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Gómez R, Núñez L, Vaquero M, Amorós I, Barana A, de Prada T, Macaya C, Maroto L, Rodríguez E, Caballero R, López-Farré A, Tamargo J, Delpón E

Nitric oxide inhibits Kv4.3 and human cardiac transient outward potassium current (Ito1).

Cardiovasc. Res.. 2008 Dec;80(3):375-84, PMID: 18678642

Chronic atrial fibrillation (CAF) is characterized by a shortening of the plateau phase of the action potentials (AP) and a decrease in the bioavailability of nitric oxide (NO). In this study, we analysed the effects of NO on Kv4.3 (I(Kv4.3)) and on human transient outward K(+) (I(to1)) currents as well as the signalling pathways responsible for them. We also analysed the expression of NO synthase 3 (NOS3) in patients with CAF.

CARDIAC & CARDIOVASCULAR SYSTEMS

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