Linked Life Data

2705566

Source:http://linkedlifedata.com/resource/pubmed/id/2705566

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4 Pt 2
pubmed:dateCreated
1989-5-12
pubmed:abstractText
Vascular responses to many physiological stresses are abnormal in heart failure. Increased peripheral resistance and a reduction in the vasodilator response to exercise and ischemia are examples of this abnormal vascular control. Such abnormal vascular control in heart failure is a result of interplay between neural, hormonal, and local vascular factors. This study was designed to test the hypothesis that a specific local mechanism, endothelium-dependent relaxation to acetylcholine (ACh), is depressed in experimental heart failure. Experiments were performed on 11 purebred beagles. Experimental heart failure was induced by rapid ventricular pacing for approximately 30 days. Femoral artery diameter was measured by sonomicrometry, and dose-response relationships to ACh, norepinephrine (NE), and nitroglycerin (NTG) were done before and after inhibition of cyclooxygenase by indomethacin. Heart failure resulted in a significant depression of ACh relaxation at all concentrations. In dogs with heart failure, indomethacin enhanced the dilation response to low concentrations of ACh. Constriction to NE and dilation to NTG were unchanged by heart failure. These data demonstrate that in the canine femoral artery endothelium-dependent dilation to ACh is depressed in experimental heart failure. Depression of endothelium-dependent vasodilation represents one local mechanism for abnormal control of the vasculature in congestive heart failure.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0002-9513
pubmed:author
pubmed:issnType
Print
pubmed:volume
256
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
H962-7
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Heart failure depresses endothelium-dependent responses in canine femoral artery.
pubmed:affiliation
Department of Physiology, Michigan State University, East Lansing 48824-1101.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't