1
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Rossor T, Lim M. Immune-mediated encephalitis. Dev Med Child Neurol 2024; 66:307-316. [PMID: 37438863 DOI: 10.1111/dmcn.15694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 07/14/2023]
Abstract
A neurological deterioration in a child presents a significant worry to the family and often a diagnostic challenge to the clinician. A dysregulated immune response is implicated in a wide and growing spectrum of neurological conditions. In this review we consider the current paradigms in which immune-mediated encephalopathies are considered; the development of paediatric specific diagnostic criteria that facilitate early consideration and treatment of immune-mediated conditions and the limitations and potential developments in diagnostic testing. We consider the expanding phenotype of myelin oligodendrocyte glycoprotein antibody, the spectrum of virus-associated encephalopathy syndromes, and the strategies that have been employed to build an evidence base for the management of these rare conditions. Looking forward we explore the potential for advanced molecular investigations to improve our understanding of immune-mediated encephalitides and guide future treatment strategies. Recently characterized immune-mediated central nervous system disorders include new antibodies causing previously recognized phenotypes. Aggregation of conditions with similar clinical triggers, and characterization of unique imaging features in virus-associated encephalopathy syndromes. Immune treatment iscurrently guided by meta-analysis of individualized patient data and/or multi-national consensus.
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Affiliation(s)
- Thomas Rossor
- Children's Neurosciences, Evelina London Children's Hospital at Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Ming Lim
- Children's Neurosciences, Evelina London Children's Hospital at Guy's and St Thomas' NHS Foundation Trust, London, UK
- Department Women and Children's Health, School of Life Course Sciences, King's College London, UK
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2
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Yao Y, Zhang O, Gu L, Zhang X. Analysis of risk factors for a poor functional prognosis and relapse in patients with autoimmune encephalitis. J Neuroimmunol 2022; 369:577899. [DOI: 10.1016/j.jneuroim.2022.577899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/23/2022] [Accepted: 05/22/2022] [Indexed: 12/18/2022]
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3
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Pfeiffer HCV, Wickstrom R, Skov L, Sørensen CB, Sandvig I, Gjone IH, Ygberg S, Visscher C, Idring Nordstrom S, Herner LB, Hesselmark E, Hedderly T, Lim M, Debes NM. Clinical guidance for diagnosis and management of suspected Pediatric Acute-onset Neuropsychiatric Syndrome in the Nordic countries. Acta Paediatr 2021; 110:3153-3160. [PMID: 33848371 DOI: 10.1111/apa.15875] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/16/2021] [Accepted: 03/19/2021] [Indexed: 12/13/2022]
Abstract
Pediatric acute-onset neuropsychiatric syndrome is a clinical concept used to describe a subgroup of children with sudden onset of psychiatric and somatic symptoms. The diagnostic term and especially management of children differs depending on the clinical setting to which they present, and the diagnosis and management is controversial. The aim of this paper is to propose a clinical guidance including homogenous diagnostic work-up and management of paediatric acute onset neuropsychiatric syndrome within the Nordic countries. The guidance is authored by a Nordic-UK working group consisting of paediatric neurologist, child psychiatrists and psychologists from Denmark, Norway, Sweden and Great Britain, and is the result of broad consensus. CONCLUSION: Consensus was achieved in the collaboration on work-up and treatment of patients with paediatric acute-onset neuropsychiatric syndrome, which we hope will improve and homogenise patient care and enable future collaborative research in the field.
