2001
Characterization of apical membrane Cl-dependent Na/H exchange in crypt cells of rat distal colon
Rajendran V, Geibel J, Binder H. Characterization of apical membrane Cl-dependent Na/H exchange in crypt cells of rat distal colon. AJP Gastrointestinal And Liver Physiology 2001, 280: g400-g405. PMID: 11171622, DOI: 10.1152/ajpgi.2001.280.3.g400.Peer-Reviewed Original ResearchConceptsRat distal colonNa/H exchangeCl- channel blockerDistal colonChannel blockersCrypt cellsIntracellular pH recoveryExchange inhibitor amilorideColonic epithelial cellsApical membrane vesiclesCrypt glandsHigh doseHOE 694NA depletionAcid loadExchange inhibitorInhibitor amiloridePH recoveryEpithelial cellsUptake 1NHE isoformsAnion exchange inhibitorBlockersColonNa uptake
2000
Cl‐Dependent Na‐H Exchange: A Novel Colonic Crypt Transport Mechanism
BINDER H, RAJENDRAN V, GEIBEL J. Cl‐Dependent Na‐H Exchange: A Novel Colonic Crypt Transport Mechanism. Annals Of The New York Academy Of Sciences 2000, 915: 43-53. PMID: 11193600, DOI: 10.1111/j.1749-6632.2000.tb05222.x.Peer-Reviewed Original Research
1999
Differential regulation of NHE isoforms by sodium depletion in proximal and distal segments of rat colon
Ikuma M, Kashgarian M, Binder H, Rajendran V. Differential regulation of NHE isoforms by sodium depletion in proximal and distal segments of rat colon. American Journal Of Physiology 1999, 276: g539-g549. PMID: 9950829, DOI: 10.1152/ajpgi.1999.276.2.g539.Peer-Reviewed Original ResearchConceptsDietary sodium depletionSodium depletionDistal colonRat colonProtein expressionMRNA abundanceBlot analysisDose-dependent inhibitorApical membrane vesiclesElectroneutral NaCl absorptionWestern blot analysisDifferential regulationNormal ratsProximal colonHOE 694Multiple diverse effectsColonDistal segmentsNaCl absorptionNHE isoformsExchange activityExchanger isoformsNorthern blot analysisDifferential effectsPretranslational levelDistribution and regulation of apical Cl/anion exchanges in surface and crypt cells of rat distal colon
Rajendran V, Binder H. Distribution and regulation of apical Cl/anion exchanges in surface and crypt cells of rat distal colon. American Journal Of Physiology 1999, 276: g132-g137. PMID: 9886988, DOI: 10.1152/ajpgi.1999.276.1.g132.Peer-Reviewed Original Research
1997
Novel Transport Properties of Colonic Crypt Cells: Fluid Absorption and Cl-Dependent Na-H Exchange
Binder H, Singh S, Geibel J, Rajendran V. Novel Transport Properties of Colonic Crypt Cells: Fluid Absorption and Cl-Dependent Na-H Exchange. Comparative Biochemistry And Physiology Part A Molecular & Integrative Physiology 1997, 118: 265-269. PMID: 9366054, DOI: 10.1016/s0300-9629(97)00079-0.Peer-Reviewed Original ResearchConceptsNa-H exchangeCrypt cellsFluid absorptionLamina propria cellsColonic ion transportNet fluid secretionRat distal colonColonic crypt cellsPresence of myofibroblastsApical membrane vesiclesSecretory processRinger-like solutionDibutyryl cyclic AMPDistal colonCrypt preparationNeurohumoral agonistsAcid loadMorphologic techniquesFluid secretionGradient stimulationAbsorptive processesCyclic AMPIndividual cryptsMyofibroblastsBath solution
1995
Chloride-dependent Na-H Exchange A NOVEL MECHANISM OF SODIUM TRANSPORT IN COLONIC CRYPTS*
Rajendran V, Geibel J, Binder H. Chloride-dependent Na-H Exchange A NOVEL MECHANISM OF SODIUM TRANSPORT IN COLONIC CRYPTS*. Journal Of Biological Chemistry 1995, 270: 11051-11054. PMID: 7744735, DOI: 10.1074/jbc.270.19.11051.Peer-Reviewed Original ResearchConceptsNa-H exchangeColonic crypt cellsCrypt cellsAcid loadRat distal colonApical membrane vesiclesNovel transport processRate of intracellularDistal colonMM amilorideSodium transportApical membraneGradient stimulationColonic cryptsAmiloride inhibitionSodium movementNovel mechanismOutward gradientCompelling evidenceCellsSodiumUptakePrior studiesColonRecovery
