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https://www.readbyqxmd.com/read/28063332/metabolomics-a-potential-way-to-know-the-role-of-vitamin-d-on-multiple-sclerosis
#1
REVIEW
Diego Luque-Córdoba, María D Luque de Castro
The literature about the influence of vitamin D on multiple sclerosis (MS) is very controversial, possibly as a result of the way through which the research on the subject has been conducted. The studies developed so far have been focused exclusively on gene expression: the effect of a given vitamin D metabolite on target receptors. The influence of the vitamin D status (either natural or after supplementation) on MS has been studied by measurement of the 25 monohydroxylated metabolite (also known as circulating form), despite the 1,25 dihydroxylated metabolite is considered the active form...
December 29, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28063054/high-dimensional-cytometry-of-central-nervous-system-leukocytes-during-neuroinflammation
#2
Dunja Mrdjen, Felix J Hartmann, Burkhard Becher
Autoimmune diseases like multiple sclerosis (MS) develop from the activation and complex interactions of a wide network of immune cells, which penetrate the central nervous system (CNS) and cause tissue damage and neurological deficits. Experimental autoimmune encephalomyelitis (EAE) is a model used to study various aspects of MS, including the infiltration of autoaggressive T cells and pathogenic, inflammatory myeloid cells into the CNS. Various signature landscapes of immune cell infiltrates have proven useful in shedding light on the causes of specific EAE symptoms in transgenic mice...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28056806/suppression-of-experimental-autoimmune-encephalomyelitis-by-ultraviolet-light-is-not-mediated-by-isomerization-of-urocanic-acid
#3
Amy A Irving, Steven J Marling, Lori A Plum, Hector F DeLuca
BACKGROUND: Ultraviolet B irradiation confers strong resistance against experimental autoimmune encephalomyelitis, a model of multiple sclerosis. This protection by ultraviolet B is independent of vitamin D production but causes isomerization of urocanic acid, a naturally occurring immunosuppressant. METHODS: To determine whether UCA isomerization from trans to cis is responsible for the protection against experimental autoimmune encephalomyelitis afforded by ultraviolet B, trans- or cis-urocanic acid was administered to animals and their disease progression was monitored...
January 5, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28018358/endothelial-response-to-glucocorticoids-in-inflammatory-diseases
#4
REVIEW
Karolina A Zielińska, Laura Van Moortel, Ghislain Opdenakker, Karolien De Bosscher, Philippe E Van den Steen
The endothelium plays a crucial role in inflammation. A balanced control of inflammation requires the action of glucocorticoids (GCs), steroidal hormones with potent cell-specific anti-inflammatory properties. Besides the classic anti-inflammatory effects of GCs on leukocytes, recent studies confirm that endothelial cells also represent an important target for GCs. GCs regulate different aspects of endothelial physiology including expression of adhesion molecules, production of pro-inflammatory cytokines and chemokines, and maintenance of endothelial barrier integrity...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/28017242/physical-activity-sedentary-behavior-and-aerobic-capacity-in-persons-with-multiple-sclerosis
#5
Robert W Motl, Brian M Sandroff, Lara A Pilutti, Rachel E Klaren, Tracy Baynard, Bo Fernhall
BACKGROUND: There is substantial evidence that exercise training improves aerobic capacity among people with multiple sclerosis (MS), but less is known about the associations between physical activity and sedentary behaviors with aerobic capacity. OBJECTIVE: This study examined if objectively-measured moderate-to-vigorous (MVPA) and light (LPA) physical activity and sedentary behavior were associated with peak aerobic capacity (VO2peak) measured using an established protocol for conducting a maximal, incremental exercise test in persons with MS...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27984835/-phenomenology-and-clinical-relevance-of-the-flammer-syndrome
#6
K Konieczka, J Flammer
The Flammer syndrome (FS) describes the phenotype of people with a predisposition for an altered reaction of the blood vessels to stimuli like coldness, emotional stress or high altitude. Frequent symptoms are: cold hands and/or feet, low blood pressure, prolonged sleep onset time, reduced feeling of thirst, increased sensitivity to odour, pain, vibration and certain drugs. SF subjects are often ambitious and successful but also perfectionistic and sometimes brooding. Frequent signs are: altered gene expression, prolonged blood flow cessation in nailfold capillaroscopy after cold provocation, reduced autoregulation of ocular blood flow, and reduced vasodilation after stimulation with flickering light...
