Beneficial effects of a novel shark-skin collagen dressing for the promotion of seawater immersion wound healing

Xian-Rong Shen; Xiu-Li Chen; Hai-Xia Xie; Ying He; Wei Chen; Qun Luo; Wei-Hong Yuan; Xue Tang; Deng-Yong Hou; Ding-Wen Jiang; Qing-Rong Wang

doi:10.1186/s40779-017-0143-4

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Beneficial effects of a novel shark-skin collagen dressing for the promotion of seawater immersion wound healing

RESEARCH | Updated：2026-03-12

- Beneficial effects of a novel shark-skin collagen dressing for the promotion of seawater immersion wound healing
- Military Medical Research Vol. 5, Issue 2, Pages: 117-128(2018)
- Affiliations：
  
  1.The PLA Key Laboratory of Biological Effect and Medical Protection on Naval Vessel Special Environment, Naval Medical Research Institute, Shanghai 200433, China
  2.College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
  3.Research Center of TCM Processing Technology, Zhejiang Chinese Medical University, Hang Zhou 311401, China
- Author bio：
  
  *: xianrong_sh@163.com
- Funds：
- DOI：10.1186/s40779-017-0143-4
  CLC：
- Published：2018-06
- Accepted：
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Shen et al.: Beneficial effects of a novel shark-skin collagen dressing for the promotion of seawater immersion wound healing. Mil Med Res, 2017, 4: 33
DOI：

Shen et al.: Beneficial effects of a novel shark-skin collagen dressing for the promotion of seawater immersion wound healing. Mil Med Res, 2017, 4: 33 DOI： 10.1186/s40779-017-0143-4.

摘要

Abstract

Background:

Wounded personnel who work at sea often encounter a plethora of difficulties. The most important of these difficulties is seawater immersion. Common medical dressings have little effect when the affected area is immersed in seawater

and only rarely dressings have been reported for the treatment of seawater-immersed wounds. The objective of this study is to develop a new dressing which should be suitable to prevent the wound from seawater immersion and to promote the wound healing.

Methods:

Shark skin collagen (SSC) was purified

via

ethanol de-sugaring and de-pigmentation and adjusted for pH. A shark skin collagen sponge (SSCS) was prepared by freeze-drying. SSCS was attached to an anti-seawater immersion polyurethane (PU) film (SSCS+PU) to compose a new dressing. The biochemical properties of SSC and physicochemical properties of SSCS were assessed by standard methods. The effects of SSCS and SSCS+PU on the healing of seawater-immersed wounds were studied using a seawater immersion rat model. For the detection of SSCS effects on seawater-immersed wounds

12 SD rats

with four wounds created in each rat

were divided into four groups: the 3rd day group

5th day group

7th day group and 12th day group. In each group

six wounds were treated with SSCS

three wounds treated with chitosan served as the positive control

and three wounds treated with gauze served as the negative control. For the detection of the SSCS+PU effects on seawater-immersed wounds

36 SD rats were divided into three groups: the gauze (GZ)+PU group

chitosan (CS)+PU group and SSCS+PU group

with 12 rats in each group

and two wounds in each rat. The wound sizes were measured to calculate the healing rate

and histomorphology and the immunohistochemistry of the CD31 and TGF-β expression levels in the wounded tissues were measured by standard methods.

Results:

The results of Ultraviolet-visible (UV-vis) spectrum

Fourier-transform infrared (FTIR) spectrum

circular dichroism (CD) spectra

sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE)

and amino acid composition analyses of SSC demonstrated that SSC is type I collagen. SSCS had a homogeneous porous structure of approximately 200μm

porosity rate of 83.57%±2.64%

water vapor transmission ratio (WVTR) of 4500g/m

tensile strength of 1.79±0.41N/mm

and elongation at break of 4.52%±0.01%. SSCS had significant beneficial effects on seawater-immersed wound healing. On the 3rd day

the healing rates in the GZ negative control

CS positive control and SSCS rats were 13.94%±5.50%

29.40%±1.10% and 47.24%±8.40%

respectively. SSCS also enhanced TGF-β and CD31 expression in the initial stage of the healing period. The SSCS+PU dressing effectively protected wounds from seawater immersion for at least 4h

and accelerated re-epithelialization

vascularization and granulation formation of seawater-immersed wounds in the earlier stages of wound healing

and as well as significantly promoted wound healing. The SSCS+PU dressing also enhanced expression of TGF-β and CD31. The effects of SSCS and SSCS+PU were superior to those of both the chitosan and gauze dressings.

Conclusion:

SSCS has significant positive effects on the promotion of seawater-immersed wound healing

and a SSCS+PU dressing effectively prevents seawater immersion

and significantly promotes seawater-immersed wound healing.

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Keywords

references

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