2023
High dietary K+ intake inhibits proximal tubule transport
Wang T, Liu T, Xu S, Frindt G, Weinstein A, Palmer L. High dietary K+ intake inhibits proximal tubule transport. American Journal Of Physiology. Renal Physiology 2023, 325: f224-f234. PMID: 37318989, PMCID: PMC10396284, DOI: 10.1152/ajprenal.00013.2023.Peer-Reviewed Original ResearchConceptsGlomerular filtration rateFree-flow micropunctureUrine volumeFractional excretion of Na<sup>+</sup>Proximal tubulesFiltration rateFractional NaNephron segmentsExcretion of Na<sup>+</sup>Dietary K<sup>+</sup>NHE3 protein expressionExchanger isoform 3Increased urine volumeIncreased fractional excretionVolume reabsorptionAbsolute NaKidney functionProtein expressionIsoform 3PT transportAnesthetized animalsReabsorptionWestern blottingRatsExcretion
2013
REGULATION OF GLOMERULOTUBULAR BALANCE IV: IMPLICATION OF AQUAPORIN 1 IN FLOW‐DEPENDENT TRANSPORT AND CELL VOLUME
Du Z, Yan Q, Weinbaum S, Weinstein A, Wang T. REGULATION OF GLOMERULOTUBULAR BALANCE IV: IMPLICATION OF AQUAPORIN 1 IN FLOW‐DEPENDENT TRANSPORT AND CELL VOLUME. The FASEB Journal 2013, 27: 912.27-912.27. DOI: 10.1096/fasebj.27.1_supplement.912.27.Peer-Reviewed Original ResearchAQP-1Proximal tubulesKO miceWild-typeMicroperfused in vitroTransepithelial osmotic gradientHCO-3 transportWT miceNo significant differencePeritubular transportHCO-3 absorptionVolume reabsorptionPeritubular membraneWater reabsorptionAquaporin-1Mouse kidneyMicePerfusion rateH-ATPaseSignificant differenceTubulesReabsorptionOsmotic gradientCell volumePerfusion
2007
Flow-dependent transport in a mathematical model of rat proximal tubule
Weinstein A, Weinbaum S, Duan Y, Du Z, Yan Q, Wang T. Flow-dependent transport in a mathematical model of rat proximal tubule. American Journal Of Physiology. Renal Physiology 2007, 292: f1164-f1181. PMID: 17213461, DOI: 10.1152/ajprenal.00392.2006.Peer-Reviewed Original ResearchConceptsNa(+) reabsorptionRat proximal tubulesProximal tubulesModel tubuleDiuretic effectMouse proximal tubuleLuminal perfusion rateLow flowsSolute transportNaCl reabsorptionPeritubular transportTranscellular NaCl reabsorptionCarbonic anhydrase inhibitionGlomerulotubular balanceTubulesReabsorptionTransporter densityLuminal flowModel calculationsRatsFlow-dependent transportTransporter insertionMathematical modelPerfusion rateRate of hydrationFlow‐dependent transport in a mathematical model of rat proximal tubule
Weinstein A, Weinbaum S, Duan Y, Du Z, Yan Q, Wang T. Flow‐dependent transport in a mathematical model of rat proximal tubule. The FASEB Journal 2007, 21: a827-a828. DOI: 10.1096/fasebj.21.6.a827-d.Peer-Reviewed Original ResearchRat proximal tubulesNa+ reabsorptionProximal tubulesDiuretic effectModel tubuleOsmotic diuretic effectLow flowsSolute transportMouse tubulesLuminal perfusion rateNaCl reabsorptionPeritubular transportTranscellular NaCl reabsorptionCarbonic anhydrase inhibitionGlomerulotubular balanceTubulesReabsorptionTransporter densityLuminal flowMathematical modelRate of hydrationFlow-dependent transportInlet flowTransportTorque calculation
2004
Mechanosensory function of microvilli of the kidney proximal tubule
Du Z, Duan Y, Yan Q, Weinstein A, Weinbaum S, Wang T. Mechanosensory function of microvilli of the kidney proximal tubule. Proceedings Of The National Academy Of Sciences Of The United States Of America 2004, 101: 13068-13073. PMID: 15319475, PMCID: PMC516518, DOI: 10.1073/pnas.0405179101.Peer-Reviewed Original ResearchConceptsKidney proximal tubulesProximal tubulesNa+ reabsorptionNa+ transportNa+-H+ exchange activityProximal tubule Na+ reabsorptionNa+-H+ exchangeLuminal cell membraneMechanosensory functionNa+ absorptionTubular diameterLuminal diameterMouse kidneyEpithelial microvilliReabsorptionTubulesKidneyAutoregulatory mechanismNa+ uptakeHormonal systemsMiceActin cytoskeletonCell membraneTerminal webBending moment
2002
Formate-stimulated NaCl absorption in the proximal tubule is independent of the pendrin protein
Karniski LP, Wang T, Everett LA, Green ED, Giebisch G, Aronson PS. Formate-stimulated NaCl absorption in the proximal tubule is independent of the pendrin protein. American Journal Of Physiology. Renal Physiology 2002, 283: f952-f956. PMID: 12372770, DOI: 10.1152/ajprenal.00182.2002.Peer-Reviewed Original ResearchConceptsProximal tubulesChloride/formate exchangeNaCl reabsorptionChloride reabsorptionElectroneutral NaCl reabsorptionNaCl absorptionRole of pendrinFormate exchangePds-knockout mouseRecycling of formatePendrin proteinReabsorptionMicePendrinBrush border membrane vesiclesTubulesPresent studyChloride transportApical membrane
1998
Effect of metabolic acidosis on NaCl transport in the proximal tubule
Wang T, Egbert A, Aronson P, Giebisch G. Effect of metabolic acidosis on NaCl transport in the proximal tubule. American Journal Of Physiology 1998, 274: f1015-f1019. PMID: 9841491, DOI: 10.1152/ajprenal.1998.274.6.f1015.Peer-Reviewed Original ResearchConceptsMetabolic acidosisProximal tubulesNaCl reabsorptionRat proximal tubule segmentsAcidotic ratsNaCl transportNaCl absorptionLate proximal tubuleProximal tubule segmentsControl ratsCapillary perfusateBicarbonate absorptionNephron segmentsAcidosisTubule segmentsRatsRecent evidenceJclTubulesFormate exchangeReabsorptionDifferential regulation
1995
Effects of a novel KATP channel blocker on renal tubule function and K channel activity.
Wang T, Wang W, Klein-Robbenhaar G, Giebisch G. Effects of a novel KATP channel blocker on renal tubule function and K channel activity. Journal Of Pharmacology And Experimental Therapeutics 1995, 273: 1382-9. PMID: 7791111.Peer-Reviewed Original ResearchConceptsCortical collecting tubuleKATP channel blockerChannel blockersPotassium recyclingPotassium secretionAscending limbATP-sensitive potassium channelsActivation of KATPApical potassium conductanceReduced potassium secretionK channel activityRenal tubule functionLoop of HenleModulate NaCl reabsorptionPotassium conductanceSodium reabsorptionK secretionApical membranePrincipal cellsTubule functionPotassium channelsKATPBlockersReabsorption