Search results for "Beta-1 adrenergic receptor"

showing 3 items of 3 documents

MiR-133 Modulates the β1Adrenergic Receptor Transduction Cascade.

2014

Rationale : The sympathetic nervous system plays a fundamental role in the regulation of myocardial function. During chronic pressure overload, overactivation of the sympathetic nervous system induces the release of catecholamines, which activate β-adrenergic receptors in cardiomyocytes and lead to increased heart rate and cardiac contractility. However, chronic stimulation of β-adrenergic receptors leads to impaired cardiac function, and β-blockers are widely used as therapeutic agents for the treatment of cardiac disease. MicroRNA-133 (miR-133) is highly expressed in the myocardium and is involved in controlling cardiac function through regulation of messenger RNA translation/stability. …

MalePhysiologyMessengerheart failureApoptosiscardiomyocytesInbred C57BLSecond Messenger SystemsTransgenicRats Sprague-DawleyBeta-1 adrenergic receptorMiceGenes ReporterReceptorsCyclic AMPGuanine Nucleotide Exchange FactorsMyocytes CardiacAlpha-1D adrenergic receptor3' Untranslated RegionsCells CulturedCulturedbiologyChemistryadrenergic beta-1 receptor antagonists; cardiac; cyclic AMP; heart failure; microRNAs; myocytes; 3' Untranslated Regions; Adenylyl Cyclases; Animals; Apoptosis; Cells Cultured; Cyclic AMP; Cyclic AMP-Dependent Protein Kinases; Disease Progression; Gene Expression Regulation; Genes Reporter; Guanine Nucleotide Exchange Factors; Male; Metoprolol; Mice; Mice Inbred C57BL; Mice Transgenic; MicroRNAs; Myocardium; Myocytes Cardiac; RNA Messenger; Rats; Rats Sprague-Dawley; Receptors Adrenergic beta-1; Recombinant Fusion Proteins; Second Messenger Systems; Physiology; Cardiology and Cardiovascular Medicine; Medicine (all)Medicine (all)Cell biologyAdrenergicadrenergic beta-1 receptor antagonistsDisease ProgressionCARDIAC HYPERTROPHYSignal transductionCardiology and Cardiovascular MedicineAdenylyl CyclasesMetoprololmedicine.medical_specialtyAdrenergic receptorcardiacCellsRecombinant Fusion ProteinsMice Transgenicbeta-1Alpha-1B adrenergic receptorInternal medicinecAMPmedicineAnimalsRNA MessengerReporterPressure overloadalpha and beta adrenoceptorsMyocytesMyocardiumBeta adrenergic receptor kinaseCyclic AMP-Dependent Protein KinasesAlpha-1A adrenergic receptorRatsMice Inbred C57BLMicroRNAsEndocrinologyGenesGene Expression Regulationbiology.proteinRNASprague-DawleyReceptors Adrenergic beta-1MicroRNAs; alpha and beta adrenoceptors; cardiomyocytes; CARDIAC HYPERTROPHY; cAMP
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A mutation in the second intracellular loop of the pituitary adenylate cyclase activating polypeptide type I receptor confers constitutive receptor a…

2000

AbstractThe pituitary adenylate cyclase activating polypeptide (PACAP) type I receptor belongs to the glucagon/secretin/vasoactive intestinal polypeptide (VIP) receptor family. We mutated and deleted an amino acid residue (E261) which is located within the second intracellular loop of the rat PACAP type I receptor and which is highly conserved among the receptor family. The wild-type receptor and the mutant receptors were efficiently expressed at the surface of COS-7 cells at nearly the same level and revealed the same high affinity for the agonist PACAP-27. The cAMP contents of COS cells transfected with the E261A, E261Q, and the deletion mutant receptor were 4.6-, 5.7-, and 6.7-fold highe…

endocrine systemGrowth-hormone-releasing hormone receptorMolecular Sequence DataReceptors Pituitary Adenylate Cyclase-Activating PolypeptideBiophysicsGlutamic AcidSignal transductionTransfectionBiochemistryBeta-1 adrenergic receptorConstitutive activityStructural BiologycAMPCyclic AMPGeneticsEnzyme-linked receptorAnimals5-HT5A receptorAmino Acid SequenceReceptors Pituitary HormoneMolecular BiologySequence DeletionPeptide hormone receptorSite-directed mutagenesisPituitary adenylate cyclase activating polypeptideChemistryLiver receptor homolog-1Cell BiologyMolecular biologyRatsInterleukin-21 receptorCOS CellsMutagenesis Site-DirectedEstrogen-related receptor gammaSequence AlignmentGlucagon receptor familyhormones hormone substitutes and hormone antagonistsAdenylyl CyclasesReceptors Pituitary Adenylate Cyclase-Activating Polypeptide Type IFEBS Letters
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Adrenoceptor-mediated changes of excitation and contraction in isolated heart muscle preparations.

1989

The inotropic effects of sympathetic stimulation on the heart are mainly ascribed to the activation of beta-adrenoceptors. However, several findings suggest that alpha-adrenoceptors also may help mediate the inotropic response to catecholamines under certain conditions. The onset of the positive inotropic effect mediated by beta-adrenoceptors occurs within seconds and is associated with a faster rate of relaxation. Both beta 1- and beta 2-adrenoceptors are stimulatorily coupled to the enzyme adenylate cyclase, thereby leading to the generation of cyclic AMP. Cyclic AMP increases the slow inward calcium current and enhances the uptake of calcium into the sarcoplasmic reticulum. GTP-binding p…

Pharmacologymedicine.medical_specialtyMuscarineAdrenergic receptorAdenylate kinaseStimulationHeartIn Vitro TechniquesAdenosine receptorCyclaseMyocardial ContractionReceptors AdrenergicBeta-1 adrenergic receptorchemistry.chemical_compoundEndocrinologychemistryInternal medicinemedicineAnimalsHumansmedicine.symptomCardiology and Cardiovascular MedicineMuscle contractionJournal of cardiovascular pharmacology
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