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Chen PH, Lee TW, Liu SH, Huynh TV, Chung CC, Yeh YH, Kao YH, Chen YJ. Lithium downregulates phosphorylated acetyl‑CoA carboxylase 2 and attenuates mitochondrial fatty acid utilization and oxidative stress in cardiomyocytes. Exp Ther Med 2024; 27:126. [PMID: 38414784 PMCID: PMC10895620 DOI: 10.3892/etm.2024.12413] [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: 09/13/2023] [Accepted: 01/11/2024] [Indexed: 02/29/2024] Open
Abstract
Acetyl-CoA carboxylase 2 plays a crucial role in regulating mitochondrial fatty acid oxidation in cardiomyocytes. Lithium, a monovalent cation known for its cardioprotective potential, has been investigated for its influence on mitochondrial bioenergetics. The present study explored whether lithium modulated acetyl-CoA carboxylase 2 and mitochondrial fatty acid metabolism in cardiomyocytes and the potential therapeutic applications of lithium in alleviating metabolic stress. Mitochondrial bioenergetic function, fatty acid oxidation, reactive oxygen species production, membrane potential and the expression of proteins involved in fatty acid metabolism in H9c2 cardiomyocytes treated with LiCl for 48 h was measured by using a Seahorse extracellular flux analyzer, fluorescence microscopy and western blotting. Small interfering RNA against glucose transporter type 4 was transfected into H9c2 cardiomyocytes for 48 h to induce metabolic stress mimicking insulin resistance. The results revealed that LiCl at a concentration of 0.3 mM (but not at a concentration of 0.1 or 1.0 mM) upregulated the expression of phosphorylated (p-)glycogen synthase kinase-3 beta and downregulated the expression of p-acetyl-CoA carboxylase 2 but did not affect the expression of adenosine monophosphate-activated protein kinase or calcineurin. Cotreatment with TWS119 (8 µM) and LiCl (0.3 mM) downregulated p-acetyl-CoA carboxylase 2 expression to a similar extent as did treatment with TWS119 (8 µM) alone. Moreover, LiCl (0.3 mM) inhibited mitochondrial fatty acid oxidation, improved coupling efficiency and the cellular respiratory control ratio, hindered reactive oxygen species production and proton leakage and restored mitochondrial membrane potential in glucose transporter type 4 knockdown-H9c2 cardiomyocytes. These findings suggested that low therapeutic levels of lithium can downregulate p-acetyl-CoA carboxylase 2, thus reducing mitochondrial fatty acid oxidation and oxidative stress in cardiomyocytes.
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Affiliation(s)
- Pao-Huan Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Department of Psychiatry, Taipei Medical University Hospital, Taipei 11031, Taiwan, R.O.C
| | - Ting-Wei Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan, R.O.C
| | - Shuen-Hsin Liu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Division of Cardiology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan, R.O.C
| | - Tin Van Huynh
- International PhD Program in Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Department of Interventional Cardiology, Thong Nhat Hospital, Ho Chi Minh City 700000, Vietnam
| | - Cheng-Chih Chung
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan, R.O.C
| | - Yung-Hsin Yeh
- Division of Cardiology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan, R.O.C
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan, R.O.C
| | - Yu-Hsun Kao
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Department of Medical Education and Research, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan, R.O.C
| | - Yi-Jen Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan, R.O.C
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan, R.O.C
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Zhu J, Wang H, Yan C, Li B, Chen B. Ultrasound-targeted semaglutide-loaded PEG-nanoliposomes microbubble destruction protects diabetic cardiomyopathy by activating PI3K/Akt/Nrf2 signaling pathway. Heliyon 2023; 9:e19873. [PMID: 37809373 PMCID: PMC10559235 DOI: 10.1016/j.heliyon.2023.e19873] [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: 06/22/2023] [Revised: 09/02/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
Objective To investigate the ameliorative effect of Semaglutide-loaded PEG-nanoliposomes (Sem-PEG-lips) combined with ultrasound-targeted microbubble destruction (UTMD) on streptozotocin (STZ)-induced diabetic cardiomyopathy (DCM) in rodents and its potential mechanisms. Methods Sem-PEG-lips were prepared by the reverse phase evaporation method. Fifty STZ-induced diabetic rats were randomly divided into DCM model group, Sem or Sem-PEG-lips alone treatment group, UTMD + Sem group and UTMD + Sem-PEG-lips group (n = 10), respectively, and used the healthy rats as normal control. During the 12-week intervention, the weight and blood glucose levels of all rats were recorded. Myocardial injury and fibrosis were observed by using H&E and Masson staining. The activity of antioxidant enzymes and the expression levels of oxidative stress-related signaling pathway markers in myocardial tissues were measured by ELISA and western blotting method, respectively. Results Compared with DCM rats, the body weight and blood glucose levels of those in the UTMD + Sem-PEG-lips group were significantly increased and decreased, respectively (both p < 0.05). The results of H&E and Masson staining showed that myocardial fibrosis and apoptosis were both significantly improved in combination group (both p < 0.001). Further results of ELISA and Western blot analysis showed that the activity of antioxidant enzymes in ones received combination therapy were significantly higher than that in DCM model group (all p < 0.001), and the expression of PI3K/Akt/Nrf2 signaling pathway related proteins were significantly up-regulated (all p < 0.001), and all these changes were reversed by the treatment of PI3K inhibitor. results. Conclusion UTMD combined Sem-PEG-lips can reduce the oxidative stress of myocardial tissue in DCM rats by activating PI3K/Akt/Nrf2 signaling pathway, thereby improving diabetic myocardial injury.
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Affiliation(s)
- Jiawei Zhu
- Department of Ultrasound, Ningbo Zhenhai People's Hospital, Ningbo 315202, Zhejiang province, PR China
| | - Huiyang Wang
- Department of Ultrasound Medicine, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, Zhejiang province, PR China
| | - Chunyang Yan
- Department of Ultrasound, Ningbo Zhenhai People's Hospital, Ningbo 315202, Zhejiang province, PR China
| | - Bin Li
- Department of Ultrasound, Ningbo Zhenhai People's Hospital, Ningbo 315202, Zhejiang province, PR China
| | - Bin Chen
- Department of Nephrology, Ningbo Zhenhai People's Hospital, Ningbo 315202, Zhejiang province, PR China
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Zhao Y, Pan B, Lv X, Chen C, Li K, Wang Y, Liu J. Ferroptosis: roles and molecular mechanisms in diabetic cardiomyopathy. Front Endocrinol (Lausanne) 2023; 14:1140644. [PMID: 37152931 PMCID: PMC10157477 DOI: 10.3389/fendo.2023.1140644] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/28/2023] [Indexed: 05/09/2023] Open
Abstract
Diabetic cardiomyopathy (DCM) is a serious complication of type 1 and type 2 diabetes, which leads to the aggravation of myocardial fibrosis, disorders involving systolic and diastolic functions, and increased mortality of patients with diabetes through mechanisms such as glycolipid toxicity, inflammatory response, and oxidative stress. Ferroptosis is a form of iron-dependent regulatory cell death that is attributed to the accumulation of lipid peroxides and an imbalance in redox regulation. Increased production of lipid reactive oxygen species (ROS) during ferroptosis promotes oxidative stress and damages myocardial cells, leading to myocardial systolic and diastolic dysfunction. Overproduction of ROS is an important bridge between ferroptosis and DCM, and ferroptosis inhibitors may provide new targets for the treatment of patients with DCM.
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Affiliation(s)
- Yangting Zhao
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Binjing Pan
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Xiaoyu Lv
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Chongyang Chen
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Kai Li
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Yawen Wang
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Jingfang Liu
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
- *Correspondence: Jingfang Liu,
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Lin J, Duan J, Wang Q, Xu S, Zhou S, Yao K. Mitochondrial Dynamics and Mitophagy in Cardiometabolic Disease. Front Cardiovasc Med 2022; 9:917135. [PMID: 35783853 PMCID: PMC9247260 DOI: 10.3389/fcvm.2022.917135] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 05/20/2022] [Indexed: 12/17/2022] Open
Abstract
Mitochondria play a key role in cellular metabolism. Mitochondrial dynamics (fusion and fission) and mitophagy, are critical to mitochondrial function. Fusion allows organelles to share metabolites, proteins, and mitochondrial DNA, promoting complementarity between damaged mitochondria. Fission increases the number of mitochondria to ensure that they are passed on to their offspring during mitosis. Mitophagy is a process of selective removal of excess or damaged mitochondria that helps improve energy metabolism. Cardiometabolic disease is characterized by mitochondrial dysfunction, high production of reactive oxygen species, increased inflammatory response, and low levels of ATP. Cardiometabolic disease is closely related to mitochondrial dynamics and mitophagy. This paper reviewed the mechanisms of mitochondrial dynamics and mitophagy (focus on MFN1, MFN2, OPA1, DRP1, and PINK1 proteins) and their roles in diabetic cardiomyopathy, myocardial infarction, cardiac hypertrophy, heart failure, atherosclerosis, and obesity.
