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Ghareghani A, Abbaszadeh S, Takhshid MA. The role of systemic inflammatory indices in predicting atrial fibrillation and its complications: a narrative review. Curr Med Res Opin 2024; 40:1657-1666. [PMID: 39210892 DOI: 10.1080/03007995.2024.2397074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
Atrial fibrillation (AF) is associated with increased morbidity and mortality. Inflammation and oxidative stress play critical roles in AF occurrence and its complications. Therefore, evaluating the circulating levels of inflammatory and oxidative stress biomarkers and their possible applications in AF diagnosis and management have been the focus of many efforts. The monocyte-to-high-density lipoprotein cholesterol ratio (MHR) and neutrophil-to-lymphocyte ratio (NLR) are two non-invasive, available, and established markers that serve as indicators of inflammation and oxidative stress. This review summarizes the current literature regarding alterations in the NLR, MHR, and other composite markers of systemic inflammation in AF patients. Moreover, this review discusses the clinical performance of these markers in predicting AF occurrence, recurrence, and disease outcomes. The PubMed, Scopus, and ScienceDirect online databases were searched for relevant studies using appropriate keywords, including "atrial fibrillation", "monocyte to high-density lipoprotein cholesterol ratio", and "neutrophil to lymphocyte ratio". The results of this review revealed the association of elevated levels of systemic inflammatory markers, specifically the NLR and MHR with AF and its complications. This finding indicates the potential role of subclinical inflammation in the development of AF, emphasizing its consideration in both the prevention and treatment of AF and associated complications. Despite these promising findings, the utilization of these markers in routine clinical settings faces challenges, including low specificity and sensitivity and varying cut-off values across different studies.
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Affiliation(s)
- Atefeh Ghareghani
- Cardiovascular Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Shahin Abbaszadeh
- Cardiovascular Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mohammad Ali Takhshid
- Division of Medical Biotechnology, Department of Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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2
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Liu Y, Huang M, Sun Y, Dai W. Exploring the effect of lifestyle behaviors and socioeconomic status on atrial fibrillation: the mediating role of 91 inflammatory cytokines. Front Cardiovasc Med 2024; 11:1401384. [PMID: 39328240 PMCID: PMC11424413 DOI: 10.3389/fcvm.2024.1401384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 08/26/2024] [Indexed: 09/28/2024] Open
Abstract
Background Atrial fibrillation (AF) is one of the most prevalent cardiac arrhythmias and has a significant economic and social burden. Whether it is associated with lifestyle behaviors and socioeconomic status is currently poorly understood. This study aimed to explore the relationship among these factors and determine the role of inflammatory cytokines. Method We investigated the causal effects of lifestyle behaviors and socioeconomic status on AF using bidirectional two-sample Mendelian randomization (MR). Instrumental variables were obtained from a publicly available genome-wide association study. A two-step MR was conducted to determine the mediating role of 91 inflammatory cytokines. Inverse variance weighted was used as the main method with four supplementary MR methods. To obtain more robust results, several sensitivity analyses were conducted. Result The results indicated that seven of the lifestyle behaviors [smoking initiation, vegetable intake, coffee consumption (cups/day), dozing, lifetime smoking index, napping, and alcohol abuse] were potential risk factors for AF. One socioeconomic status, education attainment (years of education), was causally associated with a decreased risk of AF. Moreover, we found that thymic stromal lymphopoietin, CD40l receptor, C-X-C motif chemokine 6, and C-X-C motif chemokine 11 levels mediated the causal effect, at proportions of 13.6%, 4.1%, 4.3%, and 6.9%, respectively. Conclusion Our findings provide insight into the relationship between lifestyle behaviors, socioeconomic status, and AF. Inflammatory cytokines are potential mediators of this relationship.
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Affiliation(s)
- Yiheng Liu
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Mingsheng Huang
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yue Sun
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Weiran Dai
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Gomez SE, Parizo J, Ermakov S, Larson J, Wallace R, Assimes T, Hlatky M, Stefanick M, Perez MV. Evaluation of the association between circulating IL-1β and other inflammatory cytokines and incident atrial fibrillation in a cohort of postmenopausal women. Am Heart J 2023; 258:157-167. [PMID: 36646198 PMCID: PMC10023332 DOI: 10.1016/j.ahj.2023.01.010] [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: 10/28/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND Inflammatory cytokines play a role in atrial fibrillation (AF). Interleukin (IL)-1β, which is targeted in the treatment of ischemic heart disease, has not been well-studied in relation to AF. METHODS Postmenopausal women from the Women's Health Initiative were included. Cox proportional hazards regression models were used to evaluate the association between log-transformed baseline cytokine levels and future AF incidence. Models were adjusted for body mass index, age, race, education, hypertension, diabetes, hyperlipidemia, current smoking, and history of coronary heart disease, congestive heart failure, or peripheral artery disease. RESULTS Of 16,729 women, 3,943 developed AF over an average of 8.5 years. Racial and ethnic groups included White (77.4%), Black/African-American (16.1%), Asian (2.7%), American Indian/Alaska Native (1.0%), and Hispanic (5.5%). Baseline IL-1β log continuous levels were not significantly associated with incident AF (HR 0.86 per 1 log [pg/mL] increase, P= .24), similar to those of other inflammatory cytokines, IL-7, IL-8, IL-10, IGF-1, and TNF-α. There were significant associations between C-reactive protein (CRP) and IL-6 with incident AF. CONCLUSIONS In this large cohort of postmenopausal women, there was no significant association between IL-1β and incident AF, although downstream effectors, CRP and IL-6, were associated with incident AF.
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Affiliation(s)
- Sofia E Gomez
- Department of Medicine, Stanford, University School of Medicine, Stanford, CA
| | - Justin Parizo
- Division of Cardiovascular Medicine, Department of Medicine, Stanford, University School of Medicine, Stanford, CA
| | - Simon Ermakov
- Division of Cardiovascular Medicine, Department of Medicine, University of California San Francisco, San Francisco, CA
| | | | - Robert Wallace
- College of Public Health, University of Iowa, Iowa City, IA
| | - Themistocles Assimes
- Division of Cardiovascular Medicine, Department of Medicine, Stanford, University School of Medicine, Stanford, CA
| | - Mark Hlatky
- Division of Cardiovascular Medicine, Department of Medicine, Stanford, University School of Medicine, Stanford, CA; Department of Health Research and Policy, Stanford University, Stanford, CA
| | - Marcia Stefanick
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA
| | - Marco V Perez
- Division of Cardiovascular Medicine, Department of Medicine, Stanford, University School of Medicine, Stanford, CA.
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Xu Y, Lin Z, Zhu C, Song D, Wu B, Ji K, Li J. The Neutrophil Percentage-to-Albumin Ratio is Associated with All-Cause Mortality in Patients with Atrial Fibrillation: A Retrospective Study. J Inflamm Res 2023; 16:691-700. [PMID: 36844255 PMCID: PMC9946812 DOI: 10.2147/jir.s394536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/18/2023] [Indexed: 02/20/2023] Open
Abstract
Objective The present study aimed to evaluate the relationship between all-cause mortality and the neutrophil percentage-to-albumin ratio (NPAR) in patients with atrial fibrillation (AF). Methods We obtained clinical information from patients with AF from the Medical Information Mart for Intensive Care-IV version 2.0 (MIMIC-IV) database and the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University (WMU). The clinical endpoints were all-cause death measured at 30-day, 90-day, and one-year intervals. For endpoints associated with the NPAR, logistic regression models were used to calculate odds ratios (OR) with 95% confidence intervals (CI). Receiver operating characteristic (ROC) curves and area under the curve (AUC) were developed to compare the ability of different inflammatory biomarkers to predict 90-day mortality in patients with AF. Results Higher NPAR was associated with a higher risk of 30-day (OR 2.08, 95% CI 1.58-2.75), 90-day (OR 2.07, 95% CI 1.61-2.67), and one-year mortality (OR 1.60, 95% CI 1.26-2.04) in patients with AF in 2813 patients from MIMIC-IV. The predictive performance of NPAR (AUC = 0.609) for 90-day mortality was better than that of neutrophil-to-lymphocyte ratio (NLR) (AUC = 0.565, P < 0.001), and platelet-to-lymphocyte ratio (PLR) (AUC = 0.528, P < 0.001). When NPAR and sequential organ failure assessment (SOFA) were combined, the AUC increased from 0.609 to 0.674 (P < 0.001). Higher NPAR was associated with a higher risk of 30-day mortality (OR 2.54, 95% CI 1.02-6.30) and 90-day mortality (OR 2.76, 95% CI 1.09-7.01) in 283 patients from WMU. Conclusion An increased 30-day, 90-day, and one-year mortality risk among patients with AF were linked to a higher NPAR in MIMIC-IV. NPAR was thought to be a good predictor of 90-day all-cause mortality. Higher NPAR was associated with a higher risk of 30-day and 90-day mortality in WMU.
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Affiliation(s)
- Yuxuan Xu
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China
| | - Zhihui Lin
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China
| | - Chenxi Zhu
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China
| | - Dongyan Song
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China
| | - Bosen Wu
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China
| | - Kangting Ji
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China,Correspondence: Kangting Ji; Jin Li, Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Xueyuanxi Road, No. 109, Wenzhou, 325027, People’s Republic of China, Tel/Fax +86-577-85676627, Email ;
| | - Jin Li
- Department of Cardiology, Key Laboratory of Panvascular Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, People’s Republic of China
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Börschel CS, Ortega-Alonso A, Havulinna AS, Jousilahti P, Salmi M, Jalkanen S, Veikko S, Niiranen T, Schnabel RB. Inflammatory proteomics profiling for prediction of incident atrial fibrillation. Heart 2023:heartjnl-2022-321959. [PMID: 36801832 DOI: 10.1136/heartjnl-2022-321959] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 02/03/2023] [Indexed: 02/19/2023] Open
Abstract
OBJECTIVE Atrial fibrillation (AF) has emerged as a common condition in older adults. Cardiovascular risk factors only explain about 50% of AF cases. Inflammatory biomarkers may help close this gap as inflammation can alter atrial electrophysiology and structure. This study aimed to determine a cytokine biomarker profile for this condition in the community using a proteomics approach. METHODS This study uses cytokine proteomics in participants of the Finnish population-based FINRISK cohort studies 1997/2002. Risk models for 46 cytokines were developed to predict incident AF using Cox regressions. Furthermore, the association of participants' C reactive protein (CRP) and N-terminal pro B-type natriuretic peptide (NT-proBNP) concentrations with incident AF was examined. RESULTS In 10 744 participants (mean age of 50.9 years, 51.3% women), 1246 cases of incident AF were observed (40.5% women). The main analyses, adjusted for participants' sex and age, suggested that higher concentrations of macrophage inflammatory protein-1β (HR=1.11; 95% CI 1.04, 1.17), hepatocyte growth factor (HR=1.12; 95% CI 1.05, 1.19), CRP (HR=1.17; 95% CI 1.10, 1.24) and NT-proBNP (HR=1.58; 95% CI 1.45, 1.71) were associated with increased risk of incident AF. In further clinical variable-adjusted models, only NT-proBNP remained statistically significant. CONCLUSION Our study confirmed NT-proBNP as a strong predictor for AF. Observed associations of circulating inflammatory cytokines were primarily explained by clinical risk factors and did not improve risk prediction. The potential mechanistic role of inflammatory cytokines measured in a proteomics approach remains to be further elucidated.
