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Erschienen in: Virchows Archiv 3/2010

01.09.2010 | Original Article

Obliterative airway remodelling in transplanted and non-transplanted lungs

verfasst von: Danny Jonigk, Katharina Theophile, Kais Hussein, Oliver Bock, Ulrich Lehmann, Clemens L. Bockmeyer, Jens Gottlieb, Stefan Fischer, Andre Simon, Tobias Welte, Lavinia Maegel, Hans Kreipe, Florian Laenger

Erschienen in: Virchows Archiv | Ausgabe 3/2010

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Abstract

Obliterative airway remodelling is a morphological sequence in a variety of pulmonary diseases. Notably, bronchiolitis obliterans represents one of the key complications of lung transplantation, induced by (immigrating) myofibroblasts. A comparative expression analysis of obliterative airway remodelling in transplanted and non-transplanted patients has not been reported so far. Obliterated and unremodelled airways from explanted lungs (n = 19) from patients suffering from chronic allograft dysfunction, infection, graft-versus-host disease and toxic exposure were isolated by laser-assisted microdissection. Airways from lung allografts harvested shortly before and after transplantation (n = 4) as well as fibroblastic foci from lungs with interstitial pulmonary fibrosis (n = 4) served as references. Pre-amplified cDNA was analysed by quantitative real-time RT-PCR for expression of fibrosis, inflammation and apoptosis-associated genes. Composition of infiltrating cells and protein expression were assessed by conventional histology and immunohistochemistry. Bronchiolitis obliterans in transplanted patients showed a significant increase of BMP-7 expression (p = 0.0141 compared with controls), while TGF-β1 and FGF-2 as well as BMP-4 and BMP-7 were up-regulated in fibroblastic foci in interstitial pulmonary fibrosis (p < 0.0424 compared with controls). Regarding other fibrosis-associated genes (BMP-6, SMAD-3, CASP-3 and CASP-9, FASLG, NF-KB1, IL-1 and IL-2) as well as cellularity and cellular composition, no significant differences between obliterative airway remodelling in transplanted and non-transplanted patients could be shown. Obliterative airway remodelling in lung allografts and in non-transplanted patients share many morphological and genetic traits. BMPs, especially BMP-7, warrant further investigation as possible markers for the aggravation of airway remodelling.
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Metadaten
Titel
Obliterative airway remodelling in transplanted and non-transplanted lungs
verfasst von
Danny Jonigk
Katharina Theophile
Kais Hussein
Oliver Bock
Ulrich Lehmann
Clemens L. Bockmeyer
Jens Gottlieb
Stefan Fischer
Andre Simon
Tobias Welte
Lavinia Maegel
Hans Kreipe
Florian Laenger
Publikationsdatum
01.09.2010
Verlag
Springer-Verlag
Erschienen in
Virchows Archiv / Ausgabe 3/2010
Print ISSN: 0945-6317
Elektronische ISSN: 1432-2307
DOI
https://doi.org/10.1007/s00428-010-0949-x

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