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Abuelazm M, Saleh O, Kambalapalli S, Albarakat MM, Gowaily I, Mahmoud A, Abdelazeem B. The efficacy and safety of botulinum toxin epicardial fat injection to prevent postoperative atrial fibrillation in patients undergoing cardiac surgery: a meta-analysis of randomized controlled trials. Proc AMIA Symp 2024; 37:279-286. [PMID: 38343481 PMCID: PMC10857451 DOI: 10.1080/08998280.2023.2299205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 11/29/2023] [Indexed: 07/28/2024] Open
Abstract
Background Postoperative atrial fibrillation (POAF) is prevalent in about 30% to 60% of patients undergoing cardiac surgery, leading to worse outcomes. Botulinum toxin type A (BTX) epicardial injection has been proposed to prevent POAF by impairing cholinergic signaling. Methods A systematic review and meta-analysis synthesized randomized controlled trials, which were retrieved by searching PubMed, EMBASE, Web of Science, SCOPUS, and Cochrane through November 23, 2022. RevMan version 5.4 was used to pool dichotomous outcomes using risk ratio (RR) and continuous outcomes using mean differences (MD) presented with the corresponding confidence interval (CI). Results Three randomized controlled trials with 509 patients (308 in the BTX group and 205 in the placebo group) were included in the analysis. There was no difference between BTX and placebo regarding POAF incidence (RR 0.81 with 95% CI [0.65, 1.00], P = 0.05), postoperative hospital length of stay in days (MD -0.03 with 95% CI [-0.54, 0.49], P = 0.91), all-cause mortality (RR 1.64 with 95% CI [0.22, 12.17], P = 0.63), any adverse event (RR 1.03 with 95% CI [0.94, 1.12], P = 0.51), or any serious adverse event (RR 0.89 with 95% CI [0.68, 1.15], P = 0.36). Conclusion There was no difference between the epicardial fat injection of BTX versus placebo for preventing POAF.
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Affiliation(s)
| | - Othman Saleh
- Faculty of Medicine, The Hashemite University, Zarqa, Jordan
| | - Soumya Kambalapalli
- Department of Internal Medicine, McLaren Health Care, Flint, Michigan, USA
- Department of Internal Medicine, Michigan State University, East Lansing, Michigan, USA
| | - Majd M. Albarakat
- Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | | | | | - Basel Abdelazeem
- Department of Cardiology, West Virginia University, Morgantown, West Virginia, USA
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2
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Fu X, Iglesias-Álvarez D, García-Campos A, Martínez-Monzonís MA, Almenglo C, Martinez-Cereijo JM, Reija L, Fernandez ÁL, Gonzalez-Juanatey JR, Rodriguez-Manero M, Eiras S. Enhanced Levels of Adiposity, Stretch and Fibrosis Markers in Patients with Coexistent Heart Failure and Atrial Fibrillation. J Cardiovasc Transl Res 2024; 17:13-23. [PMID: 37878196 DOI: 10.1007/s12265-023-10454-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 10/11/2023] [Indexed: 10/26/2023]
Abstract
The coexistence of heart failure (HF) and atrial fibrillation (AF) worsens the prognosis of patients. We aimed to study the inflammation, metabolism, adiposity, and fibrosis markers on epicardial and subcutaneous fat and blood, and their relationship with HF and AF. Samples from 185 patients undergoing cardiac surgery were collected. Levels of multi-markers on fat biopsies and plasma were analyzed. Patients were grouped by HF or AF presence. Plasma adiposity markers were increased in AF patients, while increased stretch markers correlated with HF. Patients with both AF and HF had higher ANP and GDF-15 levels. After excluding AF patients, plasma FABP4 was identified as the main HF predictor. Fat biopsies from AF patients showed an enhanced inflammatory profile. Higher levels of adiposity markers are associated with AF or HF, and higher stretch and fibrosis markers with combined AF and HF, suggesting a role of adiposity-fibrosis pathway in HF and AF coexistence.
