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Beach CM, Vinocur JM. Doubly unusual in double discordance: Appendage-based accessory pathway in congenitally corrected transposition. HeartRhythm Case Rep 2024; 10:180-181. [PMID: 38496739 PMCID: PMC10943534 DOI: 10.1016/j.hrcr.2023.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024] Open
Affiliation(s)
- Cheyenne M. Beach
- Division of Pediatric Cardiology, Yale University School of Medicine, New Haven, Connecticut
| | - Jeffrey M. Vinocur
- Division of Pediatric Cardiology, Yale University School of Medicine, New Haven, Connecticut
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Gakenheimer-Smith L, Ou Z, Kuang J, Moore JP, Burrows A, Kovach J, Dechert B, Beach CM, Ayers M, Tan RB, Mostafavifar M, Mah DY, Conner TM, Turpin S, Avasarala K, Shah MJ, Webster G, Posey J, Etheridge SP, Binka E, Niu M, Asaki SY, Lambert LM, Pilcher TA. Multicenter retrospective evaluation of magnetic resonance imaging in pediatric and congenital heart disease patients with cardiac implantable electronic devices. Heart Rhythm 2023; 20:1752-1758. [PMID: 37648183 DOI: 10.1016/j.hrthm.2023.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/04/2023] [Accepted: 08/23/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Guidelines addressing magnetic resonance imaging (MRI) in patients with cardiac implantable electronic devices (CIEDs) provide algorithms for imaging pediatric and congenital heart disease (CHD) patients. Guideline acceptance varies by institution. Guidelines also do not support routine MRI scans in patients with epicardial or abandoned leads, common in pediatric and CHD patients. OBJECTIVE The purpose of this study was to determine the incidence of MRI-related complications in pediatric and CHD patients with CIEDs, including epicardial and/or abandoned leads. METHODS A multicenter retrospective review included patients with CIEDs who underwent any MRI between 2007 and 2022 at congenital cardiac centers. The primary outcome was any patient adverse event or clinically significant CIED change after MRI, defined as pacing lead capture threshold increase >0.5 V with output change, P- or R- wave amplitude decrease >50% with sensitivity change, or impedance change >50%. RESULTS Across 14 institutions, 314 patients (median age 18.8 [1.3; 31.4] years) underwent 389 MRIs. There were 288 pacemakers (74%) and 87 implantable cardioverter-defibrillators (22%); 52% contained epicardial leads, and 14 (4%) were abandoned leads only. Symptoms or CIED changes occurred in 4.9% of MRI scans (6.1% of patients). On 9 occasions (2%), warmth or pain occurred. Pacing capture threshold or lead impedance changes occurred in 1.4% and 2.0% of CIEDs post-MRI and at follow-up. CONCLUSION Our data provide evidence that MRIs can be performed in pediatric and CHD patients with CIEDs, including non-MRI-conditional CIEDs and epicardial and/or abandoned leads, with rare minor symptoms or CIED changes but no other complications.
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Affiliation(s)
- Lindsey Gakenheimer-Smith
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah.
| | - Zhining Ou
- Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Jinqiu Kuang
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Jeremy P Moore
- Division of Cardiology, Department of Pediatrics, UCLA Medical Center, Los Angeles, California
| | - Austin Burrows
- Division of Cardiology, Department of Pediatrics, UCLA Medical Center, Los Angeles, California
| | - Joshua Kovach
- Department of Pediatrics, Division of Pediatric Cardiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Brynn Dechert
- Division of Pediatric Cardiology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
| | | | - Mark Ayers
- Division of Pediatric Cardiology, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana
| | - Reina Bianca Tan
- Division of Pediatric Cardiology, Department of Pediatrics, NYU Grossman School of Medicine, New York, New York
| | | | - Douglas Y Mah
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Tracy Marrs Conner
- Division of Pediatric Cardiology, Washington University in St. Louis, St. Louis, Missouri
| | - Susan Turpin
- UCSF Benioff Children's Hospital, Oakland, California
| | | | - Maully J Shah
- Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Gregory Webster
- Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago, Illinois
| | - Jessica Posey
- Children's Healthcare of Atlanta Cardiology, Atlanta, Georgia
| | - Susan P Etheridge
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Edem Binka
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Mary Niu
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - S Yukiko Asaki
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Linda M Lambert
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Thomas A Pilcher
- Division of Pediatric Cardiology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
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Beach CM, Richardson C, Paul T. The Evolving Role of Insertable Cardiac Monitors in Patients with Congenital Heart Disease. Card Electrophysiol Clin 2023; 15:413-420. [PMID: 37865515 DOI: 10.1016/j.ccep.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2023]
Abstract
Insertable cardiac monitors (ICMs) have been used more frequently and in a wider variety of circumstances in recent years. ICMs are used for symptom-rhythm correlation when patients have potentially arrhythmogenic syncope and for less traditional reasons such as rhythm surveillance in patients with genetic arrhythmia syndromes or other diseases with high arrhythmia risk. ICMs have good diagnostic yield in pediatric patients and in adults with congenital heart disease and have a low rate of complications. Implantation techniques should take patient-specific factors into account to optimize diagnostic yield and minimize risk.
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Affiliation(s)
- Cheyenne M Beach
- Section of Pediatric Cardiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520, USA.
| | - Chalese Richardson
- Zucker School of Medicine at Hofstra, The Cohen Children's Heart Center, Northwell Health Physician Partners, 1111 Marcus Avenue, Suite M15, New Hyde Park, NY 11042, USA
| | - Thomas Paul
- Department of Pediatric Cardiology, Intensive Care Medicine and Neonatology, Georg August University Medical Center, Robert-Koch-Str. 40, Göttingen D-37075, Germany
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Beach CM, Shah MJ. Advances in Cardiac Implantable Electronic Devices and Congenital Heart Disease. Card Electrophysiol Clin 2023; 15:xv-xvi. [PMID: 37865527 DOI: 10.1016/j.ccep.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2023]
Affiliation(s)
- Cheyenne M Beach
- Department of Pediatrics, Section of Pediatric Cardiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520, USA.
| | - Maully J Shah
- The Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, 3401 Civic Center Boulevard, Philadelphia, PA 19104, USA.
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Crotti L, Spazzolini C, Nyegaard M, Overgaard MT, Kotta MC, Dagradi F, Sala L, Aiba T, Ayers MD, Baban A, Barc J, Beach CM, Behr ER, Bos JM, Cerrone M, Covi P, Cuneo B, Denjoy I, Donner B, Elbert A, Eliasson H, Etheridge SP, Fukuyama M, Girolami F, Hamilton R, Horie M, Iascone M, Jaimez JJ, Jensen HK, Kannankeril PJ, Kaski JP, Makita N, Muñoz-Esparza C, Odland HH, Ohno S, Papagiannis J, Porretta AP, Prandstetter C, Probst V, Robyns T, Rosenthal E, Rosés-Noguer F, Sekarski N, Singh A, Spentzou G, Stute F, Tfelt-Hansen J, Till J, Tobert KE, Vinocur JM, Webster G, Wilde AAM, Wolf CM, Ackerman MJ, Schwartz PJ. Clinical presentation of calmodulin mutations: the International Calmodulinopathy Registry. Eur Heart J 2023; 44:3357-3370. [PMID: 37528649 PMCID: PMC10499544 DOI: 10.1093/eurheartj/ehad418] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/14/2023] [Accepted: 06/13/2023] [Indexed: 08/03/2023] Open
Abstract
AIMS Calmodulinopathy due to mutations in any of the three CALM genes (CALM1-3) causes life-threatening arrhythmia syndromes, especially in young individuals. The International Calmodulinopathy Registry (ICalmR) aims to define and link the increasing complexity of the clinical presentation to the underlying molecular mechanisms. METHODS AND RESULTS The ICalmR is an international, collaborative, observational study, assembling and analysing clinical and genetic data on CALM-positive patients. The ICalmR has enrolled 140 subjects (median age 10.8 years [interquartile range 5-19]), 97 index cases and 43 family members. CALM-LQTS and CALM-CPVT are the prevalent phenotypes. Primary neurological manifestations, unrelated to post-anoxic sequelae, manifested in 20 patients. Calmodulinopathy remains associated with a high arrhythmic event rate (symptomatic patients, n = 103, 74%). However, compared with the original 2019 cohort, there was a reduced frequency and severity of all cardiac events (61% vs. 85%; P = .001) and sudden death (9% vs. 27%; P = .008). Data on therapy do not allow definitive recommendations. Cardiac structural abnormalities, either cardiomyopathy or congenital heart defects, are present in 30% of patients, mainly CALM-LQTS, and lethal cases of heart failure have occurred. The number of familial cases and of families with strikingly different phenotypes is increasing. CONCLUSION Calmodulinopathy has pleiotropic presentations, from channelopathy to syndromic forms. Clinical severity ranges from the early onset of life-threatening arrhythmias to the absence of symptoms, and the percentage of milder and familial forms is increasing. There are no hard data to guide therapy, and current management includes pharmacological and surgical antiadrenergic interventions with sodium channel blockers often accompanied by an implantable cardioverter-defibrillator.
