2013
The calcium sensing receptor modulates fluid reabsorption and acid secretion in the proximal tubule
Capasso G, Geibel PJ, Damiano S, Jaeger P, Richards WG, Geibel JP. The calcium sensing receptor modulates fluid reabsorption and acid secretion in the proximal tubule. Kidney International 2013, 84: 277-284. PMID: 23615500, DOI: 10.1038/ki.2013.137.Peer-Reviewed Original ResearchMeSH KeywordsAcid-Base EquilibriumAnimalsCalcimimetic AgentsCalciumHydrogen-Ion ConcentrationIn Vitro TechniquesKidney Tubules, ProximalMaleMiceMice, KnockoutNuclear ProteinsPerfusionPuncturesRatsRats, Sprague-DawleyReceptors, Calcium-SensingReceptors, G-Protein-CoupledSodium-Hydrogen ExchangersTranscription FactorsConceptsProximal tubulesLuminal calcium concentrationFluid reabsorptionAcid secretionKnockout miceCalcium ion concentrationCalcium concentrationRole of CaSRActivation of CaSRCalcium sensing receptorCalcium-sensing receptorMouse proximal tubulesProton secretionSodium-hydrogen exchangerCalcimimetic agentBicarbonate absorptionSensing receptorCaSRFluid absorptionSecretionReabsorptionMiceCalcimimeticsTubulesLuminal membrane
2008
Mouse model of type II Bartter's syndrome. II. Altered expression of renal sodium- and water-transporting proteins
Wagner CA, Loffing-Cueni D, Yan Q, Schulz N, Fakitsas P, Carrel M, Wang T, Verrey F, Geibel JP, Giebisch G, Hebert SC, Loffing J. Mouse model of type II Bartter's syndrome. II. Altered expression of renal sodium- and water-transporting proteins. American Journal Of Physiology. Renal Physiology 2008, 294: f1373-f1380. PMID: 18322017, DOI: 10.1152/ajprenal.00613.2007.Peer-Reviewed Original ResearchMeSH KeywordsAdaptation, PhysiologicalAnimalsBartter SyndromeCarrier ProteinsCation Transport ProteinsDinoprostoneDisease Models, AnimalEpithelial Sodium ChannelsKidney Tubules, DistalKidney Tubules, ProximalLoop of HenleMiceMice, Mutant StrainsPotassium Channels, Inwardly RectifyingReverse Transcriptase Polymerase Chain ReactionSodiumSodium-Hydrogen Exchanger 3Sodium-Hydrogen ExchangersSodium-Phosphate Cotransporter Proteins, Type IIaSodium-Potassium-Chloride SymportersSolute Carrier Family 12, Member 1Up-RegulationWaterConceptsThick ascending limbBartter's syndromeBartter-like phenotypeType II Bartter's syndromeWild-type miceAntenatal Bartter syndromeWild-type littermatesROMK null micePlasma aldosteroneMaternal polyhydramniosRenal sodiumVolume depletionRenal tubulopathyMouse modelSemiquantitative immunoblottingProximal tubulesAscending limbKidney homogenatesSyndromeHenle's loopNull miceDCT cellsWater transport proteinsCompensatory mechanismsMice
2006
Distal tubule acidification.
Geibel JP. Distal tubule acidification. Journal Of Nephrology 2006, 19 Suppl 9: s18-26. PMID: 16736436.Peer-Reviewed Original Research
2004
Renal Vacuolar H+-ATPase
Wagner CA, Finberg KE, Breton S, Marshansky V, Brown D, Geibel JP. Renal Vacuolar H+-ATPase. Physiological Reviews 2004, 84: 1263-1314. PMID: 15383652, DOI: 10.1152/physrev.00045.2003.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsProximal tubular bicarbonate reabsorptionDistal renal tubular acidosisTubular bicarbonate reabsorptionRenal tubular acidosisFinal urinary acidificationTubular acidosisElectrolyte statusBicarbonate reabsorptionMonogenic defectsProximal tubulesUrinary acidificationKidneyATP-dependent transportVariety of factorsHigher numberPatientsIntracellular organellesAcidosisRegulatory proteinsLocalization patterns
2003
Localization and Regulation of the ATP6V0A4 (a4) Vacuolar H+-ATPase Subunit Defective in an Inherited Form of Distal Renal Tubular Acidosis
