92 results found
    1. Cell Biology
    2. Neuroscience

    The endoplasmic reticulum, not the pH gradient, drives calcium refilling of lysosomes

    Abigail G Garrity et al.
    The endoplasmic reticulum serves as a direct and primary source of calcium ions for the lysosome.
    1. Computational and Systems Biology
    2. Neuroscience

    CO2-evoked release of PGE2 modulates sighs and inspiration as demonstrated in brainstem organotypic culture

    David Forsberg et al.
    Novel brainstem organotypic cultures that generate rhythmic respiratory motor activity reveal the neural networks that control breathing and a new pathway in the hypercapnic response.
    1. Neuroscience

    Astrocytes contribute to synapse elimination via type 2 inositol 1,4,5-trisphosphate receptor-dependent release of ATP

    Junhua Yang et al.
    Astrocytes regulate the pruning of excitatory synapses during early life through ATP signaling.
    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. Physics of Living Systems
    2. Developmental Biology

    Distinct mechanisms regulating mechanical force-induced Ca2+ signals at the plasma membrane and the ER in human MSCs

    Tae-Jin Kim et al.
    Deep penetration and transmission of mechanical force to regulate ER functions depends on not only the passive cytoskeletal support, but also the active actomyosin contractility, which is dispensable for mechanotransduction at the plasma membrane.
    1. Neuroscience

    A positive feedback loop linking enhanced mGluR function and basal calcium in spinocerebellar ataxia type 2

    Pratap Meera et al.
    A damaging form of positive feedback linking elevated calcium levels and metabotropic glutamate receptor function in Purkinje neurons plays a critical role in the pathology in spinocerebellar ataxias.
    1. Neuroscience

    Activity-dependent switch of GABAergic inhibition into glutamatergic excitation in astrocyte-neuron networks

    Gertrudis Perea et al.
    Astrocytes decode temporal interneuron activity and transform inhibitory into excitatory signals that impact excitatory synaptic strength and neuronal circuit function.
    1. Neuroscience

    Repeated social defeat stress enhances glutamatergic synaptic plasticity in the VTA and cocaine place conditioning

    Claire E Stelly et al.
    Enhanced glutamatergic synaptic plasticity in mesolimbic dopaminergic neurons may contribute to repeatedly stressed rats becoming more vulnerable to addiction.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Viral GPCR US28 can signal in response to chemokine agonists of nearly unlimited structural degeneracy

    Timothy F Miles et al.
    Numerous chemokine variants bearing no sequence resemblance elicit similar signaling behavior from the viral GPCR US28, suggesting a mechanism for receptor activation that accommodates extensive ligand degeneracy.
    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.

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