1998
Strain induces Caco-2 intestinal epithelial proliferation and differentiation via PKC and tyrosine kinase signals
Han O, Di Li G, Sumpio B, Basson M. Strain induces Caco-2 intestinal epithelial proliferation and differentiation via PKC and tyrosine kinase signals. American Journal Of Physiology 1998, 275: g534-g541. PMID: 9724266, DOI: 10.1152/ajpgi.1998.275.3.g534.Peer-Reviewed Original Research
1997
Regulation of tPA in endothelial cells exposed to cyclic strain: role of CRE, AP-2, and SSRE binding sites
Sumpio B, Chang R, Xu W, Wang X, Du W. Regulation of tPA in endothelial cells exposed to cyclic strain: role of CRE, AP-2, and SSRE binding sites. American Journal Of Physiology 1997, 273: c1441-c1448. PMID: 9374627, DOI: 10.1152/ajpcell.1997.273.5.c1441.Peer-Reviewed Original ResearchAnimalsAorta, ThoracicBase SequenceBinding SitesCattleCell CycleCell NucleusCells, CulturedChloramphenicol O-AcetyltransferaseCyclic AMP Response Element-Binding ProteinDNA-Binding ProteinsEndothelium, VascularGene Expression Regulation, EnzymologicHumansKineticsMutagenesis, Site-DirectedOligodeoxyribonucleotidesPromoter Regions, GeneticRecombinant Fusion ProteinsStress, MechanicalTime FactorsTissue Plasminogen ActivatorTranscription Factor AP-2Transcription FactorsTransfectionExposure of endothelial cells to cyclic strain induces elevations of cytosolic Ca2+ concentration through mobilization of intracellular and extracellular pools
ROSALES O, ISALES C, BARRETT P, BROPHY C, SUMPIO B. Exposure of endothelial cells to cyclic strain induces elevations of cytosolic Ca2+ concentration through mobilization of intracellular and extracellular pools. Biochemical Journal 1997, 326: 385-392. PMID: 9291109, PMCID: PMC1218682, DOI: 10.1042/bj3260385.Peer-Reviewed Original ResearchConceptsMicroM GdCl3Endothelial cellsIP3 formationLate-phase componentsInitiation of stretchExtracellular poolConfluent bovine aortic endothelial cellsMobilization of intracellularAortic endothelial cellsBovine aortic endothelial cellsNM charybdotoxinCycles/minIP3 generationIntracellular Ca2Sustained phaseCytosolic Ca2Confluent endothelial cellsBenzohydroquinoneFree mediumTemporal relationshipMicroM NiCl2Ca2PreincubationCellsInitial rise
1992
Immunocytochemical expression and localization of protein kinase C in bovine aortic endothelial cells
Rosales O, Isales C, Nathanson M, Sumpio B. Immunocytochemical expression and localization of protein kinase C in bovine aortic endothelial cells. Biochemical And Biophysical Research Communications 1992, 189: 40-46. PMID: 1449492, DOI: 10.1016/0006-291x(92)91522-r.Peer-Reviewed Original ResearchConceptsSerum-deprived mediumPKC activityPhorbol ester-induced increaseAortic endothelial cellsBovine aortic endothelial cellsBeta stainingSDM groupTotal PKC activityImmunocytochemical expressionBeta PKC isoformsEndothelial cellsParticulate fractionFBS groupProtein kinase CCalphostin CPKC inhibitorPhorbol esterConfocal microscopyDiffuse cytoplasmic localizationCytosolic fractionGamma-PKCKinase CPKC isoformsCytoplasmic localizationCells
1991
Nephrotoxic potential of FK 506.
Sumpio BE, Phan S. Nephrotoxic potential of FK 506. Transplantation Proceedings 1991, 23: 2789-90. PMID: 1721278.Peer-Reviewed Original Research
1988
Osteoblasts increase their rate of division and align in response to cyclic, mechanical tension in vitro.
