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Wang B, Jeyakumar V, Tawk L, Shihata W, Kiriazis H, Donner D, Kemp-Harper B, Kaye D. Therapeutic Potential of a Novel Anti-Inflammatory and Anti-Fibrotic Agent, VCP979, for Obesity-Induced Heart Failure With Preserved Ejection Fraction. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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2
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Sergienko N, Kiriazis H, Donner D, Matsumoto A, Luo J, Molendijk J, Parker B, McMullen J, Weeks K. Adopting a Phosphoproteomics Approach to Investigate a Role for Protein Phosphatase 2A (PP2A) Regulatory Subunit B55α in Cardiac β-Adrenergic Receptor Signalling. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Magaye R, Savira F, Xiong X, Donner D, Kiriazis H, Brown A, Huang L, Mellet N, Huynh K, Meikle P, Reid C, Flynn B, Kaye D, Liew D, Wang B. Des-1 Inhibition Attenuated Cardiac Remodelling in a Mouse Model of Ischaemia Reperfusion. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Bass-Stringer S, Donner D, Kiriazis H, Brown A, Gregorevic P, May C, Bernardo B, Thomas C, Weeks K, McMullen J. Generation and Characterisation of Novel PI3K-Based Gene Therapies for the Treatment of Heart Failure. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Richart A, Khalaji M, Reddy M, Alt K, Kiriazis H, Gille A, Kingwell B. 087 Blockade of VEGF-B Improves Cardiac Function after Myocardial Infarction in Insulin-Resistant Mice. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Sergienko N, Donner D, Kiriazis H, McMullen J, Weeks K. 094 Characterisation of Novel Knockout Mouse Models to Investigate the Role of B55α in the Heart. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Du XJ, Zhao WB, Lu Q, Nguyen MN, Ziemann M, Su Y, Kiriazis H, Sadoshima J, Hu HY. 1183Beta-Adrenoceptor activation increases cardiac galectin-3 levels via the hippo signaling pathway. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Galectin-3 (Gal-3) is a clinical biomarker for risk of cardiovascular disease and a disease mediator forming a therapeutic target. However, the mechanism(s) that regulate cardiac expression of Gal-3 remains unknown. Activation of the sympatho-β-adrenergic system is a hallmark of heart disease, but the relationship of βAR activation and cardiac content of Gal-3 remains unknown.
Purpose
To determine the role of βAR activation in regulating cardiac Gal-3 level and the responsible mechanism focusing on the Hippo signalling pathway.
Methods
Wild-type and Gal-3 gene deleted (Gal3-KO) mice were used. To test the role of the Hippo pathway, we used transgenic (TG) mouse strains with cardiac overexpression of mammalian-20-like sterile kinase 1 (Mst1, mammalian orthology of Drosophila Hippo kinase) either in wild-type form (TG-Mst1) or dominative-negative kinase dead mutant form (TG-dnMst1). Effects of β-antagonist (isoprenaline, ISO) and antagonists were determined. We measured phosphorylation (Ser127) of YAP as a transcription co-regulator acting as the main signal output of the Hippo pathway.
Results
In wild-type mice, treatment with ISO led to a time- and dose-dependent increase in cardiac expression of Gal-3 (Fig. A) accompanied by elevated circulating Gal-3 levels (Fig. B). ISO treatment stimulated cardiac expression of Mst1 and YAP hyper-phosphorylation (i.e. inactivation, Fig. C), indicating activation of the Hippo signalling. These effects of ISO were inhibited by β-blockers (propranolol, Prop; carvedilol, Carv; Fig. D,E). Relative to non-TG controls, ISO-induced expression of Gal-3 was inhibited by 75% in TG-dnMst1 mice (inactivated Mst1), but exaggerated by 7-fold in TG-Mst1 mice (activated Mst1). Mst1-TG mice had a 45-fold increase in Gal-3 content, YAP hyper-phosphorylation and enhanced pro-fibrotic signaling. In Mst1-TG mice, whilst blood Gal-3 level was unchanged, treatment with ISO (6 mg, 2 days) evoked a marked increase in cardiac and blood Gal-3 levels. Using rat cardiomyoblasts, we showed that ISO-mediated Mst1 expression and YAP phosphorylation were PKA-dependent and that siRNA-mediated YAP knockdown led to Gal-3 upregulation. The role of Gal-3 in mediating ISO-induced cardiomyopathy was examined by treating wild-type and Gal3-KO mice with ISO (30 mg/kg, 7 days). ISO-treated wild-type mice had 8-fold increase in cardiac Gal-3, ventricular dysfunction, fibrosis, hypertrophy and activated inflammatory or fibrotic signalling. All these changes, except hypertrophy, were abolished by Gal3-KO.
