rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
1997-5-15
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pubmed:abstractText |
The presence of functional endothelin ETB receptors was investigated in rat isolated mesenteric resistance arteries. Neither endothelin-3 (0.1-100 nM) nor the endothelin ETB selective agonists sarafotoxin S6c and BQ 3020 (both 1-100 nM) induced any measurable hyperpolarization or relaxation in stimulated (alpha 1-adrenoceptor agonist; phenylephrine) or unstimulated arteries. In both cases, the subsequent addition of acetylcholine (1 microM) hyperpolarized the membrane potential by 10-20 mV and totally reversed any contraction which was present. These results indicate that the endothelin ETB-mediated vasodilatation observed in the intact mesenteric bed does not reflect hyperpolarization of smooth muscle cells in resistance arteries arising from the mesenteric artery.
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pubmed:grant |
|
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 |
Dec
|
pubmed:issn |
0014-2999
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pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
27
|
pubmed:volume |
318
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
89-92
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pubmed:dateRevised |
2009-9-29
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pubmed:meshHeading |
pubmed-meshheading:9007517-Animals,
pubmed-meshheading:9007517-Endothelin-3,
pubmed-meshheading:9007517-Endothelins,
pubmed-meshheading:9007517-Male,
pubmed-meshheading:9007517-Membrane Potentials,
pubmed-meshheading:9007517-Mesenteric Arteries,
pubmed-meshheading:9007517-Muscle, Smooth, Vascular,
pubmed-meshheading:9007517-Muscle Contraction,
pubmed-meshheading:9007517-Muscle Relaxation,
pubmed-meshheading:9007517-Peptide Fragments,
pubmed-meshheading:9007517-Rats,
pubmed-meshheading:9007517-Rats, Sprague-Dawley,
pubmed-meshheading:9007517-Rats, Wistar,
pubmed-meshheading:9007517-Receptors, Endothelin,
pubmed-meshheading:9007517-Vasoconstrictor Agents,
pubmed-meshheading:9007517-Viper Venoms
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pubmed:year |
1996
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pubmed:articleTitle |
Lack of endothelin ETB receptor-mediated smooth muscle hyperpolarization in rat mesenteric resistance arteries.
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pubmed:affiliation |
Department of Pharmacology, University of Bristol, University Walk, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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