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OUP accepted manuscript. Eur Heart J Cardiovasc Imaging 2022; 23:970-978. [DOI: 10.1093/ehjci/jeac070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 03/24/2022] [Indexed: 11/13/2022] Open
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Immunofluorescent Localization of Plakoglobin Is Altered in Endomyocardial Biopsy Samples from Dogs with Clinically Relevant Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC). Vet Sci 2021; 8:vetsci8110248. [PMID: 34822621 PMCID: PMC8623220 DOI: 10.3390/vetsci8110248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 11/24/2022] Open
Abstract
Diagnosing the early stages of canine Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) is complicated by day-to-day arrhythmia variability, and absence of reliable, transthoracic echocardiographic features. Definitive diagnosis requires histopathologic identification of transmural fibrofatty replacement of the right ventricle. Reduction of immunofluorescent signal for plakoglobin (PG) at the intercalated disc (ID) is reported in ARVC-affected humans and boxers. Our objective was to determine whether reduced immunofluorescent signal for PG in endomyocardial biopsy samples (EMBs) correspond with a histopathologic diagnosis of ARVC. Here, 49 dogs were evaluated: 43 with advanced cardiac disease and 6 non-clinical boxers with mild to moderate ventricular arrhythmia (VA) burden. EMBs were obtained from all dogs; samples were prepared with antibodies recognizing cadherin (PC) and PG and evaluated with confocal microscopy. Investigators were blinded to breed and clinical status. ARVC was histopathologically diagnosed in 8 out of 49 dogs. Of these, three out of eight had clinical signs consistent with ARVC (two boxers, one English bulldog) and reduced PG signal at ID; five out of eight were non-clinical boxers with moderate VA and no reduction in PG. A total of 41 out of 49 dogs were histopathologically diagnosed with non-ARVC cardiac disease; 1 out of 41 showed reduction of PG at ID, while 40 out of 41 had no PG reduction. These results suggest that EMB PG signal is reduced in dogs with advanced ARVC, but not in the occult phase of the disease. Additionally, presence of PG at ID supports a diagnosis of non-ARVC cardiac disease in dogs with clinical signs. These results may offer an additional test that helps differentiate advanced ARVC from other myocardial diseases.
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陈 少, 孙 超, 王 新, 张 媛, 刘 书. [Arrhythmogenic right ventricular cardiomyopathy associated with arrhythmia-induced cardiomyopathy: A case report]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2021; 53:1002-1006. [PMID: 34650309 PMCID: PMC8517676 DOI: 10.19723/j.issn.1671-167x.2021.05.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Indexed: 06/13/2023]
Abstract
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a kind of inherited cardio-myopathy, which is characterized by fibro-fatty replacement of right ventricular myocardium, leading to ventricular arrhythmia. However, rapid atrial arrhythmias are also common, including atrial fibrillation, atrial flutter and atrial tachycardia. Long term rapid atrial arrhythmia can lead to further deterioration of cardiac function. This case is a 51-year-old male. He was admitted to Department of Cardiology, Peking University Third Hospital with palpitation and fatigue after exercise. Electrocardiogram showed incessant atrial tachycardia. Echocardiography revealed dilation of all his four chambers, especially the right ventricle, with the left ventricular ejection fraction of 40% and the right ventricular hypokinesis. Cardiac magnetic resonance imaging found that the right ventricle was significantly enlarged, and the right ventricular aneurysm had formed; the right ventricular ejection fraction was as low as 8%, and the left ventricular ejection fraction was 35%. The patients met the diagnostic criteria of ARVC, and both left and right ventricles were involved. His physical activities were restricted, and metoprolol, digoxin, spironolactone and ramipril were given. Rivaroxaban was also given because atrial tachycardia could cause left atrial thrombosis and embolism. His atrial tachycardia converted spontaneously to normal sinus rhythm after these treatments. Since the patient had severe right ventricular dysfunction, frequent premature ventricular beats and non-sustained ventricular tachycardia on Holter monitoring, indicating a high risk of sudden death, implantable cardioverter defibrillator (ICD) was implanted. After discharge from hospital, physical activity restriction and the above medicines were continued. As rapid atrial arrhythmia could lead to inappropriate ICD shocks, amiodarone was added to prevent the recurrence of atrial tachycardia, and also control ventricular arrhythmia. After 6 months, echocardiography was repeated and showed that the left ventricle diameter was reduced significantly, and the left ventricular ejection fraction increased to 60%, while the size of right ventricle and right atrium decreased slightly. According to the clinical manifestations and outcomes, he was diagnosed with ARVC associated with arrhythmia induced cardiomyopathy. According to the results of his cardiac magnetic resonance imaging, the patient had left ventricular involvement caused by ARVC, and the persistent atrial tachycardia led to left ventricular systolic dysfunction.
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Affiliation(s)
- 少敏 陈
- />北京大学第三医院心内科、血管医学研究所,国家卫生健康委心血管分子生物学与调节肽重点实验室,分子心血管学教育部重点实验室,心血管受体研究北京市重点实验室,北京 100191Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - 超 孙
- />北京大学第三医院心内科、血管医学研究所,国家卫生健康委心血管分子生物学与调节肽重点实验室,分子心血管学教育部重点实验室,心血管受体研究北京市重点实验室,北京 100191Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - 新宇 王
- />北京大学第三医院心内科、血管医学研究所,国家卫生健康委心血管分子生物学与调节肽重点实验室,分子心血管学教育部重点实验室,心血管受体研究北京市重点实验室,北京 100191Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - 媛 张
- />北京大学第三医院心内科、血管医学研究所,国家卫生健康委心血管分子生物学与调节肽重点实验室,分子心血管学教育部重点实验室,心血管受体研究北京市重点实验室,北京 100191Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - 书旺 刘
- />北京大学第三医院心内科、血管医学研究所,国家卫生健康委心血管分子生物学与调节肽重点实验室,分子心血管学教育部重点实验室,心血管受体研究北京市重点实验室,北京 100191Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital; Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
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4
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Baturova MA, Svensson A, Aneq MÅ, Svendsen JH, Risum N, Sherina V, Bundgaard H, Meurling C, Lundin C, Carlson J, Platonov PG. Evolution of P-wave indices during long-term follow-up as markers of atrial substrate progression in arrhythmogenic right ventricular cardiomyopathy. Europace 2021; 23:i29-i37. [PMID: 33751075 DOI: 10.1093/europace/euaa388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 12/04/2020] [Indexed: 11/14/2022] Open
Abstract
AIMS Patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) have increased prevalence of atrial arrhythmias indicating atrial involvement in the disease. We aimed to assess the long-term evolution of P-wave indices as electrocardiographic (ECG) markers of atrial substrate during ARVC progression. METHODS AND RESULTS We included 100 patients with a definite ARVC diagnosis according to 2010 Task Force criteria [34% females, median age 41 (inter-quartile range 30-55) years]. All available sinus rhythm ECGs (n = 1504) were extracted from the regional electronic ECG databases and automatically processed using Glasgow algorithm. P-wave duration, P-wave area, P-wave frontal axis, and prevalence of abnormal P terminal force in lead V1 (aPTF-V1) were assessed and compared at ARVC diagnosis, 10 years before and up to 15 years after diagnosis.Prior to ARVC diagnosis, none of the P-wave indices differed significantly from the data at ARVC diagnosis. After ascertainment of ARVC diagnosis, P-wave area in lead V1 decreased from -1 to -30 µV ms at 5 years (P = 0.002). P-wave area in lead V2 decreased from 82 µV ms at ARVC diagnosis to 42 µV ms 10 years after ARVC diagnosis (P = 0.006). The prevalence of aPTF-V1 increased from 5% at ARVC diagnosis to 18% by the 15th year of follow-up (P = 0.004). P-wave duration and frontal axis did not change during disease progression. CONCLUSION Initial ARVC progression was associated with P-wave flattening in right precordial leads and in later disease stages an increased prevalence of aPTF-V1 was seen.
