keyword
MENU ▼
Read by QxMD icon Read
search

autoantigen

keyword
https://www.readbyqxmd.com/read/29331322/expression-level-of-risk-genes-of-mhc-class-ii-is-a-susceptibility-factor-for-autoimmunity-new-insights
#1
REVIEW
Carmen Gianfran, Laura Pisapia, Stefania Picascia, Maria Strazzullo, Giovanna Del Pozzo
To date, the study of the impact of major hystocompatibility complex on autoimmunity has been prevalently focused on structural diversity of MHC molecules in binding and presentation of (auto)antigens to cognate T cells. Recently, a number of experimental evidences suggested new points of view to investigate the complex relationships between MHC gene expression and the individual predisposition to autoimmune diseases. Irrespective of the nature of the antigen, a threshold of MHC-peptide complexes needs to be reached, as well as a threshold of T cell receptors engaged is required, for the activation and proliferation of autoantigen-reactive T cells...
January 10, 2018: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29324897/serum-galactose-deficient-iga1-and-igg-autoantibodies-correlate-in-patients-with-iga-nephropathy
#2
William J Placzek, Hiroyuki Yanagawa, Yuko Makita, Matthew B Renfrow, Bruce A Julian, Dana V Rizk, Yusuke Suzuki, Jan Novak, Hitoshi Suzuki
IgA nephropathy is an autoimmune disease characterized by IgA1-containing glomerular immune deposits. We previously proposed a multi-hit pathogenesis model in which patients with IgA nephropathy have elevated levels of circulatory IgA1 with some O-glycans deficient in galactose (Gd-IgA1, autoantigen). Gd-IgA1 is recognized by anti-glycan IgG and/or IgA autoantibodies, resulting in formation of pathogenic immune complexes. Some of these immune complexes deposit in the kidney, activate mesangial cells, and incite glomerular injury leading to clinical presentation of IgA nephropathy...
2018: PloS One
https://www.readbyqxmd.com/read/29317049/autoimmunity-against-a-glycolytic-enzyme-as-a-possible-cause-for-persistent-symptoms-in-lyme-disease
#3
Paolo Maccallini, Serena Bonin, Giusto Trevisan
Some patients with a history of Borrelia burgdorferi infection develop a chronic symptomatology characterized by cognitive deficits, fatigue, and pain, despite antibiotic treatment. The pathogenic mechanism that underlines this condition, referred to as post-treatment Lyme disease syndrome (PTLDS), is currently unknown. A debate exists about whether PTLDS is due to persistent infection or to post-infectious damages in the immune system and the nervous system. We present the case of a patient with evidence of exposure to Borrelia burgdorferi sl and a long history of debilitating fatigue, cognitive abnormalities and autonomic nervous system issues...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29316717/scanning-the-immunopathogenesis-of-psoriasis
#4
REVIEW
Andrea Chiricozzi, Paolo Romanelli, Elisabetta Volpe, Giovanna Borsellino, Marco Romanelli
Psoriasis is a chronic inflammatory skin disease, the immunologic model of which has been profoundly revised following recent advances in the understanding of its pathophysiology. In the current model, a crosstalk between keratinocytes, neutrophils, mast cells, T cells, and dendritic cells is thought to create inflammatory and pro-proliferative circuits mediated by chemokines and cytokines. Various triggers, including recently identified autoantigens, Toll-like receptor agonists, chemerin, and thymic stromal lymphopoietin may activate the pathogenic cascade resulting in enhanced production of pro-inflammatory and proliferation-inducing mediators such as interleukin (IL)-17, tumor necrosis factor (TNF)-α, IL-23, IL-22, interferon (IFN)-α, and IFN-γ by immune cells...
January 8, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29311365/simultaneous-recognition-of-allogeneic-mhc-and-cognate-autoantigen-by-autoreactive-t-cells-in-transplant-rejection
#5
Adam L Burrack, Laurie G Landry, Janet Siebert, Marilyne Coulombe, Ronald G Gill, Maki Nakayama
The autoimmune condition is a primary obstacle to inducing tolerance in type 1 diabetes patients receiving allogeneic pancreas transplants. It is unknown how autoreactive T cells that recognize self-MHC molecules contribute to MHC-disparate allograft rejection. In this report, we show the presence and accumulation of dual-reactive, that is autoreactive and alloreactive, T cells in C3H islet allografts that were transplanted into autoimmune diabetic NOD mice. Using high-throughput sequencing, we discovered that T cells prevalent in allografts share identical TCRs with autoreactive T cells present in pancreatic islets...
