ArticleCells2022
Tortuous Cardiac Intercalated Discs Modulate Ephaptic Coupling.
Article in Cells, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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Who cites it
8 citing papers in PubMed, 12 citations in OpenAlex.
- Cardiac Impulse Propagation: An Integrated View.JACC. Basic to translational science · 2026Review
- Ephaptic coupling and the source-sink effect of cardiac conduction.The Journal of physiology · 2026Article
- Gap junctional and ephaptic coupling in cardiac electrical propagation: homocellular and heterocellular perspectives.The Journal of physiology · 2026Review
- The influence of intercalated disk nanostructure on local ionic currents and cardiac conduction.Biophysical journal · 2026Article
- Ultrastructure and cardiac impulse propagation: scaling up from microscopic to macroscopic conduction.The Journal of physiology · 2025Review
- New focus on cardiac voltage-gated sodium channel β1 and β1B: Novel targets for treating and understanding arrhythmias?Heart rhythm · 2025Review
- Sodium channel subpopulations with distinct biophysical properties and subcellular localization enhance cardiac conduction.The Journal of general physiology · 2023Article
- Nano-scale solution of the Poisson-Nernst-Planck (PNP) equations in a fraction of two neighboring cells reveals the magnitude of intercellular electrochemical waves.PLoS computational biology · 2023Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cardiac ephaptic coupling, a mechanism mediated by negative electric potentials occurring in the narrow intercellular clefts of intercalated discs, can influence action potential propagation by modulating the sodium current. Intercalated discs are highly tortuous due to the mingling of plicate and interplicate regions. To investigate the effect of their convoluted structure on ephaptic coupling, we refined our previous model of an intercalated disc and tested predefined folded geometries, which we parametrized by orientation, amplitude and number of folds. Ephaptic interactions (assessed by the minimal cleft potential and amplitude of the sodium currents) were reinforced by concentric folds. With increasing amplitude and number of concentric folds, the cleft potential became more negative during the sodium current transient. This is explained by the larger resistance between the cleft and the bulk extracellular space. In contrast, radial folds attenuated ephaptic interactions and led to a less negative cleft potential due to a decreased net cleft resistance. In conclusion, despite limitations inherent to the simplified geometries and sodium channel distributions investigated as well as simplifications regarding ion concentration changes, these results indicate that the folding pattern of intercalated discs modulates ephaptic coupling.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.