2022
Complex effects on CaV2.1 channel gating caused by a CACNA1A variant associated with a severe neurodevelopmental disorder
Grosso B, Kramer A, Tyagi S, Bennett D, Tifft C, D’Souza P, Wangler M, Macnamara E, Meza U, Bannister R. Complex effects on CaV2.1 channel gating caused by a CACNA1A variant associated with a severe neurodevelopmental disorder. Scientific Reports 2022, 12: 9186. PMID: 35655070, PMCID: PMC9163077, DOI: 10.1038/s41598-022-12789-y.Peer-Reviewed Original ResearchConceptsCongenital ataxiaQ-type Ca2Function mutationsSevere neurodevelopmental disorderTsA-201 cellsCerebral edemaFocal seizuresCaV2.1 channelsCentral synapsesChannel dysfunctionNeurological disordersNeuromuscular junctionCACNA1A variantsNeurotransmitter releaseΑ1A subunitAction potential-like stimuliReversal potentialNeurodevelopmental disordersComplex functional effectsFunctional effectsDisordersAtaxiaMissense mutationsCa2Channel gating
2018
Adolescent Nicotine Exposure Alters GABAA Receptor Signaling in the Ventral Tegmental Area and Increases Adult Ethanol Self-Administration
Thomas A, Ostroumov A, Kimmey B, Taormina M, Holden W, Kim K, Brown-Mangum T, Dani J. Adolescent Nicotine Exposure Alters GABAA Receptor Signaling in the Ventral Tegmental Area and Increases Adult Ethanol Self-Administration. Cell Reports 2018, 23: 68-77. PMID: 29617674, PMCID: PMC5983379, DOI: 10.1016/j.celrep.2018.03.030.Peer-Reviewed Original ResearchConceptsVentral tegmental areaAdolescent nicotine exposureNicotine exposureTegmental areaChloride extrusionLateral ventral tegmental areaSubsequent ethanol intakeVTA GABA neuronsNicotine-treated animalsGlucocorticoid receptor activationGABAA Receptor SignalingEthanol Self‐AdministrationGABA neuronsPathological drinkingVTA GABAAlcohol drinkingEthanol intakeReceptor activationSelf-AdministrationRisk profileGABANeuron responsesAdolescent smokingReceptor signalingReversal potential
2007
Sodium‐dependent potassium channels of a Slack‐like subtype contribute to the slow afterhyperpolarization in lamprey spinal neurons
Wallén P, Robertson B, Cangiano L, Löw P, Bhattacharjee A, Kaczmarek LK, Grillner S. Sodium‐dependent potassium channels of a Slack‐like subtype contribute to the slow afterhyperpolarization in lamprey spinal neurons. The Journal Of Physiology 2007, 585: 75-90. PMID: 17884929, PMCID: PMC2375474, DOI: 10.1113/jphysiol.2007.138156.Peer-Reviewed Original ResearchConceptsSodium-dependent potassium channelSlow afterhyperpolarizationAction potentialsPotassium channelsSingle action potentialLamprey spinal neuronsLamprey spinal cordLamprey locomotor networkSlow AHPLarge neuronsSpinal neuronsSpinal cordLocomotor networksBurst activityKNa channelsDistinct immunoreactivityGray matterReversal potentialNeuronsChloride injectionAfterhyperpolarizationRapid activationFunctional roleHigh-level activitiesSlack gene
2006
MCP-1 Enhances Excitability of Nociceptive Neurons in Chronically Compressed Dorsal Root Ganglia
Sun J, Yang B, Donnelly D, Ma C, LaMotte R. MCP-1 Enhances Excitability of Nociceptive Neurons in Chronically Compressed Dorsal Root Ganglia. Journal Of Neurophysiology 2006, 96: 2189-2199. PMID: 16775210, DOI: 10.1152/jn.00222.2006.Peer-Reviewed Original ResearchConceptsMonocyte chemoattractant protein-1Dorsal root gangliaNociceptive neuronsRoot gangliaCompressed dorsal root ganglionIntact dorsal root gangliaSmall DRG neuronsProportion of neuronsChemoattractant protein-1Action potential widthNonselective cation conductanceMagnitude of depolarizationCCD neuronsChronic compressionDRG neuronsExcitatory effectsReceptor CCR2Nociceptive propertiesIntact gangliaNeuronal expressionInward currentsNeuronsCurrent clampGangliaReversal potentialNeocortical Network Activity In Vivo Is Generated through a Dynamic Balance of Excitation and Inhibition
