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Folli F, Centofanti L, Magnani S, Tagliabue E, Bignotto M, La Sala L, Pontiroli AE. Obesity effect on newly diagnosed and recurrent post-ablation atrial fibrillation: a systematic review and meta-analysis. J Endocrinol Invest 2024; 47:1051-1066. [PMID: 37962809 DOI: 10.1007/s40618-023-02225-x] [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: 08/03/2023] [Accepted: 10/11/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND AND AIMS The role of overweight and obesity in the development of atrial fibrillation (AF) is well established; however, the differential effect on the occurrence and recurrence of AF remains uncertain. The aim of this review is to compare the effect of underweight and varying degrees of obesity on onset of AF and in recurrent post-ablation AF, and, when possible, in relation to sex. METHODS A systematic literature search was conducted in PubMed, Embase, and Cochrane Library from inception to January 31, 2023. Studies reporting frequency of newly-diagnosed AF and of recurrent post-ablation AF in different BMI categories, were included. 3400 records were screened and 50 met the inclusion criteria. Standardized data search and abstraction were performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) Statement. Data were extracted from the manuscripts and were analyzed using a random effect model. The outcome was the occurrence of AF in population studies and in patients undergoing ablation. RESULTS Data from 50 studies were collected, of which 27 for newly-diagnosed AF and 23 for recurrent post-ablation AF, for a total of 15,134,939 patients, of which 15,115,181 in studies on newly-diagnosed AF and 19,758 in studies on recurrent post-ablation AF. Compared to normal weight, the increase in AF was significant (p < 0.01) for overweight, obese, and morbidly obese patients for newly-diagnosed AF, and for obese and morbidly obese patients for recurrent post-ablation AF. Newly-diagnosed AF was more frequent in obese female than obese male patients. CONCLUSION The effect of increased BMI was greater on the onset of AF, and obese women were more affected than men.
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Affiliation(s)
- F Folli
- Department of Health Sciences, University of Milan, Via A. Di Rudinì 8, 20142, Milan, Italy.
| | - L Centofanti
- Department of Health Sciences, University of Milan, Via A. Di Rudinì 8, 20142, Milan, Italy
| | - S Magnani
- Division of Cardiology, Ospedale San Paolo, 20142, Milan, Italy
| | - E Tagliabue
- Laboratory of Cardiovascular and Dysmetabolic Diseases, PST-Via Fantoli 18/15, 20138, Milan, Italy and Value-Based Healthcare Unit, IRCCS MultiMedica, 20099, Sesto San Giovanni, Milan, Italy
| | - M Bignotto
- Department of Health Sciences, University of Milan, Via A. Di Rudinì 8, 20142, Milan, Italy
| | - L La Sala
- Laboratory of Cardiovascular and Dysmetabolic Diseases, PST-Via Fantoli 18/15, 20138, Milan, Italy and Value-Based Healthcare Unit, IRCCS MultiMedica, 20099, Sesto San Giovanni, Milan, Italy
| | - A E Pontiroli
- Department of Health Sciences, University of Milan, Via A. Di Rudinì 8, 20142, Milan, Italy.
