中国神经再生研究(英文版) ›› 2015, Vol. 10 ›› Issue (1): 53-59.doi: 10.4103/1673-5374.150706

• 原著:周围神经损伤修复保护与再生 • 上一篇    下一篇

恒河猴旋前圆肌肌支套接缝合修复损伤尺神经模式下神经轴突再生可倍数扩增

  

  • 收稿日期:2014-10-14 出版日期:2015-01-15 发布日期:2015-01-15

Sleeve bridging of the rhesus monkey ulnar nerve with muscular branches of the pronator teres: multiple amplification of axonal regeneration

Yu-hui Kou #, Pei-xun Zhang #, Yan-hua Wang, Bo Chen, Na Han *, Feng Xue *, Hong-bo Zhang, Xiao-feng Yin *, Bao-guo Jiang   

  1. Department of Trauma and Orthopedics, Peking University People’s Hospital, Beijing, China
  • Received:2014-10-14 Online:2015-01-15 Published:2015-01-15
  • Contact: Na Han, M.D., hannaga@hotmail.com. Feng Xue, M.D., brothexue@126.com. Xiao-feng Yin, M.D., xiaofengyin@bjmu.edu.cn.
  • Supported by:

    This study was supported by grants from the National Program on Key Basic Research Project of China (973 Program), No. 2014CB542200; the National Natural Science Foundation of China, No. 31271284, 81171146, 31100860; Program for Innovative Research Team in University of Ministry of Education of China, No. IRT1201; and the Natural Science Foundation of Beijing of China, No. 7142164.

摘要:

周围神经再生过程中存在多芽再生即再生倍数扩增现象,近端神经纤维再生过程中可以发出多个轴芽向远端神经残端生长,这是周围神经再生的一个特性。我们在前期研究中通过啮齿类动物证实了采用较小的供体神经小间隙套接修复较大受体神经模式下,周围神经再生倍数扩增的极限及有效性。本次实验拟进一步观察灵长类动物周围神经有髓神经纤维再生倍数的扩增效果。制作右侧前臂旋前圆肌肌支神经修复尺神经远端缺损恒河猴模型,小间隙套接缝合法将旋前圆肌肌支近端与尺神经远端套接缝合6个月后,恒河猴患肢尺侧可恢复2指屈曲运动和轻度的屈腕运动;神经电生理测量到恒河猴修复侧神经运动神经传导速度可达22.63±6.34 m/s,锇酸染色发现供体旋前圆肌肌支有髓神经纤维为1657±652根,修复尺神经有髓神经纤维为2661±843根,再生有髓神经倍数扩增率为1.61。提示在灵长类动物采用旋前圆肌肌支神经修复尺神经损伤时,再生神经纤维可以有效再生,并在一定程度恢复受损尺神经功能,且在这种修复模式下,修复后的尺神经轴突存在神经倍数的扩增现象。

关键词: 神经再生, 周围神经, 恒河猴, 旋前圆肌肌支神经, 尺神经, 倍数扩增, 小间隙, 套接缝合

Abstract:

Multiple-bud regeneration, i.e., multiple amplification, has been shown to exist in peripheral nerve regeneration. Multiple buds grow towards the distal nerve stump during proximal nerve fiber regeneration. Our previous studies have verified the limit and validity of multiple amplification of peripheral nerve regeneration using small gap sleeve bridging of small donor nerves to repair large receptor nerves in rodents. The present study sought to observe multiple amplification of myelinated nerve fiber regeneration in the primate peripheral nerve. Rhesus monkey models of distal ulnar nerve defects were established and repaired using muscular branches of the right forearm pronator teres. Proximal muscular branches of the pronator teres were sutured into the distal ulnar nerve using the small gap sleeve bridging method. At 6 months after suture, two-finger flexion and mild wrist flexion were restored in the ulnar-sided injured limbs of rhesus monkey. Neurophysiological examination showed that motor nerve conduction velocity reached 22.63 ± 6.34 m/s on the affected side of rhesus monkey. Osmium tetroxide staining demonstrated that the number of myelinated nerve fibers was 1,657 ± 652 in the branches of pronator teres of donor, and 2,661 ± 843 in the repaired ulnar nerve. The rate of multiple amplification of regenerating myelinated nerve fibers was 1.61. These data showed that when muscular branches of the pronator teres were used to repair ulnar nerve in primates, effective regeneration was observed in regenerating nerve fibers, and functions of the injured ulnar nerve were restored to a certain extent. Moreover, multiple amplification was subsequently detected in ulnar nerve axons.

Key words: nerve regeneration, peripheral nerve, rhesus monkey, muscular branches of pronator teres, ulnar nerve, multiple amplification, small gap, sleeve bridging, NSFC grants, neural regeneration