[Revitalization of bovine xenograft used for repair of experimental tracheal defects (author's transl)]

Tracheal transplantation. III. Demonstration of transplantation antigens on the tracheal mucosa of inbred rat strains

Tracheal transplants were performed on inbred strains of rats. Monoclonal antibodies were used in combination with the biotin-avidin technique for demonstrating donor-specific RT1 Ac transplantation antigen. Transplantation antigens were predominantly contained in the tracheal mucosal cells. No donor-specific antigens could be found in the mucosa of transplants which survived orthotopic tracheal transplantation for longer than 210 days. This suggests that the mucosa of the transplant is rejected and replaced by a mucosa from the recipient.

[Laryngeal and tracheal stenoses (author's transl)]

Following the recent literature and our clinical experiences we try to present a review of the most common reasons, the pathogenetic factors, and the preferred localisation of laryngeal and tracheal stenoses. We offer a therapeutic concept corresponding with our experimental findings and discuss the different surgical techniques as well as the clinical results we obtained.