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Aquaporin-4 antibodies

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https://www.readbyqxmd.com/read/28716289/devic-s-disease-before-devic-on-the-contribution-of-friedrich-albin-schanz-1863-1923
#1
S Jarius, B Wildemann
Neuromyelitis optica (NMO, Devic's disease) is an autoimmune disorder of the CNS that mainly affects the optic nerves and spinal cord and, if not treated, can leave patients blind and wheelchair-bound. NMO was long considered a clinical variant of multiple sclerosis (MS). While the history of MS has been studied extensively, relatively little is known about the early history of NMO. A dissertation written by Fernand Gault (1873-1936), a doctoral student to Eugène Devic (1858-1930), a Lyon-based neurologist after whom the disease would later be named, is considered by many the first review of NMO...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28684532/longitudinal-analysis-of-myelin-oligodendrocyte-glycoprotein-antibodies-in-cns-inflammatory-diseases
#2
Jae-Won Hyun, Mark R Woodhall, Su-Hyun Kim, In Hye Jeong, Byeong-Su Kong, Gayoung Kim, Yeseul Kim, Min Su Park, Sarosh R Irani, Patrick Waters, Ho Jin Kim
BACKGROUND: We evaluated the seroprevalence of myelin oligodendrocyte glycoprotein immunoglobulin G1 (MOG-IgG) and associated clinical features of patients from a large adult-dominant unselected cohort with mainly relapsing central nervous system (CNS) inflammatory diseases. We also investigate the clinical relevance of MOG-IgG through a longitudinal analysis of serological status over a 2-year follow-up period. METHODS: Serum samples from 505 patients with CNS inflammatory diseases at the National Cancer Center were analysed using cell-based assays for MOG-IgG and aquaporin-4 immunoglobulin G (AQP4-IgG)...
July 6, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28679661/glucose-regulated-protein-78-autoantibody-associates-with-blood-brain-barrier-disruption-in-neuromyelitis-optica
#3
Fumitaka Shimizu, Kristin L Schaller, Gregory P Owens, Anne C Cotleur, Debra Kellner, Yukio Takeshita, Birgit Obermeier, Thomas J Kryzer, Yasuteru Sano, Takashi Kanda, Vanda A Lennon, Richard M Ransohoff, Jeffrey L Bennett
Neuromyelitis optica (NMO) is an inflammatory disorder mediated by antibodies to aquaporin-4 (AQP4) with prominent blood-brain barrier (BBB) breakdown in the acute phase of the disease. Anti-AQP4 antibodies are produced mainly in the periphery, yet they target the astrocyte perivascular end feet behind the BBB. We reasoned that an endothelial cell-targeted autoantibody might promote BBB transit of AQP4 antibodies and facilitate NMO attacks. Using monoclonal recombinant antibodies (rAbs) from patients with NMO, we identified two that strongly bound to the brain microvascular endothelial cells (BMECs)...
July 5, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28679367/relationship-between-azathioprine-metabolites-and-therapeutic-efficacy-in-chinese-patients-with-neuromyelitis-optica-spectrum-disorders
#4
Xindi Li, Shenghui Mei, Xiaoqing Gong, Heng Zhou, Li Yang, Anna Zhou, Yonghong Liu, Xingang Li, Zhigang Zhao, Xinghu Zhang
BACKGROUND: Neuromyelitis optica spectrum disorders (NMOSD) are demyelinating autoimmune diseases in the central nervous system (CNS) that are characterized by a high relapse rate and the presence of anti-aquaporin 4 antibodies (AQP4-IgG) in the serum. Azathioprine (AZA) is a first-line immunomodulatory drug that is widely used for the treatment of patients with NMOSD. However, the efficacy and safety of AZA vary in different individuals. METHOD: Thirty-two patients with NMOSD who regularly took AZA were enrolled in the study at Beijing Tiantan Hospital, Capital Medical University...
