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Encephalomyelitis

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https://www.readbyqxmd.com/read/28642092/chemokine-ccl17-is-expressed-by-dendritic-cells-in-the-cns-during-experimental-autoimmune-encephalomyelitis-and-promotes-pathogenesis-of-disease
#1
Christina Ruland, Hannes Renken, Ivan Kuzmanov, Arezoo Fattahi Mehr, Kathrin Schwarte, Manuela Cerina, Alexander Herrmann, David-Marian Otte, Andreas Zimmer, Nicholas Schwab, Sven G Meuth, Volker Arolt, Luisa Klotz, Irmgard Förster, Stefanie Scheu, Judith Alferink
The CC chemokine ligand 17 (CCL17) and its cognate CC chemokine receptor 4 (CCR4) are known to control leukocyte migration, maintenance of TH17 cells, and regulatory T cell (Treg) expansion in vivo. In this study we characterized the expression and functional role of CCL17 in the pathogenesis of experimental autoimmune encephalomyelitis (EAE). Using a CCL17/EGFP reporter mouse model, we could show that CCL17 expression in the CNS can be found in a subset of classical dendritic cells (DCs) that immigrate into the CNS during the effector phase of MOG-induced EAE...
June 19, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28642030/cyclic-mog35-55-ameliorates-clinical-and-neuropathological-features-of-experimental-autoimmune-encephalomyelitis
#2
Athanasios Lourbopoulos, George Deraos, Minos-Timotheos Matsoukas, Olga Touloumi, Aggeliki Giannakopoulou, Hubert Kalbacher, Nikolaos Grigoriadis, Vasso Apostolopoulos, John Matsoukas
EAE is induced to susceptible mice using linear peptides of myelin proteins of the central nervous system. Specific peptide motifs within the peptide-binding groove of the MHC peptide-complex determines the affinity of the peptide in each animal and the consequent T-cell receptor recognition and activation of the cell. Altered peptide ligand (APL) vaccination is a novel approach based on an effort to induce T-cell tolerance or alter cytokine profile from pro-inflammatory to anti-inflammatory. In the present study we synthesized the MOG35-55 peptide and altered its 3-dimensional conformation to make it a cyclic one (c-MOG35-55)...
June 7, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28641926/targeting-the-gm-csf-receptor-for-the-treatment-of-cns-autoimmunity
#3
Igal Ifergan, Todd S Davidson, Hania Kebir, Dan Xu, Daphne Palacios-Macapagal, Jennifer Cann, Jane M Rodgers, Zoe N Hunter, Camille L Pittet, Sara Beddow, Clare A Jones, Alexandre Prat, Matthew A Sleeman, Stephen D Miller
In multiple sclerosis (MS), there is a growing interest in inhibiting the pro-inflammatory effects of granulocyte-macrophage colony-stimulating factor (GM-CSF). We sought to evaluate the therapeutic potential and underlying mechanisms of GM-CSF receptor alpha (Rα) blockade in animal models of MS. We show that GM-CSF signaling inhibition at peak of chronic experimental autoimmune encephalomyelitis (EAE) results in amelioration of disease progression. Similarly, GM-CSF Rα blockade in relapsing-remitting (RR)-EAE model prevented disease relapses and inhibited T cell responses specific for both the inducing and spread myelin peptides, while reducing activation of mDCs and inflammatory monocytes...
June 19, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28638708/citation-classics-in-central-nervous-system-inflammatory-demyelinating-disease
#4
Jee-Eun Kim, Kang M Park, Yerim Kim, Dae Y Yoon, Jong S Bae
OBJECTIVES: To identify and analyze the characteristics of the most influential articles about central nervous system (CNS) inflammatory demyelinating disease. MATERIALS AND METHODS: The Institute for Scientific Information (ISI) Web of Science database and the 2014 Journal Citation Reports Science Edition were used to retrieve the top 100 cited articles on CNS inflammatory demyelinating disease. The citation numbers, journals, years of publication, authorships, article types, subjects and main issues were analyzed...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28638259/global-alert-zika-virus-an-emerging-arbovirus
#5
REVIEW
Zulal Ozkurt, Esra Cinar Tanriverdi
Zika virus (ZIKV) is an arbovirus of the Flavivirus genus, and it has an envelope and a single RNA molecule. In early 2016, the World Health Organization declared ZIKV infection to be an emerging global health threat. The major transmission route of the virus to humans is Aedes mosquitoes. ZIKV can be transmitted between humans by transplacental, perinatal, and sexual routes and via blood and body fluids. ZIKV infection usually results in a mild and self-limiting disease with low-grade fever, conjunctivitis, and periorbital edema...