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Affiliation(s)
- Xiaoran Fu
- Translational Cardiology Group, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
- University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Diego Iglesias-Álvarez
- Cardiovascular Area, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Ana García-Campos
- Cardiovascular Area, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
- CIBERCV, Madrid, Spain
| | | | - Cristina Almenglo
- Translational Cardiology Group, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
| | | | - Laura Reija
- Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Ángel Luis Fernandez
- CIBERCV, Madrid, Spain
- Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Jose Ramón Gonzalez-Juanatey
- Cardiovascular Area, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
- CIBERCV, Madrid, Spain
- Medicine Department, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Moises Rodriguez-Manero
- Translational Cardiology Group, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
- Cardiovascular Area, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
- CIBERCV, Madrid, Spain
| | - Sonia Eiras
- Translational Cardiology Group, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain.
- CIBERCV, Madrid, Spain.
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3
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Kaplan A, Lakkis B, El-Samadi L, Karaayvaz EB, Booz GW, Zouein FA. Cooling Down Inflammation in the Cardiovascular System via the Nicotinic Acetylcholine Receptor. J Cardiovasc Pharmacol 2023; 82:241-265. [PMID: 37539950 DOI: 10.1097/fjc.0000000000001455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/06/2023] [Indexed: 08/05/2023]
Abstract
ABSTRACT Inflammation is a major player in many cardiovascular diseases including hypertension, atherosclerosis, myocardial infarction, and heart failure. In many individuals, these conditions coexist and mutually exacerbate each other's progression. The pathophysiology of these diseases entails the active involvement of both innate and adaptive immune cells. Immune cells that possess the α7 subunit of the nicotinic acetylcholine receptor on their surface have the potential to be targeted through both pharmacological and electrical stimulation of the cholinergic system. The cholinergic system regulates the inflammatory response to various stressors in different organ systems by systematically suppressing spleen-derived monocytes and chemokines and locally improving immune cell function. Research on the cardiovascular system has demonstrated the potential for atheroma plaque stabilization and regression as favorable outcomes. Smaller infarct size and reduced fibrosis have been associated with improved cardiac function and a decrease in adverse cardiac remodeling. Furthermore, enhanced electrical stability of the myocardium can lead to a reduction in the incidence of ventricular tachyarrhythmia. In addition, improving mitochondrial dysfunction and decreasing oxidative stress can result in less myocardial tissue damage caused by reperfusion injury. Restoring baroreflex activity and reduction in renal damage can promote blood pressure regulation and help counteract hypertension. Thus, the present review highlights the potential of nicotinic acetylcholine receptor activation as a natural approach to alleviate the adverse consequences of inflammation in the cardiovascular system.
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Affiliation(s)
- Abdullah Kaplan
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
- Department of Cardiology, Kemer Public Hospital, Kemer, Antalya, Turkey
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, Beirut, Lebanon
| | - Bachir Lakkis
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
| | - Lana El-Samadi
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
| | - Ekrem Bilal Karaayvaz
- Department of Cardiology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - George W Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS; and
| | - Fouad A Zouein
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Riad El-Solh, Beirut, Lebanon
- The Cardiovascular, Renal, and Metabolic Diseases Research Center of Excellence, American University of Beirut Medical Center, Riad El-Solh, Beirut, Lebanon
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS; and
- Department of Signaling and Cardiovascular Pathophysiology, UMR-S 1180, Inserm, Université Paris-Saclay, France
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4
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Iglesias-Álvarez D, Fu X, Martínez-Cereijo JM, Agra-Bermejo RM, Veiras-Del Río S, Selas-Cobos S, Rial-Munin MV, Eiras-Mariño M, Martínez-Salgado A, Taboada-Muñiz M, Reija-López L, Souaf S, García-Carro J, Fernández-González ÁL, Adrio-Nazar B, González-Juanatey JR, Eiras S, Rodríguez-Mañero M. Clinical Profiling and Biomarkers for Post-Operative Atrial Fibrillation Prediction in Patients Undergoing Cardiac Surgery. J Clin Med 2023; 12:jcm12103565. [PMID: 37240672 DOI: 10.3390/jcm12103565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/17/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Post-operative atrial fibrillation (POAF) is the most common arrhythmia in the post-operative period after cardiac surgery. We aim to investigate the main clinical, local, and/or peripheral biochemical and molecular predictors for POAF in patients undergoing coronary and/or valve surgery. Between August 2020 and September 2022, consecutive patients undergoing cardiac surgery without previous history of AF were studied. Clinical variables, plasma, and biological tissues (epicardial and subcutaneous fat) were obtained before surgery. Pre-operative markers associated with inflammation, adiposity, atrial stretch, and fibrosis were analyzed on peripheral and local samples with multiplex assay and real-time PCR. Univariate and multivariate logistic regression analyses were performed in order to identify the main predictors for POAF. Patients were followed-up until hospital discharge. Out of 123 consecutive patients without prior AF, 43 (34.9%) developed POAF during hospitalization. The main predictors were cardiopulmonary bypass time (odds ratio (OR) 1.008 (95% confidence interval (CI), 1.002-1.013), p = 0.005), and plasma pre-operative orosomucoid levels (OR 1.008 (1.206-5.761). After studying differences regarding sex, orosomucoid was the best predictor for POAF in women (OR 2.639 (95% CI, 1.455-4.788), p = 0.027) but not in men. The results support the pre-operative inflammation pathway as a factor involved in the risk of POAF, mainly in women.
