학술논문
Soluble membrane-type 1 matrix metalloproteinase (MT1-MMP) and gelatinase A (MMP-2) in induced sputum and bronchoalveolar lavage fluid of human bronchial asthma and bronchiectasis.
Document Type
Article
Author
Source
Subject
*SPUTUM
*BRONCHOALVEOLAR lavage
*LUNG disease diagnosis
*ASTHMA
*BRONCHIECTASIS
*WESTERN immunoblotting
*IMMUNOHISTOCHEMISTRY
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Language
ISSN
0903-4641
Abstract
The aim of this study was to investigate the involvement of the MT1-MMP/MMP-2 cascade in induced sputum (IS) and bronchoalveolar lavage fluid (BALF) from bronchial asthma (BA) and bronchiectasis (BE) patients and healthy controls. The molecular forms and cellular origins of MT1-MMP and MMP-2 were determined by Western immunoblotting, immunohistochemistry and in situ hybridization. Elevated levels of soluble activated and autocatalyzed MT1-MMP species as well as activated forms of MMP-2 in IS and BALF samples from BA and BE patients were evidenced. The activation degrees of soluble MT1-MMP and MMP-2 were significantly correlated in BA and BE IS and BALF. Only low levels of both these MMPs were observed in healthy control IS and BALF. The co-expression of MMP-2 with MT1-MMP was evidenced by double immunostaining in bronchial epithelial cells, submucosal glandular cells, smooth muscle cells and monocyte/macrophages. The MT1-MMP/MMP-2 cascade is present and active in human inflammatory lung disease fluid and tissue samples. This cascade seemingly reflects the active destructive phases of these chronic lung diseases. [ABSTRACT FROM AUTHOR]