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Affiliation(s)
- Helle Cecilie Viekilde Pfeiffer
- Department of Child Neurology Oslo University Hospital Oslo Norway
- Department of Pediatrics and Adolescence Medicine Copenhagen University Hospital Hvidovre Copenhagen Denmark
| | - Ronny Wickstrom
- Department of Women´s and Children's Health Neuropediatric Unit Karolinska Institutet Stockholm Sweden
| | - Liselotte Skov
- Department of Pediatrics and Adolescence Medicin Copenhagen University Hospital Herlev Copenhagen Denmark
| | - Camilla Birgitte Sørensen
- Department of Pediatrics and Adolescence Medicin Copenhagen University Hospital Herlev Copenhagen Denmark
| | - Inger Sandvig
- Department of Child Neurology Oslo University Hospital Oslo Norway
| | - Inger Helene Gjone
- Division of Pediatric and Adolescent Medicine Department of Child and Adolescent Mental Health in Hospitals Oslo University Hospital Oslo Norway
| | - Sofia Ygberg
- Department of Women´s and Children's Health Neuropediatric Unit Karolinska Institutet Stockholm Sweden
| | - Caroline Visscher
- Centre for Psychiatry Research Department of Clinical Neuroscience Region Stockholm, Child and Adolescent Psychiatry Research Center Karolinska Institutet & Stockholm Healthcare Services Stockholm Sweden
| | - Selma Idring Nordstrom
- Centre for Psychiatry Research Department of Clinical Neuroscience Region Stockholm, Child and Adolescent Psychiatry Research Center Karolinska Institutet & Stockholm Healthcare Services Stockholm Sweden
| | - Linn Breen Herner
- Division of Pediatric and Adolescent Medicine Department of Child and Adolescent Mental Health in Hospitals Oslo University Hospital Oslo Norway
| | - Eva Hesselmark
- Centre for Psychiatry Research Department of Clinical Neuroscience Region Stockholm, Child and Adolescent Psychiatry Research Center Karolinska Institutet & Stockholm Healthcare Services Stockholm Sweden
| | - Tammy Hedderly
- Tic and Neurodevelopmental Movements Service (TANDeM) Children's Neurosciences Centre Evelina London Children's Hospital, Guys and St Thomas NHS Foundation Trust London UK
| | - Ming Lim
- Children's Neurosciences Evelina London Children's Hospital at Guy's and St Thomas’ NHS Foundation Trust King's Health Partners Academic Health Science Centre London UK
| | - Nanette Marinette Debes
- Department of Pediatrics and Adolescence Medicin Copenhagen University Hospital Herlev Copenhagen Denmark
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4
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Taylor K, Muscal E, Van Mater H. The Role of Pediatric Rheumatologists in Autoimmune Brain Disease. Rheum Dis Clin North Am 2021; 48:343-369. [PMID: 34798957 DOI: 10.1016/j.rdc.2021.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The spectrum of autoimmune and inflammatory brain diseases continues to evolve with medical advances facilitating both the detection of inflammation of the central nervous system and the discovery of novel disease mechanisms. The clinical overlap of these disorders with primary rheumatic diseases and the efficacy of immunotherapy have led to strong partnerships between pediatric rheumatologists, neurologists, psychiatrists, and other providers in the care of children with these conditions. Early diagnosis and initiation of targeted therapy improve clinical outcomes, highlighting the importance of interdisciplinary collaborative care.
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Affiliation(s)
- Kathryn Taylor
- Pediatrics, Division of Neurology, Duke University, Durham, NC, USA.
| | - Eyal Muscal
- Division of Rheumatology and Co-appointment in Neurology and Developmental Neuroscience, Baylor College of Medicine, Houston, TX, USA
| | - Heather Van Mater
- Pediatrics, Division of Rheumatology, Duke University, Durham, NC, USA
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5
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Yin D, Chen S, Liu J. Sleep Disturbances in Autoimmune Neurologic Diseases: Manifestation and Pathophysiology. Front Neurosci 2021; 15:687536. [PMID: 34421519 PMCID: PMC8377735 DOI: 10.3389/fnins.2021.687536] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/19/2021] [Indexed: 01/12/2023] Open
Abstract
Autoimmune neurologic diseases are a new category of immune-mediated disease demonstrating a widely varied spectrum of clinical manifestations. Recently, sleep disturbances in patients with autoimmune neurologic diseases have been reported to have an immense negative impact on the quality of life. Excessive daytime sleep, rapid eye movement sleep behavior disorder (RBD), and narcolepsy are the most frequent sleep disorders associated with autoimmune neurologic diseases. Sleep disturbances might be the initial symptoms of disease or persist throughout the course of the disease. In this review, we have discussed sleep disturbances in different autoimmune neurologic diseases and their potential pathophysiological mechanisms.
