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https://www.readbyqxmd.com/read/28321419/pvaxhsp65-vaccination-primes-for-high-il-10-production-and-decreases-experimental-encephalomyelitis-severity
#1
Sofia Fernanda Gonçalves Zorzella-Pezavento, Fernanda Chiuso-Minicucci, Thais Graziela Donegá França, Larissa Lumi Watanabe Ishikawa, Larissa Camargo da Rosa, Priscila Maria Colavite, Bianca Balbino, Camila Marques, Maura Rosane Valerio Ikoma, Ana Paula Masson, Célio Lopes Silva, Alexandrina Sartori
Experimental autoimmune encephalomyelitis (EAE) is a demyelinating pathology of the central nervous system (CNS) used as a model to study multiple sclerosis immunopathology. EAE has also been extensively employed to evaluate potentially therapeutic schemes. Considering the presence of an immune response directed to heat shock proteins (hsps) in autoimmune diseases and the immunoregulatory potential of these molecules, we evaluated the effect of a previous immunization with a genetic vaccine containing the mycobacterial hsp65 gene on EAE development...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28320131/epigenetic-and-gene-expression-alterations-of-foxp3-in-the-t-cells-of-eae-mouse-model-of-multiple-sclerosis
#2
Ali Noori-Zadeh, Seyed Alireza Mesbah-Namin, Ali Akbar Saboor-Yaraghi
Multiple sclerosis (MS) is a chronic autoimmune disease with demyelination and neurodegeneration of the central nervous system. It has been shown that the regulatory T (Treg) cells are responsible for maintaining tolerance to self-antigens and can suppress the autoimmune process in several animal models such as experimental autoimmune encephalomyelitis (EAE), a mouse model of MS. Recent basic studies have demonstrated that forkhead box P (FOXP3) and BTB domain and CNC homolog 2 (BACH2) are the master transcription factors of these cells playing a pivotal role in the polarization of naïve T cells into Treg cells...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28316999/does-the-gut-microbiota-influence-immunity-and-inflammation-in-multiple-sclerosis-pathophysiology
#3
Monika Adamczyk-Sowa, Aldona Medrek, Paulina Madej, Wirginia Michlicka, Pawel Dobrakowski
Aim. Evaluation of the impact of gut microflora on the pathophysiology of MS. Results. The etiopathogenesis of MS is not fully known. Gut microbiota may be of a great importance in the pathogenesis of MS, since recent findings suggest that substitutions of certain microbial population in the gut can lead to proinflammatory state, which can lead to MS in humans. In contrast, other commensal bacteria and their antigenic products may protect against inflammation within the central nervous system. The type of intestinal flora is affected by antibiotics, stress, or diet...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28315956/axonal-transport-deficits-in-multiple-sclerosis-spiraling-into-the-abyss
#4
REVIEW
Robert van den Berg, Casper C Hoogenraad, Rogier Q Hintzen
The transport of mitochondria and other cellular components along the axonal microtubule cytoskeleton plays an essential role in neuronal survival. Defects in this system have been linked to a large number of neurological disorders. In multiple sclerosis (MS) and associated models such as experimental autoimmune encephalomyelitis (EAE), alterations in axonal transport have been shown to exist before neurodegeneration occurs. Genome-wide association (GWA) studies have linked several motor proteins to MS susceptibility, while neuropathological studies have shown accumulations of proteins and organelles suggestive for transport deficits...
