2022
Molecular determinants of peri‐apical targeting of inositol 1,4,5‐trisphosphate receptor type 3 in cholangiocytes
Rodrigues MA, Gomes DA, Fiorotto R, Guerra MT, Weerachayaphorn J, Bo T, Sessa WC, Strazzabosco M, Nathanson MH. Molecular determinants of peri‐apical targeting of inositol 1,4,5‐trisphosphate receptor type 3 in cholangiocytes. Hepatology Communications 2022, 6: 2748-2764. PMID: 35852334, PMCID: PMC9512452, DOI: 10.1002/hep4.2042.Peer-Reviewed Original ResearchConceptsLipid raftsCaveolin-1Intact lipid raftsType 3 inositol trisphosphate receptorApical regionC-terminal amino acidsTrisphosphate receptor type 3Madin-Darby canine kidney cellsCanine kidney cellsFluorescence microscopy techniquesInositol trisphosphate receptorApical localizationTrisphosphate receptorHeavy chain 9Molecular determinantsChemical disruptionAmino acidsITPR3RaftsKidney cellsIntracellular CaFinal common eventReceptor type 3Release channelMYH9
2000
Ca2+‐activated Cl− channels can substitute for CFTR in stimulation of pancreatic duct bicarbonate secretion
ZSEMBERY Á, Strazzabosco M, Graf J. Ca2+‐activated Cl− channels can substitute for CFTR in stimulation of pancreatic duct bicarbonate secretion. The FASEB Journal 2000, 14: 2345-2356. PMID: 11053257, DOI: 10.1096/fj.99-0509com.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateBicarbonatesCalciumCesiumChloride ChannelsChloridesCyclic AMPCystic Fibrosis Transmembrane Conductance RegulatorGlyburideGlycerolHumansHydrogen-Ion ConcentrationMembrane PotentialsMutationPancreatic DuctsPatch-Clamp TechniquesPotassium ChannelsTumor Cells, Cultured
1998
Purinergic regulation of acid/base transport in human and rat biliary epithelial cell lines
Zsembery Á, Spirlì C, Granato A, LaRusso N, Okolicsanyi L, Crepaldi G, Strazzabosco M. Purinergic regulation of acid/base transport in human and rat biliary epithelial cell lines. Hepatology 1998, 28: 914-920. PMID: 9755225, DOI: 10.1002/hep.510280403.Peer-Reviewed Original ResearchConceptsCholangiocyte cell lineNHE activityPurinergic agonistsBiliary epithelial cell lineExtracellular ATPCell linesIntracellular cyclic adenosine monophosphate (cAMP) concentrationsBiliary HCO3- secretionRat cholangiocyte cell lineCyclic adenosine monophosphate concentrationsAdenosine receptor agonistsBiliary epithelial cellsMz-ChA-1 cellsAdenosine monophosphate concentrationsSynergistic stimulatory effectApical administrationEpithelial cell lineReceptor agonistP2Y2 receptorPurinergic receptorsBile volumePharmacological profileApical Cl- channelsBasolateral administrationHCO3- secretion
1997
New insights into cholangiocyte physiology
Strazzabosco M. New insights into cholangiocyte physiology. Journal Of Hepatology 1997, 27: 945-952. PMID: 9382988, DOI: 10.1016/s0168-8278(97)80338-8.Peer-Reviewed Original ResearchNa+‐dependent and ‐independent Cl−/HCO exchange mediate cellular HCO transport in cultured human intrahepatic bile duct cells
Strazzabosco M, Joplin R, Zsembery A, Wallace L, Spirli C, Fabris L, Granato A, Rossanese A, Poci C, Neuberger J, Okolicsanyi L, Crepaldi G. Na+‐dependent and ‐independent Cl−/HCO exchange mediate cellular HCO transport in cultured human intrahepatic bile duct cells. Hepatology 1997, 25: 976-985. PMID: 9096607, DOI: 10.1002/hep.510250431.Peer-Reviewed Original ResearchConceptsEpithelial membrane antigenIntracellular acid loadHuman cholangiocytesAcid loadIntrahepatic bile duct cellsFactor VIII-related antigenIntracellular cyclic adenosine monophosphate (cAMP) concentrationsBiliary HCO3- secretionPediatric liver transplantationAdministration of agentsCyclic adenosine monophosphate concentrationsHuman hepatocyte growth factorVIII-related antigenBile duct cellsNormal liver tissueBiliary epithelial cellsCl- channel inhibitorsHepatocyte growth factorAdenosine monophosphate concentrationsIntracellular cAMP concentrationLiver transplantationReduced graftAbsence of HCO3Biliary treeAcid loader
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 Research
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 coupletsHepatocytesActivityRegulationPhorbolColchicineEffect of ursodeoxycholic acid on intracellular pH in a bile duct epithelium‐like cell line
Strazzabosco M, Poci C, Spirlí C, Sartori L, Knuth A, Crepaldi G. Effect of ursodeoxycholic acid on intracellular pH in a bile duct epithelium‐like cell line. Hepatology 1994, 19: 145-154. PMID: 8276351, DOI: 10.1002/hep.1840190124.Peer-Reviewed Original ResearchConceptsUrsodeoxycholic acidDuct epitheliumUnconjugated ursodeoxycholic acidSK-ChA-1 cellsBile duct epitheliumSK-ChA-1Acid-induced increaseFluorescent indicator 2Human cholangiocarcinoma cell linesCell linesIntracellular pH regulatory mechanismsCholangiocarcinoma cell linesCl/HCO3 exchangePreincubation of cellsAbsence of HCO3Furosemide administrationPH regulatory mechanismsAcid/base transportersDuct levelUDCAHCO3- exchange
1993
Intracellular 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
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-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic Acid4,4'-Diisothiocyanostilbene-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