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Updated: May 5, 2026

Lentiviral-mediated Knockdown During Ex Vivo Erythropoiesis of Human Hematopoietic Stem Cells
Published on: July 16, 2011
Recombinant human erythropoietin treatment in pre-dialysis patients. A double-blind placebo-controlled trial
V S Lim1, R L DeGowin, D Zavala
1University of Iowa College of Medicine, Iowa City.
Study Objective:
To determine the efficacy and safety of recombinant human erythropoietin (r-HuEPO) in predialysis renal patients.
Design:
Randomized, double-blind, placebo-controlled trial for 8 weeks.
Setting:
Inpatient and outpatient facility in the Clinical Research Center of a university-based hospital.
Patients:
Fourteen adult subjects with renal insufficiency (mean serum creatinine, 473 mumol/L +/- 61 [6.2 +/- 0.8 mg/dL]) and anemia (mean hematocrit, 0.27 +/- 0.01).
Interventions:
Recombinant human erythropoietin, 50, 100, or 150 IU/kg body weight or placebo given intravenously three times per week.
Measurements And Main Results:
Subjects who received active r-HuEPO showed a dose-dependent rise in hematocrit; mean hematocrit increased 41% from 0.27 +/- 0.01 to 0.38 +/- 0.01. At the same time, erythrocyte mass rose 43% from 13.7 +/- 0.6 mL/kg in the baseline state to 19.6 +/- 1.0 mL/kg after treatment. Maximal oxygen consumption during exercise increased 9% from 16.0 mL/min.kg +/- 1.8 to 17.5 mL/min.kg +/- 1.9.
Conclusions:
Recombinant human erythropoietin is effective and safe in ameliorating the anemia of pre-dialysis patients.
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