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https://www.readbyqxmd.com/read/28327523/methodological-challenges-in-protein-microarray-and-immunohistochemistry-for-the-discovery-of-novel-autoantibodies-in-paediatric-acute-disseminated-encephalomyelitis
#1
Patrick Peschl, Melanie Ramberger, Romana Höftberger, Karin Jöhrer, Matthias Baumann, Kevin Rostásy, Markus Reindl
Acute disseminated encephalomyelitis (ADEM) is a rare autoimmune-mediated demyelinating disease affecting mainly children and young adults. Differentiation to multiple sclerosis is not always possible, due to overlapping clinical symptoms and recurrent and multiphasic forms. Until now, immunoglobulins reactive to myelin oligodendrocyte glycoprotein (MOG antibodies) have been found in a subset of patients with ADEM. However, there are still patients lacking autoantibodies, necessitating the identification of new autoantibodies as biomarkers in those patients...
March 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28326889/aquaporin-4-autoimmunity-in-patients-with-systemic-lupus-erythematosus-a-predominantly-population-based-study
#2
Nasrin Asgari, Sven Jarius, Helle Laustrup, Hanne Pb Skejoe, Soeren T Lillevang, Brian G Weinshenker, Anne Voss
BACKGROUND: Serum immunoglobulin G targeting the astrocyte water channel aquaporin-4 (AQP4) in the central nervous system (CNS) is a biomarker for neuromyelitis optica spectrum disease (NMOSD). Co-existence of NMOSD with systemic lupus erythematosus (SLE) putatively suggests susceptibility to antibody-mediated autoimmune disease. OBJECTIVE: To estimate the prevalence of NMOSD in SLE and investigate the immunogenetic background for an association of NMOSD and SLE...
March 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28302134/microrna-142-regulates-inflammation-and-t-cell-differentiation-in-an-animal-model-of-multiple-sclerosis
#3
Farideh Talebi, Samira Ghorbani, Wing Fuk Chan, Roobina Boghozian, Farimah Masoumi, Sedigheh Ghasemi, Mohammed Vojgani, Christopher Power, Farshid Noorbakhsh
BACKGROUND: MicroRNAs have emerged as an important class of modulators of gene expression. These molecules influence protein synthesis through translational repression or degradation of mRNA transcripts. Herein, we investigated the potential role of miR-142a isoforms, miR-142a-3p and miR-142a-5p, in the context of autoimmune neuroinflammation. METHODS: The expression levels of two mature isoforms of miR-142 were measured in the brains of patients with multiple sclerosis (MS) and the CNS tissues from mice with experimental autoimmune encephalomyelitis (EAE), an animal model of MS...
March 16, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28284341/mog-antibody-associated-demyelinating-disease-of-the-cns-a-clinical-and-pathological-study-in-chinese-han-patients
#4
Lei Zhou, Yongheng Huang, Haiqing Li, Jie Fan, Jingzi Zhangbao, Hai Yu, Yuxin Li, Jiahong Lu, Chongbo Zhao, Chuanzhen Lu, Min Wang, Chao Quan
We aim to evaluate the clinical relevance of MOG-ab in a cohort of Chinese Han adults with CNS inflammatory demyelinating diseases (IDDs). MOG-ab and AQP4-ab were examined through a fixed cell based indirect immune-fluorescence assay in 86 patients with CNS-IDDs. MOG-ab was positive in 12 patients, while AQP4-ab was positive in 31 patients; none double positives. Optic neuritis (ON) was the most frequent symptom at onset (75.0%) or during the whole disease course (83.3%) of MOG-ab associated IDDs (MOG-IDDs); 79...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28248700/myelin-oligodendrocyte-glycoprotein-antibodies-how-clinically-useful-are-they
#5
Markus Reindl, Sven Jarius, Kevin Rostasy, Thomas Berger
PURPOSE OF REVIEW: Serum IgG autoantibodies against the myelin oligodendrocyte glycoprotein (MOG) are present in atypical demyelinating disorders such as neuromyelitis optica spectrum disorders (NMOSD) or acute disseminated encephalomyelitis. Whereas the role of aquaporin-4 antibodies as diagnostic markers for NMOSD is meanwhile well established, the role of MOG antibodies is less clear. RECENT FINDINGS: Initial studies suggested that MOG antibodies are associated with a more benign disease course than aquaporin-4antibodies...
