Immunohistochemical determination of CD23 expression in Hodgkin's disease using paraffin sections

D C Rowlands1, T T Hansel, J Crocker

  • 1Department of Histopathology, East Birmingham Hospital, U.K.

Insights

CD23, a leukocyte antigen, is expressed in Hodgkin's disease, B-cell, and T-cell lymphomas. This finding suggests CD23's potential role in the characteristic cellular infiltrate of Hodgkin's lymphoma.

Area of Science:

  • Immunology
  • Oncology
  • Cell Biology

Background:

  • Leukocyte antigen CD23 plays roles in B-cell development, acting as an IgE receptor and lymphocyte growth factor.
  • Understanding CD23 expression is crucial for diagnosing and understanding lymphoid malignancies.

Purpose of the Study:

  • To investigate the expression patterns of CD23 in various lymphoid tissues and tumors.
  • To determine the potential involvement of CD23 in the pathogenesis of Hodgkin's lymphoma.

Main Methods:

  • Immunohistological analysis of paraffin-embedded lymphoid tissue sections.
  • Utilized the monoclonal antibody BU38 for CD23 detection.
  • Analyzed cases of Hodgkin's disease, reactive lymph nodes, and non-Hodgkin's lymphomas (B-cell and T-cell).

Main Results:

  • CD23 was detected on follicular dendritic cells and some lymphocytes in reactive lymph nodes.
  • Thirteen out of 15 Hodgkin's disease cases exhibited CD23 expression in neoplastic cells and the surrounding infiltrate.
  • CD23 was also found in a subset of B-cell (4/8) and T-cell (1/7) non-Hodgkin's lymphomas.

Conclusions:

  • CD23 expression is a notable feature in Hodgkin's disease, extending beyond normal B-cell populations.
  • The presence of CD23 in both neoplastic and reactive cells suggests its potential contribution to the characteristic inflammatory microenvironment of Hodgkin's lymphoma.
  • CD23 warrants further investigation for its role in lymphoid neoplasms, particularly Hodgkin's lymphoma.

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