Abstract
The aim of this study is to determine whether lecithin retinol acyltransferase (LRAT) as well as biomarkers of vitamin A (VA) and vitamin D are related to indices of obesity in childhood. A total of 164 children (aged 6-12 years, female 49.39%), comprising 66 children in the overweight/obese group and 98 children in the lean group, were included. LRAT expression was remarkably lower in the overweight/obese group than in the lean group (P < 0.01). Compared with the lean group, the overweight/obese group had elevated VA (0.95 ± 0.25 vs. 0.83 ± 0.21 µmol/L, P < 0.01). Moreover, the levels of 25(OH)D (25-hydroxyvitamin D) and its receptor were lower in overweight/obese subjects than in lean subjects (P = 0.06 and <0.05). LRAT was negatively correlated with body mass index and waist circumference (R = -0.27, P < 0.01, and R = -0.18, P < 0.05, respectively) and positively correlated with high-density lipoprotein (R = 0.18, P < 0.05). VA metabolism may be disordered in obese children, although children with obesity have higher VA levels than lean children.
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