2015
Prolonged Correction of Serum Phosphorus in Adults With X-Linked Hypophosphatemia Using Monthly Doses of KRN23
Imel EA, Zhang X, Ruppe MD, Weber TJ, Klausner MA, Ito T, Vergeire M, Humphrey JS, Glorieux FH, Portale AA, Insogna K, Peacock M, Carpenter TO. Prolonged Correction of Serum Phosphorus in Adults With X-Linked Hypophosphatemia Using Monthly Doses of KRN23. The Journal Of Clinical Endocrinology & Metabolism 2015, 100: 2565-2573. PMID: 25919461, PMCID: PMC4495171, DOI: 10.1210/jc.2015-1551.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedDose-Response Relationship, DrugDrug Administration ScheduleFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsGlomerular Filtration RateHumansImmunoglobulin GMaleMiddle AgedPhosphorusRecombinant ProteinsTreatment OutcomeYoung AdultConceptsTmP/GFRSerum PiNormal rangeOpen-label phase 1/2 studyElevated fibroblast growth factor 23Fibroblast growth factor 23Phase 1/2 studyDose-escalation studyGlomerular filtration ratePre-dose levelsGrowth factor 23Favorable safety profileMain outcome measuresProportion of subjectsAcademic medical centerPeak PiSerum inorganic phosphorusPg/mLUrinary calciumDose escalationFactor 23Monthly dosesSerum phosphorusDihydroxyvitamin DSafety profile
2014
Effect of Paricalcitol on Circulating Parathyroid Hormone in X-Linked Hypophosphatemia: A Randomized, Double-Blind, Placebo-Controlled Study
Carpenter TO, Olear EA, Zhang JH, Ellis BK, Simpson CA, Cheng D, Gundberg CM, Insogna KL. Effect of Paricalcitol on Circulating Parathyroid Hormone in X-Linked Hypophosphatemia: A Randomized, Double-Blind, Placebo-Controlled Study. The Journal Of Clinical Endocrinology & Metabolism 2014, 99: 3103-3111. PMID: 25029424, PMCID: PMC4154090, DOI: 10.1210/jc.2014-2017.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAlkaline PhosphataseBone Density Conservation AgentsChildDouble-Blind MethodErgocalciferolsFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsHumansHyperparathyroidismMaleMiddle AgedParathyroid HormonePhosphorusPlacebosProspective StudiesTreatment OutcomeVitamin DYoung AdultConceptsRenal phosphate thresholdGlomerular filtration rateBone scanSerum phosphorusFiltration rateXLH patientsEffect of paricalcitolUse of paricalcitolPlacebo-treated subjectsElevated PTH levelsSerum calcium levelsSuppression of PTHHospital research unitSerum alkaline phosphatase activityPTH levelsCreatinine levelsSecondary outcomesStandard therapyUrinary calciumPlacebo subjectsParathyroid hormoneSerum calciumAlkaline phosphatase activityD levelsSkeletal improvement
2013
Dietary Protein-Induced Increases in Urinary Calcium Are Accompanied by Similar Increases in Urinary Nitrogen and Urinary Urea: A Controlled Clinical Trial
Bihuniak JD, Simpson CA, Sullivan RR, Caseria DM, Kerstetter JE, Insogna KL. Dietary Protein-Induced Increases in Urinary Calcium Are Accompanied by Similar Increases in Urinary Nitrogen and Urinary Urea: A Controlled Clinical Trial. Journal Of The Academy Of Nutrition And Dietetics 2013, 113: 447-451. PMID: 23438496, PMCID: PMC5868414, DOI: 10.1016/j.jand.2012.11.002.Peer-Reviewed Original ResearchConceptsBone turnover markersDietary protein intakeUrinary creatinineUrinary calciumProtein intakeUrinary ureaTurnover markersUrinary nitrogenNutrition intervention trialMaltodextrin controlPostmenopausal womenIntervention trialsClinical trialsUrinary metabolitesCreatinineDay 0Whey supplementationWhey supplementsIntakeSample t-testSimilar increaseTrialsT-testSupplementationMarkers
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 womenThe 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
2007
Dietary protein increases intestinal calcium absorption and improves bone balance: An hypothesis
Kerstetter J, Gaffney E, O'Brien K, Caseria D, Insogna K. Dietary protein increases intestinal calcium absorption and improves bone balance: An hypothesis. International Congress Series 2007, 1297: 204-216. DOI: 10.1016/j.ics.2006.08.027.Peer-Reviewed Original ResearchBone mineral densityIntestinal calcium absorptionHigh-protein dietUrinary calciumBone lossCalcium absorptionProtein dietAccelerated bone lossMost cross-sectional studiesDietary proteinCross-sectional studyLow-protein dietBone turnoverBone resorptionMineral densityBone balanceCalcium studiesCalcium retentionSalutary effectsBone originPrincipal outcomeDietSignificant reductionCalciumResorption
