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experimental autoimmune encephalomyelitis

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https://www.readbyqxmd.com/read/28939414/role-of-the-epigenetic-factor-sirt7-in-neuroinflammation-and-neurogenesis
#1
Nicolas Burg, Stefan Bittner, Erik Ellwardt
Epigenetic regulators are increasingly recognized as relevant modulators in the immune and nervous system. The class of sirtuins consists of NAD(+)-dependent histone deacetylases that regulate transcription. Sirtuin family member Sirt1 has already been shown to influence the disease course in an animal model of autoimmune neuroinflammation (experimental autoimmune encephalomyelitis (EAE)). A role of Sirt7, a related epigenetic regulator, on immune system regulation has been proposed before, as these mice are more susceptible to develop inflammatory cardiomyopathy...
September 19, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28939293/dose-dependent-s-allyl-cysteine-ameliorates-multiple-sclerosis-disease-related-pathology-by-reducing-oxidative-stress-and-biomerkers-of-dysbiosis-in-experimental-autoimmune-encephalomyelitis
#2
B M Escribano, E Luque, M Aguilar-Luque, M Feijóo, J Caballero-Villarraso, L A Torres, V Ramirez, F I García-Maceira, E Agüera, A Santamaria, I Túnez
Garlic is a component of the Mediterranean diet. S-allyl cysteine (SAC), the most common organosulphur present in garlic, possesses neuroprotective properties. This investigation was performed to evaluate the dose-dependent protective action of SAC on oxidative damage, inflammation and gut microbiota alterations biomarkers. Experimental autoimmune encephalomyelitis (EAE) as a model of multiple sclerosis (MS) was induced by the myelin oligrodendrocyte glycoprotein (MOG), whose effects were quantified by examining the changes in: clinical score, lipid peroxidation products, carbonylated proteins, glutathione system, tumor necrosis factor alpha (TNFα), and lypopolysaccharide membrane bacteria (LPS)...
September 19, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28937034/effect-of-cordyceps-sinensis-on-the-treatment-of-experimental-autoimmune-encephalomyelitis-a-pilot-study-on-mice-model
#3
Shan-Shan Zhong, Ya-Juan Xiang, Pen-Ju Liu, Yang He, Ting-Ting Yang, Yang-Yang Wang, A Rong, Jun Zhang, Guang-Zhi Liu
BACKGROUND: As a traditional Chinese medicine, Cordyceps sinensis (CS) possesses a variety of immunoregulatory properties. This study aimed to explore the therapeutic potential of CS in a mice model of multiple sclerosis (MS)-experimental autoimmune encephalomyelitis (EAE). METHODS: Female C57BL/6 mice were immunized with myelin oligodendrocyte glycoprotein35-55to induce EAE, followed by an instant intragastric feeding with a low dosage of CS (low-CS group, n = 5), high dosage of CS (high-CS group, n = 5), or the same volume of normal saline (control group, n = 5)...
October 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28931570/mitochondrial-dna-double-strand-breaks-in-oligodendrocytes-cause-demyelination-axonal-injury-and-cns-inflammation
#4
Pernille M Madsen, Milena Pinto, Shreyans Patel, Stephanie McCarthy, Han Gao, Mehran Taherian, Shaffiat Karmally, Claudia V Pereira, Galina Dvoriantchikova, Dmitry Ivanov, Kenji F Tanaka, Carlos T Moraes, Roberta Brambilla
Mitochondrial dysfunction has been implicated in the pathophysiology of neurodegenerative disorders, including multiple sclerosis (MS). To date, the investigation of mitochondrial dysfunction in MS has focused exclusively on neurons, with no studies exploring whether dysregulation of mitochondrial bioenergetics and/or genetics in oligodendrocytes might be associated with the etiopathogenesis of MS and other demyelinating syndromes. To address this question, we established a mouse model where mitochondrial DNA (mtDNA) double-strand breaks (DSB) were specifically induced in myelinating oligodendrocytes (PLP:mtPstI mice) by expressing a mitochondrial-targeted endonuclease, mtPstI, starting at 3 weeks of age...