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Affiliation(s)
- Christin S Börschel
- Department of Cardiology, University Heart and Vascular Centre Hamburg-Eppendorf, Hamburg, Germany .,German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Alfredo Ortega-Alonso
- Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland.,Neuroscience Center, University of Helsinki, Helsinki, Finland.,Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Aki S Havulinna
- Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland.,Institute for Molecular Medicine Finland, FIMM - HiLIFE, Helsinki, Finland
| | - Pekka Jousilahti
- Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Marko Salmi
- MediCity Research Laboratory, Institute of Biomedicine and InFLAMES flagship, Turku, Finland
| | - Sirpa Jalkanen
- MediCity Research Laboratory, Institute of Biomedicine and InFLAMES flagship, Turku, Finland
| | - Salomaa Veikko
- Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Teemu Niiranen
- Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland.,Department of Internal Medicine, University of Turku, Turku, Finland.,Division of Medicine, Turku University Hospital, Turku, Finland
| | - Renate B Schnabel
- Department of Cardiology, University Heart and Vascular Centre Hamburg-Eppendorf, Hamburg, Germany.,German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
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Ihara K, Sasano T. Role of Inflammation in the Pathogenesis of Atrial Fibrillation. Front Physiol 2022; 13:862164. [PMID: 35492601 PMCID: PMC9047861 DOI: 10.3389/fphys.2022.862164] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/21/2022] [Indexed: 12/15/2022] Open
Abstract
Atrial fibrillation (AF) is one of the most common arrhythmias encountered in clinical practice. AF is a major risk factor for stroke, which is associated with high mortality and great disability and causes a significant burden on society. With the development of catheter ablation, AF has become a treatable disease, but its therapeutic outcome has been limited so far. In persistent and long-standing AF, the expanded AF substrate is difficult to treat only by ablation, and a better understanding of the mechanism of AF substrate formation will lead to the development of a new therapeutic strategy for AF. Inflammation is known to play an important role in the substrate formation of AF. Inflammation causes and accelerates the electrical and structural remodeling of the atria via pro-inflammatory cytokines and other inflammatory molecules, and enhances the AF substrate, leading to the maintenance of AF and further inflammation, which forms a vicious spiral, so-called "AF begets AF". Breaking this vicious cycle is expected to be a key therapeutic intervention in AF. In this review, we will discuss the relationship between AF and inflammation, the inflammatory molecules included in the AF-related inflammatory process, and finally the potential of those molecules as a therapeutic target.
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Affiliation(s)
- Kensuke Ihara
- Department of Bio-informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tetsuo Sasano
- Department of Cardiovascular Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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7
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Wu LD, Li F, Chen JY, Zhang J, Qian LL, Wang RX. Analysis of potential genetic biomarkers using machine learning methods and immune infiltration regulatory mechanisms underlying atrial fibrillation. BMC Med Genomics 2022; 15:64. [PMID: 35305619 PMCID: PMC8934464 DOI: 10.1186/s12920-022-01212-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/14/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Objective
We aimed to screen out biomarkers for atrial fibrillation (AF) based on machine learning methods and evaluate the degree of immune infiltration in AF patients in detail.
Methods
Two datasets (GSE41177 and GSE79768) related to AF were downloaded from Gene expression omnibus (GEO) database and merged for further analysis. Differentially expressed genes (DEGs) were screened out using “limma” package in R software. Candidate biomarkers for AF were identified using machine learning methods of the LASSO regression algorithm and SVM-RFE algorithm. Receiver operating characteristic (ROC) curve was employed to assess the diagnostic effectiveness of biomarkers, which was further validated in another independent validation dataset of GSE14975. Moreover, we used CIBERSORT to study the proportion of infiltrating immune cells in each sample, and the Spearman method was used to explore the correlation between biomarkers and immune cells.
Results
129 DEGs were identified, and CYBB, CXCR2, and S100A4 were identified as key biomarkers of AF using LASSO regression and SVM-RFE algorithm. Both in the training dataset and the validation dataset, CYBB, CXCR2, and S100A4 showed favorable diagnostic effectiveness. Immune infiltration analysis indicated that, compared with sinus rhythm (SR), the atrial samples of patients with AF contained a higher T cells gamma delta, neutrophils and mast cells resting, whereas T cells follicular helper were relatively lower. Correlation analysis demonstrated that CYBB, CXCR2, and S100A4 were significantly correlated with the infiltrating immune cells.
Conclusions
In conclusion, this study suggested that CYBB, CXCR2, and S100A4 are key biomarkers of AF correlated with infiltrating immune cells, and infiltrating immune cells play pivotal roles in AF.
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Raman B, Bluemke DA, Lüscher TF, Neubauer S. Long COVID: post-acute sequelae of COVID-19 with a cardiovascular focus. Eur Heart J 2022; 43:1157-1172. [PMID: 35176758 PMCID: PMC8903393 DOI: 10.1093/eurheartj/ehac031] [Citation(s) in RCA: 298] [Impact Index Per Article: 149.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 12/20/2021] [Accepted: 01/17/2022] [Indexed: 02/07/2023] Open
Abstract
Emerging as a new epidemic, long COVID or post-acute sequelae of coronavirus disease 2019 (COVID-19), a condition characterized by the persistence of COVID-19 symptoms beyond 3 months, is anticipated to substantially alter the lives of millions of people globally. Cardiopulmonary symptoms including chest pain, shortness of breath, fatigue, and autonomic manifestations such as postural orthostatic tachycardia are common and associated with significant disability, heightened anxiety, and public awareness. A range of cardiovascular (CV) abnormalities has been reported among patients beyond the acute phase and include myocardial inflammation, myocardial infarction, right ventricular dysfunction, and arrhythmias. Pathophysiological mechanisms for delayed complications are still poorly understood, with a dissociation seen between ongoing symptoms and objective measures of cardiopulmonary health. COVID-19 is anticipated to alter the long-term trajectory of many chronic cardiac diseases which are abundant in those at risk of severe disease. In this review, we discuss the definition of long COVID and its epidemiology, with an emphasis on cardiopulmonary symptoms. We further review the pathophysiological mechanisms underlying acute and chronic CV injury, the range of post-acute CV sequelae, and impact of COVID-19 on multiorgan health. We propose a possible model for referral of post-COVID-19 patients to cardiac services and discuss future directions including research priorities and clinical trials that are currently underway to evaluate the efficacy of treatment strategies for long COVID and associated CV sequelae.
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Affiliation(s)
- Betty Raman
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research, University of Oxford, National Institute for Health Research (NIHR) Oxford Biomedical Research Centre (BRC), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - David A. Bluemke
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 3252 Clinical Science Center, 600 Highland Ave, Madison, WI 53792, USA
- Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, 3252 Clinical Science Center, 600 Highland Ave, Madison, WI 53792, USA
| | - Thomas F. Lüscher
- Royal Brompton & Harefield Hospitals and National Heart and Lung Institute, Imperial College, London, UK
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Stefan Neubauer
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford Centre for Clinical Magnetic Resonance Research, University of Oxford, National Institute for Health Research (NIHR) Oxford Biomedical Research Centre (BRC), Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
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Chen YL, Chen YC, Wang HT, Chang YT, Fang YN, Hsueh S, Liu WH, Lin PT, Hsu PY, Su MC, Huang KT, Lin MC. The Impact of Intermittent Hypoxemia on Left Atrial Remodeling in Patients with Obstructive Sleep Apnea Syndrome. Life (Basel) 2022; 12:life12020148. [PMID: 35207436 PMCID: PMC8874769 DOI: 10.3390/life12020148] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/13/2022] [Accepted: 01/19/2022] [Indexed: 01/01/2023] Open
Abstract
Obstructive sleep apnea syndrome (OSAS) is a significant risk factor for left atrial (LA) remodeling. Intermittent hypoxemia occurs during the sleep cycle in patients with OSAS and plays a crucial role in cardiovascular pathologies such as stroke, arrhythmia, and coronary artery disease. However, there is very little information about the role of intermittent hypoxemia in LA remodeling in patients with OSAS. In total, 154 patients with sleep-related breathing disorders (SRBD) were prospectively recruited for this study. All enrolled SRBD patients underwent polysomnography and echocardiography. Significant OSAS was defined as an oxygen desaturation index (ODI) of ≥10 per hour. Intermittent hypoxia/reoxygenation (IHR) stimulation was used to test the effect of hypoxia on the viability, reactive oxygen species, apoptosis, and inflammation-associated cytokine expression in the HL-1 cell line. To investigate the effect of patients’ exosomes on HIF-1 and inflammation-associated cytokine expression, as well as the relationship between ODI and their expression, exosomes were purified from the plasma of 95 patients with SRBD and incubated in HL-1 cells. The LA size was larger in patients with significant OSAS than in those without. There was a significant association between ODI, lowest SpO2, mean SpO2, and LA size (all p < 0.05) but not between the apnea–hypopnea index and LA size. IHR condition caused increased LDH activity, reactive oxygen species (ROS) levels, and apoptosis in HL-1 cells and decreased cellular viability (all p < 0.05). The expression of HIF-1α, TNF-α, IL-6, and TGF-β increased in the IHR condition compared with the control (all p < 0.05). The expression of HIF-1α, IL-1β, and IL-6 increased in the HL-1 cells incubated with exosomes from those patients with significant OSAS than those without (all p < 0.05). There was a significantly positive correlation between ODI and the expression of HIF-1α, TNF-α, IL-1β, IL-6, and TGF-β; a significantly negative correlation between mean SpO2 and IL-6 and TGF-β; and a significantly negative correlation between the lowest SpO2 and HIF-1α (all p < 0.05). In conclusion, intermittent hypoxemia was strongly associated with LA remodeling, which might be through increased ROS levels, LDH activity, apoptosis, and the expression of HIF-1α and inflammation-associated cytokines.
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Affiliation(s)
- Yung-Lung Chen
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (Y.-L.C.); (Y.-N.F.); (S.H.); (W.-H.L.); (P.-T.L.)
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-C.C.); (H.-T.W.); (Y.-T.C.)
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Yung-Che Chen
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-C.C.); (H.-T.W.); (Y.-T.C.)
- Department of Internal Medicine, Division of Pulmonary & Critical Care Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (P.-Y.H.); (M.-C.S.); (K.-T.H.)
| | - Hui-Ting Wang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-C.C.); (H.-T.W.); (Y.-T.C.)
- Emergency Department, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Ya-Ting Chang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-C.C.); (H.-T.W.); (Y.-T.C.)
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Yen-Nan Fang
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (Y.-L.C.); (Y.-N.F.); (S.H.); (W.-H.L.); (P.-T.L.)
| | - Shukai Hsueh
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (Y.-L.C.); (Y.-N.F.); (S.H.); (W.-H.L.); (P.-T.L.)
| | - Wen-Hao Liu
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (Y.-L.C.); (Y.-N.F.); (S.H.); (W.-H.L.); (P.-T.L.)
| | - Pei-Ting Lin
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (Y.-L.C.); (Y.-N.F.); (S.H.); (W.-H.L.); (P.-T.L.)
| | - Po-Yuan Hsu
- Department of Internal Medicine, Division of Pulmonary & Critical Care Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (P.-Y.H.); (M.-C.S.); (K.-T.H.)
| | - Mao-Chang Su
- Department of Internal Medicine, Division of Pulmonary & Critical Care Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (P.-Y.H.); (M.-C.S.); (K.-T.H.)
| | - Kuo-Tung Huang
- Department of Internal Medicine, Division of Pulmonary & Critical Care Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (P.-Y.H.); (M.-C.S.); (K.-T.H.)
| | - Meng-Chih Lin
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-C.C.); (H.-T.W.); (Y.-T.C.)
- Department of Internal Medicine, Division of Pulmonary & Critical Care Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan; (P.-Y.H.); (M.-C.S.); (K.-T.H.)
- Correspondence: ; Tel.: +886-7-731-7123 (ext. 8300)
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Chen YL, Wang HT, Lin PT, Chuang JH, Yang MY. Macrophage Inflammatory Protein-1 Alpha, a Potential Biomarker for Predicting Left Atrial Remodeling in Patients With Atrial Fibrillation. Front Cardiovasc Med 2021; 8:784792. [PMID: 34957262 PMCID: PMC8695724 DOI: 10.3389/fcvm.2021.784792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/17/2021] [Indexed: 11/13/2022] Open
Abstract
Objectives: Left atrial (LA) remodeling itself is an independent risk factor for ischemic stroke and mortality, with or without atrial fibrillation (AF). Macrophage inflammatory protein-1 alpha (MIP-1α) has been reported to be involved in the induction of autoimmune myocarditis and dilated cardiomyopathy. Little is known about whether MIP-1α can be used to predict LA remodeling, especially in patients with AF. Methods: We prospectively enrolled 78 patients who had received a cardiac implantable electronic device due to sick sinus syndrome in order to define AF accurately. AF was diagnosed clinically before enrollment, according to 12-lead electrocardiography (ECG) and 24-h Holter test in 54 (69%) patients. The serum cytokine levels and the mRNA expression levels of peripheral blood leukocytes were checked and echocardiographic study was performed on the same day within 1 week after the patients were enrolled into the study. The 12-lead ECG and 24-h Holter test were performed on the same day of the patients' enrollment, and the device interrogation was performed every 3 months after enrollment. The enrolled patients were clinically followed up for 1 year. Results: There was no difference in baseline characteristics, cytokine levels and mRNA expression between patients with and without AF. Larger LA volume was positively correlated with higher levels of MIP-1α (r = 0.461, p ≤ 0.001) and the atrial high-rate episodes (AHREs) burden (r = 0.593, p < 0.001), and negatively correlated with higher levels of transforming growth factor (TGF)-β1 (r = −0.271, p = 0.047) and TGF-β3 (r = −0.279, p = 0.041). The higher AHREs burden and MIP-1α level could predict LA volume independently. The mRNA expression of RORC was negatively associated with the MIP-1α level. Conclusions: This study showed that higher MIP-1α was significantly associated with LA remodeling and may have the potentials to predict LA remodeling in terms of a larger LA volume, and that circadian gene derangement might affect the expression of MIP-1α.
