Antiarrhythmic and cardiac electrophysiological effects of SZV-270, a novel compound with combined Class I/B and Class III effects, in rabbits and dogs
Cardiovascular diseases are the leading causes of mortality. Sudden cardiac death is most commonly caused by ventricular fibrillation (VF). Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia and a major cause of stroke and heart failure. Pharmacological management of VF and AF...
Elmentve itt :
| Szerzők: | |
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2021
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| Sorozat: | CANADIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY
99 No. 1 |
| doi: | 10.1139/cjpp-2020-0412 |
| mtmt: | 31845012 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/20263 |
| LEADER | 02676nab a2200337 i 4500 | ||
|---|---|---|---|
| 001 | publ20263 | ||
| 005 | 20210311154559.0 | ||
| 008 | 210118s2021 hu o 0|| zxx d | ||
| 022 | |a 0008-4212 | ||
| 024 | 7 | |a 10.1139/cjpp-2020-0412 |2 doi | |
| 024 | 7 | |a 31845012 |2 mtmt | |
| 040 | |a SZTE Publicatio Repozitórium |b hun | ||
| 041 | |a zxx | ||
| 100 | 1 | |a Varga Richárd Sándor | |
| 245 | 1 | 0 | |a Antiarrhythmic and cardiac electrophysiological effects of SZV-270, a novel compound with combined Class I/B and Class III effects, in rabbits and dogs |h [elektronikus dokumentum] / |c Varga Richárd Sándor |
| 260 | |c 2021 | ||
| 300 | |a 89-101 | ||
| 490 | 0 | |a CANADIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY |v 99 No. 1 | |
| 520 | 3 | |a Cardiovascular diseases are the leading causes of mortality. Sudden cardiac death is most commonly caused by ventricular fibrillation (VF). Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia and a major cause of stroke and heart failure. Pharmacological management of VF and AF remains suboptimal due to limited efficacy of antiarrhythmic drugs and their ventricular proarrhythmic adverse effects. In this study, the antiarrhythmic and cardiac cellular electrophysiological effects of SZV-270, a novel compound, were investigated in rabbit and canine models. SZV-270 significantly reduced the incidence of VF in rabbits subjected to coronary artery occlusion/reperfusion, reduced the incidence of burst-induced AF in a tachypaced conscious canine model of AF. SZV-270 prolonged frequency corrected QT interval, lengthened action potential duration and effective refractory period in ventricular and atrial preparations and blocked IKr in isolated cardiomyocytes (Class III effects), reduced maximum rate of depolarization (Vmax) at cycle lengths smaller than 1000 ms in ventricular preparations (Class I/B effect). Importantly, SZV-270 did not provoke Torsades de Pointes arrhythmia in an anesthetized rabbit proarrhythmia model characterized by impaired repolarization reserve. In conclusion, SZV-270 with its combined Class I/B and III effects can prevent re-entry arrhythmias with reduced risk of provoking drug-induced Torsades de Pointes. | |
| 700 | 0 | 1 | |a Hornyik Tibor |e aut |
| 700 | 0 | 1 | |a Husti Zoltán |e aut |
| 700 | 0 | 1 | |a Kohajda Zsófia |e aut |
| 700 | 0 | 1 | |a Krajsovszky Gábor |e aut |
| 700 | 0 | 1 | |a Nagy Norbert |e aut |
| 700 | 0 | 1 | |a Jost Norbert László |e aut |
| 700 | 0 | 1 | |a Virág László |e aut |
| 700 | 0 | 1 | |a Tálosi László |e aut |
| 700 | 0 | 1 | |a Mátyus Péter |e aut |
| 700 | 0 | 1 | |a Varró András |e aut |
| 700 | 0 | 1 | |a Baczkó István |e aut |
| 856 | 4 | 0 | |u http://publicatio.bibl.u-szeged.hu/20263/1/VargaBaczkoCJPP2021.pdf |z Dokumentum-elérés |