beta-AR regulates galectin-3
Conclusion
βAR stimulation increases cardiac expression of Gal-3 through activation of the Hippo signalling pathway. This is accompanied by elevated circulating Gal-3 level. βAR antagonists inhibited βAR-Mst1 (Hippo) signalling and cardiac Gal-3 expression, actions likely contributing to the overall efficacy of β-blockers.
Acknowledgement/Funding
NHMRC of Australia; Nature Science Fund of China
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Affiliation(s)
- X.-J Du
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - W B Zhao
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - Q Lu
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - M N Nguyen
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - M Ziemann
- Deakin University, School of Life and Environmental Sciences, Melbourne, Australia
| | - Y Su
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - H Kiriazis
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - J Sadoshima
- New Jersey Medical School, Department of Cell Biology and Molecular Medicine Rutgers, Newark, United States of America
| | - H.-Y Hu
- Southwest Hospital, The Third Military Medical University, Department of Cardiology, Chongqing City, China
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Bass-Stringer S, Bottrel L, Harmawan C, Yildiz S, Donner D, Kiriazis H, Weeks K, Thomas C, Bernardo B, McMullen J. Investigating the Safety of Enhanced Cardiac Phosphoinositide 3-Kinase [PI3K (p110alpha)] as a Prospective Therapeutic Gene. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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De Blasio M, Tate M, Prakoso D, Willis A, Deo M, Walsh J, Cohen C, Rofe A, Peng S, Qin C, Kiriazis H, Donner D, Watson A, Ritchie R. Defining the Characteristics of a More Clinically Relevant Mouse Model of Type-2 Diabetes (T2D)-Induced Cardiomyopathy. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Prakoso D, Kiriazis H, Tate M, Qian H, Deo M, Parry L, Gregorevic P, Du X, Chatham J, De Blasio M, Ritchie R. 5213Manipulation of cardiac O-GlcNAc modification alters cardiac function and remodelling in the setting of diabetic cardiomyopathy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.5213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- D Prakoso
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - H Kiriazis
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - M Tate
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - H Qian
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - M Deo
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - L Parry
- University of Melbourne, Melbourne, Australia
| | - P Gregorevic
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - X Du
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - J Chatham
- University of Alabama Birmingham, Birmingham, United States of America
| | - M De Blasio
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - R Ritchie
- Baker Heart and Diabetes Institute, Melbourne, Australia
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Tate M, Willis AM, Deo M, De Blasio MJ, Prakoso D, Kiriazis H, Du XJ, Qian HW, McGee S, Gregorevic P, Ritchie RH. P2841Cardiac-selective targeting of histone deacetylase 4 to limit experimental diabetic cardiomyopathy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Tate
- Baker Heart and Diabetes Institute, Heart Failure Pharmacology, Melbourne, Australia
| | - A M Willis
- Baker Heart and Diabetes Institute, Heart Failure Pharmacology, Melbourne, Australia
| | - M Deo
- Baker Heart and Diabetes Institute, Heart Failure Pharmacology, Melbourne, Australia
| | - M J De Blasio
- Baker Heart and Diabetes Institute, Heart Failure Pharmacology, Melbourne, Australia
| | - D Prakoso
- Baker Heart and Diabetes Institute, Heart Failure Pharmacology, Melbourne, Australia
| | - H Kiriazis
- Baker Heart and Diabetes Institute, Experimental Cardiology Laboratory, Melbourne, Australia