December 2016: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/27919483/a-systematic-review-of-anxiety-amongst-people-with-multiple-sclerosis
#7
REVIEW
Ellen Butler, Faith Matcham, Trudie Chalder
BACKGROUND: Multiple Sclerosis (MS) is a chronic neurological disease, which poses significant psychological challenges. The purpose of this systematic review was to identify factors that are associated with anxiety in people with MS (PwMS). It aimed to examine the strength of evidence for factors associated with anxiety symptoms and identify limitations of existing studies. METHOD AND RESULTS: One hundred and thirty one studies met inclusion criteria and were included in the review...
November 2016: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/27910985/uvb-radiation-vitamin-d-and-multiple-sclerosis
#8
H F DeLuca, L Plum
Acheson et al. (1960) observed an inverse relationship between sunlight exposure and the incidence of Multiple Sclerosis (MS). This led to the suggestion that increased levels of vitamin D caused by sunlight in some way suppresses MS. Further, super physiological doses of the metabolically active metabolite of vitamin D, i.e. 1α,25 dihydroxy vitamin D suppresses the animal model of MS i.e. experimental autoimmune encephalomyelitis (EAE). However, this response was accompanied by hypercalcemia. Hypercalcemia itself can suppress EAE...
December 2, 2016: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/27906081/vacht-overexpression-increases-acetylcholine-at-the-synaptic-cleft-and-accelerates-aging-of-neuromuscular-junctions
#9
Satoshi Sugita, Leland L Fleming, Caleb Wood, Sydney K Vaughan, Matheus P S M Gomes, Wallace Camargo, Ligia A Naves, Vania F Prado, Marco A M Prado, Cristina Guatimosim, Gregorio Valdez
BACKGROUND: Cholinergic dysfunction occurs during aging and in a variety of diseases, including amyotrophic lateral sclerosis (ALS). However, it remains unknown whether changes in cholinergic transmission contributes to age- and disease-related degeneration of the motor system. Here we investigated the effect of moderately increasing levels of synaptic acetylcholine (ACh) on the neuromuscular junction (NMJ), muscle fibers, and motor neurons during development and aging and in a mouse model for amyotrophic lateral sclerosis (ALS)...
October 5, 2016: Skeletal Muscle
https://www.readbyqxmd.com/read/27904491/intravenous-transplantation-of-mouse-embryonic-stem-cells-attenuates-demyelination-in-an-icr-outbred-mouse-model-of-demyelinating-diseases
#10
Kidsadagon Pringproa, Anucha Sathanawongs, Chananthida Khamphilai, Sarocha Sukkarinprom, Apichart Oranratnachai
Induction of demyelination in the central nervous system (CNS) of experimental mice using cuprizone is widely used as an animal model for studying the pathogenesis and treatment of demyelination. However, different mouse strains used result in different pathological outcomes. Moreover, because current medicinal treatments are not always effective in multiple sclerosis patients, so the study of exogenous cell transplantation in an animal model is of great importance. The aims of the present study were to establish an alternative ICR outbred mouse model for studying demyelination and to evaluate the effects of intravenous cell transplantation in the present developed mouse model...
October 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27903815/neonatal-vitamin-d-status-and-risk-of-multiple-sclerosis-a-population-based-case-control-study
#11
Nete Munk Nielsen, Kassandra L Munger, Nils Koch-Henriksen, David M Hougaard, Melinda Magyari, Kristian T Jørgensen, Marika Lundqvist, Jacob Simonsen, Tine Jess, Arieh Cohen, Egon Stenager, Alberto Ascherio
OBJECTIVE: As previous research has suggested that exposure to vitamin D insufficiency in utero may have relevance for the risk of multiple sclerosis (MS), we aimed to examine the direct association between level of neonatal vitamin D and risk of MS. METHODS: We carried out a matched case-control study. Dried blood spots samples (DBSS) belonging to 521 patients with MS were identified in the Danish Newborn Screening Biobank. For every patient with MS, 1-2 controls with the same sex and birth date were retrieved from the Biobank (n = 972)...
