Bone metabolism in celiac disease.
OBJECTIVE
To investigate the prevalence of both calcium metabolism alterations and bone defects in children with celiac disease (CD).


METHODS
We studied 54 untreated patients with CD (mean age, 7 years). We compared the serum concentration of calcium, magnesium, 25(OH)vitamin D3, alkaline phosphatase, and parathyroid hormone (PTH) of patients with CD with those of 60 healthy children. Children with CD with 2 laboratory alterations underwent DEXA examination, which was evaluated after 6 months of a gluten-free diet (GFD).


RESULTS
The calcium and the 25(OH)vitamin D3 levels were lower in children with CD than in control subjects, and the PTH level was higher in children with CD than in control subjects (P < .001). Hyperparathyroidism was found in 29 children with CD. Twenty patients tested positive for 2 laboratory alterations, and 10 of them were osteopenic. After 6 months of GFD calcium, 25(OH)vit.D3 and PTH levels normalized, with the improvement of bone mineral density.


CONCLUSIONS
Calcium metabolism defects are common in untreated children with CD, and they returned to normal after GFD. A detailed, time-consuming, and expensive study of bone metabolism is not necessary in children with CD shortly exposed to gluten who follow the GFD.
Zanchi
Chiara
C
Department of Reproductive and Development Science, University of Trieste and Institute of Child Health IRCCS, Burlo Garofolo, Trieste, Italy.
Di Leo
Grazia
G
Ronfani
Luca
L
Martelossi
Stefano
S
Not
Tarcisio
T
Ventura
Alessandro
A
D015502:Absorptiometry, Photon / Q000191:economics; D000469:Alkaline Phosphatase / Q000097:blood; D015415:Biomarkers / Q000097:blood; D001851:Bone Diseases, Metabolic / Q000175:diagnosis / Q000453:epidemiology* / Q000378:metabolism; D002118:Calcium / Q000097:blood; D002446:Celiac Disease / Q000178:diet therapy / Q000453:epidemiology* / Q000378:metabolism; D002648:Child; D002762:Cholecalciferol / Q000097:blood; D015897:Comorbidity; D003365:Costs and Cost Analysis; D005260:Female; D005983:Glutens / Q000008:administration & dosage; D006801:Humans; D008274:Magnesium / Q000097:blood; D008297:Male; D010281:Parathyroid Hormone / Q000097:blood; D015995:Prevalence
D015415:Biomarkers; D010281:Parathyroid Hormone; D002762:Cholecalciferol; D005983:Glutens; D000469:Alkaline Phosphatase; D008274:Magnesium; D002118:Calcium