Document Detail


Neuropeptide secretion in exercise.
MedLine Citation:
PMID:  10102676     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Plasma concentrations of atrial natriuretic peptide immunoreactivity (irANP) and brain natriuretic peptide immunoreactivity (irBNP) in elderly normal subjects (mean age 71.1, range 66-81 years, n = 10) were examined before (rest), during (peak of exercise) and after (3 min, 6 min) a treadmill exercise test (modified Bruce protocol). An attempt was also made to determine the effect of steady state exercise (30% and 50%) and posture (supine, sitting) on circulating levels of atrial natriuretic peptide and calcitonin gene-related peptide (CGRP) in man. The results suggest that exercise gives rise to increased levels of irANP and irCGRP, but not human BNP. The study also demonstrated a >40% rise in irCGRP and irANP levels at 50% steady state exercise compared with 30% steady state exercise. irCGRP was shown to decline in the upright position compared with the supine position, and irCGRP did not rise with exercise. Although ANP is normally stored in large concentration in the atria with much less in the ventricles and BNP is derived to a much greater extent from the ventricles, the differential release rate of these peptides may make BNP concentration a more sensitive indicator of left ventricular dysfunction than ANP. The observations obtained here also raise the possibility that the ANP system may not only help to eliminate intermittent overhydration, but also participate in the postural regulation of diuresis and natriuresis and perhaps even support the maintenance of excretory kidney function in the ageing subjects.
Authors:
G N Onuoha; D P Nicholls; A Patterson; T Beringer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Neuropeptides     Volume:  32     ISSN:  0143-4179     ISO Abbreviation:  Neuropeptides     Publication Date:  1998 Aug 
Date Detail:
Created Date:  1999-05-19     Completed Date:  1999-05-19     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8103156     Medline TA:  Neuropeptides     Country:  SCOTLAND    
Other Details:
Languages:  eng     Pagination:  319-25     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Royal Victoria Hospital, Belfast, Northern Ireland.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Aged, 80 and over
Aging
Atrial Natriuretic Factor / blood
Calcitonin Gene-Related Peptide / blood
Exercise / physiology*
Female
Humans
Middle Aged
Natriuretic Peptide, Brain / blood
Neuropeptides / secretion*
Posture
Supine Position
Chemical
Reg. No./Substance:
0/Neuropeptides; 114471-18-0/Natriuretic Peptide, Brain; 83652-28-2/Calcitonin Gene-Related Peptide; 85637-73-6/Atrial Natriuretic Factor

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


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