Dynamics of bone turnover in children with GH deficiency treated with GH until final height
- PMID: 10822216
- DOI: 10.1530/eje.0.1420549
Dynamics of bone turnover in children with GH deficiency treated with GH until final height
Abstract
Objective: To examine the dynamics of bone turnover in children with growth hormone deficiency (GHD) during long-term treatment.
Design: We longitudinally measured growth velocity and serum concentrations of osteocalcin (OC), carboxyterminal propeptide of type I procollagen (PICP), and cross-linked carboxyterminal telopeptide of type I collagen (ICTP) in 24 patients with GHD during long-term GH treatment until final height (age: 7.7+/-0.7 and 16.9+/-0.5 years at baseline and at final height respectively).
Results: At baseline, OC, PICP, and ICTP levels were significantly (P<0.0001) reduced in comparison with prepubertal bone age-matched controls (10.2+/-2.3 microgram/l and 22.5+/-7.6 microgram/l; 187.8+/-26.2 microgram/l and 328. 4+/-74.3 microgram/l; 7.7+/-2.0 microgram/l and 14.2+/-1.3 microgram/l respectively). During the first year of treatment mean levels of the bone markers increased significantly (P<0.0001) with a peak at 12 months. After the first year of treatment, OC and PICP levels progressively declined, whereas ICTP levels remained stable until the final height; in any case, bone marker levels remained significantly higher (P<0.03-P<0.0001) than baseline. The change in bone marker levels at 6 and 12 months of treatment with respect to the baseline values was not related to growth rate during long-term treatment or final height.
Conclusions: The results show that children with GHD have reduced bone turnover at baseline, and that long-term GH treatment is associated with a stimulation of bone turnover. OC, PICP, and ICTP do not predict growth rate during long-term treatment or final height in children with GHD.
Comment in
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Markers of bone turnover in the evaluation of the response to GH treatment in GH-deficient children.Eur J Endocrinol. 2000 Jun;142(6):545-7. doi: 10.1530/eje.0.1420545. Eur J Endocrinol. 2000. PMID: 10822215 No abstract available.
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