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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
1997-1-24
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pubmed:abstractText |
The effect of salicylaldoxime, 2-(OH)C6H4CH = NOH, on the resting membrane potential and action potential characteristics was studied using isolated right ventricular strips from rat heart. Salicylaldoxime (1-3 mM) reversibly hyperpolarized the cells, increased action potential amplitude, decreased the maximal rate of rise (Vmax) and prolonged duration. The prolongation of the action potential produced by 1 mM salicyaldoxime could not be reversed with isoprenaline (10 microM). Salicyalaldoxime (0.3-1 mM) had no effect on the Ca(2+)-dependent slow action potential for periods up to 60 min. Initial exposure to 3 mM salicylaldoxime produced no changes in the slow action potential, but after 30 min. there was a gradual reduction in amplitude. This effect was completely reversible within 10-15 min. of washout. These data suggest that salicyaladoxime can block Na+, K+ and Ca2+ currents in rat cardiac muscle. Furthermore, it appears that the slow inward Ca2+ current, as measured by the slow action potential, may be sensitive to a dephoshorylating action of this oxime.
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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 |
Dec
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pubmed:issn |
0901-9928
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
77
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
386-90
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:8835364-Action Potentials,
pubmed-meshheading:8835364-Animals,
pubmed-meshheading:8835364-Dose-Response Relationship, Drug,
pubmed-meshheading:8835364-Electrophysiology,
pubmed-meshheading:8835364-Heart Ventricles,
pubmed-meshheading:8835364-Male,
pubmed-meshheading:8835364-Membrane Potentials,
pubmed-meshheading:8835364-Oximes,
pubmed-meshheading:8835364-Rats
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pubmed:year |
1995
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pubmed:articleTitle |
Multiple effects of salicylaldoxime on rat cardiac action potentials.
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pubmed:affiliation |
Department of Physical Sciences, University of Oulu, Finland.
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pubmed:publicationType |
Journal Article
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