Document Detail

TGF-beta1 in bronchoalveolar lavage fluid in diffuse parenchymal lung diseases and high-resolution computed tomography score.
MedLine Citation:
PMID:  20693957     Owner:  NLM     Status:  In-Process    
INTRODUCTION: In the pathogenesis of diffuse parenchymal lung diseases (DPLDs), growth factors, including transforming growth factor beta1 (TGF-beta1), are responsible for cell proliferation, apoptosis, chemotaxis, and angiogenesis, and also for the production and secretion of some components of the extracellular matrix. OBJECTIVES: The aim of the study was to evaluate correlations in DPLDs between TGF-beta1 levels in bronchoalveolar lavage (BAL) fluid and high-resolution computed tomography (HRCT) score. PATIENTS AND METHODS: The study was performed in 31 DPLD patients in whom a selection of lung segments with high and low intensity of abnormalities was estimated by HRCT score. All patients underwent BAL with TGF-beta1 measured by an enzyme immunoassay in BAL fluid and video-assisted thoracic surgery lung biopsy from both selected segments. RESULTS: All 31 patients were diagnosed, and based on histopathology, they were classified into 2 groups: idiopathic interstitial pneumonia (usual interstitial pneumonia - 12, nonspecific inter stitial pneumonia - 2, cryptogenic organizing pneumonia - 2, and desquamative interstitial pneumonia - 1) and granulomatous disease (sarcoidosis - 7, extrinsic allergic alveolitis - 5, and histiocytosis X - 2). The final analysis was performed in 28 patients who showed nonhomogenous distribution on HRCT. TGF-beta1 levels in BAL fluid were significantly higher in the areas with high intensity of abnormalities assessed by HRCT score (P = 0.018, analysis of variance). These levels were not different between the groups, but a trend towards higher levels in idiopathic inter stitial pneumonia was observed. CONCLUSIONS: The results confirm that TGF-beta1 may be a good but not specific marker of fibrosis in DPLDs. A significant positive correlation between TGF-beta1 levels in BAL fluid and the HRCT score was observed.
Artur Szlubowski; Jerzy Soja; Piotr Grzanka; Romana Tomaszewska; Bolesław Papla; Jarosław Kuzdzał; Adam Cmiel; Krzysztof Sładek
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Polskie Archiwum Medycyny Wewnętrznej     Volume:  120     ISSN:  1897-9483     ISO Abbreviation:  Pol. Arch. Med. Wewn.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-08-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401225     Medline TA:  Pol Arch Med Wewn     Country:  Poland    
Other Details:
Languages:  eng     Pagination:  270-5     Citation Subset:  IM    
Endoscopy Unit, John Paul II Hospital, Kraków, Poland.
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