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Affiliation(s)
- Dou Yin
- Department of Neurology, Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sheng Chen
- Department of Neurology, Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun Liu
- Department of Neurology, Institute of Neurology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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6
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Velásquez-Torres A, Díaz-Forero A, Talero-Gutiérrez C. The Insomnia Plague in Fictional Macondo. Perm J 2020; 24:19.192. [PMID: 32663127 DOI: 10.7812/tpp/19.192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Disease and medicine are found throughout Gabriel García Márquez's work. This article examines the insomnia plague described in the novel One Hundred Years of Solitude and performs a differential diagnosis exercise with conditions that affect both sleep and memory. The main finding is that the insomnia plague narrated by García Márquez, with its clinical manifestations, the sequence of symptoms, and its resolution, cannot be associated with any specific diagnosis. However, similarities to and differences from several clinical conditions are discussed, as well as the relation between the neurophysiologic phenomena of sleep and memory.
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Affiliation(s)
- Alejandro Velásquez-Torres
- Neuroscience Research Group Neuros, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Andrés Díaz-Forero
- Undergraduate Neuroscience Research Group Semineuros, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
| | - Claudia Talero-Gutiérrez
- Neuroscience Research Group Neuros, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogota, Colombia
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7
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Hoffmann JA, Goldman MP, Bachur RG. A Teenager With Acute Anterograde Amnesia. Pediatr Emerg Care 2020; 36:e295-e297. [PMID: 29346236 DOI: 10.1097/pec.0000000000001408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Isolated amnesia is an uncommon presenting complaint in the pediatric age group. We report the case of an 18-year-old woman who presented with the acute onset of memory difficulty and an otherwise normal neurologic examination. Brain magnetic resonance imaging demonstrated inflammation in the bilateral temporal lobes. Serum and cerebrospinal fluid testing ultimately revealed a diagnosis of autoimmune encephalitis. Although rare, the acute onset of isolated amnesia deserves a prompt, comprehensive evaluation.
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Affiliation(s)
- Jennifer A Hoffmann
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, MA
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8
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Qiu X, Zhang H, Li D, Wang J, Jiang Z, Zhou Y, Xu P, Zhang J, Feng Z, Yu C, Xu Z. Analysis of Clinical Characteristics and Poor Prognostic Predictors in Patients With an Initial Diagnosis of Autoimmune Encephalitis. Front Immunol 2019; 10:1286. [PMID: 31231392 PMCID: PMC6567932 DOI: 10.3389/fimmu.2019.01286] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 05/20/2019] [Indexed: 12/16/2022] Open
Abstract
Purpose: We aimed to retrospectively analyze the clinical features, laboratory and imaging results, and predictors of poor prognosis for patients with an initial diagnosis of autoimmune encephalitis (AE) at the Affiliated Hospital of Zunyi Medical University. Methods: Fifty patients with an initial diagnosis of AE who were admitted to our hospital from May 2014 to May 2018 were enrolled retrospectively. Clinical characteristics and experimental test data, including the neutrophil-to-lymphocyte ratio (NLR), were collected from medical records within 24 h of admission. Independent prognostic factors were determined by multivariate logistic regression analysis. A good or poor prognosis for patients was defined based on the modified Rankin Scale (mRS). The correlation between the immunotherapy latency and prognostic mRS score was determined using the Spearman rank correlation test. Results: Univariate analysis indicated that increased NLR (P = 0.001), decreased lymphocyte counts (P = 0.001), low serum albumin (P = 0.017), consciousness disorders (P = 0.001), epileptic seizures (P = 0.007), extrapyramidal symptoms (P = 0.042), abnormal electroencephalogram (EEG) findings (P = 0.001), abnormal brain magnetic resonance imaging (MRI) findings (P = 0.003), and pulmonary infection complications (P = 0.000) were associated with the poor prognosis of AE. Multivariate logistic regression analysis showed that NLR (odds ratio [OR] 2.169, 95% confidence interval [CI] 1.029-4.570; P < 0.05) was an independent risk factor for predicting the poor prognosis of AE. NLR > 4.45 was suggested as the cut-off threshold for predicting the adverse outcomes of AE. In addition, we revealed that there was a positive correlation between immunotherapy latency and mRS score (rs = 0.535, P < 0.05). Conclusions: NLR may have predictive value for the poor outcomes of AE. Early initiation of immunotherapy is associated with a good prognosis.
