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https://www.readbyqxmd.com/read/29679574/evidence-of-demyelination-in-mild-cognitive-impairment-and-dementia-using-a-direct-and-specific-magnetic-resonance-imaging-measure-of-myelin-content
#1
Mustapha Bouhrara, David A Reiter, Christopher M Bergeron, Linda M Zukley, Luigi Ferrucci, Susan M Resnick, Richard G Spencer
INTRODUCTION: We investigated brain demyelination in aging, mild cognitive impairment (MCI), and dementia using magnetic resonance imaging of myelin. METHODS: Brains of young and old controls and old subjects with MCI, Alzheimer's disease, or vascular dementia were scanned using our recently developed myelin water fraction (MWF) mapping technique, which provides greatly improved accuracy over previous comparable methods. Maps of MWF, a direct and specific myelin measure, and relaxation times and magnetization transfer ratio, indirect and nonspecific measures, were constructed...
April 18, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29676479/sulfatide-isoform-pattern-in-cerebrospinal-fluid-discriminates-progressive-ms-from-relapsing-remitting-ms
#2
Lenka Novakova, Avadhesh Kumar Singh, Clas Malmeström, Henrik Zetterberg, Marcus Ståhlman, Markus Axelsson, Martin Adiels, Jan Borén, Jan Lycke, Susanna L Cardell, Maria Blomqvist
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system (CNS). Several biomarkers including proteins and lipids have been reported in MS cerebrospinal fluid (CSF), reflecting different aspects of the pathophysiology particularly of relapsing-remitting MS (RRMS). Sulfatide, abundant in the myelin sheath and a proposed target for autoimmune attack in MS, has been reported altered in MS CSF. Here, we investigated the potential of CSF sulfatide and its isoforms as biomarkers in MS...
April 20, 2018: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29675203/lipid-biochemical-changes-detected-in-normal-appearing-white-matter-of-chronic-multiple-sclerosis-by-spectral-coherent-raman-imaging
#3
K W C Poon, C Brideau, R Klaver, G J Schenk, J J Geurts, P K Stys
Multiple sclerosis (MS) exhibits demyelination, inflammatory infiltration, axonal degeneration, and gliosis, affecting widespread regions of the central nervous system (CNS). While white matter MS lesions have been well characterized pathologically, evidence indicates that the MS brain may be globally altered, with subtle abnormalities found in grossly normal appearing white matter (NAWM). These subtle changes are difficult to investigate by common methods such as histochemical stains and conventional magnetic resonance imaging...
February 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29673579/new-insights-into-the-pathophysiology-of-primary-hemifacial-spasm
#4
J-P Lefaucheur
Primary hemifacial spasm (pHFS) is due to a benign compression of the facial motor nerve by an offending vessel, leading to increased nerve excitability. Facial nerve hyperexcitability presents two different aspects. First, there is a spontaneous and ectopic generation of action potentials on the incriminated nerve and then this ectopic impulse can propagate and spread "laterally" from one facial nerve branch to another. This results in spontaneous and synkinetic spasms affecting one hemiface. Although the increase in excitability certainly concerns the nucleus of the facial motor nerve in the brainstem, it seems unlikely that the primary origin of this hyperexcitability and the associated phenomenon of lateral spreading strictly originate at the nuclear level...
April 16, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29673575/classification-and-diagnostic-criteria-for-demyelinating-diseases-of-the-central-nervous-system-where-do-we-stand-today
#5
REVIEW
G Mathey, M Michaud, S Pittion-Vouyovitch, M Debouverie
The diagnosis of multiple sclerosis (MS) and other demyelinating diseases of the central nervous system is challenging, and although the currently available biological and imaging tools offer considerable support to physicians, these tools often fail to provide a simple and final answer at the time of a first event. Thus, sets of diagnostic criteria have been published and tested on patient cohorts, and are now used in clinical trials and in daily clinical practice. These criteria have evolved over time to take into account physicians' and patients' needs, along with emerging paraclinical tests...
