rdf:type |
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lifeskim:mentions |
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pubmed:issue |
3
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pubmed:dateCreated |
1992-9-30
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pubmed:abstractText |
1. In rat thoracic aorta, LP-805 (0.1-10 microM) caused the marked reduction of NE-induced maximum response and relaxed the low K+ (less than 35.9 mM)-induced contraction, in a concentration-dependent manner, but failed to relax the high K+ (65.9 mM)-induced contraction. 2. Glibenclamide (0.3-1 microM) caused a parallel shift of concentration-response curve produced by LP-805 for 25.9 mM K(+)-induced contraction and prevented the LP-805-induced reduction in maximum response evoked by NE in a concentration-dependent manner. 3. Glibenclamide (10 microM) prevented the LP-805 (10 microM)-induced decrease in cytosolic Ca2+ levels which was increased by 1 microM NE or 25.9 mM K+. 4. LP-805 (10 microM) increased basal 86Rb efflux, which was completely inhibited by 10 microM glibenclamide. 5. The results suggest that LP-805 causes a vasorelaxation as a consequence of the decrease in cytosolic Ca2+ levels due to the increase in K+ efflux via opening ATP-dependent K+ channels.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/8-tert-butyl-6,7-dihydropyrrolo(3,2-...,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium,
http://linkedlifedata.com/resource/pubmed/chemical/Fura-2,
http://linkedlifedata.com/resource/pubmed/chemical/Glyburide,
http://linkedlifedata.com/resource/pubmed/chemical/Norepinephrine,
http://linkedlifedata.com/resource/pubmed/chemical/Potassium,
http://linkedlifedata.com/resource/pubmed/chemical/Potassium Channels,
http://linkedlifedata.com/resource/pubmed/chemical/Pyrazoles,
http://linkedlifedata.com/resource/pubmed/chemical/Pyrimidines,
http://linkedlifedata.com/resource/pubmed/chemical/Rubidium Radioisotopes,
http://linkedlifedata.com/resource/pubmed/chemical/Vasodilator Agents
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pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0306-3623
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
23
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
347-53
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1511846-Animals,
pubmed-meshheading:1511846-Aorta, Thoracic,
pubmed-meshheading:1511846-Calcium,
pubmed-meshheading:1511846-Cytosol,
pubmed-meshheading:1511846-Fura-2,
pubmed-meshheading:1511846-Glyburide,
pubmed-meshheading:1511846-Male,
pubmed-meshheading:1511846-Muscle, Smooth, Vascular,
pubmed-meshheading:1511846-Muscle Contraction,
pubmed-meshheading:1511846-Norepinephrine,
pubmed-meshheading:1511846-Potassium,
pubmed-meshheading:1511846-Potassium Channels,
pubmed-meshheading:1511846-Pyrazoles,
pubmed-meshheading:1511846-Pyrimidines,
pubmed-meshheading:1511846-Rats,
pubmed-meshheading:1511846-Rats, Inbred Strains,
pubmed-meshheading:1511846-Rubidium Radioisotopes,
pubmed-meshheading:1511846-Vasodilator Agents
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pubmed:year |
1992
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pubmed:articleTitle |
Effects of LP-805, a novel vasorelaxant agent, a potassium channel opener, on rat thoracic aorta.
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pubmed:affiliation |
POLA Pharmaceutical R&D Laboratory, Yokohama, Japan.
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pubmed:publicationType |
Journal Article,
In Vitro
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