July 5, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28674367/neuromyelitis-optica-spectrum-disorder-with-recurrent-intracranial-hemorrhage
#5
Hiroaki Yaguchi, Yasunori Mito, Ikkei Ohashi, Taichi Nomura, Ichiro Yabe, Yasutaka Tajima
The patient was a woman without hypertension who had previously experienced intracranial hemorrhage twice at 48 and 56 years of age. At 59 years of age, she was diagnosed with neuromyelitis optica spectrum disorder (NMOSD) based on the presence of a brain stem lesion and the detection of anti-aquaporin 4 (AQP4) antibodies. After 5 months of continuous treatment with prednisolone (15 mg/day), she presented with optic neuritis and intracranial bleeding. A recurrent attack of NMOSD and intracranial hemorrhage were concurrently diagnosed...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28667382/magnetic-resonance-imaging-and-clinical-features-in-acute-and-subacute-myelopathies
#6
REVIEW
Stefan Weidauer, Marlies Wagner, Michael Nichtweiß
Differential diagnosis of acute and subacute transverse myelopathy includes inflammatory, infectious, vascular, metabolic and paraneoplastic etiologies. Information on the diagnostic approach to transverse myelopathy with regard to daily clinical practice is provided. The differentiation between five lesion patterns on magnetic resonance imaging (MRI) in myelitis may be helpful: (1) longitudinal extensive transverse myelitis, (2) short segment ovoid or peripherally located, (3) "polio-like", (4) granulomatous and (5) segmental with rash...
June 30, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28642888/aquaporin-4-antibodies-in-patients-treated-with-natalizumab-for-suspected-ms
#7
Anna Gahlen, Anne-Kathrin Trampe, Steffen Haupeltshofer, Marius Ringelstein, Orhan Aktas, Achim Berthele, Brigitte Wildemann, Ralf Gold, Sven Jarius, Ingo Kleiter
OBJECTIVE: To evaluate (1) the frequency of aquaporin-4 antibody (AQP4-ab)-seropositive cases among patients treated with natalizumab (NAT) and previously diagnosed with MS (MS(NAT)) in a nationwide cohort, (2) the clinical course of NAT-treated AQP4-ab-seropositive neuromyelitis optica spectrum disorder (NMOSD) patients (NMO(NAT)), (3) AQP4-ab titers in NMO(NAT) and AQP4-ab-seropositive NMOSD treated with other immunotherapies (NMO(IT)), and (4) immune mechanisms influencing disease activity in NMO(NAT)...
July 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28640924/correction-accuracy-of-the-fluorescence-activated-cell-sorting-assay-for-the-aquaporin-4-antibody-aqp4-ab-comparison-with-the-commercial-aqp4-ab-assay-kit
#8
Jiwon Yang, Sung Min Kim, Yoo-Jin Kim, So Young Cheon, Boram Kim, Kyeong Cheon Jung, Kyung Seok Park
[This corrects the article DOI: 10.1371/journal.pone.0162900.].
2017: PloS One
https://www.readbyqxmd.com/read/28640199/the-role-of-peripheral-cns-directed-antibodies-in-promoting-inflammatory-cns-demyelination
#9
REVIEW
Silke Kinzel, Martin S Weber
In central nervous system (CNS) demyelinating disorders, such as multiple sclerosis (MS), neuromyelitis optica (NMO) and related NMO-spectrum disorders (NMO-SD), a pathogenic role for antibodies is primarily projected into enhancing ongoing CNS inflammation by directly binding to target antigens within the CNS. This scenario is supported at least in part, by antibodies in conjunction with complement activation in the majority of MS lesions and by deposition of anti-aquaporin-4 (AQP-4) antibodies in areas of astrocyte loss in patients with classical NMO...