March 18, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28303131/multiplexed-single-intact-cell-droplet-digital-pcr-music-ddpcr-method-for-specific-detection-of-enterohemorrhagic-e-coli-ehec-in-food-enrichment-cultures
#5
Tanis C McMahon, Burton W Blais, Alex Wong, Catherine D Carrillo
Foodborne illness attributed to enterohemorrhagic E. coli (EHEC), a highly pathogenic subset of Shiga toxin-producing E. coli (STEC), is increasingly recognized as a significant public health issue. Current microbiological methods for identification of EHEC in foods often use PCR-based approaches to screen enrichment broth cultures for characteristic gene markers [i.e., Shiga toxin (stx) and intimin (eae)]. However, false positives arise when complex food matrices, such as beef, contain mixtures of eae-negative STEC and eae-positive E...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28302134/microrna-142-regulates-inflammation-and-t-cell-differentiation-in-an-animal-model-of-multiple-sclerosis
#6
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/28299403/effects-of-ifn-%C3%AE-1a-and-ifn-%C3%AE-1b-treatment-on-the-expression-of-cytokines-inducible-nos-nos-type-ii-and-myelin-proteins-in-animal-model-of-multiple-sclerosis
#7
Natalia Lubina-Dąbrowska, Adam Stepień, Grzegorz Sulkowski, Beata Dąbrowska-Bouta, Józef Langfort, Małgorzata Chalimoniuk
The aim of this study was to investigate the effects of interferon (IFN)-β1a and IFN-β1b treatment on inflammatory factors and myelin protein levels in the brain cortex of the Lewis rat experimental autoimmune encephalomyelitis (EAE), animal model of multiple sclerosis. To induce EAE, rat were immunized with inoculums containing spinal cord guinea pig homogenized in phosphate-buffered saline and emulsified in Freund's complete adjuvant containing 110 µg of the appropriate antigen in 100 µl of an emulsion and additionally 4-mg/ml Mycobacterium tuberculosis (H37Ra)...
March 15, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28294683/evaluation-of-rectoanal-mucosal-swab-sampling-for-molecular-detection-of-enterohemorrhagic-escherichia-coli-in-beef-cattle
#8
Getahun E Agga, Terrance M Arthur, Susanne Hinkley, Joseph M Bosilevac
Cattle are a primary reservoir of enterohemorrhagic Escherichia coli (EHEC), and contaminated beef products are a source of human infections. The U.S. Department of Agriculture Food Safety and Inspection Service declared seven EHEC serogroups (O26, O45, O103, O111, O121, O145, and O157) as adulterants in raw ground beef. Sampling a large number of animals for EHEC surveillance or evaluations of EHEC-focused preharvest interventions requires a convenient and robust sampling method. We evaluated the diagnostic performance of rectoanal mucosal swab (RAMS) for the detection of the top seven EHEC serogroups...
March 15, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28292961/modeling-month-season-of-birth-as-a-risk-factor-in-mouse-models-of-chronic-disease-from-multiple-sclerosis-to-autoimmune-encephalomyelitis
#9
Jacob D Reynolds, Laure K Case, Dimitry N Krementsov, Abbas Raza, Rose Bartiss, Cory Teuscher
Month-season of birth (M-SOB) is a risk factor in multiple chronic diseases, including multiple sclerosis (MS), where the lowest and greatest risk of developing MS coincide with the lowest and highest birth rates, respectively. To determine whether M-SOB effects in such chronic diseases as MS can be experimentally modeled, we examined the effect of M-SOB on susceptibility of C57BL/6J mice to experimental autoimmune encephalomyelitis (EAE). As in MS, mice that were born during the M-SOB with the lowest birth rate were less susceptible to EAE than mice born during the M-SOB with the highest birth rate...
March 14, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28290789/-the-evaluation-of-left-ventricular-diastolic-function-by-echocardiography-in-patients-with-preserved-ejection-fraction
#10
M N Alekhin, A M Grishin, O A Petrova
OBJECTIVE: to compare non-invasive evaluation of left ventricular (LV) diastolic function (DF) by echocardiography using algorithms of the 2009 and 2016 American Society of Echocardiography (ASE)/European Association of Echocardiography (EAE, now European Association of Cardiovascular Imaging [EACVI]) Recommendations. MATERIAL AND METHODS: The study included 100 patients with sinus rhythm and preserved left ventricular (LV) ejection fraction (EF). In all patients LV DF was assessed using both algorithms...