2006
Meat and Soy Protein Affect Calcium Homeostasis in Healthy Women 1 , 2
Kerstetter JE, Wall DE, O’Brien K, Caseria DM, Insogna KL. Meat and Soy Protein Affect Calcium Homeostasis in Healthy Women 1 , 2. Journal Of Nutrition 2006, 136: 1890-1895. PMID: 16772455, DOI: 10.1093/jn/136.7.1890.Peer-Reviewed Original ResearchConceptsIntestinal calcium absorptionUrinary calciumCalcium absorptionLow-protein dietHealthy womenCalcium homeostasisHigher protein interventionNet acid excretionSubset of subjectsHigh-protein dietSoy interventionParathyroid hormoneExperimental periodSerum concentrationsAcid excretionSoy dietAcute declineWomen 1Calcium bioavailabilityRandom orderDietary proteinMeat dietDietSoy proteinIntervention
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 reductionCalciumHigh Protein Diets, Calcium Economy, and Bone Health
Kerstetter J, O'Brien K, Insogna K. High Protein Diets, Calcium Economy, and Bone Health. Topics In Clinical Nutrition 2004, 19: 57-70. DOI: 10.1097/00008486-200401000-00010.Peer-Reviewed Original ResearchHigh-protein dietProtein dietDecrease bone densityUrinary calcium excretionDietary proteinHigh dietary proteinCalcium excretionUrinary calciumBone healthSkeletal healthCalcium economyBone resorptionBone densityLong-term consequencesDietBoneSignificant scientific dataPhysiological mechanismsHealthHumansExcretionResorptionProtein
2003
Dietary protein, calcium metabolism, and skeletal homeostasis revisited
Kerstetter JE, O'Brien KO, Insogna KL. Dietary protein, calcium metabolism, and skeletal homeostasis revisited. American Journal Of Clinical Nutrition 2003, 78: s584-s592. PMID: 12936953, DOI: 10.1093/ajcn/78.3.584s.BooksConceptsIntestinal calcium absorptionDietary protein intakeCalcium absorptionProtein intakeDietary proteinBone resorptionHigher dietary protein intakeSerum parathyroid hormoneUrinary calcium excretionCalcium balance studiesReduced bone densityRecent epidemiologic studiesLow protein intakeDiet-induced changesLow-protein dietCalcium excretionSecondary hyperparathyroidismCalcium intakeUrinary calciumParathyroid hormoneBone lossSkeletal healthCalcium metabolismDietary trialMineral metabolismLow Protein Intake: The Impact on Calcium and Bone Homeostasis in Humans
Kerstetter JE, O'Brien KO, Insogna KL. Low Protein Intake: The Impact on Calcium and Bone Homeostasis in Humans. Journal Of Nutrition 2003, 133: 855s-861s. PMID: 12612169, DOI: 10.1093/jn/133.3.855s.BooksConceptsIntestinal calcium absorptionLow-protein dietCalcium absorptionHigh-protein dietProtein dietSecondary hyperparathyroidismUrinary calciumBone resorptionDietary proteinAdditional urinary calciumDietary protein resultsSerum parathyroid hormoneNutrition intervention trialCalcium balance studiesRecent epidemiological studiesLow protein intakeNutrition intervention studiesParathyroid hormoneBone lossSkeletal healthIntervention trialsCalcium metabolismSkeletal fracturesBone densityLong-term consequences
2000
A threshold for low-protein-diet–induced elevations in parathyroid hormone 1 , 2 , 3
Kerstetter J, Svastisalee C, Caseria D, Mitnick M, Insogna K. A threshold for low-protein-diet–induced elevations in parathyroid hormone 1 , 2 , 3. American Journal Of Clinical Nutrition 2000, 72: 168-173. PMID: 10871576, DOI: 10.1093/ajcn/72.1.168.Peer-Reviewed Original ResearchConceptsYoung healthy womenParathyroid hormoneHealthy womenCalcium homeostasisDay 4Nephrogenous cyclic adenosine monophosphateDiet-induced elevationIntestinal calcium absorptionBody mass indexDietary proteinDietary protein intakeParathyroid hormone 1Protein/Urinary calciumCalcitropic hormonesMass indexCalcium absorptionPerturb calcium homeostasisMean 24Normal rangeAverage ageProtein intakeDietary allowanceCyclic adenosine monophosphateHormone 1
1999
Changes in Bone Turnover in Young Women Consuming Different Levels of Dietary Protein1
