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Oxidative stress in multiple sclerosis

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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...
September 26, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28939293/dose-dependent-s-allyl-cysteine-ameliorates-multiple-sclerosis-disease-related-pathology-by-reducing-oxidative-stress-and-biomarkers-of-dysbiosis-in-experimental-autoimmune-encephalomyelitis
#8
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 oligodendrocyte 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 lipopolysaccharide membrane bacteria (LPS)...
September 19, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28938101/exposure-to-particulate-matter-air-pollution-and-risk-of-multiple-sclerosis-in-two-large-cohorts-of-us-nurses
#9
N Palacios, K L Munger, K C Fitzgerald, J E Hart, T Chitnis, A Ascherio, F Laden
BACKGROUND: Air pollution is thought to raise the risk of neurological disease by promoting neuroinflammation, oxidative stress, glial activation and cerebrovascular damage. Multiple Sclerosis is a common auto-immune disorder, primarily affecting young women. We conducted, to a large prospective study of particulate matter (PM) exposure and multiple sclerosis (MS) risk in two prospective cohorts of women: the Nurses Health Study (NHS) and the Nurses Health Study II (NHS II). METHODS: Cumulative average exposure to different size fractions of PM up to the onset of MS was estimated using spatio-temporal models...
September 19, 2017: Environment International
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/28904554/plants-derived-neuroprotective-agents-cutting-the-cycle-of-cell-death-through-multiple-mechanisms
#11
REVIEW
Taiwo Olayemi Elufioye, Tomayo Ireti Berida, Solomon Habtemariam
Neuroprotection is the preservation of the structure and function of neurons from insults arising from cellular injuries induced by a variety of agents or neurodegenerative diseases (NDs). The various NDs including Alzheimer's, Parkinson's, and Huntington's diseases as well as amyotropic lateral sclerosis affect millions of people around the world with the main risk factor being advancing age. Each of these diseases affects specific neurons and/or regions in the brain and involves characteristic pathological and molecular features...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28899203/an-overview-of-the-advantages-of-keap1-nrf2-system-activation-during-inflammatory-disease-treatment
#12
Nadine Keleku-Lukwete, Mikiko Suzuki, Masayuki Yamamoto
Inflammation can be defined as a protective immune response against harmful exogenous and endogenous stimuli. Nevertheless, prolonged or autoimmune inflammatory response are likely to cause pathological states associated with a production of inflammation-associated molecules along with ROS (reactive oxygen species). KEAP1-NRF2 (Kelch-like ECH-associated protein 1-Nuclear factor erythroid 2-related factor 2) signaling provides a cell protection mechanism against oxidative insults when endogenous stress defense mechanisms are imbalanced...
September 13, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28894553/effect-of-alpha-lipoic-acid-on-asymmetric-dimethylarginine-and-disability-in-multiple-sclerosis-patients-a-randomized-clinical-trial
#13
Mohammad Khalili, Madjid Soltani, Shirin Amiri Moghadam, Parvin Dehghan, Amirreza Azimi, Omid Abbaszadeh
BACKGROUND: Multiple Sclerosis (MS) is an inflammatory and demyelinating disease of the central nervous system. Oxidative stress plays a major role in the onset and progression of MS. Asymmetric dimethylarginine (ADMA) formation is dependent on oxidative stress status. OBJECTIVE: We examined whether alpha-lipoic acid (ALA) as a potent antioxidant could improve the Expanded Disability Status Scale (EDSS) and decrease plasma level of ADMA in multiple sclerosis patients...
July 2017: Electronic Physician
https://www.readbyqxmd.com/read/28882588/ask1-in-neurodegeneration
#14
REVIEW
Xiaoli Guo, Kazuhiko Namekata, Atsuko Kimura, Chikako Harada, Takayuki Harada
Neurodegenerative diseases (NDDs) such as glaucoma, multiple sclerosis (MS), Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), and Huntington's disease (HD) are characterized by the progressive loss of neurons, causing irreversible damage to patients. Longer lifespans may be leading to an increase in the number of people affected by NDDs worldwide. Among the pathways strongly impacting the pathogenesis of NDDs, oxidative stress, a condition that occurs because of an imbalance in oxidant and antioxidant levels, has been known to play a vital role in the pathophysiology of NDDs...
September 1, 2017: Advances in Biological Regulation
https://www.readbyqxmd.com/read/28875857/is-there-a-link-between-vitamin-b-and-multiple-sclerosis
#15
Natalie Nemazannikova, Kathleen Mikkelsen, Lily Stojanovska, Gregory L Blatch, Vasso Apostolopoulos
BACKGROUND: Damage to the myelin sheath (demyelination) is one of the main manifestations of multiple sclerosis (MS). Interestingly, both MS and vitamin B deficiency results in severe myelin degeneration that leads to loss in neuronal signal transmission. OBJECTIVE: Deficiency in vitamin B complex vary, although common symptoms include fatigue, increased oxidative stress, inflammation and demyelination. In particular, vitamin B12 (cobalamin) has had increased attention for its role in the methylation process, involvement in myelination and re-myelination, and reversal of MS symptoms...
