Mohamed, Belal A.

[["dc.bibliographiccitation.artnumber","149"],["dc.bibliographiccitation.journal","Journal of Translational Medicine"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Asif, Abdul R."],["dc.contributor.author","Schnelle, Moritz"],["dc.contributor.author","Qasim, Mohamed"],["dc.contributor.author","Khadjeh, Sara"],["dc.contributor.author","Lbik, Dawid"],["dc.contributor.author","Schott, Peter"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Toischer, Karl"],["dc.date.accessioned","2017-09-07T11:44:53Z"],["dc.date.available","2017-09-07T11:44:53Z"],["dc.date.issued","2016"],["dc.description.abstract","Background: Hemodynamic load leads to cardiac hypertrophy and heart failure. While afterload (pressure overload) induces concentric hypertrophy, elevation of preload (volume overload) yields eccentric hypertrophy and is associated with a better outcome. Here we analysed the proteomic pattern of mice subjected to short-term preload. Methods and Results: Female FVB/N mice were subjected to aortocaval shunt-induced volume overload that leads to an eccentric hypertrophy (left ventricular weight/tibia length +31 %) with sustained systolic heart function at 1 week after operation. Two-dimensional gel electrophoresis (2-DE) followed by mass spectrometric analysis showed alteration in the expression of 25 protein spots representing 21 different proteins. 64 % of these protein spots were up-regulated and 36 % of the protein spots were consistently down-regulated. Interestingly, alpha-1-antitrypsin was down-regulated, indicating higher elastin degradation and possibly contributing to the early dilatation. In addition to contractile and mitochondrial proteins, polymerase I and transcript release factor protein (PTRF) was also up-regulated, possibly contributing to the preload-induced signal transduction. Conclusions: Our findings reveal the proteomic changes of early-stage eccentric myocardial remodeling after volume overload. Induced expression of some of the respiratory chain enzymes suggests a metabolic shift towards an oxidative phosphorylation that might contribute to the favorable remodeling seen in early VO. Down-regulation of alpha-1-antitrypsin might contribute to extracellular matrix remodeling and left ventricular dilatation. We also identified PTRF as a potential signaling regulator of volume overload-induced cardiac hypertrophy."],["dc.identifier.doi","10.1186/s12967-016-0898-5"],["dc.identifier.gro","3141681"],["dc.identifier.isi","000377182700001"],["dc.identifier.pmid","27234427"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13299"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8784"],["dc.notes.intern","WoS Import 2017-03-10 / Funder: German Research Foundation [SFB1002]"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1479-5876"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Proteomic analysis of short-term preload-induced eccentric cardiac hypertrophy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","9889"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Elkenani, Manar"],["dc.contributor.author","Jakubiczka-Smorag, Joanna"],["dc.contributor.author","Buchholz, Eric"],["dc.contributor.author","Koszewa, Sabrina"],["dc.contributor.author","Lbik, Dawid"],["dc.contributor.author","Schnelle, Moritz"],["dc.contributor.author","Hasenfuss, Gerd"],["dc.contributor.author","Toischer, Karl"],["dc.date.accessioned","2019-08-06T11:25:13Z"],["dc.date.available","2019-08-06T11:25:13Z"],["dc.date.issued","2019"],["dc.description.abstract","Calcium/calmodulin-dependent protein kinase type II delta (CaMKIIδ), the predominant CaMKII isoform expressed in the heart, has been implicated in the progression of myocardial infarction- and pressure overload-induced pathological remodeling. However, the role of CaMKIIδ in volume overload (VO) has not been explored. We have previously reported an activation of CaMKII during transition to HF in long-term VO. Here, we address whether CaMKIIδ is critically involved in the mortality, myocardial remodeling, and heart failure (HF) progression in response to VO. CaMKIIδ knockout (δ-KO) and wild-type (WT) littermates were exposed to aortocaval shunt-induced VO, and the progression of adverse myocardial remodeling was assessed by serial echocardiography, histological and molecular analyses. The mortality rates during 10 weeks of VO were similar in δ-KO and WT mice. Both genotypes displayed comparable eccentric myocardial hypertrophy, altered left ventricle geometry, perturbed systolic and diastolic functions after shunt. Additionally, cardiomyocytes hypertrophy, augmented myocyte apoptosis, and up-regulation of hypertrophic genes were also not significantly