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https://www.readbyqxmd.com/read/28081431/clinical-characterization-of-autoimmune-encephalitis-and-psychosis
#1
Qinjian Hao, Dahai Wang, Lanting Guo, Bo Zhang
BACKGROUND AND PURPOSE: Autoimmune disorders are growing alarmingly high in prevalence across the globe. Autoimmune encephalitis has had a dramatic impact on the medical field, effectually altering diagnostic and treatment paradigms in regard to neuropsychiatric disorders. Our primary goal in conducting this study was to analyze the clinical characteristics of autoimmune encephalitis patients, with special focus on psychiatric presentations, in the West China Hospital and report patient prognoses after immunotherapy...
December 27, 2016: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28073143/demyelinating-polyneuropathy-in-a-case-of-anti-lgi1-encephalitis
#2
Gemma Tumminelli, Carla Battisti, Chiara Cioni, Andrea Mignarri, Pasquale Annunziata, And Antonio Federico
No abstract text is available yet for this article.
January 10, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28043063/investigation-of-neuronal-auto-antibodies-in-systemic-lupus-erythematosus-patients-with-epilepsy
#3
Zerrin Karaaslan, Esme Ekizoğlu, Pınar Tektürk, Ece Erdağ, Erdem Tüzün, Nerses Bebek, Candan Gürses, Betül Baykan
PURPOSE: Epilepsy is an important feature for neuropsychiatric involvement in systemic lupus erythematosus (SLE) with unknown mechanism. Our aim was to investigate the presence of neuronal auto-antibodies (NAbs) in neuropsychiatric SLE (NPSLE). METHODS: Eighteen SLE patients (17 females, 1 male) experiencing recurrent seizures were enrolled to this study. Their clinical characteristics, EEG and MRI findings and follow-up information were evaluated from their files...
December 14, 2016: Epilepsy Research
https://www.readbyqxmd.com/read/28043058/epilepsy-surgery-in-drug-resistant-temporal-lobe-epilepsy-associated-with-neuronal-antibodies
#4
Mar Carreño, Christian G Bien, Ali A Asadi-Pooya, Michael Sperling, Petr Marusic, Martin Elisak, Jose Pimentel, Tim Wehner, Rajiv Mohanraj, Juan Uranga, Asier Gómez-Ibáñez, Vicente Villanueva, Francisco Gil, Antonio Donaire, Nuria Bargalló, Jordi Rumià, Pedro Roldán, Xavier Setoain, Luis Pintor, Teresa Boget, Eva Bailles, Mercè Falip, Javier Aparicio, Josep Dalmau, Francesc Graus
We assessed the outcome of patients with drug resistant epilepsy and neuronal antibodies who underwent epilepsy surgery. Retrospective study, information collected with a questionnaire sent to epilepsy surgery centers. Thirteen patients identified, with antibodies to GAD (8), Ma2 (2), Hu (1), LGI1 (1) or CASPR2 (1). Mean age at seizure onset: 23 years. Five patients had an encephalitic phase. Three had testicular tumors and five had autoimmune diseases. All had drug resistant temporal lobe epilepsy (median: 20 seizures/month)...
December 15, 2016: Epilepsy Research
https://www.readbyqxmd.com/read/28026046/anti-lgi1-encephalitis-is-strongly-associated-with-hla-dr7-and-hla-drb4
#5
Agnes van Sonderen, Dave L Roelen, Johannes A Stoop, Robert M Verdijk, Geert W Haasnoot, Roland D Thijs, Paul W Wirtz, Marco W J Schreurs, Frans H J Claas, Peter A E Sillevis Smitt, Maarten J Titulaer
Leucine-rich glioma-inactivated1 (LGI1)-encephalitis is an antibody-associated inflammation of the limbic area. An autoimmune etiology is suspected but not proven yet. We performed HLA-analysis in 25 non-tumor anti-LGI1 patients and discovered a remarkably strong HLA-association. HLA-DR7 was present in 88% compared to 19.6% in healthy controls (p=4.1*10-11). HLA-DRB4 was present in all patients and in 46.5% controls (p=1.19*10-7). These findings support the autoimmune hypothesis. An exploratory analysis was performed in a small group of four tumor-LGI1 patients...
December 27, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/28026029/anti-lgi1-encephalitis-is-associated-with-unique-hla-subtypes
#6
Tae-Joon Kim, Soon-Tae Lee, Jangsup Moon, Jun-Sang Sunwoo, Jung-Ick Byun, Jung-Ah Lim, Yong-Won Shin, Jin Sun Jun, Han Sang Lee, Woo-Jin Lee, Ah Reaum Yang, Yunhee Choi, Kyung-Il Park, Keun-Hwa Jung, Ki-Young Jung, Manho Kim, Sang Kun Lee, Kon Chu
OBJECTIVE: Autoimmune encephalitis, represented by anti-leucine-rich glioma-inactivated 1 (anti-LGI1) and anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis, has increasing clinical significance based on recent discoveries of neuronal autoantibodies. However, its immunopathogenesis is not fully understood. Here, we investigated whether autoimmune encephalitis is associated with the human leukocyte antigen (HLA) subtypes. METHODS: We compared the HLA genotypes of 11 anti-LGI1 and 17 anti-NMDAR encephalitis patients to the control groups, which consisted of 210 epilepsy patients and 485 healthy Koreans...
December 27, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/27965002/prevalence-and-clinical-characteristics-of-serum-neuronal-cell-surface-antibodies-in-first-episode-psychosis-a-case-control-study
#7
Belinda R Lennox, Emma C Palmer-Cooper, Thomas Pollak, Jane Hainsworth, Jacqui Marks, Leslie Jacobson, Bethan Lang, Hannah Fox, Berne Ferry, Linda Scoriels, Hannah Crowley, Peter B Jones, Paul J Harrison, Angela Vincent
BACKGROUND: Psychosis is a common presenting feature in antibody-mediated encephalitis, for which prompt recognition and treatment usually leads to remission. We aimed to investigate whether people with circumscribed schizophrenia-like illnesses have such antibodies-especially antibodies against the N-methyl-D-aspartate receptor (NMDAR)-more commonly than do healthy controls. METHODS: We recruited patients aged 14-35 years presenting to any of 35 mental health services sites across England with first-episode psychosis, less than 6 weeks of treatment with antipsychotic medication, and a score of 4 or more on at least one selected Positive and Negative Syndrome Scale (PANSS) item...
January 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/27893017/evaluation-of-cognitive-deficits-and-structural-hippocampal-damage-in-encephalitis-with-leucine-rich-glioma-inactivated-1-antibodies
#8
Carsten Finke, Harald Prüss, Josephine Heine, Sigrid Reuter, Ute A Kopp, Florian Wegner, Florian Then Bergh, Sebastian Koch, Olav Jansen, Thomas Münte, Günther Deuschl, Klemens Ruprecht, Winfried Stöcker, Klaus-Peter Wandinger, Friedemann Paul, Thorsten Bartsch
Importance: Limbic encephalitis with leucine-rich, glioma-inactivated 1 (LGI1) antibodies is one of the most frequent variants of autoimmune encephalitis with antibodies targeting neuronal surface antigens. However, the neuroimaging pattern and long-term cognitive outcome are not well understood. Objective: To study cognitive outcome and structural magnetic resonance imaging (MRI) alterations in patients with anti-LGI1 encephalitis. Design, Setting, and Participants: A cross-sectional study was conducted at the Departments of Neurology at Charité-Universitätsmedizin Berlin and University Hospital Schleswig-Holstein, Kiel, Germany...
January 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/27781030/seizures-and-epilepsies-due-to-channelopathies-and-neurotransmitter-receptor-dysfunction-a-parallel-between-genetic-and-immune-aspects
#9
REVIEW
Agustina M Lascano, Christian M Korff, Fabienne Picard
Despite intensive research activity leading to many important discoveries, the pathophysiological mechanisms underlying seizures and epilepsy remain poorly understood. An important number of specific gene defects have been related to various forms of epilepsies, and autoimmunity and epilepsy have been associated for a long time. Certain central nervous system proteins have been involved in epilepsy or acute neurological diseases with seizures either due to underlying gene defects or immune dysfunction. Here, we focus on 2 of them that have been the object of particular attention and in-depth research over the past years: the N-methyl-D-aspartate receptor and the leucin-rich glioma-inactivated protein 1 (LGI1)...
September 2016: Molecular Syndromology
https://www.readbyqxmd.com/read/27777346/the-relevance-of-vgkc-positivity-in-the-absence-of-lgi1-and-caspr2-antibodies
#10
James B Lilleker, Matthew S Jones, Rajiv Mohanraj, Agnes van Sonderen, Marco W J Schreurs, Marienke A A M de Bruijn, Peter A E Sillevis Smitt, Maarten J Titulaer
No abstract text is available yet for this article.
