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Oknińska M, Duda MK, Czarnowska E, Bierła J, Paterek A, Mączewski M, Mackiewicz U. Sex- and age-dependent susceptibility to ventricular arrhythmias in the rat heart ex vivo. Sci Rep 2024; 14:3460. [PMID: 38342936 PMCID: PMC10859380 DOI: 10.1038/s41598-024-53803-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/05/2024] [Indexed: 02/13/2024] Open
Abstract
The incidence of life-threatening ventricular arrhythmias, the most common cause of sudden cardiac death (SCD), depends largely on the arrhythmic substrate that develops in the myocardium during the aging process. There is a large deficit of comparative studies on the development of this substrate in both sexes, with a particular paucity of studies in females. To identify the substrates of arrhythmia, fibrosis, cardiomyocyte hypertrophy, mitochondrial density, oxidative stress, antioxidant defense and intracellular Ca2+ signaling in isolated cardiomyocytes were measured in the hearts of 3- and 24-month-old female and male rats. Arrhythmia susceptibility was assessed in ex vivo perfused hearts after exposure to isoproterenol (ISO) and hydrogen peroxide (H2O2). The number of ventricular premature beats (PVBs), ventricular tachycardia (VT) and ventricular fibrillation (VF) episodes, as well as intrinsic heart rate, QRS and QT duration, were measured in ECG signals recorded from the surfaces of the beating hearts. After ISO administration, VT/VFs were formed only in the hearts of males, mainly older ones. In contrast, H2O2 led to VT/VF formation in the hearts of rats of both sexes but much more frequently in older males. We identified several components of the arrhythmia substrate that develop in the myocardium during the aging process, including high spontaneous ryanodine receptor activity in cardiomyocytes, fibrosis of varying severity in different layers of the myocardium (nonheterogenic fibrosis), and high levels of oxidative stress as measured by nitrated tyrosine levels. All of these elements appeared at a much greater intensity in male individuals during the aging process. On the other hand, in aging females, antioxidant defense at the level of H2O2 detoxification, measured as glutathione peroxidase expression, was weaker than that in males of the same age. We showed that sex has a significant effect on the development of an arrhythmic substrate during aging. This substrate determines the incidence of life-threatening ventricular arrhythmias in the presence of additional stimuli with proarrhythmic potential, such as catecholamine stimulation or oxidative stress, which are constant elements in the pathomechanism of most cardiovascular diseases.
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Affiliation(s)
- Marta Oknińska
- Department of Clinical Physiology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Monika Katarzyna Duda
- Department of Clinical Physiology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Elżbieta Czarnowska
- Department of Pathology, The Children's Memorial Health Institute, Aleja Dzieci Polskich 20, 04-736, Warsaw, Poland
- Department of Pathology, Medical University of Warsaw, Żwirki i Wigury 61, 02-091, Warsaw, Poland
| | - Joanna Bierła
- Department of Pathology, The Children's Memorial Health Institute, Aleja Dzieci Polskich 20, 04-736, Warsaw, Poland
| | - Aleksandra Paterek
- Department of Clinical Physiology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Michał Mączewski
- Department of Clinical Physiology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Urszula Mackiewicz
- Department of Clinical Physiology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813, Warsaw, Poland.
