Search results for " Calcium-Sensing"

showing 6 items of 6 documents

The role of extracellular calcium in bone metastasis

2016

AbstractThis review summarizes the role of extracellular calcium, as found present in the bone tissue, in the process of bone metastasis.

0301 basic medicinelcsh:Diseases of the musculoskeletal systemIGF insulin-like growth factorPGE-2 prostaglandin E-2Bone tissueFibroblast growth factorM-CSF macrophage colony-stimulating factorPDGF platelet-derived growth factorBone remodelingSK3 small conductance calcium-activated potassium channel 30302 clinical medicineERK extracellular signal-regulated kinaseTGFβ transforming growth factor betaBMP's bone morphogenetic proteinsbiologyAKT AKT8 virus oncogene cellular homologBone metastasislcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogenshumanitiescAMP cyclic adenosine monophosphatemedicine.anatomical_structureOncologyRANKL030220 oncology & carcinogenesisIon channelsCaSR calcium-sensing receptorPTHrP parathyroid hormone-related proteinPlatelet-derived growth factor receptorResearch PaperTRP transient receptor potentialmedicine.medical_specialtychemistry.chemical_elementCalciumRANKL receptor activator of NF-κB ligandlcsh:RC254-28203 medical and health sciencesPLC phospholipase CInternal medicinemedicineExtracellularCaSRET-1 endothelin-1PTEN phosphatase and tensin homolog deleted on chromosome 10business.industryBone metastasismedicine.diseaseFGF fibroblast growth factor030104 developmental biologyEndocrinologyPSA prostate specific antigenchemistryCOPD chronic obstructive pulmonary diseasebiology.proteinCancer researchJNK jun N-terminal kinasePKA protein kinase ARANK receptor activator of NF-κBCalciumlcsh:RC925-935businessMAPK mitogen-activated protein kinaseJournal of Bone Oncology
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Autoantibodies against the calcium-sensing receptor and cytokines in autoimmune polyglandular syndromes types 2, 3 and 4

2017

OBJECTIVE: The frequency of autoimmunity against the parathyroid glands in patients with polyglandular autoimmunity that is not due to autoimmune polyendocrine syndrome type 1 (APS1) is unclear. To investigate this, the current study aimed to determine the prevalence of autoantibodies against parathyroid autoantigens the calcium-sensing receptor (CaSR) and NACHT leucine-rich-repeat protein 5 (NALP5) in a large group of patients with non-APS1 polyendocrine autoimmunity. Possible occult APS1 was investigated by cytokine autoantibody measurement and AIRE gene analysis. DESIGN, SUBJECTS, AND MEASUREMENTS: Subjects were 178 patients with APS2, 3 or 4, and 80 healthy blood donors. Autoantibodies …

AdultMale0301 basic medicinemedicine.medical_specialtyEndocrinology Diabetes and Metabolismmedicine.medical_treatmentAutoimmunity030209 endocrinology & metabolismmedicine.disease_causeAutoantigensAutoimmunityMitochondrial ProteinsParathyroid Glands03 medical and health sciences0302 clinical medicineEndocrinologyInternal medicinemedicineHumansPolyendocrinopathies AutoimmuneReceptorAgedAutoantibodiesSubclinical infectionbusiness.industryAutoantibodyNuclear ProteinsMiddle Agedmedicine.diseaseAnti-thyroid autoantibodies030104 developmental biologyEndocrinologyCytokineAutoimmune polyendocrine syndrome type 1Case-Control StudiesImmunologyCytokinesFemaleCalcium-sensing receptorbusinessReceptors Calcium-SensingClinical Endocrinology
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Increased Gastrin and Calcitonin Secretion after Oral Calcium or Peptones Administration in Patients with Hypercalciuria: A Clue to an Alteration in …

2005

The calcium-sensing receptor (CaSR) has been detected in human antral gastrin-secreting cells, where, upon calcium and/or amino acid allosteric activation, it stimulates gastrin secretion. Patients with absorptive hypercalciuria (AH) display an enhanced gastric acid output; therefore, we evaluated the secretion of gastrin in subjects with AH ( 30 subjects vs. 30 healthy female controls, all postmenopausal) after oral calcium administration ( 1 g calcium gluconate) and, on a separate occasion, after peptone loading test ( protein hydrolyzed, 10 g). Gastrin and monomeric calcitonin responses were higher in AH after both oral calcium administration ( P < 0.01) and peptone loading ( P< 0.01). B…

Calcitoninmedicine.medical_specialtyEndocrinology Diabetes and MetabolismClinical BiochemistryThyroid GlandAdministration Oralchemistry.chemical_element.CalciumBiochemistryKidney CalculiEndocrinologyOral administrationCalcium Metabolism DisordersInternal medicineGastrinsmedicineHumansGastrin-Secreting CellsHypercalciuriaAgedGastrinBiochemistry (medical)Middle AgedCalcitonin secretionmedicine.diseaseCalcium GluconateEndocrinologychemistryGastrointestinal hormoneParathyroid HormoneCalcitoninPeptonesFemaleCalcium-sensing receptorReceptors Calcium-Sensinghormones hormone substitutes and hormone antagonistsThe Journal of Clinical Endocrinology &amp; Metabolism
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Identification of calcium sensing receptor (CaSR) mRNA-expressing cells in normal and injured rat brain

