Human amnion tissue injected with human umbilical cord mesenchymal stem cells repairs damaged sciatic nerves in rats  

作　　者：Dehua Li Changhui Wang Wei Shan Ruixia Zeng Yan Fang Pan Wang 

机构地区：[1]Department of Anatomy,Liaoning Medical University,Jinzhou 121001,Liaoning Province,China [2]Department of Neurology,Fushun Second Hospital,Fushun 113001,Liaoning Province,China

出　　处：《Neural Regeneration Research》2012年第23期1771-1778,共8页中国神经再生研究（英文版）

基　　金：financially sponsored by the Natural Science Foundation of Liaoning Province,No.20102138

摘　　要：Human umbilical cord mesenchymal stem cells,incorporated into an amnion carrier tubes,were assessed for nerve regeneration potential in a rat nerve defect model.Damaged nerves were exposed to human amnion carriers containing either human umbilical cord mesenchymal stem cell （cell transplantation group）or saline（control group）.At 8,12,16 and 20 weeks after cell implantation,the sciatic functional index was higher in the cell transplantation group compared with the control group.Furthermore,electrophysiological examination showed that threshold stimulus and maximum stimulus intensity gradually decreased while compound action potential amplitude gradually increased.Hematoxylin-eosin staining showed that regenerating nerve fibers were arranged in nerve tracts in the cell transplantation group and connective tissue between nerve tracts and amnion tissue reduced over time.Gastrocnemius muscle cell diameter,wet weight and restoration ratio were increased.These data indicate that transplanted human umbilical cord mesenchymal stem cells,using the amnion tube connection method,promote restoration of damaged sciatic nerves in rats.Human umbilical cord mesenchymal stem cells,incorporated into an amnion carrier tubes,were assessed for nerve regeneration potential in a rat nerve defect model.Damaged nerves were exposed to human amnion carriers containing either human umbilical cord mesenchymal stem cell （cell transplantation group）or saline（control group）.At 8,12,16 and 20 weeks after cell implantation,the sciatic functional index was higher in the cell transplantation group compared with the control group.Furthermore,electrophysiological examination showed that threshold stimulus and maximum stimulus intensity gradually decreased while compound action potential amplitude gradually increased.Hematoxylin-eosin staining showed that regenerating nerve fibers were arranged in nerve tracts in the cell transplantation group and connective tissue between nerve tracts and amnion tissue reduced over time.Gastrocnemius muscle cell diameter,wet weight and restoration ratio were increased.These data indicate that transplanted human umbilical cord mesenchymal stem cells,using the amnion tube connection method,promote restoration of damaged sciatic nerves in rats.

关 键 词：umbilical cord mesenchymal stem cells cell transplantation AMNION sciatic nerve injury RESTORATION stem cells neural regeneration 

分 类 号：Q421[生物学—神经生物学] TQ658.2[生物学—生理学]