Eplerenone enhances cardioprotective effects of standard heart failure therapy through matricellular proteins in hypertensive heart failure.

Abstract:

AIMS:The addition of an aldosterone receptor antagonist on top of current optimal therapy (based on angiotensin II inhibition) has demonstrated an important clinical benefit in heart failure patients with systolic dysfunction. Whether this finding also applies to heart failure patients with preserved systolic function is unknown. Therefore, we have studied the effect of adding eplerenone to standard pharmacological heart failure therapy (angiotensin-converting enzyme inhibitor/angiotensin receptor blocker and diuretic and β-blocker) in the progression of heart failure in spontaneously hypertensive heart failure (SHHF) rats. METHODS AND RESULTS:Two-month-old SHHF rats were randomized to receive no treatment (SHHF group), a standard heart failure therapy (quinapril-torasemide-carvedilol; ST-SHHF group), or the combination of eplerenone and standard heart failure therapy (Eple+ST-SHHF group) for 20 months. Untreated SHHF was characterized by progressive left ventricular hypertrophy, fibrosis, and myocardial contractile and relaxation abnormalities, leading to pulmonary congestion. Despite similar blood pressure control, the addition of eplerenone to standard heart failure therapy further prevented left ventricular hypertrophy, contractile and relaxation alterations, and pulmonary congestion than standard heart failure therapy alone. ST-SHHF and Eple + ST-SHHF rats showed similar inhibition of structural extracellular matrix proteins collagen I, collagen III and fibronectin and metalloproteinase (MMP)-2, MMP-7, MMP-12, and MMP-13. However, only the coadministration of eplerenone with standard heart failure therapy normalized the expression of matricellular proteins thrombospondin 1, tenascin C, periostin, and secreted protein acidic rich in cysteine/osteonectin to values comparable to normotensive rats. CONCLUSION:In a hypertensive heart failure rat model, the addition of eplerenone to conventional heart failure therapy further improves cardiac structural and functional parameters, delaying the progression of heart failure. These beneficial effects of eplerenone were associated with normalization of matricellular protein expression.

journal_name

J Hypertens

journal_title

Journal of hypertension

authors

Muñoz-Pacheco P,Ortega-Hernández A,Caro-Vadillo A,Casanueva-Eliceiry S,Aragoncillo P,Egido J,Fernández-Cruz A,Gómez-Garre D

doi

10.1097/HJH.0b013e328364abd6

subject

Has Abstract

pub_date

2013-11-01 00:00:00

pages

2309-18; discussion 2319

issue

11

eissn

0263-6352

issn

1473-5598

journal_volume

31

pub_type

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