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Affiliation(s)
- Maria A Baturova
- Department of Cardiology, Clinical Sciences, Lund University, SE-221 85 Lund, Sweden.,Research Park, Saint Petersburg State University, Saint Petersburg, Russia
| | - Anneli Svensson
- Department of Cardiology, Linköping University, Linköping, Sweden.,Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Meriam Åström Aneq
- Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.,Department of Clinical Physiology, Linköping University, Linköping, Sweden
| | - Jesper H Svendsen
- Department of Cardiology, Centre for Cardiac, Vascular, Pulmonary and Infectious Diseases, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Niels Risum
- Department of Cardiology, Centre for Cardiac, Vascular, Pulmonary and Infectious Diseases, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Valeriia Sherina
- Department of Biostatistics and Computational Biology, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA
| | - Henning Bundgaard
- Department of Cardiology, Centre for Cardiac, Vascular, Pulmonary and Infectious Diseases, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Carl Meurling
- Department of Cardiology, Clinical Sciences, Lund University, SE-221 85 Lund, Sweden
| | - Catarina Lundin
- Department of Clinical Genetics and Pathology, Division of Laboratory Medicine, Lund, Sweden
| | - Jonas Carlson
- Department of Cardiology, Clinical Sciences, Lund University, SE-221 85 Lund, Sweden
| | - Pyotr G Platonov
- Department of Cardiology, Clinical Sciences, Lund University, SE-221 85 Lund, Sweden
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5
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Cunningham SM, Dos Santos L. Arrhythmogenic right ventricular cardiomyopathy in dogs. J Vet Cardiol 2021; 40:156-169. [PMID: 34503916 DOI: 10.1016/j.jvc.2021.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 06/29/2021] [Accepted: 07/08/2021] [Indexed: 11/19/2022]
Abstract
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited myocardial disease seen in dogs, cats, and humans. A common entity in Boxers and the related English bulldog, the disease is characterized by fatty or fibrofatty replacement of the myocardium, ventricular arrhythmias, and the potential for syncope or sudden death. In some individuals, concomitant left ventricular involvement results in systolic dysfunction and a progression to congestive heart failure. The clinical and pathological characteristics of ARVC share many similarities in dogs and humans, and Boxers serve as an important spontaneous model of the disease. Although multiple mechanisms have been implicated in the pathogenesis of ARVC, the disease is ultimately considered to be a disorder of the desmosome. Multiple causal genetic mutations have been identified in people, and over 50% of affected humans have an identifiable mutation in desmosomal proteins. To date, only a single genetic mutation has been associated with ARVC in Boxer dogs. Other as-yet-undiscovered genetic mutations and epigenetic modifiers of the disease are likely. Treatment of ARVC in dogs is focused on controlling ventricular arrhythmias and associated clinical signs. This article will review the pathophysiology, clinical diagnosis, treatment, and prognosis of ARVC in the dog.
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Affiliation(s)
- S M Cunningham
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, 200 Westboro Road, North Grafton, 01536, MA, USA.
| | - L Dos Santos
- Department of Clinical Sciences, Cummings School of Veterinary Medicine at Tufts University, 200 Westboro Road, North Grafton, 01536, MA, USA
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Transvenous implantable cardioverter-defibrillator implantation in a patient with arrhythmogenic cardiomyopathy and massive right atrial thrombus. HeartRhythm Case Rep 2020; 6:951-954. [PMID: 33365247 PMCID: PMC7749201 DOI: 10.1016/j.hrcr.2020.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Pedro B, Fontes-Sousa AP, Gelzer AR. Canine atrial fibrillation: Pathophysiology, epidemiology and classification. Vet J 2020; 265:105548. [PMID: 33129553 DOI: 10.1016/j.tvjl.2020.105548] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 12/14/2022]
Abstract
Atrial fibrillation (AF) is the most common non-physiological arrhythmia in dogs and humans. Its high prevalence in both species and the impact it has on survival time and quality of life of affected patients, makes it a very relevant topic of medical research. Significant developments in understanding the mechanisms underlying this arrhythmia in humans has occurred over the last decades and some of this knowledge is being applied to veterinary medicine, despite the many differences between species. This article reviews the current understanding of the pathophysiology of AF. The epidemiology and classification of AF in dogs will also be discussed.
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Affiliation(s)
- Brigite Pedro
- Willows Veterinary Centre and Referral Service, Highlands Road, Solihull, West Midlands B90 4NH, UK.