February 28, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28125740/retinal-nerve-fiber-layer-may-be-better-preserved-in-mog-igg-versus-aqp4-igg-optic-neuritis-a-cohort-study
#6
Hadas Stiebel-Kalish, Itay Lotan, Judith Brody, Gabriel Chodick, Omer Bialer, Romain Marignier, Michael Bach, Mark Andrew Hellmann
BACKGROUND: Optic neuritis (ON) in patients with anti-myelin oligodendrocyte glycoprotein (MOG)-IgG antibodies has been associated with a better clinical outcome than anti-aquaporin 4 (AQP4)- IgG ON. Average retinal nerve fiber layer thickness (RNFL) correlates with visual outcome after ON. OBJECTIVES: The aim of this study was to examine whether anti-MOG-IgG ON is associated with better average RNFL compared to anti-AQP4-IgG ON, and whether this corresponds with a better visual outcome...
2017: PloS One
https://www.readbyqxmd.com/read/28111033/azathioprine-therapy-in-a-case-of-pediatric-multiple-sclerosis-that-was-seropositive-for-mog-igg
#7
Yifan Zhou, Qiao Huang, Tingting Lu, Xiaobo Sun, Ling Fang, Zhengqi Lu, Xueqiang Hu, Allan Kermode, Wei Qiu
There is a lack of evidence for treatment of pediatric multiple sclerosis (PedMS). Treatment using azathioprine for PedMS has not been reported. A 10-year-old boy with multiple sclerosis who was seropositive for antibodies against myelin oligodendrocyte glycoprotein (MOG)-IgG was treated with azathioprine plus oral methylprednisolone. The patient showed clinical and magnetic resonance imaging stability, with MOG-IgG seroconversion. There were no major side effects over a 5-year period. Azathioprine may be a treatment option, particularly in poor medical resource areas, for pediatric patients with multiple sclerosis who are seropositive for MOG-IgG...
April 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28105459/mog-antibody-positive-benign-unilateral-cerebral-cortical-encephalitis-with-epilepsy
#8
Ryo Ogawa, Ichiro Nakashima, Toshiyuki Takahashi, Kimihiko Kaneko, Tetsuya Akaishi, Yoshiki Takai, Douglas Kazutoshi Sato, Shuhei Nishiyama, Tatsuro Misu, Hiroshi Kuroda, Masashi Aoki, Kazuo Fujihara
OBJECTIVE: To describe the features of adult patients with benign, unilateral cerebral cortical encephalitis positive for the myelin oligodendrocyte glycoprotein (MOG) antibody. METHODS: In this retrospective, cross-sectional study, after we encountered an index case of MOG antibody-positive unilateral cortical encephalitis with epileptic seizure, we tested for MOG antibody using our in-house, cell-based assay in a cohort of 24 consecutive adult patients with steroid-responsive encephalitis of unknown etiology seen at Tohoku University Hospital (2008-2014)...
March 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28057865/cocapture-of-cognate-and-bystander-antigens-can-activate-autoreactive-b-cells
#9
Nicholas S R Sanderson, Maria Zimmermann, Luca Eilinger, Céline Gubser, Nicole Schaeren-Wiemers, Raija L P Lindberg, Stephanie K Dougan, Hidde L Ploegh, Ludwig Kappos, Tobias Derfuss
Autoantibodies against myelin oligodendrocyte glycoprotein (MOG) are associated with autoimmune central nervous system diseases like acute disseminated encephalomyelitis (ADEM). For ADEM, it is speculated that a preceding infection is the trigger of the autoimmune response, but the mechanism connecting the infection to the production of MOG antibodies remains a mystery. We reasoned that the ability of B cells to capture cognate antigen from cell membranes, along with small quantities of coexpressed "bystander" antigens, might enable B-cell escape from tolerance...
