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Osteocalcin, parathormone and hypercalciuria.

Authors :
Rico H
Paramo P
Pérez del Molino J
Nacarino L
Yagüe M
Source :
European urology [Eur Urol] 1988; Vol. 15 (3-4), pp. 239-42.
Publication Year :
1988

Abstract

Osteocalcin synthesis is dependent on the influence of the renal vitamin D metabolite, 1,25(OH)2D3. This metabolite is an etiological factor in some hypercalciurias, and osteocalcin may thus be a parameter for discovering them. In turn, parathormone, which stimulates 1,25(OH)2D3 synthesis, is also implicated in the hypercalciurias. Mean molecular parathormone, osteocalcin, 24-hour calciuria and the calcium/creatinine and hydroxyproline/creatinine ratios were determined in urine samples obtained after a 12-hour fast from 18 patients with absorptive hypercalciuria and 11 patients with renal hypercalciuria out of a total of 62 patients with renal lithiasis. No changes were observed in osteocalcin or parathormone, indicating that neither is valid for the diagnosis of hypercalciuria. Significant differences were only found in the Ca/Cr ratio (p less than 0.001), which was higher (0.31 +/- 0.07 vs. 0.13 +/- 0.04 mg/mg) in renal hypercalciuria than in absorptive hypercalciuria. No changes in osteocalcin have been reported in the hypercalciurias, but variations in parathormone have been reported, therefore requiring further study and thought to understand the processes involved.

Details

Language :
English
ISSN :
0302-2838
Volume :
15
Issue :
3-4
Database :
MEDLINE
Journal :
European urology
Publication Type :
Academic Journal
Accession number :
3265105
Full Text :
https://doi.org/10.1159/000473443