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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
|
pubmed:dateCreated |
1980-6-25
|
pubmed:abstractText |
The direct effect of protamine sulfate upon myocardial inotropism was studied using an isolated canine heart muscle preparation. Isometric force (F) was decreased to 87.6 +/- 1.2% of control values by a concentration of 50 x 10(-3) g/L protamine, which is approximately equal to the estimated serum concentration of protamine when administered clinically in doses of 4 mg/kg. The decrease in F was accompanied by a decrease in the maximum velocity of force development (dF/dt) but no alteration in time to peak force. Administration of the preservative of protamine sulfate did not alter F and dF/dt. This suggests that protamine produces a direct negative inotropic effect, mediated by a decrease in intensity but not by a decrease in duration of the active state.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Feb
|
pubmed:issn |
0003-2999
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
59
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
100-2
|
pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7189330-Animals,
pubmed-meshheading:7189330-Depression, Chemical,
pubmed-meshheading:7189330-Dogs,
pubmed-meshheading:7189330-Dose-Response Relationship, Drug,
pubmed-meshheading:7189330-Heart,
pubmed-meshheading:7189330-Myocardial Contraction,
pubmed-meshheading:7189330-Protamines
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pubmed:year |
1980
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pubmed:articleTitle |
A weak negative inotropic effect of protamine sulfate upon the isolated canine heart muscle.
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pubmed:publicationType |
Journal Article,
In Vitro
|