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Subclasses of warm autoantibody Ig Gin patients with autoim m unehemolytic anemia and their clinicalim plications
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作者 李孜 邵宗宏 +4 位作者 徐艳 沈琳 陈桂彬 张益枝 储榆林 《Chinese Medical Journal》 SCIE CAS CSCD 1999年第9期37-40,共4页
Objective To explore the mechanism of autoimmune hemolysis and establish a more sensitive test for autoimmune hemolytic anemia (AIHA) Methods IgG subclasses were tested in 40 patients with idiopathic or secondary A... Objective To explore the mechanism of autoimmune hemolysis and establish a more sensitive test for autoimmune hemolytic anemia (AIHA) Methods IgG subclasses were tested in 40 patients with idiopathic or secondary AIHA by Coombs test with monoclonal antibodies Hb, TBil, RC and FHb, as hemolytic parameters, were used to analyze the clinical implications of subclasses of AIHA warm autoantibody IgG Results In most patients IgG incomplete warm autoantibody was IgG1(27 patients), but IgG3(20 patients), rarely IgG2(14 patients) and IgG4(9 patients) also occurred Three groups were analyzed: Group A included 20 patients with IgG3; Group B included 14 patients with IgG1 but without IgG3; Group C included 6 patients without IgG1 and IgG3 There were significant differences ( P <0 01) between groups in Hb, TBil, RC and FHb Moreover, we also found that the sensitivity of Coombs test with polyclonal antiserums was 90 0%, while that of Coombs test with monoclonal antibodies was 97 5% The effect of treatment was worst in patients with positive IgG3 autoantibody, whose hemolysis recurred frequently Conclusion IgG3 autoantibody was the most effective in bringing about red cell destruction, IgG1 autoantibody was less effective, IgG2 even less, whereas IgG4 autoantibody was shown to hardly affect red cell survival Coombs test with monoclonal antibodies was more sensitive than that with polyclonal antiserums Patients’ respondence to treatment correlated with the type of IgG subclasses 展开更多
关键词 autoimmune hemolytic anemia · autoantibody subclass
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