January 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28005176/the-mrz-reaction-as-a-highly-specific-marker-of-multiple-sclerosis-re-evaluation-and-structured-review-of-the-literature
#10
S Jarius, P Eichhorn, D Franciotta, H F Petereit, G Akman-Demir, M Wick, B Wildemann
BACKGROUND: It has long been known that the majority of patients with multiple sclerosis (MS) display an intrathecal, polyspecific humoral immune response to a broad panel of neurotropic viruses. This response has measles virus, rubella virus and varicella zoster virus as its most frequent constituents and is thus referred to as the MRZ reaction (MRZR). OBJECTIVE: Re-evaluation of the specificity of MRZR as a marker of MS. METHODS: Structured review of the existing English-, German- and Spanish-language literature on MRZR testing, with evaluation of MRZR in a cohort of 43 unselected patients with MS and other neurological diseases as a proof of principle...
December 22, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27994362/serological-markers-associated-with-neuromyelitis-optica-spectrum-disorders-in-south-india
#11
Lekha Pandit, Douglas Kazutoshi Sato, Sharik Mustafa, Toshiyuki Takahashi, Anitha D'Cunha, Chaithra Malli, Akshatha Sudhir, Kazuo Fujihara
BACKGROUND: Neuromyelitis optica spectrum disorders (NMOSDs) represent 20% of all demyelinating disorders in South India. No studies have determined the seroprevalence to both antibodies against aquaporin-4* and antimyelin oligodendrocyte glycoprotein antibody (anti-MOG+) in this population. OBJECTIVE: To identify and characterize seropositive patients for anti-aquaporin-4 antibody (anti-AQP4+) and anti-MOG+ in South India. MATERIALS AND METHODS: We included 125 consecutive patients (15 children) who were serologically characterized using live transfected cells to human M23-AQP4 or full-length MOG...
October 2016: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/27988845/an-updated-histological-classification-system-for-multiple-sclerosis-lesions
#12
Tanja Kuhlmann, Samuel Ludwin, Alexandre Prat, Jack Antel, Wolfgang Brück, Hans Lassmann
Multiple sclerosis is a complex and heterogeneous, most likely autoimmune, demyelinating disease of the central nervous system (CNS). Although a number of histological classification systems for CNS lesions have been used by different groups in recent years, no uniform classification exists. In this paper, we propose a simple and unifying classification of MS lesions incorporating many elements of earlier histological systems that aims to provide guidelines for neuropathologists and researchers studying MS lesions to allow for better comparison of different studies performed with MS tissue, and to aid in understanding the pathogenesis of the disease...
January 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/27951522/brain-lesion-distribution-criteria-distinguish-ms-from-aqp4-antibody-nmosd-and-mog-antibody-disease
#13
Maciej Juryńczyk, George Tackley, Yazhuo Kong, Ruth Geraldes, Lucy Matthews, Mark Woodhall, Patrick Waters, Wilhelm Kuker, Matthew Craner, Andrew Weir, Gabriele C DeLuca, Stephane Kremer, Maria Isabel Leite, Angela Vincent, Anu Jacob, Jérôme de Sèze, Jacqueline Palace
IMPORTANCE: Neuromyelitis optica spectrum disorders (NMOSD) can present with very similar clinical features to multiple sclerosis (MS), but the international diagnostic imaging criteria for MS are not necessarily helpful in distinguishing these two diseases. OBJECTIVE: This multicentre study tested previously reported criteria of '(1) at least 1 lesion adjacent to the body of the lateral ventricle and in the inferior temporal lobe; or (2) the presence of a subcortical U-fibre lesion or (3) a Dawson's finger-type lesion' in an independent cohort of relapsing-remitting multiple sclerosis (RRMS) and AQP4-ab NMOSD patients and also assessed their value in myelin oligodendrocyte glycoprotein (MOG)-ab positive and ab-negative NMOSD...
February 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/27844165/myelin-oligodendrocyte-glycoprotein-mog-autoantibodies-as-potential-markers-of-severe-optic-neuritis-and-subclinical-retinal-axonal-degeneration
#14
Joachim Havla, T Kümpfel, R Schinner, M Spadaro, E Schuh, E Meinl, R Hohlfeld, O Outteryck
Antibodies against conformation-dependent epitopes of myelin-oligodendrocyte-glycoprotein (MOG-abs) are present in subgroups of neuromyelitis optica spectrum disorder (NMOSD), recurrent optic neuritis (rON), multiple sclerosis (MS), and anti-NMDAR encephalitis. Using optical coherence tomography (OCT) we assessed whether MOG-abs might serve as potential marker of retinal axonal degeneration. We investigated a clinically heterogeneous cohort of 13 MOG-abs-positive patients (4 MOG-abs-positive rON, 4 MOG-abs-positive adult MS, 3 MOG-abs-positive relapsing encephalomyelitis, 2 MOG-abs-positive aquaporin-4-abs-negative NMOSD)...