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Affiliation(s)
- Yung-Lung Chen
- Section of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.,School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,College of Medicine, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Hui-Ting Wang
- Emergency Department, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Pei-Ting Lin
- Section of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.,School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Jiin-Haur Chuang
- College of Medicine, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan.,Division of Pediatric Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Ming-Yu Yang
- College of Medicine, Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan, Taiwan.,Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
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11
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Koniari I, Artopoulou E, Velissaris D, Ainslie M, Mplani V, Karavasili G, Kounis N, Tsigkas G. Biomarkers in the clinical management of patients with atrial fibrillation and heart failure. J Geriatr Cardiol 2021; 18:908-951. [PMID: 34908928 PMCID: PMC8648548 DOI: 10.11909/j.issn.1671-5411.2021.11.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Atrial fibrillation (AF) and heart failure (HF) are two cardiovascular diseases with an increasing prevalence worldwide. These conditions share common pathophysiologiesand frequently co-exit. In fact, the occurrence of either condition can 'cause' the development of the other, creating a new patient group that demands different management strategies to that if they occur in isolation. Regardless of the temproral association of the two conditions, their presence is linked with adverse cardiovascular outcomes, increased rate of hospitalizations, and increased economic burden on healthcare systems. The use of low-cost, easily accessible and applicable biomarkers may hasten the correct diagnosis and the effective treatment of AF and HF. Both AF and HF effect multiple physiological pathways and thus a great number of biomarkers can be measured that potentially give the clinician important diagnostic and prognostic information. These will then guide patient centred therapeutic management. The current biomarkers that offer potential for guiding therapy, focus on the physiological pathways of miRNA, myocardial stretch and injury, oxidative stress, inflammation, fibrosis, coagulation and renal impairment. Each of these has different utility in current clinincal practice.
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Affiliation(s)
- Ioanna Koniari
- Manchester Heart Institute, Manchester University Foundation Trust, Manchester, United Kingdom
| | - Eleni Artopoulou
- Department of Internal Medicine, University Hospital of Patras, Patras, Greece
| | | | - Mark Ainslie
- Manchester Heart Institute, Manchester University Foundation Trust, Manchester, United Kingdom
- Division of Cardiovascular Sciences, University of Manchester
| | - Virginia Mplani
- Department of Cardiology, University Hospital of Patras, Patras, Greece
| | - Georgia Karavasili
- Manchester Heart Institute, Manchester University Foundation Trust, Manchester, United Kingdom
| | - Nicholas Kounis
- Department of Cardiology, University Hospital of Patras, Patras, Greece
| | - Grigorios Tsigkas
- Department of Cardiology, University Hospital of Patras, Patras, Greece
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12
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Papathanasiou KA, Giotaki SG, Vrachatis DA, Siasos G, Lambadiari V, Iliodromitis KE, Kossyvakis C, Kaoukis A, Raisakis K, Deftereos G, Papaioannou TG, Giannopoulos G, Avramides D, Deftereos SG. Molecular Insights in Atrial Fibrillation Pathogenesis and Therapeutics: A Narrative Review. Diagnostics (Basel) 2021; 11:diagnostics11091584. [PMID: 34573926 PMCID: PMC8470040 DOI: 10.3390/diagnostics11091584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 12/15/2022] Open
Abstract
The prevalence of atrial fibrillation (AF) is bound to increase globally in the following years, affecting the quality of life of millions of people, increasing mortality and morbidity, and beleaguering health care systems. Increasingly effective therapeutic options against AF are the constantly evolving electroanatomic substrate mapping systems of the left atrium (LA) and ablation catheter technologies. Yet, a prerequisite for better long-term success rates is the understanding of AF pathogenesis and maintenance. LA electrical and anatomical remodeling remains in the epicenter of current research for novel diagnostic and treatment modalities. On a molecular level, electrical remodeling lies on impaired calcium handling, enhanced inwardly rectifying potassium currents, and gap junction perturbations. In addition, a wide array of profibrotic stimuli activates fibroblast to an increased extracellular matrix turnover via various intermediaries. Concomitant dysregulation of the autonomic nervous system and the humoral function of increased epicardial adipose tissue (EAT) are established mediators in the pathophysiology of AF. Local atrial lymphomononuclear cells infiltrate and increased inflammasome activity accelerate and perpetuate arrhythmia substrate. Finally, impaired intracellular protein metabolism, excessive oxidative stress, and mitochondrial dysfunction deplete atrial cardiomyocyte ATP and promote arrhythmogenesis. These overlapping cellular and molecular alterations hinder us from distinguishing the cause from the effect in AF pathogenesis. Yet, a plethora of therapeutic modalities target these molecular perturbations and hold promise in combating the AF burden. Namely, atrial selective ion channel inhibitors, AF gene therapy, anti-fibrotic agents, AF drug repurposing, immunomodulators, and indirect cardiac neuromodulation are discussed here.
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Affiliation(s)
- Konstantinos A. Papathanasiou
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (K.A.P.); (S.G.G.); (D.A.V.); (G.S.); (V.L.); (T.G.P.)
| | - Sotiria G. Giotaki
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (K.A.P.); (S.G.G.); (D.A.V.); (G.S.); (V.L.); (T.G.P.)
| | - Dimitrios A. Vrachatis
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (K.A.P.); (S.G.G.); (D.A.V.); (G.S.); (V.L.); (T.G.P.)
| | - Gerasimos Siasos
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (K.A.P.); (S.G.G.); (D.A.V.); (G.S.); (V.L.); (T.G.P.)
| | - Vaia Lambadiari
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (K.A.P.); (S.G.G.); (D.A.V.); (G.S.); (V.L.); (T.G.P.)
| | | | - Charalampos Kossyvakis
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (C.K.); (A.K.); (K.R.); (G.D.); (D.A.)
| | - Andreas Kaoukis
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (C.K.); (A.K.); (K.R.); (G.D.); (D.A.)
| | - Konstantinos Raisakis
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (C.K.); (A.K.); (K.R.); (G.D.); (D.A.)
| | - Gerasimos Deftereos
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (C.K.); (A.K.); (K.R.); (G.D.); (D.A.)
| | - Theodore G. Papaioannou
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (K.A.P.); (S.G.G.); (D.A.V.); (G.S.); (V.L.); (T.G.P.)
| | | | - Dimitrios Avramides
- Department of Cardiology, “G. Gennimatas” General Hospital of Athens, 11527 Athens, Greece; (C.K.); (A.K.); (K.R.); (G.D.); (D.A.)
| | - Spyridon G. Deftereos
- Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; (K.A.P.); (S.G.G.); (D.A.V.); (G.S.); (V.L.); (T.G.P.)
- Correspondence: ; Tel.: +30-21-0583-2355
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13
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Li S, Jiang Z, Chao X, Jiang C, Zhong G. Identification of key immune-related genes and immune infiltration in atrial fibrillation with valvular heart disease based on bioinformatics analysis. J Thorac Dis 2021; 13:1785-1798. [PMID: 33841968 PMCID: PMC8024788 DOI: 10.21037/jtd-21-168] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background Atrial fibrillation (AF) is the most common persistent arrhythmia. Valvular heart disease (VHD) and AF frequently coexist. In our study, from performing bioinformatics analysis, we sought to identify immune-related genes (IRGs) and explore the role of immune cell infiltration in AF-VHD in depth, aiming at investigating the potential molecular mechanism and developing new therapeutic targets for AF, including AF-VHD. Methods The gene expression of the GSE41177 and GSE79768 datasets were downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) were analyzed via the limma package in Bioconductor with R software. Differentially expressed immune-related genes (DEIRGs) were selected via combination ImmPort database with DEGs, and the enrichment function and pathway analysis were explored. A protein-protein interaction (PPI) network was built with a Search Tool for the Retrieval of Interacting Genes/Proteins plugin in Cytoscape. The CIBERSORT algorithm was used to evaluate immune infiltration in the left atrial (LA) tissues between AF-VHD and sinus rhythm (SR) patients. Finally, a correlation analysis between key DEIRGs and infiltrating immune cells was performed. Results A total of 130 DEIRGs were detected. Enrichment function of DEIRGs demonstrated that they are significant in immune and inflammatory responses. The key DEIRGs assessed by the PPI network and involved in both the immune and inflammatory responses were the C-X-C motif chemokine ligand (CXCL) 1, pro-platelet basic protein (PPBP), CXCL12, and C-C motif chemokine ligand 4 (CCL4). The immune infiltration findings indicated that, compared with the LA tissues from SR patients, the tissues from AF-VHD patients contained a higher proportion of gamma delta T cells, but a lower proportion of CD8 and regulatory T cells. The results of correlation analysis demonstrated that CXCL1 was positively correlated with activated mast cells and significantly negatively correlated with resting mast cells. PPBP, CXCL12, and CCL4 were positively correlated with the infiltration of various immune cells, such as neutrophils, plasma cells, and resting dendritic cells. Conclusions The key immune-related genes and the differences in immune infiltration in LA tissues play an essential role in the occurrence and progression of AF-VHD.
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Affiliation(s)
- Shuo Li
- Department of Cardiology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Zhiyuan Jiang
- Department of Cardiology, Division of Hypertension, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Xiaoying Chao
- Department of Cardiology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Chenyang Jiang
- Department of Cardiology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Guoqiang Zhong
- Department of Cardiology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
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14
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Nso N, Bookani KR, Metzl M, Radparvar F. Role of inflammation in atrial fibrillation: A comprehensive review of current knowledge. J Arrhythm 2021; 37:1-10. [PMID: 33664879 PMCID: PMC7896450 DOI: 10.1002/joa3.12473] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/24/2020] [Accepted: 11/14/2020] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Atrial fibrillation (AF) is one of the most common cardiac disorders affecting adults and is associated with significant morbidity and mortality. Efforts to manage AF through anti-arrhythmics and rate control have been largely unsatisfactory. It has become clear that AF causes structural alterations in the atrial myocardium that propagate further AF, and that some of these alterations are the result of inflammation. METHODS An in-depth review of the available literature was undertaken using Google Scholar and keyword searches including [Atrial fibrillation] in combination with [inflammatory markers], [myocardial fibrosis], and [immunomodulators], limiting the search to English language articles. All articles were reviewed for relevance and collated by the author. RESULTS Multiple markers of inflammation have been shown to be elevated in AF and to predict responses to treatments of AF including anti-arrhythmics and cardioversion. The nidus of inflammation is not clear but seems to be related to the pulmonary veins. CONCLUSIONS The inflammatory cascade induces fibrotic changes in the myocardium, an arrhythmogenic process that stimulates further inflammation. Advances in treatment are focusing on biological agents and immunomodulators that inhibit the inflammatory cascade.
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Affiliation(s)
- Nso Nso
- Department of Internal MedicineDivision of CardiologyIcahn School of Medicine at Mount Sinai/Queens (Queens Hospital Center)JamaicaNYUSA
| | - Kaveh R. Bookani
- Department of MedicineDivision of Cardiovascular Medicine (Northshore Program)University of ChicagoEvanstonILUSA
| | - Mark Metzl
- Department of MedicineDivision of Cardiovascular Medicine (Northshore Program)University of ChicagoEvanstonILUSA
| | - Farshid Radparvar
- Department of Internal MedicineDivision of CardiologyIcahn School of Medicine at Mount Sinai/Queens (Queens Hospital Center)JamaicaNYUSA
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15
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Yano M, Egami Y, Ukita K, Kawamura A, Nakamura H, Matsuhiro Y, Yasumoto K, Tsuda M, Okamoto N, Tanaka A, Matsunaga-Lee Y, Shutta R, Nishino M, Tanouchi J. Atrial fibrillation type modulates the clinical predictive value of neutrophil-to-lymphocyte ratio for atrial fibrillation recurrence after catheter ablation. IJC HEART & VASCULATURE 2020; 31:100664. [PMID: 33163615 PMCID: PMC7599425 DOI: 10.1016/j.ijcha.2020.100664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/11/2020] [Accepted: 10/12/2020] [Indexed: 10/31/2022]
Abstract
BACKGROUND The neutrophil-to-lymphocyte ratio (NLR) has been proposed as an indicator of a systemic inflammatory response. There are baseline differences in the inflammation status between paroxysmal atrial fibrillation (PAF) and persistent AF (PerAF). The NLR changes and late recurrences of AF (LRAF) after ablation depending on the AF type remain unknown. METHODS Consecutive AF patients undergoing pulmonary vein isolation (PVI) by radiofrequency catheter ablation were enrolled from September 2014 to June 2018. The peripheral blood leukocyte NLR 1 day before and 36-48 h after PVI were measured. First, the relationship between NLR changes after to before ablation (ΔNLR) and ERAFs/LRAFs in PAF and PerAF patients were investigated to exclude the baseline inflammation status and evaluate catheter ablation induced inflammation. Second, the clinical impact of the NLR for predicting LRAFs was evaluated. RESULTS There hundred sixty-nine PAF and 264 PerAF patients from Osaka Rosai AF registry were enrolled. The ratio of ERAFs/LRAFs in PAF and PerAF patients were 26.8%/22.5% and 39.4%/29.9%, respectively. In PAF and PerAF patients, the ΔNLR was significantly higher with ERAF than no-ERAF (p = 0.022 and p = 0.010, respectively). In PAF patients, the ΔNLR was significantly higher with LRAF than no-LRAF (p = 0.017), while with PerAF, the ΔNLR did not significantly differ between LRAFs and no-LRAFs. In PAF, the ΔNLR was independently and significantly associated with LRAFs after PVI (p = 0.029). CONCLUSION The ΔNLR was significantly higher only in PAF patients with LRAFs than no-LRAFs, but not in PerAF patients. The ΔNLR was useful for predicting LRAFs after PVI in PAF patients.
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Affiliation(s)
- Masamichi Yano
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Yasuyuki Egami
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Kohei Ukita
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Akito Kawamura
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Hitoshi Nakamura
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Yutaka Matsuhiro
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Koji Yasumoto
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Masaki Tsuda
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Naotaka Okamoto
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Akihiro Tanaka
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Yasuharu Matsunaga-Lee
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Ryu Shutta
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Masami Nishino
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
| | - Jun Tanouchi
- Division of Cardiology, Osaka Rosai Hospital, 3-1179 Nagasonecho, Kita-ku, Sakai, Osaka 591-8025, Japan
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16
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Xie B, Chen BX, Wu JY, Liu X, Yang MF. Factors relevant to atrial 18F-fluorodeoxyglucose uptake in atrial fibrillation. J Nucl Cardiol 2020; 27:1501-1512. [PMID: 30088193 PMCID: PMC7599132 DOI: 10.1007/s12350-018-1387-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/24/2018] [Indexed: 01/03/2023]
Abstract
BACKGROUND This retrospective study was designed to explore the factors relevant to increased atrial 18F-fluorodeoxyglucose (FDG) uptake in patients with atrial fibrillation (AF) who had undergone routine whole-body positron emission tomography/computed tomography (PET/CT) imaging. METHODS AND RESULTS Forty-eight consecutive AF patients (32 persistent, 16 paroxysmal) were identified from our routine FDG PET/CT database. Twenty-two control subjects were selected to establish the normal range of FDG uptake (maximum standardized uptake value, SUVmax) in target tissues. A target-to-background ratio (TBR) was calculated to determine abnormal uptake in the atrium and atrial appendage (AA). Univariate comparisons and multivariate regression analyses were conducted to explore the factors associated with the increased FDG accumulation in the atrium and AA. Seventeen AF patients, all with persistent AF, had increased atrial FDG uptake. Most of them (14, or 82.4%) had increased uptake in the right atrium. Eleven AF patients, 9 with persistent AF, had increased uptake in the AA, and bilateral AAs were equally involved. Multivariate logistic regression analyses identified that female gender, persistent AF, and activity in epicardial adipose tissue (EAT) were independent factors predicting the increased activity of the atrium; also, SUVmax of the left ventricle was found for the AA. In addition, multivariate linear regression analyses showed that EAT activity was the only independent variable linearly correlated with the activity of the atrium and AA. CONCLUSIONS Atrial uptake was present in persistent AF and localized mainly in the right atrium, whereas bilateral AAs could be equally involved. Multiple factors contributed to the increased activity in atrium; in particular, the EAT activity was independently correlated with the activity of the atrium and AA.
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Affiliation(s)
- Boqia Xie
- Cardiac Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Bi-Xi Chen
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, 8th Gongtinanlu Rd, Chaoyang District, Beijing, 100020, China
| | - Jiao-Yan Wu
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, 8th Gongtinanlu Rd, Chaoyang District, Beijing, 100020, China
| | - Xingpeng Liu
- Cardiac Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Min-Fu Yang
- Department of Nuclear Medicine, Beijing Chaoyang Hospital, Capital Medical University, 8th Gongtinanlu Rd, Chaoyang District, Beijing, 100020, China.
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17
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Tidbury N, Preston J, Ding WY, Rivera-Caravaca JM, Marín F, Lip GYH. Utilizing biomarkers associated with cardiovascular events in atrial fibrillation: informing a precision medicine response. EXPERT REVIEW OF PRECISION MEDICINE AND DRUG DEVELOPMENT 2020. [DOI: 10.1080/23808993.2020.1804864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Nicola Tidbury
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
| | - Joshua Preston
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
| | - Wern Yew Ding
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
| | - José Miguel Rivera-Caravaca
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
- Department of Cardiology, Hospital Clínico Universitario Virgen De La Arrixaca, University of Murcia, Instituto Murciano De Investigación Biosanitaria (Imib-arrixaca), CIBERCV, Murcia, Spain
| | - Francisco Marín
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
- Department of Cardiology, Hospital Clínico Universitario Virgen De La Arrixaca, University of Murcia, Instituto Murciano De Investigación Biosanitaria (Imib-arrixaca), CIBERCV, Murcia, Spain
| | - Gregory Y. H. Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
- Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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18
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Zhou X, Dudley SC. Evidence for Inflammation as a Driver of Atrial Fibrillation. Front Cardiovasc Med 2020; 7:62. [PMID: 32411723 PMCID: PMC7201086 DOI: 10.3389/fcvm.2020.00062] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/26/2020] [Indexed: 12/31/2022] Open
Abstract
Atrial fibrillation (AF) is one of the most common types of arrhythmias and increases cardiovascular morbidity and mortality. Current therapeutic approaches to AF that focus on rhythm control have high recurrence rates and no life prolongation value. While possible explanations include toxicity of current therapies, another likely explanation may be that current therapies do not address fundamental mechanisms of AF initiation and maintenance. Inflammation has been shown to affect signaling pathways that lead to the development of AF. This paper reviews the roles of inflammation in the occurrence, development, and mechanisms of AF and reviews the therapeutic implications of the correlation of inflammation and AF.
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Affiliation(s)
- Xiaoxu Zhou
- Division of Cardiology, Department of Medicine, the Lillehei Heart Institute, University of Minnesota at Twin Cities, Minneapolis, MN, United States
| | - Samuel C Dudley
- Division of Cardiology, Department of Medicine, the Lillehei Heart Institute, University of Minnesota at Twin Cities, Minneapolis, MN, United States
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19
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Zhou M, Wang H, Chen J, Zhao L. Epicardial adipose tissue and atrial fibrillation: Possible mechanisms, potential therapies, and future directions. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2019; 43:133-145. [DOI: 10.1111/pace.13825] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 10/03/2019] [Accepted: 10/22/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Mengmeng Zhou
- Department of Cardiology, Shanghai Chest HospitalShanghai Jiao Tong University Shanghai China
| | - Hao Wang
- Department of Cardiology, Shanghai Chest HospitalShanghai Jiao Tong University Shanghai China
| | - Jindong Chen
- Department of Cardiology, Shanghai Chest HospitalShanghai Jiao Tong University Shanghai China
| | - Liang Zhao
- Department of Cardiology, Shanghai Chest HospitalShanghai Jiao Tong University Shanghai China
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20
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Zacharia E, Papageorgiou N, Ioannou A, Siasos G, Papaioannou S, Vavuranakis M, Latsios G, Vlachopoulos C, Toutouzas K, Deftereos S, Providência R, Tousoulis D. Inflammatory Biomarkers in Atrial Fibrillation. Curr Med Chem 2019; 26:837-854. [DOI: 10.2174/0929867324666170727103357] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 11/20/2016] [Accepted: 12/02/2016] [Indexed: 11/22/2022]
Abstract
During the last few years, a significant number of studies have attempted to clarify
the underlying mechanisms that lead to the presentation of atrial fibrillation (AF). Inflammation
is a key component of the pathophysiological processes that lead to the development
of AF; the amplification of inflammatory pathways triggers AF, and, in tandem, AF
increases the inflammatory state. Indeed, the plasma levels of several inflammatory biomarkers
are elevated in patients with AF. In addition, the levels of specific inflammatory
biomarkers may provide information regarding to the AF duration. Several small studies
have assessed the role of anti-inflammatory treatment in atrial fibrillation but the results
have been contradictory. Large-scale studies are needed to evaluate the role of inflammation
in AF and whether anti-inflammatory medications should be routinely administered to
patients with AF.
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Affiliation(s)
- Effimia Zacharia
- 1st Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece
| | | | | | - Gerasimos Siasos
- 1st Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece
| | - Spyridon Papaioannou
- 1st Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece
| | - Manolis Vavuranakis
- 1st Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece
| | - George Latsios
- 1st Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece
| | | | - Konstantinos Toutouzas
- 1st Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece
| | | | - Rui Providência
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - Dimitris Tousoulis
- 1st Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece
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21
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Atrial Fibrillation and Acute Myocardial Infarction – An Inflammation-Mediated Association. JOURNAL OF CARDIOVASCULAR EMERGENCIES 2018. [DOI: 10.2478/jce-2018-0020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT
Atrial fibrillation (AF) is an increasingly widespread healthcare problem. AF can frequently present as a complication in acute coronary syndromes (ACS), especially in ST-elevation acute myocardial infarction (AMI), in which case it is the most frequent supraventricular rhythm disturbance with an estimated incidence of 6.8-21%. The presence of AF in ACS heralds worse outcomes in comparison to subjects in sinus rhythm, and several studies have shown that in AMI patients, both new-onset and pre-existing AF are associated with a higher risk of major adverse cardiovascular and cerebrovascular events during hospitalization. The cause of newonset AF in AMI is multifactorial. Although still incompletely understood, the mechanisms involved in the development of AF in acute myocardial ischemic events include the neurohormonal activation of the sympathetic nervous system that accompanies the AMI, ischemic involvement of the atrial myocytes, ventricular dysfunction, and atrial overload. The identification of patients at risk for AF is of great significance as it may lead to prompt therapeutic interventions and closer follow-up, thus improving prognosis and decreasing cardiovascular and cerebrovascular events. The present manuscript aims to summarize the current research findings related to new-onset AF in AMI patients, as well as the predictors and prognostic impact of this comorbid association.
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22
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Lubbers ER, Price MV, Mohler PJ. Arrhythmogenic Substrates for Atrial Fibrillation in Obesity. Front Physiol 2018; 9:1482. [PMID: 30405438 PMCID: PMC6204377 DOI: 10.3389/fphys.2018.01482] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 10/01/2018] [Indexed: 12/19/2022] Open
Abstract
Global obesity rates have nearly tripled since 1975. This obesity rate increase is mirrored by increases in atrial fibrillation (AF) that now impacts nearly 10% of Americans over the age of 65. Numerous epidemiologic studies have linked incidence of AF and obesity and other obesity-related diseases, including hypertension and diabetes. Due to the wealth of epidemiologic data linking AF with obesity-related disease, mechanisms of AF pathogenesis in the context of obesity are an area of ongoing investigation. However, progress has been somewhat slowed by the complex phenotype of obesity; separating the effects of obesity from those of related sequelae is problematic. While the initiation of pathogenic pathways leading to AF varies with disease (including increased glycosylation in diabetes, increased renin angiotensin aldosterone system activation in hypertension, atrial ischemia in coronary artery disease, and sleep apnea) the pathogenesis of AF is united by shared mediators of altered conduction in the atria. We suggest focusing on these downstream mediators of AF in obesity is likely to yield more broadly applicable data. In the context of obesity, AF is driven by the interrelated processes of inflammation, atrial remodeling, and oxidative stress. Obesity is characterized by a constant low-grade inflammation that leads to increased expression of pro-inflammatory cytokines. These cytokines contribute to changes in cardiomyocyte excitability. Atrial structural remodeling, including fibrosis, enlargement, and fatty infiltration is a prominent feature of AF and contributes to the altered conduction. Finally, obesity impacts oxidative stress. Within the cardiomyocyte, oxidative stress is increased through both increased production of reactive oxygen species and by downregulation of scavenging enzymes. This increased oxidative stress modulates of cardiomyocyte excitability, increasing susceptibility to AF. Although the initiating insults vary, inflammation, atrial remodeling, and oxidative stress are conserved mechanisms in the pathophysiology of AF in the obese patients. In this review, we highlight mechanisms that have been shown to be relevant in the pathogenesis of AF across obesity-related disease.
