Improvement of wound healing by regulated oxygen‐enriched negative pressure‐assisted wound therapy in a rabbit model. (21st September 2017)

• Record Type: Journal Article
• Authors: Li, Y. Z.; Hu, X. D.; Lai, X. M.; Li, Y. F.; Lei, Y.
• Is Part Of: Clinical and experimental dermatology. Volume 43:Number 1(2018)
• Page Start: 11
• Page End: 18
• Publication Date: 2017-09-21
• Subjects: Skin -- Diseases -- Periodicals; 616.5
• DOI: 10.1111/ced.13225
• Languages: English
• ISSNs: 0307-6938

Abstract

Summary: Background: Development of drug therapies and other techniques for wound care have resulted in significant improvement of the cure rate and shortening of the healing time for wounds. A modified technique of regulated oxygen‐enriched negative pressure‐assisted wound therapy (RO‐NPT) has been reported. Aim: To evaluate the efficacy and impact of RO‐NPT on wound recovery and inflammation. Methods: Infected wounds were established on 40 adult female white rabbits, which were then randomized to one of four groups: O2 group, regulated negative pressure‐assisted wound therapy (RNPT) group, regulated oxygen‐enriched negative pressure‐assisted wound therapy (RO‐NPT) group and healthy control (HC) group. Each day, the O2 group was treated with a constant oxygen supply (1 L/min) to the wound, while the RNPT group was treated with continuous regulated negative pressure (70 ± 5 mmHg) and the RNPT + O2 group was treated with both. The HC group was treated with gauze dressing alone, which was changed every day. Leucocyte count, colony count and wound‐healing rate were calculated. Levels of tumour necrosis factor (TNF)‐α, interleukin (IL)‐1β and IL‐8 were evaluated by ELISA. Results: RO‐RNPT significantly decreased bacterial count and TNF‐α level, and increased the wound‐healing rate. IL‐1β, IL‐8 and leucocyte count had a tendency to increase in the early phase of inflammation and a tendency to decrease in the later phase of inflammation in the RO‐RNPT group. Conclusions: RO‐NPT therapy assisted wound recovery and inflammation control compared with the RNPT and oxygen‐enriched therapies. RO‐NPT therapy also increased levels of IL‐1β and IL‐8 and attenuated expression of TNF‐α in the early phase of inflammation.