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Autoimmune neuropsychiatric

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https://www.readbyqxmd.com/read/29433523/a-clinical-approach-to-new-onset-psychosis-associated-with-immune-dysregulation-the-concept-of-autoimmune-psychosis
#1
Souhel Najjar, Johann Steiner, Amanda Najjar, Karl Bechter
Growing data point to the overlap between psychosis and pathological processes associated with immunological dysregulation as well as inflammation. Notably, the recent discovery of antibodies against synaptic and neuronal cell membrane proteins such as anti-N-methyl-D-aspartate receptor provides more direct evidence of the etiological connection between autoimmunity and subsequent hazard of psychosis. Here, we advocate the use of term "autoimmune psychosis," as this term suggests that autoimmune disorders can masquerade as drug-resistant primary psychosis, and this subtype of psychosis has anatomical and immunological footprints in the brain, despite the frequent absence of structural abnormalities on conventional brain MRI...
February 13, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29431056/characteristics-of-systemic-lupus-erythematosus-in-a-sample-of-the-egyptian-population-a-retrospective-cohort-of-1109-patients-from-a-single-center
#2
K T El Hadidi, B M Medhat, N M Abdel Baki, H Abdel Kafy, W Abdelrahaman, A Y Yousri, D H Attia, M Eissa, D El Dessouki, I Elgazzar, F T Elgengehy, N El Ghobashy, H El Hadary, G El Mardenly, H El Naggar, A M El Nahas, R M El Refai, H Allah El Rwiny, R M Elsman, M Galal, S Ghoniem, L A Maged, S M Sally, H Naji, S Saad, M Shaaban, M Sharaf, N Sobhy, R M Soliman, T S El Hadidi
Introduction Systemic lupus erythematosus (SLE) is a multisystem autoimmune disease that can vary among different ethnic and racial groups. Objective The objective of this paper is to study the prevalence of various manifestations of SLE in a sample of the Egyptian population. Patients and methods Information in this study was derived from the medical records of SLE patients who sought medical advice at a private clinic in Cairo from January 1980 to June 2016. Results This study included 1109 SLE patients, of whom 114 (10...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29426955/uncoupling-the-widespread-occurrence-of-anti-nmdar1-autoantibodies-from-neuropsychiatric-disease-in-a-novel-autoimmune-model
#3
Hong Pan, Bárbara Oliveira, Gesine Saher, Ekrem Dere, Daniel Tapken, Marina Mitjans, Jan Seidel, Janina Wesolowski, Debia Wakhloo, Christina Klein-Schmidt, Anja Ronnenberg, Kerstin Schwabe, Ralf Trippe, Kerstin Mätz-Rensing, Stefan Berghoff, Yazeed Al-Krinawe, Henrik Martens, Martin Begemann, Winfried Stöcker, Franz-Josef Kaup, Reinhard Mischke, Susann Boretius, Klaus-Armin Nave, Joachim K Krauss, Michael Hollmann, Fred Lühder, Hannelore Ehrenreich
Autoantibodies of the IgG class against N-methyl-D-aspartate-receptor subunit-NR1 (NMDAR1-AB) were considered pathognomonic for anti-NMDAR encephalitis. This view has been challenged by the age-dependent seroprevalence (up to >20%) of functional NMDAR1-AB of all immunoglobulin classes found in >5000 individuals, healthy or affected by different diseases. These findings question a merely encephalitogenic role of NMDAR1-AB. Here, we show that NMDAR1-AB belong to the normal autoimmune repertoire of dogs, cats, rats, mice, baboons, and rhesus macaques, and are functional in the NMDAR1 internalization assay based on human IPSC-derived cortical neurons...
February 9, 2018: Molecular Psychiatry
https://www.readbyqxmd.com/read/29423662/environmental-exposures-and-neuropsychiatric-disorders-what-role-does-the-gut-immune-brain-axis-play
#4
REVIEW
Shannon Delaney, Mady Hornig
PURPOSE OF REVIEW: Evidence is growing that environmental exposures-including xenobiotics as well as microbes-play a role in the pathogenesis of many neuropsychiatric disorders. Underlying mechanisms are likely to be complex, involving the developmentally sensitive interplay of genetic/epigenetic, detoxification, and immune factors. Here, we review evidence supporting a role for environmental factors and disrupted gut-immune-brain axis function in some neuropsychiatric conditions. RECENT FINDINGS: Studies suggesting the involvement of an altered microbiome in triggering CNS-directed autoimmunity and neuropsychiatric disturbances are presented as an intriguing example of the varied mechanisms by which environmentally induced gut-immune-brain axis dysfunction may contribute to adverse brain outcomes...
