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https://www.readbyqxmd.com/read/28087666/dysregulation-of-b-cell-repertoire-formation-in-myasthenia-gravis-patients-revealed-through-deep-sequencing
#1
Jason A Vander Heiden, Panos Stathopoulos, Julian Q Zhou, Luan Chen, Tamara J Gilbert, Christopher R Bolen, Richard J Barohn, Mazen M Dimachkie, Emma Ciafaloni, Teresa J Broering, Francois Vigneault, Richard J Nowak, Steven H Kleinstein, Kevin C O'Connor
Myasthenia gravis (MG) is a prototypical B cell-mediated autoimmune disease affecting 20-50 people per 100,000. The majority of patients fall into two clinically distinguishable types based on whether they produce autoantibodies targeting the acetylcholine receptor (AChR-MG) or muscle specific kinase (MuSK-MG). The autoantibodies are pathogenic, but whether their generation is associated with broader defects in the B cell repertoire is unknown. To address this question, we performed deep sequencing of the BCR repertoire of AChR-MG, MuSK-MG, and healthy subjects to generate ∼518,000 unique VH and VL sequences from sorted naive and memory B cell populations...
January 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28087067/-successful-use-of-sugammadex-for-caesarean-section-in-a-patient-with-myasthenia-gravis
#2
Lokman Soyoral, Ugur Goktas, Muhammed Bilal Cegin, Volkan Baydi
Myasthenia gravis is an autoimmune disorder that is characterized by muscle weakness that fluctuates, worsening with exertion, and improving with rest. Diagnosis of myasthenia gravis is made following clinical and physical examination and is confirmed by serum immunoassays to measure autoantibody levels. Myasthenia gravis especially when associated with pregnancy is a high-risk disease, and its course is unpredictable. We described the second report about use of sugammadex after rocuronium for a caesarean delivery with myasthenia gravis, but, unlike our case that formerly was diagnosed with myasthenia gravis, the patient was extubated on postoperative successfully and we did not encounter any respiratory problems...
January 10, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28079801/acute-necrotizing-retinal-vasculitis-as-onset-of-systemic-lupus-erythematosus-a-case-report
#3
Simeon Monov, Ruska Hristova, Rositza Dacheva, Reni Toncheva, Russka Shumnalieva, Viara Shoumnalieva-Ivanova, Daniela Monova
RATIONALE: Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by autoantibody production, complement activation, and deposition of immune complexes in tissues and organs. SLE can involve any region of the visual system. Although ocular manifestations are not part of the classification criteria for SLE, they can be observed in up to one-third of the patients with SLE. They are rarely reported at the time of disease onset. Retinal vasculitis is usually associated with active generalized disease...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079504/anti-carbonic-anhydrase-autoantibodies-and-serum-beta-2-microglobulin-correlate-with-the-clinessdai-score-in-patients-with-sj%C3%A3-gren-s-syndrome
#4
Marja Pertovaara, Seppo Parkkila, Markku Korpela
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January 5, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28078733/therapeutic-apheresis-in-immunologic-renal-and-neurological-diseases
#5
REVIEW
Rolf Bambauer, Reinhard Latza, Daniel Burgard, Ralf Schiel
Since the mid 1970s, when membrane modules became available, plasma separation techniques have gained in importance especially in the past few years. The advantages of this method are a complete separation of the corpuscular components from the plasma and due to increased blood flow rate and higher efficacy. Systemic autoimmune diseases based on an immune pathogenesis produce autoantibodies and circulating immune complexes, which cause inflammation in the tissues of various organs. In most cases, these diseases have a poor prognosis without treatment...
January 12, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28078322/diagnostic-dilemma-in-discordant-thyroid-function-tests-due-to-thyroid-hormone-autoantibodies
#6
Panudda Srichomkwun, Neal H Scherberg, Jasminka Jakšić, Samuel Refetoff
OBJECTIVE: Assay interference could be the cause of abnormal thyroid function tests. Early recognition prevents inappropriate patient management. The objective of this report is to present a case with discordant thyroid function tests in different thyroid assay platforms due to thyroid autoantibodies. METHODS: We present a case her family, laboratory data and methods that investigate immunoassay interference. RESULTS: A 21-year-old woman with autoimmune thyroid disease was treated for hypothyroidism with levothyroxine and noted to have elevated total and free thyroxine, free triiodothyronine but normal thyroid-stimulating hormone...
2017: AACE Clin Case Rep
https://www.readbyqxmd.com/read/28077518/th17-cytokine-responses-in-lyme-disease-correlate-with-borreliaburgdorferi-antibodies-during-early-infection-in-patients-with-erythema-migrans-and-with-autoantibodies-late-in-the-illness-in-patients-with-antibiotic-refractory-lyme-arthritis
#7
Klemen Strle, Katherine B Sulka, Annalisa Pianta, Jameson T Crowley, Sheila L Arvikar, Anthony Anselmo, Ruslan Sadreyev, Allen C Steere
BACKGROUND: Control of Lyme disease is attributed predominantly to innate and adaptive TH1 immune responses, whereas the role of TH17 responses is less clear. Here we characterized these inflammatory responses in patients with erythema migrans (EM) or Lyme arthritis (LA) to elucidate their role early and late in the infection. METHODS: Levels of 21 cytokines and chemokines, representative of innate, TH1, and TH17 immune responses, were assessed by Luminex in acute and convalescent sera from 91 EM patients, in serum and synovial fluid from 141 LA patients, and in serum from 57 healthy subjects...
January 11, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28076899/genome-wide-association-analysis-reveals-genetic-heterogeneity-of-sj%C3%A3-gren-s-syndrome-according-to-ancestry
#8
Kimberly E Taylor, Quenna Wong, David M Levine, Caitlin McHugh, Cathy Laurie, Kimberly Doheny, Mi Y Lam, Alan N Baer, Stephen Challacombe, Hector Lanfranchi, Morten Schiødt, M Srinivasan, Hisanori Umehara, Frederick B Vivino, Yan Zhao, Stephen Shiboski, Troy E Daniels, John S Greenspan, Caroline H Shiboski, Lindsey A Criswell
OBJECTIVE: Sjögren's Syndrome (SS) is a systemic autoimmune disease affecting primarily the lacrimal and salivary glands. The Sjögren's International Collaborative Clinical Alliance (SICCA) is an international multisite observational study whose participants have been genotyped on the Omni 2.5M platform and undergone deep phenotyping using common protocol-directed methods, providing a unique opportunity to examine the genetic etiology of SS across ancestry and disease subsets. METHODS: We perform GWAS analyses utilizing dbGaP controls on all subjects (1405 cases, 1622 SICCA controls, 3125 external controls), European (similarly 585, 966, 2580), and Asian (similarly 460, 224, 901) with ancestry adjustments via principal component analyses...
January 11, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28076499/association-between-the-clinical-severity-of-oral-lichen-planus-and-anti-tpo-level-in-thyroid-patients
#9
Milad Alikhani, Parichehr Ghalaiani, Elham Askariyan, Zahra Ahmadi Khunsaraki, Atefeh Tavangar, Aliasghar Naderi
This study considered a possible relationship between the severity of oral lichen planus (OLP), serum anti-TPO autoantibodies (TPOAb) titer and thyroid disease in OLP patients. Forty-six OLP patients with positive TPOAb results (> 35 IU/ml) who had also been diagnosed with thyroid disease were included in the study group. The control group consisted of 46OLP patients with no thyroid disease. The study and control groups (92) were divided to two subgroups of erosive OLP (EOLP) and non-erosive OLP (NEOLP)...
January 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28075491/review-integrated-classification-of-inflammatory-myopathies
#10
Y Allenbach, O Benveniste, H-H Goebel, W Stenzel
Inflammatory myopathies comprise a multitude of diverse diseases, most often occurring in complex clinical settings. In order to ensure accurate diagnosis, multidisciplinary expertise is required. Here, we propose a comprehensive myositis classification that incorporates clinical, morphological and molecular data as well as autoantibody profile. This review focuses on recent advances in myositis research, in particular, the correlation between autoantibodies and morphological or clinical phenotypes that can be used as the basis for an 'integrated' classification system...
January 11, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28074593/microtubule-associated-protein-map-1b-novel-paraneoplastic-biomarker-running-head-map-1b-igg-novel-paraneoplastic-biomarker
#11
Avi Gadoth, Thomas J Kryzer, Jim Fryer, Andrew McKeon, Vanda A Lennon, Sean J Pittock
To report the identification of microtubule associated protein (MAP)1B as the antigen of the previously described PCA-2 antibody, its frequency and clinical, oncological and serological associations. Methods Archival serum or cerebrospinal fluid (CSF) specimens were available from 96 of 118 consecutive PCA-2-IgG-seropositive patients identified 1993-2016. The autoantigen, defined in mouse brain lysate by western blot and mass spectrometry, was confirmed by dual immunohistochemical staining using commercial antibodies...