| | - X.-J Du
- Baker Heart and Diabetes Institute, Experimental Cardiology Laboratory, Melbourne, Australia
| | - H.-W Qian
- Baker Heart and Diabetes Institute, Muscle Research and Therapeutics Laboratory, Melbourne, Australia
| | - S McGee
- Deakin University, School of Medicine, Melbourne, Australia
| | - P Gregorevic
- Baker Heart and Diabetes Institute, Muscle Research and Therapeutics Laboratory, Melbourne, Australia
| | - R H Ritchie
- Baker Heart and Diabetes Institute, Heart Failure Pharmacology, Melbourne, Australia
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Du XJ, Nguyen MN, Ziemann M, Kiriazis H, Su Y, Rafehi H, Donner D, Zhao WB, Dart AM, Sadoshima J, McMullen JR, El-Osta A. P941Galectin-3 deficiency ameliorates cardiac fibrosis and remodelling in transgenic mice with dilated cardiomyopathy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- X.-J Du
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - M N Nguyen
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - M Ziemann
- Monash University, Department of Diabetes, Melbourne, Australia
| | - H Kiriazis
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - Y Su
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - H Rafehi
- Monash University, Department of Diabetes, Melbourne, Australia
| | - D Donner
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - W B Zhao
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - A M Dart
- The Alfred Hospital, Alfred Heart Centre, Melbourne, Australia
| | - J Sadoshima
- New Jersey Medical School, Department of Cell Biology and Molecular Medicine Rutgers, New Jersey, United States of America
| | - J R McMullen
- Baker IDI Heart and Diabetes Institute, Experimental Cardiology, Melbourne, Australia
| | - A El-Osta
- Monash University, Department of Diabetes, Melbourne, Australia
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Tham Y, Bernardo B, Huynh K, Ooi J, Gao X, Kiriazis H, Meikle P, McMullen J. Lipidomic Profiles of the Heart and Circulation in Response to Exercise Versus Cardiac Pathology. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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De Blasio M, Huynh N, Dubrana L, Prakoso D, Qin C, Tate M, Deo M, Oseghale O, Kiriazis H, Du X, Ritchie R. Progression of Markers Contributing to Cardiomyopathy in a Mouse Model of Type 1 Diabetes. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Weeks K, Kiriazis H, Tham Y, Bernardo B, Cemerlang N, McMullen J. Forkhead Box Protein O1 Regulates the Hypertrophic Response to Exercise but is not Required for Phosphoinositide 3-Kinase-Dependent Physiological Cardiac Hypertrophy. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tate M, Oseghale O, De Blasio M, Prakoso D, Qian H, Kiriazis H, Du X, Gregorevic P, Ritchie R. P4461Cardiac-selective bone morphogenetic protein 7 (BMP7) gene therapy to target cardiac fibrosis in a mouse model of diabetic cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Nguyen M, Kiriazis H, Thomas Z, Su Y, Gao X, Sadoshima J, McMullen J, Du X. Genetic Inhibition of Galectin-3 Suppressed Cardiac Fibrosis and Improved Function in a Mouse Model of Dilated Cardiomyopathy. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Prakoso D, De Blasio M, Kiriazis H, Qian H, Deo M, Jap E, Weeks K, Parry L, Du X, Gregorevic P, McMullen J, Ritchie R. Cardiac Remodelling and Inflammation Associated with Diabetic Cardiomyopathy is Mitigated by Phosphoinositide 3-Kinase P110α Gene Delivery. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Prakoso D, Kiriazis H, Tate M, Qian H, Deo M, Parry L, Gregorevic P, Du X, Chatham J, De Blasio M, Ritchie R. Using Gene Delivery to Target Cardiac O-GlcNAc Protein Modifications in the Diabetic Heart: Impact on Left Ventricular (LV) Function. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bernardo B, Weeks K, Pongsukwechkul T, Gao X, Kiriazis H, Tham Y, Du X, Gregorevic P, McMullen J. Gene Delivery of Medium Chain Acyl-coenzyme A Dehydrogenase (MCAD) Induces Physiological Cardiac Hypertrophy and Protects Against Pathological Remodelling. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Qin C, Rosli S, Kahlberg N, Jelinic M, Leo C, Deo M, Kiriazis H, Yang Y, Du X, Parry L, Ritchie R. Annexin-A1 Deficient Mice Exhibit Exaggerated Cardiovascular Dysfunction in Type 1 Diabetes. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nguyen M, Su Y, Kiriazis H, Zhang M, Gao X, McMullen J, Du X. Cardiac Galectin-3 Contributes to Fibrotic Cardiomyopathy Due to Transgenic Beta-adrenergic Activation. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Prakoso D, De Blasio M, Kiriazis H, Qian H, Deo M, Jap E, Weeks K, Parry L, Du X, Gregorevic P, McMullen J, Ritchie R. Phosphoinositide 3-Kinase p110alpha Gene Therapy Rescues Diabetic Cardiomyopathy in a Type 2 Diabetic Model. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Du X, Gao X, Moore S, Liu Y, Wang X, Han L, Zhang M, Su Y, Tsai A, Lambert G, Kiriazis H, Gao W, Dart A. Splenic Release of Platelets Contributes to Increased Circulating Platelet Size and Inflammation After Myocardial Infarction (MI). Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gao X, Tsai A, Su Y, Moore S, Kiriazis H, Du X. Inhibition of the renin-angiotensin system (RAS) prevents inflammation associated cardiac rupture post myocardial infarction (MI). Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Richart A, Heywood S, Kiriazis H, Du X, Siebel A, Kingwell B. High-density lipoprotein infusion reduces inflammation and improves post-ischaemic heart function in healthy and insulin resistant mice. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Prakoso D, DeBlasio M, Kiriazis H, Rosli S, Qin C, Jun Du X, McMullen J, Richie R. Phosphoinositide 3 kinase p110a (rAAV6-caPI3K) gene therapy attenuates diabetic cardiomyopathy in mice. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Qin C, Finlayson S, Rosli S, De Blasio M, Thomas C, AI-Sharea A, Murphy A, Kiriazis H, Yang Y, Morand E, Du X, Gao X, Ritchie R. Annexin-a1 deficiency exaggerates cardiac injury following myocardial infarction (MI) in vivo. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Qin C, Cao N, Gao X, Rosli S, Kiriazis H, Du X, Ritchie R. Targeting Ischaemia-reperfusion (I-R) Injury in the Intact Heart with Annexin-A1 (ANX-A1) Mimetics. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Bernardo B, Gao X, Tham Y, Lin R, Kiriazis H, Du X, McMullen J. The Therapeutic Potential of microRNA-652 for the Treatment of Heart Failure. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ritchie RH, Love JE, Huynh K, Bernardo BC, Henstridge DC, Kiriazis H, Tham YK, Sapra G, Qin C, Cemerlang N, Boey EJH, Jandeleit-Dahm K, Du XJ, McMullen JR. Enhanced phosphoinositide 3-kinase(p110α) activity prevents diabetes-induced cardiomyopathy and superoxide generation in a mouse model of diabetes. Diabetologia 2012; 55:3369-81. [PMID: 23001375 DOI: 10.1007/s00125-012-2720-0] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2012] [Accepted: 08/10/2012] [Indexed: 12/12/2022]
Abstract
AIMS/HYPOTHESIS Diabetic cardiomyopathy is characterised by diastolic dysfunction, oxidative stress, fibrosis, apoptosis and pathological cardiomyocyte hypertrophy. Phosphoinositide 3-kinase (PI3K)(p110α) is a cardioprotective kinase, but its role in the diabetic heart is unknown. The aim of this study was to assess whether PI3K(p110α) plays a critical role in the induction of diabetic cardiomyopathy, and whether increasing PI3K(p110α) activity in the heart can prevent the development of cardiac dysfunction in a setting of diabetes. METHODS Type 1 diabetes was induced with streptozotocin in adult male cardiac-specific transgenic mice with increased PI3K(p110α) activity (constitutively active PI3K [p110α], caPI3K] or