2001
Cl−-dependent secretory mechanisms in isolated rat bile duct epithelial units
Singh S, Mennone A, Gigliozzi A, Fraioli F, Boyer J. Cl−-dependent secretory mechanisms in isolated rat bile duct epithelial units. AJP Gastrointestinal And Liver Physiology 2001, 281: g438-g446. PMID: 11447024, DOI: 10.1152/ajpgi.2001.281.2.g438.Peer-Reviewed Original ResearchMeSH KeywordsAmmonium ChlorideAnimalsBariumBicarbonatesBile Ducts, IntrahepaticBumetanideCarbon DioxideCarrier ProteinsCell PolarityCells, CulturedChloridesColforsinEpithelial CellsHydrogen-Ion ConcentrationIon TransportMaleModels, BiologicalRatsRats, Sprague-DawleySodiumSodium-Potassium-Chloride SymportersConceptsCO2/HCOFluid secretionCotransport activityIntrahepatic bile duct epitheliumBile duct epitheliumDependent fluid secretionHigh intracellular Cl(-) concentrationIntracellular Cl- concentrationBile duct unitsApical Cl(-) secretionNH entryInitial acidification rateIntracellular cAMP concentrationNH4Cl exposureDuct epitheliumInhibitor bumetanideChannel inhibitorsCl(-) secretionCanalicular bileDuct unitsSecretionDependent secretionSecretory mechanismBumetanideForskolinIsolation of functional polarized bile duct units from mouse liver
Cho W, Mennone A, Boyer J. Isolation of functional polarized bile duct units from mouse liver. AJP Gastrointestinal And Liver Physiology 2001, 280: g241-g246. PMID: 11208546, DOI: 10.1152/ajpgi.2001.280.2.g241.Peer-Reviewed Original ResearchConceptsVasoactive intestinal peptideBile duct epitheliumMurine animal modelBile duct unitsPortal perfusionIntestinal peptideSecretory responseAnimal modelsBlunt dissectionDuct epitheliumSecretory stimuliFluid secretionDuct unitsCholangiocyte secretionFurther enzymatic digestionMouse liverSecretionMurine animalsIBDUMice
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 activityActivity
1997
Bombesin 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 ResearchMeSH KeywordsAnimalsBicarbonatesBileBile Ducts, IntrahepaticBombesinLiverMaleNeuropeptidesPerfusionRatsRats, Sprague-DawleyConceptsBile 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
1996
Regulation of intracellular pH in the hepatocyte Mechanisms and physiological implications
Strazzabosco M, Boyer J. Regulation of intracellular pH in the hepatocyte Mechanisms and physiological implications. Journal Of Hepatology 1996, 24: 631-644. PMID: 8773922, DOI: 10.1016/s0168-8278(96)80153-x.Peer-Reviewed Original ResearchBile duct epithelium: frontiers in transport physiology
Boyer J. Bile duct epithelium: frontiers in transport physiology. American Journal Of Physiology 1996, 270: g1-g5. PMID: 8772494, DOI: 10.1152/ajpgi.1996.270.1.g1.Peer-Reviewed Original Research
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 spaceSyndrome
1994
Regulation 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 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 Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid4-Acetamido-4'-isothiocyanatostilbene-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
1991
Cl(-)-HCO3- exchanger in isolated rat hepatocytes: role in regulation of intracellular pH
Benedetti A, Strazzabosco M, Corasanti J, Haddad P, Graf J, Boyer J. Cl(-)-HCO3- exchanger in isolated rat hepatocytes: role in regulation of intracellular pH. American Journal Of Physiology 1991, 261: g512-g522. PMID: 1887897, DOI: 10.1152/ajpgi.1991.261.3.g512.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic AcidAmmoniaAnimalsBariumBicarbonatesCarrier ProteinsCells, CulturedChloride-Bicarbonate AntiportersChloridesHydrogen-Ion ConcentrationIntracellular FluidKineticsLiverMaleRatsRats, Inbred StrainsConceptsAlkaline loadPH-sensitive dye BCECFMM H2DIDSPHi recoveryRegulation of intracellularRat hepatocyte monolayersAcid extrudersMM DIDSRat hepatocytesElectrophysiological techniquesDye BCECFHCO3- exchangerIsolated rat hepatocytesConstant pHoIntracellularMembrane potentialHepatocyte monolayersHepatocytesAcid loading
