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Proliferating cells in histiocytic necrotizing lymphadenitis
K Ohshima1, M Kikuchi, Y Sumiyoshi
1First Department of Pathology, School of Medicine, Fukuoka University, Japan.
Virchows Archiv. B, Cell Pathology Including Molecular Pathology
|January 1, 1991
Summary
Histiocytic necrotizing lymphadenitis (HNL) involves proliferating CD8-positive T-cells, with CD4 and CD15 cells also present. The study highlights CD8 T-cell proliferation as a key feature in HNL development.
Area of Science:
- Immunology
- Pathology
Background:
- Histiocytic necrotizing lymphadenitis (HNL) is an inflammatory condition affecting lymph nodes.
- Understanding the cellular phenotypes involved in HNL pathogenesis is crucial.
Purpose of the Study:
- To investigate the phenotypes of proliferating cells within affected lymph nodes in HNL.
- To determine the role of T-cell subsets (CD4, CD8) and monocytes (CD15) in HNL.
Main Methods:
- Utilized a double-staining immunohistochemical method.
- Applied Ki-67 as a proliferation marker.
- Employed monoclonal antibodies for CD4, CD8, and CD15 cell phenotyping.
Main Results:
- Proliferating cells (Ki-67-positive) in HNL were predominantly CD8-positive (suppressor/cytotoxic T-cells).
- A smaller proportion of proliferating cells were CD4-positive (helper/inducer T-cells) or CD15-positive (monocytes).
- CD8-positive cell percentages increased over 6 weeks, with a sustained ratio to proliferating cells.
Conclusions:
- The primary cellular event in HNL appears to be the proliferation of CD8-positive T-cells.
- Accumulation of CD4-positive T-cells and CD15-positive monocytes also contributes to the pathology of HNL.