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Nakane S, Matsuo H, Nakatsuji Y. Immunological and therapeutic insights in autoimmune autonomic ganglionopathy: What is the position of apheresis in immunotherapy? Transfus Apher Sci 2024; 63:103967. [PMID: 38959810 DOI: 10.1016/j.transci.2024.103967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Autoimmune autonomic ganglionopathy (AAG) is characterized by various autonomic and extra-autonomic symptoms and is caused by autoantibodies against nicotinic acetylcholine receptors present in the autonomic ganglia (ganglionic acetylcholine receptor, gAChR), requiring immediate and aggressive intervention to prevent the exacerbation of symptoms. However, there is currently no internationally accepted standard of care for the immunotherapy of AAG, including apheresis. Although the rationale for the use of plasma exchange (PLEX) in AAG is strong, whereby pathogenic gAChR antibodies are removed, its overall impact on patient outcomes is not well-established. Based on previous case reports and small case series studies, we provide a comprehensive overview of the challenges and uncertainties surrounding the use of PLEX for the management of AAG and provide current practice recommendations to guide treatment decisions.
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Affiliation(s)
- Shunya Nakane
- Department of Neurology, Faculty of Medicine, University of Toyama, Toyama, Japan.
| | - Hidenori Matsuo
- Department of Neurology, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Yuji Nakatsuji
- Department of Neurology, Faculty of Medicine, University of Toyama, Toyama, Japan
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2
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Mountford R, Adler BL, Andersson D, Bashford-Rogers R, Berwick R, Bevan S, Caro X, Chung TH, Clark JD, Dawes JM, Dong X, Helyes Z, Kingery W, van Middendorp JJ, Neiland H, Maurer M, Scheibenbogen C, Schmack K, Schreiner T, Svensson CI, Tékus V, Goebel A. Antibody-mediated autoimmunity in symptom-based disorders: position statement and proceedings from an international workshop. Pain Rep 2024; 9:e1167. [PMID: 38873615 PMCID: PMC11175924 DOI: 10.1097/pr9.0000000000001167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/03/2024] [Accepted: 04/06/2024] [Indexed: 06/15/2024] Open
Abstract
A 2-day closed workshop was held in Liverpool, United Kingdom, to discuss the results of research concerning symptom-based disorders (SBDs) caused by autoantibodies, share technical knowledge, and consider future plans. Twenty-two speakers and 14 additional participants attended. This workshop set out to consolidate knowledge about the contribution of autoantibodies to SBDs. Persuasive evidence for a causative role of autoantibodies in disease often derives from experimental "passive transfer" approaches, as first established in neurological research. Here, serum immunoglobulin (IgM or IgG) is purified from donated blood and transferred to rodents, either systemically or intrathecally. Rodents are then assessed for the expression of phenotypes resembling the human condition; successful phenotype transfer is considered supportive of or proof for autoimmune pathology. Workshop participants discussed passive transfer models and wider evidence for autoantibody contribution to a range of SBDs. Clinical trials testing autoantibody reduction were presented. Cornerstones of both experimental approaches and clinical trial parameters in this field were distilled and presented in this article. Mounting evidence suggests that immunoglobulin transfer from patient donors often induces the respective SBD phenotype in rodents. Understanding antibody binding epitopes and downstream mechanisms will require substantial research efforts, but treatments to reduce antibody titres can already now be evaluated.
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Affiliation(s)
- Rebecca Mountford
- Pain Research Institute, University of Liverpool, Liverpool, United Kingdom
| | - Brittany L. Adler
- Division of Rheumatology, Johns Hopkins University, Baltimore, MD, USA
| | - David Andersson
- Wolfson SPaRC, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | | | - Richard Berwick
- Pain Research Institute, University of Liverpool, Liverpool, United Kingdom
- Wolfson SPaRC, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Stuart Bevan
- Wolfson SPaRC, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Xavier Caro
- Southern California Fibromyalgia Research & Treatment Centre, Northridge Hospital Medical Center Professional Building, Los Angeles, CA, USA
| | - Tae Hwan Chung
- Department of Physical Medicine and Rehabilitation, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - J. David Clark
- Department of Anesthesia, Stanford University School of Medicine, Redwood City, CA, USA
| | - John M. Dawes
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Xinzhong Dong
- Solomon H. Snyder Department of Neuroscience, John Hopkins University School of Medicine, Baltimore, MD, USA
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medial School, University of Pécs, Pécs, Hungary
- HUNREN-PTE Chronic Pain Research Group, University of Pécs, Pécs, Hungary
- PharmInVivo Ltd., Pécs, Hungary
| | - Wade Kingery
- Palo Alto Veterans Institute for Research, Palo Alto, CA, USA
| | | | - Harvey Neiland
- Pain Research Institute, University of Liverpool, Liverpool, United Kingdom
| | - Margot Maurer
- Wolfson SPaRC, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Carmen Scheibenbogen
- Institute of Medical Immunology, Charité—Universitätsmedizin Berlin, Berlin Institute of Health, Berlin, Germany
| | - Katharina Schmack
- Francis Crick Institute, London, United Kingdom
- Division of Psychiatry, University College London, London, United Kingdom
| | | | - Camilla I. Svensson
- Department of Physiology and Pharmacology, Centre for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Valéria Tékus
- Department of Pharmacology and Pharmacotherapy, Medial School, University of Pécs, Pécs, Hungary
- Department of Laboratory Diagnostics, University of Pécs, Pécs, Hungary
| | - Andreas Goebel
- Pain Research Institute, University of Liverpool, Liverpool, United Kingdom
- Walton Centre NHS Foundation Trust, Liverpool, United Kingdom
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3
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Dubey D. Autoimmune Neuromuscular Disorders Associated With Neural Antibodies. Continuum (Minneap Minn) 2024; 30:1136-1159. [PMID: 39088291 DOI: 10.1212/con.0000000000001461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2024]
Abstract
OBJECTIVE This article reviews autoimmune neuromuscular disorders and includes an overview of the diagnostic approach, especially the role of antibody testing in a variety of neuropathies and some other neuromuscular disorders. LATEST DEVELOPMENTS In the past few decades, multiple antibody biomarkers associated with immune-mediated neuromuscular disorders have been reported. These biomarkers are not only useful for better understanding of disease pathogenesis and allowing more timely diagnosis but may also aid in the selection of an optimal treatment strategy. ESSENTIAL POINTS Recognition of autoimmune neuromuscular conditions encountered in inpatient or outpatient neurologic practice is very important because many of these disorders are reversible with prompt diagnosis and early treatment. Antibodies are often helpful in making this diagnosis. However, the clinical phenotype and electrodiagnostic testing should be taken into account when ordering antibody tests or panels and interpreting the subsequent results. Similar to other laboratory investigations, understanding the potential utility and limitations of antibody testing in each clinical setting is critical for practicing neurologists.
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Nakane S, Koike H, Hayashi T, Nakatsuji Y. Autoimmune Autonomic Neuropathy: From Pathogenesis to Diagnosis. Int J Mol Sci 2024; 25:2296. [PMID: 38396973 PMCID: PMC10889307 DOI: 10.3390/ijms25042296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Autoimmune autonomic ganglionopathy (AAG) is a disease of autonomic failure caused by ganglionic acetylcholine receptor (gAChR) autoantibodies. Although the detection of autoantibodies is important for distinguishing the disease from other neuropathies that present with autonomic dysfunction, other factors are important for accurate diagnosis. Here, we provide a comprehensive review of the clinical features of AAG, highlighting differences in clinical course, clinical presentation, and laboratory findings from other neuropathies presenting with autonomic symptoms. The first step in diagnosing AAG is careful history taking, which should reveal whether the mode of onset is acute or chronic, followed by an examination of the time course of disease progression, including the presentation of autonomic and extra-autonomic symptoms. AAG is a neuropathy that should be differentiated from other neuropathies when the patient presents with autonomic dysfunction. Immune-mediated neuropathies, such as acute autonomic sensory neuropathy, are sometimes difficult to differentiate, and therefore, differences in clinical and laboratory findings should be well understood. Other non-neuropathic conditions, such as postural orthostatic tachycardia syndrome, chronic fatigue syndrome, and long COVID, also present with symptoms similar to those of AAG. Although often challenging, efforts should be made to differentiate among the disease candidates.
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Affiliation(s)
- Shunya Nakane
- Department of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Haruki Koike
- Division of Neurology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga 849-8501, Japan
| | - Tomohiro Hayashi
- Department of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Yuji Nakatsuji
- Department of Neurology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
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Villagrán-García M, Farina A, Campetella L, Arzalluz-Luque J, Honnorat J. Autonomic nervous system involvement in autoimmune encephalitis and paraneoplastic neurological syndromes. Rev Neurol (Paris) 2024; 180:107-116. [PMID: 38142198 DOI: 10.1016/j.neurol.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/25/2023]
Abstract
In autoimmune neurological diseases, the autonomic nervous system can be the primary target of autoimmunity (e.g. autoimmune autonomic ganglionopathy), or, more frequently, be damaged together with other areas of the nervous system (e.g. Guillain-Barré syndrome). Patients with autoimmune encephalitis and paraneoplastic neurological syndromes (PNS) often develop dysautonomia; however, the frequency and spectrum of autonomic signs and symptoms remain ill defined except for those scenarios in which dysautonomia is a core feature of the disease. Such is the case of Lambert-Eaton myasthenic syndrome, Morvan syndrome or anti-NMDAR encephalitis; in the latter, patients with dysautonomia have been reported to carry a more severe disease and to retain higher disability than those without autonomic dysfunction. Likewise, the presence of autonomic involvement indicates a higher risk of death due to neurological cause in patients with anti-Hu PNS. However, in anti-Hu and other PNS, as well as in the context of immune checkpoint inhibitors' toxicities, the characterization of autonomic involvement is frequently overshadowed by the severity of other neurological symptoms and signs. When evaluated with tests specific for autonomic function, patients with autoimmune encephalitis or PNS usually show a more widespread autonomic involvement than clinically suggested, which may reflect a potential gap of care when it comes to diagnosing dysautonomia. This review aims to revise the autonomic involvement in patients with autoimmune encephalitis and PNS, using for that purpose an antibody-based approach. We also discuss and provide general recommendations for the evaluation and management of dysautonomia in these patients.
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Affiliation(s)
- M Villagrán-García
- French Reference Centre on Paraneoplastic Neurological Syndromes and Autoimmune Encephalitis, Hospices Civils de Lyon, hôpital neurologique, Bron, France; Inserm U1314, MeLiS-UCBL-CNRS UMR 5284, University Claude-Bernard Lyon 1, Lyon, France
| | - A Farina
- French Reference Centre on Paraneoplastic Neurological Syndromes and Autoimmune Encephalitis, Hospices Civils de Lyon, hôpital neurologique, Bron, France; Inserm U1314, MeLiS-UCBL-CNRS UMR 5284, University Claude-Bernard Lyon 1, Lyon, France; Department of Neuroscience, Psychology, Pharmacology and Child Health, University of Florence, Florence, Italy
| | - L Campetella
- French Reference Centre on Paraneoplastic Neurological Syndromes and Autoimmune Encephalitis, Hospices Civils de Lyon, hôpital neurologique, Bron, France; Inserm U1314, MeLiS-UCBL-CNRS UMR 5284, University Claude-Bernard Lyon 1, Lyon, France
| | - J Arzalluz-Luque
- French Reference Centre on Paraneoplastic Neurological Syndromes and Autoimmune Encephalitis, Hospices Civils de Lyon, hôpital neurologique, Bron, France; Department of Neurology, Hospital Universitario Virgen Macarena, Sevilla, Spain
| | - J Honnorat
- French Reference Centre on Paraneoplastic Neurological Syndromes and Autoimmune Encephalitis, Hospices Civils de Lyon, hôpital neurologique, Bron, France; Inserm U1314, MeLiS-UCBL-CNRS UMR 5284, University Claude-Bernard Lyon 1, Lyon, France.
