2012
Regulation of Neuronal Excitability by Interaction of Fragile X Mental Retardation Protein with Slack Potassium Channels
Zhang Y, Brown MR, Hyland C, Chen Y, Kronengold J, Fleming MR, Kohn AB, Moroz LL, Kaczmarek LK. Regulation of Neuronal Excitability by Interaction of Fragile X Mental Retardation Protein with Slack Potassium Channels. Journal Of Neuroscience 2012, 32: 15318-15327. PMID: 23115170, PMCID: PMC3518385, DOI: 10.1523/jneurosci.2162-12.2012.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnisomycinAplysiaCHO CellsCloning, MolecularCricetinaeCricetulusElectrophysiological PhenomenaFragile X Mental Retardation ProteinImmunohistochemistryImmunoprecipitationNeuronsPatch-Clamp TechniquesPotassium ChannelsProtein Synthesis InhibitorsRNA InterferenceRNA, Small InterferingSodiumSynapsesConceptsNeuronal excitabilitySlack potassium channelsTetrodotoxin-sensitive componentCurrent-clamp recordingsSlack channelsMental retardation proteinBag cell neuronsSustained componentIntracellular injectionNeuronal firingInhibitory periodSynaptic stimulationPotassium currentCell neuronsAction potentialsOutward currentsPotassium channelsProlonged changesNeuronsAplysia bag cell neuronsProtein synthesis inhibitor anisomycinExcitabilityFragile X Mental Retardation ProteinCommon formIntellectual disability
2010
The Slack Sodium-Activated Potassium Channel Provides a Major Outward Current in Olfactory Neurons of Kv1.3−/− Super-Smeller Mice
Lu S, Das P, Fadool DA, Kaczmarek LK. The Slack Sodium-Activated Potassium Channel Provides a Major Outward Current in Olfactory Neurons of Kv1.3−/− Super-Smeller Mice. Journal Of Neurophysiology 2010, 103: 3311-3319. PMID: 20393063, PMCID: PMC2888249, DOI: 10.1152/jn.00607.2009.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornBiophysicsCardiovascular AgentsCells, CulturedElectric StimulationGene Expression RegulationIn Vitro TechniquesKv1.3 Potassium ChannelMembrane PotentialsMiceMice, Inbred C57BLMice, KnockoutNerve Tissue ProteinsNeuronsOlfactory BulbPatch-Clamp TechniquesPotassium ChannelsPotassium Channels, Sodium-ActivatedPyrimidinesRNA InterferenceSodium Channel BlockersTetrodotoxinTransfectionConceptsMitral cellsOlfactory bulbOutward currentsOlfactory neuronsWildtype animalsPotassium channelsMajor outward currentVoltage-clamp recordingsVoltage-dependent potassium channelsNet outward currentIntracellular sodiumOB slicesPotassium channel genesCompensatory increaseFiring patternsWestern blottingRNA interference approachPrimary culturesEnhanced expressionDetection of odorsSame treatmentChannel genesMiceNeuronsOlfactory phenotypes
2002
Prolonged Activation of Ca2+-Activated K+Current Contributes to the Long-Lasting Refractory Period ofAplysia Bag Cell Neurons
Zhang Y, Magoski NS, Kaczmarek LK. Prolonged Activation of Ca2+-Activated K+Current Contributes to the Long-Lasting Refractory Period ofAplysia Bag Cell Neurons. Journal Of Neuroscience 2002, 22: 10134-10141. PMID: 12451114, PMCID: PMC6758731, DOI: 10.1523/jneurosci.22-23-10134.2002.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAplysiaCalciumCells, CulturedElectric StimulationEnzyme ActivatorsEnzyme InhibitorsLarge-Conductance Calcium-Activated Potassium ChannelsNeural InhibitionNeuronsPatch-Clamp TechniquesPhloretinPotassiumPotassium Channel BlockersPotassium Channels, Calcium-ActivatedProtein Kinase CRefractory Period, ElectrophysiologicalSphingosineTetradecanoylphorbol AcetateConceptsBag cell neuronsCell neuronsRefractory periodBK currentsProtein kinase COnset of afterdischargeBK channel activityApplication of phloretinBK channel activatorsProlonged refractory periodAbility of stimulationRole of Ca2Blocker paxillinePharmacological characteristicsChannel activatorIntracellular Ca2Prolonged increaseOutward currentsInhibitor of PKCAfterdischargesNeuronsAdditional stimulationProlonged activationActivator of PKCChannel activity
1999
Shaw‐like potassium currents in the auditory rhombencephalon throughout embryogenesis
Hendriks R, Morest D, Kaczmarek L. Shaw‐like potassium currents in the auditory rhombencephalon throughout embryogenesis. Journal Of Neuroscience Research 1999, 58: 791-804. PMID: 10583910, DOI: 10.1002/(sici)1097-4547(19991215)58:6<791::aid-jnr6>3.0.co;2-3.Peer-Reviewed Original ResearchConceptsPotassium currentNucleus magnocellularisOutward currentsWhole-cell patch recordingsInitial transient componentTransient outward currentsEarly neuronal developmentEarly neuronal differentiationHigh activation thresholdFirst synapsesAuditory nucleiPatch recordingsPotassium channel genesSynaptic functionCharacteristic response propertiesSynapses formNeuronal developmentNeuronal differentiationActivation thresholdDevelopmental appearanceTetraethylammoniumMagnocellularisEarly ageChannel genesNeuroblastsRole in neuronal cell migration for high‐threshold potassium currents in the chicken hindbrain