February 2017: Kardiologiia
https://www.readbyqxmd.com/read/28289417/murine-cytomegalovirus-infection-induces-susceptibility-to-eae-in-resistant-balb-c-mice
#11
Jelena Milovanovic, Branka Popovic, Marija Milovanovic, Daria Kvestak, Aleksandar Arsenijevic, Bojana Stojanovic, Irena Tanaskovic, Astrid Krmpotic, Nebojsa Arsenijevic, Stipan Jonjic, Miodrag L Lukic
In contrast to C57BL/6 mice, BALB/c mice are relatively resistant to the induction of experimental autoimmune encephalomyelitis (EAE) after challenge with MOG35-55 peptide. Here, we provide the first evidence that infection with murine cytomegalovirus (MCMV) in adulthood abrogates this resistance. Infected BALB/c mice developed clinical and histological signs similar to those seen in susceptible C57BL/6 mice. In addition to CD4(+) cells, large proportion of cells in the infiltrate of diseased BALB/c mice was CD8(+), similar with findings in multiple sclerosis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28288184/cd73-is-expressed-by-inflammatory-th17-cells-in-experimental-autoimmune-encephalomyelitis-but-does-not-limit-differentiation-or-pathogenesis
#12
Gerard Hernandez-Mir, Mandy J McGeachy
CD73 works together with CD39 to convert extracellular ATP to immunoregulatory adenosine, thus inhibiting inflammation. TGFβ-mediated CD73 expression on 'regulatory' Th17 cells limits their ability to eradicate tumors, similar to the immunosuppressive mechanism described for CD73 on Tregs. However, CD73 is also expressed on Th17 cells thought to be inflammatory in Crohn's disease. CD73 has previously been reported to contribute to inflammation in the central nervous system (CNS). In experimental autoimmune encephalomyelitis (EAE), we found that inflammatory cytokine-producing Th17 cells showed increased CD73 expression as disease progressed...
2017: PloS One
https://www.readbyqxmd.com/read/28287595/bioluminescence-and-near-infrared-imaging-of-optic-neuritis-and-brain-inflammation-in-the-eae-model-of-multiple-sclerosis-in-mice
#13
Katja Schmitz, Irmgard Tegeder
Experimental autoimmune encephalomyelitis (EAE) in SJL/J mice is a model for relapsing-remitting multiple sclerosis (RRMS). Clinical EAE scores describing motor function deficits are basic readouts of the immune-mediated inflammation of the spinal cord. However, scores and body weight do not allow for an in vivo assessment of brain inflammation and optic neuritis. The latter is an early and frequent manifestation in about 2/3 of MS patients. Here, we show methods for bioluminescence and near-infrared live imaging to assess EAE evoked optic neuritis, brain inflammation, and blood-brain barrier (BBB) disruption in living mice using an in vivo imaging system...
March 1, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28284714/strain-specificities-in-cellular-and-molecular-immunopathogenic-mechanisms-underlying-development-of-experimental-autoimmune-encephalomyelitis-in-aged-rats
#14
Mirjana Nacka-Aleksić, Zorica Stojić-Vukanić, Ivan Pilipović, Ivana Vujnović, Biljana Bufan, Mirjana Dimitrijević, Gordana Leposavić
To understand strain-specificities of immune system in aged rats and their immunopathological implications, CD4+ T lymphocyte-mediated neuroinflammation in experimental autoimmune encephalomyelitis (EAE) was studied in two strains. Upon immunization for EAE, 22-24-month-old Albino Oxford (AO) rats developed milder neurological deficit of prolonged duration compared with their Dark Agouti (DA) counterparts. Consistently, they exhibited: (i) diminished neuroantigen-specific CD4+ T lymphocyte generation in draining lymph nodes (reflecting lower density of high-affinity IL-2 receptor complex on their surface and higher CD4+FoxP3+CD25+ regulatory cell frequency); (ii) less favorable spinal cord expression of CXCL12 and CCL2, and consequently diminished infiltration of neuroantigen-specific CD4+ T lymphocytes, including highly pathogenic IL-17+IFN-γ+ ones, and inflammatory monocytes into the spinal cord and (iii) subsequently impaired CD4+ T lymphocyte reactivation/survival and differentiation into highly pathogenic IL-17+ cells (reflecting downregulated expression of IL-1β, IL-6 and IL-23/p19)...
