Expression of an adhesion molecule and homing in B-cell chronic lymphocytic leukaemia: I. Application of the HEV-binding assay to a clinical series.
High endothelial venule (HEV)-binding of peripheral blood mononuclear cells (PBMCs) from 43 patients with B-cell chronic lymphocytic leukaemia (B-CLL) was investigated with a HEV-binding in vitro assay. Immunophenotyping of HEV-adherent PBMCs proved that most of them belonged to the B-cell proliferation. B-CLL cells stringently expressed CD44 molecules (Hermes-1, -3 and H90). The patients were subgrouped according to Binet's classification, as well as according to the organ manifestations, i.e. patients with B-cell monoclonal lymphocytosis of undetermined significance (B-MLUS) and patients with lymphocytosis (LY), lymph node enlargement (LN) and splenomegaly (SM). The HEV-binding activity of the cells was the highest in Binet stage A patients and in patients with B-MLUS (p < 0.05 in B-MLUS versus B-CLL LY, LN, SM). Based on these findings it is suggested that B-CLL patients show not only a clinical and immunophenotypical heterogeneity, but a diverse function of adhesion molecules.
Csanaky
G
G
Department of Pathology, University Medical School of Pécs, Hungary.
Kalász
V
V
Kelényi
G
G
Losonczy
H
H
Balikó
Z
Z
Tóth
A
A
D000328:Adult; D000368:Aged; D015815:Cell Adhesion Molecules / Q000032:analysis / Q000502:physiology; D005260:Female; D006801:Humans; D016130:Immunophenotyping; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000276:immunology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D016201:Receptors, Lymphocyte Homing / Q000032:analysis*
D015815:Cell Adhesion Molecules; D016201:Receptors, Lymphocyte Homing