母儿中HLA-G 14bp插入/缺失多态性在早发型、晚发型重度子痫前期和正常妊娠中分布的差异

目的：探讨早发型、晚发型重度子痫前期和正常妊娠中母儿HLA-G 14bp插入/缺失多态性分布的差异。方法：（1）分析早发型重度子痫前期31例,晚发型重度子痫前期25例,正常妊娠组30例;（2）采用聚合酶链反应技术（PCR）,对3组母儿进行HLA-G基因第8外显子14bp插入/缺失多态性的等位基因分型,分别比较3组母亲之间和3组新生儿之间等位基因及基因型的频率分布,通过母/儿基因型配伍,比较3组间基因型配伍频率分布的差异。结果：（1）早发型重度子痫前期组母/儿基因型配伍为母缺失纯合子（-/-14bp）/儿杂合子（＋/-14bp）出现的几率要高于晚发型组（χ2=5.034,P=0.025）,其和正常妊娠组相比有升高的趋势（χ2=3.685,P=0.055）;早发型重度子痫前期组母/儿基因型配伍为母杂合子（＋/-14bp）/儿缺失纯合子（-/-14bp）出现的几率要低于正常妊娠组（χ2=3.985,P=0.046）;（2）正常妊娠新生儿组HLA-G 14bp缺失多态性等位基因频率分布高于早发型组（χ2=6.270,P=0.012）,缺失纯合子（-/-14bp）基因型频率分布高于早发型组（χ2=6.139,P=0.013）。结论：（1）早发型重度子痫组母/儿HLA-G 14bp插入/缺失多态性基因型配伍的不同可能引起母儿之间免疫耐受异常,导致了早发型重度子痫前期的发生;（2）胎儿HLA-G 14bp缺失多态性可能降低了早发型重度子痫前期的发生。

The distribution difference of HLA-G 14bp insertion/deletion polymorphism in maternal-child between early(late)onset of severe pre-eclampsia and normal pregnancies

Objective:To investigate the distribution difference of HLA-G 14bp insertion/deletion polymorphism in maternal-child between early(late) onset of severe pre-eclampsia(PE) and normal pregnancies.Methods:Analysis 31 cases of early onset severe PE,25 cases of late onset severe PE and 30 cases of normal pregnancies,HLA-G Exon 8 genotyping was performed by polymerase chain reaction(PCR) in three groups including women and their neonates in which Chinese Han population.Respectively compare the distributions of th...