Meyer-Roxlau, Stefanie

[["dc.bibliographiccitation.artnumber","e003840"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Circulation: Heart Failure"],["dc.bibliographiccitation.lastpage","9"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Neef, Stefan"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","Lämmle, Simon"],["dc.contributor.author","Beushausen, Christina"],["dc.contributor.author","Zelarayan, Laura C."],["dc.contributor.author","Katz, Sylvia"],["dc.contributor.author","von der Lieth, Albert"],["dc.contributor.author","Meyer-Roxlau, Stefanie"],["dc.contributor.author","Weber, Silvio"],["dc.contributor.author","Wieland, Thomas"],["dc.contributor.author","Sossalla, Samuel"],["dc.contributor.author","Backs, Johannes"],["dc.contributor.author","Brown, Joan H."],["dc.contributor.author","Maier, Lars S."],["dc.contributor.author","El-Armouche, Ali"],["dc.date.accessioned","2020-12-10T18:37:57Z"],["dc.date.available","2020-12-10T18:37:57Z"],["dc.date.issued","2017"],["dc.description.abstract","Background— Considerable evidence suggests that calcium/calmodulin-dependent protein kinase II (CaMKII) overactivity plays a crucial role in the pathophysiology of heart failure (HF), a condition characterized by excessive β-adrenoceptor (β-AR) stimulation. Recent studies indicate a significant cross talk between β-AR signaling and CaMKII activation presenting CaMKII as a possible downstream mediator of detrimental β-AR signaling in HF. In this study, we investigated the effect of chronic β-AR blocker treatment on CaMKII activity in human and experimental HF. Methods and Results— Immunoblot analysis of myocardium from end-stage HF patients (n=12) and non-HF subjects undergoing cardiac surgery (n=12) treated with β-AR blockers revealed no difference in CaMKII activity when compared with non–β-AR blocker–treated patients. CaMKII activity was judged by analysis of CaMKII expression, autophosphorylation, and oxidation and by investigating the phosphorylation status of CaMKII downstream targets. To further evaluate these findings, CaMKIIδC transgenic mice were treated with the β1-AR blocker metoprolol (270 mg/kg d). Metoprolol significantly reduced transgene-associated mortality (n≥29; P<0.001), attenuated the development of cardiac hypertrophy (−14±6% heart weight/tibia length; P<0.05), and strongly reduced ventricular arrhythmias (−70±22% premature ventricular contractions; P<0.05). On a molecular level, metoprolol expectedly decreased protein kinase A–dependent phospholamban and ryanodine receptor 2 phosphorylation (−42±9% for P-phospholamban-S16 and −22±7% for P-ryanodine receptor 2-S2808; P<0.05). However, this was paralled neither by a reduction in CaMKII autophosphorylation, oxidation, and substrate binding nor a change in the phosphorylation of CaMKII downstream target proteins (n≥11). The lack of CaMKII modulation by β-AR blocker treatment was confirmed in healthy wild-type mice receiving metoprolol. Conclusions— Chronic β-AR blocker therapy in patients and in a mouse model of CaMKII-induced HF is not associated with a change in CaMKII activity. Thus, our data suggest that the molecular effects of β-AR blockers are not based on a modulation of CaMKII. Directly targeting CaMKII may, therefore, further improve HF therapy in addition to β-AR blockade."],["dc.identifier.doi","10.1161/CIRCHEARTFAILURE.117.003840"],["dc.identifier.pmid","28487342"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77149"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/171"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","final"],["dc.relation","SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz"],["dc.relation","SFB 1002 | A02: Bedeutung des Phosphatase-Inhibitors-1 für die SR-spezifische Modulation der Beta- adrenozeptor-Signalkaskade"],["dc.relation","SFB 1002 | A03: Bedeutung CaMKII-abhängiger Mechanismen für die Arrhythmogenese bei Herzinsuffizienz"],["dc.relation.issn","1941-3289"],["dc.relation.issn","1941-3297"],["dc.relation.workinggroup","RG El-Armouche"],["dc.relation.workinggroup","RG L. Maier (Experimentelle Kardiologie)"],["dc.relation.workinggroup","RG Sossalla (Kardiovaskuläre experimentelle Elektrophysiologie und Bildgebung)"],["dc.relation.workinggroup","RG Zelarayán-Behrend (Developmental Pharmacology)"],["dc.title","Calcium/Calmodulin-Dependent Protein Kinase II Activity Persists During Chronic β-Adrenoceptor Blockade in Experimental and Human Heart Failure"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","S67"],["dc.bibliographiccitation.journal","Naunyn-Schmiedeberg s Archives of Pharmacology"],["dc.bibliographiccitation.lastpage","S68"],["dc.bibliographiccitation.volume","387"],["dc.contributor.author","Meyer-Roxlau, Stefanie"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","El-Armouche, Ali"],["dc.date.accessioned","2018-11-07T09:44:49Z"],["dc.date.available","2018-11-07T09:44:49Z"],["dc.date.issued","2014"],["dc.identifier.isi","000359538500273"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34478"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","New york"],["dc.relation.conference","80th Annual Meeting of the Deutsche-Gesellschaft-fur-Experimentelle-und-Klinische-Pharmakologie-und Toxikologie-e-V"],["dc.relation.eventlocation","Hannover, GERMANY"],["dc.relation.issn","1432-1912"],["dc.relation.issn","0028-1298"],["dc.title","Development of molecular imaging tools to investigate protein phosphatase type-1 and type-2A localisation and dynamics in living