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Affiliation(s)
- Diego Iglesias-Álvarez
- Department of Cardiology, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Xiaoran Fu
- Traslational Cardiology, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain
- CIBERCV-Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, 28029 Madrid, Spain
| | - José Manuel Martínez-Cereijo
- Department of Cardiac Surgery, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Rosa María Agra-Bermejo
- Department of Cardiology, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
- Traslational Cardiology, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain
| | - Sonia Veiras-Del Río
- Department of Anaesthesia and Critical Care, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Salomé Selas-Cobos
- Department of Anaesthesia and Critical Care, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - María Victoria Rial-Munin
- Department of Anaesthesia and Critical Care, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - María Eiras-Mariño
- Department of Anaesthesia and Critical Care, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Adrián Martínez-Salgado
- Department of Anaesthesia and Critical Care, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Manuel Taboada-Muñiz
- Department of Anaesthesia and Critical Care, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Laura Reija-López
- Department of Cardiac Surgery, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Souhayla Souaf
- Department of Cardiac Surgery, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - Javier García-Carro
- Department of Cardiac Surgery, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | | | - Belén Adrio-Nazar
- Department of Cardiac Surgery, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
| | - José Ramón González-Juanatey
- Department of Cardiology, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
- Traslational Cardiology, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain
- CIBERCV-Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, 28029 Madrid, Spain
| | - Sonia Eiras
- Department of Cardiology, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
- Traslational Cardiology, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain
- CIBERCV-Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, 28029 Madrid, Spain
| | - Moisés Rodríguez-Mañero
- Department of Cardiology, Complexo Hospitalario Universitario de Santiago, 15706 Santiago de Compostela, Spain
- Traslational Cardiology, Health Research Institute of Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain
- CIBERCV-Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, 28029 Madrid, Spain
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5
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Willar B, Tran KV, Fitzgibbons TP. Epicardial adipocytes in the pathogenesis of atrial fibrillation: An update on basic and translational studies. Front Endocrinol (Lausanne) 2023; 14:1154824. [PMID: 37020587 PMCID: PMC10067711 DOI: 10.3389/fendo.2023.1154824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/06/2023] [Indexed: 04/07/2023] Open
Abstract
Epicardial adipose tissue (EAT) is an endocrine organ containing a host of cell types and undoubtedly serving a multitude of important physiologic functions. Aging and obesity cause hypertrophy of EAT. There is great interest in the possible connection between EAT and cardiovascular disease, in particular, atrial fibrillation (AF). Increased EAT is independently associated with AF and adverse events after AF ablation (e.g., recurrence of AF, and stroke). In general, the amount of EAT correlates with BMI or visceral adiposity. Yet on a molecular level, there are similarities and differences between epicardial and abdominal visceral adipocytes. In comparison to subcutaneous adipose tissue, both depots are enriched in inflammatory cells and chemokines, even in normal conditions. On the other hand, in comparison to visceral fat, epicardial adipocytes have an increased rate of fatty acid release, decreased size, and increased vascularity. Several studies have described an association between fibrosis of EAT and fibrosis of the underlying atrial myocardium. Others have discovered paracrine factors released from EAT that could possibly mediate this association. In addition to the adjacent atrial cardiomyocytes, EAT contains a robust stromal-vascular fraction and surrounds the ganglionic plexi of the cardiac autonomic nervous system (cANS). The importance of the cANS in the pathogenesis of atrial fibrillation is well known, and it is quite likely that there is feedback between EAT and the cANS. This complex interplay may be crucial to the maintenance of normal sinus rhythm or the development of atrial fibrillation. The extent the adipocyte is a microcosm of metabolic health in the individual patient may determine which is the predominant rhythm.
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6
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Poggi AL, Gaborit B, Schindler TH, Liberale L, Montecucco F, Carbone F. Epicardial fat and atrial fibrillation: the perils of atrial failure. Europace 2022; 24:1201-1212. [PMID: 35274140 DOI: 10.1093/europace/euac015] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/27/2022] [Indexed: 12/18/2022] Open
Abstract
Obesity is a heterogeneous condition, characterized by different phenotypes and for which the classical assessment with body mass index may underestimate the real impact on cardiovascular (CV) disease burden. An epidemiological link between obesity and atrial fibrillation (AF) has been clearly demonstrated and becomes even more tight when ectopic (i.e. epicardial) fat deposition is considered. Due to anatomical and functional features, a tight paracrine cross-talk exists between epicardial adipose tissue (EAT) and myocardium, including the left atrium (LA). Alongside-and even without-mechanical atrial stretch, the dysfunctional EAT may determine a pro-inflammatory environment in the surrounding myocardial tissue. This evidence has provided a new intriguing pathophysiological link with AF, which in turn is no longer considered a single entity but rather the final stage of atrial remodelling. This maladaptive process would indeed include structural, electric, and autonomic derangement that ultimately leads to overt disease. Here, we update how dysfunctional EAT would orchestrate LA remodelling. Maladaptive changes sustained by dysfunctional EAT are driven by a pro-inflammatory and pro-fibrotic secretome that alters the sinoatrial microenvironment. Structural (e.g. fibro-fatty infiltration) and cellular (e.g. mitochondrial uncoupling, sarcoplasmic reticulum fragmentation, and cellular protein quantity/localization) changes then determine an electrophysiological remodelling that also involves the autonomic nervous system. Finally, we summarize how EAT dysfunction may fit with the standard guidelines for AF. Lastly, we focus on the potential benefit of weight loss and different classes of CV drugs on EAT dysfunction, LA remodelling, and ultimately AF onset and recurrence.
