Repository logo
 
Publication

Iron-hepcidin dysmetabolism, anemia and renal hypoxia, inflammation and fibrosis in the remnant kidney rat model

2015Journal article Open access
Simple item page
dc.contributor.authorGarrido, Patrícia
dc.contributor.authorRibeiro, Sandra
dc.contributor.authorFernandes, João
dc.contributor.authorVala, Helena
dc.contributor.authorBronze-da-Rocha, Elsa
dc.contributor.authorRocha-Pereira, Petronila
dc.contributor.authorBelo, Luís
dc.contributor.authorCosta, Elísio
dc.contributor.authorSantos-Silva, Alice
dc.contributor.authorReis, Flávio
dc.date.accessioned2015-04-28T12:46:06Z
dc.date.available2015-04-28T12:46:06Z
dc.date.issued2015
dc.description.abstractAnemia is a common complication of chronic kidney disease (CKD) that develops early and its severity increases as renal function declines. It is mainly due to a reduced production of erythropoietin (EPO) by the kidneys; however, there are evidences that iron metabolism disturbances increase as CKD progresses. Our aim was to study the mechanisms underlying the development of anemia of CKD, as well as renal damage, in the remnant kidney rat model of CKD induced by 5/6 nephrectomy. This model of CKD presented a sustained degree of renal dysfunction, with mild and advanced glomerular and tubulointerstitial lesions. Anemia developed 3 weeks after nephrectomy and persisted throughout the protocol. The remnant kidney was still able to produce EPO and the liver showed an increased EPO gene expression. In spite of the increased EPO blood levels, anemia persisted and was linked to low serum iron and transferrin levels, while serum interleukin (IL)-6 and high sensitivity C-reactive protein (hs- CRP) levels showed the absence of systemic inflammation. The increased expression of duodenal ferroportin favours iron absorption; however, serum iron is reduced which might be due to iron leakage through advanced kidney lesions, as showed by tubular iron accumulation. Our data suggest that the persistence of anemia may result from disturbances in iron metabolism and by an altered activity/function of EPO as a result of kidney cell damage and a local inflammatory milieu, as showed by the increased gene expression of different inflammatory proteins in the remnant kidney. In addition, this anemia and the associated kidney hypoxia favour the development of fibrosis, angiogenesis and inflammation that may underlie a resistance to EPO stimuli and reduced iron availability. These findings might contribute to open new windows to identify putative therapeutic targets for this condition, as well as for recombinant human EPO (rHuEPO) resistance, which occurs in a considerable percentage of CKD patients.por
dc.description.sponsorshipThis work was supported by the Portuguese Foundation for Science and Technology (FCT), COMPETE-FEDER and POPH/FSE: PTDC/SAU-TOX/114253/2009, SFRH/BD/61020/2009, SFRH/BD/79875/2011, SFRH/BPD/81968/2011, PEst-C/SAU/UI3282/2011 and 2013, PEst-OE/CED/UI4016/2014 (CI&DETS) and ID/NEU/04539/2013 (CNC.IBILI). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.por
dc.identifier.citationPatrícia Garrido, Sandra Ribeiro, João Fernandes, Helena Vala, Elsa Bronze-da-Rocha, Petronila Rocha-Pereira, Luís Belo, Elísio Costa, Alice Santos-Silva and Flávio Reis (2015). Iron-hepcidin dysmetabolism, anemia and renal hypoxia, inflammation and fibrosis in the remnant kidney rat model. PLOS ONEPONE-D-14-44540R1. 2015; 10(4): e0124048: 24pppor
dc.identifier.doi10.1371/journal.pone.0124048
dc.identifier.urihttp://hdl.handle.net/10400.19/2784
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherMcGill Universitypor
dc.relation.ispartof4
dc.subjectAnemiapor
dc.subjectDysmetabolismpor
dc.subjectRenal Hypoxiapor
dc.subjectInflammationpor
dc.subjectFibrosispor
dc.titleIron-hepcidin dysmetabolism, anemia and renal hypoxia, inflammation and fibrosis in the remnant kidney rat modelpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage24 pppor
oaire.citation.titlePLoS ONEpor
oaire.citation.volume10por
person.familyNameVala Correia
person.givenNameHelena Maria
person.identifier.ciencia-id7A1E-E85E-FFA4
person.identifier.orcid0000-0001-6829-4867
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationcdc3d2e2-df06-40ed-8900-1ecbc8a06c8a
relation.isAuthorOfPublication.latestForDiscoverycdc3d2e2-df06-40ed-8900-1ecbc8a06c8a

Files

Collections

ESAV - DZERV - Artigo em revista científica, indexada ao WoS/Scopus