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母亲血浆中胎儿RhCcEe基因的检测

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摘要 目的探讨用实时荧光定量PCR(FQ-PCR)检测孕妇血浆中胎儿RhCcEe基因的可行性。方法用QIAamp DNA Kit抽提孕妇血浆DNA,应用9个(D3S1358、VWA、FGA、D5S818、D13S317、D7S820、D8S1179、D21S11、D18S51)具有高度多态性的短串联重复序列(STR)位点,对孕妇血浆样本中DNA进行STR等位基因扩增。同时检测孕妇丈夫外周血来源DNA,通过胎儿父源性等位基因在孕妇血浆中的检出确认胎儿DNA的存在。通过FQ-PCR法检测34例孕妇血浆中胎儿RhCcEe基因,并对出生后婴儿脐带血进行RhCcEe血清学表型分析,回顾性评价胎儿基因分型结果的准确性。结果在10例母亲表型为ee纯合子的样本、11例母亲表型为CC纯合子的样本、5例母亲表型为EE纯合子的样本及8例母亲表型为cc纯合子的样本中均分别检测到了母亲所缺少的E、c、e、C基因,这与出生后婴儿外周血血清学分型相吻合。结论FQ-PCR法是一种灵敏度和准确性高,且特异性强的非创伤性产前诊断胎儿RhCcEe基因型的方法,当母亲为纯合子时,血将中胎儿RhCcEe基因分型具有临床意义,可用于新生儿溶血病的预防和诊断。
出处 《检验医学》 CAS 北大核心 2009年第4期302-305,共4页 Laboratory Medicine
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参考文献9

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