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Vaage AM, Meyer HE, Landgraff IK, Myrstad M, Holmøy T, Nakken O. Physical Activity, Fitness, and Long-Term Risk of Amyotrophic Lateral Sclerosis: A Prospective Cohort Study. Neurology 2024; 103:e209575. [PMID: 38924713 DOI: 10.1212/wnl.0000000000209575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Observational studies have demonstrated an increased amyotrophic lateral sclerosis (ALS) risk among professional athletes in various sports. For moderately increased levels of physical activity and fitness, the results are diverging. Through a cohort study, we aimed to assess the relationship between indicators of physical activity and fitness (self-reported physical activity and resting heart rate) and long-term ALS risk. METHODS From a large Norwegian cardiovascular health survey (1985-1999), we collected information on self-reported physical activity in leisure time, resting heart rate, and other cardiovascular risk factors. Patients with ALS were identified through health registries covering the whole population. We fitted Cox proportional hazard models to assess the risk of ALS according to levels of self-reported physical activity in 3 categories (1: sedentary; 2: minimum 4 hours per week of walking or cycling; 3: minimum 4 hours per week of recreational sports or hard training), and resting heart rate modeled both on the continuous scale and as quartiles of distribution. RESULTS Out of 373,696 study participants (mean 40.9 [SD 1.1] years at inclusion), 504 (41.2% women) developed ALS during a mean follow-up time of 27.2 (SD 5.0) years. Compared with participants with the lowest level of physical activity, the hazard ratio was 0.71 (95% CI 0.53-0.95) for those with the highest level. There were no clear associations between resting heart rate and ALS in the total sample. In men, the hazard ratio of ALS was 0.71 (95% CI 0.53-0.95) for those reporting moderate levels of physical activity and 0.59 (95% CI 0.42-0.84) for those reporting high levels, compared with those reporting low levels. Men with resting heart rate in the lowest quartile had 32% reduced risk of ALS (hazard ratio 0.68, 95% CI 0.49-0.94) compared with those in the second highest quartile. In women, no association was detected between neither self-reported levels of physical activity nor resting heart rate and ALS risk. DISCUSSION Indicators of high levels of physical activity and fitness are associated with a reduced risk of ALS more than 30 years later in men, but not in women.
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Affiliation(s)
- Anders M Vaage
- From the Department of Neurology (A.M.V., T.H., O.N.), Akershus University Hospital, Lørenskog; Institute of Clinical Medicine (A.M.V., T.H.), University of Oslo; Department of Physical Health and Ageing (H.E.M.), Norwegian Institute of Public Health, Oslo; Department of Community Medicine and Global Health (H.E.M.), University of Oslo; and Department of Internal Medicine (I.K.L., M.M.), and Department of Medical Research (M.M.), Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway
| | - Haakon E Meyer
- From the Department of Neurology (A.M.V., T.H., O.N.), Akershus University Hospital, Lørenskog; Institute of Clinical Medicine (A.M.V., T.H.), University of Oslo; Department of Physical Health and Ageing (H.E.M.), Norwegian Institute of Public Health, Oslo; Department of Community Medicine and Global Health (H.E.M.), University of Oslo; and Department of Internal Medicine (I.K.L., M.M.), and Department of Medical Research (M.M.), Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway
| | - Ida K Landgraff
- From the Department of Neurology (A.M.V., T.H., O.N.), Akershus University Hospital, Lørenskog; Institute of Clinical Medicine (A.M.V., T.H.), University of Oslo; Department of Physical Health and Ageing (H.E.M.), Norwegian Institute of Public Health, Oslo; Department of Community Medicine and Global Health (H.E.M.), University of Oslo; and Department of Internal Medicine (I.K.L., M.M.), and Department of Medical Research (M.M.), Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway
| | - Marius Myrstad
- From the Department of Neurology (A.M.V., T.H., O.N.), Akershus University Hospital, Lørenskog; Institute of Clinical Medicine (A.M.V., T.H.), University of Oslo; Department of Physical Health and Ageing (H.E.M.), Norwegian Institute of Public Health, Oslo; Department of Community Medicine and Global Health (H.E.M.), University of Oslo; and Department of Internal Medicine (I.K.L., M.M.), and Department of Medical Research (M.M.), Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway
| | - Trygve Holmøy
- From the Department of Neurology (A.M.V., T.H., O.N.), Akershus University Hospital, Lørenskog; Institute of Clinical Medicine (A.M.V., T.H.), University of Oslo; Department of Physical Health and Ageing (H.E.M.), Norwegian Institute of Public Health, Oslo; Department of Community Medicine and Global Health (H.E.M.), University of Oslo; and Department of Internal Medicine (I.K.L., M.M.), and Department of Medical Research (M.M.), Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway
| | - Ola Nakken
- From the Department of Neurology (A.M.V., T.H., O.N.), Akershus University Hospital, Lørenskog; Institute of Clinical Medicine (A.M.V., T.H.), University of Oslo; Department of Physical Health and Ageing (H.E.M.), Norwegian Institute of Public Health, Oslo; Department of Community Medicine and Global Health (H.E.M.), University of Oslo; and Department of Internal Medicine (I.K.L., M.M.), and Department of Medical Research (M.M.), Bærum Hospital, Vestre Viken Hospital Trust, Gjettum, Norway
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Marchand M, Erickson AC, Gillman L, Haywood R, Morrison J, Jaworsky D, Drouin O, Laksman Z, Krahn AD, Arbour L. The Impact of Chronic Disease on the Corrected QT (QTc) Value in Women in a British Columbia First Nations Population. Can J Cardiol 2024; 40:89-97. [PMID: 37852605 DOI: 10.1016/j.cjca.2023.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 09/27/2023] [Accepted: 10/12/2023] [Indexed: 10/20/2023] Open
Abstract
BACKGROUND Indigenous women have higher rates of chronic disease than Indigenous men and non-Indigenous women. Long QT syndrome (LQTS) can be inherited or acquired; the latter may occur with chronic disease. A prolonged corrected QT value (QTc) is an independent risk factor for ventricular arrhythmias and sudden death, but few studies have quantified the impact of chronic disease on the QTc. We assessed the association between chronic disease and QTc prolongation in a population of First Nations women previously ascertained to study a high rate of inherited LQTS due to a unique genetic (founder) variant in their community. METHODS This substudy focusing on women expands on the original research where patients with clinical features of LQTS and their relatives were assessed for genetic variants discovered to affect the QTc. Medical records were retrospectively reviewed and chronic diseases documented. Using multivariate linear regression, adjusting for the effect of genetic variants, age, and QTc-prolonging medications, we evaluated the association between chronic disease and the QTc. RESULTS In total, 275 women were included. After adjustments, a prolonged QTc was associated with coronary artery disease (26.5 ms, 95% confidence interval [CI] 9.0-44.1 ms; P = 0.003), conduction system disease (26.8 ms, 95% CI 2.2-51.4 ms; P = 0.033), rheumatoid arthritis (28.9 ms, 95% CI 12.7-45.1 ms; P = 0.001), and type 2 diabetes mellitus (17.9 ms, 95% CI 3.6-32.3 ms; P = 0.015). CONCLUSIONS This quantification of the association between chronic disease and QTc prolongation in an Indigenous cohort provides insight into the nongenetic determinants of QTc prolongation. Corroboration in other populations will provide evidence for generalisability of these results.
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Affiliation(s)
- Miles Marchand
- Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada; Syilx Okanagan Nation, British Columbia, Canada
| | - Anders C Erickson
- Population and Public Health Division, British Columbia Ministry of Health, Victoria, British Columbia, Canada(‡)
| | - Lawrence Gillman
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada; Community Genetics Research Program, University of British Columbia, Island Medical Program, Victoria, British Columbia, Canada
| | - Rachel Haywood
- Community Genetics Research Program, University of British Columbia, Island Medical Program, Victoria, British Columbia, Canada
| | - Julie Morrison
- Community Member, Gitxsan Nation, British Columbia, Canada
| | - Denise Jaworsky
- Northern Health Authority, Terrace, British Columbia, Canada; Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Olivier Drouin
- Northern Health Authority, Terrace, British Columbia, Canada
| | - Zachary Laksman
- Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada; Centre for Cardiovascular Innovation, Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Andrew D Krahn
- Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada; Centre for Cardiovascular Innovation, Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Laura Arbour
- Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada; Community Genetics Research Program, University of British Columbia, Island Medical Program, Victoria, British Columbia, Canada.
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Llopis-Lorente J, Baroudi S, Koloskoff K, Mora MT, Basset M, Romero L, Benito S, Dayan F, Saiz J, Trenor B. Combining pharmacokinetic and electrophysiological models for early prediction of drug-induced arrhythmogenicity. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2023; 242:107860. [PMID: 37844488 DOI: 10.1016/j.cmpb.2023.107860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/28/2023] [Accepted: 10/10/2023] [Indexed: 10/18/2023]
Abstract
BACKGROUND AND OBJECTIVE In silico methods are gaining attention for predicting drug-induced Torsade de Pointes (TdP) in different stages of drug development. However, many computational models tended not to account for inter-individual response variability due to demographic covariates, such as sex, or physiologic covariates, such as renal function, which may be crucial when predicting TdP. This study aims to compare the effects of drugs in male and female populations with normal and impaired renal function using in silico methods. METHODS Pharmacokinetic models considering sex and renal function as covariates were implemented from data published in pharmacokinetic studies. Drug effects were simulated using an electrophysiologically calibrated population of cellular models of 300 males and 300 females. The population of models was built by modifying the endocardial action potential model published by O'Hara et al. (2011) according to the experimentally measured gene expression levels of 12 ion channels. RESULTS Fifteen pharmacokinetic models for CiPA drugs were implemented and validated in this study. Eight pharmacokinetic models included the effect of renal function and four the effect of sex. The mean difference in action potential duration (APD) between male and female populations was 24.9 ms (p<0.05). Our simulations indicated that women with impaired renal function were particularly susceptible to drug-induced arrhythmias, whereas healthy men were less prone to TdP. Differences between patient groups were more pronounced for high TdP-risk drugs. The proposed in silico tool also revealed that individuals with impaired renal function, electrophysiologically simulated with hyperkalemia (extracellular potassium concentration [K+]o = 7 mM) exhibited less pronounced APD prolongation than individuals with normal potassium levels. The pharmacokinetic/electrophysiological framework was used to determine the maximum safe dose of dofetilide in different patient groups. As a proof of concept, 3D simulations were also run for dofetilide obtaining QT prolongation in accordance with previously reported clinical values. CONCLUSIONS This study presents a novel methodology that combines pharmacokinetic and electrophysiological models to incorporate the effects of sex and renal function into in silico drug simulations and highlights their impact on TdP-risk assessment. Furthermore, it may also help inform maximum dose regimens that ensure TdP-related safety in a specific sub-population of patients.
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Affiliation(s)
- Jordi Llopis-Lorente
- Centro de Investigación e Innovación en Bioingeniería (Ci(2)B), Universitat Politècnica de València, camino de Vera, s/n, 46022, Valencia, Spain
| | | | | | - Maria Teresa Mora
- Centro de Investigación e Innovación en Bioingeniería (Ci(2)B), Universitat Politècnica de València, camino de Vera, s/n, 46022, Valencia, Spain
| | | | - Lucía Romero
- Centro de Investigación e Innovación en Bioingeniería (Ci(2)B), Universitat Politècnica de València, camino de Vera, s/n, 46022, Valencia, Spain
| | | | | | - Javier Saiz
- Centro de Investigación e Innovación en Bioingeniería (Ci(2)B), Universitat Politècnica de València, camino de Vera, s/n, 46022, Valencia, Spain
| | - Beatriz Trenor
- Centro de Investigación e Innovación en Bioingeniería (Ci(2)B), Universitat Politècnica de València, camino de Vera, s/n, 46022, Valencia, Spain.
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Emerson JI, Ariel P, Shi W, Conlon FL. Sex Differences in Mouse Cardiac Electrophysiology Revealed by Simultaneous Imaging of Excitation-Contraction Coupling. J Cardiovasc Dev Dis 2023; 10:479. [PMID: 38132647 PMCID: PMC10743987 DOI: 10.3390/jcdd10120479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
Males and females differ in the basic anatomy and physiology of the heart. Sex differences are evident in cardiac repolarization in humans; women have longer corrected QT and JT intervals. However, the molecular mechanisms that lead to these differences are incompletely understood. Here, we present that, like in humans, sex differences in QT and JT intervals exist in mouse models; female mice had longer corrected QT and JT intervals compared with age-matched males. To further understand the molecular underpinning of these sex differences, we developed a novel technology using fluorescent confocal microscopy that allows the simultaneous visualization of action potential, Ca2+ transients, and contractions in isolated cardiomyocytes at a high temporal resolution. From this approach, we uncovered that females at baseline have increased action potential duration, decreased Ca2+ release and reuptake rates, and decreased contraction and relaxation velocities compared with males. Additionally, males had a shorter overall time from action potential onset to peak contraction. In aggregate, our studies uncovered male and female differences in excitation-contraction coupling that account for differences observed in the EKG. Overall, a better understanding of sex differences in electrophysiology is essential for equitably treating cardiac disease.
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Affiliation(s)
- James I. Emerson
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
| | - Pablo Ariel
- Microscopy Services Laboratory, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
| | - Wei Shi
- Department of Biology and Genetics, McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
| | - Frank L. Conlon
- Department of Biology and Genetics, McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA;
- Integrative Program for Biological and Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Conlon FL, Arnold AP. Sex chromosome mechanisms in cardiac development and disease. NATURE CARDIOVASCULAR RESEARCH 2023; 2:340-350. [PMID: 37808586 PMCID: PMC10558115 DOI: 10.1038/s44161-023-00256-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 02/13/2023] [Indexed: 10/10/2023]
Abstract
Many human diseases, including cardiovascular disease, show differences between men and women in pathology and treatment outcomes. In the case of cardiac disease, sex differences are exemplified by differences in the frequency of specific types of congenital and adult-onset heart disease. Clinical studies have suggested that gonadal hormones are a factor in sex bias. However, recent research has shown that gene and protein networks under non-hormonal control also account for cardiac sex differences. In this review, we describe the sex chromosome pathways that lead to sex differences in the development and function of the heart and highlight how these findings affect future care and treatment of cardiac disease.
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Affiliation(s)
- Frank L Conlon
- Departments of Biology and Genetics, McAllister Heart Institute, UNC-Chapel Hill, Chapel Hill, NC 27599, USA
| | - Arthur P Arnold
- Department of Integrative Biology & Physiology, University of California, Los Angeles, CA, 90095, USA
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ÖZTÜRK D, ALTINBİLEK E, COŞKUN A. Evaluation of cases with early repolarization on electrocardiogram and normal population in terms of laboratory and clinical results. JOURNAL OF HEALTH SCIENCES AND MEDICINE 2023. [DOI: 10.32322/jhsm.1238355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023] Open
Abstract
Aim: Early repolarization (ER) is a frequent indication, and it is important to correctly evaluate the effects of its benign and malignant forms in terms of prognosis. It was aimed to compare ER cases with the normal population in terms of multi-vessel disease, bypass and mortality.
Material and Method: This study comprised 776 patients aged 18 and older who admitted the emergency department between January 2015 and December 2020. 377 of these patients had ER in the electrocardiogram (ECG), 409 patients had normal ECGs and were added to the study as the control group. Age, gender, multi-vessel disease, by-pass and mortality relations of the patients were evaluated with angiographic findings.
Results: The mean age of 786 patients was 50.49±6.82 years, 372 (47.3%) were female, and the age range was 23-66 years (p
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Affiliation(s)
- Derya ÖZTÜRK
- UNIVERSITY OF HEALTH SCIENCES, İSTANBUL ŞİŞLİ HAMİDİYE ETFAL HEALTH RESEARCH CENTER
| | - Ertuğrul ALTINBİLEK
- UNIVERSITY OF HEALTH SCIENCES, İSTANBUL ŞİŞLİ HAMİDİYE ETFAL HEALTH RESEARCH CENTER
| | - Abuzer COŞKUN
- UNIVERSITY OF HEALTH SCIENCES, İSTANBUL BAĞCILAR HEALTH RESEARCH CENTER
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Pauly V, Vlcek J, Zhang Z, Hesse N, Xia R, Bauer J, Loy S, Schneider S, Renner S, Wolf E, Kääb S, Schüttler D, Tomsits P, Clauss S. Effects of Sex on the Susceptibility for Atrial Fibrillation in Pigs with Ischemic Heart Failure. Cells 2023; 12:cells12070973. [PMID: 37048048 PMCID: PMC10093477 DOI: 10.3390/cells12070973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/16/2023] [Accepted: 03/21/2023] [Indexed: 04/14/2023] Open
Abstract
Atrial fibrillation (AF) is the most prevalent arrhythmia, often caused by myocardial ischemia/infarction (MI). Men have a 1.5× higher prevalence of AF, whereas women show a higher risk for new onset AF after MI. However, the underlying mechanisms of how sex affects AF pathophysiology are largely unknown. In 72 pigs with/without ischemic heart failure (IHF) we investigated the impact of sex on ischemia-induced proarrhythmic atrial remodeling and the susceptibility for AF. Electrocardiogram (ECG) and electrophysiological studies were conducted to assess electrical remodeling; histological analyses were performed to assess atrial fibrosis in male and female pigs. IHF pigs of both sexes showed a significantly increased vulnerability for AF, but in male pigs more and longer episodes were observed. Unchanged conduction properties but enhanced left atrial fibrosis indicated structural rather than electrical remodeling underlying AF susceptibility. Sex differences were only observed in controls with female pigs showing an increased intrinsic heart rate, a prolonged QRS interval and a prolonged sinus node recovery time. In sum, susceptibility for AF is significantly increased both in male and female pigs with ischemic heart failure. Differences between males and females are moderate, including more and longer AF episodes in male pigs and sinus node dysfunction in female pigs.
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Affiliation(s)
- Valerie Pauly
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Julia Vlcek
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Zhihao Zhang
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Nora Hesse
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Ruibing Xia
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Julia Bauer
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Simone Loy
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Sarah Schneider
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Simone Renner
- Interfaculty Center for Endocrine and Cardiovascular Disease Network Modelling and Clinical Transfer (ICONLMU), LMU Munich, Feodor-Lynen-Strasse 19, D-81377 Munich, Germany
- Chair for Molecular Animal Breeding and Biotechnology, Gene Center and Department of Veterinary Sciences, LMU Munich, Feodor-Lynen-Strasse 25, D-81377 Munich, Germany
- Center for Innovative Medical Models (CiMM), Department of Veterinary Sciences, LMU Munich, Hackerstrasse 27, D-85764 Oberschleissheim, Germany
- German Center for Diabetes Research (DZD), Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany
| | - Eckhard Wolf
- Interfaculty Center for Endocrine and Cardiovascular Disease Network Modelling and Clinical Transfer (ICONLMU), LMU Munich, Feodor-Lynen-Strasse 19, D-81377 Munich, Germany
- Chair for Molecular Animal Breeding and Biotechnology, Gene Center and Department of Veterinary Sciences, LMU Munich, Feodor-Lynen-Strasse 25, D-81377 Munich, Germany
- Center for Innovative Medical Models (CiMM), Department of Veterinary Sciences, LMU Munich, Hackerstrasse 27, D-85764 Oberschleissheim, Germany
- German Center for Diabetes Research (DZD), Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Grosshadern Campus, LMU Munich, Feodor-Lynen-Stasse 25, D-81377 Munich, Germany
| | - Stefan Kääb
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Interfaculty Center for Endocrine and Cardiovascular Disease Network Modelling and Clinical Transfer (ICONLMU), LMU Munich, Feodor-Lynen-Strasse 19, D-81377 Munich, Germany
| | - Dominik Schüttler
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Philipp Tomsits
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
| | - Sebastian Clauss
- Grosshadern Campus, Department of Medicine I, University Hospital Munich, Ludwig-Maximilians-University (LMU), Marchioninistrasse 15, D-81377 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich, Munich Heart Alliance, D-81377 Munich, Germany
- Institute of Surgical Research at the Walter-Brendel-Centre of Experimental Medicine, University Hospital Munich, LMU Munich, Marchioninistrasse 68, D-81377 Munich, Germany
- Interfaculty Center for Endocrine and Cardiovascular Disease Network Modelling and Clinical Transfer (ICONLMU), LMU Munich, Feodor-Lynen-Strasse 19, D-81377 Munich, Germany
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Fairweather D, Beetler DJ, Musigk N, Heidecker B, Lyle MA, Cooper LT, Bruno KA. Sex and gender differences in myocarditis and dilated cardiomyopathy: An update. Front Cardiovasc Med 2023; 10:1129348. [PMID: 36937911 PMCID: PMC10017519 DOI: 10.3389/fcvm.2023.1129348] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 02/06/2023] [Indexed: 03/06/2023] Open
Abstract
In the past decade there has been a growing interest in understanding sex and gender differences in myocarditis and dilated cardiomyopathy (DCM), and the purpose of this review is to provide an update on this topic including epidemiology, pathogenesis and clinical presentation, diagnosis and management. Recently, many clinical studies have been conducted examining sex differences in myocarditis. Studies consistently report that myocarditis occurs more often in men than women with a sex ratio ranging from 1:2-4 female to male. Studies reveal that DCM also has a sex ratio of around 1:3 women to men and this is also true for familial/genetic forms of DCM. Animal models have demonstrated that DCM develops after myocarditis in susceptible mouse strains and evidence exists for this progress clinically as well. A consistent finding is that myocarditis occurs primarily in men under 50 years of age, but in women after age 50 or post-menopause. In contrast, DCM typically occurs after age 50, although the age that post-myocarditis DCM occurs has not been investigated. In a small study, more men with myocarditis presented with symptoms of chest pain while women presented with dyspnea. Men with myocarditis have been found to have higher levels of heart failure biomarkers soluble ST2, creatine kinase, myoglobin and T helper 17-associated cytokines while women develop a better regulatory immune response. Studies of the pathogenesis of disease have found that Toll-like receptor (TLR)2 and TLR4 signaling pathways play a central role in increasing inflammation during myocarditis and in promoting remodeling and fibrosis that leads to DCM, and all of these pathways are elevated in males. Management of myocarditis follows heart failure guidelines and there are currently no disease-specific therapies. Research on standard heart failure medications reveal important sex differences. Overall, many advances in our understanding of the effect of biologic sex on myocarditis and DCM have occurred over the past decade, but many gaps in our understanding remain. A better understanding of sex and gender effects are needed to develop disease-targeted and individualized medicine approaches in the future.
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Affiliation(s)
- DeLisa Fairweather
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, United States
- Department of Environmental Health Sciences and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
- Center for Clinical and Translational Science, Mayo Clinic, Rochester, MN, United States
| | - Danielle J. Beetler
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, United States
- Center for Clinical and Translational Science, Mayo Clinic, Rochester, MN, United States
- Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Jacksonville, FL, United States
| | - Nicolas Musigk
- Department of Cardiology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Bettina Heidecker
- Department of Cardiology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Melissa A. Lyle
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, United States
| | - Leslie T. Cooper
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, United States
| | - Katelyn A. Bruno
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, United States
- Division of Cardiovascular Medicine, Department of Medicine, University of Florida, Gainesville, FL, United States
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9
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Ma J, Niklewski PJ, Wang HS. Acute exposure to low-dose bisphenol A delays cardiac repolarization in female canine heart - Implication for proarrhythmic toxicity in large animals. Food Chem Toxicol 2023; 172:113589. [PMID: 36584932 PMCID: PMC9852101 DOI: 10.1016/j.fct.2022.113589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/12/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022]
Abstract
Bisphenol A (BPA) is a common environmental chemical with a range of potential adverse health effects. The impact of environmentally-relevant low dose of BPA on the electrical properties of the hearts of large animals (e.g., dog, human) is poorly defined. Perturbation of cardiac electrical properties is a key arrhythmogenic mechanism. In particular, delay of ventricular repolarization and prolongation of the QT interval of the electrocardiogram is a marker for the risk of malignant arrhythmias. We examined the acute effect of 10-9 M BPA on the electrical properties of female canine ventricular myocytes and tissues. BPA rapidly delayed action potential repolarization and prolonged action potential duration (APD). The dose response curve of BPA on APD was nonmonotonic. BPA rapidly inhibited the IKr K+ current and ICaL Ca2+ current. Computational modeling indicated that the effect of BPA on APD can be accounted for by its suppression of IKr. At the tissue level, BPA acutely prolonged the QT interval in 4 left ventricular wedges. ERβ signaling contributed to the acute effects of BPA on ventricular repolarization. Our results demonstrate that BPA has QT prolongation liability in female canine hearts. These findings have implication for the potential proarrhythmic cardiac toxicity of BPA in large animals.
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Affiliation(s)
- Jianyong Ma
- Department of Pharmacology and Systems Physiology, University of Cincinnati, College of Medicine, Cincinnati, OH, USA
| | - Paul J Niklewski
- Department of Pharmacology and Systems Physiology, University of Cincinnati, College of Medicine, Cincinnati, OH, USA
| | - Hong-Sheng Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati, College of Medicine, Cincinnati, OH, USA.
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10
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Haq KT, Cooper BL, Berk F, Posnack NG. The effect of sex and age on ex vivo cardiac electrophysiology: insight from a guinea pig model. Am J Physiol Heart Circ Physiol 2023; 324:H141-H154. [PMID: 36487188 PMCID: PMC9829463 DOI: 10.1152/ajpheart.00497.2022] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 11/30/2022] [Accepted: 12/02/2022] [Indexed: 12/14/2022]
Abstract
Highlighting the importance of sex as a biological variable, we recently reported sex differences in guinea pig in vivo electrocardiogram (ECG) measurements. However, substantial inconsistencies exist in this animal model, with conflicting reports of sex-specific differences in cardiac electrophysiology observed in vivo and in vitro. Herein, we evaluated whether sexual dimorphism persists in ex vivo preparations, using an isolated intact heart preparation. Pseudo-ECG recordings were collected in conjunction with dual optical mapping of transmembrane voltage and intracellular calcium from Langendorff-perfused hearts. In contrast to our in vivo results, we did not observe sex-specific differences in ECG parameters collected from isolated hearts. Furthermore, we observed significant age-specific differences in action potential duration (APD) and Ca2+ transient duration (CaD) during both normal sinus rhythm (NSR) and in response to dynamic pacing but only a modest sex-specific difference in CaD30. Similarly, the alternans fluctuation coefficient, conduction velocity during sinus rhythm or in response to pacing, and electrophysiology parameters (atrioventricular nodal effective refractory period, Wenckebach cycle length) were comparable between males and females. Results of our study suggest that the observed sex-specific differences in in vivo ECG parameters from guinea pigs are diminished in ex vivo isolated heart preparations, although age-specific patterns are prevalent. To assess sex as a biological variable in cardiac electrophysiology, a comprehensive approach may be necessary using both in vitro measurements from cardiomyocyte or intact heart preparations with secondary follow-up in vivo studies.NEW & NOTEWORTHY We evaluated whether the guinea pig heart has intrinsic sex-specific differences in cardiac electrophysiology. Although we observed sex-specific differences in in vivo ECGs, these differences did not persist ex vivo. Using a whole heart model, we observed similar APD, CaD, conduction velocity, and alternans susceptibility in males and females. We conclude that sex-specific differences in guinea pig cardiac electrophysiology are likely influenced by the in vivo environment and less dependent on the intrinsic electrical properties of the heart.
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Affiliation(s)
- Kazi T Haq
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Hospital, Washington, District of Columbia
- Children's National Heart Institute, Children's National Hospital, Washington, District of Columbia
| | - Blake L Cooper
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Hospital, Washington, District of Columbia
- Children's National Heart Institute, Children's National Hospital, Washington, District of Columbia
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
| | - Fiona Berk
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Hospital, Washington, District of Columbia
- Children's National Heart Institute, Children's National Hospital, Washington, District of Columbia
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
- Department of Biomedical Engineering, The George Washington University, Washington, District of Columbia
| | - Nikki Gillum Posnack
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Hospital, Washington, District of Columbia
- Children's National Heart Institute, Children's National Hospital, Washington, District of Columbia
- Department of Pharmacology and Physiology, The George Washington University, Washington, District of Columbia
- Department of Pediatrics, The George Washington University, Washington, District of Columbia
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11
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Uchikawa M, Hashiguchi M, Shiga T. Drug-Induced QT Prolongation and Torsade de Pointes in Spontaneous Adverse Event Reporting: A Retrospective Analysis Using the Japanese Adverse Drug Event Report Database (2004-2021). Drugs Real World Outcomes 2022; 9:551-559. [PMID: 35994235 DOI: 10.1007/s40801-022-00328-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2022] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Drugs with new mechanisms of action are continually being developed, but it is difficult to capture whether a drug induces QT prolongation/torsade de pointes (TdP) in preclinical and preapproval clinical trials. OBJECTIVE To evaluate drugs associated with drug-induced QT prolongation/TdP using a real-world database in Japan. PATIENTS AND METHODS A search was performed in the Japanese Adverse Drug Event Report (JADER) database for QT prolongation and TdP. The reporting odds ratio (ROR) was calculated to identify potential drug-induced QT prolongation/TdP association. RESULTS Among the reported 4,326,484 data entries, 3410 patients exhibited QT prolongation/TdP (2707 with QT prolongation, 703 with TdP) with the suspected drugs. Of these patients, 53.9% were females. The highest occurrence was in the 70- to 79-year-old age group (24.7%). The most common types of drugs involved were cardiovascular drugs, central nervous system (CNS) drugs, anticancer drugs, and anti-infective drugs; the rate of overdose was reportedly very low at 1.6%. The highest adjusted RORs were observed for nifekalant (351.41, 95% confidence interval (CI) 235.85-523.59), followed by vandetanib (182.55, 95% CI 108.11-308.24), evocalcet (181.59, 95% CI 132.96-248.01), bepridil (160.37, 95% CI 138.17-186.13), diarsenic trioxide (79.43, 95% CI 63.98-98.62), and guanfacine (78.29, 95% CI 58.51-104.74). Among the drugs launched in Japan during the last decade, vandetanib had the highest adjusted RORs. CONCLUSIONS This study using the JADER database showed that antiarrhythmic drugs, calcium-sensing receptor agonists, small-molecule targeted anticancer drugs, and CNS drugs are associated with QT prolongation/TdP. Further pharmacoepidemiological studies, such as cohort studies using large databases, are needed to prove these causal relationships.