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6
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Kadish R, Clardy SL. Epidemiology of paraneoplastic neurologic syndromes. HANDBOOK OF CLINICAL NEUROLOGY 2024; 200:57-77. [PMID: 38494297 DOI: 10.1016/b978-0-12-823912-4.00011-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Paraneoplastic neurologic syndromes (PNS), initially depicted as seemingly cryptic remote manifestations of malignancy, were first described clinically in the early 20th century, with pathophysiologic correlates becoming better elucidated in the latter half of the century. There remain many questions not only about the pathophysiology but also regarding the epidemiology of these conditions. The continuous discovery of novel autoantigens and related neurologic disease has broadened the association in classical PNS to include conditions such as paraneoplastic cerebellar degeneration. It has also brought into focus several other neurologic syndromes with a putative neoplastic association. These conditions are overall rare, making it difficult to capture large numbers of patients to study, and raising the question of whether incidence is increasing over time or improved identification is driving the increased numbers of cases. With the rise and increasing use of immunotherapy for cancer treatment, the incidence of these conditions is additionally expected to rise and may present with various clinical symptoms. As we enter an era of clinical trial intervention in these conditions, much work is needed to capture more granular data on population groups defined by socioeconomic characteristics such as age, ethnicity, economic resources, and gender to optimize care and clinical trial planning.
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Affiliation(s)
- Robert Kadish
- Department of Neurology, University of Utah, Salt Lake City, UT, United States
| | - Stacey L Clardy
- Department of Neurology, University of Utah, Salt Lake City, UT, United States; George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, UT, United States.
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Golden EP, Vernino S. Paraneoplastic autonomic neuropathies and GI dysmotility. HANDBOOK OF CLINICAL NEUROLOGY 2024; 200:275-282. [PMID: 38494282 DOI: 10.1016/b978-0-12-823912-4.00005-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
A number of the well-recognized autoimmune and paraneoplastic neurologic syndromes commonly involve the autonomic nervous system. In some cases, the autonomic nerves or ganglia are primary targets of neurologic autoimmunity, as in immune-mediated autonomic ganglionopathies. In other disorders such as encephalitis, autonomic centers in the brain may be affected. The presence of autonomic dysfunction (especially gastrointestinal dysmotility) is sometimes overlooked even though this may contribute significantly to the symptom burden in these paraneoplastic disorders. Additionally, recognition of autonomic features as part of the clinical syndrome can help point the diagnostic evaluation toward autoimmune and paraneoplastic etiologies. As with other paraneoplastic disorders, the clinical syndrome and the presence and type of neurologic autoantibodies help to secure the diagnosis and direct the most appropriate investigation for malignancy. Optimal management for these conditions typically includes aggressive treatment of the neoplasm, immunomodulatory therapy, and symptomatic treatments for orthostatic hypotension and gastrointestinal dysmotility.
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Affiliation(s)
- Elisabeth P Golden
- Department of Medicine, Neurology Section, UT Health Science Center at Tyler, Tyler, TX, United States
| | - Steven Vernino
- Department of Neurology, UT Southwestern Medical Center, Dallas, TX, United States.
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8
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Iorio R, Lennon VA. Paraneoplastic autoimmune neurologic disorders associated with thymoma. HANDBOOK OF CLINICAL NEUROLOGY 2024; 200:385-396. [PMID: 38494291 DOI: 10.1016/b978-0-12-823912-4.00008-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Thymoma is often associated with paraneoplastic neurologic diseases. Neural autoantibody testing is an important tool aiding diagnosis of thymoma and its autoimmune neurologic complications. Autoantibodies specific for muscle striational antigens and ion channels of the ligand-gated nicotinic acetylcholine receptor superfamily are the most prevalent biomarkers. The autoimmune neurologic disorders associating most commonly with thymoma are myasthenia gravis (MG), peripheral nerve hyperexcitability (neuromyotonia and Morvan syndrome), dysautonomia, and encephalitis. Patients presenting with these neurologic disorders should be screened for thymoma at diagnosis. Although they can cause profound disability, they usually respond to immunotherapy and treatment of the thymoma. Worsening of the neurologic disorder following surgical removal of a thymoma may herald tumor recurrence. Prompt recognition of paraneoplastic neurologic disorders is critical for patient management. A multidisciplinary approach is required for optimal management of neurologic autoimmunity associated with thymoma.
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Affiliation(s)
- Raffaele Iorio
- Neurology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy.
| | - Vanda A Lennon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States; Department of Neurology, Mayo Clinic, Rochester, MN, United States; Department of Immunology, Mayo Clinic, Rochester, MN, United States
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9
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Yu X, Wax J, Riemekasten G, Petersen F. Functional autoantibodies: Definition, mechanisms, origin and contributions to autoimmune and non-autoimmune disorders. Autoimmun Rev 2023; 22:103386. [PMID: 37352904 DOI: 10.1016/j.autrev.2023.103386] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/06/2023] [Accepted: 06/18/2023] [Indexed: 06/25/2023]
Abstract
A growing body of evidence underscores the relevance of functional autoantibodies in the development of various pathogenic conditions but also in the regulation of homeostasis. However, the definition of functional autoantibodies varies among studies and a comprehensive overview on this emerging topic is missing. Here, we do not only explain functional autoantibodies but also summarize the mechanisms underlying the effect of such autoantibodies including receptor activation or blockade, induction of receptor internalization, neutralization of ligands or other soluble extracellular antigens, and disruption of protein-protein interactions. In addition, in this review article we discuss potential triggers of production of functional autoantibodies, including infections, immune deficiency and tumor development. Finally, we describe the contribution of functional autoantibodies to autoimmune diseases including autoimmune thyroid diseases, myasthenia gravis, autoimmune pulmonary alveolar proteinosis, autoimmune autonomic ganglionopathy, pure red cell aplasia, autoimmune encephalitis, pemphigus, acquired thrombotic thrombocytopenic purpura, idiopathic dilated cardiomyopathy and systemic sclerosis, as well as non-autoimmune disorders such as allograft rejection, infectious diseases and asthma.
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Affiliation(s)
- Xinhua Yu
- Priority Area Chronic Lung Diseases, Research Center Borstel, Members of the German Center for Lung Research (DZL), 23845 Borstel, Germany.
| | - Jacqueline Wax
- Priority Area Chronic Lung Diseases, Research Center Borstel, Members of the German Center for Lung Research (DZL), 23845 Borstel, Germany
| | - Gabriela Riemekasten
- Department of Rheumatology and Clinical Immunology, University Clinic of Schleswig Holstein, University of Lübeck, 23538 Lübeck, Germany
| | - Frank Petersen
- Priority Area Chronic Lung Diseases, Research Center Borstel, Members of the German Center for Lung Research (DZL), 23845 Borstel, Germany
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Pechlivanidou M, Ninou E, Karagiorgou K, Tsantila A, Mantegazza R, Francesca A, Furlan R, Dudeck L, Steiner J, Tzartos J, Tzartos S. Autoimmunity to Neuronal Nicotinic Acetylcholine Receptors. Pharmacol Res 2023; 192:106790. [PMID: 37164280 DOI: 10.1016/j.phrs.2023.106790] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/30/2023] [Accepted: 05/05/2023] [Indexed: 05/12/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) are widely expressed in many and diverse cell types, participating in various functions of cells, tissues and systems. In this review, we focus on the autoimmunity against neuronal nAChRs, the specific autoantibodies and their mechanisms of pathological action in selected autoimmune diseases. We summarize the current relevant knowledge from human diseases as well as from experimental models of autoimmune neurological disorders related to antibodies against neuronal nAChR subunits. Despite the well-studied high immunogenicity of the muscle nAChRs where autoantibodies are the main pathogen of myasthenia gravis, autoimmunity to neuronal nAChRs seems infrequent, except for the autoantibodies to the ganglionic receptor, the α3 subunit containing nAChR (α3-nAChR), which are detected and are likely pathogenic in Autoimmune Autonomic Ganglionopathy (AAG). We describe the detection, presence and function of these antibodies and especially the recent development of a cell-based assay (CBA) which, contrary to until recently available assays, is highly specific for AAG. Rare reports of autoantibodies to the other neuronal nAChR subtypes include a few cases of antibodies to α7 and/or α4β2 nAChRs in Rasmussen encephalitis, schizophrenia, autoimmune meningoencephalomyelitis, and in some myasthenia gravis patients with concurrent CNS symptoms. Neuronal-type nAChRs are also present in several non-excitable tissues, however the presence and possible role of antibodies against them needs further verification. It is likely that the future development of more sensitive and disease-specific assays would reveal that neuronal nAChR autoantibodies are much more frequent and may explain the mechanisms of some seronegative autoimmune diseases.
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Affiliation(s)
| | | | - Katerina Karagiorgou
- Tzartos NeuroDiagnostics, Athens, Greece; Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | | | - Renato Mantegazza
- Neuroimmunology and Neuromuscular Diseases Unit, Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy
| | - Andreetta Francesca
- Neuroimmunology and Neuromuscular Diseases Unit, Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy
| | - Raffaello Furlan
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Rozzano, Milan, Italy; Clinical and Research Center - IRCCS, Humanitas University, Rozzano, Milan, Italy
| | - Leon Dudeck
- Department of Psychiatry and Psychotherapy, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany; Laboratory of Translational Psychiatry, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Johann Steiner
- Department of Psychiatry and Psychotherapy, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany; Laboratory of Translational Psychiatry, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany; Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany; Center for Health and Medical Prevention (CHaMP), Magdeburg, Germany; German Center for Mental Health DZPG, Center for Intervention and Research on Adaptive and Maladaptive Brain Circuits Underlying Mental Health C-I-R-C, Halle-Jena-Magdeburg, Germany
| | - John Tzartos
- 2(nd) Department of Neurology, School of Medicine, National and Kapodistrian University of Athens, "Attikon" University Hospital, Athens, Greece.
| | - Socrates Tzartos
- Tzartos NeuroDiagnostics, Athens, Greece; Department of Neurobiology, Hellenic Pasteur Institute, Athens, Greece; Department of Pharmacy, University of Patras, Patras, Greece.
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Yamakawa M, Nakane S, Ihara E, Tawara N, Ikeda H, Igarashi Y, Komohara Y, Takamatsu K, Ikeda T, Tomita Y, Murai S, Ando Y, Mukaino A, Ogawa Y, Ueda M. A novel murine model of autoimmune dysautonomia by α3 nicotinic acetylcholine receptor immunization. Front Neurosci 2022; 16:1006923. [PMID: 36507326 PMCID: PMC9727251 DOI: 10.3389/fnins.2022.1006923] [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] [Received: 07/29/2022] [Accepted: 10/25/2022] [Indexed: 11/24/2022] Open
Abstract
We aimed to establish a novel murine model of autoimmune autonomic ganglionopathy (AAG), which represents autoimmune dysautonomia, associated with MHC class II to understand its pathomechanism and the pathogenicity of nicotinic acetylcholine receptor (nAChR) antibodies. The amino acid sequence of the mouse nAChRα3 protein was analyzed using an epitope prediction tool to predict the possible MHC class II binding mouse nAChRα3 peptides. We focused on two nAChRα3 peptides in the extracellular region, and experimental AAG (EAAG) was induced by immunization of C57BL/6 mice with these two different peptides. EAAG mice were examined both physiologically and histologically. Mice with EAAG generated nAChRα3 antibodies and exhibited autonomic dysfunction, including reduced heart rate, excessive fluctuations in systolic blood pressure, and intestinal transit slowing. Additionally, we observed skin lesions, such as alopecia and skin ulcers, in immunized mice. Neuronal cell density in the sympathetic cervical ganglia in immunized mice was significantly lower than that in control mice at the light microscopic level. We interpreted that active immunization of mice with nAChRα3 peptides causes autonomic dysfunction similar to human AAG induced by an antibody-mediated mechanism. We suggested a mechanism by which different HLA class II molecules might preferentially affect the nAChR-specific immune response, thus controlling diversification of the autoantibody response. Our novel murine model mimics AAG in humans and provides a useful tool to investigate its pathomechanism.
