Dewenter, Matthias

[["dc.bibliographiccitation.firstpage","1596"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","Journal of the American College of Cardiology"],["dc.bibliographiccitation.lastpage","1606"],["dc.bibliographiccitation.volume","62"],["dc.contributor.author","Mehel, Hind"],["dc.contributor.author","Emons, Julius"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","Wittköpper, Katrin"],["dc.contributor.author","Seppelt, Danilo"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Lutz, Susanne"],["dc.contributor.author","Sossalla, Samuel"],["dc.contributor.author","Maier, Lars S."],["dc.contributor.author","Lechêne, Patrick"],["dc.contributor.author","Leroy, Jérôme"],["dc.contributor.author","Lefebvre, Florence"],["dc.contributor.author","Varin, Audrey"],["dc.contributor.author","Eschenhagen, Thomas"],["dc.contributor.author","Nattel, Stanley"],["dc.contributor.author","Dobrev, Dobromir"],["dc.contributor.author","Zimmermann, Wolfram-Hubertus"],["dc.contributor.author","Nikolaev, Viacheslav O."],["dc.contributor.author","Vandecasteele, Grégoire"],["dc.contributor.author","Fischmeister, Rodolphe"],["dc.contributor.author","El-Armouche, Ali"],["dc.date.accessioned","2019-01-14T16:02:22Z"],["dc.date.available","2019-01-14T16:02:22Z"],["dc.date.issued","2013"],["dc.description.abstract","Objectives This study investigated whether myocardial phosphodiesterase-2 (PDE2) is altered in heart failure (HF) and determined PDE2-mediated effects on beta-adrenergic receptor (β-AR) signaling in healthy and diseased cardiomyocytes. Background Diminished cyclic adenosine monophosphate (cAMP) and augmented cyclic guanosine monophosphate (cGMP) signaling is characteristic for failing hearts. Among the PDE superfamily, PDE2 has the unique property of being able to be stimulated by cGMP, thus leading to a remarkable increase in cAMP hydrolysis mediating a negative cross talk between cGMP and cAMP signaling. However, the role of PDE2 in HF is poorly understood. Methods Immunoblotting, radioenzymatic- and fluorescence resonance energy transfer–based assays, video edge detection, epifluorescence microscopy, and L-type Ca2+ current measurements were performed in myocardial tissues and/or isolated cardiomyocytes from human and/or experimental HF, respectively. Results Myocardial PDE2 expression and activity were ∼2-fold higher in advanced human HF. Chronic β-AR stimulation via catecholamine infusions in rats enhanced PDE2 expression ∼2-fold and cAMP hydrolytic activity ∼4-fold, which correlated with blunted cardiac β-AR responsiveness. In diseased cardiomyocytes, higher PDE2 activity could be further enhanced by stimulation of cGMP synthesis via nitric oxide donors, whereas specific PDE2 inhibition partially restored β-AR responsiveness. Accordingly, PDE2 overexpression in healthy cardiomyocytes reduced the rise in cAMP levels and L-type Ca2+ current amplitude, and abolished the inotropic effect following acute β-AR stimulation, without affecting basal contractility. Importantly, PDE2-overexpressing cardiomyocytes showed marked protection from norepinephrine-induced hypertrophic responses. Conclusions PDE2 is markedly up-regulated in failing hearts and desensitizes against acute β-AR stimulation. This may constitute an important defense mechanism during cardiac stress, for example, by antagonizing excessive β-AR drive. Thus, activating myocardial PDE2 may represent a novel intracellular antiadrenergic therapeutic strategy in HF."],["dc.identifier.doi","10.1016/j.jacc.2013.05.057"],["dc.identifier.gro","3142269"],["dc.identifier.isi","000325937400010"],["dc.identifier.pmid","23810893"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57317"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/37"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation","SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz"],["dc.relation","SFB 1002 | A01: cAMP- und cGMP- Mikrodomänen bei Herzhypertrophie und Insuffizienz"],["dc.relation","SFB 1002 | A02: Bedeutung des Phosphatase-Inhibitors-1 für die SR-spezifische Modulation der Beta- adrenozeptor-Signalkaskade"],["dc.relation","SFB 1002 | C02: RhoGTPasen und ihre Bedeutung für die Last-abhängige Myokardfibrose"],["dc.relation","SFB 1002 | C04: Fibroblasten-Kardiomyozyten Interaktion im gesunden und erkrankten Herzen: Mechanismen und therapeutische Interventionen bei Kardiofibroblastopathien"],["dc.relation.eissn","1558-3597"],["dc.relation.issn","1558-3597"],["dc.relation.issn","0735-1097"],["dc.relation.workinggroup","RG El-Armouche"],["dc.relation.workinggroup","RG Lutz (G Protein-Coupled Receptor Mediated