脂联素基因多态性变化与儿童单纯性肥胖的关系
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R723.14

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Association of adiponectin gene polymorphism with obesity in children
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    摘要:

    目的:分析长沙市区儿童脂联素基因+45 位点单核苷酸多态性(SNP)基因型的分布频率,探讨其与儿童肥胖症的相关性。方法:随机抽取147例肥胖儿童及 118 例健康儿童,采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)方法检测脂联素基因 SNP+45 多态性位点、双抗体夹心 ELISA 测定血清脂联素。同时进行腰围(WC)、腰臀比(WHR)、体脂百分比(%BF)、收缩压(SBP)、舒张压(DBP)、空腹血糖(FPG)、血清甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、空腹胰岛素水平(FINS)、稳态模型胰岛素抵抗指数(HOMA-IR)的测定。结果:肥胖组和正常组的SNP + 45 多态性发生频率分别为 40.5% 和 25.4%,两组间基因型分布与等位基因频率差异均有统计学意义(P<0.05)。肥胖儿童中,TT 基因型与 TG、GG 型相比,其脂联素水平高,而 %BF、HOMA-IR、TC 和 LDL-C 水平低,差异有统计学意义(P<0.05)。结论:脂联素基因SNP+45 变异可能与儿童单纯性肥胖相关,T→G 突变可增加儿童肥胖症的发生,同时使脂联素水平下降。

    Abstract:

    OBJECTIVE: To study the distribution characteristics of adiponectin gene +45 single nucleotide polymorphisms (SNP) in Chinese children, and to determine the role of adiponectin gene +45 polymorphisms in the pathogenesis of childhood obesity. METHODS: A total of 147 Chinese obese and 118 healthy children were randomly selected and enrolled to identify adiponectin gene SNP+45 polymorphism by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. Plasma adiponectin levels were determined using ELISA. Waist circumference (WC), waist to hip ratio (WHR), percentage of body fat (%BF), systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting plasma glucose (FPG), serum triglycerides (TG), total cholesterol (TC), high density lipoprotein-cholesterol (HDL-C), low density lipoprotein-cholesterol (LDL-C), plasma fasting insulin (FINS), and homeostasis model assessment of insulin resistance (HOMA-IR) were measured. RESULTS: The allelic frequency of adiponectin gene SNP+45 in children with obesity and healthy controls were 40.5% and 25.4%, respectively. There were significant differences in the distribution of genotypes and the allelic frequency between the two groups (P<0.05). The plasma adiponectin levels were significantly higher, in contrast, %BF, HOMA-IR, TC and LDL-C levels were significantly lower in obese children with TT genotype than those in obese children with TG or GG genotype. CONCLUSIONS: The adiponectin gene SNP+45 polymorphism may be associated with pathogenesis of obesity in children. T→G variance may be associated an increased risk of childhood obesity and result in a decreased level of adiponectin.

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吴静,颜伟建,莫娟,杨浩波,王昭昭,雷闽湘,彭烈武.脂联素基因多态性变化与儿童单纯性肥胖的关系[J].中国当代儿科杂志,2011,13(7):539-542

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