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Minerva Endocrinologica 2012 September;37(3):275-82

Copyright © 2012 EDIZIONI MINERVA MEDICA

language: English

Bone mineral status, bone turnover markers and vitamin D status in children with congenital adrenal hyperplasia

Okten A. 1, Cakir M. 2, Makuloglu M. 2

1 Department of Pediatric Endocrinology; 2 Department of Pediatrics, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey


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Aim. Treatment of congenital adrenal hyperplasia (CAH) consists of lifelong glucocorticoid therapy (GT), and long-term GT may cause osteoporosis. We aim to analyse bone mineral status (BMS) and bone turnover markers in children with CAH.
Methods. The study included 17 patients with CAH (mean age ± SD; 7.96± 3.58 years, range 3-13.3 years) and age-matched controls. Bone metabolism rate, vitamin D status and BMS were analyzed. Alterations in bone metabolism rate were prospectively evaluated.
Results. We found that BMS Z score did not differ between the patients and control group. Vitamin D deficiency is common in groups, and osteocalcin, β crosslaps and PTH was higher in patients than the healthy controls (5.3±3.4 vs. 3.2±1.8, P=0.036 and 2.19±1.59 vs. 1.27±0.99, P=0.049, 38.1±18.3 vs. 22.7±13.3, P=0.009, respectively). BMS Z score was only positively correlated with 17 OHP levels (r=0.462, P=0.05) and height SD Z scores (r=0.477, P=0.049). Seasonal measurements of vitamin D status, PTH levels and bone turnover markers exhibit that PTH levels, osteocalcin and β crosslaps increase in response to low vitamin D levels.
Conclusion. Children with CAH have BMS values that are not different age-matched controls. Vitamin D status should be systematically measured in CAH patients, and supplementation should be recommended in patients with low vitamin D levels.

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