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Myelin oligodendrocyte antibodies

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https://www.readbyqxmd.com/read/28533781/myelin-oligodendrocyte-glycoprotein-deciphering-a-target-in-inflammatory-demyelinating-diseases
#1
REVIEW
Patrick Peschl, Monika Bradl, Romana Höftberger, Thomas Berger, Markus Reindl
Myelin oligodendrocyte glycoprotein (MOG), a member of the immunoglobulin (Ig) superfamily, is a myelin protein solely expressed at the outermost surface of myelin sheaths and oligodendrocyte membranes. This makes MOG a potential target of cellular and humoral immune responses in inflammatory demyelinating diseases. Due to its late postnatal developmental expression, MOG is an important marker for oligodendrocyte maturation. Discovered about 30 years ago, it is one of the best-studied autoantigens for experimental autoimmune models for multiple sclerosis (MS)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28507511/distribution-of-elovl4-in-the-developing-and-adult-mouse-brain
#2
David M Sherry, Blake R Hopiavuori, Megan A Stiles, Negar S Rahman, Kathryn G Ozan, Ferenc Deak, Martin-Paul Agbaga, Robert E Anderson
ELOngation of Very Long chain fatty acids (ELOVL)-4 is essential for the synthesis of very long chain-fatty acids (fatty acids with chain lengths ≥ 28 carbons). The functions of ELOVL4 and its very long-chain fatty acid products are poorly understood at present. However, mutations in ELOVL4 cause neurodevelopmental or neurodegenerative diseases that vary according to the mutation and inheritance pattern. Heterozygous inheritance of different ELOVL4 mutations causes Stargardt-like Macular Dystrophy or Spinocerebellar Ataxia type 34...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28477397/etiologies-of-acute-demyelinating-optic-neuritis-an-observational-study-of-110-patients
#3
R Deschamps, A Lecler, C Lamirel, J Aboab, A Gueguen, C Bensa, C Vignal, O Gout
BACKGROUND AND PURPOSE: New criteria for the diagnosis of multiple sclerosis (MS) and discovery of myelin oligodendrocyte glycoprotein (MOG) or aquaporin-4 (AQP4) antibodies (Abs) have changed the management of optic neuritis (ON). Our aim was to specify, in view of these recent advances, the etiologies of acute demyelinating ON for consecutive patients. METHODS: Retrospective database analysis was undertaken of consecutive adult patients with acute ON admitted from 1 December 2014 to 31 January 2016...
June 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28476644/autoantibody-mediated-diseases-of-the-cns-structure-dysfunction-and-therapy
#4
REVIEW
James Varley, Jennifer Taylor, Sarosh R Irani
The field of neuronal autoantibody associated diseases of the central nervous system has expanded dramatically in the last few years. The range of identified neuronal and glial antibody targets has led to the accurate classification of a number of syndromes which each associate with characteristic clinical features. These diseases are especially important due to their frequent response to immunotherapies. Antibodies against the N-methyl, d-aspartate receptor (NMDAR) and leucine-rich glioma inactivated 1 (LGI1) are the commonest autoantibodies known in patients with autoimmune forms of encephalitis...
May 3, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28471902/recurrent-optic-neuritis-associated-with-mog-antibody-seropositivity
#5
Thashi Chang, Patrick Waters, Mark Woodhall, Angela Vincent
INTRODUCTION: Optic neuritis (ON) can be the first manifestation of autoimmune central nervous system diseases such as multiple sclerosis and neuromyelitis optica, but it can also occur as an isolated monophasic or relapsing disease. A proportion of these patients have antibodies against myelin oligodendrocyte glycoprotein (MOG). We report a case of recurrent ON with MOG antibodies in a South Asian patient. CASE REPORT: A 50-year-old Sri Lankan female with a previous history of 2 episodes of steroid-responsive ON presented with a 20/120 visual impairment of her right eye...
May 2017: Neurologist
https://www.readbyqxmd.com/read/28461116/anti-neuronal-anti-bodies-in-patients-with-early-psychosis
#6
O Mantere, M Saarela, T Kieseppä, T Raij, T Mäntylä, M Lindgren, E Rikandi, W Stoecker, B Teegen, J Suvisaari
It may be challenging to distinguish autoimmune encephalitis associated with anti-neuronal autoantibodies from primary psychiatric disorders. Here, serum was drawn from patients with a first-episode psychosis (n=70) or a clinical high-risk for psychosis (n=6) and controls (n=34). We investigated the serum prevalence of 24 anti-neuronal autoantibodies: IgG antibodies for anti-N-methyl-d-aspartate-type glutamate receptor (anti-NMDAR), glutamate and γ-aminobutyric acid alpha and beta receptors (GABA-a, GABA-b), alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPA), glycine receptor (GlyR), metabotropic glutamate receptor 1 and 5 (mGluR1, mGluR5), anti-Tr/Delta/notch-like epidermal growth factor-related receptor (DNER), contactin-associated protein-like 2 (CASPR2), myelin oligodendrocyte glycoprotein (MOG), glutamic acid decarboxylase-65 (GAD65), collapsin response mediator protein 5/crossveinless-2 (CV2), aquaporin-4 (AQP4), anti-dipeptidyl-peptidase-like protein-6 (DPPX), type 1 anti-neuronal nuclear antibody (ANNA-1, Hu), Ri, Yo, IgLON5, Ma2, zinc finger protein 4 (ZIC4), Rho GTPase-activating protein 26, amphiphysin, and recoverin, as well as IgA and IgM for dopamine-2-receptor (DRD2)...
