2019
Prestin kinetics and corresponding frequency dependence augment during early development of the outer hair cell within the mouse organ of Corti
Bai JP, Navaratnam D, Santos-Sacchi J. Prestin kinetics and corresponding frequency dependence augment during early development of the outer hair cell within the mouse organ of Corti. Scientific Reports 2019, 9: 16460. PMID: 31712635, PMCID: PMC6848539, DOI: 10.1038/s41598-019-52965-1.Peer-Reviewed Original ResearchConceptsOuter hair cellsPostnatal dayVoltage-sensor charge movementAltricial animalsPostnatal developmentCochlear placeElectrical correlatesHair cellsMouse organsCochlear amplificationEarly developmentAuditory frequencyPrestin activityAuditory capabilitiesCellsCharge movementHigh frequencyResponse increasesPrestin functionMiceActivityMonthsCourseThe speed limit of outer hair cell electromechanical activity
Santos-Sacchi J. The speed limit of outer hair cell electromechanical activity. HNO 2019, 67: 159-164. PMID: 30747242, DOI: 10.1007/s00106-019-0615-9.Peer-Reviewed Original Research
2015
Auditory Pathology in a Transgenic mtTFB1 Mouse Model of Mitochondrial Deafness
McKay SE, Yan W, Nouws J, Thormann MJ, Raimundo N, Khan A, Santos-Sacchi J, Song L, Shadel GS. Auditory Pathology in a Transgenic mtTFB1 Mouse Model of Mitochondrial Deafness. American Journal Of Pathology 2015, 185: 3132-3140. PMID: 26552864, PMCID: PMC5801480, DOI: 10.1016/j.ajpath.2015.08.014.Peer-Reviewed Original ResearchMeSH KeywordsAMP-Activated Protein KinasesAnimalsApoptosisDeafnessDisease Models, AnimalDNA, MitochondrialEvoked Potentials, Auditory, Brain StemHair Cells, Auditory, InnerMice, Inbred C57BLMice, KnockoutMice, TransgenicMitochondrial DiseasesMutationOrgan of CortiReaction TimeSignal TransductionSpiral GanglionStria VascularisTranscription FactorsConceptsAMP kinaseReactive oxygen species-mediated activationTranscription factor E2F1A1555G mutationAuditory pathologyHair cellsTFB1MHearing loss phenotypeRRNA geneAMPK-α1AMPK activityProlonged wave I latencyLoss phenotypeMitochondrial pathologyNonsyndromic deafnessTransgenic mouse strainWave I latencySpiral ganglion neuronsProgressive hearing lossMitochondrial deafnessPotential therapeutic valueDNA causeG mutationOuter hair cellsI latency
2011
Gene Expression Gradients along the Tonotopic Axis of the Chicken Auditory Epithelium
Frucht CS, Uduman M, Kleinstein SH, Santos-Sacchi J, Navaratnam DS. Gene Expression Gradients along the Tonotopic Axis of the Chicken Auditory Epithelium. Journal Of The Association For Research In Otolaryngology 2011, 12: 423-435. PMID: 21399991, PMCID: PMC3123449, DOI: 10.1007/s10162-011-0259-2.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnimals, NewbornCalcium ChannelsChickensCyclic AMP-Dependent Protein KinasesGene Expression ProfilingGene Expression Regulation, DevelopmentalHair Cells, AuditoryLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsMicroRNAsModels, AnimalOrgan of CortiProtein Kinase CSodium ChannelsConceptsGene expression gradientsAuditory epitheliumKinases protein kinase CChicken auditory epitheliumExpression gradientsAvian auditory epitheliumBasilar papillaFold-change cutoffActivity of kinasesIon channel genesProtein kinase CChicken basilar papillaGene setsGenetic basisEnrichment analysisExpression patternsGene expressionGeneSpring softwareChannel genesMechanism of inductionKinase CGenesMicroarray dataDifferential activityQuantitative PCR
2010
Gene Expression Analysis of Forskolin Treated Basilar Papillae Identifies MicroRNA181a as a Mediator of Proliferation
