Lung growth after experimental pulmonary transplantation

Haverich, A; Dammenhayn, L; Demertzis, S; Kemnitz, J; Reimers, P (1991). Lung growth after experimental pulmonary transplantation. Journal of heart and lung transplantation, 2(10), pp. 288-95. New York, N.Y.: Elsevier

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Replacement of the heart and both lungs or single lung transplantation has been performed in a few cases of terminal (cardio) pulmonary disease in childhood. It remains unclear whether pulmonary allografts will meet the demands of a growing organism. Six domestic pigs (mean body weight, 24 kg) underwent left lung transplantation from donors of equal weight. Immunosuppression consisted of cyclosporine, azathioprine, and corticosteroids. After the pigs doubled their body weight, growth of the lung was assessed by bronchography and pulmonary angiography. In transplant animals it took 11 weeks (normal animals, 6 weeks) for their weight to double. At that time, the bronchial tree showed similar growth when compared with nontransplant animals of equal weight. The diameter of the left lower lobe bronchus (9.2 +/- 0.4 mm) was significantly greater than that of animals of 24 kg body weight (7.5 +/- 0.3 mm; p less than 0.01) but comparable to that of normal pigs of similar weight (9.0 +/- 0.5 mm). The same applied for length of the left lower lobe bronchus (transplants, 95 +/- 6.7 mm; controls 24 kg, 67 +/- 2 mm [p less than 0.01]; controls 48 kg, 93 +/- 3 mm). Similar growth tendencies were observed in the pulmonary vascular tree. The diameter of the left lower lobe artery was 9.4 +/- 98 mm in 48 kg transplant pigs, compared with 9.7 +/- 1.2 mm in 24 kg control pigs and 8.5 +/- 0.8 mm in 48 kg control pigs. In one case of recurrent severe pulmonary rejection, the lung did not grow. We conclude from this study that growth is retarded by immunosuppression.(ABSTRACT TRUNCATED AT 250 WORDS)

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Faculty Institutions > Teaching Staff, Faculty of Medicine
UniBE Contributor:	Demertzis, Stefanos
ISSN:	1053-2498
ISBN:	2031927
Publisher:	Elsevier
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:08
Last Modified:	05 Dec 2022 14:20
PubMed ID:	2031927
Web of Science ID:	A1991FE16600013
URI:	https://boris.unibe.ch/id/eprint/29709 (FactScience: 157886)