广州地区无偿献血者抗-Mur筛查及Mur抗原基因型检测

摘要

Objective To investigate the frequency of anti-Mur and Mur antigen among blood donors in Guangzhou to provide evidence for guiding clinical transfusion and prenatal screening. Methods DG Gel Coombs cards were used to screen active anti-Mur at 37℃ from 2725 blood donors. Multiplex ligation-dependent probe amplification (MLPA) was used to genotype Mur antigen from 91 blood donors, and human anti-Mur serum was used to verify the phenotypes deduced from the geno-types. Results The frequency of anti-Mur and genotyped Mur antigen was 0.04% (1/2725) and 6.59% (6/91), respectively, and the phenotyping results were consistent with the genotyping results. Conclusion The blood donors in Guangzhou show a low frequency of anti-Mur and a relatively high frequency of Mur antigen. Genotyping using MLPA allows Mur antigen genotyp-ing when commercial anti-Mur is not available.%目的 了解广州地区无偿献血者中抗-Mur及Mur抗原基因型的频率,为指导临床输血及产前抗体监测提供依据.方法 用微柱凝胶卡方法筛查2725名献血者血清中37℃有活性的抗-Mur;采用多重连接依赖的探针扩增技术(MLPA)对91名献血者的Mur抗原基因型进行检测,然后用人源抗-Mur血清检测Mur抗原基因型阳性样本的红细胞表型.结果 无偿献血者血清中抗-Mur频率为0.04％(1/2725),Mur抗原基因型阳性频率为6.59％(6/91),经血型血清学方法验证基因型与表型符合率为100％(6/6).结论 广州地区无偿献血者中抗-Mur频率较低,而Mur抗原阳性则相对较常见；通过MLPA方法检测Mur抗原基因型可以准确推断其表型,解决了因缺乏商品化抗-Mur试剂导致Mur抗原鉴定难以开展的难题.