September 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28929835/dab389il-2-recombinant-fusion-toxin-effect-on-lymphocyte-and-macrophage-producing-cytokine-subpopulation-cells-in-experimentally-induced-demyelinating-disease-in-mice
#5
Mahendra K Bhopale, Brendan Hilliard, Cris S Constantinescu, S Michael Phillips, Abdolmohamad Rostami
CONTEXT: We have reported previously that DAB389IL-2 recombinant fusion toxin targets IL-2R bearing CD4(+) cells, and suppresses demyelinating disease in acute (A) - and chronic (C) - experimental autoimmune encephalomyelitis (EAE) animal models of multiple sclerosis. OBJECTIVES: The present study was undertaken to investigate the effect of DAB389IL-2 treatment on various cytokine-secreting cell populations in A-EAE and C-EAE mice. MATERIALS AND METHODS: The effects of DAB389IL-2 at doses of 200-, 800-, or 1600 kU administered i...
September 20, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28928747/modulation-of-multiple-sclerosis-and-its-animal-model-experimental-autoimmune-encephalomyelitis-by-food-and-gut-microbiota
#6
REVIEW
Ward J van den Hoogen, Jon D Laman, Bert A 't Hart
Multiple sclerosis (MS) is an autoimmune neurological disease characterized by chronic inflammation of the central nervous system (CNS), leading to demyelination, axonal damage, and symptoms such as fatigue and disability. Although the cause of MS is not known, the infiltration of peripherally activated immune cells into the CNS has a key pathogenic role. Accumulating evidence supports an important role of diet and gut microbiota in immune-mediated diseases. Preclinical as well as clinical studies suggest a role for gut microbiota and dietary components in MS...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28926943/monoclonal-antibodies-in-preclinical-eae-models-of-multiple-sclerosis-a-systematic-review
#7
REVIEW
Katja Schmitz, Gerd Geisslinger, Irmgard Tegeder
Monoclonal antibodies (mAb) are promising therapeutics in multiple sclerosis and multiple new candidates have been developed, hence increasing the need for some agreement for preclinical mAb studies. We systematically analyzed publications of experimental autoimmune encephalomyelitis (EAE) studies showing effects of monoclonal antibodies. A PubMed search retrieved 570 records, out of which 122 studies with 253 experiments were eligible based on experimental design, number of animals and presentation of time courses of EAE scores...
September 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28923927/mif-and-d-dt-are-potential-disease-severity-modifiers-in-male-ms-subjects
#8
Gil Benedek, Roberto Meza-Romero, Kelley Jordan, Ying Zhang, Ha Nguyen, Gail Kent, Jia Li, Edwin Siu, Jenny Frazer, Marta Piecychna, Xin Du, Antoine Sreih, Lin Leng, Jack Wiedrick, Stacy J Caillier, Halina Offner, Jorge R Oksenberg, Vijayshree Yadav, Dennis Bourdette, Richard Bucala, Arthur A Vandenbark
Little is known about mechanisms that drive the development of progressive multiple sclerosis (MS), although inflammatory factors, such as macrophage migration inhibitory factor (MIF), its homolog D-dopachrome tautomerase (D-DT), and their common receptor CD74 may contribute to disease worsening. Our findings demonstrate elevated MIF and D-DT levels in males with progressive disease compared with relapsing-remitting males (RRMS) and female MS subjects, with increased levels of CD74 in females vs. males with high MS disease severity...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28919108/the-renin-angiotensin-system-regulates-neurodegeneration-in-a-mouse-model-of-optic-neuritis
#9
Xiaoli Guo, Kazuhiko Namekata, Atsuko Kimura, Chikako Harada, Takayuki Harada
The major role of the renin-angiotensin system (RAS), including that of angiotensin II (Ang II), the principal effector molecule, in the cardiovascular system is well known. Increasing evidence suggests that the RAS also plays a role in the development of autoimmune diseases. Optic neuritis (ie, inflammation of the optic nerve, with retinal ganglion cell [RGC] loss) is strongly associated with multiple sclerosis (MS). Herein, we investigated the effects of candesartan, an Ang II receptor antagonist, on optic neuritis in experimental autoimmune encephalomyelitis (EAE), an animal model of MS...