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Affiliation(s)
- Makoto Yamakawa
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shunya Nakane
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan,*Correspondence: Shunya Nakane,
| | - Eikichi Ihara
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Nozomu Tawara
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroko Ikeda
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoko Igarashi
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Komohara
- Department of Cell Pathology, Graduate School of Medical Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Koutaro Takamatsu
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Tokunori Ikeda
- Department of Medical Information Sciences and Administration Planning (Biostatistics), Kumamoto University Hospital, Kumamoto, Japan,Laboratory of Clinical Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan
| | - Yusuke Tomita
- Department of Respiratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shoichi Murai
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Akihiro Mukaino
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Mitsuharu Ueda
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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12
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de Rojas Leal C, Lage-Sánchez JM, Pinel-Ríos J, León Plaza O, Hamad-Cueto O, Dawid de Vera MT, Dawid-Milner MS. Paraneoplastic autoimmune autonomic ganglionopathy as the first symptom of bladder cancer: a case report and review of literature. Neurol Sci 2022; 43:4841-4845. [DOI: 10.1007/s10072-022-06075-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 04/10/2022] [Indexed: 10/18/2022]
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Montalvo M, Nallapaneni P, Hassan S, Nurko S, Pittock SJ, Khlevner J. Autoimmune gastrointestinal dysmotility following SARS-CoV-2 infection successfully treated with intravenous immunoglobulin. Neurogastroenterol Motil 2022; 34:e14314. [PMID: 34984765 PMCID: PMC9257846 DOI: 10.1111/nmo.14314] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 09/24/2021] [Accepted: 12/10/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Autoimmune gastrointestinal dysmotility (AGID) is a limited form of dysautonomia that can be paraneoplastic or idiopathic. Some presentations can be preceded by a viral infection. METHODS We report a case of a 17-year-old girl that developed intractable nausea and early satiety after SARS-CoV-2 infection. KEY RESULTS Over ten months, she required nasogastric and nasoduodenal tube feedings and finally was advanced to total parenteral nutrition to meet her caloric needs. Her α3 nicotinic ganglionic acetylcholine and anti-striational antibodies were mildly elevated. Gastrointestinal transit scintigraphy studies showed delayed gastric emptying and slowed small bowel transit. Thermoregulatory sweat test showed areas of anhidrosis consistent with autonomic sudomotor impairment. After IVIG treatment the patient's symptoms improved dramatically and she was able to tolerate full oral diet. This was reflected by improvement of her baseline transit studies and the thermoregulatory sweat test. CONCLUSIONS AND INFERENCES This is the first report of AGID occurring after SARS-CoV-2 infection. The dramatic response to IVIG emphasizes the importance of early recognition and the reversible and treatable nature of this condition.
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Affiliation(s)
- Mayra Montalvo
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Padmini Nallapaneni
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Sara Hassan
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Mayo Clinic, Rochester, Minnesota, USA
| | - Samuel Nurko
- Center for Motility and Functional Gastrointestinal Disorders Boston Children’s Hospital, Boston, Massachusetts, USA
| | - Sean J. Pittock
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Julie Khlevner
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
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Karagiorgou K, Dandoulaki M, Mantegazza R, Andreetta F, Furlan R, Lindstrom J, Zisimopoulou P, Chroni E, Kokotis P, Anagnostou E, Tzanetakos D, Breza M, Katsarou Z, Amoiridis G, Mastorodemos V, Bregianni M, Bonakis A, Tsivgoulis G, Voumvourakis K, Tzartos S, Tzartos J. Novel Cell-Based Assay for Alpha-3 Nicotinic Receptor Antibodies Detects Antibodies Exclusively in Autoimmune Autonomic Ganglionopathy. NEUROLOGY(R) NEUROIMMUNOLOGY & NEUROINFLAMMATION 2022; 9:9/3/e1162. [PMID: 35351814 PMCID: PMC8969289 DOI: 10.1212/nxi.0000000000001162] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 02/10/2022] [Indexed: 11/30/2022]
Abstract
Background and Objectives Autoantibodies against α3-subunit–containing nicotinic acetylcholine receptors (α3-nAChRs), usually measured by radioimmunoprecipitation assay (RIPA), are detected in patients with autoimmune autonomic ganglionopathy (AAG). However, low α3-nAChR antibody levels are frequently detected in other neurologic diseases with questionable significance. Our objective was to develop a method for the selective detection of the potentially pathogenic α3-nAChR antibodies, seemingly present only in patients with AAG. Methods The study involved sera from 55 patients from Greece, suspected for autonomic failure, and 13 patients from Italy diagnosed with autonomic failure, positive for α3-nAChR antibodies by RIPA. In addition, sera from 52 patients with Ca2+ channel or Hu antibodies and from 2,628 controls with various neuroimmune diseases were included. A sensitive live cell-based assay (CBA) with α3-nAChR–transfected cells was developed to detect antibodies against the cell-exposed α3-nAChR domain. Results Twenty-five patients were found α3-nAChR antibody positive by RIPA. Fifteen of 25 patients were also CBA positive. Of interest, all 15 CBA-positive patients had AAG, whereas all 10 CBA-negative patients had other neurologic diseases. RIPA antibody levels of the CBA-negative sera were low, although our CBA could detect dilutions of AAG sera corresponding to equally low RIPA antibody levels. No serum bound to control-transfected cells, and none of the 2,628 controls was α3-CBA positive. Discussion This study showed that in contrast to the established RIPA for α3-nAChR antibodies, which at low levels is of moderate disease specificity, our CBA seems AAG specific, while at least equally sensitive with the RIPA. This study provides Class II evidence that α3-nAChR CBA is a specific assay for AAG. Classification of Evidence This study provides Class II evidence that an α3-nAChR cell-based assay is a more specific assay for AAG than the standard RIPA.
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Affiliation(s)
- Katerina Karagiorgou
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Maria Dandoulaki
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Renato Mantegazza
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Francesca Andreetta
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Raffaello Furlan
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Jon Lindstrom
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Paraskevi Zisimopoulou
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Elisabeth Chroni
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Panagiotis Kokotis
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Evangelos Anagnostou
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Dimitrios Tzanetakos
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Marianthi Breza
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Zoe Katsarou
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Georgios Amoiridis
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Vasileios Mastorodemos
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Marianna Bregianni
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Anastasios Bonakis
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Georgios Tsivgoulis
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Konstantinos Voumvourakis
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - Socrates Tzartos
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
| | - John Tzartos
- From the Tzartos NeuroDiagnostics (K.K., M.D., S.T., J.T.), Athens; Department of Biochemistry and Biotechnology (K.K.), University of Thessaly, Larissa, Greece; Neuroimmunology and Neuromuscular Diseases Unit (R.M., F.A.), Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta, Milan, Italy; Department of Biomedical Sciences Humanitas University (R.F.), Milan, Italy; Department of Neuroscience (J.L.), Medical School, University of Pennsylvania, Philadelphia, PA; Department of Neurobiology (P.Z., S.T.), Hellenic Pasteur Institute, Athens, Greece; Department of Neurology (E.C.), School of Medicine, University of Patras; 1st Department of Neurology (P.K., E.A., D.T., M. Breza), School of Medicine, Eginition Hospital, National and Kapodistrian University of Athens (NKUA), Athens; Department of Neurology (Z.K.), Hippokration Hospital, Thessaloniki; Neurology Department (G.A., V.M.), University Hospital of Crete, Heraklion, Crete; and 2nd Department of Neurology (M. Bregianni, A.B., G.T., K.V., J.T.), Attikon University Hospital, School of Medicine, NKUA, Athens, Greece
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Latov N. Immune mechanisms, the role of complement, and related therapies in autoimmune neuropathies. Expert Rev Clin Immunol 2021; 17:1269-1281. [PMID: 34751638 DOI: 10.1080/1744666x.2021.2002147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Autoimmune neuropathies have diverse presentations and underlying immune mechanisms. Demonstration of efficacy of therapeutic agents that inhibit the complement cascade would confirm the role of complement activation. AREAS COVERED A review of the pathophysiology of the autoimmune neuropathies, to identify those that are likely to be complement mediated. EXPERT OPINION Complement mediated mechanisms are implicated in the acute and chronic neuropathies associated with IgG or IgM antibodies that target the Myelin Associated Glycoprotein (MAG) or gangliosides in the peripheral nerves. Antibody and complement mechanisms are also suspected in the Guillain-Barré syndrome and chronic inflammatory demyelinating neuropathy, given the therapeutic response to plasmapheresis or intravenous immunoglobulins, even in the absence of an identifiable target antigen. Complement is unlikely to play a role in paraneoplastic sensory neuropathy associated with antibodies to HU/ANNA-1 given its intracellular localization. In chronic demyelinating neuropathy with anti-nodal/paranodal CNTN1, NFS-155, and CASPR1 antibodies, myotonia with anti-VGKC LGI1 or CASPR2 antibodies, or autoimmune autonomic neuropathy with anti-gAChR antibodies, the response to complement inhibitory agents would depend on the extent to which the antibodies exert their effects through complement dependent or independent mechanisms. Complement is also likely to play a role in Sjogren's, vasculitic, and cryoglobulinemic neuropathies.
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Affiliation(s)
- Norman Latov
- Department of Neurology, Weill Cornell Medical College, New York, USA
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16
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Autoimmune autonomic ganglionopathy: Ganglionic acetylcholine receptor autoantibodies. Autoimmun Rev 2021; 21:102988. [PMID: 34728435 DOI: 10.1016/j.autrev.2021.102988] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/28/2021] [Indexed: 11/24/2022]
Abstract
Autoimmune Autonomic Ganglionopathy (AAG) is a rare immune-mediated disease of the autonomic nervous system. The incidence of AAG is unknown and diagnosis is often difficult due to the multicompartmental nature of the autonomic nervous system - sympathetic, parasympathetic and enteric components - with variable severity and number of components affected. Diagnostic confidence is increased when ganglionic acetylcholine receptor (gnACHR) autoantibodies are detected. Three gnACHR autoantibody diagnostic assays have been described (two binding assays, one receptor immunomodulation assay), but cross-validation between assays is limited. The prevalence of gnACHR autoantibodies in AAG is not known, with application of different clinical and laboratory criteria in the few studies of AAG cohorts and large retrospective laboratory studies of positive gnACHR autoantibodies lacking adequate clinical characterisation. Furthermore, the rate of unexpected gnACHR autoantibody positivity in conditions without overt autonomic dysfunction (false positive results) adds to the complexity of their interpretation. We review the pathophysiology of gnACHR autoantibodies and assays for their detection, with immunomodulation and high titer radioimmunoprecipitation results likely offering better AAG disease identification.
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17
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Goto Y, Sunami Y, Sugaya K, Nakane S, Takahashi K. [A case of chronic postural tachycardia syndrome with positive anti-ganglionic acetylcholine receptor (gAChR) antibody]. Rinsho Shinkeigaku 2021; 61:547-551. [PMID: 34275953 DOI: 10.5692/clinicalneurol.cn-001598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Postural orthostatic tachycardia syndrome (POTS) is a form of orthostatic intolerance characterized by symptoms such as lightheadedness, fainting, and brain fog that occur with a rapid elevation in heart rate when standing up from a reclining position. The etiology of POTS has yet to be established. However, a growing body of evidence suggests that POTS may be an autoimmune disorder such as autoimmune autonomic ganglionopathy, an acquired, immune-mediated form of diffuse autonomic failure. Many patients have serum antibodies that bind to the ganglionic acetylcholine receptors (gAChRs) in the autonomic ganglia. Herein, we describe a 39-year-old female patient with an eight-year history of orthostatic intolerance. POTS was diagnosed based on the findings of a head-up tilt test, in which a rapid increase in the patient's heart rate from 58 bpm in the lying position to 117 bpm in the upright position without orthostatic hypotension was observed. The POTS symptoms were refractory to various medications except for pyridostigmine bromide, which resulted in a partial resolution of her symptoms. Her serum was found to be strongly positive for anti-gAChR (β4 subunit) autoantibody (2.162 A.I., normal range: below 1.0). Based on these findings, a limited form of autoimmune POTS was diagnosed. After obtaining written informed consent, she was treated with intravenous immunoglobulin (IVIg) 400 mg/kg/day for five days, which led to clinical improvement by reducing her heart rate increase in the upright position. She was able to return to work with IVIg treatment at regular intervals. Our case provides further evidence of a potential autoimmune pathogenesis for POTS. Aggressive immunotherapy may be effective for POTS even in chronic cases.