Frucht CS, Uduman M, Duke JL, Kleinstein SH, Santos-Sacchi J, Navaratnam DS. Gene Expression Analysis of Forskolin Treated Basilar Papillae Identifies MicroRNA181a as a Mediator of Proliferation. PLOS ONE 2010, 5: e11502. PMID: 20634979, PMCID: PMC2901389, DOI: 10.1371/journal.pone.0011502.Peer-Reviewed Original ResearchConceptsNew hair cellsAuditory epitheliumChicken auditory epitheliumHair cellsInner ear developmentHair cell regenerationGene expression analysisAuditory hair cellsEar developmentExpression analysisMyosin VIEnrichment analysisCycle controlGene expressionMolecular eventsSingle microRNAMediator of proliferationRelevant pathwaysFunctional experimentsPost-hatch chicksRegenerating tissueMammalsGenesBrdU incorporationCell regenerationPrestin Surface Expression and Activity Are Augmented by Interaction with MAP1S, a Microtubule-associated Protein*
Bai JP, Surguchev A, Ogando Y, Song L, Bian S, Santos-Sacchi J, Navaratnam D. Prestin Surface Expression and Activity Are Augmented by Interaction with MAP1S, a Microtubule-associated Protein*. Journal Of Biological Chemistry 2010, 285: 20834-20843. PMID: 20418376, PMCID: PMC2898336, DOI: 10.1074/jbc.m110.117853.Peer-Reviewed Original Research
2006
Tuning in to the Amazing Outer Hair Cell: Membrane Wizardry with a Twist and Shout
He D, Zheng J, Kalinec F, Kakehata S, Santos-Sacchi J. Tuning in to the Amazing Outer Hair Cell: Membrane Wizardry with a Twist and Shout. The Journal Of Membrane Biology 2006, 209: 119-134. PMID: 16773497, DOI: 10.1007/s00232-005-0833-9.Peer-Reviewed Original Research
2003
New tunes from Corti’s organ: the outer hair cell boogie rules
Santos-Sacchi J. New tunes from Corti’s organ: the outer hair cell boogie rules. Current Opinion In Neurobiology 2003, 13: 459-468. PMID: 12965294, DOI: 10.1016/s0959-4388(03)00100-4.Peer-Reviewed Original ResearchConceptsSpecial cell typesHair cellsOuter hair cell electromotilityHair cell electromotilityMolecular identificationCell typesMammalsMechanism of actionOuter hair cellsAdditional mechanismVertebratesCellsAmplificationMechanismKnockoutElectromotilityOrgansSuch amplificationCorti's organAcoustic stimuliRemarkable progress
2000
Nitric oxide uncouples gap junctions of supporting Deiters cells from Corti's organ
Blasits S, Maune S, Santos-Sacchi J. Nitric oxide uncouples gap junctions of supporting Deiters cells from Corti's organ. Pflügers Archiv - European Journal Of Physiology 2000, 440: 710-712. PMID: 11007311, DOI: 10.1007/s004240000355.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCyclic GMPGap JunctionsGuinea PigsNitric OxideNitric Oxide DonorsNitroprussideOrgan of CortiConceptsDeiters' cellsCorti's organNO/cGMP pathwayNitric oxide donor sodium nitroprussideWhole-cell voltage-clamp conditionsNO synthase inhibitorUncouple gap junctionsNormal sensory functionDonor sodium nitroprussideGap junctionsVoltage-clamp conditionsOtotoxic mechanismsMinutes of applicationCGMP pathwayGap junctional communicationSodium nitroprussideSynthase inhibitorCochlear homeostasisSensory functionElectrical uncouplingNitric oxideCGMP analogJunctional communicationOrgansCellsVoltage Gating of Gap Junctions in Cochlear Supporting Cells: Evidence for Nonhomotypic Channels
Zhao H, Santos-Sacchi J. Voltage Gating of Gap Junctions in Cochlear Supporting Cells: Evidence for Nonhomotypic Channels. The Journal Of Membrane Biology 2000, 175: 17-24. PMID: 10811964, DOI: 10.1007/s002320001051.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsElectrophysiologyGap JunctionsGuinea PigsIon Channel GatingIon ChannelsOrgan of CortiCell coupling in Corti's organ
