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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2005-3-14
pubmed:abstractText
The possibility that the prostacyclin analogues AFP-07 and cicaprost relax saphenous vein preparations of pig, guinea-pig and rabbit by simultaneously activating prostanoid EP4 and IP (prostacyclin) receptors was investigated using the high-affinity EP4 antagonist GW 627368. The IP receptor system in each preparation was suppressed with the partial agonist taprostene. The results indicate that AFP-07 and cicaprost are moderately potent EP4 agonists on pig saphenous vein, but much weaker EP4 agonists on guinea-pig saphenous vein. GW 627368 did not antagonise AFP-07- and cicaprost-induced relaxation of rabbit saphenous vein, which contrasts with a previous study using the EP4 blocker AH 23848. However, treatment with taprostene was of less value due to poorer antagonism of the rabbit IP system; this may be related to the presence of a sensitive EP2 relaxant system. Relaxation of each preparation induced by the selective EP2 agonist ONO-AE1-259 was unaffected by GW 627368, with and without taprostene.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0952-3278
pubmed:author
pubmed:issnType
Print
pubmed:volume
72
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
289-99
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Investigation of the agonist activity of prostacyclin analogues on prostanoid EP4 receptors using GW 627368 and taprostene: evidence for species differences.
pubmed:affiliation
Department of Pharmacology, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong SAR, China. robert.l.jones@strath.ac.uk
pubmed:publicationType
Journal Article