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https://www.readbyqxmd.com/read/28427704/comparison-of-brain-and-spinal-cord-magnetic-resonance-imaging-features-in-neuromyelitis-optica-spectrum-disorders-patients-with-or-without-aquaporin-4-antibody
#1
Moli Fan, Ying Fu, Lei Su, Yi Shen, Kristofer Wood, Li Yang, Yaou Liu, Fu-Dong Shi
BACKGROUND: The spinal cord and brain measurements are rarely investigated in neuromyelitis optica (NMO) patients with and without antibodies to aquaporin-4 (AQP4), directly compared to multiple sclerosis (MS) patients. OBJECTIVES: To investigate magnetic resonance imaging (MRI) features of both brain and spinal cord in NMO patients with and without antibodies to AQP4, compared with MS patients and healthy controls (HC). METHODS: We recruited 55 NMO including 30 AQP4 (+) and 25 AQP4 (-), 25 MS and 25 HC...
April 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28418377/the-magnaporthe-oryzae-nitrooxidative-stress-response-suppresses-rice-innate-immunity-during-blast-disease
#2
Margarita Marroquin-Guzman, David Hartline, Janet D Wright, Christian Elowsky, Travis J Bourret, Richard A Wilson
Understanding how microorganisms manipulate plant innate immunity and colonize host cells is a major goal of plant pathology. Here, we report that the fungal nitrooxidative stress response suppresses host defences to facilitate the growth and development of the important rice pathogen Magnaporthe oryzae in leaf cells. Nitronate monooxygenases encoded by NMO genes catalyse the oxidative denitrification of nitroalkanes. We show that the M. oryzae NMO2 gene is required for mitigating damaging lipid nitration under nitrooxidative stress conditions and, consequently, for using nitrate and nitrite as nitrogen sources...
April 18, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28413701/elevated-c-x-c-motif-ligand-13-and-b-cell-activating-factor-levels-in-neuromyelitis-optica-during-remission
#3
Su Wang, Tao Yang, Jianglong Wan, Yongchao Zhang, Yongping Fan
BACKGROUND: Discovery of specific antibodies against astrocytic water channel aquaporin-4 (AQP4), which is produced by plasma cells, in the serum of neuromyelitis optica (NMO) confirmed the pathogenic role of B cells in NMO. C-X-C motif ligand 13 (CXCL13) and B-cell-activating factor (BAFF) are two crucial factors for antibody production. Relevant studies have focused on the acute phase of NMO. However, CXCL13 and BAFF levels during remission, remain to be elucidated. OBJECTIVE: To evaluate serum levels of CXCL13 and BAFF in NMO and multiple sclerosis (MS) patients during remission and explore their correlation with immunosuppressive agents and clinical features in NMO...
April 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28393003/syndrome-of-inappropriate-antidiuretic-hormone-secretion-associated-with-seronegative-neuromyelitis-optica-spectrum-disorder
#4
Shin Ju Oh, Chun Gyoo Ihm, Tae Won Lee, Jin Sug Kim, Da Rae Kim, Eun Ji Park, Su Woong Jung, Ji-Hoon Lee, Sung Hyuk Heo, Kyung Hwan Jeong
The syndrome of inappropriate antidiuretic hormone secretion (SIADH) is a potential cause of hyponatremia of the central nervous system (CNS). Although SIADH has been reported to be associated with many other central nervous disorders, its association with neuromyelitis optica (NMO) or NMO spectrum disorders are rare. NMO is a demyelinating disorder characterized by optic neuritis and transverse myelitis. Aquaporin-4 (AQP4), which is the target antigen for a NMO autoantibody, is the predominant CNS water channel...
March 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28391784/neuromyelitis-optica-spectrum-disorders
#5
REVIEW
Tetsuya Akaishi, Ichiro Nakashima, Douglas Kazutoshi Sato, Toshiyuki Takahashi, Kazuo Fujihara
Neuromyelitis optica (NMO) is clinically characterized by severe optic neuritis and transverse myelitis, but recent studies with anti-aquaporin-4-antibody specific to NMO have revealed that the clinical spectrum is wider than previously thought. International consensus diagnostic criteria propose NMO spectrum disorders (NMOSD) as the term to define the entire spectrum including typical NMO, optic neuritis, acute myelitis, brain syndrome, and their combinations. NMOSD is now divided into anti-aquaporin-4-antibody-seropositive NMOSD and -seronegative NMOSD (or unknown serostatus)...