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Affiliation(s)
- Jianguo Lin
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jinlong Duan
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qingqing Wang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Siyu Xu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Beijing University of Chinese Medicine, Beijing, China
| | - Simin Zhou
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Kuiwu Yao
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Eye Hospital China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Kuiwu Yao
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Wang Y, Cai F, Li G, Tao Y. Novel dual glucagon-like peptide-1/ glucose-dependent insulinotropic polypeptide receptor agonist attenuates diabetes and myocardial injury through inhibiting hyperglycemia, inflammation and oxidative stress in rodent animals. Bioengineered 2022; 13:9184-9196. [PMID: 35383532 PMCID: PMC9161981 DOI: 10.1080/21655979.2022.2051859] [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] [Indexed: 12/03/2022] Open
Abstract
This study was aimed to evaluate the therapeutic effects and potent mechanisms of a novel GLP-1/GIP dual agonist on hyperglycemia and myocardial injury in diabetic mice. Novel dual-receptor agonists were designed and then evaluated via in vitro receptor activation assays. Acute hypoglycemic effects were assessed in diabetic mice induced by intraperitoneal injection of streptozotocin. Chronic effects of dual-receptor agonists on diabetes as well as diabetic cardiomyopathy were investigated in DCM model mice. Effects of the in vitro coculture of dual-receptor agonists with or without signaling pathway inhibitors on the cell viability and apoptosis of primary cardiomyocytes under a high-glucose state were assessed via MTT and western blotting methods to investigate the probable mechanism. AP5 exhibited balanced activities of dual-receptor activation in vitro and improved hypoglycemic ability in diabetic mice. Moreover, chronic treatment of AP5 achieved the prominently improved efficacy in reversing the deteriorative diabetic disorders and reducing the myocardial injury markers in DCM mice. Moreover, AP5 also inhibited the apoptosis and improved the survival rate of primary cardiomyocytes under a high-glucose state via increasing the expression levels of antiapoptotic proteins and inhibiting the release of apoptotic proteins, respectively, as well as activating the AMPK/PI3K/Akt signaling pathway. In conclusion, the dual GLP-1/GIP receptor agonist, AP5, can effectively improve diabetic symptoms and exert therapeutic effects on DCM via activating the AMPK/PI3K/Akt pathway, reducing the ROS production, oxidative stress and inflammatory markers in the rodent DCM model.Abbreviation: Diabetes mellitus, DM; diabetic cardiomyopathy, DCM; streptozotocin, STZ; glucagon-like peptide-1, GLP-1; malondialdehyde, MDA; glucose-dependent insulinotropic polypeptide, GIP; creatine kinase, CK; diabetic cardiomyopathy, DCM; serum superoxide dismutase; SOD; total superoxide disumutase, T-SOD; Methyl Thiazolyl Tetrazolium, MTT; lactate dehydrogenase; LDH; Adenosine Monophosphate-Activated Protein Kinase, AMPK; Dulbecco’s modified Eagle medium, DMEM; Fetal Bovine Serum, FBS; Reactive Oxygen Species, ROS; Glyceraldehyde-phosphate dehydrogenase, GAPDH; Surface Plasmon Resonance, SPR; Ethylene Diamine Tetraacetic Acid, EDTA; Interleukin-1β, IL-1β; Phosphoinositol 3-kinase, PI3K; Tumor necrosis factor, TNF-α; Renin-angiotensin-aldosterone system, RAAS; Glucose transporter, GLUT; Dipeptidyl peptidase-IV, DPP-IV; oxygen free radicals, OFR;
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Affiliation(s)
- Ying Wang
- Department of Cardiology, Nantong Third People's Hospital and the Third People's Hospital Affiliated to Nantong University, Nantong, People's Republic of China
| | - Fei Cai
- Department of Cardiology, Nantong Third People's Hospital and the Third People's Hospital Affiliated to Nantong University, Nantong, People's Republic of China
| | - Gang Li
- Department of Cardiology, Nantong Third People's Hospital and the Third People's Hospital Affiliated to Nantong University, Nantong, People's Republic of China
| | - Yong Tao
- Department of Intensive Care Unit, Tumor Hospital Affiliated to Nantong University, Nantong Tumor Hospital, Nantong, People's Republic of China
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Gomes KP, Jadli AS, de Almeida LGN, Ballasy NN, Edalat P, Shandilya R, Young D, Belke D, Shearer J, Dufour A, Patel VB. Proteomic Analysis Suggests Altered Mitochondrial Metabolic Profile Associated With Diabetic Cardiomyopathy. Front Cardiovasc Med 2022; 9:791700. [PMID: 35310970 PMCID: PMC8924072 DOI: 10.3389/fcvm.2022.791700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 01/24/2022] [Indexed: 01/04/2023] Open
Abstract
Diabetic cardiomyopathy (DbCM) occurs independently of cardiovascular diseases or hypertension, leading to heart failure and increased risk for death in diabetic patients. To investigate the molecular mechanisms involved in DbCM, we performed a quantitative proteomic profiling analysis in the left ventricle (LV) of type 2 diabetic mice. Six-month-old C57BL/6J-lepr/lepr (db/db) mice exhibited DbCM associated with diastolic dysfunction and cardiac hypertrophy. Using quantitative shotgun proteomic analysis, we identified 53 differentially expressed proteins in the LVs of db/db mice, majorly associated with the regulation of energy metabolism. The subunits of ATP synthase that form the F1 domain, and Cytochrome c1, a catalytic core subunit of the complex III primarily responsible for electron transfer to Cytochrome c, were upregulated in diabetic LVs. Upregulation of these key proteins may represent an adaptive mechanism by diabetic heart, resulting in increased electron transfer and thereby enhancement of mitochondrial ATP production. Conversely, diabetic LVs also showed a decrease in peptide levels of NADH dehydrogenase 1β subcomplex subunit 11, a subunit of complex I that catalyzes the transfer of electrons to ubiquinone. Moreover, the atypical kinase COQ8A, an essential lipid-soluble electron transporter involved in the biosynthesis of ubiquinone, was also downregulated in diabetic LVs. Our study indicates that despite attempts by hearts from diabetic mice to augment mitochondrial ATP energetics, decreased levels of key components of the electron transport chain may contribute to impaired mitochondrial ATP production. Preserved basal mitochondrial respiration along with the markedly reduced maximal respiratory capacity in the LVs of db/db mice corroborate the association between altered mitochondrial metabolic profile and cardiac dysfunction in DbCM.
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Affiliation(s)
- Karina P. Gomes
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- Libin Cardiovascular Institute, Calgary, AB, Canada
| | - Anshul S. Jadli
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- Libin Cardiovascular Institute, Calgary, AB, Canada
| | - Luiz G. N. de Almeida
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- McCaig Institute for Bone and Joint Health, Calgary, AB, Canada
| | - Noura N. Ballasy
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- Libin Cardiovascular Institute, Calgary, AB, Canada
| | - Pariya Edalat
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- Libin Cardiovascular Institute, Calgary, AB, Canada
| | - Ruchita Shandilya
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- Libin Cardiovascular Institute, Calgary, AB, Canada
| | - Daniel Young
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- McCaig Institute for Bone and Joint Health, Calgary, AB, Canada
| | - Darrell Belke
- Libin Cardiovascular Institute, Calgary, AB, Canada
- Department of Cardiac Sciences, Cumming School of Medicine, Calgary, AB, Canada
| | - Jane Shearer
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Antoine Dufour
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- McCaig Institute for Bone and Joint Health, Calgary, AB, Canada
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Vaibhav B. Patel
- Department of Physiology and Pharmacology, Cumming School of Medicine, Calgary, AB, Canada
- Libin Cardiovascular Institute, Calgary, AB, Canada
- *Correspondence: Vaibhav B. Patel ;
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Zhang X, Qu H, Yang T, Kong X, Zhou H. Regulation and functions of NLRP3 inflammasome in cardiac fibrosis: Current knowledge and clinical significance. Biomed Pharmacother 2021; 143:112219. [PMID: 34560540 DOI: 10.1016/j.biopha.2021.112219] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/11/2021] [Accepted: 09/16/2021] [Indexed: 12/18/2022] Open
Abstract
Cardiac fibrosis can lead to heart failure, arrhythmia, and sudden cardiac death, representing one of the leading causes of death due to cardiovascular diseases. Cardiac fibrosis involves several multifactorial processes that cannot be effectively controlled by the available therapies. Therefore, current research has focused on the development of novel drugs that can be used to prevent cardiac fibrosis. Recent studies on the functions of inflammasome have provided an in-depth understanding of the regulatory functions of inflammasome in cardiac fibrosis. This review summarizes the latest research on the functions of the NLRP3 inflammasome in various cardiovascular diseases. The latest findings indicate that the NLRP3 inflammasome mediates several inflammatory responses and is associated with pyroptosis, mitochondrial regulation, and myofibroblast differentiation in cardiac fibrosis. These novel findings provide insight into the vital role of the NLRP3 inflammasome in the pathogenesis of cardiac fibrosis, which can be used to identify new targets for its prevention and treatment.
