2000
Molecular identification and functional characterization of Mdr1a in rat cholangiocytes
Gigliozzi A, Fraioli F, Sundaram P, Lee J, Mennone A, Alvaro D, Boyer J. Molecular identification and functional characterization of Mdr1a in rat cholangiocytes. Gastroenterology 2000, 119: 1113-1122. PMID: 11040198, DOI: 10.1053/gast.2000.18156.Peer-Reviewed Original ResearchMeSH KeywordsAcridinesAnimalsATP Binding Cassette Transporter, Subfamily BATP Binding Cassette Transporter, Subfamily B, Member 1ATP-Binding Cassette TransportersBile DuctsCell DivisionCell MembraneCytosolDrug Resistance, MultipleIn Vitro TechniquesIsoquinolinesKineticsMaleMicroscopy, ConfocalRatsRats, Sprague-DawleyReverse Transcriptase Polymerase Chain ReactionRhodamine 123RNA, MessengerTetrahydroisoquinolinesTranscription, GeneticVanadatesVerapamilConceptsCholangiocyte cell linePlasma membrane proteinsRat cholangiocyte cell lineCell linesCytosolic domainMembrane proteinsRhodamine 123Functional characterizationGene productsRNA transcriptsMolecular identificationMembrane subfractionsPair fragmentWestern blot analysisWestern analysisApical membraneFunctional assaysFunctional evidenceBlot analysisConfocal microscopyP-glycoprotein inhibitor verapamilRat cholangiocytesLipophilic xenobioticsReverse transcription-polymerase chain reactionDose-dependent manner
1999
Characterization of ion transport mechanisms involved in bombesin-stimulated biliary secretion in rat cholangiocytes
Cho W, Boyer J. Characterization of ion transport mechanisms involved in bombesin-stimulated biliary secretion in rat cholangiocytes. Journal Of Hepatology 1999, 30: 1045-1051. PMID: 10406182, DOI: 10.1016/s0168-8278(99)80258-x.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAcetazolamideAnimalsBarium CompoundsBileBile DuctsBombesinCarbonic Anhydrase InhibitorsChloride ChannelsChloridesIn Vitro TechniquesIon TransportMaleMicroscopy, VideoNitrobenzoatesPotassium ChannelsRatsRats, Sprague-DawleyTetraethylammonium
1998
Intracellular pH regulation in bombesin-stimulated secretion in isolated bile duct units from rat liver
Cho W, Mennone A, Boyer J. Intracellular pH regulation in bombesin-stimulated secretion in isolated bile duct units from rat liver. American Journal Of Physiology 1998, 275: g1028-g1036. PMID: 9815033, DOI: 10.1152/ajpgi.1998.275.5.g1028.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntiportersBicarbonatesBile Ducts, IntrahepaticBombesinCarrier ProteinsChloride-Bicarbonate AntiportersChloridesFluoresceinsFluorescent DyesHEPESHydrogen-Ion ConcentrationIn Vitro TechniquesMaleModels, BiologicalRatsRats, Sprague-DawleySodiumSodium-Bicarbonate SymportersSodium-Hydrogen ExchangersConceptsHCO-3 secretionBile duct unitsDuct unitsAcid-extruding mechanismsEffect of bombesinRat liverCl-/HCOBombesin-stimulated secretionRegulation of intracellularBiliary secretionNormal rat liverBombesinCholangiocytesSecretionUnderlying mechanismLiverBasalPH regulationCounterregulatoryNeuropeptidesExchange activityActivityRole of glutathione in hepatic bile formation during reperfusion after cold ischemia of the rat liver
Koeppel T, Trauner M, Albert M, Arrese M, Rios-Velez L, Boyer J. Role of glutathione in hepatic bile formation during reperfusion after cold ischemia of the rat liver. Journal Of Hepatology 1998, 28: 812-819. PMID: 9625316, DOI: 10.1016/s0168-8278(98)80231-6.Peer-Reviewed Original ResearchConceptsBiliary glutathione excretionBile duct injuryCold ischemiaBile flowHepatic bile formationDuct injuryLiver transplantationBiliary tractBiliary excretionRat liverGlutathione excretionBasal bile flow ratesBile formationBile acid-independent bile flowOxidative stressLate reperfusion periodBile duct damageBile flow rateOnset of reperfusionIndependent bile flowBile duct morphologyBiliary glutathione concentrationsWistar rat liverLiver reperfusionDuct damage
1997
ATP regulation of a swelling‐activated osmolyte channel in skate hepatocytes
