中国神经再生研究(英文版) ›› 2025, Vol. 20 ›› Issue (7): 2084-2094.doi: 10.4103/NRR.NRR-D-23-01792

• 原著:周围神经损伤修复保护与再生 • 上一篇    下一篇

新型柔性神经导管具有优异机械性能且可促进神经再生

  

  • 出版日期:2025-07-15 发布日期:2024-11-27

A novel flexible nerve guidance conduit promotes nerve regeneration while providing excellent mechanical properties

Tong Li1, 2, 3, #, Quhan Cheng4, #, Jingai Zhang4 , Boxin Liu4 , Yu Shi4 , Haoxue Wang4 , Lijie Huang4 , Su Zhang4 , Ruixin Zhang4 , Song Wang5 , Guangxu Lu6 , Peifu Tang1, *, Zhongyang Liu1, *, Kai Wang4, *   

  1. 1 Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China;  2 Department of Training and Sports Medicine, Characteristic Medical Center of Chinese People’s Armed Police Force, Tianjin, China;  3 Medical School of Chinese PLA, Beijing, China;  4 Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China;  5 Department of Orthopedics, Tianjin Hospital, Tianjin, China;  6 Department of Rehabilitation Medicine, Er Quan Hospital of PAP, Wuxi, Jiangsu Province, China
  • Online:2025-07-15 Published:2024-11-27
  • Contact: Peifu Tang, PhD, pftang301@163.com; Zhongyang Liu, PhD, lzy_westlife@163.com; Kai Wang, PhD, 013053@nankai.edu.cn.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China, No. 82202718; the Natural Science Foundation of Beijing, No. L212050; the China Postdoctoral Science Foundation, Nos. 2019M664007, 2021T140793 (all to ZL).

摘要:

在临床实践中,无张力神经吻合通常只能满足较短神经缺损(< 5 mm)的修复。在长短神经缺损的情况下,自体移植仍然是金标准,但其可引发多种并发症。因此能桥接周围神经损伤的神经导管被认为是一种克服自体移植局限性的替代品。一种理想的神经导管应具有优异的机械性能,包括灵活性、抗扭结和管腔塌陷能力,同时也能为神经再生提供物理引导。实验使用静电纺丝技术在神经导管最内腔面制备了取向纤维,随后在取向纤维外制备无序的静电纺丝纤维,最后在静电纺丝管的外壁使用熔融纺丝技术制备螺旋状的熔融纺丝纤维。这种柔性神经导管内腔面的取向纤维可促进神经细胞沿着纤维伸展,而外部的螺旋熔融纤维可增强抗扭结和抗挤压特性,并具有良好的结构稳定性。最后,将这种新型柔性神经导管植入大鼠坐骨神经缺损模型,可见其可有效促进了神经再生和神经功能恢复。结果表明,这种新型柔性神经导管是一种有临床应用前景的用于周围神经缺损修复的神经导管。

https://orcid.org/0000-0003-4279-1704 (Peifu Tang); https://orcid.org/0000-0003-4943-1955 (Zhongyang Liu); https://orcid.org/0000-0003-3317-3509 (Kai Wang)

关键词: 神经管,  神经再生,  抗扭结,  拓扑线索,  周围神经损伤,  取向纤维,  螺旋形纤维

Abstract: Autografting is the gold standard for surgical repair of nerve defects > 5 mm in length; however, autografting is associated with potential complications at the nerve donor site. As an alternative, nerve guidance conduits may be used. The ideal conduit should be flexible, resistant to kinks and lumen collapse, and provide physical cues to guide nerve regeneration. We designed a novel flexible conduit using electrospinning technology to create fibers on the innermost surface of the nerve guidance conduit and employed melt spinning to align them. Subsequently, we prepared disordered electrospun fibers outside the aligned fibers and helical melt-spun fibers on the outer wall of the electrospun fiber lumen. The presence of aligned fibers on the inner surface can promote the extension of nerve cells along the fibers. The helical melt-spun fibers on the outer surface can enhance resistance to kinking and compression and provide stability. Our novel conduit promoted nerve regeneration and functional recovery in a rat sciatic nerve defect model, suggesting that it has potential for clinical use in human nerve injuries

Key words: aligned fibers,  anti-kinking,  helical fibers,  nerve guidance conduit,  nerve regeneration,  peripheral nerve injury,  topological guidance