2021
Lack of GNAS Remethylation During Oogenesis May Be a Cause of Sporadic Pseudohypoparathyroidism Type Ib
Milioto A, Reyes M, Hanna P, Kiuchi Z, Turan S, Zeve D, Agarwal C, Grigelioniene G, Chen A, Mericq V, Frangos M, Ten S, Mantovani G, Salusky I, Tebben P, Jüppner H. Lack of GNAS Remethylation During Oogenesis May Be a Cause of Sporadic Pseudohypoparathyroidism Type Ib. The Journal Of Clinical Endocrinology & Metabolism 2021, 107: e1610-e1619. PMID: 34791361, PMCID: PMC8947795, DOI: 10.1210/clinem/dgab830.Peer-Reviewed Original ResearchMeSH KeywordsChromograninsDNA MethylationGTP-Binding Protein alpha Subunits, GsHumansMaleOogenesisPseudohypoparathyroidismRetrospective StudiesConceptsIntracytoplasmic sperm injectionGNAS differentially methylated regionsIn vitro fertilizationLoss of methylationPHP1B patientsGNAS methylationPseudohypoparathyroidism type Ib (PHP1BMaternal GNAS methylation imprintsDifferentially methylated regionsStimulatory G protein alpha-subunitAutosomal dominant PHP1BParathyroid hormone resistancePseudohypoparathyroidism type IbProximal renal tubulesAbnormal GNAS methylationImpaired oocyte maturationOocyte-expressed genesGain of methylationSporadic PHP1BHormone resistanceSperm injectionPHP1BMale factorImprinting defectsGenetic defectsProgression of PTH Resistance in Autosomal Dominant Pseudohypoparathyroidism Type Ib Due to Maternal STX16 Deletions
Kiuchi Z, Reyes M, Hanna P, Sharma A, DeClue T, Olney R, Tebben P, Jüppner H. Progression of PTH Resistance in Autosomal Dominant Pseudohypoparathyroidism Type Ib Due to Maternal STX16 Deletions. The Journal Of Clinical Endocrinology & Metabolism 2021, 107: e681-e687. PMID: 34477200, PMCID: PMC8899049, DOI: 10.1210/clinem/dgab660.Peer-Reviewed Original ResearchConceptsAutosomal dominant pseudohypoparathyroidism type IbSTX16 deletionPseudohypoparathyroidism type IbParathyroid hormoneYears of ageAD-PHP1BDisease-causing variantsFemale carriersMeasurement of parathyroid hormoneGNAS exon A/BPretreatment laboratory resultsElevated PTH levelsParathyroid hormone resistanceParathyroid hormone levelsSerum calcium levelsThyrotropin (TSHType IbExon A/BOvert hypocalcemiaPTH resistancePTH levelsTSH levelsCalcium abnormalitiesPrompt treatmentLoss of methylation
2013
Spinal cord compression in pseudohypoparathyroidism
Roberts T, Khasnavis S, Papaliodis D, Citone I, Carl A. Spinal cord compression in pseudohypoparathyroidism. The Spine Journal 2013, 13: e15-e19. PMID: 24060230, DOI: 10.1016/j.spinee.2013.06.107.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentDecompression, SurgicalHumansMalePseudohypoparathyroidismSpinal Cord CompressionSpinal FusionSpinal StenosisConceptsSpinal cord compressionSpinal stenosisCord compressionCase reportSurgical decompressionNeurologic dysfunctionNeurologic functionBed-bound stateCongenital spinal stenosisFunctional upper extremityUnderlying metabolic syndromeLower extremity weaknessBilateral lower extremitiesReports of patientsLower extremity functionRelevant case reportsPatient's neurologic functionPHP type IaIatrogenic paraplegiaSymptomatic stenosisExtremity weaknessYounger patientsInstrumented fusionMetabolic syndromePediatric patients
2010
Acute Down-regulation of Sodium-dependent Phosphate Transporter NPT2a Involves Predominantly the cAMP/PKA Pathway as Revealed by Signaling-selective Parathyroid Hormone Analogs
