1
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Peltenburg PJ, Gibson H, Wilde AAM, van der Werf C, Clur SAB, Blom NA. Prognosis and clinical management of asymptomatic family members with RYR2-mediated catecholaminergic polymorphic ventricular tachycardia: a review. Cardiol Young 2024:1-8. [PMID: 38653721 DOI: 10.1017/s1047951124000714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Despite its low prevalence, the potential diagnosis of catecholaminergic polymorphic ventricular tachycardia (CPVT) should be at the forefront of a paediatric cardiologists mind in children with syncope during exercise or emotions. Over the years, the number of children with a genetic diagnosis of CPVT due to a (likely) pathogenic RYR2 variant early in life and prior to the onset of symptoms has increased due to cascade screening programmes. Limited guidance for this group of patients is currently available. Therefore, we aimed to summarise currently available literature for asymptomatic patients with a (likely) pathogenic RYR2 variant, particularly the history of CPVT and its genetic architecture, the currently available diagnostic tests and their limitations, and the development of a CPVT phenotype - both electrocardiographically and symptomatic - of affected family members. Their risk of arrhythmic events is presumably low and a phenotype seems to develop in the first two decades of life. Future research should focus on this group in particular, to better understand the development of a phenotype over time, and therefore, to be able to better guide clinical management - including the frequency of diagnostic tests, the timing of the initiation of drug therapy, and lifestyle recommendations.
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Affiliation(s)
- Puck J Peltenburg
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam, UMC, University of Amsterdam, Heart Centre, Amsterdam, The Netherlands
- Department of Pediatric Cardiology, Amsterdam UMC, University of Amsterdam, Emma Children's Hospital, Amsterdam, The Netherlands
| | - Harry Gibson
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam, UMC, University of Amsterdam, Heart Centre, Amsterdam, The Netherlands
| | - Arthur A M Wilde
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam, UMC, University of Amsterdam, Heart Centre, Amsterdam, The Netherlands
| | - Christian van der Werf
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam, UMC, University of Amsterdam, Heart Centre, Amsterdam, The Netherlands
| | - Sally-Ann B Clur
- Department of Pediatric Cardiology, Amsterdam UMC, University of Amsterdam, Emma Children's Hospital, Amsterdam, The Netherlands
| | - Nico A Blom
- Department of Pediatric Cardiology, Amsterdam UMC, University of Amsterdam, Emma Children's Hospital, Amsterdam, The Netherlands
- Department of Pediatric Cardiology, Willem-Alexander Children's Hospital, Leiden University Medical Centre, Leiden, The Netherlands
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2
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Gandon-Renard M, Val-Blasco A, Oughlis C, Gerbaud P, Lefebvre F, Gomez S, Journé C, Courilleau D, Mercier-Nomé F, Pereira L, Benitah JP, Gómez AM, Mercadier JJ. Dual effect of cardiac FKBP12.6 overexpression on excitation-contraction coupling and the incidence of ventricular arrhythmia depending on its expression level. J Mol Cell Cardiol 2024; 188:15-29. [PMID: 38224852 DOI: 10.1016/j.yjmcc.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 12/27/2023] [Accepted: 01/11/2024] [Indexed: 01/17/2024]
Abstract
FKBP12.6, a binding protein to the immunosuppressant FK506, which also binds the ryanodine receptor (RyR2) in the heart, has been proposed to regulate RyR2 function and to have antiarrhythmic properties. However, the level of FKBP12.6 expression in normal hearts remains elusive and some controversies still persist regarding its effects, both in basal conditions and during β-adrenergic stimulation. We quantified FKBP12.6 in the left ventricles (LV) of WT (wild-type) mice and in two novel transgenic models expressing distinct levels of FKBP12.6, using a custom-made specific anti-FKBP12.6 antibody and a recombinant protein. FKBP12.6 level in WT LV was very low (0.16 ± 0.02 nmol/g of LV), indicating that <15% RyR2 monomers are bound to the protein. Mice with 14.1 ± 0.2 nmol of FKBP12.6 per g of LV (TG1) had mild cardiac hypertrophy and normal function and were protected against epinephrine/caffeine-evoked arrhythmias. The ventricular myocytes showed higher [Ca2+]i transient amplitudes than WT myocytes and normal SR-Ca2+ load, while fewer myocytes showed Ca2+ sparks. TG1 cardiomyocytes responded to 50 nM Isoproterenol increasing these [Ca2+]i parameters and producing RyR2-Ser2808 phosphorylation. Mice with more than twice the TG1 FKBP12.6 value (TG2) showed marked cardiac hypertrophy with calcineurin activation and more arrhythmias than WT mice during β-adrenergic stimulation, challenging the protective potential of high FKBP12.6. RyR2R420Q CPVT mice overexpressing FKBP12.6 showed fewer proarrhythmic events and decreased incidence and duration of stress-induced bidirectional ventricular tachycardia. Our study, therefore, quantifies for the first time endogenous FKBP12.6 in the mouse heart, questioning its physiological relevance, at least at rest due its low level. By contrast, our work demonstrates that with caution FKBP12.6 remains an interesting target for the development of new antiarrhythmic therapies.
