先兆流产与MTHFR、MTRR基因多态性的关系

摘要

目的 调查叶酸代谢相关基因5,10-亚甲基四氢叶酸还原酶(MTHFR)、甲硫氨酸合成酶还原酶(MTRR)多态性与先兆流产的关系.方法 选择海南省三亚市妇幼保健院在2009-2011的139例具有先兆流产症状的育龄妇女(病例组)和139例健康对照(对照组)来进行病例对照研究,通过刮取受检者口腔黏膜上皮细胞,提取其基因组DNA,对受检者MTHFR和MTRR基因多态性采用荧光定量PCR进行分析检测.通过分析病例组和对照组基因多态性的分布差异,评估其与先兆流产的相关性.结果 病例组和对照组基因分布均符合Hardy-Weinberg平衡定律,但经比较分析,病例组MTHFR C677T、MTHFRA1298C和MTRR A66G的基因型构成与对照组比较差异均无统计学意义(P＞0.05).结论 在先兆流产患者和健康人中,基因多态性分布无显著差异,叶酸代谢相关基因是否为先兆流产的风险因子还有待进一步研究.%Objective To investigate the influence of the genotype distribution of methylenetetrahydrofolate reductase (MTHFR) C677T,A1298C and methionine synthase reductase (MTRR) A66G in threatened abortion of Chinese Han gestationalage women in Sanya city,which involved in the folic acid biosynthetic pathway among.Methods One hundred and thirty-nine samples of case group and the same number of control group were recruited from Sanya region in Hainan Province.Genomic DNA was extracted from the mucosal epithelium of the subjects.The gene polyrnorphisms of MTHFR and MTRR were detected by Fluorescence quantitative PCR technology.The distribution frequencies of both case group and control group.were analyzed and compared,to investigate the effect of the gene polymorphisms on threatened abortion.Results Both the case group and the control group complied with Hardy-Weinberg law.The genotype frequency of MTHFR C677T,MTHFR A1298C and MTRR A66G were not significantly different.Conclusion This study suggests that the gene polymorphism which involved in folic metabolism was not significantly different from the group of threatened abortion and the control group,and whether the metabolism related genes are the risk factors of threatened abortion need to be further discussed.