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Affiliation(s)
- Lia Crotti
- Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo 22, 20135 Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo, 1, 20126 Milan, Italy
| | - Carla Spazzolini
- Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo 22, 20135 Milan, Italy
| | - Mette Nyegaard
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Michael T Overgaard
- Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark
| | - Maria-Christina Kotta
- Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo 22, 20135 Milan, Italy
| | - Federica Dagradi
- Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo 22, 20135 Milan, Italy
| | - Luca Sala
- Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo 22, 20135 Milan, Italy
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Takeshi Aiba
- Division of Arrhythmia, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Mark D Ayers
- Department of Pediatrics, Division of Pediatric Cardiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Anwar Baban
- Member of the European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart
- Pediatric Cardiology and Arrhythmia/Syncope Units, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Julien Barc
- Université de Nantes, CHU Nantes, CNRS, INSERM, L’institut du Thorax, Nantes, France
| | - Cheyenne M Beach
- Pediatric Cardiology, Yale School of Medicine, New Haven, CT, USA
| | - Elijah R Behr
- Cardiology Section, Institute of Molecular and Clinical Sciences, St George’s University of London and Cardiovascular Clinical Academic Group, St George’s University Hospitals NHS Foundation Trust, UK
| | - J Martijn Bos
- Departments of Cardiovascular Medicine, Pediatric and Adolescent Medicine, and Molecular Pharmacology & Experimental Therapeutics, Division of Heart Rhythm Services and Pediatric Cardiology, Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Marina Cerrone
- Inherited Arrhythmias Clinic, Leon H. Charney Division of Cardiology, NYU Grossmann School of Medicine, New York, NY, USA
| | - Peter Covi
- Department of Pediatrics, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - Bettina Cuneo
- Department of Pediatrics, Section of Cardiology, University of Denver School of Medicine, Aurora, CO, USA
| | - Isabelle Denjoy
- Centre de Référence Maladies Cardiaques Héréditaires Filière Cardiogen, Département de Rythmologie, Groupe Hospitalier Bichat-Claude Bernard, Paris, France
| | - Birgit Donner
- Kardiologie, Universitäts-Kinderspital beider Basel (UKBB), Basel, Switzerland
| | - Adrienne Elbert
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Håkan Eliasson
- Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Pediatric Cardiology C8:34, Karolinska University Hospital, Stockholm, Sweden
| | - Susan P Etheridge
- Department of Pediatrics, Division of Pediatric Cardiology, University of Utah and Primary Children’s Hospital, Salt Lake City, UT, USA
| | - Megumi Fukuyama
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Shiga, Japan
| | | | - Robert Hamilton
- Division of Cardiology, The Hospital for Sick Children (SickKids), Toronto, ON, Canada
| | - Minoru Horie
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Shiga, Japan
| | - Maria Iascone
- Laboratorio di Genetica Medica, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Juan Jiménez Jaimez
- Hospital Universitario Virgen de las Nieves, Instituto de Investigación Biosanitario IBS Granada, Spain
| | - Henrik Kjærulf Jensen
- Department of Cardiology, Department of Clinical Medicine, Aarhus University Hospital, Aarhus University, K-8200 Aarhus N, Denmark
| | - Prince J Kannankeril
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Juan P Kaski
- Centre for Paediatric Inherited and Rare Cardiovascular Disease, Institute of Cardiovascular Science, University College London, Zayed Centre for Research into Rare Disease in Childhood, London, UK
- Centre for Inherited Cardiovascular Diseases, Great Ormond Street Hospital, London, UK
| | - Naomasa Makita
- National Cerebral and Cardiovascular Center, Suita, Japan
- Sapporo Teishinkai Hospital, Sapporo, Japan
| | - Carmen Muñoz-Esparza
- Member of the European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart
- Inherited Cardiac Disease Unit, Hospital Universitario Virgen Arrixaca, Murcia, Spain
| | - Hans H Odland
- Department of Cardiology and Pediatric Cardiology, Section for Arrhythmias, Oslo University Hospital, Oslo, Norway
| | - Seiko Ohno
- Department of Bioscience and Genetics, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - John Papagiannis
- Pediatric and Adult Congenital Heart Disease, Onassis Cardiac Surgery Center, Athens, Greece
| | - Alessandra Pia Porretta
- Unité des Troubles du Rythme, Service de Cardiologie, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Christopher Prandstetter
- Medical Faculty, Johannes Kepler University Linz, Linz, Austria
- Department of Pediatric Cardiology, Kepler University Hospital, Linz, Austria
| | - Vincent Probst
- Service de Cardiologie, L’institut du Thorax, CHU Nantes, Nantes, France
| | - Tomas Robyns
- Member of the European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart
- Department of Cardiovascular Diseases, University Hospitals Leuven, Leuven, Belgium
| | - Eric Rosenthal
- Evelina London Children’s Hospital, St Thomas’ Hospital, London, UK
| | - Ferran Rosés-Noguer
- Member of the European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart
- Lead Paediatric Cardiology Department, Vall d’Hebron University Hospital, Barcelona, Spain
- Royal Brompton Hospital NHS Guy’s and St Thomas Foundation Trust, London, UK
| | - Nicole Sekarski
- Unité de Cardiologie Pédiatrique, Département Médico-Chirurgical de Pédiatrie, CHUV | Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Anoop Singh
- Department of Pediatrics, Medical College of Wisconsin, Wauwatosa, WI, USA
| | | | - Fridrike Stute
- Department of Pediatric Cardiology, University Heart & Vascular Center Hamburg, Hamburg, Germany
| | - Jacob Tfelt-Hansen
- Member of the European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart
- Section of Genetics, Department of Forensic Medicine, Faculty of Medical Sciences, University of Copenhagen, Denmark
- Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jan Till
- Royal Brompton Hospital NHS Guy’s and St Thomas Foundation Trust, London, UK
| | - Kathryn E Tobert
- Departments of Cardiovascular Medicine, Pediatric and Adolescent Medicine, and Molecular Pharmacology & Experimental Therapeutics, Division of Heart Rhythm Services and Pediatric Cardiology, Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | | | - Gregory Webster
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Arthur A M Wilde
- Member of the European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart
- Department of Cardiology, Amsterdam UMC Location University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam, The Netherlands
| | - Cordula M Wolf
- Center for Rare Congenital Heart Diseases, Department of Congenital Heart Defects and Pediatric Cardiology, German Heart Center Munich, Technical University Munich, School of Medicine & Health, Munich, Germany
| | - Michael J Ackerman
- Departments of Cardiovascular Medicine, Pediatric and Adolescent Medicine, and Molecular Pharmacology & Experimental Therapeutics, Division of Heart Rhythm Services and Pediatric Cardiology, Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Peter J Schwartz
- Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo 22, 20135 Milan, Italy
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Beach CM, Lampert R. Optimizing pre-participation screening to prevent tragedy in young athletes: moving from if to how. Eur Heart J 2023; 44:1093-1095. [PMID: 36760103 DOI: 10.1093/eurheartj/ehad015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Affiliation(s)
- Cheyenne M Beach
- Section of Pediatric Cardiology, Yale University School of Medicine, 333 Cedar St, New Haven, CT 06510, USA
| | - Rachel Lampert
- Yale University School of Medicine, 789 Howard Ave, Dana 319, New Haven, CT 06511, USA
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Keaney JF, Simmons MA, Elder RW, Beach CM. Fontan-related morbidity and paced QRS duration: A case series. Progress in Pediatric Cardiology 2023. [DOI: 10.1016/j.ppedcard.2023.101641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Sandkuhler SE, Zhang L, Meisner JK, Ghaloul-Gonzalez L, Beach CM, Harris D, de Lonlay P, Lalani SR, Miyake CY, Mackenzie SJ. B-complex vitamins for patients with TANGO2-deficiency disorder. J Inherit Metab Dis 2023; 46:161-162. [PMID: 36550018 PMCID: PMC10204720 DOI: 10.1002/jimd.12585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/22/2022] [Indexed: 12/24/2022]
Affiliation(s)
- Sarah E. Sandkuhler
- Department of Pathology, University of Rochester Medical Center, Rochester, New York, USA
| | - Lilei Zhang
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Joshua K. Meisner
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Pediatrics, Michigan Medicine, Ann Arbor, Michigan, USA
| | - Lina Ghaloul-Gonzalez
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Pediatrics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Cheyenne M. Beach
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut, USA
| | - David Harris
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Neurology, Michigan Medicine, Ann Arbor, Michigan, USA
| | - Pascale de Lonlay
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Pediatrics, Hôpital Necker-Enfants Malades, Paris, France
| | - Seema R. Lalani
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Christina Y. Miyake
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
| | - Samuel J. Mackenzie
- TANGO2 Research Foundation, Clinical Advisory Board, Middletown, Connecticut, USA
- Department of Neurology, University of Rochester Medical Center, Rochester, New York, USA
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Beach CM, Stewart E, Marcuccio E, Beerman L, Arora G. Lyme carditis presenting as paroxysmal junctional tachycardia and complete atrioventricular block in an adolescent. J Electrocardiol 2023; 76:14-16. [PMID: 36372012 DOI: 10.1016/j.jelectrocard.2022.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/26/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
Abstract
We describe a case of a previously healthy adolescent who presented with junctional tachycardia and complete atrioventricular (AV) block due to Lyme carditis. The simultaneous presence of these findings suggested significant inflammation of the AV junction. Junctional tachycardia, particularly if seen in a patient with conduction abnormalities and potential tick exposure, should increase suspicion for Lyme carditis.