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Affiliation(s)
- Marine Gandon-Renard
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Almudena Val-Blasco
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Célia Oughlis
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Pascale Gerbaud
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Florence Lefebvre
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Susana Gomez
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Clément Journé
- Fédération de Recherche en Imagerie Multimodale (FRIM), Université Paris Cité, 75018 Paris, France
| | | | - Françoise Mercier-Nomé
- UMS-IPSIT, Université Paris-Saclay, 91400 Orsay, France; Inflammation, Microbiome and Immunosurveillance, Inserm UMR-996, Université Paris-Saclay, 92140 Clamart, France
| | - Laetitia Pereira
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Jean-Pierre Benitah
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France
| | - Ana Maria Gómez
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France.
| | - Jean-Jacques Mercadier
- Signalling and Cardiovascular Pathophysiology, Inserm UMR-S 1180, Université Paris-Saclay, 91400 Orsay, France; Université Paris Cité, Paris, France.
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3
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Lopez R, Janicek R, Fernandez-Tenorio M, Courtehoux M, Matas L, Gerbaud P, Gomez AM, Egger M, Niggli E. Uptake-leak balance of SR Ca2+ determines arrhythmogenic potential of RyR2R420Q+/− cardiomyocytes. J Mol Cell Cardiol 2022; 170:1-14. [DOI: 10.1016/j.yjmcc.2022.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 04/01/2022] [Accepted: 05/22/2022] [Indexed: 11/25/2022]
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4
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Abstract
Migraine is a complex genetic brain disorder with an intricate pathogenesis and polymorphous clinical presentations, particularly in children. In this Perspective, we describe the different phenotypes of migraine in children, including conditions that have been referred to in the International Classification of Headache Disorders as "syndromes that may be related to migraine''. Evidence is presented for the integration of abdominal migraine, cyclical vomiting syndrome, benign paroxysmal vertigo, benign paroxysmal torticollis and infantile colic into the unified diagnosis of 'childhood migraine syndrome' on the basis of clinical and epidemiological characteristics, and shared inheritance. In our opinion, such integration will guide clinicians from specialities other than neurology to consider migraine in the assessment of children with these disorders, as well as stimulate research into the genetics, pathophysiology and clinical features of all disorders within the syndrome. A diagnosis of childhood migraine syndrome would also enable patients to benefit from inclusion in clinical trials of old and new migraine treatments, thus potentially increasing the number of treatment options available.