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Affiliation(s)
- Xiaowei Qiu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China.,Key Laboratory of Brain Science, Zunyi Medical University, Guizhou, China
| | - Haiqing Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Dongxu Li
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China.,Key Laboratory of Brain Science, Zunyi Medical University, Guizhou, China
| | - Jing Wang
- Department of Preventive Health Care, Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Zhigang Jiang
- School of Public Health, Zunyi Medical University, Guizhou, China
| | - Yuanzhong Zhou
- School of Public Health, Zunyi Medical University, Guizhou, China
| | - Ping Xu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Jun Zhang
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Zhanhui Feng
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guizhou, China
| | - Changyin Yu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China.,Key Laboratory of Brain Science, Zunyi Medical University, Guizhou, China
| | - Zucai Xu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Guizhou, China.,Key Laboratory of Brain Science, Zunyi Medical University, Guizhou, China
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9
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Abstract
Brain has been considered as an immune-privileged site for centuries owing to the presence of blood-brain barrier, absent lymphatic drainage, and antigen-presenting cells. However, the present prevailing concept is of immune surveillance where brain is continuously surveyed by immune cells. However, the presence of immune cells in central nervous system (CNS) brings the risk of inflammation and autoimmunity involving both T and B cell mediated pathways. These mechanisms form the underlying pathology in a wide spectrum of pediatric CNS diseases manifesting as acquired neurological deficits. Overlapping, heterogenous, and ambiguous clinical features often delays the diagnosis. Although not always pathognomonic, magnetic resonance imaging can be an important biomarker leading to early diagnosis, prognostication, and systematic follow-up pf these diseases. This review describes the spectrum of different pediatric inflammatory disorders and their pertinent imaging features illustrated with clinical examples.
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Affiliation(s)
| | - Karthik Muthusamy
- Department of Neurology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Manohar Shroff
- Diagnostic Imaging, Hospital for Sick Children, Toronto, Ontario, Canada
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10
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Sa M, Hacohen Y, Alderson L, Chong WKK, Anderson G, Jacques TS, Neubauer D, Szczepanik E, Lim M, Kaliakatsos M. Immunotherapy-responsive childhood neurodegeneration with systemic and central nervous system inflammation. Eur J Paediatr Neurol 2018; 22:882-888. [PMID: 29759327 DOI: 10.1016/j.ejpn.2018.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 04/03/2018] [Accepted: 04/22/2018] [Indexed: 11/25/2022]
Abstract
Subacute neuroregression in association with raised neopterin and overexpression of interferon stimulated genes (ISGs) could indicate a type 1 interferonopathy. Here we describe a novel immunotherapy-responsive, clinico-immunological and imaging phenotype with evidence of innate immune activation. Three children (patient 1: 22-month-old boy; patient 2: 5-year-old girl; patient 3: 4-year-old girl) presented with asymmetric bilateral mixed dystonia and spasticity, regression in language (expressive more than receptive) and bulbar symptoms with no evidence of seizures. Symptoms evolved over several weeks to months. Brain MRI changes mimicked cerebral atrophy, initially asymmetric. CSF revealed raised neopterins. Blood RNA assay showed abnormal overexpression of ISGs and transient raised alanine aminotransferase (ALT). Importantly, all three children were treated with intravenous methylprednisolone and immunoglobulin with significant and sustained improvement in their motor and language function, and normalisation of imaging. Immune-mediated encephalitis can masquerade as subacute neuroregression.
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Affiliation(s)
- Mario Sa
- Paediatric Neurology, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Yael Hacohen
- Paediatric Neurology, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Lucy Alderson
- Physiotherapy Department, Great Ormond Street Hospital or Children, London, United Kingdom
| | - W K Kling Chong
- Paediatric Neuroradiology, Great Ormond Street Hospital or Children, London, United Kingdom
| | - Glenn Anderson
- Department of Histopathology, Great Ormond Street for Children NHS Trust, London, United Kingdom
| | - Thomas S Jacques
- Department of Histopathology, Great Ormond Street for Children NHS Trust, London, United Kingdom; Developmental Biology and Cancer Program, UCL Great Ormond Street Institute of Child Health, United Kingdom
| | - David Neubauer
- Department of Child, Adolescent & Developmental Neurology, University Children's Hospital, Ljubljana, Slovenia
| | - Elzbieta Szczepanik
- Clinic of Neurology of Children and Adolescents, Institute of Mother and Child, Warsaw, Poland
| | - Ming Lim
- Children's Neurosciences, Evelina London Children's Hospital @ Guy's and St Thomas' NHS Foundation Trust, King's Health Partners Academic Health Science Centre, London, United Kingdom; Faculty of Life Sciences and Medicine, King's College London, United Kingdom
| | - Marios Kaliakatsos
- Paediatric Neurology, Great Ormond Street Hospital for Children, London, United Kingdom.
