PMID: 9176534May 1, 1997Paper

Analysis of T cell subsets and beta chemokines in patients with pulmonary sarcoidosis

Thorax
K IidaShigeru Kohno

Abstract

Sarcoidosis is a systemic granulomatous disorder of unknown origin characterised by accumulation of T lymphocytes and macrophages in multiple organs. Several cytokines and adhesion molecules may contribute to the accumulation of T lymphocytes in pulmonary sarcoidosis. The distribution of T lymphocyte subsets, T cell bearing CD11a and beta chemokines such as regulated on activation normal T expressed and secreted (RANTES), macrophage inflammatory peptide 1 alpha (MIP-1 alpha), and macrophage chemoattractant protein 1 (MCP-1) in bronchoalveolar lavage (BAL) fluid and peripheral blood were compared in untreated patients with sarcoidosis and normal subjects. Flow cytometric analysis with monoclonal antibodies to cell surface antigens was used to identify T lymphocyte subsets in the BAL fluid of untreated patients with sarcoidosis (n = 40)--either without (group A, n = 12) or with (group B, n = 28) radiological evidence of pulmonary involvement--and in 22 normal subjects. The level of different beta chemokines was estimated by enzyme linked immunosorbent assay (ELISA). A high percentage of CD3+ cells, CD4+ cells expressing HLA-DR antigen, and a high CD4/CD8 ratio were detected in the BAL fluid of patients compared with normal subjec...Continue Reading

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