Serum 25-hydroxyvitamin D level is negatively associated with serum phosphorus level among stage 3a-5 chronic kidney disease patients.

Nefrología : publicación oficial de la Sociedad Española Nefrologia
Ahmed FayedVascular Calcification Group (VCG)

Abstract

Serum 25-hydroxyvitamin D (25(OH)D) negatively correlates with serum phosphorus level of stage 3a-5 chronic kidney disease (CKD) patients. So far, no explanation has been provided for this negative association. To confirm this negative association and determine if this relationship is mediated through other known co-morbid factors. One hundred (57 male and 43 female) pre-dialysis stage 3a-5 CKD patients were selected. Estimated glomerular filtration rate (eGFR), serum calcium (Ca), phosphorus (P), 25(OH)D, parathyroid hormone (PTH), and intact fibroblast growth factor-23 (FGF23) were assessed. A correlation analysis between serum 25(OH)D and the different parameters studied was performed. Multivariate linear regression analysis was carried out to determine predictors of 25(OH)D. The negative association between serum 25(OH)D and serum P was confirmed in univariate and multivariate correlation analysis. On the other hand, we failed to detect a significant association between 25(OH)D and serum FGF23. Serum P is the most important independent predictor of 25(OH)D in these patients (partial R2=0.15, p<0.0001). Serum P is likely to have a direct negative impact on serum 25(OH)D. Further studies are needed to determine the underlying...Continue Reading

Citations

Aug 28, 2020·Pediatric Nephrology : Journal of the International Pediatric Nephrology Association·Happy SawiresRasha Helmy

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