Attenuated renal excretory response to atrial natriuretic peptide in congestive heart failure in man.

Abstract:

:The renal and hormonal effects of atrial natriuretic peptide given as a bolus injection (2.0 micrograms/kg) were studied in 12 patients with congestive heart failure before and after treatment with captopril for 4 weeks and in 13 healthy control subjects. Atrial natriuretic peptide caused a rise in urinary excretion of sodium and urinary flow in the controls, whereas no increases were observed in the patients. Both proximal and distal fractional reabsorption of sodium, as evaluated by the lithium clearance technique, decreased less in the patients than in the controls. Basal plasma concentrations of atrial natriuretic peptide and cyclic guanosine monophosphate (cGMP), and the basal urinary excretion of cGMP, were elevated in the patients. The increases in both plasma and urinary cGMP after administration of atrial natriuretic peptide were blunted in heart failure. Basal glomerular filtration rate and renal plasma flow were reduced, and filtration fraction increased, in the patients. A positive correlation (r = 0.958, P less than 0.01) was found between renal plasma flow and the relative increase in urinary excretion of sodium in the patients with heart failure. Treatment with captopril did not improve the natriuretic and diuretic effect of exogenous atrial natriuretic peptide, but resulted in an increase in filtration fraction after administration of atrial natriuretic peptide not present before captopril.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Int J Cardiol

authors

Eiskjaer H,Bagger JP,Danielsen H,Jensen JD,Jespersen B,Thomsen K,Pedersen EB

doi

10.1016/0167-5273(91)90153-g

subject

Has Abstract

pub_date

1991-10-01 00:00:00

pages

61-74

issue

1

eissn

0167-5273

issn

1874-1754

pii

0167-5273(91)90153-G

journal_volume

33

pub_type

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