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Oxidative stress in multiple sclerosis

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https://www.readbyqxmd.com/read/29210072/chemical-hypoxia-induced-integrated-stress-response-activation-in-oligodendrocytes-is-mediated-by-the-transcription-factor-nuclear-factor-erythroid-derived-2-like-2-nrf2
#1
Nico Teske, Annette Liessem, Felix Fischbach, Tim Clarner, C Beyer, Christoph Wruck, Athanassios Fragoulis, Simone C Tauber, Marion Victor, Markus Kipp
The extent of remyelination in multiple sclerosis (MS) lesions is often incomplete. Injury to oligodendrocyte progenitor cells can be a contributing factor for such incomplete remyelination. The precise mechanisms underlying insufficient repair remain to be defined, but oxidative stress appears to be involved. Here, we used immortalized oligodendrocyte cell lines as model systems to investigate a causal relation of oxidative stress and endoplasmic reticulum stress signaling cascades. OLN93 and OliNeu cells were subjected to chemical hypoxia by blocking the respiratory chain at various levels...
December 6, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29201025/regulation-of-neuroinflammation-what-role-for-the-tumor-necrosis-factor-like-weak-inducer-of-apoptosis-fn14-pathway
#2
REVIEW
Audrey Boulamery, Sophie Desplat-Jégo
Observed in many central nervous system diseases, neuroinflammation (NI) proceeds from peripheral immune cell infiltration into the parenchyma, from cytokine secretion and from oxidative stress. Astrocytes and microglia also get activated and proliferate. NI manifestations and consequences depend on its context and on the acute or chronic aspect of the disease. The tumor necrosis factor-like weak inducer of apoptosis (TWEAK)/Fn14 pathway has been involved in chronic human inflammatory pathologies such as neurodegenerative, autoimmune, or malignant diseases...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29181127/oxidative-modification-of-blood-serum-proteins-in-multiple-sclerosis-after-interferon-beta-and-melatonin-treatment
#3
Monika Adamczyk-Sowa, Sabina Galiniak, Ewa Żyracka, Michalina Grzesik, Katarzyna Naparło, Paweł Sowa, Grzegorz Bartosz, Izabela Sadowska-Bartosz
Multiple sclerosis (MS) is a disease involving oxidative stress (OS). This study was aimed at examination of the effect of melatonin supplementation on OS parameters, especially oxidative protein modifications of blood serum proteins, in MS patients. The study included 11 control subjects, 14 de novo diagnosed MS patients with the relapsing-remitting form of MS (RRMS), 36 patients with RRMS receiving interferon beta-1b (250 μg every other day), and 25 RRMS patients receiving interferon beta-1b plus melatonin (5 mg daily)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29156301/evaluation-of-serum-arsenic-and-its-effects-on-antioxidant-alterations-in-relapsing-remitting-multiple-sclerosis-patients
#4
Kobra Bahrampour Juybari, Ghasem Ebrahimi, Mohammad Amin Momeni Moghaddam, Gholamreza Asadikaram, Masoud Torkzadeh-Mahani, Mahboobeh Akbari, Solmaz Mirzamohammadi, Atieh Karimi, Mohammad Hadi Nematollahi
BACKGROUND: Environmental factors that are involved in the development of autoimmune diseases include bacteria, viruses, and xenobiotics such as chemicals, drugs, and metals. Regarding the metals, a number of studies have demonstrated that oxidative stress is one of the well-directed pathways of arsenic-induced tissue damages. This study was designed to explore the serum concentrations of arsenic and its correlation with markers associated with oxidative stress in relapsing-remitting MS (RRMS) patients...