Nagai S, Okazaki M, Segawa H, Bergwitz C, Dean T, Potts JT, Mahon MJ, Gardella TJ, Jüppner H. Acute Down-regulation of Sodium-dependent Phosphate Transporter NPT2a Involves Predominantly the cAMP/PKA Pathway as Revealed by Signaling-selective Parathyroid Hormone Analogs. Journal Of Biological Chemistry 2010, 286: 1618-1626. PMID: 21047792, PMCID: PMC3020770, DOI: 10.1074/jbc.m110.198416.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCattleChlorocebus aethiopsCOS CellsCyclic AMPCyclic AMP-Dependent Protein KinasesDown-RegulationHumansIn Vitro TechniquesKidney Tubules, ProximalMaleMiceMice, Inbred C57BLOpossumsOsteoblastsParathyroid HormonePhosphorusPseudohypoparathyroidismRatsSignal TransductionSodiumSodium-Phosphate Cotransporter Proteins, Type IIaConceptsAcute down-regulationNpt2a expressionParathyroid hormoneRenal proximal tubule cellsParathyroid hormone (PTH)/PTH-related peptideCAMP/PKALong-acting PTH analogPTH analogsWild-type miceRenal proximal tubulesIntracellular calcium responsesParathyroid hormone analogProximal tubule cellsOpossum kidney cellsM-PTH(1Prolonged cAMP responsesParathyroid hormone analoguesCAMP/PKA signaling pathwayPTH-dependent regulationRenal brush border membraneClonal cell linesInducing IP(3Pseudohypoparathyroid patientsMembrane expressionCalcium response
1995
Pseudohypoparathyroidism type Ib is not caused by mutations in the coding exons of the human parathyroid hormone (PTH)/PTH-related peptide receptor gene
Schipani E, Weinstein LS, Bergwitz C, Iida-Klein A, Kong XF, Stuhrmann M, Kruse K, Whyte MP, Murray T, Schmidtke J. Pseudohypoparathyroidism type Ib is not caused by mutations in the coding exons of the human parathyroid hormone (PTH)/PTH-related peptide receptor gene. The Journal Of Clinical Endocrinology & Metabolism 1995, 80: 1611-1621. PMID: 7745008, DOI: 10.1210/jcem.80.5.7745008.Peer-Reviewed Original ResearchConceptsPseudohypoparathyroidism type IbPHP-IbCoding exonsExon GNucleotide sequenceBase changesHuman genomic DNA clonesExon E2Receptor geneTemperature gradient gel electrophoresisGenomic DNA clonesRestriction enzyme mappingReceptor cytoplasmic tailPHP-Ib patientsPTH/PTH-related peptideReverse transcriptase-polymerase chain reactionSplice donor sitePTH/PTHrP receptor geneTranscriptase-polymerase chain reactionGradient gel electrophoresisType IbChain reactionDirect nucleotide sequencingWild-type receptorNorthern blot analysis
1985
New applications of total parathyroidectomy and autotransplantation: Use in proximal renal tubular dysfunction
Kinder B, Rasmussen H. New applications of total parathyroidectomy and autotransplantation: Use in proximal renal tubular dysfunction. World Journal Of Surgery 1985, 9: 156-164. PMID: 3838609, DOI: 10.1007/bf01656271.Peer-Reviewed Original ResearchConceptsTotal parathyroidectomyMetabolic bone diseaseBone diseaseProximal renal tubular dysfunctionGraft-dependent hypercalcemiaSevere bone diseaseVitamin D intoxicationTreatment of hyperparathyroidismCases of recurrentRenal tubular dysfunctionNew clinical settingsParathyroid massPersistent hyperparathyroidismRecurrent diseaseSecondary hyperparathyroidismPolyendocrine syndromeRenal osteodystrophySubtotal resectionFurther recurrenceParathyroid hyperplasiaTubular dysfunctionLocal anesthesiaEffective treatmentGraft tissueHigh incidence
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