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Affiliation(s)
- Cheyenne M Beach
- Section of Pediatric Cardiology, Yale School of Medicine, 333 Cedar Street, New Haven, CT 06520, United States of America.
| | - Eileen Stewart
- Texas Center for Pediatric and Congenital Heart Disease, Dell Children's Medical Center, 4910 Mueller Blvd, Austin, TX 78723, United States of America.
| | - Elisa Marcuccio
- Division of Pediatric Cardiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, United States of America.
| | - Lee Beerman
- Division of Pediatric Cardiology, Children's Hospital of Pittsburgh of UPMC, 4401 Penn Avenue, Pittsburgh, PA 15224, United States of America.
| | - Gaurav Arora
- Division of Pediatric Cardiology, Children's Hospital of Pittsburgh of UPMC, 4401 Penn Avenue, Pittsburgh, PA 15224, United States of America.
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Lawley CM, Tester M, Sanatani S, Prendiville T, Beach CM, Vinocur JM, Horie M, Uhm JS, Khongphatthanayothin A, Ayers MD, Starling L, Yoshida Y, Shah MJ, Skinner JR, Turner C. Life-threatening cardiac arrhythmia and sudden death during electronic gaming: An international case series and systematic review. Heart Rhythm 2022; 19:1826-1833. [PMID: 37850595 DOI: 10.1016/j.hrthm.2022.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/21/2022] [Accepted: 08/02/2022] [Indexed: 01/01/2023]
Abstract
BACKGROUND Electronic gaming has recently been reported as a precipitant of life-threatening cardiac arrhythmia in susceptible individuals. OBJECTIVE The purpose of this study was to describe the population at risk, the nature of cardiac events, and the type of game linked to cardiac arrhythmia associated with electronic gaming. METHODS A multisite international case series of suspected or proven cardiac arrhythmia during electronic gaming in children and a systematic review of the literature were performed. RESULTS Twenty-two patients (18 in the case series and 4 via systematic review; aged 7-16 years; 19 males [86%]) were identified as having experienced suspected or proven ventricular arrhythmia during electronic gaming; 6 (27%) had experienced cardiac arrest, and 4 (18%) died suddenly. A proarrhythmic cardiac diagnosis was known in 7 (31%) patients before their gaming event and was established afterward in 12 (54%). Ten patients (45%) had catecholaminergic polymorphic ventricular tachycardia, 4 (18%) had long QT syndrome, 2 (9%) were post-congenital cardiac surgery, 2 (9%) had "idiopathic" ventricular fibrillation, and 1 (after Kawasaki disease) had coronary ischemia. In 3 patients (14%), including 2 who died, the diagnosis remains unknown. In 13 (59%) patients for whom the electronic game details were known, 8 (62%) were war games. CONCLUSION Electronic gaming can precipitate lethal cardiac arrhythmias in susceptible children. The incidence appears to be low, but syncope in this setting should be investigated thoroughly. In children with proarrhythmic cardiac conditions, electronic war games in particular are a potent arrhythmic trigger.
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Affiliation(s)
- Claire M Lawley
- The Heart Centre for Children, Sydney Children's Hospitals Network, Sydney, New South Wales, Australia; The University of Sydney Children's Hospital Westmead Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia; Department of Paediatric Cardiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom.
| | - Matthew Tester
- Children's Heart Centre, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Shubhayan Sanatani
- Children's Heart Centre, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Terence Prendiville
- Department of Cardiology and Cardiac Surgery, Children's Health Ireland at Crumlin, Dublin, Republic of Ireland
| | - Cheyenne M Beach
- Department of Pediatrics, Division of Pediatric Cardiology, Yale University School of Medicine, New Haven, Connecticut
| | - Jeffrey M Vinocur
- Department of Pediatrics, Division of Pediatric Cardiology, Yale University School of Medicine, New Haven, Connecticut; Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Minoru Horie
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Shiga, Japan
| | - Jae-Sun Uhm
- Department of Cardiology, Yongin Severance Hospital, College of Medicine, Yonsei University, Yongin, Gyeonggi-do, Republic of Korea
| | - Apichai Khongphatthanayothin
- Department of Cardiology, Yongin Severance Hospital, College of Medicine, Yonsei University, Yongin, Gyeonggi-do, Republic of Korea; Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Mark D Ayers
- Department of Pediatrics, Division of Pediatric Cardiology, Pediatric Electrophysiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Luke Starling
- Department of Paediatric Cardiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Yoko Yoshida
- Department of Pediatric Electrophysiology, Osaka City General Hospital, Miyakojima-hondori, Miyakojima-ku, Osaka, Japan
| | - Maully J Shah
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jonathan R Skinner
- The Heart Centre for Children, Sydney Children's Hospitals Network, Sydney, New South Wales, Australia
| | - Christian Turner
- The Heart Centre for Children, Sydney Children's Hospitals Network, Sydney, New South Wales, Australia
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11
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Miyake CY, Lay EJ, Beach CM, Ceresnak SR, Delauz CM, Howard TS, Janson CM, Jardine K, Kannankeril PJ, Kava M, Kim JJ, Liberman L, Macicek SL, Pham TD, Robertson T, Valdes SO, Webster G, Stephens SB, Milewicz DM, Azamian M, Ehsan SA, Houck KM, Soler-Alfonso C, Glinton KE, Tosur M, Li N, Xu W, Lalani SR, Zhang L. Cardiac crises: Cardiac arrhythmias and cardiomyopathy during TANGO2 deficiency related metabolic crises. Heart Rhythm 2022; 19:1673-1681. [PMID: 35568137 PMCID: PMC10642301 DOI: 10.1016/j.hrthm.2022.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 01/09/2023]
Abstract
BACKGROUND TANGO2 deficiency disorder (TDD) is an autosomal recessive disease associated with metabolic crisis, lethal cardiac arrhythmias, and cardiomyopathy. Data regarding treatment, management, and outcomes of cardiac manifestations of TDD are lacking. OBJECTIVE The purpose of this study was to describe TDD-related cardiac crises. METHODS Retrospective multicenter chart review was made of TDD patients admitted with cardiac crises, defined as development of ventricular tachycardia (VT), cardiomyopathy, or cardiac arrest during metabolic crises. RESULTS Twenty-seven children were admitted for 43 cardiac crises (median age 6.4 years; interquartile range [IQR] 2.4-9.8 years) at 14 centers. During crisis, QTc prolongation occurred in all (median 547 ms; IQR 504-600 ms) and a type I Brugada pattern in 8 (26%). Arrhythmias included VT in 21 (78%), supraventricular tachycardia in 3 (11%), and heart block in 1 (4%). Nineteen patients (70%) developed cardiomyopathy, and 20 (74%) experienced a cardiac arrest. There were 10 deaths (37%), 6 related to arrhythmias. In 5 patients, recalcitrant VT occurred despite use of antiarrhythmic drugs. In 6 patients, arrhythmias were controlled after extracorporeal membrane oxygenation (ECMO) support; 5 of these patients survived. Among 10 patients who survived VT without ECMO, successful treatment included intravenous magnesium, isoproterenol, and atrial pacing in multiple cases and verapamil in 1 patient. Initiation of feeds seemed to decrease VT events. CONCLUSION TDD-related cardiac crises are associated with a high risk of arrhythmias, cardiomyopathy, cardiac arrest, and death. Although further studies are needed, early recognition and appropriate treatment are critical. Acutely, intravenous magnesium, isoproterenol, atrial pacing, and ECMO as a last resort seem to be the best current treatment options, and early initiation of feeds may prevent VT events.
