Interactions between calcium‐induced arrhythmia triggers and the electrophysiological–anatomical substrate underlying the induction of atrial fibrillation

MA Colman, M Varela, RS MacLeod… - The Journal of …, 2024 - Wiley Online Library
Atrial fibrillation (AF) is the most common cardiac arrhythmia and is sustained by
spontaneous focal excitations and re‐entry. Spontaneous electrical firing in the pulmonary …

Computational models of atrial cellular electrophysiology and calcium handling, and their role in atrial fibrillation

J Heijman, P Erfanian Abdoust, N Voigt… - The Journal of …, 2016 - Wiley Online Library
The complexity of the heart makes an intuitive understanding of the relative contribution of
ion channels, transporters and signalling pathways to cardiac electrophysiology …

Ionic mechanisms of triggered activity in atrial cell models

M Varela, R Morgan, N Ghavami… - … in Cardiology 2014, 2014 - ieeexplore.ieee.org
Spontaneous electrical activity in the atria, primarily near the pulmonary veins (PVs), is
strongly linked with triggers for atrial fibrillation (AF). However, mechanisms of such …

Intracellular calcium dynamics and atrial fibrillation

CC Chou, PS Chen, SF Lin - Atrial Fibrillation: From Bench to Bedside, 2008 - Springer
Abstract Intracellular Ca 2+(Ca 1) dynamics plays an important role in the initiation and
maintenance of atrial fibrillation (AF). Specific intrinsic action potential properties and …

[HTML][HTML] A novel computational model of the rabbit atrial cardiomyocyte with spatial calcium dynamics

MR Vagos, H Arevalo, J Heijman, U Schotten… - Frontiers in …, 2020 - frontiersin.org
Models of cardiac electrophysiology are widely used to supplement experimental results
and to provide insight into mechanisms of cardiac function and pathology. The rabbit has …

[HTML][HTML] Arrhythmia mechanisms and spontaneous calcium release: Bi-directional coupling between re-entrant and focal excitation

MA Colman - PLoS computational biology, 2019 - journals.plos.org
Spontaneous sub-cellular calcium release events (SCRE) are conjectured to promote rapid
arrhythmias associated with conditions such as heart failure and atrial fibrillation: they can …

[HTML][HTML] Unifying principles of calcium wave propagation—insights from a three-dimensional model for atrial myocytes

R Thul, K Rietdorf, MD Bootman, S Coombes - Biochimica et Biophysica …, 2015 - Elsevier
Atrial myocytes in a number of species lack transverse tubules. As a consequence the
intracellular calcium signals occurring during each heartbeat exhibit complex spatio …

Evolution and pharmacological modulation of the arrhythmogenic wave dynamics in canine pulmonary vein model

MA Colman, M Varela, JC Hancox, H Zhang… - Europace, 2014 - academic.oup.com
Aims Atrial fibrillation (AF), the commonest cardiac arrhythmia, has been strongly linked with
arrhythmogenic sources near the pulmonary veins (PVs), but underlying mechanisms are …

[HTML][HTML] Persistence of pro-arrhythmic spatio-temporal calcium patterns in atrial myocytes: a computational study of ping waves

R Thul, S Coombes, MD Bootman - Frontiers in physiology, 2012 - frontiersin.org
Clusters of ryanodine receptors within atrial myocytes are confined to spatially separated
layers. In many species, these layers are not juxtaposed by invaginations of the plasma …

The multidimensional role of calcium in atrial fibrillation pathophysiology: mechanistic insights and therapeutic opportunities

S Nattel, D Dobrev - European heart journal, 2012 - academic.oup.com
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia, and its prevalence is
increasing with the ageing of the population. Presently available treatment options are far …