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Affiliation(s)
- Yuya Goto
- Department of Neurology, Tokyo Metropolitan Neurological Hospital
| | - Yoko Sunami
- Department of Neurology, Tokyo Metropolitan Neurological Hospital
| | - Keizo Sugaya
- Department of Neurology, Tokyo Metropolitan Neurological Hospital
| | - Shunya Nakane
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital
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18
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Koay S, Vichayanrat E, Bremner F, Panicker JN, Lang B, Lunn MP, Watson L, Ingle GT, Hagen EM, McNamara P, Jacobson L, Provitera V, Nolano M, Vincent A, Mathias CJ, Iodice V. Multimodal Biomarkers Quantify Recovery in Autoimmune Autonomic Ganglionopathy. Ann Neurol 2021; 89:753-768. [PMID: 33438240 DOI: 10.1002/ana.26018] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/06/2021] [Accepted: 01/08/2021] [Indexed: 11/10/2022]
Abstract
OBJECTIVE The objective of this study was to evaluate patients with ganglionic acetylcholine receptor antibody (gAChR-Ab) positive autoimmune autonomic ganglionopathy using a multimodal testing protocol to characterize their full clinical phenotype and explore biomarkers to quantify immunotherapy response. METHODS We conducted a cohort study of 13 individuals (7 women, 21-69 years of age) with autonomic failure and gAChR-Ab >100 pM identified between 2005 and 2019. From 2018, all patients were longitudinally assessed with cardiovascular, pupillary, urinary, sudomotor, lacrimal and salivary testing, and Composite Autonomic Symptom Score (COMPASS-31) autonomic symptom questionnaires. The orthostatic intolerance ratio was calculated by dividing change in systolic blood pressure over time tolerated on head-up tilt. Eleven patients received immunotherapy. RESULTS At first assessment, all 13 patients had cardiovascular and pupillary impairments, 7 of 8 had postganglionic sudomotor dysfunction, 9 of 11 had urinary retention and xeropthalmia, and 6 of 8 had xerostomia. After immunotherapy, there were significant improvements in orthostatic intolerance ratio (33.3 [17.8-61.3] to 5.2 [1.4-8.2], p = 0.007), heart rate response to deep breathing (1.5 [0.0-3.3] to 4.5 [3.0-6.3], p = 0.02), pupillary constriction to light (12.0 [5.5-18.0] to 19.0 [10.6-23.8]%, p = 0.02), saliva production (0.01 [0.01-0.05] to 0.08 [0.02-0.20] g/min, p = 0.03), and COMPASS-31 scores (52 to 17, p = 0.03). Orthostatic intolerance ratio correlated with autonomic symptoms at baseline (r = 0.841, p = 0.01) and following immunotherapy (r = 0.889, p = 0.02). Immunofluorescence analyses of skin samples from a patient 32 years after disease onset showed loss of nerve fibers supplying the dermal autonomic adnexa and epidermis, with clear improvements following immunotherapy. INTERPRETATION Patients with autoimmune autonomic ganglionopathy demonstrated objective evidence of widespread sympathetic and parasympathetic autonomic failure, with significant improvements after immunotherapy. Quantitative autonomic biomarkers should be used to define initial deficits, guide therapeutic decisions, and document treatment response. ANN NEUROL 2021;89:753-768.
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Affiliation(s)
- Shiwen Koay
- Department of Brain, Repair and Rehabilitation, University College London Queen Square Institute of Neurology, London, UK.,Autonomic Unit, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Ekawat Vichayanrat
- Autonomic Unit, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Fion Bremner
- Department of Brain, Repair and Rehabilitation, University College London Queen Square Institute of Neurology, London, UK.,Neuro-Ophthalmology Department, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Jalesh N Panicker
- Department of Brain, Repair and Rehabilitation, University College London Queen Square Institute of Neurology, London, UK.,Department of Uro-Neurology, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Bethan Lang
- Nuffield Department of Clinical Neurosciences, Oxford University, John Radcliffe Hospital, Oxford, UK
| | - Michael P Lunn
- Neuroimmunology Unit, University College London Queen Square Institute of Neurology, London, UK.,MRC Centre for Neuromuscular Diseases, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Laura Watson
- Autonomic Unit, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Gordon T Ingle
- Autonomic Unit, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Ellen Merete Hagen
- Autonomic Unit, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Patricia McNamara
- Autonomic Unit, The National Hospital for Neurology and Neurosurgery, London, UK
| | - Leslie Jacobson
- Nuffield Department of Clinical Neurosciences, Oxford University, John Radcliffe Hospital, Oxford, UK
| | - Vincenzo Provitera
- Neurology Department, Skin Biopsy Laboratory, Istituti Clinici Scientifici Maugeri IRCCS, Telese Terme, Italy.,Department of Neurosciences, Reproductive Sciences and Odontostomatology, University Federico II of Naples, Naples, Italy
| | - Maria Nolano
- Neurology Department, Skin Biopsy Laboratory, Istituti Clinici Scientifici Maugeri IRCCS, Telese Terme, Italy.,Department of Neurosciences, Reproductive Sciences and Odontostomatology, University Federico II of Naples, Naples, Italy
| | - Angela Vincent
- Nuffield Department of Clinical Neurosciences, Oxford University, John Radcliffe Hospital, Oxford, UK.,Neurology Department, Skin Biopsy Laboratory, Istituti Clinici Scientifici Maugeri IRCCS, Telese Terme, Italy
| | - Christopher J Mathias
- Department of Brain, Repair and Rehabilitation, University College London Queen Square Institute of Neurology, London, UK.,Autonomic and Neurovascular Medicine Centre, Hospital of St. John and St. Elizabeth, London, UK
| | - Valeria Iodice
- Department of Brain, Repair and Rehabilitation, University College London Queen Square Institute of Neurology, London, UK.,Autonomic Unit, The National Hospital for Neurology and Neurosurgery, London, UK
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Toxemia in Human Naturally Acquired Botulism. Toxins (Basel) 2020; 12:toxins12110716. [PMID: 33202855 PMCID: PMC7697460 DOI: 10.3390/toxins12110716] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/07/2020] [Accepted: 11/10/2020] [Indexed: 12/18/2022] Open
Abstract
Human botulism is a severe disease characterized by flaccid paralysis and inhibition of certain gland secretions, notably salivary secretions, caused by inhibition of neurotransmitter release. Naturally acquired botulism occurs in three main forms: food-borne botulism by ingestion of preformed botulinum neurotoxin (BoNT) in food, botulism by intestinal colonization (infant botulism and intestinal toxemia botulism in infants above one year and adults), and wound botulism. A rapid laboratory confirmation of botulism is required for the appropriate management of patients. Detection of BoNT in the patient's sera is the most direct way to address the diagnosis of botulism. Based on previous published reports, botulinum toxemia was identified in about 70% of food-borne and wound botulism cases, and only in about 28% of infant botulism cases, in which the diagnosis is mainly confirmed from stool sample investigation. The presence of BoNT in serum depends on the BoNT amount ingested with contaminated food or produced locally in the intestine or wound, and the timeframe between serum sampling and disease onset. BoNT levels in patient's sera are most frequently low, requiring a highly sensitive method of detection. Mouse bioassay is still the most used method of botulism identification from serum samples. However, in vitro methods based on BoNT endopeptidase activity with detection by mass spectrometry or immunoassay have been developed and depending on BoNT type, are more sensitive than the mouse bioassay. These new assays show high specificity for individual BoNT types and allow more accurate differentiation between positive toxin sera from botulism and autoimmune neuropathy patients.
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20
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Comparing Clinical, Imaging, and Physiological Correlates of Intestinal Pseudo-Obstruction: Systemic Sclerosis vs Amyloidosis and Paraneoplastic Syndrome. Clin Transl Gastroenterol 2020; 11:e00206. [PMID: 32931184 PMCID: PMC7410023 DOI: 10.14309/ctg.0000000000000206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Intestinal pseudo-obstruction is characterized by impaired transit and luminal dilation in the absence of mechanical obstruction. Our study aims to describe the clinical, radiographic, and physiological findings in pseudo-obstruction associated with systemic sclerosis (SSc), amyloidosis, and paraneoplastic syndrome. METHODS A retrospective cohort of patients evaluated at our institution between January 1, 2008, and August 1, 2018, was assembled. Clinical, imaging, and physiological characteristics were abstracted from electronic medical records. RESULTS We identified 100 cases of pseudo-obstruction (55 SSc, 27 amyloidosis, and 18 paraneoplastic). Female population predominance was seen in SSc (71%) vs male population in amyloidosis (74%). Most common symptom was abdominal bloating in all 3 groups. Vomiting was more common in SSc than amyloidosis (73% vs 46%, P = 0.02). Diarrhea was more common in amyloidosis and SSc compared with paraneoplastic (81% and 67% vs 28%, P < 0.01). Weight loss (>5%) was more common in SSc compared with amyloidosis and paraneoplastic (78% vs 31% and 17%, P < 0.0001). Only small bowel dilation was seen in 79%, 40%, and 44% and only large bowel dilation in 2%, 44%, and 44% of patients in SSc, amyloidosis, and paraneoplastic, respectively. Five of 8 SSc patients had myopathic and 3 of 5 paraneoplastic had neuropathic involvement on gastroduodenal manometry. DISCUSSION SSc-associated pseudo-obstruction demonstrates female population predominance and presents with vomiting, diarrhea, and weight loss. Amyloidosis-associated pseudo-obstruction shows male population predominance. Small bowel is more commonly involved than large bowel on both imaging and transit studies in SSc. Myopathic involvement was more common in SSc, contrary to neuropathic in paraneoplastic syndrome.
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Nakane S, Mukaino A, Ihara E, Ogawa Y. Autoimmune gastrointestinal dysmotility: the interface between clinical immunology and neurogastroenterology. Immunol Med 2020; 44:74-85. [DOI: 10.1080/25785826.2020.1797319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Shunya Nakane
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan
| | - Akihiro Mukaino
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan
| | - Eikichi Ihara
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Abstract
PURPOSE OF REVIEW Autonomic disorders sometimes occur in the context of systemic autoimmune disease or as a direct consequence of autoimmunity against the nervous system. This article provides an overview of autonomic disorders with potential autoimmune etiology. RECENT FINDINGS Recent evidence highlights a close association between the autonomic nervous system and inflammation. The autonomic nervous system regulates immune function, and autonomic manifestations may occur in a number of systemic autoimmune diseases. In a few instances, autoimmunity directly influences autonomic function. Autoimmune autonomic ganglionopathy is the prototypic antibody-mediated autonomic disorder. Over time, a better understanding of the clinical spectrum of autoimmune autonomic ganglionopathy, the significance of ganglionic nicotinic acetylcholine receptor antibodies, other immune-mediated autonomic neuropathies, and autonomic manifestations of other systemic or neurologic autoimmune disorders has emerged. SUMMARY Autoimmune autonomic disorders may be challenging, but correct identification of these conditions is important. In some cases, potential exists for effective immunomodulatory treatment.
