2023
The Effects of Aging on Rod Bipolar Cell Ribbon Synapses
Shrestha A, Rameshkumar N, Boff J, Rajmanna R, Chandrasegaran T, Frederick C, Zenisek D, Vaithianathan T. The Effects of Aging on Rod Bipolar Cell Ribbon Synapses. Cells 2023, 12: 2385. PMID: 37830599, PMCID: PMC10572008, DOI: 10.3390/cells12192385.Peer-Reviewed Original ResearchConceptsRod bipolar cellsRibbon synapsesSynaptic ribbonsCalcium currentBipolar cellsRetinal ganglion cellsAge-related morphological changesBipolar cell ribbon synapsesBipolar cell terminalsGlobal health concernAge-related visual impairmentAge-related changesPlexiform layerGanglion cellsInner nuclearCochlear cellsSensory alterationsCell terminalsVisual impairmentFunctional changesHealth concernCalcium signalsSynapsesCalcium dynamicsRetina
2022
Membrane potential drives the exit from pluripotency and cell fate commitment via calcium and mTOR
Sempou E, Kostiuk V, Zhu J, Cecilia Guerra M, Tyan L, Hwang W, Camacho-Aguilar E, Caplan M, Zenisek D, Warmflash A, Owens N, Khokha M. Membrane potential drives the exit from pluripotency and cell fate commitment via calcium and mTOR. Nature Communications 2022, 13: 6681. PMID: 36335122, PMCID: PMC9637099, DOI: 10.1038/s41467-022-34363-w.Peer-Reviewed Original ResearchConceptsPluripotent cellsAdult tissue homeostasisCell fate commitmentDifferentiated cell fatesLeft-right patterningPluripotent embryonic cellsHuman embryonic stem cellsTemporal transcriptome analysisGene regulatory networksExpense of differentiationEmbryonic stem cellsGerm layer differentiationMembrane depolarizationFate commitmentPluripotent stateCell fateTranscriptome analysisRegulatory networksMyogenic lineageEmbryonic developmentTissue homeostasisDifferentiated fateEmbryonic cellsCandidate genesPluripotency
2000
The Role of Mitochondria in Presynaptic Calcium Handling at a Ribbon Synapse
Zenisek D, Matthews G. The Role of Mitochondria in Presynaptic Calcium Handling at a Ribbon Synapse. Neuron 2000, 25: 229-237. PMID: 10707986, DOI: 10.1016/s0896-6273(00)80885-5.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsCalciumCalcium-Transporting ATPasesCarbonyl Cyanide m-Chlorophenyl HydrazoneFluorescent DyesFura-2GoldfishLanthanumMembrane PotentialsMitochondriaPatch-Clamp TechniquesPotassiumRetinaRhodamine 123SodiumSynapsesSynaptic TransmissionUncoupling AgentsVision, OcularConceptsSynaptic terminalsCalcium handlingBipolar cell synaptic terminalsCalcium clearance mechanismsRetinal bipolar neuronsSingle synaptic terminalsClearance of Ca2Patch-clamp techniqueATP-dependent Ca2Bipolar neuronsRibbon synapseClamp techniqueClearance mechanismsCalcium uptakeLarge Ca2Role of mitochondriaMitochondrial uptakeCa2Mitochondria actMembrane extrusionNeuronsUptake
1998
Calcium action potentials in retinal bipolar neurons
ZENISEK D, MATTHEWS G. Calcium action potentials in retinal bipolar neurons. Visual Neuroscience 1998, 15: 69-75. PMID: 9456506, DOI: 10.1017/s0952523898151064.Peer-Reviewed Original ResearchConceptsBipolar neuronsSynaptic terminalsAction potentialsCalcium-dependent action potentialsCalcium channel blockersRetinal bipolar neuronsCalcium action potentialsPerforated-patch recordingsNeurotransmitter GABAIntracellular calciumGoldfish retinaIntraterminal calciumCalcium channelsCalcium transientsRegenerative depolarizationTransient increaseNeuronsElectrical excitabilityFish retinaCalcium actionSpontaneous increaseRetinaElectrical recordingsExternal applicationCalcium