Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (25): 4064-6068.doi: 10.3969/j.issn.2095-4344.2015.25.025

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Vacuum sealing drainage with biological foam dressing accelerates the healing of chronic wounds: changes in gelatinase activity 

Yang Ping, Yan Hong-wei, Gong Hui, Liu Hua, Ni Zhi-min, Tian Shi-zheng   

  1. Department of Burn and Plastic Surgery, People’s Hospital of Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • Online:2015-06-18 Published:2015-06-18
  • Contact: Tian Shi-zheng, Department of Burn and Plastic Surgery, People’s Hospital of Hubei University of Medicine, Shiyan 442000, Hubei Province, China
  • About author:Yang Ping, Master, Associate chief physician, Department of Burn and Plastic Surgery, People’s Hospital of Hubei University of Medicine, Shiyan 442000, Hubei Province, China

Abstract:

BACKGROUND: Studies have shown that vacuum sealing drainage can accelerate wound healing through increasing the wound blood flow, but its influence on activated gelatinases in human chronic wound still lacks corresponding research.
OBJECTIVE: To observe the effect of vacuum sealing drainage on the activity of gelatinase during the healing of chronic wounds.
METHODS: Totally 96 trauma patients admitted at the People’s Hospital of Hubei University of Medicine from April 2013 to January 2014 were divided into two groups: 52 patients in chronic wound group were treated with vacuum sealing drainage and 44 in control group treated with wound drainage at 3 days after removal of breast cancer. In the chronic wound group, exudates from pressure sores and skin necrosis after removal of breast cancer were collected as samples A and B; exudates from two cases of venous stasis ulcer were collected as samples C and D; exudates from traumatic skin wounds collected as sample E.
RESULTS AND CONCLUSION: TLC analyzer showed that: after 15-day negative pressure therapy, activities of matrix metalloproteinase 2 in sample A with low activity of gelatinase, matrix metalloproteinase 9 in sample B, matrix metalloproteinase 2 and 9 in samples C, D, E were all increased significantly (P < 0.05); however, the activities of matrix metalloproteinase 9 in sample A with high activity of gelatinases and matrix metalloproteinase 2 in sample B were reduced significantly after treatment (P < 0.05). In addition, no significant difference was found in the activity of matrix metalloproteinase 2, matrix metalloproteinase 9 and activated gelatinase between 
the chronic wound group and control group (P > 0.05). These findings indicate that the variation of activated gelatinases activity in human chronic wounds may be the reason why the chronic wounds cannot be healed for a long time, but vacuum sealing drainage can regulate the activity of activated gelatinases in chronic wounds.

Key words: Drainage, Negative-Pressure Wound Therapy, Wound Healing, Matrix Metalloproteinases, Treatment Outcome

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