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Affiliation(s)
- Mayu Uchikawa
- The Jikei University School of Medicine, Tokyo, Japan
| | - Masayuki Hashiguchi
- Department of Clinical Pharmacology and Therapeutics, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Tsuyoshi Shiga
- Department of Clinical Pharmacology and Therapeutics, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan.
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12
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Villa Zapata L, Boyce RD, Chou E, Hansten PD, Horn JR, Gephart SM, Subbian V, Romero A, Malone DC. QTc Prolongation with the Use of Hydroxychloroquine and Concomitant Arrhythmogenic Medications: A Retrospective Study Using Electronic Health Records Data. Drugs Real World Outcomes 2022; 9:415-423. [PMID: 35665910 PMCID: PMC9167427 DOI: 10.1007/s40801-022-00307-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2022] [Indexed: 11/24/2022] Open
Abstract
Introduction Hydroxychloroquine can induce QT/QTc interval prolongation for some patients; however, little is known about its interactions with other QT-prolonging drugs. Objective The purpose of this retrospective electronic health records study was to evaluate changes in the QTc interval in patients taking hydroxychloroquine with or without concomitant QT-prolonging medications. Methods De-identified health records were obtained from the Cerner Health Facts® database. Variables of interest included demographics, diagnoses, clinical procedures, laboratory tests, and medications. Patients were categorized into six cohorts based on exposure to hydroxychloroquine, methotrexate, or sulfasalazine alone, or the combination of any those drugs with any concomitant drug known to prolong the QT interval. Tisdale QTc risk score was calculated for each patient cohort. Two-sample paired t-tests were used to test differences between the mean before and after QTc measurements within each group and ANOVA was used to test for significant differences across the cohort means. Results A statistically significant increase in QTc interval from the last measurement prior to concomitant exposure of 18.0 ms (95% CI 3.5–32.5; p < 0.05) was found in the hydroxychloroquine monotherapy cohort. QTc changes varied considerably across cohorts, with standard deviations ranging from 40.9 (hydroxychloroquine monotherapy) to 57.8 (hydroxychloroquine + sulfasalazine). There was no difference in QTc measurements among cohorts. The hydroxychloroquine + QTc-prolonging agent cohort had the highest average Tisdale Risk Score compared with those without concomitant exposure (p < 0.05). Conclusion Our analysis of retrospective electronic health records found hydroxychloroquine to be associated with a moderate increase in the QTc interval compared with sulfasalazine or methotrexate. However, the QTc was not significantly increased with concomitant exposure to other drugs known to increase QTc interval.
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Affiliation(s)
- Lorenzo Villa Zapata
- Department of Pharmacy Practice, College of Pharmacy, Mercer University, Atlanta, GA, USA
| | - Richard D Boyce
- Department of Biomedical Informatics, School of Medicine, University of Pittsburgh, The Offices@Baum, 5607 Baum Blvd, Pittsburgh, PA, 15202, USA.
| | - Eric Chou
- Department of Biomedical Informatics, School of Medicine, University of Pittsburgh, The Offices@Baum, 5607 Baum Blvd, Pittsburgh, PA, 15202, USA
| | | | - John R Horn
- Department of Pharmacy Practice, School of Pharmacy and Pharmacy Services UW Medicine, University of Washington, Seattle, WA, USA
| | - Sheila M Gephart
- Community and Health Systems Science, College of Nursing, The University of Arizona, Tucson, AZ, USA
| | - Vignesh Subbian
- Department of Biomedical Engineering and Department of Systems and Industrial Engineering, College of Engineering, The University of Arizona, Tucson, AZ, USA
| | - Andrew Romero
- Department of Pharmacy, Banner University Medical Center, Tucson, AZ, USA
| | - Daniel C Malone
- College of Pharmacy, L.S. Skaggs Research Institute, University of Utah, Salt Lake City, UT, USA
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13
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Svorc P, Svorc P. General anesthesia and electrocardiographic parameters in in vivo experiments involving rats. Physiol Res 2022; 71:177-192. [PMID: 35275702 PMCID: PMC9150551 DOI: 10.33549/physiolres.934848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/18/2022] [Indexed: 11/25/2022] Open
Abstract
In in vivo cardiovascular or toxicological studies involving rat models, changes in selected electrocardiographic (ECG) parameters are monitored after various interventions to assess the origin and development of heart rhythm disorders. Each ECG parameter has diagnostic significance; as such, commonly evaluated ECG parameters, including heart rate, PR interval, P wave duration, P wave amplitude, QRS complex, QT and QTc interval duration, R wave and T wave amplitude, of rats under various types of general anesthesia were the focus of this study. Studies that performed in vivo cardiovascular or toxicological experiments in rats were retrieved from a search of the Web of Science database for articles published mainly between 2000 and 2021. In total, the search retrieved 123 articles. ECG parameters that were reported as baseline or control values were summarized and averages with ranges were calculated. It is important to be cautious when interpreting results and, in discussions addressing the mechanisms underlying a given type of arrhythmia, acknowledge that initial ECG parameters may already be affected to some extent by the general anesthesia as well as by sex and the time of day the experiments were performed.
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Affiliation(s)
- Pavol Svorc
- Department of Physiology, Medical Faculty, Safarik University, Kosice, Slovak Republic
- Department of Physiology and Patophysiology, Medical Faculty, Ostrava University, Ostrava, Czech Republic
| | - Pavol Svorc
- Department of Physiology and Patophysiology, Medical Faculty, Ostrava University, Ostrava, Czech Republic
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14
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Martínez-Barrios E, Arbelo E, Cesar S, Cruzalegui J, Fiol V, Díez-Escuté N, Hernández C, Brugada R, Brugada J, Campuzano O, Sarquella-Brugada G. Brugada Syndrome in Women: What Do We Know After 30 Years? Front Cardiovasc Med 2022; 9:874992. [PMID: 35479286 PMCID: PMC9035527 DOI: 10.3389/fcvm.2022.874992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 03/17/2022] [Indexed: 11/17/2022] Open
Abstract
Brugada syndrome (BrS) was initially described in 1992 by Josep and Pedro Brugada as an arrhythmogenic disease characterized by ST segment elevation in the right precordial leads and increased risk of sudden cardiac death (SCD). Alterations in the SCN5A gene are responsible for approximately 30% of cases of BrS, following an autosomal dominant pattern of inheritance. However, despite its autosomal transmission, sex-related differences are widely accepted. BrS is more prevalent in males than in females (8–10 times), with males having a 5.5-fold higher risk of SCD. There are also differences in clinical presentation, with females being more frequently asymptomatic and older than males at the time of diagnosis. Some factors have been identified that could explain these differences, among which testosterone seems to play an important role. However, only 30% of the available publications on the syndrome include sex-related information. Therefore, current findings on BrS are based on studies conducted mainly in male population, despite the wide acceptance of gender differences. The inclusion of complete clinical and demographic information in future publications would allow a better understanding of the phenotypic variability of BrS in different age and sex groups helping to improve the diagnosis, management and risk management of SCD.
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Affiliation(s)
- Estefanía Martínez-Barrios
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- Institut d’Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Sergi Cesar
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - José Cruzalegui
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Victoria Fiol
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Nuria Díez-Escuté
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Clara Hernández
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Ramon Brugada
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
- Medical Science Department, School of Medicine, University of Girona, Girona, Spain
- Cardiovascular Genetics Center, University of Girona-Institut d’Investigacions Biomèdiques de Girona (IDIBGI), Girona, Spain
- Cardiology Service, Hospital Josep Trueta, University of Girona, Girona, Spain
| | - Josep Brugada
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- Institut d’Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Oscar Campuzano
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
- Medical Science Department, School of Medicine, University of Girona, Girona, Spain
- Cardiovascular Genetics Center, University of Girona-Institut d’Investigacions Biomèdiques de Girona (IDIBGI), Girona, Spain
- Oscar Campuzano,
| | - Georgia Sarquella-Brugada
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Medical Science Department, School of Medicine, University of Girona, Girona, Spain
- *Correspondence: Georgia Sarquella-Brugada,
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15
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St. Pierre SR, Peirlinck M, Kuhl E. Sex Matters: A Comprehensive Comparison of Female and Male Hearts. Front Physiol 2022; 13:831179. [PMID: 35392369 PMCID: PMC8980481 DOI: 10.3389/fphys.2022.831179] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/02/2022] [Indexed: 12/27/2022] Open
Abstract
Cardiovascular disease in women remains under-diagnosed and under-treated. Recent studies suggest that this is caused, at least in part, by the lack of sex-specific diagnostic criteria. While it is widely recognized that the female heart is smaller than the male heart, it has long been ignored that it also has a different microstructural architecture. This has severe implications on a multitude of cardiac parameters. Here, we systematically review and compare geometric, functional, and structural parameters of female and male hearts, both in the healthy population and in athletes. Our study finds that, compared to the male heart, the female heart has a larger ejection fraction and beats at a faster rate but generates a smaller cardiac output. It has a lower blood pressure but produces universally larger contractile strains. Critically, allometric scaling, e.g., by lean body mass, reduces but does not completely eliminate the sex differences between female and male hearts. Our results suggest that the sex differences in cardiac form and function are too complex to be ignored: the female heart is not just a small version of the male heart. When using similar diagnostic criteria for female and male hearts, cardiac disease in women is frequently overlooked by routine exams, and it is diagnosed later and with more severe symptoms than in men. Clearly, there is an urgent need to better understand the female heart and design sex-specific diagnostic criteria that will allow us to diagnose cardiac disease in women equally as early, robustly, and reliably as in men. Systematic Review Registration https://livingmatter.stanford.edu/.
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Affiliation(s)
- Sarah R. St. Pierre
- Department of Mechanical Engineering, Stanford University, Stanford, CA, United States
| | - Mathias Peirlinck
- Department of Mechanical Engineering, Stanford University, Stanford, CA, United States
- Department of Biomechanical Engineering, Delft University of Technology, Delft, Netherlands
- Department of Biomedical Engineering, Erasmus MC, Rotterdam, Netherlands
| | - Ellen Kuhl
- Department of Mechanical Engineering, Stanford University, Stanford, CA, United States
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16
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A descriptive report on short QT interval in Kherameh branch of the PERSIAN cohort study. Sci Rep 2022; 12:2898. [PMID: 35190598 PMCID: PMC8861052 DOI: 10.1038/s41598-022-06835-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 02/07/2022] [Indexed: 11/24/2022] Open
Abstract
Short QT-interval is a condition that bear the suspicion of short QT syndrome (SQTS). SQTS is known to increase risk of life-threatening arrythmias and sudden cardiac death (SCD). Due to the insufficient population-based studies and use of various QT cut-off values, it accounts for as an undiagnosed condition. In this study, we sought for prevalence of short QT interval in Kherameh cohort study, one of the southern branches of the Prospective Epidemiological Research Studies in Iran (PERSIAN). Data of 4363 adult subjects were analyzed from phase 1 of the cohort during 2014–2017. The corrected QT (QTc) intervals were calculated and electrocardiograms (ECGs) with QTc of less than 370 ms (msec) were reanalyzed for bradycardia, early repolarization, atrial fibrillation (AF), arrhythmias, and other electrical conduction abnormalities. Seventy-two subjects (1.65%) had a QTc of less than 370 ms (mean QTc of 360.72 ± 11.72). A male predominance and a lower mean heart rate observed in SQTS susceptible group (M/F of 1/0.26 vs. 1/1.145, p-value < 0.0001; 58.389 ± 9.787 vs. 70.899 ± 11.775; p-value < 0.0001) compare to the subjects with normal QTc. At least, 2 subjects with high-probability SQTS and 3 with intermediate-probability SQTS identified. The frequency of AF, syncope, bradycardia, early repolarization, low voltage ECG, and infantile SCD in first- and second-degree relatives were 16.67, 4.17, 33.33, 11.11, 11.11, 11.11%, respectively. The prevalence of short QT interval in our cohort was in line with previous studies. The incidence of cardiac symptoms/events, familial SCDs and ECG derived specific findings were high amongst SQTS-susceptible index persons. However, these variables could not predict the symptomatic subjects, which emphasizes gene studies and family screening.
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17
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Ibisoglu E, Boyraz B. Comparison of ventricular repolarization parameters of Covid-19 patients diagnosed with chest CT and RT-PCR. Acta Cardiol 2021; 76:1013-1018. [PMID: 34254875 DOI: 10.1080/00015385.2021.1950366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND AND OBJECTIVES The aim of the comparison is to evaluate the marker of ventricular repolarization parameters such as QT, QTc, cQT, Tp-e, Tp-e/QT, Tp-e/QTc, Tp-e/JT and Tp-e/JTc ratios and the risk of ventricular arrhtythmias in patients with newly diagnosed Covid-19. METHODS The study included 2 separate groups. The first one consisted of 96 positive reverse transcriptase polymerase chain reaction (RT-PCR) Covid-19 patients and the second one of 106 patients with negative PCR but positive chest computed tomography (CT) findings consistent with Covid-19. We measured QTmax, QTmin, QRS, JT and Tp-e intervals and estimated Tp-e/QT max, Tp- e/QTc max, Tp-e/JT and Tp-e/JTc rates and QTc max, QTc min, cQTd and JTc intervals. RESULTS QT max, QT min, JT, cQTd, Tp-e, Tp-e/QT max, Tp-e/QTc max, Tp-e/JT, Tp-e/JTc values were significantly higher in RT-PCR Covid-19 patient group. CONCLUSION Positive RT-PCR Covid-19 patients should be followed more closely, in terms of high ventricular repolarization parameters and preventing ventricular arrhythmias that may develop due to this.
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Affiliation(s)
- Ersin Ibisoglu
- Cardiology Department, Başakşehir Çam and Sakura City Hospital, İstanbul, Turkey
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18
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Peirlinck M, Sahli Costabal F, Kuhl E. Sex Differences in Drug-Induced Arrhythmogenesis. Front Physiol 2021; 12:708435. [PMID: 34489728 PMCID: PMC8417068 DOI: 10.3389/fphys.2021.708435] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/14/2021] [Indexed: 12/25/2022] Open
Abstract
The electrical activity in the heart varies significantly between men and women and results in a sex-specific response to drugs. Recent evidence suggests that women are more than twice as likely as men to develop drug-induced arrhythmia with potentially fatal consequences. Yet, the sex-specific differences in drug-induced arrhythmogenesis remain poorly understood. Here we integrate multiscale modeling and machine learning to gain mechanistic insight into the sex-specific origin of drug-induced cardiac arrhythmia at differing drug concentrations. To quantify critical drug concentrations in male and female hearts, we identify the most important ion channels that trigger male and female arrhythmogenesis, and create and train a sex-specific multi-fidelity arrhythmogenic risk classifier. Our study reveals that sex differences in ion channel activity, tissue conductivity, and heart dimensions trigger longer QT-intervals in women than in men. We quantify the critical drug concentration for dofetilide, a high risk drug, to be seven times lower for women than for men. Our results emphasize the importance of including sex as an independent biological variable in risk assessment during drug development. Acknowledging and understanding sex differences in drug safety evaluation is critical when developing novel therapeutic treatments on a personalized basis. The general trends of this study have significant implications on the development of safe and efficacious new drugs and the prescription of existing drugs in combination with other drugs.
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Affiliation(s)
- Mathias Peirlinck
- Department of Mechanical Engineering, Stanford University, Stanford, CA, United States
| | - Francisco Sahli Costabal
- Department of Mechanical and Metallurgical Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
- Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
- Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago, Chile
| | - Ellen Kuhl
- Department of Mechanical Engineering, Stanford University, Stanford, CA, United States
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Zhu Y, Bai J, Lo A, Lu Y, Zhao J. Mechanisms underlying pro-arrhythmic abnormalities arising from Pitx2-induced electrical remodelling: an in silico intersubject variability study. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:106. [PMID: 33569408 PMCID: PMC7867875 DOI: 10.21037/atm-20-5660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Background Electrical remodelling as a result of the homeodomain transcription factor 2 (Pitx2)-dependent gene regulation induces atrial fibrillation (AF) with different mechanisms. The purpose of this study was to identify Pitx2-induced changes in ionic currents that cause action potential (AP) shortening and lead to triggered activity. Methods Populations of computational atrial AP models were developed based on AP recordings from sinus rhythm (SR) and AF patients. Models in the AF population were divided into triggered and untriggered AP groups to evaluate the relationship between each ion current regulated by Pitx2 and triggered APs. Untriggered AP models were then divided into shortened and unshortened AP groups to determine which Pitx2-dependent ion currents contribute to AP shortening. Results According to the physiological range of AP biomarkers measured experimentally, populations of 2,885 SR and 4,781 AF models out of the initial pool of 30,000 models were selected. Models in the AF population predicted AP shortening and triggered activity observed in experiments in Pitx2-induced remodelling conditions. The AF models included 925 triggered AP models, 1,412 shortened AP models and 2,444 unshortened AP models. Intersubject variability in IKs and ICaL primarily modulated variability in AP duration (APD) in all shortened and unshortened AP models, whereas intersubject variability in IK1 and SERCA mainly contributed to the variability in AP morphology in all triggered and untriggered AP models. The incidence of shortened AP was positively correlated with IKs and IK1 and was negatively correlated with INa , ICaL and SERCA, whereas the incidence of triggered AP was negatively correlated with IKs and IK1 and was positively correlated with INa , ICaL and SERCA. Conclusions Electrical remodelling due to Pitx2 upregulation may increase the incidence of shortened AP, whereas electrical remodelling arising from Pitx2 downregulation may favor to the genesis of triggered AP.
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Affiliation(s)
- Yijie Zhu
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, China
| | - Jieyun Bai
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, China
| | - Andy Lo
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - Yaosheng Lu
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, China
| | - Jichao Zhao
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
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20
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Rieg T, Frick J, Baumgartl H, Buettner R. Demonstration of the potential of white-box machine learning approaches to gain insights from cardiovascular disease electrocardiograms. PLoS One 2020; 15:e0243615. [PMID: 33332440 PMCID: PMC7746264 DOI: 10.1371/journal.pone.0243615] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 11/24/2020] [Indexed: 11/18/2022] Open
Abstract
We present the results from a white-box machine learning approach to detect cardiac arrhythmias using electrocardiographic data. A C5.0 is trained to recognize four classes using common features. The four classes are (i) atrial fibrillation and atrial flutter, (ii) tachycardias (iii), sinus bradycardia and (iv) sinus rhythm. Data from 10,646 subjects, 83% of whom have at least one arrhythmia and 17% of whom exhibit a normal sinus rhythm, are used. The C5.0 is trained using 10-fold cross-validation and is able to achieve a balanced accuracy of 95.35%. By using the white-box machine learning approach, a clear and comprehensible tree structure can be revealed, which has selected the 5 most important features from a total of 24 features. These 5 features are ventricular rate, RR-Interval variation, atrial rate, age and difference between longest and shortest RR-Interval. The combination of ventricular rate, RR-Interval variation and atrial rate is especially relevant to achieve classification accuracy, which can be disclosed through the tree. The tree assigns unique values to distinguish the classes. These findings could be applied in medicine in the future. It can be shown that a white-box machine learning approach can reveal granular structures, thus confirming known linear relationships and also revealing nonlinear relationships. To highlight the strength of the C5.0 with respect to this structural revelation, the results of further white-box machine learning and black-box machine learning algorithms are presented.
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Affiliation(s)
- Thilo Rieg
- Machine Learning Research Group, Aalen University, Aalen, Germany
| | - Janek Frick
- Machine Learning Research Group, Aalen University, Aalen, Germany
| | | | - Ricardo Buettner
- Machine Learning Research Group, Aalen University, Aalen, Germany
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21
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Öztürk F, Karaduman M, Çoldur R, İncecik Ş, Güneş Y, Tuncer M. Interpretation of arrhythmogenic effects of COVID-19 disease through ECG. Aging Male 2020; 23:1362-1365. [PMID: 32449420 DOI: 10.1080/13685538.2020.1769058] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE We aimed to detect the malignant arrhythmic potential of COVID-19 with surface electrocardiographic (ECG) markers. MATERIAL AND METHOD Of the ECG parameters PR, QT, QTc, QTd, TPe, and Tpe/QTc were measured in 51 COVID-19 patients and 40 in control subjects. RESULTS Compared to control group mean QTc (410.8 ± 24.3 msec vs. 394.6 ± 20.3 msec, p < .001) and Tpe/QTc (0.19 ± 0.02 vs. 0.18 ± 0.04, p = .036) and median QTd (47.52 vs. 46.5) values were significantly higher in COVID-19 patients. Troponin levels were significantly correlated with heart rate (r = 0.387, p = .006) but not with ECG parameters. CONCLUSION Several ventricular arrhythmia surface ECG predictors including QTc, QTd, and Tpe/QTc are increased in COVID-19 patients. Since medications used in COVID-19 patients have the potential to affect these parameters, giving importance to these ECG markers may have a significant contribution in decreasing disease-related arrhythmias.
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Affiliation(s)
- Fatih Öztürk
- Cardiology Department, Van Yüzüncü Yıl Universty, Van, Turkey
| | | | - Rabia Çoldur
- Cardiology Department, Van Yüzüncü Yıl Universty, Van, Turkey
| | - Şaban İncecik
- Department of Infectious Diseases & Clinical Microbiology, Faculty of Medicine, Van Yüzüncü Yıl Universty, Van, Turkey
| | - Yılmaz Güneş
- Cardiology Department, Bolu Abant İzzet Baysal Universty, Bolu, Turkey
| | - Mustafa Tuncer
- Cardiology Department, Van Yüzüncü Yıl Universty, Van, Turkey
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22
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Hiyamuta H, Tanaka S, Taniguchi M, Tokumoto M, Fujisaki K, Nakano T, Tsuruya K, Kitazono T. The Incidence and Associated Factors of Sudden Death in Patients on Hemodialysis: 10-Year Outcome of the Q-Cohort Study. J Atheroscler Thromb 2019; 27:306-318. [PMID: 31434843 PMCID: PMC7192813 DOI: 10.5551/jat.49833] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Aim: The incidence of sudden death and its risk factors in patients on hemodialysis remain unclear. This study aimed to clarify the incidence of sudden death and its risk factors in Japanese patients on hemodialysis. Methods: A total of 3505 patients on hemodialysis aged ≥ 18 years were followed for 10 years. Multivariate-adjusted hazard ratio (HR) with 95% confidence interval (95% CI) of each risk factor of sudden death were calculated using a Cox proportional hazards model. Results: During the 10-year follow-up, 1735 patients died, including 227 (13%) sudden deaths. The incidence rate of sudden death was 9.13 per 1000 person-years. In multivariable-adjusted Cox analysis, male sex (HR 1.67; 95% CI 1.20–2.33), age (HR 1.44; 95% CI 1.26–1.65 per 10-year higher), the presence of diabetes (HR 2.45; 95% CI 1.82–3.29), history of cardiovascular disease (HR 1.85; 95% CI 1.38–2.46), cardiothoracic ratio (HR 1.21; 95% CI 1.07–1.39 per 5% higher), serum C-reactive protein (HR 1.11; 95% CI 1.03–1.20 per 1-mg/dL higher), and serum phosphate (HR 1.15; 95% CI 1.03–1.30 per 1-mg/dL higher) were independent predictors of sudden death. A subgroup analysis stratified by sex or age showed that lower serum corrected calcium levels, not using vitamin D receptor activators in women, and a shorter dialysis session length in men or older people (≥ 65 years) increased the risk for sudden death. Conclusions: This study clarified the incidence of sudden death and its specific predictors in Japanese patients on hemodialysis.
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Affiliation(s)
- Hiroto Hiyamuta
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University
| | | | | | | | - Kiichiro Fujisaki
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University
| | - Toshiaki Nakano
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University
| | | | - Takanari Kitazono
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University
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23
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Abstract
Objective: To evaluate ventricular repolarization parameters using the interval from the peak to the end of the T wave (Tp–Te), together with QT and corrected QT (QTc) intervals, QT dispersion (QTd), and Tp-Te/QTc ratio in patients with Turner syndrome (pwTS) and to compare the results with those from healthy controls. Methods: In total, 38 patients previously diagnosed with Turner syndrome (TS) and 35 healthy girls (controls) were included in our cross-sectional study. Twelve-lead electrocardiography (ECG) and echocardiography after a 30-min rest were performed. The QT, QTc, QTd, Tp-Te interval, and Tp-Te/QTc ratio were determined. Results: No differences in age or sex were observed between the groups. QT intervals were similar in both groups [pwTS: 354.76±25.33 ms, controls (C): 353.29±17.51 ms, p=0.775]. pwTS had significantly longer QTc and QTd than controls (411.87±22.66 ms vs. 392.06±13.21 ms, p<0.001 and 40.31±2.02 ms vs. 37.54±1.83 ms, p<0.001, respectively). Similarly, the Tp-Te interval and Tp-Te/QTc ratio were significantly longer in pwTS than in controls (71.89±3.39 ms vs. 65.34±2.88 ms, p<0.001 and 0.17±0.01 vs. 0.16±0.01, p=0.01). Conclusion: As pwTS have longer QTc, QTd, Tp–Te interval, and Tp-Te/QTc ratio, an annual follow-up with ECG can provide awareness and even prevent sudden death in them. Also avoiding the use of drugs that makes repolarization anomaly and having knowledge about the side effects of these drugs are essential in pwTS.
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Machuki JO, Zhang HY, Geng J, Fu L, Adzika GK, Wu L, Shang W, Wu J, Kexue L, Zhao Z, Sun H. Estrogen regulation of cardiac cAMP-L-type Ca 2+ channel pathway modulates sex differences in basal contraction and responses to β 2AR-mediated stress in left ventricular apical myocytes. Cell Commun Signal 2019; 17:34. [PMID: 30987657 PMCID: PMC6466778 DOI: 10.1186/s12964-019-0346-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/27/2019] [Indexed: 12/16/2022] Open
Abstract
Backgrounds/Aim Male and female hearts have many structural and functional differences. Here, we investigated the role of estrogen (E2) in the mechanisms of sex differences in contraction through the cAMP-L-type Ca2+channel pathway in adult mice left ventricular (LV) apical myocytes at basal and stress state. Methods Isolated LV apical myocytes from male, female (Sham) and ovariectomised mice (OVX) were used to investigate contractility, Ca2+ transients and L-type Ca2+ channel (LTCC) function. The levels of β2AR, intracellular cAMP, phosphodiesterase (PDE 3 and PDE 4), RyR2, PLB, SLN, and SERCA2a were compared among the experimental groups. Results We found that (1) intracellular cAMP, ICaL density, contraction and Ca2+ transient amplitudes were larger in Sham and OVX + E2 myocytes compared to male and OVX. (2) The mRNA expression of PDE 3 and 4 were lower in Sham and OVX + E2 groups compared with male and OVX groups. Treatment of myocytes with IBMX (100 μM) increased contraction and Ca2+ transient amplitude in both sexes and canceled differences between them. (3) β2AR-mediated stress decreased cAMP concentration and peak contraction and Ca2+ transient amplitude only in male and OVX groups but not in Sham or OVX + E2 groups suggesting a cardioprotective role of E2 in female mice. (4) Pretreatment of OVX myocytes with GPR30 antagonist G15 (100 nM) abolished the effects of E2, but ERα and ERβ antagonist ICI 182,780 (1 μM) did not. Moreover, activation of GPR30 with G1 (100 nM) replicated the effects of E2 on cAMP, contraction and Ca2+ transient amplitudes suggesting that the acute effects of E2 were mediated by GPR30 via non-genomic signaling. (5) mRNA expression of RyR2 was higher in myocytes from Sham than those of male while PLB and SLN were higher in male than Sham but no sex differences were observed in the mRNA of SERCA2a. Conclusion Collectively, these results demonstrate that E2 modulates the expression of genes related to the cAMP-LTCC pathway and contributes to sex differences in cardiac contraction and responses to stress. We also show that estrogen confers cardioprotection against cardiac stress by non-genomic acute signaling via GPR30.
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Affiliation(s)
| | - Hong-Yuan Zhang
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, 221002, China
| | - Juan Geng
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, 221002, China
| | - Lu Fu
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Gabriel Komla Adzika
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Lijuan Wu
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.,Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, 221002, China
| | - Wenkang Shang
- Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, 221002, China
| | - Jinxia Wu
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Li Kexue
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Zhiwei Zhao
- Institute of Cardiovascular Disease Research, Xuzhou Medical University, Xuzhou, 221002, China
| | - Hong Sun
- Physiology Department, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
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25
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Abstract
The cardiovascular system is particularly sensitive to androgens, but some controversies exist regarding the effect of testosterone on the heart. While among anabolic abusers, cases of sudden cardiac death have been described, recently it was reported that low serum level of testosterone was correlated with increased risk of cardiovascular diseases (CVD) and mortality rate. This review aims to evaluate the effect of testosterone on myocardial tissue function, coronary artery disease (CAD), and death. Low testosterone level is associated with increased incidence of CAD and mortality. Testosterone administration in hypogonadal elderly men and women has a positive effect on cardiovascular function and improved clinical outcomes and survival time. Although at supraphysiologic doses, androgen may have a toxic effect, and at physiological levels, testosterone is safe and exerts a beneficial effect on myocardial function including mechanisms at cellular and mitochondrial level. The interaction with free testosterone and estradiol should be considered. Further studies are necessary to better understand the interaction mechanisms for an optimal androgen therapy in CVD.
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Affiliation(s)
- Vittorio Emanuele Bianchi
- Clinical Center Stella Maris, Laboratory of Physiology of Exercise, Strada Rovereta 42, 47891, Falciano, Republic of San Marino.