September 6, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/28872660/fabricating-plga-microparticles-with-high-loads-of-the-small-molecule-antioxidant-n-acetylcysteine-that-rescue-oligodendrocyte-progenitor-cells-from-oxidative-stress
#16
Nicholas P Murphy, Kyle J Lampe
Reactive oxygen species (ROS), encompassing all oxygen radical or non-radical oxidizing agents, play key roles in disease progression. Controlled delivery of antioxidants is therapeutically relevant in such oxidant-stressed environments. Encapsulating small hydrophilic molecules into hydrophobic polymer microparticles via traditional emulsion methods has long been a challenge due to rapid mass transport of small molecules out of particle pores. We have developed a simple alteration to the existing water-in-oil-in-water (W/O/W) drug encapsulation method that dramatically improves loading efficiency: doping external water phases with drug to mitigate drug diffusion out of the particle during fabrication...
September 5, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28863941/potential-role-of-ferric-hemoglobin-in-ms-pathogenesis-effects-of-oxidative-stress-and-extracellular-methemoglobin-or-its-degradation-products-on-myelin-components
#17
Vladimir V Bamm, Mary E L Henein, Shannon L J Sproul, Danielle K Lanthier, George Harauz
There is a well-documented relationship between cerebral vasculature and multiple sclerosis (MS) lesions: abnormal accumulations of iron have been found in the walls of the dilated veins in cerebral MS plaques. The source of this iron is unknown, but could be related to the recognized phenomenon of capillary and venous hemorrhages leading to blood extravasation. In turn, hemorrhaging leading to hemolysis results in extracellular release of hemoglobin, a reactive molecule that could induce local oxidative stress, inflammation, and tissue damage...
August 31, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28857721/unexpected-additive-effects-of-minocycline-and-hydroxychloroquine-in-models-of-multiple-sclerosis-prospective-combination-treatment-for-progressive-disease
#18
Simon Faissner, Yasamin Mahjoub, Manoj Mishra, Steffen Haupeltshofer, Jennifer Nancy Hahn, Ralf Gold, Marcus Koch, Luanne M Metz, Tamir Ben-Hur, V Wee Yong
BACKGROUND: Most multiple sclerosis (MS) patients succumb to a progressive phenotype. Continued lymphocyte activity in the brain, microglia-mediated injury, iron deposition, and oxidative stress are characteristics of progressive MS. OBJECTIVE: As minocycline and hydroxychloroquine have been shown to inhibit microglia, we evaluated their effects on other outcomes relevant for progression. METHODS: Medications were evaluated in culture and in mice with acute and chronic experimental autoimmune encephalomyelitis (EAE)...
August 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28844667/thioredoxin-1-redox-factor-1-and-thioredoxin-interacting-protein-mrnas-are-differentially-expressed-in-multiple-sclerosis-patients-exposed-and-non-exposed-to-interferon-and-immunosuppressive-treatments
#19
Elham Mahmoudian, Ahad Khalilnezhad, Kurosh Gharagozli, Davar Amani
BACKGROUND: Oxidative stress is closely linked to inflammation in neurodegenerative diseases. We aimed to investigate the expression of redox system genes in Multiple Sclerosis (MS) patients either exposed or not exposed to conventional treatments. METHODS: Forty-four MS patients were divided into three groups: newly diagnosed (Group 1), receiving interferon (Group 2) and receiving immunosuppressive drugs (Group 3). Also, 15 healthy controls were enrolled. The mRNA expression of TRX1, TXNRD1, TRX2, TXNRD2, TXNIP, and APEX1 genes in peripheral blood mononuclear cells (PBMCs) was assessed by relative quantitative real-time PCR...
November 15, 2017: Gene
https://www.readbyqxmd.com/read/28842429/anti-inflammatory-effects-of-hypoxic-preconditioned-human-periodontal-ligament-cells-secretome-in-an-experimental-model-of-multiple-sclerosis-a-key-role-of-il-37
#20
Sabrina Giacoppo, Soundara Rajan Thangavelu, Francesca Diomede, Placido Bramanti, Pio Conti, Oriana Trubiani, Emanuela Mazzon
Recent research has widely investigated the anti-inflammatory effects of mesenchymal stem cells and their secretory products, termed secretome, in the treatment of multiple sclerosis (MS). The present study examined the capacity of the conditioned medium (CM) collected from human periodontal ligament cells under hypoxic condition medium (H-hPDLSCs-CM) to suppress experimental autoimmune encephalomyelitis (EAE), a murine model of MS. To induce EAE, female C57BL/6 mice were immunized with myelin oligodendroglial glycoprotein peptide35-55 At the onset of symptoms, H-hPDLSCs-CM was infused via the tail vein of mice...
August 23, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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