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Affiliation(s)
- Christina Y Miyake
- Department of Pediatrics, Division of Pediatric Cardiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas; Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston Texas.
| | - Erica J Lay
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Scott R Ceresnak
- Lucile Packard Children's Hospital, Stanford University, Palo Alto, California
| | | | - Taylor S Howard
- Department of Pediatrics, Division of Pediatric Cardiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas
| | | | - Kate Jardine
- John Hunter Children's Hospital, Newcastle, New South Wales, Australia
| | | | - Maina Kava
- Department of Neurology and Metabolic Medicine, Perth Children's Hospital, Perth, Western Australia
| | - Jeffrey J Kim
- Department of Pediatrics, Division of Pediatric Cardiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas
| | - Leonardo Liberman
- New York Presbyterian, Morgan Stanley Children's Hospital, New York, New York
| | | | - Tam Dam Pham
- Department of Pediatrics, Division of Pediatric Cardiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas
| | | | - Santiago O Valdes
- Department of Pediatrics, Division of Pediatric Cardiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas
| | | | - Sara B Stephens
- Department of Pediatrics, Division of Pediatric Cardiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas
| | - Diana M Milewicz
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Center at Houston, Houston, Texas
| | - Mahshid Azamian
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Saad A Ehsan
- Baylor College School of Medicine, Houston, Texas
| | - Kimberly M Houck
- Department of Pediatrics, Division of Neurology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas
| | - Claudia Soler-Alfonso
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Kevin E Glinton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Mustafa Tosur
- Department of Pediatrics, Division of Endocrinology, Texas Children's Hospital and Baylor College of Medicine, Houston, Texas
| | - Na Li
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Center at Houston, Houston, Texas
| | - Weiyi Xu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Seema R Lalani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Lilei Zhang
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston Texas; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
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12
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Beach CM, Faherty E, Pesce M. Coronavirus disease 2019 and the young heart: prevention, treatment, and return to play. Curr Opin Pediatr 2022; 34:471-475. [PMID: 36036422 PMCID: PMC9593324 DOI: 10.1097/mop.0000000000001167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW COVID-19-related guidance has changed dramatically since the onset of the pandemic. Awareness of data regarding prevention of disease, the cardiac manifestations and treatment of acute COVID-19 and multisystem inflammatory syndrome in children, and return to physical activity following an infection allows for appropriate adjustment of current care models and guides future study. RECENT FINDINGS Severe acute respiratory syndrome coronavirus 2 transmission can be reduced using various mitigation strategies, though their effectiveness differs based on viral prevalence. The risk of severe disease during acute COVID-19 infection is low in children and adolescents, though specific risk factors have been identified. COVID-19 vaccination significantly decreases the risk of severe disease and poor outcomes. Regular physical activity positively affects well being and has been a focus of recent guidance regarding well tolerated return to activities following an infection. SUMMARY The use of strategies to reduce viral transmission will depend on individuals' and communities' risk tolerance and on current viral prevalence. COVID-19 vaccination should be encouraged, particularly in patients with identified risk factors. Allowing children and adolescents to safely participate in physical and other activities should continue to be a focus of our clinical and research efforts given their myriad benefits in this population.
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Affiliation(s)
- Cheyenne M Beach
- Department of Pediatrics, Section of Pediatric Cardiology, Yale School of Medicine, New Haven, Connecticut, USA
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13
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Sullivan JS, Maitoza LA, Brysiewicz NR, Hall EK, Beach CM. Electromagnetic interference complicating Impella ® use during pediatric ablation. Ann Pediatr Cardiol 2022; 15:533-535. [PMID: 37152518 PMCID: PMC10158480 DOI: 10.4103/apc.apc_3_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 03/03/2023] Open
Abstract
In children, the Impella® is most commonly used in the setting of cardiogenic shock. There are few reported cases of Impella® use in pediatric patients undergoing ablation; description of troubleshooting techniques may improve success rates. We describe a pediatric patient with tachycardia-induced cardiomyopathy due to incessant ectopic atrial tachycardia whose ablation was notable for significant electromagnetic interference (EMI) from the Impella® leading to incomplete mapping. This case highlights the need for multidisciplinary planning and consideration of possible EMI with the use of magnet-based electroanatomic mapping systems as well as troubleshooting techniques to reduce the impact of EMI.
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Affiliation(s)
- John S. Sullivan
- Department of Pediatrics, Yale New Haven Children’s Hospital, New Haven, CT, USA
| | - Laura A. Maitoza
- Department of Pediatrics, UCLA Mattel Children’s Hospital, Los Angeles, CA, USA
| | - Neil R. Brysiewicz
- Section of Cardiovascular Medicine, Division of Medicine, Yale New Haven Hospital, 20 York Street, New Haven, CT, USA
| | - E. Kevin Hall
- Department of Pediatrics, Section of Pediatric Cardiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, USA
| | - Cheyenne M. Beach
- Department of Pediatrics, Section of Pediatric Cardiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, USA
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14
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Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Corcia MCG, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubuš P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Bergen NHV, Wackel PL. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Executive Summary. Ann Pediatr Cardiol 2022; 15:323-346. [PMID: 36589659 PMCID: PMC9802608 DOI: 10.4103/0974-2069.361245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California
| | - Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | | | | | | | - Monica N Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York University Grossman School of Medicine, New York, New York
| | | | - Aarti S Dalal
- Washington University in St. Louis, St. Louis, Missouri
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter P Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | | | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary C Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah
| | | | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | | | | | | | - Reina B Tan
- New York University Langone Health, New York, New York
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15
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Escudero CA, Tan RBM, Beach CM, Dalal AS, LaPage MJ, Hill AC. Approach to Wide Complex Tachycardia in Paediatric Patients. CJC Pediatr Congenit Heart Dis 2022; 1:60-73. [PMID: 37969244 PMCID: PMC10642107 DOI: 10.1016/j.cjcpc.2022.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/14/2022] [Indexed: 11/17/2023]
Abstract
Wide complex tachycardia (WCT) is an infrequently encountered condition in paediatric patients and may be due to a variety of causes including supraventricular tachycardia with aberrant conduction, ventricular activation via an accessory pathway, ventricular pacing, or ventricular tachycardia. Immediate tachycardia termination is required in haemodynamically unstable patients. After stabilization or in those with haemodynamically tolerated WCT, a careful review of electrocardiographic tracings and diagnostic manoeuvres are essential to help elucidate the cause. Subacute and chronic management for WCT will depend on the underlying cause as well as features of the patient and the tachycardia presentation. This article will review the epidemiology, potential causes, and management of WCT in children. A detailed review of the pathophysiology, differential diagnosis, and diagnostic and treatment options is provided to enable the reader to develop a practical approach to managing this condition in young patients.