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Nakane S, Mukaino A, Higuchi O, Yasuhiro M, Takamatsu K, Yamakawa M, Watari M, Tawara N, Nakahara KI, Kawakami A, Matsuo H, Ando Y. A comprehensive analysis of the clinical characteristics and laboratory features in 179 patients with autoimmune autonomic ganglionopathy. J Autoimmun 2020; 108:102403. [PMID: 31924415 DOI: 10.1016/j.jaut.2020.102403] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/29/2019] [Accepted: 01/01/2020] [Indexed: 12/12/2022]
Abstract
The clinical importance of autoantibodies against the ganglionic acetylcholine receptor (gAChR) remains to be fully elucidated. We aimed to identify the clinical characteristics of autoimmune autonomic ganglionopathy (AAG) in patients with gAChR autoantibodies. For this cohort investigation, serum samples were obtained from patients with AAG between 2012 and 2018 in Japan. We measured the levels of autoantibodies against gAChRα3 and gAChRβ4 and evaluated clinical features, as well as assessing the laboratory investigation results among the included patients. A total of 179 patients tested positive for antibodies, including 116 gAChRα3-positive, 13 gAChRβ4-positive, and 50 double antibody-positive patients. Seropositive AAG patients exhibited widespread autonomic dysfunction. Extra-autonomic manifestations including sensory disturbance, central nervous system involvement, endocrine disorders, autoimmune diseases, and tumours were present in 118 patients (83%). We observed significant differences in the frequencies of several autonomic and extra-autonomic symptoms among the three groups. Our 123I-metaiodobenzylguanidine myocardial scintigraphy analysis of the entire cohort revealed that the heart-to-mediastinum ratio had decreased by 80%. The present study is the first to demonstrate that patients with AAG who are seropositive for anti-gAChRβ4 autoantibodies exhibit unique autonomic and extra-autonomic signs. Decreased cardiac uptake occurred in most cases, indicating that 123I- metaiodobenzylguanidine myocardial scintigraphy may be useful for monitoring AAG. Therefore, our findings indicate that gAChRα3 and gAChRβ4 autoantibodies cause functional changes in postganglionic fibres in the autonomic nervous system and extra-autonomic manifestations in seropositive patients with AAG.
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Affiliation(s)
- Shunya Nakane
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan; Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan.
| | - Akihiro Mukaino
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan; Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital, Kumamoto, Japan.
| | - Osamu Higuchi
- Department of Clinical Research, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan; Department of Neuroimmunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Maeda Yasuhiro
- Department of Clinical Research, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan; Department of Neuroimmunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; Department of Neurology, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan.
| | - Koutaro Takamatsu
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Makoto Yamakawa
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Mari Watari
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Nozomu Tawara
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Kei-Ichi Nakahara
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Atsushi Kawakami
- Department of Immunology and Rheumatology, Unit of Translational Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
| | - Hidenori Matsuo
- Department of Clinical Research, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan; Department of Neurology, National Hospital Organization Nagasaki Kawatana Medical Center, Nagasaki, Japan.
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
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Nakane S. [Autoimmune autonomic ganglionopathy]. Rinsho Shinkeigaku 2019; 59:783-790. [PMID: 31761837 DOI: 10.5692/clinicalneurol.cn-001354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Autoimmune autonomic ganglionopathy (AAG) is an acquired immune-mediated disorder of widespread autonomic failure. Approximately half of the patients with AAG have the autoantibodies against the neuronal nicotinic acetylcholine receptor (AChR) in autonomic ganglia. These ganglionic AChR antibodies have the potential to mediate the synaptic transmission in sympathetic, parasympathetic, and enteric ganglia. Therefore, seropositive AAG patients exhibit various autonomic symptoms. Extra-autonomic manifestations (coexistence with brain involvement, sensory disturbance, endocrine disorders, autoimmune diseases and tumors) are present in many patients with AAG. The nicotinic AChRs comprise a family of abundantly expressed ligand-gated cation channels found throughout the central and peripheral nervous systems. Moreover, limited manifestations of autoimmune dysautonomia including autoimmune gastrointestinal dysmotility are newly recognized clinical entity. Although combined immunomodulatory therapy is beneficial for almost all patients with AAG, several case reports of some AAG patients with small benefit exist. This review focuses on the recent progress in the clinical approaches of AAG and its related disorders involving the role of autoantibodies and clinical practice.
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Affiliation(s)
- Shunya Nakane
- Department of Molecular Neurology and Therapeutics, Kumamoto University Hospital
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Turner LE, Pittock SJ, McEvoy MT, Flanagan EP. Overnight loss of pigmented hair in autoimmune autonomic neuropathy treated with IVIg. NEUROLOGY-NEUROIMMUNOLOGY & NEUROINFLAMMATION 2019; 6:6/6/e620. [PMID: 31554670 PMCID: PMC6807653 DOI: 10.1212/nxi.0000000000000620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 08/09/2019] [Indexed: 11/26/2022]
Affiliation(s)
- Lindsey E Turner
- From the Undergraduate Research Employment Program (L.E.T.), Neuroimmunology, Mayo Clinic; Department of Neurology (S.J.P., E.P.F.), Department of Laboratory Medicine and Pathology (S.J.P., E.P.F.), and Department of Dermatology (M.T.M.), Mayo Clinic, Rochester, MN
| | - Sean J Pittock
- From the Undergraduate Research Employment Program (L.E.T.), Neuroimmunology, Mayo Clinic; Department of Neurology (S.J.P., E.P.F.), Department of Laboratory Medicine and Pathology (S.J.P., E.P.F.), and Department of Dermatology (M.T.M.), Mayo Clinic, Rochester, MN
| | - Marian T McEvoy
- From the Undergraduate Research Employment Program (L.E.T.), Neuroimmunology, Mayo Clinic; Department of Neurology (S.J.P., E.P.F.), Department of Laboratory Medicine and Pathology (S.J.P., E.P.F.), and Department of Dermatology (M.T.M.), Mayo Clinic, Rochester, MN
| | - Eoin P Flanagan
- From the Undergraduate Research Employment Program (L.E.T.), Neuroimmunology, Mayo Clinic; Department of Neurology (S.J.P., E.P.F.), Department of Laboratory Medicine and Pathology (S.J.P., E.P.F.), and Department of Dermatology (M.T.M.), Mayo Clinic, Rochester, MN.
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27
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Golden EP, Vernino S. Autoimmune autonomic neuropathies and ganglionopathies: epidemiology, pathophysiology, and therapeutic advances. Clin Auton Res 2019; 29:277-288. [DOI: 10.1007/s10286-019-00611-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 05/03/2019] [Indexed: 12/12/2022]
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Nakane S, Mukaino A, Higuchi O, Watari M, Maeda Y, Yamakawa M, Nakahara K, Takamatsu K, Matsuo H, Ando Y. Autoimmune autonomic ganglionopathy: an update on diagnosis and treatment. Expert Rev Neurother 2018; 18:953-965. [PMID: 30352532 DOI: 10.1080/14737175.2018.1540304] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Autoimmune autonomic ganglionopathy (AAG) is an acquired immune-mediated disorder that leads to autonomic failure. The disorder is associated with autoantibodies to the ganglionic nicotinic acetylcholine receptor (gAChR). We subsequently reported that AAG is associated with an overrepresentation of psychiatric symptoms, sensory disturbance, autoimmune diseases, and endocrine disorders. Area covered: The aim of this review was to describe AAG and highlight its pivotal pathophysiological aspects, clinical features, laboratory examinations, and therapeutic options. Expert commentary: AAG is a complex neuroimmunological disease, these days considered as an autonomic failure with extra-autonomic manifestations (and various limited forms). Further comprehension of the pathophysiology of this disease is required, especially the mechanisms of the extra-autonomic manifestations should be elucidated. There is the possibility that the co-presence of antibodies that were directed against the other subunits in both the central and peripheral nAChRs in the serum of the AAG patients. Some patients improve with immunotherapies such as IVIg and/or corticosteroid and/or plasma exchange. 123I-MIBG myocardial scintigraphy may be a useful tool to monitor the therapeutic effects of immunotherapies.
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Affiliation(s)
- Shunya Nakane
- a Department of Neurology, Graduate School of Medical Sciences , Kumamoto University , Kumamoto , Japan.,b Department of Molecular Neurology and Therapeutics , Kumamoto University Hospital , Kumamoto , Japan
| | - Akihiro Mukaino
- a Department of Neurology, Graduate School of Medical Sciences , Kumamoto University , Kumamoto , Japan.,b Department of Molecular Neurology and Therapeutics , Kumamoto University Hospital , Kumamoto , Japan
| | - Osamu Higuchi
- c Department of Neurology and Clinical Research , Nagasaki Kawatana Medical Center , Nagasaki , Japan
| | - Mari Watari
- a Department of Neurology, Graduate School of Medical Sciences , Kumamoto University , Kumamoto , Japan
| | - Yasuhiro Maeda
- c Department of Neurology and Clinical Research , Nagasaki Kawatana Medical Center , Nagasaki , Japan
| | - Makoto Yamakawa
- a Department of Neurology, Graduate School of Medical Sciences , Kumamoto University , Kumamoto , Japan
| | - Keiichi Nakahara
- a Department of Neurology, Graduate School of Medical Sciences , Kumamoto University , Kumamoto , Japan
| | - Koutaro Takamatsu
- a Department of Neurology, Graduate School of Medical Sciences , Kumamoto University , Kumamoto , Japan
| | - Hidenori Matsuo
- c Department of Neurology and Clinical Research , Nagasaki Kawatana Medical Center , Nagasaki , Japan
| | - Yukio Ando
- a Department of Neurology, Graduate School of Medical Sciences , Kumamoto University , Kumamoto , Japan
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Naides SJ. The role of the laboratory in the expanding field of neuroimmunology: Autoantibodies to neural targets. J Immunol Methods 2018; 463:1-20. [PMID: 30300607 DOI: 10.1016/j.jim.2018.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 04/12/2018] [Indexed: 12/15/2022]
Abstract
Accelerated identification of autoantibodies associated with previously idiopathic neurological disease has provided insights into disease mechanisms, enhanced understanding of neurological function, and opportunities for improved therapeutic interventions. The role of the laboratory in the expanding field of neuroimmunology is critical as specific autoantibody identification provides guidance to clinicians in diagnosis, prognosis, tumor search strategies, and therapeutic interventions. The number of specific autoantibodies identified continues to increase and newer testing strategies increase efficiencies in the laboratory and availability to clinicians. The need for broadly targeted efficient testing is underscored by the variability in clinical presentation and tumor associations attributable to a specific autoantibody, and conversely the various autoantibody specificities that can be the cause of a given clinical presentation. While many of the antineural antibodies were first recognized in the setting of neoplastic disease, idiopathic autoimmune neurological disease in the absence of underlying tumor is increasingly recognized. Appropriation of therapeutic modalities used to treat autoimmune disease to treat these autoantibody mediated neurological diseases has improved patient outcomes. Interaction between clinicians and laboratorians is critical to our understanding of these diseases and optimization of the clinical benefits of our increasing knowledge in neuroimmunology.
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Affiliation(s)
- Stanley J Naides
- Immunology R&D, Quest Diagnostics Nichols Institute, 33608 Ortega Highway, San Juan Capistrano, CA 92675, USA.
