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Mitophagy: A Potential Target for Pressure Overload-Induced Cardiac Remodelling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2849985. [PMID: 36204518 PMCID: PMC9532135 DOI: 10.1155/2022/2849985] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 07/16/2022] [Accepted: 08/11/2022] [Indexed: 11/18/2022]
Abstract
The pathological mechanisms underlying cardiac remodelling and cardiac dysfunction caused by pressure overload are poorly understood. Mitochondrial damage and functional dysfunction, including mitochondrial bioenergetic disorder, oxidative stress, and mtDNA damage, contribute to heart injury caused by pressure overload. Mitophagy, an important regulator of mitochondrial homeostasis and function, is triggered by mitochondrial damage and participates in the pathological process of cardiovascular diseases. Recent studies indicate that mitophagy plays a critical role in the pressure overload model, but evidence on the causal relationship between mitophagy abnormality and pressure overload-induced heart injury is inconclusive. This review summarises the mechanism, role, and regulation of mitophagy in the pressure overload model. It also pays special attention to active compounds that may regulate mitophagy in pressure overload, which provide clues for possible clinical applications.
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Rank N, Stoiber L, Nasser M, Tanacli R, Stehning C, Knierim J, Schoenrath F, Pieske B, Falk V, Kuehne T, Meyer A, Kelle S. Assessment of 10-Year Left-Ventricular-Remodeling by CMR in Patients Following Aortic Valve Replacement. Front Cardiovasc Med 2021; 8:645693. [PMID: 33829049 PMCID: PMC8019709 DOI: 10.3389/fcvm.2021.645693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/16/2021] [Indexed: 11/13/2022] Open
Abstract
Aims: Aortic valve replacement (AVR) may result in reverse cardiac remodeling. We aimed to assess long-term changes in the myocardium following AVR by Cardiac Magnetic Resonance Imaging (CMR). Methods: We prospectively observed the long-term left ventricular (LV) function and structure of 27 patients with AVR [n = 19 with aortic stenosis (AS); n = 8 with aortic regurgitation (AR)] by CMR. Patients underwent CMR before, as well as 1, 5, and 10 years after AVR. We evaluated clinical parameters, LV volumes, mass, geometry, ejection fraction (EF), global myocardial longitudinal strain (MyoGLS), global myocardial circular strain (MyoGCS), hemodynamic forces (HemForces), and Late Gadolinium Enhancement (LGE). Results: The median of LVMI, EDVI, and ESVI decreased in both groups. Patients with AR had higher initial values of EDVI and ESVI and showed a more prominent initial reduction. In AS, MyoGLS improved already after 1 year and remained constant afterward, whereas, in AR no improvement of MyoGLS was found. MyoGCS remained unchanged in the AS group but deteriorated in the AR group over 10 years. Ejection fraction (EF) was higher in AS patients compared to AR 10 years post-AVR. Late gadolinium enhancement (LGE) could be found more frequently in AS patients. Conclusion: CMR was well suited to investigate myocardial changes over a 10-year follow up period in patients with aortic valve disease. Regarding the long-term functional changes following AVR, patients with AR seemed to benefit less from AVR compared to AS patients. Fibrosis was more common in AS, but this did not reflect functional evolution in these patients. Close monitoring seems indispensable to avoid irreversible structural damage of the heart and to perform AVR at an appropriate stage.
