Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1994-9-1
pubmed:abstractText
To investigate the relaxatory effect and mode of action of substance P in the human umbilical artery, ring segments of the artery were suspended in organ baths to record the circular motor activity. Substance P induced a significant relaxation in segments with intact endothelium pre-contracted by potassium or 5-hydroxytryptamine. Segments devoid of their endothelium failed to relax when challenged with substance P. The relaxation induced by substance P was inhibited by the cyclo-oxygenase antagonist indomethacin, while the nitric oxide-synthetase inhibitor L-NG-monomethyl-arginine was without effect. These findings suggest that the relaxatory effect of substance P in the human umbilical artery is dependent on an intact endothelium. In contrast to the case in most other vessels, the relaxation is not mediated via the release of endothelium-derived relaxing factor, but seems to be dependent on prostanoid synthesis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0268-1161
pubmed:author
pubmed:issnType
Print
pubmed:volume
9
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
733-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Endothelium-dependent relaxation to substance P in human umbilical artery is mediated via prostanoid synthesis.
pubmed:affiliation
Department of Obstetrics and Gynaecology at Malmö, University of Lund, General Hospital, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't