Search results for "Human Parathyroid"

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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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Modified cryopreservation and xenotransplantation of human parathyroid tissue.

1999

Introduction: A modified cryopreservation technique for human parathyroid tissue was compared with the standard method using a programmed freezer. Methods: Total parathyroidectomy was performed in three groups of 6-week-old Rowett nude rats. Group I (control) underwent no transplantation of parathyroid tissue (n=9). After 10 days, the rats of groups II (n=15) and III (n=15) underwent xenotransplantation of 20 mg cryopreserved human parathyroid tissue, which had been stored in liquid nitrogen at –196°C for 1–22 months prior to xenotransplantation. The parathyroid tissue was derived from 15 parathyroidectomized patients with renal hyperparathyroidism. Two tissue samples were obtained from eve…

medicine.medical_specialtyXenotransplantationmedicine.medical_treatmentTotal parathyroidectomyTransplantation Heterologouschemistry.chemical_elementCalciumCryopreservationParathyroid GlandsRats NudeInternal medicinemedicineAnimalsHumansCryopreservationParathyroidectomybusiness.industrySignificant differenceIndividual differenceRatsTransplantationEndocrinologychemistryParathyroid HormoneSurgeryHuman ParathyroidCalciumbusinessLangenbeck's archives of surgery
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