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11
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Neuroimmune disorders of the central nervous system in children in the molecular era. Nat Rev Neurol 2018; 14:433-445. [DOI: 10.1038/s41582-018-0024-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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12
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Blomberg J, Gottfries CG, Elfaitouri A, Rizwan M, Rosén A. Infection Elicited Autoimmunity and Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: An Explanatory Model. Front Immunol 2018; 9:229. [PMID: 29497420 PMCID: PMC5818468 DOI: 10.3389/fimmu.2018.00229] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 01/26/2018] [Indexed: 12/13/2022] Open
Abstract
Myalgic encephalomyelitis (ME) often also called chronic fatigue syndrome (ME/CFS) is a common, debilitating, disease of unknown origin. Although a subject of controversy and a considerable scientific literature, we think that a solid understanding of ME/CFS pathogenesis is emerging. In this study, we compiled recent findings and placed them in the context of the clinical picture and natural history of the disease. A pattern emerged, giving rise to an explanatory model. ME/CFS often starts after or during an infection. A logical explanation is that the infection initiates an autoreactive process, which affects several functions, including brain and energy metabolism. According to our model for ME/CFS pathogenesis, patients with a genetic predisposition and dysbiosis experience a gradual development of B cell clones prone to autoreactivity. Under normal circumstances these B cell offsprings would have led to tolerance. Subsequent exogenous microbial exposition (triggering) can lead to comorbidities such as fibromyalgia, thyroid disorder, and orthostatic hypotension. A decisive infectious trigger may then lead to immunization against autoantigens involved in aerobic energy production and/or hormone receptors and ion channel proteins, producing postexertional malaise and ME/CFS, affecting both muscle and brain. In principle, cloning and sequencing of immunoglobulin variable domains could reveal the evolution of pathogenic clones. Although evidence consistent with the model accumulated in recent years, there are several missing links in it. Hopefully, the hypothesis generates testable propositions that can augment the understanding of the pathogenesis of ME/CFS.
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Affiliation(s)
- Jonas Blomberg
- Department of Medical Sciences, Uppsala University, Clinical Microbiology, Academic Hospital, Uppsala, Sweden
| | | | - Amal Elfaitouri
- Department of Infectious Disease and Tropical Medicine, Faculty of Public Health, Benghazi University, Benghazi, Libya
| | - Muhammad Rizwan
- Department of Medical Sciences, Uppsala University, Clinical Microbiology, Academic Hospital, Uppsala, Sweden
| | - Anders Rosén
- Department of Clinical and Experimental Medicine, Division of Cell Biology, Linköping University, Linköping, Sweden
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13
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Abstract
Childhood epileptic encephalopathies are age-dependent disorders of the brain whose hallmarks include loss of neurologic function over time, abnormal electroencephalographic findings, and seizures. Ictal and interictal electrographic activity are conjointly thought to be at the root of the often devastating neuropsychological deterioration, which is specific to the maturing brain. The goals of treatment are not only to control seizures, but also to prevent or reverse neurologic loss of function. In general, time is of the essence in diagnosis, and experienced specialists should promptly design a treatment plan. Hormonal and immune therapies are at the forefront of treatment in many cases, with traditional antiepileptic drugs and surgery (when an identifiable lesion is present) playing a limited role. However, gold standard evidence for treatment of epileptic encephalopathies remains limited. Ongoing clinical and basic research may lead to better understanding of these catastrophic conditions and to better and more effective therapies.
