507 results found
    1. Cell Biology

    An adaptation of astronomical image processing enables characterization and functional 3D mapping of individual sites of excitation-contraction coupling in rat cardiac muscle

    Qinghai Tian et al.
    The fusion of astronomy and cellular cardiology reveals the 3D arrangement and the firing reliability of active excitation-contraction coupling sites in beating cardiac myocytes.
    1. Developmental Biology

    Precardiac deletion of Numb and Numblike reveals renewal of cardiac progenitors

    Lincoln T Shenje et al.
    Cardiac progenitors remain undifferentiated and expansive in the second pharyngeal arch that serves as a microenvironment, and Numb and Numblike are required for their renewal.
    1. Developmental Biology

    Live imaging of heart tube development in mouse reveals alternating phases of cardiac differentiation and morphogenesis

    Kenzo Ivanovitch et al.
    Tissue-level coordination of cardiac progenitor cells in the early mouse embryo produces a temporal compartmentalization of differentiation and morphogenesis essential for heart tube formation.
    1. Developmental Biology

    The Apelin receptor enhances Nodal/TGFβ signaling to ensure proper cardiac development

    Ashish R Deshwar et al.
    The Apelin receptor acts as a rheostat to ensure that the proper levels of Nodal signaling are achieved for proper cell fate specification at the onset of gastrulation, in particular for cardiac progenitor development.
    1. Human Biology and 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. Ecology
    2. Evolutionary Biology

    Heart fossilization is possible and informs the evolution of cardiac outflow tract in vertebrates

    Lara Maldanis et al.
    The discovery of a fossil heart in Rhacolepis buccalis demonstrates that it is possible to scrutinize the fossil record for important clues on cardiac structure and evolution.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Massive palmitoylation-dependent endocytosis during reoxygenation of anoxic cardiac muscle

    Mei-Jung Lin et al.
    Reoxygenation of anoxic cardiac tissue promotes massive endocytosis that is triggered by release of coenzymeA from mitochondria, followed by palmitoylation of membrane proteins, sarcolemma vesiculation, and transfer of sarolemma vesicles to large endosomes and vacuoles.
    1. Developmental Biology

    Self-renewal: Finding a niche for cardiac precursors

    Benoit G Bruneau
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    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The GIRK1 subunit potentiates G protein activation of cardiac GIRK1/4 hetero-tetramers

    Kouki K Touhara et al.
    The GIRK1 subunit contains a defective Na+-binding site but behaves as if it is permanently bound to a sodium ion, and therefore increases the affinity of Gβγ to GIRK1/4 hetero-tetrameric channels in lipid membranes.
    1. Developmental Biology

    Calcium handling precedes cardiac differentiation to initiate the first heartbeat

    Richard CV Tyser et al.
    High-resolution live imaging reveals how and when the mouse heart first starts to beat during development and how the onset of beating impacts on heart muscle cell maturation and heart formation.

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