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Hernandez-Resendiz S, Prakash A, Loo SJ, Semenzato M, Chinda K, Crespo-Avilan GE, Dam LC, Lu S, Scorrano L, Hausenloy DJ. Targeting mitochondrial shape: at the heart of cardioprotection. Basic Res Cardiol 2023; 118:49. [PMID: 37955687 PMCID: PMC10643419 DOI: 10.1007/s00395-023-01019-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/14/2023]
Abstract
There remains an unmet need to identify novel therapeutic strategies capable of protecting the myocardium against the detrimental effects of acute ischemia-reperfusion injury (IRI), to reduce myocardial infarct (MI) size and prevent the onset of heart failure (HF) following acute myocardial infarction (AMI). In this regard, perturbations in mitochondrial morphology with an imbalance in mitochondrial fusion and fission can disrupt mitochondrial metabolism, calcium homeostasis, and reactive oxygen species production, factors which are all known to be critical determinants of cardiomyocyte death following acute myocardial IRI. As such, therapeutic approaches directed at preserving the morphology and functionality of mitochondria may provide an important strategy for cardioprotection. In this article, we provide an overview of the alterations in mitochondrial morphology which occur in response to acute myocardial IRI, and highlight the emerging therapeutic strategies for targeting mitochondrial shape to preserve mitochondrial function which have the future therapeutic potential to improve health outcomes in patients presenting with AMI.
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Affiliation(s)
- Sauri Hernandez-Resendiz
- Duke-NUS Medical School, Cardiovascular and Metabolic Disorders Programme, Singapore, Singapore
- National Heart Centre Singapore, National Heart Research Institute Singapore, Singapore, Singapore
| | - Aishwarya Prakash
- Duke-NUS Medical School, Cardiovascular and Metabolic Disorders Programme, Singapore, Singapore
- National Heart Centre Singapore, National Heart Research Institute Singapore, Singapore, Singapore
| | - Sze Jie Loo
- Duke-NUS Medical School, Cardiovascular and Metabolic Disorders Programme, Singapore, Singapore
- National Heart Centre Singapore, National Heart Research Institute Singapore, Singapore, Singapore
| | | | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Gustavo E Crespo-Avilan
- Duke-NUS Medical School, Cardiovascular and Metabolic Disorders Programme, Singapore, Singapore
- National Heart Centre Singapore, National Heart Research Institute Singapore, Singapore, Singapore
| | - Linh Chi Dam
- Duke-NUS Medical School, Cardiovascular and Metabolic Disorders Programme, Singapore, Singapore
- National Heart Centre Singapore, National Heart Research Institute Singapore, Singapore, Singapore
| | - Shengjie Lu
- Duke-NUS Medical School, Cardiovascular and Metabolic Disorders Programme, Singapore, Singapore
- National Heart Centre Singapore, National Heart Research Institute Singapore, Singapore, Singapore
| | - Luca Scorrano
- Veneto Institute of Molecular Medicine, Padova, Italy
- Department of Biology, University of Padova, Padova, Italy
| | - Derek J Hausenloy
- Duke-NUS Medical School, Cardiovascular and Metabolic Disorders Programme, Singapore, Singapore.
- National Heart Centre Singapore, National Heart Research Institute Singapore, Singapore, Singapore.
- National University Singapore, Yong Loo Lin School of Medicine, Singapore, Singapore.
- University College London, The Hatter Cardiovascular Institute, London, UK.
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Delgado-Betancourt V, Chinda K, Mesirca P, Barrère C, Covinhes A, Gallot L, Vincent A, Bidaud I, Kumphune S, Nargeot J, Piot C, Wickman K, Mangoni ME, Barrère-Lemaire S. Heart rate reduction after genetic ablation of L-type Ca v1.3 channels induces cardioprotection against ischemia-reperfusion injury. Front Cardiovasc Med 2023; 10:1134503. [PMID: 37593151 PMCID: PMC10429177 DOI: 10.3389/fcvm.2023.1134503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 06/21/2023] [Indexed: 08/19/2023] Open
Abstract
Background Acute myocardial infarction (AMI) is the major cause of cardiovascular mortality worldwide. Most ischemic episodes are triggered by an increase in heart rate, which induces an imbalance between myocardial oxygen delivery and consumption. Developing drugs that selectively reduce heart rate by inhibiting ion channels involved in heart rate control could provide more clinical benefits. The Cav1.3-mediated L-type Ca2+ current (ICav1.3) play important roles in the generation of heart rate. Therefore, they can constitute relevant targets for selective control of heart rate and cardioprotection during AMI. Objective We aimed to investigate the relationship between heart rate and infarct size using mouse strains knockout for Cav1.3 (Cav1.3-/-) L-type calcium channel and of the cardiac G protein gated potassium channel (Girk4-/-) in association with the funny (f)-channel inhibitor ivabradine. Methods Wild-type (WT), Cav1.3+/-, Cav1.3-/- and Girk4-/- mice were used as models of respectively normal heart rate, moderate heart rate reduction, bradycardia, and mild tachycardia, respectively. Mice underwent a surgical protocol of myocardial IR (40 min ischemia and 60 min reperfusion). Heart rate was recorded by one-lead surface ECG recording, and infarct size measured by triphenyl tetrazolium chloride staining. In addition, Cav1.3-/- and WT hearts perfused on a Langendorff system were subjected to the same ischemia-reperfusion protocol ex vivo, without or with atrial pacing, and the coronary flow was recorded. Results Cav1.3-/- mice presented reduced infarct size (-29%), while Girk4-/- displayed increased infarct size (+30%) compared to WT mice. Consistently, heart rate reduction in Cav1.3+/- or by the f-channel blocker ivabradine was associated with significant decrease in infarct size (-27% and -32%, respectively) in comparison to WT mice. Conclusion Our results show that decreasing heart rate allows to protect the myocardium against IR injury in vivo and reveal a close relationship between basal heart rate and IR injury. In addition, this study suggests that targeting Cav1.3 channels could constitute a relevant target for reducing infarct size, since maximal heart rate dependent cardioprotective effect is already observed in Cav1.3+/- mice.
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Affiliation(s)
- Viviana Delgado-Betancourt
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Kroekkiat Chinda
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Pietro Mesirca
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Christian Barrère
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Aurélie Covinhes
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Laura Gallot
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Anne Vincent
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Isabelle Bidaud
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Sarawut Kumphune
- Biomedical Engineering Institute (BMEi), Chiang Mai University, Chiang Mai, Thailand
| | - Joël Nargeot
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Christophe Piot
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
- Département de Cardiologie Interventionnelle, Clinique du Millénaire, Montpellier, France
| | - Kevin Wickman
- Department of Pharmacology, University of Minnesota, Minneapolis, MN, United States
| | - Matteo Elia Mangoni
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
| | - Stéphanie Barrère-Lemaire
- Institut de Génomique Fonctionnelle, Université Montpellier, CNRS, INSERM, Montpellier, France
- LabEx Ion Channel Science & Therapeutics (ICST), Université de Nice, Valbonne, France
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3
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Li Y, Chinda K, Xiang Y, Zhou H, Xu D, Ong SG, Ong SB. Harnessing mitochondrial transplantation to sustain cardiac function: Another step forward. Mol Ther 2023; 31:1201-1203. [PMID: 37141857 PMCID: PMC10329106 DOI: 10.1016/j.ymthe.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 04/10/2023] [Accepted: 04/10/2023] [Indexed: 05/06/2023] Open
Affiliation(s)
- Yuhao Li
- Department of Medicine and Therapeutics (MEDT), Faculty of Medicine, Chinese University of Hong Kong (CUHK), Hong Kong, China; Centre for Cardiovascular Genomics and Medicine (CCGM), Lui Che Woo Institute of Innovative Medicine, CUHK, Hong Kong, China
| | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand; Integrative Cardiovascular Research Unit, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Yaozu Xiang
- Key Laboratory of Arrhythmias of the Ministry of Education of China, School of Life Sciences and Technology, Shanghai East Hospital, Tongji University, Shanghai 20092, China.
