Abstract
Background
Dialysis patients received intravenous iron to treat anemia and had high prevalence of peripheral artery disease (PAD). We hypothesized that high iron status might associate with the progression of PAD among hemodialysis patients. Therefore, we evaluated the relationship between iron status and progression of PAD.
Methods
We measured iron status in 74 hemodialysis patients and studied the association with clinical, biochemical, and vascular parameters including progression of PAD measured by ankle-brachial index (ABI) over 3 years.
Results
Mean baseline ABI was 1.03 ± 0.18. Mean ABI at 3 years was 0.95 ± 0.20. Mean ∆ABI (change in ABI after 3 years) was −0.08 ± 0.14. Serum ferritin was negatively correlated with baseline ABI (r = −0.232, p = 0.046). After 3 years, ∆ABI was negatively associated with 3-year averaged serum ferritin, phosphorus, and calcium–phosphate product (Ca × P) (r = −0.253, p = 0.029; r = −0.278, p = 0.016; r = −0.288, p = 0.013; respectively). After an adjusted model, 3-year averaged serum ferritin and Ca × P remained the significant determinants of ∆ABI (β = −0.234, p = 0.038; β = −0.271, p = 0.017; respectively). ∆ABI was significantly different between 3-year averaged serum ferritin level ≥600 and <600 ng/mL (p = 0.032).
Conclusions
In hemodialysis patients, high serum ferritin associates with progression of PAD, especially among those with high Ca x P level.
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Abbreviations
- ABI:
-
Ankle-brachial index
- ∆ABI:
-
Difference between 3-year ABI and baseline ABI
- Ca x P:
-
Calcium–phosphate product
- CVD:
-
Cardiovascular disease
- DM:
-
Diabetes mellitus
- PAD:
-
Peripheral artery disease
- PTH:
-
Parathyroid hormone
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The authors declared no conflicts of interest relevant to this manuscript.
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C.-T. Lien and K.-C. Lin contributed equally to this work.
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Lien, CT., Lin, KC., Tsai, YF. et al. Serum ferritin is associated with progression of peripheral arterial disease in hemodialysis patients. Clin Exp Nephrol 19, 947–952 (2015). https://doi.org/10.1007/s10157-014-1074-y
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DOI: https://doi.org/10.1007/s10157-014-1074-y