January 2017: Journal of Neurology
https://www.readbyqxmd.com/read/27844029/dose-dependent-inhibition-of-demyelination-and-microglia-activation-by-ivig
#15
Meike Winter, Christine Baksmeier, Julia Steckel, Sumanta Barman, Manish Malviya, Melanie Harrer-Kuster, Hans-Peter Hartung, Norbert Goebels
OBJECTIVE: Intravenous immunoglobulin (IVIG) is an established treatment for numerous autoimmune conditions. Clinical trials of IVIG for multiple sclerosis, using diverse dose regimens, yielded controversial results. The aim of this study is to dissect IVIG effector mechanisms on demyelination in an ex vivo model of the central nervous system (CNS)-immune interface. METHODS: Using organotypic cerebellar slice cultures (OSC) from transgenic mice expressing green fluorescent protein (GFP) in oligodendrocytes/myelin, we induced extensive immune-mediated demyelination and oligodendrocyte loss with an antibody specific for myelin oligodendrocyte glycoprotein (MOG) and complement...
November 2016: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/27802825/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-3-brainstem-involvement-frequency-presentation-and-outcome
#16
Sven Jarius, Ingo Kleiter, Klemens Ruprecht, Nasrin Asgari, Kalliopi Pitarokoili, Nadja Borisow, Martin W Hümmert, Corinna Trebst, Florence Pache, Alexander Winkelmann, Lena-Alexandra Beume, Marius Ringelstein, Oliver Stich, Orhan Aktas, Mirjam Korporal-Kuhnke, Alexander Schwarz, Carsten Lukas, Jürgen Haas, Kai Fechner, Mathias Buttmann, Judith Bellmann-Strobl, Hanna Zimmermann, Alexander U Brandt, Diego Franciotta, Kathrin Schanda, Friedemann Paul, Markus Reindl, Brigitte Wildemann
BACKGROUND: Myelin oligodendrocyte glycoprotein antibodies (MOG-IgG) are present in a subset of aquaporin-4 (AQP4)-IgG-negative patients with optic neuritis (ON) and/or myelitis. Little is known so far about brainstem involvement in MOG-IgG-positive patients. OBJECTIVE: To investigate the frequency, clinical and paraclinical features, course, outcome, and prognostic implications of brainstem involvement in MOG-IgG-positive ON and/or myelitis. METHODS: Retrospective case study...
November 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27802824/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-4-afferent-visual-system-damage-after-optic-neuritis-in-mog-igg-seropositive-versus-aqp4-igg-seropositive-patients
#17
Florence Pache, Hanna Zimmermann, Janine Mikolajczak, Sophie Schumacher, Anna Lacheta, Frederike C Oertel, Judith Bellmann-Strobl, Sven Jarius, Brigitte Wildemann, Markus Reindl, Amy Waldman, Kerstin Soelberg, Nasrin Asgari, Marius Ringelstein, Orhan Aktas, Nikolai Gross, Mathias Buttmann, Thomas Ach, Klemens Ruprecht, Friedemann Paul, Alexander U Brandt
BACKGROUND: Antibodies against myelin oligodendrocyte glycoprotein (MOG-IgG) have been reported in patients with aquaporin-4 antibody (AQP4-IgG)-negative neuromyelitis optica spectrum disorders (NMOSD). The objective of this study was to describe optic neuritis (ON)-induced neuro-axonal damage in the retina of MOG-IgG-positive patients in comparison with AQP4-IgG-positive NMOSD patients. METHODS: Afferent visual system damage following ON was bilaterally assessed in 16 MOG-IgG-positive patients with a history of ON and compared with that in 16 AQP4-IgG-positive NMOSD patients...
