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Normal keratinized mucosa transplants in nude mice
Acta Odontologica Scandinavica
|January 1, 1981
Summary
Human and rat keratinized mucosa were transplanted into nude mice. While histology remained similar, human mucosa outgrowths were unkeratinized, and rat mucosa outgrowths remained keratinized.
Area of Science:
- Tissue engineering
- Transplantation biology
- Grafting research
Background:
- Keratinized mucosa serves protective roles in oral and digestive tracts.
- Understanding mucosal graft behavior in vivo is crucial for regenerative medicine.
- Nude mouse models provide a platform for xenotransplantation studies.
Purpose of the Study:
- To investigate the in vivo behavior of human palatal and rat forestomach mucosa xenografts.
- To assess the maintenance of original histologic features and keratinization patterns post-transplantation.
- To compare the host-graft interactions between different mucosal types and mouse strains.
Main Methods:
- Subcutaneous transplantation of intact human palatal mucosa specimens into nu/nu NC nude mice.
- Subcutaneous transplantation of intact rat forestomach mucosa specimens into nu/nu BALB/c/BOM nude mice.
- Histologic analysis of recovered grafts and epithelial outgrowths after defined periods.
Main Results:
- High recovery rate for human palatal mucosa (96%) after 42 days.
- Moderate recovery rate for rat forestomach mucosa (63%) after 21 days.
- Human palatal mucosa outgrowths showed a loss of keratinization, while rat forestomach mucosa outgrowths maintained keratinization.
Conclusions:
- Keratinized mucosal xenografts can survive in nude mice, retaining original histologic characteristics.
- Epithelial outgrowths exhibit differential keratinization patterns, suggesting host or graft-specific regulation.
- Further research is needed to elucidate the mechanisms controlling keratinization in mucosal grafts.