• T Omi, O Kawanami, K Matsuda, A Tsujii, M Kawai, H Henmi, and V J Ferrans.
• Pathology and Clinical Research Laboratory, Nippon Medical School, Second Hospital, Kawasaki-shi, Japan.
• Burns. 1996 May 1; 22 (3): 206-11.

AbstractCombined transplantation of skin autograft and allograft was used for the treatment of severe burns. The allografts were obtained from cadavers and were pretreated with 15 per cent glycerol for 2 h at 4 degrees C then frozen at -80 degrees C until used. Patches of autografts were placed over the burns and were covered by a stretched mesh of allografts. Biopsy samples of transplanted skin were obtained from 5 days to 4 weeks after grafting. Sections were examined by histological and immunohistochemical strainings. At 4 days, the epidermal-dermal junction of allografted skin was separated due to migration of epithelial cells derived from autograft epidermis or from skin appendages of recipient dermis. At 2 weeks, dermal fibroblasts and capillaries proliferated in autografts. At 3 weeks, the dermal components of the allograft were covered by epithelial cells from recipient tissue and were invaded by fibroblasts and capillaries. At 4 weeks, allografted skin was replaced by granulation tissue, which mediated the adhesion of the grafts to the underlying tissue. Skin allografts with a freeze-thawing pretreatment provide an appropriate matrix for the epithelial relining and for the growth of granulation tissue in burned skin.

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