Osteoporosis International

, Volume 10, Issue 3, pp 222–225

Vitamin D Status During Puberty in French Healthy Male Adolescents

  • J. Guillemant
  • P. Taupin
  • H. T. Le
  • N. Taright
  • A. Allemandou
  • G. Pérès
  • S. Guillemant
Original Article

DOI: 10.1007/s001980050219

Cite this article as:
Guillemant, J., Taupin, P., Le, H. et al. Osteoporos Int (1999) 10: 222. doi:10.1007/s001980050219

Abstract:

The vitamin D status was determined on one to four occasions either after summer (September–October) or after winter (March–April) in 175 male adolescents (13–17 years), resulting in 394 measurements of serum 25-hydroxyvitamin D (25(OH)D) and intact parathyroid hormone (iPTH). The subjects lived in a rural area to the north of Paris (49° N). After summer the 25(OH)D concentration was 58.5 ± 18.0 nmol/l (mean ± SD), while after winter it had fallen to 20.6 ±6.0 nmol/l (p= 0.0001). Meanwhile the iPTH concentration was 2.76 ± 0.97 pmol/l (mean ± SD) after summer and increased to 4.20 ± 1.21 pmol/l after winter (p= 0.0001). All the results were pooled and a nonlinear population model with random parameters was used to describe the relationship between serum iPTH and 25(OH)D. When the concentration of 25(OH)D was higher than 83 nmol/l, an iPTH mean ‘plateau’ level at 2.48 pmol/l was reached. When 25(OH)D concentrations fell below 83 nmol/l, the increase in iPTH concentration accelerates, and when the mean 25(OH)D concentration was equal to or lower than 10 nmol/l the mean iPTH level (4.97 pmol/l) was twice as high as the ‘plateau’ value.

Key words:Adolescents – Parathyroid hormone – Vitamin D 

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 1999

Authors and Affiliations

  • J. Guillemant
    • 1
  • P. Taupin
    • 2
  • H. T. Le
    • 1
  • N. Taright
    • 3
  • A. Allemandou
    • 4
  • G. Pérès
    • 5
  • S. Guillemant
    • 1
  1. 1.Service de Biochimie MédicaleFR
  2. 2.Service de Biomathématiques et Statistiques MédicalesFR
  3. 3.INSERM U436, Faculté de Médecine Pitié-Salpêtrière; ParisFR
  4. 4.AFASEC Service Médical, ChantillyFR
  5. 5.Service de Médecine du Sport, Hôpital de La Pitié, Paris, FranceFR

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