| | - Hao Zhou
- Department of Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY, USA.
| | - Dachun Xu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
| | - Sang-Ging Ong
- Department of Pharmacology & Regenerative Medicine, The University of Illinois College of Medicine, 909 S Wolcott Avenue, COMRB 4100, Chicago, IL 60612, USA; Division of Cardiology, Department of Medicine, The University of Illinois College of Medicine, 909 S Wolcott Avenue, COMRB 4100, Chicago, IL 60612, USA.
| | - Sang-Bing Ong
- Department of Medicine and Therapeutics (MEDT), Faculty of Medicine, Chinese University of Hong Kong (CUHK), Hong Kong, China; Centre for Cardiovascular Genomics and Medicine (CCGM), Lui Che Woo Institute of Innovative Medicine, CUHK, Hong Kong, China; Hong Kong Children's Hospital (HKCH), Hong Kong Hub of Paediatric Excellence (HK HOPE), Kowloon Bay, Hong Kong, China; KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China; Shenzhen Research Institute (SZRI), Chinese University of Hong Kong (CUHK), Shenzhen, China.
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4
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Kwek XY, Hall AR, Lim WW, Katwadi K, Soong PL, Grishina E, Lin KH, Crespo-Avilan G, Yap EP, Ismail NI, Chinda K, Chung YY, Wei H, Shim W, Montaigne D, Tinker A, Ong SB, Hausenloy DJ. Role of cardiac mitofusins in cardiac conduction following simulated ischemia-reperfusion. Sci Rep 2022; 12:21049. [PMID: 36473917 PMCID: PMC9727036 DOI: 10.1038/s41598-022-25625-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial dysfunction induced by acute cardiac ischemia-reperfusion (IR), may increase susceptibility to arrhythmias by perturbing energetics, oxidative stress production and calcium homeostasis. Although changes in mitochondrial morphology are known to impact on mitochondrial function, their role in cardiac arrhythmogenesis is not known. To assess action potential duration (APD) in cardiomyocytes from the Mitofusins-1/2 (Mfn1/Mfn2)-double-knockout (Mfn-DKO) compared to wild-type (WT) mice, optical-electrophysiology was conducted. To measure conduction velocity (CV) in atrial and ventricular tissue from the Mfn-DKO and WT mice, at both baseline and following simulated acute IR, multi-electrode array (MEA) was employed. Intracellular localization of connexin-43 (Cx43) at baseline was evaluated by immunohistochemistry, while Cx-43 phosphorylation was assessed by Western-blotting. Mfn-DKO cardiomyocytes demonstrated an increased APD. At baseline, CV was significantly lower in the left ventricle of the Mfn-DKO mice. CV decreased with simulated-ischemia and returned to baseline levels during simulated-reperfusion in WT but not in atria of Mfn-DKO mice. Mfn-DKO hearts displayed increased Cx43 lateralization, although phosphorylation of Cx43 at Ser-368 did not differ. In summary, Mfn-DKO mice have increased APD and reduced CV at baseline and impaired alterations in CV following cardiac IR. These findings were associated with increased Cx43 lateralization, suggesting that the mitofusins may impact on post-MI cardiac-arrhythmogenesis.
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Affiliation(s)
- Xiu-Yi Kwek
- grid.419385.20000 0004 0620 9905National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore
| | - Andrew R. Hall
- grid.83440.3b0000000121901201The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College London, London, UK
| | - Wei-Wen Lim
- grid.419385.20000 0004 0620 9905National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Khairunnisa Katwadi
- grid.428397.30000 0004 0385 0924Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Poh Loong Soong
- grid.4280.e0000 0001 2180 6431Yong Loo Lin School of Medicine, National University Singapore, Singapore, Singapore ,grid.4280.e0000 0001 2180 6431Cardiovascular Translational Program, Cardiovascular Research Institute (CVRI), National University of Singapore, Singapore, Singapore ,grid.412106.00000 0004 0621 9599Department of Medicine, National University Hospital of Singapore (NUHS), Singapore, Singapore ,Ternion Biosciences, Singapore, Singapore
| | | | | | - Gustavo Crespo-Avilan
- grid.419385.20000 0004 0620 9905National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore, Singapore ,grid.8664.c0000 0001 2165 8627Department of Biochemistry, Medical Faculty, Justus Liebig-University, Giessen, Germany
| | - En Ping Yap
- grid.419385.20000 0004 0620 9905National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore
| | - Nur Izzah Ismail
- grid.10784.3a0000 0004 1937 0482Centre for Cardiovascular Genomics and Medicine (CCGM), Lui Che Woo Institute of Innovative Medicine, Chinese University of Hong Kong (CUHK), Hong Kong, SAR China ,grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong (CUHK), Hong Kong, SAR China ,Hong Kong Hub of Paediatric Excellence (HK HOPE), Hong Kong Children’s Hospital (HKCH), Kowloon Bay, Hong Kong, SAR China
| | - Kroekkiat Chinda
- grid.412029.c0000 0000 9211 2704Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand ,grid.412029.c0000 0000 9211 2704Integrative Cardiovascular Research Unit, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Ying Ying Chung
- grid.428397.30000 0004 0385 0924Centre for Vision Research, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Heming Wei
- grid.414963.d0000 0000 8958 3388Research Laboratory, KK Women’s & Children’s Hospital, Singapore, Singapore
| | - Winston Shim
- grid.486188.b0000 0004 1790 4399Health and Social Sciences Cluster, Singapore Institute of Technology, Singapore, Singapore
| | - David Montaigne
- grid.503422.20000 0001 2242 6780Inserm, CHU Lille, Institut Pasteur Lille, U1011-European Genomic Institute for Diabetes (EGID), University of Lille, 59000 Lille, France
| | - Andrew Tinker
- grid.4868.20000 0001 2171 1133Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London, UK
| | - Sang-Bing Ong
- grid.10784.3a0000 0004 1937 0482Centre for Cardiovascular Genomics and Medicine (CCGM), Lui Che Woo Institute of Innovative Medicine, Chinese University of Hong Kong (CUHK), Hong Kong, SAR China ,grid.10784.3a0000 0004 1937 0482Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong (CUHK), Hong Kong, SAR China ,Hong Kong Hub of Paediatric Excellence (HK HOPE), Hong Kong Children’s Hospital (HKCH), Kowloon Bay, Hong Kong, SAR China ,grid.9227.e0000000119573309Joint Laboratory of Bioresources and Molecular Research of Common Diseases, Kunming Institute of Zoology-The Chinese University of Hong Kong (KIZ-CUHK), Chinese Academy of Sciences, Kunming, Yunnan China ,grid.10784.3a0000 0004 1937 0482Shenzhen Research Institute (SZRI), Chinese University of Hong Kong (CUHK), Shenzhen, China
| | - Derek J. Hausenloy
- grid.419385.20000 0004 0620 9905National Heart Research Institute Singapore, National Heart Centre, Singapore, Singapore ,grid.83440.3b0000000121901201The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College London, London, UK ,grid.428397.30000 0004 0385 0924Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore, Singapore ,grid.4280.e0000 0001 2180 6431Yong Loo Lin School of Medicine, National University Singapore, Singapore, Singapore
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Kalkhoran SB, Kriston-Vizi J, Hernandez-Resendiz S, Crespo-Avilan GE, Rosdah AA, Lees JG, Costa JRSD, Ling NXY, Holien JK, Samangouei P, Chinda K, Yap EP, Riquelme JA, Ketteler R, Yellon DM, Lim SY, Hausenloy DJ. Hydralazine protects the heart against acute ischaemia/reperfusion injury by inhibiting Drp1-mediated mitochondrial fission. Cardiovasc Res 2022; 118:282-294. [PMID: 33386841 PMCID: PMC8752357 DOI: 10.1093/cvr/cvaa343] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 12/09/2020] [Indexed: 01/01/2023] Open
Abstract
AIMS Genetic and pharmacological inhibition of mitochondrial fission induced by acute myocardial ischaemia/reperfusion injury (IRI) has been shown to reduce myocardial infarct size. The clinically used anti-hypertensive and heart failure medication, hydralazine, is known to have anti-oxidant and anti-apoptotic effects. Here, we investigated whether hydralazine confers acute cardioprotection by inhibiting Drp1-mediated mitochondrial fission. METHODS AND RESULTS Pre-treatment with hydralazine was shown to inhibit both mitochondrial fission and mitochondrial membrane depolarisation induced by oxidative stress in HeLa cells. In mouse embryonic fibroblasts (MEFs), pre-treatment with hydralazine attenuated mitochondrial fission and cell death induced by oxidative stress, but this effect was absent in MEFs deficient in the mitochondrial fission protein, Drp1. Molecular docking and surface plasmon resonance studies demonstrated binding of hydralazine to the GTPase domain of the mitochondrial fission protein, Drp1 (KD 8.6±1.0 µM), and inhibition of Drp1 GTPase activity in a dose-dependent manner. In isolated adult murine cardiomyocytes subjected to simulated IRI, hydralazine inhibited mitochondrial fission, preserved mitochondrial fusion events, and reduced cardiomyocyte death (hydralazine 24.7±2.5% vs. control 34.1±1.5%, P=0.0012). In ex vivo perfused murine hearts subjected to acute IRI, pre-treatment with hydralazine reduced myocardial infarct size (as % left ventricle: hydralazine 29.6±6.5% vs. vehicle control 54.1±4.9%, P=0.0083), and in the murine heart subjected to in vivo IRI, the administration of hydralazine at reperfusion, decreased myocardial infarct size (as % area-at-risk: hydralazine 28.9±3.0% vs. vehicle control 58.2±3.8%, P<0.001). CONCLUSION We show that, in addition to its antioxidant and anti-apoptotic effects, hydralazine, confers acute cardioprotection by inhibiting IRI-induced mitochondrial fission, raising the possibility of repurposing hydralazine as a novel cardioprotective therapy for improving post-infarction outcomes.
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Affiliation(s)
- Siavash Beikoghli Kalkhoran
- The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College, 67 Chenies Mews, WC1E 6HX London, UK
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, 8 College Road, 169857, Singapore
- National Heart Research Institute Singapore, National Heart Centre, 5 Hospital Drive, 169609, Singapore
| | - Janos Kriston-Vizi
- MRC Laboratory for Molecular Cell Biology, University College, Gower St, Kings Cross, WC1E 6BT London, UK
| | - Sauri Hernandez-Resendiz
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, 8 College Road, 169857, Singapore
- National Heart Research Institute Singapore, National Heart Centre, 5 Hospital Drive, 169609, Singapore
| | - Gustavo E Crespo-Avilan
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, 8 College Road, 169857, Singapore
- National Heart Research Institute Singapore, National Heart Centre, 5 Hospital Drive, 169609, Singapore
- Department of Biochemistry, Medical Faculty, Justus Liebig-University, Ludwigstraße 23, 35390 Giessen, Germany
| | - Ayeshah A Rosdah
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, 9 Princes Street Fitzroy Victoria, 3065, Australia
- Faculty of Medicine, Universitas Sriwijaya, Palembang, Bukit Lama, Kec. Ilir Bar. I, Kota Palembang, 30139 Sumatera Selatan, Indonesia
- Department of Surgery and Medicine, University of Melbourne, Medical Building, Cnr Grattan Street & Royal Parade, 3010 Victoria, Australia
| | - Jarmon G Lees
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, 9 Princes Street Fitzroy Victoria, 3065, Australia
- Department of Surgery and Medicine, University of Melbourne, Medical Building, Cnr Grattan Street & Royal Parade, 3010 Victoria, Australia
| | | | - Naomi X Y Ling
- Metabolic Signalling Laboratory, St Vincent’s Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | - Jessica K Holien
- Department of Surgery and Medicine, University of Melbourne, Medical Building, Cnr Grattan Street & Royal Parade, 3010 Victoria, Australia
- St Vincent’s Institute of Medical Research, 9 Princes Street, Fitzroy Victoria, 3065, Australia
- ACRF Rational Drug Discovery Centre, St Vincent’s Institute of Medical Research, 9 Princes Street Fitzroy Victoria, 3065, Australia
| | - Parisa Samangouei
- The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College, 67 Chenies Mews, WC1E 6HX London, UK
- National Heart Research Institute Singapore, National Heart Centre, 5 Hospital Drive, 169609, Singapore
| | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science, Naresuan University, Tha Pho, Mueang Phitsanulok, 65000, Thailand
| | - En Ping Yap
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, 8 College Road, 169857, Singapore
- National Heart Research Institute Singapore, National Heart Centre, 5 Hospital Drive, 169609, Singapore
| | - Jaime A Riquelme
- The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College, 67 Chenies Mews, WC1E 6HX London, UK
- Advanced Center for Chronic Disease (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas & Facultad de Medicina, Universidad de Chile, Sergio Livingstone 1007, Independencia, Santiago, Chile
| | - Robin Ketteler
- MRC Laboratory for Molecular Cell Biology, University College, Gower St, Kings Cross, WC1E 6BT London, UK
| | - Derek M Yellon
- The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College, 67 Chenies Mews, WC1E 6HX London, UK
| | - Shiang Y Lim
- O’Brien Institute Department, St Vincent’s Institute of Medical Research, 9 Princes Street Fitzroy Victoria, 3065, Australia
- Department of Surgery and Medicine, University of Melbourne, Medical Building, Cnr Grattan Street & Royal Parade, 3010 Victoria, Australia
| | - Derek J Hausenloy
- The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College, 67 Chenies Mews, WC1E 6HX London, UK
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, 8 College Road, 169857, Singapore
- National Heart Research Institute Singapore, National Heart Centre, 5 Hospital Drive, 169609, Singapore
- Yong Loo Lin School of Medicine, National University Singapore, 1E Kent Ridge Road, 119228, Singapore
- Cardiovascular Research Center, College of Medical and Health Sciences, Asia University, Lioufeng Rd., Wufeng, 41354 Taichung, Taiwan
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6
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Chaiwong S, Chatturong U, Chanasong R, Deetud W, To-on K, Puntheeranurak S, Chulikorn E, Kajsongkram T, Raksanoh V, Chinda K, Limpeanchob N, Trisat K, Somran J, Nuengchamnong N, Prajumwong P, Chootip K. Dried mulberry fruit ameliorates cardiovascular and liver histopathological changes in high-fat diet-induced hyperlipidemic mice. J Tradit Complement Med 2021; 11:356-368. [PMID: 34195030 PMCID: PMC8240167 DOI: 10.1016/j.jtcme.2021.02.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND AIM Metabolic disease encompasses most contemporary non-communicable diseases, especially cardiovascular and fatty liver disease. Mulberry fruits of Morus alba L. are a favoured food and a traditional medicine. While they are anti-atherosclerotic and reduce hyperlipidemic risk factors, studies need wider scope that include ameliorating cardiovascular and liver pathologies if they are to become clinically effective treatments. Therefore, the present study sought to show that freshly dried mulberry fruits (dMF) might counteract the metabolic/cardiovascular pathologies in mice made hyperlipidemic by high-fat diet (HF). EXPERIMENTAL PROCEDURE C57BL/6J mice were fed for 3 months with either: i) control diet, ii) HF, iii) HF+100 mg/kg dMF, or iv) HF+300 mg/kg dMF. Body weight gain, food intake, visceral fat accumulation, fasting blood glucose, plasma lipids, and aortic, heart, and liver histopathologies were evaluated. Adipocyte lipid accumulation, autophagy, and bile acid binding were also investigated. RESULTS AND CONCLUSION HF increased food intake, body weight, visceral fat, plasma total cholesterol (TC) and low-density lipoprotein (LDL), TC/HDL ratio, blood glucose, aortic collagen, arterial and cardiac wall thickness, and liver lipid. Both dMF doses prevented hyperphagia, body weight gain, and visceral fat accumulation, lowered blood glucose, plasma TG and unfavourable TC/HDL and elevated plasma HDL beyond baseline. Arterial and cardiac wall hypertrophy, aortic collagen fibre accumulation and liver lipid deposition ameliorated in dMF-fed mice. Clinical trials on dMF are worthwhile but outcomes should be holistic commensurate with the constellation of disease risks. Here, dMF should supplement the switch to nutrient-rich from current energy-dense diets that are progressively crippling national health systems.
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Affiliation(s)
- Suriya Chaiwong
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Usana Chatturong
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Rachanee Chanasong
- Department of Anatomy, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Watcharakorn Deetud
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Kittiwoot To-on
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Supaporn Puntheeranurak
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Ekarin Chulikorn
- Department of Biochemistry, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Tanwarat Kajsongkram
- Expert Center of Innovative Herbal Products, Thailand Institute of Scientific and Technological Research, Pathum Thani, Thailand
| | - Veerada Raksanoh
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Nanteetip Limpeanchob
- Department of Pharmacy Practice and Center of Excellence for Innovation in Chemistry, Pharmacological Research Unit, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Kanittaporn Trisat
- Department of Pharmacy Practice and Center of Excellence for Innovation in Chemistry, Pharmacological Research Unit, Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Julintorn Somran
- Department of Pathology, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Nitra Nuengchamnong
- Science Laboratory Centre, Faculty of Science, Naresuan University, Phitsanulok, Thailand
| | - Piya Prajumwong
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
| | - Krongkarn Chootip
- Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, Phitsanulok, Thailand
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Hernandez-Resendiz S, Chinda K, Ong SB, Cabrera-Fuentes H, Zazueta C, Hausenloy DJ. The Role of Redox Dysregulation in the Inflammatory Response to Acute Myocardial Ischaemia-reperfusion Injury - Adding Fuel to the Fire. Curr Med Chem 2018; 25:1275-1293. [PMID: 28356034 DOI: 10.2174/0929867324666170329100619] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 03/05/2017] [Accepted: 03/05/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND The inflammatory response to acute myocardial ischaemia/ reperfusion injury (IRI) plays a critical role in determining myocardial infarct (MI) size, and subsequent post-MI left ventricular (LV) remodelling, making it a potential therapeutic target for improving clinical outcomes in patients presenting with an acute myocardial infarction (AMI). Recent experimental studies using advanced imaging and molecular techniques, have yielded new insights into the mechanisms through which reactive oxygen species (ROS) contribute to the inflammatory response induced by acute myocardial IRI - "adding fuel to the fire". The infiltration of inflammatory cells into the MI zone, leads to elevated myocardial concentrations of ROS, cytokine release, and activation of apoptotic and necrotic death pathways. Anti-oxidant and anti-inflammatory therapies have failed to protect the heart against acute myocardial IRI. This may be, in part, due to a lack of understanding of the time course, nature and mechanisms of the inflammation and redox dysregulation, which occur in the setting of acute myocardial IRI. CONCLUSION In this article, we examine the inflammatory response and redox dysregulation induced by acute myocardial IRI, and highlight potential therapeutic options for targeting redox dysregulation, in order to attenuate the detrimental effects of the inflammatory response following an AMI, so as to reduce MI size and prevent heart failure.
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Affiliation(s)
- Sauri Hernandez-Resendiz
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore.,Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore.,Department of Cardiovascular Biomedicine, National Institute of Cardiology I. Ch, Mexico, Mexico City, Mexico
| | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Sang-Bing Ong
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore.,Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore
| | - Hector Cabrera-Fuentes
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore.,Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore.,Institute of Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany
| | - Cecilia Zazueta
- Department of Cardiovascular Biomedicine, National Institute of Cardiology I. Ch, Mexico, Mexico City, Mexico
| | - Derek J Hausenloy
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore.,Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore.,Yong Loo Lin School of Medicine, National University Singapore, Singapore.,The Hatter Cardiovascular Institute, University College London, United Kingdom.,The National Institute of Health Research, University College London Hospitals, Biomedical Research Centre, London, United Kingdom.,Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
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8
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Jiang Z, Zhao Y, Tsai WC, Yuan Y, Chinda K, Tan J, Onkka P, Shen C, Chen LS, Fishbein MC, Lin SF, Chen PS, Everett TH. Effects of Vagal Nerve Stimulation on Ganglionated Plexi Nerve Activity and Ventricular Rate in Ambulatory Dogs With Persistent Atrial Fibrillation. JACC Clin Electrophysiol 2018; 4:1106-1114. [PMID: 30139493 DOI: 10.1016/j.jacep.2018.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 05/03/2018] [Accepted: 05/04/2018] [Indexed: 01/09/2023]
Abstract
OBJECTIVES This study was designed to test the hypothesis that low-level vagal nerve stimulation (VNS) reduces the ventricular rate (VR) during atrial fibrillation (AF) through the activation of the inferior vena cava (IVC)-inferior atrial ganglionated plexus nerve activity (IAGPNA). BACKGROUND Increased IVC-IAGPNA can suppress atrioventricular node conduction and slow VR in canine models of AF. METHODS Persistent AF was induced in 6 dogs and the IVC-IAGPNA, right vagal nerve activity, left vagal nerve activity, and an electrocardiogram were recorded. After persistent AF was documented, VNS was programed to 14 s "on" and 1.1 min "off." After 1 week, the VNS was reprogramed to 3 min off and stimulation continued for another week. Neural remodeling of the stellate ganglion (SG) was assessed with tyrosine hydroxylase staining and terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick-end labeling staining. RESULTS Average IVC-IAGPNA was increased during both VNS 1.1 min off (8.20 ± 2.25 μV [95% confidence interval (CI): 6.33 to 9.53 μV]; p = 0.002) and 3 min off (7.96 ± 2.03 μV [95% CI: 6.30 to 9.27 μV]; p = 0.001) versus baseline (7.14 ± 2.20 μV [95% CI: 5.35 to 8.52 μV]). VR was reduced during both VNS 1.1 min off (123.29 ± 6.29 beats/min [95% CI: 116.69 to 129.89 beats/min]; p = 0.001) and 3 min off (120.01 ± 4.93 beats/min [95% CI: 114.84 to 125.18 beats/min]; p = 0.001) compared to baseline (142.04 ± 7.93 bpm [95% CI: 133.72 to 150.37]). Abnormal regions were observed in the left SG, but not in the right SG. Terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick-end labeling-positive neurons were found in 22.2 ± 17.2% [95% CI: 0.9% to 43.5%] of left SG cells and 12.8 ± 8.4% [95% CI: 2.4% to 23.2%] of right SG cells. CONCLUSIONS Chronic low-level VNS increases IVC-IAGPNA and damages bilateral stellate ganglia. Both mechanisms could contribute to the underlying mechanism of VR control during AF.