Santos-Sacchi J. Cell coupling in Corti's organ. Brain Research Reviews 2000, 32: 167-171. PMID: 10751666, DOI: 10.1016/s0165-0173(99)00077-6.Peer-Reviewed Original Research
1999
Auditory collusion and a coupled couple of outer hair cells
Zhao H, Santos-Sacchi J. Auditory collusion and a coupled couple of outer hair cells. Nature 1999, 399: 359-362. PMID: 10360573, DOI: 10.1038/20686.Peer-Reviewed Original Research
1994
Cell coupling in the supporting cells of Corti's organ: Sensitivity to intracellular H+ and Ca+2
Sato Y, Santos-Sacchi J. Cell coupling in the supporting cells of Corti's organ: Sensitivity to intracellular H+ and Ca+2. Hearing Research 1994, 80: 21-24. PMID: 7852199, DOI: 10.1016/0378-5955(94)90004-3.Peer-Reviewed Original Research
1991
Isolated supporting cells from the organ of Corti: Some whole cell electrical characteristics and estimates of gap junctional conductance
Santos-Sacchi J. Isolated supporting cells from the organ of Corti: Some whole cell electrical characteristics and estimates of gap junctional conductance. Hearing Research 1991, 52: 89-98. PMID: 2061216, DOI: 10.1016/0378-5955(91)90190-k.Peer-Reviewed Original ResearchConceptsInput resistanceWhole-cell voltage clamp studiesAverage input resistanceHensen's cellsOrgan of CortiVoltage-clamp studiesGuinea pig organJunctional resistanceClamp studiesCell levelPig organsSingle-cell levelGap junctional conductanceG omegaElectrical activityExternal TEACell couplingCortiJunctional conductanceCellsOrgansSensitive indicatorSmall groupCell values
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
1987
Electrical coupling differs in the in vitro and in vivo organ of Corti
Santos-Sacchi J. Electrical coupling differs in the in vitro and in vivo organ of Corti. Hearing Research 1987, 25: 227-232. PMID: 3558131, DOI: 10.1016/0378-5955(87)90094-3.Peer-Reviewed Original ResearchConceptsOrgan of CortiBony cochleaVivo preparationInner earLateral wallGuinea pig organAnesthetized animalsPig organsStria vascularisEndolymphatic potentialCortiReissner's membraneMedium 199Perfusion chamberCochleaVivo experimentsApical sideOrgansKCl electrodesM KCl electrodesElectrical couplingUnique microenvironmentCellsEarThird turn
1986
Dye coupling in the organ of Corti
Santos-Sacchi J. Dye coupling in the organ of Corti. Cell And Tissue Research 1986, 245: 525-529. PMID: 3757014, PMCID: PMC6042516, DOI: 10.1007/bf00218553.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell MembraneFluoresceinFluoresceinsFluorescent DyesGuinea PigsIsoquinolinesMembrane PotentialsOrgan of CortiThe temperature dependence of electrical coupling in the organ of Corti
Santos-Sacchi J. The temperature dependence of electrical coupling in the organ of Corti. Hearing Research 1986, 21: 205-211. PMID: 2424883, DOI: 10.1016/0378-5955(86)90219-4.Peer-Reviewed Original Research
1985
The effects of cytoplasmic acidification upon electrical coupling in the organ of Corti
Santos-Sacchi J. The effects of cytoplasmic acidification upon electrical coupling in the organ of Corti. Hearing Research 1985, 19: 207-215. PMID: 3934121, DOI: 10.1016/0378-5955(85)90140-6.Peer-Reviewed Original Research
1984
A re-evaluation of cell coupling in the organ of Corti
Santos-Sacchi J. A re-evaluation of cell coupling in the organ of Corti. Hearing Research 1984, 14: 203-204. PMID: 6746433, DOI: 10.1016/0378-5955(84)90019-4.Peer-Reviewed Original Research