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Affiliation(s)
- Andrea Lorenzo Poggi
- Department of Internal Medicine, First Clinic of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
| | - Bénédicte Gaborit
- Department of Endocrinology, Metabolic Diseases and Nutrition, Pôle ENDO, APHM, Marseille, France
- Aix Marseille Univ, INSERM, INRAE, C2VN Marseille, France
| | - Thomas Hellmut Schindler
- Department of Radiology, Division of Nuclear Medicine, Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Luca Liberale
- Department of Internal Medicine, First Clinic of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
- Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, 10 Largo Benzi, 16132 Genoa, Italy
| | - Fabrizio Montecucco
- Department of Internal Medicine, First Clinic of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
- Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, 10 Largo Benzi, 16132 Genoa, Italy
| | - Federico Carbone
- Department of Internal Medicine, First Clinic of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
- Department of Internal Medicine, IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, 10 Largo Benzi, 16132 Genoa, Italy
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7
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Couselo-Seijas M, Rodríguez-Mañero M, González-Juanatey JR, Eiras S. Updates on epicardial adipose tissue mechanisms on atrial fibrillation. Obes Rev 2021; 22:e13277. [PMID: 34002458 DOI: 10.1111/obr.13277] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 04/19/2021] [Indexed: 02/06/2023]
Abstract
Obesity is a well-known risk factor for atrial fibrillation (AF). Local epi-myocardial or intra-myocardial adiposity caused by aging, obesity, or cardiovascular disease (CVD) is considered to be a better predictor of the risk of AF than general adiposity. Some of the described mechanisms suggest that epicardial adipose tissue (EAT) participates in structural remodeling owing to its endocrine activity or its infiltration between cardiomyocytes. Epicardial fat also wraps up the ganglionated plexi that reach the myocardium. Although the increment of volume/thickness and activity of EAT might modify autonomic activity, autonomic system dysfunction might also change the endocrine activity of epicardial fat in a feedback response. As a result, new preventive therapeutic strategies are focused on reducing adiposity and weight loss before AF ablation or inhibiting autonomic neurotransmitter secretion on fat pads during open-heart surgery to reduce the recurrence or postoperative risk of AF. In this manuscript, we review some of the novel findings regarding the pathophysiology and associated risk factors of AF, with special emphasis on the role of EAT in the electrical, structural, and molecular mechanisms of AF initiation and maintenance. In addition, we have included a brief note provided on epicardial fat preclinical models that could be useful for identifying new therapeutic targets.
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Affiliation(s)
- Marinela Couselo-Seijas
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain.,University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Moisés Rodríguez-Mañero
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - José R González-Juanatey
- University of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,Cardiology group, Health Research Institute, Santiago de Compostela, Spain
| | - Sonia Eiras
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
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8
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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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9
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Couselo-Seijas M, Almengló C, M Agra-Bermejo R, Luis Fernandez Á, Alvarez E, R González-Juanatey J, Eiras S. Higher ACE2 expression levels in epicardial cells than subcutaneous stromal cells from patients with cardiovascular disease: Diabetes and obesity as possible enhancer. Eur J Clin Invest 2021; 51:e13463. [PMID: 33251580 PMCID: PMC7744875 DOI: 10.1111/eci.13463] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/25/2020] [Accepted: 11/25/2020] [Indexed: 12/19/2022]
Abstract
AIMS Obesity, diabetes and cardiovascular disease are associated with COVID-19 risk and severity. Because epicardial adipose tissue (EAT) expresses ACE2, we wanted to identify the main factors associated with ACE2 levels and its cleavage enzyme, ADAM17, in epicardial fat. MATERIALS AND METHODS Epicardial and subcutaneous fat biopsies were obtained from 43 patients who underwent open-heart surgery. From 36 patients, biopsies were used for RNA expression analysis by real-time PCR of ACE1, ACE2 and ADAM17. From 8 patients, stromal vascular cells were submitted to adipogenesis or used for studying the treatment effects on gene expression levels. Soluble ACE2 was determined in supernatants by ELISA. RESULTS Epicardial fat biopsies expressed higher levels of ACE2 (1.53 [1.49-1.61] vs 1.51 [1.47-1.56] a.u., P < .05) and lower ADAM17 than subcutaneous fat (1.67 [1.65-1.70] vs 1.70 [1.66-1.74] a.u., P < .001). Both genes were increased in epicardial fat from patients with type 2 diabetes mellitus (T2DM) (1.62 [1.50-2.28] vs 1.52 [1.49-1.55] a.u., P = .05 for ACE2 and 1.68 [1.66-1.78] vs 1.66 [1.63-1.69] a.u., P < .05 for ADAM17). Logistic regression analysis determined that T2DM was the main associated factor with epicardial ACE2 levels (P < .01). The highest ACE2 levels were found on patients with diabetes and obesity. ACE1 and ACE2 levels were not upregulated by antidiabetic treatment (metformin, insulin or thiazolidinedione). Its cellular levels, which were higher in epicardial than in subcutaneous stromal cells (1.61 [1.55-1.63] vs 1 [1-1.34]), were not correlated with the soluble ACE2. CONCLUSION Epicardial fat cells expressed higher levels of ACE2 in comparison with subcutaneous fat cells, which is enhanced by diabetes and obesity presence in patients with cardiovascular disease. Both might be risk factors for SARS-CoV-2 infection.