Buckley MJ, Banes AJ, Levin LG, Sumpio BE, Sato M, Jordan R, Gilbert J, Link GW, Tran Son Tay R. Osteoblasts increase their rate of division and align in response to cyclic, mechanical tension in vitro. Bone And Mineral 1988, 4: 225-36. PMID: 2847838.Peer-Reviewed Original Research
1986
Effects of ATP-MgCl2 and adenosine-MgCl2 administration on intracellular ATP levels in the kidney
Sumpio B, Hull M, Bauer A, Chaudry I. Effects of ATP-MgCl2 and adenosine-MgCl2 administration on intracellular ATP levels in the kidney. Biochimica Et Biophysica Acta 1986, 862: 303-308. PMID: 3778894, DOI: 10.1016/0005-2736(86)90232-4.Peer-Reviewed Original ResearchConceptsATP-MgCl2 administrationColloid oncotic pressureIntracellular ATPATP-MgCl2Exogenous administrationIntracellular ATP levelsRat kidneyOncotic pressureAdministrationTotal intracellular ATPPerfusate solutionKidneyIntracellular accumulationATP levelsAdenine nucleotidesSignificant accumulationATPPerfusate
1984
Renal hydrolysis of absorbed protein: influence of load and lysosomal pH
Camargo MJ, Sumpio BE, Maack T. Renal hydrolysis of absorbed protein: influence of load and lysosomal pH. American Journal Of Physiology 1984, 247: f656-f664. PMID: 6093557, DOI: 10.1152/ajprenal.1984.247.4.f656.Peer-Reviewed Original ResearchConceptsNormal filtered loadEfflux of radioactivityRenal tubular cellsEffect of alkalinizationProtein absorption dropletsRenal catabolismNormal lysosomal functionLysosomotropic weak basesFiltered loadTubular cellsKidney 1Abnormal depositionRat kidneyKidneyAbsorption dropletsSaturable processIntracellular hydrolysisSaturable functionLysosomal functionPerfusateLysosomal pHLow uptake rateSephadex chromatographyReversible mannerHalf timesUrinary excretion of interferon, albumin, and beta 2-microglobulin during interferon treatment.
Sumpio BE, Ernstoff MS, Kirkwood JM. Urinary excretion of interferon, albumin, and beta 2-microglobulin during interferon treatment. Cancer Research 1984, 44: 3599-603. PMID: 6378373.Peer-Reviewed Original ResearchConceptsInterferon therapyUrinary excretionInterferon activityPhase I trialSerum interferon activityUrinary betaInterferon administrationI trialSignificant nephrotoxicityTubular lesionsUrinary levelsInterferon treatmentHighest dosing levelDosing levelsTherapyInterferonExcretionTreatmentLow affinityAlbuminBetaNephrotoxicityPatientsLesionsPharmacokineticsKinetics of Renal Catabolism of Absorbed Proteins: Influence of Lysosomal pH
Camargo M, Sumpio B, Maack T. Kinetics of Renal Catabolism of Absorbed Proteins: Influence of Lysosomal pH. Contributions To Nephrology 1984, 42: 19-29. PMID: 6099789, DOI: 10.1159/000409957.Peer-Reviewed Original Research
1982
Kinetics, competition, and selectivity of tubular absorption of proteins
Sumpio BE, Maack T. Kinetics, competition, and selectivity of tubular absorption of proteins. American Journal Of Physiology 1982, 243: f379-f392. PMID: 7124951, DOI: 10.1152/ajprenal.1982.243.4.f379.Peer-Reviewed Original ResearchConceptsBeta 2MTubular absorptionHuman growth hormoneLow perfusate calcium concentrationsPerfusate calcium concentrationMorphologic damageTubular epitheliumProximal tubulesGrowth hormoneRat kidneyCationic proteinCalcium concentrationSaturable processSaturating loadSelective effectLuminal wallLow apparent affinityTubulesImportant determinantReversible mannerApparent affinityMicrovilliProteinKidney