mTOR基因多态性与小儿癫癎易感性的相关性

Association of mammalian target of rapamycin gene polymorphisms with the risk of pediatric epilepsy

摘要:

目的 探讨哺乳动物雷帕霉素靶蛋白(mTOR)基因两个SNP 位点rs2295080 和rs2536 的多态性与小儿癫癎易感性的关系。方法 采用病例对照研究, 选取480 例癫癎患儿(包括116 例难治性癫癎)以及503 例健康儿童作为研究对象。利用PCR-RFLP 方法进行两个SNP 位点的多态性检测, 比较两组儿童基因型及等位基因的分布频率。结果 癫癎组SNP 位点rs2295080 的基因型(TT、TG、GG)频率和等位基因频率与健康对照组比较差异均无统计学意义(P>0.05);SNP 位点rs2536 的基因型(AA、AG、GG)频率两组比较差异亦无统计学意义(P>0.05), 但癫癎组的等位基因G 频率显著高于健康对照组(OR=1.344, P=0.042, 95%CI：1.010~1.789)。结论 mTOR 基因SNP 位点rs2536 与癫癎的易感性可能相关。

Abstract:

Objective To study the association between two single nucleotide polymorphisms (SNP), rs2295080 and rs2536, in mammalian target of rapamycin (mTOR) gene and the susceptibility to pediatric epilepsy. Methods A case-control study was performed on 480 children with epilepsy (116 cases of refractory epilepsy) and 503 healthy children. SNP rs2295080 and rs2536 in the mTOR gene were detected by polymerase chain reaction restriction and fragment length polymorphisms (PCR-RFLP). Genotype and allele frequencies of SNP rs2295080 and rs2536 were compared between the children with epilepsy and healthy controls. Results There were no significant differences in the genotype and allele frequencies of SNP rs2295080 between the children with epilepsy and healthy controls. There were no significant differences in the genotype frequencies of SNP rs2536 between the two groups either, but the frequency of G allele of SNP rs2536 was higher in children with epilepsy than that in healthy controls (P=0.042, OR=1.344, 95%CI:1.010-1.789). Conclusions SNP rs2536 of mTOR gene may be associated with the risk of pediatric epilepsy.