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2
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Akhtar KH, Jafry AH, Beard C, Nasir YM, Agarwal S, Khan J, Clifton S, Reece J, Munir MB, Deshmukh A, DeSimone CV, Jackman WM, Stavrakis S, Po S, Sanders P, Asad ZUA. The effect of weight loss on recurrence of atrial fibrillation after catheter ablation: A systematic review and meta-analysis. J Cardiovasc Electrophysiol 2023; 34:2514-2526. [PMID: 37787013 DOI: 10.1111/jce.16090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/04/2023]
Abstract
BACKGROUND Obesity is associated with an increased risk of developing recurrent atrial fibrillation (AF) after catheter ablation (CA). However, the current data on weight loss interventions show inconsistent results in preventing the recurrence of AF after CA. METHODS We conducted a systematic search in MEDLINE and EMBASE to identify studies that reported the outcome of recurrence of AF after CA in obese patients undergoing weight interventions. The subgroup analysis included: (1) Weight loss versus no weight loss, (2) >10% weight loss versus <10% weight loss, (3) <10% weight loss versus no weight loss, (4) Follow-up <12 months, and (5) Follow-up >12 months after CA. Mantel-Haenszel risk ratios with a 95% confidence interval (CI) were calculated using a random effects model and for heterogeneity, I2 statistics were reported. RESULTS A total of 10 studies (one randomized controlled trial and nine observational studies) comprising 1851 patients were included. The recurrence of AF was numerically reduced in the weight loss group (34.5%) versus no weight loss group (58.2%), but no statistically significant difference was observed (risk ratio [RR] = 0.76; 95% CI: 0.49-1.18, p = .22). However, there was a statistically significant reduction in recurrence of AF with weight loss versus no weight loss at follow-up >12 months after CA (RR = 0.47; 95% CI: 0.32-0.68, p < .0001). At follow-up >12 months after CA, both >10% weight loss versus <10% weight loss (RR = 0.49; 95% CI: 0.31-0.80, p = .004) and <10% weight loss versus no weight loss (RR = 0.39; 95% CI: 0.31-0.49, p < .00001) were associated with a statistically significant reduction in recurrent AF. CONCLUSION In patients with AF undergoing CA, weight loss is associated with reducing recurrent AF at > 12 months after ablation and these benefits are consistently seen with both >10% and <10% weight loss. The benefits of weight loss in preventing recurrent AF after CA should be examined in larger studies with extended follow-up duration.
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Affiliation(s)
- Khawaja Hassan Akhtar
- Department of Medicine, Section of Cardiovascular Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Ali Haider Jafry
- Department of Medicine, Section of Cardiovascular Medicine, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Christopher Beard
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Yusra Minahil Nasir
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Siddharth Agarwal
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Jehanzeb Khan
- Department of Medicine, Section of Cardiovascular Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Shari Clifton
- Robert M. Bird Health Sciences Library, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Jessica Reece
- Department of Biostatistics and Epidemiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Muhammad Bilal Munir
- Division of Cardiovascular Medicine, University of California Davis, Sacramento, California, USA
| | - Abhishek Deshmukh
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Warren M Jackman
- Department of Medicine, Section of Cardiovascular Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Stavros Stavrakis
- Department of Medicine, Section of Cardiovascular Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Sunny Po
- Department of Medicine, Section of Cardiovascular Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | | | - Zain Ul Abideen Asad
- Department of Medicine, Section of Cardiovascular Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
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3
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Ahammed MR, Ananya FN. Impact of Weight Loss on Atrial Fibrillation. Cureus 2023; 15:e46232. [PMID: 37908920 PMCID: PMC10614082 DOI: 10.7759/cureus.46232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2023] [Indexed: 11/02/2023] Open
Abstract
Atrial fibrillation (AF) is a prevalent and persistent irregular heart rhythm that is expected to dramatically increase in prevalence in the next few decades. Several established cardiovascular risk factors, including obesity, play a significant impact in developing AF. Obesity, characterized by a high body mass index (BMI), is particularly concerning as it directly elevates the risk of AF and other cardiovascular comorbidities. This review explores the complex interplay between obesity and AF, specifically highlighting the reversible nature of obesity-induced cardiac remodeling with weight loss. As we will soon discover, several insights from weight management offer promising strategies for AF prevention and management.
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Affiliation(s)
- Md Ripon Ahammed
- Internal Medicine, Icahn School of Medicine at Mount Sinai, NYC Health and Hospitals, New York City Health + Hospital, Queens, New York, USA
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4
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Association between weight loss and outcomes in patients undergoing atrial fibrillation ablation: a systematic review and dose-response meta-analysis. Nutr Metab (Lond) 2023; 20:5. [PMID: 36721216 PMCID: PMC9890842 DOI: 10.1186/s12986-023-00724-5] [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: 05/18/2022] [Accepted: 01/04/2023] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Obesity is an strong risk factor for atrial fibrillation (AF), and obesity can affect the prognosis of AF. However, the role of weight loss on outcomes after ablation remains unclear. OBJECTIVES This study aims to determine the relationship between weight loss and outcomes in patients with AF ablation, as well as the potential dose-response relationship. METHODS The Cochrane Library, PubMed, and Embase databases were searched to identify studies that reported a relationship between weight loss and ablation up to August 17, 2021. Relative risks (RRs) were pooled using random-effects models. RESULTS One randomized, open-labeled clinical trial and seven cohort studies involving 1283 patients were included. The mean body mass index of all included studies was over 30 kg/m2. The clinical trial showed a non-significant benefit of weight loss intervention on AF recurrence (Odd risk [OR] = 1.02, 95% confidence interval [CI] 0.70-1.47). Meta-analysis based on observational studies showed that the recurrence rate of AF after ablation was significantly reduced (RR = 0.43, 95% CI 0.22-0.81, I2 = 97%) in relatively obese patients with weight loss compared with the control group. Each 10% reduction in weight was associated with a decreased risk of AF recurrence after ablation (RR = 0.54, 95% CI 0.33-0.88) with high statistical heterogeneity (I2 = 76%). An inverse linear association (Pnon-linearity = 0.27) between AF relapse and increasing weight loss was found. CONCLUSIONS Our results first suggest an inverse dose-response association between weight loss and risk of recurrent AF after ablation, with moderate certainty.
