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- W2078398950 abstract "The present study was undertaken to evaluate the possibility of permanent skin replacement using chimeric xenogeneic-syngeneic graftable sheets previously obtained in vitro. Newborn (<3 days old) BALB/c and human keratinocytes were isolated and cocultured in different ratios as follows: 50% BALB/c to 50% human and 25% BALB/c to 75% human keratinocytes. Four to 5 days after culture and prior to their grafting, all chimeric sheets contained both cell types in ratios similar to those used to seed the initial chimeric cultures. Fourteen and 30 days after chimeric sheet grafting onto BALB/c mice dorsum, the newly generated cutaneous tissue showed a histologically well-organized epidermis presenting basal and suprabasal cell layers. Cutaneous cells in these structures secreted laminin and type IV collagen in blood vessels, and at ground level of the dermoepidermal junction there were signs of physiologically active skin. Cell phenotyping revealed the presence of only syngeneic keratinocytes, whereas xenogeneic cells were passively eliminated without a total rejection of the chimeric implant. This selective and passive elimination of xenogeneic keratinocytes went through cellular and humoral immunity activation. Data suggest that this chimeric culture method can be used for cutaneous therapies such as large congenital nevi, skin ulcers, and extensively burned skin. Indeed, for large third-degree wounded skin treatment, this culture method may shorten the time (4-5 weeks) needed for cell growth and graftable sheet production. Moreover, since the ultimate aim in allogeneic and xenogeneic transplantation is to achieve an immunological acceptance and tolerance to these foreign tissues, the chimeric culture approach may provide ways to lighten tolerance phenomena on cutaneous tissue." @default.
- W2078398950 created "2016-06-24" @default.
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- W2078398950 date "1996-05-01" @default.
- W2078398950 modified "2023-10-17" @default.
- W2078398950 title "PERMANENT SKIN REPLACEMENT USING CHIMERIC EPITHELIAL CULTURED SHEETS COMPRISING XENOGENEIC AND SYNGENEIC KERATINOCYTES1" @default.
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- W2078398950 doi "https://doi.org/10.1097/00007890-199605150-00002" @default.
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