January 11, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28073956/the-effect-of-rheumatoid-arthritis-associated-autoantibodies-on-the-incidence-of-cardiovascular-events-in-a-large-inception-cohort-of-early-inflammatory-arthritis
#12
Lillian J Barra, Janet E Pope, Carol Hitchon, Gilles Boire, Orit Schieir, Daming Lin, Carter J Thorne, Diane Tin, Edward C Keystone, Boulos Haraoui, Shahin Jamal, Vivian P Bykerk
OBJECTIVE: RA is associated with an increased risk of cardiovascular events (CVEs). The objective was to estimate independent effects of RA autoantibodies on the incident CVEs in patients with early RA. METHODS: Patients were enrolled in the Canadian Early Inflammatory Arthritis Cohort, a prospective multicentre inception cohort. Incident CVEs, including acute coronary syndromes and cerebrovascular events, were self-reported by the patient and partially validated by medical chart review...
January 9, 2017: Rheumatology
https://www.readbyqxmd.com/read/28073955/establishment-of-a-rat-model-of-thrombosis-induced-by-intravenous-injection-of-anti-phosphatidylserine-prothrombin-complex-antibody
#13
Mai Yamada, Tamihiro Kawakami, Kohei Takashima, Yusuke Nishioka, Yuka Nishibata, Sakiko Masuda, Shigeru Yoshida, Utano Tomaru, Akihiro Ishizu
OBJECTIVE: Recent studies have suggested that aPS-PT antibody is one of the most relevant autoantibodies to APS. This study aimed to demonstrate the pathogenicity of aPS-PT antibody in vivo METHODS: At first, cultured rat vascular endothelial cells (RECs) were exposed to calf thymus-derived histones. Two hours later, lactate dehydrogenase release from the RECs and expression of PS on the cell surface were assessed. Next, we administered an i.v. injection of calf thymus-derived histones into Wistar rats (12...
January 9, 2017: Rheumatology
https://www.readbyqxmd.com/read/28073817/paranodal-dissection-in-chronic-inflammatory-demyelinating-polyneuropathy-with-antineurofascin-155-and-anticontactin-1-antibodies
#14
Haruki Koike, Masato Kadoya, Ken-Ichi Kaida, Shohei Ikeda, Yuichi Kawagashira, Masahiro Iijima, Daisuke Kato, Hidenori Ogata, Ryo Yamasaki, Noriyuki Matsukawa, Jun-Ichi Kira, Masahisa Katsuno, Gen Sobue
OBJECTIVE: To investigate the morphological features of chronic inflammatory demyelinating polyneuropathy (CIDP) with autoantibodies directed against paranodal junctional molecules, particularly focusing on the fine structures of the paranodes. METHODS: We assessed sural nerve biopsy specimens obtained from 9 patients with CIDP with antineurofascin-155 antibodies and 1 patient with anticontactin-1 antibodies. 13 patients with CIDP without these antibodies were also examined to compare pathological findings...
January 10, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28072728/upper-gastrointestinal-symptoms-in-autoimmune-gastritis-a-cross-sectional-study
#15
Marilia Carabotti, Edith Lahner, Gianluca Esposito, Maria Carlotta Sacchi, Carola Severi, Bruno Annibale
Autoimmune gastritis is often suspected for its hematologic findings, and rarely the diagnosis is made for the presence of gastrointestinal symptoms. Aims of this cross-sectional study were to assess in a large cohort of patients affected by autoimmune gastritis the occurrence and the pattern of gastrointestinal symptoms and to evaluate whether symptomatic patients are characterized by specific clinical features.Gastrointestinal symptoms of 379 consecutive autoimmune gastritis patients were systematically assessed and classified following Rome III Criteria...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28070615/detection-of-enteroviruses-in-stools-precedes-islet-autoimmunity-by-several-months-possible-evidence-for-slowly-operating-mechanisms-in-virus-induced-autoimmunity
#16
Hanna Honkanen, Sami Oikarinen, Noora Nurminen, Olli H Laitinen, Heini Huhtala, Jussi Lehtonen, Tanja Ruokoranta, Minna M Hankaniemi, Valérie Lecouturier, Jeffrey W Almond, Sisko Tauriainen, Olli Simell, Jorma Ilonen, Riitta Veijola, Hanna Viskari, Mikael Knip, Heikki Hyöty
AIMS/HYPOTHESIS: This case-control study was nested in a prospective birth cohort to evaluate whether the presence of enteroviruses in stools was associated with the appearance of islet autoimmunity in the Type 1 Diabetes Prediction and Prevention study in Finland. METHODS: Altogether, 1673 longitudinal stool samples from 129 case children who turned positive for multiple islet autoantibodies and 3108 stool samples from 282 matched control children were screened for the presence of enterovirus RNA using RT-PCR...
