2025
American Foregut Society White Paper Report on the Use of Potassium-Competitive Acid Blockers in the Treatment of Gastroesophageal Reflux Disease
Spechler S, Kolb J, Dunbar K, Gyawali C, Bell R, Fass R, Katz P, Laine L, Lipham J, Schnoll-Sussman F, Souza R, Yadlapati R, Kahrilas P. American Foregut Society White Paper Report on the Use of Potassium-Competitive Acid Blockers in the Treatment of Gastroesophageal Reflux Disease. Foregut The Journal Of The American Foregut Society 2025 DOI: 10.1177/26345161251325874.Peer-Reviewed Original ResearchPotassium-competitive acid blockerGastroesophageal reflux diseaseProton pump inhibitorsTreatment of gastroesophageal reflux diseaseReflux diseaseAcid blockerSuppression of gastric acid secretionNon-erosive reflux diseaseGastroesophageal reflux disease treatmentInhibit gastric acid productionTreat gastroesophageal reflux diseaseGastric acid secretionRAND/UCLA appropriateness methodologyGastric acid productionPanelistsAcid productionErosive esophagitisPump inhibitorsFDA approvalAcid secretionForegut surgeonsClinical practiceMedical treatment
2024
Prenatal opioid exposure significantly impacts placental protein kinase C (PKC) and drug transporters, leading to drug resistance and neonatal opioid withdrawal syndrome
Radhakrishna U, Radhakrishnan R, Uppala L, Muvvala S, Prajapati J, Rawal R, Bahado-Singh R, Sadhasivam S. Prenatal opioid exposure significantly impacts placental protein kinase C (PKC) and drug transporters, leading to drug resistance and neonatal opioid withdrawal syndrome. Frontiers In Neuroscience 2024, 18: 1442915. PMID: 39238930, PMCID: PMC11376091, DOI: 10.3389/fnins.2024.1442915.Peer-Reviewed Original ResearchNeonatal opioid withdrawal syndromeNeonatal opioid withdrawal syndrome treatmentRegulation of drug transportersOpioid use disorderOpioid withdrawal syndromeProtein kinase CDrug transportATP-binding cassetteDrug resistanceWithdrawal syndromeSevere neonatal opioid withdrawal syndromeSolute carrierPrenatal opioid exposureOpioid-exposed infantsATP-binding cassette drug transportersLevels of ATP-binding cassetteIllumina Infinium MethylationEPIC arrayKinase CMethylation changesGastric acid secretionImprove treatment outcomesDrug-drug interactionsMaternal opioidsMaternal relapseInfinium MethylationEPIC array
2019
Induction of Secretagogue Independent Gastric Acid Secretion via a Novel Aspirin-Activated Pathway
Kitay AM, Ferstl FS, Link A, Geibel JP. Induction of Secretagogue Independent Gastric Acid Secretion via a Novel Aspirin-Activated Pathway. Frontiers In Physiology 2019, 10: 1264. PMID: 31649553, PMCID: PMC6795678, DOI: 10.3389/fphys.2019.01264.Peer-Reviewed Original ResearchGastric acid secretionNon-selective NOS inhibitor L-NAMENOS inhibitor L-NAMEInhibitor L-NAMEAcid secretionL-NAMESoluble guanylyl cyclase inhibitor 1HGuanylyl cyclase inhibitor 1HIncreases nitric oxide productionUsage of aspirinGastric glandsPH-sensitive dye BCECF-AMNitric oxide productionVariety of cancersNovel secretagogueBlood clot formationAspirin exposureChronic conditionsMucosal barrierRepetitive dosesUlcer formationAspirin consumptionBasolateral exposureAspirinClot formation
2018
Modulations in extracellular calcium lead to H+-ATPase-dependent acid secretion: a clarification of PPI failure
Kitay AM, Schneebacher MT, Schmitt A, Heschl K, Kopic S, Alfadda T, Alsaihati A, Link A, Geibel J. Modulations in extracellular calcium lead to H+-ATPase-dependent acid secretion: a clarification of PPI failure. AJP Gastrointestinal And Liver Physiology 2018, 315: g36-g42. PMID: 29517927, DOI: 10.1152/ajpgi.00132.2017.Peer-Reviewed Original ResearchConceptsAcid secretionParietal cellsExtracellular calciumGastric parietal cellsProton pump inhibitor exposureExtracellular CaPotassium-free conditionsRecurrent reflux symptomsCalcium sensing receptorGastric acid secretionPPI failurePPI therapyReflux symptomsIsolated gastric glandsInhibitor exposureCalcimimetic R568Pharmacological targetsSensing receptorAbsence of sodiumCalcium concentrationCaSRGastric glandsSecretionATPase activityExcretion pathway