February 8, 2018: Current Environmental Health Reports
https://www.readbyqxmd.com/read/29417305/anti-nmda-receptor-encephalitis-presenting-as-postpartum-psychosis-a-clinical-description-and-review
#5
Mukku Shiva Shanker Reddy, Harish Thippeswamy, Sundarnag Ganjekar, Madhu Nagappa, Anita Mahadevan, H R Arvinda, Prabha S Chandra, Arun B Taly
Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is increasingly being recognised to be associated with protean neuropsychiatric manifestations. Anti-NMDAR encephalitis is considered to be the most common amongst the autoimmune-mediated encephalitic disorders. It is caused by the autoantibodies against GluN1 subunits of N-methyl-D-aspartate (NMDA) receptor and manifests with prominent psychiatric symptoms, especially during the initial phase of illness. Literature anti-NMDAR encephalitis presenting with postpartum psychosis is scant...
February 7, 2018: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/29398245/cans-childhood-acute-neuropsychiatric-syndromes
#6
REVIEW
Federica Zibordi, Zorzi Giovanna, Carecchio Miryam, Nardocci Nardo
The terms Pediatric Autoimmune Neuropsychiatric disorders associated with streptococcal infections (PANDAS), Pediatric acute-onset neuropsychiatric Syndrome (PANS), and Childhood Acute Neuropsychiatric Symptoms (CANS) have been used to describe certain acute onset neuropsychiatric pediatric disorders. This clinical characteristic was unusually abrupt onset of obsessive compulsive symptoms and/or severe eating restrictions and concomitant cognitive, behavioral or neurological symptoms. Because the CANS/PANS criteria define a broad spectrum of neuropsychiatric conditions, the syndrome is presumed to result from a variety of disease mechanisms and to have multiple etiologies, ranging from postinfectious autoimmune and neuroinflammatory disorders to toxic, endocrine or metabolic disorders...
February 1, 2018: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/29382712/corticosterone-production-during-repeated-social-defeat-causes-monocyte-mobilization-from-the-bone-marrow-glucocorticoid-resistance-and-neurovascular-adhesion-molecule-expression
#7
Anzela Niraula, Yufen Wang, Jonathan P Godbout, John F Sheridan
Repeated social defeat (RSD) stress promotes the release of bone marrow-derived monocytes into circulation that are recruited to the brain, where they augment neuroinflammation and cause prolonged anxiety-like behavior. Physiological stress activates the sympathetic nervous system (SNS) and hypothalamic-pituitary-adrenal gland (HPA) axis, and both of these systems play a role in the physiological, immunological, and behavioral responses to stress. The purpose of this study was to delineate the role of HPA activation and corticosterone production in the immunological responses to stress in male C57/BL6 mice...
January 30, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29379898/anti-ma-1-and-anti-ma-2-antibodies-in-isolated-fatal-hypothalamitis
#8
Mario Bustos, Hara Berger, Zeina Carolina Hannoush, Alejandro Ayala, Rochelle Freire, Atil Yilmaz Kargi
Lymphocytic hypothalamitis (LHT) is a rare disease characterized by pituitary dysfunction, autonomic instability, metabolic disturbances, and neuropsychiatric disorders. We report the case of a 30-year-old man found to have LHT that progressed despite treatment with methylprednisolone and intravenous immunoglobulin (IVIG). A literature review was conducted to identify prior studies pertaining to LHT. Our patient presented with several weeks of fatigue, cold intolerance, weight loss, confusion, and headache...
February 1, 2018: Journal of the Endocrine Society
https://www.readbyqxmd.com/read/29376438/n-methyl-d-aspartate-receptor-encephalitis-laboratory-diagnostics-and-comparative-clinical-features-in-adults-and-children
#9
Matteo Gastaldi, Margherita Nosadini, Marianna Spatola, Stefano Sartori, Diego Franciotta
N-methyl-D-aspartate receptor (NMDAR) encephalitis is the most common autoimmune encephalitis due to autoantibodies against neuronal surface antigens, can affect both children and adults, leading to neurological and neuropsychological sequelae. However, it is potentially treatable and the prompt start of immunotherapy associates with better prognosis. Conversely, misdiagnosis can be harmful. The detection of NMDAR antibodies in serum and cerebrospinal fluid plays a pivotal role in the diagnostic work-up. Reliable methods for NMDAR antibody detection are thus fundamental to assure accurate diagnosis and allow early treatments...
February 2018: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29370834/highly-selective-inhibition-of-bruton-s-tyrosine-kinase-attenuates-skin-and-brain-disease-in-murine-lupus
#10
Samantha A Chalmers, Jing Wen, Jessica Doerner, Ariel Stock, Carla M Cuda, Hadijat M Makinde, Harris Perlman, Todd Bosanac, Deborah Webb, Gerald Nabozny, Jay S Fine, Elliott Klein, Meera Ramanujam, Chaim Putterman
BACKGROUND: Systemic lupus erythematosus (SLE) is a systemic autoimmune disease that affects different end organs, including skin and brain. We and others have previously shown the importance of macrophages in the pathogenesis of cutaneous and neuropsychiatric lupus. Additionally, autoantibodies produced by autoreactive B cells are thought to play a role in both the skin and central nervous system pathologies associated with SLE. METHODS: We used a novel inhibitor of Bruton's tyrosine kinase (BTK), BI-BTK-1, to target both macrophage and B cell function in the MRL-lpr/lpr murine model of SLE, and examined the effect of treatment on skin and brain disease...
January 25, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29364387/non-inflammatory-cerebrospinal-fluid-delays-the-diagnosis-and-start-of-immunotherapy-in-anti-nmdar-encephalitis
#11
Mariana Espinola-Nadurille, Paola Bautista-Gomez, Jose Flores, Veronica Rivas-Alonso, Rodrigo Perez-Esparza, Rodolfo Solís-Vivanco, Steven Vargas-Cañas
Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a form of autoimmune encephalopathy that presents with a wide variety of symptoms, including neuropsychiatric manifestations. The authors' aim for this study was to analyze the results of paraclinical studies of patients with a diagnosis of anti-NMDAR encephalitis and the association between symptom onset and diagnosis, and start of immunotherapy. Retrospective data of 29 patients with anti-NMDAR encephalitis were gathered and analyzed. Abnormal EEG was found in 27 patients (93...
January 2018: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/29364334/extrahepatic-manifestations-associated-with-chronic-hepatitis-c-virus-infection
#12
A Flores-Chávez, J A Carrion, X Forns, M Ramos-Casals
Chronic hepatitis C virus (HCV) infection has been associated with both organ-specific and systemic autoimmune diseases, with cryoglobulinemia being the most frequent associated disease. Experimental, virologic, and clinical evidence have demon-strated a close association between HCV infection and some systemic autoimmune diseases, especially Sjögren's syndrome, but also rheumatoid arthritis and lupus. A higher prevalence of hematological processes has also been described in patients with HCV infection, including cytopenias and lymphoproliferative disorders (B-cell lymphoma)...
December 2017: Revista Española de Sanidad Penitenciaria
https://www.readbyqxmd.com/read/29364283/a-simple-cell-based-immunofluorescence-assay-to-detect-autoantibody-against-the-n-methyl-d-aspartate-nmda-receptor-in-blood
#13
Chia-Hsiang Chen, Yu-Syuan Chang
The presence of anti-NMDA receptor autoantibody can cause various neuropsychiatric symptoms in the affected patients, termed anti-NMDA receptor autoimmune encephalitis. Detection of the specific autoantibody against the NMDA receptor in the blood or cerebrospinal fluid (CSF) is essential for the accurate diagnosis of this condition. The NMDA receptor is an ion channel protein complex that contains four subunits, including two mandatory NMDA receptor subunit 1 (NR1) and one or two NMDA receptor subunit 2A (NR2A), NMDA receptor subunit 2B (NR2B), NMDA receptor subunit 2C (NR2C), or NMDA receptor subunit 2D (NR2D)...
January 9, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29321714/cavum-vergae-liability-and-steroid-treatment-manic-episode-brain-imaging-findings-and-clinical-follow-up-of-a-systemic-lupus-erythematosus-case
#14
Emre Misir, İbrahim Tolga Binbay, Bilge Targitay, Hidayet Ece Arat, Gerçek Can, Köksal Alptekin
Systemic lupus erythematosus (SLE) or Lupus is a chronic and idiopathic autoimmune connective tissue disease that involves several organs and organ systems. SLE may lead to a group of psychiatric manifestations, including delirium, anxiety disorders, cognitive dysfunction, mood disorders, and psychosis, which are caused by organic or non-organic factors. In addition, it is thought that the most common cause of neuropsychiatric lupus is corticosteroid use; central nervous system involvement and inflammatory processes also have an important role in the development of psychiatric manifestations...
