Linked Life Data

1651738

Source:http://linkedlifedata.com/resource/pubmed/id/1651738

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1991-9-24
pubmed:abstractText
To test the hypothesis that age differentially affects the natriuretic, hemodynamic, and humoral response to exogenous ANP, we studied seven young (Y, 20 to 39 years) and five old (O, 65 to 83 years) healthy, normotensive, nonobese men during infusion of synthetic human ANP1,28 at two different rates: 1) 0.05 microgram/kg/min (high dose) for 1 h and 2) 0.005 microgram/kg/min (low dose) for 1 h. Compared to young, the old had higher basal ANP levels (O = 142 +/- 41 v Y = 29 +/- 4 pmol/L, P less than .025), achieved higher plasma levels with low-dose infusion (O = 327 +/- 24 v Y = 155 +/- 37 pmol/L, P less than .001) and had a longer ANP half-life (O = 7.8 +/- 0.6 v Y = 4.3 +/- 0.6 min, P less than .001), suggesting decreased catabolism in the old compared to the young. Despite these age-related differences in ANP levels, there was no difference in urinary sodium or cyclic GMP excretion. After termination of the low-dose infusion, plasma ANP and urinary cGMP promptly returned to baseline levels. Despite this, a sustained natriuresis (2-fold above control) was observed for 3 h in both groups. Low-dose infusion was associated with sustained suppression of aldosterone with minimal hemodynamic changes. During high-dose infusions there was no difference in natriuresis or peak ANP levels between the two groups (O = 1299 +/- 93 v Y = 1140 +/- 54 pmol/L). In contrast to the low-dose infusion, the high-dose infusion produced a transient natriuresis lasting only for the duration of the infusion.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0895-7061
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
500-7
pubmed:dateRevised
2009-2-24
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Influence of age and dose on the end-organ responses to atrial natriuretic peptide in humans.
pubmed:affiliation
Charles A. Dana Research Institute, Harvard-Thorndike Laboratory, Beth Israel Hospital, Boston, Massachusetts.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, Research Support, U.S. Gov't, P.H.S., Controlled Clinical Trial