Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (20): 2964-2971.doi: 10.3969/j.issn.2095-4344.2016.20.011

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Mechanisms underlying the promotion of wound healing by bletilla carrying exogenous recombinant human epidermal growth factor

Wang Xiao, Cui Ping, Wu Ran, Wang Bei, Qiu Shu-lin   

  1. Department of Medical Cosmetology, Hebei General Hospital, Shijiazhuang 050051, Hebei Province, China
  • Received:2016-03-16 Online:2016-05-13 Published:2016-05-13
  • Contact: Qiu Shu-lin, Chief physician, Department of Medical Cosmetology, Hebei General Hospital, Shijiazhuang 050051, Hebei Province, China
  • About author:Wang Xiao, Master, Attending physician, Department of Medical Cosmetology, Hebei General Hospital, Shijiazhuang 050051, Hebei Province, China
  • Supported by:

    the Key Science and Technology Program of Hebei Province, China, No. 062761220

Abstract:

BACKGROUND: How to promote wound healing is always the research focus of the surgical physicians in the clinic. Recombinant human epidermal growth factor (rhEGF) can effectively promote wound healing. However, as a biological agent, it is easy to be decomposed under normal temperature.
OBJECTIVE: To explore the mechanisms underlying the promotion of wound healing in the back of rabbits by bletilla carrying exogenous rhEGF.
METHODS: Model rabbits with full-thickness skin defects in the back were treated with bletilla carrying exogenous rhEGF (combined treatment group), bletilla, rhEGF, or saline (control group).
RESULTS AND CONCLUSION: The time of wound healing was the shortest (P < 0.05) and the wound healing rate was the highest (P < 0.05) in the combined treatment group. On postoperative days 3 and 10, newly formed granulation tissue, capillaries, and collagenous fibers showed by hematoxylin-eosin staining staining and Masson staining and the strongest immunoreactivity of vascular endothelial growth factor determined by immunohistochemical staining were found in the combined treatment group (P < 0.05). These findings confirm that bletilla carrying exogenous rhEGF promotes wound healing by accelerating the forming of granulation tissue, new-born capillaries, and collagenous fibers, and the effects are superior to either of them alone.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Tissue Engineering, Granulation Tissue, Epidermal Growth Factor, Vascular Endothelial Growth Factors

CLC Number: