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Li H, Song X, Liang Y, Bai X, Liu-Huo WS, Tang C, Chen W, Zhao L. Global, regional, and national burden of disease study of atrial fibrillation/flutter, 1990-2019: results from a global burden of disease study, 2019. BMC Public Health 2022; 22:2015. [PMID: 36329400 PMCID: PMC9632152 DOI: 10.1186/s12889-022-14403-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
Background Data from the Global Burden of Disease, Injury, and Risk Factor Study 2019 (GBD 2019) was used to assess the burden and change in prevalence, incidence, deaths, disability-adjusted life years, and risk factors for atrial fibrillation/flutter in 204 countries and territories between 1990 and 2019. Methods Incidence, prevalence, deaths, disability-adjusted life years (DALYs), and their age-standardized rates of AF/AFL were analyzed by age, sex, socio-demographic index (SDI), and human development index (HDI) using the Global Burden of Disease study 2019 (GBD2019) results,and risk factors for AF/AFL (mainly high systolic blood pressure, high body-mass index, alcohol use, smoking and diet high in sodium) were differentially analyzed. Results There are 59.70 million (95% uncertainty interval (UI) 45.73–75.29 million) AF/AFL patients worldwide in 2019, with 4.72 million (95% uncertainty interval (UI) 3.64–5.96 million) new cases and 0.315 million deaths (95% uncertainty interval (UI) 0.268–0.361 million) and 8.39 million disability-adjusted years (95% uncertainty interval (UI) 6.69–10.54 million). The highest risk factor for deaths, DALYs attributable to AF/AFL in 2019 was high systolic blood pressure, high body-mass index, alcohol use, smoking, and diet high in sodium. It is estimated that between 2030 and 2034, the total incidence of male AF/ AFL will be 16.08 million, and the total number of deaths will be 1.01 million. For females, the total number of incidence is 16.85 million, and the total number of deaths is 1.49 million. Conclusions AF/AFL remains a major global public health problem, although the ASR of prevalence, incidence, and DALY at the worldwide level showed a decreasing trend from 1990 to 2019(the ASR of deaths increased slightly). However, the unfavorable trend observed in this study in countries with lower SDI suggests that current prevention and treatment strategies should be reoriented. Some countries should develop more targeted and specific strategies to prevent the increase of AF/AFL. Supplementary Information The online version contains supplementary material available at 10.1186/s12889-022-14403-2.
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Affiliation(s)
- Hong Li
- grid.410578.f0000 0001 1114 4286Southwest Medical University, Lu Zhou, China
| | - Xuejing Song
- grid.410578.f0000 0001 1114 4286Southwest Medical University, Lu Zhou, China
| | - Yi Liang
- grid.410578.f0000 0001 1114 4286Southwest Medical University, Lu Zhou, China
| | - Xue Bai
- grid.488387.8The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Lu Zhou, China
| | - Wu-Sha Liu-Huo
- grid.488387.8The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Lu Zhou, China
| | - Chao Tang
- grid.488387.8The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Lu Zhou, China
| | - Wen Chen
- grid.410578.f0000 0001 1114 4286Southwest Medical University, Lu Zhou, China
| | - Lizhi Zhao
- grid.488387.8The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Lu Zhou, China
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Magnocavallo M, Vetta G, Trivigno S, Mariani MV, DI Lullo L, Bellasi A, Della Rocca DG, Severino P, Piro A, Giunta G, Quaglione R, Lavalle C. The Connubium among diabetes, chronic kidney disease and atrial fibrillation. Minerva Cardiol Angiol 2022; 70:393-402. [PMID: 35212508 DOI: 10.23736/s2724-5683.22.05891-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The burden of cardiovascular comorbid conditions was significantly higher in patients with Atrial Fibrillation (AF); most of them are affected by hypertension, Chronic Kidney Disease (CKD) and/or Diabetes Mellitus (DM). DM represents a well-known risk factor for the development and maintenance of AF; the coexistence of DM and AF is also associated with an increased risk of mortality and stroke. Moreover, DM is currently the main cause of renal impairment and the leading cause of dialysis in the world. The hyperglycemia is responsible for inducing redox imbalance and both systemic and intrarenal inflammation, playing a critical role in the pathogenesis of diabetic kidney disease. Long-term thromboembolic preventive therapy in AF patients with DM and CKD may be more challenging because both DM and CKD have been independently associated with an increased thromboembolic and bleeding risk, which results from the prothrombotic and pro-inflammatory status. Vitamin K Antagonists (VKAs) are characterized by numerous critical issues such as a narrow therapeutic window, increased tissue calcification and an unfavourable risk/benefit ratio with low stroke prevention effect and augmented risk of major bleeding. On the other hand, Direct Oral Anticoagulants (DOACs) are currently contraindicated in dialysis patients even if mounting evidence suggests that they may have a nephroprotective role in AF patients with DM and CKD. Consequently, the choice of anticoagulant therapy in this setting of patient seems to be very challenging. The aim of this review is to investigate the role of DOACs in diabetic patients and its nephroprotective role by reviewing the current literature.
