104 results found
    1. Cell Biology

    Profound regulation of Na/K pump activity by transient elevations of cytoplasmic calcium in murine cardiac myocytes

    Fang-Min Lu et al.
    Transient Ca elevations of cytoplasmic calcium in cardiac myocytes profoundly activate cardiac Na/K pump activity in parallel with physical-chemical changes of the sarcolemma but without involvement of conventional signaling mechanisms.
    1. Cell Biology
    2. Human Biology and Medicine

    Ryanodine receptor dispersion disrupts Ca2+ release in failing cardiac myocytes

    Terje R Kolstad et al.
    Experimental and mathematical modeling approaches identify a novel mechanism of heart failure, linking disrupted calcium homeostasis and impaired contractility of cardiacmyocytes to nanoscale reorganization of calcium release channels.
    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. 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. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    IRF4 haploinsufficiency in a family with Whipple’s disease

    Antoine Guérin et al.
    Autosomal dominant IRF4 deficiency is the first genetic etiology of Whipple's disease, a very rare chronic condition following a rather common infection by Tropheryma whipplei.
    1. Cell Biology

    The fibronectin synergy site re-enforces cell adhesion and mediates a crosstalk between integrin classes

    Maria Benito-Jardón et al.
    The fibronectin synergy site is only required in vivo when forces exceed or αvβ3 integrin levels fall below certain thresholds.
    1. Cell Biology

    The complex of TRIP-Br1 and XIAP ubiquitinates and degrades multiple adenylyl cyclase isoforms

    Wenbao Hu et al.
    XIAP/TRIP-Br1-mediated degradation of multiple adenylyl cyclase isoforms is a previously unrecognised general mechanism for controlling adenylyl cyclase expression and the homeostasis of cAMP signalling.
    1. Neuroscience

    Inhibitory peptidergic modulation of C. elegans serotonin neurons is gated by T-type calcium channels

    Kara E Zang et al.
    Genetic analysis of how neuropeptides control C. elegans reproductive behavior shows how T-type calcium channels engage and disengage target neurons from these critical regulators of neural circuits and behavior.
    1. Cell Biology
    2. Developmental Biology

    Suppression of ischemia in arterial occlusive disease by JNK-promoted native collateral artery development

    Kasmir Ramo et al.
    The kinase JNK is required in endothelial cells for the development of native collateral arteries.
    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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