April 16, 2018: Revue Neurologique
https://www.readbyqxmd.com/read/29673573/atypical-inflammatory-demyelinating-lesions-and-atypical-multiple-sclerosis
#6
REVIEW
X Ayrignac, C Carra-Dallière, P Labauge
Atypical idiopathic inflammatory demyelinating disorders (IIDDs) of the brain have long been known to be disorders closely related to multiple sclerosis (MS), despite having distinctive clinical and radiological characteristics. Originally, they mostly corresponded to acute-onset variants of MS that classically had poor prognoses, such as Baló's concentric sclerosis, Marburg variant of MS and Schilder's disease, and their relationship with MS was based on their shared pathological findings and the co-occurrence of these variants in patients with typical MS...
April 16, 2018: Revue Neurologique
https://www.readbyqxmd.com/read/29670818/fingolimod-promotes-blood-nerve-barrier-properties-in-vitro
#7
Hideaki Nishihara, Toshihiko Maeda, Yasuteru Sano, Maho Ueno, Nana Okamoto, Yukio Takeshita, Fumitaka Shimizu, Michiaki Koga, Takashi Kanda
Objective: The main effect of fingolimod is thought to be functional antagonism of lymphocytic S1P1 receptors and the prevention of lymphocyte egress from lymphoid tissues, thereby reducing lymphocyte infiltration into the nervous system. However, a growing number of reports suggest that fingolimod also has a direct effect on several cell types in the nervous system. Although we previously reported that fingolimod enhances blood-brain barrier (BBB) functions, there have been no investigations regarding the blood-nerve barrier (BNB)...
April 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29670575/mog-igg-associated-optic-neuritis-encephalitis-and-myelitis-lessons-learned-from-neuromyelitis-optica-spectrum-disorder
#8
REVIEW
Giordani Rodrigues Dos Passos, Luana Michelli Oliveira, Bruna Klein da Costa, Samira Luisa Apostolos-Pereira, Dagoberto Callegaro, Kazuo Fujihara, Douglas Kazutoshi Sato
Antibodies against myelin oligodendrocyte glycoprotein (MOG-IgG) have been found in some cases diagnosed as seronegative neuromyelitis optica spectrum disorder (NMOSD). MOG-IgG allowed the identification of a subgroup with a clinical course distinct from that of NMOSD patients who are seropositive for aquaporin-4-IgG antibodies. MOG-IgG is associated with a wider clinical phenotype, not limited to NMOSD, with the majority of cases presenting with optic neuritis (ON), encephalitis with brain demyelinating lesions, and/or myelitis...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29670565/the-efficacy-of-psychological-interventions-for-managing-fatigue-in-people-with-multiple-sclerosis-a-systematic-review-and-meta-analysis
#9
Aung Zaw Zaw Phyo, Thibaut Demaneuf, Alysha M De Livera, George A Jelinek, Chelsea R Brown, Claudia H Marck, Sandra L Neate, Keryn L Taylor, Taylor Mills, Emily O'Kearney, Amalia Karahalios, Tracey J Weiland
Background: Multiple sclerosis (MS) is a complex, demyelinating disease of the central nervous system. Fatigue is commonly reported by people with MS (PwMS). MS-related fatigue severely affects daily activities, employment, socioeconomic status, and quality of life. Objective: We conducted this systematic review and meta-analysis to determine whether psychological interventions are effective in managing fatigue in PwMS. Data sources: We performed systematic searches of Medline, EMBASE, PsycINFO, and CINAHL to identify relevant articles published from database inception to April 5, 2017...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29670463/combination-treatment-of-c16-peptide-and-angiopoietin-1-alleviates-neuromyelitis-optica-in-an-experimental-model
#10
Yuanyuan Zhang, Kewei Tian, Hong Jiang, Beibei Wang, Shu Han
Neuromyelitis optica (NMO) is an autoimmune inflammatory demyelinating disease that mainly affects the spinal cord and optic nerve, causing blindness and paralysis in some individuals. Moreover, NMO may cause secondary complement-dependent cytotoxicity (CDC), leading to oligodendrocyte and neuronal damage. In this study, a rodent NMO model, showing typical NMO pathogenesis, was induced with NMO-IgG from patient serum and human complement. We then tested whether the combination of C16, an α v β 3 integrin-binding peptide, and angiopoietin-1 (Ang1), a member of the endothelial growth factor family, could alleviate NMO in the model...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29667130/beneficial-effects-of-the-calcium-channel-blocker-ctk-01512-2-in-a-mouse-model-of-multiple-sclerosis
#11
Rodrigo B M Silva, Samuel Greggio, Gianina T Venturin, Jaderson C da Costa, Marcus V Gomez, Maria M Campos
Voltage-gated calcium channels (VGCCs) play a critical role in neuroinflammatory diseases, such as multiple sclerosis (MS). CTK 01512-2 is a recombinant version of the peptide Phα1β derived from the spider Phoneutria nigriventer, which inhibits N-type VGCC/TRPA1-mediated calcium influx. We investigated the effects of this molecule in the mouse model of experimental autoimmune encephalomyelitis (EAE). The effects of CTK 01512-2 were compared to those displayed by ziconotide-a selective N-type VGCC blocker clinically used for chronic pain-and fingolimod-a drug employed for MS treatment...
