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Effect of Vitamin E Dialyzer Membrane on Anemia in Hemodialysis Patients

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Red blood cell (RBC) survival in patients on chronic maintenance hemodialysis (HD) has been reported to be shortened due to the oxidative damage of RBC membrane. The use of antioxidants might help in the control of anemia and reduce the erythropoietin (EPO) dose needed. Objective: 

The objective was to determine the effects of vitamin E-bonded dialyzer membrane (VEM) on anemia and EPO requirements in chronic HD patients. Patients and methods: 

We prospectively studied 19 stable patients on HD (8 males, age 58.47, range 31–76 years) who were shifted from other dialyzer membranes to VEM for 6 months. At baseline they were given a mean dose of EPO of 90.6 ± 51 U kg–1 BW–1 week–1. Clinical data, dry body weight corrected pre-dialysis RBC, hemoglobin, reticulocytes, serum iron and ferritin, complete biochemistry, iPTH, and CRP were studied at 3 and 6 months, while therapy scheme was reevaluated monthly. Results: 

A significant rise, compared to the baseline, was found in hemoglobin and in RBC at 3 months of treatment (12.44 ± 1.16 g/dL vs. 11.2 ± 1.2 g/dL, p = 0.002; and 4.01 ± 0.53 × 106/L vs. 3.64 ± 0.5 × 106/L, p < 0.05) and at the end of follow-up (12.17 ± 1.33 g/dL vs. 11.2 ± 1.2 g/dL, p < 0.05; and 4.03 ± 0.53 × 106/L vs. 3.64 ± 0.5 × 106/L, p < 0.05). No significant change in serum iron and ferritin, reticulocytes, EPO dose used, iPTH, Kt/V, or CRP was found at the end of follow-up compared to the baseline (68.8 ± 17 mg/dL vs. 67.9 ± 18 mg/dL, p = NS; 421 ± 296 mg/dL vs. 478 ± 359 mg/dL, p = NS; 3.76 ± 0.89 × 104/L vs. 3.82 ± 0.78 × 104/L, p = NS; 90.2 ± 53 U kg–1 BW–1 week–1 vs. 90.6 ± 51 U kg–1 BW–1 week–1, p = NS; 157 ± 43 pg/dL vs. 148 ± 56 pg/dL, p = NS; 1.21 ± 0.22 vs. 1.2 ± 0.17, p = NS; 7.15 ± 5.42 mg/L vs. 15.38 ± 29.8 mg/L, p = NS, respectively). Conclusions: 

Despite the small number of patients and the short time interval of treatment, an antioxidant effect of VEM apparently achieved early a better control of anemia in HD patients.
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Document Type: Research Article

Affiliations: Department of Nephrology, Hippokratio General Hospital, Thessaloniki, Greece.

Publication date: 2004-01-01

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