2013
Differential effects of hepcidin on heme and nonheme iron absorption in a rat model of iron overload
Cao C, Thomas C, Insogna K, O'Brien K. Differential effects of hepcidin on heme and nonheme iron absorption in a rat model of iron overload. The FASEB Journal 2013, 27: 634.18-634.18. DOI: 10.1096/fasebj.27.1_supplement.634.18.Peer-Reviewed Original ResearchFe overloadMale Sprague-Dawley ratsWeeks of treatmentFe absorptionBi-weekly injectionsNonheme iron absorptionRed cell incorporationSprague-Dawley ratsLiver hepcidinDawley ratsRat modelRats inhibitsIron overloadRodent modelsIron absorptionAlternate daysRegulatory hormonesHepcidin transcriptsHepcidinFpn degradationRatsCell incorporationGreater associationDifferential effectsPorcine RBCsIncreasing dietary protein selectively upregulates the DMT1 isoform that contains an iron responsive element
Thomas C, Yao G, O'Brien K, Kerstetter J, Insogna K. Increasing dietary protein selectively upregulates the DMT1 isoform that contains an iron responsive element. The FASEB Journal 2013, 27: lb284-lb284. DOI: 10.1096/fasebj.27.1_supplement.lb284.Peer-Reviewed Original ResearchIntestinal iron absorptionIron absorptionDietary proteinProtein dietMRNA expressionWhole-body iron homeostasisDuodenum of ratsDMT1 mRNA expressionBody iron homeostasisGenetic absenceExperimental animalsLevel of expressionResponsive elementBrush border membraneRatsIron-responsive elementRecent dataDietCritical regulatorIron homeostasisBorder membraneSignificant changesExpressionIron importerAnimals
2011
Dietary protein upregulates fractional intestinal iron absorption and directly increases DMT1 transcript and protein expression
Cucchi C, Gaffney‐Stomberg E, Sun B, O'Brien K, Kerstetter J, Insogna K. Dietary protein upregulates fractional intestinal iron absorption and directly increases DMT1 transcript and protein expression. The FASEB Journal 2011, 25: lb193-lb193. DOI: 10.1096/fasebj.25.1_supplement.lb193.Peer-Reviewed Original ResearchProtein dietDietary proteinProtein expressionCaco-2 BBe cellsIntestinal Fe absorptionFe absorption studiesIntestinal iron absorptionTranscript expressionAmino acid-free mediumDMT1 protein levelsAmino acid treatmentDMT1 protein expressionProtein doseIron absorptionBBE cellsIron deficiencyAcid-free mediumRatsProtein levelsDietDMT1 transcriptsAmino acidsFe absorptionWestern analysisKey regulator
2010
A High Protein Diet Induces Intestinal Iron Transporter Expression and Improves Iron Absorption in Rats
Cucchi C, Gaffney‐Stomberg E, Sun B, Kerstetter J, Insogna K. A High Protein Diet Induces Intestinal Iron Transporter Expression and Improves Iron Absorption in Rats. The FASEB Journal 2010, 24: 229.1-229.1. DOI: 10.1096/fasebj.24.1_supplement.229.1.Peer-Reviewed Original ResearchDietary proteinIron absorptionTransporter expressionHigh casein dietExpression of DMT1Iron transporter expressionFe absorptionVs. 5Kruskal-Wallis testMicroarray screenCasein dietMineral homeostasisLevel of expressionProtein dietRatsLittle dataDMT1 expressionQ-PCRDietBalance studiesExpressionHomeostasisGroupDMT1CYBRD1The Effect of Dietary Protein on Intestinal Calcium Absorption in Rats
Gaffney-Stomberg E, Sun BH, Cucchi CE, Simpson CA, Gundberg C, Kerstetter JE, Insogna KL. The Effect of Dietary Protein on Intestinal Calcium Absorption in Rats. Endocrinology 2010, 151: 1071-1078. PMID: 20147526, PMCID: PMC2840679, DOI: 10.1210/en.2009-0744.Peer-Reviewed Original ResearchConceptsIntestinal Ca absorptionCa absorptionHigh-protein dietUrinary calciumBrush border membrane vesiclesProtein intakeFemale Sprague-Dawley ratsProtein dietProtein intake resultsIntestinal calcium absorptionDietary protein intakeHigh protein intakeSprague-Dawley ratsLow-protein groupHigh protein groupDietary protein effectsCalcium absorptionAcute increaseDawley ratsDuodenal mucosaIntake resultsRatsCa balanceTranscellular CaDietary protein