October 25, 2016: Neurology
https://www.readbyqxmd.com/read/27760137/secretion-positive-lgi1-mutations-linked-to-lateral-temporal-epilepsy-impair-binding-to-adam22-and-adam23-receptors
#11
Emanuela Dazzo, Emanuela Leonardi, Elisa Belluzzi, Sandro Malacrida, Libero Vitiello, Elisa Greggio, Silvio C E Tosatto, Carlo Nobile
Autosomal dominant lateral temporal epilepsy (ADTLE) is a focal epilepsy syndrome caused by mutations in the LGI1 gene, which encodes a secreted protein. Most ADLTE-causing mutations inhibit LGI1 protein secretion, and only a few secretion-positive missense mutations have been reported. Here we describe the effects of four disease-causing nonsynonymous LGI1 mutations, T380A, R407C, S473L, and R474Q, on protein secretion and extracellular interactions. Expression of LGI1 mutant proteins in cultured cells shows that these mutations do not inhibit protein secretion...
October 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27737869/lgi1-encephalitis-a-disease-of-jerks-and-confusion
#12
Deepa Dash, Madhavi Tripathi, Kavish Ihtisham, Manjari Tripathi
Limbic encephalitis is a group of immune-mediated disorders that includes the classic paraneoplastic encephalitic syndrome and the recently described non-paraneoplastic autoimmune encephalitis most of which target the extracellular antigens. We present a case of 70-year-old man who presented with rapidly progressive cognitive decline and refractory faciobrachial dystonic seizures and demonstrated seropositivity for leucine-rich, glioma-inactivated protein 1 antibodies. After immunomodulation, the patient had dramatic improvement in the cognitive functioning and in seizure control...
October 13, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27717669/the-lgi1-adam22-protein-complex-in-synaptic-transmission-and-synaptic-disorders
#13
Yuko Fukata, Norihiko Yokoi, Yuri Miyazaki, Masaki Fukata
Physiological functioning of the brain requires fine-tuned synaptic transmission, and its dysfunction causes various brain disorders such as autism, dementia, and epilepsy. It is therefore extremely important to identify and characterize key regulators of synaptic function. In particular, disease-related synaptic proteins, such as autism-related neurexin-neuroligin and psychiatric disorder-related NMDA receptor, have attracted considerable attention. Recent basic and clinical research has highlighted critical roles of a ligand-receptor complex, LGI1-ADAM22, in synaptic transmission and brain function, as mutations in the LGI1 gene cause autosomal dominant lateral temporal lobe epilepsy and autoantibodies to LGI1 cause limbic encephalitis which is characterized by memory loss and seizures...
October 4, 2016: Neuroscience Research
https://www.readbyqxmd.com/read/27713024/microrna-877-5p-is-involved-in-the-trovafloxacin-induced-liver-injury
#14
Ryo Mitsugi, Tomoo Itoh, Ryoichi Fujiwara
Trovafloxacin develops severe hepatotoxicity; however, the underlying mechanism of the trovafloxacin-induced liver injury has not been cleared. It has been shown that microRNAs (miRNAs) can be involved in the development of drug-induced liver injuries. We performed a miRNA microarray analysis to identify hepatic miRNAs that were induced or reduced by trovafloxacin in mice. It was demonstrated that miR-877-5p was the most increased miRNA in the mouse liver 24h after the trovafloxacin administration. To investigate the role of miR-877-5p in the liver, we established miR-877-5p-overexpressed HepG2 cells...
November 30, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27667487/-voltage-gated-potassium-channel-complex-antibodies-associated-encephalopathy-and-related-diseases
#15
Osamu Watanabe
Voltage-gated potassium channel (VGKC) complex antibodies are auto-antibodies, initially identified in acquired neuromyotonia (aNMT; Isaacs' syndrome), which cause muscle cramps and difficulty in opening the palm of the hands. Subsequently, these antibodies were found in patients presenting with aNMT along with psychosis, insomnia, and dysautonomia, collectively termed Morvan's syndrome (MoS), and in a limbic encephalopathy (LE) patient with prominent amnesia and frequent seizures. Typical LE cases have a distinctive adult-onset, frequent, brief dystonic seizure semiology that predominantly affects the arms and ipsilateral face...
