2017
Prestin: Molecular Mechanisms Underlying Outer Hair Cell Electromotility
Santos-Sacchi J, Navaratnam D, Raphael R, Oliver D. Prestin: Molecular Mechanisms Underlying Outer Hair Cell Electromotility. Springer Handbook Of Auditory Research 2017, 62: 113-145. DOI: 10.1007/978-3-319-52073-5_5.Peer-Reviewed Original ResearchOuter hair cellsMammalian inner earOuter hair cell electromotilityHair cell electromotilitySLC26 familyMolecular mechanismsMembrane lipidsConformational changesMechanical feedback mechanismMolecular motorsTension sensitivityPrestinHair cellsVoltage-sensor charge movementAnion transportersReceptor potentialProteinMolecular conformational changesInner earStructural determinationIntracellular chlorideCharge movementTraffickingFeedback mechanismMechanism
2015
Pannexin1 channels dominate ATP release in the cochlea ensuring endocochlear potential and auditory receptor potential generation and hearing
Chen J, Zhu Y, Liang C, Chen J, Zhao H. Pannexin1 channels dominate ATP release in the cochlea ensuring endocochlear potential and auditory receptor potential generation and hearing. Scientific Reports 2015, 5: 10762. PMID: 26035172, PMCID: PMC4451810, DOI: 10.1038/srep10762.Peer-Reviewed Original ResearchConceptsCochlear lateral wallATP releaseHearing lossCochlear microphonicsPotential generationReceptor potentialReceptor potential generationHair cell lossLateral wallNon-junctional channelsEP generationDeficient miceCell lossEndocochlear potentialHair cellsPathological processesCochleaPhysiological conditionsJunction genesGap junction genesConnexin hemichannelsConnexin isoformsHearingDeficiencyReleaseStructure of the TRPA1 ion channel suggests regulatory mechanisms
Paulsen CE, Armache JP, Gao Y, Cheng Y, Julius D. Structure of the TRPA1 ion channel suggests regulatory mechanisms. Nature 2015, 520: 511-517. PMID: 25855297, PMCID: PMC4409540, DOI: 10.1038/nature14367.Peer-Reviewed Original ResearchMeSH KeywordsAllosteric RegulationAnalgesicsAnkyrin RepeatAnti-Inflammatory AgentsBinding SitesCalcium ChannelsCryoelectron MicroscopyCytosolHumansModels, MolecularNerve Tissue ProteinsPolyphosphatesProtein StabilityProtein SubunitsStructure-Activity RelationshipTransient Receptor Potential ChannelsTRPA1 Cation ChannelConceptsTRPA1 ion channelsCoil assembly domainIon channelsCovalent protein modificationSingle-particle electronAnti-inflammatory agentsTransient receptor potentialStructure-based designAllosteric domainProtein modificationRegulatory mechanismsChannel regulationNoxious chemical agentsTRPA1 regulationAssembly domainIrritant exposureTRPA1 antagonistInflammatory conditionsTissue injuryTRPA1 functionStructural mechanismsDrug metabolismPotent antagonistReceptor potentialHuman TRPA1
2011
Chloride Dependent Coupling of Molecular to Cellular Mechanics in the Outer Hair Cell of Corti's Organ
Song L, Santos-Sacchi J, Shera C, Olson E. Chloride Dependent Coupling of Molecular to Cellular Mechanics in the Outer Hair Cell of Corti's Organ. AIP Conference Proceedings 2011, 1403: 179-184. DOI: 10.1063/1.3658083.Peer-Reviewed Original ResearchCellular mechanicsConformational changesMotor protein prestinProtein prestinMolecular eventsLateral membranesOHC lateral membraneCellular expressionWhole cellsElectromotilityOuter hair cellsPrestinHair cellsReceptor potentialNonlinear capacitanceMolecular conformational changesIntracellular chloride levelsCellsTight couplingOrgansOHC receptor potentialsExpressionMembraneNormal levelsVivo
1989
Asymmetry in voltage-dependent movements of isolated outer hair cells from the organ of Corti
Santos-Sacchi J. Asymmetry in voltage-dependent movements of isolated outer hair cells from the organ of Corti. Journal Of Neuroscience 1989, 9: 2954-2962. PMID: 2769373, PMCID: PMC6569687, DOI: 10.1523/jneurosci.09-08-02954.1989.Peer-Reviewed Original ResearchConceptsOuter hair cellsWhole-cell voltage-clamp techniqueHair cellsNormal resting potentialsOrgan of CortiVoltage-clamp techniqueCell shorteningAcoustic stimulationReceptor potentialResting potentialsResponse magnitudeOHC movementsReported productionStimulationHyperpolarizationComparable levelsNeural tuningCell length changesDepolarizationLength changesCellsBasilar membraneVoltage stimulation
1982
Intracellular Recordings from Cochlear Outer Hair Cells
Dallos P, Santos-Sacchi J, Flock Å. Intracellular Recordings from Cochlear Outer Hair Cells. Science 1982, 218: 582-584. PMID: 7123260, DOI: 10.1126/science.7123260.Peer-Reviewed Original Research
1977
Electrical and adaptive properties of rod photoreceptors in Bufo marinus. I. Effects of altered extracellular Ca2+ levels.
Lipton S, Ostroy S, Dowling J. Electrical and adaptive properties of rod photoreceptors in Bufo marinus. I. Effects of altered extracellular Ca2+ levels. Journal Of General Physiology 1977, 70: 747-770. PMID: 412914, PMCID: PMC2228514, DOI: 10.1085/jgp.70.6.747.Peer-Reviewed Original ResearchConceptsReceptor sensitivityLight-evoked responsesResponse amplitudeLow calcium RingerMembrane potential levelMembrane potentialExtracellular Ca2Intracellular storesAdapted rodRod sensitivityReceptor potentialElectrical activityRod photoreceptorsRinger's solutionV-log IRingerDark adaptationProlonged exposureSensitivity recoveryRetinaResponse saturationSubstantial depolarizationBufo marinus
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