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Affiliation(s)
- Xiaoqing Zhang
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine,Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huiyan Qu
- Department of Cardiovascular Disease, ShuGuang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Tao Yang
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine,Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China; Department of Cardiovascular Disease, ShuGuang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaoni Kong
- Central Laboratory, ShuGuang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Zhou
- Institute of Cardiovascular Disease of Integrated Traditional Chinese and Western Medicine,Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China; Department of Cardiovascular Disease, ShuGuang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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8
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Wang Y, Yu K, Zhao C, Zhou L, Cheng J, Wang DW, Zhao C. Follistatin Attenuates Myocardial Fibrosis in Diabetic Cardiomyopathy via the TGF-β-Smad3 Pathway. Front Pharmacol 2021; 12:683335. [PMID: 34385917 PMCID: PMC8353454 DOI: 10.3389/fphar.2021.683335] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 06/23/2021] [Indexed: 01/19/2023] Open
Abstract
Follistatin (FST) is an endogenous protein that irreversibly inhibits TGF-β superfamily members and plays an anti-fibrotic role in other diseases. However, the role of FST in diabetic cardiomyopathy remains unclear. In this study, we investigated the effects of FST on diabetic cardiomyopathy. The expression of FST was downregulated in the hearts of db/db mice. Remarkably, overexpressing FST efficiently protected against cardiac dysfunction. In addition, overexpression of FST promoted cardiac hypertrophy with an unchanged expression of atrial natriuretic peptide (ANP) and the ratio of myosin heavy chain-β/myosin heavy chain-α (MYH7/MYH6). Furthermore, FST reduced cardiac fibrosis and the production of reactive oxygen species (ROS), and enhanced matrix metallopeptidase 9 (MMP9) activities in db/db mouse hearts. We also observed that overexpressing FST decreased the level of transforming growth factor beta (TGF-β) superfamily members and the phosphorylation of Smad3; consistently, in vitro experiments also verified the above results. Our findings revealed the cardioprotective role of FST in attenuating diabetic cardiomyopathy through its anti-fibrotic effects through the TGF-β–Smad3 pathway and provided a promising therapeutic strategy for diabetic cardiomyopathy.
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Affiliation(s)
- Yinhui Wang
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kun Yu
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chengcheng Zhao
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ling Zhou
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia Cheng
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dao Wen Wang
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunxia Zhao
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Mitochondrial health is enhanced in rats with higher vs. lower intrinsic exercise capacity and extended lifespan. NPJ Aging Mech Dis 2021; 7:1. [PMID: 33398019 PMCID: PMC7782588 DOI: 10.1038/s41514-020-00054-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 11/24/2020] [Indexed: 12/03/2022] Open
Abstract
The intrinsic aerobic capacity of an organism is thought to play a role in aging and longevity. Maximal respiratory rate capacity, a metabolic performance measure, is one of the best predictors of cardiovascular- and all-cause mortality. Rats selectively bred for high-(HCR) vs. low-(LCR) intrinsic running-endurance capacity have up to 31% longer lifespan. We found that positive changes in indices of mitochondrial health in cardiomyocytes (respiratory reserve, maximal respiratory capacity, resistance to mitochondrial permeability transition, autophagy/mitophagy, and higher lipids-over-glucose utilization) are uniformly associated with the extended longevity in HCR vs. LCR female rats. Cross-sectional heart metabolomics revealed pathways from lipid metabolism in the heart, which were significantly enriched by a select group of strain-dependent metabolites, consistent with enhanced lipids utilization by HCR cardiomyocytes. Heart–liver–serum metabolomics further revealed shunting of lipidic substrates between the liver and heart via serum during aging. Thus, mitochondrial health in cardiomyocytes is associated with extended longevity in rats with higher intrinsic exercise capacity and, probably, these findings can be translated to other populations as predictors of outcomes of health and survival.
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Wang L, Cai Y, Jian L, Cheung CW, Zhang L, Xia Z. Impact of peroxisome proliferator-activated receptor-α on diabetic cardiomyopathy. Cardiovasc Diabetol 2021; 20:2. [PMID: 33397369 PMCID: PMC7783984 DOI: 10.1186/s12933-020-01188-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 12/02/2020] [Indexed: 12/21/2022] Open
Abstract
The prevalence of cardiomyopathy is higher in diabetic patients than those without diabetes. Diabetic cardiomyopathy (DCM) is defined as a clinical condition of abnormal myocardial structure and performance in diabetic patients without other cardiac risk factors, such as coronary artery disease, hypertension, and significant valvular disease. Multiple molecular events contribute to the development of DCM, which include the alterations in energy metabolism (fatty acid, glucose, ketone and branched chain amino acids) and the abnormalities of subcellular components in the heart, such as impaired insulin signaling, increased oxidative stress, calcium mishandling and inflammation. There are no specific drugs in treating DCM despite of decades of basic and clinical investigations. This is, in part, due to the lack of our understanding as to how heart failure initiates and develops, especially in diabetic patients without an underlying ischemic cause. Some of the traditional anti-diabetic or lipid-lowering agents aimed at shifting the balance of cardiac metabolism from utilizing fat to glucose have been shown inadequately targeting multiple aspects of the conditions. Peroxisome proliferator-activated receptor α (PPARα), a transcription factor, plays an important role in mediating DCM-related molecular events. Pharmacological targeting of PPARα activation has been demonstrated to be one of the important strategies for patients with diabetes, metabolic syndrome, and atherosclerotic cardiovascular diseases. The aim of this review is to provide a contemporary view of PPARα in association with the underlying pathophysiological changes in DCM. We discuss the PPARα-related drugs in clinical applications and facts related to the drugs that may be considered as risky (such as fenofibrate, bezafibrate, clofibrate) or safe (pemafibrate, metformin and glucagon-like peptide 1-receptor agonists) or having the potential (sodium–glucose co-transporter 2 inhibitor) in treating DCM.
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Affiliation(s)
- Lin Wang
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China
| | - Yin Cai
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China.,Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, SAR, China
| | - Liguo Jian
- Department of Cardiology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chi Wai Cheung
- Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China
| | - Liangqing Zhang
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.
| | - Zhengyuan Xia
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China. .,Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China.
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11
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Zhang X, Hao Y. Beneficial Effects of Echinacoside on Diabetic Cardiomyopathy in Diabetic Db/Db Mice. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:5575-5587. [PMID: 33376302 PMCID: PMC7755380 DOI: 10.2147/dddt.s276972] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/10/2020] [Indexed: 12/31/2022]
Abstract
Purpose In this study, we investigated the protective effects and mechanism of action of echinacoside (ECH) from cistanche tubulosa extract in cardiomyocytes of db/db diabetic mice. Methods Twenty healthy male db/db mice aged 8 weeks were randomly divided into db/db+ECH (n=10, ECH, 300 mg/(kg/d)), db/db (n=10, saline), and db/m control groups (n=9). Mice were monitored weekly for diet and activity. Mice were injected with 2% of pentobarbital sodium in week 10 and executed. Weight and free blood glucose (FBG) were measured weekly. Echocardiographs were used to detect cardiac function. HE staining, Sudan II staining, Masson’s trichrome staining and Tunel assays were used to evaluate myocardial tissue pathological changes, collagen fiber deposition, lipid accumulation and apoptosis rates in cardiomyocytes, respectively. Western blot and RT-PCR analysis were used to detect the expression of components of the PPAR-α/M-CPT-1 and p53/p38MAPK signaling axis. Results Compared to db/db mice, ECH groups showed lower blood glucose and lipid levels. Deterioration in cardiac function was also delayed following ECH treatment. Histopathological analysis showed that ECH significantly improved myocardial tissue in db/db mice, including reduced intercellular spaces, regular arrangements, improved extracellular matrix deposition, and reduced lipid accumulation. ECH also significantly reduced oxidative stress levels in myocardial tissue in db/db mice. Moreover, ECH inhibited PPAR-α/M-CPT-1 signaling, downregulated CD36, and upregulated glucose transporter type 4 (GLUT-4) expression in db/db mouse models of DCM. ECH also inhibited p53/p38MAPK signaling, downregulated caspase-3 and caspase-8, and upregulated Bcl-2/Bax in db/db mouse models of DCM. Conclusion ECH displays protective effects in DCM, including the inhibition of cardiac apoptosis and oxidative stress, and improved lipid metabolism in cardiomyocytes. ECH also inhibits cardiac apoptosis through its regulation of p53/p38MAPK signaling, and prevents lipid accumulation through suppression of the PPAR-α/M-CPT-1 signaling axis.
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Affiliation(s)
- Xiang Zhang
- Department of Geriatrics, Renmin Hospital of Wuhan University, Hubei, People's Republic of China
| | - Yarong Hao
- Department of Geriatrics, Renmin Hospital of Wuhan University, Hubei, People's Republic of China
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12
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The effect of nutraceuticals on multiple signaling pathways in cardiac fibrosis injury and repair. Heart Fail Rev 2020; 27:321-336. [PMID: 32495263 DOI: 10.1007/s10741-020-09980-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Cardiac fibrosis is one of the most common pathological conditions caused by different heart diseases, including myocardial infarction and diabetic cardiomyopathy. Cardiovascular disease is one of the major causes of mortality worldwide. Cardiac fibrosis is caused by different processes, including inflammatory reactions and oxidative stress. The process of fibrosis begins by changing the balance between production and destruction of extracellular matrix components and stimulating the proliferation and differentiation of cardiac fibroblasts. Many studies have focused on finding drugs with less adverse effects for the treatment of cardiovascular disease. Some studies show that nutraceuticals are effective in preventing and treating diseases, including cardiovascular disease, and that they can reduce the risk. However, big clinical studies to prove the therapeutic properties of all these substances and their adverse effects are lacking so far. Therefore, in this review, we tried to summarize the knowledge on pathways and mechanisms of several nutraceuticals which have shown their usefulness in the prevention of cardiac fibrosis.
