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Badhey N, Nevias-Ida A, Badhey H. Incidental Finding of Transthyretin Cardiac Amyloidosis During Coronary Artery Bypass Grafting. Cureus 2024; 16:e59466. [PMID: 38826962 PMCID: PMC11142387 DOI: 10.7759/cureus.59466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2024] [Indexed: 06/04/2024] Open
Abstract
Transthyretin cardiac amyloidosis (ATTR-CA) is a condition characterized by extracellular deposition of misfolded transthyretin proteins in the myocardium and has been historically difficult to diagnose due to diverse clinical manifestations and nonspecific, variable electrocardiogram (ECG) and echocardiogram findings. Advancements in noninvasive cardiac imaging have led to significant increases in diagnoses of ATTR-CA. Once thought to be a rare condition, there is growing evidence to suggest that ATTR-CA is more prevalent than previously understood, prompting the need for early diagnosis and intervention. We outline the case of a 78-year-old male who presented to the emergency department with chest discomfort, shortness of breath, dizziness, and diaphoresis. He was found to have severe coronary artery disease (CAD) and intermittent complete heart block. Cardiac dysfunction was unable to be resolved by percutaneous coronary intervention (PCI) and thus the patient was referred for coronary artery bypass grafting (CABG). Intraoperatively, the patient's heart was found to be abnormally thickened and fibrosed. Biopsy of the cardiac tissue and evaluation using technetium-99m pyrophosphate scintigraphy, single-photon emission computed tomography, and liquid chromatography-tandem mass spectrometry revealed ATTR-CA. There is a need for fast and low-cost screening tools to allow for early identification of the disease. Diagnostic clues for cardiac amyloidosis include the presence of carpal tunnel syndrome, lumbar spinal stenosis, atrial fibrillation, treatment-resistant heart failure with preserved ejection fraction, and a thickened left ventricular wall. Given the presence of these red flag symptoms, clinicians should have a heightened index of suspicion for ATTR cardiac amyloidosis in elderly patients even when presenting in acute settings.
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Affiliation(s)
- Narain Badhey
- Cardiology, Touro College of Osteopathic Medicine, New York, USA
| | - Antonia Nevias-Ida
- Emergency Medicine, Touro College of Osteopathic Medicine, New York, USA
| | - Hemanth Badhey
- Cardiology, St. Francis Hospital and Heart Center, Roslyn, USA
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2
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Jain H, Reddy MMRK, Dey RC, Jain J, Shakhatreh Z, Manandhar S, Neupane P, Waleed MS, Yadav R, Sah BK, Mahawa R. Exploring Transthyretin Amyloid Cardiomyopathy: A Comprehensive Review of the Disease and Upcoming Treatments. Curr Probl Cardiol 2024; 49:102057. [PMID: 37640179 DOI: 10.1016/j.cpcardiol.2023.102057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/31/2023]
Abstract
Transthyretin amyloid cardiomyopathy (ATTR-CM) is a mutation-based genetic disorder due to the accumulation of unstable transthyretin protein and presents with symptoms of congestive heart failure (CHF) and numerous extracardiac symptoms like carpal tunnel syndrome and neuropathy. Two subtypes of ATTR-CM are hereditary and wild-type, both of which have different risk factors, gender prevalence and major clinical symptoms. Timely usage of imaging modalities like echocardiography, cardiac magnetic imaging resonance, and cardiac scintigraphy has made it possible to suspect ATTR-CM in patients presenting with CHF. Management of ATTR-CM includes appropriate treatment for heart failure for symptomatic relief, prevention of arrhythmias and heart transplantation for nonresponders. With the recent approval of tafamidis in the successful management of ATTR-CM, numerous potential therapeutic points have been identified to stop or delay the progression of ATTR-CM. This article aims to provide a comprehensive review of ATTR-CM and insights into its novel therapeutics and upcoming treatments.
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Affiliation(s)
- Hritvik Jain
- Department of Internal Medicine, All India Institute of Medical Sciences, Jodhpur, India.
| | | | - Rohit Chandra Dey
- Department of Internal Medicine, Altai State Medical University, Barnaul, Russia
| | - Jyoti Jain
- Department of Internal Medicine, All India Institute of Medical Sciences, Jodhpur, India
| | - Zaid Shakhatreh
- Department of Internal Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Sarbagya Manandhar
- Department of Internal Medicine, Nepal Medical College, Kathmandu, Nepal
| | - Purushottam Neupane
- Department of Internal Medicine, Punjab Medical College, Faisalabad, Pakistan
| | | | - Rukesh Yadav
- Department of Internal Medicine, Maharajgunj Medical Campus, Tribhuvan University, Institute of Medicine, Maharajgunj, Nepal
| | - Biki Kumar Sah
- Department of Internal Medicine, B.P. Koirala Institute of Health Sciences, Dharan, Nepal
| | - Rukam Mahawa
- Department of Internal Medicine, Government Medical College, Amritsar, India
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3
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Lloyd JW, Anavekar NS, Oh JK, Miranda WR. Multimodality Imaging in Differentiating Constrictive Pericarditis From Restrictive Cardiomyopathy: A Comprehensive Overview for Clinicians and Imagers. J Am Soc Echocardiogr 2023; 36:1254-1265. [PMID: 37619909 DOI: 10.1016/j.echo.2023.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 07/27/2023] [Accepted: 08/14/2023] [Indexed: 08/26/2023]
Abstract
In the evaluation of heart failure, 2 differential diagnostic considerations include constrictive pericarditis and restrictive cardiomyopathy. The often outwardly similar clinical presentation of these 2 pathologic entities routinely renders their clinical distinction difficult. Consequently, initial assessment requires a keen understanding of their separate pathophysiology, epidemiology, and hemodynamic effects. Following a detailed clinical evaluation, further assessment initially rests on comprehensive echocardiographic investigation, including detailed Doppler evaluation. With the combination of mitral inflow characterization, tissue Doppler assessment, and hepatic vein interrogation, initial differentiation of constrictive pericarditis and restrictive cardiomyopathy is often possible with high sensitivity and specificity. In conjunction with a compatible clinical presentation, successful differentiation enables both an accurate diagnosis and subsequent targeted management. In certain cases, however, the diagnosis remains unclear despite echocardiographic assessment, and additional evaluation is required. With advances in noninvasive tools, such evaluation can often continue in a stepwise, algorithmic fashion noninvasively, including both cross-sectional and nuclear imaging. Should this additional evaluation itself prove insufficient, invasive assessment with appropriate expertise may ultimately be necessary.
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Affiliation(s)
- James W Lloyd
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | - Nandan S Anavekar
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | - Jae K Oh
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota
| | - William R Miranda
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota.
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4
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Brito D, Albrecht FC, de Arenaza DP, Bart N, Better N, Carvajal-Juarez I, Conceição I, Damy T, Dorbala S, Fidalgo JC, Garcia-Pavia P, Ge J, Gillmore JD, Grzybowski J, Obici L, Piñero D, Rapezzi C, Ueda M, Pinto FJ. World Heart Federation Consensus on Transthyretin Amyloidosis Cardiomyopathy (ATTR-CM). Glob Heart 2023; 18:59. [PMID: 37901600 PMCID: PMC10607607 DOI: 10.5334/gh.1262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 08/12/2023] [Indexed: 10/31/2023] Open
Abstract
Transthyretin amyloid cardiomyopathy (ATTR-CM) is a progressive and fatal condition that requires early diagnosis, management, and specific treatment. The availability of new disease-modifying therapies has made successful treatment a reality. Transthyretin amyloid cardiomyopathy can be either age-related (wild-type form) or caused by mutations in the TTR gene (genetic, hereditary forms). It is a systemic disease, and while the genetic forms may exhibit a variety of symptoms, a predominant cardiac phenotype is often present. This document aims to provide an overview of ATTR-CM amyloidosis focusing on cardiac involvement, which is the most critical factor for prognosis. It will discuss the available tools for early diagnosis and patient management, given that specific treatments are more effective in the early stages of the disease, and will highlight the importance of a multidisciplinary approach and of specialized amyloidosis centres. To accomplish these goals, the World Heart Federation assembled a panel of 18 expert clinicians specialized in TTR amyloidosis from 13 countries, along with a representative from the Amyloidosis Alliance, a patient advocacy group. This document is based on a review of published literature, expert opinions, registries data, patients' perspectives, treatment options, and ongoing developments, as well as the progress made possible via the existence of centres of excellence. From the patients' perspective, increasing disease awareness is crucial to achieving an early and accurate diagnosis. Patients also seek to receive care at specialized amyloidosis centres and be fully informed about their treatment and prognosis.
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Affiliation(s)
- Dulce Brito
- Department of Cardiology, Centro Hospitalar Universitário Lisboa Norte, CAML, CCUL@RISE, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Fabiano Castro Albrecht
- Dante Pazzanese Institute of Cardiology – Cardiac Amyloidosis Center Dante Pazzanese Institute, São Paulo, Brazil
| | | | - Nicole Bart
- St Vincent’s Hospital, Victor Chang Cardiac Research Institute, University of New South Wales, Sydney, Australia
| | - Nathan Better
- Cabrini Health, Malvern, Royal Melbourne Hospital, Parkville, Monash University and University of Melbourne, Victoria, Australia
| | | | - Isabel Conceição
- Department of Neurosciences and Mental Health, CHULN – Hospital de Santa Maria, Portugal
- Centro de Estudos Egas Moniz Faculdade de Medicina da Universidade de Lisboa Portugal, Portugal
| | - Thibaud Damy
- Department of Cardiology, DHU A-TVB, CHU Henri Mondor, AP-HP, INSERM U955 and UPEC, Créteil, France
- Referral Centre for Cardiac Amyloidosis, GRC Amyloid Research Institute, Reseau amylose, Créteil, France. Filière CARDIOGEN
| | - Sharmila Dorbala
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Cardiac Amyloidosis Program, Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- CV imaging program, Cardiovascular Division and Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Pablo Garcia-Pavia
- Hospital Universitario Puerta de Hierro Majadahonda, IDIPHISA, CIBERCV, Madrid, Spain
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Julian D. Gillmore
- National Amyloidosis Centre, University College London, Royal Free Campus, United Kingdom
| | - Jacek Grzybowski
- Department of Cardiomyopathy, National Institute of Cardiology, Warsaw, Poland
| | - Laura Obici
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | | | - Claudio Rapezzi
- Cardiovascular Institute, University of Ferrara, Ferrara, Italy
| | - Mitsuharu Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Japan
| | - Fausto J. Pinto
- Department of Cardiology, Centro Hospitalar Universitário Lisboa Norte, CAML, CCUL@RISE, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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5
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Schockling EJ, Farrell MB, Embry-Dierson M, Warren J, Jerome S. Cardiac Amyloidosis Imaging, Part 2: Quantification and Technical Considerations. J Nucl Med Technol 2023; 51:90-98. [PMID: 37268318 DOI: 10.2967/jnmt.123.265416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/29/2023] [Indexed: 06/04/2023] Open
Abstract
99mTc-pyrophosphate imaging has been around for a long time. In the 1970s, it was used to image recent myocardial infarction. However, it has recently been recognized for its value in detecting cardiac amyloidosis, leading to widespread use across the United States. Increased use led to considerable procedure variability. As the evidence base to support formal guidelines was being developed, experts from several professional medical societies issued imaging and interpretation recommendations titled "ASNC/AHA/ASE/EANM/HFSA/ISA/SCMR/SNMMI Expert Consensus Recommendations for Multimodality Imaging in Cardiac Amyloidosis: part 1 of 2-Evidence Base and Standardized Methods of Imaging." To reach a consensus on a protocol that would benefit the bulk of laboratories, the experts considered several parameters and radiotracer kinetics. The most critical parameters concerned injection-to-imaging delay and planar imaging versus SPECT. Accordingly, the standardized protocol recommends the injection of 370-740 MBq (10-20 mCi) of 99mTc-pyrophosphate with imaging 3 h later. Planar images of the chest are acquired in the anterior and lateral views accompanied by SPECT images. Both the planar and the SPECT images are used to semiquantitatively grade the degree of myocardial uptake compared with the amount of uptake in the ribs using a 0-3 scale. A grade of 2 or 3 on the SPECT images is considered positive for cardiac amyloidosis. The planar images are used to calculate a heart-to-contralateral-lung ratio. A ratio greater than 1.3 at 3 h helps to confirm the diagnosis of cardiac amyloid if the SPECT images have positive findings. This article is part of a 3-part series in this issue of the Journal of Nuclear Medicine Technology Part 1 details the etiology of cardiac amyloidosis and 99mTc-pyrophosphate imaging acquisition parameters. Part 2, this article, describes the procedure evolution over 50 y, image processing, and quantification. It further discusses radiotracer kinetics and 2 important technical considerations: injection-to-imaging delay and planar imaging versus SPECT. Part 3 covers study interpretation along with cardiac amyloidosis diagnosis and treatment.
