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 rateTF/PProximal tubulesUrine volumeTubular fluidDistal NaFractional NaReduction of GFRNephron segmentsFree-flow micropunctureOverall kidney functionDistal nephron segmentsProximal nephron segmentsKidney functionFiltration ratePt-NaFiltered loadLate DCTProximal adjustmentsModulation of NaTubule transportFractional deliveryFluid absorptionPT transportRats
2022
Regulation of glomerulotubular balance. IV. Implication of aquaporin 1 in flow-dependent proximal tubule transport and cell volume
Du Z, Yan Q, Shen E, Weinstein A, Wang T. Regulation of glomerulotubular balance. IV. Implication of aquaporin 1 in flow-dependent proximal tubule transport and cell volume. American Journal Of Physiology. Renal Physiology 2022, 323: f642-f653. PMID: 36108052, PMCID: PMC9705020, DOI: 10.1152/ajprenal.00167.2022.Peer-Reviewed Original ResearchConceptsKO miceProximal tubulesMouse proximal tubulesWater reabsorptionAcid-base parametersKnockout miceAquaporin 1 knockout miceAquaporin-1Rat kidneyRenal clearance experimentsProximal tubule transportWater channel aquaporin-1Significant differencesHigh urine flowRat proximal tubuleKidney proximal tubulesWT miceUrine flowClearance experimentsGlomerulotubular balanceBlood pHTubule transportAQP1 knockout miceMiceFluid absorption
2004
Renal and intestinal transport defects in Slc26a6-null mice
Wang Z, Wang T, Petrovic S, Tuo B, Riederer B, Barone S, Lorenz JN, Seidler U, Aronson PS, Soleimani M. Renal and intestinal transport defects in Slc26a6-null mice. American Journal Of Physiology - Cell Physiology 2004, 288: c957-c965. PMID: 15574486, DOI: 10.1152/ajpcell.00505.2004.Peer-Reviewed Original ResearchConceptsWild-type miceProximal tubulesSlc26a6-null miceHCO3- secretionKidney proximal tubulesApical membrane ClNull miceBaseline rateNormal blood pressureCl-/formate exchangeBlood pressureKidney functionElectrolyte profileMucosal tissuesIntestinal physiologyUssing chambersSmall intestineMiceFluid absorptionNaCl absorptionStatistical significanceCl-/HCO3NaCl transportDuodenumTubules
2003
Inhibition of heme oxygenase decreases sodium and fluid absorption in the loop of Henle
Wang T, Sterling H, Shao WA, Yan Q, Bailey MA, Giebisch G, Wang WH. Inhibition of heme oxygenase decreases sodium and fluid absorption in the loop of Henle. American Journal Of Physiology. Renal Physiology 2003, 285: f484-f490. PMID: 12890663, DOI: 10.1152/ajprenal.00135.2003.Peer-Reviewed Original ResearchConceptsLoop of HenleThick ascending limbFluid absorptionRenal sodium excretionGlomerular filtration rateRenal clearance studiesNormal rat chowHO-2 expressionRenal clearance methodsInhibitor of HOWestern blot analysisDecrease sodiumHK ratsSodium excretionChromium mesoporphyrinHO-2Normal chowHK dietFiltration rateRat chowVivo microperfusionResult of inhibitionMicroperfusion experimentsClearance studiesClearance methodIntracellular Na concentration and Rb uptake in proximal convoluted tubule cells and abundance of Na/K-ATPase α1-subunit in NHE3−/− mice
Beck F, Neuhofer W, Dörge A, Giebisch G, Wang T. Intracellular Na concentration and Rb uptake in proximal convoluted tubule cells and abundance of Na/K-ATPase α1-subunit in NHE3−/− mice. Pflügers Archiv - European Journal Of Physiology 2003, 446: 100-105. PMID: 12690468, DOI: 10.1007/s00424-002-1001-z.Peer-Reviewed Original ResearchConceptsIntracellular Na concentrationNa/K-ATPaseΑ1 subunitTubule cellsProximal convoluted tubule cellsDistal convoluted tubuleWild-type miceNa/K-ATPase activityPCT cellsConvoluted tubule cellsIntracellular Cl- concentrationK-ATPaseWestern blot analysisK-ATPase activityNa concentrationRenal cortexCell Na concentrationConvoluted tubulesNa/K-ATPase α1 subunitNa/HNHE3 deficiencyK-ATPase α1-subunitMiceFluid absorptionRole 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 ResearchConceptsAng IIM ANG IIProximal tubulesFluid absorptionRole of PKCLuminal ANG IIAng II concentrationsIntracellular calcium mobilizationProximal tubule transportProximal tubular fluidTrimethoxybenzoic acid 8Modulation of effectsCAMP-independent mechanismAngiotensin IIIntracellular calciumTMB-8Calcium mobilizationTubule transportTubular fluidMicroperfusion techniqueSodium transportSuperficial segmentsRabbit kidneyPhysiological concentrationsTubules