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5
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Yin L, Zahradnikova A, Rizzetto R, Boncompagni S, Rabesahala de Meritens C, Zhang Y, Joanne P, Marqués-Sulé E, Aguilar-Sánchez Y, Fernández-Tenorio M, Villejoubert O, Li L, Wang YY, Mateo P, Nicolas V, Gerbaud P, Lai FA, Perrier R, Álvarez JL, Niggli E, Valdivia HH, Valdivia CR, Ramos-Franco J, Zorio E, Zissimopoulos S, Protasi F, Benitah JP, Gómez AM. Impaired Binding to Junctophilin-2 and Nanostructural Alteration in CPVT Mutation. Circ Res 2021; 129:e35-e52. [PMID: 34111951 DOI: 10.1161/circresaha.121.319094] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Liheng Yin
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Alexandra Zahradnikova
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Riccardo Rizzetto
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Simona Boncompagni
- CAST, Department of Neuroscience, Imaging and Clinical Sciences (DNICS), Medicine and Ageing Sciences (DMSI), University Gabriele d'Annunzio, Chieti, Italy (S.B., F.P.)
| | | | - Yadan Zhang
- Swansea University Medical School, Institute of Life Science, Swansea, SA2 8PP, UK (C.R.d.M., Y.Z., S.Z.)
| | - Pierre Joanne
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Elena Marqués-Sulé
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.).,Physiotherapy, University of Valencia, Valencia, Spain (E.M.-S.)
| | - Yuriana Aguilar-Sánchez
- Physiology and Biophysics, Rush University Medical Center, Chicago, IL, USA (Y.A.-S., J.R.-F.)
| | | | - Olivier Villejoubert
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Linwei Li
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Yue Yi Wang
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Philippe Mateo
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | | | - Pascale Gerbaud
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - F Anthony Lai
- College of Medicine, Biomedical & Pharmaceutical Research Unit, QU Health, & Biomedical Research Centre, Qatar University, Doha, Qatar (F.A.L.)
| | | | - Julio L Álvarez
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.).,Institute of Cardiology, Havana, Cuba (J.L.A.)
| | - Ernst Niggli
- Physiology, University of Bern, Bern, Switzerland (M.F.-T., E.N.)
| | - Héctor H Valdivia
- Medicine and Cardiovascular Research Center, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin (H.H.V., C.R.V.)
| | - Carmen R Valdivia
- Medicine and Cardiovascular Research Center, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin (H.H.V., C.R.V.)
| | - Josefina Ramos-Franco
- Physiology and Biophysics, Rush University Medical Center, Chicago, IL, USA (Y.A.-S., J.R.-F.)
| | - Esther Zorio
- Cardiology Department and Unidad de Cardiopatías Familiares, Muerte Súbita y Mecanismos de Enfermedad (CaFaMuSMe), Hospital Universitario y Politécnico La Fe and Instituto de Investigación Sanitaria La Fe, Valencia, Spain (E.Z.).,Center for Biomedical Network Research on Cardiovascular diseases (CIBERCV), Madrid, Spain (E.Z.)
| | - Spyros Zissimopoulos
- Swansea University Medical School, Institute of Life Science, Swansea, SA2 8PP, UK (C.R.d.M., Y.Z., S.Z.)
| | - Feliciano Protasi
- CAST, Department of Neuroscience, Imaging and Clinical Sciences (DNICS), Medicine and Ageing Sciences (DMSI), University Gabriele d'Annunzio, Chieti, Italy (S.B., F.P.)
| | - Jean-Pierre Benitah
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
| | - Ana M Gómez
- Signaling and Cardiovascular Pathophysiology - UMR-S 1180, Inserm, Université Paris-Saclay 92296 Châtenay-Malabry, France (L.Y., A.Z., R.R., P.J., E.M.-S., O.V., L.L., Y.Y.W., P.M., P.G., R.P., J.L.A., J.-P.B., A.M.G.)