June 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28637379/neuropsychological-outcomes-of-pediatric-demyelinating-diseases-a-review
#6
Alexander Tan, Cole Hague, Benjamin M Greenberg, Lana Harder
Immune-mediated central nervous system (CNS) demyelinating diseases impact various areas of the brain, optic nerves, and/or spinal cord and can result in a wide range of neurologic symptoms including adverse cognitive outcomes. Neuropsychological outcomes in adult multiple sclerosis (MS) are well documented, while literature on such outcomes in pediatric cohorts is more limited. Furthermore, literature on neuropsychological outcomes in pediatric acute disseminated encephalomyelitis (ADEM), neuromyelitis optica (NMO), and transverse myelitis (TM) is even more limited...
June 21, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28634006/testosterone-differentially-affects-t-cells-and-neurons-in-murine-and-human-models-of-neuroinflammation-and-neurodegeneration
#7
Megan G Massa, Christina David, Stefanie Jörg, Johannes Berg, Barbara Gisevius, Sarah Hirschberg, Ralf A Linker, Ralf Gold, Aiden Haghikia
The high female-to-male sex ratio of multiple sclerosis (MS) prevalence has continuously confounded researchers, especially in light of male patients' accelerated disease course at later stages of MS. Although multiple studies have concentrated on estrogenic mechanisms of disease modulation, fairly little attention has been paid to androgenic effects in a female system, and even fewer studies have attempted to dissociate hormonal effects on the neurodegenerative and neuroinflammatory processes of MS. Herein, we demonstrate the differential effects of hormone treatment on the acute inflammatory and chronic neurodegenerative phases of murine experimental autoimmune encephalomyelitis...
July 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28633629/prevalence-of-and-risk-factors-for-severe-cognitive-and-sleep-symptoms-in-me-cfs-and-ms
#8
Vageesh Jain, Amit Arunkumar, Caroline Kingdon, Eliana Lacerda, Luis Nacul
BACKGROUND: There are considerable phenotypic and neuroimmune overlaps between myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and multiple sclerosis (MS). While the precise aetiologies of both MS and ME/CFS are unclear, evidence suggests that deterioration in cognitive function is widely prevalent in patients with either condition. Little is known about differing risk factors or exposures, which may lead to severe cognitive or sleep symptoms. This study aims to gauge the extent of cognitive and sleep symptoms in ME/CFS and MS patients participating in the UK ME/CFS Biobank and identify the characteristics of those experiencing severe symptoms...
June 20, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28629631/probenecid-treatment-reduces-demyelination-induced-by-cuprizone-feeding
#9
Nadine Hainz, Philipp Becker, Daniel Rapp, Stefan Wagenpfeil, Bodo Wonnenberg, Christoph Beisswenger, Thomas Tschernig, Carola Meier
Recent experiments showed that a pannexin-1 inhibitor, probenecid, reduced clinical symptoms in the murine experimental autoimmune encephalomyelitis when applied during the initial phase of neuronal inflammation. An inflammatory component is also present in a toxically induced inflammation and demyelination using cuprizone diet. Probenecid is a pannexin-1 antagonist and a probenecid therapy was investigated. Mice were fed for 10days with a cuprizone diet. In the following, the diet was continued but combined with a daily injection of a low dose of probenecid or solvent for 10days...
June 16, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28628449/porcine-hemagglutinating-encephalomyelitis-virus-and-respiratory-disease-in-exhibition-swine-michigan-usa-2015
#10
Joshua N Lorbach, Leyi Wang, Jacqueline M Nolting, Madonna G Benjamin, Mary Lea Killian, Yan Zhang, Andrew S Bowman
Acute outbreaks of respiratory disease in swine at agricultural fairs in Michigan, USA, in 2015 raised concern for potential human exposure to influenza A virus. Testing ruled out influenza A virus and identified porcine hemagglutinating encephalomyelitis virus as the cause of influenza-like illness in the affected swine.