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Affiliation(s)
- Zhaolei Jiang
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ye Zhao
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiac Surgery, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wei-Chung Tsai
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuan Yuan
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Kroekkiat Chinda
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Jian Tan
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Patrick Onkka
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Changyu Shen
- Richard and Susan Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Lan S Chen
- Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Michael C Fishbein
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Shien-Fong Lin
- Institute of Biomedical Engineering, National Chiao-Tung University, Hsin-Chu, Taiwan
| | - Peng-Sheng Chen
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Thomas H Everett
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
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Ong SB, Katwadi K, Kwek XY, Ismail NI, Chinda K, Ong SG, Hausenloy DJ. Non-coding RNAs as therapeutic targets for preventing myocardial ischemia-reperfusion injury. Expert Opin Ther Targets 2018; 22:247-261. [DOI: 10.1080/14728222.2018.1439015] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sang-Bing Ong
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Khairunnisa Katwadi
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Xiu-Yi Kwek
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Nur Izzah Ismail
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
- Biomedical Research Unit in Cardiovascular Sciences (BRUCS), Naresuan University, Phitsanulok, Thailand
| | - Sang-Ging Ong
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Derek J Hausenloy
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore, Singapore
- National Heart Research Institute of Singapore, National Heart CentreSingapore, Singapore
- The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College London, London, UK
- Yong Loo Lin School of Medicine, National University Singapore, Singapore, Singapore
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10
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Ong SB, Lee WH, Ismail NI, Katwadi K, Kwek XY, Chinda K, Ong SG. GW28-e0420 A human iPSC-based model of diabetic endotheliopathy reveals impaired autophagy that is rescued by calpain inhibition. J Am Coll Cardiol 2017. [DOI: 10.1016/j.jacc.2017.07.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Beikoghli Kalkhoran S, Hall AR, White IJ, Cooper J, Fan Q, Ong SB, Hernández-Reséndiz S, Cabrera-Fuentes H, Chinda K, Chakraborty B, Dorn GW, Yellon DM, Hausenloy DJ. Assessing the effects of mitofusin 2 deficiency in the adult heart using 3D electron tomography. Physiol Rep 2017; 5:e13437. [PMID: 28904083 PMCID: PMC5599868 DOI: 10.14814/phy2.13437] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 12/27/2022] Open
Abstract
The effects of mitofusin 2 (MFN2) deficiency, on mitochondrial morphology and the mitochondria-junctional sarcoplasmic reticulum (jSR) complex in the adult heart, have been previously investigated using 2D electron microscopy, an approach which is unable to provide a 3D spatial assessment of these imaging parameters. Here, we use 3D electron tomography to show that MFN2-deficient mitochondria are larger in volume, more elongated, and less rounded; have fewer mitochondria-jSR contacts, and an increase in the distance between mitochondria and jSR, when compared to WT mitochondria. In comparison to 2D electron microscopy, 3D electron tomography can provide further insights into mitochondrial morphology and the mitochondria-jSR complex in the adult heart.
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Affiliation(s)
- Siavash Beikoghli Kalkhoran
- The Hatter Cardiovascular Institute University College London, London, United Kingdom
- The National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, United Kingdom
- Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Andrew R Hall
- The Hatter Cardiovascular Institute University College London, London, United Kingdom
- The National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, United Kingdom
- Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Ian J White
- MRC Laboratory of Molecular Cell Biology University College London, London, United Kingdom
| | - Jackie Cooper
- Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Qiao Fan
- Centre for Quantitative Medicine, Duke-NUS Medical School, Singapore
| | - Sang-Bing Ong
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore
- National Heart Research Institute Singapore National Heart Centre Singapore, Singapore
| | - Sauri Hernández-Reséndiz
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore
- National Heart Research Institute Singapore National Heart Centre Singapore, Singapore
| | - Hector Cabrera-Fuentes
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore
- National Heart Research Institute Singapore National Heart Centre Singapore, Singapore
| | - Kroekkiat Chinda
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | | | - Gerald W Dorn
- Centre for Pharmacogenomics, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Derek M Yellon
- The Hatter Cardiovascular Institute University College London, London, United Kingdom
- The National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, United Kingdom
- Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Derek J Hausenloy
- The Hatter Cardiovascular Institute University College London, London, United Kingdom
- The National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, United Kingdom
- Institute of Cardiovascular Science, University College London, London, United Kingdom
- Cardiovascular and Metabolic Disorder Programme, Duke-NUS Medical School, Singapore
- National Heart Research Institute Singapore National Heart Centre Singapore, Singapore
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
- Yong Loo Lin School of Medicine, National University Singapore, Singapore
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12
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Tsai WC, Chan YH, Chinda K, Chen Z, Patel J, Shen C, Zhao Y, Jiang Z, Yuan Y, Ye M, Chen LS, Riley AA, Persohn SA, Territo PR, Everett TH, Lin SF, Vinters HV, Fishbein MC, Chen PS. Effects of renal sympathetic denervation on the stellate ganglion and brain stem in dogs. Heart Rhythm 2016; 14:255-262. [PMID: 27720832 DOI: 10.1016/j.hrthm.2016.10.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND Renal sympathetic denervation (RD) is a promising method of neuromodulation for the management of cardiac arrhythmia. OBJECTIVE We tested the hypothesis that RD is antiarrhythmic in ambulatory dogs because it reduces the stellate ganglion nerve activity (SGNA) by remodeling the stellate ganglion (SG) and brain stem. METHODS We implanted a radiotransmitter to record SGNA and electrocardiogram in 9 ambulatory dogs for 2 weeks, followed by a second surgery for RD and 2 months SGNA recording. Cell death was probed by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay. RESULTS Integrated SGNA at baseline and 1 and 2 months after RD were 14.0 ± 4.0, 9.3 ± 2.8, and 9.6 ± 2.0 μV, respectively (P = .042). The SG from RD but not normal control dogs (n = 5) showed confluent damage. An average of 41% ± 10% and 40% ± 16% of ganglion cells in the left and right SG, respectively, were TUNEL positive in RD dogs compared with 0% in controls dogs (P = .005 for both). The left and right SG from RD dogs had more tyrosine hydroxylase-negative ganglion cells than did the left SG of control dogs (P = .028 and P = .047, respectively). Extensive TUNEL-positive neurons and glial cells were also noted in the medulla, associated with strongly positive glial fibrillary acidic protein staining. The distribution was heterogeneous, with more cell death in the medial than lateral aspects of the medulla. CONCLUSION Bilateral RD caused significant central and peripheral sympathetic nerve remodeling and reduced SGNA in ambulatory dogs. These findings may in part explain the antiarrhythmic effects of RD.
