Dofetilide effect on human atrial action potential under normal and atrial fibrillation conditions. In silico study

Catalina Tobón, S. Pérez, J. P. Ugarte, J. Saiz

Resultado de la investigación: Contribución a una conferenciaArtículoInvestigación

Resumen

© Springer Nature Singapore Pte Ltd. 2017. Atrial fibrillation is the most common sustained cardiac arrhythmia. Dofetilide is an antiarrhythmic drug for the treatment of chronic AF that specifically blocks the rapid component of the delayed rectifier potassium current IKr. Dofetilide prolongs the action potential duration and QT interval in a concentration-dependent fashion, therefore, the risk of QT prolongation is dose related. It is important to study the electrophysiological effects of dofetilide at different concentrations in human atrial cells. For this, we simulated the effects of dofetilide on human atrial cell and studied its effect on atrial action potential under normal conditions and during cAF. We developed a model of dofetilide effects on IKrand IKACh. Our results show that dofetilide blocks both currents in a fraction greater as the concentration increases, which results in an action potential duration lengthening. To our knowledge, this is the first work that has developed mathematical models of dofetilide effects on IKrand IKAChcurrents to study its effect on human atrial action potential.
Idioma originalInglés estadounidense
Páginas38-41
Número de páginas4
DOI
EstadoPublicada - 1 ene 2017
EventoIFMBE Proceedings -
Duración: 1 ene 2017 → …

Conferencia

ConferenciaIFMBE Proceedings
Período1/01/17 → …

Huella dactilar

Potassium
Mathematical models
Anti-Arrhythmia Agents
dofetilide

Citar esto

Tobón, Catalina ; Pérez, S. ; Ugarte, J. P. ; Saiz, J. / Dofetilide effect on human atrial action potential under normal and atrial fibrillation conditions. In silico study. Papel presentado en IFMBE Proceedings, .4 p.
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title = "Dofetilide effect on human atrial action potential under normal and atrial fibrillation conditions. In silico study",
abstract = "{\circledC} Springer Nature Singapore Pte Ltd. 2017. Atrial fibrillation is the most common sustained cardiac arrhythmia. Dofetilide is an antiarrhythmic drug for the treatment of chronic AF that specifically blocks the rapid component of the delayed rectifier potassium current IKr. Dofetilide prolongs the action potential duration and QT interval in a concentration-dependent fashion, therefore, the risk of QT prolongation is dose related. It is important to study the electrophysiological effects of dofetilide at different concentrations in human atrial cells. For this, we simulated the effects of dofetilide on human atrial cell and studied its effect on atrial action potential under normal conditions and during cAF. We developed a model of dofetilide effects on IKrand IKACh. Our results show that dofetilide blocks both currents in a fraction greater as the concentration increases, which results in an action potential duration lengthening. To our knowledge, this is the first work that has developed mathematical models of dofetilide effects on IKrand IKAChcurrents to study its effect on human atrial action potential.",
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Dofetilide effect on human atrial action potential under normal and atrial fibrillation conditions. In silico study. / Tobón, Catalina; Pérez, S.; Ugarte, J. P.; Saiz, J.

2017. 38-41 Papel presentado en IFMBE Proceedings, .

Resultado de la investigación: Contribución a una conferenciaArtículoInvestigación

TY - CONF

T1 - Dofetilide effect on human atrial action potential under normal and atrial fibrillation conditions. In silico study

AU - Tobón, Catalina

AU - Pérez, S.

AU - Ugarte, J. P.

AU - Saiz, J.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - © Springer Nature Singapore Pte Ltd. 2017. Atrial fibrillation is the most common sustained cardiac arrhythmia. Dofetilide is an antiarrhythmic drug for the treatment of chronic AF that specifically blocks the rapid component of the delayed rectifier potassium current IKr. Dofetilide prolongs the action potential duration and QT interval in a concentration-dependent fashion, therefore, the risk of QT prolongation is dose related. It is important to study the electrophysiological effects of dofetilide at different concentrations in human atrial cells. For this, we simulated the effects of dofetilide on human atrial cell and studied its effect on atrial action potential under normal conditions and during cAF. We developed a model of dofetilide effects on IKrand IKACh. Our results show that dofetilide blocks both currents in a fraction greater as the concentration increases, which results in an action potential duration lengthening. To our knowledge, this is the first work that has developed mathematical models of dofetilide effects on IKrand IKAChcurrents to study its effect on human atrial action potential.

AB - © Springer Nature Singapore Pte Ltd. 2017. Atrial fibrillation is the most common sustained cardiac arrhythmia. Dofetilide is an antiarrhythmic drug for the treatment of chronic AF that specifically blocks the rapid component of the delayed rectifier potassium current IKr. Dofetilide prolongs the action potential duration and QT interval in a concentration-dependent fashion, therefore, the risk of QT prolongation is dose related. It is important to study the electrophysiological effects of dofetilide at different concentrations in human atrial cells. For this, we simulated the effects of dofetilide on human atrial cell and studied its effect on atrial action potential under normal conditions and during cAF. We developed a model of dofetilide effects on IKrand IKACh. Our results show that dofetilide blocks both currents in a fraction greater as the concentration increases, which results in an action potential duration lengthening. To our knowledge, this is the first work that has developed mathematical models of dofetilide effects on IKrand IKAChcurrents to study its effect on human atrial action potential.

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