decreased PI3K(p110α) activity (dominant-negative PI3K [p110α], dnPI3K) and non-transgenic (Ntg) mice for 12 weeks. Cardiac function, histological and molecular analyses were performed. RESULTS Diabetic Ntg mice displayed diastolic dysfunction and increased cardiomyocyte size, expression of atrial and B-type natriuretic peptides (Anp, Bnp), fibrosis and apoptosis, as well as increased superoxide generation and increased protein kinase C β2 (PKCβ2), p22 ( phox ) and apoptosis signal-regulating kinase 1 (Ask1) expression. Diabetic dnPI3K mice displayed an exaggerated cardiomyopathy phenotype compared with diabetic Ntg mice. In contrast, diabetic caPI3K mice were protected against diastolic dysfunction, pathological cardiomyocyte hypertrophy, fibrosis and apoptosis. Protection in diabetic caPI3K mice was associated with attenuation of left ventricular superoxide generation, attenuated Anp, Bnp, PKCβ2, Ask1 and p22 ( phox ) expression, and elevated AKT. Further, in cardiomyocyte-like cells, increased PI3K(p110α) activity suppressed high glucose-induced superoxide generation and enhanced mitochondrial function. CONCLUSIONS/INTERPRETATION These results demonstrate that reduced PI3K activity accelerates the development of diabetic cardiomyopathy, and that enhanced PI3K(p110α) activity can prevent adverse cardiac remodelling and dysfunction in a setting of diabetes.
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Affiliation(s)
- R H Ritchie
- Baker IDI Heart and Diabetes Institute, St Kilda Rd Central, Melbourne, VIC 8008, Australia.
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Huynh K, Kiriazis H, Du XJ, Love JE, Jandeleit-Dahm KA, Forbes JM, McMullen JR, Ritchie RH. Coenzyme Q10 attenuates diastolic dysfunction, cardiomyocyte hypertrophy and cardiac fibrosis in the db/db mouse model of type 2 diabetes. Diabetologia 2012; 55:1544-53. [PMID: 22374176 DOI: 10.1007/s00125-012-2495-3] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Accepted: 01/16/2012] [Indexed: 01/02/2023]
Abstract
AIMS/HYPOTHESIS An increase in the production of reactive oxygen species is commonly thought to contribute to the development of diabetic cardiomyopathy. This study aimed to assess whether administration of the antioxidant coenzyme Q(10) would protect the diabetic heart against dysfunction and remodelling, using the db/db mouse model of type 2 diabetes. Furthermore, we aimed to compare the efficacy of coenzyme Q(10) to that of the ACE inhibitor ramipril. METHODS Six-week-old non-diabetic db/+ mice and diabetic db/db mice received either normal drinking water or water supplemented with coenzyme Q(10) for 10 weeks. Endpoint cardiac function was assessed by echocardiography and catheterisation. Ventricular tissue was collected for histology, gene expression and protein analysis. RESULTS Untreated db/db diabetic mice exhibited hyperglycaemia, accompanied by diastolic dysfunction and adverse structural remodelling, including cardiomyocyte hypertrophy, myocardial fibrosis and increased apoptosis. Systemic lipid peroxidation and myocardial superoxide generation were also elevated in db/db mice. Coenzyme Q(10) and ramipril treatment reduced superoxide generation, ameliorated diastolic dysfunction and reduced cardiomyocyte hypertrophy and fibrosis in db/db mice. Phosphorylation of Akt, although depressed in untreated db/db mice, was restored with coenzyme Q(10) administration. We postulate that preservation of cardioprotective Akt signalling may be a mechanism by which coenzyme Q(10)-treated db/db mice are protected from pathological cardiac hypertrophy. CONCLUSIONS/INTERPRETATION These data demonstrate that coenzyme Q(10) attenuates oxidative stress and left ventricular diastolic dysfunction and remodelling in the diabetic heart. Addition of coenzyme Q(10) to the current therapy used in diabetic patients with diastolic dysfunction warrants further investigation.