November 13, 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29138683/the-evaluation-of-oxidative-stress-parameters-in-serum-patients-with-relapsing-remitting-multiple-sclerosis-treated-with-ii-line-immunomodulatory-therapy
#5
Bożena Adamczyk, Sławomir Wawrzyniak, Sławomir Kasperczyk, Monika Adamczyk-Sowa
Objectives: The assessment of oxidative stress (OS) in serum relapsing-remitting multiple sclerosis patients treated with II-line immunomodulatory therapy (fingolimod, natalizumab) compared to newly diagnosed patients (de novo group) treated with interferon (IFN) beta and controls. The relationship between OS parameters and gender, age, disease duration, Expanded Disability Status Scale, annualized relapse rate, MRI lesions in patients treated with II-line. Materials and Methods: One hundred and twenty-one patients with RRMS were enrolled in the study...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29136024/severe-oxidative-stress-in-an-acute-inflammatory-demyelinating-model-in-the-rhesus-monkey
#6
Jordon Dunham, Reinofke van de Vis, Jan Bauer, Jacqueline Wubben, Nikki van Driel, Jon D Laman, Bert A 't Hart, Yolanda S Kap
Oxidative stress is increasingly implicated as a co-factor of tissue injury in inflammatory/demyelinating disorders of the central nervous system (CNS), such as multiple sclerosis (MS). While rodent experimental autoimmune encephalomyelitis (EAE) models diverge from human demyelinating disorders with respect to limited oxidative injury, we observed that in a non-human primate (NHP) model for MS, namely EAE in the common marmoset, key pathological features of the disease were recapitulated, including oxidative tissue injury...
2017: PloS One
https://www.readbyqxmd.com/read/29110780/multiple-sclerosis-and-other-demyelinating-and-autoimmune-inflammatory-diseases-of-the-central-nervous-system
#7
Clara Matute-Blanch, Xavier Montalban, Manuel Comabella
Multiple sclerosis (MS) is characterized by a substantial degree of heterogeneity in relation to clinical manifestations, disease course, radiologic findings, histopathologic characteristics of brain lesions, and response to treatment. In this scenario, there is a strong need in MS for biomarkers that reliably capture these diverse aspects of disease heterogeneity and assist, for instance, in disease diagnosis and stratification, in the prediction of disease course, or in the identification of new and effective therapies for the disease...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29107957/febuxostat-ameliorates-secondary-progressive-experimental-autoimmune-encephalomyelitis-by-restoring-mitochondrial-energy-production-in-a-got2-dependent-manner
#8
Josephe A Honorat, Yuji Nakatsuji, Mikito Shimizu, Makoto Kinoshita, Hisae Sumi-Akamaru, Tsutomu Sasaki, Kazushiro Takata, Toru Koda, Akiko Namba, Kazuya Yamashita, Eri Sanda, Manabu Sakaguchi, Atsushi Kumanogoh, Takashi Shirakura, Mizuho Tamura, Saburo Sakoda, Hideki Mochizuki, Tatsusada Okuno
Oxidative stress and mitochondrial dysfunction are important determinants of neurodegeneration in secondary progressive multiple sclerosis (SPMS). We previously showed that febuxostat, a xanthine oxidase inhibitor, ameliorated both relapsing-remitting and secondary progressive experimental autoimmune encephalomyelitis (EAE) by preventing neurodegeneration in mice. In this study, we investigated how febuxostat protects neuron in secondary progressive EAE. A DNA microarray analysis revealed that febuxostat treatment increased the CNS expression of several mitochondria-related genes in EAE mice, most notably including GOT2, which encodes glutamate oxaloacetate transaminase 2 (GOT2)...
2017: PloS One
https://www.readbyqxmd.com/read/29107207/association-of-serum-gamma-glutamyltransferase-and-c-reactive-proteins-with-neuromyelitis-optica-and-multiple-sclerosis
#9
Yaqing Shu, Rui Li, Wei Qiu, Yanyu Chang, Xiaobo Sun, Ling Fang, Chen Chen, Yu Yang, Zhengqi Lu, Xueqiang Hu, Allan G Kermode
BACKGROUND: Many studies have demonstrated that serum gamma glutamyltransferase (GGT) within normal range might be an early marker of oxidative stress. However the role of GGT in neuromyelitis optica (NMO) and multiple sclerosis (MS) is unknown. METHODS: We assessed the correlations among GGT and C-reactive protein (CRP) levels, as well as clinical characteristics of NMO and MS. Serum GGT and CRP levels were measured in 106 NMO patients, 87 MS patients, 79 patients with non-inflammatory neurological diseases (Parkinson disease) and 80 healthy controls (HC)...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29096692/donor-variability-may-mask-dimethyl-fumarate-s-effects-on-nuclear-factor-e2-related-factor-2-in-human-peripheral-blood-mononuclear-cells
#10
Sarah E Fiedler, Amelia R Kerns, Catherine Tsang, Haley N Love, Sonemany Salinthone
OBJECTIVE: Dimethyl fumarate (DMF) is an anti-inflammatory and antioxidant drug used to treat multiple sclerosis, but its mechanism(s) of action are not fully understood. In central nervous system (CNS) cells, DMF activates nuclear factor E2-related factor 2 (Nrf2), perhaps ameliorating oxidative stress-induced damage. However, it is not known whether DMF also activates Nrf2 in peripheral immune cells, which are known to participate in CNS demyelination. We conducted a single observation study to determine whether DMF can activate Nrf2 in peripheral immune cells in vitro...
