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Dadun > Depósito Académico > CIMA (Centro de Investigación Médica Aplicada) > Área de Ciencias Cardiovasculares > Cardiopatía hipertensiva > DA - CIMA - Cardiovasculares - Cardiopatía hipertensiva - Artículos de Revista >

Characterization of the protective effects of cardiotrophin-1 against non-ischemic death stimuli in adult cardiomyocytes
Authors: Lopez, N. (Natalia)
Diez, J. (Javier)
Fortuño, M.A. (María Antonia)
Keywords: Adult cardiomyocytes
Angiotensin II;
Cardiotrophin-1
Oxidative stress
Survival
Issue Date: 2005
Publisher: Elsevier
Publisher version: http://dx.doi.org/10.1016/j.cyto.2005.01.016
ISSN: 1043-4666
Citation: Lopez N, Diez J, Fortuño MA. Characterization of the protective effects of cardiotrophin-1 against non-ischemic death stimuli in adult cardiomyocytes. Cytokine 2005 Jun 7;30(5):282-292.
Abstract
The aim of this study was to investigate the cytoprotective effects of CT-1 against non-ischemic death stimuli in adult cardiomyocytes. Primary cultures of cardiomyocytes isolated from adult rats were stimulated with either angiotensin II (Ang II) or H(2)O(2) in the presence or absence of CT-1. Cell death was determined by trypan blue exclusion, cell viability by MTT assay and apoptosis by TUNEL-Annexin-V staining. Intracellular pathways were analyzed by the employment of chemical inhibitors and by the assessment of signalling intermediates phosphorylation by Western blot analysis. CT-1 reduced (p<0.01) total cell death and apoptosis induced by either Ang II or H(2)O(2), and increased (p<0.01) cell viability in cardiomyocytes exposed to these stimuli. These effects of CT-1 were abolished in the presence of antibodies specific for gp130 or LIFR and did not require RNA or protein synthesis. Both Wortmannin and PD98059 abolished protective effects of CT-1 against H(2)O(2), whereas only Wortmannin inhibited protection against Ang II. In both cases, Akt kinase activation and Bad phosphorylation were observed. These findings suggest that CT-1 protects adult cardiomyocytes against Ang II- and oxidative stress-induced cell death, via gp130/LIFR and by means of the PI3K/Akt and the p42/44 MAPK intracellular cascades.
Permanent link: http://hdl.handle.net/10171/19841
Appears in Collections:DA - CIMA - Servicios de apoyo - Biobanco - Artículos de revista
DA - CIMA - Cardiovasculares - Cardiopatía hipertensiva - Artículos de Revista

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