January 8, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29311219/diabetes-reduces-severity-of-aortic-aneurysms-depending-on-the-presence-of-cell-division-autoantigen-1-cda1
#6
Jiaze Li, Pacific Huynh, Aozhi Dai, Tieqiao Wu, Yugang Tu, Bryna Chow, Helen Kiriazis, Xiao-Jun Du, Leon A Bach, Jennifer L Wilkinson-Berka, Erik Biros, Philip Walker, Maria Nataatmadja, Malcolm West, Jonathan Golledge, Terri J Allen, Mark E Cooper, Zhonglin Chai
Diabetes is a negative risk factor for aortic aneurysm, but the underlying explanation for this phenomenon is unknown. We have previously demonstrated that Cell Division Autoantigen 1 (CDA1), which enhances TGF-β signaling, is upregulated in diabetes. We hypothesized that CDA1 plays a key role in conferring the protective effect of diabetes against aortic aneurysms. Male wildtype, CDA1 knockout, Apolipoprotein E (ApoE) knockout and CDA1/ApoE double knockout (dKO) mice were rendered diabetic. Whereas aneurysms were not observed in diabetic ApoE knockout and wildtype mice, 40% of diabetic dKO mice developed aortic aneurysms...
January 8, 2018: Diabetes
https://www.readbyqxmd.com/read/29304522/the-pathophysiological-role-of-neutrophil-extracellular-traps-in-inflammatory-diseases
#7
Aldo Bonaventura, Luca Liberale, Federico Carbone, Alessandra Vecchié, Candela Diaz-Cañestro, Giovanni G Camici, Fabrizio Montecucco, Franco Dallegri
Neutrophil pathogen-killing mechanism termed neutrophil extracellular traps (NETs) has been recently identified. NETs consist of chromatin and histones along with serine proteases and myeloperoxidase and are induced by a great variety of infectious and non-infectious stimuli. NETosis is a kind of programmed neutrophil death characterized by chromatin decondensation and release of nuclear granular contents, mainly driven by peptidylarginine deiminase 4 citrullination of histones. Although classically related to the protection against infectious pathogens, nowadays NETs have been described as a player of several pathophysiological processes...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29299667/genetic-alterations-and-tumor-immune-attack-in-yo-paraneoplastic-cerebellar-degeneration
#8
Mathilde Small, Isabelle Treilleux, Coline Couillault, Daniel Pissaloux, Géraldine Picard, Sandrine Paindavoine, Valery Attignon, Qing Wang, Véronique Rogemond, Stéphanie Lay, Isabelle Ray-Coquard, Jacobus Pfisterer, Florence Joly, Andreas Du Bois, Dimitri Psimaras, Nathalie Bendriss-Vermare, Christophe Caux, Bertrand Dubois, Jérôme Honnorat, Virginie Desestret
Paraneoplastic cerebellar degenerations with anti-Yo antibodies (Yo-PCD) are rare syndromes caused by an auto-immune response against neuronal antigens (Ags) expressed by tumor cells. However, the mechanisms responsible for such immune tolerance breakdown are unknown. We characterized 26 ovarian carcinomas associated with Yo-PCD for their tumor immune contexture and genetic status of the 2 onconeural Yo-Ags, CDR2 and CDR2L. Yo-PCD tumors differed from the 116 control tumors by more abundant T and B cells infiltration occasionally organized in tertiary lymphoid structures harboring CDR2L protein deposits...
January 3, 2018: Acta Neuropathologica
https://www.readbyqxmd.com/read/29289663/identification-of-the-antigenic-epitopes-of-maternal-autoantibodies-in-autism-spectrum-disorders
#9
Elizabeth Edmiston, Karen L Jones, Tam Vu, Paul Ashwood, Judy Van de Water
Several groups have described the presence of fetal brain-reactive maternal autoantibodies in the plasma of some mothers whose children have autism spectrum disorder (ASD). We previously identified seven autoantigens targeted by these maternal autoantibodies, each of which is expressed at significant levels in the developing brain and has demonstrated roles in typical neurodevelopment. To further understand the binding repertoire of the maternal autoantibodies, as well as the presence of any meaningful differences with respect to the recognition and binding of these ASD- specific autoantibodies to each of these neuronal autoantigens, we utilized overlapping peptide microarrays incubated with maternal plasma samples obtained from the Childhood Autism Risk from Genetics and Environment (CHARGE) Study...
