Olfactory ensheathing cell transplantation alters the expression of chondroitin sulfate proteoglycans and promotes axonal regeneration after spinal cord injury

作     者：Guo-Yu Wang Zhi-Jian Cheng Pu-Wei Yuan Hao-Peng Li Xi-Jing He Guo-Yu Wang;Zhi-Jian Cheng;Pu-Wei Yuan;Hao-Peng Li;Xi-Jing He

作者机构：Second Department of Orthopedicsthe Second Hospital of Xi’an Jiaotong UniversityXi’anShaanxi ProvinceChina Xi’an International Medical Center Orthopedic HospitalXi’anShaanxi ProvinceChina 

出 版 物：《Neural Regeneration Research》 (中国神经再生研究（英文版）)

年 卷 期：2021年第16卷第8期

页      面：1638-1644页

核心收录：

学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 10[医学] 

基　　金：supported by Shaanxi Provincial Key Research and Development Plan in 2018,No. 2018SF-124 (to GYW) National Key Research and Development Project of the People’s Republic of China,No. 2018YFE0114200 (to XJH) 

主　　题：cells central nervous system in vivo injury model neurological function protection rat regeneration repair spinal cord 

摘      要：Cell transplantation is a potential treatment for spinal cord injury. Olfactory ensheathing cells(OECs) play an active role in the repair of spinal cord injury as a result of the dual characteristics of astrocytes and Schwann cells. However, the specific mechanisms of repair remain poorly understood. In the present study, a rat model of spinal cord injury was established by transection of T10. OECs were injected into the site, 1 mm from the spinal cord stump. To a certain extent, OEC transplantation restored locomotor function in the hindlimbs of rats with spinal cord injury, but had no effect on the formation or volume of glial scars. In addition, OEC transplantation reduced the immunopositivity of chondroitin sulfate proteoglycans(neural/glial antigen 2 and neurocan) and glial fibrillary acidic protein at the injury site, and increased the immunopositivity of growth-associated protein 43 and neurofilament. These findings suggest that OEC transplantation can regulate the expression of chondroitin sulfate proteoglycans in the spinal cord, inhibit scar formation caused by the excessive proliferation of glial cells, and increase the numbers of regenerated nerve fibers, thus promoting axonal regeneration after spinal cord injury. The study was approved by the Animal Ethics Committee of the Medical College of Xi an Jiaotong University, China(approval No. 2018-2048) on September 9, 2018.