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Affiliation(s)
- Hiroki Nariai
- Saul R. Korey Department of Neurology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Susan Duberstein
- Saul R. Korey Department of Neurology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA,Department of Pediatrics, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, NY, USA
| | - Shlomo Shinnar
- Saul R. Korey Department of Neurology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA,Department of Pediatrics, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, NY, USA,Department of Epidemiology and Population Health, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, NY, USA
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14
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Evaluation and Management of Autoimmune Encephalitis: A Clinical Overview for the Practicing Child Psychiatrist. Child Adolesc Psychiatr Clin N Am 2018; 27:37-52. [PMID: 29157501 DOI: 10.1016/j.chc.2017.08.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Medical conditions that present with psychiatric symptoms are becoming increasingly well-recognized in response to the emergence of the field of neuroimmunology. As the availability of testing for novel antineuronal antibodies has increased, so too has the clinical awareness of this diagnostic spectrum. Psychiatrists may have little exposure to this area of expertise, yet may be called on to assist in the diagnosis and treatment of patients with complex neuropsychiatric syndromes secondary to autoimmune encephalitis. This article summarizes the evaluation and management of patients with autoimmune encephalitis and describes emerging patterns in phenotype recognition.
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15
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Abstract
Pediatric autoimmune epileptic encephalopathies are predominantly characterized by the presence of autoantibodies to the surface of neuronal proteins, for example, N-methyl-d-aspartate (NMDA) receptor antibodies, but also include diseases with non-cell surface antibodies (eg, anti-Hu, glutamic-acid decarboxylase antibodies). In some cases with distinct clinical and para-clinical features, an autoimmune epileptic encephalopathy can be diagnosed without the presence of an antibody and will also respond favorably to immunotherapy. In this review, we summarize the common presentations of pediatric autoimmune epileptic encephalopathies, treatments, and outcomes, and report recent findings in the field of epilepsy, encephalopathy, and the immune system.
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Affiliation(s)
- Sukhvir Wright
- 1 Department of Pediatric Neurology, Birmingham Children's Hospital, Birmingham, United Kingdom
| | - Angela Vincent
- 2 Nuffield Department of Clinical Neurosciences, John Radcliffe University Hospital, Oxford, United Kingdom
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16
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Co DO, Bordini BJ, Meyers AB, Inglese C. Immune-Mediated Diseases of the Central Nervous System: A Specificity-Focused Diagnostic Paradigm. Pediatr Clin North Am 2017; 64:57-90. [PMID: 27894452 DOI: 10.1016/j.pcl.2016.08.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Immune-mediated diseases of the central nervous system show wide variability both symptomatically and with respect to underlying pathophysiology. Recognizing aberrant immunologic activity as the cause of neurologic dysfunction requires establishing as precise a neuroanatomic and functional phenotype as possible, and a diagnostic and therapeutic strategy that stabilizes the patient, excludes broad categories of disease via rapidly available diagnostic assays, and maintains a broad differential diagnosis that includes immune-mediated conditions. This process is aided by recognizing the appropriate clinical circumstances under which immune-mediated disease should be suspected, and how to differentiate these conditions from other causes of similar neurologic dysfunction.
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Affiliation(s)
- Dominic O Co
- Section of Pediatric Rheumatology, Department of Pediatrics, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI 53226, USA.
| | - Brett J Bordini
- Section of Hospital Medicine, Department of Pediatrics, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI 53226, USA
| | - Arthur B Meyers
- Department of Radiology, University of Central Florida College of Medicine, 6850 Lake Nona Blvd, Orlando, FL 32827, USA
| | - Christopher Inglese
- Section of Pediatric Neurology, Department of Neurology, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI 53226, USA
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17
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Affiliation(s)
- Carl E. Stafstrom
- Division of Pediatric Neurology, John M. Freeman Pediatric Epilepsy Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Eric H. Kossoff
- Division of Pediatric Neurology, John M. Freeman Pediatric Epilepsy Center, Johns Hopkins University School of Medicine, Baltimore, MD
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18
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Abstract
In this article, we review the treatment options for the pediatric epileptic encephalopathies and provide an update on the new and emerging therapies targeted at the underlying pathophysiology of many of these syndromes. We illustrate how the identification of the specific genetic and autoimmune causes has made possible the evaluation and development of novel, better targeted therapies, as and at times, avoidance of potentially offending agents.
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19
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Masdeu JC, Dalmau J, Berman KF. NMDA Receptor Internalization by Autoantibodies: A Reversible Mechanism Underlying Psychosis? Trends Neurosci 2016; 39:300-310. [PMID: 27130657 DOI: 10.1016/j.tins.2016.02.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 02/13/2016] [Accepted: 02/22/2016] [Indexed: 12/31/2022]
Abstract
Since the early 1990s it has been postulated that hypofunction of N-methyl-d-aspartate (NMDA) receptors in brain networks supporting perception and cognition underlies schizophrenic psychosis. Recently, NMDA receptor hypofunction was described in patients with psychotic manifestations who exhibited autoantibodies binding the GluN1 subunit of the receptor, and who improved when the level of these antibodies was lowered by immunomodulation. In this disorder, NMDA receptor antibodies decrease the availability of NMDA receptors by internalizing them. In this opinion article, we review this mechanism as well as data supporting or refuting the possibility that this disorder or similar autoimmune disorders affecting synaptic proteins, which are therefore treatable with immunomodulation, could account for some cases of idiopathic psychosis. We also suggest methodological approaches to clarify this issue.
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Affiliation(s)
- Joseph C Masdeu
- Houston Methodist Neurological Institute and Department of Neurology, Weill Cornell Medical College, Houston, TX 77030, USA.
| | - Josep Dalmau
- ICREA-IDIBAPS, Hospital Clinic, Service of Neurology, University of Barcelona, Barcelona, Spain; Department of Neurology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Karen F Berman
- Clinical and Translational Neuroscience Branch, National Institutes of Health, NIMH Intramural Research Program, Bethesda, MD 20892, USA
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Abstract
PURPOSE OF REVIEW Autoimmune epileptic encephalopathy is a potentially treatable neurological syndrome characterized by the coexistence of a neuronal antibody in serum and, often, cerebrospinal fluid. Patients present with combinations of seizures, neuropsychiatric features, movement disorder, and cognitive decline, but some patients have isolated seizures either at first presentation or during their illness. This review summarizes our current understanding of the roles of specific neuronal antibodies in epilepsy-related syndromes and aims to aid the clinician in diagnosis and treatment. RECENT FINDINGS Antigen discovery methods in three neuroimmunology centres independently identified antibodies to different subunits of the γ amino butyric acid-A receptor; high levels of these antibodies were found mainly in patients with severe refractory seizures. These and other antibodies were also found in a proportion (<10%) of children and adults with epilepsy. A clinical study comparing immunotherapy in patients with autoantibodies or without an identified target antigen found neuroinflammatory features were predictive of a therapeutic response. New in-vitro and in-vivo studies, and spontaneous animal models, have confirmed the pathogenicity and epileptogenicity of neuronal antibodies and their relevance to other mammals. SUMMARY Neuronal antibodies are an important cause of autoimmune epileptic encephalopathy, early recognition is important as there may be an underlying tumour, and early treatment is associated with a better outcome. In the absence of an antibody, the clinician should adopt a pragmatic approach and consider a trial of immunotherapy when other causes have been excluded.
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Affiliation(s)
- Sukhvir Wright
- aDepartment of Paediatric Neurology, Birmingham Children's Hospital, Birmingham, UK bNuffield Department of Clinical Neurosciences, John Radcliffe University Hospital, Oxford, UK
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21
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Abstract
Autoimmune neurologic diseases are of major clinical importance in children. Antibody-mediated diseases of the central nervous system are now increasingly recognized in childhood, where the antibodies bind to cell surface epitopes on neuronal or glial proteins, and the patients demonstrate either focal or more generalized clinical signs depending on the extent of brain regions targeted by the antibodies. The antibodies are directed towards ion channels, receptors, and membrane proteins; and the diseases include limbic encephalitis and N-methyl-d-aspartate receptor-antibody encephalitis, among many others. Additionally there are conditions where the wider immune system is implicated. Neurologic features like seizures, movement disorders, autonomic dysfunction, and sleep disorders, with neuroimaging and electrophysiologic features, may indicate a specific antibody-mediated or immune disorder. Often, phenotypic overlap is observed between these conditions, and phenotypic variation seen in children with the same condition. Nevertheless, many patients benefit from immunotherapy with substantial improvement, although huge efforts are still required to optimize the outcome for many patients. In many patients no antibodies have yet been identified, even though they respond to immunotherapies. Here we describe the known antibodies and associated diseases, discuss conditions that are thought to be immune-mediated but have no known immunologic biomarker, and provide guidelines for the investigation and classification of these disorders.
