title: Lower erythropoietin and iron supplementation are required in hemodialysis patients with hepatitis C virus infection.
abstract: BACKGROUND
  Chronic hepatitis C virus (HCV) infection is a common infectious agent in chronic hemodialysis (HD) patients. In this prospective case-control study, we aimed to investigate the influence of chronic HCV infection on erythropoietin (EPO) and iron requirement in HD patients.
  
  
  METHODS
  49 HD patients (24 male, 25 female, mean age 47 +/- 15 years) were included. The mean time spent on dialysis was 39 +/- 38 months, and follow-up time was 1 year for this study. Biochemical analyses and complete blood counts together with iron status of the patients (transferrin saturation and serum ferritin levels) were measured monthly. Highly sensitive C-reactive protein (hs-CRP) levels were measured within 3-month intervals. Endogenous EPO levels were measured by enzyme-linked immunoassay 2 weeks after cessation of EPO treatment.
  
  
  RESULTS
  Eleven of the HD patients (22%) were anti-HCV(+). There was no difference in age, sex, time on dialysis, distribution of primary renal diseases, predialytic BUN, Kt/V, albumin and i-PTH levels between HCV(+) and (-) patients. Anti-HCV-positive patients required significantly lower weekly doses of EPO (87 +/- 25 IU/kg vs 129 +/- 11 IU/kg, p = 0.042) and iron (16.8 +/- 12.2 mg vs 32.6 +/- 16.1 mg, p = 0.02) replacement than anti-HCV(-) group; hs-CRP levels were similar between study groups. Serum endogenous EPO levels were significantly higher in HCV(+) patients than HCV(-) HD patients (9.43 +/- 6.47 mU/ml vs 3.59 +/- 2.08 mU/ml, p = 0.008).
  
  
  CONCLUSIONS
  Anti-HCV(+) HD patients had higher serum EPO levels and required less EPO and iron replacement as compared to anti-HCV(-) patients. Because of the changes in iron metabolism, iron treatment should be carefully administered in HD patients with HCV.
authors.affiliation: Department of Internal Medicine, Division of Nephrology, Selcuk University Medical School, Konya, Turkey.
authors.forename: L
authors.initials: L
authors.lastname: Altintepe
authors.forename: E
authors.initials: E
authors.lastname: Kurtoglu
authors.forename: Z
authors.initials: Z
authors.lastname: Tonbul
authors.forename: M
authors.initials: M
authors.lastname: Yeksan
authors.forename: A
authors.initials: A
authors.lastname: Yildiz
authors.forename: S
authors.initials: S
authors.lastname: Türk
mesh_terms: D002097:C-Reactive Protein / Q000032:analysis; D016022:Case-Control Studies; D004797:Enzyme-Linked Immunosorbent Assay; D004921:Erythropoietin / Q000008:administration & dosage* / Q000097:blood / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D018937:Hepatitis C Antibodies / Q000032:analysis; D019698:Hepatitis C, Chronic / Q000150:complications*; D006801:Humans; D007501:Iron / Q000008:administration & dosage* / Q000378:metabolism / Q000627:therapeutic use; D007676:Kidney Failure, Chronic / Q000378:metabolism / Q000628:therapy; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011994:Recombinant Proteins; D006435:Renal Dialysis; D013997:Time Factors
chemical_list: D018937:Hepatitis C Antibodies; D011994:Recombinant Proteins; D004921:Erythropoietin; D002097:C-Reactive Protein; D007501:Iron