血清谷丙转氨酶与儿童超重、肥胖的关系

目的：探讨血清谷丙转氨酶（ALT）与儿童超重、肥胖的关系。方法：对年龄7～18岁的2889例正常儿童及702例超重、肥胖儿童的资料进行分析，测量身高、体重、腰围、血压，检测空腹血糖、血脂、ALT、胰岛素等生化指标，计算胰岛素抵抗指数。结果：男童ALT水平高于女童。随着体重指数（BMI）的增加，男女童正常组、超重组、肥胖组ALT水平均逐渐增加。ALT与BMI、腰围、甘油三酯、胰岛素抵抗指数等相关。在超重、肥胖儿童中，男童ALT升高组BMI、腰围、血压、甘油三酯、低密度脂蛋白、胰岛素抵抗指数均较ALT正常组高（P<0.05）；女童ALT升高组腰围、血压、胰岛素抵抗指数高于ALT正常组，而高密度脂蛋白降低（P<0.05）。结论：ALT与儿童超重、肥胖及其引起代谢异常如血脂异常、胰岛素抵抗相关。

Relationship between alanine aminotransferase and overweight or obesity in children

Objective To study the association of alanine aminotransferase(ALT) with overweight or obesity in children.Methods A total of 2889 healthy children and 702 overweight or obese children aged from 7 to 18 years who had received a physical examination were enrolled.Height,body weight,waist circumference,and blood pressure were measured,and the biochemical indicators including blood glucose,blood lipids,ALT,and insulin were detected.The insulin resistance index were calculated.Results The ALT level was significantly higher in boys than in girls.Along with the increase of BMI,the ALT level increased in the normal,overweight,and obese groups in both boys and girls.ALT was correlated with BMI,waist circumference,triglyceride,and insulin resistance index.Among the overweight or obese children,the boys with the increased ALT level had higher BMI,waist circumference,blood pressure,triglyceride,low density lipoprotein and insulin resistance index than the boys with normal ALT level(P<0.05);the girls with the increased ALT level had higher waist circumference,blood pressure and insulin resistance index and lower high density lipoprotein than the girls with normal ALT level(P<0.05).Conclusions ALT is correlated with overweight and obesity and metabolic disorders caused by overweight and obesity such as dyslipidemia and insulin resistance.