Ischemic heart failure enhances endogenous myocardial apelin and APJ receptor expression

• Autorzy: Atluri P , Morine K.J. , Liao G.P. , Panlilio C.M. , Berry M.F. , Hsu V.M. , Hiesinger W. , Cohen J.E. , Woo Y.I.
• Języki publikacji: EN

Abstrakty

EN

Apelin interacts with the APJ receptor to enhance inotropy. In heart failure, apelin-APJ coupling may provide a means of enhancing myocardial function. The alterations in apelin and APJ receptor concentrations with ischemic cardiomyopathy are poorly understood. We investigated the compensatory changes in endogenous apelin and APJ levels in the setting of ischemic cardiomyopathy. Male, Lewis rats underwent LAD ligation and progressed into heart failure over 6 weeks. Corresponding animals underwent sham thoracotomy as control. Six weeks after initial surgery, the animals underwent hemodynamic functional analysis in the presence of exogenous apelin-13 infusion and the hearts were explanted for western blot and enzyme immunoassay analysis. Western blot analysis of myocardial APJ concentration demonstrated increased APJ receptor protein levels with heart failure (1890750±133500 vs. 901600±143120 intensity units, n=8, p=0.00001). Total apelin protein levels increased with ischemic heart failure as demonstrated by enzyme immunoassay (12.0±4.6 vs. 1.0±1.2 ng/ml, n=5, p=0.006) and western blot (1579400±477733 vs. 943000±157600 intensity units, n=10, p=0.008). Infusion of apelin-13 significantly enhanced myocardial function in sham and failing hearts. We conclude that total myocardial apelin and APJ receptor levels increase in compensation for ischemic cardiomyopathy

Słowa kluczowe

EN

apelin; APJ receptor expression; interaction; ischaemic cardiomyopathy; APJ receptor; ischaemic heart failure

• Wydawca: -
• Czasopismo: Cellular and Molecular Biology Letters
• Rocznik: 2007
• Tom: 12
• Numer: 1
• Opis fizyczny: p.127-138,fig.,ref.

Twórcy

autor

Atluri P

• University of Pennsylvania, Silverstein 4, 3400 Spruce St., Philadelphia PA 19104, USA

autor

Morine K.J.

autor

Liao G.P.

autor

Panlilio C.M.

autor

Berry M.F.

autor

Hsu V.M.

autor

Hiesinger W.

autor

Cohen J.E.

autor

Woo Y.I.

Bibliografia

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