2014
Kir1.1 (ROMK) and Kv7.1 (KCNQ1/KvLQT1) are essential for normal gastric acid secretion: importance of functional Kir1.1
Vucic E, Alfadda T, MacGregor GG, Dong K, Wang T, Geibel JP. Kir1.1 (ROMK) and Kv7.1 (KCNQ1/KvLQT1) are essential for normal gastric acid secretion: importance of functional Kir1.1. Pflügers Archiv - European Journal Of Physiology 2014, 467: 1457-1468. PMID: 25127675, DOI: 10.1007/s00424-014-1593-0.Peer-Reviewed Original ResearchConceptsGastric parietal cellsPotassium channelsParietal cellsΒ-subunitKir1.1 channelsWild-type miceSecretagogue-stimulated gastric acid secretionApical poleGastric glandsLeak pathwayPotential therapeutic targetKir1.1Proton secretionRegulatory characteristicsKv7.1Therapeutic targetATPaseCell numberParietal cell numberCellsNormal gastric acid secretionSecretionInhibitorsAcid secretionMiceCalcium-sensing receptor 20 years later
Alfadda TI, Saleh AM, Houillier P, Geibel JP. Calcium-sensing receptor 20 years later. American Journal Of Physiology - Cell Physiology 2014, 307: c221-c231. PMID: 24871857, PMCID: PMC4121584, DOI: 10.1152/ajpcell.00139.2014.Peer-Reviewed Original ResearchConceptsCellular ion transport mechanismsG protein-coupled receptor familyProtein-coupled receptor familyEnvironmental cuesExtracellular environmentOrgan physiologyReceptor familySense changesDifferent tissuesCellular levelCalcium-sensing receptorIon transport mechanismsPhysiologyReceptor physiologyAmino acid concentrationsDisease statesReceptorsSystemic physiologyDiversity of locationsReceptor mutationsDifferent organ systemsImportant roleMembersFamilyHomology
2010
Zinc Salts Provide a Novel, Prolonged and Rapid Inhibition of Gastric Acid Secretion
Kirchhoff P, Socrates T, Sidani S, Duffy A, Breidthardt T, Grob C, Viehl CT, Beglinger C, Oertli D, Geibel JP. Zinc Salts Provide a Novel, Prolonged and Rapid Inhibition of Gastric Acid Secretion. The American Journal Of Gastroenterology 2010, 106: 62. PMID: 20736941, DOI: 10.1038/ajg.2010.327.Peer-Reviewed Original ResearchConceptsProton pump inhibitorsGastric acid secretionAcid secretionRat gastric glandsRandomized cross-over studyIntact rat stomachAcid suppression therapyGastric glandsCross-over studyOnset of actionLong-term efficacyReturn of symptomsHealthy human volunteersSecretagogue-induced acid secretionStomach acid secretionProlonged therapySuppression therapyIntragastric pHPump inhibitorsSingle doseWhole stomachLifetime prevalenceRat modelRat stomachFaster onset
2009
Revisiting the parietal cell
Kopic S, Murek M, Geibel JP. Revisiting the parietal cell. American Journal Of Physiology - Cell Physiology 2009, 298: c1-c10. PMID: 19889964, DOI: 10.1152/ajpcell.00478.2009.Peer-Reviewed Original Research
2007
Intragastric Injection of Botulinum Toxin A for the Treatment of Obesity
Mittermair R, Keller C, Geibel J. Intragastric Injection of Botulinum Toxin A for the Treatment of Obesity. Obesity Surgery 2007, 17: 732-736. PMID: 17879570, DOI: 10.1007/s11695-007-9135-x.Peer-Reviewed Original ResearchConceptsTreatment of obesityDistal gastric bodyEarly satietyGastric bodyIntragastric injectionGroup 2Group 1Body weightClass I obesityBotulinum toxin AFeeling of satietyBackgroundBotulinum toxinU BTXObese patientsFemale patientsGastric motilityResultsBoth groupsMethodsAfter approvalToxin ASmooth muscleUniversity Ethics CommitteeEndoscopic proceduresPatientsObesitySatiety
2006
ΔF508 Mutation Results in Impaired Gastric Acid Secretion*
Sidani SM, Kirchhoff P, Socrates T, Stelter L, Ferreira E, Caputo C, Roberts KE, Bell RL, Egan ME, Geibel JP. ΔF508 Mutation Results in Impaired Gastric Acid Secretion*. Journal Of Biological Chemistry 2006, 282: 6068-6074. PMID: 17178714, DOI: 10.1074/jbc.m608427200.Peer-Reviewed Original ResearchConceptsCystic fibrosis transmembrane conductance regulatorATP-binding cassette (ABC) transportersFibrosis transmembrane conductance regulatorTransmembrane conductance regulatorMouse gastric glandsParietal cellsMultifunctional proteinCFTR proteinRegulatory proteinsTransport proteinsCassette transportersConductance regulatorRegulatory roleApical poleSecretagogue-induced acid secretionGland lumenGastric glandsSulfonylurea receptorProteinImpaired gastric acid secretionK-ATPaseCl(-) secretionImmunofluorescent localizationCl- channelsATP-sensitive potassium channelsThe KCNE2 Potassium Channel Ancillary Subunit Is Essential for Gastric Acid Secretion*
