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-DawleyTetraethylammoniumHepatic sequestration and modulation of the canalicular transport of the organic cation, daunorubicin, in the rat
Hayes J, Soroka C, Rios‐Velez L, Boyer J. Hepatic sequestration and modulation of the canalicular transport of the organic cation, daunorubicin, in the rat. Hepatology 1999, 29: 483-493. PMID: 9918926, DOI: 10.1002/hep.510290216.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnti-Bacterial AgentsAntineoplastic AgentsATP Binding Cassette Transporter, Subfamily B, Member 1BileBile CanaliculiBiological TransportBucladesineCationsChloroquineDaunorubicinKineticsLiverMacrolidesMaleMitochondrial ProteinsNocodazoleRatsRats, WistarRibosomal ProteinsSaccharomyces cerevisiae ProteinsTaurocholic AcidVerapamilConceptsBiliary excretionCoadministration of verapamilInhibitors of MDR1Rat hepatocyte coupletsBiliary recoveryDose administeredHepatic sequestrationTR- mutant ratsTherapeutic agentsExcretionDaunorubicinPericanalicular regionHepatocyte coupletsCanalicular transportRat liverBafilomycin ATaurocholateRatsIPRLIntracellular acidic compartmentsCellular localizationMicrotubule destabilizerConfocal microscopyIRHCPattern of distribution
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
Extrahepatic biliary obstruction impairs microvascular perfusion and increases leukocyte adhesion in rat liver
Koeppel T, Trauner M, Baas J, Thies J, Schlosser S, Post S, Gebhard M, Herfarth C, Boyer J, Otto G. Extrahepatic biliary obstruction impairs microvascular perfusion and increases leukocyte adhesion in rat liver. Hepatology 1997, 26: 1085-1091. PMID: 9362346, DOI: 10.1002/hep.510260501.Peer-Reviewed Original ResearchConceptsBile duct ligationIntravital fluorescence microscopyHepatic microvascular perfusionAcute biliary obstructionMicrovascular perfusionLeukocyte adhesionBiliary obstructionIntercellular adhesion molecule-1 protein expressionLeukocyte-endothelial cell interactionsMale Wistar ratsHydrogen gas clearanceICAM-1 expressionSham-operated controlsRat liverWestern blot analysisSinusoidal perfusionNeutrophil infiltrationLiver injuryHepatic microcirculationLiver damageLiver microcirculationTissue immunofluorescenceDuct ligationWistar ratsMarked impairmentBombesin stimulates bicarbonate secretion from rat cholangiocytes: Implications for neural regulation of bile secretion
Cho W, Mennone A, Rydberg, Boyer J. Bombesin stimulates bicarbonate secretion from rat cholangiocytes: Implications for neural regulation of bile secretion. Gastroenterology 1997, 113: 311-321. PMID: 9207292, DOI: 10.1016/s0016-5085(97)70109-4.Peer-Reviewed Original ResearchConceptsBile secretionBicarbonate secretionRat liverBile duct-ligated ratsRole of bombesinHepatocyte coupletsEffect of bombesinDose-dependent increaseDuct-ligated ratsBile duct unitsCanalicular bile secretionBile pHSite of actionBile flowSubstance PReceptor inhibitorsNeural regulationAbstractTextBombesinBiliary transportDuct unitsSecretionLiverLuminal pHRat cholangiocytes
1995
Isolation of small polarized bile duct units.