Hendriks R, Morest D, Kaczmarek L. Role in neuronal cell migration for high‐threshold potassium currents in the chicken hindbrain. Journal Of Neuroscience Research 1999, 58: 805-814. PMID: 10583911, DOI: 10.1002/(sici)1097-4547(19991215)58:6<805::aid-jnr7>3.0.co;2-v.Peer-Reviewed Original ResearchConceptsChannel blockersPotassium currentWhole-cell patch-clamp recordingsPotassium conductanceN-type calcium channelsPotassium channelsHigh-threshold potassium currentsCalcium channel blockersSensitive potassium channelsPotassium channel blockerPatch-clamp recordingsTetraethylammonium chlorideChronic blockadeNovel potassium channelNeuronal cell migrationTEA exposureCalcium channelsClamp recordingsEmbryonic neuronsSynaptic functionOutward currentsNeuronal migrationElectrical excitabilityMigratory activityIndividual neuroblasts
1993
The 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
1990
Control of potassium currents and cyclic AMP levels by autoactive neuropeptides in Aplysia neurons
Loechner K, Kaczmarek L. Control of potassium currents and cyclic AMP levels by autoactive neuropeptides in Aplysia neurons. Brain Research 1990, 532: 1-6. PMID: 2178030, DOI: 10.1016/0006-8993(90)91733-w.Peer-Reviewed Original ResearchConceptsVoltage-dependent potassium currentsCyclic AMP levelsBag cell neuronsPotassium currentCell neuronsAMP levelsAlpha-BCPWhole-cell patch-clamp techniqueCell patch-clamp techniqueBag cell afterdischargeTransient voltage-dependent potassium currentPatch-clamp techniqueDelayed potassium currentPharmacologic elevationClamp techniqueOutward currentsAfterdischargesNeuronsCell peptidesAplysia neuronsNeuropeptidesBeta-BCPConsistent effectSecond messengerAlpha
1987
Alpha bag cell peptide directly modulates the excitability of the neurons that release it
Kauer J, Fisher T, Kaczmarek L. Alpha bag cell peptide directly modulates the excitability of the neurons that release it. Journal Of Neuroscience 1987, 7: 3623-3632. PMID: 2824716, PMCID: PMC6569037, DOI: 10.1523/jneurosci.07-11-03623.1987.Peer-Reviewed Original ResearchConceptsAlpha-bag cell peptideBag cell neuronsAlpha-BCPCell neuronsBag cell peptidesPotassium currentCell peptidesVoltage-dependent potassium currentsCAMP levelsVoltage-dependent outward currentIntact abdominal gangliaBag cell clustersAdenylate cyclase activator forskolinAbility of forskolinCyclase activator forskolinLevels of cAMPVoltage-clamp experimentsElectrophysiological actionsIntracellular cAMP levelsImmunohistochemical stainingIntact gangliaAbdominal ganglionPhosphodiesterase inhibitorPharmacological elevationOutward currents
1986
Multiple components of delayed potassium current in peptidergic neurons of Aplysia: modulation by an activator of adenylate cyclase
Strong J, Kaczmarek L. Multiple components of delayed potassium current in peptidergic neurons of Aplysia: modulation by an activator of adenylate cyclase. Journal Of Neuroscience 1986, 6: 814-822. PMID: 2420948, PMCID: PMC6568473, DOI: 10.1523/jneurosci.06-03-00814.1986.Peer-Reviewed Original ResearchConceptsAction potentialsApplication of forskolinBag cell neuronsPotassium currentCell neuronsOutward currentsWhole-cell patch-clamp techniqueBag cell afterdischargePatch-clamp techniqueEffect of forskolinElevation of cAMPPeptidergic neuronsCalcium entryClamp techniqueAfterdischargesReproductive tractMsec depolarizationsAdenylate cyclasePrimary culturesHigh intracellular concentrationsNeuronsMin periodRepetitive activitySpike widthForskolin
1984
A voltage-clamp analysis of currents underlying cyclic AMP-induced membrane modulation in isolated peptidergic neurons of Aplysia
Kaczmarek L, Strumwasser F. A voltage-clamp analysis of currents underlying cyclic AMP-induced membrane modulation in isolated peptidergic neurons of Aplysia. Journal Of Neurophysiology 1984, 52: 340-349. PMID: 6090605, DOI: 10.1152/jn.1984.52.2.340.Peer-Reviewed Original ResearchConceptsBag cell neuronsCell neuronsCyclic AMP analoguePotassium currentOutward currentsNormal ionic mediumOnset of afterdischargePhosphodiesterase-resistant cAMP analoguePeak inward currentsAMP analogueBag cell clustersDelayed potassium currentMinority of cellsSpontaneous dischargeCalcium currentPeptidergic neuronsVoltage-clamp analysisCell culturesTwo-electrode voltage clampInward currentsSodium currentNegative slope resistanceA-currentMarked reductionNeurons