| | - Ana Patrícia Fontes-Sousa
- Laboratório de Farmacologia e Neurobiologia, Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal
| | - Anna R Gelzer
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Ribitsch I, Baptista PM, Lange-Consiglio A, Melotti L, Patruno M, Jenner F, Schnabl-Feichter E, Dutton LC, Connolly DJ, van Steenbeek FG, Dudhia J, Penning LC. Large Animal Models in Regenerative Medicine and Tissue Engineering: To Do or Not to Do. Front Bioeng Biotechnol 2020; 8:972. [PMID: 32903631 PMCID: PMC7438731 DOI: 10.3389/fbioe.2020.00972] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 07/27/2020] [Indexed: 12/13/2022] Open
Abstract
Rapid developments in Regenerative Medicine and Tissue Engineering has witnessed an increasing drive toward clinical translation of breakthrough technologies. However, the progression of promising preclinical data to achieve successful clinical market authorisation remains a bottleneck. One hurdle for progress to the clinic is the transition from small animal research to advanced preclinical studies in large animals to test safety and efficacy of products. Notwithstanding this, to draw meaningful and reliable conclusions from animal experiments it is critical that the species and disease model of choice is relevant to answer the research question as well as the clinical problem. Selecting the most appropriate animal model requires in-depth knowledge of specific species and breeds to ascertain the adequacy of the model and outcome measures that closely mirror the clinical situation. Traditional reductionist approaches in animal experiments, which often do not sufficiently reflect the studied disease, are still the norm and can result in a disconnect in outcomes observed between animal studies and clinical trials. To address these concerns a reconsideration in approach will be required. This should include a stepwise approach using in vitro and ex vivo experiments as well as in silico modeling to minimize the need for in vivo studies for screening and early development studies, followed by large animal models which more closely resemble human disease. Naturally occurring, or spontaneous diseases in large animals remain a largely untapped resource, and given the similarities in pathophysiology to humans they not only allow for studying new treatment strategies but also disease etiology and prevention. Naturally occurring disease models, particularly for longer lived large animal species, allow for studying disorders at an age when the disease is most prevalent. As these diseases are usually also a concern in the chosen veterinary species they would be beneficiaries of newly developed therapies. Improved awareness of the progress in animal models is mutually beneficial for animals, researchers, human and veterinary patients. In this overview we describe advantages and disadvantages of various animal models including domesticated and companion animals used in regenerative medicine and tissue engineering to provide an informed choice of disease-relevant animal models.
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Affiliation(s)
- Iris Ribitsch
- Veterm, Department for Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Pedro M. Baptista
- Laboratory of Organ Bioengineering and Regenerative Medicine, Health Research Institute of Aragon (IIS Aragon), Zaragoza, Spain
| | - Anna Lange-Consiglio
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Luca Melotti
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Marco Patruno
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Florien Jenner
- Veterm, Department for Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Eva Schnabl-Feichter
- Clinical Unit of Small Animal Surgery, Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Luke C. Dutton
- Department of Clinical Sciences and Services, Royal Veterinary College, Hertfordshire, United Kingdom
| | - David J. Connolly
- Clinical Unit of Small Animal Surgery, Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Frank G. van Steenbeek
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Jayesh Dudhia
- Department of Clinical Sciences and Services, Royal Veterinary College, Hertfordshire, United Kingdom
| | - Louis C. Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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9
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Baturova MA, Haugaa KH, Jensen HK, Svensson A, Gilljam T, Bundgaard H, Madsen T, Hansen J, Chivulescu M, Christiansen MK, Carlson J, Edvardsen T, Svendsen JH, Platonov PG. Atrial fibrillation as a clinical characteristic of arrhythmogenic right ventricular cardiomyopathy: Experience from the Nordic ARVC Registry. Int J Cardiol 2020; 298:39-43. [DOI: 10.1016/j.ijcard.2019.07.086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/15/2019] [Accepted: 07/29/2019] [Indexed: 10/26/2022]
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10
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Li G, Fontaine GH, Fan S, Yan Y, Bode PK, Duru F, Frank R, Saguner AM. Right atrial pathology in arrhythmogenic right ventricular dysplasia. Cardiol J 2018; 26:736-743. [PMID: 30394508 DOI: 10.5603/cj.a2018.0123] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/11/2018] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Atrial fibrillation (AF) is the most common atrial arrhythmia in arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVD). Considering the histologic changes known in the right ventricular (RV) in ARVD, the aim of the present study was to examine right atrial (RA) pathology in patients with ARVD. METHODS Histology of RA and RV was assessed from autopsy material in 3 patients with ARVD without persistent atrial arrhythmia. RA histology in 3 patients with permanent AF without ARVD and 5 patients without cardiovascular disease was also studied. Staining with hematoxylin phloxine saffron was performed for the ARVD patients to identify fibrosis, and hematoxylin-eosin for identification of lymphocytes. Masson's trichrome staining was performed for control groups taken from a collection of standard glass slides. RESULTS In all 3 ARVD cases, RA anomalies were observed that revealed a reduction of cardiomyocytes, the presence of adipocytes, some of them inside the mediomural atrial layer and interstitial fibrosis. In 2 ARVD cases, interstitial fibrosis was also associated with a focus of replacement fibrosis, which was also observed in patients with permanent AF without ARVD. The histologic specimen of the RA and RV from the control group without cardiovascular disease did not display any evidence of fat or fibrosis with a preserved cardiomyocyte architecture. CONCLUSIONS A similar histopathological substrate, as can be observed in the RV of patients with ARVD can also be seen in the RA of these patients. This may explain the high prevalence of atrial arrhythmias, particularly AF, in patients with ARVD.