November 2, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29079885/therapeutic-potential-of-curcumin-for-multiple-sclerosis
#11
Munibah Qureshi, Ebtesam A Al-Suhaimi, Fazli Wahid, Omer Shehzad, Adeeb Shehzad
Multiple sclerosis (MS) is a chronic autoimmune inflammatory disease of the central nervous system (CNS), characterized by demyelination, neuronal injury, and breaching of the blood-brain barrier (BBB). Epidemiological studies have shown that immunological, genetic, and environmental factors contribute to the progression and development of MS. T helper 17 (Th17) cells are crucial immunological participant in the pathophysiology of MS. The aberrant production of IL-17 and IL-22 by Th17 cells crosses BBB promotes its disruption and interferes with transmission of nerve signals through activation of neuroinflammation in the CNS...
October 27, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/29055472/human-glutathione-s-transferase-enzyme-gene-variations-and-risk-of-multiple-sclerosis-in-iranian-population-cohort
#12
Shahrbanou Parchami Barjui, Somayeh Reiisi, Asghar Bayati
Multiple sclerosis (MS) is an inflammatory disease with unknown etiology. Oxidative stress has been demonstrated to play a role in pathological and inflammatory mechanisms of MS. Cells activate antioxidant processes in response to oxidative stress. Glutathione is one of the antioxidant agents in the brain and serves as a cofactor for glutathione s-transferase (GST) enzymes for detoxifying nerve cells. Among different classes of GST, GSTM1 and GSTT1 are associated with the loss of function due to structural homozygous deletion...
October 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29049097/low-serum-uric-acid-levels-in-patients-with-acute-central-nervous-system-viral-infections
#13
Xiang Li, Qiaowen Tong, Dewei Xie, Zhibo Chen, Sipei Pan, Xu Zhang, Wanli Dong
Most acute central nervous system (CNS) viral infections lead to either encephalitis or meningitis. Many neurotropic viruses may cause CNS dysfunctions through various mechanisms including oxidative stress. Serum uric acid (SUA) levels, which are associated with oxidative stress and antioxidant status, are reduced in patients with various neurological disorders, including multiple sclerosis. We investigated the possible correlation between SUA levels and clinical disease status in patients with acute CNS viral infections...
December 13, 2017: Neuroreport
https://www.readbyqxmd.com/read/29022246/alpha-lipoic-acid-mitigates-toxic-induced-demyelination-in-the-corpus-callosum-by-lessening-of-oxidative-stress-and-stimulation-of-polydendrocytes-proliferation
#14
Nima Sanadgol, Fereshteh Golab, Hassan Askari, Fatemeh Moradi, Marziyeh Ajdary, Mehdi Mehdizadeh
Multiple Sclerosis (MS), is a disease that degenerates myelin in central nervous system (CNS). Reactive oxygen species (ROSs) are toxic metabolites, and accumulating data indicate that ROSs-mediated apoptosis of oligodendrocytes (OLGs) plays a major role in the pathogenesis of MS under oxidative stress conditions. In this study, we investigated the role of endogenous antioxidant alpha-lipoic acid (ALA) as ROSs scavenger in the OLGs loss and myelin degeneration during cuprizone (cup)-induced demyelination in the experimental model of MS...
