Circulating adipocyte fatty acid-binding protein, juvenile obesity, and metabolic syndrome.
2011
Adipocyte fatty acid-binding protein (A-FABP) links obesity and metabolic syndrome (MetS) and might be targeted in future therapies. Its utility as a MetS biomarker has been suggested in adults but has not been examined in children/adolescents. Our objectives were to identify metabolic parameters associated with A-FABP elevation in children and adolescents and to evaluate the effect of obesity intervention and A-FABP diagnostic utility. A-FABP and anthropometric, metabolic, and inflammatory indices were measured in 31 lean and 114 overweight/obese children and adolescents and reassessed after obesity intervention (1 year; diet and enhanced physical activity, with or without metformin). A-FABP was significantly higher in overweight/ obese than lean individuals, where it correlated with insulin, waist circumference (WC), and 2-h glucose independent of body mass index (BMI), age, gender, and developmental stage. The pattern of A-FABP associations differed between sexes. As a MetS indicator, A-FABP had 68% accuracy. The weight reduction program was effective in reducing A-FABP, BMI%, WC, triglycerides, and cholesterol. In conclusion, elevation in A-FABP is associated with MetS components independent of BMI status and can be reduced by diet and enhanced physical activity. A-FABP as a single MetS biomarker has a moderate accuracy
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