Targeting of Potassium Channels in Cardiac Arrhythmias

Shira Burg, Bernard Attali

Research output: Contribution to journalReview articlepeer-review

Abstract

Cardiomyocytes are endowed with a complex repertoire of ion channels, responsible for the generation of action potentials (APs), travelling waves of electrical excitation, propagating throughout the heart and leading to cardiac contractions. Cardiac AP waveforms are shaped by a striking diversity of K+ channels. The pivotal role of K+ channels in cardiac health and disease is underscored by the dramatic impact that K+ channel dysfunction has on cardiac arrhythmias. The development of drugs targeted to specific K+ channels is expected to provide an optimized approach to antiarrhythmic therapy. Here, we review the functional roles of cardiac potassium channels under normal and diseased states. We survey current antiarrhythmic drugs (AADs) targeted to voltage-gated and Ca2+-activated K+ channels and highlight future research opportunities.

Original languageEnglish
Pages (from-to)491-506
Number of pages16
JournalTrends in Pharmacological Sciences
Volume42
Issue number6
DOIs
StatePublished - Jun 2021

Keywords

  • CPVT
  • LQT
  • anti-arrhythmic drugs
  • arrhythmia
  • atrial fibrillation
  • potassium channel

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