different in δ-KO versus WT hearts after shunt. Therefore, CaMKIIδ signaling seems to be dispensable for the progression of VO-induced maladaptive cardiac remodeling. Accordingly, we hypothesize that CaMKIIδ-inhibition as a therapeutic approach might not be helpful in the context of VO-triggered HF."],["dc.identifier.doi","10.1038/s41598-019-46332-3"],["dc.identifier.pmid","31285482"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16358"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62306"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/281"],["dc.language.iso","en"],["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","SFB 1002 | D04: Bedeutung der Methylierung von RNA (m6A) und des Histons H3 (H3K4) in der Herzinsuffizienz"],["dc.relation","SFB 1002 | S01: In vivo und in vitro Krankheitsmodelle"],["dc.relation.eissn","2045-2322"],["dc.relation.issn","2045-2322"],["dc.relation.workinggroup","RG Hasenfuß (Transition zur Herzinsuffizienz)"],["dc.relation.workinggroup","RG Toischer (Kardiales Remodeling)"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Genetic deletion of calcium/calmodulin-dependent protein kinase type II delta does not mitigate adverse myocardial remodeling in volume-overloaded hearts"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","235"],["dc.bibliographiccitation.journal","European Journal of Heart Failure"],["dc.bibliographiccitation.lastpage","236"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Khadjeh, Sara"],["dc.contributor.author","Sossalla, Samuel T."],["dc.contributor.author","Neef, S."],["dc.contributor.author","Lehnart, Stephan E."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Toischer, Karl"],["dc.date.accessioned","2018-11-07T09:57:24Z"],["dc.date.available","2018-11-07T09:57:24Z"],["dc.date.issued","2015"],["dc.identifier.isi","000366200402357"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37149"],["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","Does leaky ryanodine receptors play any role in maladaptive remodeling after chronic mechanical stress in mice?"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4285"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Journal of Clinical Investigation"],["dc.bibliographiccitation.lastpage","4296"],["dc.bibliographiccitation.volume","127"],["dc.contributor.author","Toischer, Karl"],["dc.contributor.author","Zhu, Wuqiang"],["dc.contributor.author","Hünlich, Mark"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Khadjeh, Sara"],["dc.contributor.author","Reuter, Sean P."],["dc.contributor.author","Schäfer, Katrin"],["dc.contributor.author","Ramanujam, Deepak"],["dc.contributor.author","Engelhardt, Stefan"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.date.accessioned","2021-06-01T10:47:52Z"],["dc.date.available","2021-06-01T10:47:52Z"],["dc.date.issued","2017"],["dc.description.abstract","Induction of the cell cycle is emerging as an intervention to treat heart failure. Here, we tested the hypothesis that enhanced cardiomyocyte renewal in transgenic mice expressing cyclin D2 would be beneficial during hemodynamic overload. We induced pressure overload by transthoracic aortic constriction (TAC) or volume overload by aortocaval shunt in cyclin D2–expressing and WT mice. Although cyclin D2 expression dramatically improved survival following TAC, it did not confer a survival advantage to mice following aortocaval shunt. Cardiac function decreased following TAC in WT mice, but was preserved in cyclin D2–expressing mice. On the other hand, cardiac structure and function were compromised in response to aortocaval shunt in both WT and cyclin D2–expressing mice. The preserved function and improved survival in cyclin D2–expressing mice after TAC was associated with an approximately 50% increase in cardiomyocyte number and exaggerated cardiac hypertrophy, as indicated by increased septum thickness. Aortocaval shunt did not further impact cardiomyocyte number in mice expressing cyclin D2. Following TAC, cyclin D2 expression attenuated cardiomyocyte hypertrophy, reduced cardiomyocyte apoptosis, fibrosis, calcium/calmodulin–dependent protein kinase IIδ phosphorylation, brain natriuretic peptide expression, and sustained capillarization. Thus, we show that cyclin D2–induced cardiomyocyte renewal reduced myocardial remodeling and dysfunction after pressure overload but not after volume overload."],["dc.identifier.doi","10.1172/JCI81870"],["dc.identifier.gro","3142324"],["dc.identifier.pmid","29083322"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85743"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/192"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["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","SFB 