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19 October 2009

Influence of erythropoietin therapy on serum prohepcidin levels in dialysis patients

Mahmut ArabulABDEFG, Mustafa GulluluAD, Yusuf YilmazBCDEFG, Mehmet Ali ErenEFG, Bulent BaranEFG, Cuma Bulent GulEFG, Guzin KocamazEFG, Kamil DilekAD

Med Sci Monit 2009; 15(11): CR583-587 :: ID: 878243

Abstract

Background
Anemia is a common finding in dialysis patients. Recent evidence has accrued that hepcidin, an iron regulatory peptide, may play a crucial role in the pathophysiology of this condition. This study investigated the effect of erythropoietin (EPO) therapy on serum levels of prohepcidin, the pro-hormone of hepcidin, in patients with end-stage renal disease (ESRD) undergoing chronic dialysis treatment.
Material and Method
A total of 40 ESRD patients with renal anemia receiving either hemodialysis or peritoneal dialysis were included in this study. The patients were randomly allocated to EPO (subcutaneous 2000 microg three times weekly) plus parenteral iron (n=23) or parental iron only (n=17). Serum prohepcidin levels were measured before and at the end of the study.
Results
The two groups were comparable in their demographic and laboratory characteristics. No significant differences were found in hemoglobin, hematocrit, iron store indices, or serum levels of prohepcidin at study entry. Significant increases in both hemoglobin and hematocrit as well as a decrease in serum prohepcidin level were evident in the EPO group at the end of the 6-month follow-up in comparison with their values at study entry compared with the control group (P<0.01).
Conclusions
It is concluded that EPO therapy, besides enhancing erythropoiesis, modulates serum prohepcidin levels in dialysis patients.

Keywords: Recombinant Proteins, Protein Precursors - blood, Kidney Failure, Chronic - drug therapy, Infusions, Parenteral, Iron - therapeutic use, Hepcidins, Follow-Up Studies, Erythropoietin - therapeutic use, Antimicrobial Cationic Peptides - blood, Renal Dialysis, Time Factors

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750