2019
Activation of the Calcium Sensing Receptor Decreases Secretagogue-Induced Fluid Secretion in the Rat Small Intestine
Barahona MJ, Maina RM, Lysyy T, Finotti M, Caturegli G, Baratta V, D’Amico F, Mulligan D, Geibel JP. Activation of the Calcium Sensing Receptor Decreases Secretagogue-Induced Fluid Secretion in the Rat Small Intestine. Frontiers In Physiology 2019, 10: 439. PMID: 31130866, PMCID: PMC6509940, DOI: 10.3389/fphys.2019.00439.Peer-Reviewed Original ResearchPresence of forskolinFluid secretionSmall intestineAC-265347Fluid absorptionIntestinal fluid secretionCalcium-sensing receptorSprague-Dawley ratsNew therapeutic targetsNet fluid absorptionDose-dependent mannerRat small intestineMM CaAbsence of forskolinMammalian gastrointestinal tractFluid hypersecretionDiarrheal illnessIntraluminal perfusionPotent secretagogueDawley ratsGastrointestinal tractCaSR activatorsElectrolyte balanceTherapeutic targetLuminal perfusate
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
2001
Na+-dependent fluid absorption in intact perfused rat colonic crypts
Geibel J, Rajendran V, Binder H. Na+-dependent fluid absorption in intact perfused rat colonic crypts. Gastroenterology 2001, 120: 144-150. PMID: 11208723, DOI: 10.1053/gast.2001.20890.Peer-Reviewed Original ResearchMeSH Keywords4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAnimalsBicarbonatesChloridesColonGanglionic StimulantsGlutamatesIn Vitro TechniquesIntestinal AbsorptionInulinIsotonic SolutionsMalePerfusionQuaternary Ammonium CompoundsRatsRats, Sprague-DawleyRinger's SolutionSodiumSodium-Hydrogen ExchangersTritiumConceptsNet fluid absorptionRat colonic cryptsCl- channel blockerFluid absorptionNeurohumoral stimulationChannel blockersColonic cryptsLumen ClAbsorptive processesInhibitor of NaCl(-) secretionAbstractTextCrypt cellsExchange inhibitorMicroperfusion techniqueFluid secretionL DIDSAmiloride analoguesMammalian colonSecretionAnion exchange inhibitorCryptsSignificant increaseAIMSSecretory process
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
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
Fluid absorption in isolated perfused colonic crypts.
Singh S, Binder H, Boron W, Geibel J. Fluid absorption in isolated perfused colonic crypts. Journal Of Clinical Investigation 1995, 96: 2373-2379. PMID: 7593625, PMCID: PMC185889, DOI: 10.1172/jci118294.Peer-Reviewed Original ResearchConceptsCrypt cellsNM vasoactive intestinal peptideFluid absorptionLarge intestinal functionColonic cryptsVasoactive intestinal peptideLamina propria cellsNet fluid secretionRat distal colonNet fluid absorptionDibutyryl cyclic AMPIntestinal peptideDistal colonIntestinal functionLamina propriaPathophysiological paradigmCrypt preparationMM acetylcholineBasal stateNeurohumoral agonistsFluid secretionCellular elementsEpithelial cellsIntestinal cryptsCrypts