CD43 and CD5 antibodies define four normal and neoplastic B-cell subsets: a three-color flow cytometric study.

Important note: Information in this article was accurate in 1996. The state of the art may have changed since the publication date.

CD43 and CD5 antibodies define four normal and neoplastic B-cell subsets: a three-color flow cytometric study.

Cytometry. 1995 Sep 15;22(3):223-31. Unique Identifier : AIDSLINE MED/96106606
Lynch EF; Jones PA; Swerdlow SH; Department of Pathology, University of Pittsburgh School of; Medicine, Pennsylvania, USA.

Abstract: CD43 antibodies are best known for identifying normal and neoplastic T cells and a subset of neoplastic B cells in paraffin sections. The frequency of nonneoplastic CD43 + B cells in different reactive settings, the proportion of B-cell neoplasms with small CD43+ populations, and the relationship of CD43+ B cells was therefore studied in 138 specimens using three-color cytometric analysis. CD43 and CD5 defined four normal B-cell subsets (CD43 + CD5 +, CD43 + CD5-, CD43 - CD5+, and CD43-CD5-). A significantly greater proportion of CD43+ B cells was found in cord blood and putative HIV+ blood samples than in normal control bloods. B-cell neoplasms derived from each of these four B-cell subsets were identified, with CD43+ /CD5+ and CD43-/CD5- neoplasms being most common. The predominant B-cell population coexpressed CD43 alone in 2/39 neoplasms and CD5 alone in four. A minority of cases showed heterogeneous CD43 expression. The B cells in two of three posttransplant lymphoproliferative disorders coexpressed CD43. B cells showed weaker CD43 staining than did T-cells (relative fluorescence 0.38 +/- 0.29). These findings support the concept that CD43 expression by neoplastic B cells is not an aberrant finding. CD43 expression on normal and neoplastic B cells is independent of CD5 expression even though CD43 and CD5 are frequently coexpressed. CD43 expression by B cells sometimes might be underestimated in paraffin sections because it is much weaker than on T cells.(ABSTRACT TRUNCATED AT 250 WORDS)

Keywords: Adult Ammonium Chloride Animal Antibodies/*IMMUNOLOGY Antigens, CD19/IMMUNOLOGY Antigens, CD5/*IMMUNOLOGY B-Lymphocyte Subsets/*IMMUNOLOGY *Flow Cytometry Human Lymphoma, B-Cell/*IMMUNOLOGY Reagent Kits, Diagnostic Sialoglycoproteins/*IMMUNOLOGY Support, Non-U.S. Gov't JOURNAL ARTICLE
960530
M9651006

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