Effect of vitamin D supplementation on 24-hour urine calcium in patients with calcium Urolithiasis and vitamin D deficiency
Int. braz. j. urol
;
45(2): 340-346, Mar.-Apr. 2019. tab, graf
Artículo
en Inglés
| LILACS
| ID: biblio-1002204
ABSTRACT
ABSTRACT Purpose:
Hypercalciuria is one of the risk factors for calcium kidney stone formation (the most common type of urinary stones). Although vitamin D deficiency is prevalent among urolithiasis patients, the effect of vitamin D supplementation on urine calcium in these patients is still unclear. Materials andMethods:
In this retrospective study, medical and laboratory tests records of 26 patients with recurrent calcium kidney stones and vitamin D deficiency treated with 50000IU vitamin D per week for 8-12 weeks were analyzed. The changes in 24-hour urine calcium (24-h Ca), serum 25-hydroxyvitamin D (25 (OH) D), serum parathormone (PTH), other 24-hour urine metabolites and calculated relative supersaturations of calcium oxalate (CaOxSS), calcium phosphate (CaPSS) and uric acid (UASS) were assessed. Moreover, correlations between changes in 24-h Ca and other aforementioned variables were assessed.Results:
Serum 25 (OH) D and 24-h Ca increased after vitamin D supplementation, while serum PTH decreased (p < 0.001, for all analyses). The levels of 24-hour urine sodium and urea increased significantly (p = 0.005 and p = 0.031, respectively). The levels of CaOxSS and CaPSS increased, but the changes were not significant (p = 0.177, and p = 0.218, respectively). There were no correlations between the changes in 24-h Ca and serum 25 (OH) D or PTH.Conclusions:
The result of current study suggests that although urine Ca increased in vitamin D supplemented patients, this increase was not associated with the increase in serum vitamin D and may be due to other factors such as dietary factors. Further randomized clinical trials considering other factors associated with urine Ca are warranted.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Vitamina D
/
Deficiencia de Vitamina D
/
Vitaminas
/
Calcio
/
Urolitiasis
Tipo de estudio:
Estudio observacional
/
Factores de riesgo
Límite:
Anciano
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Int. braz. j. urol
Asunto de la revista:
Urología
Año:
2019
Tipo del documento:
Artículo
País de afiliación:
Irán
Institución/País de afiliación:
Shahid Beheshti University of Medical Sciences/IR
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