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Weight loss and atrial fibrillation: a review. Curr Opin Cardiol 2023; 38:6-10. [PMID: 36598444 DOI: 10.1097/hco.0000000000001004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PURPOSE OF REVIEW Despite technological advancements in catheter ablation, patients with atrial fibrillation often require multiple ablations, with diminishing returns depending on duration and persistence. Although early ablation is vital, modification of atrial fibrillation disease can be achieved with modification of existing risk factors. Obesity is an important modifiable risk factor, but there does not appear to be a consensus on the best method or goal for weight reduction. RECENT FINDINGS The relationship between atrial fibrillation and obesity has been acknowledged. This review examines the clinical evidence demonstrating the benefit of weight reduction in the management of atrial fibrillation. In particular, this review compares the different approaches of recent studies. SUMMARY On the basis of the literature, the authors recommend a structured weight loss programme with dietary and behavioural modifications individualized to each patient and including the implementation of physical activity. Consideration of bariatric surgery is appropriate in certain patients with obesity.
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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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Effect of weight loss on recurrence of atrial fibrillation after ablative therapy: a systematic review and meta-analysis. J Interv Card Electrophysiol 2022; 64:763-771. [PMID: 35258752 DOI: 10.1007/s10840-022-01168-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 02/21/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Landmark trials have shown superiority of ablative therapy over medical therapy in certain subpopulation with atrial fibrillation (AF). Previous studies have demonstrated an association between weight loss and reduced rates of recurrence of AF after ablation. The objective of this study is to determine if weight loss reduces the recurrence of AF after ablation. METHODS An extensive literature search and systematic review of studies of weight loss on recurrence of AF after ablative therapy was performed. Risk ratio (RR) and 95% confidence intervals were measured for weight loss group versus control group in each study, and comparative analysis as well as subgroup analysis was made. RESULTS Eight studies with a total of 1,425 patients were included. Overall, studies of patients who lost weight demonstrated lower recurrence of AF (RR 0.35; 95% CI 0.18-0.67). However, subgroup analysis of studies which included patients who lost ≥10% weight loss from baseline showed lower recurrence of AF (RR 0.18; 95% 0.03-0.89), whereas studies which included patients with <10% weight loss did not (RR 1.00; 95% 0.51-1.96). Studies of patients who had less than 12-month history of AF (RR 0.24; 95% CI 0.11-0.57) and those who lost weight prior to ablation (RR 0.40; 95% CI 0.20-0.79) also had lower recurrence of AF. CONCLUSION Weight loss is associated with lower long-term recurrence of AF after ablative therapy. Studies of patients with ≥10% weight loss, less than 12-month history of AF, and weight loss prior to ablation experience lower recurrence of AF.