April 28, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28457906/widespread-cortical-demyelination-of-both-hemispheres-can-be-induced-by-injection-of-pro-inflammatory-cytokines-via-an-implanted-catheter-in-the-cortex-of-mog-immunized-rats
#7
Muammer Üçal, Michaela Tanja Haindl, Milena Z Adzemovic, Johannes Strasser, Lisa Theisl, Manuel Zeitelhofer, Klaus Kraitsy, Stefan Ropele, Ute Schäfer, Franz Fazekas, Sonja Hochmeister
Cortical demyelination is a common finding in patients with chronic multiple sclerosis (MS) and contributes to disease progression and overall disability. The exact pathomechanism that leads to cortical lesions is not clear. Research is limited by the fact that standard animal models of multiple sclerosis do not commonly affect the cortex, or if they do in some variants, the cortical demyelination is rather sparse and already remyelinated within a few days. In an attempt to overcome these limitations we implanted a tissue-compatible catheter into the cortex of Dark Agouti rats...
April 27, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28429225/design-of-chemical-conjugate-for-targeted-therapy-of-multiple-sclerosis-based-of-constant-fragment-of-human-antibody-heavy-chain-and-peptoid-analog-of-autoantigen-mog35-55
#8
Y A Lomakin, A V Stepanov, D S Balabashin, N A Ponomarenko, I V Smirnov, A A Belogurov
Elimination of B cells producing autoantibodies to neuroantigens is considered as beneficial in the treatment of multiple sclerosis. Myelin oligodendrocyte glycoprotein (MOG) is a significant autoantigen in multiple sclerosis. It was shown that MOG-like peptoid AMogP3 can bind autoantibodies produced by pathological lymphocytes. We propose a structure of an innovative drug for targeted elimination of the pool of autoreactive B cells responsible for multiple sclerosis pathogenesis; this compound is a complex of peptoid AMogP3 with Fc fragment of human immunoglobulin...
April 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28420330/anti-mog-antibody-positive-adem-following-infectious-mononucleosis-due-to-a-primary-ebv-infection-a-case-report
#9
Yoshitsugu Nakamura, Hideto Nakajima, Hiroki Tani, Takafumi Hosokawa, Shimon Ishida, Fumiharu Kimura, Kimihiko Kaneko, Toshiyuki Takahashi, Ichiro Nakashima
BACKGROUND: Anti-Myelin oligodendrocyte glycoprotein (MOG) antibodies are detected in various demyelinating diseases, such as pediatric acute disseminated encephalomyelitis (ADEM), recurrent optic neuritis, and aquaporin-4 antibody-seronegative neuromyelitis optica spectrum disorder. We present a patient who developed anti-MOG antibody-positive ADEM following infectious mononucleosis (IM) due to Epstein-Barr virus (EBV) infection. CASE PRESENTATION: A 36-year-old healthy man developed paresthesia of bilateral lower extremities and urinary retention 8 days after the onset of IM due to primary EBV infection...
April 19, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28397727/neutralization-of-interleukin-9-decreasing-mast-cells-infiltration-in-experimental-autoimmune-encephalomyelitis
#10
Jun-Jie Yin, Xue-Qiang Hu, Zhi-Feng Mao, Jian Bao, Wei Qiu, Zheng-Qi Lu, Hao-Tian Wu, Xiao-Nan Zhong
BACKGROUND: Th9 cells are a newly discovered CD4+ T helper cell subtype, characterized by high interleukin (IL)-9 secretion. Growing evidences suggest that Th9 cells are involved in the pathogenic mechanism of multiple sclerosis (MS). Mast cells are multifunctional innate immune cells, which are perhaps best known for their role as dominant effector cells in allergies and asthma. Several lines of evidence point to an important role for mast cells in MS and its animal models. Simultaneously, there is dynamic "cross-talk" between Th9 and mast cells...
April 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28391784/neuromyelitis-optica-spectrum-disorders
#11
REVIEW
Tetsuya Akaishi, Ichiro Nakashima, Douglas Kazutoshi Sato, Toshiyuki Takahashi, Kazuo Fujihara
Neuromyelitis optica (NMO) is clinically characterized by severe optic neuritis and transverse myelitis, but recent studies with anti-aquaporin-4-antibody specific to NMO have revealed that the clinical spectrum is wider than previously thought. International consensus diagnostic criteria propose NMO spectrum disorders (NMOSD) as the term to define the entire spectrum including typical NMO, optic neuritis, acute myelitis, brain syndrome, and their combinations. NMOSD is now divided into anti-aquaporin-4-antibody-seropositive NMOSD and -seronegative NMOSD (or unknown serostatus)...