September 2016: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/27609625/prevalence-of-serum-anti-neuronal-autoantibodies-in-patients-admitted-to-acute-psychiatric-care
#16
M Schou, S G Sæther, K Borowski, B Teegen, D Kondziella, W Stoecker, A Vaaler, S K Reitan
BACKGROUND: Autoimmune encephalitis associated with anti-neuronal antibodies may be challenging to distinguish from primary psychiatric disorders. The significance of anti-neuronal antibodies in psychiatric patients without clear evidence of autoimmune encephalitis is unknown. We investigated the serum prevalence of six anti-neuronal autoantibodies in a cohort of unselected patients admitted to acute psychiatric care. METHOD: Serum was drawn from 925 patients admitted to acute psychiatric in-patient care...
December 2016: Psychological Medicine
https://www.readbyqxmd.com/read/27604620/immunoadsorption-or-plasma-exchange-in-the-treatment-of-autoimmune-encephalitis-a-pilot-study
#17
Josephine Heine, Lam-Thanh Ly, Ina Lieker, Torsten Slowinski, Carsten Finke, Harald Prüss, Lutz Harms
Therapeutic apheresis has emerged as a major treatment option for autoantibody-associated inflammatory diseases of the nervous system. This includes patients with autoimmune encephalitides caused by antibodies against neuronal proteins. Plasma exchange (PE) and immunoadsorption (IA) constitute two possibilities to eliminate pathogenic antibodies from patients' plasma, but their efficacy and safety has not been prospectively assessed in larger patient groups of autoimmune encephalitides. In a prospective observational case control study, we, therefore, investigated the disease courses and treatment effects of 21 patients with autoimmune encephalitis associated with NMDAR, LGI1, CASPR2, GAD, mGluR5 and Hu antibodies...
December 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27590293/anti-lgi1-encephalitis-clinical-syndrome-and-long-term-follow-up
#18
Agnes van Sonderen, Roland D Thijs, Elias C Coenders, Lize C Jiskoot, Esther Sanchez, Marienke A A M de Bruijn, Marleen H van Coevorden-Hameete, Paul W Wirtz, Marco W J Schreurs, Peter A E Sillevis Smitt, Maarten J Titulaer
OBJECTIVE: This nationwide study gives a detailed description of the clinical features and long-term outcome of anti-leucine-rich glioma-inactivated 1 (LGI1) encephalitis. METHODS: We collected patients prospectively from October 2013, and retrospectively from samples sent to our laboratory from January 2007. LGI1 antibodies were confirmed with both cell-based assay and immunohistochemistry. Clinical information was obtained in interviews with patients and their relatives and from medical records...
October 4, 2016: Neurology
https://www.readbyqxmd.com/read/27577085/mapping-autoantigen-epitopes-molecular-insights-into-autoantibody-associated-disorders-of-the-nervous-system
#19
REVIEW
Nese Sinmaz, Tina Nguyen, Fiona Tea, Russell C Dale, Fabienne Brilot
BACKGROUND: Our knowledge of autoantibody-associated diseases of the central (CNS) and peripheral (PNS) nervous systems has expanded greatly over the recent years. A number of extracellular and intracellular autoantigens have been identified, and there is no doubt that this field will continue to expand as more autoantigens are discovered as a result of improved clinical awareness and methodological practice. In recent years, interest has shifted to uncover the target epitopes of these autoantibodies...
August 30, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27566001/neuropsychological-and-fdg-pet-profiles-in-vgkc-autoimmune-limbic-encephalitis
#20
Alessandra Dodich, Chiara Cerami, Sandro Iannaccone, Alessandra Marcone, Pierpaolo Alongi, Chiara Crespi, Nicola Canessa, Francesca Andreetta, Andrea Falini, Stefano F Cappa, Daniela Perani
BACKGROUND: Limbic encephalitis (LE) is characterized by an acute or subacute onset with memory impairments, confusional state, behavioral disorders, variably associated with seizures and dystonic movements. It is due to inflammatory processes that selectively affect the medial temporal lobe structures. Voltage-gate potassium channel (VGKC) autoantibodies are frequently observed. In this study, we assessed at the individual level FDG-PET brain metabolic dysfunctions and neuropsychological profiles in three autoimmune LE cases seropositive for neuronal VGKC-complex autoantibodies...
October 2016: Brain and Cognition
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