Search results for "G-Protein-Coupled Receptor Kinase 5"

showing 4 items of 4 documents

The Amino-Terminal Domain of GRK5 Inhibits Cardiac Hypertrophy through the Regulation of Calcium-Calmodulin Dependent Transcription Factors.

2018

We have recently demonstrated that the amino-terminal domain of G protein coupled receptor kinase (GRK) type 5, (GRK5-NT) inhibits NFκB activity in cardiac cells leading to a significant amelioration of LVH. Since GRK5-NT is known to bind calmodulin, this study aimed to evaluate the functional role of GRK5-NT in the regulation of calcium-calmodulin-dependent transcription factors. We found that the overexpression of GRK5-NT in cardiomyoblasts significantly reduced the activation and the nuclear translocation of NFAT and its cofactor GATA-4 in response to phenylephrine (PE). These results were confirmed in vivo in spontaneously hypertensive rats (SHR), in which intramyocardial adenovirus-med…

0301 basic medicineG-Protein-Coupled Receptor Kinase 5MalecalmodulinMutantWistarPlasma protein binding030204 cardiovascular system & hematologyCatalysilcsh:ChemistryPhenylephrine0302 clinical medicineRats Inbred SHRMyocytes Cardiaclcsh:QH301-705.5SpectroscopybiologyChemistrycardiac hypertrophyNFATComputer Science Applications1707 Computer Vision and Pattern RecognitionGeneral MedicineLeft VentricularComputer Science ApplicationsCell biologycardiac hypertrophy; transcription factors; calmodulin; GRKGRKHypertrophy Left VentricularCardiacProtein BindingInbred SHRCalmodulinCalmodulin; Cardiac hypertrophy; GRK; Transcription factors; Animals; Binding Sites; Calmodulin; Cell Line; G-Protein-Coupled Receptor Kinase 5; GATA4 Transcription Factor; Hypertrophy Left Ventricular; Male; Myocytes Cardiac; NFATC Transcription Factors; Phenylephrine; Protein Binding; Rats; Rats Inbred SHR; Rats Wistar; Catalysis; Molecular Biology; Spectroscopy; Computer Science Applications1707 Computer Vision and Pattern Recognition; Physical and Theoretical Chemistry; Organic Chemistry; Inorganic ChemistryCatalysisArticleCell LineInorganic Chemistry03 medical and health sciencesG-Protein-Coupled Receptor Kinase 5transcription factorsAnimalsPhysical and Theoretical ChemistryRats WistarTranscription factorMolecular BiologyG protein-coupled receptor kinaseMyocytesBinding SitesNFATC Transcription FactorsOrganic ChemistryHypertrophyNFATC Transcription FactorsGATA4 Transcription FactorRats030104 developmental biologylcsh:Biology (General)lcsh:QD1-999biology.proteinTranscription factorInternational journal of molecular sciences
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G-protein-coupled receptor kinase 5 polymorphism and Takotsubo cardiomyopathy.

2015

BACKGROUND: Takotsubo cardiomyopathy (TTC) is an increasingly reported clinical syndrome that mimics acute myocardial infarction without obstructive coronary artery disease and is characterized by transient systolic dysfunction of the apical and/or mid-segments of the left ventricle. The syndrome mainly occurs in postmenopausal women with high adrenergic state conditions. Nowadays, the pathophysiology of TTC is not yet known and the possibility of a genetic predisposition is controversial. AIMS: The purpose of this study was to assess the genetic susceptibility to TTC through analysis of the L41Q polymorphism of the G-protein-coupled receptor kinase 5 (GRK5). METHODS AND RESULTS: In a cohor…

G-Protein-Coupled Receptor Kinase 5Malemedicine.medical_specialtyCardiomyopathyInfarctionCohort StudiesGene FrequencyG-Protein-Coupled Receptor Kinase 5Takotsubo CardiomyopathyInternal medicineGenotypemedicineGenetic predispositionHumansSettore MED/05 - Patologia ClinicaGenetic Predisposition to Diseasecardiovascular diseasesgenotype G-protein-coupled receptor kinase 5 gene polymorphism Takotsubo cardiomyopathyAgedPolymorphism Geneticbusiness.industryCase-control studyGeneral MedicineMiddle Agedmedicine.diseaseSettore MED/11 - Malattie Dell'Apparato Cardiovascolaremedicine.anatomical_structureVentricleCase-Control StudiesCardiologyFemaleCardiology and Cardiovascular MedicinebusinessCohort study
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Myocardial G Protein Receptor–Coupled Kinase Expression Correlates With Functional Parameters and Clinical Severity in Advanced Heart Failure

2010

In heart failure (HF), sympathetic hyperactivation induces deleterious effects in myocardial β-adrenergic signaling, with receptor down-regulation and desensitization mediated by G protein receptor-coupled kinases (GRKs). We hypothesised that changes in GRK isoforms may be associated with clinical status in advanced HF, using the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) scale.We included 31 patients with advanced HF undergoing transplantation. According to INTERMACS profiles, mRNA and protein levels of GRK isoforms in left ventricular (LV) myocardium were analyzed and compared with nonfailing LV samples.In failing LV myocardium, GRK2 and GRK5 (but not G…

G-Protein-Coupled Receptor Kinase 5Malemedicine.medical_specialtyG-Protein-Coupled Receptor Kinase 2Down-RegulationPolymerase Chain ReactionSeverity of Illness IndexGene Expression Regulation EnzymologicInternal medicinemedicineHumansRNA MessengerRegistriesReceptorG protein-coupled receptorHeart FailureG protein-coupled receptor kinasebiologybusiness.industryMyocardiumBeta adrenergic receptor kinaseStroke volumeMiddle AgedG-Protein-Coupled Receptor Kinasesmedicine.diseaseTransplantationEndocrinologySpainHeart failureCirculatory systembiology.proteinFemaleHeart-Assist DevicesCardiology and Cardiovascular MedicinebusinessJournal of Cardiac Failure
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β2- and β1-Adrenoceptor Expression Exhibits a Common Regulatory Pattern With GRK2 and GRK5 in Human and Animal Models of Cardiovascular Diseases.

2015

To explore if genic expression of β(1)- or β(2)-adrenoceptors (ARs) exhibits a common regulatory pattern with G protein-coupled receptor kinase (GRK) 2, GRK3, or GRK5 expression, we determined messenger RNA levels for these genes in different tissues from human and animal models of cardiovascular disease. We measured genic expression by qRT polymerase chain reaction in the left and right ventricles or peripheral blood mononuclear cells from healthy (n = 21), hypertensive (n = 20), heart failure (n = 24), and heart transplanted patients (n = 17) or in left ventricle, peripheral blood mononuclear cells, and kidney from spontaneously hypertensive rats or L-N-methyl-arginine-induced hypertensiv…

G-Protein-Coupled Receptor Kinase 5medicine.medical_specialtyG-Protein-Coupled Receptor Kinase 2Heart DiseasesBiologyPeripheral blood mononuclear cellRats Inbred WKYInternal medicineRats Inbred SHRmedicineAnimalsHumansRNA MessengerReceptorGenePharmacologyRegulation of gene expressionMessenger RNAG protein-coupled receptor kinaseKinaseBeta adrenergic receptor kinaseDisease Models AnimalEndocrinologyNG-Nitroarginine Methyl EsterGene Expression RegulationOrgan SpecificityCase-Control StudiesHypertensionbiology.proteinReceptors Adrenergic beta-2Receptors Adrenergic beta-1Cardiology and Cardiovascular MedicineJournal of cardiovascular pharmacology
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