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6
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Stępień-Wojno M, Ponińska J, Biernacka EK, Foss-Nieradko B, Chwyczko T, Syska P, Płoski R, Bilińska ZT. A Recurrent Exertional Syncope and Sudden Cardiac Arrest in a Young Athlete with Known Pathogenic p.Arg420Gln Variant in the RYR2 Gene. Diagnostics (Basel) 2020; 10:diagnostics10070435. [PMID: 32605058 PMCID: PMC7399804 DOI: 10.3390/diagnostics10070435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/17/2020] [Accepted: 06/25/2020] [Indexed: 11/16/2022] Open
Abstract
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is one of causes of sudden cardiac death in the young, especially in athletes. Diagnosis of CPVT may be difficult since all cardiological examinations performed at rest are usually normal, and exercise stress test-induced ventricular tachycardia is not commonly present. The identification of a pathogenic mutation in RYR2 or CASQ2 is diagnostic in CPVT. We report on a 20-year-old athlete who survived two sudden cardiac arrests during swimming. Moreover, he suffered repeated syncopal spells on exercise. The diagnosis was made only following genetic testing using a multi-gene panel, and the p.Arg420Gln RYR2 variant was identified. We present diagnostic and therapeutic issues in this young athlete with CPVT.
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Affiliation(s)
- Małgorzata Stępień-Wojno
- Unit for Screening Studies in Inherited Cardiovascular Diseases, National Institute of Cardiology, 04-628 Warsaw, Poland; (M.S.-W.); (B.F.-N.)
| | - Joanna Ponińska
- Department of Medical Biology, National Institute of Cardiology, 04-628 Warsaw, Poland;
| | - Elżbieta K. Biernacka
- Department of Congenital Heart Diseases, National Institute of Cardiology, 04-628 Warsaw, Poland;
| | - Bogna Foss-Nieradko
- Unit for Screening Studies in Inherited Cardiovascular Diseases, National Institute of Cardiology, 04-628 Warsaw, Poland; (M.S.-W.); (B.F.-N.)
| | - Tomasz Chwyczko
- Department of Coronary Artery Disease and Cardiac Rehabilitation, National Institute of Cardiology, 04-628 Warsaw, Poland;
| | - Piotr Syska
- 2nd Department of Arrhythmia, National Institute of Cardiology, 04-628 Warsaw, Poland;
| | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland;
| | - Zofia T. Bilińska
- Unit for Screening Studies in Inherited Cardiovascular Diseases, National Institute of Cardiology, 04-628 Warsaw, Poland; (M.S.-W.); (B.F.-N.)
- Correspondence:
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7
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Faltinova A, Tomaskova N, Antalik M, Sevcik J, Zahradnikova A. The N-Terminal Region of the Ryanodine Receptor Affects Channel Activation. Front Physiol 2017; 8:443. [PMID: 28713282 PMCID: PMC5492033 DOI: 10.3389/fphys.2017.00443] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 06/12/2017] [Indexed: 11/29/2022] Open
Abstract
Mutations in the cardiac ryanodine receptor (RyR2), the ion channel responsible for release of calcium ions from intracellular stores into cytoplasm, are the cause of several inherited cardiac arrhythmias. At the molecular level, disease symptoms can be mimicked by domain peptides from mutation-prone regions of RyR2 that bind to RyR2 and activate it. Here we show that the domain peptide DPcpvtN2, corresponding to the central helix of the N-terminal region of RyR2, activates the RyR2 channel. Structural modeling of interaction between DPcpvtN2 and the N-terminal region of RyR2 in the closed and open conformation provided three plausible structures of the complex. Only one of them could explain the dependence of RyR2 activity on concentration of DPcpvtN2. The structure of the complex was at odds with the previously proposed “domain switch” mechanism of competition between domain peptides and ryanodine receptor domains. Likewise, in structural models of the N-terminal region, the conformational changes induced by DPcpvtN2 binding were different from those induced by mutation of central helix amino acids. The activating effect of DPcpvtN2 binding and of mutations in the central helix could be explained by their similar effect on the transition energy between the closed and open conformation of RyR2.