1994
Apical membrane Cl-butyrate exchange: Mechanism of short chain fatty acid stimulation of active chloride absorption in rat distal colon
Rajendran V, Binder H. Apical membrane Cl-butyrate exchange: Mechanism of short chain fatty acid stimulation of active chloride absorption in rat distal colon. The Journal Of Membrane Biology 1994, 141: 51-58. PMID: 7966245, DOI: 10.1007/bf00232873.Peer-Reviewed Original ResearchConceptsRat distal colonFatty acid stimulationDistal colonShort-chain fatty acidsNa-H exchangeActive chloride absorptionHalf maximal inhibitory concentrationAcid stimulationApical membrane vesiclesChain fatty acidsChloride absorptionFatty acid exchangeCl- gradientInhibitory concentrationOutward Cl gradientButyrate concentrationExtravesicular ClColonCellular modelMembrane vesiclesFatty acidsStimulationFunctional NaDisulfonic acidCompelling evidence
1993
Cl-HCO3 and Cl-OH exchanges mediate Cl uptake in apical membrane vesicles of rat distal colon
Rajendran V, Binder H. Cl-HCO3 and Cl-OH exchanges mediate Cl uptake in apical membrane vesicles of rat distal colon. American Journal Of Physiology 1993, 264: g874-g879. PMID: 8498514, DOI: 10.1152/ajpgi.1993.264.5.g874.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic AcidAmilorideAnimalsBicarbonatesBiological TransportBumetanideCarrier ProteinsCell MembraneChloride-Bicarbonate AntiportersChloridesColonDose-Response Relationship, DrugHydrogen-Ion ConcentrationKineticsMembrane ProteinsOxalatesRatsRats, Sprague-DawleyConceptsRat distal colonDistal colonCl-OH exchangeApical membrane vesiclesAbsence of HCO3Regulation of intracellular
1991
Mechanism of short-chain fatty acid uptake by apical membrane vesicles of rat distal colon
Mascolo N, Rajendran V, Binder H. Mechanism of short-chain fatty acid uptake by apical membrane vesicles of rat distal colon. Gastroenterology 1991, 101: 331-338. PMID: 2065907, DOI: 10.1016/0016-5085(91)90008-9.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid4-Acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic AcidAnimalsAnionsBicarbonatesBiological Transport, ActiveButyratesButyric AcidCell MembraneColonFatty Acids, VolatileHydrogen-Ion ConcentrationIn Vitro TechniquesIntestinal AbsorptionRatsRats, Inbred StrainsConceptsRat distal colonDistal colonButyrate uptakeFatty acid uptakeApical membrane vesiclesHalf-maximal concentrationShort-chain fatty acid uptake
1989
Aldosterone induction of electrogenic sodium transport in the apical membrane vesicles of rat distal colon*
Rajendran V, Kashgarian M, Binder H. Aldosterone induction of electrogenic sodium transport in the apical membrane vesicles of rat distal colon*. Journal Of Biological Chemistry 1989, 264: 18638-18644. PMID: 2553716, DOI: 10.1016/s0021-9258(18)51514-3.Peer-Reviewed Original ResearchConceptsDistal colonRat distal colonNa-H exchangeElectrogenic sodium transportSodium transportExperimental ratsMicroM amilorideAmiloride-sensitive electrogenic sodium transportNormal rat distal colonEffects of aldosteroneElectroneutral sodium absorptionSodium concentrationApical membrane vesiclesAnalogues of amilorideVoltage-clamp conditionsDietary sodiumNormal ratsAldosterone inductionSodium absorptionColonComparable inhibitionRatsAmilorideAldosteronePotent inhibitor