Kerstetter J, Mitnick M, Gundberg C, Caseria D, Ellison A, Carpenter T, Insogna K. Changes in Bone Turnover in Young Women Consuming Different Levels of Dietary Protein1. The Journal Of Clinical Endocrinology & Metabolism 1999, 84: 1052-1055. PMID: 10084594, DOI: 10.1210/jcem.84.3.5552.Peer-Reviewed Original ResearchUrinary N-telopeptide excretionBone-specific alkaline phosphataseN-telopeptide excretionUrinary calcium excretionBone turnoverLow-protein dietCalcium excretionUrinary calciumProtein dietBone resorptionDietary proteinYoung womenHealthy young womenNegative calcium balanceLow protein intakeHigh-protein dietAlkaline phosphataseSecondary hyperparathyroidismSerum PTHSerum osteocalcinDihydroxyvitamin DCalcium balanceProtein intakeCompensatory increaseDay 4
1997
Increased circulating concentrations of parathyroid hormone in healthy, young women consuming a protein-restricted diet
Kerstetter J, Caseria D, Mitnick M, Ellison A, Gay L, Liskov T, Carpenter T, Insogna K. Increased circulating concentrations of parathyroid hormone in healthy, young women consuming a protein-restricted diet. American Journal Of Clinical Nutrition 1997, 66: 1188-1196. PMID: 9356538, DOI: 10.1093/ajcn/66.5.1188.Peer-Reviewed Original ResearchConceptsLow-protein dietHigh-protein dietSerum PTHDietary proteinMedium protein dietCyclic adenosine monophosphateDay 4Nephrogenous cyclic adenosine monophosphateYoung womenIntestinal calcium absorptionNegative calcium balanceProtein-restricted dietSerum calcitriolUrinary calciumCalcitropic hormonesHealthy womenParathyroid hormoneBone turnSkeletal healthPTH bioactivityCalcium absorptionCalcium metabolismProtein restrictionRenal mechanismsMineral metabolism
1989
Trichlormethiazide and Oral Phosphate Therapy in Patients with Absorptive Hypercalciuria
Insogna K, Ellison A, Burtis W, Sartori L, Lang R, Broadus A. Trichlormethiazide and Oral Phosphate Therapy in Patients with Absorptive Hypercalciuria. Journal Of Urology 1989, 141: 269-273. PMID: 2913343, DOI: 10.1016/s0022-5347(17)40737-3.Peer-Reviewed Original ResearchConceptsOral phosphate therapyDihydroxyvitamin D levelsAbsorptive hypercalciuriaUrinary calciumParathyroid functionPhosphate therapyPhosphate administrationD levelsOral phosphate administrationRenal phosphate thresholdTreatment urinary calciumStudy 36 patientsPre-treatment valuesTrichlormethiazide treatmentCalcium excretionDihydroxyvitamin DBiochemical abnormalitiesSecond drugPharmacological meansStudy subjectsHypercalciuriaPatientsTherapyPer cent decreaseTreatment
1982
Influence of pregnancy on immunoreactive parathyroid hormone levels
Gillette M, Insogna K, Lewis A, Baran D. Influence of pregnancy on immunoreactive parathyroid hormone levels. Calcified Tissue International 1982, 34: 9-12. PMID: 6279256, DOI: 10.1007/bf02411200.Peer-Reviewed Original ResearchConceptsImmunoreactive PTHTubular maximum phosphate reabsorptionImmunoreactive parathyroid hormone levelsAge-matched female controlsHealthy pregnant patientsNephrogenous cAMP excretionParathyroid hormone metabolismHealthy age-matched female controlsParathyroid hormone levelsInfluence of pregnancySignificant increaseBiological effectsIPTH levelsPregnant patientsCreatinine clearanceUrinary calciumCreatinine ratioPTH metabolismSerum calciumSerum phosphorusThird trimesterVitamin DBlood levelsBone resorptionPhosphate reabsorption
1981
Effect of Age on Serum Immunoreactive Parathyroid Hormone and Its Biological Effects*
INSOGNA K, LEWIS A, LIPINSKI B, BRYANT C, BARAN D. Effect of Age on Serum Immunoreactive Parathyroid Hormone and Its Biological Effects*. The Journal Of Clinical Endocrinology & Metabolism 1981, 53: 1072-1075. PMID: 6270181, DOI: 10.1210/jcem-53-5-1072.Peer-Reviewed Original ResearchConceptsIPTH levelsElderly subjectsTubular maximum phosphate reabsorptionImmunoreactive parathyroid hormone levelsSerum immunoreactive parathyroid hormoneImmunoreactive parathyroid hormoneParathyroid hormone levelsBiological effectsCreatinine clearanceEffect of ageNephrogenous cAMPUrinary calciumCreatinine ratioSerum phosphateParathyroid hormoneBone lossCalcium ingestionBone resorptionPhosphate reabsorptionHormone levelsHealthy volunteersSignificant negative correlationSignificant positive correlationIPTHOlder volunteers