2015
Conventional Therapy in Adults With X-Linked Hypophosphatemia: Effects on Enthesopathy and Dental Disease
Connor J, Olear EA, Insogna KL, Katz L, Baker S, Kaur R, Simpson CA, Sterpka J, Dubrow R, Zhang JH, Carpenter TO. Conventional Therapy in Adults With X-Linked Hypophosphatemia: Effects on Enthesopathy and Dental Disease. The Journal Of Clinical Endocrinology & Metabolism 2015, 100: 3625-3632. PMID: 26176801, PMCID: PMC4596038, DOI: 10.1210/jc.2015-2199.Peer-Reviewed Original ResearchConceptsSevere dental diseaseHospital research unitDental diseaseDisease severityXLH patientsMajor long-term morbidityActive vitamin D metaboliteAdult XLH patientsLong-term morbidityVitamin D metabolitesAdult lifeMultiple logistic regressionRadiographic skeletal surveySignificant predictorsProportion of adultsConventional therapyD metabolitesSkeletal surveyLower riskExposure variablesLogistic regressionDiseaseEnthesopathySkeletal deformitiesTreatment variables
2013
Heart Failure in Hypophosphatemic Rickets: Complications from High-Dose Phosphate Therapy
Sun GE, Suer O, Carpenter TO, Tan CD, Li-Ng M. Heart Failure in Hypophosphatemic Rickets: Complications from High-Dose Phosphate Therapy. Endocrine Practice 2013, 19: e8-e11. PMID: 23186962, DOI: 10.4158/ep12184.cr.Peer-Reviewed Original ResearchConceptsYears of ageHypophosphatemic ricketsPhosphate therapyTertiary hyperparathyroidismHeart failureCardiac calcificationSevere calcific coronary artery diseaseCalcific coronary artery diseaseAortic valve replacementCoronary artery calcificationCongestive heart failureCoronary artery diseaseManagement of patientsHeart valve calcificationImplantable cardioverter defibrillatorPathophysiology of calcificationCalcitriol useCardiac complicationsArtery calcificationRenal failureValve replacementArtery diseaseClinical courseAppropriate therapyHeart block
2012
Take Another CYP: Confirming a Novel Mechanism for “Idiopathic” Hypercalcemia
Carpenter TO. Take Another CYP: Confirming a Novel Mechanism for “Idiopathic” Hypercalcemia. The Journal Of Clinical Endocrinology & Metabolism 2012, 97: 768-771. PMID: 22392954, PMCID: PMC3319214, DOI: 10.1210/jc.2012-1110.Peer-Reviewed Original Research
2010
Circulating Levels of Soluble Klotho and FGF23 in X-Linked Hypophosphatemia: Circadian Variance, Effects of Treatment, and Relationship to Parathyroid Status
Carpenter TO, Insogna KL, Zhang JH, Ellis B, Nieman S, Simpson C, Olear E, Gundberg CM. Circulating Levels of Soluble Klotho and FGF23 in X-Linked Hypophosphatemia: Circadian Variance, Effects of Treatment, and Relationship to Parathyroid Status. The Journal Of Clinical Endocrinology & Metabolism 2010, 95: e352-e357. PMID: 20685863, PMCID: PMC2968736, DOI: 10.1210/jc.2010-0589.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAge FactorsAgedBone Density Conservation AgentsCalcitriolChildCircadian RhythmEnzyme-Linked Immunosorbent AssayFamilial Hypophosphatemic RicketsFemaleFibroblast Growth Factor-23Fibroblast Growth FactorsGenetic Diseases, X-LinkedGlucuronidaseHumansKlotho ProteinsMaleMiddle AgedParathyroid HormonePhosphatesVitamin DConceptsSerum KlothoSerum FGF23Higher klotho levelsHospital research unitRenal phosphate handlingAcademic medical centerEffect of treatmentFibroblast growth factorKlotho levelsPTH secretionMedical therapySoluble KlothoDihydroxyvitamin DFGF23 regulationPhosphate handlingMedical CenterFGF23KlothoXLHCircadian variationGrowth factorPTHAdultsHypophosphatemiaTherapyTreatment of X-Linked Hypophosphatemia with Calcitriol and Phosphate Increases Circulating Fibroblast Growth Factor 23 Concentrations
