title: Evaluation of the pharmacokinetics of two recombinant human erythropoietin preparations: epoetin zeta and epoetin alfa. 2nd Communication: A monocentric, double-blind, randomized, single dose, three-period crossover trial in healthy volunteers.
abstract: The subcutaneous bioavailability of a new recombinant erythropoietin preparation (epoetin zeta, CAS 604802-70-2) and the pharmacokinetic properties of this drug compared to a reference product (epoetin alfa, CAS 113427-24-0) were analyzed after a single intravenous bolus injection or subcutaneous injection of 10,000 IU in a three-period crossover design in 48 healthy volunteers. Peripheral venous blood samples were obtained pre-dose, and 0:05, 0:20, 0:40, 1:00, 1:20, 1:40, 2:00, 3:00, 4:00, 6:00, 8:00, 12:00, 24:00, 36:00, 48:00, and 72:00 h post dosing. Samples from 48 volunteers were analyzed by means of a specific immunoassay (ELISA). The systemic bioavailability of epoetin zeta after subcutaneous administration is approximately 24%. Comparison of both preparations showed nearly identical pharmacokinetic properties after subcutaneous administration. The usual bioequivalence limits were fulfilled for all relevant pharmacokinetic parameters.
authors.affiliation: University Hospital "Queen Giovanna", Sofia, Bulgaria.
authors.forename: Valentin
authors.initials: V
authors.lastname: Kirkov
authors.forename: Velislava
authors.initials: V
authors.lastname: Dimitrova
authors.forename: Marianne
authors.initials: M
authors.lastname: Siebert-Weigel
authors.forename: Michael
authors.initials: M
authors.lastname: Wolf-Pflugmann
authors.forename: Rossen
authors.initials: R
authors.lastname: Koytchev
authors.forename: Wolfram
authors.initials: W
authors.lastname: Richter
authors.forename: Angelika
authors.initials: A
authors.lastname: Bronn
authors.forename: Sacha
authors.initials: S
authors.lastname: Arsova
authors.forename: Arno
authors.initials: A
authors.lastname: Kromminga
mesh_terms: D000293:Adolescent; D000328:Adult; D019540:Area Under Curve; D002626:Chemistry, Pharmaceutical; D018592:Cross-Over Studies; D004311:Double-Blind Method; D004797:Enzyme-Linked Immunosorbent Assay; D000068817:Epoetin Alfa; D004921:Erythropoietin / Q000493:pharmacokinetics*; D005260:Female; D006207:Half-Life; D006397:Hematinics / Q000493:pharmacokinetics*; D006801:Humans; D007279:Injections, Subcutaneous; D008297:Male; D008875:Middle Aged; D011994:Recombinant Proteins
chemical_list: D006397:Hematinics; D011994:Recombinant Proteins; D004921:Erythropoietin; D000068817:Epoetin Alfa