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Lütt A, Michel K, Krüger D, Volz MS, Nassir M, Schulz E, Poralla L, Tangermann P, Bojarski C, Höltje M, Teegen B, Stöcker W, Schemann M, Siegmund B, Prüss H. High prevalence and functional effects of serum antineuronal antibodies in patients with gastrointestinal disorders. Neurogastroenterol Motil 2018; 30:e13292. [PMID: 29345029 DOI: 10.1111/nmo.13292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 12/20/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Antineuronal antibodies can be associated with both gastrointestinal (GI) and brain disorders. For example, antibodies against the potassium channel subunit dipeptidyl-peptidase-like protein-6 (DPPX) bind to neurons in the central nervous system (CNS) and myenteric plexus and cause encephalitis, commonly preceded by severe unspecific GI symptoms. We therefore investigated the prevalence of antineuronal antibodies indicative of treatable autoimmune CNS etiologies in GI patients. METHODS Serum samples of 107 patients (Crohn's disease n = 42, ulcerative colitis n = 16, irritable bowel syndrome n = 13, others n = 36) and 44 healthy controls were screened for anti-DPPX and further antineuronal antibodies using immunofluorescence on rat brain and intestine and cell-based assays. Functional effects of high-titer reactive sera were assessed in organ bath and Ussing chamber experiments and compared to non-reactive patient sera. KEY RESULTS Twenty-one of 107 patients (19.6%) had antibodies against the enteric nervous system, and 22 (20.6%) had anti-CNS antibodies, thus significantly exceeding frequencies in healthy controls (4.5% each). Screening on cell-based assays excluded established antienteric antibodies. Antibody-positive sera were not associated with motility effects in organ bath experiments. However, they induced significant, tetrodotoxin (TTX)-insensitive secretion in Ussing chambers compared to antibody-negative sera. CONCLUSIONS & INFERENCES Antineuronal antibodies were significantly more frequent in GI patients and associated with functional effects on bowel secretion. Future studies will determine whether such antibodies indicate patients who might benefit from additional antibody-directed therapies. However, well-characterized encephalitis-related autoantibodies such as against DPPX were not detected, underlining their rarity in routine cohorts.
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Affiliation(s)
- A Lütt
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany.,Department of Neurology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - K Michel
- Human Biology, Technical University of Munich, Freising, Germany
| | - D Krüger
- Human Biology, Technical University of Munich, Freising, Germany
| | - M S Volz
- Medical Department (Gastroenterology, Infectious Diseases and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - M Nassir
- Medical Department (Gastroenterology, Infectious Diseases and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - E Schulz
- Medical Department (Gastroenterology, Infectious Diseases and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - L Poralla
- Medical Department (Gastroenterology, Infectious Diseases and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - P Tangermann
- Medical Department (Gastroenterology, Infectious Diseases and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - C Bojarski
- Medical Department (Gastroenterology, Infectious Diseases and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - M Höltje
- Institute for Integrative Neuroanatomy, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - B Teegen
- Institute for Experimental Immunology affiliated with Euroimmun, Lübeck, Germany
| | - W Stöcker
- Institute for Experimental Immunology affiliated with Euroimmun, Lübeck, Germany
| | - M Schemann
- Human Biology, Technical University of Munich, Freising, Germany
| | - B Siegmund
- Medical Department (Gastroenterology, Infectious Diseases and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - H Prüss
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany.,Department of Neurology, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Autoimmune autonomic neuropathies: time to look beyond autoimmune autonomic ganglionopathy. Clin Auton Res 2018; 28:7-8. [DOI: 10.1007/s10286-017-0496-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 12/21/2017] [Indexed: 10/18/2022]
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Seronegative autoimmune autonomic neuropathy: a distinct clinical entity. Clin Auton Res 2017; 28:115-123. [DOI: 10.1007/s10286-017-0493-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 12/16/2017] [Indexed: 10/18/2022]
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Adult-onset Opsoclonus-Myoclonus Syndrome Associated With Ganglionic Acetylcholine Receptor Autoantibody. Neurologist 2016; 21:99-100. [PMID: 27801769 DOI: 10.1097/nrl.0000000000000098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Opsoclonus-myoclonus syndrome (OMS) may have a toxin induced, parainfectious, or paraneoplastic etiology. Several autoantibodies have been associated with adult-onset OMS, most commonly antineuronal nuclear antibody 2 (Ri), and it is most frequently associated with breast or small cell lung cancer. The nicotinic ganglionic acetylcholine receptor autoantibody (α3-AChR Ab) has not been described in association. CASE REPORT A 46-year-old woman was evaluated for symptoms of oscillopsia, tremor, gait imbalance, and mild cognitive deficits that began 6 weeks prior. Neurological examination demonstrated opsoclonus, myoclonus, and mild gait ataxia. Laboratory evaluation revealed an elevated α3-AChR Ab at 0.27 nmol/L (normal ≤0.02 nmol/L) with no other autoantibodies or infectious etiology detected. Thorough screening revealed no evidence of associated malignancy. Immunotherapy with weekly methylprednisolone led to significant improvement. CONCLUSIONS This first reported case of α3-AChR Ab positivity in the setting of adult-onset OMS expands the spectrum of associated autoantibodies. The mechanism of disease may be linked to cholinergic nuclei within the brainstem. This case suggests including α3-AChR Ab in the evaluation of adult-onset OMS, and highlights the importance of further understanding α3-AChR within the brain.
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Mukaino A, Nakane S, Higuchi O, Nakamura H, Miyagi T, Shiroma K, Tokashiki T, Fuseya Y, Ochi K, Umeda M, Nakazato T, Akioka S, Maruoka H, Hayashi M, Igarashi SI, Yokoi K, Maeda Y, Sakai W, Matsuo H, Kawakami A. Insights from the ganglionic acetylcholine receptor autoantibodies in patients with Sjögren's syndrome. Mod Rheumatol 2016; 26:708-15. [PMID: 26873295 DOI: 10.3109/14397595.2016.1147404] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE It is not known whether autonomic neuropathy is a feature of Sjögren's syndrome (SS) or whether it is related to circulating antiganglionic acetylcholine receptor (gAChR) antibodies. The goal of the present study was to investigate the autonomic dysfunction in patients with SS and the associations between autonomic dysfunction, anti-gAChR antibodies, and clinical features of SS. METHODS (1) The first observational study tested for the presence of gAChR antibodies in the serum samples from 39 patients with SS (absent information regarding autonomic symptoms) and healthy volunteers. (2) In the second study, serological and clinical data from 10 Japanese patients diagnosed with SS were reviewed. These patients showed autonomic dysfunction, and luciferase immunoprecipitation systems (LIPS) test was conducted to detect anti-α3 and anti-β4 gAChR antibodies. (3) In the final analysis, we combined the data of seropositive SS patients with autonomic symptom from the first study with all of the patients from the second study, and analyzed the clinical features. RESULTS (1) The LIPS assay revealed that anti-gAChRα3 and anti-gAChRβ4 antibodies were detected in the sera from patients with SS (23.1%, 9/39). Five of nine SS patients had autonomic symptoms. (2) Anti-α3 and anti-β4 gAChR antibodies were also detected in 80.0% (8/10) of patients with SS with autonomic symptoms. Six of the ten patients were diagnosed as having SS after neurological symptoms developed. These seropositive patients had predominant and severe autonomic symptoms and were diagnosed with autonomic neuropathy. (3) Thirteen of fifteen SS patients with autonomic symptoms (86.7%) were seropositive for anti-gAChR antibodies, and we confirmed sicca complex, orthostatic hypotension, upper and lower gastrointestinal (GI) symptoms, and bladder dysfunction at high rates. CONCLUSION The present results suggest the possibility of anti-gAChR antibodies aiding the diagnostics of SS with autonomic dysfunction.
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Affiliation(s)
- Akihiro Mukaino
- a Department of Clinical Neuroscience and Neurology , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan
| | - Shunya Nakane
- b Department of Clinical Research and.,c Department of Neurology , Nagasaki Kawatana Medical Center , Nagasaki , Japan
| | | | - Hideki Nakamura
- d Department of Immunology and Rheumatology , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan
| | - Tomo Miyagi
- e Department of Cardiovascular Medicine, Nephrology and Neurology , University of the Ryukyu School of Medicine , Okinawa , Japan
| | - Kanako Shiroma
- e Department of Cardiovascular Medicine, Nephrology and Neurology , University of the Ryukyu School of Medicine , Okinawa , Japan
| | - Takashi Tokashiki
- e Department of Cardiovascular Medicine, Nephrology and Neurology , University of the Ryukyu School of Medicine , Okinawa , Japan
| | - Yasuhiro Fuseya
- f Department of Neurology , Kitano Hospital Medical Research Institute , Osaka , Japan
| | - Kazuhide Ochi
- g Department of Neurology , Hiroshima University Hospital , Hiroshima , Japan
| | - Masataka Umeda
- d Department of Immunology and Rheumatology , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan
| | - Tetsuya Nakazato
- h Department of Neurology , Sapporo Yamanoue Hospital , Sapporo , Japan
| | - Shinji Akioka
- i Department of Pediatrics, Graduate School of Medical Science , Kyoto Prefectural University of Medicine , Kyoto , Japan
| | - Hiroyuki Maruoka
- j Department of Neurology and Neurological Science, and Predictive and Preventive Medicine , Tokyo Medical and Dental University , Tokyo , Japan
| | | | - Shu-Ichi Igarashi
- l Department of Neurology , Niigata City General Hospital , Niigata , Japan , and
| | - Katsunori Yokoi
- m Department of Neurology , Anjo Kosei Hospital , Aichi , Japan
| | - Yasuhiro Maeda
- c Department of Neurology , Nagasaki Kawatana Medical Center , Nagasaki , Japan
| | - Waka Sakai
- c Department of Neurology , Nagasaki Kawatana Medical Center , Nagasaki , Japan
| | - Hidenori Matsuo
- c Department of Neurology , Nagasaki Kawatana Medical Center , Nagasaki , Japan
| | - Atsushi Kawakami
- d Department of Immunology and Rheumatology , Nagasaki University Graduate School of Biomedical Sciences , Nagasaki , Japan
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Abstract
Autoimmune autonomic disorders occur because of an immune response directed against sympathetic, parasympathetic, and enteric ganglia, autonomic nerves, or central autonomic pathways. In general, peripheral autoimmune disorders manifest with either generalized or restricted autonomic failure, whereas central autoimmune disorders manifest primarily with autonomic hyperactivity. Some autonomic disorders are generalized, and others are limited in their anatomic extent, e.g., isolated gastrointestinal dysmotility. Historically, these disorders were poorly recognized, and thought to be neurodegenerative. Over the last 20 years a number of autoantibody biomarkers have been discovered that have enabled the identification of certain patients as having an autoimmune basis for either autonomic failure or hyperactivity. Peripheral autoimmune autonomic disorders include autoimmune autonomic ganglionopathy (AAG), paraneoplastic autonomic neuropathy, and acute autonomic and sensory neuropathy. AAG manifests with acute or subacute onset of generalized or selective autonomic failure. Antibody targeting the α3 subunit of the ganglionic-type nicotinic acetylcholine receptor (α3gAChR) is detected in approximately 50% of cases of AAG. Some other disorders are characterized immunologically by paraneoplastic antibodies with a high positive predictive value for cancer, such as antineuronal nuclear antibody, type 1 (ANNA-1: anti-Hu); others still are seronegative. Recognition of an autoimmune basis for autonomic disorders is important, as their manifestations are disabling, may reflect an underlying neoplasm, and have the potential to improve with a combination of symptomatic and immune therapies.
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Affiliation(s)
- Andrew Mckeon
- Departments of Neurology and Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
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Pittock SJ, Palace J. Paraneoplastic and idiopathic autoimmune neurologic disorders: approach to diagnosis and treatment. HANDBOOK OF CLINICAL NEUROLOGY 2016; 133:165-83. [PMID: 27112677 DOI: 10.1016/b978-0-444-63432-0.00010-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Autoimmune neurology is a rapidly emerging new subspecialty that encompasses the diagnosis and treatment of neurologic disorders with an autoimmune (paraneoplastic or noncancer-associated) basis. The last decade has seen a dramatic rise in the discovery of neural-specific autoantibodies and their target antigens. Laboratory testing, on a service basis, is now available for most of these neural-specific autoantibodies and they serve as diagnostic markers, in some instances directing the physician toward specific cancer types (e.g., N-methyl-d-aspartate receptor antibodies for teratoma; CRMP5-IgG for small-cell cancer) and assisting in therapeutic decision making. Antibodies targeting intracellular proteins (nuclear and intracytoplasmic enzymes, transcription factors, and RNA binding proteins) serve as markers of cytotoxic effector T-cell-mediated injury and are generally poorly responsive to immunotherapy. By contrast, antibodies targeting plasma membrane proteins that are extracellular and accessible (neurotransmitter receptors, ion channels, water channels, and channel-complex proteins) may act as pathogenic effectors and often imply immunotherapy responsiveness. Magnetic resonance imaging, electrophysiologic studies, functional imaging, and neuropsychologic evaluations provide objective evidence of neurologic dysfunction by which the success of immunotherapy may be measured.
