在巴西东南部的非典型 ABO 类型的基础上对 ABO 亚组进行综合的血清学和分子研究
Carine Prisco Arnoni1, Tatiane Aparecida Paula de Vendrame1, Nayara Morais Silva1
1Colsan-Associação Beneficente de Coleta de Sangue, São Paulo, São Paulo, Brazil.
Vox sanguinis
|February 22, 2026
概括
尽管不常见,但ABO亚组可能会导致血型异常. 这项研究确定了巴西东南部普遍存在的ABO亚组,揭示了影响血型准确性和供体查的特定变异.
科学领域:
- 输血医学 输血医学
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
背景情况:
- ABO亚组可以导致 ABO 血型异常,反应性弱,以及意外的抗体模式.
- 识别流行的ABO亚组对于准确的输血实践至关重要.
研究的目的:
- 为了确定巴西东南部最常见的ABO亚组.
- 描述这些子组的血清学概况.
- 为了评估它们对 ABO 血型定型的影响.
主要方法:
- 来自巴西圣保罗州的供体样本的分析.
- 根据降低/负抗A1 莱克活性或非典型的 ABO 类型选择的样本.
- 使用PCR-RFLP和桑格测序进行分子表征.
主要成果:
- ABO*A2.01是第一组 (10.2%的A型捐赠者) 中的主要等位基因.
- 在第二组中,ABO*AW.09 (33%),ABO*AW.31 (11%) 和ABO*AEL.01 (11%) 是常见的变异性等位基因,导致ABO误类.
- 鉴定出B子组在内突1中的分子变化.
结论:
- 在巴西人群中存在临床意义上的ABO亚组.
- 这些子组直接影响血液型的准确性.
- 在供体查,血清学测试和分子分析方面保持警是必不可少的.
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