May 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/28370896/haemophilia-patients-unmet-needs-and-their-expectations-of-the-new-extended-half-life-factor-concentrates
#6
S von Mackensen, W Kalnins, J Krucker, J Weiss, W Miesbach, M Albisetti, I Pabinger, J Oldenburg
INTRODUCTION: National Member Organisations (NMO) of persons with haemophilia (PWH) from the DACH Region (D = Germany, A = Austria, CH = Switzerland) were interested to better understand PWH's expectations and concerns of extended half-life (EHL) factor concentrates (FC) before availability in these countries. METHODS: Based on an expert meeting and focus groups conducted across Germany a survey for haemophilia patients and their parents was developed and was sent out to 2,644 PWH...
March 30, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28367517/evaluation-of-tumorigenic-potential-of-ceo2-and-fe2o3-engineered-nanoparticles-by-a-human-cell-in-vitro-screening-model
#7
Todd A Stueckle, Donna C Davidson, Raymond Derk, Tiffany G Kornberg, Diane Schwegler-Berry, Sandra V Pirela, Glen Deloid, Philip Demokritou, Sudjit Luanpitpong, Yon Rojanasakul, Liying Wang
With rapid development of novel nanotechnologies that incorporate engineered nanomaterials (ENMs) into manufactured products, long-term, low dose ENM exposures in occupational settings is forecasted to occur with potential adverse outcomes to human health. Few ENM human health risk assessment efforts have evaluated tumorigenic potential of ENMs. Two widely used nano-scaled metal oxides (NMOs), cerium oxide (nCeO2) and ferric oxide (nFe2O3) were screened in the current study using a sub-chronic exposure to human primary small airway epithelial cells (pSAECs)...
April 2017: NanoImpact
https://www.readbyqxmd.com/read/28360812/serum-prolactin-levels-in-multiple-sclerosis-neuromyelitis-optica-and-clinically-isolated-syndrome-patients
#8
Recai Türkoğlu, Murat Giriş, Mehmet Gencer, Uğur Akcan, Arda Örçen
INTRODUCTION: Prolactin has been discussed as a factor likely to play a mediating role in multiple sclerosis (MS). Our aim was to investigate the possible association between prolactin production and clinical features of autoimmune demyelinating central nervous system disorders. METHODS: Serum prolactin levels of 255 MS patients, 19 neuromyelitis optica (NMO) patients, 15 clinically isolated syndrome (CIS) patients, and 240 healthy controls were measured by a heterogeneous sandwich magnetic separation assay...
December 2016: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28355737/-clinical-features-and-prognostic-analysis-of-neuromyelitisoptica-spectrum-disease-with-sjogrensyndrome
#9
N Jia, Y Jing, Q C Li, L Liu, J W Wang, X M Hu
Objective: To explore the clinical features and conduct prognostic analysis about visual recovery and relapse of neuromyelitisoptica (NMO) spectrum disease (NMOSD) with sjogren syndrome (SS). Methods: A retrospective and prospective observational study was conducted.Between July 2013 and June 2016, 172 patients with NMOSD (NMOSD-non SS: 116/172, 67.4%; NMOSD-SS: 56/172, 32.6%) were assessed at Beijing Tongren Hospital, Capital Medical University, Beijing, China.The prognostic factors of NMOSD-SS patients were also analyzed...
March 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28340598/myelin-specific-multiple-sclerosis-antibodies-cause-complement-dependent-oligodendrocyte-loss-and-demyelination
#10
Yiting Liu, Katherine S Given, Danielle E Harlow, Adeline M Matschulat, Wendy B Macklin, Jeffrey L Bennett, Gregory P Owens
Intrathecal immunoglobulin G (IgG) synthesis, cerebrospinal fluid (CSF) oligoclonal IgG bands and lesional IgG deposition are seminal features of multiple sclerosis (MS) disease pathology. Both the specific targets and pathogenic effects of MS antibodies remain poorly characterized. We produced IgG1 monoclonal recombinant antibodies (rAbs) from clonally-expanded plasmablasts recovered from MS patient CSF. Among these were a subset of myelin-specific MS rAbs. We examined their immunoreactivity to mouse organotypic cerebellar slices by live binding and evaluated tissue injury in the presence and absence of human complement...