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Affiliation(s)
- Wei-Chung Tsai
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Hsin Chan
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Cardiovascular Department, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Kroekkiat Chinda
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Zhenhui Chen
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Jheel Patel
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Changyu Shen
- Department of Biostatistics, Indiana University School of Medicine and the Fairbanks School of Public Health, Indianapolis, Indiana
| | - Ye Zhao
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiac Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhaolei Jiang
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuan Yuan
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Michael Ye
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | | | - Amanda A Riley
- Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana
| | - Scott A Persohn
- Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana
| | - Paul R Territo
- Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, Indiana
| | - Thomas H Everett
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Shien-Fong Lin
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Institute of Biomedical Engineering, National Chiao-Tung University, Hsin-Chu, Taiwan
| | - Harry V Vinters
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Michael C Fishbein
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Peng-Sheng Chen
- Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
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13
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Zhao Y, Jiang Z, Tsai WC, Yuan Y, Chinda K, Choi EK, Fishbein MC, Lin SF, Chen PS, Everett TH. Ganglionated plexi and ligament of Marshall ablation reduces atrial vulnerability and causes stellate ganglion remodeling in ambulatory dogs. Heart Rhythm 2016; 13:2083-90. [PMID: 27426436 DOI: 10.1016/j.hrthm.2016.07.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Simultaneous activation of the stellate ganglion (SG), the ligament of Marshall (LOM), and the ganglionated plexi often precedes the onset of paroxysmal atrial tachyarrhythmia (PAT). OBJECTIVE The purpose of this study was to test the hypothesis that ablation of the LOM and the superior left ganglionated plexi (SLGP) reduces atrial vulnerability and results in remodeling of the SG. METHODS Nerve activity was correlated to PAT and ventricular rate (VR) at baseline, after ablation of the LOM and SLGP, and after atrial fibrillation. Neuronal cell death was assessed with tyrosine hydroxylase and terminal deoxynucleotidyl transferase dUTP nick end label (TUNEL) staining. RESULTS There were 4 ± 2 PAT episodes per day in controls. None were observed in the ablation group, even though SG nerve activity and VR increased from 2.2 µV (95% confidence interval [CI] 1.2-3.3 µV) and 80 bpm (95% CI 68-92 bpm) at baseline, to 3.0 µV (95% CI 2.6-3.4 µV, P = .046) and 90 bpm (95% CI 75-108 bpm, P = .026) after ablation, and to 3.1 µV (95% CI 1.7-4.5 µV, P = .116) and 95 bpm (95% CI 79-110 bpm, P = .075) after atrial fibrillation. There was an increase in tyrosine hydroxylase-negative cells in the ablation group and 19.7% (95% CI 8.6%-30.8%) TUNEL-positive staining in both the left and right SG. None were observed in the control group. CONCLUSION LOM and SLGP ablation caused left SG remodeling and cell death. There was reduced correlation of the VR response and PAT to SG nerve activity. These findings support the importance of SLGP and LOM in atrial arrhythmogenesis.
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Affiliation(s)
- Ye Zhao
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiac Surgery, The First Affiliated Hospital of China Medical University, Sheng Yang, China
| | - Zhaolei Jiang
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wei-Chung Tsai
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuan Yuan
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiothoracic Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Kroekkiat Chinda
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Eue-Keun Choi
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Michael C Fishbein
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, California
| | - Shien-Fong Lin
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Institute of Biomedical Engineering, National Chiao-Tung University, Hsin-Chu, Taiwan
| | - Peng-Sheng Chen
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Thomas H Everett
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
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14
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Chinda K, Tsai WC, Chan YH, Lin AYT, Patel J, Zhao Y, Tan AY, Shen MJ, Lin H, Shen C, Chattipakorn N, Rubart-von der Lohe M, Chen LS, Fishbein MC, Lin SF, Chen Z, Chen PS. Intermittent left cervical vagal nerve stimulation damages the stellate ganglia and reduces the ventricular rate during sustained atrial fibrillation in ambulatory dogs. Heart Rhythm 2015; 13:771-80. [PMID: 26607063 DOI: 10.1016/j.hrthm.2015.11.031] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND The effects of intermittent open-loop vagal nerve stimulation (VNS) on the ventricular rate (VR) during atrial fibrillation (AF) remain unclear. OBJECTIVE The purpose of this study was to test the hypothesis that VNS damages the stellate ganglion (SG) and improves VR control during persistent AF. METHODS We performed left cervical VNS in ambulatory dogs while recording the left SG nerve activity (SGNA) and vagal nerve activity. Tyrosine hydroxylase (TH) staining and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining were used to assess neuronal cell death in the SG. RESULTS We induced persistent AF by atrial pacing in 6 dogs, followed by intermittent VNS with short ON-time (14 seconds) and long OFF-time (66 seconds). The integrated SGNA and VR during AF were 4.84 mV·s (95% confidence interval [CI] 3.08-6.60 mV·s) and 142 beats/min (95% CI 116-168 beats/min), respectively. During AF, VNS reduced the integrated SGNA and VR, respectively, to 3.74 mV·s (95% CI 2.27-5.20 mV·s; P = .021) and 115 beats/min (95% CI 96-134 beats/min; P = .016) during 66-second OFF-time and to 4.07 mV·s (95% CI 2.42-5.72 mV·s; P = .037) and 114 beats/min (95% CI 83-146 beats/min; P = .039) during 3-minute OFF-time. VNS increased the frequencies of prolonged (>3 seconds) pauses during AF. TH staining showed large confluent areas of damage in the left SG, characterized by pyknotic nuclei, reduced TH staining, increased percentage of TH-negative ganglion cells, and positive TUNEL staining. Occasional TUNEL-positive ganglion cells were also observed in the right SG. CONCLUSION VNS damaged the SG, leading to reduced SGNA and better rate control during persistent AF.