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Affiliation(s)
- Eric J Schockling
- Outpatient Cardiovascular Diagnostics, Norton Healthcare, LLC, Louisville, Kentucky
| | | | | | | | - Scott Jerome
- University of Maryland School of Medicine, Westminster, Maryland
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6
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Farrell MB. Cardiac Amyloidosis Imaging. J Nucl Med Technol 2023; 51:99-101. [PMID: 37268323 DOI: 10.2967/jnmt.123.265538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
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Embry-Dierson M, Farrell MB, Schockling E, Warren J, Jerome S. Cardiac Amyloidosis Imaging, Part 1: Amyloidosis Etiology and Image Acquisition. J Nucl Med Technol 2023; 51:83-89. [PMID: 37268319 DOI: 10.2967/jnmt.123.265415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/16/2023] [Indexed: 06/04/2023] Open
Abstract
Cardiac amyloidosis is a systemic form of amyloidosis in which protein-based infiltrates are deposited in myocardial extracellular space. The accumulation of amyloid fibrils causes the myocardium to thicken and stiffen, leading to diastolic dysfunction and, eventually, heart failure. Until recently, cardiac amyloidosis was considered rare. However, the recent adoption of noninvasive diagnostic testing, including 99mTc-pyrophosphate imaging, has revealed a previously undiagnosed sizable disease prevalence. Light-chain amyloidosis (AL) and transthyretin amyloidosis (ATTR), the 2 primary types, account for 95% of cardiac amyloidosis diagnoses. AL results from plasma cell dyscrasia and has a very poor prognosis. The usual treatment for cardiac AL is chemotherapy and immunotherapy. Cardiac ATTR is more chronic, usually resulting from age-related instability and misfolding of the transthyretin protein. ATTR is treated by managing heart failure and using new pharmacotherapeutic drugs. 99mTc-pyrophosphate imaging can efficiently and effectively distinguish between ATTR and cardiac AL. Although the exact mechanism of myocardial 99mTc-pyrophosphate uptake is unknown, it is believed to bind to amyloid plaque microcalcifications. 99mTc-pyrophosphate imaging has a 97% sensitivity and nearly 100% sensitivity for identifying cardiac ATTR when the AL form of the disease is ruled out through serum free light-chain and serum and urine protein electrophoresis with immunofixation testing. Although there are no published 99mTc-pyrophosphate cardiac amyloidosis imaging guidelines, the American Society of Nuclear Cardiology, Society of Nuclear Medicine and Molecular Imaging, and others have published consensus recommendations to standardize test performance and interpretation. This article, part 1 of a 3-part series in this issue of the Journal of Nuclear Medicine Technology, describes amyloidosis etiology and cardiac amyloidosis characteristics, including the types, prevalence, signs and symptoms, and disease course. It further explains the scan acquisition protocol. Part 2 of the series focuses on image/data quantification and technical considerations. Finally, part 3 describes scan interpretation, along with the diagnosis and treatment of cardiac amyloidosis.
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Affiliation(s)
| | | | - Eric Schockling
- Outpatient Cardiovascular Diagnostics, Norton Healthcare, LLC, Louisville, Kentucky
| | | | - Scott Jerome
- University of Maryland School of Medicine, Westminster, Maryland
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Jerome S, Farrell MB, Warren J, Embry-Dierson M, Schockling EJ. Cardiac Amyloidosis Imaging, Part 3: Interpretation, Diagnosis, and Treatment. J Nucl Med Technol 2023; 51:102-116. [PMID: 37268322 DOI: 10.2967/jnmt.123.265492] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 04/10/2023] [Indexed: 06/04/2023] Open
Abstract
Cardiac amyloidosis was thought to be rare, undiagnosable, and incurable. However, recently it has been discovered to be common, diagnosable, and treatable. This knowledge has led to a resurgence in nuclear imaging with 99mTc-pyrophosphate-a scan once believed to be extinct-to identify cardiac amyloidosis, particularly in patients with heart failure but preserved ejection fraction. The renewed interest in 99mTc-pyrophosphate imaging has compelled technologists and physicians to reacquaint themselves with the procedure. Although 99mTc-pyrophosphate imaging is relatively simple, interpretation and diagnostic accuracy require an in-depth knowledge of amyloidosis etiology, clinical manifestations, disease progression, and treatment. Diagnosing cardiac amyloidosis is complicated because typical signs and symptoms are nonspecific and usually attributed to other cardiac disorders. In addition, physicians must be able to differentiate between monoclonal immunoglobulin light-chain amyloidosis (AL) and transthyretin amyloidosis (ATTR). Several clinical and noninvasive diagnostic imaging (echocardiography and cardiac MRI) red flags have been identified that suggest a patient may have cardiac amyloidosis. The intent of these red flags is to raise physician suspicion of cardiac amyloidosis and guide a series of steps (a diagnostic algorithm) for narrowing down and diagnosing the specific amyloid type. One element in the diagnostic algorithm is to identify monoclonal proteins indicative of AL. Monoclonal proteins are detected by serum or urine immunofixation electrophoresis and serum free light-chain assay. Another element is identifying and grading cardiac amyloid deposition using 99mTc-pyrophosphate imaging. When monoclonal proteins are present and the 99mTc-pyrophosphate scan is positive, the patient should be further evaluated for cardiac AL. The absence of monoclonal proteins and a positive 99mTc-pyrophosphate scan is diagnostic for cardiac ATTR. Patients with cardiac ATTR need to undergo genetic testing to differentiate between wild-type ATTR and variant ATTR. This article is the third in a 3-part series in this issue of the Journal of Nuclear Medicine Technology Part 1 reviewed amyloidosis etiology and outlined 99mTc-pyrophosphate study acquisition. Part 2 described 99mTc-pyrophosphate image quantification and protocol technical considerations. This article discusses scan interpretation along with cardiac amyloidosis diagnosis and treatment.
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Affiliation(s)
- Scott Jerome
- University of Maryland School of Medicine, Westminster, Maryland
| | | | | | | | - Eric J Schockling
- Outpatient Cardiovascular Diagnostics, Norton Healthcare, LLC, Louisville, Kentucky
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Shetty M, Malhotra S. Novel Tracers for the Imaging of Cardiac Amyloidosis. J Nucl Med Technol 2023:jnmt.123.265568. [PMID: 37192820 DOI: 10.2967/jnmt.123.265568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/14/2023] [Indexed: 05/18/2023] Open
Abstract
Radionuclide scintigraphy with technetium-labeled bisphosphonates has brought a paradigm shift in diagnosing cardiac amyloidosis (CA), with transthyretin CA now being effectively diagnosed without the need for tissue biopsy. Yet, deficits remain, such as methods for the noninvasive diagnosis of light-chain CA, means to detect CA early, prognostication, monitoring, and therapy response assessment. To address these issues, there has been growing interest in the development and implementation of amyloid-specific radiotracers for PET. The aim of this review is to educate the reader on these novel imaging tracers. Though still investigational, these novel tracers-given their many advantages-are clearly the future of nuclear imaging in CA.
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Affiliation(s)
- Mrinali Shetty
- Columbia University Irving Medical Center, New York, New York; and
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Martin EB, Stuckey A, Powell D, Lands R, Whittle B, Wooliver C, Macy S, Foster JS, Guthrie S, Kennel SJ, Wall JS. Clinical Confirmation of Pan-Amyloid Reactivity of Radioiodinated Peptide 124I-p5+14 (AT-01) in Patients with Diverse Types of Systemic Amyloidosis Demonstrated by PET/CT Imaging. Pharmaceuticals (Basel) 2023; 16:629. [PMID: 37111386 PMCID: PMC10144944 DOI: 10.3390/ph16040629] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/14/2023] [Accepted: 04/16/2023] [Indexed: 04/29/2023] Open
Abstract
There are at least 20 distinct types of systemic amyloidosis, all of which result in the organ-compromising accumulation of extracellular amyloid deposits. Amyloidosis is challenging to diagnose due to the heterogeneity of the clinical presentation, yet early detection is critical for favorable patient outcomes. The ability to non-invasively and quantitatively detect amyloid throughout the body, even in at-risk populations, before clinical manifestation would be invaluable. To this end, a pan-amyloid-reactive peptide, p5+14, has been developed that is capable of binding all types of amyloid. Herein, we demonstrate the ex vivo pan-amyloid reactivity of p5+14 by using peptide histochemistry on animal and human tissue sections containing various types of amyloid. Furthermore, we present clinical evidence of pan-amyloid binding using iodine-124-labeled p5+14 in a cohort of patients with eight (n = 8) different types of systemic amyloidosis. These patients underwent PET/CT imaging as part of the first-in-human Phase 1/2 clinical trial evaluating this radiotracer (NCT03678259). The uptake of 124I-p5+14 was observed in abdominothoracic organs in patients with all types of amyloidosis evaluated and was consistent with the disease distribution described in the medical record and literature reports. On the other hand, the distribution in healthy subjects was consistent with radiotracer catabolism and clearance. The early and accurate diagnosis of amyloidosis remains challenging. These data support the utility of 124I-p5+14 for the diagnosis of varied types of systemic amyloidosis by PET/CT imaging.
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Affiliation(s)
- Emily B. Martin
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
| | - Alan Stuckey
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
| | - Dustin Powell
- Department of Radiology, University of Tennessee Medical Center, Knoxville, TN 37920, USA
| | - Ronald Lands
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
| | - Bryan Whittle
- Department of Radiology, University of Tennessee Medical Center, Knoxville, TN 37920, USA
| | - Craig Wooliver
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
| | - Sallie Macy
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
| | - James S. Foster
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
| | | | - Stephen J. Kennel
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
| | - Jonathan S. Wall
- Department of Medicine, University of Tennessee Graduate School of Medicine, Knoxville, TN 37920, USA (J.S.F.); (S.J.K.); (J.S.W.)
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11
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Wlodarski R, Seibert K, Issa NP, O'Brien-Penney B, Soliven B, Sarswat N, Appelbaum D, Rezania K. 99m Technetium-pyrophosphate bone scan: A potential biomarker for the burden of transthyretin amyloidosis in skeletal muscle: A preliminary study. Muscle Nerve 2023; 67:111-116. [PMID: 36222831 PMCID: PMC10092886 DOI: 10.1002/mus.27740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 09/26/2022] [Accepted: 10/04/2022] [Indexed: 01/25/2023]
Abstract
INTRODUCTION/AIMS Transthyretin amyloidosis (ATTR) proteins can infiltrate skeletal muscle and infrequently cause a myopathy. 99m Technetium-pyrophosphate (99m Tc-PYP) is a validated biomarker for cardiac involvement in variant and wild-type ATTR (ATTRv and ATTRwt, respectively). The aim of this study was to test the hypothesis that 99m Tc-PYP is a biomarker for muscle burden of ATTR. METHODS Radioisotope uptake in the deltoid muscles of patients with ATTR was compared to uptake in control subjects without amyloidosis in a retrospective study. 99m Tc-PYP scans were evaluated in 11 patients with ATTR (7 ATTRv, 4 ATTRwt) and 14 control subjects. Mean count (MC) values were measured in circular regions of interest (ROIs) 2.5-3.8 cm2 in area. Tracer uptake was quantified in the heart, contralateral chest (CC), and deltoid muscles. RESULTS Tracer uptake was significantly higher over the deltoids and heart but not the CC, in patients with ATTR than in control subjects. MC values were 120.1 ± 43.7 (mean ± SD) in ATTR patients and 78.9 ± 20.4 in control subjects over the heart (p = 0.005), 73.3± 21.0 and 63.5 ± 14.4 over CC (p = 0.09), and 37.0 ± 11.7 and 26.0 ± 7.1 averaged over both deltoid muscles (p = 0.014). DISCUSSION 99m Tc-PYP is a potential biomarker for ATTR amyloid burden in skeletal muscle.
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Affiliation(s)
- Richard Wlodarski
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
| | - Kaitlin Seibert
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
| | - Naoum P Issa
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
| | | | - Betty Soliven
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
| | - Nitasha Sarswat
- Department of Medicine, Section of Cardiology, University of Chicago, Chicago, Illinois, USA
| | - Daniel Appelbaum
- Department of Radiology, University of Chicago, Chicago, Illinois, USA
| | - Kourosh Rezania
- Department of Neurology, University of Chicago, Chicago, Illinois, USA
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12
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Avalon JC, Fuqua J, Deskins S, Miller T, Conte J, Martin D, Marano G, Yanamala N, Mills J, Bianco C, Patel B, Seetharam K, Raylman R, Sengupta PP, Hamirani YS. Quantitative single photon emission computed tomography derived standardized uptake values on 99mTc-PYP scan in patients with suspected ATTR cardiac amyloidosis. J Nucl Cardiol 2023; 30:127-139. [PMID: 35655113 DOI: 10.1007/s12350-022-02988-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 04/02/2022] [Indexed: 01/15/2023]
Abstract
Technetium-99 pyrophosphate scintigraphy (99mTc-PYP) provides qualitative and semiquantitative diagnosis of ATTR cardiac amyloidosis (ATTR-CA) using the Perugini scoring system and heart/contralateral heart ratio (H/CL) on planar imaging. Standardized uptake values (SUV) with quantitative single photon emission computed tomography (xSPECT/CT) can offer superior diagnostic accuracy and quantification through precise myocardial contouring that enhances assessment of ATTR-CA burden. We examined the correlation of xSPECT/CT SUVs with Perugini score and H/CL ratio. We also assessed SUV correlation with cardiac magnetic resonance (CMR), echocardiographic, and baseline clinical characteristics. Retrospective review of 78 patients with suspected ATTR-CA that underwent 99mTc-PYP scintigraphy with xSPECT/CT. Patients were grouped off Perugini score (Grade 0-1 and Grade 2-3), H/CL ratio (≥ 1.5 and < 1.5). Two cohorts were also created: myocardium SUVmax > 1.88 and ≤ 1.88 at 1-hour based off an AUC curve with 1.88 showing the greatest sensitivity and specificity. Cardiac SUV retention index was calculated as [SUVmax myocardium/SUVmax vertebrae] × SUVmax paraspinal muscle. Primary outcome was myocardium SUVmax at 1-hour correlation with Perugini grades, H/CL ratio, CMR, and echocardiographic data. Higher Perugini Grades corresponded with higher myocardium SUVmax values, especially when comparing Perugini Grade 3 to Grade 2 and 1 (3.03 ± 2.1 vs 0.59 ± 0.97 and 0.09 ± 0.2, P < 0.001). Additionally, patients with H/CL ≥ 1.5 had significantly higher myocardium SUVmax compared to patients with H/CL ≤ 1.5 (2.92 ± 2.18 vs 0.35 ± 0.60, P < 0.01). Myocardium SUVmax at 1-hour strongly correlated with ECV (r = 0.91, P = 0.001), pre-contrast T1 map values (r = 0.66, P = 0.037), and left ventricle mass index (r = 0.80, P = 0.002) on CMR. SUVs derived from 99mTc-PYP scintigraphy with xSPECT/CT provides a discriminatory and quantitative method to diagnose and assess ATTR-CA burden. These findings strongly correlate with CMR.