Ballatori N, Boyer J. ATP regulation of a swelling‐activated osmolyte channel in skate hepatocytes. Journal Of Experimental Zoology 1997, 279: 471-475. PMID: 9392868, DOI: 10.1002/(sici)1097-010x(19971201)279:5<471::aid-jez9>3.0.co;2-l.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsAnionsHypotonic SolutionsIn Vitro TechniquesIon ChannelsLiverSkates, FishTaurineWater-Electrolyte BalanceConceptsChannel blockersTaurine effluxRegulatory volume decreaseVolume-activated taurine effluxRelease of taurineSkate hepatocytesIntracellular ATPIon channel blockersChloride permeability ratioIntracellular ATP levelsControl levelsOsmolyte channelIntracellular organic osmolytesWhole cell preparationsCell preparationsATP levelsBlockersHypotonic swellingChannel openingHepatocytesVolume decreaseAdditional mechanismEfflux
1995
Cytoskeletal organization in clusters of isolated polarized skate hepatocytes: Structural and functional evidence for microtubule‐dependent transcytosis
Henson J, Capuano S, Nesbitt D, Hager D, Nundy S, Miller D, Ballatori N, Boyer J. Cytoskeletal organization in clusters of isolated polarized skate hepatocytes: Structural and functional evidence for microtubule‐dependent transcytosis. Journal Of Experimental Zoology 1995, 271: 273-284. PMID: 7722471, DOI: 10.1002/jez.1402710405.Peer-Reviewed Original Research
1994
Effects of protein kinase C and cytosolic Ca2+ on exocytosis in the isolated perfused rat liver
Bruck R, Nathanson M, Roelofsen H, Boyer J. Effects of protein kinase C and cytosolic Ca2+ on exocytosis in the isolated perfused rat liver. Hepatology 1994, 20: 1032-1040. PMID: 7927205, DOI: 10.1002/hep.1840200436.Peer-Reviewed Original ResearchConceptsProtein kinase CKinase CApical exocytosisRegulation of exocytosisProtein kinase C inhibitor HHorseradish peroxidase concentrationCytosolic Ca2ExocytosisCell typesInhibitor HProtein kinase C activator phorbol dibutyrateHorseradish peroxidase excretionPhorbol dibutyrateCa2Rat liverRelative importanceNet excretionPeroxidase concentrationsHepatocytesRegulation of activity and apical targeting of the Cl-/HCO3- exchanger in rat hepatocytes.
Benedetti A, Strazzabosco M, Ng O, Boyer J. Regulation of activity and apical targeting of the Cl-/HCO3- exchanger in rat hepatocytes. Proceedings Of The National Academy Of Sciences Of The United States Of America 1994, 91: 792-796. PMID: 8290601, PMCID: PMC43035, DOI: 10.1073/pnas.91.2.792.Peer-Reviewed Original ResearchConceptsApical targetingExchange activityRegulation of activityMembrane localizationCl-/HCO3Dibutyryl cAMPProtein kinase C agonistsRat hepatocytesProtein kinase C agonist phorbolEcto-ATPaseConfocal microscopyCanalicular domainC agonistsProteinVesiclesTargetingCanalicular localizationLocalizationCAMPHepatocyte coupletsHepatocytesActivityRegulationPhorbolColchicine
1993
Effect of ursodeoxycholic acid on intracellular pH regulation in isolated rat bile duct epithelial cells
Alvaro D, Mennone A, Boyer J. Effect of ursodeoxycholic acid on intracellular pH regulation in isolated rat bile duct epithelial cells. American Journal Of Physiology 1993, 265: g783-g791. PMID: 8238362, DOI: 10.1152/ajpgi.1993.265.4.g783.Peer-Reviewed Original ResearchConceptsBile duct epithelial cellsUrsodeoxycholic acidDuct epithelial cellsBDE cellsHCO3- excretionEffect of UDCAEpithelial cellsHCO3- exchangeCholic acidKrebs-Ringer bicarbonateUDCA infusionUDCA withdrawalRat bile duct epithelial cellsKRB mediumHCO3- symportNormal rat liverIntracellular pH regulationHCO3- secretionSodium tauroursodeoxycholateSecondary activationBasal levelsPresence of HCO3TauroursodeoxycholateRat liverHypercholeresisIntracellular alkalinization stimulates bile flow and vesicular-mediated exocytosis in IPRL
