青岛地区RhD阴性及D变异型无偿献血者RHD基因的多态性研究  被引量:9

Polymorphism of RHD gene among RhD negative and D variant blood donors from Qingdao region

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作  者:胡彬 冯智慧 朱于莉 

机构地区:[1]山东省青岛市中心血站,266071

出  处:《中华医学遗传学杂志》2017年第6期897-900,共4页Chinese Journal of Medical Genetics

基  金:青岛市市南区科技发展计划项目(2015-6-021-YY)

摘  要:目的探讨青岛地区RhD阴性及D变异型无偿献血者的分子机制与RHD基因的多态性。方法对220例经血清学试验确证为阴性及5例D变异型的无偿献血者,采用PCR—SSP方法检测RHD基因的第1-10外显子,对全部或部分外显子扩增阳性的样本进行测序分析。结果在220例确证试验阴性的样本中,RHD基因第1-10外显子检测全部为阴性的样本有166例(75.45%),部分或全部存在的标本有54例(24.55%)。共获得8种等位基因型,分别为RHDl227G-A28例(12.73%)、RHD-CE-(2—9)-D19例(8.64%)、RHD-CE-(3-7)-D1例(O.45%)、RHD3G〉A1例(0.45%)、RHD 711delC 2例(0.91%),RHD1013T〉C1例(0.45%),RHD1227A/G1例(O.45%)。RHD基因第1-10外显子未发现突变者1例。5例D变异的个体共有2种等位基因型,分别为RHD845G:〉A(4例)和RHD697G〉A(1例)。结论青岛地区RhD阴性无偿献血者的RHD基因以整体缺失为主,并存在丰富的遗传学多态性。Objective To study the molecular mechanism and polymorphism of D gene of RhD negative and D variants among voluntary blood donors from Qingdao region. Methods For 220 D-negative phenotype cases and 5 D variant cases confirmed by serological test, exons 1 to 10 of the RHD gene were detected by a PCR-SSP method. The samples which contain all or part of the exons were sequenced. Results Among the 220 cases, 166 (75.45%) had complete absence of the RHD gene, while 54 (24. 55%) had retained some or all of the 10 exons. Eight genotypes were identified, which included RHD 1227G〉A in 28 cases (12.73%), RHD-CE- (2-9) -D in 19 cases (8.64%), RHD-CE- (3-7)-D in 1 case (0.45%), RHD 3G〉A in 1 case (0.45%), RHD 711delC in 2 cases (0.91%), RHD 845G-A in 1 case (0.45%), RHD 1013T〉C in 1 case (0.45%), and RHD 1227A/G in 1 case (0.45%). No mutation was found in air of the 10 exons. Two alleles were identified in the 5 cases of D variants, which included RHD 845G〉A (4 eases) and RHD 697G〉 A (1 case). Conclusion Absence of the whole RHD gene is common among RhD negative blood donors from Qingdao region, and there are rich genetic polymorphisms for this locus.

关 键 词:RHD阴性 D变异型 RHD基因 青岛地区 

分 类 号:R394[医药卫生—医学遗传学]

 

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