2017
Activation of Secretagogue Independent Gastric Acid Secretion via Endothelial Nitric Oxide Synthase Stimulation in Rats
Kitay AM, Link A, Geibel JP. Activation of Secretagogue Independent Gastric Acid Secretion via Endothelial Nitric Oxide Synthase Stimulation in Rats. Cellular Physiology And Biochemistry 2017, 44: 1606-1615. PMID: 29212068, DOI: 10.1159/000485755.Peer-Reviewed Original ResearchConceptsNitric oxide synthaseGastric acid secretionAcid secretionL-arginineL-NAMENO/sGC/cGMP pathwayNitric oxideSGC/cGMP pathwayParietal cellsNitric oxide synthase stimulationSGC inhibitor ODQL-arginine exposureAcid-related diseasesPossible intracellular mechanismsNovel secretagogueRat parietal cellsIsolated gastric glandsUlcer diseaseOxide synthaseCGMP pathwayImmune functionImportant mediatorIntracellular mechanismsSecretionGastric glandsStomach and Bone
Kitay AM, Geibel JP. Stomach and Bone. Advances In Experimental Medicine And Biology 2017, 1033: 97-131. PMID: 29101653, DOI: 10.1007/978-3-319-66653-2_6.Peer-Reviewed Original ResearchConceptsBone metabolismGastric acid secretionCalcium-sensing receptorVitamin DParathyroid glandsAcid secretionGastrointestinal organsTherapeutic implicationsEndocrine modulatorsCalcium homeostasisDiseaseStomachOrgansMetabolismImportant playersIntermediary organDiverse tissuesDysfunctionCaSRPTHCalcitoninKidneySecretionIntestineReceptorsTu1597 Zinc Acts as a Potent Inhibitor of Aspirin Induced Gastric Acid Secretion in Rat Gastric Glands
Ferstl F, Kitay A, Geibel J. Tu1597 Zinc Acts as a Potent Inhibitor of Aspirin Induced Gastric Acid Secretion in Rat Gastric Glands. Gastroenterology 2017, 152: s912. DOI: 10.1016/s0016-5085(17)33116-5.Peer-Reviewed Original ResearchGastric acid secretionChapter 2 Molecular Aspects of the Calcium-Sensing Receptor and Calcium Homeostasis
Alkukhun A, Munoz-Abraham A, Judeeba S, Geibel J. Chapter 2 Molecular Aspects of the Calcium-Sensing Receptor and Calcium Homeostasis. 2017, 15-26. DOI: 10.1016/b978-0-12-802168-2.00002-6.ChaptersCalcium homeostasisImmune barrier functionCalcium sensing receptorGastric acid secretionCalcium-sensing receptorExtracellular calcium levelsVitamin DAntidiarrheal effectBile flowHormone secretionParathyroid glandsImmune responseGastrointestinal tractAcid secretionIntestinal floraElectrolyte balanceCalcium levelsBone mineralizationBarrier functionCaSROsteoclast proliferationKey modulatorReceptorsSecretionPhysiological functions
2016
Expression of KCNJ1 (ROMK) in the Gastrointestinal Tract
Han J, Lee S, Ishikawa Y, Guo X, Xu S, Wang T. Expression of KCNJ1 (ROMK) in the Gastrointestinal Tract. The FASEB Journal 2016, 30 DOI: 10.1096/fasebj.30.1_supplement.1224.31.Peer-Reviewed Original ResearchROMK expressionDistal colonMRNA expressionKO miceRenal outer medullary potassium channelEpithelial cellsGI tractGastric acid secretionGastrointestinal (GI) tractHK intakeROMK channelsWT miceDistal nephronReal-time PCRApical membraneROMKPotassium channelsAcid secretionParietal cellsIF stainingRenal tubulesQ-PCR dataEsophagusDiet animalsGastrointestinal tract
2015
Ghrelin
Müller T, Nogueiras R, Andermann M, Andrews Z, Anker S, Argente J, Batterham R, Benoit S, Bowers C, Broglio F, Casanueva F, D'Alessio D, Depoortere I, Geliebter A, Ghigo E, Cole P, Cowley M, Cummings D, Dagher A, Diano S, Dickson S, Diéguez C, Granata R, Grill H, Grove K, Habegger K, Heppner K, Heiman M, Holsen L, Holst B, Inui A, Jansson J, Kirchner H, Korbonits M, Laferrère B, LeRoux C, Lopez M, Morin S, Nakazato M, Nass R, Perez-Tilve D, Pfluger P, Schwartz T, Seeley R, Sleeman M, Sun Y, Sussel L, Tong J, Thorner M, van der Lely A, van der Ploeg L, Zigman J, Kojima M, Kangawa K, Smith R, Horvath T, Tschöp M. Ghrelin. Molecular Metabolism 2015, 4: 437-460. PMID: 26042199, PMCID: PMC4443295, DOI: 10.1016/j.molmet.2015.03.005.Peer-Reviewed Original ResearchGastrointestinal peptide hormone ghrelinGrowth hormone secretagogue receptorSleep/wake rhythmGastric acid secretionSystemic energy metabolismPeptide hormone ghrelinPeripheral actionsGut motilitySecretagogue receptorHormone ghrelinAcid secretionGlucose metabolismGhrelinEndogenous ligandTaste sensationEnergy metabolismSecretionMetabolismDiverse biological functionsYearsHormone
