Journal
KIDNEY & BLOOD PRESSURE RESEARCH
Volume 35, Issue 5, Pages 349-354Publisher
KARGER
DOI: 10.1159/000335952
Keywords
Chronic kidney disease; 25-Hydroxyvitamin D; Pulse wave velocity; Vascular calcification
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2011-0005969]
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Background/Aims: The role of vitamin D in the process of vascular calcification is unclear in patients with chronic kidney disease. We investigated whether serum 25-hydroxyvitamin D [25(OH)D] is associated with vascular calcification in predialysis and dialysis patients. Methods: We included 86 predialysis and 139 dialysis patients. The simple vascular calcification score (SVCS) was evaluated by examining plain Xrays of the pelvis and hands as described previously. The carotid-to-femoral pulse wave velocity (CF-PWV) was assessed with a commercially available device. Results: We found a high prevalence of vitamin D deficiency in our population (78.2%). Vascular calcification was present in 46.2% of all patients. Higher calcification (SVCS >3) was significantly associated with lower 25(OH)D levels in predialysis and dialysis patients. Multiple logistic regression analysis for SVCS >3 showed that 25(OH)D levels were negative independent predictors in predialysis (OR: 0.781; 95% CI: 0.623-0.908, p = 0.019) and dialysis patients (OR: 0.805; 95% CI: 0.749-0.853, p = 0.009). Lower 25(OH)D levels were associated with higher CF-PWV in predialysis patients, but this inverse relationship was no longer present in multivariate analysis. Conclusion:We showed an independent relationship between low serum 25(OH)D levels and vascular calcification in both predialysis and dialysis patients. Copyright (c) 2012 S. Karger AG, Basel
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