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Affiliation(s)
- Michele Magnocavallo
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Giampaolo Vetta
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Sara Trivigno
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Marco V Mariani
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Luca DI Lullo
- Department of Nephrology and Dialysis, L. Parodi - Delfino Hospital, Colleferro, Roma, Italy
| | - Antonio Bellasi
- Innovation and Brand Reputation Unit, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | | | - Paolo Severino
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Agostino Piro
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Giuseppe Giunta
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Raffaele Quaglione
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy
| | - Carlo Lavalle
- Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, Sapienza University of Rome, Rome, Italy -
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Moula AI, Parrini I, Tetta C, Lucà F, Parise G, Rao CM, Mauro E, Parise O, Matteucci F, Gulizia MM, La Meir M, Gelsomino S. Obstructive Sleep Apnea and Atrial Fibrillation. J Clin Med 2022; 11:jcm11051242. [PMID: 35268335 PMCID: PMC8911205 DOI: 10.3390/jcm11051242] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 12/14/2022] Open
Abstract
Atrial fibrillation (AF) is the most common arrhythmia, increasing with age and comorbidities. Obstructive sleep apnea (OSA) is a chronic sleep disorder more common in older men. It has been shown that OSA is linked to AF. Nonetheless, the prevalence of OSA in patients with AF remains unknown because OSA is significantly underdiagnosed. This review, including 54,271 patients, carried out a meta-analysis to investigate the association between OSA and AF. We also performed a meta-regression to explore cofactors influencing this correlation. A strong link was found between these two disorders. The incidence of AF is 88% higher in patients with OSA. Age and hypertension independently strengthened this association, indicating that OSA treatment could help reduce AF recurrence. Further research is needed to confirm these findings. Atrial Fibrillation (AF) is the most common arrhythmia, increasing with age and comorbidities. Obstructive sleep apnea (OSA) is a regulatory respiratory disorder of partial or complete collapse of the upper airways during sleep leading to recurrent pauses in breathing. OSA is more common in older men. Evidence exists that OSA is linked to AF. Nonetheless, the prevalence of OSA in patients with AF remains unknown because OSA is underdiagnosed. In order to investigate the incidence of AF in OSA patients, we carried out a meta-analysis including 20 scientific studies with a total of 54,271 subjects. AF was present in 4801 patients of whom 2203 (45.9%) had OSA and 2598 (54.1%) did not. Of a total of 21,074 patients with OSA, 2203 (10.5%) had AF and 18,871 (89.5%) did not. The incidence of AF was 88% higher in patients with OSA. We performed a meta-regression to explore interacting factors potentially influencing the occurrence of AF in OSA. Older age and hypertension independently strengthened this association. The clinical significance of our results is that patients with OSA should be referred early to the cardiologist. Further research is needed for the definition of the mechanisms of association between AF and OSA.
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Affiliation(s)
- Amalia Ioanna Moula
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
| | - Iris Parrini
- Cardiology Department, Mauriziano Umberto I Hospital, 10128 Torino, Italy; (I.P.); (C.M.R.)
| | - Cecilia Tetta
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
| | - Fabiana Lucà
- Cardiology Department, Big Metropolitan Hospital, 89129 Reggio Calabria, Italy;
| | - Gianmarco Parise
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
| | | | - Emanuela Mauro
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
| | - Orlando Parise
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
| | - Francesco Matteucci
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
| | - Michele Massimo Gulizia
- Cardiology Department, Garibaldi Nesima Hospital, 95122 Catania, Italy;
- Heart Care Foundation, 50121 Firenze, Italy
| | - Mark La Meir
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
- Cardiothoracic Department, Brussels University Hospital, 1099 Jette, Belgium
| | - Sandro Gelsomino
- Cardiothoracic Department, Maastricht University Hospital, 6229 HX Maastricht, The Netherlands; (A.I.M.); (C.T.); (G.P.); (E.M.); (O.P.); (F.M.); (M.L.M.)
