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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1983-7-15
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pubmed:abstractText |
In dispersed acini from guinea pig pancreas, replacing extracellular sodium by tetraethylammonium (1) abolished carbamylcholine-stimulated amylase secretion but did not alter the increase in amylase secretion caused by the C-terminal octapeptide of cholecystokinin, bombesin, ionophore A23187, vasoactive intestinal peptide or 8-bromoadenosine 3':5' monophosphate, (2) caused a parallel rightward shift in the dose-response curve for carbamylcholine-stimulated amylase secretion and (3) inhibited binding of N-[3H]methyl scopolamine to muscarinic cholinergic receptors. Detectable inhibition of carbamylcholine-stimulated amylase secretion and binding of N-[3H]methyl scopolamine occurred with 300 microM tetraethylammonium, and half-maximal inhibition of these functions occurred with 1-2 mM tetraethylammonium. Replacing extracellular sodium by Tris did not alter the stimulation of enzyme secretion caused by any secretagogue tested. These results indicate that the tetraethylammonium is a muscarinic cholinergic receptor antagonist and that enzyme secretion from pancreatic acini does not depend on extracellular sodium.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0006-3002
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
2
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pubmed:volume |
762
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
373-7
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6189525-Amylases,
pubmed-meshheading:6189525-Animals,
pubmed-meshheading:6189525-Dose-Response Relationship, Drug,
pubmed-meshheading:6189525-Guinea Pigs,
pubmed-meshheading:6189525-Male,
pubmed-meshheading:6189525-N-Methylscopolamine,
pubmed-meshheading:6189525-Pancreas,
pubmed-meshheading:6189525-Scopolamine Derivatives,
pubmed-meshheading:6189525-Tetraethylammonium Compounds
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pubmed:year |
1983
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pubmed:articleTitle |
The actions of tetraethylammonium on dispersed acini from guinea pig pancreas.
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pubmed:publicationType |
Journal Article,
In Vitro
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