Haider B, Duque A, Hasenstaub A, McCormick D. Neocortical Network Activity In Vivo Is Generated through a Dynamic Balance of Excitation and Inhibition. Journal Of Neuroscience 2006, 26: 4535-4545. PMID: 16641233, PMCID: PMC6674060, DOI: 10.1523/jneurosci.5297-05.2006.Peer-Reviewed Original ResearchConceptsCerebral cortexNeocortical network activityReversal potentialUp statesPersistent network activityNetwork activityDepolarized reversal potentialSpontaneous network activityField potential recordingsLocal cortical circuitsLocal field potential recordingsNeuronal responsivenessCortical functionRecurrent excitatoryCortical circuitsSynaptic currentsPotential recordingsRecurrent excitationExcitatory conductancePrefrontal cortexInhibitory connectionsCortexStable network statesSlow oscillationsInhibition
2004
Histamine modulates thalamocortical activity by activating a chloride conductance in ferret perigeniculate neurons
Lee K, Broberger C, Kim U, McCormick D. Histamine modulates thalamocortical activity by activating a chloride conductance in ferret perigeniculate neurons. Proceedings Of The National Academy Of Sciences Of The United States Of America 2004, 101: 6716-6721. PMID: 15096604, PMCID: PMC404111, DOI: 10.1073/pnas.0400817101.Peer-Reviewed Original ResearchConceptsApplication of histamineGamma-aminobutyric acidPerigeniculate nucleusGABAergic neuronsSingle spike activityMammalian central nervous systemCentral nervous systemHistaminergic actionPerigeniculate neuronsHistaminergic fibersHistaminergic systemHistaminergic receptorsTuberomammillary nucleusIontophoretic applicationPostsynaptic factorsThalamocortical activityInhibitory responsesNeuronal activityThalamic oscillationsNervous systemHistamineMembrane hyperpolarizationSpindle wavesIonotropic receptorsReversal potential
2000
Cellular Mechanisms of Long-Lasting Adaptation in Visual Cortical Neurons In Vitro
Sanchez-Vives M, Nowak L, McCormick D. Cellular Mechanisms of Long-Lasting Adaptation in Visual Cortical Neurons In Vitro. Journal Of Neuroscience 2000, 20: 4286-4299. PMID: 10818164, PMCID: PMC6772630, DOI: 10.1523/jneurosci.20-11-04286.2000.Peer-Reviewed Original ResearchConceptsSpike frequency adaptationSlow afterhyperpolarizationCortical neuronsFerret primary visual cortexProlonged dischargeCellular mechanismsVisual cortical neuronsPrimary visual cortexSlow spike frequency adaptationIntracellular recordingsIntracellular injectionRightward shiftAfterhyperpolarizationVisual cortexReversal potentialContrast adaptationNeuronsDischarge frequencyMembrane conductanceVivoVisual systemBlockadeCortexImportant role
1998
Functional and Ionic Properties of a Slow Afterhyperpolarization in Ferret Perigeniculate Neurons In Vitro
Kim U, Mccormick D. Functional and Ionic Properties of a Slow Afterhyperpolarization in Ferret Perigeniculate Neurons In Vitro. Journal Of Neurophysiology 1998, 80: 1222-1235. PMID: 9744934, DOI: 10.1152/jn.1998.80.3.1222.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnesthetics, LocalAnimalsApaminBicucullineCalciumCalcium Channel BlockersExcitatory Postsynaptic PotentialsFemaleFerretsGABA Antagonistsgamma-Aminobutyric AcidGeniculate BodiesLidocaineMaleNeuronsomega-Conotoxin GVIAPeptidesPeriodicityPotassiumPotassium ChannelsSodiumTetraethylammoniumTetrodotoxinConceptsApplication of apaminSlow afterhyperpolarizationLow-threshold Ca2Perigeniculate neuronsPlateau potentialsBlock of Ca2Spindle wave generationMedium-duration afterhyperpolarizationGABAergic neuronsTonic dischargeFast afterhyperpolarizationPerigeniculate nucleusIntracellular recordingsAfterhyperpolarizationAction potentialsRefractory periodLocal applicationProlonged depolarizationRepetitive Ca2Spindle wavesReversal potentialNeuronsApaminMembrane conductanceActivation
1996
Ca2+ influx and activation of a cation current are coupled to intracellular Ca2+ release in peptidergic neurons of Aplysia californica.
