pubmed-article:8922743 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0034693 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0114771 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0441472 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0085862 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C1299583 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C1707455 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0456387 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0035124 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C1608386 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C1549571 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0074304 | lld:lifeskim |
pubmed-article:8922743 | lifeskim:mentions | umls-concept:C0171476 | lld:lifeskim |
pubmed-article:8922743 | pubmed:issue | 5 | lld:pubmed |
pubmed-article:8922743 | pubmed:dateCreated | 1997-3-10 | lld:pubmed |
pubmed-article:8922743 | pubmed:abstractText | 1. The antiarrhythmic and haemodynamic effects of three class III antiarrhythmic drugs, MS-551, sematilide and dofetilide, were examined in the coronary artery, ligation-reperfusion model of pentobarbitone-anaesthetized rats, a species deficient in functional cardiac IK. MS-551 is a non-selective potassium channel blocker, while both sematilide and dofetilide are selective delayed rectifier potassium (K) channel (IK) blockers. 2. Before coronary ligation, 3 and 10 mg kg-1 MS-551 decreased the heart rate by 6% (P < 0.01) and 12% (P < 0.01), and increased mean arterial pressure (MAP) by 14% (P < 0.05) and 33% (P < 0.01), respectively. Sematilide at 10 and 30 mg kg-1 also decreased the heart rate by 4% (P < 0.01) and 9% (P < 0.01), respectively, and the higher dose of 30 mg kg-1 decreased MAP by 29% (P < 0.01). Dofetilide, 1 mg kg-1, decreased the heart rate (P < 0.01), but had no significant effect on MAP. 3. The QT interval was increased by 10% (P < 0.01) and 31% (P < 0.01), when 3 and 10 mg kg-1 MS-551 were given. Sematilide and dofetilide had no effect on the QT interval. 4. Immediately after reperfusion, lethal ventricular fibrillation (VF) was induced in 80% of the saline group. MS-551 at 3 and 10 mg kg-1, reduced the incidence of lethal VF to 50% and 20% (P < 0.05). Neither dofetilide 1 mg kg-1 nor sematilide (10 and 30 mg kg-1) decreased the incidence of lethal VF (70%, 80% and 50%, respectively). None of the three drugs had any effect on the occurrence of reperfusion-induced VT or the total incidence of VF. However, 10 mg kg-1 MS-551 delayed the onset of reperfusion-induced VF (27 +/- 5 s compared with 12 +/- 2 s of the control group, P < 0.05). 5. In conclusion, in rats which are deficient in cardiac IK MS-551 prolonged the QT interval and reduced the incidence of sustained VF after reperfusion. Blockade of channels other than IK might participate in the defibrillatory effect of MS-551. Sematilide and dofetilide, which are selective IK blockers, did not increase the QT interval nor did they show antiarrhythmic effects Mechanisms other than K channel block may be involved in the different effects of the three drugs on blood pressure. | lld:pubmed |
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pubmed-article:8922743 | pubmed:language | eng | lld:pubmed |
pubmed-article:8922743 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:8922743 | pubmed:citationSubset | IM | lld:pubmed |
pubmed-article:8922743 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:8922743 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:8922743 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:8922743 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:8922743 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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pubmed-article:8922743 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:8922743 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:8922743 | pubmed:month | Nov | lld:pubmed |
pubmed-article:8922743 | pubmed:issn | 0007-1188 | lld:pubmed |
pubmed-article:8922743 | pubmed:author | pubmed-author:HashimotoKK | lld:pubmed |
pubmed-article:8922743 | pubmed:author | pubmed-author:TamuraKK | lld:pubmed |
pubmed-article:8922743 | pubmed:author | pubmed-author:ChenJJ | lld:pubmed |
pubmed-article:8922743 | pubmed:author | pubmed-author:KomoriSS | lld:pubmed |
pubmed-article:8922743 | pubmed:author | pubmed-author:MICC | lld:pubmed |
pubmed-article:8922743 | pubmed:issnType | Print | lld:pubmed |
pubmed-article:8922743 | pubmed:volume | 119 | lld:pubmed |
pubmed-article:8922743 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:8922743 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:8922743 | pubmed:pagination | 937-42 | lld:pubmed |
pubmed-article:8922743 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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pubmed-article:8922743 | pubmed:year | 1996 | lld:pubmed |
pubmed-article:8922743 | pubmed:articleTitle | IK independent class III actions of MS-551 compared with sematilide and dofetilide during reperfusion in anaesthetized rats. | lld:pubmed |
pubmed-article:8922743 | pubmed:affiliation | Department of Pharmacology, Yamanashi Medical University, Japan. | lld:pubmed |
pubmed-article:8922743 | pubmed:publicationType | Journal Article | lld:pubmed |
pubmed-article:8922743 | pubmed:publicationType | Comparative Study | lld:pubmed |