Linked Life Data

8467869

Source:http://linkedlifedata.com/resource/pubmed/id/8467869

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
1993-5-11
pubmed:abstractText
The roles of metabolites of arachidonic acid in spontaneous and agonist-induced acetylcholine release from a longitudinal muscle preparation with myenteric plexus of guinea-pig ileum were studied. Indomethacin significantly decreased both spontaneous acetylcholine release and its release induced by nicotine and substance P. We had found that prostaglandin E2 (PGE2) partly reversed this inhibition. We now found that a stable prostacyclin analog, OP-41483 at 100 nM, completely reversed the inhibition of acetylcholine release by indomethacin. On the other hand, PGD2, PGF2 alpha and ONO-11113, a thromboxane A2 analog, did not have any significant effect on the inhibition by indomethacin. OP-41483 had no effect on acetylcholine release induced by nicotine or substance P in the absence of indomethacin. To confirm the modulatory role of endogenous prostaglandins on acetylcholine release, we also studied the release of 6-keto-PGF1 alpha, a metabolite of prostacyclin, and PGE2 from longitudinal muscle preparations. The preparations released appreciable amounts of 6-keto-PGF1 alpha continuously during the experiments. Indomethacin inhibited release, while nicotine did not affect it so significantly. Our results suggest that endogenous prostacyclin modulates acetylcholine release from cholinergic nerve terminals in the myenteric plexus of guinea-pig ileum.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0014-2999
pubmed:author
pubmed:issnType
Print
pubmed:day
23
pubmed:volume
233
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
237-42
pubmed:dateRevised
2009-8-14
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Role of prostacyclin in acetylcholine release from myenteric plexus of guinea-pig ileum.
pubmed:affiliation
Department of Veterinary Pharmacology, College of Agriculture, University of Osaka Prefecture, Sakai, Japan.
pubmed:publicationType
Journal Article