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Immunohistochemical studies on human myocardial mast cells
K Rydzyński1, M Zabel, J Surdyk
1Department of Pathomorphology, Nofer Institute of Occupational Medicine, Lódź, Poland.
Cellular and Molecular Biology
|January 1, 1990
Summary
Human heart mast cells (MCs) express common leukocyte antigen, vimentin, and histamine. Their immunoreactivity differs from neoplastic mast cells, suggesting heterogeneity in human MCs.
Area of Science:
- Immunology
- Cell Biology
- Histology
Background:
- Mast cells (MCs) are immune cells found in various tissues.
- Human heart mast cells' specific characteristics are not fully understood.
- Previous studies have focused on mast cells in different pathological conditions.
Purpose of the Study:
- To investigate the immunoreactivity profile of resting human heart mast cells.
- To compare heart mast cells with neoplastic and reactive mast cells.
- To explore the heterogeneity of human mast cells.
Main Methods:
- Immunohistochemical analysis using a panel of antisera.
- Study of mast cells from right atrial auricles and papillary muscles of patients undergoing open heart surgery.
- Assessment of staining patterns for various cellular antigens.
Main Results:
- All heart mast cells reacted positively to antisera against leukocyte common antigen, vimentin, and histamine.
- Some mast cells showed reactivity to lysozyme, alpha 1-antitrypsin, alpha 1-antichymotrypsin, and S-100 protein.
- No reaction was observed with antisera against epithelial, tumor, neuronal, and endocrine cell antigens.
Conclusions:
- Human heart mast cells exhibit a distinct immunoreactivity profile.
- This profile differs from that of neoplastic and reactive mast cells.
- Findings suggest heterogeneity among human mast cells based on anatomical site and pathological state.