March 24, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28340257/cd8-positive-t-cell-leukoencephalitis-with-astrocytopathy-clinically-presenting-as-neuromyelitis-optica
#11
Diana L Thomas, Jody Manners, Daniel Marker, Joseph Mettenburg, Geoffrey Murdoch, Bryan Stevens, Guoji Wang, Clayton Wiley
We describe a novel disease entity with the clinical and radiologic presentation of neuromyelitis optica (NMO) and widespread CD8-positive T-cell leukoencephalitis and astrocytopathy. The 59-year-old female patient had a complex 2-year neurological history that included early changes in cognition and memory, progressive lower extremity motor dysfunction, and multimodal sensory involvement. MRI of the spinal cord showed increased T2 signal in the central cord extending from C2 through T4. MRI of the brain showed symmetric radial enhancement in periventricular deep white matter without evidence of demyelinating lesions...
March 16, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28331329/successful-treatment-for-psychomotor-agitation-in-neuromyelitis-optica-spectrum-disorder-with-trazodone-risperidone-combination-a-case-report
#12
Zui Narita, Harumasa Takano, Tomiki Sumiyoshi
Neuromyelitis optica (NMO) is a relapsing disease that typically affects the spinal cord and optic nerves. So far, a few studies have reported pharmacologic treatment for psychiatric symptoms in patients with NMO spectrum disorder (NMOSD). However, no literature has described psychomotor agitation associated with the disease and its treatment. We report an 84-year-old woman with NMOSD whose psychomotor agitation was effectively treated with a combination of trazodone and risperidone. Our observation suggests the ability of augmentation of antipsychotic drugs with antidepressants to ameliorate psychotic symptoms associated with NMOSD...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28306572/neuromyelitis-optica-and-neuromyelitis-optica-spectrum-disorders
#13
Romain Marignier, Alvaro Cobo Calvo, Sandra Vukusic
PURPOSE OF REVIEW: The discovery of highly specific auto-antibodies directed against the water channel aquaporin 4 was a quantum leap in the definition, classification and management of neuromyelitis optica (NMO). Herein, we propose an update on epidemiological, clinical and therapeutic advances in the field, underlining unmet needs. RECENT FINDINGS: Large-scale epidemiological studies have recently provided a more precise evaluation of NMO prevalence and a better stratification regarding ethnicity and sex...
June 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28293214/different-phenotypes-at-onset-in-neuromyelitis-optica-spectrum-disorder-patients-with-aquaporin-4-autoimmunity
#14
Youming Long, Junyan Liang, Linzhan Wu, Shaopeng Lin, Cong Gao, Xiaohui Chen, Wei Qiu, Yu Yang, Xueping Zheng, Ning Yang, Min Gao, Yaotang Chen, Zhanhang Wang, Quanxi Su
BACKGROUND: Although rare, brain abnormalities without optic neuritis (ON) or transverse myelitis (TM) diagnosed with neuromyelitis optica spectrum disorder (NMOSD) have been reported in patients positive for the aquaporin-4 (AQP4) antibody. OBJECTIVE: To analyze demographic and clinical differences among NMOSD patients without ON or TM, those with either ON or TM, and patients with simultaneous ON and TM at disease onset. METHODS: In this retrospective study, patients who were positive for the AQP4 antibody, as detected using a cell-based assay, at the Second Affiliated Hospital of Guangzhou Medical University in China were recruited...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28284341/mog-antibody-associated-demyelinating-disease-of-the-cns-a-clinical-and-pathological-study-in-chinese-han-patients
#15
Lei Zhou, Yongheng Huang, Haiqing Li, Jie Fan, Jingzi Zhangbao, Hai Yu, Yuxin Li, Jiahong Lu, Chongbo Zhao, Chuanzhen Lu, Min Wang, Chao Quan
We aim to evaluate the clinical relevance of MOG-ab in a cohort of Chinese Han adults with CNS inflammatory demyelinating diseases (IDDs). MOG-ab and AQP4-ab were examined through a fixed cell based indirect immune-fluorescence assay in 86 patients with CNS-IDDs. MOG-ab was positive in 12 patients, while AQP4-ab was positive in 31 patients; none double positives. Optic neuritis (ON) was the most frequent symptom at onset (75.0%) or during the whole disease course (83.3%) of MOG-ab associated IDDs (MOG-IDDs); 79...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28283439/interleukin-6-analysis-of-572-consecutive-csf-samples-from-neurological-disorders-a-special-focus-on-neuromyelitis-optica
#16
Akiyuki Uzawa, Masahiro Mori, Hiroki Masuda, Ryohei Ohtani, Tomohiko Uchida, Setsu Sawai, Satoshi Kuwabara
BACKGROUND: Elevation of cerebrospinal fluid (CSF) interleukin (IL)-6 has been reported in various neurological disorders but has never been systematically analyzed. Our main objectives are to compare the CSF IL-6 levels among various neurological disorders and to evaluate the significance of CSF IL-6 measurements for the diagnosis of neuromyelitis optica (NMO). METHODS: We retrospectively investigated the IL-6 levels of 572 consecutive CSF samples in patients with various neurological disorders...