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Affiliation(s)
- Sean J Pittock
- Departments of Laboratory Medicine/Pathology and Neurology, Mayo Clinic, College of Medicine, Rochester, MN, USA.
| | - Jacqueline Palace
- Department of Clinical Neurology, John Radcliffe Hospital, Oxford, UK
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Hinson SR, Lennon VA, Pittock SJ. Autoimmune AQP4 channelopathies and neuromyelitis optica spectrum disorders. HANDBOOK OF CLINICAL NEUROLOGY 2016; 133:377-403. [PMID: 27112688 DOI: 10.1016/b978-0-444-63432-0.00021-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Neuromyelitis optica (NMO) spectrum disorders (SD) represent an evolving group of central nervous system (CNS)-inflammatory autoimmune demyelinating diseases unified by a pathogenic autoantibody specific for the aquaporin-4 (AQP4) water channel. It was historically misdiagnosed as multiple sclerosis (MS), which lacks a distinguishing biomarker. The discovery of AQP4-IgG moved the focus of CNS demyelinating disease research from emphasis on the oligodendrocyte and myelin to the astrocyte. NMO is recognized today as a relapsing disease, extending beyond the optic nerves and spinal cord to include brain (especially in children) and skeletal muscle. Brain magnetic resonance imaging abnormalities, identifiable in 60% of patients at the second attack, are consistent with MS in 10% of cases. NMOSD-typical lesions (another 10%) occur in AQP4-enriched regions: circumventricular organs (causing intractable nausea and vomiting) and the diencephalon (causing sleep disorders, endocrinopathies, and syndrome of inappropriate antidiuresis). Advances in understanding the immunobiology of AQP4 autoimmunity have necessitated continuing revision of NMOSD clinical diagnostic criteria. Assays that selectively detect pathogenic AQP4-IgG targeting extracellular epitopes of AQP4 are promising prognostically. When referring to AQP4 autoimmunity, we suggest substituting the term "autoimmune aquaporin-4 channelopathy" for the term "NMO spectrum disorders." Randomized clinical trials are currently assessing the efficacy and safety of newer immunotherapies. Increasing therapeutic options based on understanding the molecular pathogenesis is anticipated to improve the outcome for patients with AQP4 channelopathy.
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Affiliation(s)
- Shannon R Hinson
- Departments of Laboratory Medicine/Pathology and Neurology, Mayo Clinic, College of Medicine, Rochester, MN, USA
| | - Vanda A Lennon
- Departments of Laboratory Medicine/Pathology and Neurology, Mayo Clinic, College of Medicine, Rochester, MN, USA
| | - Sean J Pittock
- Departments of Laboratory Medicine/Pathology and Neurology, Mayo Clinic, College of Medicine, Rochester, MN, USA.
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Bradl M, Lassmann H. Neurologic autoimmunity: mechanisms revealed by animal models. HANDBOOK OF CLINICAL NEUROLOGY 2016; 133:121-43. [PMID: 27112675 DOI: 10.1016/b978-0-444-63432-0.00008-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Over the last decade, neurologic autoimmunity has become a major consideration in the diagnosis and management of patients with many neurologic presentations. The nature of the associated antibodies and their targets has led to appreciation of the importance of the accessibility of the target antigen to antibodies, and a partial understanding of the different mechanisms that can follow antibody binding. This chapter will first describe the basic principles of autoimmune inflammation and tissue damage in the central and peripheral nervous system, and will then demonstrate what has been learnt about neurologic autoimmunity from circumstantial clinical evidence and from passive, active, and occasionally spontaneous or genetic animal models. It will cover neurologic autoimmune diseases ranging from disorders of neuromuscular transmission, peripheral and ganglionic neuropathy, to diseases of the central nervous system, where autoantibodies are either pathogenic and cause destruction or changes in function of their targets, where they are harmless bystanders of T-cell-mediated tissue damage, or are not involved at all. Finally, this chapter will summarize the relevance of current animal models for studying the different neurologic autoimmune diseases, and it will identify aspects where future animal models need to be improved to better reflect the disease reality experienced by affected patients, e.g., the chronicity or the relapsing/remitting nature of their disease.
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Affiliation(s)
- Monika Bradl
- Department of Neuroimmunology, Center for Brain Research, Medical University Vienna, Vienna, Austria.
| | - Hans Lassmann
- Department of Neuroimmunology, Center for Brain Research, Medical University Vienna, Vienna, Austria
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Rituximab-based therapy and long-term control of autoimmune autonomic ganglionopathy. Clin Auton Res 2015; 25:255-8. [DOI: 10.1007/s10286-015-0299-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/12/2015] [Indexed: 11/25/2022]
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Li Y, Jammoul A, Mente K, Li J, Shields RW, Vernino S, Rae-Grant A. Clinical experience of seropositive ganglionic acetylcholine receptor antibody in a tertiary neurology referral center. Muscle Nerve 2015; 52:386-91. [DOI: 10.1002/mus.24559] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 12/17/2014] [Accepted: 12/19/2014] [Indexed: 12/12/2022]
Affiliation(s)
- Yuebing Li
- Department of Neurology; Desk S90, Cleveland Clinic Foundation; 9500 Euclid Avenue Cleveland Ohio 44195 USA
| | - Adham Jammoul
- Department of Neurology; Desk S90, Cleveland Clinic Foundation; 9500 Euclid Avenue Cleveland Ohio 44195 USA
| | - Karin Mente
- Department of Neurology; Desk S90, Cleveland Clinic Foundation; 9500 Euclid Avenue Cleveland Ohio 44195 USA
| | - Jianbo Li
- Department of Quantitative Health Sciences; Learner Research Institute, Cleveland Clinic Foundation; Cleveland Ohio USA
| | - Robert W. Shields
- Department of Neurology; Desk S90, Cleveland Clinic Foundation; 9500 Euclid Avenue Cleveland Ohio 44195 USA
| | - Steven Vernino
- Department of Neurology and Neurotherapeutics; University of Texas Southwestern Medical Center; Dallas Texas USA
| | - Alexander Rae-Grant
- Department of Neurology; Desk S90, Cleveland Clinic Foundation; 9500 Euclid Avenue Cleveland Ohio 44195 USA
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Abstract
PURPOSE OF REVIEW This article focuses on the most prevalent forms of autonomic neuropathies, but also discusses conditions such as focal and dysfunctional syndromes (altered autonomic function in the absence of structural lesions). The goal of this review is to allow the reader to promptly recognize these disorders, identify potentially reversible or treatable causes, and implement the appropriate treatment as well as supportive care. RECENT FINDINGS Secondary forms of autonomic neuropathies (eg, diabetes mellitus, amyloidosis) are much more common than primary forms, of which autoimmune ganglioneuropathies represent a major component. However, the spectrum of the latter is continuously evolving and has diagnostic and therapeutic implications. Testing modalities such as autonomic testing, serum autoimmune antibody testing, and skin biopsies are becoming more widely available. SUMMARY Autonomic neuropathies are relatively common conditions, and, because of the prognostic implications as well as impact on patient quality of life, they should be promptly recognized and treated aggressively. Testing is critical as other conditions may mimic autonomic neuropathies. Treatment is symptomatic in many cases, but specific therapies are also available in selected autonomic neuropathies.
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Joubert B, Honnorat J. Autoimmune channelopathies in paraneoplastic neurological syndromes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:2665-76. [PMID: 25883091 DOI: 10.1016/j.bbamem.2015.04.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 03/10/2015] [Accepted: 04/03/2015] [Indexed: 01/17/2023]
Abstract
Paraneoplastic neurological syndromes and autoimmune encephalitides are immune neurological disorders occurring or not in association with a cancer. They are thought to be due to an autoimmune reaction against neuronal antigens ectopically expressed by the underlying tumour or by cross-reaction with an unknown infectious agent. In some instances, paraneoplastic neurological syndromes and autoimmune encephalitides are related to an antibody-induced dysfunction of ion channels, a situation that can be labelled as autoimmune channelopathies. Such functional alterations of ion channels are caused by the specific fixation of an autoantibody upon its target, implying that autoimmune channelopathies are usually highly responsive to immuno-modulatory treatments. Over the recent years, numerous autoantibodies corresponding to various neurological syndromes have been discovered and their mechanisms of action partially deciphered. Autoantibodies in neurological autoimmune channelopathies may target either directly ion channels or proteins associated to ion channels and induce channel dysfunction by various mechanisms generally leading to the reduction of synaptic expression of the considered channel. The discovery of those mechanisms of action has provided insights on the regulation of the synaptic expression of the altered channels as well as the putative roles of some of their functional subdomains. Interestingly, patients' autoantibodies themselves can be used as specific tools in order to study the functions of ion channels. This article is part of a Special Issue entitled: Membrane channels and transporters in cancers.
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Affiliation(s)
- Bastien Joubert
- University Lyon 1, University Lyon, Rue Guillaume Paradin, 69372 Lyon Cedex 08, France; INSERM, UMR-S1028, CNRS, UMR-5292, Lyon Neuroscience Research Center, Neuro-Oncology and Neuro-Inflammation Team, 7, Rue Guillaume Paradin, Lyon Cedex 08F-69372, France
| | - Jérôme Honnorat
- University Lyon 1, University Lyon, Rue Guillaume Paradin, 69372 Lyon Cedex 08, France; INSERM, UMR-S1028, CNRS, UMR-5292, Lyon Neuroscience Research Center, Neuro-Oncology and Neuro-Inflammation Team, 7, Rue Guillaume Paradin, Lyon Cedex 08F-69372, France; National Reference Centre for Paraneoplastic Neurological Diseases, hospices civils de Lyon, hôpital neurologique, 69677 Bron, France; Hospices Civils de Lyon, Neuro-oncology, Hôpital Neurologique, F-69677 Bron, France.
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Nakane S, Higuchi O, Koga M, Kanda T, Murata K, Suzuki T, Kurono H, Kunimoto M, Kaida KI, Mukaino A, Sakai W, Maeda Y, Matsuo H. Clinical features of autoimmune autonomic ganglionopathy and the detection of subunit-specific autoantibodies to the ganglionic acetylcholine receptor in Japanese patients. PLoS One 2015; 10:e0118312. [PMID: 25790156 PMCID: PMC4366081 DOI: 10.1371/journal.pone.0118312] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 01/14/2015] [Indexed: 01/08/2023] Open
Abstract
Autoimmune autonomic ganglionopathy (AAG) is a rare acquired channelopathy that is characterized by pandysautonomia, in which autoantibodies to ganglionic nicotinic acetylcholine receptors (gAChR) may play a central role. Radioimmunoprecipitation (RIP) assays have been used for the sensitive detection of autoantibodies to gAChR in the serum of patients with AAG. Here, we developed luciferase immunoprecipitation systems (LIPS) to diagnose AAG based on IgGs to both the α3 and β4 gAChR subunits in patient serum. We reviewed the serological and clinical data of 50 Japanese patients who were diagnosed with AAG. With the LIPS testing, we detected anti-α3 and -β4 gAChR antibodies in 48% (24/50) of the patients. A gradual mode of onset was more common in the seropositive group than in the seronegative group. Patients with AAG frequently have orthostatic hypotension and upper and lower gastrointestinal tract symptoms, with or without anti-gAChR. The occurrence of autonomic symptoms was not significantly different between the seropositive and seronegative group, with the exception of achalasia in three patients from the seropositive group. In addition, we found a significant overrepresentation of autoimmune diseases in the seropositive group and endocrinological abnormalities as an occasional complication of AAG. Our results demonstrated that the LIPS assay was a useful novel tool for detecting autoantibodies against gAChR in patients with AAG.