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Affiliation(s)
- Carolina A. Escudero
- Division of Cardiology, Department of Pediatrics, University of Alberta and Stollery Children’s Hospital, Edmonton, Alberta, Canada
| | - Reina Bianca M. Tan
- Division of Cardiology, Department of Pediatrics, NYU Langone Health and Hassenfeld Children’s Hospital, New York, New York, USA
| | - Cheyenne M. Beach
- Section of Cardiology, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Aarti S. Dalal
- Division of Cardiology, Department of Pediatrics, Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Martin J. LaPage
- Division of Cardiology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Allison C. Hill
- Division of Cardiology, Children’s Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, California, USA
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16
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Barresi NV, Marcus BS, Beach CM, Vinocur JM. An unusual cause of repolarization abnormality after congenital heart surgery: A case report. J Electrocardiol 2022; 72:91-94. [DOI: 10.1016/j.jelectrocard.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 03/18/2022] [Indexed: 11/24/2022]
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17
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Shah MJ, Silka MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubuš P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Bergen NHV, Wackel PL. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Developed in collaboration with and endorsed by the Heart Rhythm Society (HRS), the American College of Cardiology (ACC), the American Heart Association (AHA), and the Association for European Paediatric and Congenital Cardiology (AEPC) Endorsed by the Asia Pacific Heart Rhythm Society (APHRS), the Indian Heart Rhythm Society (IHRS), and the Latin American Heart Rhythm Society (LAHRS). JACC Clin Electrophysiol 2021; 7:1437-1472. [PMID: 34794667 DOI: 10.1016/j.jacep.2021.07.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In view of the increasing complexity of both cardiovascular implantable electronic devices (CIEDs) and patients in the current era, practice guidelines, by necessity, have become increasingly specific. This document is an expert consensus statement that has been developed to update and further delineate indications and management of CIEDs in pediatric patients, defined as ≤21 years of age, and is intended to focus primarily on the indications for CIEDs in the setting of specific disease categories. The document also highlights variations between previously published adult and pediatric CIED recommendations and provides rationale for underlying important differences. The document addresses some of the deterrents to CIED access in low- and middle-income countries and strategies to circumvent them. The document sections were divided up and drafted by the writing committee members according to their expertise. The recommendations represent the consensus opinion of the entire writing committee, graded by class of recommendation and level of evidence. Several questions addressed in this document either do not lend themselves to clinical trials or are rare disease entities, and in these instances recommendations are based on consensus expert opinion. Furthermore, specific recommendations, even when supported by substantial data, do not replace the need for clinical judgment and patient-specific decision-making. The recommendations were opened for public comment to Pediatric and Congenital Electrophysiology Society (PACES) members and underwent external review by the scientific and clinical document committee of the Heart Rhythm Society (HRS), the science advisory and coordinating committee of the American Heart Association (AHA), the American College of Cardiology (ACC), and the Association for European Paediatric and Congenital Cardiology (AEPC). The document received endorsement by all the collaborators and the Asia Pacific Heart Rhythm Society (APHRS), the Indian Heart Rhythm Society (IHRS), and the Latin American Heart Rhythm Society (LAHRS). This document is expected to provide support for clinicians and patients to allow for appropriate CIED use, appropriate CIED management, and appropriate CIED follow-up in pediatric patients.
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Affiliation(s)
- Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA.
| | - Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California, USA.
| | | | | | | | - Monica N Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York University Grossman School of Medicine, New York, New York, USA
| | | | - Aarti S Dalal
- Washington University in St. Louis, St. Louis, Missouri, USA
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois, USA
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter P Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan, USA
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | | | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary C Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah, USA
| | - Melissa Olen
- Nicklaus Children's Hospital, Miami, Florida, USA
| | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | | | | | | | - Reina B Tan
- New York University Langone Health, New York, New York, USA
| | | | - Nicholas H Von Bergen
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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18
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Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubuš P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel PL. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Executive Summary. Heart Rhythm 2021; 18:1925-1950. [PMID: 34363987 DOI: 10.1016/j.hrthm.2021.07.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 10/20/2022]
Affiliation(s)
- Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California.
| | - Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.
| | | | | | | | - Monica N Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York University Grossman School of Medicine, New York, New York
| | | | - Aarti S Dalal
- Washington University in St. Louis, St. Louis, Missouri
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter P Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | | | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary C Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah
| | | | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | | | | | | | - Reina B Tan
- New York University Langone Health, New York, New York
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19
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Cai K, Shao W, Chen X, Campbell YL, Nair MN, Suman SP, Beach CM, Guyton MC, Schilling MW. Meat quality traits and proteome profile of woody broiler breast (pectoralis major) meat. Poult Sci 2018; 97:337-346. [PMID: 29053841 DOI: 10.3382/ps/pex284] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 09/07/2017] [Indexed: 01/03/2023] Open
Abstract
Woody breast meat has recently become prevalent in the broiler industry in both the United States and European Union. Recent publications have described the meat quality characteristics of woody breast meat as having hardened areas and pale ridge-like bulges at both the caudal and cranial regions of the breast. The present study investigated the meat quality (pH, color, cooking loss, and shear force) and protein quality characteristics (protein and salt-soluble protein content) in woody breast meat as compared to normal breast meat. In addition, the differences in the muscle proteome profiles of woody and normal breast meat were characterized. Results indicated that woody breast meat had a greater average pH (P < 0.0001) and cooking loss (P = 0.001) than normal breast meat, but woody breast meat did not differ in shear force (P > 0.05) in comparison to normal breast meat samples. The L*, a*, and b* values of woody breast fillets were greater than normal breast fillets (P < 0.0001 to L*; P = 0.002 to a*; P = 0.016 to b*). The woody breast meat had more fat (P < 0.0001) and moisture (P < 0.021) and less protein (P < 0.0001) and salt-soluble protein (P < 0.0001) when compared with normal breast fillets. Whole muscle proteome analysis indicated 8 proteins that were differentially expressed (P < 0.05) between normal and woody breast meat samples. The differences in muscle proteome between normal and woody breast meat indicated an increased oxidative stress in woody breast meat when compared to normal meat. In addition, the abundance of some glycolytic enzymes, which are critical to the regeneration of adenosine triphosphate (ATP) in postmortem muscles, was lower in woody breast meat than in normal breast meat. Proteomic differences provide additional information on the biochemical pathways and genetic variations that lead to woody breast meat. Further research should be conducted to elucidate the genetic and nutritional contributions to the proliferation of woody breast meat in the United States.
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Affiliation(s)
- K Cai
- School of Food Science and Engineering, Hefei University of Technology, Hefei, 230009 PRA
| | - W Shao
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State 39762
| | - X Chen
- Department of Poultry Science, Mississippi State University, Mississippi State 39762
| | - Y L Campbell
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State 39762
| | - M N Nair
- Department of Animal and Food Sciences, University of Kentucky, Lexington 40546
| | - S P Suman
- Department of Animal and Food Sciences, University of Kentucky, Lexington 40546
| | - C M Beach
- Proteomics Core Facility, University of Kentucky, Lexington 40506
| | - M C Guyton
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State 39762
| | - M W Schilling
- Department of Food Science, Nutrition, and Health Promotion, Mississippi State University, Mississippi State 39762
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20
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Joseph P, Suman SP, Li S, Beach CM, Steinke L, Fontaine M. Characterization of bison (Bison bison) myoglobin. Meat Sci 2009; 84:71-8. [PMID: 20374756 DOI: 10.1016/j.meatsci.2009.08.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Revised: 08/04/2009] [Accepted: 08/10/2009] [Indexed: 10/20/2022]
Abstract
Bison is an alternate meat species gaining increased popularity in North America. Although previous investigations reported that bison meat discolors faster than beef, the molecular basis of this observation has not been investigated. Therefore, the objective of the present study was to determine the redox stability, thermostability, and primary structure of bison myoglobin (Mb), in comparison with beef Mb. Purified bison and beef myoglobins were analyzed for autoxidation, lipid oxidation-induced oxidation, and thermostability. Matrix Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry was utilized for determining the exact molecular mass of bison Mb, whereas Edman degradation was employed to determine the amino acid sequence. Bison and beef myoglobins behaved similarly in autoxidation, lipid oxidation-induced oxidation, and thermostability. The observed molecular mass of bison and beef myoglobins was 16,949 Da, and the primary structure of bison Mb shared 100% similarity with beef and yak myoglobins. Noticeably, the amino acid sequence of bison Mb was different from other ruminant myoglobins, such as water-buffalo, sheep, goat, and red-deer. The present study is the first to report the primary structure of bison Mb. Same primary structure and similar biochemical attributes of bison and beef myoglobins suggested that the observed rapid discoloration in bison meat could not be attributed to biochemistry of bison Mb.