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Affiliation(s)
- Andrea Faltinova
- Department of Muscle Cell Research, Institute of Molecular Physiology and Genetics of the Centre of Biosciences, Slovak Academy of SciencesBratislava, Slovakia.,Department of Biochemistry and Structural Biology, Institute of Molecular Biology, Slovak Academy of SciencesBratislava, Slovakia
| | - Nataša Tomaskova
- Faculty of Science, Institute of Chemical Sciences, Pavol Jozef Šafárik UniversityKošice, Slovakia
| | - Marián Antalik
- Faculty of Science, Institute of Chemical Sciences, Pavol Jozef Šafárik UniversityKošice, Slovakia
| | - Jozef Sevcik
- Department of Biochemistry and Structural Biology, Institute of Molecular Biology, Slovak Academy of SciencesBratislava, Slovakia
| | - Alexandra Zahradnikova
- Department of Muscle Cell Research, Institute of Molecular Physiology and Genetics of the Centre of Biosciences, Slovak Academy of SciencesBratislava, Slovakia.,Department of Biochemistry and Structural Biology, Institute of Molecular Biology, Slovak Academy of SciencesBratislava, Slovakia
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8
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Wang YY, Mesirca P, Marqués-Sulé E, Zahradnikova A, Villejoubert O, D'Ocon P, Ruiz C, Domingo D, Zorio E, Mangoni ME, Benitah JP, Gómez AM. RyR2R420Q catecholaminergic polymorphic ventricular tachycardia mutation induces bradycardia by disturbing the coupled clock pacemaker mechanism. JCI Insight 2017; 2:91872. [PMID: 28422759 DOI: 10.1172/jci.insight.91872] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/09/2017] [Indexed: 01/14/2023] Open
Abstract
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a lethal genetic arrhythmia that manifests syncope or sudden death in children and young adults under stress conditions. CPVT patients often present bradycardia and sino-atrial node (SAN) dysfunction. However, the mechanism remains unclear. We analyzed SAN function in two CPVT families and in a novel knock-in (KI) mouse model carrying the RyR2R420Q mutation. Humans and KI mice presented slower resting heart rate. Accordingly, the rate of spontaneous intracellular Ca2+ ([Ca2+]i) transients was slower in KI mouse SAN preparations than in WT, without any significant alteration in the "funny" current (If ). The L-type Ca2+ current was reduced in KI SAN cells in a [Ca2+]i-dependent way, suggesting that bradycardia was due to disrupted crosstalk between the "voltage" and "Ca2+" clock, and the mechanisms of pacemaking was induced by aberrant spontaneous RyR2- dependent Ca2+ release. This finding was consistent with a higher Ca2+ leak during diastolic periods produced by long-lasting Ca2+ sparks in KI SAN cells. Our results uncover a mechanism for the CPVT-causing RyR2 N-terminal mutation R420Q, and they highlight the fact that enhancing the Ca2+ clock may slow the heart rhythm by disturbing the coupling between Ca2+ and voltage clocks.
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Affiliation(s)
- Yue Yi Wang
- UMR-S 1180, Inserm, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Pietro Mesirca
- UMR-5203, CNRS, INSERM U1191, Institut de Génomique Fonctionnelle, Département de Physiologie, Université de Montpellier, Montpellier, France
| | - Elena Marqués-Sulé
- UMR-S 1180, Inserm, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France.,Physiotherapy Department
| | - Alexandra Zahradnikova
- UMR-S 1180, Inserm, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Olivier Villejoubert
- UMR-S 1180, Inserm, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Pilar D'Ocon
- ERI BIOTECMED and Department of Pharmacology School, University of Valencia, Valencia, Spain
| | | | - Diana Domingo
- Cardiology Department, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Esther Zorio
- Cardiology Department, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Matteo E Mangoni
- UMR-5203, CNRS, INSERM U1191, Institut de Génomique Fonctionnelle, Département de Physiologie, Université de Montpellier, Montpellier, France
| | - Jean-Pierre Benitah
- UMR-S 1180, Inserm, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Ana María Gómez
- UMR-S 1180, Inserm, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
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9
