Extensive surface phenotyping of alveolar macrophages in interstitial lung disease.


Journal Article

There is increasing evidence implicating activated macrophages in the pathogenesis of interstitial and other lung diseases. We investigated whether there was a unique pattern of cell surface expression that constituted a disease-specific phenotype on alveolar macrophages from patients with interstitial lung disease (ILD). Macrophage cell surface receptor expression of 19 selected markers was assessed by indirect immunofluorescence and flow cytometry in bronchoalveolar lavage (BAL) fluids from patients with idiopathic pulmonary fibrosis (IPF, n = 4), scleroderma (SCL-ILD, n = 14), mild asthma (n = 7), allergy without asthma (n = 2), and normal subjects (n = 9). There was increased expression of adhesion receptors (CD11c, CD29, CD36, CD44, CD49e, CD54), receptors involved in signal transduction and/or inflammation (CD13, CD45, CD53), and other markers (CD9, CD52, CD71, CD98, HLA Class I) on macrophages from ILD patients compared to the non-ILD group. Most markers upregulated on macrophages in ILD were significantly inversely correlated with clinical parameters of disease activity such as FEV(1), FVC, and DL(CO) and positively correlated with numbers of BAL neutrophils and eosinophils. Increased expression of several cell surface markers suggests that activated alveolar macrophages may contribute to the pathophysiology of IPF and SCL-ILD.

Full Text

Cited Authors

  • Taylor, ML; Noble, PW; White, B; Wise, R; Liu, MC; Bochner, BS

Published Date

  • January 2000

Published In

Volume / Issue

  • 94 / 1

Start / End Page

  • 33 - 41

PubMed ID

  • 10607488

Pubmed Central ID

  • 10607488

Electronic International Standard Serial Number (EISSN)

  • 1521-7035

International Standard Serial Number (ISSN)

  • 1521-6616

Digital Object Identifier (DOI)

  • 10.1006/clim.1999.4803


  • eng