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https://www.readbyqxmd.com/read/28822986/insights-in-pathogenesis-of-multiple-sclerosis-nitric-oxide-may-induce-mitochondrial-dysfunction-of-oligodendrocytes
#1
Minghong Lan, Xiaoyi Tang, Jie Zhang, Zhongxiang Yao
Demyelinating diseases, such as multiple sclerosis (MS), are kinds of common diseases in the central nervous system (CNS), and originated from myelin loss and axonal damage. Oligodendrocyte dysfunction is the direct reason of demyelinating lesions in the CNS. Nitric oxide (NO) plays an important role in the pathological process of demyelinating diseases. Although the neurotoxicity of NO is more likely mediated by peroxynitrite rather than NO itself, NO can impair oligodendrocyte energy metabolism through mediating the damaging of mitochondrial DNA, mitochondrial membrane and mitochondrial respiratory chain complexes...
August 21, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28822119/five-questions-answered-a-review-of-autologous-hematopoietic-stem-cell-transplantation-for-the-treatment-of-multiple-sclerosis
#2
REVIEW
Harold L Atkins, Mark S Freedman
Multiple sclerosis (MS) is thought to be an autoimmune disease targeting the central nervous system leading to demyelination, and axonal and neuronal damage, resulting in progressive disability. More intensive therapies such as immunodepletion with hematopoietic stem-cell rescue are being used at a time prior to patients becoming irreversibly disabled. Over the last 15 years, there has been a shift away from using autologous hematopoietic stem-cell transplants (aHSCT) to treat patients with progressive MS, towards treating those with active inflammation and relapses...
August 18, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28822061/co-ultramicronized-palmitoylethanolamide-luteolin-facilitates-the-development-of-differentiating-and-undifferentiated-rat-oligodendrocyte-progenitor-cells
#3
Stephen D Skaper, Massimo Barbierato, Laura Facci, Mila Borri, Gabriella Contarini, Morena Zusso, Pietro Giusti
Oligodendrocytes, the myelin-producing cells of the central nervous system (CNS), have limited capability to bring about repair in chronic CNS neuroinflammatory demyelinating disorders such as multiple sclerosis (MS). MS lesions are characterized by a compromised pool of undifferentiated oligodendrocyte progenitor cells (OPCs) unable to mature into myelin-producing oligodendrocytes. An attractive strategy may be to replace lost OLs and/or promote their maturation. N-palmitoylethanolamine (PEA) is an endogenous fatty acid amide signaling molecule with anti-inflammatory and neuroprotective actions...
August 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28821749/dna-methylation-in-demyelinated-multiple-sclerosis-hippocampus
#4
Anthony M Chomyk, Christina Volsko, Ajai Tripathi, Sadie A Deckard, Bruce D Trapp, Robert J Fox, Ranjan Dutta
Multiple Sclerosis (MS) is an immune-mediated demyelinating disease of the human central nervous system (CNS). Memory impairments and hippocampal demyelination are common features in MS patients. Our previous data have shown that demyelination alters neuronal gene expression in the hippocampus. DNA methylation is a common epigenetic modifier of gene expression. In this study, we investigated whether DNA methylation is altered in MS hippocampus following demyelination. Our results show that mRNA levels of DNA methyltransferase were increased in demyelinated MS hippocampus, while de-methylation enzymes were decreased...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821276/inflammatory-demyelination-alters-subcortical-visual-circuits
#5
Sheila Espírito Santo Araújo, Henrique Rocha Mendonça, Natalie A Wheeler, Paula Campello-Costa, Kimberle M Jacobs, Flávia C A Gomes, Michael A Fox, Babette Fuss
BACKGROUND: Multiple sclerosis (MS) is an inflammatory demyelinating disease classically associated with axonal damage and loss; more recently, however, synaptic changes have been recognized as additional contributing factors. An anatomical area commonly affected in MS is the visual pathway; yet, changes other than those associated with inflammatory demyelination of the optic nerve, i.e., optic neuritis, have not been described in detail. METHODS: Adult mice were subjected to a diet containing cuprizone to mimic certain aspects of inflammatory demyelination as seen in MS...
August 18, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28820724/neurologic-complications-in-persons-with-hiv-infection-in-the-era-of-antiretroviral-therapy
#6
Dennis Kolson
Neurologic complications in persons with HIV infection are less severe in the era of potent antiretroviral therapy but remain highly prevalent. Prior to the use of antiretroviral therapy, opportunistic infections of the central nervous system (CNS) and CNS malignancy were common. Progressive multifocal leukoencephalopathy (PML), however, remains a diagnostic challenge in HIV-infected individuals, and no effective antiviral treatment for PML is currently available. Primary neurologic complications of acute HIV infection include aseptic meningitis and acute inflammatory demyelinating polyneuropathy...