1002 | D04: Bedeutung der Methylierung von RNA (m6A) und des Histons H3 (H3K4) in der Herzinsuffizienz"],["dc.relation","SFB 1002 | S01: In vivo und in vitro Krankheitsmodelle"],["dc.relation.eissn","1558-8238"],["dc.relation.issn","0021-9738"],["dc.relation.workinggroup","RG Hasenfuß (Transition zur Herzinsuffizienz)"],["dc.relation.workinggroup","RG Schäfer (Translationale Vaskuläre Biologie)"],["dc.relation.workinggroup","RG Toischer (Kardiales Remodeling)"],["dc.title","Cardiomyocyte proliferation prevents failure in pressure overload but not volume overload"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Der Internist"],["dc.bibliographiccitation.volume","57"],["dc.contributor.author","Lbik, D."],["dc.contributor.author","Khadjeh, Sara"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Halder, R."],["dc.contributor.author","Fischer, A."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Toischer, Karl"],["dc.date.accessioned","2018-11-07T10:15:52Z"],["dc.date.available","2018-11-07T10:15:52Z"],["dc.date.issued","2016"],["dc.format.extent","S51"],["dc.identifier.isi","000375417500098"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40906"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","New york"],["dc.relation.issn","1432-1289"],["dc.relation.issn","0020-9554"],["dc.title","Maximal resolution of the heart transcriptome with cell type specific profiling"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","362"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","European Journal of Heart Failure"],["dc.bibliographiccitation.lastpage","371"],["dc.bibliographiccitation.volume","18"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Schnelle, Moritz"],["dc.contributor.author","Khadjeh, Sara"],["dc.contributor.author","Lbik, Dawid"],["dc.contributor.author","Herwig, Melissa"],["dc.contributor.author","Linke, Wolfgang A."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Toischer, Karl"],["dc.date.accessioned","2017-09-07T11:54:33Z"],["dc.date.available","2017-09-07T11:54:33Z"],["dc.date.issued","2016"],["dc.description.abstract","AimWe have previously reported that early phase (1week) of experimental volume overload (VO) has an adaptive phenotype while wall stress-matched pressure overload (PO) is maladaptive. Here we investigate the transition from adaptation to heart failure (HF) in long-term VO. Methods and resultsFVB/N wild-type mice were subjected to VO induced by aortocaval shunt, and were followed by serial echocardiography until in vivo left ventricular ejection fraction was below <50% (13535days). Heart failure was evident from increased lung and liver weight and increased mortality compared with sham. Maladaptive remodelling resulted in significantly reduced sarcomeric titin phosphorylation (causing increased sarcomeric stiffness), whereas interstitial fibrosis was not increased. This was paralleled by re-expression of the fetal gene program, activation of calcium/calmodulin-dependent protein kinase II (CaMKII), decreased protein kinase B (Akt) phosphorylation, high oxidative stress, and increased apoptosis. Consistently, development of HF and mortality were significantly aggravated in Akt-deficient mice. ConclusionTransition to HF in VO is associated with decreased Akt and increased CaMKII signalling pathways together with increased oxidative stress and apoptosis. Lack of interstitial fibrosis together with sarcomeric titin hypophosphorylation indicates an increased stiffness at the sarcomeric but not matrix level in VO-induced HF (in contrast to PO). Transition to HF may result from myocyte loss and myocyte dysfunction owing to increased stiffness."],["dc.identifier.doi","10.1002/ejhf.465"],["dc.identifier.gro","3141701"],["dc.identifier.isi","000374308700005"],["dc.identifier.pmid","26694078"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/113"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/102"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10 / Funder: German Research Foundation DFG [SFB 1002, IRTG1816]"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation","SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz"],["dc.relation","SFB 1002 | A08: Translationale und posttranslationale Kontrolle trunkierter Titinproteine in Kardiomyozyten von Patienten mit dilatativer Kardiomyopathie"],["dc.relation","SFB 1002 | D01: Erholung aus der Herzinsuffizienz – Einfluss von Fibrose und Transkriptionssignatur"],["dc.relation.eissn","1879-0844"],["dc.relation.issn","1388-9842"],["dc.relation.workinggroup","RG Hasenfuß (Transition zur Herzinsuffizienz)"],["dc.relation.workinggroup","RG Linke (Kardiovaskuläre Physiologie)"],["dc.relation.workinggroup","RG