Dynamics of bone turnover in children with GH deficiency treated with GH until final height

G I Baroncelli1, S Bertelloni, C Ceccarelli

  • 1Endocrine Unit, Division of Pediatrics, Department of Reproductive Medicine and Pediatrics, University of Pisa, Pisa, Italy.

Insights

Children with growth hormone deficiency (GHD) show reduced bone turnover, which is stimulated by long-term growth hormone (GH) treatment. Bone markers do not predict final height in GHD patients.

Area of Science:

  • Pediatric Endocrinology
  • Bone Metabolism Research
  • Growth Hormone Therapy

Background:

  • Children with growth hormone deficiency (GHD) exhibit altered bone turnover dynamics.
  • Understanding bone metabolism is crucial for optimizing growth hormone (GH) therapy outcomes.

Purpose of the Study:

  • To investigate the longitudinal changes in bone turnover markers in children with GHD during extended GH treatment.
  • To assess the relationship between bone marker dynamics and growth response in GHD patients.

Main Methods:

  • Longitudinal measurement of growth velocity and serum bone markers (osteocalcin, PICP, ICTP) in 24 GHD patients.
  • Comparison of bone marker levels at baseline, during treatment, and at final height against controls.
  • Statistical analysis to determine correlations between bone marker changes and growth parameters.

Main Results:

  • Baseline bone turnover markers (OC, PICP, ICTP) were significantly lower in GHD children compared to controls.
  • GH treatment led to a significant increase in bone markers, peaking at 12 months.
  • While OC and PICP declined post-year one, ICTP remained stable; all markers stayed elevated above baseline.
  • Changes in bone markers did not correlate with growth rate or final height.

Conclusions:

  • Children with GHD have diminished bone turnover, which is enhanced by long-term GH therapy.
  • Serum markers OC, PICP, and ICTP are not predictive of growth velocity or final height in GHD patients undergoing GH treatment.
Abstract

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