https://scholars.lib.ntu.edu.tw/handle/123456789/631440
Title: | Aligned core–shell fibrous nerve wrap containing Bletilla striata polysaccharide improves functional outcomes of peripheral nerve repair | Authors: | Chen, Shih Heng Lien, Po Hao Lin, Feng-Huei Chou, Pang Yun CHIH-HAO CHEN Chen, Zhi Yu Chen, Shih Hsien SUNG-TSANG HSIEH Huang, Chieh Cheng Kao, Huang Kai |
Keywords: | Bletilla striata polysaccharide | Core–shell | Electrospinning | Nerve wrap | Peripheral nerve regeneration | Schwann cell | Issue Date: | 30-Jun-2023 | Journal Volume: | 241 | Source: | International Journal of Biological Macromolecules | Abstract: | Peripheral nerve injuries are commonly encountered in extremity traumas. Their motor and sensory recovery following microsurgical repair is limited by slow regeneration speed (<1 mm/d) and subsequent muscle atrophy, which are consequently correlated with the activity of local Schwann cells and efficacy of axon outgrowth. To promote post-surgical nerve regeneration, we synthesized a nerve wrap consisting of an aligned polycaprolactone (PCL) fiber shell with a Bletilla striata polysaccharide (BSP) core (APB). Cell experiments demonstrated that the APB nerve wrap markedly promoted neurite outgrowth and Schwann cell migration and proliferation. Animal experiments applying a rat sciatic nerve repair model indicated that the APB nerve wrap restored conduction efficacy of the repaired nerve and the compound action potential as well as contraction force of the related leg muscles. Histology of the downstream nerves disclosed significantly higher fascicle diameter and myelin thickness with the APB nerve wrap compared to those without BSP. Thus, the BSP-loaded nerve wrap is potentially beneficial for the functional recovery after peripheral nerve repair and offers sustained targeted release of a natural polysaccharide with good bioactivity. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/631440 | ISSN: | 01418130 | DOI: | 10.1016/j.ijbiomac.2023.124636 |
Appears in Collections: | 醫學工程學研究所 |
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