Signaling)"],["dc.relation.workinggroup","RG L. Maier (Experimentelle Kardiologie)"],["dc.relation.workinggroup","RG Nikolaev (Cardiovascular Research Center)"],["dc.relation.workinggroup","RG Sossalla (Kardiovaskuläre experimentelle Elektrophysiologie und Bildgebung)"],["dc.relation.workinggroup","RG Zimmermann (Engineered Human Myocardium)"],["dc.title","Phosphodiesterase-2 Is Up-Regulated in Human Failing Hearts and Blunts β-Adrenergic Responses in Cardiomyocytes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["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.journal","Naunyn-Schmiedeberg s Archives of Pharmacology"],["dc.bibliographiccitation.volume","386"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","Mehel, Hind"],["dc.contributor.author","Emons, J."],["dc.contributor.author","Wittkoepper, Katrin"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Laemmle, Simon"],["dc.contributor.author","Seppelt, D."],["dc.contributor.author","Riedel, Michael"],["dc.contributor.author","Napiany, S."],["dc.contributor.author","Lutz, S."],["dc.contributor.author","Sossalla, Samuel Tobias"],["dc.contributor.author","Lechene, Patrick"],["dc.contributor.author","Maier, Lars S."],["dc.contributor.author","Nikolaev, Viacheslav O."],["dc.contributor.author","Zimmermann, Wolfram-Hubertus"],["dc.contributor.author","Eschenhagen, Thomas"],["dc.contributor.author","Vandecasteele, Gregoire"],["dc.contributor.author","Fischmeister, Rodolphe"],["dc.contributor.author","El-Armouche, Ali"],["dc.date.accessioned","2018-11-07T09:28:54Z"],["dc.date.available","2018-11-07T09:28:54Z"],["dc.date.issued","2013"],["dc.identifier.isi","000209476400353"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30898"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","New york"],["dc.title","Phosphodiesterase-2 is upregulated in failing hearts and blunts beta-AR mediated chronotropic and inotropic effects"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","15222"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Perera, Ruwan K."],["dc.contributor.author","Fischer, Thomas H."],["dc.contributor.author","Wagner, Michael"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Vettel, Christiane"],["dc.contributor.author","Bork, Nadja I."],["dc.contributor.author","Maier, Lars S."],["dc.contributor.author","Conti, Marco"],["dc.contributor.author","Wess, Juergen"],["dc.contributor.author","El-Armouche, Ali"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Nikolaev, Viacheslav O."],["dc.date.accessioned","2018-04-23T11:48:02Z"],["dc.date.available","2018-04-23T11:48:02Z"],["dc.date.issued","2017"],["dc.description.abstract","Atropine is a clinically relevant anticholinergic drug, which blocks inhibitory effects of the parasympathetic neurotransmitter acetylcholine on heart rate leading to tachycardia. However, many cardiac effects of atropine cannot be adequately explained solely by its antagonism at muscarinic receptors. In isolated mouse ventricular cardiomyocytes expressing a Förster resonance energy transfer (FRET)-based cAMP biosensor, we confirmed that atropine inhibited acetylcholine-induced decreases in cAMP. Unexpectedly, even in the absence of acetylcholine, after G-protein inactivation with pertussis toxin or in myocytes from M2- or M1/3-muscarinic receptor knockout mice, atropine increased cAMP levels that were pre-elevated with the β-adrenergic agonist isoproterenol. Using the FRET approach and in vitro phosphodiesterase (PDE) activity assays, we show that atropine acts as an allosteric PDE type 4 (PDE4) inhibitor. In human atrial myocardium and in both intact wildtype and M2 or M1/3-receptor knockout mouse Langendorff hearts, atropine led to increased contractility and heart rates, respectively. In vivo, the atropine-dependent prolongation of heart rate increase was blunted in PDE4D but not in wildtype or PDE4B knockout mice. We propose that inhibition of PDE4 by atropine accounts, at least in part, for the induction of tachycardia and the arrhythmogenic potency of this drug."],["dc.identifier.doi","10.1038/s41598-017-15632-x"],["dc.identifier.gro","3142321"],["dc.identifier.pmid","29123207"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14861"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13454"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/194"],["dc.language.iso","en"],["dc.notes.intern","lifescience updates Crossref Import"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation","SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz"],["dc.relation","SFB 1002 | D01: Erholung aus der Herzinsuffizienz – Einfluss von Fibrose und