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Affiliation(s)
| | - Jacob Fuqua
- School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Seth Deskins
- School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Tyler Miller
- School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Justin Conte
- School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Daniel Martin
- Department of Radiology, West Virginia University, Morgantown, WV, USA
| | - Gary Marano
- Department of Radiology, West Virginia University, Morgantown, WV, USA
| | - Naveena Yanamala
- Heart and Vascular Institute, West Virginia University, 1 Medical Center Dr, Morgantown, WV, 26506, USA
| | - James Mills
- Heart and Vascular Institute, West Virginia University, 1 Medical Center Dr, Morgantown, WV, 26506, USA
| | - Christopher Bianco
- Heart and Vascular Institute, West Virginia University, 1 Medical Center Dr, Morgantown, WV, 26506, USA
| | - Brijesh Patel
- Heart and Vascular Institute, West Virginia University, 1 Medical Center Dr, Morgantown, WV, 26506, USA
| | - Karthik Seetharam
- Heart and Vascular Institute, West Virginia University, 1 Medical Center Dr, Morgantown, WV, 26506, USA
| | - Raymond Raylman
- Department of Radiology, West Virginia University, Morgantown, WV, USA
| | - Partho P Sengupta
- Division of Cardiovascular Disease and Hypertension, Rutgers Robert Wood Johnson Medical School, 125 Patterson St, New Brunswick, NJ, 08901, USA
| | - Yasmin S Hamirani
- Heart and Vascular Institute, West Virginia University, 1 Medical Center Dr, Morgantown, WV, 26506, USA.
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Radiolabeled Thioflavin-T Derivative PET Imaging for the Assessment of Cardiac Amyloidosis. Curr Cardiol Rep 2022; 24:1883-1891. [PMID: 36378483 DOI: 10.1007/s11886-022-01811-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/13/2022] [Indexed: 11/16/2022]
Abstract
PURPOSE OF REVIEW Cardiac amyloidosis (CA) is an often under-recognized cause of heart failure with preserved ejection fraction. The goal of the current paper was to review imaging modalities available for detecting cardiac amyloidosis. We wished to determine what modalities are available for the diagnosis of cardiac amyloidosis and what modalities could be utilized in the future. RECENT FINDINGS Early and delayed planar imaging of the chest currently plays a central role in the workup and diagnosis of CA. However, novel positron emission tomography (PET) tracers could play a large role in CA imaging in the future. There is an increasing body of literature supporting the use of targeted amyloid-binding PET radiotracers such as 11C-Pittsburgh compound B (11C-PIB), 18F-florbetapir, -flutemetamol, and -florbetaben for the detection of cardiac amyloid. While planar imaging currently plays a large role in the workup of CA, PET imaging could play an increasing important role in the future. The quantitative abilities of novel PET tracers could theoretically allow for the serial monitoring of patients and detection of response to therapy, and the sensitive nature of the tracers could allow for even earlier disease detection. Further work with large randomized controlled trial data is needed in the development and validation of PET tracers for cardiac amyloid and represents an exciting development within the realm of nuclear cardiology.
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Bae S, Gil J, Paeng JC, Park EA, Lee SP, Choi H, Kang KW, Cheon GJ, Lee DS. Reliability and feasibility of visual grading systems and quantitative indexes on [ 99mTc]Tc-DPD imaging for cardiac amyloidosis. Sci Rep 2022; 12:17271. [PMID: 36241893 PMCID: PMC9568548 DOI: 10.1038/s41598-022-21603-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 09/29/2022] [Indexed: 01/06/2023] Open
Abstract
We aimed to evaluate the reliability and feasibility of visual grading systems and various quantitative indexes of [99mTc]Tc-DPD imaging for cardiac amyloidosis (CA). Patients who underwent [99mTc]Tc-DPD imaging with suspicion of CA were enrolled. On the planar image, myocardial uptake was visually graded using Perugini's and Dorbala's methods (PS and DS). As [99mTc]Tc-DPD indexes, heart-to-whole body ratio (H/WB) and heart-to-contralateral lung ratio (H/CL) were measured on planar image. SUVmax, SUVmean, total myocardial uptake (TMU), and C-index were measured on SPECT/CT. Inter-observer agreement of the indexes and their association with visual grading and clinical factors were evaluated. A total of 152 [99mTc]Tc-DPD images, of which 18 were positive, were analyzed. Inter-observer agreement was high for both DS (κ = 0.95) and PS (κ = 0.96). However, DS showed a higher correlation with quantitative indexes than PS. Inter-observer agreement was also high for SPECT/CT indexes, particularly SUVmax. SUVmax was significantly different between different DS groups (P = 0.014-0.036), and showed excellent correlations with H/WB and H/CL (r = 0.898 and 0.910). SUVmax also showed significant differences between normal, AL, and ATTR pathology (P = 0.022-0.037), and a significant correlation with extracellular volume on cardiac MRI (r = 0.772, P < 0.001). DS is a visual grading system for CA that is more significantly matched with quantitative indexes than PS. SUVmax is a reliable quantitative index on SPECT/CT, with a high inter-observer agreement, correlations with the visual grade, and potential association with cardiac MRI findings.
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Affiliation(s)
- Sungwoo Bae
- grid.31501.360000 0004 0470 5905Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
| | - Joonhyung Gil
- grid.31501.360000 0004 0470 5905Department of Nuclear Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080 Republic of Korea
| | - Jin Chul Paeng
- grid.31501.360000 0004 0470 5905Department of Nuclear Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080 Republic of Korea
| | - Eun-Ah Park
- grid.412484.f0000 0001 0302 820XDepartment of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Seung-Pyo Lee
- grid.412484.f0000 0001 0302 820XDepartment of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Hongyoon Choi
- grid.31501.360000 0004 0470 5905Department of Nuclear Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080 Republic of Korea
| | - Keon Wook Kang
- grid.31501.360000 0004 0470 5905Department of Nuclear Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080 Republic of Korea ,grid.31501.360000 0004 0470 5905Institute of Radiation Medicine, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Gi Jeong Cheon
- grid.31501.360000 0004 0470 5905Department of Nuclear Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080 Republic of Korea ,grid.31501.360000 0004 0470 5905Institute of Radiation Medicine, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Dong Soo Lee
- grid.31501.360000 0004 0470 5905Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea ,grid.31501.360000 0004 0470 5905Department of Nuclear Medicine, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080 Republic of Korea
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15
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Nuclear Molecular Imaging of Disease Burden and Response to Treatment for Cardiac Amyloidosis. BIOLOGY 2022; 11:biology11101395. [PMID: 36290299 PMCID: PMC9598720 DOI: 10.3390/biology11101395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Cardiac amyloidosis (CA) is characterized by extracellular infiltration and deposition of amyloid fibrils primarily derived from the circulating transthyretin protein (TTR) or immunoglobulin light chain (AL). With the development of non-invasive diagnostic approaches and the emergence of new pharmacotherapeutic treatments for CA, the transformative effects of bone scintigraphy have been important in diagnosing TTR-CA. Positron emission tomography (PET) imaging is another promising, non-invasive option for the diagnosis of CA and may help differentiate between ATTR and AL amyloidosis. Bone-seeking single-photon emission tomography/computed tomography (SPECT/CT) quantification and amyloid-targeting PET imaging could be useful as a new strategy for disease burden and therapy monitoring to provide more insights into therapy response assessed by quantifying the amyloid burden in CA. Abstract Cardiac amyloidosis (CA) is a heterogeneous group of diseases in which extracellular insoluble amyloid proteins are deposited in specific organs and tissues locally or systemically, thereby interfering with physiological function. Transthyretin protein (TTR) and light chain (AL) amyloidosis are the most common types of cardiac amyloidosis. Radionuclide bone scintigraphy has recently become the most common non-invasive test for the diagnosis of TTR-CA but is of limited value for the diagnosis of AL-CA. PET has proved promising for the diagnosis of CA and its applications are expected to expand in the future. This review summarizes the current bone scintigraphy and amyloid-targeting Positron emission tomography (PET) imaging, the binding imaging properties of radiotracers, and the values of diagnosis, prognosis, and monitoring therapy response in CA.
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Velaga J, Liew C, Choo Poh AC, Lee PT, Lath N, Low SC, Bharadwaj P. Multimodality Imaging in the Diagnosis and Assessment of Cardiac Amyloidosis. World J Nucl Med 2022; 21:173-183. [PMID: 36060088 PMCID: PMC9436521 DOI: 10.1055/s-0042-1751057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Amyloidosis is a rare disorder where abnormal protein aggregates are deposited in tissues forming amyloid fibrils, leading to progressive organ failure. Although any organ can be affected, cardiac involvement is the main cause of morbidity and mortality associated with amyloidosis as diagnosis is often delayed due to the indolent nature of the disease in some forms. An early diagnosis of disease and knowledge of the type/subtype of cardiac amyloidosis (CA) are essential for appropriate management and better outcome. Echocardiography is often the first line of investigation for patients suspected of CA and offers superior hemodynamic assessment. Although cardiovascular magnetic resonance (CMR) imaging is not diagnostic of CA, it provides vital clues to diagnosis and has a role in disease quantification and prognostication. Radiolabeled bone seeking tracers are the mainstay of diagnosis of CA and when combined with screening of monoclonal light chains, bone scintigraphy offers high sensitivity in diagnosing transthyretin type of CA. This review aims to describe the noninvasive imaging assessment and approach to diagnosis of patients with suspected CA. Imaging features of echocardiography, nuclear scintigraphy, and CMR are described with a brief mention on computed tomography.
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Affiliation(s)
- Jyothirmayi Velaga
- Department of Diagnostic Radiology, Singapore General Hospital, Singapore, Singapore
| | - Charlene Liew
- Department of Radiology, Changi General Hospital, Singapore, Singapore
| | | | | | - Narayan Lath
- Department of Diagnostic Radiology, Singapore General Hospital, Singapore, Singapore
| | - Shoen Choon Low
- Department of Diagnostic Radiology, Singapore General Hospital, Singapore, Singapore
| | - Pushan Bharadwaj
- Department of Nuclear Medicine and Molecular Imaging, Singapore General Hospital, Singapore
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Gosling RC, Al-Mohammad A. The Role of Cardiac Imaging in Heart Failure with Reduced Ejection Fraction. Card Fail Rev 2022; 8:e22. [PMID: 35815258 PMCID: PMC9253963 DOI: 10.15420/cfr.2021.33] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 03/21/2022] [Indexed: 11/30/2022] Open
Abstract
Heart failure (HF) is a major health burden associated with significant morbidity and mortality. Approximately half of all HF patients have reduced ejection fraction (left ventricular ejection fraction <40%) at rest (HF with reduced ejection fraction). The aetiology of HF is complex, and encompasses a wide range of cardiac conditions, hereditary defects and systemic diseases. Early identification of aetiology is important to allow personalised treatment and prognostication. Cardiac imaging has a major role in the assessment of patients with HF with reduced ejection fraction, and typically incorporates multiple imaging modalities, each with unique but complimentary roles. In this review, the comprehensive role of cardiac imaging in the diagnosis, assessment of aetiology, treatment planning and prognostication of HF with reduced ejection fraction is discussed.
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Affiliation(s)
- Rebecca C Gosling
- Department of Cardiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK; Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Abdallah Al-Mohammad
- Department of Cardiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK; Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
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18
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Advanced Imaging in Cardiac Amyloidosis. Biomedicines 2022; 10:biomedicines10040903. [PMID: 35453653 PMCID: PMC9030502 DOI: 10.3390/biomedicines10040903] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/09/2022] [Accepted: 04/13/2022] [Indexed: 02/05/2023] Open
Abstract
This review serves as a synopsis of multimodality imaging in cardiac amyloidosis (CA), which is a disease characterized by deposition of misfolded protein fragments in the heart. It emphasizes and summarizes the diagnostic possibilities and their prognostic values. In general, echocardiography is the first diagnostic tool in patients with an identified systemic disease or unclear left ventricular hypertrophy. Several echocardiographic parameters will raise suspicion and lead to further testing. Cardiac magnetic resonance and scintigraphy with bone avid radiotracers are crucial for diagnosis of CA and even enable a distinction between different subtypes. The subject is illuminated with established guidelines and innovative recent publications to further improve early diagnosis of cardiac amyloidosis in light of current treatment options.
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19
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Bogunovic N, Farr M, Pirl L, Piper C, Rudolph V, Roder F. Multi-parametric speckle tracking analyses to characterize cardiac amyloidosis: a comparative study of systolic left ventricular longitudinal myocardial mechanics. Heart Vessels 2022; 37:1526-1540. [PMID: 35357543 PMCID: PMC9349311 DOI: 10.1007/s00380-022-02047-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/18/2022] [Indexed: 12/02/2022]
Abstract
Cardiac amyloidosis (CAM), the most common cardiac storage disease is associated with significant changes in left-ventricular (LV) morphology and function. To gain particular insights into LV systolic longitudinal myocardial mechanics we investigated seven parameters derived by speckle-tracking-echocardiography (STE) in patients with confirmed CAM (n = 59). The results were compared with those of individuals with healthy heart (n = 150) and another primary myocardial disease with also thickened myocardium and severe diastolic and systolic LV-dysfunction (symptomatic LV-non-compaction-cardiomyopathy, LV-NC, n = 30). In addition to standard echocardiographical measures, the STE-derived data were evaluated and documented utilizing polar-diagrams to obtain overviews of longitudinal myocardial mechanics of the entire LV. Compared with healthy individuals, patients with CAM and LV-NC showed significantly reduced LV-ejection-fraction (EF), global longitudinal systolic peak-strain, strain-rate, and displacement. Pre-systolic stretch-index, post-systolic index, and the EF/global peak-longitudinal-strain-ratio (EF/S) were increased. In contrast to healthy-hearts and the LV-NC group only patients with CAM demonstrated significantly reduced time-to-peak systolic longitudinal strain and time-to-peak strain-rate. Although the level of the segmental values in longitudinal mechanics was significantly different between the groups, comparable intraventricular baso-apical parameter-gradients were found for systolic longitudinal peak-strain and strain-rate, pre-systolic-stretch-index, post-systolic-index, and peak systolic displacement. Compared to ATTR-amyloidosis (ATTR-CAM), patients with AL-amyloidosis (AL-CAM) demonstrated significantly lower end-diastolic and end-systolic LV-volumes, LV-mass-indices, relative apical strain, time-to-peak systolic longitudinal strain, and time-to-peak longitudinal strain-rate. CAM and LV-NC demonstrated altered myocardial mechanics with significantly different STE-derived echocardiographical parameters. ATTR-amyloidosis and AL-amyloidosis had at least significantly different time-to-peak strain, time-to-peak strain-rate and relative apical sparing values.
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Affiliation(s)
- Nikola Bogunovic
- Clinic for General and Interventional Cardiology/Angiology, Herz-und Diabeteszentrum Nordrhein-Westfalen, Ruhr Universität Bochum, Georgstraße 11, 32545, Bad Oeynhausen, NRW, Germany.
| | - Martin Farr
- Clinic for General and Interventional Cardiology/Angiology, Herz-und Diabeteszentrum Nordrhein-Westfalen, Ruhr Universität Bochum, Georgstraße 11, 32545, Bad Oeynhausen, NRW, Germany
| | - Lukas Pirl
- Institut Für Röntgendiagnostik und Nuklearmedizin, Klinikum Braunschweig, Braunschweig, Germany
| | - Cornelia Piper
- Clinic for General and Interventional Cardiology/Angiology, Herz-und Diabeteszentrum Nordrhein-Westfalen, Ruhr Universität Bochum, Georgstraße 11, 32545, Bad Oeynhausen, NRW, Germany
| | - Volker Rudolph
- Clinic for General and Interventional Cardiology/Angiology, Herz-und Diabeteszentrum Nordrhein-Westfalen, Ruhr Universität Bochum, Georgstraße 11, 32545, Bad Oeynhausen, NRW, Germany
| | - Fabian Roder
- Clinic for General and Interventional Cardiology/Angiology, Herz-und Diabeteszentrum Nordrhein-Westfalen, Ruhr Universität Bochum, Georgstraße 11, 32545, Bad Oeynhausen, NRW, Germany
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20
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Bi X, Xu B, Liu J, Wang G, An J, Zhang X, Wang R, Dong W, Guan Z. Diagnostic Value of 11C-PIB PET/MR in Cardiac Amyloidosis. Front Cardiovasc Med 2022; 9:830572. [PMID: 35369284 PMCID: PMC8966842 DOI: 10.3389/fcvm.2022.830572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThe thioflavin T derivative, 11C-Pittsburgh-B (PIB), is used for Alzheimer's disease imaging because it specifically binds to β-amyloid protein deposits in the brain. The aim of this study was to estimate the diagnostic value of combined 11C-PIB positron emission tomography/magnetic resonance (PET/MR) in cardiac amyloidosis (CA).MethodsWe enrolled 23 heart failure patients with suspected CA based on echocardiographic and electrocardiograph findings. All patients underwent cardiac 11C-PIB PET/MR and non-cardiac biopsy within one week. We also enrolled eight healthy volunteers that underwent cardiac 11C-PIB PET/MR as a control group. The cardiac magnetic resonance (CMR) protocol included cine imaging, late gadolinium enhancement (LGE), and native and post-contrast T1 mapping. Extracellular volume (ECV) was measured using pre- and post-contrast T1 mapping images. LVEF, IVSD, LVPW, LVmass, LVESV, LVEDV, native T1 value, ECV, and maximum uptake of myocardial tissue-to-blood background ratio (TBR) values were obtained from PET/MR images in all patients and healthy subjects.ResultsThirteen out of twenty-three heart failure patients were clinically diagnosed with CA. The remaining 10 patients were CA-negative (non-CA patient group). Twelve of the thirteen CA patients showed diffuse transmural LGE patterns, whereas LGE was either absent or patchy in the non-CA patients. The diagnostic sensitivity and specificity of TBRmax were 92.3 and 100%, respectively, at a cut-off value of 1.09. Several CMR imaging parameters (LVEF, IVSD, LVmass, LVEDV, LVESV, LVPW, native T1 value and ECV) and TBR showed significant differences between CA patients, non-CA patients, and healthy controls (P < 0.05). Native T1 mapping values positively correlated with TBRmax values in CA and non-CA patients (r = 0.38, P = 0.0004).Conclusions11C-PIB PET/MRI is a valuable tool for the accurate and non-invasive diagnosis of CA because it distinguishes CA patients from non-CA patients and healthy subjects with high specificity and sensitivity. Moreover, native T1 mapping values positively correlated with TBRmax values in CA and non-CA patients. In the future, larger cohort studies are necessary to confirm our findings.
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Affiliation(s)
- Xiao Bi
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Baixuan Xu
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
- Baixuan Xu
| | - Jiajin Liu
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Guanyun Wang
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Jing An
- Department of Cardiology, The Sixth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Xiaojun Zhang
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Ruimin Wang
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Wei Dong
- Siemens Healthcare Ltd., Guangdong, China
- Wei Dong
| | - Zhiwei Guan
- Department of Nuclear Medicine, The First Medical Centre, Chinese PLA General Hospital, Beijing, China
- National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
- *Correspondence: Zhiwei Guan
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21
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Cardiac amyloidosis. Curr Opin Cardiol 2022; 37:272-284. [DOI: 10.1097/hco.0000000000000953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Joury A, Faaborg-Andersen C, Quintana RA, daSilva-deAbreu A, Nativi-Nicolau J. Diagnostic Tools for Cardiac Amyloidosis: A Pragmatic Comparison of Pathology, Imaging and Laboratories. Curr Probl Cardiol 2022; 48:101106. [PMID: 35007639 DOI: 10.1016/j.cpcardiol.2022.101106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/03/2022] [Indexed: 01/01/2023]
Abstract
Cardiac amyloidosis (CA) is a complex disease considered to be the most common underdiagnosed form of restrictive cardiomyopathy. Accumulation of misfolded proteins called amyloid fibrils in the extracellular space results in clinical deterioration and late diagnosis is associated with morbidity and mortality. Both types of this disease, light chain CA and transthyretin-related CA share many cardiac and extracardiac features that compromise multiple organs such as kidneys, musculoskeletal system, autonomic nervous system, and gastrointestinal tract. Early diagnosis and detection of CA are imperative. Clinicians should maintain a high degree of suspicion among patients with unexplained diastolic heart failure to implement different disease-altering therapies at the early stages of the disease. In this article, we provided a comprehensive review of multiple invasive and non-invasive cardiac imaging modalities with their respective degrees of sensitivities and specificity.
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Affiliation(s)
- Abdulaziz Joury
- John Ochsner Heart and Vascular Institute, Ochsner Medical Center, New Orleans, LA; King Salman Heart Center, King Fahd Medical City, Riyadh, Saudi Arabia
| | | | - Raymundo A Quintana
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA
| | - Adrian daSilva-deAbreu
- Section of Cardiovascular Medicine, Yale University School of Medicine, New Haven, CT; Heart and Vascular Center, Yale-New Haven Hospital, New Haven, CT
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23
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Patel KP, Scully PR, Nitsche C, Kammerlander AA, Joy G, Thornton G, Hughes R, Williams S, Tillin T, Captur G, Chacko L, Kelion A, Sabharwal N, Newton JD, Kennon S, Ozkor M, Mullen M, Hawkins PN, Gillmore JD, Menezes L, Pugliese F, Hughes AD, Fontana M, Lloyd G, Treibel TA, Mascherbauer J, Moon JC. Impact of afterload and infiltration on coexisting aortic stenosis and transthyretin amyloidosis. Heart 2022; 108:67-72. [PMID: 34497140 DOI: 10.1136/heartjnl-2021-319922] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/23/2021] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE The coexistence of wild-type transthyretin cardiac amyloidosis (ATTR) is common in patients with severe aortic stenosis (AS) undergoing transcatheter aortic valve implantation (TAVI). However, the impact of ATTR and AS on the resultant AS-ATTR is unclear and poses diagnostic and management challenges. We therefore used a multicohort approach to evaluate myocardial structure, function, stress and damage by assessing age-related, afterload-related and amyloid-related remodelling on the resultant AS-ATTR phenotype. METHODS We compared four samples (n=583): 359 patients with AS, 107 with ATTR (97% Perugini grade 2), 36 with AS-ATTR (92% Perugini grade 2) and 81 age-matched and ethnicity-matched controls. 99mTc-3,3-diphosphono-1,2-propanodicarboxylic acid (DPD) scintigraphy was used to diagnose amyloidosis (Perugini grade 1 was excluded). The primary end-point was NT-pro Brain Natriuretic Peptide (BNP) and secondary end-points related to myocardial structure, function and damage. RESULTS Compared with older age controls, the three disease cohorts had greater cardiac remodelling, worse function and elevated NT-proBNP/high-sensitivity Troponin-T (hsTnT). NT-proBNP was higher in AS-ATTR (2844 (1745, 4635) ng/dL) compared with AS (1294 (1077, 1554)ng/dL; p=0.002) and not significantly different to ATTR (3272 (2552, 4197) ng/dL; p=0.63). Diastology, hsTnT and prevalence of carpal tunnel syndrome were statistically similar between AS-ATTR and ATTR and higher than AS. The left ventricular mass indexed in AS-ATTR was lower than ATTR (139 (112, 167) vs 180 (167, 194) g; p=0.013) and non-significantly different to AS (120 (109, 130) g; p=0.179). CONCLUSIONS The AS-ATTR phenotype likely reflects an early stage of amyloid infiltration, but the combined insult resembles ATTR. Even after treatment of AS, ATTR-specific therapy is therefore likely to be beneficial.
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Affiliation(s)
- Kush P Patel
- Institute of Cardiovascular Science, University College London, London, UK
- Department of Cardiology, Barts Heart Centre, London, UK
| | - Paul Richard Scully
- Institute of Cardiovascular Science, University College London, London, UK
- Department of Cardiology, Barts Heart Centre, London, UK
| | - Christian Nitsche
- Department of Internal Medicine, Medical University of Vienna, Wien, Austria
| | | | - George Joy
- Cardiac Imaging Department, Barts Heart Centre, London, UK
| | - George Thornton
- Institute of Cardiovascular Science, University College London, London, UK
- Cardiac Imaging Department, Barts Heart Centre, London, UK
| | - Rebecca Hughes
- Institute of Cardiovascular Science, University College London, London, UK
- Cardiac Imaging Department, Barts Heart Centre, London, UK
| | | | | | - Gabriella Captur
- Institute of Cardiovascular Science, University College London, London, UK
- MRC Unit for Lifelong Health and Ageing, London, UK
| | | | - Andrew Kelion
- Department of Cardiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Nikant Sabharwal
- Department of Cardiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - James D Newton
- Department of Cardiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Simon Kennon
- Department of Cardiology, Barts Heart Centre, London, UK
| | - Mick Ozkor
- Department of Cardiology, Barts Heart Centre, London, UK
| | - Michael Mullen
- Department of Cardiology, Barts Heart Centre, London, UK
| | | | | | - Leon Menezes
- Department of Cardiology, Barts Heart Centre, London, UK
| | - Francesca Pugliese
- Department of Cardiology, Barts Heart Centre, London, UK
- Advanced Cardiovascular Imaging, William Harvey Research Institute, The London Chest Hospital, London, UK
| | | | | | - Guy Lloyd
- Department of Cardiology, Barts Heart Centre, London, UK
| | - Thomas A Treibel
- Institute of Cardiovascular Science, University College London, London, UK
- Department of Cardiology, Barts Heart Centre, London, UK
| | | | - James C Moon
- Institute of Cardiovascular Science, University College London, London, UK
- Department of Cardiology, Barts Heart Centre, London, UK
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24
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Westin O, Butt JH, Gustafsson F, Schou M, Salomo M, Køber L, Maurer M, Fosbøl EL. Two Decades of Cardiac Amyloidosis: A Danish Nationwide Study. JACC: CARDIOONCOLOGY 2021; 3:522-533. [PMID: 34729524 PMCID: PMC8543084 DOI: 10.1016/j.jaccao.2021.05.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/26/2021] [Indexed: 12/17/2022]
Abstract
Background Cardiac amyloidosis (CA) has been associated with poor outcomes. Screening studies suggest that CA is overlooked-especially in the elderly. Recent advances in treatment have brought attention to the disease, but data on temporal changes in CA epidemiology are sparse. Objectives The aim of this work was to describe all patients with CA in Denmark, examining changes in patient characteristics from 1998 to 2017. Methods All patients with any form of amyloidosis diagnosed from 1998 to 2017, as well as their comorbidities and pharmacotherapy, were identified in Danish nationwide registries. CA was defined as any diagnosis code for amyloidosis combined with a diagnosis code for heart failure, cardiomyopathy, or atrial fibrillation or a procedural code for pacemaker implantation, regardless of the order. The index date was defined as the date of meeting those criteria. Patients were divided into 5-year periods by index date. For comparison, we also included control subjects (1:4 ratio) from the general population. Results CA criteria were met by 619 patients. Comparing 1998-2002 vs 2013-2017, the median age at baseline increased from 67.4 years (interquartile range [IQR]: 53.9-75.2 years) to 72.3 years (IQR: 66.0-79.3 years). The frequency of male patients increased from 62.1% to 66.2%. The incidence of CA rose from 0.88 to 3.56 per 100,000 person-years in the Danish population aged ≥65 years, and the 2-year mortality decreased from 82.6% (IQR: 69.9%-90.5%) to 50.2% (IQR: 43.1%-56.9%). Compared with control subjects, the mortality among CA patients was significantly higher (log-rank test: P < 0.0001). Conclusions CA, as defined in this study, was increasingly diagnosed on a national scale. The increasing frequency of male patients and median age suggest that wild-type transthyretin amyloidosis is driving this increase. Greater recognition of earlier, less advanced cases might explain decreasing mortality.
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Affiliation(s)
- Oscar Westin
- The Heart Center, University Hospital of Copenhagen, Rigshospitalet, Denmark
| | - Jawad H Butt
- The Heart Center, University Hospital of Copenhagen, Rigshospitalet, Denmark
| | - Finn Gustafsson
- The Heart Center, University Hospital of Copenhagen, Rigshospitalet, Denmark
| | - Morten Schou
- Department of Cardiology, University Hospital of Copenhagen, Herlev and Gentofte Hospital, Denmark
| | - Morten Salomo
- Department of Hematology, University Hospital of Copenhagen, Rigshospitalet, Denmark
| | - Lars Køber
- The Heart Center, University Hospital of Copenhagen, Rigshospitalet, Denmark
| | - Mathew Maurer
- Columbia University Irving Medical Center, New York, New York, USA
| | - Emil L Fosbøl
- The Heart Center, University Hospital of Copenhagen, Rigshospitalet, Denmark
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25
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Lino AMM, Castelli JB, Szor RS, Fernandes F, Aiello VD. Diagnostic challenges in systemic amyloidosis: a case report with clinical and laboratorial pitfalls. AUTOPSY AND CASE REPORTS 2021; 11:e2021326. [PMID: 34631606 PMCID: PMC8489187 DOI: 10.4322/acr.2021.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/22/2021] [Indexed: 12/02/2022] Open
Abstract
Currently, there is growing evidence in the literature warning of misdiagnosis involving amyloidosis and chronic inflammatory demyelinating polyneuropathy (CIDP). Although inducing clinical manifestations outside the peripheral nervous system, light chain and transthyretin amyloidosis may initially present with peripheral neuropathy, which can be indistinguishable from CIDP, leading to a delay in the correct diagnosis. Besides, the precise identification of the amyloid subtype is often challenging. This case report exemplifies clinical and laboratory pitfalls in diagnosing amyloidosis and subtyping amyloid, exposing the patient to potentially harmful procedures.
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Affiliation(s)
- Angelina Maria Martins Lino
- Universidade de São Paulo (USP), Hospital das Clínicas, Department of Neurology, Clinical Peripheral Nerve Group, São Paulo, SP, Brasil
| | - Jussara Bianchi Castelli
- Universidade de São Paulo (USP), Instituto do Coração, Laboratory of Pathology, São Paulo, SP, Brasil.,Grupo Fleury, Department of Pathology, São Paulo, SP, Brasil
| | - Roberta Shcolnik Szor
- Universidade de São Paulo (USP), Instituto do Câncer do Estado de São Paulo, São Paulo, SP, Brasil
| | - Fabio Fernandes
- Universidade de São Paulo (USP), Instituto do Coração, Cardiomiopathy Group, São Paulo, SP, Brasil
| | - Vera Demarchi Aiello
- Universidade de São Paulo (USP), Instituto do Coração, Laboratory of Pathology, São Paulo, SP, Brasil
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26
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Wu Z, Yu C. Diagnostic performance of CMR, SPECT, and PET imaging for the detection of cardiac amyloidosis: a meta-analysis. BMC Cardiovasc Disord 2021; 21:482. [PMID: 34620092 PMCID: PMC8499558 DOI: 10.1186/s12872-021-02292-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 09/17/2021] [Indexed: 12/24/2022] Open
Abstract
Background Noninvasive myocardial imaging modalities, such as cardiac magnetic resonance (CMR), single photon emission computed tomography (SPECT), and Positron emission tomography (PET), are well-established and extensively used to detect cardiac amyloid (CA). The purpose of this study is to directly compare CMR, SPECT, and PET scans in the diagnosis of CA, and to provide evidence for further scientific research and clinical decision-making. Methods PubMed, Embase, and Cochrane Library were searched. Studies used CMR, SPECT and/or PET for the diagnosis of CA were included. Pooled sensitivity, specificity, positive and negative likelihood ratio (LR), diagnostic odds ratio (DOR), their respective 95% confidence intervals (CIs) and the area under the summary receiver operating characteristic (SROC) curve (AUC) were calculated. Quality assessment of included studies was conducted. Results A total of 31 articles were identified for inclusion in this meta-analysis. The pooled sensitivities of CMR, SPECT and PET were 0.84, 0.98 and 0.78, respectively. Their respective overall specificities were 0.87, 0.92 and 0.95. Subgroup analysis demonstrated that 99mTc-HMDP manifested the highest sensitivity (0.99). 99mTc-PYP had the highest specificity (0.95). The AUC values of 99mTc-DPD, 99mTc-PYP, 99mTc-HMDP were 0.89, 0.99, and 0.99, respectively. PET scan with 11C-PIB demonstrated a pooled sensitivity of 0.91 and specificity of 0.97 with an AUC value of 0.98. Conclusion Our meta-analysis reveals that SEPCT scans present better diagnostic performance for the identification of CA as compared with other two modalities. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-021-02292-z.
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Affiliation(s)
- Zhaoye Wu
- Department of Nuclear Medicine, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Chunjing Yu
- Department of Nuclear Medicine, Affiliated Hospital of Jiangnan University, Wuxi, China.
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27
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Ben-Haim S, Chicheportiche A, Goshen E, Arad M, Smekhov M, Menezes LJ, Elliott PM, O'Mahoney E, Stern E, Yuzefovich B, Bomanji JB. Quantitative SPECT/CT parameters of myocardial 99mTechnetium-3,3-diphosphono-1,2-propanodicarboxylic acid (DPD) uptake in suspected cardiac transthyretin amyloidosis. EJNMMI Res 2021; 11:86. [PMID: 34487268 PMCID: PMC8421473 DOI: 10.1186/s13550-021-00828-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 08/23/2021] [Indexed: 01/15/2023] Open
Abstract
Background 99mTc-labelled bisphosphonates are used for imaging assessment of patients with transthyretin cardiac amyloidosis (ATTR). Present study evaluates whether quantitative SPECT/CT measurement of absolute myocardial 99mTc-labelled 3,3-diphosphono-1,2-propanodicarboxylic acid (Tc-DPD) uptake can diagnose patients with suspected ATTR. Methods Twenty-eight patients (25 male, age 80.03 ± 6.99 years) with suspected ATTR referred for Tc-DPD imaging had planar and SPECT/CT imaging of the chest. Three operators independently obtained Tc-DPD myocardial SUVmax and SUVmean above threshold (SMaT) (20, 40 and 60% of SUVmax), using a semi-automated threshold segmentation method. Results were compared to visual grading (0–3) of cardiac uptake. Results Twenty-two patients (78%) had cardiac uptake (2 grade 1, 15 grade 2, 5 grade 3). SUVmax and SMaT segmentation thresholds enabled separating grades 2/3 from 0/1 with excellent inter- and intra-reader correlation. Cut-off values 6.0, 2.5, 3 and 4 for SUVmax, SMaT20,40,60, respectively, separated between grades 2/3 and 0 /1 with PPV and NPV of 100%. SMaT20,40,60(cardiac)/SUVmean (liver) and SMaT20,40,60(cardiac)/SUVmean(liver/lung) separated grades 2 and 3. Conclusion Quantitative SPECT/CT parameters of cardiac Tc-DPD uptake are robust, enabling separation of patients with grades 2 and 3 cardiac uptake from grades 0 and 1. Larger patient cohorts will determine the incremental value of SPECT/CT quantification for ATTR management.
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Affiliation(s)
- Simona Ben-Haim
- Hadassah Medical Center, Hebrew University, Jerusalem, Israel. .,NIHR Biomedical Research Centre, UCL Institute of Nuclear Medicine, London, UK.
| | | | - E Goshen
- Wolfson Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Arad
- Chaim Sheba Medical Center, Ramat Gan, Israel
| | - M Smekhov
- Chaim Sheba Medical Center, Ramat Gan, Israel
| | - L J Menezes
- NIHR Biomedical Research Centre, UCL Institute of Nuclear Medicine, London, UK
| | - P M Elliott
- NIHR Biomedical Research Centre, UCL Institute of Nuclear Medicine, London, UK
| | - E O'Mahoney
- NIHR Biomedical Research Centre, UCL Institute of Nuclear Medicine, London, UK
| | - E Stern
- GE Healthcare, Haifa, Israel
| | | | - J B Bomanji
- NIHR Biomedical Research Centre, UCL Institute of Nuclear Medicine, London, UK
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28
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Sugi MD, Kawashima A, Salomao MA, Bhalla S, Venkatesh SK, Pickhardt PJ. Amyloidosis: Multisystem Spectrum of Disease with Pathologic Correlation. Radiographics 2021; 41:1454-1474. [PMID: 34357805 DOI: 10.1148/rg.2021210006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Amyloidosis is a group of conditions defined by extracellular deposition of insoluble proteins that can lead to multiorgan dysfunction and failure. The systemic form of the disease is often associated with a plasma cell dyscrasia but may also occur in the setting of chronic inflammation, long-term dialysis, malignancy, or multiple hereditary conditions. Localized forms of the disease most often involve the skin, tracheobronchial tree, and urinary tract and typically require tissue sampling for diagnosis, as they may mimic many conditions including malignancy at imaging alone. Advancements in MRI and nuclear medicine have provided greater specificity for the diagnosis of amyloidosis involving the central nervous system and heart, potentially obviating the need for biopsy of the affected organ in certain circumstances. Specifically, a combination of characteristic findings at noninvasive cardiac MRI and skeletal scintigraphy in patients without an underlying plasma cell dyscrasia is diagnostic for cardiac transthyretin amyloidosis. Histologically, the presence of amyloid is denoted by staining with Congo red and a characteristic apple green birefringence under polarized light microscopy. The imaging features of amyloid vary across each organ system but share some common patterns, such as soft-tissue infiltration and calcification, that may suggest the diagnosis in the appropriate clinical context. The availability of novel therapeutics that target amyloid protein fibrils such as transthyretin highlights the importance of early diagnosis. Online supplemental material is available for this article. ©RSNA, 2021.
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Affiliation(s)
- Mark D Sugi
- From the Department of Radiology and Biomedical Imaging, University of California, 505 Parnassus Ave, 3rd Floor, M391, Box 0628, San Francisco, CA 94143 (M.D.S.); Departments of Radiology (A.K.) and Laboratory Medicine and Pathology (M.A.S.), Mayo Clinic Arizona, Scottsdale, Ariz; Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (S.B.); Department of Radiology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minn (S.K.V.); and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis (P.J.P.)
| | - Akira Kawashima
- From the Department of Radiology and Biomedical Imaging, University of California, 505 Parnassus Ave, 3rd Floor, M391, Box 0628, San Francisco, CA 94143 (M.D.S.); Departments of Radiology (A.K.) and Laboratory Medicine and Pathology (M.A.S.), Mayo Clinic Arizona, Scottsdale, Ariz; Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (S.B.); Department of Radiology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minn (S.K.V.); and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis (P.J.P.)
| | - Marcela A Salomao
- From the Department of Radiology and Biomedical Imaging, University of California, 505 Parnassus Ave, 3rd Floor, M391, Box 0628, San Francisco, CA 94143 (M.D.S.); Departments of Radiology (A.K.) and Laboratory Medicine and Pathology (M.A.S.), Mayo Clinic Arizona, Scottsdale, Ariz; Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (S.B.); Department of Radiology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minn (S.K.V.); and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis (P.J.P.)
| | - Sanjeev Bhalla
- From the Department of Radiology and Biomedical Imaging, University of California, 505 Parnassus Ave, 3rd Floor, M391, Box 0628, San Francisco, CA 94143 (M.D.S.); Departments of Radiology (A.K.) and Laboratory Medicine and Pathology (M.A.S.), Mayo Clinic Arizona, Scottsdale, Ariz; Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (S.B.); Department of Radiology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minn (S.K.V.); and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis (P.J.P.)
| | - Sudhakar K Venkatesh
- From the Department of Radiology and Biomedical Imaging, University of California, 505 Parnassus Ave, 3rd Floor, M391, Box 0628, San Francisco, CA 94143 (M.D.S.); Departments of Radiology (A.K.) and Laboratory Medicine and Pathology (M.A.S.), Mayo Clinic Arizona, Scottsdale, Ariz; Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (S.B.); Department of Radiology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minn (S.K.V.); and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis (P.J.P.)
| | - Perry J Pickhardt
- From the Department of Radiology and Biomedical Imaging, University of California, 505 Parnassus Ave, 3rd Floor, M391, Box 0628, San Francisco, CA 94143 (M.D.S.); Departments of Radiology (A.K.) and Laboratory Medicine and Pathology (M.A.S.), Mayo Clinic Arizona, Scottsdale, Ariz; Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (S.B.); Department of Radiology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minn (S.K.V.); and Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis (P.J.P.)