January 3, 2017: Neurology
https://www.readbyqxmd.com/read/27899552/prognostic-value-of-free-light-chains-lambda-and-kappa-in-early-multiple-sclerosis
#12
Margarete M Voortman, Tatjana Stojakovic, Lukas Pirpamer, Margit Jehna, Christian Langkammer, Hubert Scharnagl, Markus Reindl, Stefan Ropele, Thomas Seifert-Held, Juan-Jose Archelos, Siegrid Fuchs, Christian Enzinger, Franz Fazekas, Michael Khalil
BACKGROUND: Cerebrospinal fluid (CSF) immunoglobulin free light chains (FLC) have been suggested as quantitative alternative to oligoclonal bands (OCB) in the diagnosis of multiple sclerosis (MS). However, little is known on their role in predicting clinical and paraclinical disease progression, particularly in early stages. OBJECTIVE: To assess the prognostic value of FLC in OCB-positive patients with clinically isolated syndrome (CIS) suggestive of MS and early MS...
November 29, 2016: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/27876126/regular-sun-exposure-benefits-health
#13
H J van der Rhee, E de Vries, J W Coebergh
Since it was discovered that UV radiation was the main environmental cause of skin cancer, primary prevention programs have been started. These programs advise to avoid exposure to sunlight. However, the question arises whether sun-shunning behaviour might have an effect on general health. During the last decades new favourable associations between sunlight and disease have been discovered. There is growing observational and experimental evidence that regular exposure to sunlight contributes to the prevention of colon-, breast-, prostate cancer, non-Hodgkin lymphoma, multiple sclerosis, hypertension and diabetes...
December 2016: Medical Hypotheses
https://www.readbyqxmd.com/read/27854301/optical-coherence-tomography-and-magnetic-resonance-imaging-in-multiple-sclerosis-and-neuromyelitis-optica-spectrum-disorder
#14
REVIEW
Praveena Manogaran, James V M Hanson, Elisabeth D Olbert, Christine Egger, Carla Wicki, Christina Gerth-Kahlert, Klara Landau, Sven Schippling
Irreversible disability in multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD) is largely attributed to neuronal and axonal degeneration, which, along with inflammation, is one of the major pathological hallmarks of these diseases. Optical coherence tomography (OCT) is a non-invasive imaging tool that has been used in MS, NMOSD, and other diseases to quantify damage to the retina, including the ganglion cells and their axons. The fact that these are the only unmyelinated axons within the central nervous system (CNS) renders the afferent visual pathway an ideal model for studying axonal and neuronal degeneration in neurodegenerative diseases...
November 15, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27854261/taking-advantage-of-nature-s-gift-can-endogenous-neural-stem-cells-improve-myelin-regeneration
#15
REVIEW
Rainer Akkermann, Janusz Joachim Jadasz, Kasum Azim, Patrick Küry
Irreversible functional deficits in multiple sclerosis (MS) are directly correlated to axonal damage and loss. Neurodegeneration results from immune-mediated destruction of myelin sheaths and subsequent axonal demyelination. Importantly, oligodendrocytes, the myelinating glial cells of the central nervous system, can be replaced to some extent to generate new myelin sheaths. This endogenous regeneration capacity has so far mainly been attributed to the activation and recruitment of resident oligodendroglial precursor cells...
November 14, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27849576/two-familial-als-proteins-function-in-prevention-repair-of-transcription-associated-dna-damage
#16
Sarah J Hill, Daniel A Mordes, Lisa A Cameron, Donna S Neuberg, Serena Landini, Kevin Eggan, David M Livingston
Amyotrophic lateral sclerosis (ALS) is a progressive motor neuron dysfunction disease that leads to paralysis and death. There is currently no established molecular pathogenesis pathway. Multiple proteins involved in RNA processing are linked to ALS, including FUS and TDP43, and we propose a disease mechanism in which loss of function of at least one of these proteins leads to an accumulation of transcription-associated DNA damage contributing to motor neuron cell death and progressive neurological symptoms...
