Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (12): 1711-1717.doi: 10.3969/j.issn.2095-4344.2016.12.006

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Allogenic chondrocytes-polyglycolic acid compound for repair of thyroid cartilage defects

Qiao Zhan-qing1, Zhang Jun1, Ma Sai1, Ma Zhen-ya1, Si Yuan-zheng1, Qiao Xin-ming2   

  1. 1Department of Otolaryngology, First Affiliated Hospital of Nanyang Medical College, Nanyang 473058, Henan Province, China; 2Basic School of Zhengzhou University, Department of Otolaryngology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, Henan Province, China
  • Received:2016-01-12 Online:2016-03-18 Published:2016-03-18
  • Contact: Qiao Zhan-qing, Department of Otolaryngology, First Affiliated Hospital of Nanyang Medical College, Nanyang 473058, Henan Province, China
  • About author:Qiao Zhan-qing, Associate chief physician, Department of Otolaryngology, First Affiliated Hospital of Nanyang Medical College, Nanyang 473058, Henan Province, China

Abstract:

BACKGROUND: Tissue-engineered bone can be obtained by the combination of chondrocytes and polyglycolic acid scaffold.
OBJECTIVE: To investigate the effect of allogeneic chondrocytes/polyglycolic acid scaffold compound in the repair of thyroid cartilage defects in rabbits.
METHODS: Twenty New Zealand adult rabbits were randomly divided into experimental group with implantation of allogeneic chondrocytes/polyglycolic acid scaffold compound and control group with implantation of polyglycolic acid scaffold. Gross and histological observations were done at 4 and 8 weeks after implantation.  
RESULTS AND CONCLUSION: (1) Gross observation results: 4 weeks after surgery, cartilage defects in the experimental group were repaired certainly, and no necrosis appeared in the repair area; in the control group, the defects were filled with muscle and connective tissues. At 8 weeks after implantation, cartilage defects in the experimental group were further repaired, with unclear repair boundaries, and in the control group, cartilage defects were no repaired and showed a notable boundary with the surrounding normal cartilage tissues. (2) Immunohistochemical staining results: the expression of type II collagen in the experimental group was higher than that in the control group (P < 0.05) at 4 and 8 weeks after implantation. These findings indicate that the allogeneic chondrocytes/polyglycolic acid scaffold compound can promote the repair of thyroid cartilage defects in rabbits.