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Sleep disturbances in voltage-gated potassium channel antibody syndrome. Sleep Med 2015; 21:171-3. [PMID: 26922624 DOI: 10.1016/j.sleep.2015.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 11/10/2015] [Accepted: 11/16/2015] [Indexed: 01/17/2023]
Abstract
Voltage-gated potassium channels (VGKCs) are a family of membrane proteins responsible for controlling cell membrane potential. The presence of antibodies (Ab) against neuronal VGKC complexes aids in the diagnosis of idiopathic and paraneoplastic autoimmune neurologic disorders. The diagnosis of VGKC Ab-associated encephalopathy (VCKC Ab syndrome) should be suspected in patients with subacute onset of disorientation, confusion, and memory loss in the presence of seizures or a movement disorder. VGKC Ab syndrome may present with sleep-related symptoms, and the purpose of this communication is to alert sleep and neurology clinicians of this still-under-recognized condition. In this case, we are presenting the VGKC Ab syndrome which improved after treatment with solumedrol. The prompt recognition and treatment of this condition may prevent the morbidity associated with cerebral atrophy and the mortality associated with intractable seizures and electrolyte disturbances.
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Nosadini M, Mohammad SS, Ramanathan S, Brilot F, Dale RC. Immune therapy in autoimmune encephalitis: a systematic review. Expert Rev Neurother 2015; 15:1391-419. [DOI: 10.1586/14737175.2015.1115720] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Bamford A, Lim M. Autoimmune encephalitis following haematopoietic stem cell transplant: a new clinical entity or a previously unrecognised one? Transl Pediatr 2015; 4:327-30. [PMID: 26835396 PMCID: PMC4728994 DOI: 10.3978/j.issn.2224-4336.2015.10.04] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Alasdair Bamford
- 1 Department of Paediatric Infectious Diseases and Immunology, 2 Children's Neurosciences, Evelina London Children's Hospital at Guy's & St Thomas' NHS Trust, Kings Health Partners Academic Health Science Centre, London, UK ; 3 Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, UK
| | - Ming Lim
- 1 Department of Paediatric Infectious Diseases and Immunology, 2 Children's Neurosciences, Evelina London Children's Hospital at Guy's & St Thomas' NHS Trust, Kings Health Partners Academic Health Science Centre, London, UK ; 3 Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, Oxford, UK
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Therapeutic Plasma Exchange in Children with Acute Autoimmune Central Nervous System Disorders. Int J Artif Organs 2015; 38:494-500. [DOI: 10.5301/ijao.5000435] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2015] [Indexed: 12/19/2022]
Abstract
Background There is a growing evidence for autoimmunity in acute central nervous system (CNS) disorders and treatment with therapeutic plasma exchange (TPE) may be considered. The aim was to share our experience on the clinical application of TPE in these disorders and to present a reproducible protocol which can be used even in small children. Methods We present a series of 8 children aged 2-12 years with transverse myelitis, Bickerstaff's brainstem encephalitis, neuromyelitis optica, and acute paraneoplastic or unspecified encephalitis in whom TPE was used as a second-line or rescue treatment. Results A total of 104 TPE sessions were performed where 80–110 ml/kg of plasma was exchanged using 4% albumin solution and fresh frozen plasma. Six episodes of TPE-related adverse events were documented. Fibrinogen concentrations decreased after the first TPE, whereas platelets decreased gradually. One patient died in the course of the acute illness. Three children achieved a complete resolution of symptoms, 2 children have mild sequelae; whereas 2 children remain paraplegic after a follow-up of 3 to 17 months. Conclusions We report 8 children with presumably autoimmune-mediated, acute CNS disorders treated with TPE as a rescue therapy. Although the effect of TPE can only be inferred, 5 children had a good clinical outcome. TPE is feasible even in small children with acute autoimmune CNS disorders.
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