1990
Effects of osmotic stresses on isolated rat hepatocytes. I. Ionic mechanisms of cell volume regulation
Corasanti J, Gleeson D, Boyer J. Effects of osmotic stresses on isolated rat hepatocytes. I. Ionic mechanisms of cell volume regulation. American Journal Of Physiology 1990, 258: g290-g298. PMID: 2305895, DOI: 10.1152/ajpgi.1990.258.2.g290.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic AcidAmilorideAnimalsBariumBicarbonatesBumetanideCells, CulturedChloridesHypertonic SolutionsHypotonic SolutionsKineticsLiverMaleOsmolar ConcentrationPotassium ChlorideQuinineRatsRats, Inbred StrainsSodium ChlorideEffects of osmotic stresses on isolated rat hepatocytes. II. Modulation of intracellular pH
Gleeson D, Corasanti J, Boyer J. Effects of osmotic stresses on isolated rat hepatocytes. II. Modulation of intracellular pH. American Journal Of Physiology 1990, 258: g299-g307. PMID: 2305896, DOI: 10.1152/ajpgi.1990.258.2.g299.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic AcidAnimalsBicarbonatesBuffersCells, CulturedCholineHydrogen-Ion ConcentrationHypertonic SolutionsHypotonic SolutionsIntracellular FluidKineticsLiverMaleOsmolar ConcentrationRatsRats, Inbred StrainsSodiumConceptsRegulatory volume decreaseAbsence of HCO3Presence of HCO3Acid-base transport systemsModulation of intracellularRat hepatocytesVolume regulationAcute withdrawalMM amilorideGreater intracellularHCO3- exchangeAcid effluxIsotonic mediumIsolated rat hepatocytesSame maneuverCell volume regulationHepatocytesNet acid effluxAmilorideSubconfluent monolayersDisulfonic acidIntracellularVolume decreaseHypotonic mediumHypertonic medium
1989
Bicarbonate-dependent and -independent intracellular pH regulatory mechanisms in rat hepatocytes. Evidence for Na+-HCO3- cotransport.
Gleeson D, Smith N, Boyer J. Bicarbonate-dependent and -independent intracellular pH regulatory mechanisms in rat hepatocytes. Evidence for Na+-HCO3- cotransport. Journal Of Clinical Investigation 1989, 84: 312-321. PMID: 2544626, PMCID: PMC303984, DOI: 10.1172/jci114156.Peer-Reviewed Original ResearchConceptsDisulfonic acid stilbeneHCO3- cotransportIntracellular acid loadHCO3- thanIntracellular pH regulatory mechanismsPH regulatory mechanismsBaseline pHiMonolayer cell culture systemRat hepatocytesAcid loadIntracellular ClCl-/HCO3AmilorideCell culture systemAnion transport inhibitorAbsence of bicarbonateHCO3- transportImportant regulatorHepatocytesPH-sensitive dyeCarboxy-fluoresceinTransport inhibitorsCulture systemRegulatory mechanismsPhi
1985
Evidence for carrier-mediated chloride/bicarbonate exchange in canalicular rat liver plasma membrane vesicles.
Meier P, Knickelbein R, Moseley R, Dobbins J, Boyer J. Evidence for carrier-mediated chloride/bicarbonate exchange in canalicular rat liver plasma membrane vesicles. Journal Of Clinical Investigation 1985, 75: 1256-1263. PMID: 2985654, PMCID: PMC425453, DOI: 10.1172/jci111824.Peer-Reviewed Original ResearchMechanisms of Electrolyte Transport in the Liver Their Functional Significance
Moseley R, Boyer J. Mechanisms of Electrolyte Transport in the Liver Their Functional Significance. Seminars In Liver Disease 1985, 5: 122-135. PMID: 3161181, DOI: 10.1055/s-2008-1063917.Peer-Reviewed Original Research