中国神经再生研究(英文版) ›› 2022, Vol. 17 ›› Issue (3): 553-554.doi: 10.4103/1673-5374.320977

• 观点:脊髓损伤修复保护与再生 • 上一篇    下一篇

脊髓损伤后的运动恢复:轴突再生和重新连接之间的紧密依赖

  

  • 出版日期:2022-03-15 发布日期:2021-10-15

Locomotor recovery after spinal cord injury: intimate dependence between axonal regeneration and re-connection

Hector Ramiro Quintá*   

  1. Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET; Laboratorio de Medicina Experimental “Dr. Jorge E. Toblli”, Hospital Alemán, Buenos Aires, Argentina
  • Online:2022-03-15 Published:2021-10-15
  • About author:Héctor Ramiro Quintá, PhD, quintaramiro@gmail.com.

摘要: Neural Regen Res:脊髓损伤后轴突再生的重要分子途径可能涉及Netrin-1/Netrin-1受体
创伤性脊髓损伤的特征是脊髓完整性受损,影响大脑与脊髓中神经元之间的连接。创伤事件导致对伤害以下的运动自主控制损害。因此,研究者们认为运动恢复是寻找新疗法的主要目标之一。
来自阿根廷阿莱曼医院的Hector Ramiro Quintá团队认为,轴突再生的分子途径可能涉及Netrin-1/Netrin-1受体相互作用的细胞外钙流入,因为该分子介质参与生长锥中的肌动蛋白和微管蛋白细胞骨架组装。因此,未来将致力于确定该介质与电压门控钙和/或瞬时受体电位通道相互作用的机制。修复机制涉及损伤后轴突重新生长的生物学方法也可用于其他发生轴突创伤的神经病理学,例如创伤性脑损伤或周围神经损伤,可能是探索潜在新疗法的较好模型。
文章在《中国神经再生研究(英文版)》杂志2022年 3月 3期发表。

https://orcid.org/0000-0002-2098-7346 (Hector Ramiro Quintá)

Abstract: Traumatic spinal cord injuries (SCI) are characterized by damage in the integrity of the spinal cord, which results in either temporary or permanent alterations in the locomotor, sensory and/or autonomic functions (Yezierski, 2009). The traumatic event leads to impairments in voluntary control of movement below the injury by affecting the connection between the brain and the neurons localized in the spinal cord. Therefore, the recovery of locomotor activity is considered one of the main goals in the search of new therapies by the scientists around the world. For many years, axon regeneration has been considered the Holy Grail in SCI research, however, now we know that the regeneration of sectioned axons is necessary but not enough to promote locomotor recovery (Raineteau and Schwab, 2001). The disruption of long motor and sensory axonal tracts as a consequence of the lesion prevents their specific interactions with their cellular targets. For this reason the goal of ongoing investigations is to promote the re-growth of axonal tracts across the lesion site and their re-connection with propiospinal neurons at different segments of the spinal cord (Figure 1A). In particular, regeneration and re-connection of corticospinal tract (CST) axons is of vital significance to regain voluntary locomotor activity after a complete spinal cord injury (Oudega and Perez, 2012). This is because the axons that integrate the CST transmit voluntary motor information to the forelimbs and hindlimbs, and the damage of this structure in humans affects directly the locomotion (Nathan, 1994).