Inhibition of KCa2 Channels Decreased the Risk of Ventricular Arrhythmia in the Guinea Pig Heart During Induced Hypokalemia - Sophion

Inhibition of KCa2 Channels Decreased the Risk of Ventricular Arrhythmia in the Guinea Pig Heart During Induced Hypokalemia


Journal: Pharmacology of Ion Channels and Channelopathies
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Author(s): Jonas Goldin Diness, Lea Abildgaard, Sofia Hammami Bomholtz, Mark Alexander Skarsfeldt, Nils Edvardsson, Ulrik S. Sørensen, Morten Grunnet and Bo Hjorth Bentzen


Hypokalemia was associated with an increased incidence of VF, an effect that also seen in the presence of dofetilide. In comparison, the structurally and functionally different KCa2 channel inhibitors, ICA, AP14145, and AP30663 protected the heart from hypokalemia induced VF. These results support that KCa2 inhibition may be associated with a better safety and tolerability profile than dofetilide.

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