Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (1): 69-74.doi: 10.3969/j.issn.2095-4344.2014.01.012

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Human umbilical cord mesenchymal stem cells transplantation delays denervated muscle atrophy in rats

Chen Chuan-huang1, Yang Tao1, Wu Fang2, Li Wen-qing1, Li Chu-yan1, Mao Ren-qun1, Yu Zhi-cai1,Zhang Guo-lei1, Xiao Zhen-xing1, Yang Wan-zhang2   

  1. 1Department of Hand and Foot Surgery, 2Department of Rehabilitation, Nanshan Hospital, Guangdong Medical College, Shenzhen 518052, Guangdong Province, China
  • Revised:2013-11-12 Online:2014-01-01 Published:2014-01-01
  • Contact: Yang Wan-zhang, M.D., Chief physician, Professor, Department of Rehabilitation, Nanshan Hospital, Guangdong Medical College, Shenzhen 518052, Guangdong Province, China
  • About author:Chen Chuan-huan, Associate chief physician, Department of Hand and Foot Surgery, Nanshan Hospital, Guangdong Medical College, Shenzhen 518052, Guangdong Province, China
  • Supported by:

    the Science and Technology Plan Program of Shenzhen, No. 201203221; Hospital-Level Foundation from Nanshan Hospital of Guangdong Medical College

Abstract:

BACKGROUND: Slow growth of peripheral nerve, muscle denervation atrophy and fossilization of motor end plate following sciatic nerve injury cause irreversible limb function disorders. Umbilical cord mesenchymal stem cells have been widely used in multi-disciplinary research, but studies concerning umbilical cord mesenchymal stem cells delaying denervated muscle atrophy in rats following peripheral nerve injury are rarely reported.
OBJECTIVE: To observe the value of human umbilical cord mesenchymal stem cells transplantation to delay denervated muscle atrophy of rats after sciatic nerve injury.
METHODS: Umbilical cord blood was collected from healthy parturient woman after full-term delivery. In the experimental group, the rat’s Sunderland IV degree sciatic nerve injury model was established by 5 mm denervation, epineurial repair, and 5 mm small gap transplantation of umbilical cord mesenchymal stem cells. In the control group, after modeling, the same volume of normal saline was injected into the small gap. The main outcome measures included the sciatic nerve function index, the wet weight of triceps surae,sciatic nerve latency,  action potential conduction velocity and amplitude,and skeletal muscle fiber cross section area maintenance rate.
RESULTS AND CONCLUSION: After 4, 8 and 12 weeks of modeling, the sciatic nerve function index values, the wet weight of triceps surae and skeletal muscle fiber cross section area maintenance rates in the experimental group were significantly higher than those in the control group (P < 0.05). After 12 weeks of modeling, electromyography results showed sciatic nerve latency was significantly lower, but action potential conduction velocity and amplitude were dramatically higher in the experimental group than the control group (P < 0.05, P < 0.001). Human umbilical cord mesenchymal stem cells transplantation in denervated muscle atrophy rats after sciatic nerve promotes nerve growth, delays denervated muscle atrophy, maintains the denervatied neuromusle’s morphology and function.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


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Key words: stem cells, umbilical cord, mesenchymal stem cells, peripheral nerves, muscular disorders, atrophic

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