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Affiliation(s)
- Ellen R. Lubbers
- The Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Medical Scientist Training Program, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Morgan V. Price
- The Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Peter J. Mohler
- The Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Department of Physiology & Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
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23
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The role of pro-fibrotic biomarkers in paroxysmal and persistent atrial fibrillation. Cytokine 2018; 103:63-68. [DOI: 10.1016/j.cyto.2017.12.026] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/14/2017] [Accepted: 12/26/2017] [Indexed: 01/05/2023]
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24
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Nakayama Y, Fujiu K. Can Anti-inflammatory Therapy Prevent Atrial Fibrillation in Myocardial Infarction Patients? Int Heart J 2018; 59:3-5. [PMID: 29375115 DOI: 10.1536/ihj.17-662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Yukiteru Nakayama
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo
| | - Katsuhito Fujiu
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo.,Department of Ubiquitous Health Informatics, School of Medicine, The University of Tokyo
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25
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Abstract
Myocardial injury, mechanical stress, neurohormonal activation, inflammation, and/or aging all lead to cardiac remodeling, which is responsible for cardiac dysfunction and arrhythmogenesis. Of the key histological components of cardiac remodeling, fibrosis either in the form of interstitial, patchy, or dense scars, constitutes a key histological substrate of arrhythmias. Here we discuss current research findings focusing on the role of fibrosis, in arrhythmogenesis. Numerous studies have convincingly shown that patchy or interstitial fibrosis interferes with myocardial electrophysiology by slowing down action potential propagation, initiating reentry, promoting after-depolarizations, and increasing ectopic automaticity. Meanwhile, there has been increasing appreciation of direct involvement of myofibroblasts, the activated form of fibroblasts, in arrhythmogenesis. Myofibroblasts undergo phenotypic changes with expression of gap-junctions and ion channels thereby forming direct electrical coupling with cardiomyocytes, which potentially results in profound disturbances of electrophysiology. There is strong evidence that systemic and regional inflammatory processes contribute to fibrogenesis (i.e., structural remodeling) and dysfunction of ion channels and Ca2+ homeostasis (i.e., electrical remodeling). Recognizing the pivotal role of fibrosis in the arrhythmogenesis has promoted clinical research on characterizing fibrosis by means of cardiac imaging or fibrosis biomarkers for clinical stratification of patients at higher risk of lethal arrhythmia, as well as preclinical research on the development of antifibrotic therapies. At the end of this review, we discuss remaining key questions in this area and propose new research approaches. © 2017 American Physiological Society. Compr Physiol 7:1009-1049, 2017.
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Affiliation(s)
- My-Nhan Nguyen
- Baker Heart and Diabetes Institute, Melbourne, Australia.,Central Clinical School, Monash University, Melbourne, Australia
| | - Helen Kiriazis
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - Xiao-Ming Gao
- Baker Heart and Diabetes Institute, Melbourne, Australia.,Central Clinical School, Monash University, Melbourne, Australia
| | - Xiao-Jun Du
- Baker Heart and Diabetes Institute, Melbourne, Australia.,Central Clinical School, Monash University, Melbourne, Australia
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26
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Chen YY, Sun ZW, Jiang JP, Kang XD, Wang LL, Shen YL, Xie XD, Zheng LR. α-adrenoceptor-mediated enhanced inducibility of atrial fibrillation in a canine system inflammation model. Mol Med Rep 2017; 15:3767-3774. [PMID: 28440455 DOI: 10.3892/mmr.2017.6477] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 02/23/2017] [Indexed: 11/06/2022] Open
Abstract
The exact mechanism associated with inflammation and atrial fibrillation (AF) remains unknown. The aim of the present study was to investigate the roles of connexin 43 (Cx43) and a1‑adrenergic receptor (α1‑AR) activation in the pathogenesis of system inflammation‑induced AF. A canine model of chronic low‑grade system inflammation was established by administrating a low dose of lipopolysaccharide (LPS; 0.1 µg/kg) for 2 weeks. Programmed stimulation was applied on the right atrial appendage to determine the effective refractory periods (ERP) and the window of vulnerability (WOV). Tumor necrosis factor α (TNF‑α) and interleukin 6 (IL‑6) levels in plasma and atrial tissue were measured by ELISA. Cx43, Toll‑like receptor 4 (TLR4) and nuclear factor κB (NF‑κB) proteins were analyzed using western blotting or immunohistochemistry. Administration of LPS for 2 weeks increased the concentration of TNF‑α and IL‑6 in the plasma and right atrium. ERP was markedly shortened and cumulative WOV was significantly widened in the LPS group. Following treatment with LPS, the amount of Cx43 protein in the area of intercalated disk increased. In addition, a high‑density of Cx43 in the lateral connection was identified. LPS also induced the activation of NF‑κB in the canine atrium. Administration with the α1‑AR blocker doxazosin prevented the production of LPS‑induced inflammatory cytokine and reversed the enhanced vulnerability to atrial fibrillation. Doxazosin inhibited the LPS‑induced increase in Cx43 protein and heterogeneous distribution, and prevented the activation of NF‑κB. These results indicated that chronic low‑grade system inflammation may increase the inducibility of AF in a canine model. The underlying mechanism may be involved in the LPS‑induced activation of NF‑κB, and the increase in Cx43 expression and lateral distribution via an α1-AR-dependent pathway.
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Affiliation(s)
- Ying-Ying Chen
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Ze-Wei Sun
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Jian-Ping Jiang
- Department of Clinical Medicine, Zhejiang Medical College, Hangzhou, Zhejiang 310053, P.R. China
| | - Xiao-Dong Kang
- Experimental Animal Center, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P.R. China
| | - Lin-Lin Wang
- Center for Stem Cell and Tissue Engineering, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Yue-Liang Shen
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310058, P.R. China
| | - Xu-Dong Xie
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Liang-Rong Zheng
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
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27
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Negreva M, Georgiev S, Prodanova K. Significant Increase in C-Reactive Protein and Serum Amyloid A in the Early Hours of Paroxysmal Atrial Fibrillation. Cardiol Res 2017; 7:1-8. [PMID: 28197262 PMCID: PMC5295528 DOI: 10.14740/cr455w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2016] [Indexed: 01/23/2023] Open
Abstract
Background A number of data have been accumulated on inflammation in persistent and permanent atrial fibrillation (AF). Our aim was to study the process in paroxysmal AF (PAF) by measuring plasma concentrations of high-sensitivity C-reactive protein (hs-CRP), serum amyloid A (SAA) and fibrinogen in dynamics. Methods The markers were investigated in 51 patients (26 males and 25 females; 59.84 ± 1.60 years) at hospital admission (baseline), 24 hours and 28 days after sinus rhythm restoration. Fifty-two controls (26 males and 26 females; 59.50 ± 1.46 years) were selected. Results At baseline, hs-CRP and SAA concentrations were higher in patients (8.12 ± 0.82 vs. 5.57 ± 0.21 mg/L, P = 0.003; 16.04 ± 0.93 vs. 5.12 ± 0.23 ng/mL, P < 0.001, respectively) and these changes persisted 24 hours after sinus rhythm restoration (8.16 ± 0.71 vs. 5.57 ± 0.21 mg/L, P < 0.001; 12.99 ± 0.75 vs. 5.12 ± 0.23 ng/mL, P < 0.001, respectively). On the 28th day, no significant difference was measured (5.42 ± 0.29 vs. 5.57 ± 0.21 mg/L, P = 0.68; 5.89 ± 0.38 vs. 5.12 ± 0.23 ng/mL, P = 0.08, respectively). At any measurement, fibrinogen levels did not differ between patients and controls (3.30 ± 0.17 vs. 3.22 ± 0.11 g/L, P = 0.70; 3.32 ± 0.11 vs. 3.22 ± 0.11 g/L, P = 0.52; 3.24 ± 0.13 vs. 3.22 ± 0.11 g/L, P = 0.90, respectively). Conclusion PAF is associated with dynamics in hs-CRP and SAA plasma levels. The results suggest that inflammation is closely related to the arrhythmia initiation.
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Affiliation(s)
- Mariya Negreva
- First Clinic of Cardiology, Varna University Hospital "St. Marina", Bulgaria
| | - Svetoslav Georgiev
- Second Clinic of Cardiology, Varna University Hospital "St. Marina", Varna, Bulgaria
| | - Krasimira Prodanova
- Faculty of Applied Mathematics and Informatics, Technical University of Sofia, bul. Kl. Ohridski 8, Sofia, Bulgaria
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28
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Atrial fibrillation in highly trained endurance athletes — Description of a syndrome. Int J Cardiol 2017; 226:11-20. [DOI: 10.1016/j.ijcard.2016.10.047] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 10/16/2016] [Accepted: 10/17/2016] [Indexed: 12/22/2022]
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29
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Sharma G, Shetkar S, Bhasin A, Ramakrishnan L, Juneja R, Naik N, Roy A, Ramakrishnan S, Bhargava B, Bahl VK. High sensitive C-reactive protein and interleukin 6 in atrial fibrillation with rheumatic mitral stenosis from Indian cohort. Indian Heart J 2016; 69:505-511. [PMID: 28822519 PMCID: PMC5560862 DOI: 10.1016/j.ihj.2016.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 11/26/2016] [Accepted: 12/12/2016] [Indexed: 11/28/2022] Open
Abstract
Introduction Presence of chronic low grade inflammation has often been implicated in the etiology of atrial fibrillation (AF). Whether pre-existing inflammatory state promotes AF or initiation of AF activates inflammation is a dilemma among clinicians. This study investigates the role of high sensitive C reactive protein (hs-CRP) and interleukin 6 (IL-6) in AF with rheumatic mitral stenosis (Rh-MS) as markers of chronic inflammation. Methods This case control cohort included sixty five (n = 65) Rh-MS patients having other valve lesions as trivial to mild. Out of them twenty nine (n = 29; group C) had baseline AF and rest were normal sinus rhythm (NSR). A 24 h holter recording was done in NSR patients to diagnose paroxysmal AF/tachyarrhythmia forming group B (n = 12) and not having any tachyarrhythmia were designated as NSR; group A (n = 24). Results hs-CRP and IL6 showed statistically significant increase in group C (permanent AF) compared to group A (95% CI: 4.2–0.9, p = 0.007; 95% CI: 1.2–0.89; p = 0.05 respectively), while it was non significant between group A and group B (p > 0.05). A weak positive correlation was observed with hs-CRP and left atrial volume index (LAVi) (r = 0.45, p = 0.06) in AF group as compared to NSR group. 68.2% of patients in AF group (27/41) had moderate to severe spontaneous echo contrast (SEC) as compared to 37.5% (10/24) in NSR group. Conclusion Increased hs-CRP and IL-6 levels in the paroxysmal and permanent AF group may favour the hypothesis that low grade chronic inflammation could be the cause of atrial fibrillation than a consequence.