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13
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Abstract
FGF21 (fibroblast growth factor 21) is a regulator of metabolism and performs an important role in glucose and lipid metabolism and the maintenance of energy balance. FGF21 is principally expressed in the liver, but it can also be found in the pancreas, skeletal muscle, and adipose tissue. It is known that levels of serum FGF21 are significantly elevated in obese, insulin-resistant patients, and those with metabolic syndrome. Elevated levels of FGF21 in serum during the early stages of various metabolic diseases are considered a compensatory response by the organism. Therefore, FGF21 is considered a hormone in response to stress and an early diagnostic marker of disease. Diabetic cardiomyopathy is a special type of cardiac complication, characterized as a chronic myocardial disorder caused by diabetes. The pathological process includes increased oxidative stress, energy metabolism in myocardial cells, an inflammatory response, and myocardial cell apoptosis. A growing body of evidence suggests that FGF21 has the potential to be an effective drug for the treatment of diabetic cardiomyopathy. Here, we review recent progress on the characteristics of FGF21 in its protective role, especially in pathological processes such as suppressing apoptosis in the myocardium, reducing inflammation in cardiomyocytes, reducing oxidative stress, and promoting fatty acid oxidation. In addition, we explore the possibility that diabetic cardiomyopathy can be delayed through the application of FGF21, providing possible therapeutic targets of the disease.
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Affiliation(s)
- Xiang Zhang
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Luo Yang
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Xiongfeng Xu
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Fengjuan Tang
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Peng Yi
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Bo Qiu
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Yarong Hao
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China.
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China.
- Division of Metabolic Syndrome, Department of Geriatrics, Renming Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuchang District, Wuhan, 430060, Hubei, China.
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14
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Vetter L, Cortassa S, O'Rourke B, Armoundas AA, Bedja D, Jende JME, Bendszus M, Paolocci N, Sollot SJ, Aon MA, Kurz FT. Diabetes Increases the Vulnerability of the Cardiac Mitochondrial Network to Criticality. Front Physiol 2020; 11:175. [PMID: 32210835 PMCID: PMC7077512 DOI: 10.3389/fphys.2020.00175] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 02/14/2020] [Indexed: 02/06/2023] Open
Abstract
Mitochondrial criticality describes a state in which the mitochondrial cardiac network under intense oxidative stress becomes very sensitive to small perturbations, leading from local to cell-wide depolarization and synchronized oscillations that may escalate to the myocardial syncytium generating arrhythmias. Herein, we describe the occurrence of mitochondrial criticality in the chronic setting of a metabolic disorder, type 1 diabetes (T1DM), using a streptozotocin (STZ)-treated guinea pig (GP) animal model. Using wavelet analysis of mitochondrial networks from two-photon microscopy imaging of cardiac myocytes loaded with a fluorescent probe of the mitochondrial membrane potential, we show that cardiomyocytes from T1DM GPs are closer to criticality, making them more vulnerable to cell-wide mitochondrial oscillations as can be judged by the latency period to trigger oscillations after a laser flash perturbation, and their propensity to oscillate. Insulin treatment of T1DM GPs rescued cardiac myocytes to sham control levels of susceptibility, a protective condition that could also be attained with interventions leading to improvement of the cellular redox environment such as preincubation of diabetic cardiac myocytes with the lipid palmitate or a cell-permeable form of glutathione, in the presence of glucose.
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Affiliation(s)
- Larissa Vetter
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States.,Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Sonia Cortassa
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Brian O'Rourke
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Antonis A Armoundas
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, United States.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology Cambridge, MA, United States
| | - Djahida Bedja
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Johann M E Jende
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Martin Bendszus
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Nazareno Paolocci
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, United States.,Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Steven J Sollot
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Miguel A Aon
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Felix T Kurz
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.,Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, United States
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15
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Teixeira J, Chavarria D, Borges F, Wojtczak L, Wieckowski MR, Karkucinska-Wieckowska A, Oliveira PJ. Dietary Polyphenols and Mitochondrial Function: Role in Health and Disease. Curr Med Chem 2019; 26:3376-3406. [PMID: 28554320 DOI: 10.2174/0929867324666170529101810] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 04/23/2017] [Accepted: 04/23/2017] [Indexed: 12/12/2022]
Abstract
Mitochondria are cytoplasmic double-membraned organelles that are involved in a myriad of key cellular regulatory processes. The loss of mitochondrial function is related to the pathogenesis of several human diseases. Over the last decades, an increasing number of studies have shown that dietary polyphenols can regulate mitochondrial redox status, and in some cases, prevent or delay disease progression. This paper aims to review the role of four dietary polyphenols - resveratrol, curcumin, epigallocatechin-3-gallate nd quercetin - in molecular pathways regulated by mitochondria and their potential impact on human health. Cumulative evidence showed that the aforementioned polyphenols improve mitochondrial functions in different in vitro and in vivo experiments. The mechanisms underlying the polyphenols' beneficial effects include, among others, the attenuation of oxidative stress, the regulation of mitochondrial metabolism and biogenesis and the modulation of cell-death signaling cascades, among other mitochondrial-independent effects. The understanding of the chemicalbiological interactions of dietary polyphenols, namely with mitochondria, may have a huge impact on the treatment of mitochondrial dysfunction-related disorders.
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Affiliation(s)
- José Teixeira
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto 4169- 007, Portugal.,CNC - Center for Neuroscience and Cell Biology, UC-Biotech, Biocant Park - Cantanhede, University of Coimbra, Portugal
| | - Daniel Chavarria
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto 4169- 007, Portugal
| | - Fernanda Borges
- CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto 4169- 007, Portugal
| | - Lech Wojtczak
- Nencki Institute of Experimental Biology, Warsaw, Poland
| | | | | | - Paulo J Oliveira
- CNC - Center for Neuroscience and Cell Biology, UC-Biotech, Biocant Park - Cantanhede, University of Coimbra, Portugal
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16
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Morales PE, Arias-Durán C, Ávalos-Guajardo Y, Aedo G, Verdejo HE, Parra V, Lavandero S. Emerging role of mitophagy in cardiovascular physiology and pathology. Mol Aspects Med 2019; 71:100822. [PMID: 31587811 DOI: 10.1016/j.mam.2019.09.006] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 09/23/2019] [Indexed: 01/02/2023]
Abstract
Healthy mitochondrial function is imperative for most tissues, but especially those with a high energy demand. Robust evidence linking mitochondrial dysfunction with cardiovascular disease has demonstrated that mitochondrial activity is highly relevant to cardiac muscle performance. Mitochondrial homeostasis is maintained through coordination among the processes that comprise the so-called mitochondrial dynamics machinery. The most-studied elements of cardiac mitochondrial dynamics are mitochondrial fission and fusion, biogenesis and degradation. Selective autophagic removal of mitochondria (mitophagy) is essential for clearing away defective mitochondria but can lead to cell damage and death if not tightly controlled. In cardiovascular cells such as cardiomyocytes and cardiac fibroblasts, mitophagy is involved in metabolic activity, cell differentiation, apoptosis and other physiological processes related to major phenotypic changes. Modulation of mitophagy has detrimental and/or beneficial outcomes in various cardiovascular diseases, suggesting that a deeper understanding of the mechanisms underlying mitochondrial degradation in the heart could provide valuable clinical insights. Here, we discuss current evidence supporting the role of mitophagy in cardiac pathophysiology, with an emphasis on different research models and their interpretations; basic concepts related to this selective autophagy; and the most commonly used experimental approaches for studying this mechanism. Finally, we provide a comprehensive literature analysis on the role of mitophagy in heart failure, ischemia/reperfusion, diabetic cardiomyopathy and other cardiovascular diseases, as well as its potential biomedical applications.
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Affiliation(s)
- Pablo E Morales
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Carla Arias-Durán
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, Santiago, Chile; Autophagy Research Center, Universidad de Chile, Santiago, Chile
| | - Yáreni Ávalos-Guajardo
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Geraldine Aedo
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Hugo E Verdejo
- Advanced Center for Chronic Diseases (ACCDiS), División de Enfermedades Cardiovasculares, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Valentina Parra
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, Santiago, Chile; Autophagy Research Center, Universidad de Chile, Santiago, Chile; Network for the Study of High-lethality Cardiopulmonary Diseases (REECPAL), Universidad de Chile, Santiago, Chile.
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS), Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, Universidad de Chile, Santiago, Chile; Corporación Centro de Estudios Científicos de las Enfermedades Crónicas (CECEC), Santiago, Chile; Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA.