2013
Gastric Acid, Calcium Absorption, and Their Impact on Bone Health
Kopic S, Geibel JP. Gastric Acid, Calcium Absorption, and Their Impact on Bone Health. Physiological Reviews 2013, 93: 189-268. PMID: 23303909, DOI: 10.1152/physrev.00015.2012.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntacidsBone and BonesBone Diseases, MetabolicCalcitoninCalciumGastric AcidGastric MucosaHistamine H2 AntagonistsHomeostasisHumansHydrogen-Ion ConcentrationIntestinal AbsorptionIntestinal MucosaIntestinesParathyroid HormoneProton Pump InhibitorsReceptors, Calcium-SensingSignal TransductionVitamin DConceptsBone healthCalcium absorptionIntestinal calcium absorptionGastric acid secretionSystemic calcium homeostasisAdequate intestinal absorptionGastric acidityCalcium balanceGastric acidAcid secretionIntestinal absorptionCalcium homeostasisNeuroendocrine regulationCalcium uptakePhysiological processesPhysiological basisPotential linkHealthSecretionIntestine
2010
Insulin Antagonizes Glucose-Induced Gastric Acid Secretion via the AMP Kinase - A Reason for the High Prevalence of Peptic Ulcer Disease and GERD in DM 2?
von Keudell A, Lehmann R, Kopic S, Murek M, Boroumand R, Geibel J. Insulin Antagonizes Glucose-Induced Gastric Acid Secretion via the AMP Kinase - A Reason for the High Prevalence of Peptic Ulcer Disease and GERD in DM 2? The American Journal Of Gastroenterology 2010, 105: s37. DOI: 10.14309/00000434-201010001-00097.Peer-Reviewed Original ResearchCaSR Mediated Gastric Acid Secretion via the Vacuolar H+-ATPase - With Special Emphasis on the Effect of Extracellular Calcium and Changes in Systemic pH
Schmitt A, Bloecker K, Geibel J. CaSR Mediated Gastric Acid Secretion via the Vacuolar H+-ATPase - With Special Emphasis on the Effect of Extracellular Calcium and Changes in Systemic pH. The American Journal Of Gastroenterology 2010, 105: s41. DOI: 10.14309/00000434-201010001-00109.Peer-Reviewed Original ResearchZinc 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 onsetEthanol Inhibits Gastric Acid Secretion in Rats Through Increased AMP-Kinase Activity
Kopic S, Corradini S, Sidani S, Murek M, Vardanyan A, Föller M, Ritter M, Geibel JP. Ethanol Inhibits Gastric Acid Secretion in Rats Through Increased AMP-Kinase Activity. Cellular Physiology And Biochemistry 2010, 25: 195-202. PMID: 20110680, DOI: 10.1159/000276553.Peer-Reviewed Original ResearchConceptsGastric acid secretionAcid secretionSecretagogue-induced acid secretionInhibits gastric acid secretionShort-term ethanol exposurePH-sensitive dye BCECFLow-dose ethanolCompound CAMPK inhibitor compound CSpecific AMPK inhibitor compound CEffects of ethanolInhibitor compound CEthanol exposureRat gastric glandsActivation of AMPKInteraction of ethanolRat gastric parietal cellsFluorescence digital imagingGastric parietal cellsAMP kinase activityDye BCECFInhibitory effectSecretionParietal cellsAMPK pathway
2009
The Functions and Roles of the Extracellular Ca2+–Sensing Receptor along the Gastrointestinal Tract
Geibel JP, Hebert SC. The Functions and Roles of the Extracellular Ca2+–Sensing Receptor along the Gastrointestinal Tract. Annual Review Of Physiology 2009, 71: 205-217. PMID: 19575679, DOI: 10.1146/annurev.physiol.010908.163128.Peer-Reviewed Original ResearchConceptsGastrointestinal tractNormal gut physiologyNutrient availabilityDigestion of foodRapid turnoverAmino acidsColonic fluid transportFunctional digestive tractGastric acid secretionCalcium-sensing receptorOrganic nutrientsWater homeostasisEntire gastrointestinal tractPotent targetGut physiologyEpithelial cellsIntestinal epitheliumSecretory diarrheaAcid secretionDigestive tractExtracellular Ca2Colon cancerReceptorsNormal saltFluid secretion
