Recombinant human erythropoietin treatment protects the cardio-renal axis in a model of moderate chronic renal failure

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Ana Margarida Teixeira (Autor) Outra; Patricia Garrido (Autor) Outra; Paulo Santos (Autor) Outra; Rui Alves (Autor) Outra; Belmiro Parada (Autor) Outra; Elisio Costa (Autor) FFUP; Anabela Almeida (Autor) Outra; Edite Teixeira Lemos (Autor) Outra; Jose Sereno (Autor) Outra; Rui Pinto (Autor) Outra; Luis Belo (Autor) FFUP; Alice Santos Silva (Autor) FFUP; Frederico Teixeira (Autor) Outra; Flavio Reis (Autor) Outra

Revista

Título: Renal Failure

Vol. 32

Páginas: 1073-1080

ISSN: 0886-022X

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 8 Citações

Scopus - 10 Citações

Classificação Científica

FOS: Ciências médicas e da saúde > Medicina clínica

Outras Informações

ID Authenticus: P-003-CKX

DOI: 10.3109/0886022x.2010.509897

Abstract (EN): Chronic kidney disease (CKD) patients develop anemia because of the low kidney erythropoietin (EPO) production, thus promoting cardiovascular complications. The degree of renal insufficiency might determine the moment to start recombinant human erythropoietin (rhEPO) therapy, but the molecular basis for these options deserves better elucidation. This study aimed to clarify the cardio-renal effects of earlier rhEPO therapy in rats with moderate chronic renal failure (CRF). Four groups of rats were evaluated for 15 weeks (control; rhEPO - 50 IU/kg/week; CRF - 3/4 nephrectomy; CRF + rhEPO) to assess renal and hematology data, EPO levels, blood pressure, heart rate, peripheral catecholamines contents, serum-transforming growth factor-beta 1 (TGF-beta 1), kidney gene expression of EPO, Caspase 9 (Casp9), and vascular endothelial growth factor (Vegf). This model of moderate CRF showed moderate and corrected anemia, hypertension, tachycardia, sympathetic overactivity, and increased serum TGF-beta 1 content. The remnant kidney showed a proliferative profile, with hypertrophy, downregulated gene expression of EPO, and upregulated gene expression of Vegf and Casp9. rhEPO treatment promoted erythrocytosis and prevented tachycardia and catecholamines increment, with a rise of serum TGF-beta 1. Furthermore, the decreased kidney gene expression of EPO and the overexpression of Casp9 were prevented, demonstrating a renoprotective action on the remnant kidney. In conclusion, rhEPO therapy promotes a protective effect on the cardio-renal axis, which might be mainly attributed to its pro-proliferative and anti-apoptotic properties. These findings might recommend its use in earlier stages of CRF, acting as an erythropoiesis stimulating agent, to efficiently correct not only the anemia, one of the major complications in these patients, but also the succeeding adverse cardio-renal effects.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8