July 2017: Topics in Antiviral Medicine
https://www.readbyqxmd.com/read/28820624/retinopathy-and-optic-atrophy-expanding-the-phenotypic-spectrum-of-pathogenic-variants-in-the-aars2-gene
#7
Jason H Peragallo, Stephanie Keller, Marjo S van der Knaap, Bruno P Soares, Suma P Shankar
BACKGROUND: Optic atrophy may be the sequela of optic nerve injury due to any insult, including isolated and syndromic genetic diseases. Alanyl-tRNA synthetase 2 (AARS2) pathogenic variants have been reported to cause leukodystrophy with ovarian failure, and cardiomyopathy (#615889) as well as combined oxidative phosphorylation deficiency-8 (#614096). We report a young child who presented with decreased vision due to optic atrophy and was found to harbor missense variants in the AARS2 gene expanding the phenotypic expression of the AARS2 gene...
August 18, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28820014/postinfectious-anti-myelin-oligodendrocyte-glycoprotein-antibody-positive-optic-neuritis-and-myelitis
#8
J P Vieira, J Sequeira, M J Brito
We report the case of a 9-year-old girl admitted with fever, headache, and a cerebrospinal fluid lymphocytic pleocytosis. Polymerase chain reaction was positive for human herpes virus 6. She subsequently developed ataxia and bilateral loss of vision. Magnetic resonance imaging (MRI) showed bilateral optic nerve lesions with extension to optic chiasm and a short-segment myelitis. Serologic studies were positive for Borrelia burgdorferi IgM. Anti-aquaporin 4 antibody was negative and anti-myelin oligodendrocyte glycoprotein antibody (MOG) positive...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28819716/neurological-complications-of-therapeutic-monoclonal-antibodies-trends-from-oncology-to-rheumatology
#9
REVIEW
Chandler Gill, Stasia Rouse, Ryan D Jacobson
PURPOSE OF REVIEW: This review is to describe the scope of neurological complications associated with monoclonal antibody-based therapies, applied across medical specialties, to demonstrate the common and rare neurological syndromes that may be encountered in clinical practice according to the therapeutic agent being receive, and to explain appropriate work-up, diagnosis, and management of drug complications, as supported by the literature. RECENT FINDINGS: The number of commercially available, evidence-based therapeutic monoclonal antibodies continues to expand...
August 17, 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28819062/nodes-paranodes-and-neuropathies
#10
REVIEW
Janev Fehmi, Steven S Scherer, Hugh J Willison, Simon Rinaldi
This review summarises recent evidence supporting the involvement of the specialised nodal and perinodal domains (the paranode and juxtaparanode) of myelinated axons in the pathology of acquired, inflammatory, peripheral neuropathies.The identification of new target antigens in the inflammatory neuropathies heralds a revolution in diagnosis, and has already begun to inform increasingly targeted and individualised therapies. Rapid progress in our basic understanding of the highly specialised nodal regions of peripheral nerves serves to strengthen the links between their unique microstructural identities, functions and pathologies...
August 17, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28816726/acute-inflammatory-demyelinating-polyradiculoneuropathy-secondary-to-ifosfamide
#11
Mahvish Muzaffar, Prashanti M Atluri, Darla Liles
No abstract text is available yet for this article.
August 8, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28815404/neurological-presentation-of-zika-virus-infection-beyond-the-perinatal-period
#12
REVIEW
Thomas De Broucker, Alexandra Mailles, Jean-Paul Stahl
PURPOSE OF REVIEW: Our purpose was to summarize the current knowledge about the neurological presentation of Zika virus infection after the perinatal period. Other Flaviviruses infections, such as West Nile virus (WNV) or Japanese encephalitis virus (JEV), can result in neuro-invasive disease such as myelitis, encephalitis, or meningitis. We aimed at describing the specificities of ZV neurological infection. RECENT FINDINGS: The recent outbreaks demonstrated clearly the neurotropism of ZV...
August 16, 2017: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/28813085/curcumin-decreases-astrocytic-reaction-after-gliotoxic-injury-in-the-rat-brainstem
#13
Eduardo Bondan, Carolina Cardoso, Maria de Fátima Martins
Recent studies have demonstrated that curcumin (Cur) has antioxidant, anti-inflammatory and anti-fibrotic effects. Ethidium bromide (EB) injections into the central nervous system (CNS) are known to induce local oligodendroglial and astrocytic loss, resulting in primary demyelination and neuroinflammation. Peripheral astrogliosis is seen around the injury site with increased immunoreactivity to glial fibrillary acidic protein (GFAP). This investigation aimed to evaluate the effect of Cur administration on astrocytic response following gliotoxic injury...
August 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28811143/nadph-oxidases-as-drug-targets-and-biomarkers-in-neurodegenerative-diseases-what-is-the-evidence
#14
REVIEW
Silvia Sorce, Roland Stocker, Tamara Seredenina, Rikard Holmdahl, Adriano Aguzzi, Adriano Chio, Antoine Depaulis, Freddy Heitz, Peter Olofsson, Tomas Olsson, Venceslas Duveau, Despina Sanoudou, Sara Skosgater, Antonia Vlahou, Dominique Wasquel, Karl-Heinz Krause, Vincent Jaquet
Neurodegenerative disease are frequently characterized by microglia activation and/or leukocyte infiltration in the parenchyma of the central nervous system and at the molecular level by increased oxidative modifications of proteins, lipids and nucleic acids. NADPH oxidases (NOX) emerged as a novel promising class of pharmacological targets for the treatment of neurodegeneration due to their role in oxidant generation and presumably in regulating microglia activation. The unique function of NOX is the generation of superoxide anion (O2(•-)) and hydrogen peroxide (H2O2)...