October 12, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28991684/vitamin-d-deficiency-is-associated-with-disability-and-disease-progression-in-multiple-sclerosis-patients-independently-of-oxidative-and-nitrosative-stress
#15
Sayonara R Oliveira, Andréa N C Simão, Daniela Frizon Alfieri, Tamires Flauzino, Ana Paula Kallaur, Leda Mezzaroba, Marcell Alysson B Lozovoy, Beatriz Sardinha Sabino, Katerine Panichi Zanin Ferreira, Wildea L C J Pereira, Damacio R Kaimen-Maciel, Isaias Dichi, Edna M V Reiche
The aim of this study was to assess vitamin D status in patients with multiple sclerosis (MS) and to evaluate whether it was associated with oxidative and nitrosative stress (O&NS) markers and disability. This study included 137 patients with MS and 218 healthy controls. The markers evaluated were serum levels of 25-hydroxyvitamin D, lipid hydroperoxides, advanced oxidation protein products (AOPP), nitric oxide metabolites (NOx), and total radical-trapping antioxidant parameter TRAP/UA. Patients with 25(OH)D<20ng/mL showed higher EDSS (p=0...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28980404/preventive-and-therapeutic-potential-of-ascorbic-acid-in-neurodegenerative-diseases
#16
REVIEW
Morgana Moretti, Daiane Bittencourt Fraga, Ana Lúcia S Rodrigues
In this review, we summarize the involvement of ascorbic acid in neurodegenerative diseases by presenting available evidence on the behavioral and biochemical effects of this compound in animal models of neurodegeneration as well as the use of ascorbic acid as a therapeutic approach to alleviate neurodegenerative progression in clinical studies. Ascorbate, a reduced form of vitamin C, has gained interest for its multiple functions and mechanisms of action, contributing to the homeostasis of normal tissues and organs as well as to tissue regeneration...
October 4, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28978801/metabolic-alterations-in-multiple-sclerosis-and-the-impact-of-vitamin-d-supplementation
#17
Pavan Bhargava, Kathryn C Fitzgerald, Peter A Calabresi, Ellen M Mowry
BACKGROUND: Our goal was to identify changes in the metabolome in multiple sclerosis (MS) and how vitamin D supplementation alters metabolic profiles in MS patients and healthy controls. METHODS: We applied global untargeted metabolomics to plasma from a cross-sectional cohort of age- and sex-matched MS patients and controls and a second longitudinal cohort of MS patients and healthy controls who received 5,000 IU cholecalciferol daily for 90 days. We applied partial least squares discriminant analysis, weighted correlation network analysis (WGCNA), and pathway analysis to the metabolomics data...
October 5, 2017: JCI Insight
https://www.readbyqxmd.com/read/28966637/metabolic-pathways-as-possible-therapeutic-targets-for-progressive-multiple-sclerosis
#18
REVIEW
Rebecca M Heidker, Mitchell R Emerson, Steven M LeVine
Unlike relapsing remitting multiple sclerosis, there are very few therapeutic options for patients with progressive forms of multiple sclerosis. While immune mechanisms are key participants in the pathogenesis of relapsing remitting multiple sclerosis, the mechanisms underlying the development of progressive multiple sclerosis are less well understood. Putative mechanisms behind progressive multiple sclerosis have been put forth: insufficient energy production via mitochondrial dysfunction, activated microglia, iron accumulation, oxidative stress, activated astrocytes, Wallerian degeneration, apoptosis, etc...
August 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28958667/dimethyl-fumarate-influences-innate-and-adaptive-immunity-in-multiple-sclerosis
#19
Martin Diebold, Claudia Sievers, Glenn Bantug, Nicholas Sanderson, Ludwig Kappos, Jens Kuhle, Raija L P Lindberg, Tobias Derfuss
INTRODUCTION: The mode of action of dimethyl fumarate (DMF), an immunomodulatory treatment for relapsing-remitting multiple sclerosis (RRMS), has not yet been fully elucidated. While in-vitro experiments and animal studies suggest effects on immune cell survival, proliferation, migration and oxidative stress response, corresponding observations from human studies are lacking. This study aims to characterize ex-vivo and in-vivo effects in a cohort of DMF treated RRMS patients. METHODS: Blood samples were collected from twenty well-characterized RRMS patients at baseline and after 3, 6 and 12 months of DMF treatment and an age- and gender-matched cohort of 20 healthy individuals at 0 and 3 months...
September 25, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28949008/vitamin-d-deficiency-accelerates-ageing-and-age-related-diseases-a-novel-hypothesis
#20
Michael J Berridge
Ageing can occur at different rates, but what controls this variable rate is unknown. Here I have developed a hypothesis that vitamin D may act to control the rate of ageing. The basis of this hypothesis emerged from studyng the various cellular processes that control ageing. These processes such as autophagy, mitochondrial dysfunction, inflammation, oxidative stress, epigenetic changes, DNA disorders and alterations in Ca(2+) and reactive oxygen species (ROS) signalling are all known to be regulated by vitamin D...
November 15, 2017: Journal of Physiology
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