[Calcium-phosphorus metabolism in celiac disease in children].
The Authors studied the changes of the main parameters of calcium-phosphate metabolism in twenty four untreated celiac children (mean age: 23.7 +/- 14.4 months) and in eleven control subjects (mean age: 28.5 +/- 21.2 months). 16 patients were checked again one and three months after treatment was begun. Compared with controls patients show at diagnosis a significant increase of serum phosphate (P = 0.025) and a decrease of calcitonin levels (P = 0.02), whereas serum calcium is slightly lower and parathyroid hormone higher with serum levels above normal range in 5 of the coeliac patients (20.8%). During the three months of gluten free diet we find a significant increase of calcemia values (ANOVA: P = 0.025) together with a decrease of serum phosphate (ANOVA: P = 0.009) and of parathyroid hormone levels (ANOVA: P = 0.042). No significant change was found in vitamin D metabolites levels. The Authors conclude that coeliac disease affect clearly mineral metabolism. Actually the tendency to hypocalcemia, due to abnormalities of the intestinal mucosa, and the comparative iperphosphatemia, cause in some patients a compensatory increase of PTH levels. This increase seems to be the cause of the osteoporotic lesions described in current literature. Rickets due to the lack of vitamin D does not occur.