Objective To examine the association between obesity and high blood pressure （BP） in Chinese children and adolescents. Methods Body mass index （BMI） and blood pressure measurements of 197 191 children aged 7-17 years were obtained from a Chinese national survey in 2010. Obesity and high BP were defined according to the reference values for Chinese children. Adjusted odds ratios （ORs） and 95% confidence intervals （CIs） of different BMI categories for high BP, as well as the population attributable risk percent （PAR%）, were also calculated. Results The prevalence of high BP was 16.1% for boys and 12.9% for girls in 2010. Overweight and obese children had a significantly higher prevalence of high BP than non-overweight children in both boys and girls in each age group. ORs （95% CI） for high BP were 4.1 （3.9, 4.4） in obese boys and 4.0 （3.7, 4.3） in obese girls. The overall PAR% for high BP due to overweight and obesity was 14.4%. Conclusion Overweight and obese children have a significantly higher risk of high BP than non-overweight children. Eliminating overweight and obesity could reduce 14.4% of high BP cases.
目的：研究胆固醇调节元件结合蛋白2基因（sterol regulatory element binding protein 2 gene，SREBP2） rs2228314多态性与儿童青少年肥胖和血脂水平的关系。方法：研究对象来自前期工作中收集的两批样本，共2030名7岁至18岁中小学生，对这些学生进行身体测量和血清总胆固醇（total cholesterol，TC）、三酰甘油（triacylgly-ceride，TG）、高密度脂蛋白胆固醇（low density lipoprotein-cholesterol，HDL-C）、低密度脂蛋白胆固醇（low density lipo-protein-cholesterol ，LDL-C）的检测。采用基质支持的激光释放/电离飞行时间质谱分析检测rs2228314多态性基因型。在显性模型下进行统计学分析，采用t检验比较不同基因型组间血脂水平（计量资料）的差异，采用Logistic回归分析rs2228314多态性与血脂水平的异常（分类资料）和肥胖的关系。结果：rs2228314多态性GC/CC基因型组的HDL-C水平低于GG纯合子，差异有统计学意义（0．10＆#177;0．35 vs．0．14＆#177;0．36，P＝0．020），在显性模型下，调整研究样本、性别和年龄后，rs2228314多态性与 HDL-C 水平的异常相关（ OR ＝1．400，95％ CI：1．027～1．907， P ＝0．033）。调整研究样本、性别、年龄和HDL-C 水平后，rs2228314多态性与肥胖的相关性无统计学意义（OR ＝1．178，95％CI：0．971～1．430， P＝0．096）。结论：携带SREBP2基因rs2228314多态性GC/CC基因型的儿童青少年发生HDL-C水平异常的风险高于GG基因型携带者。
