Document Detail


Effects of aging on neuroendocrine activation in subjects and patients in the presence and absence of heart failure with left ventricular systolic dysfunction.
MedLine Citation:
PMID:  8651095     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The neuroendocrine profile and echocardiographic features of 40 patients (81 +/- 1 years, means +/- standard error) with heart failure and impaired left ventricular systolic function were compared with those of an age-matched group of healthy subjects, 20 younger patients with heart failure (aged 58 +/- 1 years) and 15 younger healthy subjects. Normal elderly subjects had a neuroendocrine profile similar to that of healthy younger subjects apart from elevated plasma norepinephrine (958 +/- 84 vs 302 +/- 118 pg/ml; p< 0.001) and atrial natriuretic peptide ( 40 +/- 6 vs 28 +/- 5 pg/ml; p<0.05). Despite a similar severity of heart failure, elderly patients had smaller ventricular dimensions (left ventricular internal dimension in diastole 51 +/- 2 vs 69 +/- 3 mm;p<0.0001 and greater impairment of ventricular compliance using Doppler indexes. Plasma norepinephrine was higher (1,191 +/- 80 vs 620 +/- 67 ppg/ml; p<0.01), and plasma atrial natriuretic peptide, plasma active renin, and angiotensin II were lower in elderly patients than in the younger patients with heart failure. As functional capacity declines with age, elderly patients may have less severe cardiac dysfunction for any given level of functional impairment, and this may account for most of the differences in neuroendocrine activity with age. Age appears to be an important determinant of plasma norepinephrine and may be a confounding factor in interpreting the prognostic significance of this hormone.
Authors:
D P Dutka; I Olivotto; S Ward; C M Oakley; M Impallomeni; J G Cleland
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The American journal of cardiology     Volume:  77     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1996 Jun 
Date Detail:
Created Date:  1996-07-25     Completed Date:  1996-07-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1197-201     Citation Subset:  AIM; IM    
Affiliation:
Department of Medicine, Royal Postgraduate Medical School, Hammersmith Hospital, London, United Kingdom.
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Aging / physiology*
Atrial Natriuretic Factor / blood
Cardiac Output, Low / complications,  physiopathology*
Echocardiography
Humans
Middle Aged
Neurosecretory Systems / physiopathology*
Norepinephrine / blood
Renin-Angiotensin System / physiology*
Ventricular Dysfunction, Left / complications,  physiopathology*
Chemical
Reg. No./Substance:
51-41-2/Norepinephrine; 85637-73-6/Atrial Natriuretic Factor

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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