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Affiliation(s)
- Kroekkiat Chinda
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Wei-Chung Tsai
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Hsin Chan
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Division of Cardiology, The First Department of Medicine, Chang-Gung Memorial Hospital, Taipei, Taiwan
| | - Andrew Y-T Lin
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Jheel Patel
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Ye Zhao
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Department of Cardiac Surgery, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Alex Y Tan
- Division of Cardiology, Hunter Holmes McGuire VA Medical Center, Virginia Commonwealth University, Richmond, Virginia
| | - Mark J Shen
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Hongbo Lin
- Department of Biostatistics, Indiana University School of Medicine and the Fairbanks School of Public Health, Indianapolis, Indiana
| | - Changyu Shen
- Department of Biostatistics, Indiana University School of Medicine and the Fairbanks School of Public Health, Indianapolis, Indiana
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - Lan S Chen
- The Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Michael C Fishbein
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Shien-Fong Lin
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Institute of Biomedical Engineering, National Chiao-Tung University, Hsin-Chu, Taiwan
| | - Zhenhui Chen
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Peng-Sheng Chen
- The Krannert Institute of Cardiology and Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
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15
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Apaijai N, Chinda K, Palee S, Chattipakorn S, Chattipakorn N. Combined vildagliptin and metformin exert better cardioprotection than monotherapy against ischemia-reperfusion injury in obese-insulin resistant rats. PLoS One 2014; 9:e102374. [PMID: 25036861 PMCID: PMC4103813 DOI: 10.1371/journal.pone.0102374] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 06/18/2014] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Obese-insulin resistance caused by long-term high-fat diet (HFD) consumption is associated with left ventricular (LV) dysfunction and increased risk of myocardial infarction. Metformin and vildagliptin have been shown to exert cardioprotective effects. However, the effect of these drugs on the hearts under obese-insulin resistance with ischemia-reperfusion (I/R) injury is unclear. We hypothesized that combined vildagliptin and metformin provide better protective effects against I/R injury than monotherapy in obese-insulin resistant rats. METHODOLOGY Male Wistar rats were fed either HFD or normal diet. Rats in each diet group were divided into 4 subgroups to receive vildagliptin, metformin, combined vildagliptin and metformin, or saline for 21 days. Ischemia due to left anterior descending artery ligation was allowed for 30-min, followed by 120-min reperfusion. Metabolic parameters, heart rate variability (HRV), LV function, infarct size, mitochondrial function, calcium transient, Bax and Bcl-2, and Connexin 43 (Cx43) were determined. Rats developed insulin resistance after 12 weeks of HFD consumption. Vildagliptin, metformin, and combined drugs improved metabolic parameters, HRV, and LV function. During I/R, all treatments improved LV function, reduced infarct size and Bax, increased Bcl-2, and improved mitochondrial function in HFD rats. However, only combined drugs delayed the time to the first VT/VF onset, reduced arrhythmia score and mortality rate, and increased p-Cx43 in HFD rats. CONCLUSION Although both vildagliptin and metformin improved insulin resistance and attenuate myocardial injury caused by I/R, combined drugs provided better outcomes than single therapy by reducing arrhythmia score and mortality rate.
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Affiliation(s)
- Nattayaporn Apaijai
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Kroekkiat Chinda
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siripong Palee
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- School of Medicine, Mae FahLuang University, Chiang Rai, Thailand
| | - Siriporn Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Biomedical Engineering Center, Chiang Mai University, Chiang Mai, Thailand
- * E-mail:
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16
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Chinda K, Sanit J, Chattipakorn S, Chattipakorn N. Dipeptidyl peptidase-4 inhibitor reduces infarct size and preserves cardiac function via mitochondrial protection in ischaemia-reperfusion rat heart. Diab Vasc Dis Res 2014; 11:75-83. [PMID: 24357666 DOI: 10.1177/1479164113516134] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
AIM We hypothesized that dipeptidyl peptidase (DPP)-4 inhibitor (vildagliptin) reduces fatal arrhythmias, cardiac dysfunction and infarct size caused by ischaemia-reperfusion (I/R) injury via its attenuation of cardiac mitochondrial dysfunction. METHODS In total, 26 rats were randomized to receive either 1 mL normal saline solution or 2.0 mg/kg vildagliptin intravenously (n = 13/group) 30 min prior to a 30-min left anterior descending coronary artery occlusion, followed by a 120-min reperfusion. Arrhythmia scores, cardiac functions, infarct size and mitochondrial function were evaluated. RESULTS Vildagliptin reduced the infarct size by 44% and mitigated cardiac dysfunction by preserving cardiac function without altering the incidence of cardiac arrhythmias. Vildagliptin increased expression of Bcl-2 and pro-caspase3 in the ischaemic area, whereas Bax and phosphorylated-connexin43/total-connexin43 were not altered. Vildagliptin attenuated cardiac mitochondrial dysfunction by reducing the reactive oxygen species level and mitochondrial swelling. CONCLUSIONS DPP-4 inhibitor provides cardioprotection by reducing the infarct size and ameliorating cardiac dysfunction in I/R hearts by attenuating cardiac mitochondrial dysfunction and cardiomyocyte apoptosis.
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Affiliation(s)
- Kroekkiat Chinda
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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Shelton R, Kumar M, Chinda K, Lin S, Murray K, Chen P. Increased Subcutaneous Nerve Activity Is Strongly Associated with the Initiation of Atrial Tachyarrhythmias in Ambulatory Canines. Heart Rhythm 2013. [DOI: 10.1016/j.hrthm.2013.09.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Shinlapawittayatorn K, Chinda K, Palee S, Surinkaew S, Thunsiri K, Weerateerangkul P, Chattipakorn S, KenKnight BH, Chattipakorn N. Low-amplitude, left vagus nerve stimulation significantly attenuates ventricular dysfunction and infarct size through prevention of mitochondrial dysfunction during acute ischemia-reperfusion injury. Heart Rhythm 2013; 10:1700-7. [PMID: 23933295 DOI: 10.1016/j.hrthm.2013.08.009] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND Right cervical vagus nerve stimulation (VNS) provides cardioprotective effects against acute ischemia-reperfusion injury in small animals. However, inconsistent findings have been reported. OBJECTIVE To determine whether low-amplitude, left cervical VNS applied either intermittently or continuously imparts cardioprotection against acute ischemia-reperfusion injury. METHODS Thirty-two isoflurane-anesthetized swine (25-30 kg) were randomized into 4 groups: control (sham operated, no VNS), continuous-VNS (C-VNS; 3.5 mA, 20 Hz), intermittent-VNS (I-VNS; continuously recurring cycles of 21-second ON, 30-second OFF), and I-VNS + atropine (1 mg/kg). Left cervical VNS was applied immediately after left anterior descending artery occlusion (60 minutes) and continued until the end of reperfusion (120 minutes). The ischemic and nonischemic myocardium was harvested for cardiac mitochondrial function assessment. RESULTS VNS significantly reduced infarct size, improved ventricular function, decreased ventricular fibrillation episodes, and attenuated cardiac mitochondrial reactive oxygen species production, depolarization, and swelling, compared with the control group. However, I-VNS produced the most profound cardioprotective effects, particularly infarct size reduction and decreased ventricular fibrillation episodes, compared to both I-VNS + atropine and C-VNS. These beneficial effects of VNS were abolished by atropine. CONCLUSIONS During ischemia-reperfusion injury, both C-VNS and I-VNS provide significant cardioprotective effects compared with I-VNS + atropine. These beneficial effects were abolished by muscarinic blockade, suggesting the importance of muscarinic receptor modulation during VNS. The protective effects of VNS could be due to its protection of mitochondrial function during ischemia-reperfusion.
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Palee S, Weerateerangkul P, Chinda K, Chattipakorn SC, Chattipakorn N. Mechanisms responsible for beneficial and adverse effects of rosiglitazone in a rat model of acute cardiac ischaemia-reperfusion. Exp Physiol 2013; 98:1028-37. [DOI: 10.1113/expphysiol.2012.070433] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Incretin is a gut derived peptide hormone secreted in the intestine after food ingestion, and is degraded rapidly after secretion by dipeptidyl peptidase (DPP)-4. Incretin-based therapy, such as glucagon-like peptide (GLP)-1 and the DPP-4 inhibitor, has been proposed as a new therapeutic approach for the treatment of type 2 diabetic patients. In the past few years, growing evidence also demonstrated the cardioprotective effects of incretin-based therapy, especially during ischaemia-reperfusion (I/R) injury in both the animal models and in clinical studies. However, inconsistent reports exist regarding the use of these pharmacological interventions. In this article, a comprehensive review regarding both basic and clinical studies reporting the effects of GLP-1 and DPP-4 inhibitors on I/R hearts is presented and discussed. The consistent findings as well as controversial results are summarised, focusing on the effects of incretin on the infarct size, left ventricular function and haemodynamic improvement during an I/R injury.