Toischer (Kardiales Remodeling)"],["dc.rights","CC BY-NC-ND 4.0"],["dc.title","Molecular and structural transition mechanisms in long-term volume overload"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","European Journal of Heart Failure"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Kattner, Lars"],["dc.contributor.author","Guan, Kaomei"],["dc.contributor.author","Lehnart, Stephan E."],["dc.contributor.author","Luther, S."],["dc.contributor.author","Sossalla, Samuel T."],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Toischer, Karl"],["dc.date.accessioned","2018-11-07T10:24:10Z"],["dc.date.available","2018-11-07T10:24:10Z"],["dc.date.issued","2017"],["dc.format.extent","343"],["dc.identifier.isi","000401005301134"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42606"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Wiley"],["dc.publisher.place","Hoboken"],["dc.relation.issn","1879-0844"],["dc.relation.issn","1388-9842"],["dc.title","The relevant role of SR Ca leak in the development of heart failure"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Basic Research in Cardiology"],["dc.bibliographiccitation.volume","115"],["dc.contributor.author","Khadjeh, Sara"],["dc.contributor.author","Hindmarsh, Vanessa"],["dc.contributor.author","Weber, Frederike"],["dc.contributor.author","Cyganek, Lukas"],["dc.contributor.author","Vidal, Ramon O."],["dc.contributor.author","Torkieh, Setare"],["dc.contributor.author","Streckfuss-Bömeke, Katrin"],["dc.contributor.author","Lbik, Dawid"],["dc.contributor.author","Tiburcy, Malte"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Bonn, Stefan"],["dc.contributor.author","Toischer, Karl"],["dc.contributor.author","Hasenfuss, Gerd"],["dc.date.accessioned","2020-12-10T14:10:26Z"],["dc.date.available","2020-12-10T14:10:26Z"],["dc.date.issued","2020"],["dc.description.abstract","Heart failure is a major health problem worldwide with a significant morbidity and mortality rate. Although studied extensively in animal models, data from patients at the compensated disease stage are lacking. We sampled myocardium biopsies from aortic stenosis patients with compensated hypertrophy and moderate heart failure and used transcriptomics to study the transition to failure. Sequencing and comparative analysis of analogous samples of mice with transverse aortic constriction identified 25 candidate genes with similar regulation in response to pressure overload, reflecting highly conserved molecular processes. The gene cysteine-rich secretory protein LCCL domain containing 1 (CRISPLD1) is upregulated in the transition to failure in human and mouse and its function is unknown. Homology to ion channel regulatory toxins suggests a role in Ca2+ cycling. CRISPR/Cas9-mediated loss-of-function leads to dysregulated Ca2+ handling in human-induced pluripotent stem cell-derived cardiomyocytes. The downregulation of prohypertrophic, proapoptotic and Ca2+-signaling pathways upon CRISPLD1-KO and its upregulation in the transition to failure implicates a contribution to adverse remodeling. These findings provide new pathophysiological data on Ca2+ regulation in the transition to failure and novel candidate genes with promising potential for therapeutic interventions."],["dc.identifier.doi","10.1007/s00395-020-0784-4"],["dc.identifier.pmid","32146539"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70757"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/350"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz"],["dc.relation","SFB 1002 | C04: Fibroblasten-Kardiomyozyten Interaktion im gesunden und erkrankten Herzen: Mechanismen und therapeutische Interventionen bei Kardiofibroblastopathien"],["dc.relation","SFB 1002 | D01: Erholung aus der Herzinsuffizienz – Einfluss von Fibrose und Transkriptionssignatur"],["dc.relation","SFB 1002 | D04: Bedeutung der Methylierung von RNA (m6A) und des Histons H3 (H3K4) in der Herzinsuffizienz"],["dc.relation.workinggroup","RG Cyganek (Stem Cell Unit)"],["dc.relation.workinggroup","RG Hasenfuß (Transition zur Herzinsuffizienz)"],["dc.relation.workinggroup","RG Tiburcy (Stem Cell Disease Modeling)"],["dc.relation.workinggroup","RG Toischer (Kardiales Remodeling)"],["dc.rights","CC BY 4.0"],["dc.title","CRISPLD1: a novel conserved target in the transition to human heart failure"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","273"],["dc.bibliographiccitation.journal","European Heart Journal"],["dc.bibliographiccitation.lastpage","274"],["dc.bibliographiccitation.volume","37"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Richter, C."],["dc.contributor.author","Neef, S."],["dc.contributor.author","Lbik, D."],["dc.contributor.author","Khadjeh, Sara"],["dc.contributor.author","Sossalla, Samuel