August 12, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28810923/the-chemokine-fractalkine-cx3cl1-attenuates-h2o2-induced-demyelination-in-cerebellar-slices
#15
Sinead A O'Sullivan, Kumlesh K Dev
BACKGROUND: Fractalkine/CX3CR1 signalling has been implicated in many neurodegenerative and neurological diseases of the central nervous system (CNS). This signalling pathway plays an important role in regulating reactive oxygen species (ROS), as well as itself being altered in conditions of oxidative stress. Here, we investigated the effects of recombinant fractalkine (rCX3CL1) in models of hydrogen peroxide (H2O2)-induced demyelination and astrocyte toxicity, within organotypic cerebellar slice cultures...
August 15, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28810281/-hyponatremia-differential-diagnosis-and-treatment
#16
Heiner Mönig, Alexander Arlt
Hyponatremia is the most common electrolyte abnormality seen in hospitalized patients, with up to 30 % having a plasma sodium concentration below 135 mmol/l. It is now clear that the clinical problem extends beyond the neurological symptoms, which can be explained by intracerebral osmotic fluid shifts and brain edema. Instead, chronic hyponatremia is associated with impaired gait stability and an increased risk of bone fragility fractures. Moreover, hyponatremia has been demonstrated to be an indicator of poor prognosis in a variety of conditions...
August 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28808113/lncrna-gas5-inhibits-microglial-m2-polarization-and-exacerbates-demyelination
#17
Dingya Sun, Zhongwang Yu, Xue Fang, Mingdong Liu, Yingyan Pu, Qi Shao, Dan Wang, Xiaolin Zhao, Aijun Huang, Zhenghua Xiang, Chao Zhao, Robin Jm Franklin, Li Cao, Cheng He
The regulation of inflammation is pivotal for preventing the development or reoccurrence of multiple sclerosis (MS). A biased ratio of high-M1 versus low-M2 polarized microglia is a major pathological feature of MS Here, using microarray screening, we identify the long noncoding RNA (lncRNA) GAS5 as an epigenetic regulator of microglial polarization. Gain- and loss-of-function studies reveal that GAS5 suppresses microglial M2 polarization. Interference with GAS5 in transplanted microglia attenuates the progression of experimental autoimmune encephalomyelitis (EAE) and promotes remyelination in a lysolecithin-induced demyelination model...
August 14, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28807772/streptococcus-agalactiae-impairs-cerebral-bioenergetics-in-experimentally-infected-silver-catfish
#18
Matheus D Baldissera, Carine F Souza, Belisa S Parmeggiani, Roberto C V Santos, Guilhian Leipnitz, Karen L S Moreira, Maria Izabel U M da Rocha, Marcelo L da Veiga, Bernardo Baldisserotto
It is becoming evident that bacterial infectious diseases affect brain energy metabolism, where alterations of enzymatic complexes of the mitochondrial respiratory chain and creatine kinase (CK) lead to an impairment of cerebral bioenergetics which contribute to disease pathogenesis in the central nervous system (CNS). Based on this evidence, the aim of this study was to evaluate whether alterations in the activity of complex IV of the respiratory chain and CK contribute to impairment of cerebral bioenergetics during Streptococcus agalactiae infection in silver catfish (Rhamdia quelen)...
August 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28806453/neurologic-complications-associated-with-the-zika-virus-in-brazilian-adults
#19
Ivan Rocha Ferreira da Silva, Jennifer A Frontera, Ana Maria Bispo de Filippis, Osvaldo Jose Moreira do Nascimento
Importance: There are no prospective cohort studies assessing the incidence and spectrum of neurologic manifestations secondary to Zika virus (ZIKV) infection in adults. Objective: To evaluate the rates of acute ZIKV infection among patients hospitalized with Guillain-Barré syndrome (GBS), meningoencephalitis, or transverse myelitis. Design, Setting, and Participants: A prospective, observational cohort study was conducted at a tertiary referral center for neurological diseases in Rio de Janeiro, Brazil, between December 5, 2015, and May 10, 2016, among consecutive hospitalized adults (>18 years of age) with new-onset acute parainfectious or neuroinflammatory disease...
August 14, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28804976/demyelinating-neuropathy-in-a-6-year-old-girl-with-autism-spectrum-disorder
#20
Akiko Kamata, Kazuhiro Muramatsu, Noriko Sawaura, Nishiki Makioka, Tomomi Ogata, Makoto Kuwashima, Hirokazu Arakawa
Herein we report the case of a 6-year-old girl with autism spectrum disorder (ASD) and weakness in the distal portion of the right upper limb. Although difficult to perform, nerve conduction studies indicated demyelinating neuropathy. Magnetic resonance imaging (MRI) showed swelling a nd high-intensity signals in the right brachial plexus and cervical spinal roots. The symptoms recovered after a single course of i.v. immunoglobulin. Electrophysiological indices and MRI findings also improved after treatment...
August 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
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