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Affiliation(s)
- Gautam Sharma
- Department of Cardiology, Room No 12, 8th floor, All India Institute of Medical Sciences, New Delhi, India.
| | - Sudhir Shetkar
- Department of Cardiology, Apollo Group of Hospitals, Nashik, India.
| | - Ashu Bhasin
- Department of Neurology, All India Institute of Medical Sciences, Room No 708, New Delhi, India.
| | - Lakshmy Ramakrishnan
- Department of Cardiac Biochemistry, All India Institute of Medical Sciences, Room No 61 Ground Floor, New Delhi, India.
| | - Rajnish Juneja
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | - Nitish Naik
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | - Ambuj Roy
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | | | - Balram Bhargava
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
| | - Vinay Kumar Bahl
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
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30
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Goette A, Kalman JM, Aguinaga L, Akar J, Cabrera JA, Chen SA, Chugh SS, Corradi D, D'Avila A, Dobrev D, Fenelon G, Gonzalez M, Hatem SN, Helm R, Hindricks G, Ho SY, Hoit B, Jalife J, Kim YH, Lip GYH, Ma CS, Marcus GM, Murray K, Nogami A, Sanders P, Uribe W, Van Wagoner DR, Nattel S. EHRA/HRS/APHRS/SOLAECE expert consensus on Atrial cardiomyopathies: Definition, characterisation, and clinical implication. J Arrhythm 2016; 32:247-78. [PMID: 27588148 PMCID: PMC4996910 DOI: 10.1016/j.joa.2016.05.002] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Andreas Goette
- Departement of Cardiology and Intensive Care Medicine, St. Vincenz-Hospital Paderborn, Working Group: Molecular Electrophysiology, University Hospital Magdeburg, Germany
| | - Jonathan M Kalman
- University of Melbourne, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | | | | | | | | | - Sumeet S Chugh
- The Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | | | - Dobromir Dobrev
- Institute of Pharmacology, West German Heart and Vascular Center, University Duisburg-Essen, Essen, Germany
| | | | - Mario Gonzalez
- Penn State Heart and Vascular Institute, Penn State University, Hershey, PA, USA
| | - Stephane N Hatem
- Department of Cardiology, Assistance Publique - Hô pitaux de Paris, Pitié-Salpêtrière Hospital, Sorbonne University, INSERM UMR_S1166, Institute of Cardiometabolism and Nutrition-ICAN, Paris, France
| | - Robert Helm
- Boston University School of Medicine, Boston Medical Center, Boston, MA, USA
| | | | - Siew Yen Ho
- Royal Brompton Hospital and Imperial College London, London, UK
| | - Brian Hoit
- UH Case Medical Center, Cleveland, OH, USA
| | | | | | | | | | | | | | | | - Prashanthan Sanders
- Centre for Heart Rhythm Disorders, South Australian Health and Medical Research Institute, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - William Uribe
- Electrophysiology Deparment at Centros Especializados de San Vicente Fundació n and Clínica CES. Universidad CES, Universidad Pontificia Bolivariana (UPB), Medellin, Colombia
| | | | - Stanley Nattel
- Université de Montréal, Montreal Heart Institute Research Center and McGill University, Montreal, Quebec, Canada; Institute of Pharmacology, West German Heart and Vascular Center, Faculty of Medicine, University Duisburg-Essen, Essen, Germany
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31
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Goette A, Kalman JM, Aguinaga L, Akar J, Cabrera JA, Chen SA, Chugh SS, Corradi D, D'Avila A, Dobrev D, Fenelon G, Gonzalez M, Hatem SN, Helm R, Hindricks G, Ho SY, Hoit B, Jalife J, Kim YH, Lip GYH, Ma CS, Marcus GM, Murray K, Nogami A, Sanders P, Uribe W, Van Wagoner DR, Nattel S. EHRA/HRS/APHRS/SOLAECE expert consensus on atrial cardiomyopathies: definition, characterization, and clinical implication. Europace 2016; 18:1455-1490. [PMID: 27402624 DOI: 10.1093/europace/euw161] [Citation(s) in RCA: 429] [Impact Index Per Article: 53.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Andreas Goette
- Departement of Cardiology and Intensive Care Medicine, St. Vincenz-Hospital Paderborn, Working Group: Molecular Electrophysiology, University Hospital Magdeburg, Germany
| | - Jonathan M Kalman
- University of Melbourne, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | | | | | | | | | - Sumeet S Chugh
- The Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | | | - Dobromir Dobrev
- Institute of Pharmacology, West German Heart and Vascular Center, University Duisburg-Essen, Essen, Germany
| | | | - Mario Gonzalez
- Penn State Heart and Vascular Institute, Penn State University, Hershey, PA, USA
| | - Stephane N Hatem
- Department of Cardiology, Assistance Publique - Hôpitaux de Paris, Pitié-Salpêtrière Hospital; Sorbonne University; INSERM UMR_S1166; Institute of Cardiometabolism and Nutrition-ICAN, Paris, France
| | - Robert Helm
- Boston University School of Medicine, Boston Medical Center, Boston, MA, USA
| | | | - Siew Yen Ho
- Royal Brompton Hospital and Imperial College London, London, UK
| | - Brian Hoit
- UH Case Medical Center, Cleveland, OH, USA
| | | | | | | | | | | | | | | | - Prashanthan Sanders
- Centre for Heart Rhythm Disorders, South Australian Health and Medical Research Institute, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - William Uribe
- Electrophysiology Deparment at Centros Especializados de San Vicente Fundación and Clínica CES. Universidad CES, Universidad Pontificia Bolivariana (UPB), Medellin, Colombia
| | | | - Stanley Nattel
- Université de Montréal, Montreal Heart Institute Research Center and McGill University, Montreal, Quebec, Canada .,Institute of Pharmacology, West German Heart and Vascular Center, Faculty of Medicine, University Duisburg-Essen, Essen, Germany
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32
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Seki M, LaCanna R, Powers JC, Vrakas C, Liu F, Berretta R, Chacko G, Holten J, Jadiya P, Wang T, Arkles JS, Copper JM, Houser SR, Huang J, Patel VV, Recchia FA. Class I Histone Deacetylase Inhibition for the Treatment of Sustained Atrial Fibrillation. J Pharmacol Exp Ther 2016; 358:441-9. [PMID: 27353074 DOI: 10.1124/jpet.116.234591] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 06/22/2016] [Indexed: 01/07/2023] Open
Abstract
Current therapies are less effective for treating sustained/permanent versus paroxysmal atrial fibrillation (AF). We and others have previously shown that histone deacetylase (HDAC) inhibition reverses structural and electrical atrial remodeling in mice with inducible, paroxysmal-like AF. Here, we hypothesize an important, specific role for class I HDACs in determining structural atrial alterations during sustained AF. The class I HDAC inhibitor N-acetyldinaline [4-(acetylamino)-N-(2-amino-phenyl) benzamide] (CI-994) was administered for 2 weeks (1 mg/kg/day) to Hopx transgenic mice with atrial remodeling and inducible AF and to dogs with atrial tachypacing-induced sustained AF. Class I HDAC inhibition prevented atrial fibrosis and arrhythmia inducibility in mice. Dogs were divided into three groups: 1) sinus rhythm, 2) sustained AF plus vehicle, and 3) sustained AF plus CI-994. In group 3, the time in AF over 2 weeks was reduced by 30% compared with group 2, along with attenuated atrial fibrosis and intra-atrial adipocyte infiltration. Moreover, group 2 dogs had higher atrial and serum inflammatory cytokines, adipokines, and atrial immune cells and adipocytes compared with groups 1 and 3. On the other hand, groups 2 and 3 displayed similar left atrial size, ventricular function, and mitral regurgitation. Importantly, the same histologic alterations found in dogs with sustained AF and reversed by CI-994 were also present in atrial tissue from transplanted patients with chronic AF. This is the first evidence that, in sustained AF, class I HDAC inhibition can reduce the total time of fibrillation, atrial fibrosis, intra-atrial adipocytes, and immune cell infiltration without significant effects on cardiac function.
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Affiliation(s)
- Mitsuru Seki
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Ryan LaCanna
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Jeffery C Powers
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Christine Vrakas
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Fang Liu
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Remus Berretta
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Geena Chacko
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - John Holten
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Pooja Jadiya
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Tao Wang
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Jeffery S Arkles
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Joshua M Copper
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Steven R Houser
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Jianhe Huang
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Vickas V Patel
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Fabio A Recchia
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
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EHRA/HRS/APHRS/SOLAECE expert consensus on atrial cardiomyopathies: Definition, characterization, and clinical implication. Heart Rhythm 2016; 14:e3-e40. [PMID: 27320515 DOI: 10.1016/j.hrthm.2016.05.028] [Citation(s) in RCA: 214] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Indexed: 12/21/2022]
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Chemokines and Heart Disease: A Network Connecting Cardiovascular Biology to Immune and Autonomic Nervous Systems. Mediators Inflamm 2016; 2016:5902947. [PMID: 27242392 PMCID: PMC4868905 DOI: 10.1155/2016/5902947] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 03/25/2016] [Accepted: 04/03/2016] [Indexed: 02/07/2023] Open
Abstract
Among the chemokines discovered to date, nineteen are presently considered to be relevant in heart disease and are involved in all stages of cardiovascular response to injury. Chemokines are interesting as biomarkers to predict risk of cardiovascular events in apparently healthy people and as possible therapeutic targets. Moreover, they could have a role as mediators of crosstalk between immune and cardiovascular system, since they seem to act as a “working-network” in deep linkage with the autonomic nervous system. In this paper we will describe the single chemokines more involved in heart diseases; then we will present a comprehensive perspective of them as a complex network connecting the cardiovascular system to both the immune and the autonomic nervous systems. Finally, some recent evidences indicating chemokines as a possible new tool to predict cardiovascular risk will be described.
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Pudil R, Vasatova M, Parizek P, Haman L, Horakova L, Palicka V. Increase of serum interleukin 6 and interferon γ is associated with the number of impulses in patients with supraventricular arrhythmias treated with radiofrequency catheter ablation. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2016; 160:106-10. [DOI: 10.5507/bp.2015.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 07/21/2015] [Indexed: 11/23/2022] Open
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Pfluecke C, Berndt K, Wydra S, Tarnowski D, Barthel P, Quick S, Ulbrich S, Christoph M, Waessnig N, Speiser U, Wunderlich C, Poitz DM, Strasser RH, Ibrahim K. Atrial fibrillation is associated with high levels of monocyte-platelet-aggregates and increased CD11b expression in patients with aortic stenosis. Thromb Haemost 2016; 115:993-1000. [PMID: 26763077 DOI: 10.1160/th15-06-0477] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 12/10/2015] [Indexed: 11/05/2022]
Abstract
A growing body of evidence suggests a pivotal role of inflammatory processes in AF in a bidirectional manner. Infiltrating leukocytes seem to promote both structural and electrical remodelling processes in patients with AF. Monocyte-platelets-aggregates (MPAs) are sensitive markers of both platelets and monocyte activation. So far it is not clear whether the content of MPAs is affected by AF. The present study examined the content of MPAs and the activation of monocytes in elderly patients with an aortic stenosis in dependence of AF. These patients are known to have a high prevalence of AF. Flow-cytometric quantification analysis demonstrated that patients with AF have an increased content of MPAs (207 ± 13 cells/µl vs 307 ± 21 cells/µl, p< 0.001), and enhanced expression of CD11b on monocytes (p< 0.001), compared to patients in stable sinus rhythm (SR). The number of CD14+/CD16+ monocytes were only slightly elevated in patients with AF. These findings were seen in patients with permanent AF. But also patients with paroxysmal AF, even when presenting in SR, the MPAs were increased by 50 % (p< 0.05) as well as the CD11b expression, which was twice as high (p< 0.05) compared to stable SR. These results demonstrate for the first time a dependency of MPAs and CD11b expression on monocytes in the presence of AF and support the notion of a close relationship between AF, thrombogenesis and inflammation. The content of MPAs and the extent of activation on monocytes appear promising as biomarkers for paroxysmal AF and as possible future targets for developing novel pharmacological therapeutic strategies.
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Affiliation(s)
- Christian Pfluecke
- Dr. med. Christian Pfluecke, Fetscherstrasse 76, 01307 Dresden, Germany, Tel.: +49 351 4500, Fax: +49 351 450 1702, E-mail:
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Begieneman MPV, Emmens RW, Rijvers L, Kubat B, Paulus WJ, Vonk ABA, Rozendaal L, Biesbroek PS, Wouters D, Zeerleder S, van Ham M, Heymans S, van Rossum AC, Niessen HWM, Krijnen PAJ. Ventricular myocarditis coincides with atrial myocarditis in patients. Cardiovasc Pathol 2015; 25:141-8. [PMID: 26764148 DOI: 10.1016/j.carpath.2015.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/06/2015] [Accepted: 12/01/2015] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Atrial fibrillation (AF) is a common complication in myocarditis. Atrial inflammation has been suggested to play an important role in the pathophysiology of AF. However, little is known about the occurrence of atrial inflammation in myocarditis patients. Here, we analyzed inflammatory cell numbers in the atria of myocarditis patients without symptomatic AF. METHODS Cardiac tissue was obtained postmortem from lymphocytic myocarditis patients (n=6), catecholamine-induced myocarditis patients (n=5), and control patients without pathological evidence of heart disease (n=5). Tissue sections of left and right ventricle and left and right atrium were stained for myeloperoxidase (neutrophilic granulocytes), CD45 (lymphocytes), and CD68 (macrophages). These cells were subsequently quantified in atrial and ventricular myocardium and atrial adipose tissue. RESULTS In lymphocytic myocarditis patients, a significant increase was observed for lymphocytes in the left atrial adipose tissue. In catecholamine-induced myocarditis patients, significant increases were found in the atria for all three inflammatory cell types. Infiltrating inflammatory cell numbers in the atrial myocardium correlated positively with those in the ventricles, especially in catecholamine-induced myocarditis patients. CONCLUSIONS To a varying extent, atrial myocarditis occurs concurrently with ventricular myocarditis in patients diagnosed with myocarditis of different etiology. This provides a substrate that potentially predisposes myocarditis patients to the development of AF and subsequent complications such as sudden cardiac death and heart failure.