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Affiliation(s)
- K Huynh
- Baker IDI Heart and Diabetes Institute, PO Box 6492, St Kilda Road Central, Melbourne, Victoria 8008, Australia
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Kiriazis H, Jennings N, Davern P, Lambert G, Su Y, Pang T, Du X, La Greca L, Head G, Hannan A, Du X. Enhanced Parasympathetic Nervous Activity in Huntington's Disease Transgenic Mice. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Xu Q, Dalic A, Fang L, Kiriazis H, Ritchie RH, Sim K, Gao XM, Drummond G, Sarwar M, Zhang YY, Dart AM, Du XJ. Myocardial oxidative stress contributes to transgenic β₂-adrenoceptor activation-induced cardiomyopathy and heart failure. Br J Pharmacol 2011; 162:1012-28. [PMID: 20955367 DOI: 10.1111/j.1476-5381.2010.01043.x] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND PURPOSE While maintaining cardiac performance, chronic β-adrenoceptor activation eventually exacerbates the progression of cardiac remodelling and failure. We examined the adverse signalling pathways mediated by nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and reactive oxygen species (ROS) after chronic β₂-adrenoceptor activation. EXPERIMENTAL APPROACH Mice with transgenic β₂-adrenoceptor overexpression (β₂-TG) and non-transgenic littermates were either untreated or treated with an antioxidant (N-acetylcysteine, NAC) or NADPH oxidase inhibitors (apocynin, diphenyliodonium). Levels of ROS, phosphorylated p38 mitogen-activated protein kinase (MAPK), pro-inflammatory cytokines and collagen content in the left ventricle (LV) and LV function were measured and compared. KEY RESULTS β₂-TG mice showed increased ROS production, phosphorylation of p38 MAPK and heat shock protein 27 (HSP27), expression of pro-inflammatory cytokines and collagen, and progressive ventricular dysfunction. β₂-adrenoceptor stimulation similarly increased ROS production and phosphorylation of p38 MAPK and HSP27 in cultured cardiomyocytes. Treatment with apocynin, diphenyliodonium or NAC reduced phosphorylation of p38 MAPK and HSP27 in both cultured cardiomyocytes and the LV of β₂-TG mice. NAC treatment (500 mg·kg⁻¹ ·day⁻¹) for 2 weeks eliminated the up-regulated expression of pro-inflammatory cytokines and collagen in the LV of β₂-TG mice. Chronic NAC treatment to β₂-TG mice from 7 to 10 months of age largely prevented progression of ventricular dilatation, preserved contractile function (fractional shortening 37 ± 5% vs. 25 ± 3%, ejection fraction 52 ± 5% vs. 32 ± 4%, both P < 0.05), reduced cardiac fibrosis and suppressed matrix metalloproteinase activity. CONCLUSION AND IMPLICATIONS β₂-adrenoceptor stimulation provoked NADPH oxidase-derived ROS production in the heart. Elevated ROS activated p38 MAPK and contributed significantly to cardiac inflammation, remodelling and failure.
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Affiliation(s)
- Q Xu
- Baker IDI Heart and Diabetes Institute, Melbourne, Australia.
