坤坤1,潘卫东2,荆珏华1   

  1. 1安徽医科大学第二附属医院骨科,安徽省合肥市 230601;2中国科学院电工研究所,北京市 100190
  • 收稿日期:2016-03-03 出版日期:2016-04-29 发布日期:2016-04-29
  • 通讯作者: 荆珏华,博士,主任医师,硕士生导师,安徽医科大学第二附属医院骨科,安徽省合肥市 230000
  • 作者简介:黄先甲,1991年生,安徽省六安市人,汉族,安徽医科大学在读硕士,主要从事脊髓损伤方面的研究。
  • 基金资助:

    国家自然科学基金项目(81471273);安徽省自然科学基金项目(1408085MH184)

Effects of oscillating electric field on Wnt-3a expression and motor function in the injured rat spinal cord

Huang Xian-jia1, Qian Jun1, Zhang Kun-kun1, Pan Wei-dong2, Jing Jue-hua1   

  1. 1Department of Orthopedics, Second Affiliated Hospital, Anhui Medical University, Hefei 230601, Anhui Province, China; 2Institute of Electrical Engineering, Chinese Academy of Science, Beijing 100190, China
  • Received:2016-03-03 Online:2016-04-29 Published:2016-04-29
  • Contact: Jing Jue-hua, M.D., Chief physician, Master’s supervisor, Department of Orthopedics, Second Affiliated Hospital, Anhui Medical University, Hefei 230601, Anhui Province, China
  • About author:Huang Xian-jia, Studying for master’s degree, Department of Orthopedics, Second Affiliated Hospital, Anhui Medical University, Hefei 230601, Anhui Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81471273; the Natural Science Foundation of Anhui Province, No. 1408085MH184

摘要:

文章快速阅读:

 

文题释义:
振荡电场:是指电场刺激植入器每隔15 min自动变换电场的极性,在阳极排斥神经轴突生长之前促进另一侧神经轴突向阴极生长,从而实现轴突的双向生长。
Wnt-3a:是Wnt家族相关蛋白之一,通过与相应的胞膜受体Frizzled蛋白结合启动经典途径从而调控细胞基因的转录,能在促进神经干细胞体外增殖的同时可进一步提高其向神经元分化的比例,抑制胶质细胞的生成。
 
背景:Wnt信号通路能够刺激神经干细胞增殖和分化,促进脊髓损伤的修复,而电场刺激就可以改变Wnt信号通路蛋白的表达。
目的:探讨振荡电场刺激对脊髓损伤大鼠局部Wnt-3a蛋白表达以及运动功能恢复的影响。
方法:Allen’s打击法建立36只SD大鼠脊髓损伤模型,随机等分为振荡电场刺激组和脊髓损伤组,两组均置入刺激电极,仅振荡电场刺激组施加振荡电场干预。
结果与结论:振荡电场刺激组和脊髓损伤组大鼠在造模后3 d时的BBB评分和脊髓中Wnt-3a的表达水平接近,而在造模后7 d和14 d时BBB评分和脊髓中Wnt-3a的表达水平差异有显著性意义,提示振荡电场刺激可以促进脊髓损伤大鼠的运动功能恢复;损伤脊髓组织中Wnt-3a的表达发生变化,提示振荡电场刺激促进Wnt信号蛋白在脊髓损伤的早期被激活,其可能与振荡电场刺激促进脊髓损伤的修复有关。
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: 0000-0001-7669-879X(荆珏华)

关键词: 实验动物, 神经损伤与修复动物模型, 振荡电场, 脊髓损伤模型, Wnt信号通路, Wnt-3a蛋白, 动物模型, 功能恢复, BBB评分, 国家自然科学基金

Abstract:

BACKGROUND: Wnt signaling pathways can stimulate the proliferation and differentiation of neural stem cells, and promote the repair of spinal cord injury. The electrical field stimulation can change the protein expression of Wnt signaling pathways.

QBJECTIVE: To explore the influence of oscillating electric field on motor function recovery and the expression of Wnt-3a protein in rats with spinal cord injury.
METHODS: A total of 36 Sprague-Dawley rats models with spinal cord injury were induced by the Allen’s method. All rats were randomly divided into oscillating electric field stimulation group and spinal cord injury group. The stimulating electrodes were added in both groups. The oscillating electric field stimulation group received oscillating electric field intervention.
RESULTS AND CONCLUSION: At 3 days after model establishment, Basso, Beattie, and Bresnahan (BBB) locomotor rating scale scores and Wnt-3a expression were similar between the oscillating electric field stimulation group and spinal cord injury group. At 7 and 14 days, significant differences in BBB scores and Wnt-3a expression were detected. These results indicate that oscillating electric field stimulation can activate Wnt signaling protein in the early stage of spinal cord injury, which may be associated with the promoting effect of oscillating electric field stimulation on spinal cord injury. 
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: Spinal Cord Injuries, Electrodes, Wnt Proteins, Tissue Engineering