中国神经再生研究(英文版) ›› 2017, Vol. 12 ›› Issue (9): 1544-1550.doi: 10.4103/1673-5374.215267

• 原著:颅神经损伤修复保护与再生 • 上一篇    下一篇

脂肪干细胞促进损伤喉返神经再生与功能恢复

  

  • 收稿日期:2017-08-18 出版日期:2017-09-15 发布日期:2017-09-15
  • 基金资助:

    中国国家自然科学基金项目(81470680, 81170901; 北京市自然科学基金项目(7132053; 北京市卫生系统高层次卫生技术人才培养计划(2014-2-004

Adipose-derived mesenchymal stem cells accelerate nerve regeneration and functional recovery in a rat model of recurrent laryngeal nerve injury

 Yun Li, Wen Xu, Li-yu Cheng   

  1. Department of Otorhinolaryngology-Head Neck Surgery, Beijing Tong Ren Hospital, Capital Medical University, Beijing, China; Key Laboratory of Otorhinolaryngology-Head Neck Surgery, Ministry of Education, Beijing, China
  • Received:2017-08-18 Online:2017-09-15 Published:2017-09-15
  • Contact: Wen Xu, M.D.,xuwendoc2@126.com.
  • Supported by:

    This study was supported by the National Natural Science Foundation of China, No. 81470680, 81170901; the Natural Science Foundation of Beijing of China, No. 7132053; the Beijing Health Foundation of High-level Technical Personnel in China, No. 2014-2-004.

摘要:

既往以甲状软骨成形或注射喉成形术修复损伤喉返神经,往往不能恢复声带的活动度。近年来研究显示,间充质干细胞移植在修复神经损伤方面效果良好。因此实验拟探索以脂肪干细胞移植修复损伤喉返神经的效果。实验设计以微型血管钳挤压建立喉返神经损伤模型大鼠,然后在损伤部位注射8 × 105脂肪干细胞、8 × 105脂肪干细胞分化的许旺细胞样细胞或未移植细胞。2,4,6周后,与未移植细胞的大鼠相比,移植脂肪干细胞和脂肪干细胞分化的许旺细胞样细胞的大鼠损伤喉返神经中有髓神经纤维密度较高,髓鞘较厚,声带活动度较好,神经传导能力恢复明显,甲杓肌萎缩减少;且移植脂肪干细胞的效果优于移植脂肪干细胞分化的许旺细胞样细胞。实验结果提示脂肪干细胞移植可能是促进损伤喉返神经再生的有效策略。

orcid:0000-0003-0198-0525(Wen Xu)

关键词: 神经再生, 间充质干细胞移植, 脂肪干细胞, 喉返神经, 喉, 神经损伤, 功能恢复, 声带, 细胞分化

Abstract:

Medialization thyroplasty or injection laryngoplasty for unilateral vocal fold paralysis cannot restore mobility of the vocal fold. Recent studies have shown that transplantation of mesenchymal stem cells is effective in the repair of nerve injuries. This study investigated whether adipose-derived stem cell transplantation could repair recurrent laryngeal nerve injury. Rat models of recurrent laryngeal nerve injury were established by crushing with micro forceps. Adipose-derived mesenchymal stem cells (ADSCs; 8 × 105) or differentiated Schwann-like adipose-derived mesenchymal stem cells (dADSCs; 8 × 105) or extracellular matrix were injected at the site of injury. At 2, 4 and 6 weeks post-surgery, a higher density of myelinated nerve fiber, thicker myelin sheath, improved vocal fold movement, better recovery of nerve conduction capacity and reduced thyroarytenoid muscle atrophy were found in ADSCs and dADSCs groups compared with the extracellular matrix group. The effects were more pronounced in the ADSCs group than in the dADSCs group. These experimental results indicated that ADSCs transplantation could be an early interventional strategy to promote regeneration after recurrent laryngeal nerve injury.
 

Key words: nerve regeneration, mesenchymal stem cell transplantation, adipose-derived mesenchymal stem cells, recurrent laryngeal nerve, larynx, nerve injury, functional recovery, vocal fold, cell differentiation, neural regeneration