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17
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Wang Y, Li H, Li Y, Zhao Y, Xiong F, Liu Y, Xue H, Yang Z, Ni S, Sahil A, Che H, Wang L. Coriolus versicolor
alleviates diabetic cardiomyopathy by inhibiting cardiac fibrosis and NLRP3 inflammasome activation. Phytother Res 2019; 33:2737-2748. [PMID: 31338905 DOI: 10.1002/ptr.6448] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/06/2019] [Accepted: 07/01/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Yueqiu Wang
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
| | - Hui Li
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
| | - Yang Li
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
| | - Yihan Zhao
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
| | - Fangfei Xiong
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
| | - Yining Liu
- Department of Pharmacology, College of PharmacyHarbin Medical University Harbin Heilongjiang Province 150001 China
| | - Hongru Xue
- Department of Pharmacology, College of PharmacyHarbin Medical University Harbin Heilongjiang Province 150001 China
| | - Zhenyu Yang
- Department of Pharmacology, College of PharmacyHarbin Medical University Harbin Heilongjiang Province 150001 China
| | - Sha Ni
- Department of Pharmacology, College of PharmacyHarbin Medical University Harbin Heilongjiang Province 150001 China
| | - Abbas Sahil
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
| | - Hui Che
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
- Institute of Chronic DiseaseHeilongjiang Academy of Medical Science Harbin Heilongjiang Province 150001 China
| | - Lihong Wang
- Department of EndocrinologyThe Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province 150001 China
- Institute of Chronic DiseaseHeilongjiang Academy of Medical Science Harbin Heilongjiang Province 150001 China
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18
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Guan Y, Zhou L, Zhang Y, Tian H, Li A, Han X. Effects of PP2A/Nrf2 on experimental diabetes mellitus-related cardiomyopathy by regulation of autophagy and apoptosis through ROS dependent pathway. Cell Signal 2019; 62:109339. [PMID: 31173878 DOI: 10.1016/j.cellsig.2019.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 06/02/2019] [Accepted: 06/04/2019] [Indexed: 01/08/2023]
Abstract
Diabetes mellitus-related cardiomyopathy (DMCMP) has been defined as ventricular dysfunction that occurs in diabetic patients independent of a recognized cause such as coronary artery disease or hypertension. Mechanisms underlying DMCMP have not been fully elucidated. In this study, the roles of protein phosphatase 2A/nuclear factor NF-E2-related factor 2 (PP2A/Nrf2) in experimental DMCMP induced by high glucose were studied in vitro and in vivo. The results showed that high glucose could induce experimental DMCMP and increase ROS generation, increase the expression and nuclear translocation of Nrf2, down-regulate the expression of PI3K/Akt/mTOR and up-regulate the expression of ERK, and activate the autophagy of cardiomyocytes. The activity or expression of PP2A in DMCMP increased. PP2A could up-regulate the expression of Nrf2 and promote cardiomyocytes autophagy and apoptosis. Inhibition of PP2A could reduce the expression of Nrf2 and inhibit the autophagy and apoptosis of cardiomyocytes. The results suggested that hyperglycemic-induced experimental DMCMP may be related to up-regulating the expression of Nrf2 through PP2A/Nrf2 pathway. These results will be helpful to elucidate the pathogenesis and mechanism of DMCMP and find targets for the development of new drugs to prevent or treat DMCMP.
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Affiliation(s)
- Yanhui Guan
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Lichun Zhou
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Yu Zhang
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Huiqin Tian
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China; Department of Pharmacology, Shandong college of Traditional Chinese Medicine, 508 East Binhai road, Yantai 264199, China
| | - Anqi Li
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China
| | - Xiuzhen Han
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan 250012, China; Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, Shandong University, Jinan, China.
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19
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Tetrahydrocurcumin Ameliorates Diabetic Cardiomyopathy by Attenuating High Glucose-Induced Oxidative Stress and Fibrosis via Activating the SIRT1 Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6746907. [PMID: 31210844 PMCID: PMC6532281 DOI: 10.1155/2019/6746907] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/11/2019] [Indexed: 01/10/2023]
Abstract
Hyperglycemia-induced oxidative stress and fibrosis play a crucial role in the development of diabetic cardiomyopathy (DCM). Tetrahydrocurcumin (THC), a major bioactive metabolite of natural antioxidant curcumin, is reported to exert even more effective antioxidative and superior antifibrotic properties as well as anti-inflammatory and antidiabetic abilities. This study was designed to investigate the potential protective effects of THC on experimental DCM and its underlying mechanisms, pointing to the role of high glucose-induced oxidative stress and interrelated fibrosis. In STZ-induced diabetic mice, oral administration of THC (120 mg/kg/d) for 12 weeks significantly improved the cardiac function and ameliorated myocardial fibrosis and cardiac hypertrophy, accompanied by reduced reactive oxygen species (ROS) generation. Mechanically, THC administration remarkably increased the expression of the SIRT1 signaling pathway both in vitro and in vivo, further evidenced by decreased downstream molecule Ac-SOD2 and enhanced deacetylated production SOD2, which finally strengthened antioxidative stress capacity proven by repaired activities of SOD and GSH-Px and reduced MDA production. Additionally, THC treatment accomplished its antifibrotic effect by depressing the ROS-induced TGFβ1/Smad3 signaling pathway followed by reduced expression of cardiac fibrotic markers α-SMA, collagen I, and collagen III. Collectively, these finds demonstrated the therapeutic potential of THC treatment to alleviate DCM mainly by attenuating hyperglycemia-induced oxidative stress and fibrosis via activating the SIRT1 pathway.
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20
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Cortassa S, Aon MA, Sollott SJ. Control and Regulation of Substrate Selection in Cytoplasmic and Mitochondrial Catabolic Networks. A Systems Biology Analysis. Front Physiol 2019; 10:201. [PMID: 30906265 PMCID: PMC6418011 DOI: 10.3389/fphys.2019.00201] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 02/15/2019] [Indexed: 12/21/2022] Open
Abstract
Appropriate substrate selection between fats and glucose is associated with the success of interventions that maintain health such as exercise or caloric restriction, or with the severity of diseases such as diabetes or other metabolic disorders. Although the interaction and mutual inhibition between glucose and fatty-acids (FAs) catabolism has been studied for decades, a quantitative and integrated understanding of the control and regulation of substrate selection through central catabolic pathways is lacking. We addressed this gap here using a computational model representing cardiomyocyte catabolism encompassing glucose (Glc) utilization, pyruvate transport into mitochondria and oxidation in the tricarboxylic acid (TCA) cycle, β-oxidation of palmitate (Palm), oxidative phosphorylation, ion transport, pH regulation, and ROS generation and scavenging in cytoplasmic and mitochondrial compartments. The model is described by 82 differential equations and 119 enzymatic, electron transport and substrate transport reactions accounting for regulatory mechanisms and key players, namely pyruvate dehydrogenase (PDH) and its modulation by multiple effectors. We applied metabolic control analysis to the network operating with various Glc to Palm ratios. The flux and metabolites’ concentration control were visualized through heat maps providing major insights into main control and regulatory nodes throughout the catabolic network. Metabolic pathways located in different compartments were found to reciprocally control each other. For example, glucose uptake and the ATP demand exert control on most processes in catabolism while TCA cycle activities and membrane-associated energy transduction reactions exerted control on mitochondrial processes namely β-oxidation. PFK and PDH, two highly regulated enzymes, exhibit opposite behavior from a control perspective. While PFK activity was a main rate-controlling step affecting the whole network, PDH played the role of a major regulator showing high sensitivity (elasticity) to substrate availability and key activators/inhibitors, a trait expected from a flexible substrate selector strategically located in the metabolic network. PDH regulated the rate of Glc and Palm consumption, consistent with its high sensitivity toward AcCoA, CoA, and NADH. Overall, these results indicate that the control of catabolism is highly distributed across the metabolic network suggesting that fuel selection between FAs and Glc goes well beyond the mechanisms traditionally postulated to explain the glucose-fatty-acid cycle.
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Affiliation(s)
- Sonia Cortassa
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Miguel A Aon
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Steven J Sollott
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
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21
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Berthiaume JM, Kurdys JG, Muntean DM, Rosca MG. Mitochondrial NAD +/NADH Redox State and Diabetic Cardiomyopathy. Antioxid Redox Signal 2019; 30:375-398. [PMID: 29073779 PMCID: PMC6306679 DOI: 10.1089/ars.2017.7415] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Significance: Diabetic cardiomyopathy (DCM) is a frequent complication occurring even in well-controlled asymptomatic diabetic patients, and it may advance to heart failure (HF). Recent Advances: The diabetic heart is characterized by a state of "metabolic rigidity" involving enhanced rates of fatty acid uptake and mitochondrial oxidation as the predominant energy source, and it exhibits mitochondrial electron transport chain defects. These alterations promote redox state changes evidenced by a decreased NAD+/NADH ratio associated with an increase in acetyl-CoA/CoA ratio. NAD+ is a co-substrate for deacetylases, sirtuins, and a critical molecule in metabolism and redox signaling; whereas acetyl-CoA promotes protein lysine acetylation, affecting mitochondrial integrity and causing epigenetic changes. Critical Issues: DCM lacks specific therapies with treatment only in later disease stages using standard, palliative HF interventions. Traditional therapy targeting neurohormonal signaling and hemodynamics failed to improve mortality rates. Though mitochondrial redox state changes occur in the heart with obesity and diabetes, how the mitochondrial NAD+/NADH redox couple connects the remodeled energy metabolism with mitochondrial and cytosolic antioxidant defense and nuclear epigenetic changes remains to be determined. Mitochondrial therapies targeting the mitochondrial NAD+/NADH redox ratio may alleviate cardiac dysfunction. Future Directions: Specific therapies must be supported by an optimal understanding of changes in mitochondrial redox state and how it influences other cellular compartments; this field has begun to surface as a therapeutic target for the diabetic heart. We propose an approach based on an alternate mitochondrial electron transport that normalizes the mitochondrial redox state and improves cardiac function in diabetes.