Transkriptionssignatur"],["dc.relation.issn","2045-2322"],["dc.relation.workinggroup","RG El-Armouche"],["dc.relation.workinggroup","RG Hasenfuß (Transition zur Herzinsuffizienz)"],["dc.relation.workinggroup","RG L. Maier (Experimentelle Kardiologie)"],["dc.relation.workinggroup","RG Nikolaev (Cardiovascular Research Center)"],["dc.relation.workinggroup","RG T. Fischer"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Atropine augments cardiac contractility by inhibiting cAMP-specific phosphodiesterase type 4"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","S349"],["dc.bibliographiccitation.journal","European Journal of Heart Failure"],["dc.bibliographiccitation.lastpage","S350"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Neef, S."],["dc.contributor.author","Brammen, Christina"],["dc.contributor.author","Brown, Joan Heller"],["dc.contributor.author","Maier, Lars. S."],["dc.contributor.author","El-Armouche, Ali"],["dc.date.accessioned","2018-11-07T09:25:42Z"],["dc.date.available","2018-11-07T09:25:42Z"],["dc.date.issued","2013"],["dc.format.extent","S14"],["dc.identifier.isi","000332489100045"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30125"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.publisher.place","Hoboken"],["dc.relation.issn","1879-0844"],["dc.relation.issn","1388-9842"],["dc.title","Genetic deletion of phosphatase inhibitor-1 versus betablocker treatment in severe CaMKIIdeltaC-induced heart failure"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","857"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Naunyn-Schmiedeberg's Archives of Pharmacology"],["dc.bibliographiccitation.lastpage","862"],["dc.bibliographiccitation.volume","390"],["dc.contributor.author","Neef, Stefan"],["dc.contributor.author","Heijman, Jordi"],["dc.contributor.author","Otte, Kristian"],["dc.contributor.author","Dewenter, Matthias"],["dc.contributor.author","Saadatmand, Ali R."],["dc.contributor.author","Meyer-Roxlau, Stefanie"],["dc.contributor.author","Antos, Christopher L."],["dc.contributor.author","Backs, Johannes"],["dc.contributor.author","Dobrev, Dobromir"],["dc.contributor.author","Wagner, Michael"],["dc.contributor.author","Maier, Lars S."],["dc.contributor.author","El-Armouche, Ali"],["dc.date.accessioned","2019-02-20T15:09:24Z"],["dc.date.available","2019-02-20T15:09:24Z"],["dc.date.issued","2017"],["dc.description.abstract","Inhibitor-1 (I-1) modulates protein phosphatase 1 (PP1) activity and thereby counteracts the phosphorylation by kinases. I-1 is downregulated and deactivated in failing hearts, but whether its role is beneficial or detrimental remains controversial, and opposing therapeutic strategies have been proposed. Overactivity of Ca2+/calmodulin-dependent protein kinase II (CaMKII) with hyperphosphorylation of ryanodine receptors (RyR2) at the CaMKII-site is recognized to be central for heart failure and arrhythmias. Using an I-1-deficient mouse line as well as transfected cell lines, we investigated the effects of acute and chronic modulation of I-1 on CaMKII activity and RyR2 phosphorylation. We demonstrate that I-1 acutely modulates CaMKII by regulating PP1 activity. However, while ablation of I-1 should thus limit CaMKII-activation, we unexpectedly found exaggerated CaMKII-activation under β-adrenergic stress upon chronic loss of I-1 in knockout mice. We unraveled that this is due to chronic upregulation of the exchange protein activated by cAMP (EPAC) leading to augmented CaMKII activation, and using computational modeling validated that an increase in EPAC expression can indeed explain our experimental findings. Interestingly, at the level of RyR2, the increase in PP1 activity more than outweighed the increase in CaMKII activity, resulting in reduced RyR phosphorylation at Ser-2814. Exaggerated CaMKII activation due to counterregulatory mechanisms upon loss of I-1 is an important caveat with respect to suggested therapeutic I-1-inhibition, as CaMKII overactivity has been heavily implicated in several cardiac pathologies."],["dc.identifier.doi","10.1007/s00210-017-1376-1"],["dc.identifier.pmid","28451724"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57608"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/165"],["dc.language.iso","en"],["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","0028-1298"],["dc.relation.issn","1432-1912"],["dc.relation.workinggroup","RG El-Armouche"],["dc.relation.workinggroup","RG L. Maier (Experimentelle Kardiologie)"],["dc.title","Chronic loss of inhibitor-1 diminishes cardiac RyR2 phosphorylation despite exaggerated CaMKII activity"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]