November 1, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27793206/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-2-epidemiology-clinical-presentation-radiological-and-laboratory-features-treatment-responses-and-long-term-outcome
#18
Sven Jarius, Klemens Ruprecht, Ingo Kleiter, Nadja Borisow, Nasrin Asgari, Kalliopi Pitarokoili, Florence Pache, Oliver Stich, Lena-Alexandra Beume, Martin W Hümmert, Marius Ringelstein, Corinna Trebst, Alexander Winkelmann, Alexander Schwarz, Mathias Buttmann, Hanna Zimmermann, Joseph Kuchling, Diego Franciotta, Marco Capobianco, Eberhard Siebert, Carsten Lukas, Mirjam Korporal-Kuhnke, Jürgen Haas, Kai Fechner, Alexander U Brandt, Kathrin Schanda, Orhan Aktas, Friedemann Paul, Markus Reindl, Brigitte Wildemann
BACKGROUND: A subset of patients with neuromyelitis optica spectrum disorders (NMOSD) has been shown to be seropositive for myelin oligodendrocyte glycoprotein antibodies (MOG-IgG). OBJECTIVE: To describe the epidemiological, clinical, radiological, cerebrospinal fluid (CSF), and electrophysiological features of a large cohort of MOG-IgG-positive patients with optic neuritis (ON) and/or myelitis (n = 50) as well as attack and long-term treatment outcomes. METHODS: Retrospective multicenter study...
September 27, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27788675/mog-igg-in-nmo-and-related-disorders-a-multicenter-study-of-50-patients-part-1-frequency-syndrome-specificity-influence-of-disease-activity-long-term-course-association-with-aqp4-igg-and-origin
#19
Sven Jarius, Klemens Ruprecht, Ingo Kleiter, Nadja Borisow, Nasrin Asgari, Kalliopi Pitarokoili, Florence Pache, Oliver Stich, Lena-Alexandra Beume, Martin W Hümmert, Corinna Trebst, Marius Ringelstein, Orhan Aktas, Alexander Winkelmann, Mathias Buttmann, Alexander Schwarz, Hanna Zimmermann, Alexander U Brandt, Diego Franciotta, Marco Capobianco, Joseph Kuchling, Jürgen Haas, Mirjam Korporal-Kuhnke, Soeren Thue Lillevang, Kai Fechner, Kathrin Schanda, Friedemann Paul, Brigitte Wildemann, Markus Reindl
BACKGROUND: Antibodies to myelin oligodendrocyte glycoprotein (MOG-IgG) have been suggested to play a role in a subset of patients with neuromyelitis optica and related disorders. OBJECTIVE: To assess (i) the frequency of MOG-IgG in a large and predominantly Caucasian cohort of patients with optic neuritis (ON) and/or myelitis; (ii) the frequency of MOG-IgG among AQP4-IgG-positive patients and vice versa; (iii) the origin and frequency of MOG-IgG in the cerebrospinal fluid (CSF); (iv) the presence of MOG-IgG at disease onset; and (v) the influence of disease activity and treatment status on MOG-IgG titers...
September 26, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27734026/il-3-promotes-the-development-of-experimental-autoimmune-encephalitis
#20
Kerstin Renner, Sonja Hellerbrand, Fabian Hermann, Christine Riedhammer, Yvonne Talke, Gabriela Schiechl, Manuel Rodriguez Gomez, Simone Kutzi, Dagmar Halbritter, Nicole Goebel, Hilke Brühl, Robert Weissert, Matthias Mack
Little is known about the role of IL-3 in multiple sclerosis (MS) in humans and in experimental autoimmune encephalomyelitis (EAE). Using myelin oligodendrocyte glycoprotein (MOG) peptide-induced EAE, we show that CD4(+) T cells are the main source of IL-3 and that cerebral IL-3 expression correlates with the influx of T cells into the brain. Blockade of IL-3 with monoclonal antibodies, analysis of IL-3 deficient mice, and adoptive transfer of leukocytes demonstrate that IL-3 plays an important role for development of clinical symptoms of EAE, for migration of leukocytes into the brain, and for cerebral expression of adhesion molecules and chemokines...
October 6, 2016: JCI Insight
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