March 8, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28284347/novel-feedback-loop-between-m2-macrophages-microglia-and-regulatory-b-cells-in-estrogen-protected-eae-mice
#15
Gil Benedek, Jun Zhang, Ha Nguyen, Gail Kent, Hilary Seifert, Arthur A Vandenbark, Halina Offner
Immunoregulatory sex hormones, including estrogen and estriol, may prevent relapses in multiple sclerosis during pregnancy. Our previous studies have demonstrated that regulatory B cells are crucial for estrogen-mediated protection against experimental autoimmune encephalomyelitis (EAE). Herein, we demonstrate an estrogen-dependent induction of alternatively activated (M2) macrophages/microglia that results in an increased frequency of regulatory B cells in the spinal cord of estrogen treated mice with EAE...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28284334/voluntary-wheel-running-differentially-affects-disease-outcomes-in-male-and-female-mice-with-experimental-autoimmune-encephalomyelitis
#16
Katherine A Mifflin, Emma Frieser, Curtis Benson, Glen Baker, Bradley J Kerr
Multiple sclerosis (MS) is an inflammatory neurodegenerative disease of the central nervous system. The primary symptoms of MS include the loss of sensory and motor function. Exercise has been shown to modulate disease parameters in experimental autoimmune encephalomyelitis (EAE), a mouse model of MS, by reducing immune cell infiltration and oxidative stress. However, these initial studies were carried out exclusively in female mice. The present study compared the effects of daily voluntary wheel running on several disease parameters in male and female mice with EAE...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28283756/dopamine-t-cells-and-multiple-sclerosis-ms
#17
REVIEW
Mia Levite, Franca Marino, Marco Cosentino
Dopamine is a key neurotransmitter that induces critical effects in the nervous system and in many peripheral organs, via 5 dopamine receptors (DRs): D1R-D5R. Dopamine also induces many direct and very potent effects on many DR-expressing immune cells, primarily T cells and dendritic cells. In this review, we focus only on dopamine receptors, effects and production in T cells. Dopamine by itself (at an optimal concentration of~0.1 nM) induces multiple function of resting normal human T cells, among them: T cell adhesion, chemotactic migration, homing, cytokine secretion and others...
March 10, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28277099/cd169-is-a-marker-for-highly-pathogenic-phagocytes-in-multiple-sclerosis
#18
Jeroen Fj Bogie, Ellen Boelen, Els Louagie, Peter Delputte, Dirk Elewaut, Jack van Horssen, Jerome Ja Hendriks, Niels Hellings
BACKGROUND: Phagocytes, such as macrophages and microglia, are key effector cells in the pathophysiology of multiple sclerosis (MS). It is widely accepted that they instigate and promote neuroinflammatory and neurodegenerative events in MS. An increasing amount of studies indicate that Siglec-1, also known CD169, is a marker for activated phagocytes in inflammatory disorders. OBJECTIVE: In this study, we set out to define how CD169(+) phagocytes contribute to neuroinflammation in MS...
March 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28275164/plasminogen-deficiency-delays-the-onset-and-protects-from-demyelination-and-paralysis-in-autoimmune-neuroinflammatory-disease
#19
Maureen A Shaw, Zhen Gao, Kathryn E McElhinney, Sherry Thornton, Matthew J Flick, Adam Lane, Jay L Degen, Jae Kyu Ryu, Katerina Akassoglou, Eric S Mullins
Multiple Sclerosis (MS) is a neuroinflammatory, demyelinating disease of the central nervous system. Fibrin(ogen) deposition at sites of blood brain barrier breakdown is a prominent feature of neuroinflammatory disease and contributes to disease severity. Plasminogen, the primary fibrinolytic enzyme, also modifies inflammatory processes. We used a murine model of MS, experimental autoimmune encephalomyelitis (EAE), to evaluate the hypothesis that the loss of plasminogen would exacerbate neuroinflammatory disease...
March 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28273770/transglutaminase-6-is-an-autoantigen-in-progressive-multiple-sclerosis-and-is-upregulated-in-reactive-astrocytes
#20
Massimiliano Cristofanilli, Daniel Gratch, Benjamin Pagano, Kelsey McDermott, Jessie Huang, Jeffrey Jian, Deneb Bates, Saud A Sadiq
BACKGROUND: Transglutaminase-6 (TGM6), a member of the transglutaminase enzyme family, is found predominantly in central nervous system (CNS) neurons under physiological conditions. It has been proposed as an autoimmune target in cerebral palsy, gluten-sensitive cerebellar ataxia, and schizophrenia. OBJECTIVE: To investigate TGM6 involvement in multiple sclerosis (MS). METHODS: Antibody levels against TGM6 (TGM6-IgG) were measured in the cerebrospinal fluid (CSF) of 62 primary progressive multiple sclerosis (PPMS), 85 secondary progressive multiple sclerosis (SPMS), and 50 relapsing-remitting multiple sclerosis (RRMS) patients and 51 controls...
December 1, 2016: Multiple Sclerosis: Clinical and Laboratory Research
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