June 22, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28619428/neuromyelitis-optica-presenting-with-horner-syndrome-a-case-report-and-review-of-literature
#10
İrem Fatma Uludağ, Alp Sarıteke, Levent Öcek, Yaşar Zorlu, Ufuk Şener, Figen Tokuçoğlu, Burhanettin Uludağ
Neuromyelitis optica (NMO) is a demyelinating disease of the central nervous system that predominantly affects the spinal cord and optic nerves. We describe a 19 years old woman with left Horner syndrome (HS), who was diagnosed as NMO with characteristic longitudinally extensive myelitis and positive serum aquaporin-4 immunoglobulin G antibodies (AQP4-IgG). Our report describes one of the very rare ocular motor symptoms in NMO patients.
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28615429/diagnostic-algorithm-for-relapsing-acquired-demyelinating-syndromes-in-children
#11
Yael Hacohen, Kshitij Mankad, W K Chong, Frederik Barkhof, Angela Vincent, Ming Lim, Evangeline Wassmer, Olga Ciccarelli, Cheryl Hemingway
OBJECTIVE: To establish whether children with relapsing acquired demyelinating syndromes (RDS) and myelin oligodendrocyte glycoprotein antibodies (MOG-Ab) show distinctive clinical and radiologic features and to generate a diagnostic algorithm for the main RDS for clinical use. METHODS: A panel reviewed the clinical characteristics, MOG-Ab and aquaporin-4 (AQP4) Ab, intrathecal oligoclonal bands, and Epstein-Barr virus serology results of 110 children with RDS. A neuroradiologist blinded to the diagnosis scored the MRI scans...
June 14, 2017: Neurology
https://www.readbyqxmd.com/read/28601290/suspected-bacterial-meningomyelitis-the-first-presenting-clinical-feature-of-neuromyelitis-optica-spectrum-disorder
#12
Xiang Li, Jie Lin, Sipei Pan, Yiyun Weng, Jia Li, Xu Zhang, Junhui Xia, Qiaowen Tong
A rare case of neuromyelitis optica spectrum disorder, suspected to be bacterial meningomyelitis as the initial manifestation, is reported. The patient presented with initial symptoms of meningomyelitis and fever. Cerebrospinal fluid analysis revealed pleocytosis (1280×10(6)/L [98% lymphocytes]) and glucose level of 1.8mmol/L. Magnetic resonance imaging revealed >3 vertebral, longitudinally extensive transverse myelitis and area postrema lesions. Right optic neuritis was experienced 20months after the first attack...
August 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28601284/aquaporin-4-antibody-positive-neuromyelitis-optica-spectrum-disorder-associated-with-esophageal-cancer
#13
Tomoya Kon, Tatsuya Ueno, Chieko Suzuki, Jinichi Nunomura, Shohei Igarashi, Tsugumi Sato, Masahiko Tomiyama
Autoimmune diseases are sometimes associated with neoplasms. A 70-year-old Japanese woman with myelitis, seropositive for aquaporin-4 (AQP4) antibody, was diagnosed with neuromyelitis optica spectrum disorder (NMOSD); thereafter an esophageal squamous cell carcinoma was identified. Immunohistochemically, her cancer was anti-AQP4 antibody negative. Her symptoms, imaging findings and AQP4 titer markedly improved with corticosteroid and anti-cancer therapies. Although AQP4 may be a paraneoplastic antigen, paraneoplastic syndrome could not be definitively diagnosed in this case...
August 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28589164/cns-aquaporin-4-specific-b-cells-connect-with-multiple-b-cell-compartments-in-neuromyelitis-optica-spectrum-disorder
#14
Markus C Kowarik, David Astling, Christiane Gasperi, Scott Wemlinger, Hannah Schumann, Monika Dzieciatkowska, Alanna M Ritchie, Bernhard Hemmer, Gregory P Owens, Jeffrey L Bennett
OBJECTIVES: Neuromyelitis optica spectrum disorder (NMOSD) is a severe inflammatory disorder of the central nervous system (CNS) targeted against aquaporin-4 (AQP4). The origin and trafficking of AQP4-specific B cells in NMOSD remains unknown. METHODS: Peripheral (n = 7) and splenic B cells (n = 1) recovered from seven NMOSD patients were sorted into plasmablasts, naïve, memory, and CD27-IgD- double negative (DN) B cells, and variable heavy chain (VH) transcriptome sequences were generated by deep sequencing...
