Molecular physiology of cardiac repolarization

JM Nerbonne, RS Kass - Physiological reviews, 2005 - journals.physiology.org
The heart is a rhythmic electromechanical pump, the functioning of which depends on action
potential generation and propagation, followed by relaxation and a period of refractoriness …

Studying cardiac arrhythmias in the mouse—a reasonable model for probing mechanisms?

JM Nerbonne - Trends in cardiovascular medicine, 2004 - Elsevier
The normal mechanical functioning of the heart depends on proper electrical functioning,
reflected in the sequential activation of pacemaker cells, and the normal propagation of …

Transient outward potassium current, 'Ito', phenotypes in the mammalian left ventricle: underlying molecular, cellular and biophysical mechanisms

SP Patel, DL Campbell - The Journal of physiology, 2005 - Wiley Online Library
At least two functionally distinct transient outward K+ current (Ito) phenotypes can exist
across the free wall of the left ventricle (LV). Based upon their voltage‐dependent kinetics of …

Heterogeneous expression of repolarizing, voltage‐gated K+ currents in adult mouse ventricles

S Brunet, F Aimond, H Li, W Guo… - The Journal of …, 2004 - Wiley Online Library
Previous studies have documented the expression of four kinetically distinct voltage‐gated
K+ (Kv) currents, Ito, f, Ito, s, IK, slow and Iss, in mouse ventricular myocytes and …

Mechanisms of arrhythmias and conduction disorders in older adults

M Mirza, A Strunets, WK Shen, A Jahangir - Clinics in geriatric medicine, 2012 - Elsevier
Aging is associated with an increased prevalence of cardiac arrhythmias, which contribute to
higher morbidity and mortality in the elderly. The frequency of cardiac arrhythmias …

Accessory Kvβ1 Subunits Differentially Modulate the Functional Expression of Voltage-Gated K+ Channels in Mouse Ventricular Myocytes

F Aimond, SP Kwak, KJ Rhodes… - Circulation research, 2005 - Am Heart Assoc
Voltage-gated K+ (Kv) channel accessory (β) subunits associate with pore-forming Kv α
subunits and modify the properties and/or cell surface expression of Kv channels in …

Action potential duration determines sarcoplasmic reticulum Ca2+ reloading in mammalian ventricular myocytes

RA Bassani, J Altamirano, JL Puglisi… - The Journal of …, 2004 - Wiley Online Library
After sarcoplasmic reticulum (SR) Ca2+ depletion in intact ventricular myocytes, electrical
activity promotes SR Ca2+ reloading and recovery of twitch amplitude. In ferret, recovery of …

[HTML][HTML] Transient outward potassium current and Ca2+ homeostasis in the heart: beyond the action potential

RA Bassani - Brazilian Journal of Medical and Biological Research, 2006 - SciELO Brasil
Normal central nervous system development relies on accurate intrinsic cellular programs
as well as on extrinsic informative cues provided by extracellular molecules. Migration of …

Selective elimination of IK,slow1 in mouse ventricular myocytes expressing a dominant negative Kv1.5α subunit

H Li, W Guo, KA Yamada… - American Journal of …, 2004 - journals.physiology.org
Although previous studies have revealed a role for the voltage-gated K+ channel α-subunit
Kv1. 5 (KCNA5) in the generation of the 4-aminopyridine (4-AP)-sensitive component of …

Regulation of Kv4 channel expression in failing rat heart by the thioredoxin system

X Li, K Tang, B Xie, S Li… - American Journal of …, 2008 - journals.physiology.org
Redox imbalance elicited by oxidative stress contributes to pathogenic remodeling of ion
channels that underlies arrhythmogenesis and contractile dysfunction in the failing heart …