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Affiliation(s)
- P Joseph
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA
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21
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Schaefer AW, Kamiguchi H, Wong EV, Beach CM, Landreth G, Lemmon V. Activation of the MAPK signal cascade by the neural cell adhesion molecule L1 requires L1 internalization. J Biol Chem 1999; 274:37965-73. [PMID: 10608864 DOI: 10.1074/jbc.274.53.37965] [Citation(s) in RCA: 155] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
L1-mediated axon growth involves intracellular signaling, but the precise mechanisms involved are not yet clear. We report a role for the mitogen-activated protein kinase (MAPK) cascade in L1 signaling. L1 physically associates with the MAPK cascade components Raf-1, ERK2, and the previously identified p90(rsk) in brain. In vitro, ERK2 can phosphorylate L1 at Ser(1204) and Ser(1248) of the L1 cytoplasmic domain. These two serines are conserved in the L1 family of cell adhesion molecules, also being found in neurofascin and NrCAM. The ability of ERK2 to phosphorylate L1 suggests that L1 signaling could directly regulate L1 function by phosphorylation of the L1 cytoplasmic domain. In L1-expressing 3T3 cells, L1 cross-linking can activate ERK2. Remarkably, the activated ERK localizes with endocytosed vesicular L1 rather than cell surface L1, indicating that L1 internalization and signaling are coupled. Inhibition of L1 internalization with dominant-negative dynamin prevents activation of ERK. These results show that L1-generated signals activate the MAPK cascade in a manner most likely to be important in regulating L1 intracellular trafficking.
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Affiliation(s)
- A W Schaefer
- Department of Neurosciences, Case Western Reserve University, Cleveland, Ohio 44106-4975, USA
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22
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Katz WF, Beach CM, Jenouri K, Verma S. Duration and fundamental frequency correlates of phrase boundaries in productions by children and adults. J Acoust Soc Am 1996; 99:3179-3191. [PMID: 8642124 DOI: 10.1121/1.414802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two experiments examined how children and adults produce acoustic correlates for phrase boundaries during speech. Adult and children (ages 5 and 7) were asked to describe groupings of colored blocks, first in a relatively spontaneous manner and next under more structured conditions designed to elicit grouping information concerning "which blocks go together." In the spontaneous condition, adults gave elaborate descriptions of block positions and color, whereas children produced short descriptions such as "pink, green, white;" "pink, green, and white;" and "pink and green and white." In the structured condition, all subjects produced utterances corresponding to three syntactic bracketings of the phrase "pink and green and white:" [pink and (green and white)]; [(pink and green) and white]; and [pink and green and white]. Acoustic analyses indicated that adults reliably control both duration and fundamental frequency (F0) to signal phrase boundaries, whereas children of both age groups demonstrate little evidence of either type of information being used. We interpret these finding as suggesting that children as old as age 7 do not produce prosodic cues for this type of standing ambiguity in their everyday speech. Possible reasons for this lack of phrase boundary prosodic correlates are examined.
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Affiliation(s)
- W F Katz
- University of Texas at Dallas, Callier Center for Communication Disorders 75235-7298, USA
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23
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Abstract
Using synthetic speech, word duration and fundamental frequency (F0) contours were parametrically manipulated to examine processes of phrasal interpretation by adult and child (5 and 7 years old) listeners. From an adult male voice, versions of the phrase "pink and green and white" were resynthesized to produce stimuli suggesting two possible interpretations: [(pink and green) and white] and [pink and (green and white)]. For each stimulus, listeners pointed to a picture to indicate which interpretation was intended. All subjects used duration and (to a lesser extent) intonation as perceptually salient cues for phrasal interpretation. The manner in which subjects processed this information was evaluated by comparing subjects' performance with the predictions of three different information processing models: a nonindependent cue-evaluation model, and two independent cue-evaluation models (an additive model, and the multiplicative, fuzzy logical model). Performance was best described by the fuzzy logical model, which assumes independent cue evaluation and generates a classification function characterized by cue trading relations. The results suggest that, similar to adults, children as young as 5 years of age rely on acoustic-prosodic information for syntactic phrase interpretation, and they process this information in an adultlike manner.
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Affiliation(s)
- C M Beach
- University of California, San Diego, La Jolla 92093, USA
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24
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Joshi B, Cai AL, Keiper BD, Minich WB, Mendez R, Beach CM, Stepinski J, Stolarski R, Darzynkiewicz E, Rhoads RE. Phosphorylation of eukaryotic protein synthesis initiation factor 4E at Ser-209. J Biol Chem 1995; 270:14597-603. [PMID: 7782323 DOI: 10.1074/jbc.270.24.14597] [Citation(s) in RCA: 178] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Initiation factor 4E (eIF-4E) binds to the m7GTP-containing cap of eukaryotic mRNA and facilitates the entry of mRNA into the initiation cycle of protein synthesis. eIF-4E is a phosphoprotein, and the phosphorylated form binds to mRNA caps 3-4-fold more tightly than the nonphosphorylated form. A previous study indicated that the major phosphorylation site was Ser-53 (Rychlik, W., Russ, M. A., and Rhoads, R. E. (1987) J. Biol. Chem. 262, 10434-10437). In the present study, we synthesized the phosphopeptide expected to result from tryptic digestion of eIF-4E, O-phosphoseryllysine. Surprisingly, the tryptic and synthetic phosphopeptides did not comigrate electrophoretically. Accordingly, we redetermined the phosphorylation site by isolating a chymotryptic phosphopeptide on reverse phase high performance liquid chromatography. The peptide was sequenced by Edman degradation and corresponded to 198QSHADTATKSGSTTKNRF215. The site of phosphorylation was determined to be Ser-209 by four methods: the increase in the ratio of dehydroalanine to serine derivatives during Edman degradation, the release of 32P, the further digestion of the chymotryptic phosphopeptide with trypsin, Glu-C, and Asp-N, and site-directed mutagenesis of eIF-4E cDNA. The S209A variant was not phosphorylated in a rabbit reticulocyte lysate system, whereas the wild-type, S53A, and S207A variants were. This site falls within the consensus sequence for phosphorylation by protein kinase C.
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Affiliation(s)
- B Joshi
- Department of Biochemistry and Molecular Biology, Louisiana State University Medical Center, Shreveport 71130-3932, USA
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25
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Abbott MG, Beach CM. Immigrant earnings differentials and birth-year effects for men in Canada: post-war-1972. Can J Econ 1993; 26:505-524. [PMID: 12288058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
"This paper investigates immigrant earnings differentials for males in Canada and how these earnings have changed over time leading up to 1972 with workers' year of birth. The paper uses the 1973 Job Mobility Survey, which contains a direct measure of work experience reported independent of age. Thus, using age as a birth-year index, it is found that cross-sectional earnings differentials of immigrant men have widened since the later 1960s relative to those of native-born workers." (SUMMARY IN FRE)
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26
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de Beer MC, de Beer FC, Beach CM, Gonnerman WA, Carreras I, Sipe JD. Syrian and Armenian hamsters differ in serum amyloid A gene expression. Identification of novel Syrian hamster serum amyloid A subtypes. J Immunol 1993; 150:5361-70. [PMID: 8515064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Amyloid A (AA) amyloidosis is widespread throughout the animal kingdom. Several factors including: 1) precursor production; 2) precursor structure; 3) precursor degradation; and 4) precursor/product interaction with the pentraxin serum amyloid P have been implicated in amyloidogenesis, but the exact sequence of events leading to AA fibril formation and deposition remains unclear. Most models of experimental amyloidosis, including golden Syrian hamsters (Mesocricetus auratus), involve massive and repeated inflammatory stimulation; however, the model of spontaneous amyloidosis with aging in female, but not male, Syrian hamsters permits analysis of amyloidogenic factors in the absence of inflammation. Another genus, the Armenian hamster (Cricetulus migratorius), differs from Syrian hamsters both in gender-specific serum amyloid P expression and susceptibility to AA amyloidosis. In this study, we describe novel SAA molecules in the Syrian hamster in the presence and absence of inflammation. We demonstrate that, based on isoelectric separation, the Syrian hamster SAA proteins can be separated into two broad subfamilies. Plasma SAA concentration in female Syrian hamsters increases spontaneously with age, and fragments of a basic SAA isotype expressed both hepatically and extrahepatically are selectively deposited as AA fibrils. After inflammatory stimulation, the patterns of SAA gene expression in Syrian and Armenian hamsters differ. In Syrian hamsters, both hepatic SAA mRNA and the high density lipoprotein apoSAA content increase approximately 1000-fold; in Armenian hamsters, hepatic SAA mRNA is limited in quantity and different in structure; and although plasma SAA proteins increase three- to fivefold, apoSAA is not detectable in high density lipoprotein. The results suggest that regulation and site of precursor production as well as precursor structure influence AA amyloidogenesis in these two hamster genera.
