85 results found
    1. Cell Biology
    2. Computational and Systems Biology

    Development, calibration, and validation of a novel human ventricular myocyte model in health, disease, and drug block

    Jakub Tomek et al.
    A computer model of human cardiomyocyte was produced and validated on independent datasets, overcoming shortcomings of its predecessors, also yielding broadly relevant insights and results on major ionic currents.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    The Ca2+ transient as a feedback sensor controlling cardiomyocyte ionic conductances in mouse populations

    Colin M Rees et al.
    Feedback sensing of the intracellular calcium concentration suffices to reproduce the diversity of ionic conductances underlying normal cardiac electromechanical function in a genetically diverse population of mice.
    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

    KChIP2 is a core transcriptional regulator of cardiac excitability

    Drew M Nassal et al.
    The ion channel accessory subunit KChIP2 has a transcriptional role that provides regulation over miRNA targets, driving the adverse remodeling of key ion channels during cardiac stress and leading to the development of arrhythmia.
    1. Cell Biology

    Reduction of elevated proton leak rejuvenates mitochondria in the aged cardiomyocyte

    Huiliang Zhang et al.
    The primary respiratory defect seen in aged cardiomyocytes is an elevated proton leak mediated by ANT1, and this is prevented by treatment with SS-31 (elamipretide).
    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. 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. Immunology and Inflammation
    2. Neuroscience

    Subventricular zone/white matter microglia reconstitute the empty adult microglial niche in a dynamic wave

    Lindsay A Hohsfield et al.
    In an empty microglial niche, repopulating microglia arise from subventricular zone and white matter-associated areas without contributions from the bone marrow to fill the mouse brain via a spreading wave.
    1. Structural Biology and Molecular Biophysics

    Graded Ca2+/calmodulin-dependent coupling of voltage-gated CaV1.2 channels

    Rose E Dixon et al.
    The Ca2+-driven functional coupling of CaV1.2 channels is a mechanism of channel memory that may modulate the amplification of Ca2+ influx.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Increasing heart vascularisation after myocardial infarction using brain natriuretic peptide stimulation of endothelial and WT1+ epicardial cells

    Na Li et al.
    Brain natriuretic peptide supplementation can increase cardiac neovascularization in infarcted hearts by stimulating endogenous endothelial cell proliferation and proliferation of precursor cells, which will differentiate into endothelial cells.

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