Knox RJ, Jonas EA, Kao LS, Smith PJ, Connor JA, Kaczmarek LK. Ca2+ influx and activation of a cation current are coupled to intracellular Ca2+ release in peptidergic neurons of Aplysia californica. The Journal Of Physiology 1996, 494: 627-639. PMID: 8865062, PMCID: PMC1160665, DOI: 10.1113/jphysiol.1996.sp021520.Peer-Reviewed Original ResearchConceptsBag cell neuronsCell neuronsThapsigargin-sensitive Ca2Cation currentReversal potentialVoltage-activated Ba2Non-selective cation currentAplysia californicaApparent reversal potentialSteady-state Ca2Thapsigargin-induced elevationMin. 3Endoplasmic reticulum Ca2Voltage-clamp experimentsMicroM tetrodotoxinPeptidergic neuronsIntact gangliaAbdominal ganglionExtracellular Ca2Intracellular Ca2Intracellular storesBAPTA-AMSmall depolarizationBasal levelsNeuronsPatch‐clamp characterization of nicotinic receptors in a subpopulation of lamina X neurones in rat spinal cord slices.
Bordey A, Feltz P, Trouslard J. Patch‐clamp characterization of nicotinic receptors in a subpopulation of lamina X neurones in rat spinal cord slices. The Journal Of Physiology 1996, 490: 673-678. PMID: 8683466, PMCID: PMC1158705, DOI: 10.1113/jphysiol.1996.sp021176.Peer-Reviewed Original ResearchConceptsLamina X neuronesSpinal cord slicesNicotinic acetylcholine receptorsCord slicesD-tubocurarineCentral canalTransverse thoracolumbar spinal cord slicesAcetylcholine receptorsAction potentialsRat spinal cord slicesWhole-cell patch-clamp techniqueDirect postsynaptic effectPatch-clamp techniqueStrong inward rectificationPostsynaptic effectsDorsal commissureNicotinic receptorsNicotinic agonistsPatch-clamp characterizationNeuronesVentral halfReceptors resultsReversal potentialReceptorsInward rectification
1995
Synaptic and membrane mechanisms underlying synchronized oscillations in the ferret lateral geniculate nucleus in vitro.
Bal T, von Krosigk M, McCormick D. Synaptic and membrane mechanisms underlying synchronized oscillations in the ferret lateral geniculate nucleus in vitro. The Journal Of Physiology 1995, 483: 641-663. PMID: 7776249, PMCID: PMC1157808, DOI: 10.1113/jphysiol.1995.sp020612.Peer-Reviewed Original ResearchConceptsInhibitory postsynaptic potentialsLGNd relay cellsLateral geniculate nucleusPerigeniculate nucleusRelay cellsGABAB receptorsSpindle wavesPGN neuronsGeniculate nucleusBicuculline-sensitive inhibitory postsynaptic potentialsExcitatory amino acid transmissionDorsal lateral geniculate nucleusFerret dorsal lateral geniculate nucleusFerret lateral geniculate nucleusAmino acid transmissionReversal potentialIntracellular recording techniquesLow-threshold Ca2Vitro. 2Mean reversal potentialSingle-unit activityLocal electrical stimulationKCl-filled microelectrodesPharmacological antagonismBicuculline methiodide
1994
Retinal ganglion cells express a cGMP-gated cation conductance activatable by nitric oxide donors
Ahmad I, Leinders-Zufall T, Kocsis J, Shepherd G, Zufall F, Barnstable C. Retinal ganglion cells express a cGMP-gated cation conductance activatable by nitric oxide donors. Neuron 1994, 12: 155-165. PMID: 7507337, DOI: 10.1016/0896-6273(94)90160-0.Peer-Reviewed Original ResearchMeSH Keywords1-Methyl-3-isobutylxanthine8-Bromo Cyclic Adenosine MonophosphateAnimalsAnimals, NewbornBase SequenceCells, CulturedCyclic GMPCyclic Nucleotide-Gated Cation ChannelsCysteineDNA PrimersElectric ConductivityGene ExpressionIn Situ HybridizationIon ChannelsMembrane PotentialsModels, NeurologicalMolecular Sequence DataNitric OxideNitroprussidePolymerase Chain ReactionRatsRats, WistarRetinal Ganglion CellsRetinal Rod Photoreceptor CellsS-NitrosothiolsTranscription, GeneticConceptsRetinal ganglion cellsGanglion cellsWhole-cell patch-clamp recordingsRat retinal ganglion cellsNitric oxide donor sodium nitroprussideCation channelsGanglion cell activityPatch-clamp recordingsCation conductanceNitric oxide donorDonor sodium nitroprussideNonselective cation channelsAmacrine cellsSodium nitroprussideOxide donorPhosphodiesterase inhibitorCell activityPolymerase chain reaction amplificationNitric oxideChain reaction amplificationReversal potentialOutward rectificationRod photoreceptorsCGMPS-nitrosocysteine
1993
Mechanisms of oscillatory activity in guinea‐pig nucleus reticularis thalami in vitro: a mammalian pacemaker.