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Affiliation(s)
- Nina Rank
- Department of Internal Medicine & Cardiology, German Heart Center Berlin, Berlin, Germany
| | - Lukas Stoiber
- Department of Internal Medicine & Cardiology, German Heart Center Berlin, Berlin, Germany.,Department of Cardiothoracic & Vascular Surgery, German Heart Center Berlin, Berlin, Germany
| | - Mithal Nasser
- Department of Internal Medicine & Cardiology, German Heart Center Berlin, Berlin, Germany
| | - Radu Tanacli
- Department of Internal Medicine & Cardiology, German Heart Center Berlin, Berlin, Germany
| | | | - Jan Knierim
- Department of Cardiothoracic & Vascular Surgery, German Heart Center Berlin, Berlin, Germany
| | - Felix Schoenrath
- Department of Cardiothoracic & Vascular Surgery, German Heart Center Berlin, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Burkert Pieske
- Department of Internal Medicine & Cardiology, German Heart Center Berlin, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany.,Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Volkmar Falk
- Department of Cardiothoracic & Vascular Surgery, German Heart Center Berlin, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany.,Department of Cardiovascular Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Department of Health Science and Technology, Eidgenössische Technische Hochschule Zurich, Zurich, Switzerland
| | - Titus Kuehne
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany.,Institute for Cardiovascular Imaging Science and Computational Modelling, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Alexander Meyer
- Department of Cardiothoracic & Vascular Surgery, German Heart Center Berlin, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Sebastian Kelle
- Department of Internal Medicine & Cardiology, German Heart Center Berlin, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany.,Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
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Lindsey ML, Ma Y, Flynn ER, Winniford MD, Hall ME, DeLeon-Pennell KY. Identifying the molecular and cellular signature of cardiac dilation following myocardial infarction. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1845-1852. [PMID: 31109452 PMCID: PMC6530589 DOI: 10.1016/j.bbadis.2018.09.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/04/2018] [Accepted: 09/17/2018] [Indexed: 11/17/2022]
Abstract
Establishing molecular and cellular indicators that reflect the extent of dilation of the left ventricle (LV) after myocardial infarction (MI) may improve diagnostic and prognostic capabilities. We queried the Mouse Heart Attack Research Tool (mHART) 1.0 for day 7 post-MI mice (age 3-9 months, untreated males and females) with serial echocardiographic data at days 0, 1, and 7 (n = 51). Mice were classified into two subgroups determined by a median fold change of 1.6 in end-diastolic dimensions (EDD) normalized to pre-MI values; n = 26 fell below (moderate; mean of 1.42 ± 0.01) and n = 25 fell above this cut-off (extreme; mean of 1.79 ± 0.01; p < 0.001 vs. moderate). Plasma proteomic profiling of 34 analytes measured at day 7 post-MI from male mice (n = 12 moderate and 12 extreme) were evaluated as the test dataset, and receiver operating curve (ROC) analysis was used to assess strength of biomarkers. Females (n = 6 moderate and 9 extreme) were used as the validation dataset. Both by t-test and characteristic (ROC) curve analysis, lower macrophage inflammatory protein-1 gamma (MIP-1γ), lymphotactin, and granulocyte chemotactic protein-2 (GCP-2) were identified as plasma indicators for dilation status (p < 0.05 for all). Macrophage numbers were decreased and complement C5, laminin 1, and Ccr8 gene levels were significantly higher in the LV infarcts of the extreme dilation group (p < 0.05 for all). A composite panel including plasma MIP-1γ, lymphotactin, and GCP-2, and LV infarct Ccr8 and macrophage numbers strongly mirrored LV dilation status (AUC = 0.92; p < 0.0001). Using the mHART 1.0 database, we determined that a failure to mount sufficient macrophage-mediated inflammation was indicative of exacerbated LV dilation.
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Affiliation(s)
- Merry L. Lindsey
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
- Research Service, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, 1500 E Woodrow Wilson Ave Jackson MS 39216
- Division of Cardiology, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
| | - Yonggang Ma
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
| | - Elizabeth R. Flynn
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
| | - Michael D. Winniford
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
- Division of Cardiology, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
| | - Michael E. Hall
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
- Division of Cardiology, University of Mississippi Medical Center, 2500 N State St Jackson MS 39216
| | - Kristine Y. DeLeon-Pennell
- Research Service, Ralph H. Johnson Veterans Affairs Medical Center, 109 Bee St, Charleston, SC 29401
- Division of Cardiology, Medical University of South Carolina, 30 Courtenay Dr Charleston SC 29425
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