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Affiliation(s)
- Mark P V Begieneman
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands; ICaR-VU, VU University Medical Center, Amsterdam, the Netherlands; Dutch Forensic Institute, The Hague, the Netherlands
| | - Reindert W Emmens
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands; ICaR-VU, VU University Medical Center, Amsterdam, the Netherlands; Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands.
| | - Liza Rijvers
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands
| | - Bela Kubat
- Dutch Forensic Institute, The Hague, the Netherlands
| | - Walter J Paulus
- ICaR-VU, VU University Medical Center, Amsterdam, the Netherlands; Department of Physiology, VU University Medical Center, Amsterdam, the Netherlands
| | - Alexander B A Vonk
- Department of Cardiac Surgery, VU University Medical Center, Amsterdam, the Netherlands
| | - Lawrence Rozendaal
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands; ICaR-VU, VU University Medical Center, Amsterdam, the Netherlands
| | - P Stefan Biesbroek
- Department of Cardiology, VU University Medical Center, Amsterdam, the Netherlands
| | - Diana Wouters
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands
| | - Sacha Zeerleder
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands; Department of Hematology, Academic Medical Center, Amsterdam, the Netherlands
| | - Marieke van Ham
- Department of Immunopathology, Sanquin Research, Amsterdam, the Netherlands
| | - Stephane Heymans
- Department of Cardiology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Albert C van Rossum
- ICaR-VU, VU University Medical Center, Amsterdam, the Netherlands; Department of Cardiology, VU University Medical Center, Amsterdam, the Netherlands
| | - Hans W M Niessen
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands; ICaR-VU, VU University Medical Center, Amsterdam, the Netherlands; Department of Cardiac Surgery, VU University Medical Center, Amsterdam, the Netherlands
| | - Paul A J Krijnen
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands; ICaR-VU, VU University Medical Center, Amsterdam, the Netherlands
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Diagnosing Paroxysmal Atrial Fibrillation: Are Biomarkers the Solution to This Elusive Arrhythmia? BIOMED RESEARCH INTERNATIONAL 2015; 2015:910267. [PMID: 26229966 PMCID: PMC4502272 DOI: 10.1155/2015/910267] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 02/09/2015] [Accepted: 02/12/2015] [Indexed: 01/02/2023]
Abstract
Atrial fibrillation (AF) is the commonest sustained arrhythmia globally and results in significantly increased morbidity and mortality including a fivefold risk of stroke. Paroxysmal atrial fibrillation (PAF) constitutes approximately half of all AF cases and is thought to represent an early stage of the disease. This intermittent form of atrial arrhythmia can be a challenge to identify and as a result many affected individuals are not prescribed appropriate antithrombotic therapy and hence are at risk of stroke and thromboembolism. Despite these adverse outcomes there have been relatively few diagnostic advances in the field since the introduction of the Holter monitor in 1949. This review aims to establish the available evidence for electrophysiological, molecular, and morphological biomarkers to improve the detection of PAF with reference to the underlying mechanisms for the condition.
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Bayar N, Çekin AH, Arslan Ş, Çağırcı G, Erkal Z, Çay S, Köklü E, Küçükseymen S. Assessment of Left Atrial Function in Patients with Celiac Disease. Echocardiography 2015; 32:1802-8. [PMID: 25923824 DOI: 10.1111/echo.12963] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND There is some evidence suggesting increased risk of atrial fibrillation (AF) in patients with celiac disease (CD). Impaired left atrial function plays a significant role in the development of AF. This study aimed at assessing the electrical and mechanical functions of the left atrium in patients with CD. METHODS A total of 71 patients with biopsy-proven, antibody-positive CD and 52 age-matched healthy controls were included in this prospective study. P-wave dispersion (PWD) was measured to assess the electrical functions of the left atrium through the use of surface electrocardiography. A tissue Doppler echocardiography was performed to determine the atrial conduction and electromechanical delay (EMD) time. To evaluate the mechanical functions of the left atrium, maximum, minimum, and presystolic atrial volumes were estimated to calculate the contractile, conduit, and reservoir functions. RESULTS In terms of transthoracic echocardiographic parameters, CD and control subjects were not significantly different. However, as compared to controls, patients with CD had significantly increased PWD (median 52 ms [interquartile range 46-58 ms] vs. 38 [36-40], P < 0.001). Also, significantly higher interatrial (49 ms [32-60] vs. 26 ms [22-28], P < 0.001), intra-left atrial (26 ms [17-44] vs. 14 ms [12-18], P < 0.001), and intra-right atrial (15 ms [8-22] vs. 10 ms [8-14], P < 0.001) EMD was found among CD subjects than controls. Despite an increase in the left atrial volume in patients with CD, conduit and reservoir functions were comparable. CONCLUSIONS Although atrial mechanical functions are preserved in patients with CD, a slower electrical conduction was found, suggesting an increased risk of AF in this group of patients.
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Affiliation(s)
- Nermin Bayar
- Cardiology Department, Antalya Education and Research Hospital, Antalya, Turkey
| | - Ayhan Hilmi Çekin
- Gastroenterology Department, Antalya Education and Research Hospital, Antalya, Turkey
| | - Şakir Arslan
- Cardiology Department, Antalya Education and Research Hospital, Antalya, Turkey
| | - Göksel Çağırcı
- Cardiology Department, Antalya Education and Research Hospital, Antalya, Turkey
| | - Zehra Erkal
- Cardiology Department, Antalya Education and Research Hospital, Antalya, Turkey
| | - Serkan Çay
- Cardiology Department, Yüksek İhtisas Education and Research Hospital, Ankara, Turkey
| | - Erkan Köklü
- Cardiology Department, Antalya Education and Research Hospital, Antalya, Turkey
| | - Selçuk Küçükseymen
- Cardiology Department, Antalya Education and Research Hospital, Antalya, Turkey
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Harada M, Van Wagoner DR, Nattel S. Role of inflammation in atrial fibrillation pathophysiology and management. Circ J 2015; 79:495-502. [PMID: 25746525 DOI: 10.1253/circj.cj-15-0138] [Citation(s) in RCA: 331] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Atrial fibrillation (AF) is the most common clinically relevant arrhythmia, but the methods available for treating AF and its complications (of which the most important is thrombogenesis), as well as for assessing AF risk and underlying pathophysiology, are largely limited. Emerging evidence suggests a significant role of inflammation in the pathogenesis of AF. That evidence includes elevated serum levels of inflammatory biomarkers in AF subjects, the expression of inflammatory markers in cardiac tissues of AF patients and animal models of AF, and beneficial effects of anti-inflammatory drugs in experimental AF paradigms. Inflammation is suggested to be linked to various pathological processes, such as oxidative stress, apoptosis, and fibrosis, that promote AF substrate formation. Inflammation has also been associated with endothelial dysfunction, platelet activation, and coagulation cascade activation, leading to thrombogenesis. Thus, inflammation may contribute to both the occurrence/maintenance of AF and its thromboembolic complications. Here, we review the evidence for a role of inflammation and inflammatory biomarkers in the risk management and treatment of AF. We also summarize the current knowledge of inflammation-dependent cellular and molecular mechanisms in AF pathophysiology and their potential as therapeutic targets.
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Affiliation(s)
- Masahide Harada
- Department of Cardiology, Fujita Health University School of Medicine
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Abstract
Atrial fibrillation (AF) is the most common cardiac arrhythmia. However, the development of preventative therapies for AF has been disappointing. The infiltration of immune cells and proteins that mediate the inflammatory response in cardiac tissue and circulatory processes is associated with AF. Furthermore, the presence of inflammation in the heart or systemic circulation can predict the onset of AF and recurrence in the general population, as well as in patients after cardiac surgery, cardioversion, and catheter ablation. Mediators of the inflammatory response can alter atrial electrophysiology and structural substrates, thereby leading to increased vulnerability to AF. Inflammation also modulates calcium homeostasis and connexins, which are associated with triggers of AF and heterogeneous atrial conduction. Myolysis, cardiomyocyte apoptosis, and the activation of fibrotic pathways via fibroblasts, transforming growth factor-β and matrix metalloproteases are also mediated by inflammatory pathways, which can all contribute to structural remodelling of the atria. The development of thromboembolism, a detrimental complication of AF, is also associated with inflammatory activity. Understanding the complex pathophysiological processes and dynamic changes of AF-associated inflammation might help to identify specific anti-inflammatory strategies for the prevention of AF.
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Özcan KS, Güngör B, Altay S, Osmonov D, Ekmekçi A, Özpamuk F, Kemaloğlu T, Yıldırım A, Tayyareci G, Erdinler İ. Increased level of resistin predicts development of atrial fibrillation. J Cardiol 2014; 63:308-12. [DOI: 10.1016/j.jjcc.2013.10.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 10/10/2013] [Accepted: 10/18/2013] [Indexed: 12/21/2022]
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Vílchez JA, Roldán V, Hernández-Romero D, Valdés M, Lip GYH, Marín F. Biomarkers in atrial fibrillation: an overview. Int J Clin Pract 2014; 68:434-43. [PMID: 24372915 DOI: 10.1111/ijcp.12304] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Atrial fibrillation (AF) confers a raised risk of stroke and death, and this risk of adverse events is increased by the coexistence of other cardiovascular risk factors. The pathophysiology of AF is complex, involving the role of inflammation, structural remodelling with apoptosis, inflammation or fibrosis. These changes confer a prothrombotic or hypercoagulable state in this arrhythmia. Despite being easy to use for decision-making concerning oral anticoagulant therapy in AF, clinical risk scores used for stratification have shown modest capability in predicting thromboembolic events, and biomarkers may improve our identification of 'high risk' patients. Biomarkers, whether measured in the peripheral blood, urine or imaging-based may improve our knowledge of the pathophysiology of AF. Importantly these biomarkers could help in the assessment of AF prognosis. The aim of this review was to summarise the published data about biomarkers studied in AF, with focus on data from randomised prospective clinical trials and large community-based cohorts. We will also review the application of these biomarkers to prognosis on the main schemes used to help stratify risk in AF.
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Affiliation(s)
- J A Vílchez
- Department of Cardiology, Hospital Universitario Virgen de la Arrixaca, University of Murcia, Murcia, Spain; Department of Clinical Analysis, Hospital Universitario Virgen de la Arrixaca, University of Murcia, Murcia, Spain
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Pinho-Gomes AC, Reilly S, Brandes RP, Casadei B. Targeting inflammation and oxidative stress in atrial fibrillation: role of 3-hydroxy-3-methylglutaryl-coenzyme a reductase inhibition with statins. Antioxid Redox Signal 2014; 20:1268-85. [PMID: 23924190 PMCID: PMC3934546 DOI: 10.1089/ars.2013.5542] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
SIGNIFICANCE Atrial fibrillation (AF) is a burgeoning health-care problem, and the currently available therapeutic armamentarium is barely efficient. Experimental and clinical evidence implicates inflammation and myocardial oxidative stress in the pathogenesis of AF. RECENT ADVANCES Local and systemic inflammation has been found to both precede and follow the new onset of AF, and NOX2-dependent generation of reactive oxygen species in human right atrial samples has been independently associated with the occurrence of AF in the postoperative period in patients undergoing cardiac surgery. Anti-inflammatory and antioxidant agents can prevent atrial electrical remodeling in animal models of atrial tachypacing and the new onset of AF after cardiac surgery, suggesting a causal relationship between inflammation/oxidative stress and the atrial substrate that supports AF. CRITICAL ISSUES Statin therapy, by redressing the myocardial nitroso-redox balance and reducing inflammation, has emerged as a potentially effective strategy for the prevention of AF. Evidence indicates that statins prevent AF-induced electrical remodeling in animal models of atrial tachypacing and may reduce the new onset of AF after cardiac surgery. However, whether statins have antiarrhythmic properties in humans has yet to be conclusively demonstrated, as data from randomized controlled trials specifically addressing the relevance of statin therapy for the primary and secondary prevention of AF remain scanty. FUTURE DIRECTIONS A better understanding of the mechanisms underpinning the putative antiarrhythmic effects of statins may afford tailoring AF treatment to specific clinical settings and patient's subgroups. Large-scale randomized clinical trials are needed to support the indication of statin therapy solely on the basis of AF prevention.
