Abstract
Few studies have investigated the relationship between paediatric nonalcoholic fatty liver disease (NAFLD) and insulin-like growth factor 1 (IGF-1). This study, carried out from July 2013 to September 2015, aimed to fill the gap and added metabolic parameters to the analysis. This was a cross-sectional study of 168 obese children and adolescents (84% male), divided into two groups based on the presence (n=90) or absence (n=78) of NAFLD. All participants underwent clinical examinations, anthropometric and laboratory examinations and liver ultrasonography. Nonalcoholic fatty liver disease patients had significantly lower IGF-1 standard deviation score (IGF-1 SDS) and higher body mass index (BMI), homeostasis model assessment of insulin resistance (HOMA-IR) and uric acid levels than the control group. The prevalence rate of NAFLD was negatively correlated with the IGF-1 SDS. IGF-1 SDS was negatively associated with NAFLD, while BMI, HOMA-IR and uric acid were positively associated with NAFLD. The combined analysis of the area under the receiver operating characteristic curve for multiple variables, including IGF-1 SDS, BMI, HOMA-IR and uric acid, was 0.812, with a sensitivity of 78.89% and specificity of 74.36%. IGF-1, BMI, HOMA-IR and uric acid were useful markers of NAFLD in obese children and adolescents.
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