March 8, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28283104/comparing-epidemiology-and-baseline-characteristic-of-multiple-sclerosis-and-neuromyelitis-optica-a-case-control-study
#17
COMPARATIVE STUDY
Sharareh Eskandarieh, Saharnaz Nedjat, Ibrahim Abdollahpour, Abdorreza Naser Moghadasi, Amir Reza Azimi, Mohammad Ali Sahraian
BACKGROUND: Autoimmune syndromes such as Multiple Sclerosis (MS) and Neuromyelitis Optica (NMO) are chronic, demyelinating diseases of the central nervous system which usually affect young adults. Both environmental risk factors and genetic susceptibility have been proposed to explain the etiology of these diseases. The aim of this study was to compare epidemiology and possible risk factors in MS and NMO in Tehran, Iran. METHOD: A population-based incident case-control study was performed in Tehran based on a study conducted on1513 MS patients from Iranian MS Society registry center of Tehran, from 2014 to 2015, and 83 NMO patients diagnosed with NMO in 2015 at Sina hospital, a tertiary care referral center in Tehran...
February 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28281110/headache-in-neuromyelitis-optica
#18
REVIEW
Alina Masters-Israilov, Matthew S Robbins
PURPOSE OF REVIEW: Neuromyelitis optica (NMO) classically features a clinical presentation that includes longitudinally extensive transverse myelitis and optic neuritis. However, many other pathognomonic phenomena have more recently been described in patients diagnosed with NMO, including intractable hiccups, vomiting, and painful tonic spasms, but less has been reported regarding the relationship between NMO and headache. Though headache is well established as both a symptom and comorbidity of multiple sclerosis (MS), it has been much less described thus far in the NMO literature and warrants more careful evaluation...
April 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28274814/the-role-of-aquaporin-4-in-synaptic-plasticity-memory-and-disease
#19
REVIEW
Jacqueline A Hubbard, Jenny I Szu, Devin K Binder
Since the discovery of aquaporins, it has become clear that the various mammalian aquaporins play critical physiological roles in water and ion balance in multiple tissues. Aquaporin-4 (AQP4), the principal aquaporin expressed in the central nervous system (CNS, brain and spinal cord), has been shown to mediate CNS water homeostasis. In this review, we summarize new and exciting studies indicating that AQP4 also plays critical and unanticipated roles in synaptic plasticity and memory formation. Next, we consider the role of AQP4 in Alzheimer's disease (AD), amyotrophic lateral sclerosis (ALS), Parkinson's disease (PD), multiple sclerosis (MS), neuromyelitis optica (NMO), epilepsy, traumatic brain injury (TBI), and stroke...
March 6, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28243026/initial-pattern-of-optic-nerve-enhancement-in-korean-patients-with-unilateral-optic-neuritis
#20
COMPARATIVE STUDY
Dae Yong Son, Kyung-Ah Park, Su Sie Seok, Ju-Yeun Lee, Sei Yeul Oh
PURPOSE: The purpose of this study was to demonstrate whether the pattern of optic nerve enhancement in magnetic resonance imaging (MRI) can help to differentiate between idiopathic optic neuritis (ON), neuromyelitis optica (NMO), and multiple sclerosis (MS) in unilateral ON. METHODS: An MRI of the brain and orbits was obtained in patients with acute unilateral ON. Patients with ON were divided into three groups: NMO, MS, and idiopathic ON. The length and location of the abnormal optic nerve enhancement were compared for ON eyes with and without NMO or MS...
February 2017: Korean Journal of Ophthalmology: KJO
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