April 17, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29665426/human-papillomavirus-vaccine-and-demyelinating-diseases-a-systematic-review-and-meta-analysis
#12
Julie Mouchet, Francesco Salvo, Emanuel Raschi, Elisabetta Poluzzi, Ippazio Cosimo Antonazzo, Fabrizio De Ponti, Bernard Bégaud
BACKGROUND: Approved in 2006, human papillomavirus (HPV) vaccines were initially targeted for girls aged 9-14 years. Although the safety of these vaccines has been monitored through post-licensure surveillance programmes, cases of neurological events have been reported worldwide. PURPOSE: The present study aimed to assess the risk of developing demyelination after HPV immunization by meta-analysing risk estimates from pharmacoepidemiologic studies. DATA SOURCES: A systematic review was conducted in Medline, Embase, ISI Web of Science and the Cochrane Library from inception to 10 May 2017, without language restriction...
April 14, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29664964/monitoring-for-myelopathic-progression-with-multiparametric-quantitative-mri
#13
Allan R Martin, Benjamin De Leener, Julien Cohen-Adad, Sukhvinder Kalsi-Ryan, David W Cadotte, Jefferson R Wilson, Lindsay Tetreault, Aria Nouri, Adrian Crawley, David J Mikulis, Howard Ginsberg, Eric M Massicotte, Michael G Fehlings
BACKGROUND: Patients with mild degenerative cervical myelopathy (DCM) are often managed non-operatively, and surgery is recommended if neurological progression occurs. However, detection of progression is often subjective. Quantitative MRI (qMRI) directly measures spinal cord (SC) tissue changes, detecting axonal injury, demyelination, and atrophy. This longitudinal study compared multiparametric qMRI with clinical measures of progression in non-operative DCM patients. METHODS: 26 DCM patients were followed...
2018: PloS One
https://www.readbyqxmd.com/read/29663848/evaluation-of-the-association-between-sexual-dysfunction-and-demyelinating-plaque-location-and-number-in-female-multiple-sclerosis-patients
#14
Volkan Solmaz, Hatice Kose Ozlece, Aydın Him, Ayfer Güneş, Christian Cordano, Durdane Aksoy, Yahya Çelik
Purpose To investigate the frequency of sexual dysfunction (SD) in female multiple sclerosis (MS) patients and to explore its association with the location and number of demyelinating lesions. Material and Methods We evaluated 42 female patients and 41 healthy subjects. All patients underwent neurological examination and 1.5 T brain and full spinal MRI. All subjects completed the female sexual function index (FSFI), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), and Short-Form 36 Quality of Life Scale (SF-36)...
April 17, 2018: Neurological Research
https://www.readbyqxmd.com/read/29662531/cystic-brain-metastases-in-alk-rearranged-non-small-cell-lung-cancer
#15
REVIEW
Guilherme Nader Marta, Renata Rodrigues da Cunha Colombo Bonadio, Renata Eiras Martins, Henrique Bortot Zuppani, Gilberto de Castro
The central nervous system (CNS) is a common site of disease progression in patients with non-small-cell lung cancer (NSCLC) with anaplastic lymphoma kinase (ALK)-rearrangement treated with crizotinib. Cystic brain metastases (CBM) have been recently identified as one possible variant of this disease. An illustrative case report is presented along with a literature review performed in order to track relevant papers about CBM in ALK-rearranged NSCLC, including possible pathophysiology, differential diagnosis and treatment options for this condition...
