Abstract
Osteocalcin (OC), an aboundant non-collagenous bone protein, is inversely associated with parameters of glucose metabolism. Interactions between bone tissue and energy metabolism have not been thoroughly investigated during childhood. This study investigated OC, metabolic parameters and anthropometric characteristics in normal weight and overweight/obese children. This study comprised 108 (46 normal weight/62 overweight/obese) Swedish 2-9year old children. Anthropometric data, insulin, glucose, glycosylated haemoglobin (HbA1c), HOMA index, vitamin D, adiponectin, total OC, carboxylated OC (cOC) and undercarboxylated OC (ucOC) were analysed. No difference was found for total OC between the normal and overweight/obese groups, with a mean (±SD) value of 82.6 (±2.8) ng/mL and 77.0 (±2.4) ng/mL, (P=0.11), respectively. Overweight children had lower cOC levels, mean 69.1 (±2.2) ng/mL, vs. normal weight children, mean 75.6 (±2.5) ng/mL (P=0.03). The mean ucOC levels of 7.9 (±0.4) ng/mL in overweight children did not differ vs. normal weight children, mean level 7.0 (±0.4) ng/mL, (P=0.067). None of the three OC forms correlated with any of the measured parameters. The cOC levels were lower in overweight children. There was no correlati...Continue Reading
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