2000
Activation of a Ca2+‐permeable cation channel produces a prolonged attenuation of intracellular Ca2+ release in Aplysia bag cell neurones
Magoski N, Knox R, Kaczmarek L. Activation of a Ca2+‐permeable cation channel produces a prolonged attenuation of intracellular Ca2+ release in Aplysia bag cell neurones. The Journal Of Physiology 2000, 522: 271-283. PMID: 10639103, PMCID: PMC2269759, DOI: 10.1111/j.1469-7793.2000.t01-2-00271.x.Peer-Reviewed Original ResearchConceptsVoltage-gated Ca2Non-selective cation channelsRefractory periodCation channelsElectrical stimulationFree salineAbility of nifedipinePresence of nifedipinePresence of TTXIntact abdominal gangliaProlonged refractory periodOnset of refractorinessAfferent inputBrief synaptic stimulationHigh external potassiumPermeable cation channelIntracellular calciumAbdominal ganglionExtracellular Ca2Synaptic stimulationAfterdischargesNormal responseIntracellular Ca2Intracellular storesRepeated stimulation
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 levelsNeurons
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
Cyclic AMP regulates processing of neuropeptide precursor in bag cell neurons ofAplysia
Azhderian E, Kaczmarek L. Cyclic AMP regulates processing of neuropeptide precursor in bag cell neurons ofAplysia. Journal Of Molecular Neuroscience 1990, 2: 61-70. PMID: 1964064, DOI: 10.1007/bf02876912.Peer-Reviewed Original ResearchConceptsBag cell neuronsEgg-laying hormoneCell neuronsCAMP levelsPresence of tetrodotoxinBag cell clustersAdenylate cyclase activator forskolinELH prohormoneCyclase activator forskolinElevation of cAMPMembrane-permeant cAMP analogAbdominal ganglionControl clustersPermeant cAMP analogueAction potentialsNeuroactive peptidesTreatment of cellsProtein synthesis inhibitor anisomycinActivator forskolinNeuronsProhormoneAfterdischargesCyclic AMPTetrodotoxinComparative peptide mapping
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
1983
Calcium entry causes a prolonged refractory period in peptidergic neurons of Aplysia
Kaczmarek L, Kauer J. Calcium entry causes a prolonged refractory period in peptidergic neurons of Aplysia. Journal Of Neuroscience 1983, 3: 2230-2239. PMID: 6631477, PMCID: PMC6564640, DOI: 10.1523/jneurosci.03-11-02230.1983.Peer-Reviewed Original ResearchConceptsOnset of afterdischargeProlonged refractory periodBag cell clustersBag cell neuronsCumulative depolarizationRefractory periodNatural refractorinessCell neuronsCalcium entryAction potentialsConcentration of ionophoreExtracellular tetraethylammonium ionsRepetitive intracellular stimulationPeptidergic bag cell neuronsPleuroabdominal connectivesCell clustersCalcium-deficient mediumAdenylate cyclase activatorCalcium-containing mediumMean durationPeptidergic neuronsAbdominal ganglionAfterdischargesBrief trainsIntracellular stimulation
1980
Microinjection of catalytic subunit of cyclic AMP-dependent protein kinase enhances calcium action potentials of bag cell neurons in cell culture
Kaczmarek LK, Jennings KR, Strumwasser F, Nairn AC, Walter U, Wilson FD, Greengard P. Microinjection of catalytic subunit of cyclic AMP-dependent protein kinase enhances calcium action potentials of bag cell neurons in cell culture. Proceedings Of The National Academy Of Sciences Of The United States Of America 1980, 77: 7487-7491. PMID: 6261262, PMCID: PMC350530, DOI: 10.1073/pnas.77.12.7487.Peer-Reviewed Original ResearchConceptsCalcium action potentialsBag cell neuronsAction potentialsCell neuronsInput resistanceCalcium antagonistsControl injectionsIntracellular injectionAbdominal ganglionPotassium channelsProtein kinaseNeuronsPrimary culturesInjected cellsInjectionIntracellular microinjectionMembrane potentialSubthreshold oscillationsAMP-dependent protein kinaseMicroinjectionCell culturesCyclic AMP-dependent protein kinaseSpike enhancementCatalytic subunitExtracellular mediumPurification and primary structure of two neuroactive peptides that cause bag cell afterdischarge and egg-laying in Aplysia
Heller E, Kaczmarek L, Hunkapiller M, Hood L, Strumwasser F. Purification and primary structure of two neuroactive peptides that cause bag cell afterdischarge and egg-laying in Aplysia. Proceedings Of The National Academy Of Sciences Of The United States Of America 1980, 77: 2328-2332. PMID: 6929554, PMCID: PMC348708, DOI: 10.1073/pnas.77.4.2328.Peer-Reviewed Original ResearchConceptsBag cell neuronsEgg-laying hormoneCell neuronsNeuroactive peptidesBag cell afterdischargePeptide BPleuroabdominal connectivesAbdominal ganglionRecipient animalsNeuronal receptorsHead gangliaVitro recordingsReproductive tractBag cellsGangliaAtrial glandNeuronsAtrial gland peptidesHormoneGlandGland peptideAgarose gel filtrationPeptide AAplysiaPro-Phe
1979
The morphology and coupling of Aplysia bag cells within the abdominal ganglion and in cell culture
Kaczmarek L, Finbow M, Revel J, Strumwasser F. The morphology and coupling of Aplysia bag cells within the abdominal ganglion and in cell culture. Developmental Neurobiology 1979, 10: 535-550. PMID: 521813, DOI: 10.1002/neu.480100604.Peer-Reviewed Original ResearchConceptsBag cell clustersBag cellsAbdominal ganglionLucifer YellowConnective tissueBag cell afterdischargeCell clustersSynchronous action potentialsIntracellular injectionIntact gangliaAction potentialsGangliaPrimary culturesNeurosecretory cellsDistal processesInjected cellsAfterdischargesCell actionGap junctionsSomaDye transferCellsPairs of cellsCell culturesCell processes