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Affiliation(s)
- Jessica M Berthiaume
- 1 Department of Physiology & Biophysics, School of Medicine, Case Western Reserve University , Cleveland, Ohio
| | - Jacob G Kurdys
- 2 Department of Foundational Sciences, College of Medicine, Central Michigan University , Mount Pleasant, Michigan
| | - Danina M Muntean
- 3 Department of Functional Sciences-Pathophysiology, "Victor Babes" University of Medicine and Pharmacy , Timisoara, Romania
| | - Mariana G Rosca
- 2 Department of Foundational Sciences, College of Medicine, Central Michigan University , Mount Pleasant, Michigan
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22
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Yin Z, Zhao Y, He M, Li H, Fan J, Nie X, Yan M, Chen C, Wang DW. MiR-30c/PGC-1β protects against diabetic cardiomyopathy via PPARα. Cardiovasc Diabetol 2019; 18:7. [PMID: 30635067 PMCID: PMC6329097 DOI: 10.1186/s12933-019-0811-7] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 01/03/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Metabolic abnormalities have been implicated as a causal event in diabetic cardiomyopathy (DCM). However, the mechanisms underlying cardiac metabolic disorder in DCM were not fully understood. RESULTS Db/db mice, palmitate treated H9c2 cells and primary neonatal rat cardiomyocytes were employed in the current study. Microarray data analysis revealed that PGC-1β may play an important role in DCM. Downregulation of PGC-1β relieved palmitate induced cardiac metabolism shift to fatty acids use and relevant lipotoxicity in vitro. Bioinformatics coupled with biochemical validation was used to confirm that PGC-1β was one of the direct targets of miR-30c. Remarkably, overexpression of miR-30c by rAAV system improved glucose utilization, reduced excessive reactive oxygen species production and myocardial lipid accumulation, and subsequently attenuated cardiomyocyte apoptosis and cardiac dysfunction in db/db mice. Similar effects were also observed in cultured cells. More importantly, miR-30c overexpression as well as PGC-1β knockdown reduced the transcriptional activity of PPARα, and the effects of miR-30c on PPARα was almost abated by PGC-1β knockdown. CONCLUSIONS Our data demonstrated a protective role of miR-30c in cardiac metabolism in diabetes via targeting PGC-1β, and suggested that modulation of PGC-1β by miR-30c may provide a therapeutic approach for DCM.
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Affiliation(s)
- Zhongwei Yin
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Yanru Zhao
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Mengying He
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Huaping Li
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Jiahui Fan
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Xiang Nie
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Mengwen Yan
- Department of Cardiology, China-Japan Friendship Hospital, No. 2 Yinghua Dongjie, Beijing, 100029 China
| | - Chen Chen
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Dao Wen Wang
- Division of Cardiology and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
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Wu M, Yang Y, Wang M, Zeng F, Li Q, Liu W, Guo S, He M, Wang Y, Huang J, Zhou L, Li Y, Hu J, Gong W, Zhang Z. Exogenous Pancreatic Kallikrein Improves Diabetic Cardiomyopathy in Streptozotocin-Induced Diabetes. Front Pharmacol 2018; 9:855. [PMID: 30131697 PMCID: PMC6091235 DOI: 10.3389/fphar.2018.00855] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 07/16/2018] [Indexed: 12/29/2022] Open
Abstract
Aims: To evaluate the protective effects of exogenous pancreatic kallikrein (PKK) treatment on diabetic cardiomyopathy (DCM) and explore the underlying mechanisms. Methods and Results: Streptozotocin (STZ)-induced diabetic rats, a type 1 diabetic model, were treated with either PKK or saline for 12 weeks. Non-diabetic rats were used as controls. PKK administration attenuated the mitochondria swelling, Z line misalignments, myofibrosis and interstitial collagen accumulation in diabetic myocardial tissue. The oxidative stress imbalance including increased nitrotyrosine, decreased anti-oxidative components such as nuclear receptor nuclear factor like 2 (Nrf2), glutathione peroxidase 1(GPx-1), catalase (CAT) and superoxide dismutase (SOD), were recovered in the heart of PKK-treated diabetic rats. In diabetic rats, protein expression of TGF-β1 and accumulation of collagen I in the heart tissues was decreased after PKK administration. Markers for inflammation were decreased in diabetic rats by PKK treatment. Compared to diabetic rats, PKK reversed the degradation of IκB-α, an inhibitive element of heterotrimer nuclear factor kappa B (NF-κB). The endothelial nitric oxide synthase (eNOS) protein and myocardial nitrate/nitrite were impaired in the heart of diabetic rats, which, however, were restored after PKK treatment. The sarcoplasmic reticulum Ca2+-ATPase 2 (SERCA2) and phospholamban (PLN) were mishandled in diabetic rats, while were rectified in PKK-treated diabetic rats. The plasma NT-proBNP level was increased in diabetic rats while was reduced with PKK treatment. Conclusion: PKK protects against DCM via reducing fibrosis, inflammation, and oxidative stress, promoting nitric oxide production, as well as restoring the function of the calcium channel.
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Affiliation(s)
- Meng Wu
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.,Department of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou, China
| | - Yeping Yang
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Meng Wang
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Fangfang Zeng
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Qin Li
- Division of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenjuan Liu
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Shizhe Guo
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Min He
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.,Institute of Endocrinology and Diabetology, Fudan University, Shanghai, China
| | - Yi Wang
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Jie Huang
- Changzhou Qianhong Biopharma Co., Ltd., Changzhou, China
| | - Linuo Zhou
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Yiming Li
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.,Institute of Endocrinology and Diabetology, Fudan University, Shanghai, China
| | - Ji Hu
- Department of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou, China
| | - Wei Gong
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhaoyun Zhang
- Division of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.,Institute of Endocrinology and Diabetology, Fudan University, Shanghai, China
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24
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Wang S, Zhao Z, Feng X, Cheng Z, Xiong Z, Wang T, Lin J, Zhang M, Hu J, Fan Y, Reiter RJ, Wang H, Sun D. Melatonin activates Parkin translocation and rescues the impaired mitophagy activity of diabetic cardiomyopathy through Mst1 inhibition. J Cell Mol Med 2018; 22:5132-5144. [PMID: 30063115 PMCID: PMC6156356 DOI: 10.1111/jcmm.13802] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/26/2018] [Accepted: 06/01/2018] [Indexed: 12/13/2022] Open
Abstract
Mitophagy eliminates dysfunctional mitochondria and thus plays a cardinal role in diabetic cardiomyopathy (DCM). We observed the favourable effects of melatonin on cardiomyocyte mitophagy in mice with DCM and elucidated their underlying mechanisms. Electron microscopy and flow cytometric analysis revealed that melatonin reduced the number of impaired mitochondria in the diabetic heart. Other than decreasing mitochondrial biogenesis, melatonin increased the clearance of dysfunctional mitochondria in mice with DCM. Melatonin increased LC3 II expression as well as the colocalization of mitochondria and lysosomes in HG‐treated cardiomyocytes and the number of typical autophagosomes engulfing mitochondria in the DCM heart. These results indicated that melatonin promoted mitophagy. When probing the mechanism, increased Parkin translocation to the mitochondria may be responsible for the up‐regulated mitophagy exerted by melatonin. Parkin knockout counteracted the beneficial effects of melatonin on the cardiac mitochondrial morphology and bioenergetic disorders, thus abolishing the substantial effects of melatonin on cardiac remodelling with DCM. Furthermore, melatonin inhibited Mammalian sterile 20‐like kinase 1 (Mst1) phosphorylation, thus enhancing Parkin‐mediated mitophagy, which contributed to mitochondrial quality control. In summary, this study confirms that melatonin rescues the impaired mitophagy activity of DCM. The underlying mechanism may be attributed to activation of Parkin translocation via inhibition of Mst1.
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Affiliation(s)
- Shanjie Wang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhijing Zhao
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xinyu Feng
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Zheng Cheng
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhenyu Xiong
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Tingting Wang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jie Lin
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Mingming Zhang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jianqiang Hu
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yanhong Fan
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Russel J Reiter
- Department of Cellular and Structural Biology, UT Health Science Center, San Antonio, Texas
| | - Haichang Wang
- Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Dongdong Sun
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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25
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[Exendin-4 alleviates diabetic cardiomyopathy in mice by regulating Sirt1/PGC1α]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38. [PMID: 29891446 PMCID: PMC6743905 DOI: 10.3969/j.issn.1673-4254.2018.05.03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE To investigate the protective effect of exendin-4 against diabetic cardiomyopathy in mice and explore the underlying mechanism. METHODS C57BL/6J mice were randomly divided into normal control group with normal diet and diabetic group with high-fat diet for 4 weeks before streptozotocin injection. The successfully established diabetic mouse models were divided into diabetic group with exendin-4 treatment and diabetic control group for daily treatment with intraperitoneal injection of 1 nmol/kg exendin-4 and saline of equivalent volume for 8 weeks, respectively. The physiological parameters such as blood glucose and body weight were recorded. RT-PCR was used to examine the transcription levels of genes related with myocardial hypertrophy and fibrosis and the genes related with mitochondrial functions including PGC1α, NRF and CytoC. The expressions of oxidative stress markers and Sirt1/PGC1 proteins were measured using Western blotting. and HE staining was used to observe the myocardial structural changes in the mice. RESULTS Compared with the normal control mice, the mice in diabetic control group showed significantly increased blood glucose and blood lipid levels (P<0.001), which were obviously improved by Exendin-4 treatment. The expressions of ANP, BNP, TGFβ1, CytoC1 and NOX1 were significantly increased (P<0.05) while Sirt1, PGC1α, NRF and SOD1 expression were markedly decreased in the myocardial tissue of the diabetic mice (P<0.05). Exendin-4 treatment resulted in obviously reduced expressions of ANP, BNP, TGFβ1, CytoC1 and NOX1 (P<0.05) and increased expressions of Sirt1, PGC1α, NRF and SOD1 (P<0.05) in the diabetic mice. CONCLUSIONS Exendin-4 protects against myocardial injury in diabetic mice by improving mitochondrial function and inhibiting oxidative stress through the Sirt1/PGC1α signaling pathway.
