Neuroprotection of ligustrazine hydrochloride combined with bone marrow mesenchymal stem cell transplantation in rats with spinal cord injury

doi:10.3969/j.issn.2095-4344.2016.01.017

Abstract

Abstract:

BACKGROUND: Ligustrazine hydrochloride which promotes nerve repair can be applied to the treatment of nervous system injury.
OBJECTIVE: To investigate the effect of ligustrazine hydrochloride combined with bone marrow mesenchymal stem cells transplantation on electrophysiological property and hindlimb function of rats with spinal cord injury.
METHODS: T9 spinal cord transection injury models were made in rats using Allen’s method, and then rat models were randomized into three groups: rats in control group received tail vein injection of culture solution; rats in cell transplantation group underwent bone marrow mesenchymal stem cell transplantation via the tail vein; rats in combined group were subjected to the tail vein injection of ligustrazine hydrochloride and bone marrow mesenchymal stem cells that lasted for 4 hours. At 1, 2, 4, 6, 8 weeks after modeling, Basso, Beattie and Bresnahan scores and modified Tarlov scores were used to detect the motor function of rats. At 72 hours after modeling, RT-PCR method was used to detect the expression of Bcl-2 and basic fibroblast growth factor around the injured region. At 4 weeks after modeling, somatosensory and motor evoked potentials were measured for evaluation of neurophysiological recovery. At 8 weeks after modeling, horseradish peroxidase tracer was used to assess the regeneration of rat spinal cord nerve fibers; PKH-26 labeling was used to observe the survival and migration of transplanted cells.
RESULTS AND CONCLUSION: At 1, 2, 4, 6, 8 weeks after modeling, Basso, Beattie and Bresnahan scores and modified Tarlov scores were significantly higher in the combined group than the cell transplantation followed by the control group (P < 0.05). At 72 hours after modeling, the expression of Bcl-2 and basic fibroblast growth factor around the injured region was significantly higher in the combined group than the cell transplantation group and control group (P < 0.05). At 4 weeks after modeling, the latencies of somatosensory and motor evoked potentials were ranked as follows: combined group < cell transplantation group < control group (P < 0.05); the amplitudes of somatosensory and motor evoked potentials were ranked as follows: combined group > cell transplantation group > control group (P < 0.05). At 8 weeks after modeling, horseradish peroxidase-labeled pyramidal cells in the cell transplantation group and combined group showed apparent crossing signs; the number of PKH-26-positive cells and horseradish peroxidase-positive cells was the most in the combined group followed by the cell transplantation group, and was the least in the control group (P < 0.05). These findings indicate that ligustrazine hydrochloride combined with bone marrow mesenchymal stem cells transplantation can facilitate nerve cell regeneration, promote the expression of Bcl-2 and basic fibroblast growth factor, and improve motor function in rats after spinal cord injury.

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

CLC Number:

R394.2

Wu Xiao-ming, Gao Wen-shan, Wang Jing, Cai Hong-yun. Neuroprotection of ligustrazine hydrochloride combined with bone marrow mesenchymal stem cell transplantation in rats with spinal cord injury[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(1): 95-101.

Figures/Tables 7

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