September 14, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28915963/hepcidin-and-metallothioneins-as-molecular-base-for-sex-dependent-differences-in-clinical-course-of-experimental-autoimmune-encephalomyelitis-in-chronic-iron-overload
#10
Božena Ćurko-Cofek, Tanja Grubić Kezele, Vesna Barac-Latas
Multiple sclerosis is a chronic demyelinating disease of the central nervous system characterised by inflammatory and degenerative changes. It is considered that disease arises from the influence of environmental factors on genetically susceptible individuals. Recent researches, using magnetic resonance imaging, connected iron deposits in different brain regions with demyelinating process in multiple sclerosis patients. Although iron is an essential trace element important for many biological functions it could be harmful because iron excess can induce the production of reactive oxygen species, development of oxidative stress and lipid peroxidation which leads to demyelination...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915632/decitabine-inhibits-t-cell-proliferation-via-a-novel-tet2-dependent-mechanism-and-exerts-potent-protective-effect-in-mouse-auto-and-allo-immunity-models
#11
Xue Wang, Jun Wang, Yong Yu, Tonghui Ma, Ping Chen, Bing Zhou, Ran Tao
Multiple sclerosis (MS) is an autoimmune disease characterized by the dysregulated immune response including innate and adaptive immune responses. Increasing evidence has proven the importance of epigenetic modification in the progression of MS. Recent studies revealed that low-dose decitabine (Dec, 5-Aza-2'-deoxycytidine), which incorporates into replicating DNA and inhibits DNA methylation, could prevent experimental autoimmune encephalomyelitis (EAE) development by increasing the number of regulatory T cells (Tregs)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28914804/the-role-of-erk-signaling-in-experimental-autoimmune-encephalomyelitis
#12
Katharina Birkner, Beatrice Wasser, Julia Loos, Alexander Plotnikov, Rony Seger, Frauke Zipp, Esther Witsch, Stefan Bittner
Extracellular signal-regulated kinase (ERK) signaling plays a crucial role in regulating immune cell function and has been implicated in autoimmune disorders. To date, all commercially available inhibitors of ERK target upstream components, such as mitogen-activated protein (MAP) kinase/ERK kinase (MEKs), but not ERK itself. Here, we directly inhibit nuclear ERK translocation by a novel pharmacological approach (Glu-Pro-Glu (EPE) peptide), leading to an increase in cytosolic ERK phosphorylation during T helper (Th)17 cell differentiation...
September 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28911655/therapeutic-effects-of-d-aspartate-in-a-mouse-model-of-multiple-sclerosis
#13
Sanaz Afraei, Antimo D'Aniello, Reza Sedaghat, Parvin Ekhtiari, Gholamreza Azizi, Nakisa Tabrizian, Laura Magliozzi, Zahra Aghazadeh, Abbas Mirshafiey
Experimental autoimmune encephalomyelitis (EAE) is an animal model of multiple sclerosis. EAE is mainly mediated by adaptive and innate immune responses that leads to an inflammatory demyelization and axonal damage. The aim of the present research was to examine the therapeutic efficacy of D-aspartic acid (D-Asp) on a mouse EAE model. EAE induction was performed in female C57BL/6 mice by myelin 40 oligodendrocyte glycoprotein (35-55) in a complete Freund's adjuvant emulsion, and D-Asp was used to test its efficiency in the reduction of EAE...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28899788/the-translocator-protein-ligand-xbd173-improves-clinical-symptoms-and-neuropathological-markers-in-the-sjl-j-mouse-model-of-multiple-sclerosis
#14
Géraldine Leva, Christian Klein, Jérémie Benyounes, François Hallé, Frédéric Bihel, Nicolas Collongues, Jérôme De Seze, Ayikoe-Guy Mensah-Nyagan, Christine Patte-Mensah
Multiple sclerosis (MS) is a severe autoimmune disease characterized by inflammatory, demyelinating and neurodegenerative components causing motor, sensory, visual and/or cognitive symptoms. The relapsing-remitting MS affecting 85% of patients is reliably mimicked by the proteolipid-protein (PLP)-induced experimental autoimmune encephalomyelitis (EAE) SJL/J-mouse model. Significant progress was made for MS treatment but the development of effective therapies devoid of severe side-effects remains a great challenge...
September 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28899400/impact-of-combined-sodium-chloride-and-saturated-long-chain-fatty-acid-challenge-on-the-differentiation-of-t-helper-cells-in-neuroinflammation
#15
Anna Hammer, Anne Schliep, Stefanie Jörg, Aiden Haghikia, Ralf Gold, Markus Kleinewietfeld, Dominik N Müller, Ralf A Linker
BACKGROUND: There has been a marked increase in the incidence of autoimmune diseases like multiple sclerosis (MS) in the last decades which is most likely driven by a change in environmental factors. Here, growing evidence suggests that ingredients of a Western diet like high intake of sodium chloride (NaCl) or saturated fatty acids may impact systemic immune responses, thus increasing disease susceptibility. Recently, we have shown that high dietary salt or long-chain fatty acid (LCFA) intake indeed aggravates T helper (Th) cell responses and neuroinflammation...
