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Subcutaneous administration of brain natriuretic peptide in experimental heart failure.

Abstract：

OBJECTIVES:The objective of this investigation was to define for the first time the cardiorenal and humoral actions of repeated short-term administration of subcutaneous (SQ) brain natriuretic peptide (BNP) administration during the evolution of experimental heart failure. BACKGROUND:The rationale of this study was based on BNP as a vasodilating, natriuretic, renin-inhibiting and lusitropic peptide of cardiac origin. METHODS:First, we defined the cardiorenal and humoral responses to acute low and high dose (5 microg/kg or 25 microg/kg) of SQBNP in experimental heart failure to establish the acute efficacy of an SQ delivery. Second, we characterized the response to 10 days of repeated short-term administration of BNP during the evolution of experimental heart failure produced by rapid ventricular pacing. RESULTS:Plasma BNP and 3',5'-cyclic guanosine monophosphate rapidly increased and peaked at 30 min after acute SQBNP administration with increases in urinary sodium excretion, urine flow and renal blood flow in association with reductions in cardiac filling pressures. After 10 days of repeated short-term administration of SQBNP, cardiac output was increased and systemic vascular resistance and pulmonary capillary wedge pressure were decreased, as compared with untreated dogs with heart failure. CONCLUSIONS:This study demonstrated for the first time that repeated short-term administration of SQ BNP administration for 10 days during the evolution of left ventricular dysfunction in a canine model results in an improvement in cardiovascular hemodynamics. This investigation supports a potential novel strategy for the chronic administration of BNP in the therapeutics of heart failure.

journal_name

J Am Coll Cardiol

journal_title

Journal of the American College of Cardiology

authors

Chen HH,Grantham JA,Schirger JA,Jougasaki M,Redfield MM,Burnett JC Jr

doi

10.1016/s0735-1097(00)00911-6

subject

Has Abstract

pub_date

2000-11-01 00:00:00

pages

1706-12

issue

5

eissn

0735-1097

issn

1558-3597

pii

S0735-1097(00)00911-6

journal_volume

36

pub_type

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