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Zheng M, Chen S, Zeng Z, Cai H, Zhang H, Yu X, Wang W, Li X, Li CZ, He B, Deng KQ, Lu Z. Targeted ablation of the left middle cervical ganglion prevents ventricular arrhythmias and cardiac injury induced by AMI. Basic Res Cardiol 2024; 119:57-74. [PMID: 38151579 DOI: 10.1007/s00395-023-01026-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 12/29/2023]
Abstract
Cardiac sympathetic overactivation is a critical driver in the progression of acute myocardial infarction (AMI). The left middle cervical ganglion (LMCG) is an important extracardiac sympathetic ganglion. However, the regulatory effects of LMCG on AMI have not yet been fully documented. In the present study, we detected that the LMCG was innervated by abundant sympathetic components and exerted an excitatory effect on the cardiac sympathetic nervous system in response to stimulation. In canine models of AMI, targeted ablation of LMCG reduced the sympathetic indexes of heart rate variability and serum norepinephrine, resulting in suppressed cardiac sympathetic activity. Moreover, LMCG ablation could improve ventricular electrophysiological stability, evidenced by the prolonged ventricular effective refractory period, elevated action potential duration, increased ventricular fibrillation threshold, and enhanced connexin43 expression, consequently showing antiarrhythmic effects. Additionally, compared with the control group, myocardial infarction size, circulating cardiac troponin I, and myocardial apoptosis were significantly reduced, accompanied by preserved cardiac function in canines subjected to LMCG ablation. Finally, we performed the left stellate ganglion (LSG) ablation and compared its effects with LMCG destruction. The results indicated that LMCG ablation prevented ventricular electrophysiological instability, cardiac sympathetic activation, and AMI-induced ventricular arrhythmias with similar efficiency as LSG denervation. In conclusion, this study demonstrated that LMCG ablation suppressed cardiac sympathetic activity, stabilized ventricular electrophysiological properties and mitigated cardiomyocyte death, resultantly preventing ischemia-induced ventricular arrhythmias, myocardial injury, and cardiac dysfunction. Neuromodulation therapy targeting LMCG represented a promising strategy for the treatment of AMI.
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Affiliation(s)
- Meng Zheng
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Siyu Chen
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Ziyue Zeng
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Huanhuan Cai
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Hanyu Zhang
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Xiaomei Yu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Weina Wang
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Xianqing Li
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Chen-Ze Li
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Bo He
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Ke-Qiong Deng
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China.
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China.
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China.
| | - Zhibing Lu
- Department of Cardiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan 430000, Hubei, China.
- Cardiovascular Institute, Zhongnan Hospital of Wuhan University, Wuhan, China.
- Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China.
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Li X, Lu K, Guo S, Xue S, Lian F. TRPV4 blockade alleviates endoplasmic reticulum stress mediated apoptosis in hypoxia-induced cardiomyocyte injury. Cell Signal 2024; 114:110973. [PMID: 37981067 DOI: 10.1016/j.cellsig.2023.110973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/23/2023] [Accepted: 11/13/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Hypoxia-induced myocardial injury remains to be a huge health issue worldwide. Transient receptor potential vanilloid 4 (TRPV4) is a high-flux Ca2+ channel that is involved in numerous cardiovascular diseases. However, the role of TRPV4 in myocardial hypoxic injury remains unclear. Accordingly, this study aimed to investigate the antiapoptotic activity of TRPV4 inhibition and elucidate the underlying mechanisms in myocardial hypoxic injury. METHODS The ability of TRPV4 to modulate the endoplasmic reticulum stress (ERS) and apoptosis was assessed in vitro through the administration of the TRPV4 antagonist HC-067047 or the agonist GSK1016790A. Additionally, intracellular Ca2+ concentration was measured by Fluo-4 AM. RESULTS TRPV4 expression was significantly upregulated in hypoxic H9c2 cells compared with that in normoxic cardiomyocytes, accompanied with increased intracellular Ca2+ levels. Conversely, TRPV4 inhibition alleviated ERS in hypoxic H9c2 cells and prevented apoptosis, whereas TRPV4 agonist exacerbated such events. Furthermore, H9c2 cell apoptosis was attenuated with the administration of 4-PBA, an ERS inhibitor. CONCLUSION TRPV4 inhibition alleviates hypoxia-induced H9c2 cell apoptosis by mitigating ERS.
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Affiliation(s)
- Xueqing Li
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Kongli Lu
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Suxiang Guo
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Song Xue
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China.
| | - Feng Lian
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China.