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 synthaseInducible NOSEndothelial NOSProximal tubulesKnockout miceRole of iNOSNOS knockout miceENOS knockout miceINOS knockout miceIsoforms of NOSNitric oxide synthaseProximal tubule transportAcid-base statusAcid-base balanceINOS knockoutWild-type controlsKidney proximal tubulesMetabolic acidosisOxide synthaseTubule transportInhibitor LMiceFluid absorptionNOSTubules
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 IPotassiumSodiumConceptsWild-type miceNNOS knockout miceL-NAMEProximal tubulesBlood pressureMetabolic acidosisNeuronal nitric oxide synthase knockout miceNitric oxide synthase knockout miceAbsorption of fluidFluid absorptionNeuronal nitric oxide synthaseRenal clearance techniquesMean blood pressureSignificant metabolic acidosisSynthase knockout miceMonomethyl-L-arginine methyl esterNitric oxide synthaseWild-type control animalsProximal tubule transportLuminal perfusion solutionAcid-base balanceIntravenous bolusUrinary excretionUrine volumeClearance technique
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
1998
Renal and intestinal absorptive defects in mice lacking the NHE3 Na+/H+ exchanger
Schultheis P, Clarke L, Meneton P, Miller M, Soleimani M, Gawenis L, Riddle T, Duffy J, Doetschman T, Wang T, Giebisch G, Aronson P, Lorenz J, Shull G. Renal and intestinal absorptive defects in mice lacking the NHE3 Na+/H+ exchanger. Nature Genetics 1998, 19: 282-285. PMID: 9662405, DOI: 10.1038/969.Peer-Reviewed Original ResearchConceptsAcid-base balanceAbsorptive defectsNHE3-deficient miceFluid volume homeostasisRenal proximalSlight diarrheaPlasma aldosteroneBlood pressureHomozygous mutant miceExchanger mRNANHE2 isoformsBlood analysisMutant miceCompensatory mechanismsFluid absorptionNHE3 functionVolume homeostasisMiceDistribution of NHE3Cl-/HCO3Channel activityNHE3KidneyATPase mRNAIntestine
1995
Effects of chronic hyperfiltration on proximal tubule bicarbonate transport and cell electrolytes
Ohno A, Beck F, Pfaller W, Giebisch G, Wang T. Effects of chronic hyperfiltration on proximal tubule bicarbonate transport and cell electrolytes. Kidney International 1995, 48: 712-721. PMID: 7474656, DOI: 10.1038/ki.1995.342.Peer-Reviewed Original ResearchConceptsNa/H exchangeProximal tubulesUNX ratsK-ATPase activityBicarbonate absorptionBicarbonate transportChronic hyperfiltrationRemnant kidneyUnilateral nephrectomyFiltration rateCortical tubulesRenal clearanceBicarbonate levelsH secretionFluid absorptionMaximal transport rateBasolateral ion transportCompensatory responseMarked stimulationRubidium uptakeSimilar stimulationCell ion concentrationsBasolateral NaTubulesUNXStimulation of chloride transport by cAMP in rat proximal tubules
Wang T, Segal AS, Giebisch G, Aronson PS. Stimulation of chloride transport by cAMP in rat proximal tubules. American Journal Of Physiology 1995, 268: f204-f210. PMID: 7864157, DOI: 10.1152/ajprenal.1995.268.2.f204.Peer-Reviewed Original ResearchConceptsRat proximal tubuleProximal tubulesDibutyryl cAMPCapillary perfusateLate proximal tubuleProximal tubule cellsCl- channel blockerCl- channelsTranscellular Cl absorptionAddition of forskolinLuminal DIDSSensitive Cl- channelBasolateral membraneLuminal perfusateTubule cellsCAMP productionFluid absorptionCl absorptionMM ClPerfusateJclRecent evidenceLuminal membraneTubulesEffect of cAMP
1993
Renal bicarbonate reabsorption in the rat. IV. Bicarbonate transport mechanisms in the early and late distal tubule.