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26
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Resveratrol Ameliorates Cardiac Dysfunction by Inhibiting Apoptosis via the PI3K/Akt/FoxO3a Pathway in a Rat Model of Diabetic Cardiomyopathy. J Cardiovasc Pharmacol 2018; 70:184-193. [PMID: 28678055 DOI: 10.1097/fjc.0000000000000504] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The aim of this study was to explore the effect and mechanism of action of resveratrol (RSV) on cardiac function in diabetic cardiomyopathy (DCM). Hyperglycemia-induced apoptosis contributes to the pathogenic changes in DCM. RSV treatment inhibited high glucose-induced apoptosis of neonatal rat ventricular myocytes. Additionally, high glucose decreased cell viability, prevented serine-threonine kinase (Akt) and FoxO3a phosphorylation, and suppressed cytoplasmic translocation of FoxO3a. However, these effects of apoptosis were reversed by 10 μM of RSV. The PI3K inhibitor LY294002 abolished the RSV protective effect in vitro. RSV (5 or 50 mg·kg·d orally for 8 weeks) prevented the deterioration of cardiac function and structural cardiomyopathy in a streptozotocin-induced rat model of diabetes and reduced apoptosis in diabetic myocardium. Furthermore, it restored streptozotocin-impaired phosphorylation of Akt and FoxO3a (p-Akt and p-FoxO3a) and suppressed nuclear translocation of FoxO3a in vivo. Together, these data indicate that RSV has therapeutic potential against DCM by inhibiting apoptosis via the PI3K/Akt/FoxO3a pathway.
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27
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Mahmoud AM. Exercise Amaliorates Metabolic Disturbances and Oxidative Stress in Diabetic Cardiomyopathy: Possible Underlying Mechanisms. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 999:207-230. [DOI: 10.1007/978-981-10-4307-9_12] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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28
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Myricetin Possesses Potential Protective Effects on Diabetic Cardiomyopathy through Inhibiting I κB α/NF κB and Enhancing Nrf2/HO-1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:8370593. [PMID: 29147465 PMCID: PMC5632894 DOI: 10.1155/2017/8370593] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/18/2017] [Accepted: 07/26/2017] [Indexed: 12/11/2022]
Abstract
Diabetic cardiomyopathy (DCM) is associated with a greater risk of mortality in patients with diabetes mellitus. Currently, no specific treatment has been suggested for DCM treatment. This study demonstrated that myricetin (M) attenuated DCM-associated cardiac injury in mice subjected to streptozotocin (SZT) and in neonatal rat cardiomyocytes (NRCM) challenged with high glucose. In vivo investigation demonstrated 6 months of M treatment (200 mg/kg/d) significantly alleviated cardiac hypertrophy, apoptosis, and interstitial fibrosis. Mechanically, M treatment significantly increased the activity of Nrf2/HO-1 pathway, strengthening antioxidative stress capacity evidenced by reversed activities of GPx and SOD, and decreased MDA production. M treatment also inhibited IκBα/NF-κB pathway, resulting in reduced secretion of inflammation cytokines including IL-1β, TNF-α, and IL-6. Besides, the TGFβ/Smad3 signaling was also blunted in DCM mice treated with M. These beneficial effects of M treatment protected cardiomyocytes from apoptosis as shown by decreased TUNEL-positive nucleus, c-caspase 3, and Bax. Similar effects of M treatment could be reproduced in NRCM treated with high glucose. Furthermore, through silencing Nrf2 in NRCM, we found that the regulation of IκBα/NFκB by M was independent on its function on Nrf2. Thus, we concluded that M possesses potential protective effects on DCM through inhibiting IκBα/NFκB and enhancing Nrf2/HO-1.
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29
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Ma S, Feng J, Zhang R, Chen J, Han D, Li X, Yang B, Li X, Fan M, Li C, Tian Z, Wang Y, Cao F. SIRT1 Activation by Resveratrol Alleviates Cardiac Dysfunction via Mitochondrial Regulation in Diabetic Cardiomyopathy Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4602715. [PMID: 28883902 PMCID: PMC5572590 DOI: 10.1155/2017/4602715] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 05/31/2017] [Accepted: 06/06/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is a major threat for diabetic patients. Silent information regulator 1 (SIRT1) has a regulatory effect on mitochondrial dynamics, which is associated with DCM pathological changes. Our study aims to investigate whether resveratrol, a SRIT1 activator, could exert a protective effect against DCM. METHODS AND RESULTS Cardiac-specific SIRT1 knockout (SIRT1KO) mice were generated using Cre-loxP system. SIRT1KO mice displayed symptoms of DCM, including cardiac hypertrophy and dysfunction, insulin resistance, and abnormal glucose metabolism. DCM and SIRT1KO hearts showed impaired mitochondrial biogenesis and function, while SIRT1 activation by resveratrol reversed this in DCM mice. High glucose caused increased apoptosis, impaired mitochondrial biogenesis, and function in cardiomyocytes, which was alleviated by resveratrol. SIRT1 deletion by both SIRT1KO and shRNA abolished the beneficial effects of resveratrol. Furthermore, the function of SIRT1 is mediated via the deacetylation effect on peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), thus inducing increased expression of nuclear respiratory factor 1 (NRF-1), NRF-2, estrogen-related receptor-α (ERR-α), and mitochondrial transcription factor A (TFAM). CONCLUSIONS Cardiac deletion of SIRT1 caused phenotypes resembling DCM. Activation of SIRT1 by resveratrol ameliorated cardiac injuries in DCM through PGC-1α-mediated mitochondrial regulation. Collectively, SIRT1 may serve as a potential therapeutic target for DCM.
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Affiliation(s)
- Sai Ma
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Jing Feng
- Department of Emergency Medicine, Jinling Hospital, Nanjing, Jiangsu, China
| | - Ran Zhang
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Jiangwei Chen
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Dong Han
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiang Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Bo Yang
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Xiujuan Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Miaomiao Fan
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Congye Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zuhong Tian
- Department of Digestive Diseases, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yabin Wang
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
| | - Feng Cao
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
- Department of Cardiology, Chinese PLA General Hospital, Beijing, China
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30
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Mitochondrial health, the epigenome and healthspan. Clin Sci (Lond) 2017; 130:1285-305. [PMID: 27358026 DOI: 10.1042/cs20160002] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/03/2016] [Indexed: 02/07/2023]
Abstract
Food nutrients and metabolic supply-demand dynamics constitute environmental factors that interact with our genome influencing health and disease states. These gene-environment interactions converge at the metabolic-epigenome-genome axis to regulate gene expression and phenotypic outcomes. Mounting evidence indicates that nutrients and lifestyle strongly influence genome-metabolic functional interactions determining disease via altered epigenetic regulation. The mitochondrial network is a central player of the metabolic-epigenome-genome axis, regulating the level of key metabolites [NAD(+), AcCoA (acetyl CoA), ATP] acting as substrates/cofactors for acetyl transferases, kinases (e.g. protein kinase A) and deacetylases (e.g. sirtuins, SIRTs). The chromatin, an assembly of DNA and nucleoproteins, regulates the transcriptional process, acting at the epigenomic interface between metabolism and the genome. Within this framework, we review existing evidence showing that preservation of mitochondrial network function is directly involved in decreasing the rate of damage accumulation thus slowing aging and improving healthspan.
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31
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Cortassa S, Sollott SJ, Aon MA. Mitochondrial respiration and ROS emission during β-oxidation in the heart: An experimental-computational study. PLoS Comput Biol 2017; 13:e1005588. [PMID: 28598967 PMCID: PMC5482492 DOI: 10.1371/journal.pcbi.1005588] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 06/23/2017] [Accepted: 05/23/2017] [Indexed: 12/11/2022] Open
Abstract
Lipids are main fuels for cellular energy and mitochondria their major oxidation site. Yet unknown is to what extent the fuel role of lipids is influenced by their uncoupling effects, and how this affects mitochondrial energetics, redox balance and the emission of reactive oxygen species (ROS). Employing a combined experimental-computational approach, we comparatively analyze β-oxidation of palmitoyl CoA (PCoA) in isolated heart mitochondria from Sham and streptozotocin (STZ)-induced type 1 diabetic (T1DM) guinea pigs (GPs). Parallel high throughput measurements of the rates of oxygen consumption (VO2) and hydrogen peroxide (H2O2) emission as a function of PCoA concentration, in the presence of L-carnitine and malate, were performed. We found that PCoA concentration < 200 nmol/mg mito protein resulted in low H2O2 emission flux, increasing thereafter in Sham and T1DM GPs under both states 4 and 3 respiration with diabetic mitochondria releasing higher amounts of ROS. Respiratory uncoupling and ROS excess occurred at PCoA > 600 nmol/mg mito prot, in both control and diabetic animals. Also, for the first time, we show that an integrated two compartment mitochondrial model of β-oxidation of long-chain fatty acids and main energy-redox processes is able to simulate the relationship between VO2 and H2O2 emission as a function of lipid concentration. Model and experimental results indicate that PCoA oxidation and its concentration-dependent uncoupling effect, together with a partial lipid-dependent decrease in the rate of superoxide generation, modulate H2O2 emission as a function of VO2. Results indicate that keeping low levels of intracellular lipid is crucial for mitochondria and cells to maintain ROS within physiological levels compatible with signaling and reliable energy supply.
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Affiliation(s)
- Sonia Cortassa
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States of America
| | - Steven J. Sollott
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States of America
| | - Miguel A. Aon
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States of America
- * E-mail:
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32
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Abstract
For more than half a century, metabolic perturbations have been explored in the failing myocardium, highlighting a reversion to a more fetal-like metabolic profile (characterized by depressed fatty acid oxidation and concomitant increased reliance on use of glucose). More recently, alterations in ketone body and amino acid/protein metabolism have been described during heart failure, as well as mitochondrial dysfunction and perturbed metabolic signaling (e.g., acetylation, O-GlcNAcylation). Although numerous mechanisms are likely involved, the current review provides recent advances regarding the metabolic origins of heart failure, and their potential contribution toward contractile dysfunction of the heart.
