2014
Supplementing a Low-Protein Diet with Dibasic Amino Acids Increases Urinary Calcium Excretion in Young Women 1,2
Bihuniak JD, Sullivan RR, Simpson CA, Caseria DM, Huedo-Medina TB, O’Brien K, Kerstetter JE, Insogna KL. Supplementing a Low-Protein Diet with Dibasic Amino Acids Increases Urinary Calcium Excretion in Young Women 1,2. Journal Of Nutrition 2014, 144: 282-288. PMID: 24431325, PMCID: PMC3927545, DOI: 10.3945/jn.113.185009.Peer-Reviewed Original ResearchConceptsIntestinal calcium absorptionLow-protein dietCalcium absorptionDual-stable calcium isotopesYoung womenUrinary calcium excretionDietary proteinControl diet periodAmino acid L-arginineHigh-protein dietAmino acid L-tryptophanCalcium excretionDiet periodClinical trialsSupplementation periodL-arginineDay 5Control dietRandom orderPhysiologic rangeDietTrialsWomenPossible benefitsL-tryptophan
2010
Inhibiting gastric acid production does not affect intestinal calcium absorption in young, healthy individuals: A randomized, crossover, controlled clinical trial
Wright MJ, Sullivan RR, Gaffney‐Stomberg E, Caseria DM, O'Brien KO, Proctor DD, Simpson CA, Kerstetter JE, Insogna KL. Inhibiting gastric acid production does not affect intestinal calcium absorption in young, healthy individuals: A randomized, crossover, controlled clinical trial. Journal Of Bone And Mineral Research 2010, 25: 2205-2211. PMID: 20499372, PMCID: PMC3312746, DOI: 10.1002/jbmr.108.Peer-Reviewed Original ResearchConceptsIntestinal calcium absorptionProton pump inhibitorsCalcium absorptionGastric acidDual-stable calcium isotopesYoung adultsChronic PPI therapyPotent gastric acidGastric acid suppressionNegative calcium balanceGastric acid productionHealthy young adultsPPI esomeprazolePPI therapyPlacebo groupUrinary calciumAcid suppressionCrossover studyBone lossPump inhibitorsClinical trialsIntervention periodAcute effectsCalcium balanceHealthy individualsSix Weeks of a Low Protein Diet Impairs Calcium Homeostasis
Sullivan R, Rosewater I, Caseria D, O'Brien K, Kerstetter J, Insogna K. Six Weeks of a Low Protein Diet Impairs Calcium Homeostasis. The FASEB Journal 2010, 24: lb356-lb356. DOI: 10.1096/fasebj.24.1_supplement.lb356.Peer-Reviewed Original ResearchLow-protein dietProtein dietCalcium absorptionDual-stable calcium isotopesImpairs calcium homeostasisIntestinal calcium absorptionNegative bone balanceWeek 6.5Diet intervention trialLong-term ingestionUrinary calciumMetabolic kitchenBone lossVitamin DIntervention trialsStable calcium isotopesCalcium metabolismBone resorptionBone balanceIntestinal absorptionWeek 1Skeletal turnoverCalcium homeostasisMineral homeostasisYoung women
2004
The Impact of Dietary Protein on Calcium Absorption and Kinetic Measures of Bone Turnover in Women
Kerstetter JE, O’Brien K, Caseria DM, Wall DE, Insogna KL. The Impact of Dietary Protein on Calcium Absorption and Kinetic Measures of Bone Turnover in Women. The Journal Of Clinical Endocrinology & Metabolism 2004, 90: 26-31. PMID: 15546911, DOI: 10.1210/jc.2004-0179.Peer-Reviewed Original ResearchConceptsHigh-protein dietUrinary calciumBone turnoverCalcium absorptionDual-stable calcium isotopesAdditional urinary calciumIntestinal calcium absorptionHealthy womenStable calcium isotopesBone balanceNonsignificant trendSkeletal resorptionCalcium kineticsAcid loadBone originProtein-induced effectsLevels of proteinRandom orderDietary proteinDietHypercalciuriaWomenExperimental dietsSignificant reductionCalcium
1998
Dietary protein affects intestinal calcium absorption 1 , 2 – 3
Kerstetter JE, O'Brien KO, Insogna KL. Dietary protein affects intestinal calcium absorption 1 , 2 – 3. American Journal Of Clinical Nutrition 1998, 68: 859-865. PMID: 9771863, DOI: 10.1093/ajcn/68.4.859.Peer-Reviewed Original ResearchConceptsFractional calcium absorptionLow-protein dietUrinary calcium excretionCalcium absorptionDay 4Calcium excretionSecondary hyperparathyroidismDietary proteinDual-stable calcium isotopesGlomerular filtration rateIntestinal calcium absorptionHigh-protein dietCalcitropic hormonesCalcium metabolismAdditional womenFiltration rateIntestinal absorptionDay 5Young womenRandom orderDietHyperparathyroidismExperimental dietsDietary fiberExcretion