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Liu J, Hu X. Association between glucose-to-lymphocyte ratio and in-hospital mortality in acute myocardial infarction patients. PLoS One 2023; 18:e0295602. [PMID: 38060551 PMCID: PMC10703328 DOI: 10.1371/journal.pone.0295602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Inflammation is involved in the development and progression of atherosclerosis. Recent studies indicated that glucose-to-lymphocyte ratio (GLR) level were significantly associated with the risk of mortality from inflammatory diseases, and showed a specific prognostic value. Herein, this study intended to explore the association between GLR level and in-hospital mortality in patients with acute myocardial infarction (AMI), and evaluate the predictive value of GLR on AMI prognosis. METHODS Data of patients with AMI were extracted from the Medical Information Mart for Intensive Care IV (MIMIC-IV) database in 2012-2019 in this retrospective cohort study. Univariate COX proportional hazard model was used to screen covariates. The associations between GLR and in-hospital mortality were evaluated using univariate and multivariate COX proportional hazard models. Subgroup analysis of age, gender, vasopressor use, SOFA scores, renal replacement therapy, coronary artery bypass graft, and β blockers use were performed. The evaluated index was hazard ratios (HRs) and 95% confidence intervals (CIs). In addition, the predictive performance of GLR, glucose, and lymphocytes on in-hospital mortality was assessed respectively. RESULTS Among eligible patients, 248 (13.74%) died in the hospital. After adjusting for covariates, we found that a higher GLR level was associated with an increased risk of in-hospital mortality [HR = 1.70, 95%CI: (1.24-2.34)]. This relationship was also found in patients who were male, aged ≥65 years old, did not have renal replacement therapy, coronary artery bypass graft, or β blockers, used vasopressor or not, and whatever the SOFA scores (all P<0.05). Moreover, the predictive performance of GLR on in-hospital mortality seemed superior to that of glucose or lymphocytes. CONCLUSION GLR may be a potential predictor for AMI prognosis, which provided some references for identifying and managing high-risk populations early in clinical.
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Affiliation(s)
- Jing Liu
- Department of Emergency (West Branch), The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, P.R. China
| | - Xiaogang Hu
- Department of Internal Medicine, Shanxi Agricultural University Hospital, Taiyuan, Shanxi, P.R. China
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Yang S, Bi Y, Wei Y, Li W, Liu J, Mao T, Tang Y. Muscone attenuates susceptibility to ventricular arrhythmia by inhibiting NLRP3 inflammasome activation in rats after myocardial infarction. J Biochem Mol Toxicol 2023; 37:e23458. [PMID: 37455625 DOI: 10.1002/jbt.23458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/14/2023] [Accepted: 07/04/2023] [Indexed: 07/18/2023]
Abstract
Fibrosis and abnormal expression of connexin 43 (Cx43) in the ventricle play vital roles in ventricular arrhythmias (VAs) after myocardial infarction (MI). Muscone, an active monomer of heart-protecting musk pill, has various biological activities, but its effect on susceptibility to VAs in rats with MI has not been determined. In the present study, we investigated the effects of muscone on ventricular inflammation, fibrosis, Cx43 expression, and the occurrence of VAs after MI. An MI model was established by ligating the proximal left anterior descending coronary artery. Then, the MI model rats were administered muscone (2 mg/kg/day) or vehicle (saline)via intragastric injection for 14 days. Cardiac function was evaluated by echocardiography, and an in vivo electrophysiological study was performed on Day 14. Cardiac inflammation, fibrosis, and Cx43 expression were determined by histochemical analysis and western blot analysis. Our results indicated that muscone treatment significantly improved cardiac function and inhibited ventricular inflammation, fibrosis, and nucleotide-binding oligomerization domain, leucine-rich repeat, and pyrin domain containing 3 (NLRP3) inflammasome activation. Electrocardiogrphy and electrophysiology studies showed that muscone shortened the QRS interval, QT interval, QTc interval, and action potential duration; prolonged the effective refractory period; and reduced susceptibility to VAs in rats after MI. Furthermore, Cx43 expression in the BZ was increased by muscone treatment, and this change was coupled by inhibition of the NLRP3/IL-1β/p38 MAPK pathway. Taken together, our results demonstrated that muscone reduces susceptibility to VA, mainly by decreasing ventricular inflammation and fibrosis, and attenuates abnormal Cx43 expression by inhibiting NLRP3 inflammasome activation after myocardial infarction in rats.
