Linked Life Data

2807608

Source:http://linkedlifedata.com/resource/pubmed/id/2807608

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1989-12-6
pubmed:abstractText
Previous attempts to define the etiology of coronary arterial spasm have been focused on mechanisms such as autonomic nervous dysfunction and/or enhanced platelet activation. In the present study, humoral regulation was investigated in patients with vasospastic angina and scintigraphically documented transient myocardial perfusion abnormalities after a peripheral cold pressor test. Serial changes in angiotensin II, epi- and norepinephrine as well as thromboxane B2 (the stable derivate of thromboxane A2), and malondialdehyde were determined at baseline (I), immediately after 5 minutes cold water hand immersion (II), and following 10 minutes recovery (III). Angiotensin II and epinephrine remained unchanged during observation (I vs II, II vs III: P = NS). Norepinephrine was elevated after cold (I vs II: P less than 0.001) and normalized after 10 minutes (I vs III: P = ns). Thromboxane B2 and malondialdehyde increased continuously (I vs III: P less than 0.05 and I vs III: P less than 0.002, respectively). Further radiothin-layer chromatography results indicate an activation of platelet function during myocardial ischemia. Our results do not establish a cause-effect relationship but, together with other evidence, they may suggest that thromboxane A2 is unlikely to be the cause of spasm. It might, however, play an important role in the maintenance of vasoconstriction.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0167-5273
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
199-205
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Humoral regulation during cold-induced coronary arterial spasm.
pubmed:affiliation
University of Vienna, Department of Cardiology, Austria.
pubmed:publicationType
Journal Article