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26
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Sakamoto K, Kurokawa J. Involvement of sex hormonal regulation of K + channels in electrophysiological and contractile functions of muscle tissues. J Pharmacol Sci 2019; 139:259-265. [PMID: 30962088 DOI: 10.1016/j.jphs.2019.02.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 02/14/2019] [Accepted: 02/28/2019] [Indexed: 11/19/2022] Open
Abstract
Sex hormones, such as testosterone, progesterone, and 17β-estradiol, control various physiological functions. This review focuses on the sex hormonal regulation of K+ channels and the effects of such regulation on electrophysiological and contractile functions of muscles. In the cardiac tissue, testosterone and progesterone shorten action potential, and estrogen lengthens QT interval, a marker of increased risk of ventricular tachyarrhythmias. We have shown that testosterone and progesterone in physiological concentration activate KCNQ1 channels via membrane-delimited sex hormone receptor/eNOS pathways to shorten the action potential duration. Mitochondrial K+ channels are also involved in the protection of cardiac muscle. Testosterone and 17β-estradiol directly activate mitochondrial inner membrane K+ channels (Ca2+ activated K+ channel (KCa channel) and ATP-sensitive K+ channel (KATP channel)) that are involved in ischemic preconditioning and cardiac protection. During pregnancy, uterine blood flow increases to support fetal growth and development. It has been reported that 17β-estradiol directly activates large-conductance Ca2+-activated K+ channel (BKCa channel) attenuating arterial contraction. Furthermore, 17β-estradiol increases expression of BKCa channel β1 subunit which enhances BKCa channel activity by DNA demethylation. These findings are useful for understanding the mechanisms of sex or generation-dependent differences in the physiological and pathological functions of muscles, and the mechanisms of drug actions.
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Affiliation(s)
- Kazuho Sakamoto
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
| | - Junko Kurokawa
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
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27
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Bernasochi GB, Boon WC, Delbridge LMD, Bell JR. The myocardium and sex steroid hormone influences. CURRENT OPINION IN PHYSIOLOGY 2018. [DOI: 10.1016/j.cophys.2018.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Aleong RG, Chandara M. Management of Brugada Syndrome in the Developing Countries. CURRENT CARDIOVASCULAR RISK REPORTS 2018. [DOI: 10.1007/s12170-018-0595-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Masuda K, Takanari H, Morishima M, Ma F, Wang Y, Takahashi N, Ono K. Testosterone-mediated upregulation of delayed rectifier potassium channel in cardiomyocytes causes abbreviation of QT intervals in rats. J Physiol Sci 2018; 68:759-767. [PMID: 29332211 PMCID: PMC10717990 DOI: 10.1007/s12576-017-0590-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 12/26/2017] [Indexed: 12/01/2022]
Abstract
Men have shorter rate-corrected QT intervals (QTc) than women, especially at the period of adolescence or later. The aim of this study was to elucidate the long-term effects of testosterone on cardiac excitability parameters including electrocardiogram (ECG) and potassium channel current. Testosterone shortened QT intervals in ECG in castrated male rats, not immediately after, but on day 2 or later. Expression of Kv7.1 (KCNQ1) mRNA was significantly upregulated by testosterone in cardiomyocytes of male and female rats. Short-term application of testosterone was without effect on delayed rectifier potassium channel current (IKs), whereas IKs was significantly increased in cardiomyocytes treated with dihydrotestosterone for 24 h, which was mimicked by isoproterenol (24 h). Gene-selective inhibitors of a transcription factor SP1, mithramycin, abolished the effects of testosterone on Kv7.1. Testosterone increases Kv7.1-IKs possibly through a pathway related to a transcription factor SP1, suggesting a genomic effect of testosterone as an active factor for cardiac excitability.
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Affiliation(s)
- Kimiko Masuda
- Department of Cardiology and Clinical Examination, Oita University School of Medicine, Yufu, Oita, 879-5593, Japan
- Department of Pathophysiology, Oita University School of Medicine, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan
| | - Hiroki Takanari
- Department of Pathophysiology, Oita University School of Medicine, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan
| | - Masaki Morishima
- Department of Pathophysiology, Oita University School of Medicine, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan
| | - FangFang Ma
- Department of Pathophysiology, Oita University School of Medicine, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan
| | - Yan Wang
- Department of Cardiology and Clinical Examination, Oita University School of Medicine, Yufu, Oita, 879-5593, Japan
- Department of Pathophysiology, Oita University School of Medicine, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan
| | - Naohiko Takahashi
- Department of Cardiology and Clinical Examination, Oita University School of Medicine, Yufu, Oita, 879-5593, Japan
| | - Katsushige Ono
- Department of Pathophysiology, Oita University School of Medicine, 1-1 Idaigaoka, Hasama, Yufu, Oita, 879-5593, Japan.
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30
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Abstract
Women have a longer QT interval than men, which appears to evolve after puberty suggesting that sex hormones have an influence on cardiac electrophysiology. Sex hormones do in fact regulate cardiac ion channels via genomic and nongenomic pathways. Women are at greater risk for life-threatening arrhythmias under conditions that prolong the QT interval. In addition, women exhibit greater sensitivity to QT interval–prolonging drugs. Female sex has also an impact on propensity to cardiovascular disease, including atrial fibrillation. However, ex vivo recorded atrial action potentials (APs) from female and male patients in atrial fibrillation did not exhibit significant differences in shape, except that APs from women had slower upstroke velocity. It is concluded that sex-related differences should be taken into account not only in the clinics, but also in basic research.
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Affiliation(s)
- Ursula Ravens
- Institute of Experimental Cardiovascular Medicine, University Heart Center Freiburg • Bad Krozingen, Medical Faculty, University of Freiburg, Germany; Institute of Physiology, Medical Faculty Carl Gustav Carus, TU Dresden, Germany
- Institute of Experimental Cardiovascular Medicine, University Heart Center Freiburg • Bad Krozingen, Medical Faculty, University of Freiburg, Germany; Institute of Physiology, Medical Faculty Carl Gustav Carus, TU Dresden, Germany
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31
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Hazeki D, Ninomiya Y, Ueno K, Yoshinaga M. Tentative Screening Criteria for Short QT Interval in Children and Adolescents. Circ J 2018; 82:2627-2633. [DOI: 10.1253/circj.cj-18-0213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Daisuke Hazeki
- Department of Pediatrics, National Hospital Organization Kagoshima Medical Center
- Department of Pediatrics, Kagoshima University Graduate School of Medicine and Dental Sciences
| | - Yumiko Ninomiya
- Department of Pediatrics, Kagoshima University Graduate School of Medicine and Dental Sciences
| | - Kentaro Ueno
- Department of Pediatrics, Kagoshima University Graduate School of Medicine and Dental Sciences
| | - Masao Yoshinaga
- Department of Pediatrics, National Hospital Organization Kagoshima Medical Center
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Michowitz Y, Milman A, Sarquella-Brugada G, Andorin A, Champagne J, Postema PG, Casado-Arroyo R, Leshem E, Juang JJ, Giustetto C, Tfelt-Hansen J, Wijeyeratne YD, Veltmann C, Corrado D, Kim SH, Delise P, Maeda S, Gourraud JB, Sacher F, Mabo P, Takahashi Y, Kamakura T, Aiba T, Conte G, Hochstadt A, Mizusawa Y, Rahkovich M, Arbelo E, Huang Z, Denjoy I, Napolitano C, Brugada R, Calo L, Priori SG, Takagi M, Behr ER, Gaita F, Yan GX, Brugada J, Leenhardt A, Wilde AA, Brugada P, Kusano KF, Hirao K, Nam GB, Probst V, Belhassen B. Fever-related arrhythmic events in the multicenter Survey on Arrhythmic Events in Brugada Syndrome. Heart Rhythm 2018; 15:1394-1401. [DOI: 10.1016/j.hrthm.2018.04.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Indexed: 11/28/2022]
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Prins BP, Mead TJ, Brody JA, Sveinbjornsson G, Ntalla I, Bihlmeyer NA, van den Berg M, Bork-Jensen J, Cappellani S, Van Duijvenboden S, Klena NT, Gabriel GC, Liu X, Gulec C, Grarup N, Haessler J, Hall LM, Iorio A, Isaacs A, Li-Gao R, Lin H, Liu CT, Lyytikäinen LP, Marten J, Mei H, Müller-Nurasyid M, Orini M, Padmanabhan S, Radmanesh F, Ramirez J, Robino A, Schwartz M, van Setten J, Smith AV, Verweij N, Warren HR, Weiss S, Alonso A, Arnar DO, Bots ML, de Boer RA, Dominiczak AF, Eijgelsheim M, Ellinor PT, Guo X, Felix SB, Harris TB, Hayward C, Heckbert SR, Huang PL, Jukema JW, Kähönen M, Kors JA, Lambiase PD, Launer LJ, Li M, Linneberg A, Nelson CP, Pedersen O, Perez M, Peters A, Polasek O, Psaty BM, Raitakari OT, Rice KM, Rotter JI, Sinner MF, Soliman EZ, Spector TD, Strauch K, Thorsteinsdottir U, Tinker A, Trompet S, Uitterlinden A, Vaartjes I, van der Meer P, Völker U, Völzke H, Waldenberger M, Wilson JG, Xie Z, Asselbergs FW, Dörr M, van Duijn CM, Gasparini P, Gudbjartsson DF, Gudnason V, Hansen T, Kääb S, Kanters JK, Kooperberg C, Lehtimäki T, Lin HJ, Lubitz SA, Mook-Kanamori DO, Conti FJ, Newton-Cheh CH, Rosand J, Rudan I, Samani NJ, Sinagra G, Smith BH, Holm H, Stricker BH, Ulivi S, Sotoodehnia N, Apte SS, van der Harst P, Stefansson K, Munroe PB, Arking DE, Lo CW, Jamshidi Y. Exome-chip meta-analysis identifies novel loci associated with cardiac conduction, including ADAMTS6. Genome Biol 2018; 19:87. [PMID: 30012220 PMCID: PMC6048820 DOI: 10.1186/s13059-018-1457-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 05/23/2018] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Genome-wide association studies conducted on QRS duration, an electrocardiographic measurement associated with heart failure and sudden cardiac death, have led to novel biological insights into cardiac function. However, the variants identified fall predominantly in non-coding regions and their underlying mechanisms remain unclear. RESULTS Here, we identify putative functional coding variation associated with changes in the QRS interval duration by combining Illumina HumanExome BeadChip genotype data from 77,898 participants of European ancestry and 7695 of African descent in our discovery cohort, followed by replication in 111,874 individuals of European ancestry from the UK Biobank and deCODE cohorts. We identify ten novel loci, seven within coding regions, including ADAMTS6, significantly associated with QRS duration in gene-based analyses. ADAMTS6 encodes a secreted metalloprotease of currently unknown function. In vitro validation analysis shows that the QRS-associated variants lead to impaired ADAMTS6 secretion and loss-of function analysis in mice demonstrates a previously unappreciated role for ADAMTS6 in connexin 43 gap junction expression, which is essential for myocardial conduction. CONCLUSIONS Our approach identifies novel coding and non-coding variants underlying ventricular depolarization and provides a possible mechanism for the ADAMTS6-associated conduction changes.