- Cardiothoracic Department, Brussels University Hospital, 1099 Jette, Belgium
- Correspondence:
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Goette A, Lendeckel U. Atrial Cardiomyopathy: Pathophysiology and Clinical Consequences. Cells 2021; 10:cells10102605. [PMID: 34685585 PMCID: PMC8533786 DOI: 10.3390/cells10102605] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 09/26/2021] [Indexed: 12/18/2022] Open
Abstract
Around the world there are 33.5 million patients suffering from atrial fibrillation (AF) with an annual increase of 5 million cases. Most AF patients have an established form of an atrial cardiomyopathy. The concept of atrial cardiomyopathy was introduced in 2016. Thus, therapy of underlying diseases and atrial tissue changes appear as a cornerstone of AF therapy. Furthermore, therapy or prevention of atrial endocardial changes has the potential to reduce atrial thrombogenesis and thereby cerebral stroke. The present manuscript will summarize the underlying pathophysiology and remodeling processes observed in the development of an atrial cardiomyopathy, thrombogenesis, and atrial fibrillation. In particular, the impact of oxidative stress, inflammation, diabetes, and obesity will be addressed.
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Affiliation(s)
- Andreas Goette
- Department of Cardiology and Intensive Care Medicine, St. Vincenz Hospital, 33098 Paderborn, Germany
- MAESTRIA Consortium/AFNET, 48149 Münster, Germany
- Correspondence:
| | - Uwe Lendeckel
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, 17475 Greifswald, Germany;
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Imaging Techniques for the Study of Fibrosis in Atrial Fibrillation Ablation: From Molecular Mechanisms to Therapeutical Perspectives. J Clin Med 2021; 10:jcm10112277. [PMID: 34073969 PMCID: PMC8197293 DOI: 10.3390/jcm10112277] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/05/2021] [Accepted: 05/20/2021] [Indexed: 12/24/2022] Open
Abstract
Atrial fibrillation (AF) is the most prevalent form of cardiac arrhythmia. It is often related to diverse pathological conditions affecting the atria and leading to remodeling processes including collagen accumulation, fatty infiltration, and amyloid deposition. All these events generate atrial fibrosis, which contribute to beget AF. In this scenario, cardiac imaging appears as a promising noninvasive tool for monitoring the presence and degree of LA fibrosis and remodeling. The aim of this review is to comprehensively examine the bench mechanisms of atrial fibrosis moving, then to describe the principal imaging techniques that characterize it, such as cardiac magnetic resonance (CMR) and multidetector cardiac computed tomography (MDCT), in order to tailor atrial fibrillation ablation to each individual.
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Sultan A, Jacobson M, Adeghate E, Oulhaj A, Shafiullah M, Qureshi A, Howarth FC. Effects of obesity and diabesity on heart rhythm in the Zucker rat. Clin Exp Pharmacol Physiol 2021; 48:735-747. [PMID: 33609055 DOI: 10.1111/1440-1681.13473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/19/2021] [Indexed: 12/24/2022]
Abstract
Obesity and type 2 diabetes mellitus are risk factors for hypertension, coronary heart disease, cardiac arrhythmias including atrial fibrillation, heart failure and sudden cardiac death. The effects of obesity and diabesity on heart rhythm were investigated in the Zucker diabetic fatty (ZDF) and Zucker fatty (ZF) compared to the Zucker lean (ZL) control rat. In vivo biotelemetry techniques were used to assess the electrocardiogram and other cardiac and metabolic parameters. ZDF rats were characterized by age-dependent elevations in fasting and non-fasting blood glucose, glucose intolerance and weight gain and ZF rats were characterized by smaller elevations in fasting and non-fasting blood glucose and greater weight gain compared to ZL rats. Heart rate (HR) was progressively reduced in ZDF, ZF and ZL rats. At 195 days (6.5 months) of age there were significant differences in HR between ZDF (265 ± 8 bpm, n = 10), ZF (336 ± 9 bpm, n = 10) and ZL (336 ± 10 bpm, n = 10) rats and significant differences in HRV between ZDF (22 ± 1 bpm, n = 10), ZF (27 ± 1 bpm, n = 10) and ZL (31 ± 1 bpm, n = 10) rats. Power spectral analysis revealed no significant (P > 0.05) differences in HRV at low frequencies, reduced HRV at high frequencies and increased sympathovagal balance in ZDF compared to ZF and ZL rats. HR was reduced by ageing and additionally reduced by diabesity in the absence of changes in physical activity and body temperature. Reductions in HRV associated with altered sympathovagal drive might partly underlie disturbed HR in the ZDF rat. Possible explanations for reduced HR and future mechanistic studies are discussed.