cells"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1004"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Circulation Research"],["dc.bibliographiccitation.lastpage","1016"],["dc.bibliographiccitation.volume","119"],["dc.contributor.author","Swain, Lija"],["dc.contributor.author","Kesemeyer, Andrea"],["dc.contributor.author","Meyer-Roxlau, Stefanie"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","Zieseniss, Anke"],["dc.contributor.author","Güntsch, Annemarie"],["dc.contributor.author","Jatho, Aline"],["dc.contributor.author","Becker, Andreas"],["dc.contributor.author","Nanadikar, Maithily S."],["dc.contributor.author","Morgan, Bruce"],["dc.contributor.author","Dennerlein, Sven"],["dc.contributor.author","Shah, Ajay M."],["dc.contributor.author","El-Armouche, Ali"],["dc.contributor.author","Nikolaev, Viacheslav O."],["dc.contributor.author","Katschinski, Dörthe M."],["dc.date.accessioned","2020-12-10T18:37:59Z"],["dc.date.available","2020-12-10T18:37:59Z"],["dc.date.issued","2016"],["dc.description.abstract","Rationale: Changes in redox potentials of cardiac myocytes are linked to several cardiovascular diseases. Redox alterations are currently mostly described qualitatively using chemical sensors, which however do not allow quantifying redox potentials, lack specificity, and the possibility to analyze subcellular domains. Recent advances to quantitatively describe defined redox changes include the application of genetically encoded redox biosensors. Objective: Establishment of mouse models, which allow the quantification of the glutathione redox potential (E-GSH) in the cytoplasm and the mitochondrial matrix of isolated cardiac myocytes and in Langendorff-perfused hearts based on the use of the redox-sensitive green fluorescent protein 2, coupled to the glutaredoxin 1 (Grx1-roGFP2). Methods and Results: We generated transgenic mice with cardiac myocyte-restricted expression of Grx1-roGFP2 targeted either to the mitochondrial matrix or to the cytoplasm. The response of the roGFP2 toward H2O2, diamide, and dithiothreitol was titrated and used to determine the E-GSH in isolated cardiac myocytes and in Langendorff-perfused hearts. Distinct E-GSH were observed in the cytoplasm and the mitochondrial matrix. Stimulation of the cardiac myocytes with isoprenaline, angiotensin II, or exposure to hypoxia/reoxygenation additionally underscored that these compartments responded independently. A compartment-specific response was also observed 3 to 14 days after myocardial infarction. Conclusions: We introduce redox biosensor mice as a new tool, which allows quantification of defined alterations of E-GSH in the cytoplasm and the mitochondrial matrix in cardiac myocytes and can be exploited to answer questions in basic and translational cardiovascular research."],["dc.identifier.doi","10.1161/CIRCRESAHA.116.309551"],["dc.identifier.eissn","1524-4571"],["dc.identifier.isi","000386313900013"],["dc.identifier.issn","0009-7330"],["dc.identifier.pmid","27553648"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77158"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Lippincott Williams & Wilkins"],["dc.relation.issn","1524-4571"],["dc.relation.issn","0009-7330"],["dc.title","Redox Imaging Using Cardiac Myocyte-Specific Transgenic Biosensor Mice"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Naunyn-Schmiedeberg s Archives of Pharmacology"],["dc.bibliographiccitation.volume","387"],["dc.contributor.author","Saadatmand, Ali Reza"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Meyer-Roxlau, Stefanie"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","Lehmann, Lorenz H."],["dc.contributor.author","Backs, Johannes"],["dc.contributor.author","El-Armouche, Ali"],["dc.date.accessioned","2018-11-07T09:44:50Z"],["dc.date.available","2018-11-07T09:44:50Z"],["dc.date.issued","2014"],["dc.format.extent","S80"],["dc.identifier.isi","000359538500325"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34485"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","New york"],["dc.relation.conference","80th Annual Meeting of the Deutsche-Gesellschaft-fur-Experimentelle-und-Klinische-Pharmakologie-und Toxikologie-e-V"],["dc.relation.eventlocation","Hannover, GERMANY"],["dc.relation.issn","1432-1912"],["dc.relation.issn","0028-1298"],["dc.title","PKA and CaMKII- mediated phosphorylation of Histone H3S28 during pathological b-adrenergic stimulation"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Acta Physiologica"],["dc.bibliographiccitation.volume","219"],["dc.contributor.author","Swain, Lija"],["dc.contributor.author","Kesemeyer, Andrea"],["dc.contributor.author","Meyer-Roxlau, Stefanie"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","Glintsch, A."],["dc.contributor.author","Zieseniss, Anke"],["dc.contributor.author","Jatho, Aline"],["dc.contributor.author","Morgan, B."],["dc.contributor.author","Dennedein, S."],["dc.contributor.author","Shah, Ajay M."],["dc.contributor.author","Ali, E.-A."],["dc.contributor.author","Nikolaev, V."],["dc.contributor.author","Katschinski, Doerthe Magdalena"],["dc.date.accessioned","2018-11-07T10:26:38Z"],["dc.date.available","2018-11-07T10:26:38Z"],["dc.date.issued","2017"],["dc.identifier.isi","000395770300308"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43083"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Wiley"],["dc.publisher.place","Hoboken"],["dc.title","Generation and characterization of glutathione redox potential sensor mice"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]