The adhesion function of the sodium channel beta subunit (β1) contributes to cardiac action potential propagation

R Veeraraghavan, GS Hoeker, A Alvarez-Laviada… - Elife, 2018 - elifesciences.org
Computational modeling indicates that cardiac conduction may involve ephaptic coupling–
intercellular communication involving electrochemical signaling across narrow extracellular …

[HTML][HTML] The role of the gap junction perinexus in cardiac conduction: Potential as a novel anti-arrhythmic drug target

DT Hoagland, W Santos, S Poelzing… - Progress in biophysics …, 2019 - Elsevier
Cardiovascular disease remains the single largest cause of natural death in the United
States, with a significant cause of mortality associated with cardiac arrhythmias. Presently …

Intercalated disk nanoscale structure regulates cardiac conduction

N Moise, HL Struckman, C Dagher… - Journal of General …, 2021 - rupress.org
The intercalated disk (ID) is a specialized subcellular region that provides electrical and
mechanical connections between myocytes in the heart. The ID has a clearly defined …

Localization of Na+ channel clusters in narrowed perinexi of gap junctions enhances cardiac impulse transmission via ephaptic coupling: a model study

E Ivanovic, JP Kucera - The Journal of physiology, 2021 - Wiley Online Library
It has been proposed that when gap junctional coupling is reduced in cardiac tissue, action
potential propagation can be supported via ephaptic coupling, a mechanism mediated by …

Cellular size, gap junctions, and sodium channel properties govern developmental changes in cardiac conduction

MB Nowak, R Veeraraghavan, S Poelzing… - Frontiers in …, 2021 - frontiersin.org
Electrical conduction in cardiac ventricular tissue is regulated via sodium (Na+) channels
and gap junctions (GJs). We and others have recently shown that Na+ channels …

The conduction velocity-potassium relationship in the heart is modulated by sodium and calcium

DR King, M Entz, GA Blair, I Crandell… - … -European Journal of …, 2021 - Springer
The relationship between cardiac conduction velocity (CV) and extracellular potassium (K+)
is biphasic, with modest hyperkalemia increasing CV and severe hyperkalemia slowing CV …

Ephaptic coupling rescues conduction failure in weakly coupled cardiac tissue with voltage-gated gap junctions

SH Weinberg - Chaos: An Interdisciplinary Journal of Nonlinear …, 2017 - pubs.aip.org
Electrical conduction in cardiac tissue is usually considered to be primarily facilitated by gap
junctions, providing a pathway between the intracellular spaces of neighboring cells …

Diversity of cells and signals in the cardiovascular system

E Grandi, MF Navedo, JJ Saucerman… - The Journal of …, 2023 - Wiley Online Library
This white paper is the outcome of the seventh UC Davis Cardiovascular Research
Symposium on Systems Approach to Understanding Cardiovascular Disease and …

Ultrastructure and cardiac impulse propagation: scaling up from microscopic to macroscopic conduction

Z Qu, P Hanna, OA Ajijola, A Garfinkel… - The Journal of …, 2024 - Wiley Online Library
The standard conception of cardiac conduction is based on the cable theory of nerve
conduction, which treats cardiac tissue as a continuous syncytium described by the Hodgkin …

The cardiac gap junction has discrete functions in electrotonic and ephaptic coupling

RG Gourdie - The Anatomical Record, 2019 - Wiley Online Library
Connexin43‐formed gap junctions have long been thought to contribute to cardiac
conduction in the mammalian ventricle by providing direct electrotonic connectivity between …