Bruck R, Benedetti A, Strazzabosco M, Boyer J. Intracellular alkalinization stimulates bile flow and vesicular-mediated exocytosis in IPRL. American Journal Of Physiology 1993, 265: g347-g353. PMID: 8368316, DOI: 10.1152/ajpgi.1993.265.2.g347.Peer-Reviewed Original ResearchMeSH Keywords4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic Acid4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAlkaliesAnimalsAnionsBariumBicarbonatesBileBiological TransportColchicineExocytosisHorseradish PeroxidaseHydrogen-Ion ConcentrationIn Vitro TechniquesIntracellular MembranesLiverMalePotassium ChannelsRatsRats, Sprague-DawleyConceptsBiliary HCO3- excretionBile flowHCO3- excretionIntracellular alkalinizationHCO3- exchangerAcute alkaline loadVesicle-mediated exocytosisBiliary excretionTransient increasePH recoveryAlkaline loadMembrane depolarizationRat liverChannel blocker BaCl2Intact liverLiverAlkalinizationMM NH4ClHCO3- concentrationDisulfonic acidDIDSRat hepatocytesColchicinePretreatmentExocytosisEffects of tauroursodeoxycholic acid on cytosolic Ca2+ signals in isolated rat hepatocytes
Beuers U, Nathanson M, Boyer J. Effects of tauroursodeoxycholic acid on cytosolic Ca2+ signals in isolated rat hepatocytes. Gastroenterology 1993, 104: 604-612. PMID: 8425704, DOI: 10.1016/0016-5085(93)90433-d.Peer-Reviewed Original ResearchConceptsEffect of TUDCATauroursodeoxycholic acidAdministration of TUDCAIP3-independent mechanismCytosolic free calciumIP3-sensitive Ca2Trihydroxy bile acidsCholestatic disordersHepatocyte secretionTreatment periodExtracellular Ca2Bile acidsTaurolithocholic acidMumol/Rat hepatocytesFree calciumBasal levelsTransient increaseCytosolic Ca2Levels of inositolFree mediumPhysiological concentrationsIsolated rat hepatocytesHepatocytesFourfold increase
1992
Papaverine inhibits transcytotic vesicle transport and lipid excretion into bile in isolated perfused rat liver
Hayakawa T, Katagiri K, Hoshino M, Nakai T, Ohiwa T, Kumai T, Miyaji M, Takeuchi T, Corasanti J, Boyer J. Papaverine inhibits transcytotic vesicle transport and lipid excretion into bile in isolated perfused rat liver. Hepatology 1992, 16: 1036-1042. PMID: 1398483, DOI: 10.1002/hep.1840160429.Peer-Reviewed Original ResearchConceptsSodium taurocholate infusionBiliary excretionTaurocholate infusionPhosphodiesterase inhibitorBile acidsNonspecific smooth muscle relaxantSmooth muscle relaxantRat liver modelRat liverLipid excretionContinuous infusionBile flowMuscle relaxantsPapaverine inhibitsConstant infusionHorseradish peroxidaseInfusionPapaverineExcretionInhibitory effectCyclic GMPBileLiverLiver modelCyclic AMPRegulatory volume decrease stimulates bile flow, bile acid excretion, and exocytosis in isolated perfused rat liver
Bruck R, Haddad P, Graf J, Boyer J. Regulatory volume decrease stimulates bile flow, bile acid excretion, and exocytosis in isolated perfused rat liver. American Journal Of Physiology 1992, 262: g806-g812. PMID: 1590390, DOI: 10.1152/ajpgi.1992.262.5.g806.Peer-Reviewed Original ResearchEffects of Ca2+ agonists on cytosolic Ca2+ in isolated hepatocytes and on bile secretion in the isolated perfused rat liver
Nathanson M, Gautam A, Bruck R, Isales C, Boyer J. Effects of Ca2+ agonists on cytosolic Ca2+ in isolated hepatocytes and on bile secretion in the isolated perfused rat liver. Hepatology 1992, 15: 107-116. PMID: 1727785, DOI: 10.1002/hep.1840150119.Peer-Reviewed Original ResearchMeSH KeywordsAequorinAnimalsBileCalcimycinCalciumCell SeparationCytosolHydroquinonesIn Vitro TechniquesLiverMalePressureRatsRats, Inbred StrainsVasopressinsConceptsBile flowPerfusion pressureBile secretionCytosolic Ca2Rat liverProtein kinase CIonophore-induced increaseBromo-A23187Hepatic vasoconstrictionVasodilator papaverineProtein kinase C inhibitor HExtracellular Ca2Kinase CSecretionLiverVasopressinAgonist vasopressinBenzohydroquinoneEffect of Ca2HepatocytesActivate protein kinase CInhibitor HTwo-thirdsIsolated hepatocytesSensitive photoprotein aequorin
1991
Role of chloride ions in liver cell volume regulation