Imel EA, DiMeglio LA, Hui SL, Carpenter TO, Econs MJ. Treatment of X-Linked Hypophosphatemia with Calcitriol and Phosphate Increases Circulating Fibroblast Growth Factor 23 Concentrations. The Journal Of Clinical Endocrinology & Metabolism 2010, 95: 1846-1850. PMID: 20157195, PMCID: PMC2853995, DOI: 10.1210/jc.2009-1671.Peer-Reviewed Original ResearchConceptsFGF23 concentrationsXLH patientsFibroblast growth factor 23 concentrationsGrowth factor 23 concentrationsFibroblast Growth Factor 23 ExpressionComplications of therapyDihydroxyvitamin D concentrationsProspective observational studyTertiary referral centerIntact FGF23 concentrationsRoutine clinical managementOral calcitriolReferral centerClinical managementFGF23 elevationObservational studyTherapeutic effectRenal phosphateCalcitriolD concentrationsDisease severityNormal serumVivo modelTherapyMost subjects
2001
Ectopic cardiac calcification associated with hyperparathyroidism in a boy with hypophosphatemic rickets
Moltz K, Friedman A, Nehgme R, Kleinman C, Carpenter T. Ectopic cardiac calcification associated with hyperparathyroidism in a boy with hypophosphatemic rickets. Current Opinion In Pediatrics 2001, 13: 373-375. PMID: 11717565, DOI: 10.1097/00008480-200108000-00015.Peer-Reviewed Original Research
1998
Osteocalcin production in primary osteoblast cultures derived from normal and Hyp mice.
Carpenter T, Moltz K, Ellis B, Andreoli M, McCarthy T, Centrella M, Bryan D, Gundberg C. Osteocalcin production in primary osteoblast cultures derived from normal and Hyp mice. Endocrinology 1998, 139: 35-43. PMID: 9421395, DOI: 10.1210/endo.139.1.5677.Peer-Reviewed Original ResearchConceptsPrimary osteoblast culturesOsteoblast culturesRegulation of osteocalcinMessenger RNAMurine osteoblastsOsteocalcin productionOsteocalcin messenger RNASpecies-specific effectsPrimary murine osteoblastsMaturation-dependent fashionHyp mouse modelHyp miceMutant strainOsteoblast differentiationMurine cellsCultured cellsHYP culturesMurine culturesOsteoblastsRNACell viabilityPrimary culturesRegulationAltered responseNormal litter mates
1995
Media Calcium Attenuates Mitochondrial 1,25(OH)2D Production in Phosphorus or Vitamin D-Deprived Rats
Carpenter T, Ellis B. Media Calcium Attenuates Mitochondrial 1,25(OH)2D Production in Phosphorus or Vitamin D-Deprived Rats. Pediatric Research 1995, 37: 726-730. PMID: 7544454, DOI: 10.1203/00006450-199506000-00009.Peer-Reviewed Original ResearchConceptsVitamin D deprivationLow phosphorus dietVitamin DPhosphorus dietPrimary physiologic regulatorCalcium effectDeficient dietLong-term exposureCalcium modulatesMedium calciumPhysiologic regulatorRatsControl dietMarked inhibitionEffect of calciumStimulatory responseRenal mitochondriaExtramitochondrial calciumDietWkBasal activityPTHTerm exposureCalciumDeprivation
1990
Vitamin D metabolism in chronic childhood hypoparathyroidism: Evidence for a direct regulatory effect of calcium
Carpenter T, Insogna K, Boulware S, Mitnick M. Vitamin D metabolism in chronic childhood hypoparathyroidism: Evidence for a direct regulatory effect of calcium. The Journal Of Pediatrics 1990, 116: 252-257. PMID: 2299496, DOI: 10.1016/s0022-3476(05)82883-5.Peer-Reviewed Original Research