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M9480116.TXT
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1994-08-09
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Document 0116
DOCN M9480116
TI Characterization of adherent T cells to human endothelial cells in
patients with HTLV-I-associated myelopathy.
DT 9410
AU Ichinose K; Nakamura T; Nishiura Y; Nagasato K; Ohishi K; Watanabe H;
Fujita A; Kurouji K; Tsujihata M; Nagataki S; First Department of
Internal Medicine, Nagasaki University School; of Medicine, Japan.
SO J Neurol Sci. 1994 Apr;122(2):204-9. Unique Identifier : AIDSLINE
MED/94293035
AB To clarify the phenomenon of increased adherence of T cells to
endothelial cells (EC) in patients with HTLV-I-associated myelopathy
(HAM), we determined the surface markers and expression of lymphocyte
function antigen-1 (LFA-1) in T cells adherent or nonadherent to EC. The
percentage of activated or HLA-DR+ T cells and the expression of LFA-1
in the adherent cell population were significantly higher than those in
the nonadherent cell population. Moreover, the CD4 to CD8 ratio of the
HLA-DR+ cells in the EC-adherent T cells was significantly higher than
that in the nonadherent cells. Collectively, these results indicate that
increased adherence of T cells to EC in HAM patients is based on the
increase of activated T cells with high density LFA-1 expression in the
peripheral blood. Moreover, CD4+ HLA-DR+ cells exhibited more adhesive
activity to EC than CD8+ HLA-DR+ cells, suggesting that activated CD4+
cells, rather than activated CD8+ cells, may be important as the first
trigger for T cell-infiltration to the central nervous system in the
immunopathogenesis of HAM.
DE Adult Aged Antigens, CD/ANALYSIS Antigens, Differentiation,
T-Lymphocyte/ANALYSIS Cell Adhesion Cells, Cultured Endothelium,
Vascular/CYTOLOGY/*METABOLISM Female Flow Cytometry Human HLA-DR
Antigens/ANALYSIS Male Middle Age Paraparesis, Tropical
Spastic/BLOOD/*IMMUNOLOGY Support, Non-U.S. Gov't T-Lymphocyte
Subsets/CHEMISTRY/*METABOLISM Umbilical Veins JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).