Roepke TK, Anantharam A, Kirchhoff P, Busque SM, Young JB, Geibel JP, Lerner DJ, Abbott GW. The KCNE2 Potassium Channel Ancillary Subunit Is Essential for Gastric Acid Secretion*. Journal Of Biological Chemistry 2006, 281: 23740-23747. PMID: 16754665, DOI: 10.1074/jbc.m604155200.Peer-Reviewed Original ResearchConceptsAncillary subunitsKCNE gene familyGastric acid secretionPotassium channel alpha subunitFirst genetic evidenceSecretory cellsProton secretionChannel alpha subunitGene familyKCNE familyParietal cell morphologyAcid secretionGenetic evidenceAlpha subunitHuman cardiac arrhythmiasParietal cellsChannel complexSubunitsCell morphologyKCNE2Normal gastrointestinal functionGenesKCNQ1Gene-dose effectCellsRole of calcium and other trace elements in the gastrointestinal physiology
Kirchhoff P, Geibel J. Role of calcium and other trace elements in the gastrointestinal physiology. World Journal Of Gastroenterology 2006, 12: 3229-3236. PMID: 16718844, PMCID: PMC4087967, DOI: 10.3748/wjg.v12.i20.3229.Peer-Reviewed Original ResearchConceptsCell type changesGastrointestinal tractTerrestrial organismsNutrient availabilityIntestinal epithelial cellsCellular behaviorTerminal differentiationExact functionEssential ionsAmino acidsNeuronal functionGastric acid secretionEpithelial cellsEntire gastrointestinal tractAllosteric modifierCaSR expressionRole of calciumElevated extracellularSecretory diarrheaAcid secretionCalcium handlingReceptorsNeoplastic diseaseGastrointestinal physiologyPhysiological effects
2004
Functions and roles of the extracellular Ca2+-sensing receptor in the gastrointestinal tract
Hebert SC, Cheng S, Geibel J. Functions and roles of the extracellular Ca2+-sensing receptor in the gastrointestinal tract. Cell Calcium 2004, 35: 239-247. PMID: 15200147, DOI: 10.1016/j.ceca.2003.10.015.Peer-Reviewed Original ResearchConceptsNormal cell proliferationGastrointestinal tractEpithelial cellsNutrient availabilityIntestinal epithelial cellsPotential roleGastrointestinal epithelial cellsL-amino acidsFood digestionRapid turnoverNutrient absorptionCell proliferationWater homeostasisGastric acid secretionGastrointestinal biologyEntire gastrointestinal tractAllosteric modifierCalcium intakeSecretory diarrheaAcid secretionCalcium handlingExtracellular Ca2Colon cancerReceptorsPhysiological effects
1999
Expression of an extracellular calcium-sensing receptor in rat stomach
Cheng* ‡, Qureshi§ I, Chattopadhyay‡ N, Qureshi§ A, Butters‡ R, Hall∥ A, Cima* R, Rogers∥ K, Hebert∥ S, Geibel§ J, Brown‡ E, Soybel* D, ¶NPS Pharmaceuticals I. Expression of an extracellular calcium-sensing receptor in rat stomach. Gastroenterology 1999, 116: 118-126. PMID: 9869609, DOI: 10.1016/s0016-5085(99)70235-0.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBase SequenceBlotting, NorthernCalciumCells, CulturedDNA, ComplementaryExtracellular SpaceGastric MucosaImmunohistochemistryMolecular Sequence DataMuscle, SmoothParietal Cells, GastricRatsRats, Sprague-DawleyReceptors, Calcium-SensingReceptors, Cell SurfaceReverse Transcriptase Polymerase Chain ReactionRNAStomachTranscription, GeneticConceptsGastric glandsExtracellular calcium-sensing receptorEpithelial cellsCalcium-sensing receptorReverse transcription-polymerase chain reactionGastric surface cellsMammalian gastric mucosaExpression of CARMyenteric neuronsSubmucosal plexusSurface cellsGastric functionPolymerase chain reactionNerve regionRat stomachGastric mucosaGlandular stomachExtracellular Ca2Secretory functionRat parathyroidSystemic Ca2AbstractTextLevels of Ca2CAR expressionStomach
1994
Luminal perfusion of isolated gastric glands
Waisbren S, Geibel J, Boron W, Modlin I. Luminal perfusion of isolated gastric glands. American Journal Of Physiology 1994, 266: c1013-c1027. PMID: 8178950, DOI: 10.1152/ajpcell.1994.266.4.c1013.Peer-Reviewed Original Research