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Affiliation(s)
- Bram P Prins
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St George's University of London, London, SW17 0RE, UK
- Department of Public Health and Primary Care, MRC/BHF Cardiovascular Epidemiology Unit, University of Cambridge, Strangeways Research Laboratory, Worts' Causeway, Cambridge, CB1 8RN, UK
| | - Timothy J Mead
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, OH, 44195, USA
| | - Jennifer A Brody
- Department of Medicine, Cardiovascular Health Research Unit, University of Washington, Seattle, WA, 98101, USA
| | | | - Ioanna Ntalla
- Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
- NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Nathan A Bihlmeyer
- Predoctoral Training Program in Human Genetics, McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Marten van den Berg
- Department of Medical Informatics Erasmus MC - University Medical Center, P.O. Box 2040, Rotterdam, 3000, CA, The Netherlands
| | - Jette Bork-Jensen
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2100, Copenhagen, Denmark
| | - Stefania Cappellani
- Institute for Maternal and Child Health - IRCCS "Burlo Garofolo", 34137, Trieste, Italy
| | - Stefan Van Duijvenboden
- Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
- Institute of Cardiovascular Science, University College London, London, WC1E 6BT, UK
| | - Nikolai T Klena
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15201, USA
| | - George C Gabriel
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15201, USA
| | - Xiaoqin Liu
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15201, USA
| | - Cagri Gulec
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15201, USA
| | - Niels Grarup
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2100, Copenhagen, Denmark
| | - Jeffrey Haessler
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Leanne M Hall
- Department of Cardiovascular Sciences, University of Leicester, Cardiovascular Research Centre, Glenfield Hospital, Leicester, LE3 9QP, UK
- Leicester NIHR Biomedical Research Centre, Glenfield Hospital, Leicester, LE3 9QP, UK
| | - Annamaria Iorio
- Cardiovascular Department, Ospedali Riuniti and University of Trieste, 34100, Trieste, Italy
| | - Aaron Isaacs
- CARIM School for Cardiovascular Diseases, Maastricht Center for Systems Biology (MaCSBio), and Department of Biochemistry, Maastricht University, Universiteitssingel 60, Maastricht, 6229 ER, The Netherlands
- Department of Epidemiology, Genetic Epidemiology Unit, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Ruifang Li-Gao
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, 2300RC, The Netherlands
| | - Honghuang Lin
- Department of Medicine, Section of Computational Biomedicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Ching-Ti Liu
- Biostatistics Department, Boston University School of Public Health, Boston, MA, 02118, USA
| | - Leo-Pekka Lyytikäinen
- Department of Clinical Chemistry, Fimlab Laboratories, 33520, Tampere, Finland
- Department of Clinical Chemistry, Faculty of Medicine and Life Sciences, University of Tampere, 33014, Tampere, Finland
| | - Jonathan Marten
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Hao Mei
- Department of Data Science, School of Population Health, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Martina Müller-Nurasyid
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Department of Medicine I, University Hospital Munich, Ludwig-Maximilians University, Munich, Germany
- German Centre for Cardiovascular Research (DZHK); partner site: Munich Heart Alliance, Munich, Germany
| | - Michele Orini
- Mechanical Engineering Department, University College London, London, WC1E 6BT, UK
- Barts Heart Centre, St Bartholomews Hospital, London, EC1A 7BE, UK
| | - Sandosh Padmanabhan
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, BHF GCRC, Glasgow, G12 8TA, UK
| | - Farid Radmanesh
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA, 02114, USA
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
| | - Julia Ramirez
- Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
- NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Antonietta Robino
- Institute for Maternal and Child Health - IRCCS "Burlo Garofolo", 34137, Trieste, Italy
| | - Molly Schwartz
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15201, USA
| | - Jessica van Setten
- Division Heart & Lungs, Department of Cardiology, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
| | - Albert V Smith
- Icelandic Heart Association, 201, Kopavogur, Iceland
- Department of Cardiology, Faculty of Medicine, University of Iceland, 101, Reykjavik, Iceland
| | - Niek Verweij
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
- University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Cardiovascular Research Center and Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA, 2114.0, USA
| | - Helen R Warren
- Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
- NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Stefan Weiss
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine and Ernst-Moritz-Arndt-University Greifswald, 17475, Greifswald, Germany
- DZHK (German Centre for Cardiovascular Research); Partner site Greifswald, 17475, Greifswald, Germany
| | - Alvaro Alonso
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - David O Arnar
- deCODE genetics/Amgen, Inc., 101, Reykjavik, Iceland
- Department of Medicine, Landspitali University Hospital, 101, Reykjavik, Iceland
| | - Michiel L Bots
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands
| | - Rudolf A de Boer
- University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Anna F Dominiczak
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Mark Eijgelsheim
- Erasmus MC - University Medical Center Rotterdam, P.O. Box 2040, Rotterdam, 3000 CA, The Netherlands
| | - Patrick T Ellinor
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA, 02114, USA
| | - Xiuqing Guo
- The Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
- Division of Genomic Outcomes, Department of Pediatrics, Harbor-UCLA Medical Center, Torrance, CA, 90502, USA
| | - Stephan B Felix
- DZHK (German Centre for Cardiovascular Research); Partner site Greifswald, 17475, Greifswald, Germany
- Department of Internal Medicine B - Cardiology, Pneumology, Infectious Diseases, Intensive Care Medicine, University Medicine Greifswald, 17475, Greifswald, Germany
| | - Tamara B Harris
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, Intramural Research Program, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Caroline Hayward
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Susan R Heckbert
- Cardiovascular Health Research Unit and the Department of Epidemiology, University of Washington, Seattle, WA, 98101, USA
| | - Paul L Huang
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA, 02114, USA
| | - J W Jukema
- Department of Cardiology, Leiden University Medical Center, Leiden, 2300RC, The Netherlands
- Durrer Center for Cardiogenetic Research, Amsterdam, The Netherlands
- Interuniversity Cardiology Institute of The Netherlands, Utrecht, The Netherlands
| | - Mika Kähönen
- Department of Clinical Physiology, Tampere University Hospital, 33521, Tampere, Finland
- Department of Clinical Physiology, Faculty of Medicine and Life Sciences, University of Tampere, 33014, Tampere, Finland
| | - Jan A Kors
- Department of Medical Informatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Pier D Lambiase
- Institute of Cardiovascular Science, University College London, London, WC1E 6BT, UK
- Barts Heart Centre, St Bartholomews Hospital, London, EC1A 7BE, UK
| | - Lenore J Launer
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, Intramural Research Program, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Man Li
- Division of Nephrology & Hypertension, Internal Medicine, School of Medicine, University of Utah, Salt Lake City, UT, 84109, USA
| | - Allan Linneberg
- Research Centre for Prevention and Health, Capital Region of Denmark, 2600, Glostrup, Denmark
- Department of Clinical Experimental Research, Rigshospitalet, 2600, Glostrup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200.0, Copenhagen, Denmark
| | - Christopher P Nelson
- Department of Cardiovascular Sciences, University of Leicester, Cardiovascular Research Centre, Glenfield Hospital, Leicester, LE3 9QP, UK
- Leicester NIHR Biomedical Research Centre, Glenfield Hospital, Leicester, LE3 9QP, UK
| | - Oluf Pedersen
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2100, Copenhagen, Denmark
| | - Marco Perez
- Division of Cardiovascular Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Annette Peters
- German Centre for Cardiovascular Research (DZHK); partner site: Munich Heart Alliance, Munich, Germany
- Institute of Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research, Neuherberg, Germany
| | - Ozren Polasek
- Faculty of Medicine, University of Split, Split, Croatia
| | - Bruce M Psaty
- Cardiovascular Health Research Unit, Departments of Medicine, Epidemiology, and Health Services, University of Washington, Seattle, WA, 98101, USA
- Kaiser Permanente Washington Health Research Institute, Seattle, WA, 98101, USA
| | - Olli T Raitakari
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, 20521, Turku, Finland
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, 20014, Turku, Finland
| | - Kenneth M Rice
- Department of Biostatistics, University of Washington, Seattle, WA, 98195, USA
| | - Jerome I Rotter
- The Institute for Translational Genomics and Population Sciences and Departments of Pediatrics and Medicine, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, 90502, USA
| | - Moritz F Sinner
- Department of Medicine I, University Hospital Munich, Ludwig-Maximilians University, Munich, Germany
- German Centre for Cardiovascular Research (DZHK); partner site: Munich Heart Alliance, Munich, Germany
| | - Elsayed Z Soliman
- Epidemiological Cardiology Research Center (EPICARE), Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Konstantin Strauch
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Chair of Genetic Epidemiology, IBE, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Unnur Thorsteinsdottir
- deCODE genetics/Amgen, Inc., 101, Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, 101, Reykjavik, Iceland
| | - Andrew Tinker
- Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
- NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Stella Trompet
- Department of Cardiology, Leiden University Medical Center, Leiden, 2300RC, The Netherlands
- Department of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, 2300RC, The Netherlands
| | - André Uitterlinden
- Human Genotyping Facility Erasmus MC - University Medical Center Rotterdam, P.O. Box 2040, Rotterdam, 3000 CA, The Netherlands
| | - Ilonca Vaartjes
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands
| | - Peter van der Meer
- University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Uwe Völker
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine and Ernst-Moritz-Arndt-University Greifswald, 17475, Greifswald, Germany
- DZHK (German Centre for Cardiovascular Research); Partner site Greifswald, 17475, Greifswald, Germany
| | - Henry Völzke
- DZHK (German Centre for Cardiovascular Research); Partner site Greifswald, 17475, Greifswald, Germany
- Institute for Community Medicine, University Medicine Greifswald, 17475, Greifswald, Germany
| | - Melanie Waldenberger
- German Centre for Cardiovascular Research (DZHK); partner site: Munich Heart Alliance, Munich, Germany
- Institute of Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Research unit of Molecular Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - James G Wilson
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Zhijun Xie
- TCM Clinical Basis Institute, Zhejiang Chinese Medical University, Hangzhou, 310000, Zhejiang, China
| | - Folkert W Asselbergs
- Division Heart & Lungs, Department of Cardiology, University Medical Center Utrecht, University of Utrecht, Utrecht, the Netherlands
- Durrer Center for Cardiovascular Research, Netherlands Heart Institute, Utrecht, the Netherlands
- Institute of Cardiovascular Science, Faculty of Population Health Sciences, University College London, London, UK
- Farr Institute of Health Informatics Research and Institute of Health Informatics, University College London, London, UK
| | - Marcus Dörr
- DZHK (German Centre for Cardiovascular Research); Partner site Greifswald, 17475, Greifswald, Germany
- Department of Internal Medicine B - Cardiology, Pneumology, Infectious Diseases, Intensive Care Medicine, University Medicine Greifswald, 17475, Greifswald, Germany
| | - Cornelia M van Duijn
- Department of Epidemiology, Genetic Epidemiology Unit, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Paolo Gasparini
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34100, Trieste, Italy
- Division of Experimental Genetics, Sidra Medical and Research Center, Doha, Qatar
| | - Daniel F Gudbjartsson
- deCODE genetics/Amgen, Inc., 101, Reykjavik, Iceland
- School of Engineering and Natural Sciences, University of Iceland, 101, Reykjavik, Iceland
| | - Vilmundur Gudnason
- Icelandic Heart Association, 201, Kopavogur, Iceland
- Department of Cardiology, Faculty of Medicine, University of Iceland, 101, Reykjavik, Iceland
| | - Torben Hansen
- The Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2100, Copenhagen, Denmark
| | - Stefan Kääb
- Department of Medicine I, University Hospital Munich, Ludwig-Maximilians University, Munich, Germany
- German Centre for Cardiovascular Research (DZHK); partner site: Munich Heart Alliance, Munich, Germany
| | - Jørgen K Kanters
- Laboratory of Experimental Cardiology, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Charles Kooperberg
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories, 33520, Tampere, Finland
- Department of Clinical Chemistry, Faculty of Medicine and Life Sciences, University of Tampere, 33014, Tampere, Finland
| | - Henry J Lin
- The Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
- Division of Medical Genetics, Department of Pediatrics, Harbor-UCLA Medical Center, Torrance, 90502, USA
| | - Steven A Lubitz
- Division of Genomic Outcomes, Department of Pediatrics, Harbor-UCLA Medical Center, Torrance, CA, 90502, USA
| | - Dennis O Mook-Kanamori
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, 2300RC, The Netherlands
- Department of Public Health and Primary Care, Leiden University Medical Center, Leiden, 2300RC, The Netherlands
| | - Francesco J Conti
- Dubowitz Neuromuscular Centre, Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Christopher H Newton-Cheh
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
- Center for Human Genetic Research and Cardiovascular Research Center, Harvard Medical School and Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Jonathan Rosand
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA, 02114, USA
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
| | - Igor Rudan
- Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, EH8 9AG, UK
| | - Nilesh J Samani
- Department of Cardiovascular Sciences, University of Leicester, Cardiovascular Research Centre, Glenfield Hospital, Leicester, LE3 9QP, UK
- Leicester NIHR Biomedical Research Centre, Glenfield Hospital, Leicester, LE3 9QP, UK
| | - Gianfranco Sinagra
- Cardiovascular Department, Ospedali Riuniti and University of Trieste, 34100, Trieste, Italy
| | - Blair H Smith
- Division of Population Health Sciences, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY, UK
| | - Hilma Holm
- deCODE genetics/Amgen, Inc., 101, Reykjavik, Iceland
| | - Bruno H Stricker
- Department of Epidemiology Erasmus MC - University Medical Center Rotterdam, P.O. Box 2040, Rotterdam, 3000 CA, The Netherlands
| | - Sheila Ulivi
- Institute for Maternal and Child Health - IRCCS "Burlo Garofolo", 34137, Trieste, Italy
| | - Nona Sotoodehnia
- Division of Cardiology, Departments of Medicine and Epidemiology, University of Washington, Seattle, WA, 98101, USA
| | - Suneel S Apte
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, OH, 44195, USA
| | - Pim van der Harst
- University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Durrer Center for Cardiovascular Research, Netherlands Heart Institute, Utrecht, the Netherlands
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Kari Stefansson
- deCODE genetics/Amgen, Inc., 101, Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, 101, Reykjavik, Iceland
| | - Patricia B Munroe
- Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
- NIHR Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Dan E Arking
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Cecilia W Lo
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15201, USA
| | - Yalda Jamshidi
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St George's University of London, London, SW17 0RE, UK.
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St George's University of London, London, UK.
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Abstract
OBJECTIVE Menopausal hot flushes are associated with elevated activity of the sympathetic nervous system and may be related to increased risk for cardiovascular events. Sympathetic activation may trigger severe arrhythmias by modulating cardiac repolarization. The aim of this study was to evaluate the impact of hot flushes on cardiac repolarization in postmenopausal women with and without hot flushes. METHODS We assessed 150 recently postmenopausal healthy women-72 with hot flushes and 78 without hot flushes. They underwent 24-hour electrocardiographic recording, comprising a total of over 10,000,000 QT-interval measurements. The cardiac repolarization was assessed by measuring QT-intervals, heat rate dependence of QT-end intervals, and T-waves. RESULTS The maximal QT-end interval was shorter in women with hot flushes compared with those without hot flushes (481 ± 64 ms vs 493 ± 50 ms; P = 0.046). There were no differences between the rate dependence of QT-end intervals and T-wave measures between the groups. During the night-time hot flush period, we detected a steeper rate-dependence of QT-end intervals and a longer maximal T-peak-T-end interval (117 ± 54 ms vs 111 ± 56 ms; P < 0.001) compared with the control period. CONCLUSIONS Women with hot flushes did not have clinically significant differences in ambulatory cardiac repolarization measurements compared with asymptomatic women. However, a sudden sympathetic surge occurring during the night-time hot flush may have direct effects on cardiac repolarization.
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Auerbach DS, Biton Y, Polonsky B, McNitt S, Gross RA, Dirksen RT, Moss AJ. Risk of cardiac events in Long QT syndrome patients when taking antiseizure medications. Transl Res 2018; 191:81-92.e7. [PMID: 29121487 PMCID: PMC5733703 DOI: 10.1016/j.trsl.2017.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 10/02/2017] [Accepted: 10/07/2017] [Indexed: 12/29/2022]
Abstract
Many antiseizure medications (ASMs) affect ion channel function. We investigated whether ASMs alter the risk of cardiac events in patients with corrected QT (QTc) prolongation. The study included people from the Rochester-based Long QT syndrome (LQTS) Registry with baseline QTc prolongation and history of ASM therapy (n = 296). Using multivariate Anderson-Gill models, we assessed the risk of recurrent cardiac events associated with ASM therapy. We stratified by LQTS genotype and predominant mechanism of ASM action (Na+ channel blocker and gamma-aminobutyric acid modifier.) There was an increased risk of cardiac events when participants with QTc prolongation were taking vs off ASMs (HR 1.65, 95% confidence interval [CI] 1.36-2.00, P < 0.001). There was an increased risk of cardiac events when LQTS2 (HR 1.49, 95% CI 1.03-2.15, P = 0.036) but not LQTS1 participants were taking ASMs (interaction, P = 0.016). Na+ channel blocker ASMs were associated with an increased risk of cardiac events in participants with QTc prolongation, specifically LQTS2, but decreased risk in LQTS1. The increased risk when taking all ASMs and Na+ channel blocker ASMs was attenuated by concurrent beta-adrenergic blocker therapy (interaction, P < 0.001). Gamma-aminobutyric acid modifier ASMs were associated with an increased risk of events in patients not concurrently treated with beta-adrenergic blockers. Female participants were at an increased risk of cardiac events while taking all ASMs and each class of ASMs. Despite no change in overall QTc duration, pharmacogenomic analyses set the stage for future prospective clinical and mechanistic studies to validate that ASMs with predominantly Na+ channel blocking actions are deleterious in LQTS2, but protective in LQTS1.
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Affiliation(s)
- David S Auerbach
- Department of Medicine, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, NY; Department of Pharmacology & Physiology, University of Rochester School of Medicine and Dentistry, Rochester, NY.
| | - Yitschak Biton
- Department of Medicine, Heart Research Follow up Program, University of Rochester School of Medicine and Dentistry, Rochester, NY; Department of Cardiology, Massachusetts General Hospital and Harvard Medical School, Boston, Mass
| | - Bronislava Polonsky
- Department of Medicine, Heart Research Follow up Program, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Scott McNitt
- Department of Medicine, Heart Research Follow up Program, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Robert A Gross
- Department of Pharmacology & Physiology, University of Rochester School of Medicine and Dentistry, Rochester, NY; Department of Neurology, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Robert T Dirksen
- Department of Pharmacology & Physiology, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Arthur J Moss
- Department of Medicine, Heart Research Follow up Program, University of Rochester School of Medicine and Dentistry, Rochester, NY
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Milman A, Andorin A, Gourraud JB, Sacher F, Mabo P, Kim SH, Maeda S, Takahashi Y, Kamakura T, Aiba T, Conte G, Juang JJ, Leshem E, Rahkovich M, Hochstadt A, Mizusawa Y, Postema PG, Arbelo E, Huang Z, Denjoy I, Giustetto C, Wijeyeratne YD, Napolitano C, Michowitz Y, Brugada R, Casado-Arroyo R, Champagne J, Calo L, Sarquella-Brugada G, Tfelt-Hansen J, Priori SG, Takagi M, Veltmann C, Delise P, Corrado D, Behr ER, Gaita F, Yan GX, Brugada J, Leenhardt A, Wilde AA, Brugada P, Kusano KF, Hirao K, Nam GB, Probst V, Belhassen B. Age of First Arrhythmic Event in Brugada Syndrome. Circ Arrhythm Electrophysiol 2017; 10:CIRCEP.117.005222. [DOI: 10.1161/circep.117.005222] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 11/06/2017] [Indexed: 11/16/2022]
Abstract
Background
Data on the age at first arrhythmic event (AE) in Brugada syndrome are from limited patient cohorts. The aim of this study is 2-fold: (1) to define the age at first AE in a large cohort of patients with Brugada syndrome, and (2) to assess the influence of the mode of AE documentation, sex, and ethnicity on the age at first AE.