November 29, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27848954/myelinosome-formation-represents-an-early-stage-of-oligodendrocyte-damage-in-multiple-sclerosis-and-its-animal-model
#17
Elisa Romanelli, Doron Merkler, Aleksandra Mezydlo, Marie-Theres Weil, Martin S Weber, Ivana Nikić, Stephanie Potz, Edgar Meinl, Florian E H Matznick, Mario Kreutzfeldt, Alexander Ghanem, Karl-Klaus Conzelmann, Imke Metz, Wolfgang Brück, Matthew Routh, Mikael Simons, Derron Bishop, Thomas Misgeld, Martin Kerschensteiner
Oligodendrocyte damage is a central event in the pathogenesis of the common neuroinflammatory condition, multiple sclerosis (MS). Where and how oligodendrocyte damage is initiated in MS is not completely understood. Here, we use a combination of light and electron microscopy techniques to provide a dynamic and highly resolved view of oligodendrocyte damage in neuroinflammatory lesions. We show that both in MS and in its animal model structural damage is initiated at the myelin sheaths and only later spreads to the oligodendrocyte cell body...
November 16, 2016: Nature Communications
https://www.readbyqxmd.com/read/27846293/assessment-of-intrathecal-free-light-chain-synthesis-comparison-of-different-quantitative-methods-with-the-detection-of-oligoclonal-free-light-chains-by-isoelectric-focusing-and-affinity-mediated-immunoblotting
#18
David Zeman, Pavlína Kušnierová, Zdeněk Švagera, František Všianský, Monika Byrtusová, Pavel Hradílek, Barbora Kurková, Olga Zapletalová, Vladimír Bartoš
OBJECTIVES: We aimed to compare various methods for free light chain (fLC) quantitation in cerebrospinal fluid (CSF) and serum and to determine whether quantitative CSF measurements could reliably predict intrathecal fLC synthesis. In addition, we wished to determine the relationship between free kappa and free lambda light chain concentrations in CSF and serum in various disease groups. METHODS: We analysed 166 paired CSF and serum samples by at least one of the following methods: turbidimetry (Freelite™, SPAPLUS), nephelometry (N Latex FLC™, BN ProSpec), and two different (commercially available and in-house developed) sandwich ELISAs...
2016: PloS One
https://www.readbyqxmd.com/read/27823573/the-sphingosine-1-phosphate-signaling-pathway-in-epilepsy-a-possible-role-for-the-immunomodulator-drug-fingolimod-in-epilepsy-treatment
#19
Antonio Leo, Rita Citraro, Rosario Marra, Ernesto Palma, Eugenio Donato Di Paola, Andrew Constanti, Giovambattista De Sarro, Emilio Russo
It is currently known that erythrocytes are the major source of sphingosine 1-phosphate (S1P) in the body. S1P acts both extracellularly as a cellular mediator and intracellularly as an important second messenger molecule. Its effects are mediated by interaction with five specific types of G protein-coupled S1P receptor. Fingolimod, is a recognized modulator of S1P receptors, and is the first orally active disease-modifying therapy that has been approved for the treatment of multiple sclerosis. Magnetic resonance imaging data suggest that fingolimod may be effective in multiple sclerosis MS by preventing blood-brain barrier disruption and brain atrophy...
November 4, 2016: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/27813134/establishment-and-characterization-of-a-novel-hodgkin-lymphoma-cell-line-am-hlh-carrying-the-epstein-barr-virus-genome-integrated-into-the-host-chromosome
#20
Masahiko Hayashida, Masanori Daibata, Erika Tagami, Takahiro Taguchi, Fumiyo Maekawa, Kayo Takeoka, Katsuhiro Fukutsuka, Daiki Shimomura, Takamasa Hayashi, Yoshinori Iwatani, Hitoshi Ohno
We describe the establishment and characterization of a cell line, AM-HLH, obtained from a patient with Epstein-Barr virus-positive (EBV(+) ) nodular sclerosis-type Hodgkin lymphoma (HL). The cells were positive for CD2 and CD30 and negative for CD15. The immunoglobulin heavy- and κ light-chain genes were rearranged. The karyotype was of the triploid range. Southern blotting using the EBV terminal repeat probe detected 3 hybridizing bands that were identical to those of the parental HL material. The cells expressed EBV-encoded RNAs as well as latent genes (EBNA1, EBNA2, LMP1, and LMP2A) and lytic genes (BZLF1 and BALF2)...
November 4, 2016: Hematological Oncology
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