September 12, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28893978/gut-bacteria-from-multiple-sclerosis-patients-modulate-human-t-cells-and-exacerbate-symptoms-in-mouse-models
#16
Egle Cekanaviciute, Bryan B Yoo, Tessel F Runia, Justine W Debelius, Sneha Singh, Charlotte A Nelson, Rachel Kanner, Yadira Bencosme, Yun Kyung Lee, Stephen L Hauser, Elizabeth Crabtree-Hartman, Ilana Katz Sand, Mar Gacias, Yungjiao Zhu, Patrizia Casaccia, Bruce A C Cree, Rob Knight, Sarkis K Mazmanian, Sergio E Baranzini
The gut microbiota regulates T cell functions throughout the body. We hypothesized that intestinal bacteria impact the pathogenesis of multiple sclerosis (MS), an autoimmune disorder of the CNS and thus analyzed the microbiomes of 71 MS patients not undergoing treatment and 71 healthy controls. Although no major shifts in microbial community structure were found, we identified specific bacterial taxa that were significantly associated with MS. Akkermansia muciniphila and Acinetobacter calcoaceticus, both increased in MS patients, induced proinflammatory responses in human peripheral blood mononuclear cells and in monocolonized mice...
September 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28891414/therapeutic-effects-of-walnut-oil-on-the-animal-model-of-multiple-sclerosis
#17
Ali Ganji, Iman Farahani, Mohammad Reza Palizvan, Ali Ghazavi, Mostafa Ejtehadifar, Mohsen Ebrahimimonfared, Mana Shojapour, Ghasem Mosayebi
OBJECTIVES: Therapeutic approaches for multiple sclerosis (MS), an autoimmune disease of the central nervous system (CNS), are accompanied by various undesirable side effects. Owing to the anti-inflammatory and antioxidant effects of walnut, we investigated its effects on the experimental autoimmune encephalomyelitis (EAE) mouse model of MS. METHODS: After EAE induction in mice, the treated group was gavaged daily with walnut oil. The weights and clinical symptoms were monitored daily for 21 days following the onset of symptoms...
September 11, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28889992/astrocytic-expression-of-the-cxcl12-receptor-cxcr7-ackr3-is-a-hallmark-of-the-diseased-but-not-developing-cns
#18
Malte Puchert, Fabian Pelkner, Gregor Stein, Doychin N Angelov, Johannes Boltze, Daniel-Christoph Wagner, Francesca Odoardi, Alexander Flügel, Wolfgang J Streit, Jürgen Engele
Based on our previous demonstration of CXCR7 as the major mediator of CXCL12 signaling in cultured astrocytes, we have now compared astrocytic expression of the CXCL12 receptors, CXCR7 and CXCR4, during CNS development and disease. In addition, we asked whether disease-associated conditions/factors affect expression of CXCL12 receptors in astrocytes. In the late embryonic rat brain, CXCR7(+)/GFAP(+) cells were restricted to the ventricular/subventricular zone while CXCR4 was widely absent from GFAP-positive cells...
September 7, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28889362/a-novel-aza-mbp-altered-peptide-ligand-for-the-treatment-of-experimental-autoimmune-encephalomyelitis
#19
Nicole N M Trager, Jonathan T Butler, Jennifer Harmon, Joshua Mount, Maria Podbielska, Azizul Haque, Naren L Banik, Craig C Beeson
Myelin basic protein (MBP) is a major target of T cells in lesions of multiple sclerosis (MS) patients and its animal model, experimental autoimmune encephalomyelitis (EAE). Interactions between the major histocompatibility complex II containing antigenic peptides and the T cell receptor activate CD4+ T cells that perpetuate EAE and MS. Previously reported data has shown that treating with an altered peptide ligand (APL) in which the normal antigenic peptide sequence of MBP has been slightly changed at T cell contact positions is helpful in reducing disease in both rodents and humans...
September 9, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28887429/nfm-cross-reactivity-to-mog-does-not-expand-a-critical-threshold-level-of-high-affinity-t-cells-necessary-for-onset-of-demyelinating-disease
#20
Lori Blanchfield, Joseph J Sabatino, Laurel Lawrence, Brian D Evavold
Of interest to the etiology of demyelinating autoimmune disease is the potential to aberrantly activate CD4(+) T cells due to cross-recognition of multiple self-epitopes such as has been suggested for myelin oligodendrocyte glycoprotein epitope 35-55 (MOG35-55) and neurofilament medium protein epitope 15-35 (NFM15-35). NFM15-35 is immunogenic in C57BL/6 mice but fails to induce demyelinating disease by polyclonal T cells despite having the same TCR contact residues as MOG35-55, a known encephalitogenic Ag...
September 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
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