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8
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Prasitlumkum N, Chokesuwattanaskul R, Kaewput W, Thongprayoon C, Bathini T, Boonpheng B, Vallabhajosyula S, Cheungpasitporn W, Jongnarangsin K. Utilization and in-hospital complications of catheter ablation for atrial fibrillation in patients with obesity and morbid obesity. Clin Cardiol 2022; 45:407-416. [PMID: 35170775 PMCID: PMC9019886 DOI: 10.1002/clc.23795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 01/18/2022] [Accepted: 02/02/2022] [Indexed: 12/23/2022] Open
Abstract
Background Real‐world data on atrial fibrillation (AF) ablation outcomes in obese populations have remained scarce, especially the relationship between obesity and in‐hospital AF ablation outcome. Hypothesis Obesity is associated with higher complication rates and higher admission trend for AF ablation. Methods We drew data from the US National Inpatient Sample to identify patients who underwent AF ablation between 2005 and 2018. Sociodemographic and patients' characteristics data were collected, and the trend, incidence of catheter ablation complications and mortality were analyzed, and further stratified by obesity classification. Results A total of 153 429 patients who were hospitalized for AF ablation were estimated. Among these, 11 876 obese patients (95% confidence interval [CI]: 11 422–12 330) and 10 635 morbid obese patients (95% CI: 10 200–11 069) were observed. There was a substantial uptrend admission, up to fivefold, for AF ablation in all obese patients from 2005 to 2018 (p < .001). Morbidly obese patients were statistically younger, while coexisting comorbidities were substantially higher than both obese and nonobese patients (p < .01) Both obesity and morbid obesity were significantly associated with an increased risk of total bleeding, and vascular complications (p < .05). Only morbid obesity was significantly associated with an increased risk of ablation‐related complications, total infection, and pulmonary complications (p < .01). No difference in‐hospital mortality was observed among obese, morbidly obese, and nonobese patients. Conclusion Our study observed an uptrend in the admission of obese patients undergoing AF ablation from 2005 through 2018. Obesity was associated with higher ablation‐related complications, particularly those who were morbidly obese.
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Affiliation(s)
- Narut Prasitlumkum
- Department of Medicine, University of California Riverside, Riverside, California, USA
| | - Ronpichai Chokesuwattanaskul
- Department of Medicine, Division of Cardiovascular Medicine, King Chulalongkorn Memorial Hospital, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Department of Medicine, Faculty of Medicine, Center of Excellence in Arrhythmia Research Chulalongkorn University, Bangkok, Thailand
| | - Wisit Kaewput
- Department of Medicine, Department of Military and Community Medicine, Division of Nephrology, Phramongkutklao College of Medicine, Bangkok, Thailand
| | | | - Tarun Bathini
- Department of Cardiology, Bassett Medical Center, Cooperstown, New York, USA
| | - Boonphiphop Boonpheng
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA
| | - Saraschandra Vallabhajosyula
- Department of Medicine, Section of Cardiovascular Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | | | - Krit Jongnarangsin
- Division of Cardiac Electrophysiology, University of Michigan Health Care, Ann Arbor, Michigan, USA
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9
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Linz D, Verheule S, Isaacs A, Schotten U. Considerations for the Assessment of Substrates, Genetics and Risk Factors in Patients with Atrial Fibrillation. Arrhythm Electrophysiol Rev 2021; 10:132-139. [PMID: 34777816 PMCID: PMC8576487 DOI: 10.15420/aer.2020.51] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 06/16/2021] [Indexed: 12/25/2022] Open
Abstract
Successful translation of research focussing on atrial arrhythmogenic mechanisms has potential to provide a mechanism-tailored classification and to support personalised treatment approaches in patients with AF. The clinical uptake and clinical implementation of new diagnostic techniques and treatment strategies require translational research approaches on various levels. Diagnostic translation involves the development of clinical diagnostic tools. Additionally, multidisciplinary teams are required for collaborative translation to describe genetic mechanisms, molecular pathways, electrophysiological characteristics and concomitant risk factors. In this article, current approaches for AF substrate characterisation, analysis of genes potentially involved in AF and strategies for AF risk factor assessment are summarised. The authors discuss challenges and obstacles to clinical translation and implementation into clinical practice.
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Affiliation(s)
- Dominik Linz
- Department of Cardiology, Cardiovascular Research Institute Maastricht, Faculty of Health, Medicine and Life Sciences, Maastricht University and Maastricht University Medical Center+, Maastricht, the Netherlands.,Department of Cardiology, Radboud University Medical Centre, Nijmegen, the Netherlands.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.,Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | - Sander Verheule
- Department of Physiology, Cardiovascular Research Institute Maastricht, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Aaron Isaacs
- Department of Physiology, Cardiovascular Research Institute Maastricht, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Ulrich Schotten
- Department of Physiology, Cardiovascular Research Institute Maastricht, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
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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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