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Affiliation(s)
- Shuang Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
- Cardiovascular Research Institute, Wuhan University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, People's Republic of China
| | - Yingying Bi
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
- Cardiovascular Research Institute, Wuhan University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, People's Republic of China
| | - Yanzhao Wei
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
- Cardiovascular Research Institute, Wuhan University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, People's Republic of China
| | - Wei Li
- Department of Cardiology, Wuhan No. 1 Hospital, Wuhan Hospital of Traditional Chinese and Western Medicine, Wuhan, People's Republic of China
| | - Jiangwen Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
- Cardiovascular Research Institute, Wuhan University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, People's Republic of China
| | - Tuohua Mao
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
| | - Yanhong Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, People's Republic of China
- Cardiovascular Research Institute, Wuhan University, Wuhan, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan University, Wuhan, People's Republic of China
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Oliveira GMMD, Almeida MCCD, Rassi DDC, Bragança ÉOV, Moura LZ, Arrais M, Campos MDSB, Lemke VG, Avila WS, Lucena AJGD, Almeida ALCD, Brandão AA, Ferreira ADDA, Biolo A, Macedo AVS, Falcão BDAA, Polanczyk CA, Lantieri CJB, Marques-Santos C, Freire CMV, Pellegrini D, Alexandre ERG, Braga FGM, Oliveira FMFD, Cintra FD, Costa IBSDS, Silva JSN, Carreira LTF, Magalhães LBNC, Matos LDNJD, Assad MHV, Barbosa MM, Silva MGD, Rivera MAM, Izar MCDO, Costa MENC, Paiva MSMDO, Castro MLD, Uellendahl M, Oliveira Junior MTD, Souza OFD, Costa RAD, Coutinho RQ, Silva SCTFD, Martins SM, Brandão SCS, Buglia S, Barbosa TMJDU, Nascimento TAD, Vieira T, Campagnucci VP, Chagas ACP. Position Statement on Ischemic Heart Disease - Women-Centered Health Care - 2023. Arq Bras Cardiol 2023; 120:e20230303. [PMID: 37556656 PMCID: PMC10382148 DOI: 10.36660/abc.20230303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023] Open
Affiliation(s)
| | | | | | | | | | | | | | | | - Walkiria Samuel Avila
- Instituto do Coração (Incor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP - Brasil
| | | | | | | | | | - Andreia Biolo
- Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS - Brasil
| | | | | | | | | | - Celi Marques-Santos
- Universidade Tiradentes (UNIT), Aracaju, SE - Brasil
- Hospital São Lucas Rede D'Or São Luis, Aracaju, SE - Brasil
| | | | - Denise Pellegrini
- Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul (PUC-RS), Porto Alegre, RS - Brasil
| | | | - Fabiana Goulart Marcondes Braga
- Instituto do Coração (Incor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP - Brasil
| | | | | | | | | | - Lara Terra F Carreira
- Cardiologia Nuclear de Curitiba, Curitiba, PR - Brasil
- Hospital Pilar, Curitiba, PR - Brasil
| | | | | | | | | | | | | | | | | | | | | | - Marly Uellendahl
- Universidade Federal de São Paulo (UNIFESP), São Paulo, SP - Brasil
- DASA - Diagnósticos da América S/A, São Paulo, SP - Brasil
| | - Mucio Tavares de Oliveira Junior
- Instituto do Coração (Incor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP - Brasil
| | | | | | - Ricardo Quental Coutinho
- Faculdade de Ciências Médicas da Universidade de Pernambuco (UPE), Recife, PE - Brasil
- Hospital Universitário Osvaldo Cruz da Universidade de Pernambuco (UPE), Recife, PE - Brasil
| | | | - Sílvia Marinho Martins
- Pronto Socorro Cardiológico de Pernambuco da Universidade de Pernambuco (PROCAPE/UPE), Recife, PE - Brasil
| | | | - Susimeire Buglia
- Instituto do Coração (Incor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP - Brasil
- Instituto Dante Pazzanese de Cardiologia, São Paulo, SP - Brasil
| | | | | | - Thais Vieira
- Universidade Tiradentes (UNIT), Aracaju, SE - Brasil
- Rede D'Or, Aracaju, SE - Brasil
- Hospital Universitário da Universidade Federal de Sergipe (UFS), Aracaju, SE - Brasil
| | | | - Antonio Carlos Palandri Chagas
- Instituto do Coração (Incor) do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP - Brasil
- Centro Universitário Faculdade de Medicina ABC, Santo André, SP - Brasil
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