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Affiliation(s)
- Guoliang Li
- Cardiology Institute, Rhythmology Unit, Hôpital Universitaire La Pitié-Salpêtrière, Paris, France.
| | - Guy H Fontaine
- Cardiology Institute, Rhythmology Unit, Hôpital Universitaire La Pitié-Salpêtrière, Paris, France
| | | | | | - Peter K Bode
- Institute of Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Firat Duru
- Department of Cardiology, University Heart Center, Zurich, Switzerland
| | - Robert Frank
- Cardiology Institute, Rhythmology Unit, Hôpital Universitaire La Pitié-Salpêtrière, Paris, France
| | - Ardan M Saguner
- Department of Cardiology, University Heart Center, Zurich, Switzerland
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11
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McAulay G, Borgeat K, Sargent J, Mõtsküla P, Neves J, Dukes-McEwan J, Luis Fuentes V. Phenotypic description of cardiac findings in a population of Dogue de Bordeaux with an emphasis on atrial fibrillation. Vet J 2018; 234:111-118. [PMID: 29680382 DOI: 10.1016/j.tvjl.2018.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 02/20/2018] [Accepted: 02/21/2018] [Indexed: 10/17/2022]
Abstract
The aim of this study was to describe the clinical phenotype of Dogue de Bordeaux (DdB) referred for cardiac investigation, with particular reference to the prevalence of atrial fibrillation and associated features. Review of canine medical records of two United Kingdom veterinary referral hospitals identified 64 DdB with available echocardiographic and electrocardiographic (ECG)/Holter data. Atrial fibrillation was documented in 25 (39%) dogs and supraventricular tachycardia was recorded in five (7.8%) dogs. In a subset of 34 dogs, excluding congenital heart disease (n=17), presence of a cardiac mass (n=7) and non-cardiac neoplasia (n=6), 19 (56%) dogs had atrial fibrillation, with a median heart rate of 200 beats per min (bpm) on presentation. Atrial fibrillation was inconsistently associated with cardiac chamber remodelling, but was frequently associated with systolic dysfunction (13/19, 68.4%) and right sided atrial or ventricular dilatation (14/19, 73.7%) in dogs with atrial fibrillation in this subset. No dogs in this subset had right sided atrial or ventricular dilatation in the absence of supraventricular arrhythmia or systolic dysfunction. The absence of structural heart disease in some dogs with supraventricular arrhythmias suggests that an underlying primary arrhythmic process might be responsible for initiating remodelling, although a primary cardiomyopathy cannot be ruled out.
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Affiliation(s)
- G McAulay
- Cardio-respiratory Referrals, New Priory Vets Brighton, BN1 8QR, UK.
| | - K Borgeat
- Royal Veterinary College, Department of Clinical Science and Services, Hatfield AL9 7TA, UK
| | - J Sargent
- Royal Veterinary College, Department of Clinical Science and Services, Hatfield AL9 7TA, UK
| | - P Mõtsküla
- Royal Veterinary College, Department of Clinical Science and Services, Hatfield AL9 7TA, UK
| | - J Neves
- Small Animal Teaching Hospital, Institute of Veterinary Science, University of Liverpool, Chester High Road, Neston CH64 7TE, UK
| | - J Dukes-McEwan
- Small Animal Teaching Hospital, Institute of Veterinary Science, University of Liverpool, Chester High Road, Neston CH64 7TE, UK
| | - V Luis Fuentes
- Royal Veterinary College, Department of Clinical Science and Services, Hatfield AL9 7TA, UK
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12
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Klein C, Souissi Z, Brigadeau F, Lacroix D. Arrhythmogenic right ventricular cardiomyopathy and left atrial tachycardia: a case report. EUROPEAN HEART JOURNAL-CASE REPORTS 2017; 1:ytx012. [PMID: 31020070 PMCID: PMC6177015 DOI: 10.1093/ehjcr/ytx012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 11/05/2017] [Indexed: 11/23/2022]
Abstract
Little is known about atrial arrhythmias in arrhythmogenic right ventricular cardiomyopathy (ARVC). A 46-year-old man with definite ARVC presented with palpitations and exertional dyspnoea. Electrocardiogram showed a supraventricular tachycardia. Despite no prior cardiac surgery or atrial fibrillation ablation, electrophysiological study revealed a left atrial (LA) re-entrant circuit characterized by a slow fractionated potential bounded by two areas of double potentials giving a figure-of-eight pattern on activation map. Located on the LA roof within a zone of low bipolar voltages, this unusual substrate can be associated with a primitive atrial myopathy in ARVC.
