Search results for "Double labeling"

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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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Rapid quantitative method for measuring phagocytosis of Leishmania promastigotes using a double radiolabelling method.

1990

A double radiolabelling method is described for the measurement of phagocytosis of Leishmania major promastigotes in cultures of murine resident peritoneal macrophages. L. major promastigotes were radiolabelled during exponential growth in RPMI supplemented with [125I]5-iodo-2-deoxyuridine. They were used to infect sodium [51Cr]chromate-labelled macrophages. Phagocytosis was evaluated by measuring the radioactivity of the 125IUdR-labelled parasites detectable inside 51Cr-labelled macrophages by a Beckmann gamma 5500 counting system. This was able to count simultaneously, in two different windows the radioactivity of (a) the parasites and (b) the cells. The technique compares favorably with …

Pathologymedicine.medical_specialtyCell Membrane PermeabilityPhagocytosisImmunologyMice Inbred StrainsBiologyMicePhagocytosisIdoxuridinemedicineImmunology and AllergyMacrophageAnimalsLeishmania majorRadiometryLeishmaniasisPeritoneal CavityMicroscopyDouble labelingMacrophagesbiology.organism_classificationLeishmaniaMolecular biologyCell cultureLeishmania tropicaProtozoaJournal of immunological methods
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