322 results found
    1. Neuroscience

    Oligodendrocytes control potassium accumulation in white matter and seizure susceptibility

    Valerie A Larson et al.
    Oligodendrocytes in white matter use Kir4.1 inwardly rectifying potassium channels to prevent extracellular potassium accumulation, enabling neurons to sustain repetitive firing and limiting the initiation of seizures.
    1. Human Biology and Medicine
    2. Neuroscience

    A homozygous loss-of-function CAMK2A mutation causes growth delay, frequent seizures and severe intellectual disability

    Poh Hui Chia et al.
    A biallelic missense mutation in the highly conserved, neuron-specific kinase CAMK2A abrogates holoenzyme assembly and causes a new inherited neurodevelopmental disease.
    1. Neuroscience

    Deletion of KCNQ2/3 potassium channels from PV+ interneurons leads to homeostatic potentiation of excitatory transmission

    Heun Soh et al.
    Loss of potassium channel activity from fast-spiking interneurons increases their excitability leading to unexpectedly increased fast excitatory transmission and seizure susceptibility.
    1. Neuroscience

    Acute inhibition of neurosteroid estrogen synthesis suppresses status epilepticus in an animal model

    Satoru M Sato, Catherine S Woolley
    Seizures stimulate estrogen synthesis in the brain and acutely inhibiting brain estrogen synthesis suppresses seizures, in both sexes, without additional interventions.
    1. Neuroscience

    BAD and KATP channels regulate neuron excitability and epileptiform activity

    Juan Ramón Martínez-François et al.
    Altered activity of ATP-sensitive K+ channels underlies the metabolic seizure resistance produced by genetic manipulation of the BAD protein in mice.
    1. Neuroscience

    Altered hippocampal interneuron activity precedes ictal onset

    Mitra L Miri et al.
    GABAergic interneuron populations in the hippocampus exhibit cell-type-specific patterns of disruption in advance of seizure onset.
    1. Neuroscience

    Postictal behavioural impairments are due to a severe prolonged hypoperfusion/hypoxia event that is COX-2 dependent

    Jordan S Farrell et al.
    Local tissue hypoxia follows seizures, is responsible for postictal behavioural dysfunction rather than the seizures per se and can be treated.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    NOVA-dependent regulation of cryptic NMD exons controls synaptic protein levels after seizure

    Taesun Eom et al.
    The HITS-CLIP sequencing method is used to demonstrate that cryptic exons can detect messenger RNA that contains nonsense mutations, and then cause this RNA to decay, which shows that these exons are involved in maintaining the electrical balance of neurons and, possibly, preventing epilepsy.
    1. Human Biology and Medicine
    2. Neuroscience

    Protein arginine methylation facilitates KCNQ channel-PIP2 interaction leading to seizure suppression

    Hyun-Ji Kim et al.
    The PRMT1 protein mediates arginine methylation of KCNQ2 channels to control neuronal excitability.
    1. Cell Biology
    2. Neuroscience

    Glial Ca2+signaling links endocytosis to K+ buffering around neuronal somas to regulate excitability

    Shirley Weiss et al.
    An unbiased genetic screen in Drosophila provides evidence for a direct link between glial Ca2+ 25 signaling and classical functions of glia in buffering external K+ as a mechanism to regulate neuronal excitability.

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