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Lung growth after experimental pulmonary transplantation
A Haverich1, L Dammenhayn, S Demertzis
1Hannover Medical School, Division of Thoracic and Cardiovascular Surgery, F.R.G.
Summary
Lung transplantation in growing pigs showed that while bronchial and vascular trees grew comparably to controls, immunosuppression may retard overall lung growth. Further research is needed for pediatric pulmonary allografts.
Area of Science:
- Pediatric surgery
- Thoracic surgery
- Transplantation immunology
Background:
- Pediatric lung transplantation is rare.
- The ability of pulmonary allografts to meet the demands of a growing organism remains unclear.
Purpose of the Study:
- To assess the growth of pulmonary allografts in a pediatric model.
- To evaluate the impact of immunosuppression on lung growth post-transplantation.
Main Methods:
- Left lung transplantation was performed in six domestic pigs.
- Immunosuppression included cyclosporine, azathioprine, and corticosteroids.
- Lung growth was assessed by bronchography and pulmonary angiography after body weight doubled.
Main Results:
- Transplanted pigs took longer to double their body weight compared to controls.
- Bronchial and pulmonary vascular trees showed comparable growth to age-matched controls.
- One case of severe pulmonary rejection resulted in stunted lung growth.
Conclusions:
- Pulmonary allografts can exhibit significant growth in a pediatric model.
- Immunosuppression appears to retard lung growth.
- Further studies are warranted to optimize outcomes for pediatric lung transplantation.