January 9, 2017: Diabetologia
https://www.readbyqxmd.com/read/28070056/a-case-of-idiopathic-type-1-diabetes-with-subsequent-recovery-of-endogenous-insulin-secretion-despite-initial-diagnosis-of-fulminant-type-1-diabetes
#17
Keizo Kaneko, Chihiro Satake, Junpei Yamamoto, Hironori Takahashi, Shojiro Sawada, Junta Imai, Tetsuya Yamada, Hideki Katagiri
Fulminant type 1 diabetes is characterized by remarkably rapid and complete β-cell destruction. The established diagnostic criteria include the occurrence of diabetic ketosis soon after the onset of hyperglycemic symptoms, elevated plasma glucose with relatively low HbA1c at the first visit, and extremely low C-peptide. Serum C-peptide levels remain extremely low over a prolonged period. A 26-year-old-man with diabetic ketosis was admitted to our hospital. His relatively low HbA1c (7.6 %), despite marked hyperglycemia (593 mg/dL) with marked ketosis, indicated abrupt onset...
January 6, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28067631/schwann-cells-are-activated-by-atp-released-from-neurons-in-an-in-vitro-cellular-model-of-miller-fisher-syndrome
#18
Umberto Rodella, Samuele Negro, Michele Scorzeto, Elisanna Bergamin, Kees Jalink, Cesare Montecucco, Nobuhiro Yuki, Michela Rigoni
The neuromuscular junction is exposed to different types of insults including mechanical traumas, toxins or autoimmune antibodies and, accordingly, has retained through evolution a remarkable ability to regenerate. Regeneration is driven by multiple signals that are exchanged among the cellular components of the junction. These signals are largely unknown.Miller Fisher syndrome is a variant of Guillain-Barré syndrome caused by autoimmune antibodies specific for epitopes of peripheral axon terminals. Using an animal model of Miller Fisher syndrome, we recently reported that a monoclonal anti-polysialoganglioside GQ1b antibody plus complement damages nerve terminals with production of mitochondrial hydrogen peroxide, that activates Schwann cells...
January 6, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28066895/anti-hmgcr-necrotizing-myopathy-masquerading-as-a-muscular-dystrophy-in-a-child
#19
Payam Mohassel, A Reghan Foley, Sandra Donkervoort, Pierre R Fequiere, Katherine Pak, Carsten G Bönnemann, Andrew L Mammen
INTRODUCTION: Immune-mediated necrotizing myopathies (IMNM) are characterized by progressive weakness, elevated serum creatine kinase levels, and necrotizing myopathic features on muscle biopsy. Presence of highly specific autoantibodies against signal recognition particle (SRP) or 3-hydroxy-3-methylglutaryl- coenzyme A reductase (HMGCR) can aid in recognition and confirmation of IMNMs. METHODS: We describe a boy with HMGCR-positive necrotizing myopathy and highlight the clinical features in this patient...
January 9, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28065518/membranous-nephropathy-integrating-basic-science-into-improved-clinical-management
#20
REVIEW
Daniel C Cattran, Paul E Brenchley
Idiopathic membranous nephropathy (INM) remains a common cause of the nephrotic syndrome in adults. The autoimmune nature of IMN was clearly delineated in 2009 with the identification of the glomerular-deposited IgG to be a podocyte receptor, phospholipase A2 receptor (PLA2R) in 70% to 75% of cases. This anti-PLA2R autoantibody, predominantly the IgG4 subclass, has been quantitated in serum using an enzyme-linked immunosorbent assay and has been used to aid diagnosis and monitor response to immunosuppressive therapy...
January 5, 2017: Kidney International
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