Ventral root re-implantation is better than peripheral nerve transplantation for motoneuron survival and regeneration after spinal root avulsion injury

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• 作者：Huanxing Su (1)
  Qiuju Yuan (2)
  Dajiang Qin (2)
  Xiaoying Yang (2)
  Wai-Man Wong (2)
  Kwok-Fai So (2) (4)
  Wutian Wu (2) (3) (4)
  
• 关键词：Avulsion ; Peripheral nerve graft transplantation ; Ventral root re ; implantation ; Motoneuron survival and regeneration
• 刊名：BMC Surgery
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：13
• 期：1
• 全文大小：360KB
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  35. The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2482/13/21/prepub
  
• 作者单位：Huanxing Su (1)
  Qiuju Yuan (2)
  Dajiang Qin (2)
  Xiaoying Yang (2)
  Wai-Man Wong (2)
  Kwok-Fai So (2) (4)
  Wutian Wu (2) (3) (4)
  
  1. State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
  2. Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China
  4. GHM Institute of CNS Regeneration, Jinan University, Guangzhou, China
  3. Research Center of Reproduction, Development and Growth, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
  

文摘

Background Peripheral nerve (PN) transplantation and ventral root implantation are the two common types of recovery operations to restore the connection between motoneurons and their target muscles after brachial plexus injury. Despite experience accumulated over the past decade, fundamental knowledge is still lacking concerning the efficacy of the two microsurgical interventions. Methods Thirty-eight adult female Sprague–Dawley rats were divided into 5 groups. Immediately following root avulsion, animals in the first group (n--) and the second group (n--) received PN graft and ventral root implantation respectively. The third group (n--) and the fourth group (n--) received PN graft and ventral root implantation respectively at one week after root avulsion. The fifth group received root avulsion only as control (n--). The survival and axonal regeneration of severed motoneurons were investigated at 6?weeks post-implantation. Results Re-implantation of ventral roots, both immediately after root avulsion and in delay, significantly increased the survival and regeneration of motoneurons in the avulsed segment of the spinal cord as compared with PN graft transplantation. Conclusions The ventral root re-implantation is a better surgical repairing procedure than PN graft transplantation for brachial plexus injury because of its easier manipulation for re-implanting avulsed ventral roots to the preferred site, less possibility of causing additional damage and better effects on motoneuron survival and axonal regeneration.