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在中国人中",亚洲型"DEL与弱D表型的频率
1Blood Grouping Reference Laboratory, Chengdu Blood Center, Chengdu, China.
概括
这项研究确定了具有RHD*DEL1等位基因的"亚洲类型"DEL个体,揭示了弱RHD表型. 建议使用多种抗D试剂的血清学策略来准确检测这些RhD变体.
科学领域:
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
- 血液储存银行 血液储存银行
背景情况:
- 在东亚常见的DEL个体通常携带RHD*DEL1等位基因,定义"亚洲类型"的DEL.
- 关于"亚洲型"DEL个体中弱RhD表型的分子基础上存在有限的数据.
- 了解"亚洲型"DEL的遗传和血清学特征对于输血医学至关重要.
研究的目的:
- 为了调查"亚洲型"DEL个体的遗传背景.
- 分析"亚洲型"DEL个体具有弱RhD表型的血清学特征.
- 阐明东亚人口中RhD变异的分子基础.
主要方法:
- 通过微板类型和微柱凝聚合,对一百万个献血样本的RhD特征.
- 通过直接抗球蛋白试验,间接抗球蛋白试验和五种抗D试剂确认RhD变异.
- 分子分析,包括直接基因组DNA测序,RHD复合性和RHD*DEL1载体的吸附-脱离试验.
主要成果:
- 确定了21个RhD变异样本,所有样本都携带RHD*DEL1等位基因 ("亚洲类型"DEL).
- 9个样本是RHD+/RHD+ (同卵性),12个样本是RHD+/RHD- (半卵性).
- 观察到某些抗D试剂的弱RhD表达,特别是微柱凝卡中的IgG抗D.
结论:
- RHD*DEL1等位基因与"亚洲型"DEL个体的弱RhD表型有关.
- 使用多种抗D试剂的血清学策略可以帮助检测这些RhD变体.
- 需要进一步的研究来评估"亚洲型"DEL的抗原性和输血反应潜力的临床意义.
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