FTO基因SNP rs9939609,rs1421085多态性与儿童青少年肥胖及其代谢指标的相关性研究

被引:15
作者
曹凌峰 [1 ]
罗飞宏 [2 ]
支涤静 [2 ]
程若倩 [2 ]
沈水仙 [2 ]
杨毅 [1 ]
机构
[1] 复旦大学附属儿科医院儿科研究所
[2] 复旦大学附属儿科医院内分泌遗传代谢科
关键词
儿童; 青少年; 肥胖; 肥胖相关基因; 单核苷酸多态性; 胰岛素抵抗;
D O I
暂无
中图分类号
R723.14 [肥胖症];
学科分类号
100202 ;
摘要
目的研究FTO(fat-mass and obesity associated)基因SNP rs9939609和rs1421085多态性与儿童青少年单纯性肥胖及其代谢指标的相关性。方法以2004至2006年于复旦大学附属儿科医院内分泌门诊就诊的汉族单纯性肥胖和超重儿童青少年分别作为肥胖组和超重组;选择上海市某中学正常体重汉族学生作为正常对照组。分别测量身高和体重,计算BMI。测定血清空腹葡萄糖(FPG)、空腹胰岛素(FIns)、三酰甘油(TG)和总胆固醇(TC)水平。计算胰岛素抵抗指数(HOMA-IR)和胰岛素敏感指数(QUICKI)。抽提外周血基因组DNA,采用Taqman-MGB探针技术检测FTO基因SNPrs9939609和rs1421085多态性,分析不同基因型与代谢指标和BMI的相关性。结果肥胖组纳入236例,超重组纳入239例,正常对照组纳入241名。肥胖+超重组的BMI、FPG、FIns、TG和HOMA-IR显著高于正常对照组;②肥胖、超重和正常对照组rs9939609分型成功率分别为94.9%(224/236例)、97.9(234/239例)和95.9%(231/241名),rs1421085分型成功率分别为92.8%(219/236例)、97.1%(232/239例)和95.4%(230/241名)。rs9939609AA基因型频率:肥胖组为2.7%,超重组为0.4%,正常对照组为1.7%,肥胖+超重组A等位基因频率显著高于正常对照组(OR=1.437,P=0.048);rs1421085CC基因型频率:肥胖组为2.7%,超重组为0.9%,正常对照组为1.7%,肥胖+超重组C等位基因频率高于正常对照组,但差异无统计学意义(OR=1.388,P=0.0760);③rs1421085TC+CC基因型和rs9939609TA+AA基因型儿童青少年的BMI显著高于TT基因型(rs9939609:P=0.0003;rs1421085:P=0.0005);rs1421085TC+CC基因型和rs9939609TA+AA基因型与FPG、FIns、TG、TC、HOMA-IR、QUICKI无显著相关性。结论FTO基因SNP rs9939609和rs1421085多态性与中国汉族儿童青少年肥胖和(或)超重存在相关性。A等位基因频率远低于欧洲人群,对BMI的作用效果与欧洲人群相似,但对代谢指标影响存在显著差异。
引用
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页码:46 / 50
页数:5
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