December 28, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29287303/high-levels-of-dek-autoantibodies-in-sera-of-polyarticular-jia-patients-and-in-early-flare-following-cessation-of-anti-tnf-therapy
#10
Nirit Mor-Vaknin, Miguel Rivas, Maureen Legendre, Smriti Mohan, Ye Yuanfan, Theresa Mau, Anne Johnson, Bin Huang, Lili Zhao, Yukiko Kimura, Steven J Spalding, Paula W Morris, Beth S Gottlieb, Karen Onel, Judyann C Olson, Barbara S Edelheit, Michael Shishov, Lawrence K Jung, Elaine A Cassidy, Sampath Prahalad, Murray H Passo, Timothy Beukelman, Jay Mehta, Edward H Giannini, Barbara S Adams, Daniel J Lovell, David M Markovitz
OBJECTIVE: The nuclear oncoprotein DEK is an autoantigen associated with juvenile idiopathic arthritis (JIA), especially the oligoarticular subtype. DEK is a secreted chemoatactic factor. Abundant DEK and DEK autoantibodies are found in the inflamed JIA synovium. In screening sera samples from two different JIA patient cohorts for DEK autoantibodies, we now further characterize the nature of DEK autoantibodies. METHODS: DEK autoantibody levels were analyzed in sera from 33 JIA patients, 13 patients with other inflammatory conditions, and 11 healthy controls and 89 sera samples from JIA patients undergoing anti-TNF therapy...
December 29, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29283462/role-of-t-helper-17-cells-and-t-regulatory-cells-in-alopecia-areata-comparison-of-lesion-and-serum-cytokine-between-controls-and-patients
#11
Seung-Hee Loh, Hae-Na Moon, Bark-Lynn Lew, Woo-Young Sim
BACKGROUND: Alopecia areata (AA) is an organ-specific autoimmune disease with T-cell-mediated attack of hair follicle autoantigens. As T-helper 17 (Th17) cells and T regulatory (Treg) cells are crucially involved in the pathogenesis, the role of Th17 and Treg cytokines has not been studied yet. OBJECTIVE: To determine whether AA is associated with alterations in lesional and serum Th17 and Treg cytokines, and studied whether they were associated with clinical type...
December 28, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29278672/the-initiation-of-autoimmunity-at-epithelial-surfaces-a-focus-on-rheumatoid-arthritis-and-systemic-lupus-erythematosus
#12
Peta Pentony, Laurence Duquenne, Katherine Dutton, Kulveer Mankia, Hanna Gul, Edward Vital, Paul Emery
It is well established that the autoantibodies that characterize both rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) are present systemically years before patients develop disease. In both these autoimmune rheumatic diseases, evidence is growing that local autoimmune processes occur at epithelial surfaces potentially initiating localized autoimmunity. For RA, these are mucosal surfaces including the oral mucosa, lung, and gut. At the oral mucosa and lung, risk factors such as periodontal disease and smoking may contribute to autoimmunity by driving the local generation of citrullinated autoantigens...
November 2017: Discovery Medicine
https://www.readbyqxmd.com/read/29276517/bp180-is-critical-in-the-autoimmunity-of-bullous-pemphigoid
#13
REVIEW
Yale Liu, Liang Li, Yumin Xia
Bullous pemphigoid (BP) is by far the most common autoimmune blistering dermatosis that mainly occurs in the elderly. The BP180 is a transmembrane glycoprotein, which is highly immunodominant in BP. The structure and location of BP180 indicate that it is a significant autoantigen and plays a key role in blister formation. Autoantibodies from BP patients react with BP180, which leads to its degradation and this has been regarded as the central event in BP pathogenesis. The consequent blister formation involves the activation of complement-dependent or -independent signals, as well as inflammatory pathways induced by BP180/anti-BP180 autoantibody interaction...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29276183/the-reaction-of-placental-grp78-protein-with-sera-from-women-with-multiple-sclerosis
#14
Behrouz Gharesi-Fard, Maryam Zare, Eskandar Kamali-Sarvestani
BACKGROUND: Multiple Sclerosis (MS) with four different types is one of the well studied autoimmune diseases of the central nervous system. Generally, two-thirds of MS patients are females who are at risk of pregnancy-related complications. Inappropriate responses of mother's immune system, such as antibody production against placental proteins, may lead to pregnancy-related disorders. The association between pregnancy complications and some autoantibodies including anti-phospholipid and anti-angiotensin II type-1 receptor antibodies are clear examples in this regard...
December 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/29259102/altered-homeostasis-and-development-of-regulatory-t-cell-subsets-represent-an-il-2r-dependent-risk-for-diabetes-in-nod-mice
#15
Connor J Dwyer, Allison L Bayer, Carmen Fotino, Liping Yu, Cecilia Cabello-Kindelan, Natasha C Ward, Kevin H Toomer, Zhibin Chen, Thomas R Malek
The cytokine interleukin-2 (IL-2) is critical for the functions of regulatory T cells (Tregs). The contribution of polymorphisms in the gene encoding the IL-2 receptor α subunit (IL2RA), which are associated with type 1 diabetes, is difficult to determine because autoimmunity depends on variations in multiple genes, where the contribution of any one gene product is small. We investigated the mechanisms whereby a modest reduction in IL-2R signaling selectively in T lymphocytes influenced the development of diabetes in the NOD mouse model...