June 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28572277/immunotherapies-in-neuromyelitis-optica-spectrum-disorder-efficacy-and-predictors-of-response
#15
Jan-Patrick Stellmann, Markus Krumbholz, Tim Friede, Anna Gahlen, Nadja Borisow, Katrin Fischer, Kerstin Hellwig, Florence Pache, Klemens Ruprecht, Joachim Havla, Tania Kümpfel, Orhan Aktas, Hans-Peter Hartung, Marius Ringelstein, Christian Geis, Christoph Kleinschnitz, Achim Berthele, Bernhard Hemmer, Klemens Angstwurm, Kim Lea Young, Simon Schuster, Martin Stangel, Florian Lauda, Hayrettin Tumani, Christoph Mayer, Lena Zeltner, Ulf Ziemann, Ralf Andreas Linker, Matthias Schwab, Martin Marziniak, Florian Then Bergh, Ulrich Hofstadt-van Oy, Oliver Neuhaus, Uwe Zettl, Jürgen Faiss, Brigitte Wildemann, Friedemann Paul, Sven Jarius, Corinna Trebst, Ingo Kleiter
OBJECTIVE: To analyse predictors for relapses and number of attacks under different immunotherapies in patients with neuromyelitis optica spectrum disorder (NMOSD). DESIGN: This is a retrospective cohort study conducted in neurology departments at 21 regional and university hospitals in Germany. Eligible participants were patients with aquaporin-4-antibody-positive or aquaporin-4-antibody-negative NMOSD. Main outcome measures were HRs from Cox proportional hazard regression models adjusted for centre effects, important prognostic factors and repeated treatment episodes...
August 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28571193/recurrent-longitudinally-extensive-myelitis-and-aquaporin-4-seronegativity-the-expanding-spectrum-of-neuromyelitis-optica
#16
Ravi Anadure, Coimbatore Sivasubramanian Narayanan, Govindaraj Varadraj
Neuromyelitis Optica Spectrum Disorder (NMOSD) is a recently proposed unifying term for Neuromyelitis Optica (NMO), also known as Devic's disease and related syndromes. It is a relapsing inflammatory demyelinating disease that most commonly affects optic nerves and the spinal cord, leading to sudden vision loss or weakness in one or both eyes, and loss of sensation and bladder function. Though inflammation may also involve the brain, the lesions seen in NMO are different from Multiple Sclerosis (MS) which has a similar clinical course...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28567523/bystander-mechanism-for-complement-initiated-early-oligodendrocyte-injury-in-neuromyelitis-optica
#17
Lukmanee Tradtrantip, Xiaoming Yao, Tao Su, Alex J Smith, Alan S Verkman
Neuromyelitis optica spectrum disorder (herein called NMO) is an autoimmune inflammatory disease of the central nervous system in which immunoglobulin G antibodies against astrocyte water channel aquaporin-4 (AQP4-IgG) cause demyelination and neurological deficit. Injury to oligodendrocytes, which do not express AQP4, links the initiating pathogenic event of AQP4-IgG binding to astrocyte AQP4 to demyelination. Here, we report evidence for a complement 'bystander mechanism' to account for early oligodendrocyte injury in NMO in which activated, soluble complement proteins following AQP4-IgG binding to astrocyte AQP4 result in deposition of the complement membrane attack complex (MAC) on nearby oligodendrocytes...
