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Application of Human Dermal Fibroblast and Keratinocyte on Allogenic Dermis(AlloDerm®)  

Oh, Jung Chul (Department of Plastic & Reconstructive Surgery, Dongguk University College of Medicine)
Lim, Yeung Kook (Department of Plastic & Reconstructive Surgery, Dongguk University College of Medicine)
Jeong, Jae Ho (Department of Plastic & Reconstructive Surgery, Yeungnam University College of Medicine)
Publication Information
Archives of Plastic Surgery / v.33, no.5, 2006 , pp. 601-605 More about this Journal
Abstract
Purpose: Large skin defect by various causes, should be covered by autologous skin graft. But, the donor site of autologous skin graft is limited and leaves permanent donor scar and contracture. There have been our trial to engineer artificial skin using allogenic dermis (AlloDerm) with basement membrane. Methods: Dermal and epidermal layer were separated by immersing in dipase solution for 30 minutes, and the separated layers were treated with 0.05% trypsin for 10 minutes. And then each layer was cultivated to fibroblasts and keratinocytes on a culture medium. Fibroblasts were first penetrated into basement membrane of allogenic dermis facing down, then allogenic dermis was flipped over to face up and keratinocytes were transplanted to allogenic dermis. Results: Observing artificial skin fabricated in vitro, we found following: 1) The artificial skin opened in air for 5 days formed epidermal layer. In dermal layer, fibroblast was distributed evenly among all. 2) The artificial skin opened in air for 30 days formed thicker and thicker, and it formed basement membrane, spinous and granular layers. PAS stain to confirm existence of basement membrane showed positive reaction. 3) Cytokeratin 10 stain to confirm the formation of epidermal layer showed positive reaction. 4) The formation of thick keratin, lamellar body and desmosome similar to human skin were observed in result of an electron micrograph. Conclusion: As a result of research, the structure seen in normal skin such as rete ridge, is found in reproduced artificial skin. This type of artificial skin can be used as a useful model for investigating skin disease and for clinical application also.
Keywords
Artificial skin; Alloderm;
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