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https://www.readbyqxmd.com/read/28899640/status-epilepticus-in-pregnancy-etiology-management-and-clinical-outcomes
#1
Keni Ravish Rajiv, Ashalatha Radhakrishnan
BACKGROUND: Status epilepticus (SE) in pregnancy carries significant risk to both mother and fetus. There is limited literature available on SE occurring in pregnancy world-over, with majority being from obstetric centers. METHODS: All women who developed SE related to pregnancy (gestation, labor, or puerperium) between January 2000 and December 2016 were included in the study. Data were collected from our SE registry, maintained, and archived in the institute. The variables influencing the maternal and fetal outcome were compared using Student's t-test for continuous variables and Fisher's exact test for discrete variables...
September 9, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28882707/functional-connectivity-of-large-scale-brain-networks-in-patients-with-anti-nmda-receptor-encephalitis-an-observational-study
#2
Michael Peer, Harald Prüss, Inbal Ben-Dayan, Friedemann Paul, Shahar Arzy, Carsten Finke
BACKGROUND: In anti-NMDA receptor (NMDAR) encephalitis, antibody-mediated dysfunction of NMDARs causes severe neuropsychiatric symptoms, including psychosis, memory deficits, and movement disorders. However, it remains elusive how antibody-mediated NMDAR dysfunction leads to these symptoms, and whether the symptoms arise from impairment in specific brain regions and the interactions between impaired regions. METHODS: In this observational study, we recruited 43 patients with anti-NMDAR encephalitis from a tertiary university hospital and 43 age-matched and sex-matched healthy controls without a history of neurological or psychiatric disorders, who were recruited from the general population of Berlin...
September 4, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28882191/effects-of-sustained-i-c-v-infusion-of-lupus-csf-and-autoantibodies-on-behavioral-phenotype-and-neuronal-calcium-signaling
#3
Minesh Kapadia, Dunja Bijelić, Hui Zhao, Donglai Ma, Ljudmila Stojanovich, Milena Milošević, Pavle Andjus, Boris Šakić
Systemic lupus erythematosus (SLE) is a potentially fatal autoimmune disease that is often accompanied by brain atrophy and diverse neuropsychiatric manifestations of unknown origin. More recently, it was observed that cerebrospinal fluid (CSF) from patients and lupus-prone mice can be neurotoxic and that acute administration of specific brain-reactive autoantibodies (BRAs) can induce deficits in isolated behavioral tasks. Given the chronic and complex nature of CNS SLE, the current study examines broad behavioral performance and neuronal Ca(2+) signaling in mice receiving a sustained infusion of cerebrospinal fluid (CSF) from CNS SLE patients and putative BRAs (anti-NR2A, anti-ribosomal P, and anti-α-tubulin)...
September 7, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28829986/neurobiology-of-autoimmune-encephalitis
#4
REVIEW
Masaki Fukata, Norihiko Yokoi, Yuko Fukata
Autoimmune encephalitis presenting with amnesia, seizures, and psychosis is highly topical in basic and clinical neuroscience. Recent studies have identified numerous associated autoantibodies, targeting cell-surface synaptic proteins including neurotransmitter receptors (e.g. NMDA receptors (NMDARs)) and a secreted protein, LGI1. In vitro and in vivo analyses of the influence of the autoantibodies have begun to clarify their causal roles. Of particular interest is the generation of recombinant monoclonal antibodies from patients' B cells with anti-NMDAR encephalitis...
August 19, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28763062/pathogen-mediated-nmda-receptor-autoimmunity-and-cellular-barrier-dysfunction-in-schizophrenia
#5
G Kannan, K L Gressitt, S Yang, C R Stallings, E Katsafanas, L A Schweinfurth, C L G Savage, M B Adamos, K M Sweeney, A E Origoni, S Khushalani, S Bahn, F M Leweke, F B Dickerson, R H Yolken, M V Pletnikov, E G Severance
Autoantibodies that bind the N-methyl-D-aspartate receptor (NMDAR) may underlie glutamate receptor hypofunction and related cognitive impairment found in schizophrenia. Exposure to neurotropic pathogens can foster an autoimmune-prone environment and drive systemic inflammation leading to endothelial barrier defects. In mouse model cohorts, we demonstrate that infection with the protozoan parasite, Toxoplasma gondii, caused sustained elevations of IgG class antibodies to the NMDAR in conjunction with compromised blood-gut and blood-brain barriers...