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Affiliation(s)
- Ana Catarina Pinho-Gomes
- 1 Department of Cardiovascular Medicine, University of Oxford , John Radcliffe Hospital, Oxford, United Kingdom
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Corradi D, Callegari S, Manotti L, Ferrara D, Goldoni M, Alinovi R, Pinelli S, Mozzoni P, Andreoli R, Asimaki A, Pozzoli A, Becchi G, Mutti A, Benussi S, Saffitz JE, Alfieri O. Persistent lone atrial fibrillation: clinicopathologic study of 19 cases. Heart Rhythm 2014; 11:1250-8. [PMID: 24560692 DOI: 10.1016/j.hrthm.2014.02.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Indexed: 11/26/2022]
Abstract
BACKGROUND The extent to which atrial myocardium is remodeled in patients with persistent lone atrial fibrillation (LAF) is largely unknown. OBJECTIVE The purpose of this study was to perform a clinicopathologic investigation in patients with persistent LAF. METHODS We characterized structural and molecular remodeling in atrial biopsies from 19 patients (17 males, mean age 49 years) with persistent (>7 days; n = 8) or long-lasting persistent (>1 year; n = 11) LAF who underwent surgical ablation. Atrial tissue from 15 autopsy samples without clinicopathologic evidence of heart disease served as controls. RESULTS Morphometric analysis showed cardiomyocyte hypertrophy and greater amounts of myolytic damage and interstitial fibrosis in persistent LAF patients compared to controls (P <.0001). Atrial tissue levels of heme oxygenase-1 and 3-nitrotyrosine were increased in persistent LAF patients (P <.001), consistent with oxidative stress. Levels of superoxide dismutase-2, interleukin-8, interleukin-10, tumor necrosis factor-α, and thiobarbituric acid reactive substance were greater in controls than in persistent LAF patients. Immunoreactive signal for connexin43 was reduced more frequently in persistent LAF patients than controls. There was no correlation between features of structural or molecular remodeling and clinical parameters, including persistent LAF duration. CONCLUSION In persistent LAF patients, the atria are modified by structural remodeling and molecular changes of oxidative stress. Tissue changes in persistent LAF appear to occur early after its onset and are qualitatively no different than those observed in patients with atrial fibrillation related to conventional risk factors. These findings suggest that different types of atrial fibrillation are associated with the same spectrum of tissue lesions. Early intervention to restore sinus rhythm in persistent LAF patients may prevent irreversible tissue change, especially interstitial fibrosis.
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Affiliation(s)
- Domenico Corradi
- Department of Biomedical, Biotechnological, and Translational Sciences (S.Bi.Bi.T.), Unit of Pathology, University of Parma, Parma, Italy.
| | | | - Laura Manotti
- Department of Biomedical, Biotechnological, and Translational Sciences (S.Bi.Bi.T.), Unit of Pathology, University of Parma, Parma, Italy
| | - David Ferrara
- Cardiothoracic Surgery Unit, Department of Cardiology, San Raffaele University Hospital, Milan, Italy
| | - Matteo Goldoni
- Department of Clinical and Experimental Medicine, Laboratory of Industrial Toxicology, University of Parma, Parma, Italy
| | - Rossella Alinovi
- Department of Clinical and Experimental Medicine, Laboratory of Industrial Toxicology, University of Parma, Parma, Italy
| | - Silvana Pinelli
- Department of Clinical and Experimental Medicine, Laboratory of Industrial Toxicology, University of Parma, Parma, Italy
| | - Paola Mozzoni
- Department of Clinical and Experimental Medicine, Laboratory of Industrial Toxicology, University of Parma, Parma, Italy; Italian Workers' Compensation Authority (INAIL) Research Center at the University of Parma, Parma, Italy
| | - Roberta Andreoli
- Department of Clinical and Experimental Medicine, Laboratory of Industrial Toxicology, University of Parma, Parma, Italy; Italian Workers' Compensation Authority (INAIL) Research Center at the University of Parma, Parma, Italy
| | - Angeliki Asimaki
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Alberto Pozzoli
- Cardiothoracic Surgery Unit, Department of Cardiology, San Raffaele University Hospital, Milan, Italy
| | - Gabriella Becchi
- Department of Biomedical, Biotechnological, and Translational Sciences (S.Bi.Bi.T.), Unit of Pathology, University of Parma, Parma, Italy
| | - Antonio Mutti
- Department of Clinical and Experimental Medicine, Laboratory of Industrial Toxicology, University of Parma, Parma, Italy
| | - Stefano Benussi
- Cardiothoracic Surgery Unit, Department of Cardiology, San Raffaele University Hospital, Milan, Italy
| | - Jeffrey E Saffitz
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Ottavio Alfieri
- Cardiothoracic Surgery Unit, Department of Cardiology, San Raffaele University Hospital, Milan, Italy
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SONG ZHIPING, LIU XU, ZHANG DADONG. Connective Tissue Growth Factor: A Predictor of Recurrence after Catheter Ablation in Patients with Nonparoxysmal Atrial Fibrillation. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2014; 37:630-7. [PMID: 24467520 DOI: 10.1111/pace.12345] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 12/06/2013] [Accepted: 12/09/2013] [Indexed: 01/22/2023]
Affiliation(s)
- ZHI-PING SONG
- Department of Cardiology; Minhang Hospital; Ruijin Hospital Group; Shanghai Jiaotong University School of Medicine; Shanghai People's Republic of China
| | - XU LIU
- Department of Cardiology; Shanghai Chest Hospital; Shanghai Jiaotong University School of Medicine; Shanghai People's Republic of China
| | - DA-DONG ZHANG
- Department of Cardiology; Minhang Hospital; Ruijin Hospital Group; Shanghai Jiaotong University School of Medicine; Shanghai People's Republic of China
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Karavelioğlu Y, Karapınar H, Yüksel M, Memiç K, Sarak T, Kurt R, Yilmaz A. Neutrophil to lymphocyte ratio is predictor of atrial fibrillation recurrence after cardioversion with amiodarone. Clin Appl Thromb Hemost 2014; 21:5-9. [PMID: 24431383 DOI: 10.1177/1076029613518368] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND In this study, our aim is to examine the role of the neutrophil to lymphocyte ratio (NLR) in the predictions of recurrence under long-term follow-up in patients whose sinus rhythms (SRs) were restored with amiodarone in acute atrial fibrillation (AF). METHODS Retrospectively, patients with acute AF, which successfully converted to the SR with amiodarone treatment, were recruited into the study. Patients experiencing the first AF attack were enrolled to the study and followed up for 5 years (median 23 months, 25-75 percentiles 12-24 months). Neutrophil to lymphocyte ratio was computed as absolute neutrophil count divided by lymphocyte count. RESULTS A total of 218 patients were recruited into the study and followed up for 21.6 ± 13.9 months; 87 (40%) patients had ≥1 recurrent AF attack within this period. The follow-up of 131 (60%) patients resulted in persisted SR without any other AF attack. Groups were similar in terms of age and gender. Left atrium (LA) diameter and NLR were increased, and platelet count and lymphocyte count were decreased in patients with AF recurrence in univariate analysis (P < .05 for all). Only LA diameter (for per mm, 1.077 [1.021-1.136], P = .006) and NLR (1.584 [1.197-2.095], P = .001) were independent predictors of AF recurrence in the multivariate analysis. CONCLUSION Increased NLR is a marker of increased inflammation and may serve as simple, cheap, and readily available predictors of recurrence in the long-term follow-up of patients admitted with acute AF and successfully converted to SR with amiodarone.
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Affiliation(s)
- Yusuf Karavelioğlu
- Department of Cardiology, Çorum Training and Research Hospital, Hitit University, Çorum, Turkey
| | - Hekim Karapınar
- Department of Cardiology, Cumhuriyet University Medical School, Sivas, Turkey
| | - Murat Yüksel
- Department of Cardiology, Dicle University Medical School, Diyarbakır, Turkey
| | - Kadriye Memiç
- Department of Cardiology, Çorum Training and Research Hospital, Hitit University, Çorum, Turkey
| | - Taner Sarak
- Department of Cardiology, Çorum Training and Research Hospital, Hitit University, Çorum, Turkey
| | - Recep Kurt
- Department of Cardiology, Cumhuriyet University Medical School, Sivas, Turkey
| | - Ahmet Yilmaz
- Department of Cardiology, Cumhuriyet University Medical School, Sivas, Turkey
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48
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Corradi D. Atrial fibrillation from the pathologist's perspective. Cardiovasc Pathol 2013; 23:71-84. [PMID: 24462196 DOI: 10.1016/j.carpath.2013.12.001] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 12/03/2013] [Accepted: 12/07/2013] [Indexed: 12/18/2022] Open
Abstract
Atrial fibrillation (AF), the most common sustained cardiac arrhythmia encountered in clinical practice, is associated with increased morbidity and mortality. Electrophysiologically, it is characterized by a high rate of asynchronous atrial cell depolarization causing a loss of atrial contractile function and irregular ventricular rates. For a long time, AF was considered as a pure functional disorder without any structural background. Only in recent years, have new mapping and imaging techniques identified atrial locations, which are very often involved in the initiation and maintenance of this supraventricular arrhythmia (i.e. the distal portion of the pulmonary veins and the surrounding atrial myocardium). Morphological analysis of these myocardial sites has demonstrated significant structural remodeling as well as paved the way for further knowledge of AF natural history, pathogenesis, and treatment. This architectural myocardial disarrangement is induced by the arrhythmia itself and the very frequently associated cardiovascular disorders. At the same time, the structural remodeling is also capable of sustaining AF, thereby creating a sort of pathogenetic vicious circle. This review focuses on current understanding about the structural and genetic bases of AF with reference to their classification, pathogenesis, and clinical implications.
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Affiliation(s)
- Domenico Corradi
- Department of Biomedical, Biotechnological, and Translational Sciences (S.Bi.Bi.T.), Unit of Pathology, University of Parma, Parma, Italy.
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49
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Association of inflammatory factors with occurrence and recurrence of atrial fibrillation: A meta-analysis. Int J Cardiol 2013; 169:62-72. [DOI: 10.1016/j.ijcard.2013.08.078] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 07/21/2013] [Accepted: 08/28/2013] [Indexed: 11/20/2022]
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50
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Alegret JM, Aragonès G, Elosua R, Beltrán-Debón R, Hernández-Aguilera A, Romero-Menor C, Camps J, Joven J. The relevance of the association between inflammation and atrial fibrillation. Eur J Clin Invest 2013; 43:324-31. [PMID: 23397981 DOI: 10.1111/eci.12047] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 12/20/2012] [Indexed: 01/17/2023]
Abstract
BACKGROUND The relevance of the association between inflammation and atrial fibrillation (AF) is not firmly established. The clinical importance is considerable because inflammation is usually not targeted as a treatment option, minimizing a probable benefit. MATERIALS AND METHODS We have used a case-control study with a Mendelian randomization rationale to assess whether proposed risk factors that have a genetic component and are readily detected in circulating blood are causally related to AF. The studied variables were C-reactive protein (CRP) and a representative of the chemokine system, the monocyte chemoattractant protein-1 (CCL2). RESULTS Plasma CRP and CCL2 concentrations were significantly higher in AF patients than in the unaffected population. However, when segregated between paroxysmal and permanent, the difference for CRP was only observed in patients with a permanent condition. Plasma CCL2 was raised in both subgroups. Confounding factors were carefully considered, and multivariable analyses revealed that circulating CCL2 was significant and CRP was negligible to explain the presence of AF. The duration of the episode also bore a significant predictive value. Odd ratios for AF as a function of genotype did not differ from 1·0 for any of the individual CRP and CCL2 polymorphisms, or any combinations. CONCLUSIONS Elevated plasma CRP concentration per se does not increase atrial fibrillation risk. Values obtained for CCL2 suggest that inflammation is probably a consequence of AF. Our data also suggest that the effect of the duration of the episode should be further studied in the assessment of the actual role of inflammation.
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Affiliation(s)
- Josep M Alegret
- Secció de Cardiologia, Hospital Universitari de Sant Joan, IISPV, Universitat Rovira i Virgili, Reus, Spain.
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