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M9550246.TXT
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1995-03-04
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Document 0246
DOCN M9550246
TI Increased levels of soluble CD8 and CD4 in patients with infectious
mononucleosis.
DT 9505
AU Yoneyama A; Nakahara K; Higashihara M; Kurokawa K; First Department of
Internal Medicine, Faculty of Medicine,; University of Tokyo, Japan.
SO Br J Haematol. 1995 Jan;89(1):47-54. Unique Identifier : AIDSLINE
MED/95134680
AB Plasma levels of soluble CD8 (sCD8) and soluble CD4 (sCD4) in 44
patients with infectious mononucleosis (IM) were studied. A marked
increase in sCD8 (22366 +/- 2702 U/ml; control: 219 +/- 10 U/ml; P <
0.0001) and significant increase in sCD4 (19.3 +/- 0.9; control: 8.1 +/-
0.2, P < 0.0001) strongly suggest activation of both CD8+ and CD4+
lymphocytes, which is important in restraining Epstein-Barr
virus-infected B lymphocytes. Levels of sCD8 strongly correlated with
the percentage and the absolute number of both CD8+ and CD8(+)-HLA-DR+
lymphocytes. In addition, we showed increased release of sCD8 from
lymphocytes in vitro and increased ratio between plasma sCD8 and the
number of CD8+ lymphocytes in blood, indicating that elevation of plasma
sCD8 is due to expansion of CD8+ subset as well as increased sCD8
release from each CD8+ cell. Increased sCD4 release from CD4+
lymphocytes, the number of which is not increased in the blood during
IM, was also seen. Patients with more severe fever had higher levels of
sCD8 and sCD4. During convalescence sCD8 and sCD4 levels showed
progressive decrease; however, even at 60-119 d after onset the levels
of sCD8 and sCD4 remained higher than normal, suggesting prolonged
lymphocyte activation. These results suggest that sCD8 and sCD4 are
useful in monitoring immune activation during IM.
DE Acute Disease Adolescence Adult Antigens, CD4/*BLOOD Antigens,
CD8/*BLOOD Cells, Cultured Child CD4-Positive
T-Lymphocytes/IMMUNOLOGY CD8-Positive T-Lymphocytes/IMMUNOLOGY
Fluorescent Antibody Technique Human HLA-DR Antigens/BLOOD Infectious
Mononucleosis/*IMMUNOLOGY Longitudinal Studies Lymphocyte Count
Lymphocyte Transformation/IMMUNOLOGY Solubility JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).