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Affiliation(s)
- Shunya Nakane
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Nagasaki, Japan; Department of Neurology, Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Osamu Higuchi
- Department of Clinical Research, Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Michiaki Koga
- Department of Neurology and Clinical Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Takashi Kanda
- Department of Neurology and Clinical Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Kenya Murata
- Department of Neurology, Wakayama Medical University, Wakayama, Japan
| | - Takashi Suzuki
- Department of Neurology, Joetsu General Hospital, Niigata, Japan
| | - Hiroko Kurono
- Department of Neurology, Saiseikai Kanagawa Prefecture Hospital, Kanagawa, Japan
| | - Masanari Kunimoto
- Department of Neurology, Saiseikai Kanagawa Prefecture Hospital, Kanagawa, Japan
| | - Ken-ichi Kaida
- Division of Neurology, Department of Internal Medicine 3, National Defense Medical College, Saitama, Japan
| | - Akihiro Mukaino
- Department of Clinical Neuroscience and Neurology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Waka Sakai
- Department of Neurology, Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Yasuhiro Maeda
- Department of Neurology, Nagasaki Kawatana Medical Center, Nagasaki, Japan
| | - Hidenori Matsuo
- Department of Neurology, Nagasaki Kawatana Medical Center, Nagasaki, Japan
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Flanagan EP, Saito YA, Lennon VA, McKeon A, Fealey RD, Szarka LA, Murray JA, Foxx-Orenstein AE, Fox JC, Pittock SJ. Immunotherapy trial as diagnostic test in evaluating patients with presumed autoimmune gastrointestinal dysmotility. Neurogastroenterol Motil 2014; 26:1285-97. [PMID: 25039328 PMCID: PMC4149849 DOI: 10.1111/nmo.12391] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 06/07/2014] [Indexed: 01/02/2023]
Abstract
BACKGROUND Chronic gastrointestinal dysmotility greatly impacts the quality of life. Treatment options are limited and generally symptomatic. Neural autoimmunity is an under-recognized etiology. We evaluated immunotherapy as an aid to diagnosing autoimmune gastrointestinal dysmotility (AGID). METHODS Twenty-three subjects evaluated at the Mayo Clinic for suspected AGID (August 2006-February 2014) fulfilled the following criteria: (1) prominent symptoms of gastrointestinal dysmotility with abnormalities on scintigraphy-manometry; (2) serological evidence or personal/family history of autoimmune disease; (3) treated by immunotherapy on a trial basis, 6-12 weeks (intravenous immune globulin, 16; or methylprednisolone, 5; or both, 2). Response was defined subjectively (symptomatic improvement) and objectively (gastrointestinal scintigraphy/manometry studies). KEY RESULTS Symptoms at presentation: constipation, 18/23; nausea or vomiting, 18/23; weight loss, 17/23; bloating, 13/23; and early satiety, 4/23. Thirteen patients had personal/family history of autoimmunity. Sixteen had neural autoantibodies and 19 had extra-intestinal autonomic testing abnormalities. Cancer was detected in three patients. Preimmunotherapy scintigraphy revealed slowed transit (19/21 evaluated; gastric, 11; small bowel, 12; colonic, 11); manometry studies were abnormal in 7/8. Postimmunotherapy, 17 (74%) had improvement (both symptomatic and scintigraphic, five; symptomatic alone, eight; scintigraphic alone, four). Nine responders re-evaluated had scintigraphic evidence of improvement. The majority of responders who were re-evaluated had improvement in autonomic testing (six of seven) or manometry (two of two). CONCLUSIONS & INFERENCES This proof of principle study illustrates the importance of considering an autoimmune basis for idiopathic gastrointestinal dysmotility and supports the utility of a diagnostic trial of immunotherapy.
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Affiliation(s)
- E P Flanagan
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
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45
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Nishihara H, Koga M, Higuchi O, Tasaki A, Ogasawara JI, Kawai M, Nakane S, Kanda T. Combined immunomodulatory therapies resulted in stepwise recovery in autoimmune autonomic ganglionopathy. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/cen3.12137] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hideaki Nishihara
- Department of Neurology and Clinical Neuroscience; Graduate School of Medicine; Yamaguchi University; Yamaguchi Japan
| | - Michiaki Koga
- Department of Neurology and Clinical Neuroscience; Graduate School of Medicine; Yamaguchi University; Yamaguchi Japan
| | - Osamu Higuchi
- Department of Clinical Research; Nagasaki Kawatana Medical Center; Nagasaki Japan
| | - Ayako Tasaki
- Department of Neurology and Clinical Neuroscience; Graduate School of Medicine; Yamaguchi University; Yamaguchi Japan
| | - Jun-ichi Ogasawara
- Department of Neurology and Clinical Neuroscience; Graduate School of Medicine; Yamaguchi University; Yamaguchi Japan
| | - Motoharu Kawai
- Department of Neurology and Clinical Neuroscience; Graduate School of Medicine; Yamaguchi University; Yamaguchi Japan
| | - Shunya Nakane
- Department of Clinical Research; Nagasaki Kawatana Medical Center; Nagasaki Japan
| | - Takashi Kanda
- Department of Neurology and Clinical Neuroscience; Graduate School of Medicine; Yamaguchi University; Yamaguchi Japan
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Abstract
The peripheral nervous system (PNS) comprises the cranial nerves, the spinal nerves with their roots and rami, dorsal root ganglia neurons, the peripheral nerves, and peripheral components of the autonomic nervous system. Cell-mediated or antibody-mediated immune attack on the PNS results in distinct clinical syndromes, which are classified based on the tempo of illness, PNS component(s) involved, and the culprit antigen(s) identified. Insights into the pathogenesis of autoimmune neuropathy have been provided by ex vivo immunologic studies, biopsy materials, electrophysiologic studies, and experimental models. This review article summarizes earlier seminal observations and highlights the recent progress in our understanding of immunopathogenesis of autoimmune neuropathies based on data from animal models.
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Affiliation(s)
- Betty Soliven
- Address correspondence and reprint requests to Dr. Betty Soliven, Room S225, Department of Neurology MC2030, University of Chicago, 5841 S. Maryland Avenue, Chicago, IL 60637 or
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47
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Kobayashi S, Yokoyama S, Maruta T, Negami M, Muroyama A, Mitsumoto Y, Iwasa K, Yamada M, Yoshikawa H. Autoantibody-induced internalization of nicotinic acetylcholine receptor α3 subunit exogenously expressed in human embryonic kidney cells. J Neuroimmunol 2013; 257:102-6. [PMID: 23313381 DOI: 10.1016/j.jneuroim.2012.12.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 12/19/2012] [Accepted: 12/20/2012] [Indexed: 10/27/2022]
Abstract
Autoantibody against nicotinic acetylcholine receptor (nAChR) α3 subunit has been implicated in the pathogenesis of paraneoplastic neurological syndrome. To examine the effect of anti-α3 subunit autoantibody on cell-surface nAChRs, we established human embryonic kidney 293 cells stably co-expressing α3 and β4 subunits. Upon incubation with seropositive patient's serum, this cell line showed co-accumulation of patient's IgG and α3 subunits in the cytoplasm. These data support the hypothesis that anti-α3 subunit autoantibody induces internalization of cell-surface nAChRs and thereby impairs synaptic transmission.
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Affiliation(s)
- Shota Kobayashi
- Laboratory of Alternative Medicine and Experimental Therapeutics, Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Hokuriku University, Kanazawa, Ishikawa 920-1181, Japan
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48
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Meeusen JW, Haselkorn KE, Fryer JP, Kryzer TJ, Gibbons SJ, Xiao Y, Lennon VA. Gastrointestinal hypomotility with loss of enteric nicotinic acetylcholine receptors: active immunization model in mice. Neurogastroenterol Motil 2013; 25:84-8.e10. [PMID: 23072523 PMCID: PMC3535544 DOI: 10.1111/nmo.12030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Autoimmune gastrointestinal dysmotility (AGID) is a limited form of dysautonomia. The only proven effector to date is IgG specific for ganglionic nicotinic-acetylcholine receptors containing α3 subunits [α3*- nicotinic acetylcholine receptor (nAChR)]. Rabbits immunized with recombinant α3-polypeptide produce α3*-nAChR autoantibodies, and profound AGID ensues. Human and rabbit α3*-nAChR-specific-IgGs induce transient hypomotility when injected into mice. Here, we describe success and problems encountered inducing gastrointestinal hypomotility in mice by active immunization. METHODS We repeatedly injected young adult mice of seven different strains susceptible to autoimmunity (spontaneous diabetes or neural antigen immunization-induced myasthenia gravis or encephalomyelitis) with: (i) α3-polypeptide, intradermally or (ii) live α3*-nAChR-expressing xenogeneic cells, intraperitoneally. We measured serum α3*-nAChR-IgG twice monthly, and terminally assessed blue dye gastrointestinal transit, total small intestinal α3*-nAChR content (radiochemically) and myenteric plexus neuron numbers (immunohistochemically, ileal-jejunal whole-mount preparations). KEY RESULTS Standard cutaneous inoculation with α3-polypeptide was minimally immunogenic, regardless of dose. Intraperitoneally injected live cells were potently immunogenic. Self-reactive α3*-nAChR-IgG was induced only by rodent immunogen; small intestinal transit slowing and enteric α3*-nAChR loss required high serum levels. Ganglionic neurons were not lost. CONCLUSIONS & INFERENCES Autoimmune gastrointestinal dysmotility is inducible in mice by active immunization. Accompanying enteric α3*-nAChR reduction without neuronal death is consistent with an IgG-mediated rather than T cell-mediated pathogenesis, as is improvement of symptoms in patients receiving antibody-depleting therapies.
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Affiliation(s)
- Jeffrey W. Meeusen
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | - James P. Fryer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Thomas J. Kryzer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Simon J. Gibbons
- Department of Enteric Neuroscience Program, Mayo Clinic, Rochester, MN
| | - Yingxian Xiao
- Department of Pharmacology and Physiology, Georgetown University School of Medicine, Washington, DC
| | - Vanda A. Lennon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN,Department of Immunology, Mayo Clinic, Rochester, MN,Department of Neurology, Mayo Clinic, Rochester, MN
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Kleopa KA. Autoimmune channelopathies of the nervous system. Curr Neuropharmacol 2012; 9:458-67. [PMID: 22379460 PMCID: PMC3151600 DOI: 10.2174/157015911796557966] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 03/16/2010] [Accepted: 03/16/2010] [Indexed: 12/20/2022] Open
Abstract
Ion channels are complex transmembrane proteins that orchestrate the electrical signals necessary for normal function of excitable tissues, including the central nervous system, peripheral nerve, and both skeletal and cardiac muscle. Progress in molecular biology has allowed cloning and expression of genes that encode channel proteins, while comparable advances in biophysics, including patch-clamp electrophysiology and related techniques, have made the functional assessment of expressed proteins at the level of single channel molecules possible. The role of ion channel defects in the pathogenesis of numerous disorders has become increasingly apparent over the last two decades. Neurological channelopathies are frequently genetically determined but may also be acquired through autoimmune mechanisms. All of these autoimmune conditions can arise as paraneoplastic syndromes or independent from malignancies. The pathogenicity of autoantibodies to ion channels has been demonstrated in most of these conditions, and patients may respond well to immunotherapies that reduce the levels of the pathogenic autoantibodies. Autoimmune channelopathies may have a good prognosis, especially if diagnosed and treated early, and if they are non-paraneoplastic. This review focuses on clinical, pathophysiologic and therapeutic aspects of autoimmune ion channel disorders of the nervous system.
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Affiliation(s)
- Kleopas A Kleopa
- Neurology Clinics and Neuroscience Laboratory, The Cyprus Institute of Neurology and Genetics, Cyprus
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