December 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/29303953/voltage-gated-potassium-channel-antibody-autoimmune-encephalopathy-presenting-with-isolated-psychosis-in-an-adolescent
#15
David A Kahn
Antibody-mediated encephalopathies associated with serum or cerebrospinal fluid antibodies directed against neuronal structures may present with a multitude of neuropsychiatric syndromes. Although some of the antibody-driven conditions are now well recognized in adults (eg, N-methyl-D-aspartate receptor antibody encephalitis), the spectrum of neuropsychiatric manifestations in the pediatric population is less clear. Psychosis, confusion, catatonia, and additional behavioral changes, along with seizures, encephalopathy, and movement disorders, may be initial manifestations or concurrent features in all age groups...
November 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/29303952/voltage-gated-potassium-channel-antibody-autoimmune-encephalopathy-presenting-with-isolated-psychosis-in-an-adolescent
#16
Natalie C Pon, Kimberly M Houck, Eyal Muscal, Sindhu A Idicula
Antibody-mediated encephalopathies associated with serum or cerebrospinal fluid antibodies directed against neuronal structures may present with a multitude of neuropsychiatric syndromes. Although some of the antibody-driven conditions are now well recognized in adults (eg, N-methyl-D-aspartate receptor antibody encephalitis), the spectrum of neuropsychiatric manifestations in the pediatric population is less clear. Psychosis, confusion, catatonia, and additional behavioral changes, along with seizures, encephalopathy, and movement disorders, may be initial manifestations or concurrent features in all age groups...
November 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/29289523/principles-and-approaches-to-the-treatment-of-immune-mediated-movement-disorders
#17
REVIEW
Shekeeb S Mohammad, Russell C Dale
Immune mediated movement disorders include movement disorders in the context of autoimmune encephalitis such as anti-NMDAR encephalitis, post-infectious autoimmune movement disorders such as Sydenham chorea, paraneoplastic autoimmune movement disorders such as opsoclonus myoclonus ataxia syndrome, and infection triggered conditions such as paediatric acute neuropsychiatric syndrome. This review focuses on the approach to treatment of immune mediated movement disorders, which requires an understanding of the immunopathogenesis, whether the disease is destructive or 'altering', and the natural history of disease...
December 19, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/29273109/big-data-reveal-insights-into-alopecia-areata-comorbidities
#18
Chean Ping Lim, Rachel K Severin, Lynn Petukhova
Autoimmune diseases create a substantial burden of disease, and alopecia areata is among the more prevalent forms. Comorbidities are medical conditions that tend to occur together and may provide etiologic insights, suggest novel therapeutic strategies, and help patients and family members understand the risk of other health conditions. It is well established that having one autoimmune disease increases risk for others because of an underlying shared biology. Precision medicine initiatives are creating vast amounts of data that allow us to efficiently identify comorbidities...
January 2018: Journal of Investigative Dermatology. Symposium Proceedings
https://www.readbyqxmd.com/read/29233751/differential-binding-of-antibodies-in-pandas-patients-to-cholinergic-interneurons-in-the-striatum
#19
Luciana Frick, Maximiliano Rapanelli, Kantiya Jindachomthong, Paul Grant, James F Leckman, Susan Swedo, Kyle Williams, Christopher Pittenger
Pediatric Autoimmune Neuropsychiatric Disorder Associated with Streptococcus, or PANDAS, is a syndrome of acute childhood onset of obsessive-compulsive disorder and other neuropsychiatric symptoms in the aftermath of an infection with Group A beta-hemolytic Streptococcus (GABHS). Its pathophysiology remains unclear. PANDAS has been proposed to result from cross-reactivity of antibodies raised against GABHS with brain antigens, but the targets of these antibodies are unclear and may be heterogeneous. We developed an in vivo assay in mice to characterize the cellular targets of antibodies in serum from individuals with PANDAS...
December 9, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29229361/an-updated-literature-review-on-maternal-fetal-and-reproductive-disorders-of-toxoplasma-gondii-infection
#20
REVIEW
S Fallahi, A Rostami, M Nourollahpour Shiadeh, H Behniafar, S Paktinat
BACKGROUND: Toxoplasma gondii infection is one of the most prevalent infectious disease with worldwide distribution. Congenital toxoplasmosis is annually responsible for 1.20 million disability-adjusted life years around the world, but often it is overlooked many countries. METHODS: We performed an updated review to summarize the current researches on fetal, neonatal and maternal consequences of T. gondii infection and also adverse effects of toxoplasmosis on women reproductive organs...
December 8, 2017: Journal of Gynecology Obstetrics and Human Reproduction
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