Efficacy of gelatin gel sheets in sustaining the release of basic fibroblast growth factor for murine skin defects

HANDLE Open Access
  • Sakamoto, Michiharu
    Department of Plastic and Reconstructive Surgery, Kyoto University Graduate School of Medicine
  • Morimoto, Naoki
    Department of Plastic and Reconstructive Surgery, Kansai Medical University
  • Ogino, Shuichi
    Department of Plastic and Reconstructive Surgery, Kyoto University Graduate School of Medicine
  • Jinno, Chizuru
    Department of Plastic and Reconstructive Surgery, Kyoto University Graduate School of Medicine
  • Taira, Tsuguyoshi
    Gunze Limited Medical Division
  • Suzuki, Shigehiko
    Department of Plastic and Reconstructive Surgery, Kyoto University Graduate School of Medicine

Abstract

Background: Gelatin has been used as a material sustaining the release of basic fibroblast growth factor (bFGF), which promotes fibroblast proliferation and capillary formation and accelerates wound healing. In the application of these materials, bFGF is impregnated immediately before application, and it is difficult to conform the shape to the wound. In this study, we prepared a pliable and plastic gelatin gel sheet (GGS) that sustains bFGF and conforms to the shape of the wound as a result of cross-linking just before application. In addition, we examined the sustained release profile of bFGF from GGS and its effect on wound healing in murine skin defects. Materials and methods: A 13-wt% gelatin solution was mixed with bFGF before cross-linking with 1% glutaraldehyde solution. GGSs impregnated with 7 μg/cm2 of bFGF were incubated in phosphate-buffered saline and collagenase solution, and GGS degradation and bFGF release were evaluated. In the murine experiments, GGSs treated without bFGF and GGSs impregnated with 1, 3.5, 7, or 14 μg/cm2 of bFGF were applied to full-thickness skin defects created on the backs of C57BL/6JJcl mice, and the wound closure, epithelial length, extent of granulation tissue and capillary formation were compared. Results: bFGF was released according to the degradation of GGS in phosphate-buffered saline, and the remaining bFGF was released in collagenase solution. In the animal studies, epithelialization was accelerated in the GGSs treated with 1 and 3.5 μg/cm2 of bFGF, and granulation tissue formation and angiogenesis were promoted based on the amount of bFGF impregnated into the GGS. Conclusions: GGS impregnated with bFGF is capable of sustaining the release of bFGF, with consequent accelerated epithelialization, granulation tissue formation, and angiogenesis in vivo. GGS is a novel and promising wound dressing that sustains bFGF and can be adapted to the shape of various wounds in the treatment of both acute and chronic wounds.

Journal

Keywords

Details 詳細情報について

  • CRID
    1050569000704866560
  • NII Article ID
    120006996964
  • ISSN
    00224804
  • HANDLE
    2433/262412
  • Text Lang
    en
  • Article Type
    journal article
  • Data Source
    • IRDB
    • CiNii Articles

Report a problem

Back to top