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Affiliation(s)
- Ahmed Sultan
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, UAE
| | | | - Ernest Adeghate
- Department of Anatomy, College of Medicine & Health Sciences, UAE University, Al Ain, UAE
| | - Abderrahim Oulhaj
- Institute of Public Health, College of Medicine & Health Sciences, UAE University, Al Ain, UAE
| | - Mohamed Shafiullah
- Department of Pharmacology, College of Medicine & Health Sciences, UAE University, Al Ain, UAE
| | - Anwar Qureshi
- Department of Physiology, College of Medicine & Health Sciences, UAE University, Al Ain, UAE
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Pellicano R, Ianiro G, Fagoonee S, Settanni CR, Gasbarrini A. Review: Extragastric diseases and Helicobacter pylori. Helicobacter 2020; 25 Suppl 1:e12741. [PMID: 32918343 DOI: 10.1111/hel.12741] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The involvement of Helicobacter pylori infection in many extra-gastroduodenal manifestations remains a fascinating field of investigation. However, for several of these supposed associations, the potential pathogenic mechanism remains unclear. The present review highlights the main associations of H pylori with extra-gastroduodenal manifestations reported during the last year. We searched for the most relevant studies on this topic, published between April 2019 and March 2020, identified using the term "Helicobacter" in the MEDLINE/Pubmed database. Consistent data emerged from studies investigating metabolic syndrome and ischaemic cardiovascular diseases. Other reported fields of investigation were hepatology, especially focused on non-alcoholic steatohepatitis, neurology, including Parkinson's disease and Alzheimer's disease, as well as dermatology. Inflammatory bowel disease (IBD), that comprises Crohn's disease and ulcerative colitis, may originate from a dysregulation of the host's immune response to commensal bacteria in individuals with genetic predisposition. The reduction of biodiversity and other specific imbalances in the faecal microbiome composition of IBD patients compared to that of healthy controls support this hypothesis. In this context, an inverse correlation between H pylori infection and IBD prevalence has been confirmed. Similar results were found in patients with kidney diseases and allergic manifestations. There are indications of the possible involvement of H pylori infection in metabolic syndrome and ischaemic cardiovascular diseases. However, due to a series of factors linked to study designs and the multifactorial pathogenesis of some diseases, further studies are needed.
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Affiliation(s)
| | - Gianluca Ianiro
- Digestive Disease Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging (CNR) c/o Molecular Biotechnology Center, Turin, Italy
| | - Carlo R Settanni
- Digestive Disease Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Catholic University of Sacred Heart, Rome, Italy
| | - Antonio Gasbarrini
- Digestive Disease Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Catholic University of Sacred Heart, Rome, Italy
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Mari A, Khoury T, Daud G, Lubany A, Safadi M, Sbeit W, Pellicano R, Mahamid M. The yield, effectiveness and safety of gastroscopy in management of early postbariatric upper gastrointestinal pain. MINERVA CHIR 2020; 75:164-168. [PMID: 32550725 DOI: 10.23736/s0026-4733.20.08282-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Upper gastrointestinal (GI) symptoms are prevalent among patients after -bariatric surgeries. Gastroscopy is an important procedure to investigate symptoms. Our primary aim was to evaluate the yield, effectiveness and safety of gastroscopy procedure obtained in a 3-months period after bariatric operation for exploring upper GI symptoms origin. METHODS Single center, retrospective study at the EMMS Nazareth Hospital from 2010 to 2018. All patients who underwent gastric-bypass (either Roux-en-Y[R-en-Y] or Mini-gastric bypass [MGB]) and who experienced early upper GI symptoms were included in the study. RESULTS A total of 428 were included in the study. Among them, 154 patients (36%) underwent R-en-Y surgery and 274 (64%) underwent MGB. Baseline characteristics were similar in the two groups. The mean age in the R-en-Y group was 42.3±10.8 vs. 42.8±11.2 in the MGB group. Thirty-nine patients underwent gastroscopy, more in the R-en-Y group compared to MGB group (11.6% vs. 7.6%, P<0.005). In the MGB group, more patients had normal surgical anatomy (23.1%) vs. 12.8% in the R-en-Y group, and the prevalence of erosive esophagitis was 14.2% in the MBG group vs. 5.5% in the R-en-Y group, P<0.005. On the other hand, marginal ulcer was more frequent after R-en-Y than MGB surgery (16.6% vs. 9.5%, P<0.005). No procedural related complication was observed in both groups. CONCLUSIONS Upper GI symptoms in the early postbariatric surgery period are common with most endoscopic examination revealing normal postsurgical anatomy. In this setting, gastroscopy is safe, without procedural related complications.
