孕妇外周血胎儿细胞的富集技术及其在产前诊断中的应用(2)
作者:佚名; 更新时间:2014-12-13
作者又用同样的方法诊断出1例21三体妊娠。Elias等[23]用CD71 GPA单克隆抗体磁场富集胎儿NRBC,用X、Y、18和21号染色体专一性探针作FISH,共研究了69名孕妇外周血,8例非整倍体妊娠只有1例未被检出,而且无1例假阳性。有人用同样方法诊断出13三体综合征[8]。


  从孕妇外周血分离胎儿细胞进行产前诊断已取得了重要进展,但其临床应用中的问题仍需要进一步的研究,如富集胎儿细胞的最佳时间,影响因素,建立特异而敏感的基因、染色体分析方法,克服假阴性、假阳性问题等。只有解决好这些问题,这种方法才能成为理想的非创伤性产前诊断方法。

 




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