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SHIRAI YASUHIRO, GOYA MASAHIKO, OHNO SEIKO, HORIE MINORU, DOI SHOZABURO, ISOBE MITSUAKI, HIRAO KENZO. Elimination of Ventricular Arrhythmia in Catecholaminergic Polymorphic Ventricular Tachycardia by Targeting “Catecholamine-Sensitive Area”: A Dominant-Subordinate Relationship between Origin Sites of Bidirectional Ventricular Premature Contractions. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2017; 40:600-604. [DOI: 10.1111/pace.13006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 11/14/2016] [Accepted: 12/04/2016] [Indexed: 11/28/2022]
Affiliation(s)
- YASUHIRO SHIRAI
- Heart Rhythm Center; Tokyo Medical and Dental University Hospital; Tokyo Japan
| | - MASAHIKO GOYA
- Heart Rhythm Center; Tokyo Medical and Dental University Hospital; Tokyo Japan
| | - SEIKO OHNO
- Department of Cardiovascular and Respiratory Medicine; Shiga University of Medical Science; Shiga Japan
| | - MINORU HORIE
- Department of Cardiovascular and Respiratory Medicine; Shiga University of Medical Science; Shiga Japan
| | - SHOZABURO DOI
- Department of Pediatrics; Tokyo Medical and Dental University; Tokyo Japan
| | - MITSUAKI ISOBE
- Department of Cardiovascular Medicine; Tokyo Medical and Dental University; Tokyo Japan
| | - KENZO HIRAO
- Heart Rhythm Center; Tokyo Medical and Dental University Hospital; Tokyo Japan
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10
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Sensibilidad y valor predictivo negativo de la ergometría para el diagnóstico de la taquicardia ventricular polimórfica catecolaminérgica. Rev Esp Cardiol 2015. [DOI: 10.1016/j.recesp.2015.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Ruiz Hernández PM, Wangüemert Pérez F. Sensitivity and negative predictive value of treadmill exercise stress testing for the diagnosis of catecholaminergic polymorphic ventricular tachycardia. REVISTA ESPANOLA DE CARDIOLOGIA (ENGLISH ED.) 2015; 68:545-546. [PMID: 25907858 DOI: 10.1016/j.rec.2015.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 02/03/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Pablo M Ruiz Hernández
- Área de Cardiopatías Familiares, Cardiavant, Centro Médico Cardiológico, Las Palmas de Gran Canaria, Spain.
| | - Fernando Wangüemert Pérez
- Área de Cardiopatías Familiares, Cardiavant, Centro Médico Cardiológico, Las Palmas de Gran Canaria, Spain
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12
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Domingo D, López-Vilella R, Arnau MÁ, Zorio E. Sensitivity and negative predictive value of treadmill exercise stress testing for the diagnosis of catecholaminergic polymorphic ventricular tachycardia. Response. REVISTA ESPANOLA DE CARDIOLOGIA (ENGLISH ED.) 2015; 68:546-547. [PMID: 25936659 DOI: 10.1016/j.rec.2015.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 02/24/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Diana Domingo
- Servicio de Cardiología, Hospital Universitario y Politécnico La Fe, Valencia, Spain; Instituto de Investigación Sanitaria La Fe, Valencia, Spain; Departamento de Medicina, Universidad de Valencia, Valencia, Spain
| | - Raquel López-Vilella
- Servicio de Cardiología, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Miguel Á Arnau
- Servicio de Cardiología, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Esther Zorio
- Servicio de Cardiología, Hospital Universitario y Politécnico La Fe, Valencia, Spain.
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13
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Domingo D, López-Vilella R, Arnau MÁ, Zorio E. Sensibilidad y valor predictivo negativo de la ergometría para el diagnóstico de la taquicardia ventricular polimórfica catecolaminérgica. Respuesta. Rev Esp Cardiol (Engl Ed) 2015. [DOI: 10.1016/j.recesp.2015.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Una nueva mutación en el gen del receptor de la rianodina (RyR2 C2277R) como causa de taquicardia ventricular polimórfica catecolaminérgica. Rev Esp Cardiol 2015. [DOI: 10.1016/j.recesp.2014.07.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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A new mutation in the ryanodine receptor 2 gene (RYR2 C2277R) as a cause catecholaminergic polymorphic ventricular tachycardia. ACTA ACUST UNITED AC 2014; 68:71-3. [PMID: 25435091 DOI: 10.1016/j.rec.2014.07.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 07/22/2014] [Indexed: 11/23/2022]
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