Search results for "5-HT1 receptor"

showing 3 items of 3 documents

Enhancement of the FGFR1 signaling in the FGFR1-5-HT1A heteroreceptor complex in midbrain raphe 5-HT neuron systems. Relevance for neuroplasticity an…

2015

New findings show existence of FGFR1-5-HT1A heteroreceptor complexes in 5-HT nerve cells of the dorsal and median raphe nuclei of the rat midbrain and hippocampus. Synergistic receptor-receptor interactions in these receptor complexes indicated their enhancing role in hippocampal plasticity. The existence of FGFR1-5-HT1A heteroreceptor complexes also in midbrain raphe 5-HT nerve cells open up the possibility that antidepressant drugs by increasing extracellular 5-HT levels can cause an activation of the FGF-2/FGFR1 mechanism in these nerve cells as well. Therefore, the agonist modulation of the FGFR1-5-HT1A heteroreceptor complexes and their specific role is now determined in rat medullary …

AgonistSerotoninmedicine.medical_specialtymedicine.drug_classCellular differentiationBiophysicsHeteroreceptor complexBiologyHeteroreceptorBiochemistrySettore BIO/09 - FisiologiaCell LineMidbrainDorsal raphe nucleusMesencephalonInternal medicinemedicineAnimalsSerotonin 5-HT1A receptorReceptor Fibroblast Growth Factor Type 1Protein Interaction MapsPhosphorylationExtracellular Signal-Regulated MAP KinasesMolecular BiologyNeurons8-Hydroxy-2-(di-n-propylamino)tetralinNeuronal PlasticityRapheDepressionAnimalExtracellular Signal-Regulated MAP KinaseCell BiologySerotonin 5-HT1 Receptor AgonistsNeuronFibroblast growth factor receptorRatsEndocrinologymedicine.anatomical_structurenervous systemReceptor Serotonin 5-HT1AAutoreceptorRatFibroblast Growth Factor 2Serotonin 5-HT1 Receptor AgonistNeuronDimerizationNeuroscienceDepression; Dimerization; Fibroblast growth factor receptor; Heteroreceptor complex; Neuronal plasticity; Serotonin 5-HT1A receptor; 8-Hydroxy-2-(di-n-propylamino)tetralin; Animals; Cell Line; Extracellular Signal-Regulated MAP Kinases; Fibroblast Growth Factor 2; Mesencephalon; Neurons; Phosphorylation; Rats; Receptor Fibroblast Growth Factor Type 1; Receptor Serotonin 5-HT1A; Serotonin; Serotonin 5-HT1 Receptor Agonists; Neuronal Plasticity; Protein Interaction Maps
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Pharmacological comparison of rat and human melanocortin 3 and 4 receptors in vitro.

2002

Abstract The melanocortin 3 and 4 receptors are G-protein-coupled receptors found in the hypothalamus with important role in regulation of the energy balance. In this study, we performed pharmacological comparison of the rat and human melancortin (MC) 3 and MC4 receptors. We transiently expressed the genes for these receptors individually in a mammalian cell line and determined the binding affinities to several MSH peptides. The results showed no major difference between the rat and human MC3 receptors while the rat MC4 receptor had higher affinity to several peptides compared with the human MC4 receptor. NDP-, α-, β-, γ-MSH, ACTH(1–24), HS014 and MTII had from 5- to 34-fold higher affinity…

medicine.medical_specialtyPhysiologyClinical BiochemistryHypothalamusClass C GPCRBiologyLigandsBiochemistryBinding CompetitiveCellular and Molecular NeuroscienceChemokine receptorEndocrinologyMelanocortin receptorInternal medicinemedicineCyclic AMPAnimalsHumansACTH receptorReceptor5-HT receptor5-HT2 receptorCell biologyRatsEndocrinologyReceptors Corticotropinalpha-MSHCOS CellsReceptor Melanocortin Type 45-HT1 receptorProtein BindingReceptor Melanocortin Type 3Regulatory peptides
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Characterization of 5-Hydroxytryptamine receptors in goat cerebral arteries

1995

1. In isolated goat middle cerebral artery segments, 5-hydroxytryptamine (5-HT, 10(-8)-3 x 10(-5) M) elicited concentration-dependent contractions with EC50 = 2.1 (1.9-2.5) x 10(-7) M and Emax = 64 +/- 2% of 50 mM KCl-induced contraction. 2. Several 5-HT receptor agonists were used: (a) the agonist of 5-HT2 receptors alpha-methyl-5-hydroxy-tryptamine (10(-7)-3 x 10(-4) M) induced strong contraction (51 +/- 6%); (b) the selective agonists of 5-HT1 receptors sumatriptan (10(-8)-10(-5) M) and 5-carboxamidotryptamine (10(-9)-10(-4) M) and the agonist of 5-HT1A receptors 8-hydroxy-2-(di-n-propylamino)tetralin (10(-7)-3 x 10(-5) M) induced weak contractions (8, 18 and 14%, respectively); and (c) …

AgonistSerotoninmedicine.medical_specialtyKetanserinmedicine.drug_classMethysergideMuscle Smooth VascularInternal medicinemedicineAnimalsReceptor5-HT receptorPharmacology8-Hydroxy-2-(di-n-propylamino)tetralinDose-Response Relationship DrugChemistryGoats5-HT2 receptorCerebral ArteriesEndocrinologyReceptors SerotoninFemale5-HT1 receptorCyanopindololMuscle Contractionmedicine.drugGeneral Pharmacology: The Vascular System
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