July 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28551037/a-child-with-acute-transverse-myelitis-requiring-permanent-pacemaker-implantation
#18
Masataka Fukuoka, Ichiro Kuki, Asako Horino, Kiyohiro Kim, Yuka Hattori, Hitomi Tsuji, Megumi Nukui, Shin Okazaki, Hisashi Kawawaki, Yoko Yoshida, Jyunichi Ishikawa, Hiroshi Rinka
We diagnosed a 3-year-old girl with acute transverse myelitis (ATM). She presented with weakness of the limbs and developed urination difficulty and respiratory disturbance. Magnetic resonance imaging revealed a symmetric area of high signal intensity on T2-weighted images involving the lower end of the medulla oblongata to the level of the fourth thoracic vertebra. Anti-aquaporin-4 antibody was negative. She was treated with intravenous methylprednisolone pulse therapy, immunoglobulin therapy, and plasmapheresis; however, her clinical symptoms did not change...
May 24, 2017: Brain & Development
https://www.readbyqxmd.com/read/28550069/incidence-and-prevalence-of-nmosd-in-australia-and-new-zealand
#19
Wajih Bukhari, Kerri M Prain, Patrick Waters, Mark Woodhall, Cullen M O'Gorman, Laura Clarke, Roger A Silvestrini, Christine S Bundell, David Abernethy, Sandeep Bhuta, Stefan Blum, Mike Boggild, Karyn Boundy, Bruce J Brew, Matthew Brown, Wallace J Brownlee, Helmut Butzkueven, William M Carroll, Celia Chen, Alan Coulthard, Russell C Dale, Chandi Das, Keith Dear, Marzena J Fabis-Pedrini, David Fulcher, David Gillis, Simon Hawke, Robert Heard, Andrew P D Henderson, Saman Heshmat, Suzanne Hodgkinson, Sofia Jimenez-Sanchez, Trevor Killpatrick, John King, Christopher Kneebone, Andrew J Kornberg, Jeannette Lechner-Scott, Ming-Wei Lin, Christpher Lynch, Richard Macdonell, Deborah F Mason, Pamela A McCombe, Michael P Pender, Jennifer A Pereira, John D Pollard, Stephen W Reddel, Cameron Shaw, Judith Spies, James Stankovich, Ian Sutton, Steve Vucic, Michael Walsh, Richard C Wong, Eppie M Yiu, Michael H Barnett, Allan G Kermode, Mark P Marriott, John D E Parratt, Mark Slee, Bruce V Taylor, Ernest Willoughby, Robert J Wilson, Angela Vincent, Simon A Broadley
OBJECTIVES: We have undertaken a clinic-based survey of neuromyelitis optica spectrum disorders (NMOSDs) in Australia and New Zealand to establish incidence and prevalence across the region and in populations of differing ancestry. BACKGROUND: NMOSD is a recently defined demyelinating disease of the central nervous system (CNS). The incidence and prevalence of NMOSD in Australia and New Zealand has not been established. METHODS: Centres managing patients with demyelinating disease of the CNS across Australia and New Zealand reported patients with clinical and laboratory features that were suspicious for NMOSD...
August 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28542592/fatigue-in-patients-with-neuromyelitis-optica-spectrum-disorder-and-its-impact-on-quality-of-life
#20
Jin Myoung Seok, Misong Choi, Eun Bin Cho, Hye Lim Lee, Byoung Joon Kim, Kwang Ho Lee, Pamela Song, Eun Yeon Joo, Ju-Hong Min
Fatigue is a prevalent symptom and major burden in neuroimmunological diseases. In neuromyelitis optica spectrum disorder (NMOSD), a severe autoimmune central nervous system (CNS) inflammatory disease with autoantibodies reactive to aquaporin-4, there are few reports about fatigue and quality of life (QOL). We aimed to evaluate the severity of fatigue and its relationship with QOL in patients with NMOSD. We prospectively studied patients with NMOSD who were in remission and seropositive for anti-aquaporin-4 antibody, and they were divided into 2 groups based on the presence of fatigue assessed using the Functional Assessment of Chronic Illness Therapy-fatigue score...
2017: PloS One
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