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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4823
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pubmed:dateCreated |
1987-11-4
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pubmed:abstractText |
In heart, glycolysis may be a preferential source of adenosine triphosphate (ATP) for membrane functions. In this study the patch-clamp technique was used to study potassium channels sensitive to intracellular ATP levels in permeabilized ventricular myocytes. Activation of these K+ channels has been implicated in marked cellular K+ loss leading to electrophysiological abnormalities and arrhythmias during myocardial ischemia. The results showed that glycolysis was more effective than oxidative phosphorylation in preventing ATP-sensitive K+ channels from opening. Experiments in excised inside-out patches suggested that key glycolytic enzymes located in the membrane or adjacent cytoskeleton near the channels may account for their preference for glycolytic ATP.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Adenosine Triphosphate,
http://linkedlifedata.com/resource/pubmed/chemical/Ion Channels,
http://linkedlifedata.com/resource/pubmed/chemical/Phosphoglycerate Kinase,
http://linkedlifedata.com/resource/pubmed/chemical/Potassium,
http://linkedlifedata.com/resource/pubmed/chemical/Pyruvate Kinase
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0036-8075
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
2
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pubmed:volume |
238
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
67-9
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:2443972-Adenosine Triphosphate,
pubmed-meshheading:2443972-Animals,
pubmed-meshheading:2443972-Coronary Disease,
pubmed-meshheading:2443972-Glycolysis,
pubmed-meshheading:2443972-Guinea Pigs,
pubmed-meshheading:2443972-Heart,
pubmed-meshheading:2443972-Ion Channels,
pubmed-meshheading:2443972-Myocardium,
pubmed-meshheading:2443972-Phosphoglycerate Kinase,
pubmed-meshheading:2443972-Potassium,
pubmed-meshheading:2443972-Pyruvate Kinase
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pubmed:year |
1987
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pubmed:articleTitle |
Glycolysis preferentially inhibits ATP-sensitive K+ channels in isolated guinea pig cardiac myocytes.
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pubmed:affiliation |
Department of Medicine, UCLA School of Medicine 90024.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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