2023
High Dietary K Intake Inhibits Proximal Tubule Transport and Reduces GFR
Wang T, Liu T, Xu S, Frindt G, Palmer L, Weinstein A. High Dietary K Intake Inhibits Proximal Tubule Transport and Reduces GFR. Physiology 2023, 38: 5731363. DOI: 10.1152/physiol.2023.38.s1.5731363.Peer-Reviewed Original ResearchGlomerular filtration rateReduced glomerular filtration rateK + excretionProximal tubulesTubular fluidConnecting tubuleUrine volumeTreated ratsNephron segmentsReduction of glomerular filtration rateProximal tubule transportLengths of proximal tubulesDistal nephron segmentsProximal nephron segmentsFree-flow micropunctureNa + absorptionHK intakeIncreased FENaTubule transportFractional deliveryFiltration rateKidney functionIncreased secretionFluid absorptionFITC-inulin
2022
Regulation of Glomerulotubular Balance IV: Implication of Aquaporin 1 in Flow-Dependent Proximal Tubule Transport and Cell Volume
Du Z, Yan Q, Weinstein A, Wang T. Regulation of Glomerulotubular Balance IV: Implication of Aquaporin 1 in Flow-Dependent Proximal Tubule Transport and Cell Volume. Journal Of The American Society Of Nephrology 2022, 33: 142-143. DOI: 10.1681/asn.20223311s1142d.Peer-Reviewed Original Research
2017
Regulation of glomerulotubular balance: flow-activated proximal tubule function
Wang T, Weinbaum S, Weinstein A. Regulation of glomerulotubular balance: flow-activated proximal tubule function. Pflügers Archiv - European Journal Of Physiology 2017, 469: 643-654. PMID: 28271233, PMCID: PMC6162058, DOI: 10.1007/s00424-017-1960-8.Peer-Reviewed Original ResearchConceptsNa/H exchanger isoform 3Proximal tubulesTubule functionIntracellular Ca2+ signalingProximal tubule transportMammalian proximal tubuleAcid-base transportersProximal tubule functionRegulation of sodiumCa2+ signalingHCO3- absorptionStimulate Na+Tubule transportMicropuncture studiesSolute reabsorptionPeritubular membraneBrush border membraneBrush border microvilliGlomerulotubular balanceHCO3- transportIsoform 3Flow velocity changesTubulesRegulatory mechanismsTransporter availability
2015
Regulation of glomerulotubular balance. III. Implication of cytosolic calcium in flow-dependent proximal tubule transport
Du Z, Weinbaum S, Weinstein A, Wang T. Regulation of glomerulotubular balance. III. Implication of cytosolic calcium in flow-dependent proximal tubule transport. American Journal Of Physiology. Renal Physiology 2015, 308: f839-f847. PMID: 25651568, PMCID: PMC4398834, DOI: 10.1152/ajprenal.00601.2014.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBicarbonatesBiological TransportCalciumCalcium-Transporting ATPasesChelating AgentsCytosolEnzyme InhibitorsIn Vitro TechniquesInositol 1,4,5-Trisphosphate ReceptorsKidney Tubules, ProximalKineticsMice, Inbred C57BLPerfusionRenal ReabsorptionSodiumSodium-Hydrogen Exchanger 3Sodium-Hydrogen ExchangersConceptsNa/H exchanger 3Luminal Ca(2Flow-induced increaseCytosolic calciumProximal tubulesCa(2+) chelator BAPTA-AMAntagonist 2-aminoethoxydiphenyl borateCa-ATPase inhibitor thapsigarginProximal tubule transportNa(+) reabsorptionMicroperfused in vitroMouse proximal tubuleChelator BAPTA-AMH-ATPase activityNo effectControl tubulesInhibitor thapsigarginBAPTA-AMIntracellular Ca(2Decreased transportTubule transportBaseline transportStimulates Na(+Modulate Na(+Glomerulotubular balance
2011
DOPAMINE MODULATES FLOW‐DEPENDENT TRANSPORT BY NHE3, BUT NOT H+‐ATPASE, IN MOUSE PROXIMAL TUBULES
Du Z, Gotoh N, Weinbaum S, Weinstein A, Wang T. DOPAMINE MODULATES FLOW‐DEPENDENT TRANSPORT BY NHE3, BUT NOT H+‐ATPASE, IN MOUSE PROXIMAL TUBULES. The FASEB Journal 2011, 25: 1041.18-1041.18. DOI: 10.1096/fasebj.25.1_supplement.1041.18.Peer-Reviewed Original ResearchEffects of DAProtein kinase A inhibitor H89Proximal tubules in vitroPKA-mediated mechanismProximal tubule transportReabsorption of fluidTubules in vitroHCO3- absorptionLuminal perfusion rateTubule transportJHCO3Cl- transportProximal tubulesNHE3Perfusion rateDopamineSCH23390JNaPresence of DAInhibitory effectSignaling mechanismsH+-ATPaseDA1No effectFlow-dependent transport
2010
ROLE OF DOPAMINE IN MODULATING FLOW‐DEPENDENT SODIUM AND BICARBONATE TRANSPORT IN MOUSE PROXIMAL TUBULE
Du Z, Yan Q, Weinbaum S, Weinstein A, Wang T. ROLE OF DOPAMINE IN MODULATING FLOW‐DEPENDENT SODIUM AND BICARBONATE TRANSPORT IN MOUSE PROXIMAL TUBULE. The FASEB Journal 2010, 24: 1024.2-1024.2. DOI: 10.1096/fasebj.24.1_supplement.1024.2.Peer-Reviewed Original ResearchProximal tubule transportEffects of dopamineMouse proximal tubuleTubule transportProximal tubulesNHE3 endocytosisCAMP-dependent protein kinase inhibitor H89PKA-mediated mechanismMicroperfused in vitroProtein kinase inhibitor H89Kidney proximal tubulesReabsorption of fluidLuminal flow rateKinase inhibitor H89Sodium reabsorptionApical membraneHCO-3 absorptionInhibitor H89DopaminePerfusion rateTubulesSCH23390NHE3Net reabsorptionSulpiride
2006
Use of transgenic mice in acid-base balance studies.