May 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/28386258/role-of-anti-osteopontin-antibodies-in-multiple-sclerosis-and-experimental-autoimmune-encephalomyelitis
#12
Nausicaa Clemente, Cristoforo Comi, Davide Raineri, Giuseppe Cappellano, Domizia Vecchio, Elisabetta Orilieri, Casimiro L Gigliotti, Elena Boggio, Chiara Dianzani, Melissa Sorosina, Filippo Martinelli-Boneschi, Marzia Caldano, Antonio Bertolotto, Luca Ambrogio, Daniele Sblattero, Tiziana Cena, Maurizio Leone, Umberto Dianzani, Annalisa Chiocchetti
Osteopontin (OPN) is highly expressed in demyelinating lesions in multiple sclerosis (MS) and experimental autoimmune encephalomyelitis (EAE). OPN is cleaved by thrombin into N- (OPN-N) and C-terminal (OPN-C) fragments with different ligands and functions. In EAE, administering recombinant OPN induces relapses, whereas treatment with anti-OPN antibodies ameliorates the disease. Anti-OPN autoantibodies (autoAbs) are spontaneously produced during EAE but have never been detected in MS. The aim of the study was to evaluate anti-OPN autoAbs in the serum of MS patients, correlate them with disease course, and recapitulate the human findings in EAE...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28379073/anti-myelin-oligodendrocyte-glycoprotein-antibodies-magnetic-resonance-imaging-findings-in-a-case-series-and-a-literature-review
#13
Cellina Michaela, Fetoni Vincenza, Ciocca Matteo, Pirovano Marta, Oliva Giancarlo
Myelin oligodendrocyte glycoprotein is a protein exclusively expressed on the surface of oligodendrocytes and myelin in the central nervous system. Antibodies against myelin oligodendrocyte glycoprotein were initially detected in children with demyelinating syndromes, and more recently reported in a broad spectrum of central nervous system demyelinating diseases in adults, including neuromyelitis optica spectrum disorders and bilateral optic neuritis. Patients with myelin oligodendrocyte glycoprotein antibody-associated demyelination appear to have unique clinical and radiological features...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28340598/myelin-specific-multiple-sclerosis-antibodies-cause-complement-dependent-oligodendrocyte-loss-and-demyelination
#14
Yiting Liu, Katherine S Given, Danielle E Harlow, Adeline M Matschulat, Wendy B Macklin, Jeffrey L Bennett, Gregory P Owens
Intrathecal immunoglobulin G (IgG) synthesis, cerebrospinal fluid (CSF) oligoclonal IgG bands and lesional IgG deposition are seminal features of multiple sclerosis (MS) disease pathology. Both the specific targets and pathogenic effects of MS antibodies remain poorly characterized. We produced IgG1 monoclonal recombinant antibodies (rAbs) from clonally-expanded plasmablasts recovered from MS patient CSF. Among these were a subset of myelin-specific MS rAbs. We examined their immunoreactivity to mouse organotypic cerebellar slices by live binding and evaluated tissue injury in the presence and absence of human complement...
March 24, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28327523/methodological-challenges-in-protein-microarray-and-immunohistochemistry-for-the-discovery-of-novel-autoantibodies-in-paediatric-acute-disseminated-encephalomyelitis
#15
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
#16
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/28326060/microbial-neuraminidase-induces-a-moderate-and-transient-myelin-vacuolation-independent-of-complement-system-activation
#17
Pablo Granados-Durán, María Dolores López-Ávalos, Manuel Cifuentes, Margarita Pérez-Martín, María Del Mar Fernández-Arjona, Timothy R Hughes, Krista Johnson, B Paul Morgan, Pedro Fernández-Llebrez, Jesús M Grondona
AIMS: Some central nervous system pathogens express neuraminidase (NA) on their surfaces. In the rat brain, a single intracerebroventricular (ICV) injection of NA induces myelin vacuolation in axonal tracts. Here, we explore the nature, the time course, and the role of the complement system in this damage. METHODS: The spatiotemporal analysis of myelin vacuolation was performed by optical and electron microscopy. Myelin basic protein-positive area and oligodendrocyte transcription factor (Olig2)-positive cells were quantified in the damaged bundles...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28306572/neuromyelitis-optica-and-neuromyelitis-optica-spectrum-disorders
#18
Romain Marignier, Alvaro Cobo Calvo, Sandra Vukusic
PURPOSE OF REVIEW: The discovery of highly specific auto-antibodies directed against the water channel aquaporin 4 was a quantum leap in the definition, classification and management of neuromyelitis optica (NMO). Herein, we propose an update on epidemiological, clinical and therapeutic advances in the field, underlining unmet needs. RECENT FINDINGS: Large-scale epidemiological studies have recently provided a more precise evaluation of NMO prevalence and a better stratification regarding ethnicity and sex...
June 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28302134/microrna-142-regulates-inflammation-and-t-cell-differentiation-in-an-animal-model-of-multiple-sclerosis
#19
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/28248700/myelin-oligodendrocyte-glycoprotein-antibodies-how-clinically-useful-are-they
#20
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...
June 2017: Current Opinion in Neurology
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