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Uterine allotransplantation in ewes using an aortocava patch
T Gauthier1, F Bertin, L Fourcade
1Obstetrics and Gynecology Department, Hôpital Mère-Enfant, CHU Dupuytren, av Larrey, Limoges 87000, France. gauthiertristan@yahoo.fr
Human Reproduction (Oxford, England)
|September 8, 2011
Summary
This study explored uterine allotransplantation in ewes using an aortocava patch, finding high rates of transplant necrosis due to mobility, pedicle length, and rejection. Magnetic resonance imaging (MRI) proved useful for graft assessment.
Area of Science:
- Veterinary Medicine
- Surgical Innovation
- Transplantation Science
Background:
- Investigated a novel uterine allotransplantation model in ewes.
- Utilized an aortocava patch for vascular anastomosis.
Purpose of the Study:
- To establish and evaluate a uterine orthotopic allotransplantation model in ewes.
- To assess graft viability and outcomes using various monitoring techniques.
Main Methods:
- Performed 10 uterine orthotopic allotransplantations with aortocava donor patch anastomosis.
- Administered a combination immunosuppressive protocol of cyclosporine and mycophenolic acid.
- Monitored graft status via vaginoscopy, MRI, and second-look laparotomy.
Main Results:
- Vascular anastomoses were patent initially, but aortocava vascular pedicles became thrombosed.
- Cervical biopsies revealed necrosis in all assessed grafts; endometrial tissue present in 2/6.
- MRI results correlated with macroscopic findings, indicating graft issues.
Conclusions:
- Transplant mobility, vascular pedicle length, and rejection contribute to high necrosis rates.
- Ruminant digestive anatomy complicates optimal immunosuppressive therapy delivery.
- MRI is a valuable non-invasive tool for graft evaluation in this model.