August 1, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28761381/nmda-receptors-are-important-regulators-of-pancreatic-cancer-and-are-potential-targets-for-treatment
#6
William G North, Fuli Liu, Liz Z Lin, Ruiyang Tian, Bonnie Akerman
Pancreatic cancer, particularly adenocarcinoma of the pancreas, is a common disease with a poor prognosis. In this study, the importance of N-methyl-D-aspartate (NMDA) receptors for the growth and survival of pancreatic cancer was investigated. Immunohistochemistry performed with antibodies against GluN1 and GluN2B revealed that all invasive adenocarcinoma and neuroendocrine pancreatic tumors likely express these two NMDA receptor proteins. These proteins were found to be membrane components of pancreatic cancer cell lines, and both channel-blocker antagonist and GluN2B antagonist significantly reduced cell viability in vitro...
2017: Clinical Pharmacology: Advances and Applications
https://www.readbyqxmd.com/read/28750305/progressive-hippocampal-sclerosis-after-viral-encephalitis-potential-role-of-nmda-receptor-antibodies
#7
Stoyan Popkirov, Fatme Seval Ismail, Wenke Grönheit, Monika Kapauer, Jörg Wellmer, Christian G Bien
PURPOSE: Survivors of viral encephalitis can develop refractory epilepsy and hippocampal sclerosis. Both the initial infectious insult and the secondary effects of recurrent seizures have been implicated in chronic disease progression. Recently, post-infectious autoimmunity, involved in acute relapses, has also been proposed as a pathomechanism for chronic disease progression. Our case series suggests a potential role of antibodies against the N-methyl-d-aspartate receptor (NMDAR) in chronic inflammatory disease beyond acute manifestations...
July 19, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28704576/psychosis-an-autoimmune-disease
#8
REVIEW
Adam Aj Al-Diwani, Thomas A Pollak, Sarosh R Irani, Belinda R Lennox
Psychotic disorders are common and disabling. Overlaps in clinical course in addition to epidemiological and genetic associations raise the possibility that autoimmune mechanisms may underlie some psychoses, potentially offering novel therapeutic approaches. Several immune loci including the major histocompatibility complex and B-cell markers CD19 and CD20 achieve genome-wide significance in schizophrenia. Emerging evidence suggests a potential role via neurodevelopment in addition to classical immune pathways...
July 13, 2017: Immunology
https://www.readbyqxmd.com/read/28683723/case-report-anaesthetic-management-of-radical-gastrectomy-for-gastric-cancer-associated-with-anti-n-methyl-d-aspartate-receptor-encephalitis
#9
Lei Ding, Hongyu Tan, Ziyu Li, Jiafu Ji, Xuejun Song
BACKGROUND: Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is a rare neurological disorder that is caused by the production of antibodies against NMDARs. As many anaesthetic drugs interact with NMDARs and may worsen the disease and because the disease poses risks, such as cardiovascular events, hyperthermia and respiratory insufficiency, while under anaesthesia, administering anaesthesia to patients with this disorder is clinically challenging. CASE PRESENTATION: A 55-year-old man with gastric cancer associated with anti-NMDAR encephalitis who was diagnosed 8 months prior was admitted to Peking University Cancer Hospital for tumour resection...
July 6, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28680648/treating-refractory-post-herpetic-anti-n-methyl-d-aspartate-receptor-encephalitis-with-rituximab
#10
Christine Strippel, Constanze Mönig, Kristin S Golombeck, Andre Dik, Kathrin Bönte, Stjepana Kovac, Andreas Schulte-Mecklenbeck, Heinz Wiendl, Sven G Meuth, Andreas Johnen, Catharina C Gross, Nico Melzer
Herpes simplex virus-1 has been identified as the trigger factor in certain cases of NMDA-receptor autoimmune encephalitis. We report on a 67-year-old female patient, who was severely affected by post-herpetic NMDA-receptor autoimmune encephalitis. Her symptoms did not improve under methylprednisolone pulse therapy and plasma exchange under acyclovir prophylaxis. She received protein A immunoadsorption and a long-term immunosuppression with rituximab. Under treatment, activated T-cells as well as B- and plasma cells decreased in peripheral blood and cerebrospinal fluid, and anti-NMDA-R IgG titers in serum and cerebrospinal fluid declined with near complete cessation of intrathecal autoantibody synthesis...