Methods and Results
A survey of 23 centers from 10 Western and 4 Asian countries gathered data from 678 patients with Brugada syndrome (91.3% men) with first AE documented at time of aborted cardiac arrest (group A, n=426) or after prophylactic implantable cardioverter–defibrillator implantation (group B, n=252). The vast majority (94.2%) of the patients were 16 to 70 years old at the time of AE, whereas pediatric (<16 years) and elderly patients (>70 years) comprised 4.3% and 1.5%, respectively. Peak AE rate occurred between 38 and 48 years (mean, 41.9±14.8; range, 0.27–84 years). Group A patients were younger than in Group B by a mean of 6.7 years (46.1±13.2 versus 39.4±15.0 years;
P
<0.001). In adult patients (≥16 years), women experienced AE 6.5 years later than men (
P
=0.003). Whites and Asians exhibited their AE at the same median age (43 years).
Conclusions
SABRUS (Survey on Arrhythmic Events in Brugada Syndrome) presents the first analysis on the age distribution of AE in Brugada syndrome, suggesting 2 age cutoffs (16 and 70 years) that might be important for decision-making. It also allows gaining insights on the influence of mode of arrhythmia documentation, patient sex, and ethnic origin on the age at AE.
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Affiliation(s)
- Anat Milman
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Antoine Andorin
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Jean-Baptiste Gourraud
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Frederic Sacher
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Philippe Mabo
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Sung-Hwan Kim
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Shingo Maeda
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Yoshihide Takahashi
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Tsukasa Kamakura
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Takeshi Aiba
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Giulio Conte
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Jimmy J.M. Juang
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Eran Leshem
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Michael Rahkovich
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Aviram Hochstadt
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Yuka Mizusawa
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Pieter G. Postema
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Elena Arbelo
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Zhengrong Huang
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Isabelle Denjoy
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Carla Giustetto
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Yanushi D. Wijeyeratne
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Carlo Napolitano
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Yoav Michowitz
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Ramon Brugada
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Ruben Casado-Arroyo
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Jean Champagne
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Leonardo Calo
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Georgia Sarquella-Brugada
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Jacob Tfelt-Hansen
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Silvia G. Priori
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Masahiko Takagi
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Christian Veltmann
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Pietro Delise
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Domenico Corrado
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Elijah R. Behr
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Fiorenzo Gaita
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Gan-Xin Yan
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Josep Brugada
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Antoine Leenhardt
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Arthur A.M. Wilde
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Pedro Brugada
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Kengo F. Kusano
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Kenzo Hirao
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Gi-Byoung Nam
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Vincent Probst
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
| | - Bernard Belhassen
- From the Department of Cardiology, Tel Aviv Medical Center, Tel Aviv University, Israel (A.M., E.L., M.R., Y.M., B.B.); Service de Cardiologie, L’institut du Thorax, CHU de Nantes, France (A.A., J.-B.G., V.P.); INSERM 1045, LIRYC Institute, Bordeaux University Hospital, France (F.S.); Division of Cardiology and Vascular Disease, Rennes University Health Centre, France (P.M.); Division of Cardiology, Department of Internal Medicine, College of Medicine, Catholic University of Korea, Seoul (S.-H.K.)
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Styles K, Sapp J, Gardner M, Gray C, Abdelwahab A, MacIntyre C, Gao D, Al-Harbi M, Doucette S, Theriault C, Parkash R. The influence of sex and age on ventricular arrhythmia in a population-based registry. Int J Cardiol 2017. [DOI: 10.1016/j.ijcard.2017.06.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Hancox JC. A basis for human QT interval prolongation and arrhythmia risk in type 2 diabetes? Exp Physiol 2017; 102:1395-1396. [PMID: 28786529 DOI: 10.1113/ep086618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jules C Hancox
- School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, UK
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Effect of age and gender on the QTc-interval in healthy individuals and patients with long-QT syndrome. Trends Cardiovasc Med 2017; 28:64-75. [PMID: 28869094 DOI: 10.1016/j.tcm.2017.07.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 12/15/2022]
Abstract
Age- and gender-related differences in QTc-interval are most likely the result of changes in sex-specific hormones. Although the exact mechanisms and pathophysiology of sex hormones on the QTc-interval are not known, testosterone appears to shorten the QTc-interval. In females, however, there is a more complex interaction between progesterone and estrogen. In patients with an impaired repolarization, such as long-QT syndrome (LQTS), the effect of these sex hormones on the QTc-interval is more pronounced with a differing sensitivity between the LQTS genotypes.
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40
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Yang PC, Perissinotti LL, López-Redondo F, Wang Y, DeMarco KR, Jeng MT, Vorobyov I, Harvey RD, Kurokawa J, Noskov SY, Clancy CE. A multiscale computational modelling approach predicts mechanisms of female sex risk in the setting of arousal-induced arrhythmias. J Physiol 2017; 595:4695-4723. [PMID: 28516454 PMCID: PMC5509858 DOI: 10.1113/jp273142] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/24/2017] [Indexed: 01/10/2023] Open
Abstract
KEY POINTS This study represents a first step toward predicting mechanisms of sex-based arrhythmias that may lead to important developments in risk stratification and may inform future drug design and screening. We undertook simulations to reveal the conditions (i.e. pacing, drugs, sympathetic stimulation) required for triggering and sustaining reentrant arrhythmias. Using the recently solved cryo-EM structure for the Eag-family channel as a template, we revealed potential interactions of oestrogen with the pore loop hERG mutation (G604S). Molecular models suggest that oestrogen and dofetilide blockade can concur simultaneously in the hERG channel pore. ABSTRACT Female sex is a risk factor for inherited and acquired long-QT associated torsade de pointes (TdP) arrhythmias, and sympathetic discharge is a major factor in triggering TdP in female long-QT syndrome patients. We used a combined experimental and computational approach to predict 'the perfect storm' of hormone concentration, IKr block and sympathetic stimulation that induces arrhythmia in females with inherited and acquired long-QT. More specifically, we developed mathematical models of acquired and inherited long-QT syndrome in male and female ventricular human myocytes by combining effects of a hormone and a hERG blocker, dofetilide, or hERG mutations. These 'male' and 'female' model myocytes and tissues then were used to predict how various sex-based differences underlie arrhythmia risk in the setting of acute sympathetic nervous system discharge. The model predicted increased risk for arrhythmia in females when acute sympathetic nervous system discharge was applied in the settings of both inherited and acquired long-QT syndrome. Females were predicted to have protection from arrhythmia induction when progesterone is high. Males were protected by the presence of testosterone. Structural modelling points towards two plausible and distinct mechanisms of oestrogen action enhancing torsadogenic effects: oestradiol interaction with hERG mutations in the pore loop containing G604 or with common TdP-related blockers in the intra-cavity binding site. Our study presents findings that constitute the first evidence linking structure to function mechanisms underlying female dominance of arousal-induced arrhythmias.
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Affiliation(s)
- Pei-Chi Yang
- Department of Pharmacology, School of Medicine, University of California, Davis, CA, USA
| | - Laura L Perissinotti
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Alberta, Canada
| | - Fernando López-Redondo
- Department of Bio-informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University
| | - Yibo Wang
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Alberta, Canada
| | - Kevin R DeMarco
- Department of Pharmacology, School of Medicine, University of California, Davis, CA, USA
| | - Mao-Tsuen Jeng
- Department of Pharmacology, School of Medicine, University of California, Davis, CA, USA
| | - Igor Vorobyov
- Department of Pharmacology, School of Medicine, University of California, Davis, CA, USA
| | - Robert D Harvey
- Department of Pharmacology, University of Nevada, Reno, NV, USA
| | - Junko Kurokawa
- Department of Bio-informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University.,Department of Bio-informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Sergei Y Noskov
- Centre for Molecular Simulation, Department of Biological Sciences, University of Calgary, Alberta, Canada
| | - Colleen E Clancy
- Department of Pharmacology, School of Medicine, University of California, Davis, CA, USA
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Kalik ZM, Mike JL, Slipski C, Wright M, Jalics JZ, Womble MD. Sex and regional differences in rabbit right ventricular L-type calcium current levels and mathematical modelling of arrhythmia vulnerability. Exp Physiol 2017; 102:804-817. [PMID: 28436171 DOI: 10.1113/ep085977] [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: 07/25/2016] [Accepted: 04/18/2017] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? Regional variations of ventricular L-type calcium current (ICa-L ) amplitude may underlie the increased arrhythmia risk in adult females. Current amplitude variations have been described for the left ventricle but not for the right ventricle. What is the main finding and its importance? Adult female rabbit right ventricular base myocytes exhibit elevated ICa-L compared with female apex or male myocytes. Oestrogen upregulated ICa-L in cultured female myocytes. Mathematical simulations modelling long QT syndrome type 2 demonstrated that elevated ICa-L prolonged action potentials and induced early after-depolarizations. Thus, ventricular arrhythmias in adult females may be associated with an oestrogen-induced upregulation of ICa-L . Previous studies have shown that adult rabbit left ventricular myocytes exhibit sex and regional differences in L-type calcium current (ICa-L ) levels that contribute to increased female susceptibility to arrhythmogenic early after-depolarizations (EADs). We used patch-clamp recordings from isolated adult male and female rabbit right ventricular myocytes to determine apex-base differences in ICa-L density and used mathematical modelling to examine the contribution of ICa-L to EAD formation. Current density measured at 0 mV in female base myocytes was 67% higher than in male base myocytes and 55% higher than in female apex myocytes. No differences were observed between male and female apex myocytes, between male apex and base myocytes, or in the voltage dependences of ICa-L activation or inactivation. The role of oestrogen was investigated using cultured adult female right ventricular base myocytes. After 2 days, 17β-estradiol (1 nm) produced a 65% increase in ICa-L density compared with untreated control myocytes, suggesting an oestrogen-induced upregulation of ICa-L . Action potential simulations using a modified Luo-Rudy cardiomyocyte model showed that increased ICa-L density, at the level observed in female base myocytes, resulted in longer duration action potentials, and when combined with a 50% reduction of the rapidly inactivating delayed rectifier potassium current conductance to model long QT syndrome type 2, the action potential was accompanied by one or more EADs. Thus, we found higher levels of ICa-L in adult female right ventricle base myocytes and the upregulation of this current by oestrogen. Simulations of long QT syndrome type 2 showed that elevated ICa-L contributed to genesis of EADs.
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Affiliation(s)
- Zane M Kalik
- Department of Biological Sciences, Youngstown State University, Youngstown, OH, USA
| | - Joshua L Mike
- Department of Mathematics and Statistics, Youngstown State University, Youngstown, OH, USA
| | - Cassandra Slipski
- Department of Biological Sciences, Youngstown State University, Youngstown, OH, USA
| | - Moriah Wright
- Department of Mathematics and Statistics, Youngstown State University, Youngstown, OH, USA
| | - Jozsi Z Jalics
- Department of Mathematics and Statistics, Youngstown State University, Youngstown, OH, USA
| | - Mark D Womble
- Department of Biological Sciences, Youngstown State University, Youngstown, OH, USA
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42
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Bohnen MS, Peng G, Robey SH, Terrenoire C, Iyer V, Sampson KJ, Kass RS. Molecular Pathophysiology of Congenital Long QT Syndrome. Physiol Rev 2017; 97:89-134. [PMID: 27807201 PMCID: PMC5539372 DOI: 10.1152/physrev.00008.2016] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Ion channels represent the molecular entities that give rise to the cardiac action potential, the fundamental cellular electrical event in the heart. The concerted function of these channels leads to normal cyclical excitation and resultant contraction of cardiac muscle. Research into cardiac ion channel regulation and mutations that underlie disease pathogenesis has greatly enhanced our knowledge of the causes and clinical management of cardiac arrhythmia. Here we review the molecular determinants, pathogenesis, and pharmacology of congenital Long QT Syndrome. We examine mechanisms of dysfunction associated with three critical cardiac currents that comprise the majority of congenital Long QT Syndrome cases: 1) IKs, the slow delayed rectifier current; 2) IKr, the rapid delayed rectifier current; and 3) INa, the voltage-dependent sodium current. Less common subtypes of congenital Long QT Syndrome affect other cardiac ionic currents that contribute to the dynamic nature of cardiac electrophysiology. Through the study of mutations that cause congenital Long QT Syndrome, the scientific community has advanced understanding of ion channel structure-function relationships, physiology, and pharmacological response to clinically employed and experimental pharmacological agents. Our understanding of congenital Long QT Syndrome continues to evolve rapidly and with great benefits: genotype-driven clinical management of the disease has improved patient care as precision medicine becomes even more a reality.
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Affiliation(s)
- M S Bohnen
- Department of Pharmacology, Columbia University Medical Center, New York, New York; and The New York Stem Cell Foundation Research Institute, New York, New York
| | - G Peng
- Department of Pharmacology, Columbia University Medical Center, New York, New York; and The New York Stem Cell Foundation Research Institute, New York, New York
| | - S H Robey
- Department of Pharmacology, Columbia University Medical Center, New York, New York; and The New York Stem Cell Foundation Research Institute, New York, New York
| | - C Terrenoire
- Department of Pharmacology, Columbia University Medical Center, New York, New York; and The New York Stem Cell Foundation Research Institute, New York, New York
| | - V Iyer
- Department of Pharmacology, Columbia University Medical Center, New York, New York; and The New York Stem Cell Foundation Research Institute, New York, New York
| | - K J Sampson
- Department of Pharmacology, Columbia University Medical Center, New York, New York; and The New York Stem Cell Foundation Research Institute, New York, New York
| | - R S Kass
- Department of Pharmacology, Columbia University Medical Center, New York, New York; and The New York Stem Cell Foundation Research Institute, New York, New York
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Tseng WC, Wu MH, Chen HC, Kao FY, Huang SK. Ventricular Fibrillation in a General Population - A National Database Study. Circ J 2016; 80:2310-2316. [PMID: 27725494 DOI: 10.1253/circj.cj-16-0602] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Ventricular fibrillation (VF) is a life-threatening disease that can be remedied by prompt defibrillation. However, data regarding such risk in a general population remain limited. This general population study was to explore the epidemiological profile of VF.Methods and Results:We investigated patients with VF younger than 60 years (average population, 19,725,031) using a national database spanning the period 2000-2010. We identified 3,971 (68.4% male) patients with VF (crude incidence rate: 1.83/100,000). Incidence rates were low in patients younger than 10 years and increased steadily after adolescence. Comorbidities were noted in 2,766 (69.7%) patients, with 2,431 (61%) having cardiac diseases. Over half of the adolescent and young adult patients did not have comorbidities. Among the 838 deaths (mortality rate 21.1%), approximately half (381/838, 45.5%) occurred after arrival at emergency services (ES). The proportion of deaths after arrival at ES relative to total deaths increased sharply to a peak in the 15-19-years age group and thereafter remained stationary. CONCLUSIONS VF patients, with a male dominance, increased after adolescence and were likely to die at presentation to ES. Approximately half of young adults, with high mortality, did not have comorbidities, suggesting underdiagnosis of underlying primary electrical diseases and the need for implementing automated external defibrillator programs. (Circ J 2016; 80: 2310-2316).