Cantone A, Wang T, Pica A, Simeoni M, Capasso G. Use of transgenic mice in acid-base balance studies. Journal Of Nephrology 2006, 19 Suppl 9: s121-7. PMID: 16736435.Peer-Reviewed Original ResearchMeSH KeywordsAcid-Base EquilibriumAcid-Base ImbalanceAnimalsCation Transport ProteinsDisease Models, AnimalDNAGene ExpressionKidney TubulesMembrane ProteinsMiceMice, TransgenicNitric Oxide SynthaseSodium-Bicarbonate SymportersSodium-Hydrogen Exchanger 1Sodium-Hydrogen Exchanger 3Sodium-Hydrogen ExchangersConceptsNitric oxide synthaseAcid-base statusNa+/H+ exchangeBody acid-base statusTransgenic miceFunction of pendrinProximal tubule transportTransepithelial HCO3- absorptionPotassium-chloride cotransporterEndothelial isoform of nitric oxide synthaseIsoform of nitric oxide synthaseSubunit expression levelsKnockout animal modelsApical NHE3Basolateral NHE1HCO3- absorptionNa+/HCO3- cotransporterNatriuretic responseRegulation of acid-base balanceTubule transportDistal nephronProximal tubulesRenal diseaseChloride channelsAscending limb
2003
Role of PKC and calcium in modulation of effects of angiotensin II on sodium transport in proximal tubule
Du Z, Ferguson W, Wang T. Role of PKC and calcium in modulation of effects of angiotensin II on sodium transport in proximal tubule. American Journal Of Physiology. Renal Physiology 2003, 284: f688-f692. PMID: 12527554, DOI: 10.1152/ajprenal.00261.2002.Peer-Reviewed Original ResearchConceptsConcentrations of Ang IIAng IIProximal tubulesFluid absorptionTMB-8Effect of luminal ANGLow concentrations of Ang IIEffects of Ang IIEffects of angiotensin IIProximal tubules in vitroProximal tubule transportProximal tubules of ratsInhibit Na(+) transportIntracellular calcium mobilizationAng II concentrationsTubules of ratsCAMP-independent mechanismConcentrations of ANGNa(+) transportTubules in vitroProximal tubular fluidIntracellular Ca(2Intracellular calciumTubule transportLuminal ANG
2002
Role of iNOS and eNOS in modulating proximal tubule transport and acid-base balance
Wang T. Role of iNOS and eNOS in modulating proximal tubule transport and acid-base balance. American Journal Of Physiology. Renal Physiology 2002, 283: f658-f662. PMID: 12217856, DOI: 10.1152/ajprenal.00243.2001.Peer-Reviewed Original ResearchConceptsNeuronal nitric oxide synthaseProximal tubulesEndothelial NOSInducible NOSKnockout miceHCO transportEndothelial NOS knockout miceINOS knockout miceMice lacking neuronal nitric oxide synthaseL-N(6)-(1-iminoethyl) lysineInducible NOS knockoutProximal tubule transportNOS knockout miceKidney proximal tubulesWild-typeIsoforms of NOSWild-type controlsNitric oxide synthaseTubule transportMetabolic acidosisModulate Na(+Acid-base statusJ(HCO3Acid-base balanceFluid absorption
2000
Defective fluid and HCO3 − absorption in proximal tubule of neuronal nitric oxide synthase-knockout mice
Wang T, Inglis F, Kalb R. Defective fluid and HCO3 − absorption in proximal tubule of neuronal nitric oxide synthase-knockout mice. American Journal Of Physiology. Renal Physiology 2000, 279: f518-f524. PMID: 10966931, DOI: 10.1152/ajprenal.2000.279.3.f518.Peer-Reviewed Original ResearchMeSH KeywordsAcid-Base EquilibriumAnimalsBicarbonatesBiological TransportBlood Gas AnalysisBody FluidsElectrolytesEnzyme InhibitorsInjections, IntravenousKidney Tubules, ProximalMiceMice, Inbred C57BLMice, KnockoutNG-Nitroarginine Methyl EsterNitric Oxide SynthaseNitric Oxide Synthase Type IPotassiumSodiumConceptsNNOS knockout miceWild-type miceL-NAMEProximal tubulesMetabolic acidosisAbsorption of fluidDecreased absorption of fluidBlood pressureIncreased mean blood pressureResponse to L-NAMEWild-type control animalsFluid absorptionAdministration of L-NAMEIn situ microperfusionProximal tubule transportNeuronal nitric oxide synthaseLuminal perfusion solutionMean blood pressureRenal clearance techniquesNitric oxide synthaseRates of HCO(3)(-Urinary Na(+HCO3- absorptionRegulation of acid-base balanceTubule transport
1999
Mechanism of proximal tubule bicarbonate absorption in NHE3 null mice
Wang T, Yang C, Abbiati T, Schultheis P, Shull G, Giebisch G, Aronson P. Mechanism of proximal tubule bicarbonate absorption in NHE3 null mice. American Journal Of Physiology 1999, 277: f298-f302. PMID: 10444585, DOI: 10.1152/ajprenal.1999.277.2.f298.Peer-Reviewed Original Research