251. Expression of intercellular adhesion molecule-1 (ICAM-1) by reactive mesothelial cells in pleural effusions.
- Author
-
Mutti L, Piacenza A, Valenti V, Castagneto B, and Betta PG
- Subjects
- Antibodies, Monoclonal immunology, Carcinoma metabolism, Carcinoma pathology, Cell Adhesion Molecules immunology, Cell Movement, Epithelium metabolism, Epithelium pathology, Gene Expression, Humans, Intercellular Adhesion Molecule-1, Leukocytes, Lymphocyte Function-Associated Antigen-1 metabolism, Neoplasm Proteins metabolism, Pleural Effusion pathology, Cell Adhesion Molecules biosynthesis, Pleural Effusion metabolism
- Abstract
Reactive mesothelial cells in serous effusions have been assessed for their capacity to express intercellular adhesion molecule-1 (ICAM-1), when pleural cavities are involved in inflammatory and immune reactions. Cytospin smears prepared from 10 benign and 10 malignant effusion specimens were used in an immunocytochemical procedure. Mesothelial cells were positively immunolabeled by a monoclonal antibody to human ICAM-1, whereas lymphocytes clustered around them reacted positively with a monoclonal antibody to human Lymphocyte Function-associated antigen-1 alpha chain (LFA-1-alpha). The ICAM-1/LFA-1 interaction enables mesothelial cells to regulate leukocyte transmigration to and accumulation in serous cavities and therefore they are actively involved in the development of serous effusions.
- Published
- 1993