2014
Duodenal Absorption and Tissue Utilization of Dietary Heme and Nonheme Iron Differ in Rats
Cao C, Thomas CE, Insogna KL, O'Brien KO. Duodenal Absorption and Tissue Utilization of Dietary Heme and Nonheme Iron Differ in Rats. Journal Of Nutrition 2014, 144: 1710-1717. PMID: 25332470, PMCID: PMC4195416, DOI: 10.3945/jn.114.197939.Peer-Reviewed Original ResearchConceptsNonheme iron absorptionDivalent metal transporter 1Tissue utilizationLiver hepcidinDietary hemeMale Sprague-Dawley ratsDuodenal iron transportersHeme iron absorptionSprague-Dawley ratsHepatic hepcidin expressionIron storage tissuesIron loadingElevated hepcidinIron intakeMetal transporter 1Duodenal absorptionIron dextranNonheme ironIron overloadRat modelHepcidin expressionHepatic hepcidinStable iron isotopesDuodenal expressionHepcidin
2013
Increasing dietary protein acutely augments intestinal iron transporter expression and significantly increases iron absorption in rats
Thomas CE, Gaffney‐Stomberg E, Sun B, O'Brien KO, Kerstetter JE, Insogna KL. Increasing dietary protein acutely augments intestinal iron transporter expression and significantly increases iron absorption in rats. The FASEB Journal 2013, 27: 2476-2483. PMID: 23447582, DOI: 10.1096/fj.12-221945.Peer-Reviewed Original ResearchConceptsIntestinal Fe absorptionDietary proteinFe absorptionIron transporter expressionTranscript expressionDuodenal mucosaAcute effectsSprague-DawleyStable iron isotopesIron absorptionShort-term effectsIsocaloric dietsIron deficiencyTransporter expressionLittle dataTransferrin receptorExpression of genesSeparate studiesGroupCurrent studyBalance studiesExpressionWhole genome profilingDawleyMucosa
2010
The 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
2008
Lrp5 Controls Bone Formation by Inhibiting Serotonin Synthesis in the Duodenum
Yadav VK, Ryu JH, Suda N, Tanaka KF, Gingrich JA, Schütz G, Glorieux FH, Chiang CY, Zajac JD, Insogna KL, Mann JJ, Hen R, Ducy P, Karsenty G. Lrp5 Controls Bone Formation by Inhibiting Serotonin Synthesis in the Duodenum. Cell 2008, 135: 825-837. PMID: 19041748, PMCID: PMC2614332, DOI: 10.1016/j.cell.2008.09.059.Peer-Reviewed Original ResearchConceptsBone massBone formationLrp5-deficient miceSerotonin blood levelsExpression of TPH1High bone massOsteoblast-specific disruptionRate-limiting biosynthetic enzymeBone lossEnterochromaffin cellsBlood levelsSerotonin synthesisPotential therapyBone remodelingWnt coreceptorSerotoninLRP5Function mutationsDuodenumTPH1Independent mannerOsteoporosisTherapyBiosynthetic enzymesMice