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Kiriazis H, Jennings N, Davern P, Su Y, Pang T, Du X, Lambert G, Head G, Hannan A, Du X. Autonomic Neurocardiac Dysregulation in R6/1 Huntington's Disease Transgenic Mice. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ritchie R, Khammy M, Bowden M, Irvine J, Andrews K, Huynh K, Kiriazis H, Kaye D, Venardos K. Diabetes-Induced Cardiac Dysfunction is Rescued by Endothelial Cationic Amino Acid Transporter 1 (CAT-1) Overexpression in Mice. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ritchie R, Love J, Kiriazis H, Huynh K, Cemerlang N, Tan J, Julius T, Jennings N, Jandeleit-Dahm K, Du X, McMullen J. Cardiac-Specific Activation of Phosphoinositide 3-Kinase p110á (PI3Ká) Protects Against Diabetes-Induced Diastolic Dysfunction In Vivo: Role for ROS Suppression? Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Bernardo B, Lin R, Gao X, Kiriazis H, Woodcock E, Matthews V, Febbraio M, Du X, McMullen J. The Potential of Manipulating PI3K Targeted MicroRNAs to Treat Heart Failure. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Huynh K, Kiriazis H, Du X, Jandeleit-Dahm K, Bowden M, Forbes J, McMullen J, Ritchie R. Coenzyme Q10 Inhibits Cardiomyocyte Hypertrophy, Myocardial Fibrosis and Diastolic Dysfunction in a Mouse Model of Type 2 Diabetes. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Shan L, Gao X, Kiriazis H, Yang L, Su Y, Dart A, Du X. Platelet Aggregation Within the Infarcted Myocardium is a Key Pathological Component Post-Infarct Contributing to Mechanical Complications. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Xu Q, Jennings N, Kiriazis H, Dart A, Du X. Cardiac Angiogenesis Promoted by β2-adrenergic Activation is Crucially Involved in Maintaining Cardiac Function. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Pretorius L, Kiriazis H, Ming Z, Cemerlang N, Tan J, Du X, McMullen J. Identification of the Molecular Mechanisms Responsible for the Cardioprotective Properties of Phosphoinositide-3-kinase (p110α). Heart Lung Circ 2009. [DOI: 10.1016/j.hlc.2009.05.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Weeks K, Kiriazis H, Cemerlang N, Tan J, Ming Z, Daly R, Du X, McMullen J. The Role of Grb14 in IGF1–PI3K Signalling and Cardiac Hypertrophy: A Potential Target for the Treatment of Heart Failure? Heart Lung Circ 2009. [DOI: 10.1016/j.hlc.2009.05.459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Pretorius L, Du X, Woodcock E, Kiriazis H, Lin R, Marasco S, Head G, Dart A, Jennings G, McMullen J. Cardiac Insulin Resistance Due to Reduced Phosphoinositide-3-kinase (p110α) Activation Increases the Heart's Susceptibility to Atrial Fibrillation. Heart Lung Circ 2009. [DOI: 10.1016/j.hlc.2009.05.299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xu Q, Fang L, Kiriazis H, Gao X, Ritchie R, Dart A, Du X. Role of β-Adrenergic Stimulated Oxidative Stress and Inflammation in Cardiac Hypertrophy and Failure. Heart Lung Circ 2007. [DOI: 10.1016/j.hlc.2007.06.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xu Q, Fang L, Kiriazis H, Gao X, Ritchie R, Dart A, Du X. Role of β-Adrenergic Stimulated Oxidative Stress and Inflammation in Cardiac Hypertrophy and Failure. Heart Lung Circ 2007. [DOI: 10.1016/j.hlc.2007.06.513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ritchie R, Cao A, Kiriazis H, Xu Q, Du XJ, Kaye D. Atrial natriuretic peptide ameloriates diabetic cardiomyopathy in insulin-deficient rats in vivo. J Mol Cell Cardiol 2006. [DOI: 10.1016/j.yjmcc.2006.06.