T."],["dc.contributor.author","Lehnart, Stephan Elmar"],["dc.contributor.author","Luther, S."],["dc.contributor.author","Hasenfuss, Gerd"],["dc.contributor.author","Toischer, Karl"],["dc.date.accessioned","2018-11-07T10:14:44Z"],["dc.date.available","2018-11-07T10:14:44Z"],["dc.date.issued","2016"],["dc.format.extent","423"],["dc.identifier.isi","000377107502228"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40675"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.publisher.place","Hoboken"],["dc.relation.conference","Congress of the European-Society-of-Cardiology (ESC)"],["dc.relation.eventlocation","Rome, ITALY"],["dc.relation.issn","1879-0844"],["dc.relation.issn","1388-9842"],["dc.title","Role of sarcoplasmic reticulum calcium leak in 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","178"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Cardiovascular Research"],["dc.bibliographiccitation.lastpage","187"],["dc.bibliographiccitation.volume","117"],["dc.contributor.author","Schnelle, Moritz"],["dc.contributor.author","Sawyer, Iain"],["dc.contributor.author","Anilkumar, Narayana"],["dc.contributor.author","Mohamed, Belal A."],["dc.contributor.author","Richards, Daniel A."],["dc.contributor.author","Toischer, Karl"],["dc.contributor.author","Zhang, Min"],["dc.contributor.author","Catibog, Norman"],["dc.contributor.author","Sawyer, Greta"],["dc.contributor.author","Mongue-Din, Héloïse"],["dc.contributor.author","Schröder, Katrin"],["dc.contributor.author","Hasenfuss, Gerd"],["dc.contributor.author","Shah, Ajay M."],["dc.date.accessioned","2021-04-14T08:30:10Z"],["dc.date.available","2021-04-14T08:30:10Z"],["dc.date.issued","2019"],["dc.description.abstract","Aims\r\n\r\nChronic pressure or volume overload induce concentric vs. eccentric left ventricular (LV) remodelling, respectively. Previous studies suggest that distinct signalling pathways are involved in these responses. NADPH oxidase-4 (Nox4) is a reactive oxygen species-generating enzyme that can limit detrimental cardiac remodelling in response to pressure overload. This study aimed to assess its role in volume overload-induced remodelling.\r\nMethods and results\r\n\r\nWe compared the responses to creation of an aortocaval fistula (Shunt) to induce volume overload in Nox4-null mice (Nox4−/−) vs. wild-type (WT) littermates. Induction of Shunt resulted in a significant increase in cardiac Nox4 mRNA and protein levels in WT mice as compared to Sham controls. Nox4−/− mice developed less eccentric LV remodelling than WT mice (echocardiographic relative wall thickness: 0.30 vs. 0.27, P < 0.05), with less LV hypertrophy at organ level (increase in LV weight/tibia length ratio of 25% vs. 43%, P < 0.01) and cellular level (cardiomyocyte cross-sectional area: 323 µm2 vs. 379 μm2, P < 0.01). LV ejection fraction, foetal gene expression, interstitial fibrosis, myocardial capillary density, and levels of myocyte apoptosis after Shunt were similar in the two genotypes. Myocardial phospho-Akt levels were increased after induction of Shunt in WT mice, whereas levels decreased in Nox4−/− mice (+29% vs. −21%, P < 0.05), associated with a higher level of phosphorylation of the S6 ribosomal protein (S6) and the eIF4E-binding protein 1 (4E-BP1) in WT compared to Nox4−/− mice. We identified that Akt activation in cardiac cells is augmented by Nox4 via a Src kinase-dependent inactivation of protein phosphatase 2A.\r\nConclusion\r\n\r\nEndogenous Nox4 is required for the full development of eccentric cardiac hypertrophy and remodelling during chronic volume overload. Nox4-dependent activation of Akt and its downstream targets S6 and 4E-BP1 may be involved in this effect."],["dc.identifier.doi","10.1093/cvr/cvz331"],["dc.identifier.pmid","31821410"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83130"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/333"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation","SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz"],["dc.relation","SFB 1002 | D01: Erholung aus der Herzinsuffizienz – Einfluss von Fibrose und Transkriptionssignatur"],["dc.relation","SFB 1002 | D04: Bedeutung der Methylierung von RNA (m6A) und des Histons H3 (H3K4) in der Herzinsuffizienz"],["dc.relation.eissn","1755-3245"],["dc.relation.issn","0008-6363"],["dc.relation.workinggroup","RG Hasenfuß (Transition zur Herzinsuffizienz)"],["dc.relation.workinggroup","RG Toischer (Kardiales Remodeling)"],["dc.rights","CC BY 4.0"],["dc.title","NADPH oxidase-4 promotes eccentric cardiac hypertrophy in response to volume overload"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]