2018: Ecancermedicalscience
https://www.readbyqxmd.com/read/29662171/fatal-demyelinating-disease-is-induced-by-monocyte-derived-macrophages-in-the-absence-of-tgf-%C3%AE-signaling
#16
Harald Lund, Melanie Pieber, Roham Parsa, David Grommisch, Ewoud Ewing, Lara Kular, Jinming Han, Keying Zhu, Jik Nijssen, Eva Hedlund, Maria Needhamsen, Sabrina Ruhrmann, André Ortlieb Guerreiro-Cacais, Rasmus Berglund, Maria J Forteza, Daniel F J Ketelhuth, Oleg Butovsky, Maja Jagodic, Xing-Mei Zhang, Robert A Harris
The cytokine transforming growth factor-β (TGF-β) regulates the development and homeostasis of several tissue-resident macrophage populations, including microglia. TGF-β is not critical for microglia survival but is required for the maintenance of the microglia-specific homeostatic gene signature1,2 . Under defined host conditions, circulating monocytes can compete for the microglial niche and give rise to long-lived monocyte-derived macrophages residing in the central nervous system (CNS)3-5 . Whether monocytes require TGF-β for colonization of the microglial niche and maintenance of CNS integrity is unknown...
April 16, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29661538/an-unusual-case-of-anti-mog-cns-demyelination-with-concomitant-mild-anti-nmdar-encephalitis
#17
Jiajia Zhou, Winwen Tan, Suyin Elaine Tan, Jing Hu, Zhongqin Chen, Kang Wang
We report the case of a patient who presented with progressive unsteadiness and narcoleptic attacks followed by behavioral change and psychosis, without visual disturbances or seizures. MRI revealed multiple areas of fluid attenuation inversion recovery (FLAIR) high-intensity lesions involving the cerebellum, brainstem, thalamus and third ventricular peri-ependymal region consistent with demyelination. Both the serum myelin oligodendrocyte glycoprotein-antibodies (MOG-Abs) and cerebral spinal fluid (CSF) anti-N-methyl-d-as-partate receptor (NMDAR) antibodies were positive using transfected cell based assays...
April 6, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29659554/demyelination-in-multiple-sclerosis-reprogramming-energy-metabolism-and-potential-ppar%C3%AE-agonist-treatment-approaches
#18
REVIEW
Alexandre Vallée, Yves Lecarpentier, Rémy Guillevin, Jean-Noël Vallée
Demyelination in multiple sclerosis (MS) cells is the site of several energy metabolic abnormalities driven by dysregulation between the opposed interplay of peroxisome proliferator-activated receptor γ (PPARγ) and WNT/β-catenin pathways. We focus our review on the opposing interactions observed in demyelinating processes in MS between the canonical WNT/β-catenin pathway and PPARγ and their reprogramming energy metabolism implications. Demyelination in MS is associated with chronic inflammation, which is itself associated with the release of cytokines by CD4⁺ Th17 cells, and downregulation of PPARγ expression leading to the upregulation of the WNT/β-catenin pathway...
April 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29658863/swallow-syncope-after-whiplash-neck-injury
#19
Luka Lipar, Pia Vovk, Tereza Weiss, Jus Ksela
Swallow syncope is a rare dysautonomic syndrome characterized by temporary loss of consciousness upon swallowing solid foods or liquids, displaying primarily in individuals with an underlying structural or functional esophageal or cardiac pathology. However, the evidence also suggests that isolated vagal dysfunction or abnormal reactions of esophageal mechanoreceptors after mechanical irritation, demyelination, or trauma can potentially evoke  a cardioinhibitory response or vasodepression upon swallowing. We present a case of a 49-year-old otherwise healthy female patient who developed swallow syncope two weeks after whiplash neck injury acquired in a rear-end collision...
March 5, 2018: Heart Surgery Forum
https://www.readbyqxmd.com/read/29658460/-neuroprotective-effects-of-oligodendrocyte-precursor-cells-on-white-matter-damage-in-preterm-infants
#20
Yan Yue, Li Zhang, Yi Qu, De-Zhi Mu
White matter damage, characterized by demyelination due to the damage of oligodendrocyte precursor cells (OPCs), is the most common type of brain damage in preterm infants. Survivors are often subject to long-term neurodevelopmental sequelae because of the lack of effective treatment. In recent years, it has been found that cell transplantation has the potential for the treatment of white matter damage. OPCs are frequently used cells in cell transplantation therapy. With abilities of migration and myelinization, OPCs are the best seed cells for the treatment of white matter damage...
April 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
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