Recombinant erythropoietin in humans has a prolonged effect on circulating erythropoietin isoform distribution

The membrane-assisted isoform immunoassay (MAIIA) quantitates erythropoietin (EPO) isoforms as percentages of migrated isoforms (PMI). We evaluated the effect of recombinant human EPO (rhEPO) on the distribution of EPO isoforms in plasma in a randomized, placebo-controlled, double-blinded, cross-ove...

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Veröffentlicht in:PloS one 2014-10, Vol.9 (10), p.e110903-e110903
Hauptverfasser: Aachmann-Andersen, Niels Jacob, Just Christensen, Søren, Lisbjerg, Kristian, Oturai, Peter, Meinild-Lundby, Anne-Kristine, Holstein-Rathlou, Niels-Henrik, Lundby, Carsten, Vidiendal Olsen, Niels
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container_title PloS one
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creator Aachmann-Andersen, Niels Jacob
Just Christensen, Søren
Lisbjerg, Kristian
Oturai, Peter
Meinild-Lundby, Anne-Kristine
Holstein-Rathlou, Niels-Henrik
Lundby, Carsten
Vidiendal Olsen, Niels
description The membrane-assisted isoform immunoassay (MAIIA) quantitates erythropoietin (EPO) isoforms as percentages of migrated isoforms (PMI). We evaluated the effect of recombinant human EPO (rhEPO) on the distribution of EPO isoforms in plasma in a randomized, placebo-controlled, double-blinded, cross-over study. 16 healthy subjects received either low-dose Epoetin beta (5000 IU on days 1, 3, 5, 7, 9, 11 and 13); high-dose Epoetin beta (30.000 IU on days 1, 2 and 3 and placebo on days 5, 7, 9, 11 and 13); or placebo on all days. PMI on days 4, 11 and 25 was determined by interaction of N-acetyl glucosamine with the glycosylation dependent desorption of EPO isoforms. At day 25, plasma-EPO in both rhEPO groups had returned to values not different from the placebo group. PMI with placebo, reflecting the endogenous EPO isoforms, averaged 82.5 (10.3) % (mean (SD)). High-dose Epoetin beta decreased PMI on days 4 and 11 to 31.0 (4.2)% (p
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We evaluated the effect of recombinant human EPO (rhEPO) on the distribution of EPO isoforms in plasma in a randomized, placebo-controlled, double-blinded, cross-over study. 16 healthy subjects received either low-dose Epoetin beta (5000 IU on days 1, 3, 5, 7, 9, 11 and 13); high-dose Epoetin beta (30.000 IU on days 1, 2 and 3 and placebo on days 5, 7, 9, 11 and 13); or placebo on all days. PMI on days 4, 11 and 25 was determined by interaction of N-acetyl glucosamine with the glycosylation dependent desorption of EPO isoforms. At day 25, plasma-EPO in both rhEPO groups had returned to values not different from the placebo group. PMI with placebo, reflecting the endogenous EPO isoforms, averaged 82.5 (10.3) % (mean (SD)). High-dose Epoetin beta decreased PMI on days 4 and 11 to 31.0 (4.2)% (p&lt;0.00001) and 45.2 (7.3)% (p&lt;0.00001). Low-dose Epoetin beta decreased PMI on days 4 and 11 to 46.0 (12.8)% (p&lt;0.00001) and 46.1 (10.4)% (p&lt;0.00001). In both rhEPO groups, PMI on day 25 was still decreased (high-dose Epoetin beta: 72.9 (19.4)% (p=0.029); low-dose Epoetin beta: 73.1 (17.8)% (p=0.039)). In conclusion, Epoetin beta leaves a footprint in the plasma-EPO isoform pattern. 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In both rhEPO groups, PMI on day 25 was still decreased (high-dose Epoetin beta: 72.9 (19.4)% (p=0.029); low-dose Epoetin beta: 73.1 (17.8)% (p=0.039)). In conclusion, Epoetin beta leaves a footprint in the plasma-EPO isoform pattern. MAIIA can detect changes in EPO isoform distribution up til at least three weeks after administration of Epoetin beta even though the total EPO concentration has returned to normal.</description><subject>Adult</subject><subject>Biology and Life Sciences</subject><subject>Blood pressure</subject><subject>Body mass index</subject><subject>Change detection</subject><subject>Chromatography</subject><subject>Cross-Over Studies</subject><subject>Erythropoietin</subject><subject>Erythropoietin - administration &amp; dosage</subject><subject>Erythropoietin - blood</subject><subject>Erythropoietin - genetics</subject><subject>Glucosamine</subject><subject>Glycoproteins</subject><subject>Glycosylation</subject><subject>Humans</subject><subject>Immunoassay</subject><subject>Isoforms</subject><subject>Lectins</subject><subject>Male</subject><subject>Medicine and Health Sciences</subject><subject>Methods</subject><subject>Neurosciences</subject><subject>Pharmacology</subject><subject>Physiology</subject><subject>Protein Isoforms - blood</subject><subject>Protein Isoforms - genetics</subject><subject>Recombinant erythropoietin</subject><subject>Recombinant Proteins - administration &amp; 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We evaluated the effect of recombinant human EPO (rhEPO) on the distribution of EPO isoforms in plasma in a randomized, placebo-controlled, double-blinded, cross-over study. 16 healthy subjects received either low-dose Epoetin beta (5000 IU on days 1, 3, 5, 7, 9, 11 and 13); high-dose Epoetin beta (30.000 IU on days 1, 2 and 3 and placebo on days 5, 7, 9, 11 and 13); or placebo on all days. PMI on days 4, 11 and 25 was determined by interaction of N-acetyl glucosamine with the glycosylation dependent desorption of EPO isoforms. At day 25, plasma-EPO in both rhEPO groups had returned to values not different from the placebo group. PMI with placebo, reflecting the endogenous EPO isoforms, averaged 82.5 (10.3) % (mean (SD)). High-dose Epoetin beta decreased PMI on days 4 and 11 to 31.0 (4.2)% (p&lt;0.00001) and 45.2 (7.3)% (p&lt;0.00001). Low-dose Epoetin beta decreased PMI on days 4 and 11 to 46.0 (12.8)% (p&lt;0.00001) and 46.1 (10.4)% (p&lt;0.00001). In both rhEPO groups, PMI on day 25 was still decreased (high-dose Epoetin beta: 72.9 (19.4)% (p=0.029); low-dose Epoetin beta: 73.1 (17.8)% (p=0.039)). In conclusion, Epoetin beta leaves a footprint in the plasma-EPO isoform pattern. MAIIA can detect changes in EPO isoform distribution up til at least three weeks after administration of Epoetin beta even though the total EPO concentration has returned to normal.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25335123</pmid><doi>10.1371/journal.pone.0110903</doi><oa>free_for_read</oa></addata></record>
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subjects Adult
Biology and Life Sciences
Blood pressure
Body mass index
Change detection
Chromatography
Cross-Over Studies
Erythropoietin
Erythropoietin - administration & dosage
Erythropoietin - blood
Erythropoietin - genetics
Glucosamine
Glycoproteins
Glycosylation
Humans
Immunoassay
Isoforms
Lectins
Male
Medicine and Health Sciences
Methods
Neurosciences
Pharmacology
Physiology
Protein Isoforms - blood
Protein Isoforms - genetics
Recombinant erythropoietin
Recombinant Proteins - administration & dosage
Recombinant Proteins - blood
Recombinant Proteins - genetics
Studies
title Recombinant erythropoietin in humans has a prolonged effect on circulating erythropoietin isoform distribution
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