1994
Estrogen modulates parathyroid hormone-induced fibronectin production in human and rat osteoblast-like cells
Eielson C, Kaplan D, Mitnick M, Paliwal I, Insogna K. Estrogen modulates parathyroid hormone-induced fibronectin production in human and rat osteoblast-like cells. Endocrinology 1994, 135: 1639-1644. DOI: 10.1210/en.135.4.1639.Peer-Reviewed Original Research
1990
Treatment of humoral hypercalcemia of malignancy in rats with inhibitors of carbonic anhydrase
Brown G, Morris C, Mitnick M, Insogna K. Treatment of humoral hypercalcemia of malignancy in rats with inhibitors of carbonic anhydrase. Journal Of Bone And Mineral Research 1990, 5: 1037-1041. PMID: 1964358, DOI: 10.1002/jbmr.5650051007.Peer-Reviewed Original ResearchConceptsSerum calciumBone resorptionHumoral hypercalcemiaCarbonic anhydrase inhibitorsNephrogenous cyclic AMP excretionCyclic AMP excretionMean serum calciumOsteoclastic bone resorptionDrug-treated animalsLeydig cell tumorMechanism of actionUrine phosphorusUrine calciumSerum phosphorusCell tumorsAcetazolamide treatmentHypercalcemiaSignificant fallFisher ratsObserved hypercalcemiaResorptionDirect inhibitionSignificant riseMalignancyRats
1988
Renal phosphate transport in humoral hypercalcemia of malignancy
Sartori L, Insogna KL, Barrett PQ. Renal phosphate transport in humoral hypercalcemia of malignancy. American Journal Of Physiology 1988, 255: f1078-f1084. PMID: 2974244, DOI: 10.1152/ajprenal.1988.255.6.f1078.Peer-Reviewed Original ResearchConceptsLeydig cell tumorHumoral hypercalcemiaOnset of hypercalcemiaTumor-bearing animalsPhosphate metabolismRenal phosphate transportCortical brush border membraneParathyroid hormoneDaily injectionsTumor transplantationCell tumorsDichloromethylene diphosphonateMicrovillus membrane vesiclesRenal cortexRenal cortical brush border membraneSodium-dependent phosphate uptakeFisher ratsAnimal modelsPersistent impairmentHypercalcemiaLow-affinity systemBrush border membraneSpecific decreaseMalignancyRatsSynthetic human parathyroid hormone-like protein stimulates bone resorption and causes hypercalcemia in rats.
Stewart AF, Mangin M, Wu T, Goumas D, Insogna KL, Burtis WJ, Broadus AE. Synthetic human parathyroid hormone-like protein stimulates bone resorption and causes hypercalcemia in rats. Journal Of Clinical Investigation 1988, 81: 596-600. PMID: 3339131, PMCID: PMC329608, DOI: 10.1172/jci113358.Peer-Reviewed Original ResearchConceptsBone-resorbing agentsMicrograms/hParathyroid hormone-like proteinFetal rat long bonesAdenylate cyclasePotent bone-resorbing agentHormone-like proteinRat long bonesMembrane adenylate cyclaseSerum calciumHumoral hypercalcemiaOsmotic minipumpsBone resorptionPotent agonistLong bonesSuch synthetic peptidesHypercalcemiaRatsDlVivo bioactivityCyclaseSynthetic peptidesAgentsMinipumpsPatients
1983
Evidence for bidirectional net movement of creatinine in the rat kidney
Namnum P, Insogna K, Baggish D, Hayslett JP. Evidence for bidirectional net movement of creatinine in the rat kidney. American Journal Of Physiology 1983, 244: f719-f723. PMID: 6859263, DOI: 10.1152/ajprenal.1983.244.6.f719.Peer-Reviewed Original ResearchConceptsGlomerular filtration rateCreatinine levelsConscious ratsPlasma creatinineFiltration ratePlasma creatinine levelsElevated plasma creatinineInulin clearance ratioIntravenous infusionEndogenous creatinineCreatinineAnesthetized animalsRenal tubulesNet secretionReliable markerRat kidneyRatsMetabolic studiesClearance ratioTest substancesCreatinine transportInfusion