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Circulating vitamin D metabolite concentrations in children with nutritional rickets.

Authors :
Garabédian M
Vainsel M
Mallet E
Guillozo H
Toppet M
Grimberg R
NGuyen TM
Balsan S
Source :
The Journal of pediatrics [J Pediatr] 1983 Sep; Vol. 103 (3), pp. 381-6.
Publication Year :
1983

Abstract

Serum calcidiol, calcitriol, and 24,25-dihydroxyvitamin D concentrations were measured in 20 children with vitamin D-deficiency rickets. Vitamin D metabolite concentrations were measured in 17 of 20 patients before treatment and in 14 of 20 patients after vitamin D administration. Conclusions are as follows. (1) Before treatment, serum calcidiol seems to be the best criterion of D deficiency, as it was low (less than 8 ng/ml) in 15 of 17 studied children, whereas calcitriol and 24,25-dihydroxyvitamin D concentrations ranged from undetectable to high values (350 pg/ml and 5.9 ng/ml, respectively). (2) Low calcidiol concentrations may occur despite recent vitamin D intake: low serum values were found in children given vitamin D2 up to two months after the onset of therapy (50 micrograms/day). (3) Elevated calcitriol serum concentrations were observed in all children after initiation of vitamin D therapy; these high concentrations persisted for four weeks or more, even after normalization of serum calcium, phosphorus, and parathyroid hormone values. (4) Healing of biochemical abnormalities can occur even in children with low circulating concentrations of calcidiol and 24,25-dihydroxyvitamin D.

Details

Language :
English
ISSN :
0022-3476
Volume :
103
Issue :
3
Database :
MEDLINE
Journal :
The Journal of pediatrics
Publication Type :
Academic Journal
Accession number :
6604146
Full Text :
https://doi.org/10.1016/s0022-3476(83)80407-7