2009

Calcium sensing receptor (CaSR), isolated for the first time from bovine and human parathyroid, is a G-protein-coupled receptors that has been involved in diverse physiological functions. At present a complete in vivo work on the identification of CaSR mRNA-expressing cells in the adult brain lacks and this investigation was undertaken in order to acquire more information on cell type expressing CaSR mRNA in the rat brain and to analyse for the first time its expression in different experimental models of brain injury. The expression of CaSR mRNAs was found mainly in scattered cells throughout almost all the brain regions. A double labeling analysis showed a colocalization of CaSR mRNA expr…

Malemedicine.medical_specialtyTime FactorsCentral nervous systemHippocampusCell CountSettore BIO/11 - Biologia MolecolareBiologySettore BIO/09 - Fisiologiachemistry.chemical_compoundSeizuresInternal medicineSettore BIO/10 - BiochimicaCaSRmedicineAnimalsRNA MessengerRats WistarIbotenic AcidMolecular BiologyIn Situ HybridizationNeuronsKainic AcidGeneral NeuroscienceDentate gyrusBrainColocalizationImmunohistochemistryRatsOligodendrogliamedicine.anatomical_structureEndocrinologynervous systemchemistryBrain InjuriesNeurogliaNeurology (clinical)Pyramidal cellCaSR; BrainCalcium sensing receptor (CaSR) isolated for the first time from bovine and human parathyroid is a G-protein-coupled receptors that has been involved in diverse physiological functions. At present a complete in vivo work on the identification of CaSR mRNA-expressing cells in the adult brain lacks and this investigation was undertaken in order to acquire more information on cell type expressing CaSR mRNA in the rat brain and to analyse for the first time its expression in different experimental models of brain injury. The expression of CaSR mRNAs was found mainly in scattered cells throughout almost all the brain regions. A double labeling analysis showed a colocalization of CaSR mRNA expression in neurons and oligodendrocytes whereas it was not found expressed both in the microglia and in astrocytes. One week after kainate-induced seizure CaSR was found in the injured CA3 region of the hippocampus and very interestingly it was found up-regulated in the neurons of CA1-CA2 and dentate gyrus. Similarly 1 week following ibotenic acid injection in the hippocampus CaSR mRNA expression was increased in oligodendrocytes both in the lesioned area and in the contralateral CA1-CA3 pyramidal cell layers and dentate gyrus. One week after needle-induced mechanical lesion an increase of labeled cells expressing CaSR mRNA was observed along the needle track. In conclusion the present results contribute to extend available data on cell type-expressing CaSR in normal and injured brain and could spur to understand the role of CaSR in repairing processes of brain injury.Receptors Calcium-SensingIbotenic acidDevelopmental BiologyAstrocyte
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Extracellular calcium-sensing receptor mediates human bronchial epithelial wound repair

2010

The airway epithelium routinely undergoes damage that requires repair to restore epithelial barrier integrity. Cell migration followed by proliferation are necessary steps to achieve epithelial repair. Calcium-sensing receptor (CaSR) is implicated in cell migration and proliferation processes. Thus we hypothesized that CaSR mediates lung epithelial wound repair. We detected CaSR expression in human lung and in well-differentiated human bronchial epithelial cells (HBEC). To test the CaSR functionality, HBEC loaded with fura-2 were stimulated with extracellular Ca(2+) ([Ca(2+)](out)) which resulted in a concentration-dependent intracellular Ca(2+) ([Ca(2+)](i)) increase (potency approximately…

Pathologymedicine.medical_specialtyBronchiBiologyBiochemistryCell MovementmedicineExtracellularHumansCalcium SignalingEnzyme InhibitorsEstrenesReceptorEgtazic AcidCell ProliferationPharmacologyWound HealingPhospholipase CCell growthEpithelial CellsCell migrationPyrrolidinonesEpitheliumCell biologymedicine.anatomical_structureRespiratory epitheliumCalciumCalcium-sensing receptorFura-2Receptors Calcium-SensingBiochemical Pharmacology
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Nickel induces intracellular calcium mobilization and pathophysiological responses in human cultured airway epithelial cells.

2009

Abstract Environmental exposure to nickel is associated to respiratory disorders and potential toxicity in the lung but molecular mechanisms remain incompletely explored. The extracellular Ca 2+ -sensing receptor (CaSR) is widely distributed and may be activated by divalent cations. In this study, we investigated the presence of CaSR in human cultured airway epithelial cells and its activation by nickel. Nickel transiently increased intracellular calcium (−log EC 50  = 4.67 ± 0.06) in A549 and human bronchial epithelial cells as measured by epifluorescence microscopy. Nickel (20 μM)-induced calcium responses were reduced after thapsigargin or ryanodine exposure but not by Ca 2+ -free medium…

ThapsigarginInterleukin-1betachemistry.chemical_elementRespiratory MucosaBiologyCalciumToxicologyCalcium in biologychemistry.chemical_compoundNickelExtracellularHumansRNA Small InterferingCells CulturedA549 cellRyanodine receptorRyanodineTumor Necrosis Factor-alphaInositol trisphosphateEpithelial CellsGeneral MedicineEnvironmental exposureIntercellular Adhesion Molecule-1Cell biologychemistryMicroscopy FluorescenceType C PhospholipasesImmunologyGTP-Binding Protein alpha Subunits Gq-G11ThapsigarginCalciumReceptors Calcium-SensingChemico-biological interactions
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