Wang T, Malnic G, Giebisch G, Chan Y. Renal bicarbonate reabsorption in the rat. IV. Bicarbonate transport mechanisms in the early and late distal tubule. Journal Of Clinical Investigation 1993, 91: 2776-2784. PMID: 8390489, PMCID: PMC443344, DOI: 10.1172/jci116519.Peer-Reviewed Original ResearchConceptsLate distal tubuleEarly distal tubuleDistal tubulesBicarbonate absorptionTubule segmentsFluid absorptionBicarbonate transportLuminal bicarbonate concentrationNet bicarbonate transportRenal bicarbonate reabsorptionLow K dietDistal tubule segmentsBicarbonate concentrationK-ATPase inhibitorPmol/minK dietBicarbonate secretionMicroperfusion experimentsBicarbonate reabsorptionH-ATPaseTubulesBafilomycin A1High rateRatsATPase inhibitor
1992
Effects of formate and oxalate on volume absorption in rat proximal tubule
Wang T, Giebisch G, Aronson PS. Effects of formate and oxalate on volume absorption in rat proximal tubule. American Journal Of Physiology 1992, 263: f37-f42. PMID: 1636743, DOI: 10.1152/ajprenal.1992.263.1.f37.Peer-Reviewed Original ResearchConceptsLuminal perfusateProximal tubulesCapillary perfusateLate proximal tubuleRat proximal tubuleHCO3- Ringer's solutionPhysiological rangePeritubular capillariesChannel blockersStandard Ringer solutionPerfusateFluid absorptionStimulatory effectNaCl absorptionRinger's solutionTubulesEffect of formateBlockers
1990
Time- and dose-dependent effects of protein kinase C on proximal bicarbonate transport
Wang T, Chan Y. Time- and dose-dependent effects of protein kinase C on proximal bicarbonate transport. The Journal Of Membrane Biology 1990, 117: 131-139. PMID: 2120446, DOI: 10.1007/bf01868680.Peer-Reviewed Original ResearchConceptsFluid reabsorptionProtein kinase CDose-dependent effectKinase CDose-response natureOriginal perfusatePerfusion timeΒ-phorbolCapillary perfusionLuminal perfusionPCT transportMaximal effectRenal tubulesBicarbonate absorptionRat kidneyFluid absorptionTotal CO2 changesBrush border membraneBasolateral sideTime-dependent effectsDose responseEIPAAmilorideM PMALuminal sideCholinergic effect on rat proximal convoluted tubule
Wang T, Chan Y. Cholinergic effect on rat proximal convoluted tubule. Pflügers Archiv - European Journal Of Physiology 1990, 415: 533-539. PMID: 2109302, DOI: 10.1007/bf02583503.Peer-Reviewed Original ResearchConceptsProximal convoluted tubulesPCT transportCholinergic effectsCholinergic receptorsCapillary perfusateInhibitory effectCarbachol-induced effectsFunctional cholinergic receptorsProximal tubular absorptionAddition of carbacholBicarbonate Ringer's solutionRenal functionTubular absorptionCholinergic agentsPeritubular capillariesRadioactive inulinSimultaneous perfusionCalcium influxHigh doseConvoluted tubulesCarbacholIonophore ABicarbonate absorptionFluid absorptionBasolateral side
1989
Neural control of distal tubular bicarbonate and fluid transport
Wang T, Chan Y. Neural control of distal tubular bicarbonate and fluid transport. American Journal Of Physiology 1989, 257: f72-f76. PMID: 2750926, DOI: 10.1152/ajprenal.1989.257.1.f72.Peer-Reviewed Original ResearchConceptsDistal tubulesRenal nerve activityProximal tubular reabsorptionEarly distal tubuleEffects of denervationLate distal tubuleDenervated kidneysReabsorb bicarbonateSham denervationNerve activityElectrolyte excretionTubular reabsorptionNeural regulationDenervationFluid reabsorptionBicarbonate absorptionFluid absorptionFluid samplesNeural controlVolume markerMicroperfusion methodTubulesBicarbonate concentrationJHCO3Reabsorption