Seasonal variability of vitamin D and bone metabolism in infliximab-treated paediatric Crohn's disease

Dolóresz Szabó, Éva Hosszú, András Arató, Katalin Eszter Müller, Nóra Béres, Péter László Lakatos, Mária Papp, Antal Dezsofi, Attila J. Szabó, Dániel Szucs, Gabor Veres

Research output: Contribution to journalArticle

3 Citations (Scopus)


Background: Paediatric Crohn's disease patients suffer from several complications, including low bone mineral density and inadequate serum levels of 25-hydroxy vitamin D. Aims: The aim of this prospective study was to address the effect of infliximab therapy on bone metabolism, bone mineral density and vitamin D homeostasis. The seasonal variability of serum vitamin D levels in relation to infliximab treatment was also analysed. Methods: Serum osteocalcin and beta-crosslaps (markers of bone metabolism), seasonal variability of vitamin D, and bone mineral density were assessed and followed throughout the yearlong treatment regimen of infliximab in 50 consecutive paediatric patients with moderate to severe Crohn's disease. Results: Bone forming osteocalcin levels were significantly (p< 0.001) increased during infliximab therapy. In contrast, no significant changes in beta-crosslaps and vitamin D levels were observed. Vitamin D levels were significantly different when the summer and winter periods were compared at week 0 (p= 0.039); however, this difference was not detected after one year of infliximab therapy. Despite the beneficial clinical effect of infliximab, there was no significant change in bone mineral density Z-scores after one year of treatment. Conclusion: Infliximab may beneficially affect bone homeostasis. Moreover, seasonal variability in vitamin D levels observed prior to initiation of infliximab treatment was diminished after one year of treatment.

Original languageEnglish
Pages (from-to)652-657
Number of pages6
JournalDigestive and Liver Disease
Issue number8
Publication statusPublished - Aug 1 2015


  • Bone markers
  • Bone mineral density
  • Crohn's disease
  • Infliximab
  • Paediatric
  • Vitamin D

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology

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