Bal T, McCormick D. Mechanisms of oscillatory activity in guinea‐pig nucleus reticularis thalami in vitro: a mammalian pacemaker. The Journal Of Physiology 1993, 468: 669-691. PMID: 8254530, PMCID: PMC1143849, DOI: 10.1113/jphysiol.1993.sp019794.Peer-Reviewed Original ResearchConceptsLow-threshold Ca2Nucleus reticularis thalamiRhythmic burst firingThreshold Ca2Reticularis thalamiBurst firingExtracellular Ca2Action potentialsOscillatory activityShort-latency burstsSingle spike activityVitro. 2Fast action potentialsNon-selective cationSlow ADPThalamic afferentsTonic dischargeNRT cellsIntracellular recordingsIntracellular injectionSpike AHPsSpike activitySingle neuronesExtracellular applicationReversal potentialThe peptide FMRFa terminates a discharge in Aplysia bag cell neurons by modulating calcium, potassium, and chloride conductances
Fisher T, Lin C, Kaczmarek L. The peptide FMRFa terminates a discharge in Aplysia bag cell neurons by modulating calcium, potassium, and chloride conductances. Journal Of Neurophysiology 1993, 69: 2164-2173. PMID: 7688803, DOI: 10.1152/jn.1993.69.6.2164.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAplysiaCalcium ChannelsCells, CulturedChloride ChannelsElectric StimulationElectrophysiologyFMRFamideGangliaImmunohistochemistryIon ChannelsMembrane PotentialsMembrane ProteinsNeuritesNeuronsNeuropeptidesNeurotransmitter AgentsPotassium ChannelsStereotyped BehaviorTetradecanoylphorbol AcetateConceptsBag cell neuronsCell neuronsAction potentialsElectrical stimulationVoltage-activated calcium currentsOnset of afterdischargePowerful inhibitory influenceIntact abdominal gangliaIon substitution experimentsVoltage-clamp experimentsAfferent nervesProtein kinase C. 5Channel blockersCalcium currentPrimary cell culturesAbdominal ganglionInhibitory influenceAfterdischargesCyclic AMP analogueFMRFaOutward currentsNeuronal processesNeuronsAplysia bag cell neuronsReversal potential
1991
Acute electrophysiological responses of bradykinin‐stimulated human fibroblasts.