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Affiliation(s)
- Marinela Couselo-Seijas
- Translational Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Cristina Almengló
- University of Santiago de Compostela, Santiago de Compostela, Spain.,Cardiology Group, Health Research Institute, Santiago de Compostela, Spain
| | - Rosa M Agra-Bermejo
- Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Ángel Luis Fernandez
- University of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain.,Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Ezequiel Alvarez
- University of Santiago de Compostela, Santiago de Compostela, Spain.,Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Jose R González-Juanatey
- University of Santiago de Compostela, Santiago de Compostela, Spain.,Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Sonia Eiras
- Translational Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
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10
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Couselo-Seijas M, Lopez-Canoa JN, Fernandez ÁL, González-Melchor L, Seoane LM, Duran-Muñoz D, Rozados-Luis A, González-Juanatey JR, Rodríguez-Mañero M, Eiras S. Inflammatory and lipid regulation by cholinergic activity in epicardial stromal cells from patients who underwent open-heart surgery. J Cell Mol Med 2020; 24:10958-10969. [PMID: 32767737 PMCID: PMC7521153 DOI: 10.1111/jcmm.15727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/26/2020] [Accepted: 07/18/2020] [Indexed: 01/14/2023] Open
Abstract
The modulation of acetylcholine (ACh) release by botulinum toxin injection into epicardial fat diminishes atrial fibrillation (AF) recurrence. These results suggest an interaction between autonomic imbalance and epicardial fat as risk factors of AF. Our aim was to study the inflammatory, lipidic and fibroblastic profile of epicardial stroma from patients who underwent open‐heart surgery, their regulation by cholinergic activity and its association with AF. We performed in vitro and ex vivo assays from paired subcutaneous and epicardial stromal cells or explants from 33 patients. Acute ACh effects in inflammation and lipid‐related genes were analysed by qPCR, in intracellular calcium mobilization were performed by Fluo‐4 AM staining and in neutrophil migration by trans‐well assays. Chronic ACh effects on lipid accumulation were visualized by AdipoRed. Plasma protein regulation by parasympathetic denervation was studied in vagotomized rats. Our results showed a higher pro‐inflammatory profile in epicardial regarding subcutaneous stromal cells. Acute ACh treatment up‐regulated monocyte chemoattractant protein 1 levels. Chronic ACh treatment improved lipid accumulation within epicardial stromal cells (60.50% [22.82‐85.13] vs 13.85% [6.17‐23.16], P < .001). Additionally, patients with AF had higher levels of fatty acid‐binding protein 4 (1.54 ± 0.01 vs 1.47 ± 0.01, P = .005). Its plasma levels were pronouncedly declined in vagotomized rats (2.02 ± 0.21 ng/mL vs 0.65 ± 0.23 ng/mL, P < .001). Our findings support the characterization of acute or chronic cholinergic activity on epicardial stroma and its association with AF.
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Affiliation(s)
- Marinela Couselo-Seijas
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain.,University of Santiago de Compostela, Santiago de Compostela, Spain
| | - José N Lopez-Canoa
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain
| | - Ángel L Fernandez
- University of Santiago de Compostela, Santiago de Compostela, Spain.,Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Laila González-Melchor
- Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Luisa M Seoane
- Endocrine Physiopathology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERobn, Madrid, Spain
| | - Darío Duran-Muñoz
- Heart Surgery Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Adriana Rozados-Luis
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain
| | - José Ramón González-Juanatey
- University of Santiago de Compostela, Santiago de Compostela, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,Cardiology Group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Moisés Rodríguez-Mañero
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain.,Cardiovascular Department, University Hospital of Santiago de Compostela, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
| | - Sonia Eiras
- Translational Cardiology group, Health Research Institute, Santiago de Compostela, Spain.,CIBERCV, Madrid, Spain
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