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Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells

  • Authors:
    • Yu‑Hai Wang
    • Jian Chen
    • Jing Zhou
    • Feng Nong
    • Jin‑Han Lv
    • Jia Liu
  • View Affiliations / Copyright

    Affiliations: Department of Orthopedics, Ningxia People's Hospital, First Affiliated Hospital of Northwest University for Nationalities, Yinchuan, Ningxia 750000, P.R. China, Department of Orthopedic Surgery, Chongqing Three Gorges Central Hospital, Chongqing 404000, P.R. China, Department of Anatomy, Youjiang Medical College for Nationalities, Baise, Guangxi 533000, P.R. China, Department of Orthopedics, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, Guangxi 533000, P.R. China
    Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 203-207
    |
    Published online on: December 1, 2016
       https://doi.org/10.3892/etm.2016.3941
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Abstract

Therapy using acellular spinal cord (ASC) scaffolds seeded with bone marrow stromal cells (BMSCs) has previously been shown to restore function of the damaged spinal cord and improve functional recovery in a rat model of acute hemisected spinal cord injury (SCI). The aim of the present study was to determine whether BMSCs and ASC scaffolds promote the functional recovery of the damaged spinal cord in a rat SCI model through regulation of apoptosis and immune responses. Whether this strategy regulates secondary inflammation, which is characterized by the infiltration of immune cells and inflammatory mediators to the lesion site, in SCI repair was investigated. Basso, Beattie, and Bresnahan scores revealed that treatment with BMSCs seeded into an ASC scaffold led to a significant improvement in motor function recovery compared with treatment with an ASC scaffold alone or untreated controls at 2 and 8 weeks after surgery (P<0.05). Two weeks after transplantation, the BMSCs seeded into an ASC scaffold significantly decreased the number of terminal deoxynucleotidyl transferase dUTP nick end labeling‑positive cells, as compared with the ASC scaffold only and control groups. These results suggested that the use of BMSCs decreased the apoptosis of neural cells and thereby limited tissue damage at the lesion site. Notably, the use of BMSCs with an ASC scaffold also decreased the recruitment of macrophages (microglia; P<0.05) and T lymphocytes (P<0.05) around the SCI site, as indicated by immunofluorescent markers. By contrast, there was no inhibition of the inflammatory response in the control and ASC scaffold only groups. BMSCs regulated inflammatory cell recruitment to promote functional recovery. However, there was no significant difference in IgM‑positive expression among the three groups (P>0.05). The results of this study demonstrated that BMSCs seeded into ASC scaffolds for repair of spinal cord hemisection defects promoted functional recovery through the early regulation of inflammatory cell recruitment with inhibition of apoptosis and secondary inflammation.
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Copy and paste a formatted citation
Spandidos Publications style
Wang YH, Chen J, Zhou J, Nong F, Lv JH and Liu J: Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells. Exp Ther Med 13: 203-207, 2017.
APA
Wang, Y., Chen, J., Zhou, J., Nong, F., Lv, J., & Liu, J. (2017). Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells. Experimental and Therapeutic Medicine, 13, 203-207. https://doi.org/10.3892/etm.2016.3941
MLA
Wang, Y., Chen, J., Zhou, J., Nong, F., Lv, J., Liu, J."Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells". Experimental and Therapeutic Medicine 13.1 (2017): 203-207.
Chicago
Wang, Y., Chen, J., Zhou, J., Nong, F., Lv, J., Liu, J."Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells". Experimental and Therapeutic Medicine 13, no. 1 (2017): 203-207. https://doi.org/10.3892/etm.2016.3941
Copy and paste a formatted citation
x
Spandidos Publications style
Wang YH, Chen J, Zhou J, Nong F, Lv JH and Liu J: Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells. Exp Ther Med 13: 203-207, 2017.
APA
Wang, Y., Chen, J., Zhou, J., Nong, F., Lv, J., & Liu, J. (2017). Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells. Experimental and Therapeutic Medicine, 13, 203-207. https://doi.org/10.3892/etm.2016.3941
MLA
Wang, Y., Chen, J., Zhou, J., Nong, F., Lv, J., Liu, J."Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells". Experimental and Therapeutic Medicine 13.1 (2017): 203-207.
Chicago
Wang, Y., Chen, J., Zhou, J., Nong, F., Lv, J., Liu, J."Reduced inflammatory cell recruitment and tissue damage in spinal cord injury by acellular spinal cord scaffold seeded with mesenchymal stem cells". Experimental and Therapeutic Medicine 13, no. 1 (2017): 203-207. https://doi.org/10.3892/etm.2016.3941
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