2007
Stimulatory Pathways of the Calcium-Sensing Receptor on Acid Secretion in Freshly Isolated Human Gastric Glands
Remy C, Kirchhoff P, Hafner P, Busque S, Mueller M, Geibel J, Wagner C. Stimulatory Pathways of the Calcium-Sensing Receptor on Acid Secretion in Freshly Isolated Human Gastric Glands. Cellular Physiology And Biochemistry 2007, 19: 33-42. PMID: 17310098, DOI: 10.1159/000099190.Peer-Reviewed Original ResearchConceptsHeterotrimeric G proteinsHuman gastric glandsMAP kinaseGastric parietal cellsATPase activityG proteinsGastric acid secretionERK 1/2 MAP kinaseIndependent PKC isoformsStimulation of CaSRERK1/2 MAP kinasesAcid secretionProtein kinase CPKC-delta isoformParietal cellsStimulatory effectChelator of intracellularActivation of PKCGastric glandsHuman gastric parietal cellsPLC inhibitor U73122Sensitive heterotrimeric G proteinsPD 098059General inhibitorPKC isoformsPI3 Kinase Dependent Stimulation of Gastric Acid Secretion by Dexamethasone
Lang P, Schniepp R, Kirchhoff P, Socrates T, Sidani S, Geibel J. PI3 Kinase Dependent Stimulation of Gastric Acid Secretion by Dexamethasone. Cellular Physiology And Biochemistry 2007, 20: 527-534. PMID: 17762179, DOI: 10.1159/000107536.Peer-Reviewed Original ResearchMeSH KeywordsAndrostadienesAnimalsCimetidineDexamethasoneGastric AcidGastric MucosaH(+)-K(+)-Exchanging ATPaseMaleNitrobenzoatesPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsPotassium Channel BlockersProtein Kinase InhibitorsProton Pump InhibitorsRatsRats, Sprague-DawleyStaurosporineWortmanninConceptsGastric acid secretionProtein kinase inhibitor staurosporinePI3-kinase inhibitor wortmanninAcid secretionKinase inhibitor staurosporineKinase inhibitor wortmanninPI3-kinase pathwayPeptic ulcerDexamethasone effectApical Cl- channelsKinase pathwayInhibitor wortmanninInhibitor staurosporineExcessive gastric acid secretionProton extrusionATPase inhibitor omeprazoleCl- channel blockers NPPBCl- channelsChannel blocker NPPBDependent stimulationDexamethasone injectionVivo pretreatmentInhibitor omeprazoleParietal cellsSecretionEthanol inhibits gastric acid secretion in rats through increased AMP‐K activity
Corradini S, Kopic S, Ritter M, Geibel J. Ethanol inhibits gastric acid secretion in rats through increased AMP‐K activity. The FASEB Journal 2007, 21: a1317-a1317. DOI: 10.1096/fasebj.21.6.a1317-c.Peer-Reviewed Original ResearchSecretagogue-induced acid secretionAcid secretionRate of alkalinizationLow-dose ethanol exposureCompound CPH-sensitive dye BCECFLow-dose ethanolGastric acid secretionInhibitor compound CEthanol exposureRat gastric glandsVariety of cellsNH4Cl prepulseRat gastric parietal cellsGastric parietal cellsSecretagogue carbacholPotent modulatorDye BCECFInhibitory effectParietal cellsSecretionGastric glandsAMP kinasePresent studyGland
2006
Characteristics of the K+-competitive H+,K+-ATPase inhibitor AZD0865 in isolated rat gastric glands
Kirchhoff P, Andersson K, Socrates T, Sidani S, Kosiek O, Geibel J. Characteristics of the K+-competitive H+,K+-ATPase inhibitor AZD0865 in isolated rat gastric glands. AJP Gastrointestinal And Liver Physiology 2006, 291: g838-g843. PMID: 16798725, DOI: 10.1152/ajpgi.00120.2006.Peer-Reviewed Original ResearchConceptsGastric acid secretionAcid secretionRat gastric glandsPotassium-competitive acid blockerGastric glandsPeptic ulcer diseaseProton pump inhibitor omeprazoleAcid-related diseasesCompetitive acid blockerPresence of omeprazoleLow-dose inhibitorsFree perfusateUlcer diseasePharmacological treatmentAZD0865High success rateAcid blockerLow doseRapid onsetSensitive dye BCECFInhibitor omeprazoleAcid loadOmeprazoleDye BCECFSecretion
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