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ID 31523
JaLCDOI
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Author
Sunada, Mitsutoshi
Suzuki, Shinya
Ota, Zensuke
Abstract

We examined the activity of peripheral blood monocytes in patients with autoimmune hemolytic anemia (AIHA) using an in vitro assay of monocyte-macrophage interaction with erythrocytes and an antibody-dependent cell-mediated cytotoxicity (ADCC) assay. The monocytes of AIHA patients in the hemolyzing period phagocytized autologous sensitized red cells and anti-D coated red cells more avidly than normal control monocytes. There was no significant relationship between phagocytic activity and ADCC activity. The activated monocytes phagocytized autologous sensitized red cells, but had no ADCC activity in a short time 51Cr release assay. Phagocytic activity of the patients' monocytes against autologous erythrocytes rapidly decreased after treatment with prednisolone even though the red cell sensitization with antibody remained almost the same as during the hemolyzing period. We postulated that the activation of monocytes in AIHA was due to the "arming" effect of anti-erythrocyte antibody, but we think that other mechanisms may also be involved in the activation of monocytes.

Keywords
autoimmune hemolytic anemia
phagocytosis
antibody-dependent cell mediated cytotoxicity
monocytes
Amo Type
Article
Publication Title
Acta Medica Okayama
Published Date
1985-10
Volume
volume39
Issue
issue5
Publisher
Okayama University Medical School
Start Page
375
End Page
384
ISSN
0386-300X
NCID
AA00508441
Content Type
Journal Article
language
English
File Version
publisher
Refereed
True
PubMed ID
Web of Science KeyUT