Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (32): 5204-5209.doi: 10.3969/j.issn.2095-4344.2015.32.022

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Calcium alginate/bone marrow mesenchymal stem cells combined with degradation membrane for repair of skin defects

Wang Nan1, Sun Pei-jie2, Su Qiu-xiang2, Fu Ling3, Zhou Zhe4, Li Na-ran2, Yang Xiao-xia5   

  1. 1Dalian Medical University, Dalian 116044, Liaoning Province, China; 
    2Morphology Center, Shenyang Medical College, Shenyang 110034, Liaoning Province, China; 
    3Department of Hand Surgery, Fengtian Hospital of Shenyang Medical College, Shenyang 110024, Liaoning Province, China; 
    4Forensic Center of Shenyang Interpol Detachment, Shenyang 110000, Liaoning Province, China; 
    5School of Medical Application Technology, Shenyang Medical College, Shenyang 110034, Liaoning Province, China
  • Online:2015-08-06 Published:2015-08-06
  • Contact: Li Na-ran, Senior experimentalist, Morphology Center, Shenyang Medical College, Shenyang 110034, Liaoning Province, China Corresponding author: Yang Xiao-xia, Master, Professor, School of Medical Application Technology, Shenyang Medical College, Shenyang 110034, Liaoning Province, China
  • About author:Wang Nan, Dalian Medical University, Dalian 116044, Liaoning Province, China

Abstract:

BACKGROUND: Skin transplantation is regarded as the most effective therapy for large-area skin defects, which is limited by donor sources and immune rejection. Therefore, it is extremely accelerate the construction of the dermis in skin tissue engineering.
OBJECTIVE: To investigate the effects of bone marrow mesenchymal stem cells/calcium alginate gel, basic fibroblast growth factor and degradation membrane on the repair of full-thickness skin defects.
METHODS: Bone marrow mesenchymal stem cells were isolated from 15 New Zealand rabbits, and then cultured, amplified, subcultured and purified. Three full-thickness skin defects were made on the back of every rabbit, and randomly treated with bone marrow mesenchymal stem cells/calcium alginate gel, basic fibroblast growth factor and degradation membrane as experimental group, bone marrow mesenchymal stem cells/calcium alginate gel as control 1 group, and calcium alginate gel as control 2 group. The wounds were all covered with amniotic membrane. After 7, 14, 21 days, new wound tissues were taken for hematoxylin-eosin staining, immunohistochemistry staining and image analysis.
RESULTS AND CONCLUSION: Dermis tissues in the experimental group were obviously thicker than those in control 1 and control 2 groups; there were more fibroblasts, vessels and collagen fibers in the experimental group. Especially at 14 and 21 days after operation, epidermal hyperplasia was faster with a larger coverage area in the experimental group, and at 21 days, the new epidermal tissues mainly exhibited multi-layered structure, which was superior to the control 1 and 2 groups. It follows that the combination of bone marrow mesenchymal stem cells/calcium alginate gel, basic fibroblast growth factor and degradation membrane for skin defects can accelerate the repair and regeneration of the dermis, and thus promote the epidermis regeneration and reconstruction.

 

Key words: Bone Marrow, Mesenchymal Stem Cells, Alginates, Fibroblast Growth Factor 2

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