首页|吸收IgG抗-AB抗体后IgG抗-A/抗-B抗体效价预测ABO-胎儿新生儿溶血病的价值

吸收IgG抗-AB抗体后IgG抗-A/抗-B抗体效价预测ABO-胎儿新生儿溶血病的价值

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目的:分析吸收IgG抗-AB抗体后O型孕妇血浆中IgG抗-A/抗-B抗体效价对ABO-胎儿新生儿溶血病(ABO-HDFN)发生的预判价值.方法:选取2020年2月-2020年9月北京市血液中心母亲血型为O型的新生儿高胆红素血症样本235例,采用微柱凝胶卡检测母亲血浆IgG抗-AB抗体吸收前后IgG抗-A/抗-B抗体效价,并统计ABO-HDFN的发生情况.分析比较IgG抗-AB抗体吸收前后IgG抗-A/B抗体效价变化及不同效价下ABO-HDFN的发生率,并采用受试者工作特征(ROC)曲线分析吸收IgG抗-AB抗体后O型孕妇血浆中IgG抗-A/抗-B抗体效价水平对ABO-HDFN的诊断效能.结果:本研究选取的235例母亲血型为O型的新生儿高胆红素血症样本中,新生儿血型为A型的有127例,其中38例确诊为ABO-HDFN;血型为B型的有108例,其中31例确诊为ABO-HDFN.235例样本吸收IgG抗-AB抗体前后,IgG抗-A/抗-B抗体效价差异显著(P<0.05).在69例ABO-HDFN确诊病例中,无论是否吸收IgG抗-AB抗体,ABO-HDFN的发生率都会随着IgG抗-A/抗-B抗体效价的升高而升高,但未吸收IgG抗-AB前,抗-A/抗-B抗体效价均≥1:512,而吸收后抗-A/抗-B抗体效价则出现明显降低,整体下降了3个滴度,均≤1∶512.ROC曲线分析显示,吸收IgG抗-AB抗体前后IgG抗-A/抗-B抗体效价均可作为诊断ABO-HDFN的效能指标;但吸收IgG抗-AB抗体前后IgG抗-A/抗-B抗体效价诊断ABO-HDFN的效能存在一定差异(P<0.05),吸收后的AUC值均大于吸收前,表明吸收IgG抗-AB抗体后IgG抗-A/抗-B抗体效价诊断ABO-HD-FN的效能优于吸收前(P<0.05).结论:O型产妇血浆吸收IgG抗-AB抗体后测得的IgG抗-A/抗-B抗体效价越高,ABO-HDFN发生率越高;且吸收IgG抗-AB抗体后IgG抗-A/抗-B抗体效价诊断ABO-HDFN效能高于吸收前的诊断效能.
The Value of IgG Anti-A/Anti-B Antibody Titers after Absorption of IgG Anti-AB Antibodies in Predicting ABO Fetal Neonatal Hemolytic Disease
Objective:To analyze the diagnostic value of IgG anti-A/anti-B antibody titer in the serum of type O pregnant women after absorption of IgG anti-AB antibody for ABO hemolytic disease of fetus and newborn (ABO-HDFN).Methods:From February 2020 to September 2020,235 samples of neonatal hemolytic disease whose mother's blood type O from Beijing Blood Center were selected.The titer of IgG anti-A/anti-B antibody in mother's serum before and after absorption of IgG anti-AB antibody was detected by microcolumn gel card,and the incidence of ABO-HDFN was statistically analyzed.The titer level of IgG anti-A/anti-B antibody and the incidence of ABO-HDFN were compared before and after the absorption of IgG anti-AB antibody,and the diagnostic efficacy of the titer level of IgG anti-A/anti-B antibody in the serum of type O pregnant women after the absorption of IgG anti-A and B antibodies on the incidence of ABO-HDFN was analyzed using the receiver's work characteristic (ROC)curve.Results:Of the 235 neonatal hyperbilirubinemia samples with maternal blood type O,127 were blood type A,38 of which were diagnosed as ABO-HDFN;108 were blood type B,of which 31 were diagnosed as ABO-HDFN.Before and after absorption of IgG anti-AB antibody,there was a significant difference in the titer of IgG anti-A/anti-B antibody (P<0.05).Among the 69 confirmed cases,the incidence of ABO-HDFN increased with the increase of IgG anti-A/anti-B antibody with or without the IgG anti-AB antibody,but the anti-A/anti-B antibody titer≥1:512 before the absorption of IgG anti-AB antibody,while the anti-A/anti-B antibody titer decreased significantly,decreasing by three titers,all≤1∶512.The ROC curve shows that the titers of IgG anti-A/anti-B antibodies before and after absorption of IgG anti-AB antibodies can be used as the efficacy indicators for the diagnosis of ABO-HDFN.However,there was a significant difference in the potency of IgG anti-A/anti-B antibody titer for the diagnosis of ABO-HDFN before and after the absorption of IgG anti-AB antibody (P<0.05).The AUC values were greater than before absorption,indicating that the IgG anti-A/anti-B antibody after the absorption of IgG anti-AB antibody was better than before absorption (P<0.05).Conclusion:The higher the titer of IgG anti-A/anti-B antibody measured after absorbing IgG anti-AB antibody,the higher the incidence of ABO-HDFN. In addition,the efficacy of IgG anti-A/anti-B antibody titer to diagnose ABO-HDFN after absorption of IgG anti-AB antibody is higher than that before absorption.

ABO hemolytic disease of fetus and newbornHyperbilirubinemia of newbornIgG anti-AB antibodyIgG anti-A/anti-B antibody titer

程晨、张怡、陈怡静、骆群、卓海龙

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解放军总医院第五医学中心输血医学科,北京 100071

ABO-胎儿新生儿溶血病 新生儿高胆红素血症 IgG抗-AB抗体 IgG抗-A/抗-B抗体效价

2024

中国实验血液学杂志
中国病理生理学会

中国实验血液学杂志

CSTPCD北大核心
影响因子:0.988
ISSN:1009-2137
年,卷(期):2024.32(6)