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29
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Transthyretin cardiac amyloidosis: a review of the nuclear imaging findings with emphasis on the radiotracers mechanisms. Ann Nucl Med 2021; 35:967-993. [PMID: 34275068 DOI: 10.1007/s12149-021-01650-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 06/27/2021] [Indexed: 10/20/2022]
Abstract
Cardiac amyloidosis is a protein deposition disease characterized by the infiltration of the myocardium and coronary arteries resulting in a progressive thickening of both ventricles, interatrial septum and atrioventricular valves, eventually leading to organ failure. It is a disease hard to diagnose, due to the lack of diagnostic investigations. However, development of new and more accurate examinations is undergoing. Endomyocardial biopsy is the gold standard investigation for this disease, but it has its limitations (invasive and not widely available). Other investigations may be able to detect the presence of cardiac amyloidosis but cannot specify the type involved. To that end, nuclear medicine through bone scanning offers a simple, non-invasive solution to detect, differentiate and diagnose transthyretin cardiac amyloidosis (ATTR) from other types of cardiac amyloidosis. In order to demonstrate the importance of bone scanning we will present a few methods of image processing based on literature and a personalized method, followed by a few important examples of positive cases. The aim of this review was to present the current methods of ATTR detection with emphasis on nuclear medicine bone scanning and its important place in the decision algorithm of the cardiologist for a personalized approach to this pathology.
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30
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Diagnosing Cardiac Amyloidosis: From Heart Failure to Electrical Storm. Case Rep Med 2021; 2021:3293728. [PMID: 34239572 PMCID: PMC8238623 DOI: 10.1155/2021/3293728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/01/2021] [Accepted: 06/13/2021] [Indexed: 11/18/2022] Open
Abstract
Cardiac amyloidosis is a condition when amyloid fibers are deposited in the extracellular space of the heart causing tachyarrhythmias, heart failure, or sudden cardiac death. We present a 71-year-old woman presenting with dyspnea on admission. Echocardiogram revealed diastolic heart failure and left ventricular hypertrophy with strain pattern concerning for an infiltrative process. She was discharged with diuretic therapy and scheduled for a cardiac magnetic resonance imaging. One week after discharge, she was readmitted with progressive shortness of breath and syncope. She was found to be in shock and had multiple episodes of cardiac arrest with both ventricular tachycardia and pulseless electrical activity. She developed electrical storm and eventually passed within 24 hours. Autopsy revealed gross cardiomegaly and left ventricular hypertrophy with Congo red staining revealing amyloid fibrils with apple-green birefringence. This case demonstrates the rapid progression of cardiac amyloidosis from acute-onset diastolic heart failure to uncontrollable ventricular tachycardia, and eventually death. We review the literature regarding multiple diagnostic modalities that facilitate the confirmation of cardiac amyloidosis.
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31
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Nuclear Imaging for the Diagnosis of Cardiac Amyloidosis in 2021. Diagnostics (Basel) 2021; 11:diagnostics11060996. [PMID: 34070853 PMCID: PMC8228334 DOI: 10.3390/diagnostics11060996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 05/24/2021] [Accepted: 05/27/2021] [Indexed: 01/15/2023] Open
Abstract
Cardiac amyloidosis is caused by the deposition of misfolded protein fibrils into the extracellular space of the heart. The diagnosis of cardiac amyloidosis remains challenging because of the heterogeneous manifestations of the disease. There are many different types of amyloidosis with light-chain (AL) amyloidosis and transthyretin (ATTR) amyloidosis being the most common types of cardiac amyloidosis. Endomyocardial biopsy is considered the gold standard for diagnosing cardiac amyloidosis and differentiating amyloid subtypes, but its use is limited because of the invasive nature of the procedure, with risks for complications and the need for specialized training and centers to perform the procedure. Radionuclide cardiac imaging has recently become the most commonly performed test for the diagnosis of ATTR amyloidosis but is of limited value for the diagnosis of AL amyloidosis. Positron emission tomography has been increasingly used for the diagnosis of cardiac amyloidosis and its applications are expected to expand in the future. Imaging protocols are under refinement to achieve better quantification of the disease burden and prediction of prognosis.
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32
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Hussain M, Collier P, Jaber W. Value of SPECT imaging in patients with TTR-amyloid: ratios are not enough. J Nucl Cardiol 2021; 28:747-749. [PMID: 31858425 DOI: 10.1007/s12350-019-01997-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Muzna Hussain
- Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Desk J1-5, Cleveland, OH, 44195, USA
| | - Patrick Collier
- Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Desk J1-5, Cleveland, OH, 44195, USA
| | - Wael Jaber
- Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart and Vascular Institute, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Desk J1-5, Cleveland, OH, 44195, USA.
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33
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Sascău R, Anghel L, Clement A, Bostan M, Radu R, Stătescu C. The Importance of Multimodality Imaging in the Diagnosis and Management of Patients with Infiltrative Cardiomyopathies: An Update. Diagnostics (Basel) 2021; 11:diagnostics11020256. [PMID: 33562254 PMCID: PMC7915769 DOI: 10.3390/diagnostics11020256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/02/2021] [Accepted: 02/04/2021] [Indexed: 12/16/2022] Open
Abstract
Infiltrative cardiomyopathies (ICMs) comprise a broad spectrum of inherited and acquired conditions (mainly amyloidosis, sarcoidosis, and hemochromatosis), where the progressive buildup of abnormal substances within the myocardium results in left ventricular hypertrophy and manifests as restrictive physiology. Noninvasive multimodality imaging has gradually eliminated endomyocardial biopsy from the diagnostic workup of infiltrative cardiac deposition diseases. However, even with modern imaging techniques’ widespread availability, these pathologies persist in being largely under- or misdiagnosed. Considering the advent of novel, revolutionary pharmacotherapies for cardiac amyloidosis, the archetypal example of ICM, a standardized diagnostic approach is warranted. Therefore, this review aims to emphasize the importance of contemporary cardiac imaging in identifying specific ICM and improving outcomes via the prompt initiation of a targeted treatment.
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Affiliation(s)
- Radu Sascău
- Internal Medicine Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700503 Iași, Romania; (R.S.); (R.R.); (C.S.)
- Cardiology Department, Cardiovascular Diseases Institute “Prof. Dr. George I.M.Georgescu”, 700503 Iași, Romania
| | - Larisa Anghel
- Internal Medicine Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700503 Iași, Romania; (R.S.); (R.R.); (C.S.)
- Cardiology Department, Cardiovascular Diseases Institute “Prof. Dr. George I.M.Georgescu”, 700503 Iași, Romania
- Correspondence: (L.A.); (A.C.); (M.B.); Tel.: +40-0232-211834 (L.A.); +40-0232-211834 (A.C.); +40-0232-211834 (M.B.)
| | - Alexandra Clement
- Cardiology Department, Cardiovascular Diseases Institute “Prof. Dr. George I.M.Georgescu”, 700503 Iași, Romania
- Correspondence: (L.A.); (A.C.); (M.B.); Tel.: +40-0232-211834 (L.A.); +40-0232-211834 (A.C.); +40-0232-211834 (M.B.)
| | - Mădălina Bostan
- Internal Medicine Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700503 Iași, Romania; (R.S.); (R.R.); (C.S.)
- Cardiology Department, Cardiovascular Diseases Institute “Prof. Dr. George I.M.Georgescu”, 700503 Iași, Romania
- Correspondence: (L.A.); (A.C.); (M.B.); Tel.: +40-0232-211834 (L.A.); +40-0232-211834 (A.C.); +40-0232-211834 (M.B.)
| | - Rodica Radu
- Internal Medicine Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700503 Iași, Romania; (R.S.); (R.R.); (C.S.)
- Cardiology Department, Cardiovascular Diseases Institute “Prof. Dr. George I.M.Georgescu”, 700503 Iași, Romania
| | - Cristian Stătescu
- Internal Medicine Department, “Grigore T. Popa” University of Medicine and Pharmacy, 700503 Iași, Romania; (R.S.); (R.R.); (C.S.)
- Cardiology Department, Cardiovascular Diseases Institute “Prof. Dr. George I.M.Georgescu”, 700503 Iași, Romania
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George KM, Hernandez NS, Breton J, Cooper B, Dowd RS, Nail J, Yu A, Mastroianni M, Wang A, Godara A, Zhang D, Arkun K, Patel AR, Varga C, Soto O, Kryzanski J, Comenzo R, Riesenburger R. Increased thickness of lumbar spine ligamentum flavum in wild-type transthyretin amyloidosis. J Clin Neurosci 2020; 84:33-37. [PMID: 33485595 DOI: 10.1016/j.jocn.2020.11.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 10/17/2020] [Accepted: 11/23/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Wild-type transthyretin (ATTRwt) amyloid deposits have been found in the ligamentum flavum of patients undergoing surgery for spinal stenosis. The relationship between ATTRwt and ligamentum flavum thickness is unclear. We used pre-operative magnetic resonance imaging (MRI) to analyze ligamentum flavum thickness in lumbar spinal stenosis patients with and without ATTRwt amyloid. METHODS We retrospectively identified 178 patients who underwent lumbar spine surgery. Ligamentum flavum thickness of 253 specimens was measured on T2-weighted axial MRI. Amyloid presence was confirmed through Congo red staining of specimens, and ATTRwt was confirmed using mass-spectrometry and gene sequencing. RESULTS Twenty four of the 178 patients (13.5%) were found to have ATTRwt in the ligamentum flavum. Forty ATTRwt specimens and 213 non-ATTRwt specimens were measured. Mean ligamentum flavum thickness was 4.92 (±1.27) mm in the ATTRwt group and 4.00 (±1.21) mm in the non-ATTRwt group (p < 0.01). The ligamentum flavum was thickest at L4-L5, with a thickness of 5.15 (±1.27) mm and 4.23 (±1.29) mm in the ATTRwt and non-ATTRwt group, respectively (p = 0.007). There was a significant difference in ligamentum flavum thickness between ATTRwt and non-ATTRwt case for both patients younger than 70 years (p = 0.016) and those older than 70 years (p = 0.004). ATTRwt patients had greater ligamentum flavum thickness by 0.83 mm (95% confidence interval (CI): 0.41-1.25 mm, p < 0.001) when controlled for age and lumbar level. CONCLUSION Patients with ATTRwt had thicker ligamentum flavum compared to patients without ATTRwt. Further studies are needed to investigate the pathophysiology of ATTRwt in ligamentum flavum thickening.
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Affiliation(s)
- Keith M George
- Tufts Medical Center, Department of Neurology, United States; Tufts Medical Center, Department of Neurosurgery, United States
| | - Nicholas S Hernandez
- Tufts Medical Center, Department of Neurology, United States; Tufts Medical Center, Department of Neurosurgery, United States
| | - Jeffrey Breton
- Tufts Medical Center, Department of Neurology, United States; Tufts Medical Center, Department of Neurosurgery, United States
| | - Baillee Cooper
- Tufts Medical Center, Department of Neurology, United States; Tufts Medical Center, Department of Neurosurgery, United States
| | - Richard S Dowd
- Tufts Medical Center, Department of Neurosurgery, United States
| | - Jayde Nail
- Tufts Medical Center, Department of Neurosurgery, United States
| | - Anthony Yu
- Tufts Medical Center, Department of Neurology, United States; Tufts Medical Center, Department of Neurosurgery, United States
| | - Michael Mastroianni
- Tufts Medical Center, Department of Neurology, United States; Tufts Medical Center, Department of Neurosurgery, United States
| | - Andy Wang
- Tufts Medical Center, Department of Neurology, United States; Tufts Medical Center, Department of Neurosurgery, United States
| | - Amandeep Godara
- Tufts Medical Center, Department of Hematology and Oncology, United States
| | - Diana Zhang
- Tufts Medical Center, Department of Internal Medicine, United States
| | - Knarik Arkun
- Tufts Medical Center, Department of Neurosurgery, United States; Tufts Medical Center, Department of Pathology, United States
| | - Ayan R Patel
- Tufts Medical Center, CardioVascular Center, United States
| | - Cindy Varga
- Tufts Medical Center, Department of Hematology and Oncology, United States
| | - Oscar Soto
- Tufts University School of Medicine, United States
| | - James Kryzanski
- Tufts Medical Center, Department of Neurosurgery, United States
| | - Raymond Comenzo
- Tufts Medical Center, Department of Hematology and Oncology, United States
| | - Ron Riesenburger
- Tufts Medical Center, Department of Neurosurgery, United States.