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Affiliation(s)
- Wei-Chieh Tseng
- Department of Pediatrics, National Taiwan University Children's Hospital and College of Medicine, National Taiwan University
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Kurokawa J, Kodama M, Clancy CE, Furukawa T. Sex hormonal regulation of cardiac ion channels in drug-induced QT syndromes. Pharmacol Ther 2016; 168:23-28. [PMID: 27595633 DOI: 10.1016/j.pharmthera.2016.09.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Female sex is an independent risk factor for development of torsade de pointes (TdP) arrhythmias not only in congenital long QT syndromes but also in acquired long QT syndromes. Clinical and experimental evidences suggest that the gender differences may be due to, at least in part, gender differences in regulation of rate-corrected QT (QTC) interval between men and women. In adult women, both QTC interval and arrhythmic risks in TdP alter cyclically during menstrual cycle, suggesting a critical role of female sex hormones in cardiac repolarization process. These gender differences in fundamental cardiac electrophysiology result from variable ion channel expression and diverse sex hormonal regulation via long term genomic and acute non-genomic actions, and sex differences in drug responses and metabolisms. In particular, non-genomic actions of testosterone and progesterone on cardiac ion channels are likely to contribute to the gender differences in cardiac repolarization processes. This review summarizes current knowledge on sex hormonal regulation of cardiac ion channels which contribute to cardiac repolarization processes and its implication for gender differences in drug-induced long QT syndromes.
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Affiliation(s)
- Junko Kurokawa
- Department of Bio-Informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan.
| | - Masami Kodama
- Department of Bio-Informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Colleen E Clancy
- Department of Pharmacology, University of California, Davis, Davis, CA, United States
| | - Tetsushi Furukawa
- Department of Bio-Informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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45
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Zhang Y, Colenso CK, El Harchi A, Cheng H, Witchel HJ, Dempsey CE, Hancox JC. Interactions between amiodarone and the hERG potassium channel pore determined with mutagenesis and in silico docking. Biochem Pharmacol 2016; 113:24-35. [PMID: 27256139 PMCID: PMC4959829 DOI: 10.1016/j.bcp.2016.05.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 05/27/2016] [Indexed: 02/04/2023]
Abstract
The antiarrhythmic drug amiodarone delays cardiac repolarisation through inhibition of hERG-encoded potassium channels responsible for the rapid delayed rectifier potassium current (IKr). This study aimed to elucidate molecular determinants of amiodarone binding to the hERG channel. Whole-cell patch-clamp recordings were made at 37 °C of ionic current (IhERG) carried by wild-type (WT) or mutant hERG channels expressed in HEK293 cells. Alanine mutagenesis and ligand docking were used to investigate the roles of pore cavity amino-acid residues in amiodarone binding. Amiodarone inhibited WT outward IhERG tails with a half-maximal inhibitory concentration (IC50) of ∼45 nM, whilst inward IhERG tails in a high K+ external solution ([K+]e) of 94 mM were blocked with an IC50 of 117.8 nM. Amiodarone’s inhibitory action was contingent upon channel gating. Alanine-mutagenesis identified multiple residues directly or indirectly involved in amiodarone binding. The IC50 for the S6 aromatic Y652A mutation was increased to ∼20-fold that of WT IhERG, similar to the pore helical mutant S624A (∼22-fold WT control). The IC50 for F656A mutant IhERG was ∼17-fold its corresponding WT control. Computational docking using a MthK-based hERG model differentiated residues likely to interact directly with drug and those whose Ala mutation may affect drug block allosterically. The requirements for amiodarone block of aromatic residues F656 and Y652 within the hERG pore cavity are smaller than for other high affinity IhERG inhibitors, with relative importance to amiodarone binding of the residues investigated being S624A ∼ Y652A > F656A > V659A > G648A > T623A.
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Affiliation(s)
- Yihong Zhang
- School of Physiology and Pharmacology and Cardiovascular Research Laboratories, Medical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Charlotte K Colenso
- School of Biochemistry, Medical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Aziza El Harchi
- School of Physiology and Pharmacology and Cardiovascular Research Laboratories, Medical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Hongwei Cheng
- School of Physiology and Pharmacology and Cardiovascular Research Laboratories, Medical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Harry J Witchel
- Brighton and Sussex Medical School, University of Sussex, Falmer BN1 9PX, UK
| | - Chris E Dempsey
- School of Biochemistry, Medical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK.
| | - Jules C Hancox
- School of Physiology and Pharmacology and Cardiovascular Research Laboratories, Medical Sciences Building, University of Bristol, University Walk, Bristol BS8 1TD, UK.
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Sieira J, Conte G, Ciconte G, de Asmundis C, Chierchia GB, Baltogiannis G, Di Giovanni G, Saitoh Y, Irfan G, Casado-Arroyo R, Juliá J, La Meir M, Wellens F, Wauters K, Pappaert G, Brugada P. Clinical characterisation and long-term prognosis of women with Brugada syndrome. Heart 2016; 102:452-8. [PMID: 26740482 DOI: 10.1136/heartjnl-2015-308556] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 12/10/2015] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES Brugada syndrome (BS) in women is considered an infrequent condition with a more favourable prognosis than in men. Nevertheless, arrhythmic events and sudden cardiac death (SCD) also occur in this population. Long-term follow-up data of this group are sparse. The purpose of the present study was to investigate the clinical characteristics and long-term prognosis of women with BS. METHODS A consecutive cohort of 228 women presenting with spontaneous or drug-induced Brugada type I ECG at our institution were included and compared with 314 men with the same diagnosis. RESULTS Mean age was 41.5±17.3 years. Clinical presentation was SCD in 6 (2.6%), syncope in 51 (22.4%) and the remaining 171 (75.0%) were asymptomatic. As compared with men, spontaneous type I ECG was less common (7.9% vs 23.2%, p<0.01) and less ventricular arrhythmias were induced during programmed electrical stimulation (5.5% vs 22.3%, p<0.01). An implantable cardioverter defibrillator (ICD) was implanted in 64 women (28.1%). During a mean follow-up of 73.2±56.2 months, seven patients developed arrhythmic events, constituting an event rate of 0.7% per year (as compared with 1.9% per year in men, p=0.02). Presentation as SCD or sinus node dysfunction (SND) was risk factor significantly associated with arrhythmic events (hazard risk (HR) 25.4 and 9.1). CONCLUSION BS is common in women, representing 42% of patients in our database. Clinical presentation is less severe than men, with more asymptomatic status and less spontaneous type I ECG and prognosis is more favourable, with an event rate of 0.7% year. However, women with SCD or previous SND are at higher risk of arrhythmic events.
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Affiliation(s)
- Juan Sieira
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | - Giulio Conte
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | - Giuseppe Ciconte
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | | | | | | | | | - Yukio Saitoh
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | - Ghazala Irfan
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | | | - Justo Juliá
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | - Mark La Meir
- Cardiac Surgery Department, UZ Brussel-VUB, Brussels, Belgium
| | - Francis Wellens
- Cardiac Surgery Department, UZ Brussel-VUB, Brussels, Belgium
| | - Kristel Wauters
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | - Gudrun Pappaert
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
| | - Pedro Brugada
- Heart Rhythm Management Centre, UZ Brussel-VUB, Brussels, Belgium
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47
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Mikkola TS, Tuomikoski P, Lyytinen H, Korhonen P, Hoti F, Vattulainen P, Gissler M, Ylikorkala O. Increased Cardiovascular Mortality Risk in Women Discontinuing Postmenopausal Hormone Therapy. J Clin Endocrinol Metab 2015; 100:4588-94. [PMID: 26414962 DOI: 10.1210/jc.2015-1864] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
CONTEXT Current guidelines recommend annual discontinuation of postmenopausal hormone therapy (HT) to evaluate whether a woman could manage without the treatment. The impact of HT on cardiovascular health has been widely studied, but it is not known how the withdrawal of HT affects cardiovascular risk. OBJECTIVE We evaluated the risk of cardiac or stroke death after the discontinuation of HT. Design, Patients, Interventions, and Main Outcome Measures: Altogether 332 202 Finnish women discontinuing HT between 1994 and 2009 (data from National Reimbursement register) were followed up from the discontinuation date to death due to cardiac cause (n = 3177) or stroke (n = 1952), or to the end of 2009. The deaths, retrieved from the national Cause of Death Register, were compared with the expected number of deaths in the age-standardized background population. In a subanalysis we also compared HT stoppers with HT users. RESULTS Within the first posttreatment year, the risk of cardiac death was significantly elevated (standardized mortality ratio; 95% confidence interval 1.26; 1.16-1.37), whereas follow-up for longer than 1 year was accompanied with a reduction (0.75; 0.72-0.78). The risk of stroke death in the first posttreatment year was increased (1.63; 1.47-1.79), but follow-up for longer than 1 year was accompanied with a reduced risk (0.89; 0.85-0.94). The cardiac (2.30; 2.12-2.50) and stroke (2.52; 2.28-2.77) death risk elevations were even higher when compared with HT users. In women who discontinued HT at age younger than 60 years, but not in women aged 60 years or older, the cardiac mortality risk was elevated (1.94; 1.51-2.48). CONCLUSIONS Increased cardiovascular death risks question the safety of annual HT discontinuation practice to evaluate whether a woman could manage without HT.
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Affiliation(s)
- Tomi S Mikkola
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
| | - Pauliina Tuomikoski
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
| | - Heli Lyytinen
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
| | - Pasi Korhonen
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
| | - Fabian Hoti
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
| | - Pia Vattulainen
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
| | - Mika Gissler
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
| | - Olavi Ylikorkala
- Department of Obstetrics and Gynecology (T.S.M., P.T., O.Y.), Helsinki University Hospital, 00029 Helsinki, Finland; Folkhälsan Research Center (T.S.M.), 00250 Helsinki, Finland; EPID Research Oy (H.L., P.K., F.H., P.V.), 02130 Espoo, Finland; National Institute for Health and Welfare (M.G.), 00271 Helsinki, Finland; and Nordic School of Public Health (M.G.), 40242 Gothenburg, Sweden
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48
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De Martin M, Toja PM, Goulene K, Radaelli P, Cavagnini F, Stramba-Badiale M, Pecori Giraldi F. No Untoward Effect of Long-Term Ketoconazole Administration on Electrocardiographic QT Interval in Patients with Cushing's Disease. Basic Clin Pharmacol Toxicol 2015; 118:279-83. [PMID: 26386326 DOI: 10.1111/bcpt.12490] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 09/01/2015] [Indexed: 02/04/2023]
Abstract
Ketoconazole is listed among drugs that prolong QT interval and may increase the risk of torsade de pointes, a severe ventricular arrhythmia. This compound has recently been approved for treatment of Cushing's syndrome, a severe endocrine disorder. These patients harbour several risk factors for prolonged QT interval, for example hypokalaemia and left ventricular hypertrophy, but no study has evaluated whether administration of ketoconazole affects their QT interval. The aim of this study was to assess the QT interval in patients with Cushing's disease during long-term administration of ketoconazole. Electrocardiograms from 15 patients with Cushing's disease (12 women, 3 men, age: 37.8 ± 2.66 years) on ketoconazole treatment (100 mg-800 mg qd) for 1 month to 12 years were reviewed retrospectively. QT interval was measured and corrected for heart rate (QTc). Measurements before and during ketoconazole treatment were compared and any abnormal QTc value recorded. Concurrent medical therapies were also documented. On average, QTc was superimposable before and during ketoconazole treatment (393.2 ± 7.17 versus 403.3 ± 6.05 msec. in women; 424.3 ± 23.54 versus 398.0 ± 14.93 msec. in men, N.S.). QTc normalized on ketoconazole in one man with prolonged QTc prior to treatment; no abnormal QTc was observed in any other patient during the entire observation period, even during concurrent treatment with other QT-prolonging drugs. In conclusion, long-term ketoconazole administration does not appear to be associated with significant prolongation of QT interval in patients with Cushing's disease. ECG monitoring can follow recommendations drawn for other low-risk QT-prolonging drugs with attention to specific risk factors, for example hypokalaemia and drug interactions.
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Affiliation(s)
- Martina De Martin
- Neuroendocrinology Research Laboratory, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Paola Maria Toja
- Division of Endocrinology and Metabolic Diseases, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Karine Goulene
- Department of Geriatrics and Cardiovascular Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Piero Radaelli
- Neuroendocrinology Research Laboratory, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Francesco Cavagnini
- Neuroendocrinology Research Laboratory, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Marco Stramba-Badiale
- Department of Geriatrics and Cardiovascular Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Francesca Pecori Giraldi
- Neuroendocrinology Research Laboratory, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
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49
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Aydin F, Aktoz M, Altun A, Gursul E, Aksit E. Effects of Gender on Electrocardiography in Subjects with Shortened Ventricular Depolarization (QRS). Ann Noninvasive Electrocardiol 2015; 21:272-9. [PMID: 26332154 DOI: 10.1111/anec.12296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Distinctions between electrocardiograms of female and male subjects have been recognized for many years. Due to these differences, arrhythmias in each gender have a tendency to differ. In our study, we aimed to compare electrocardiography intervals between men and women with short QRS durations. METHODS Subjects with a QRS interval of ≤80 ms were included in the study. Patients were grouped by gender and the parameters were compared. Patients with diseases that might affect QRS interval and/or who were on medications were excluded. The electrocardiogram intervals of the subjects were measured, Holter monitors were placed, and parameters of time-based heart rate variation were analyzed. RESULTS A total of 100 patients (55% female) were included in the study. According to statistical analysis, no significant difference between the genders was observed in the heart rate or in the parameters, such as QT, JT, JTp, and TpTe intervals or heart rate-corrected QTc, JTc, JTpc, and TpTec intervals, which affect repolarization and are known to be arrhythmia precursors by shortening or elongation. No statistically significant difference was found between the two groups for the parameters of heart rate variability time measures (SDNN, SDANN, rMSSD, and pNN50). CONCLUSION We observed that when the QRS interval gets shorter, repolarization differences between the genders disappear. New studies are required on this subject.
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Affiliation(s)
- Fatih Aydin
- Kocaeli State Hospital, Cardiology Department, Kocaeli, Turkey
| | - Meryem Aktoz
- Trakya University Medical Faculty, Cardiology Department, Edirne, Turkey
| | - Armagan Altun
- Baskent University Medical Faculty, Cardiology Department, Istanbul, Turkey
| | - Erdal Gursul
- Biga State Hospital, Cardiology Department, Canakkale, Turkey
| | - Ercan Aksit
- Biga State Hospital, Cardiology Department, Canakkale, Turkey
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50
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Marongiu E, Crisafulli A. Gender differences in cardiovascular functions during exercise: a brief review. SPORT SCIENCES FOR HEALTH 2015. [DOI: 10.1007/s11332-015-0237-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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