Stehberger PA, Schulz N, Finberg KE, Karet FE, Giebisch G, Lifton RP, Geibel JP, Wagner CA. Localization and Regulation of the ATP6V0A4 (a4) Vacuolar H+-ATPase Subunit Defective in an Inherited Form of Distal Renal Tubular Acidosis. Journal Of The American Society Of Nephrology 2003, 14: 3027-3038. PMID: 14638902, DOI: 10.1097/01.asn.0000099375.74789.ab.Peer-Reviewed Original ResearchConceptsDistal renal tubular acidosisRenal tubular acidosisLoop of HenleProximal tubulesTubular acidosisMouse kidneyA4 expressionDistal tubulesDistal convoluted tubuleProtein expression levelsElectrolyte intakeA4 proteinConvoluted tubulesMouse nephron segmentsNephron segmentsApical stainingWestern blottingAcidosisProtein expressionKidneyATPase activityDistal portionHenleExpression levelsTubulesA rapid enzymatic method for the isolation of defined kidney tubule fragments from mouse
Wagner CA, Lükewille U, Valles P, Breton S, Brown D, Giebisch GH, Geibel JP. A rapid enzymatic method for the isolation of defined kidney tubule fragments from mouse. Pflügers Archiv - European Journal Of Physiology 2003, 446: 623-632. PMID: 12748863, DOI: 10.1007/s00424-003-1082-3.Peer-Reviewed Original ResearchConceptsProximal tubulesTubule fragmentsMouse kidneyKidney tubule fragmentsCollagenase digestion techniqueMouse proximal tubulesUnits/minTrypan blue exclusionKidney functionInner stripeOuter medullaIntercalated cellsIndependent intracellularBlue exclusionTrypan blueTubulesKidneyMicePH-sensitive dyeLight microscopyDuctAnimalsFurther characterizationATPase activityFunctional characteristics
1998
Angiotensin II stimulates vesicular H+-ATPase in rat proximal tubular cells
Wagner C, Giebisch G, Lang F, Geibel J. Angiotensin II stimulates vesicular H+-ATPase in rat proximal tubular cells. Proceedings Of The National Academy Of Sciences Of The United States Of America 1998, 95: 9665-9668. PMID: 9689138, PMCID: PMC21396, DOI: 10.1073/pnas.95.16.9665.Peer-Reviewed Original ResearchConceptsAngiotensin IIProximal tubulesIon secretionEffect of AIIRat proximal tubular cellsAngiotensin II stimulatesRemoval of ClPH-sensitive fluorescent dye 2Proximal tubular cellsNa/H exchangerBafilomycin A1Proximal tubule fragmentsTubular cellsBicarbonate reabsorptionHCO3- reabsorptionTubule fragmentsH exchangerATPase activityFluorescent dye 2Proton pump inhibitor bafilomycin A1Intracellular pHTubulesSecretionPresent studyCell pH
1993
Apical H+-ATPase Activity in the Rabbit Proximal Tubule
Geibel J. Apical H+-ATPase Activity in the Rabbit Proximal Tubule. Cellular Physiology And Biochemistry 1993, 3: 34-41. DOI: 10.1159/000154666.Peer-Reviewed Original Research
1990
Angiotensin II stimulates both Na(+)-H+ exchange and Na+/HCO3- cotransport in the rabbit proximal tubule.
Geibel J, Giebisch G, Boron W. Angiotensin II stimulates both Na(+)-H+ exchange and Na+/HCO3- cotransport in the rabbit proximal tubule. Proceedings Of The National Academy Of Sciences Of The United States Of America 1990, 87: 7917-7920. PMID: 2172967, PMCID: PMC54862, DOI: 10.1073/pnas.87.20.7917.Peer-Reviewed Original ResearchConceptsAngiotensin IIHCO3- reabsorptionProximal tubulesEffect of AIIS1 proximal tubulesNM angiotensin IIPH-sensitive fluorescent dye 2Rat proximal tubuleRabbit proximal tubuleSuperficial nephronsPotent stimulusBasolateral administrationRabbit kidneyFluorescent dye 2Basolateral solutionBasolateral stepTransporter activityTubulesIonic mechanismsCotransportKidneyAdministrationNephron
1989
Basolateral sodium-coupled acid-base transport mechanisms of the rabbit proximal tubule
Geibel J, Giebisch G, Boron W. Basolateral sodium-coupled acid-base transport mechanisms of the rabbit proximal tubule. American Journal Of Physiology 1989, 257: f790-f797. PMID: 2556038, DOI: 10.1152/ajprenal.1989.257.5.f790.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic AcidAcid-Base EquilibriumAnimalsBiological TransportBiomechanical PhenomenaCarrier ProteinsChloridesDrug ResistanceHydrogen-Ion ConcentrationKidney Tubules, ProximalRabbitsSodiumSodium-Hydrogen ExchangersEffects of acetate on luminal acidification processes in the S3 segment of the rabbit proximal tubule
Geibel J, Giebisch G, Boron W. Effects of acetate on luminal acidification processes in the S3 segment of the rabbit proximal tubule. American Journal Of Physiology 1989, 257: f586-f594. PMID: 2801961, DOI: 10.1152/ajprenal.1989.257.4.f586.Peer-Reviewed Original Research