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Löfbacka V, Axelsson J, Pilebro B, Suhr OB, Lindqvist P, Sundström T. Cardiac transthyretin amyloidosis 99mTc-DPD SPECT correlates with strain echocardiography and biomarkers. Eur J Nucl Med Mol Imaging 2020; 48:1822-1832. [PMID: 33367948 PMCID: PMC8113207 DOI: 10.1007/s00259-020-05144-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 12/01/2020] [Indexed: 11/29/2022]
Abstract
Purpose Hereditary transthyretin-amyloid amyloidosis (ATTRv) is an underdiagnosed condition commonly manifesting as congestive heart failure. Recently, scintigraphy utilizing DPD as a tracer was shown to identify ATTRv and wild-type ATTR cardiomyopathy. The aim of this study was to determine the value of quantified scintigraphy utilizing 99mTc-3,3-diphosphono-1,2-propanodicarboxylic acid (DPD) single-photon emission computed tomography (SPECT)/CT, and to correlate its uptake with well-established cardiac functional parameters. Methods Forty-eight patients with genetically verified ATTRv type-A fibril composition, positive 99mTc-DPD SPECT/CT, were retrospectively analyzed. Manual mapping of volumes of interest (VOIs) on DPD SPECT/CT examinations was used to quantify heart uptake. DPD mean and maximum uptake together with a calculated DPD-based amyloid burden (DPDload) was correlated with echocardiographic strain values and cardiac biomarkers. Results Statistically significant correlations were seen in VOIs between DPD uptakes and the corresponding echocardiographic strain values. Furthermore, DPDload had a strong correlation with echocardiographic strain parameters and also correlated with biomarkers troponin T and logarithmic NT-ProBNP. Conclusions In patients with ATTRv cardiomyopathy, DPD SPECT/CT measures the amyloid distribution and provides information on cardiac amyloid load. DPD amyloid load correlates with functional cardiac parameters.
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Affiliation(s)
- Viktor Löfbacka
- Heart Centre, Clinical Physiology, Department of Surgical and Perioperative Sciences, Umeå University, Umeå, Sweden
| | - Jan Axelsson
- Radiation Physics, Department of Radiation Sciences, Umeå University, Umeå, Sweden
| | - Björn Pilebro
- Heart Centre, Cardiology, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Ole B Suhr
- Heart Centre, Cardiology, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Per Lindqvist
- Heart Centre, Clinical Physiology, Department of Surgical and Perioperative Sciences, Umeå University, Umeå, Sweden
| | - Torbjörn Sundström
- Diagnostic Radiology, Department of Radiation Sciences, Umeå University, Umeå, Sweden.
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Oladiran O, Oladunjoye A, Oladunjoye OO, Paudel A, Oke I, Motz L, Luber S, Licata A. Sustained Ventricular Tachycardia as a Harbinger of Cardiac Amyloidosis. AMERICAN JOURNAL OF CASE REPORTS 2020; 21:e927041. [PMID: 33281182 PMCID: PMC7733151 DOI: 10.12659/ajcr.927041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Patient: Male, 71-year-old Final Diagnosis: Cardiac amyloidosis Symptoms: Diaphoresis • presyncope • shortness of breath Medication: — Clinical Procedure: Electrical cardioversion Specialty: Cardiology
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Affiliation(s)
- Oreoluwa Oladiran
- Cardiovascular Division, Department of Medicine, Tower Health Medical Group, Reading Hospital, West Reading, PA, USA
| | - Adeolu Oladunjoye
- Division of Medical Critical Care, Boston Children's Hospital, Boston, MA, USA
| | - Olubunmi O Oladunjoye
- Department of Medicine, Reading Hospital, Tower Health System, West Reading, PA, USA
| | - Anish Paudel
- Department of Medicine, Reading Hospital, Tower Health System, West Reading, PA, USA
| | - Ibiyemi Oke
- Department of Medicine, Reading Hospital, Tower Health System, West Reading, PA, USA
| | - Lisa Motz
- Department of Medicine, Reading Hospital, Tower Health System, West Reading, PA, USA
| | - Sarah Luber
- Department of Medicine, Reading Hospital, Tower Health System, West Reading, PA, USA
| | - Anthony Licata
- Cardiovascular Division, Department of Medicine, Tower Health Medical Group, Reading Hospital, West Reading, PA, USA
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Vergaro G, Aimo A, Barison A, Genovesi D, Buda G, Passino C, Emdin M. Keys to early diagnosis of cardiac amyloidosis: red flags from clinical, laboratory and imaging findings. Eur J Prev Cardiol 2020; 27:1806-1815. [DOI: 10.1177/2047487319877708] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Abstract
Cardiac involvement in systemic amyloidosis, due either to immunoglobulin light-chain or transthyretin amyloidosis, influences clinical presentation and is a strong predictor of unfavourable outcome. Until recently considered as a rare, incurable disease, cardiac amyloidosis, is still mis/underdiagnosed, although treatments effective in improving patient survival are now available for both subtypes, including chemotherapy regimens for immunoglobulin light-chain amyloidosis and tetramer stabiliser for transthyretin amyloidosis. Achieving a timely diagnosis allows initiating life-saving therapies and requires the early recognition of clinical, laboratory and imaging signs of cardiac involvement, some of them may be apparent well before the disease becomes clinically manifest. Given the systemic nature of amyloidosis, a close interaction among experts in multiple specialties is also required, including cardiologists, nephrologists, haematologists, neurologists, radiologists, nuclear medicine specialists and internists. As an increased awareness about disease presentation is required to ameliorate diagnostic performance, we aim to provide the clinician with a guide to the screening and early diagnosis of cardiac amyloidosis, and to review the clinical, biohumoral and instrumental ‘red flags’ that should raise the suspicion of cardiac amyloidosis.
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Affiliation(s)
- Giuseppe Vergaro
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Alberto Aimo
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Italy
| | - Andrea Barison
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | | | - Gabriele Buda
- Department of Clinical and Experimental Medicine, University of Pisa, Italy
| | - Claudio Passino
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - Michele Emdin
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Italy
- Fondazione Toscana Gabriele Monasterio, Pisa, Italy
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Jonker DL, Hazenberg BPC, Nienhuis HLA, Slart RHJA, Glaudemans AWJM, Noordzij W. Imaging cardiac innervation in hereditary transthyretin (ATTRm) amyloidosis: A marker for neuropathy or cardiomyopathy in case of heart failure? J Nucl Cardiol 2020; 27:1774-1784. [PMID: 30374850 PMCID: PMC7599160 DOI: 10.1007/s12350-018-01477-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 10/01/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Nuclear imaging modalities using 123Iodine-metaiodobenzylguanidine (123I-MIBG) and bone seeking tracers identify early cardiac involvement in ATTRm amyloidosis patients. However, little is known whether results from 123I-MIBG scintigraphy actually correlate to markers for either cardiac autonomic neuropathy or cardiomyopathy. METHODS All TTR mutation carriers and ATTRm patients who underwent both 123I-MIBG and 99mTechnetium-hydroxymethylene diphosphonate (99mTc-HDP) scintigraphy were included. Cardiomyopathy was defined as NT-proBNP > 365 ng/L, and cardiac autonomic neuropathy as abnormal cardiovascular reflexes at autonomic function tests. Late 123I-MIBG heart-to-mediastinum ratio (HMR) < 2.0 or wash-out > 20%, and any cardiac 99mTc-HDP uptake were considered as abnormal. RESULTS 39 patients (13 carriers and 26 ATTRm patients) were included in this study. Patients with cardiomyopathy, with or without cardiac autonomic neuropathy, had lower late HMR than similar patients without cardiomyopathy [median 1.1 (range 1.0-1.5) and 1.5(1.2-2.6) vs 2.4 (1.4-3.8) and 2.5 (1.5-3.7), respectively, P < 0.001]. Late HMR and wash-out (inversely) correlated with NT-proBNP r = - 0.652 (P < 0.001) and r = 0.756 (P < 0.001), respectively. Furthermore, late HMR and wash-out (inversely) correlated with cardiac 99mTc-HDP uptake r = - 0.663 (P < 0.001) and r = 0.617 (P < 0.001), respectively. CONCLUSION In case of heart failure, 123I-MIBG scintigraphy reflects cardiomyopathy rather than cardiac autonomic neuropathy in ATTRm patients and TTR mutation carriers. 123I-MIBG scintigraphy may already be abnormal before any cardiac bone tracer uptake is visible.
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Affiliation(s)
- Daphne L. Jonker
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Bouke P. C. Hazenberg
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Hans L. A. Nienhuis
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Riemer H. J. A. Slart
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Biomedical Photonic Imaging, University of Twente, Enschede, The Netherlands
| | - Andor W. J. M. Glaudemans
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Walter Noordzij
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Kaur D, Tiwana H, Stino A, Sandroni P. Autonomic neuropathies. Muscle Nerve 2020; 63:10-21. [PMID: 32926436 DOI: 10.1002/mus.27048] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 08/07/2020] [Accepted: 08/11/2020] [Indexed: 12/17/2022]
Abstract
Autonomic neuropathies represent a complex group of disorders that preferentially target autonomic fibers and can be classified as either acute/subacute or chronic in onset. Acute-onset autonomic neuropathies manifest with such conditions as paraneoplastic syndromes, Guillain-Barre syndrome, Sjögren syndrome, infection, or toxins/chemotherapy. When the presentation is acute, immune-mediated, and without a secondary cause, autoimmune autonomic ganglionopathy is likely, and should be considered for immunotherapy. Of the chronic-onset forms, diabetes is the most widespread and disabling, with autonomic impairment portending increased mortality and cardiac wall remodeling risk. Acquired light chain (AL) and transthyretin (TTR) amyloidosis represent two other key etiologies, with TTR amyloidosis now amenable to newly-approved gene-modifying therapies. The COMPASS-31 questionnaire is a validated outcome measure that can be used to monitor autonomic severity and track treatment response. Symptomatic treatments targeting orthostatic hypotension, among other symptoms, should be individualized and complement disease-modifying therapy, when possible.
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Affiliation(s)
- Divpreet Kaur
- Department of Neurology, Penn State College of Medicine, Hershey, Pennsylvania, USA
| | - Harmanpreet Tiwana
- Department of Neurology, Dartmouth-Hitchcok Medical Center, Lebanon, New Hampshire, USA
| | - Amro Stino
- Department of Neurology, Division of Neuromuscular Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan, USA
| | - Paola Sandroni
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
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Merlo M, Masè M, Cannatà A, Zaffalon D, Lardieri G, Limongelli G, Imazio M, Canepa M, Castelletti S, Bauce B, Biagini E, Livi U, Severini GM, Dal Ferro M, Marra MP, Basso C, Autore C, Sinagra G. Management of nonischemic-dilated cardiomyopathies in clinical practice: a position paper of the working group on myocardial and pericardial diseases of Italian Society of Cardiology. J Cardiovasc Med (Hagerstown) 2020; 21:927-943. [PMID: 32740436 DOI: 10.2459/jcm.0000000000001050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
: Nonischemic-dilated cardiomyopathy (NIDCM) is an entity that gathers extremely heterogeneous diseases. This awareness, although leading to continuous improvement in survival, has increased the complexity of NIDCM patients' management. Even though the endorsed 'red-flags' approach helps clinicians in pursuing an accurate etiological definition in clinical practice, it is not clear when and how peripheral centers should interact with referral centers with specific expertise in challenging scenarios (e.g. postmyocarditis and genetically determined dilated cardiomyopathy) and with easier access to second-line diagnostic tools and therapies. This position paper will summarize each step in NIDCM management, highlighting the multiple interactions between peripheral and referral centers, from first-line diagnostic workup and therapy to advanced heart failure management and long-term follow-up.
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Affiliation(s)
- Marco Merlo
- Cardiothoracovascular Department , Center for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Trieste
| | - Marco Masè
- Cardiothoracovascular Department , Center for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Trieste
| | - Antonio Cannatà
- Cardiothoracovascular Department , Center for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Trieste
| | - Denise Zaffalon
- Cardiothoracovascular Department , Center for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Trieste
| | - Gerardina Lardieri
- Cardiology Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), Hospital of Gorizia and Monfalcone
| | - Giuseppe Limongelli
- Department of Translational Medical Sciences, Inherited and Rare Heart Disease, Vanvitelli Cardiology, University of Campania Luigi Vanvitelli, Caserta
| | - Massimo Imazio
- University Cardiology, A.O.U. Città della Salute e della Scienza di Torino, Torino
| | - Marco Canepa
- Cardiovascular Disease Unit, IRCCS Ospedale Policlinico San Martino - IRCCS Italian Cardiovascular Network.,Department of Internal Medicine, University of Genova, Genova
| | - Silvia Castelletti
- IRCCS Istituto Auxologico Italiano, Center for Cardiac Arrhythmias of Genetic Origin, Milan
| | - Barbara Bauce
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padova
| | - Elena Biagini
- Azienda Ospedaliero - Universitaria, Policlinico di Sant'Orsola, Cardiology Unit, Cardio-Thoracic-Vascular Department, Bologna, Italy
| | - Ugolino Livi
- Cardiothoracic Department, University Hospital of Udine, Udine
| | | | - Matteo Dal Ferro
- Cardiothoracovascular Department , Center for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Trieste
| | - Martina Perazzolo Marra
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padova
| | - Cristina Basso
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padova
| | - Camillo Autore
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, Sapienza University, Rome, Italy
| | - Gianfranco Sinagra
- Cardiothoracovascular Department , Center for Diagnosis and Management of Cardiomyopathies, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Trieste
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George KM, Dowd RS, Nail J, Yu A, Mastroianni M, Wang AY, Arkun K, Patel A, Kryzanski J, Comenzo R, Riesenburger RI. Wild-Type Transthyretin Amyloidosis Occurring in the Ligamentum Flavum of the Cervicothoracic Spine. World Neurosurg 2020; 142:e325-e330. [PMID: 32652280 DOI: 10.1016/j.wneu.2020.06.228] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 01/15/2023]
Abstract
BACKGROUND Wild-type transthyretin amyloid (ATTRwt) has been noted to deposit in the ligamentum flavum of the spine. Prior studies have focused on ATTRwt in the lumbar region, but studies discussing its presence in other levels of the spine are lacking. We report on the presentation of patients with confirmed amyloid in the cervicothoracic regions and discuss the literature to date. METHODS We retrospectively identified patients at a single institution who underwent surgery for spinal stenosis and had pathologic specimens sent for amyloidosis testing with Congo red staining. ATTRwt was confirmed by the presence of transthyretin amyloid by typing and the absence of mutations in the TTR gene sequence. A final study group of patients with ATTRwt and spinal involvement was established (n = 27). RESULTS Of 27 patients with amyloid in the spine, 24 (89%) had amyloid present in the lumbar region, 2 (7%) had amyloid in the cervical region, and 1 (4%) had amyloid in the thoracic region. The median age at which patients in the study underwent surgery was 71 years (interquartile range: 9). Spinal stenosis was the indication for surgery in 26 of 27 (96%) patients. Surgery involved 1 or 2 spinal levels in 24 of 27 (89%) patients. CONCLUSIONS ATTRwt amyloid predominantly deposits in the lumbar region, but it can also be present in the cervical and thoracic regions. While the lumbar regions should remain a focus for evaluation of ATTRwt amyloidosis, the cervicothoracic region should not be ignored.