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Affiliation(s)
- Amir Mari
- Department of Gastroenterology and Endoscopy United, The Nazareth Hospital, EMMS, Nazareth, Israel - .,Faculty of Medicine, Bar-Ilan University, Safed, Israel -
| | - Tawfik Khoury
- Department of Gastroenterology and Endoscopy United, The Nazareth Hospital, EMMS, Nazareth, Israel.,Faculty of Medicine, Bar-Ilan University, Safed, Israel.,Department of Gastroenterology, Galilee Medical Center, Nahariya, Israel.,Faculty of Medicine in the Galilee, Bar-Ilan University, Safed, Israel
| | - George Daud
- Department of Bariatric Surgery, The Nazareth Hospital, EMMS, Nazareth, Israel
| | - Ahmad Lubany
- Department of Bariatric Surgery, The Nazareth Hospital, EMMS, Nazareth, Israel
| | - Mohammad Safadi
- Department of Bariatric Surgery, The Nazareth Hospital, EMMS, Nazareth, Israel
| | - Wisam Sbeit
- Department of Gastroenterology, Galilee Medical Center, Nahariya, Israel.,Faculty of Medicine in the Galilee, Bar-Ilan University, Safed, Israel
| | | | - Mahmud Mahamid
- Department of Gastroenterology and Endoscopy United, The Nazareth Hospital, EMMS, Nazareth, Israel.,Faculty of Medicine, Bar-Ilan University, Safed, Israel.,Department of Gastroenterology, Sharee Zedek Medical Center, Jerusalem, Israel
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Martinez-Mateu L, Saiz J, Aromolaran AS. Differential Modulation of IK and ICa,L Channels in High-Fat Diet-Induced Obese Guinea Pig Atria. Front Physiol 2019; 10:1212. [PMID: 31607952 PMCID: PMC6773813 DOI: 10.3389/fphys.2019.01212] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 09/05/2019] [Indexed: 12/31/2022] Open
Abstract
Obesity mechanisms that make atrial tissue vulnerable to arrhythmia are poorly understood. Voltage-dependent potassium (IK, IKur, and IK1) and L-type calcium currents (ICa,L) are electrically relevant and represent key substrates for modulation in obesity. We investigated whether electrical remodeling produced by high-fat diet (HFD) alone or in concert with acute atrial stimulation were different. Electrophysiology was used to assess atrial electrical function after short-term HFD-feeding in guinea pigs. HFD atria displayed spontaneous beats, increased IK (IKr + IKs) and decreased ICa,L densities. Only with pacing did a reduction in IKur and increased IK1 phenotype emerge, leading to a further shortening of action potential duration. Computer modeling studies further indicate that the measured changes in potassium and calcium current densities contribute prominently to shortened atrial action potential duration in human heart. Our data are the first to show that multiple mechanisms (shortened action potential duration, early afterdepolarizations and increased incidence of spontaneous beats) may underlie initiation of supraventricular arrhythmias in obese guinea pig hearts. These results offer different mechanistic insights with implications for obese patients harboring supraventricular arrhythmias.
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Affiliation(s)
- Laura Martinez-Mateu
- Centro de Investigación e Innovación en Bioingeniería, Universitat Politècnica de València, Valencia, Spain
| | - Javier Saiz
- Centro de Investigación e Innovación en Bioingeniería, Universitat Politècnica de València, Valencia, Spain
| | - Ademuyiwa S Aromolaran
- Cardiac Electrophysiology and Metabolism Research Group, VA New York Harbor Healthcare System, Brooklyn, NY, United States.,Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, NY, United States.,Department of Physiology & Cellular Biophysics, Columbia University, New York, NY, United States
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Affiliation(s)
- Gianni Testino
- Alcohological Regional Center of Liguria, ASL3 Liguria, San Martino Polyclinic Hospital, Genoa, Italy -
| | - Silvia Leone
- Alcohological Regional Center of Liguria, ASL3 Liguria, San Martino Polyclinic Hospital, Genoa, Italy
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