Evidence map›Paper›PMID 25580431›Full record

ArticleBioMed research international2014

Iron as the key modulator of hepcidin expression in erythroid antibody-mediated hypoplasia.

J C Fernandes, P Garrido, S Ribeiro, P Rocha-Pereira, E Bronze-da-Rocha, L Belo, E Costa, F Reis, A Santos-Silva

Open access · hybridAbstract read
In one paragraph

Article in BioMed research international, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 32% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 6 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 1 country.

J C FernandesLaboratory of Pharmacology and Experimental Therapeutics, IBILI, Faculty of Medicine, University of Coimbra, . 3000-548 Coimbra, Portugal ; Institute for Molecular and Cellular Biology, University of Porto, 4150-180 Porto, Portugal.
P GarridoLaboratory of Pharmacology and Experimental Therapeutics, IBILI, Faculty of Medicine, University of Coimbra, . 3000-548 Coimbra, Portugal.
S RibeiroInstitute for Molecular and Cellular Biology, University of Porto, 4150-180 Porto, Portugal ; Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira No. 228, 4050-313 Porto, Portugal.
P Rocha-PereiraInstitute for Molecular and Cellular Biology, University of Porto, 4150-180 Porto, Portugal ; Research Centre in Health Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal.
E Bronze-da-RochaInstitute for Molecular and Cellular Biology, University of Porto, 4150-180 Porto, Portugal ; Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira No. 228, 4050-313 Porto, Portugal.
L BeloInstitute for Molecular and Cellular Biology, University of Porto, 4150-180 Porto, Portugal ; Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira No. 228, 4050-313 Porto, Portugal.
E CostaInstitute for Molecular and Cellular Biology, University of Porto, 4150-180 Porto, Portugal ; Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira No. 228, 4050-313 Porto, Portugal.
F ReisLaboratory of Pharmacology and Experimental Therapeutics, IBILI, Faculty of Medicine, University of Coimbra, . 3000-548 Coimbra, Portugal.
A Santos-SilvaInstitute for Molecular and Cellular Biology, University of Porto, 4150-180 Porto, Portugal ; Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira No. 228, 4050-313 Porto, Portugal.
Universidade do Porto · PTUniversity of Coimbra · PTUniversity of Beira Interior · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Erythroid hypoplasia (EH) is a rare complication associated with recombinant human erythropoietin (rHuEPO) therapies, due to development of anti-rHuEPO antibodies; however, the underlying mechanisms remain poorly clarified. Our aim was to manage a rat model of antibody-mediated EH induced by rHuEPO and study the impact on iron metabolism and erythropoiesis. Wistar rats treated during 9 weeks with a high rHuEPO dose (200 IU) developed EH, as shown by anemia, reduced erythroblasts, reticulocytopenia, and plasmatic anti-rHuEPO antibodies. Serum iron was increased and associated with mRNA overexpression of hepatic hepcidin and other iron regulatory mediators and downregulation of matriptase-2; overexpression of divalent metal transporter 1 and ferroportin was observed in duodenum and liver. Decreased EPO expression was observed in kidney and liver, while EPO receptor was overexpressed in liver. Endogenous EPO levels were normal, suggesting that anti-rHuEPO antibodies blunted EPO function. Our results suggest that anti-rHuEPO antibodies inhibit erythropoiesis causing anemia. This leads to a serum iron increase, which seems to stimulate hepcidin expression despite no evidence of inflammation, thus suggesting iron as the key modulator of hepcidin synthesis. These findings might contribute to improving new therapeutic strategies against rHuEPO resistance and/or development of antibody-mediated EH in patients under rHuEPO therapy.

Indexed as

Anemia, AplasticAnimalsAntibodiesErythropoiesisErythropoietinGene Expression RegulationHepcidinsHumansIronMembrane ProteinsRatsRats, WistarRecombinant ProteinsSerine EndopeptidasesAntibodiesErythropoietinHepcidinsIronmatriptase 2Membrane ProteinsRecombinant ProteinsSerine Endopeptidases

Identifiers

PMID25580431
PMCPMC4281449
OpenAlexW1995669574

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.