469 results found
    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. Immunology and Inflammation
    2. Stem Cells and Regenerative Medicine

    Macrophages promote endothelial-to-mesenchymal transition via MT1-MMP/TGFβ1 after myocardial infarction

    Laura Alonso-Herranz et al.
    Macrophage production of MT1-MMP upon MI contributes to adverse cardiac remodeling and worsened function by promoting EndMT via TGFB, suggesting MT1-MMP inhibition as a therapeutic option for patients with MI.
    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. Medicine

    Human cardiac fibroblasts adaptive responses to controlled combined mechanical strain and oxygen changes in vitro

    Giovanni Stefano Ugolini et al.
    Human cardiac fibroblasts regulate their cellular responses according to the combination of multiple environmental stimuli namely oxygen changes and mechanical signals.
    1. Medicine

    Effects of myosin variants on interacting-heads motif explain distinct hypertrophic and dilated cardiomyopathy phenotypes

    Lorenzo Alamo et al.
    Mapping the locations of hypertrophic cardiomyopathy gene variants onto the three-dimensional structures of contractile proteins revealed that these disrupt protein interactions are critical for normal cardiac relaxation and efficient energy usage.
    1. Biochemistry and Chemical Biology

    Dwarf open reading frame (DWORF) is a direct activator of the sarcoplasmic reticulum calcium pump SERCA

    M'Lynn E Fisher et al.
    Activation of the sarcoplasmic reticulum calcium pump and enhancement of cellular calcium homeostasis by dwarf open reading frame reveal how this small membrane protein opposes phospholamban inhibitory function in cardiac muscle.
    1. Developmental Biology

    The flow responsive transcription factor Klf2 is required for myocardial wall integrity by modulating Fgf signaling

    Seyed Javad Rasouli et al.
    Endocardial Klf2 regulates cardiomyocyte adhesion and myocardial wall integrity by modulating FGF signaling in zebrafish.
    1. Structural Biology and Molecular Biophysics

    Fatty acid analogue N-arachidonoyl taurine restores function of IKs channels with diverse long QT mutations

    Sara I Liin et al.
    Fatty acid analogues are interesting prototype compounds that may inspire the development of future IKs channel activators to treat patients with long QT syndrome caused by diverse arrhythmia-causing mutations in the IKs channel.
    1. Cell Biology
    2. Medicine

    The Ca2+-activated cation channel TRPM4 is a positive regulator of pressure overload-induced cardiac hypertrophy

    Yang Guo et al.
    The TRPM4 ion channel has been identified as an important component in the causation of mechanical pressure overload-induced pathological left ventricular hypertrophy, which is a powerful predictor of cardiovascular mortality.
    1. Cell Biology

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

    Rengasayee Veeraraghavan et al.
    Structural and functional investigations identify a structural unit for ephaptic coupling in the heart, and provide the mechanistic basis for a novel strategy for the treatment of arrhythmias.

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