Abstract
Background
Iron may contribute to vascular injury through reactive oxygen species. Hemodialysis patients frequently receive iron supply for correction of anemia and are at a high risk of cardiovascular disease. We tested the relationship between iron status and change in arterial stiffness in hemodialysis patients.
Patients and methods
We measured iron status in 53 hemodialysis patients and studied the association with clinical, biochemical, and arterial stiffness measured by brachial–ankle pulse wave velocity (baPWV) over 3 years. The blood pressure was controlled to below 140/90 mmHg by anti-hypertensive drugs.
Results
Median and interquartile range of baseline baPWV, baPWV at 3 years, and ΔbaPWV (difference between 3-year baPWV and baseline baPWV) were following: 17.6 (14.8–18.9), 16.9 (15.3–19.9), and 0.2 (−1.2 to 2.7) m/s. At baseline, baPWV was positively correlated with age, serum ferritin, and systolic blood pressure in univariate analysis. However, in multivariate analysis, only age and serum ferritin remained the significant determinants of baseline baPWV. After 3 years, ΔbaPWV was negatively correlated with age and positively with 3-year averaged serum ferritin in univariate analysis. Then, in multivariate analysis, only 3-year averaged serum ferritin was the important determinant of ΔbaPWV. ΔbaPWV was significantly increased in patients with 3-year averaged serum ferritin >500 ng/mL compared to patients with 3-year averaged serum ferritin ≤500 ng/mL.
Conclusions
In hemodialysis patients, serum ferritin associates with the progressive arterial stiffness, especially when serum ferritin >500 ng/mL.
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Kao-Chang Lin and Meng-Yi Tsai have contributed equally to this work.
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Lin, KC., Tsai, MY., Chi, CL. et al. Serum ferritin is associated with arterial stiffness in hemodialysis patients: results of a 3-year follow-up study. Int Urol Nephrol 47, 1847–1853 (2015). https://doi.org/10.1007/s11255-015-1090-1
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DOI: https://doi.org/10.1007/s11255-015-1090-1