826 results found
    1. Developmental Biology

    Straightjacket/α2δ3 deregulation is associated with cardiac conduction defects in myotonic dystrophy type 1

    Emilie Auxerre-Plantié et al.
    Drosophila DM1 models suggest that elevated cardiac expression of straightjacket/α2δ3, a regulatory subunit of voltage-gated calcium channel, contributes to cardiac conduction defects in DM1.
    1. Developmental Biology

    Revised roles of ISL1 in a hES cell-based model of human heart chamber specification

    Roberto Quaranta et al.
    Loss and gain-of-function investigation uncovers a regulatory network controlling human heart chamber specification in which the cardiac precursor gene ISL1 accelerates ventricular induction and antagonizes retinoic acid-driven atrial commitment.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Trait-associated noncoding variant regions affect TBX3 regulation and cardiac conduction

    Jan Hendrik van Weerd et al.
    Multiple variant transcriptional regulatory elements in >1 megabasepairs of noncoding DNA close to TBX3 affect gene expression and atrioventricular conduction system function in vivo.
    1. Cell Biology
    2. Developmental Biology

    Loss of the transcription factor Meis1 prevents sympathetic neurons target-field innervation and increases susceptibility to sudden cardiac death

    Fabrice Bouilloux et al.
    The transcription factor Meis1 is a dedicated maintenance factor for sympathetic neurons and controls the expression of key genes involved in endosome trafficking.
    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.
    1. Structural Biology and Molecular Biophysics
    2. Developmental Biology

    Cell-accurate optical mapping across the entire developing heart

    Michael Weber et al.
    The combination of high-speed light sheet microscopy and suitable data analysis facilitates cell-accurate measurements across entire organs and opens the way to systematic, scale-bridging, in vivo studies of organogenesis.
    1. Cell Biology

    Myogenic vasoconstriction requires G12/G13 and LARG to maintain local and systemic vascular resistance

    Ramesh Chennupati et al.
    Genetic mouse models identify a critical mechanism of myogenic vasoconstriction and reveal the in vivo function of myogenic autoregulation in protecting from organ overperfusion and in maintaining vascular resistance.
    1. Medicine

    Myocardial NADPH oxidase-4 regulates the physiological response to acute exercise

    Matthew Hancock et al.
    Cardiomyocyte Nox4 is a crucial physiological mediator of Nrf2 activation during acute exercise, triggering an adaptive response that preserves redox balance, mitochondrial and cardiac function to support normal physical exercise.
    1. Developmental Biology

    Heg1 and Ccm1/2 proteins control endocardial mechanosensitivity during zebrafish valvulogenesis

    Stefan Donat et al.
    The cerebral cavernous malformations complex is controlled in a blood-flow sensitive manner and affects cardiac valve leaflet morphogenesis by regulating the expression of Klf2 and of Notch signalling activity.
    1. Developmental Biology

    Specialized impulse conduction pathway in the alligator heart

    Bjarke Jensen et al.
    A specialized conduction pathway for the electrical impulse in the heart, previously thought to be associated with the endothermic mammals and birds only, is also present in the ectothermic crocodiles.

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