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M9650461.TXT
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1996-03-09
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Document 0461
DOCN M9650461
TI CD43 and CD5 antibodies define four normal and neoplastic B-cell
subsets: a three-color flow cytometric study.
DT 9605
AU Lynch EF; Jones PA; Swerdlow SH; Department of Pathology, University of
Pittsburgh School of; Medicine, Pennsylvania, USA.
SO Cytometry. 1995 Sep 15;22(3):223-31. Unique Identifier : AIDSLINE
MED/96106606
AB 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)
DE 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
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).