Cited by 125Cardiac electrophysiology and arrhythmiasConnexins and lens biologyCardiac Arrhythmias and Treatments

Influence of anisotropic conduction properties in the propagation of the cardiac action potential

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Valderrábano, Miguel·2007·Progress in Biophysics and Molecular Biology

Abstract

Anisotropy, the property of being directionally dependent, is ubiquitous in nature. Propagation of the electrical impulse in cardiac tissue is anisotropic, a property that is determined by molecular, cellular, and histological determinants. The properties and spatial arrangement of connexin molecules, the cell size and geometry, and the fiber orientation and arrangement are examples of structural determinants of anisotropy. Anisotropy is not a static property but is subject to dynamic functional regulation, mediated by modulation of gap junctional conductance. Tissue repolarization is also anisotropic. The relevance of anisotropy extends beyond normal propagation and has important implications in pathological states, as a potential substrate for abnormal rhythms and reentry.

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Crossref · 10.1016/j.pbiomolbio.2007.03.014

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  • In healthy tissues, action potentials propagate faster in the direction of cell alignment, with myocytes showing slower conduction velocities in the transverse direction.

    “In healthy tissues, action potentials propagate faster in the direction of cell alignment, with myocytes showing slower conduction velocities (CVs) in the transverse direction (33).”

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Authors
Valderrábano, M.
Affiliations
Houston Methodist (US)
Corresponding author
Valderrábano, Miguel
Venue
Progress in Biophysics and Molecular Biology
Publisher
Elsevier BV
Published
2007-05
Volume
94
Issue
1-2
Pages
144-168
ISSN
0079-6107 (ISSN-L)
OpenAlex
W2015162683
Cited by
125
References
110
Citations by year
2026: 2 · 2025: 6 · 2024: 5 · 2023: 9 · 2022: 11 · 2021: 10 · 2020: 17 · 2019: 10 · 2018: 5 · 2017: 10 · 2016: 4 · 2015: 5 · 2014: 7 · 2013: 7 · 2012: 3
FWCI
0.58
Type
journal article
Language
en
Open access
Locations
  • Progress in Biophysics and Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r21hl085215-02)
  • National Heart, Lung, and Blood Institute (R21-HL085215)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Connexins and lens biology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
Keywords
cardiac anisotropy, cardiac action potential propagation, gap junction conductance, connexins, fiber orientation, reentry, cardiac arrhythmias, cardiac tissue electrophysiology
MeSH terms
Action Potentials, Animals, Computer Simulation, Electric Conductivity, Heart Conduction System, Humans, Models, Cardiovascular, Cardiomyopathies, Anisotropy, Connexins, Myocytes, Cardiac

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