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33
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Liu HJ, Fan YL, Liao HH, Liu Y, Chen S, Ma ZG, Zhang N, Yang Z, Deng W, Tang QZ. Apigenin alleviates STZ-induced diabetic cardiomyopathy. Mol Cell Biochem 2017; 428:9-21. [PMID: 28176247 DOI: 10.1007/s11010-016-2913-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 12/21/2016] [Indexed: 01/02/2023]
Abstract
Apigenin is an important component of fruits and vegetables in human daily diets. Several cellular and animal models have been performed to demonstrate its anti-oxidant and anti-inflammatory bioactivities. However, the cardioprotective effects of apigenin in diabetic cardiomyopathy (DCM) remain unclear. In this study, we intended to explore the roles of apigenin in cardiac remodeling of DCM. Male C57BL/6 J mice were treated with streptozotocin (STZ, 50 mg/kg) for 5 consecutive days to induce DCM. The echocardiography and catheter-based measurements of hemodynamic parameters were performed to evaluate the cardiac function. Paraffin slices of harvested hearts were prepared for histological pathological analysis and TUNEL assay. Oxidative assay kits were used to detect Glutathione Peroxidase (GPx), Lipid Peroxidation Malondialdehyde (MDA), and Superoxide Dismutase (SOD). Western blot and real-time PCR were used for accessing the expressions of protein and mRNA. Diabetes mellitus exacerbated the cardiac dysfunction, fibrosis, and overaccumulation of 4-hydroxynonenal accompanying with down-regulation of Bcl2, GPx, and SOD, up-regulation of MDA, cleaved caspase3, and pro-apoptotic protein Bax, and contribution to the translocation of NF-κB. All these pathological changes could be effectively blunted by treatment of apigenin in vivo. Finally, H9c2 treated with high glucose or apigenin was used for further investigation of these effects in vitro; what is more, we also compared the effects between apigenin and Resveratrol in in vitro experiments. Our experiments have demonstrated that apigenin may be a potential drug for diabetic patients suffering from DCM.
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Affiliation(s)
- Huang-Jun Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Yun-Lin Fan
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Hai-Han Liao
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Yuan Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Si Chen
- College of Pharmacy, Hubei University of Science and Technology, Xianning, China
| | - Zhen-Guo Ma
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Ning Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Zheng Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Wei Deng
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.,Cardiovascular Research Institute of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China. .,Cardiovascular Research Institute of Wuhan University, Wuhan, China. .,Hubei Key Laboratory of Cardiology, Wuhan, China.
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34
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Gilca GE, Stefanescu G, Badulescu O, Tanase DM, Bararu I, Ciocoiu M. Diabetic Cardiomyopathy: Current Approach and Potential Diagnostic and Therapeutic Targets. J Diabetes Res 2017; 2017:1310265. [PMID: 28421204 PMCID: PMC5379137 DOI: 10.1155/2017/1310265] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 03/02/2017] [Accepted: 03/09/2017] [Indexed: 01/01/2023] Open
Abstract
Although ischemic heart disease is the major cause of death in diabetic patients, diabetic cardiomyopathy (DCM) is increasingly recognized as a clinically relevant entity. Considering that it comprises a variety of mechanisms and effects on cardiac function, increasing the risk of heart failure and worsening the prognosis of this patient category, DCM represents an important complication of diabetes mellitus, with a silent development in its earlier stages, involving intricate pathophysiological mechanisms, including oxidative stress, defective calcium handling, altered mitochondrial function, remodeling of the extracellular matrix, and consequent deficient cardiomyocyte contractility. While DCM is common in diabetic asymptomatic patients, it is frequently underdiagnosed, due to few diagnostic possibilities in its early stages. Moreover, since a strategy for prevention and treatment in order to improve the prognosis of DCM has not been established, it is important to identify clear pathophysiological landmarks, to pinpoint the available diagnostic possibilities and to spot potential therapeutic targets.
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Affiliation(s)
- Georgiana-Emmanuela Gilca
- Department of Pathophysiology, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa” Iasi, Iasi, Romania
| | - Gabriela Stefanescu
- Gastroenterology Department, “Sf. Spiridon” County Clinical Emergency Hospital, University of Medicine and Pharmacy “Grigore T. Popa” Iasi, Iasi, Romania
| | - Oana Badulescu
- Department of Pathophysiology, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa” Iasi, Iasi, Romania
| | - Daniela-Maria Tanase
- 3rd Internal Medicine Clinic, “Sf. Spiridon” County Clinical Emergency Hospital, University of Medicine and Pharmacy “Grigore T. Popa” Iasi, Iasi, Romania
| | - Iris Bararu
- Department of Pathophysiology, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa” Iasi, Iasi, Romania
| | - Manuela Ciocoiu
- Department of Pathophysiology, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa” Iasi, Iasi, Romania
- *Manuela Ciocoiu:
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35
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Schrauwen-Hinderling VB, Kooi ME, Schrauwen P. Mitochondrial Function and Diabetes: Consequences for Skeletal and Cardiac Muscle Metabolism. Antioxid Redox Signal 2016; 24:39-51. [PMID: 25808308 DOI: 10.1089/ars.2015.6291] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
SIGNIFICANCE An early hallmark in the development of type 2 diabetes is the resistance to the effect of insulin in skeletal muscle and in the heart. Since mitochondrial function was found to be diminished in patients with type 2 diabetes, it was suggested that this defect might be involved in the etiology of insulin resistance. Although several hypotheses were suggested, yet unclear is the mechanistic link between these two phenomena. RECENT ADVANCES Herein, we review the evidence for disturbances in mitochondrial function in skeletal muscle and the heart in the diabetic state. Also the mechanisms involved in improving mitochondrial function are considered and, whenever possible, human data is cited. CRITICAL ISSUES Reported evidence shows that interventions that improve skeletal muscle mitochondrial function also improve insulin sensitivity in humans. In the heart, available data from animal studies suggests that enhancement of mitochondrial function can reverse aging-induced changes in heart function, and can be protective against cardiomyopathy and heart failure. FUTURE DIRECTIONS Mitochondria and their functions can be targeted with the aim of improving skeletal muscle insulin sensitivity and cardiac function. However, human clinical intervention studies are needed to fully substantiate the potential of mitochondria as a target to prevent cardiometabolic disease.
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Affiliation(s)
- Vera B Schrauwen-Hinderling
- 1 Department of Radiology, Maastricht University Medical Center , Maastricht, The Netherlands .,2 Department of Human Biology, Maastricht University Medical Center , Maastricht, The Netherlands .,3 Department of NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Center , Maastricht, The Netherlands
| | - Marianne Eline Kooi
- 1 Department of Radiology, Maastricht University Medical Center , Maastricht, The Netherlands .,3 Department of NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Center , Maastricht, The Netherlands .,4 Department of CARIM School for Cardiovascular Diseases in Maastricht, Maastricht University Medical Center , Maastricht, The Netherlands
| | - Patrick Schrauwen
- 2 Department of Human Biology, Maastricht University Medical Center , Maastricht, The Netherlands .,3 Department of NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Center , Maastricht, The Netherlands
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Impaired mitochondrial energy supply coupled to increased H2O2 emission under energy/redox stress leads to myocardial dysfunction during Type I diabetes. Clin Sci (Lond) 2015; 129:561-74. [PMID: 26186741 DOI: 10.1042/cs20150204] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 05/29/2015] [Indexed: 12/23/2022]
Abstract
In Type I diabetic (T1DM) patients, both peaks of hyperglycaemia and increased sympathetic tone probably contribute to impair systolic and diastolic function. However, how these stressors eventually alter cardiac function during T1DM is not fully understood. In the present study, we hypothesized that impaired mitochondrial energy supply and excess reactive oxygen species (ROS) emission is centrally involved in T1DM cardiac dysfunction due to metabolic/redox stress and aimed to determine the mitochondrial sites implicated in these alterations. To this end, we used isolated myocytes and mitochondria from Sham and streptozotocin (STZ)-induced T1DM guinea pigs (GPs), untreated or treated with insulin. Relative to controls, T1DM myocytes exhibited higher oxidative stress when challenged with high glucose (HG) combined with β-adrenergic stimulation [via isoprenaline (isoproterenol) (ISO)], leading to contraction/relaxation deficits. T1DM mitochondria had decreased respiration with complex II and IV substrates and markedly lower ADP phosphorylation rates and higher H2O2 emission when challenged with oxidants to mimic the more oxidized redox milieu present in HG + ISO-treated cardiomyocytes. Since in T1DM hearts insulin-sensitivity is preserved and a glucose-to-fatty acid (FA) shift occurs, we next tested whether insulin therapy or acute palmitate (Palm) infusion prevents HG + ISO-induced cardiac dysfunction. We found that insulin rescued proper cardiac redox balance, but not mitochondrial respiration or contractile performance. Conversely, Palm restored redox balance and preserved myocyte function. Thus, stressors such as peaks of HG and adrenergic hyperactivity impair mitochondrial respiration, hampering energy supply while exacerbating ROS emission. Our study suggests that an ideal therapeutic measure to treat metabolically/redox-challenged T1DM hearts should concomitantly correct energetic and redox abnormalities to fully maintain cardiac function.
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