51 results found
    1. Structural Biology and Molecular Biophysics

    A calcium transport mechanism for atrial fibrillation in Tbx5-mutant mice

    Wenli Dai et al.
    TBX5-loss associated cardiomyocyte ectopy and atrial fibrillation is prevented by augmentation of SERCA2 activity, establishing a mechanism underlying the genetic basis for a Ca2+-dependent pathway for AF risk.
    1. Computational and Systems Biology
    2. Medicine

    Computational modeling identifies embolic stroke of undetermined source patients with potential arrhythmic substrate

    Savannah F Bifulco et al.
    In models reconstructed from MRI scans of patients with embolic stroke of undetermined source, computational simulations reveal that fibrosis has the intrinsic capacity to sustain arrhythmia drivers when subjected to triggered activity known to exist in patients with atrial fibrillation.
    1. Computational and Systems Biology

    Drift and termination of spiral waves in optogenetically modified cardiac tissue at sub-threshold illumination

    Sayedeh Hussaini et al.
    Excitability gradients in heart tissue, imposed by structured sub-threshold optogenetic stimulation, induce drift and termination of spiral waves, thus providing an explanation for successful optogenetic defibrillation in small animal hearts.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Self-restoration of cardiac excitation rhythm by anti-arrhythmic ion channel gating

    Rupamanjari Majumder et al.
    Customization of ion channel gating enhances homeostatic regulation through automatic detection and correction of abnormal physiological changes, as illustrated by self-restoration of excitation rhythm in cardiac arrhythmias.
    1. Cell Biology
    2. Developmental Biology

    Mitochondrial Ca2+ uptake by the voltage-dependent anion channel 2 regulates cardiac rhythmicity

    Hirohito Shimizu et al.
    Enhancing mitochondrial Ca2+ uptake effectively suppresses aberrant Ca2+ induced arrhythmogenic events in zebrafish, mouse and human cardiomyocytes, demonstrating a critical role for mitochondria in the regulation of cardiac rhythmicity.
    1. Cell Biology

    Bid maintains mitochondrial cristae structure and function and protects against cardiac disease in an integrative genomics study

    Christi T Salisbury-Ruf et al.
    An integrative approach, combining genetic mouse and large-scale human genetics studies, was used to reveal a novel role for the Bcl-2 protein Bid in maintenance of mitochondrial function that alters susceptibility to myocardial infarction.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Cross-talk between individual phenol-soluble modulins in Staphylococcus aureus biofilm enables rapid and efficient amyloid formation

    Masihuz Zaman, Maria Andreasen
    Inter-molecular cross-seeding between phenol-soluble modulins facilitates rapid and efficient self-assembly in Staphylococcus aureus biofilms revealing a complex molecular interplay between distinct phenol-soluble modulins orchestrating functional amyloid formation.
    1. Computational and Systems Biology

    Cardiac Optogenetics: A move in the light direction

    Eike M Wülfers, Franziska Schneider-Warme
    Computer simulations show how low-intensity illumination can be used to terminate cardiac arrhythmias.
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    1. Structural Biology and Molecular Biophysics

    Polyunsaturated fatty acid analogues differentially affect cardiac NaV, CaV, and KV channels through unique mechanisms

    Briana M Bohannon et al.
    Polyunsaturated fatty acid analogues show selectivity for different cardiac ion channels, suggesting their potential use for the treatment of different subtypes of Long QT Syndrome.
    1. Medicine
    2. Neuroscience

    Neural population dynamics in human motor cortex during movements in people with ALS

    Chethan Pandarinath et al.
    Neural ensemble activity in the human motor cortex contains dynamical structure that is independent of movement parameters and is not well-explained by current models.

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