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Model for experimental revascularized laryngeal allotransplantation
M A Birchall1, M Bailey, E V Barker
1Department of Otolaryngology, University of Bristol, Bristol, UK. martin.birchall@bristol.ac.uk
The British Journal of Surgery
|October 23, 2002
Summary
A pig model for laryngeal transplantation was successfully developed. This preclinical model allows for further research into laryngeal allotransplantation and addresses key questions in the field.
Area of Science:
- Transplantation immunology
- Surgical innovation
- Preclinical research
Background:
- Human laryngeal transplantation has been achieved, but a suitable animal model is needed to address remaining questions.
- Existing models do not fully recapitulate the complexities of laryngeal allotransplantation.
Purpose of the Study:
- To develop and evaluate a pig model for laryngeal allotransplantation.
- To assess the feasibility and outcomes of revascularized laryngeal allografts in pigs.
Main Methods:
- A pig model was established, involving organ perfusion studies and subsequent laryngeal allotransplantation.
- Revascularization was performed by connecting the donor's right cervical vascular tree to the recipient's common carotid artery.
- Immunosuppression utilized tacrolimus, with grafts examined endoscopically for up to 14 days.
Main Results:
- The pig larynx demonstrated adequate perfusion via the right cervical vascular tree.
- Congenic grafts were well tolerated, and seven out of eight allografts remained healthy for 14 days.
- The median operating time was 6 hours, with a median cold ischemia time of 3 hours.
Conclusions:
- Revascularized laryngeal allotransplants are reliably achievable in pigs.
- This pig model serves as a valuable preclinical platform for laryngeal transplantation research.
- The model facilitates further investigation into optimizing surgical techniques and immunosuppressive strategies.