229 results found
    1. Cell Biology
    2. Medicine

    Chinese natural compound decreases pacemaking of rabbit cardiac sinoatrial cells by targeting second messenger regulation of f-channels

    Chiara Piantoni, Manuel Paina ... Mirko Baruscotti
    A Traditional Chinese Medicine botanical drug exerts a competitive antagonism on the cAMP-induced modulation of sinoatrial node pacemaker channels and this functional inhibition reduces the slope of the diastolic depolarization hence spontaneous cell automaticity.
    1. Cell Biology
    2. Neuroscience

    TRPC3 and NALCN channels drive pacemaking in substantia nigra dopaminergic neurons

    Ki Bum Um, Suyun Hahn ... Myoung Kyu Park
    The non-selective Na+ leak channel (NALCN) and the transient receptor potential 3 channel (TRPC3) cooperate in driving pacemaking in substantia nigra dopaminergic neurons.
    1. Neuroscience

    Ih block reveals separation of timescales in pyloric rhythm response to temperature changes in Cancer borealis

    Kyra Schapiro, JD Rittenberg ... Eve Marder
    The hyperpolarization-activated inward current plays an important role in regulating both smooth transitory responses and persistent increases in pyloric frequency during temperature fluctuations in Cancer borealis.
    1. Neuroscience

    Development of pacemaker properties and rhythmogenic mechanisms in the mouse embryonic respiratory network

    Marc Chevalier, Natalia Toporikova ... Muriel Thoby-Brisson
    Pacemaker neurons are present in the preBötC circuitry of mouse embryos and their role in driving respiratory network activity changes during the critical period immediately before birth.
    1. Neuroscience

    Insights into the dynamic control of breathing revealed through cell-type-specific responses to substance P

    Nathan A Baertsch, Jan-Marino Ramirez
    The neuromodulator substance P enhances mechanisms of recurrent excitation between breaths to control breathing frequency and stability.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Ca2+ signaling driving pacemaker activity in submucosal interstitial cells of Cajal in the murine colon

    Salah A Baker, Wesley A Leigh ... Kenton M Sanders
    An optogenetic dual-color Ca2+-imaging approach shows how submucosal pacemaker-cells, interstitial cells of Cajal, modulate smooth-muscle responses and drive colonic motility via complex Ca2+ signaling.
    1. Genetics and Genomics

    A phenotype-based forward genetic screen identifies Dnajb6 as a sick sinus syndrome gene

    Yonghe Ding, Di Lang ... Xiaolei Xu
    Dnajb6 is identified as a novel sick sinus syndrome causative gene that exhibits a unique expression pattern within a subpopulation of sinus node pacemaker cells.
    1. Cell Biology
    2. Developmental Biology

    Nr2f1a maintains atrial nkx2.5 expression to repress pacemaker identity within venous atrial cardiomyocytes of zebrafish

    Kendall E Martin, Padmapriyadarshini Ravisankar ... Joshua S Waxman
    The transcription factor Nr2f1a represses ventricular and pacemaker cardiomyocyte identities within distinct regions of the zebrafish atrium.
    1. Neuroscience

    Organelle calcium-derived voltage oscillations in pacemaker neurons drive the motor program for food-seeking behavior in Aplysia

    Alexis Bédécarrats, Laura Puygrenier ... Romuald Nargeot
    An atypical neuronal pacemaker mechanism triggers feeding motor pattern in Aplysia..
    1. Computational and Systems Biology
    2. Neuroscience

    Sodium channels implement a molecular leaky integrator that detects action potentials and regulates neuronal firing

    Marco A Navarro, Autoosa Salari ... Lorin S Milescu
    Kinetic interactions between sodium channels and auxiliary factors create a molecular computational engine that can sense and regulate cellular excitability.

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