Estacion M. Acute electrophysiological responses of bradykinin‐stimulated human fibroblasts. The Journal Of Physiology 1991, 436: 603-620. PMID: 1648132, PMCID: PMC1181524, DOI: 10.1113/jphysiol.1991.sp018569.Peer-Reviewed Original ResearchConceptsFura-2 fluorescencePipette solutionIon substitution experimentsGTP gamma SReversal potentialBradykinin stimulationPresence of GTPHuman dermal fibroblastsGamma SPatch-clamp techniqueNon-specific cation channelsBradykinin additionDermal fibroblastsIntracellular calciumLittle voltage dependencePatch-clamped cellsTail current analysisAcute responseInward currentsCalcium ionophoreOutward currentsNear baselineCation channelsElectrophysiological responsesBradykinin
1989
GABA as an inhibitory neurotransmitter in human cerebral cortex
McCormick D. GABA as an inhibitory neurotransmitter in human cerebral cortex. Journal Of Neurophysiology 1989, 62: 1018-1027. PMID: 2573696, DOI: 10.1152/jn.1989.62.5.1018.Peer-Reviewed Original ResearchConceptsInhibitory postsynaptic potentialsGamma-aminobutyric acidEarly inhibitory postsynaptic potentialHuman cerebral cortexExcitatory postsynaptic potentialsAverage reversal potentialCerebral cortexInhibitory neurotransmitterPostsynaptic potentialsLate inhibitory postsynaptic potentialsSlow inhibitory postsynaptic potentialGABAergic inhibitory postsynaptic potentialsInitial excitatory postsynaptic potentialsReversal potentialGABAB agonist baclofenGABAB antagonist phaclofenGABAA antagonist bicucullineGABAA agonist muscimolParoxysmal epileptiform activityMajor inhibitory neurotransmitterVitro. 2Antagonist phaclofenMembrane conductanceAgonist baclofenAntagonist bicuculline
1988
Characterization of GABA- and glycine-induced currents of solitary rodent retinal ganglion cells in culture
Tauck D, Frosch M, Lipton S. Characterization of GABA- and glycine-induced currents of solitary rodent retinal ganglion cells in culture. Neuroscience 1988, 27: 193-203. PMID: 3200439, DOI: 10.1016/0306-4522(88)90230-8.Peer-Reviewed Original ResearchConceptsGanglion cellsBicuculline methiodideRodent retinal ganglion cellsReversal potentialRetinal ganglion cellsWhole-cell recordingsAgonist-induced currentsRodent retinaD-tubocurarineMicroM GABAMicroM glycineReceptor desensitizationGABAPatch electrodeDesensitizationStrychnineMembrane conductancePicrotoxininMethiodideTaurineCellsSolitary cellsSpace clampTissue cultureResponseIntracellular studies of dopamine neurons in vitro: pacemakers modulated by dopamine
Silva N, Bunney B. Intracellular studies of dopamine neurons in vitro: pacemakers modulated by dopamine. European Journal Of Pharmacology 1988, 149: 307-315. PMID: 3409955, DOI: 10.1016/0014-2999(88)90661-9.Peer-Reviewed Original ResearchConceptsSensitive neuronsInput resistanceAdministration of DADA-sensitive neuronsSelective D2 antagonistPacemaker-like activityHigh input resistanceZona compactaDA actionD2 antagonistDopamine neuronsIntracellular recordingsFiring rateIntracellular studyNeuronsReversal potentialTissue slicesDopamineHyperpolarizationSulpirideAntagonistCompactaAdministration
1987
Actions of acetylcholine in the guinea‐pig and cat medial and lateral geniculate nuclei, in vitro.
McCormick D, Prince D. Actions of acetylcholine in the guinea‐pig and cat medial and lateral geniculate nuclei, in vitro. The Journal Of Physiology 1987, 392: 147-165. PMID: 2833597, PMCID: PMC1192298, DOI: 10.1113/jphysiol.1987.sp016774.Peer-Reviewed Original ResearchConceptsRapid excitatory responseSlow depolarizationApplication of acetylcholineLateral geniculate nucleusGeniculate nucleusMuscarinic hyperpolarizationExcitatory responsesMuscarinic receptorsReversal potentialDorsal lateral geniculate nucleusGeniculate neuronesApparent input conductanceSingle spike activityIntracellular recording techniquesAction of acetylcholineACh-induced hyperpolarizationExtrapolated reversal potentialSingle-spike firingMechanism of actionMembrane potentialBath applicationBurst firingBurst dischargesSynaptic transmissionThalamic slices
1985
Low doses of apomorphine elicit two opposing influences on dopamine cell electrophysiology
Grace A, Bunney B. Low doses of apomorphine elicit two opposing influences on dopamine cell electrophysiology. Brain Research 1985, 333: 285-298. PMID: 3995296, DOI: 10.1016/0006-8993(85)91582-3.Peer-Reviewed Original ResearchConceptsDA cell firingDA cellsLow dosesInput resistanceDA agonistsReversal potentialStriatonigral pathwayCell firingCell firing rateElectrophysiological actionsApomorphine effectApomorphine administrationSlow depolarizationIntracellular recordingsIntravenous administrationDopamine cellsInhibitory inputsApomorphineStriatal cellsAction potentialsFiring rateAgonistsDosesCell dischargeCell electrophysiology
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