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Affiliation(s)
- Keith M George
- Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts, USA; Tufts University School of Medicine, Boston, Massachusetts, USA.
| | - Richard S Dowd
- Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts, USA
| | - Jayde Nail
- Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts, USA
| | - Anthony Yu
- Tufts University School of Medicine, Boston, Massachusetts, USA
| | | | - Andy Y Wang
- Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Knarik Arkun
- Department of Pathology, Tufts Medical Center, Boston, Massachusetts, USA
| | - Ayan Patel
- CardioVascular Center, Tufts Medical Center, Boston, Massachusetts, USA
| | - James Kryzanski
- Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts, USA
| | - Raymond Comenzo
- Department of Hematology and Oncology, Tufts Medical Center, Boston, Massachusetts, USA
| | - Ron I Riesenburger
- Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts, USA
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Kim YJ, Ha S, Kim YI. Cardiac amyloidosis imaging with amyloid positron emission tomography: A systematic review and meta-analysis. J Nucl Cardiol 2020; 27:123-132. [PMID: 30022405 DOI: 10.1007/s12350-018-1365-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/04/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Recent progress in amyloid positron emission tomography (PET) has enabled the targeted imaging of cardiac amyloidosis with accuracy. We performed a systematic review and meta-analysis on the diagnostic performance of cardiac amyloidosis using amyloid PET. METHODS A systematic search was performed using key words: cardiac amyloidosis, amyloid, and PET. We estimated the pooled sensitivity, specificity, positive and negative likelihood ratio (LR), and diagnostic odds ratio (DOR). Furthermore, the semiquantitative parameters of PET were evaluated to diagnose cardiac amyloidosis and discern its type [systemic light chain amyloidosis (AL) vs transthyretin amyloidosis (ATTR)] using the pooled standardized mean difference (SMD). RESULTS In total, six eligible studies with a total of 98 subjects were included in this meta-analysis. The pooled sensitivity was 0.95, the specificity was 0.98, positive LR was 10.130, negative LR was 0.1, and DOR was 148.83. The semiquantitative parameters of amyloid PET showed significantly higher values for cardiac amyloidosis patients than those for controls (pooled SMD = 1.42; P < .001), and in AL than ATTR (pooled SMD = 0.96; P < .001). CONCLUSION Amyloid PET imaging can be a useful method for diagnosing cardiac amyloidosis. The semiquantitative parameters of amyloid PET can help diagnose cardiac amyloidosis and discern its type.
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Affiliation(s)
- Yong Joong Kim
- Department of Family Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Sejin Ha
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Yong-Il Kim
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
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Promislow SJ, Ruddy TD. The evolving landscape of nuclear imaging in cardiac amyloidosis. J Nucl Cardiol 2020; 27:210-214. [PMID: 29777480 DOI: 10.1007/s12350-018-1295-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 04/30/2018] [Indexed: 10/16/2022]
Affiliation(s)
- Steven J Promislow
- Division of Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Terrence D Ruddy
- Division of Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada.
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45
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Ferreira MJV, Cerqueira MD. Clinical Applications of Nuclear Cardiology. Clin Nucl Med 2020. [DOI: 10.1007/978-3-030-39457-8_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Di Giovanni B, Gustafson D, Delgado DH. Amyloid transthyretin cardiac amyloidosis: diagnosis and management. Expert Rev Cardiovasc Ther 2019; 17:673-681. [DOI: 10.1080/14779072.2019.1662723] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Bennett Di Giovanni
- Division of Cardiology, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
| | - Dakota Gustafson
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
- Division of Advanced Diagnostics, Toronto General Hospital Research Institute, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
| | - Diego Hernan Delgado
- Division of Cardiology, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Canada
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Costache II, Buburuz AM, Crisu D, Statescu AM, Ungureanu C, Aursulesei V. The role of echocardiography and 99mTc-HDP scintigraphy in non-invasive diagnosis of cardiac amyloidosis: A case series and literature review. Medicine (Baltimore) 2019; 98:e17256. [PMID: 31567998 PMCID: PMC6756609 DOI: 10.1097/md.0000000000017256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
RATIONALE Cardiac amyloidosis, considered for the last years to be a rare disease, is one of the determinants of HFpEF. The non-specific clinical presentation and the difficulties related to endomyocardial biopsy have made cardiac amyloidosis an underdiagnosed clinical entity. Improvement of non-invasive diagnostic techniques and the development of new therapies increased clinical awareness for this form of restrictive cardiomyopathy. We here summarize echocardiography and Tc-HDP scintigraphy findings in 6 cases of cardiac amyloidosis and review the literature data of this progressive and fatal cardiomyopathy. PATIENTS CONCERNS The main clinical manifestations were fatigue, low exercise tolerance and edemas. The right heart failure symptoms usually dominated the clinical picture. DIAGNOSES All cases were evaluated by echocardiography; 3 cases were further examined by bone scintigraphy and 4 cases a peripheral biopsy was performed. Electrocardiography showed low-voltage QRS complexes and "pseudo-infarct" pattern in the precordial leads, contrary to the echocardiographic aspect, which revealed thickening of ventricle walls. Biatrial dilation and diastolic disfunction were observed. Impaired systolic function was detected in advanced stages of the disease. Tc-HDP scintigraphy revealed cardiac uptake of radiopharmaceutical and managed to confirm the diagnosis in 1 case of cardiac amyloidosis in which salivary gland biopsy was negative. INTERVENTIONS The treatment was based on managing fluid balance, with the mainstream therapy represented by diuretics. Neurohormonal agents, usually used in heart failure treatment were avoided, due to poor tolerance and worsening of disease course. The management of these 6 cases was challenging due to the refractory manifestation of congestive heart failure. OUTCOMES During follow-up, 4 of the 6 patients from the current study died in the first year after the final diagnosis was established. LESSONS Nuclear imaging of cardiac amyloidosis has a revolutionary development nowadays. Bone scintigraphy presents promising results for identifying patients at early stages of disease and to differentiate between cardiac amyloidosis types. Further studies are necessary for the standardization of imaging protocol and development of non-invasive diagnostic tools, especially in assessing the response to treatment and disease progression, for which little is known.
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Affiliation(s)
- Irina Iuliana Costache
- Department of Cardiology, “St. Spiridon” Emergency Clinical Hospital
- University of Medicine and Pharmacy “Grigore T. Popa”
| | - Ana Maria Buburuz
- Department of Cardiology, “St. Spiridon” Emergency Clinical Hospital
- University of Medicine and Pharmacy “Grigore T. Popa”
| | - Daniela Crisu
- Department of Cardiology, “St. Spiridon” Emergency Clinical Hospital
| | - Ana Maria Statescu
- Department of Nuclear Medicine, “St. Spiridon” Emergency Clinical Hospital
| | - Carmen Ungureanu
- University of Medicine and Pharmacy “Grigore T. Popa”
- Department of Pathology, “St. Spiridon” Emergency Clinical Hospital, Iasi, Romania
| | - Viviana Aursulesei
- Department of Cardiology, “St. Spiridon” Emergency Clinical Hospital
- University of Medicine and Pharmacy “Grigore T. Popa”
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Carvalho FPD, Erthal F, Azevedo CF. The Role of Cardiac MR Imaging in the Assessment of Patients with Cardiac Amyloidosis. Magn Reson Imaging Clin N Am 2019; 27:453-463. [DOI: 10.1016/j.mric.2019.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Clinical Utility of 18F-Florbetaben PET for Detecting Amyloidosis Associated With Multiple Myeloma: A Prospective Case-Control Study. Clin Nucl Med 2019; 44:e503-e509. [PMID: 31283608 DOI: 10.1097/rlu.0000000000002699] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The aims of this study were to evaluate the diagnostic performance of F-florbetaben PET/CT for detecting amyloid deposits in patients with multiple myeloma (MM) and to identify the optimal PET analysis method. METHODS Fourteen patients with MM were prospectively enrolled (6 with amyloidosis, 8 control subjects). Dynamic imaging of the kidneys was performed for 20 minutes, and the retention ratio was obtained. At 90 minutes after injection, PET was performed. All images were assessed qualitatively and quantitatively, and the SUVmax, SUVmean, and SUVratio were obtained. Variables were compared between the amyloidosis group and the control group. Amyloid deposition was confirmed according to international consensus guidelines. RESULTS Tracer uptake was abnormal in all patients with amyloidosis. The visual detection rate was excellent (100%) in the heart, stomach, and tongue but limited in the kidneys (50%) and poor (0%) in the esophagus, liver, and colon. F-florbetaben PET/CT identified 13 unexpected cases of abnormal uptake, confirming further amyloid deposition. Both spherical and manual volumes of interest showed similar diagnostic performance when evaluating amyloidosis in target organs. There was no significant difference in diagnostic performance between the SUVmax, SUVmean, and SUVratio. CONCLUSIONS F-florbetaben PET/CT can accurately detect systemic amyloid deposits in patients with MM. F-florbetaben PET/CT was particularly useful in the heart, stomach, and tongue but of limited value in the esophagus, liver, and colon. F-florbetaben PET/CT can provide clinical information on organ involvement and could replace pathologic examination for diagnosis of amyloidosis in the future.
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Boutagy NE, Feher A, Alkhalil I, Umoh N, Sinusas AJ. Molecular Imaging of the Heart. Compr Physiol 2019; 9:477-533. [PMID: 30873600 DOI: 10.1002/cphy.c180007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Multimodality cardiovascular imaging is routinely used to assess cardiac function, structure, and physiological parameters to facilitate the diagnosis, characterization, and phenotyping of numerous cardiovascular diseases (CVD), as well as allows for risk stratification and guidance in medical therapy decision-making. Although useful, these imaging strategies are unable to assess the underlying cellular and molecular processes that modulate pathophysiological changes. Over the last decade, there have been great advancements in imaging instrumentation and technology that have been paralleled by breakthroughs in probe development and image analysis. These advancements have been merged with discoveries in cellular/molecular cardiovascular biology to burgeon the field of cardiovascular molecular imaging. Cardiovascular molecular imaging aims to noninvasively detect and characterize underlying disease processes to facilitate early diagnosis, improve prognostication, and guide targeted therapy across the continuum of CVD. The most-widely used approaches for preclinical and clinical molecular imaging include radiotracers that allow for high-sensitivity in vivo detection and quantification of molecular processes with single photon emission computed tomography and positron emission tomography. This review will describe multimodality molecular imaging instrumentation along with established and novel molecular imaging targets and probes. We will highlight how molecular imaging has provided valuable insights in determining the underlying fundamental biology of a wide variety of CVDs, including: myocardial infarction, cardiac arrhythmias, and nonischemic and ischemic heart failure with reduced and preserved ejection fraction. In addition, the potential of molecular imaging to assist in the characterization and risk stratification of systemic diseases, such as amyloidosis and sarcoidosis will be discussed. © 2019 American Physiological Society. Compr Physiol 9:477-533, 2019.
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Affiliation(s)
- Nabil E Boutagy
- Department of Medicine, Yale Translational Research Imaging Center, Yale University School of Medicine, Section of Cardiovascular Medicine, New Haven, Connecticut, USA
| | - Attila Feher
- Department of Medicine, Yale Translational Research Imaging Center, Yale University School of Medicine, Section of Cardiovascular Medicine, New Haven, Connecticut, USA
| | - Imran Alkhalil
- Department of Medicine, Yale Translational Research Imaging Center, Yale University School of Medicine, Section of Cardiovascular Medicine, New Haven, Connecticut, USA
| | - Nsini Umoh
- Department of Medicine, Yale Translational Research Imaging Center, Yale University School of Medicine, Section of Cardiovascular Medicine, New Haven, Connecticut, USA
| | - Albert J Sinusas
- Department of Medicine, Yale Translational Research Imaging Center, Yale University School of Medicine, Section of Cardiovascular Medicine, New Haven, Connecticut, USA.,Yale University School of Medicine, Department of Radiology and Biomedical Imaging, New Haven, Connecticut, USA
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