Journal
CIRCULATION-HEART FAILURE
Volume 1, Issue 1, Pages 17-24Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1161/CIRCHEARTFAILURE.107.740704
Keywords
heart failure; renin; angiotensin; pharmacology
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Funding
- Novartis
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Background-Loss of negative feedback inhibition of renin release during chronic treatment with an angiotensin-converting enzyme (ACE) inhibitor leads to a compensatory rise in renin secretion and downstream components of the renin-angiotensin-aldosterone (RAAS) cascade. This may overcome ACE inhibition but should be blocked by a direct renin inhibitor. We studied the effects of adding the direct renin inhibitor aliskiren to an ACE inhibitor in patients with heart failure. Methods and Results-Patients with New York Heart Association class II to IV heart failure, current or past history of hypertension, and plasma brain natriuretic peptide (BNP) concentration > 100 pg/mL who had been treated with an ACE inhibitor (or angiotensin receptor blocker) and P-blocker were randomized to 3 months of treatment with placebo (n=146) or aliskiren 150 mg/d (n=156). The primary efficacy outcome was the between-treatment difference in N-terminal pro-BNP (NT-proBNP). Patients' mean age was 68 years, mean ejection fraction was 31%, and mean +/- SD systolic blood pressure was 129 +/- 17.4 mm Hg. Sixty-two percent of the patients were in New York Heart Association functional class II, and 33% were taking an aldosterone antagonist. Plasma NT-proBNP rose by 762 +/- 6123 pg/mL with placebo and fell by 244 2025 pg/mL with aliskiren (P=0.0106). BNP and urinary (but not plasma) aldosterone were also reduced by aliskiren. Clinically important differences in blood pressure and biochemistry were not seen between aliskiren and placebo. Conclusions-Addition of aliskiren to an ACE inhibitor (or angiotensin receptor blocker) and beta-blocker had favorable neurohumoral effects in heart failure and appeared to be well tolerated. (Circ Heart Fail. 2008;1:17-24.)
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