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Autoimmune hemolytic anemia Masami Bessho 1 1Saitama Medical University, Faculty of Medicine, Department of Hematology Keyword: Hemolytic anemia , antiglobulin test , cytokine abnormality pp.1206-1211
Published Date 2011/10/30
DOI https://doi.org/10.11477/mf.1542102804
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Warm antibody autoimmune hemolytic anemia (AIHA), a type of AIHA, is induced by the antoantibodies which possess relatively high affinity for Rh polypeptide or Band 3 protein of the red blood cell (RBC) membrane. The autoantibodies are predominantly IgG globulins, and autoantibody-coated RBCs are destructed by sequestration and phagocytosis in the spleen (extravascular hemolysis). Recent studies on animal and human AIHA explain the mechanisms that produce a loss of immunologic torelance against erythrocyte self antigen. The diagnosis of AIHA depends on the demonstration of immunoglobulin and/or complement proteins bound to RBCs by the antiglobulin test (DAT) or Direct Coombs Test. A subset of patients have the usual features of AIHA but a negative DAT. Small quantities of cell-bound IgG molecules are identified in these DAT-negative AIHA patients. AIHA responds well to glucocorticoids, but the course is capricious, characterized by relapses and remissions.


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電子版ISSN 1882-1367 印刷版ISSN 0485-1420 医学書院

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