Linked Life Data

2433298

Source:http://linkedlifedata.com/resource/pubmed/id/2433298

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1987-3-16
pubmed:abstractText
Isolated human basilar arteries were used in this study to evaluate the inhibitory effect of antithrombin III (AT III), thrombin, and alpha 2-macroglobulin (alpha 2-M) on contractions elicited by K+, serotonin (5-HT), prostaglandin (PG) D2, PGF2 alpha, and plasmin. alpha 2-M (0.5-1.0 mg/ml) failed to affect the contractions produced by contractile agonists significantly but did notably reduce the basal tone of the arteries. Thrombin (1 and 10 U/ml) reduced basal tone and significantly inhibited the contractions elicited by K+, PGF2 alpha, and plasmin. The relaxant effect of thrombin was abolished by procedures that destroy endothelium and by exposing the artery to thrombin for prolonged periods (tachyphylaxis). AT III (1-6 U/ml) reduced basal tone and significantly inhibited, in a concentration-dependent manner, the contractile responses to K+, 5-HT, PGD2, PGF2 alpha, and plasmin. In sharp contrast to thrombin, AT III did not induce tachyphylaxis nor was its vasorelaxant effect significantly reduced by destruction of the endothelium. The results show AT III to be a potent and nonspecific inhibitor of human cerebral arteries and support the hypothesis that AT III may contribute to the delay of cerebral vasospasm seen in patients who experience aneurysmal hemorrhage.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0271-678X
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
68-73
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Comparison of the inhibitory effects of antithrombin III, alpha 2-macroglobulin, and thrombin in human basilar arteries: relevance to cerebral vasospasm.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.