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    Association between Insulin-Like Growth Factor-1 and Uric Acid in Chinese Children and Adolescents with Idiopathic Short Stature: A Cross-Sectional Study. Wang Panpan,Ji Baolan,Shao Qian,Zhang Mei,Ban Bo BioMed research international Objective:The aim of this study was to examine the relationship between insulin-like growth factor-1 (IGF-1) and serum uric acid (UA) in Chinese children and adolescents with idiopathic short stature (ISS). Methods:A cross-sectional study of 91 Chinese children and adolescents with ISS was performed. Anthropometric measurements and biochemical parameters were tested. The standard deviation score of IGF-1 (IGF-1 SDS) was calculated. Results:A univariate analysis displayed a significant positive correlation between IGF-1 SDS and UA ( = 0.004). In multivariate piecewise linear regression, the levels of IGF-1 SDS increased with the elevation of UA when UA was between 168 mol/L and 301 mol/L ( 0.010, 95% CI 0.004-0.017; = 0.002). The levels of IGF-1 SDS decreased with the elevation of UA when UA was either less than 168 mol/L (  -0.055, 95% CI -0.081--0.028; < 0.001) or more than 301 mol/L (  -0.005, 95% CI -0.013-0.002; = 0.174). Conclusions:This study demonstrated a nonlinear relationship between IGF-1 and UA levels in Chinese children and adolescents with ISS. This finding suggests that either high or low levels of UA may have an adverse effect on IGF-1, whereas appropriate UA levels have a beneficial effect. 10.1155/2018/4259098