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Affiliation(s)
- M C de Beer
- Department of Medicine, University of Kentucky College of Medicine, Lexington 40536-0084
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27
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de Beer MC, de Beer FC, Beach CM, Gonnerman WA, Carreras I, Sipe JD. Syrian and Armenian hamsters differ in serum amyloid A gene expression. Identification of novel Syrian hamster serum amyloid A subtypes. The Journal of Immunology 1993. [DOI: 10.4049/jimmunol.150.12.5361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Amyloid A (AA) amyloidosis is widespread throughout the animal kingdom. Several factors including: 1) precursor production; 2) precursor structure; 3) precursor degradation; and 4) precursor/product interaction with the pentraxin serum amyloid P have been implicated in amyloidogenesis, but the exact sequence of events leading to AA fibril formation and deposition remains unclear. Most models of experimental amyloidosis, including golden Syrian hamsters (Mesocricetus auratus), involve massive and repeated inflammatory stimulation; however, the model of spontaneous amyloidosis with aging in female, but not male, Syrian hamsters permits analysis of amyloidogenic factors in the absence of inflammation. Another genus, the Armenian hamster (Cricetulus migratorius), differs from Syrian hamsters both in gender-specific serum amyloid P expression and susceptibility to AA amyloidosis. In this study, we describe novel SAA molecules in the Syrian hamster in the presence and absence of inflammation. We demonstrate that, based on isoelectric separation, the Syrian hamster SAA proteins can be separated into two broad subfamilies. Plasma SAA concentration in female Syrian hamsters increases spontaneously with age, and fragments of a basic SAA isotype expressed both hepatically and extrahepatically are selectively deposited as AA fibrils. After inflammatory stimulation, the patterns of SAA gene expression in Syrian and Armenian hamsters differ. In Syrian hamsters, both hepatic SAA mRNA and the high density lipoprotein apoSAA content increase approximately 1000-fold; in Armenian hamsters, hepatic SAA mRNA is limited in quantity and different in structure; and although plasma SAA proteins increase three- to fivefold, apoSAA is not detectable in high density lipoprotein. The results suggest that regulation and site of precursor production as well as precursor structure influence AA amyloidogenesis in these two hamster genera.
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Affiliation(s)
- M C de Beer
- Department of Medicine, University of Kentucky College of Medicine, Lexington 40536-0084
| | - F C de Beer
- Department of Medicine, University of Kentucky College of Medicine, Lexington 40536-0084
| | - C M Beach
- Department of Medicine, University of Kentucky College of Medicine, Lexington 40536-0084
| | - W A Gonnerman
- Department of Medicine, University of Kentucky College of Medicine, Lexington 40536-0084
| | - I Carreras
- Department of Medicine, University of Kentucky College of Medicine, Lexington 40536-0084
| | - J D Sipe
- Department of Medicine, University of Kentucky College of Medicine, Lexington 40536-0084
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28
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de Beer MC, de Beer FC, Beach CM, Carreras I, Sipe JD. Mouse serum amyloid A protein. Complete amino acid sequence and mRNA analysis of a new isoform. Biochem J 1992; 283 ( Pt 3):673-8. [PMID: 1590757 PMCID: PMC1130938 DOI: 10.1042/bj2830673] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Four serum amyloid A protein (SAA) genes and two gene products, apo-SAA1 and apo-SAA2 were identified in BALB/c mice (type A). SJL/J mice (type B) are thought to be defective in apo-SAA2 expression. A unique variant of mouse apo-SAA was identified in SJL/J mice by isoelectric-focusing analysis of high-density lipoprotein from endotoxin-treated mice. Complete amino-acid-sequence analysis of this quantitatively major form of SJL/J apo-SAA (pI 5.9) showed it to be identical with the apo-SAA2 isoform from BALB/c mice, except for the substitution of aspartic acid for alanine at position 101. Isoform-specific analysis of mRNA from liver of BALB/c and SJL/J mice and their F1 hybrid progeny (CSJLF1/J) mice revealed further differences in the 3' untranslated regions of the genes, not only encoding apo-SAA2 and apo-SAA pI 5.9, but also apo-SAA1. The SAA genes of SJL/J mice thus differ from BALB/c in exon 4. Additional minor isoforms corresponding to apo-SAA2 (pI 6.3) in SJL/J mice and apo-SAA (pI 5.9) in BALB/c mice were identified. We propose that, when analysing a multigene family such as SAA, thorough analysis at the protein level should complement molecular-biological approaches where the use of a too-limited repertoire of probes can obscure complexities.
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Affiliation(s)
- M C de Beer
- Department of Medicine, University of Kentucky Medical Center, Lexington 40536
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29
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Abstract
Serum amyloid A protein (SAA), an acute-phase reactant and apolipoprotein of high-density lipoprotein, is a polymorphic protein with six reported isoforms. These are the products of three genes, i.e., cDNA pA1, cDNA pSAA82 and genomic DNA SAAg9, the last two being allelic variants at a single locus. We have identified an individual with additional novel SAA isoforms on isoelectric-focusing analysis. By using 3-bromo-3-methyl-2-(2'-nitrophenylsulphenyl)-indolenine (BNPS-skatole) cleavage of the protein at tryptophan residues we obtained the complete amino acid sequence of a novel isoform. Additional cleavage by endoproteinase Asp-N allowed verification of the tryptophan residues and complete amino acid sequence of both isoforms. The suitability of this approach to the rapid sequencing of SAA was demonstrated. Sequence analysis and quantification suggest that these isoforms are the result of the first confirmed allelic variation at the SAA1 locus. We designate the protein products of this allele SAA1 beta (pI 6.1) and SAA1 beta des-Arg (pI 5.6).
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Affiliation(s)
- C M Beach
- Department of Biochemistry, University of Kentucky College of Medicine, Lexington 40536-0084
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30
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Abstract
Forty married patients with metastatic cancer, who were receiving opioid medication for cancer pain, were interviewed for this study. They were asked about their pain and its treatment, their beliefs regarding cancer pain, their concerns about opioid analgesics, their mood state, and the nature of their interaction with their spouse in relation to these issues. The spouses of these cancer patients were interviewed separately about the same issues. For example, patients who were concerned about medication side effects tended to suffer high levels of pain before requesting additional analgesics. Spouses are shown in this study to be an important support for the patient and an essential source of information regarding the patient's pain and its management. For example, although spouses were generally accurate in their estimates of the patients' pain levels, in the case of relatively stoic patients, who may underreport their pain levels, the spouses' estimates were higher than the patients'. The results also indicate that patients underestimate the distress their pain causes to their spouses and that spouses tend to downgrade their own support to the patients. Implications and limitations of these findings are discussed.
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31
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Abstract
Four serum amyloid A protein (SAA) genes and two SAA gene products, SAA1 and SAA2, were identified in BALB/c mice. Using analytical isoelectric focusing we have identified a quantitatively significant new member of the SAA family and designated it 'SAA5'. This protein has characteristics never before described for any SAA molecule. In the highly conserved region between amino acids 33 and 44, identical in all SAAs from all species examined, SAA5 had four amino acid substitutions. In addition, the induction of SAA5 by lipopolysaccharide had different kinetics from that of the other mouse SAAs. Our data suggest that the mouse SAA gene family is more complex in composition and regulation than previously surmised.