Haddad P, Beck J, Boyer J, Graf J. Role of chloride ions in liver cell volume regulation. American Journal Of Physiology 1991, 261: g340-g348. PMID: 1872402, DOI: 10.1152/ajpgi.1991.261.2.g340.Peer-Reviewed Original ResearchConceptsRegulatory volume decreaseM omegaLiver cellsSingle isolated rat hepatocytesBiphasic responseHypotonic stressInitial hyperpolarizationPl/minIsolated rat hepatocytesGradual depolarizationCell volume regulationExternal ClRole of C1Hypotonic swellingVolume regulationMembrane potentialFacilitated releaseRat hepatocytesCellsMinVolume decreaseCell volumeInitial volumeInitial rateLiver
1990
DBcAMP stimulates vesicle transport and HRP excretion in isolated perfused rat liver
Hayakawa T, Bruck R, Ng O, Boyer J. DBcAMP stimulates vesicle transport and HRP excretion in isolated perfused rat liver. American Journal Of Physiology 1990, 259: g727-g735. PMID: 2173414, DOI: 10.1152/ajpgi.1990.259.5.g727.Peer-Reviewed Original ResearchConceptsBiliary excretionBile acidsBile acid excretionLiver 1Effects of adenosineRat liverElectron microscopic morphometric analysisTranscytotic vesicle pathwayLate peakHRP excretionHorseradish peroxidaseMin infusionBile flowExcretory functionAcid excretionO-dibutyryl cAMPPrimary hepatocyte culturesExcretionLiverDbcAMPCyclic monophosphateInfusionPericanalicular area
1989
Protein kinase C agonists inhibit bile secretion independently of effects on the microcirculation in the isolated perfused rat liver
Corasanti J, Smith N, Gordon E, Boyer J. Protein kinase C agonists inhibit bile secretion independently of effects on the microcirculation in the isolated perfused rat liver. Hepatology 1989, 10: 8-13. PMID: 2737605, DOI: 10.1002/hep.1840100103.Peer-Reviewed Original ResearchConceptsBile flowPerfusion pressureBile secretionVehicle dimethyl sulfoxideReversible decreaseConstant perfusate flowPhorbol dibutyrateVenous effluent concentrationsInactive phorbol ester 4Rat liver systemVascular redistributionHepatic microvasculaturePhorbol esterPhorbol ester 4Vasoactive agentsRole of hormonesPerfusate flowTrypan blue dyeAntagonist HProtein kinase C agonistsGm liverActive phorbol estersLiver systemRat liverOxygen consumptionVoltage-driven, taurocholate-dependent secretion in isolated hepatocyte couplets
Weinman S, Graf J, Boyer J. Voltage-driven, taurocholate-dependent secretion in isolated hepatocyte couplets. American Journal Of Physiology 1989, 256: g826-g832. PMID: 2719107, DOI: 10.1152/ajpgi.1989.256.5.g826.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBileBile CanaliculiBiological TransportIn Vitro TechniquesLiverMaleMembrane PotentialsRatsRats, Inbred StrainsTaurocholic AcidConceptsBile secretionBile acidsSecretion rateFluid secretionIntracellular current injectionCanalicular areaHepatocyte coupletsMembrane potentialRat hepatocyte coupletsAbsence of taurocholateMicroM taurocholateFluid secretion rateBile formationSecretionCarrier-mediated transportTaurocholateLiverIntracellular voltageDeterminants of glutathione efflux and biliary GSH/GSSG ratio in perfused rat liver
Ballatori N, Truong A, K. A, Boyer J. Determinants of glutathione efflux and biliary GSH/GSSG ratio in perfused rat liver. American Journal Of Physiology 1989, 256: g482-g490. PMID: 2564253, DOI: 10.1152/ajpgi.1989.256.3.g482.Peer-Reviewed Original ResearchConceptsGamma-glutamyl transferase activityO2 deliveryBiliary glutathioneHepatic effluxSinusoidal effluxKrebs-Ringer bicarbonate bufferGlutathione effluxRat liverEfflux of glutathioneGSH/GSSG ratioRed blood cellsPerfusion flow rateFluorocarbon emulsionsBile flowTissue GSHOxygen deliveryTransferase activityAT-125LiverBovine red blood cellsPerfusate compositionBlood cellsBileGSSG levelsGSSG ratio
1988
Effect of l-alanine on membrane potential, potassium (86Rb) permeability and cell volume in hepatocytes from Raja erinacea
Ballatori N, Wondergem R, Boyer J. Effect of l-alanine on membrane potential, potassium (86Rb) permeability and cell volume in hepatocytes from Raja erinacea. Biochimica Et Biophysica Acta 1988, 946: 261-269. PMID: 3207743, DOI: 10.1016/0005-2736(88)90401-4.Peer-Reviewed Original Research