July 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28627433/comparison-of-g-protein-sequences-of-south-african-street-rabies-viruses-showing-distinct-progression-of-the-disease-in-a-mouse-model-of-experimental-rabies
#11
Wonhyo Seo, Alexandre Servat, Florence Cliquet, Jenkins Akinbowale, Christophe Prehaud, Monique Lafon, Claude Sabeta
Rabies is a fatal zoonotic disease and infections generally lead to a fatal encephalomyelitis in both humans and animals. In South Africa, domestic (dogs) and the wildlife (yellow mongoose) host species maintain the canid and mongoose rabies variants respectively. In this study, pathogenicity differences of South African canid and mongoose rabies viruses were investigated in a murine model, by assessing the progression of clinical signs and survivorship. Comparison of glycoprotein gene sequences revealed amino acid differences that may underpin the observed pathogenicity differences...
June 13, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/28625726/pulmonary-administration-of-soluble-antigen-arrays-is-superior-to-antigen-in-treatment-of-experimental-autoimmune-encephalomyelitis
#12
Christopher Kuehl, Sharadvi Thati, Bradley Sullivan, Joshua Sestak, Michael Thompson, Teruna Siahaan, Cory Berkland
Antigen-specific immunotherapy (ASIT) has been used to hyposensitize patients to allergens and offers an enticing approach for attenuating autoimmune diseases. Applying ASIT to mucosal surfaces such as the lungs may engage unique immune response pathways to improve efficacy. Pulmonary delivery of soluble antigen arrays (SAgAs) was explored in mice with experimental autoimmune encephalomyelitis (EAE), a multiple sclerosis model. SAgAs were designed to impede immune response to autoantigen epitopes and are composed of a hyaluronan backbone with peptides PLP139-151 and LABL, a disease-causing proteolipid peptide epitope and an ICAM-1 ligand, respectively...
June 15, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28625589/acute-disseminated-encephalomyelitis-in-dengue-viral-infection
#13
REVIEW
Wan Aliaa Wan Sulaiman, Liyana Najwa Inche Mat, Hasnur Zaman Hashim, Fan Kee Hoo, Siew Mooi Ching, Ramachandran Vasudevan, Mohd Hazmi Mohamed, Hamidon Basri
Dengue is the most common arboviral disease affecting many countries worldwide. An RNA virus from the flaviviridae family, dengue has four antigenically distinct serotypes (DEN-1-DEN-4). Neurological involvement in dengue can be classified into dengue encephalopathy immune-mediated syndromes, encephalitis, neuromuscular or dengue muscle dysfunction and neuro-ophthalmic involvement. Acute disseminated encephalomyelitis (ADEM) is an immune mediated acute demyelinating disorder of the central nervous system following recent infection or vaccination...
June 15, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28621170/therapeutic-efficacy-of-multipotent-adult-progenitor-cells-versus-mesenchymal-stem-cells-in-experimental-autoimmune-encephalomyelitis
#14
Saurabh Pratap Singh, Sachin Hanumantrao Jadhav, Chandra Prakash Chaturvedi, Soniya Nityanand
AIM: In this study, we have evaluated the therapeutic efficacy of mouse multipotent adult progenitor cells (mMAPCs) in experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis, and compared it with mouse mesenchymal stem cells (mMSCs). MATERIALS & METHODS: We administered PKH26-labeled mMAPC and mMSC into EAE mice and evaluated their therapeutic efficacy. RESULTS: The mMAPC-treated mice in comparison with the mMSC group exhibited a higher suppression of EAE (p < 0...
June 16, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28619643/superior-transfection-efficiency-of-phagocytic-astrocytes-by-large-chitosan-dna-nanoparticles
#15
Fanqiang Kong, Guoping Liu, Shumin Zhou, Jie Guo, Song Chen, Zhiyun Wang
PURPOSE: Mechanism study of why astrocytes isolated from experimental autoimmune encephalomyelitis (EAE)-induced B6 mice or after being exposed to inflammatory factors had the highest transfection efficiency to larger-sized, but not compacted, pspCS/pDNA particles. METHODS: Phosphorylatable short peptide conjugated chitosan (pspCS) was compounded with plasmid DNA (pDNA) at different N:P ratios to form pspCS/pDNA particles of different size and zeta potentials. These pspCS/pDNA particles were used for the transfection of astrocytes isolated from either EAE induced or healthy B6 mice...