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Affiliation(s)
- Cedric Klein
- Department of Cardiovascular Medicine, University of Lille CHU Lille, F-59000 Lille, France
| | - Zouheir Souissi
- Department of Cardiovascular Medicine, University of Lille CHU Lille, F-59000 Lille, France
| | - François Brigadeau
- Department of Cardiovascular Medicine, University of Lille CHU Lille, F-59000 Lille, France
| | - Dominique Lacroix
- Department of Cardiovascular Medicine, University of Lille CHU Lille, F-59000 Lille, France
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13
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Dutton LC, Church SAV, Hodgkiss-Geere H, Catchpole B, Huggins A, Dudhia J, Connolly DJ. Cryopreservation of canine cardiosphere-derived cells: Implications for clinical application. Cytometry A 2017; 93:115-124. [PMID: 28834400 DOI: 10.1002/cyto.a.23186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/27/2017] [Accepted: 07/18/2017] [Indexed: 12/12/2022]
Abstract
The clinical application of cardiosphere-derived cells (CDCs) to treat cardiac disease has gained increasing interest over the past decade. Recent clinical trials confirm their regenerative capabilities, although much remains to be elucidated about their basic biology. To develop this new treatment modality, in a cost effective and standardized workflow, necessitates the creation of cryopreserved cell lines to facilitate access for cardiac patients requiring urgent therapy. Cryopreservation may however lead to alterations in cell behavior and potency. The aim of this study was to investigate the effect of cryopreservation on canine CDCs. CDCs and mesenchymal stem cells (MSCs) isolated from five dogs were characterized. CDCs demonstrated a population doubling time that was unchanged by cryopreservation (fresh vs. cryopreserved; 57.13 ± 5.27 h vs. 48.94 ± 9.55 h, P = 0.71). This was slower than for MSCs (30.46 h, P < 0.05). The ability to form clones, self-renew, and commit to multiple lineages was unaffected by cryopreservation. Cryopreserved CDCs formed larger cardiospheres compared to fresh cells (P < 0.0001). Fresh CDCs showed a high proportion of CD105+ (89.0% ± 4.98) and CD44+ (99.68% ± 0.13) cells with varying proportions of CD90+ (23.36% ± 9.78), CD34+ (7.18% ± 4.03) and c-Kit+ (13.17% ± 8.67) cells. CD45+ (0.015% ± 0.005) and CD29+ (2.92% ± 2.46) populations were negligible. Increasing passage number of fresh CDCs correlated with an increase in the proportion of CD34+ and a decrease in CD90+ cells (P = 0.003 and 0.03, respectively). Cryopreserved CDCs displayed increased CD34+ (P < 0.001) and decreased CD90+ cells (P = 0.042) when compared to fresh cells. Overall, our study shows that cryopreservation of canine CDCs is feasible without altering their stem characteristics, thereby facilitating their utilization for clinical trials. © 2017 International Society for Advancement of Cytometry.
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Affiliation(s)
- Luke C Dutton
- Department of Clinical Science and Services, Royal Veterinary College, University of London, London, UK
| | - Sophie A V Church
- Department of Clinical Science and Services, Royal Veterinary College, University of London, London, UK
| | | | - Brian Catchpole
- Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, London, UK
| | - Anthony Huggins
- Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, London, UK
| | - Jayesh Dudhia
- Department of Clinical Science and Services, Royal Veterinary College, University of London, London, UK
| | - David J Connolly
- Department of Clinical Science and Services, Royal Veterinary College, University of London, London, UK
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