Mennone A, Alvaro D, Cho W, Boyer J. Isolation of small polarized bile duct units. Proceedings Of The National Academy Of Sciences Of The United States Of America 1995, 92: 6527-6531. PMID: 7541542, PMCID: PMC41551, DOI: 10.1073/pnas.92.14.6527.Peer-Reviewed Original ResearchMeSH Keywords1-Methyl-3-isobutylxanthine4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAnimalsBicarbonatesBile DuctsBucladesineChloridesCholestasisColforsinFluoresceinsGluconatesHydrogen-Ion ConcentrationKineticsLiverMaleMicroscopy, ElectronMicroscopy, VideoRatsRats, Sprague-DawleySecretinTime FactorsConceptsBile duct unitsInterlobular bile ductsBile ductDuct unitsSmall interlobular bile ductsBile duct syndromeBile duct segmentsCholestatic liver disordersCl-/HCO3- exchange activityRat liverLiver disordersPrimary siteForskolin administrationMicroM forskolinDextran 40Duct segmentsDibutyryl cAMPUseful preparationLiverSecretionForskolinImaging techniquesDuctLuminal spaceSyndromeExpression of sodium-independent organic anion uptake systems of skate liver in Xenopus laevis oocytes
Jacquemin E, Hagenbuch B, Wolkoff A, Meier P, Boyer J. Expression of sodium-independent organic anion uptake systems of skate liver in Xenopus laevis oocytes. American Journal Of Physiology 1995, 268: g18-g23. PMID: 7840202, DOI: 10.1152/ajpgi.1995.268.1.g18.Peer-Reviewed Original ResearchConceptsBSP uptakeSkate liverTaurocholate uptakeXenopus laevis oocytesOrganic anion transport systemInjection of oocytesLaevis oocytesLiverAnion transport systemRat liverSulfobromophthalein uptakeUptake systemOocytesMRNADisulfonic acidUptake activityFunctional expressionLiver mRNAUptakeExpressionSerum albuminLower vertebrates
1994
Characterization of cloned rat liver Na(+)-bile acid cotransporter using peptide and fusion protein antibodies
Ananthanarayanan M, Ng O, Boyer J, Suchy F. Characterization of cloned rat liver Na(+)-bile acid cotransporter using peptide and fusion protein antibodies. American Journal Of Physiology 1994, 267: g637-g643. PMID: 7943329, DOI: 10.1152/ajpgi.1994.267.4.g637.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibodiesBase SequenceBlotting, WesternCarrier ProteinsCloning, MolecularFluorescent Antibody TechniqueHumansImmune SeraImmunoblottingLiverMaleMolecular ProbesMolecular Sequence DataOrganic Anion Transporters, Sodium-DependentPeptide FragmentsRatsRats, Sprague-DawleyRecombinant Fusion ProteinsSymportersEffects 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 concentrationsHepatocytesExpression and characterization of a functional rat liver Na+ bile acid cotransport system in COS-7 cells
Boyer J, Ng O, Ananthanarayanan M, Hofmann A, Schteingart C, Hagenbuch B, Stieger B, Meier P. Expression and characterization of a functional rat liver Na+ bile acid cotransport system in COS-7 cells. American Journal Of Physiology 1994, 266: g382-g387. PMID: 8166278, DOI: 10.1152/ajpgi.1994.266.3.g382.Peer-Reviewed Original ResearchConceptsCOS-7 cellsCotransport systemBile acid transporterUrsodeoxycholic acidTaurochenodeoxycholic acidAcid cotransport systemTauroursodeoxycholic acidBile acidsRat hepatocytesAbsence of sodiumChenodeoxycholic acidCOS cellsEmpty plasmidPMAMneo vectorCholic acidBile acid cotransporterMicroM bilirubinRat liverEvidence of expressionCell linesAcid transportersPosttranslational factorsProgressive uptakeCotransporterAcid cotransporter
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 liverHypercholeresisEffect of secretion on intracellular pH regulation in isolated rat bile duct epithelial cells.
Alvaro D, Cho W, Mennone A, Boyer J. Effect of secretion on intracellular pH regulation in isolated rat bile duct epithelial cells. Journal Of Clinical Investigation 1993, 92: 1314-1325. PMID: 8397224, PMCID: PMC288273, DOI: 10.1172/jci116705.Peer-Reviewed Original ResearchConceptsBile duct epithelial cellsDuct epithelial cellsCl-/HCO3Cell depolarizationEpithelial cellsEffect of secretinCl- channel blockerEffects of secretionsCl removalCl- channel activationRat bile duct epithelial cellsKRB mediumMaximal rateRegulation of intracellularBicarbonate secretionNormal rat liverIntracellular pH regulationMM DIDSHCO3- excretionAcid loadBDE cellsSecretinMicrofluorimetric methodRat liverHCO3- influxIntracellular 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 hepatocytesColchicinePretreatmentExocytosis
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 ResearchConceptsBile 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
Effect of UDCA on intracellular and biliary pH in isolated rat hepatocyte couplets and perfused livers
Strazzabosco M, Sakisaka S, Hayakawa T, Boyer J. Effect of UDCA on intracellular and biliary pH in isolated rat hepatocyte couplets and perfused livers. American Journal Of Physiology 1991, 260: g58-g69. PMID: 1987808, DOI: 10.1152/ajpgi.1991.260.1.g58.Peer-Reviewed Original ResearchConceptsBiliary HCO3- concentrationUrsodeoxycholic acidRat hepatocyte coupletsBiliary pHAcid loadEffect of UDCABile duct lumenHepatocyte coupletsIsolated rat hepatocyte coupletsBiliary epitheliumHCO3- concentrationDuct lumenRemoval of ClHCO3- exchangeRat liverLiverIPRLHepatocytesHypercholeresisPerfusateBileExcretionEpitheliumAmiloride
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 consumption