July 2017: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/28675819/anti-neuronal-autoantibodies-in-both-drug-responsive-and-resistant-focal-seizures-with-unknown-cause
#11
Gokcen Gozubatik-Celik, Cigdem Ozkara, Canan Ulusoy, Aysegul Gunduz, Sakir Delil, Naz Yeni, Erdem Tuzun
BACKGROUND: and Objective Autoimmunity is an emerging field of research in the etiology of different neurological disorders including epilepsy. We aimed to investigate the presence of neuronal autoantibodies in focal epilepsy with unknown cause and their clinical correlates in both drug-responsive and resistant patients. METHOD: Between 2009 and 2010 94 patients were prospectively enrolled, had their antibodies tested and clinically followed." An additional 50 age- and gender-matched controls were also tested for antibodies...
September 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28650064/-a-new-case-of-psychotic-break-as-the-presenting-symptom-of-anti-nmda-receptor-encephalitis-treatment-from-a-neuropsychiatric-approach
#12
P Hernaez-Goni, P Luna-Lario, J Tirapu-Ustarroz
INTRODUCTION: Limbic encephalitis generated by anti-N-methyl D-aspartate (NMDA) receptor antibodies is a severe acute neurological condition that is more prevalent in young females and is associated with an underlying tumour. The appearance of severe initial psychiatric signs and symptoms and the fact that it is accompanied by emotional disorders and severe cognitive impairment make it necessary to reconsider the contributions of neuropsychiatry to the diagnosis, development and treatment of the disease, since these have received little attention from researchers to date...
July 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28626780/igg-specific-cell-based-assay-detects-potentially-pathogenic-musk-abs-in-seronegative-mg
#13
Saif Huda, Patrick Waters, Mark Woodhall, Maria Isabel Leite, Leslie Jacobson, Anna De Rosa, Michelangelo Maestri, Roberta Ricciardi, Jeannine M Heckmann, Angelina Maniaol, Amelia Evoli, Judy Cossins, David Hilton-Jones, Angela Vincent
OBJECTIVE: To increase the detection of MuSK-Abs using a CBA and test their pathogenicity. METHODS: Sera from 69 MuSK-RIA-positive patients with myasthenia gravis (MG) (Definite MuSK-MG), 169 patients negative for MuSK-RIA and AChR-RIA (seronegative MG, SNMG), 35 healthy individuals (healthy controls, HCs), and 16 NMDA receptor-Ab-positive (NMDAR-Ab) disease controls were tested for binding to MuSK on a CBA using different secondary antibodies. RESULTS: Initially, in addition to 18% of SNMG sera, 11% of HC and 19% of NMDAR-Ab sera showed positive binding to MuSK-transfected cells; this low specificity was due to anti-IgG(H+L) detection of IgM bound nonspecifically to MuSK...
July 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28602919/the-fine-tuning-of-retinocollicular-topography-depends-on-reelin-signaling-during-early-postnatal-development-of-the-rat-visual-system
#14
Rachel Antonioli-Santos, Bruna Lanzillotta-Mattos, Cecília Hedin-Pereira, Claudio Alberto Serfaty
During postnatal development, neural circuits are extremely dynamic and develop precise connection patterns that emerge as a result of the elimination of synaptic terminals, a process instructed by molecular cues and patterns of electrical activity. In the rodent visual system, this process begins during the first postnatal week and proceeds during the second and third postnatal weeks as spontaneous retinal activity and finally use-dependent fine tuning takes place. Reelin is a large extracellular matrix glycoprotein able to affect several steps of brain development, from neuronal migration to the maturation of dendritic spines and use-dependent synaptic development...
June 8, 2017: Neuroscience
https://www.readbyqxmd.com/read/28570322/autoimmune-neurology-of-the-central-nervous-system
#15
W Oliver Tobin, Sean J Pittock
PURPOSE OF REVIEW: This article reviews the rapidly evolving spectrum of autoimmune neurologic disorders with a focus on those that involve the central nervous system, providing an understanding of how to approach the diagnostic workup of patients presenting with central nervous system symptoms or signs that could be immune mediated, either paraneoplastic or idiopathic, to guide therapeutic decision making. RECENT FINDINGS: The past decade has seen a dramatic increase in the discovery of novel neural antibodies and their targets...