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Affiliation(s)
- Kroekkiat Chinda
- Cardiac Electrophysiology Research and Training Centre, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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Kumfu S, Chattipakorn S, Chinda K, Fucharoen S, Chattipakorn N. T-type calcium channel blockade improves survival and cardiovascular function in thalassemic mice. Eur J Haematol 2012; 88:535-48. [PMID: 22404220 DOI: 10.1111/j.1600-0609.2012.01779.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Iron-overload cardiomyopathy is a major cause of morbidity and mortality in patients with thalassemia. However, the precise mechanisms of iron entry and sequestration in the heart are still unclear. Our previous study showed that Fe(2+) uptake in thalassemic cardiomyocytes are mainly mediated by T-type calcium channels (TTCC). Nevertheless, the role of TTCC as well as other transporters such as divalent metal transporter1 (DMT1) and L-type calcium channels (LTCC) as possible portals for iron entry into the heart in in vivo thalassemic mice under an iron-overload condition has not been investigated. METHODS An iron-overload condition was induced in genetically altered β-thalassemic mice and adult wild-type mice by feeding them with an iron diet (0.2% ferrocene w/w) for 3 months. Then, blockers for LTCC (verapamil and nifedipine), TTCC (efonidipine), and DMT1 (ebselen) as well as iron chelator desferoxamine (DFO) were given for 1 month with continuous iron feeding. RESULTS Treatment with LTCC, TTCC, DMT1 blockers, and DFO reduced cardiac iron deposit, cardiac malondialdehyde (MDA), plasma non-transferrin-bound iron, and improved heart rate variability and left ventricular (LV) function in thalassemic mice with iron overload. Only TTCC and DMT1 blockers and DFO reduced liver iron accumulation, liver MDA, plasma MDA, and decreased mortality rate in iron-overloaded thalassemic mice. CONCLUSIONS DMT1, LTCC, and TTCC played important roles for iron entry in the thalassemic heart under an iron-overloaded condition. Unlike LTCC blocker, TTCC blocker provided all benefits including attenuating iron deposit in both the heart and liver, reduced oxidative stress, and decreased mortality in iron-overloaded mice.
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Affiliation(s)
- Sirinart Kumfu
- Cardiac Electrophysiology Research and Training Center, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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Kumfu S, Chattipakorn S, Chinda K, Fucharoen S, Chattipakorn N. T-type calcium channel blockade improves survival and cardiovascular function in thalassemic mice. Eur J Haematol 2012. [PMID: 22404220 DOI: 10.1111/j.16000609.2012.01779.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Iron-overload cardiomyopathy is a major cause of morbidity and mortality in patients with thalassemia. However, the precise mechanisms of iron entry and sequestration in the heart are still unclear. Our previous study showed that Fe(2+) uptake in thalassemic cardiomyocytes are mainly mediated by T-type calcium channels (TTCC). Nevertheless, the role of TTCC as well as other transporters such as divalent metal transporter1 (DMT1) and L-type calcium channels (LTCC) as possible portals for iron entry into the heart in in vivo thalassemic mice under an iron-overload condition has not been investigated. METHODS An iron-overload condition was induced in genetically altered β-thalassemic mice and adult wild-type mice by feeding them with an iron diet (0.2% ferrocene w/w) for 3 months. Then, blockers for LTCC (verapamil and nifedipine), TTCC (efonidipine), and DMT1 (ebselen) as well as iron chelator desferoxamine (DFO) were given for 1 month with continuous iron feeding. RESULTS Treatment with LTCC, TTCC, DMT1 blockers, and DFO reduced cardiac iron deposit, cardiac malondialdehyde (MDA), plasma non-transferrin-bound iron, and improved heart rate variability and left ventricular (LV) function in thalassemic mice with iron overload. Only TTCC and DMT1 blockers and DFO reduced liver iron accumulation, liver MDA, plasma MDA, and decreased mortality rate in iron-overloaded thalassemic mice. CONCLUSIONS DMT1, LTCC, and TTCC played important roles for iron entry in the thalassemic heart under an iron-overloaded condition. Unlike LTCC blocker, TTCC blocker provided all benefits including attenuating iron deposit in both the heart and liver, reduced oxidative stress, and decreased mortality in iron-overloaded mice.
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Affiliation(s)
- Sirinart Kumfu
- Cardiac Electrophysiology Research and Training Center, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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Ayudhya NS, Parichatikanond P, Chinda K. Benign cystic teratoma of the parotid salivary gland: report of the first case in Thailand. J Med Assoc Thai 1991; 74:478-80. [PMID: 1797960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An extremely rare case of benign cystic teratoma of the parotid salivary gland is presented with a review of the literature. It was found in a 35-year-old Thai woman farmer who had had a history of a movable mass at the left parotid gland region for about 20 years. The microscopic examination revealed benign cystic teratoma of the parotid salivary gland. There is only one reported case in the literature, so, this is the second reported case.
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Affiliation(s)
- N S Ayudhya
- Department of Pathology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Sriussadaporn S, Chinda K, Vannasaeng S, Vichayanrat A, Nitiyanant W, Piraphatdist T. Sertoli-cell-only syndrome: a case report. J Med Assoc Thai 1990; 73:294-8. [PMID: 2212920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A 20-year-old male presented with a small hydrocoele in the left scrotal sac, bilateral small testes, and azoospermia with normal secondary sexual characteristics. Chromosome study revealed 46,XY. The results of hormonal and histopathological studies were consistent with Sertoli-cell-only syndrome.
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Affiliation(s)
- S Sriussadaporn
- Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Vichayanrat A, Soontrapa S, Bhanalaph T, Chinda K, Vaeusorn N, Bhavakula K. Virilizing adrenocortical adenoma with glucocorticoid abnormalities in a young woman: a case report with review of recent literatures. J Med Assoc Thai 1988; 71:699-705. [PMID: 2854840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Chinda K, Dhom G, Merkel KH, Jilg R. [Geographic pathology of malignant testicular tumors]. Pathologe 1983; 4:44-50. [PMID: 6844283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Panyathanya R, Thakerngpol K, Chinda K, Stitnimankarn T. The incidence of hepatitis B surface antigen in liver tissues of liver diseases in Thailand. J Med Assoc Thai 1982; 65:246-51. [PMID: 7119624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Koompirochana C, Chinda K, Pongpipat D. Hepatocellular carcinoma in infant: report of one case. J Med Assoc Thai 1981; 64:90-5. [PMID: 6262425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Sonakul D, Koompirochana C, Chinda K, Stitnimakarn T. Hepatic carcinoma with opisthorchiasis. Southeast Asian J Trop Med Public Health 1978; 9:215-9. [PMID: 214874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Eighty-seven cases of primary hepatic carcinoma associated with opisthorchiasis were reviewed. The prevalence of liver carcinoma among 154 cases of liver fluke infection was 56.6%. The tumours were classified histologically as cholangiocarcinoma in 67 cases (77%), hepatocellular carcinoma in 9 (10.3%), mixed hepatocholangiocarcinoma in 4, squamous carcinoma in 2, and undifferentiated carcinoma in 5. Metastases, found in 71 cases, occurred most frequently in the regional lymph nodes and lungs. There were numerous or moderate numbers of liver flukes in most of these cases.
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