June 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28619431/depletion-of-cd20-b-cells-fails-to-inhibit-relapsing-mouse-experimental-autoimmune-encephalomyelitis
#16
Eseberuo Sefia, Gareth Pryce, Ute-Christiane Meier, Gavin Giovannoni, David Baker
BACKGROUND: Multiple sclerosis (MS) is often considered to be a CD4, T cell-mediated disease. This is largely based on the capacity of CD4 T cells to induce relapsing experimental autoimmune encephalomyelitis (EAE) in rodents. However, CD4-depletion using a monoclonal antibody was considered unsuccessful and relapsing MS responds well to B cell depletion via CD20 B cell depleting antibodies. The influence of CD20 B cell depletion in relapsing EAE was assessed. METHODS: Relapsing EAE was induced in Biozzi ABH mice...
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28618115/iron-sulfur-glutaredoxin-2-protects-oligodendrocytes-against-damage-induced-by-nitric-oxide-release-from-activated-microglia
#17
Klaudia Lepka, Katrin Volbracht, Eckhard Bill, Reiner Schneider, Natalia Rios, Thomas Hildebrandt, Jens Ingwersen, Timur Prozorovski, Christopher Horst Lillig, Jack van Horssen, Lawrence Steinman, Hans-Peter Hartung, Rafael Radi, Arne Holmgren, Orhan Aktas, Carsten Berndt
Demyelinated brain lesions, a hallmark of autoimmune neuroinflammatory diseases like multiple sclerosis, result from oligodendroglial cell damage. Activated microglia are considered a major source of nitric oxide and subsequent peroxynitrite-mediated damage of myelin. Here, we provide biochemical and biophysical evidence that the oxidoreductase glutaredoxin 2 inhibits peroxynitrite formation by transforming nitric oxide into dinitrosyl-diglutathionyl-iron-complexes. Glutaredoxin 2 levels influence both survival rates of primary oligodendrocyte progenitor cells and preservation of myelin structure in cerebellar organotypic slice cultures challenged with activated microglia or nitric oxide donors...
June 15, 2017: Glia
https://www.readbyqxmd.com/read/28617989/1-25-dihydroxyvitamin-d3-induced-dendritic-cells-suppress-experimental-autoimmune-encephalomyelitis-by-increasing-proportions-of-the-regulatory-lymphocytes-and-reducing-th1-th17-cells
#18
Zhongxiang Xie, Jingtao Chen, Chao Zheng, Jing Wu, Yun Cheng, Shan Zhu, Chenhong Lin, Qingqing Cao, Jie Zhu, Tao Jin
Dendritic cells (DCs), a bridge of innate and adaptive immune responses, play a key role in the development of multiple sclerosis (MS) and experimental autoimmune encephalomyelitis (EAE), an animal model for MS. Administration of tolerogenic DCs has been used as an immunotherapy in the autoimmune diseases. Deficiency of vitamin D is an environmental risk factor of MS. In this study, we induced tolerogenic DCs by 1,25-dihydroxyvitamin D3 (1,25(OH)2 D3 ) and adoptive transferred the tolerogenic DCs (VD3-DCs) into EAE mice...
June 15, 2017: Immunology
https://www.readbyqxmd.com/read/28617951/altered-expression-of-igf-i-system-in-neurons-of-the-inflamed-spinal-cord-during-acute-experimental-autoimmune-encephalomyelitis
#19
Azita Parvaneh Tafreshi, Farideh Talebi, Samira Ghorbani, Claude Bernard, Farshid Noorbakhsh
BACKGROUND: There is growing evidence that the impaired IGF-I system contributes to neurodegeneration. OBJECTIVES: In this study, we examined the spinal cords of the EAE, the animal model of multiple sclerosis, to see if the expression of the IGF-I system is altered. METHODS: To induce EAE, C57/BL6 mice were immunized with the Hooke lab MOG kit, sacrificed at the peak of the disease and their spinal cords were examined for the immunoreactivities (ir) of the IGF-I, IGF binding protein-1 (IGFBP-1) and glycogen synthase kinase 3β (GSK3β), as one major downstream molecule in the IGF-I signaling...
June 15, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28617362/-marburg-s-variant-of-multiple-sclerosis-a-case-report
#20
A S Kotov, K V Firsov, M S Bunak
Marburg's variant of multiple sclerosis, first described by the Austrian neurologist Otto Marburg in 1906, is a rare demyelinating disease that usually leads to severe disability or death within weeks to months. Our case report describes a young 24-year old woman with Marburg's variant of multiple sclerosis who became totally disabled over a period of some months. Clinical features and MRI-characteristics of two demyelinating diseases: acute disseminated encephalomyelitis (ADEM) and Marburg's variant of multiple sclerosis are discussed...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
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