2025
Optic nerve injury impairs intrinsic mechanisms underlying electrical activity in a resilient retinal ganglion cell
Zapadka T, Tran N, Demb J. Optic nerve injury impairs intrinsic mechanisms underlying electrical activity in a resilient retinal ganglion cell. The Journal Of Physiology 2025 PMID: 39985791, DOI: 10.1113/jp286414.Peer-Reviewed Original ResearchOptic nerve crushRetinal ganglion cellsOptic nerveGanglion cellsSynaptic inputsVoltage-gated sodium channel currentsRetinal ganglion cell typesVoltage-gatedRetinal ganglion cell survivalChelation of intracellular calciumResting membrane potentialOptic nerve injuryVoltage-gated currentsAxonal injurySodium channel currentsRetinal ganglion cell axonsRGC typesAlpha retinal ganglion cellsAxon initial segmentIntracellular calciumRate of survivalNerve injuryElectrophysiological propertiesNerve crushIntrinsic excitability
2024
Interplay of Nav1.8 and Nav1.7 channels drives neuronal hyperexcitability in neuropathic pain
Vasylyev D, Zhao P, Schulman B, Waxman S. Interplay of Nav1.8 and Nav1.7 channels drives neuronal hyperexcitability in neuropathic pain. Journal Of General Physiology 2024, 156: e202413596. PMID: 39378238, PMCID: PMC11465073, DOI: 10.1085/jgp.202413596.Peer-Reviewed Original ResearchConceptsDorsal root ganglionGain-of-function Nav1.7 mutationsDorsal root ganglion neuronsSodium channel Nav1.7Inherited erythromelalgiaNav1.7 mutationsNeuropathic painNeuronal hyperexcitabilityOpen-probabilityVoltage-gated sodium channel Nav1.7Hyperexcitability of DRG neuronsModel of neuropathic painSubthreshold membrane potential oscillationsResting membrane potentialMembrane potential oscillationsReduced firing probabilityIncreased rheobaseNav1.8 channelsDRG neuronsHuman genetic modelsNav1.8Root ganglionNav1.7 channelsNav1.7AP generation
2006
GABAergic Synaptic Inhibition Is Reduced before Seizure Onset in a Genetic Model of Cortical Malformation
Trotter S, Kapur J, Anzivino M, Lee K. GABAergic Synaptic Inhibition Is Reduced before Seizure Onset in a Genetic Model of Cortical Malformation. Journal Of Neuroscience 2006, 26: 10756-10767. PMID: 17050714, PMCID: PMC6674751, DOI: 10.1523/jneurosci.2323-06.2006.Peer-Reviewed Original ResearchConceptsSpontaneous IPSCsSeizure onsetCortical malformationsPyramidal neuronsAmplitude of spontaneous IPSCsFrequency of spontaneous IPSCsCalcium-binding protein parvalbuminGABAergic synaptic inhibitionHeightened seizure susceptibilityInhibitory GABAergic neurotransmissionPresynaptic GABAergic terminalsGABAergic synaptic transmissionResting membrane potentialPyramidal cell somataHigher input resistanceTish cortexMiniature IPSCsNeocortical malformationsSynaptic inhibitionGABAergic interneuronsGABAergic neurotransmissionSeizure susceptibilityProtein parvalbuminImmunohistochemical assessmentGABAergic terminals
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