[Circulating metabolites of vitamin D in 14 children with hypercalcemia].
Circulating vitamin D metabolite concentrations, i.e. 25-(OH)D, 24,25-(OH)2D, 1,25-(OH)2D have been assayed in 14 hypercalcemic children. Results are as follows: a) Children with vitamin D intoxication (n = 2) had elevated serum 25-(OH)D and 24,25-(OH)2D concentrations but their 1,25-(OH)2D concentrations were similar to those found in normocalcemic children (10-110 pg/ml); b) Children with familial idiopathic hypercalcemia and hypocalciuria (n = 5), children with hypercalcemia and either Bartter's syndrome (n = 1), hemangiomatosis (n = 1), osteopetrosis after medullary graft (n = 1), also had 1,25-(OH)2D concentrations in the normal range; c) In contrast, 1,25-(OH)2D were elevated (160-470 pg/ml) in the four children with severe idiopathic hypercalcemia and elfin facies.
D015650:24,25-Dihydroxyvitamin D 3; D002112:Calcifediol / Q000097:blood*; D002117:Calcitriol / Q000097:blood*; D002118:Calcium / Q000652:urine; D002675:Child, Preschool; D004100:Dihydroxycholecalciferols / Q000097:blood*; D005260:Female; D006801:Humans; D006934:Hypercalcemia / Q000097:blood* / Q000209:etiology / Q000235:genetics; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D014807:Vitamin D / Q000378:metabolism / Q000506:poisoning
D004100:Dihydroxycholecalciferols; D014807:Vitamin D; D015650:24,25-Dihydroxyvitamin D 3; D002117:Calcitriol; D002112:Calcifediol; D002118:Calcium
Métabolites circulants de la vitamine D chez 14 enfants en état d'hypercalcémie.