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sato Y, Schmidt AG, Kiriazis H, Hoit BD, Kranias EG. Letter to the editor: Re-evaluation of heart failure in transgenic mice with impaired SR Ca2+ release. J Mol Cell Cardiol 2001; 33:1757-9. [PMID: 11549354 DOI: 10.1006/jmcc.2001.1430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Sato Y, Kiriazis H, Yatani A, Schmidt AG, Hahn H, Ferguson DG, Sako H, Mitarai S, Honda R, Mesnard-Rouiller L, Frank KF, Beyermann B, Wu G, Fujimori K, Dorn GW, Kranias EG. Rescue of contractile parameters and myocyte hypertrophy in calsequestrin overexpressing myocardium by phospholamban ablation. J Biol Chem 2001; 276:9392-9. [PMID: 11115498 DOI: 10.1074/jbc.m006889200] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Cardiac-specific overexpression of murine cardiac calsequestrin results in depressed cardiac contractile parameters, low Ca(2+)-induced Ca(2+) release from sarcoplasmic reticulum (SR) and cardiac hypertrophy in transgenic mice. To test the hypothesis that inhibition of phospholamban activity may rescue some of these phenotypic alterations, the calsequestrin overexpressing mice were cross-bred with phospholamban-knockout mice. Phospholamban ablation in calsequestrin overexpressing mice led to reversal of the depressed cardiac contractile parameters in Langendorff-perfused hearts or in vivo. This was associated with increases of SR Ca(2+) storage, assessed by caffeine-induced Na(+)-Ca(2+) exchanger currents. The inactivation time of the L-type Ca(2+) current (I(Ca)), which has an inverse correlation with Ca(2+)-induced SR Ca(2+) release, and the relation between the peak current density and half-inactivation time were also normalized, indicating a restoration in the ability of I(Ca) to trigger SR Ca(2+) release. The prolonged action potentials in calsequestrin overexpressing cardiomyocytes also reversed to normal upon phospholamban ablation. Furthermore, ablation of phospholamban restored the expression levels of atrial natriuretic factor and alpha-skeletal actin mRNA as well as ventricular myocyte size. These results indicate that attenuation of phospholamban function may prevent or overcome functional and remodeling defects in hypertrophied hearts.
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Affiliation(s)
- Y Sato
- Department of Pharmacology and Cell Biophysics, and Division of Cardiology, University of Cincinnati, Ohio 45267, USA
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Abstract
1. A myothermic technique has been used to investigate the mechanics and energetics of left ventricular papillary muscles from 6-, 15-, 22- and 27-32-month-old Sprague-Dawley rats. 2. There was a significant increase in the left ventricular mass to body mass (LVM:BM) ratio in the senescent. 27-32-month-old group of animals compared with the younger animals (P<0.05). 3. The maximum stress developed in the senescent groups was reduced by almost 40% in comparison with the stress developed by the 6-, 15- and 22-month-old groups (P<0.001). The mean rise time, half relaxation time and half width were increased significantly (P<0.05) in the 22-month-old group but, unexpectedly, this effect was not seen in the senescent group. 4. Heat production per beat versus total stress relationships were obtained in two different ways to determine the magnitude of the activation heat and the isometric economy (given by the slope of the relationship). The activation heat was not significantly different between groups with either method, but there was a significant increase (P<0.001) in the economy with which stress was developed in the senescent group in comparison with the 6- and 15-month-old groups. 5. A combination of forskolin (2.5-6.5 micromol/L) and high Ca2+ (7.5 mmol/L) was used to increase the energy usage per beat. In the 6- and 15-month-old groups, these agents caused a four-fold increase in the activation heat magnitude compared with a less than two-fold increase in the 22-month-old and senescent groups (P<0.001). There was no effect of forskolin/high calcium on the slope of the heat:total stress relationship. 6. The data suggest that, under conditions known to increase cardiac contractility, there is a reduced ability to cycle calcium in the 22-month-old and senescent groups relative to the young adult 6-month-old and adult 15-month-old groups.
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Affiliation(s)
- H Kiriazis
- Department of Physiology, Monash University, Clayton, Victoria, Australia
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