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Affiliation(s)
- M C de Beer
- Division of Rheumatology, University of Kentucky College of Medicine, Lexington
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32
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Abstract
A survey of 124 protein and/or nucleic acid chemistry facilities has provided a basis for estimating the resources needed to establish a facility, the financial support needed to keep it operating, and the technical capabilities it might reasonably be expected to achieve. Based on these data, an average core facility occupied 870 ft2, was staffed by three full-time personnel, and was equipped with 4-5 major instrument systems. Because user fees generated an average of about $101,000/year in income compared with an average operating budget of about $197,000/year, even a facility that charged user fees would, on average, still require an annual subsidy of about $96,000. Although most government and industrial core facilities did not assess user fees, at least 83 of the 124 respondents did have a preestablished schedule of service charges that enabled a compilation to be made of the average cost of providing a number of typical facility analyses and syntheses. The greater than 100-fold range in charges assessed in core facilities for seemingly identical services was shown to result from the equally large range in the degree of subsidization of these laboratories. Although an average facility might be expected to offer four or five of the following six major services--amino acid sequencing, amino acid analysis, HPLC peptide isolation, peptide synthesis, fragmentation of proteins and DNA synthesis--less than 10% of the responding laboratories provided mass spectrometry, capillary zone electrophoresis, or RNA synthesis. With the exception of peptide synthesis, which had an average turn-around time of about 24 days, all other major services had turn-around times that averaged in the range of 4-9 days. Additional data are summarized regarding average sample throughput in core laboratories and the amount of protein that is needed for hydrolysis/amino acid analysis and sequencing.
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Affiliation(s)
- R L Niece
- University of Wisconsin Biotechnology Center, Madison 53705
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33
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Paul S, Mei S, Mody B, Eklund SH, Beach CM, Massey RJ, Hamel F. Cleavage of vasoactive intestinal peptide at multiple sites by autoantibodies. J Biol Chem 1991; 266:16128-34. [PMID: 1874750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Vasoactive intestinal peptide (VIP) fragments generated by autoantibodies purified from the blood of two human beings were separated and sequenced. Based on the identity of these fragments, seven peptide bonds cleaved by the antibodies were identified. Six of the seven scissile bonds are clustered in the region of VIP spanning residues 14-22 and were cleaved by antibodies from both human subjects. The seventh scissile bond is located at residues 7-8 and was cleaved by antibodies from one of the subjects. The scissile bonds link amino acid residues with different size, charge, and hydrophobicity. The hydrolytic activity of the antibodies was selective in that they failed to hydrolyze polypeptides unrelated in sequence to VIP (insulin and atrial natriuretic peptide). These observations demonstrate substrate specific hydrolysis by naturally occurring antibodies and expand the range of peptide bonds hydrolyzed by these antibodies.
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Affiliation(s)
- S Paul
- Department of Pharmacology, University of Nebraska Medical Center, Omaha 68198-6260
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34
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Farrar YJ, Evans RK, Beach CM, Coleman MS. Interactions of photoactive DNAs with terminal deoxynucleotidyl transferase: identification of peptides in the DNA binding domain. Biochemistry 1991; 30:3075-82. [PMID: 2007141 DOI: 10.1021/bi00226a014] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Terminal deoxynucleotidyl transferase (terminal transferase) was specifically modified in the DNA binding site by a photoactive DNA substrate (hetero-40-mer duplex containing eight 5-azido-dUMP residues at one 3' end). Under optimal photolabeling conditions, 27-40% of the DNA was covalently cross-linked to terminal transferase. The specificity of the DNA and protein interaction was demonstrated by protection of photolabeling at the DNA binding domain with natural DNA substrates. In order to recover high yields of modified peptides from limited amounts of starting material, protein modified with 32P-labeled photoactive DNA and digested with trypsin was extracted 4 times with phenol followed by gel filtration chromatography. All peptides not cross-linked to DNA were extracted into the phenol phase while the photolyzed DNA and the covalently cross-linked peptides remained in the aqueous phase. The 32P-containing peptide-DNA fraction was subjected to amino acid sequence analysis. Two sequences, Asp221-Lys231 (peptide B8) and Cys234-Lys249 (peptide B10), present in similar yield, were identified. Structure predictions placed the two peptides in an alpha-helical array of 39 A which would accommodate a DNA helix span of 11 nucleotides. These peptides share sequence similarity with a region in DNA polymerase beta that has been implicated in the binding of DNA template.
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Affiliation(s)
- Y J Farrar
- Department of Biochemistry, University of Kentucky, Lexington 40536-0084
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35
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Abstract
Vasoactive intestinal peptide (VIP) labeled with 125I, [Tyr10-125I]VIP, can be hydrolyzed by immunoglobulin G (IgG) purified from a human subject, as judged by trichloroacetic acid precipitation and reversed-phase high-performance liquid chromatography (HPLC). The hydrolytic activity was precipitated by antibody to human IgG, it was bound by immobilized protein G and showed a molecular mass close to 150 kilodaltons by gel filtration chromatography, properties similar to those of authentic IgG. The Fab fragment, prepared from IgG by papain treatment, retained the VIP hydrolytic activity of the IgG. Peptide fragments produced by treatment of VIP with the antibody fraction were purified by reversed-phase HPLC and identified by fast atom bombardment-mass spectrometry and peptide sequencing. The scissile bond in VIP deduced from these experiments was Gln16-Met17. The antibody concentration (73.4 fmol per milligram of IgG) and the Kd (0.4 nM) were computed from analysis of VIP binding under conditions that did not result in peptide hydrolysis. Analysis of the antibody-mediated VIP hydrolysis at varying concentrations of substrate suggested conformity with Michaelis-Menton kinetics (Km). The values for Km (37.9 X 10(-9) M) and the turnover number kcat (15.6 min-1) suggested relatively tight VIP binding and a moderate catalytic efficiency of the antibody.
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Affiliation(s)
- S Paul
- Department of Pharmacology, University of Nebraska Medical Center, Omaha 68105
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Evans RK, Beach CM, Coleman MS. Photoaffinity labeling of terminal deoxynucleotidyl transferase. 2. Identification of peptides in the nucleotide binding domain. Biochemistry 1989; 28:713-20. [PMID: 2713339 DOI: 10.1021/bi00428a045] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Terminal deoxynucleotidyl transferase (terminal transferase) was specifically modified in the nucleotide binding site by the substrate photoaffinity analogue [gamma-32P]-8-azido-dATP. The alpha and beta polypeptides of photolabeled terminal transferase were resolved by high-performance liquid chromatography. The beta polypeptide was digested with trypsin and fractionated by reverse-phase chromatography. Two 32P-containing fractions were isolated and subjected to amino acid sequence analysis. Peptides were identified as Ile209-Lys232 (B26) and Val233-Lys239 (B27). Peptide B26 was further resolved into two overlapping species; one contained an additional lysine residue at the N-terminus which resulted from tryptic cleavage between Lys207 and Lys208. In order to ensure that the sequenced peptides corresponded to the photolabeled species, we devised an anion-exchange procedure to isolate photolabeled peptides from the mixture. Analysis of photolabeled peptides from terminal transferase alpha beta using DEAE-cellulose chromatography followed by reverse-phase HPLC confirmed that the photolabeled species were peptides B26 and B27. Peptide B26, the major photolabeled species, contained a conserved octapeptide region found in several eucaryotic DNA polymerases. In addition, peptide B27 was flanked by a sequence that has been implicated in triphosphate binding in other proteins. Structure predictions, based on sequence data, place the two peptides identified by photolabeling in spatial proximity consistent with the participation of both in the nucleotide binding domain.
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Affiliation(s)
- R K Evans
- Department of Biochemistry, University of Kentucky, Lexington 40536-0084
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37
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Beach CM, Chan SK, Vanaman TC, Coleman MS. Terminal deoxynucleotidyltransferase. Alignment of alpha- and beta-subunits of the core enzyme along the primary translation product. Biochem J 1985; 227:1003-7. [PMID: 3839123 PMCID: PMC1144933 DOI: 10.1042/bj2271003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Terminal deoxynucleotidyltransferase exists in multiple Mr forms, all apparently generated from a single polypeptide of 62kDa. On isolation and purification, the smallest catalytically active protein of this enzyme consists of two subunits, alpha (12kDa) and beta (30kDa). Recently a complementary-DNA nucleotide sequence has been reported for a portion of the enzyme from human lymphoblast. We have pinpointed the locations of the alpha- and beta-subunits within the elucidated nucleotide sequence. From these data, the portions of the nucleotide sequence coding for the catalytically important area of the transferase can be estimated. Here the amino acid sequence of a number of tryptic peptides from calf alpha- and beta-subunits is presented. Because of the striking homology between the amino acid sequence of the calf enzyme and that predicted for human lymphoblast enzyme, it is possible for us to conclude that the alpha-subunit was generated from the C-terminus of the precursor protein and the beta-subunit was non-overlapping and proximal.
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