先天性巨结肠症和肛门直肠畸形中甲基化CpG结合蛋白2基因第3外显子突变分析  被引量:2

Mutation analysis of methyl CpGlbinding protein 2 gene (exon 3) in Hirschsprung disease and anorectal malformations

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作  者:伍美[1] 高红[1] 弭杰[1] 黄英[2] 张志波[2] 王维林[2] 

机构地区:[1]中国医科大学附属盛京医院卫生部小儿先天畸形重点实验室,沈阳110004 [2]中国医科大学附属盛京医院小儿外科,沈阳110004

出  处:《中华胃肠外科杂志》2011年第10期764-767,共4页Chinese Journal of Gastrointestinal Surgery

基  金:基金项目:国家自然科学基金(30772277)

摘  要:目的探讨甲基化CpG结合蛋白2(MeCP2)基因第3外显子突变与先天性巨结肠症(HSCR)和先天性肛门直肠畸形(ARM)的关系。方法采用PCR和DNA直接测序的方法.检测120例HSCR、50例ARM患儿和120名健康儿童外周血MeCP2基因第3外显子(MeCP2.E3)的突变情况。结果MeCP2.E3测序结果显示,120例HSCR患儿的碱基置换突变有45例(37.5%).其中12例(10.0%)为突变型纯合子;50例ARM患儿的碱基置换突变有14例(28.0%),其中4例(8%)为突变型纯合子:而健康对照儿童均未发现突变(P〈0.05)。结论HSCR和ARM患儿外周血MeCP2.E3存在突变.可能与疾病的发生有关.Objective To explore the relationship between exon 3 mutation in the methyl CpG- binding protein 2 (MeCP2-E3) gene and Hirschsprung disease (HSCR) and anorectal malformations (ARMs). Methods PCR and DNA sequencing were used to detect the mutation of MeCP2-E3 in 120 healthy controls, 120 HSCR, and 50 ARMs. Results On sequencing, 45(37.5%) children with HSCR had basic replacement in MeCP2-E3, 12 (10.0%) of them were homozygous mutation. Fourteen(28.0%) children with ARMs had basic replacement in MeCP2-E3, 4(8%) of them were homozygous mutation. There were no mutation in the control group. Conclusions Mutation of MeCP2- E3 is present in the peripheral blood of children with HSCR or ARMs, which may contribute to the development of Hirschsprung disease or anorectal malformations.

关 键 词:先天性巨结肠症 肛门直肠畸形 甲基化CpG结合蛋白2 突变 

分 类 号:R726.5[医药卫生—儿科]

 

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