4,714 results found
    1. Neuroscience

    TrpML-mediated astrocyte microdomain Ca2+ transients regulate astrocyte–tracheal interactions

    Zhiguo Ma, Marc R Freeman
    Astrocyte microdomain calcium transients are mediated by TrpML, stimulated by ROS and tyramine, and mediate astrocyte–tracheal interactions in CNS gas exchange.
    1. Cancer Biology

    Transient rapamycin treatment can increase lifespan and healthspan in middle-aged mice

    Alessandro Bitto et al.
    Three months treatment with the drug rapamycin increases lifespan, alters cancer prevalence, remodels the microbiome, and improves functional measures of health in middle aged mice in a dose- and sex-dependent manner.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    The Ca2+ transient as a feedback sensor controlling cardiomyocyte ionic conductances in mouse populations

    Colin M Rees et al.
    Feedback sensing of the intracellular calcium concentration suffices to reproduce the diversity of ionic conductances underlying normal cardiac electromechanical function in a genetically diverse population of mice.
    1. Neuroscience

    Spontaneous neurotransmission signals through store-driven Ca2+ transients to maintain synaptic homeostasis

    Austin L Reese, Ege T Kavalali
    Individual neurons can adjust the strength of their synapses by using spontaneous calcium influx through NMDA receptors to trigger the release of additional calcium from intracellular stores, which can in turn be used to regulate protein synthesis.
    1. Neuroscience

    Firing rate-dependent phase responses of Purkinje cells support transient oscillations

    Yunliang Zang et al.
    Computational and theoretical models show that rate adaptation of phase responses can regulate Purkinje cell outputs by forming transient oscillations in fast-spiking neurons.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    IP3 mediated global Ca2+ signals arise through two temporally and spatially distinct modes of Ca2+ release

    Jeffrey T Lock, Ian Parker
    Cell-wide Ca2+ signals that regulate numerous cellular functions comprise dual Ca2+ release modes through IP3 receptors, punctate transients mediated by clustered receptors and spatiotemporally diffuse release through functionally distinct receptors.
    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. Neuroscience

    Phasic activation of ventral tegmental neurons increases response and pattern similarity in prefrontal cortex neurons

    Motoko Iwashita
    Transient increases in calcium release in prefrontal cortex neurons, observable only in awake animals, may form the basis of associative learning.
    1. Structural Biology and Molecular Biophysics

    Structure of a low-population intermediate state in the release of an enzyme product

    Alfonso De Simone et al.
    Product release from human lysozyme is mediated by an intermediate state with transient weak interactions between the product and enzyme.
    1. Neuroscience

    Neuronal processing of noxious thermal stimuli mediated by dendritic Ca2+ influx in Drosophila somatosensory neurons

    Shin-Ichiro Terada et al.
    Drosophila polymodal nociceptors use precipitous fluctuation of the firing rate, which depends on Ca2+ influx, as a key signal encoding a heat sensation and evoking the robust heat avoidance behavior.

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