June 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28547540/investigation-of-anti-neuronal-antibodies-in-status-epilepticus-of-unknown-etiology-a-prospective-study
#16
Murat Mert Atmaca, Erdem Tuzun, Ece Erdag, Nerses Bebek, Betul Baykan, Candan Gurses
There have been recent reports of antibody-mediated status epilepticus. The objective of our study was to investigate the prevalence of neuronal autoantibodies in patients with status epilepticus (SE) with unresolved etiology. The presence of neuronal autoantibodies was investigated prospectively in adult patients with SE who presented to our clinic between February 2012 and December 2013 with unresolved etiology. Clinical and electrophysiologic features of seropositive patients were recorded. Also, seronegative and seropositive patient groups were compared in terms of demographic and clinical features, treatment responses, and outcomes...
May 25, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28506503/extended-clinical-spectrum-of-anti-n-methyl-d-aspartate-receptor-encephalitis-in-children-a-case-series
#17
Ajay Goenka, Vivek Jain, Hiroki Nariai, Alfred Spiro, Mitchell Steinschneider
OBJECTIVE: There is a wide spectrum of clinical manifestations in children with anti-N-methyl-d-aspartate (NMDA) receptor antibody encephalitis from two different health care settings. METHODS: We describe our experience with 13 patients (median age, 7 years; range, 5 months to 19 years) presenting to tertiary referral centers in India and the United States. RESULTS: Initial manifestations were neurological (seizures or movement disorders) in eight patients, and psychiatric (e...
July 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28461116/anti-neuronal-anti-bodies-in-patients-with-early-psychosis
#18
O Mantere, M Saarela, T Kieseppä, T Raij, T Mäntylä, M Lindgren, E Rikandi, W Stoecker, B Teegen, J Suvisaari
It may be challenging to distinguish autoimmune encephalitis associated with anti-neuronal autoantibodies from primary psychiatric disorders. Here, serum was drawn from patients with a first-episode psychosis (n=70) or a clinical high-risk for psychosis (n=6) and controls (n=34). We investigated the serum prevalence of 24 anti-neuronal autoantibodies: IgG antibodies for anti-N-methyl-d-aspartate-type glutamate receptor (anti-NMDAR), glutamate and γ-aminobutyric acid alpha and beta receptors (GABA-a, GABA-b), alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPA), glycine receptor (GlyR), metabotropic glutamate receptor 1 and 5 (mGluR1, mGluR5), anti-Tr/Delta/notch-like epidermal growth factor-related receptor (DNER), contactin-associated protein-like 2 (CASPR2), myelin oligodendrocyte glycoprotein (MOG), glutamic acid decarboxylase-65 (GAD65), collapsin response mediator protein 5/crossveinless-2 (CV2), aquaporin-4 (AQP4), anti-dipeptidyl-peptidase-like protein-6 (DPPX), type 1 anti-neuronal nuclear antibody (ANNA-1, Hu), Ri, Yo, IgLON5, Ma2, zinc finger protein 4 (ZIC4), Rho GTPase-activating protein 26, amphiphysin, and recoverin, as well as IgA and IgM for dopamine-2-receptor (DRD2)...
April 28, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28439526/absence-of-nmda-receptor-antibodies-in-patients-with-ovarian-teratoma-without-encephalitis
#19
Siyin Gong, Muke Zhou, Gang Shi, Jian Guo, Ning Chen, Rong Yang, Li He, Dong Zhou
No abstract text is available yet for this article.
May 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28418206/anti-nmda-receptor-encephalitis-during-pregnancy-a-case-report-and-literature-review
#20
Xue Xiao, Shunping Gui, Peng Bai, Yi Bai, Dan Shan, Yayi Hu, Tri M Bui-Nguyen, Rong Zhou
Anti-N-methyl-d-aspartate receptor (anti-NMDA-R) encephalitis is an autoimmune disorder that was first described by Dr Vitaliani in 2005. In 2007, Dalmau et al. found anti-NMDA-R antibody expressed both in the hippocampus and prefrontal nerve cell membrane, finally proposing the diagnosis of autoimmune anti-NMDA-R encephalitis. Most of the patients are female (91%), with ages ranging from 4 to 76 years. The average age is 23 years, a birth peak age, although anti-NMDA-R encephalitis is rare during pregnancy...
April 2017: Journal of Obstetrics and Gynaecology Research
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