Erschienen in:
26.02.2018 | Nephrology - Original Paper
Vitamin D supplementation improves endothelial dysfunction in patients with non-dialysis chronic kidney disease
verfasst von:
Qingyan Zhang, Miao Zhang, Hengjin Wang, Cheng Sun, Yuan Feng, Wei Zhu, Dongwei Cao, Qiuyuan Shao, Nan Li, Yangyang Xia, Tianfeng Tang, Cheng Wan, Jing Liu, Bo Jin, Min Zhao, Chunming Jiang
Erschienen in:
International Urology and Nephrology
|
Ausgabe 5/2018
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Abstract
Purpose
Hypovitaminosis D is common in chronic kidney disease (CKD) and is associated with endothelial dysfunction and cardiovascular events. This study aimed to investigate the effects of vitamin D supplementation on endothelial dysfunction in non-dialysis CKD patients.
Materials and methods
Seventy-one non-dialysis CKD patients with low vitamin D (serum 25(OH)D < 30 ng/mL) were recruited. Patients received oral cholecalciferol 50,000 units once a week for 12 weeks. Changes in endothelial function by brachial artery flow-mediated dilation (FMD), soluble vascular cell adhesion molecule-1 (sVCAM-1), and sE-selectin were studied.
Results
There was a significant increase in serum levels of 25(OH)D after cholecalciferol supplementation (33.7 ± 12.1 vs. 13.2 ± 5.4 ng/mL, P < 0.001). Multivariable regression analysis showed that higher proteinuria (β = − 0.548, P < 0.001) and lower levels of 25(OH)D (β = 0.360, P < 0.001) at baseline were related to lower 25(OH)D level after supplementation. FMD increased significantly from 4.4 ± 1.3 to 5.1 ± 1.5% (P < 0.001), and soluble endothelial biomarkers decreased: sVCAM-1 from 926.9 ± 158.0 to 867.0 ± 129.0 ng/mL (P < 0.001), and sE-selectin 69.7 ± 15.8 to 63.3 ± 14.7 ng/mL (P < 0.001).
Conclusions
Vitamin D supplementation can improve endothelial dysfunction in pre-dialysis CKD patients.