December 19, 2017: Science Signaling
https://www.readbyqxmd.com/read/29258717/tolerogenic-ag-plg-nanoparticles-induce-tregs-to-suppress-activated-diabetogenic-cd4-and-cd8-t-cells
#16
Suchitra Prasad, Tobias Neef, Dan Xu, Joseph R Podojil, Daniel R Getts, Lonnie D Shea, Stephen D Miller
Type 1 diabetes (T1D) is mediated by destruction of pancreatic β cells by autoantigen-specific CD4+ and CD8+ T cells, thus the ideal solution for T1D is the restoration of immune tolerance to β cell antigens. We demonstrate the ability of carboxylated 500 nm biodegradable poly(lactide-co-glycolide) (PLG) nanoparticles PLG nanoparticles (either surface coupled with or encapsulating the cognate diabetogenic peptides) to rapidly and efficiently restore tolerance in NOD.SCID recipients of both activated diabetogenic CD4+ BDC2...
December 16, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29250062/translating-mechanism-of-regulatory-action-of-tolerogenic-dendritic-cells-to-monitoring-endpoints-in-clinical-trials
#17
REVIEW
Jessica S Suwandi, Tatjana Nikolic, Bart O Roep
Tolerogenic dendritic cells (tolDCs) have reached patients with autoimmune and inflammatory disease, at least in clinical trials. The safety of tolDCs as intervention therapy has been established, but the capacity to modulate autoimmune response in vivo remains to be demonstrated. Studies have revealed a diversity of regulatory mechanisms that tolDCs may employ in vivo. These mechanisms differ between various types of modulated tolDC. The most often foreseen action of tolDCs is through regulatory polarization of naïve T cells or activation of existing regulatory T cells, which should ultimately diminish autoimmune inflammation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29247692/granzyme-b-in-skin-inflammation-and-disease
#18
REVIEW
Christopher T Turner, Darielle Lim, David J Granville
Granzyme B (GzmB) is a serine protease emerging as an important mediator of skin injury, inflammation and repair. Found at low levels in healthy skin, GzmB is dramatically elevated in chronic disease and inflammatory skin disorders, including diabetic ulcers, hypertrophic scarring, autoimmune skin disorders, cutaneous leishmaniasis and aging skin. Traditionally known for its pro-apoptotic function, the role of GzmB in disease has been redefined due to the discovery of additional activities involving the cleavage of extracellular matrix proteins, epithelial barrier disruption, fibrosis, vascular permeability, anoikis, inflammation and autoimmunity...
December 13, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29234321/viral-impact-in-autoimmune-diseases-expanding-the-x-chromosome-nucleolus-nexus-hypothesis
#19
Wesley H Brooks
Viruses are suspected of significant roles in autoimmune diseases but the mechanisms are unclear. We get some insight by considering demands a virus places on host cells. Viruses not only require production of their own proteins, RNA and/or DNA, but also production of additional cellular machinery, such as ribosomes, to handle the increased demands. Since the nucleolus is a major site of RNA processing and ribonucleoprotein assembly, nucleoli are targeted by viruses, directly when viral RNA and proteins enter the nucleolus and indirectly when viruses induce increased expression of cellular polyamine genes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29229678/epitope-mapping-of-serca2a-identifies-an-antigenic-determinant-that-induces-mainly-atrial-myocarditis-in-a-j-mice
#20
Bharathi Krishnan, Chandirasegaran Massilamany, Rakesh H Basavalingappa, Arunakumar Gangaplara, Rajkumar A Rajasekaran, Muhammad Z Afzal, Vahid Khalilzad-Sharghi, You Zhou, Jean-Jack Riethoven, Shyam S Nandi, Paras K Mishra, Raymond A Sobel, Jennifer L Strande, David Steffen, Jay Reddy
Sarcoplasmic/endoplasmic reticulum Ca2+ adenosine triphosphatase (SERCA)2a, a critical regulator of calcium homeostasis, is known to be decreased in heart failure. Patients with myocarditis or dilated cardiomyopathy develop autoantibodies to SERCA2a suggesting that they may have pathogenetic significance. In this report, we describe epitope mapping analysis of SERCA2a in A/J mice that leads us to make five observations: 1) SERCA2a contains multiple T cell epitopes that induce varying degrees of myocarditis...
December 11, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
keyword
keyword
105347
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"