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https://www.readbyqxmd.com/read/28445940/suppression-of-allograft-rejection-by-cd8-cd122-pd-1-tregs-is-dictated-by-their-fas-ligand-initiated-killing-of-effector-t-cells-versus-fas-mediated-own-apoptosis
#1
Huazhen Liu, Yeshu Wang, Qiaohuang Zeng, Yu-Qun Zeng, Chun-Ling Liang, Feifei Qiu, Hong Nie, Zhenhua Dai
Mounting evidence has shown that naturally occurring CD8+CD122+ T cells are regulatory T cells (Tregs) that suppress both autoimmunity and alloimmunity. We have previously shown that CD8+CD122+PD-1+ Tregs not only suppress allograft rejection, but also are more potent in suppression than conventional CD4+CD25+ Tregs. However, the mechanisms underlying their suppression of alloimmunity are not well understood. In an adoptive T-cell transfer model of mice lacking lymphocytes, we found that suppression of skin allograft rejection by CD8+CD122+PD-1+ Tregs was mostly dependent on their expression of Fas ligand as either lacking Fas ligand or blocking it with antibodies largely abolished their suppression of allograft rejection mediated by transferred T cells...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28445877/benign-exocrine-pancreatic-diseases-in-inflammatory-bowel-diseases
#2
Raffaele Pezzilli, Nico Pagano
BACKGROUND: Data regarding the involvement of the pancreas during the course of inflammatory bowel disease (IBD) are scarce and conflicting. AIM: To assess the frequency of benign pancreatic diseases, that is, acute pancreatitis, chronic pancreatitis (CP), and autoimmune pancreatitis (AIP), in a population with IBD. METHODS: A search for patients with IBD who presented at our hospital between January 2006 and January 2015 with a diagnosis of IBD was carried out...
April 27, 2017: Digestive Diseases
https://www.readbyqxmd.com/read/28445677/overexpression-of-the-cytokine-baff-and-autoimmunity-risk
#3
Maristella Steri, Valeria Orrù, M Laura Idda, Maristella Pitzalis, Mauro Pala, Ilenia Zara, Carlo Sidore, Valeria Faà, Matteo Floris, Manila Deiana, Isadora Asunis, Eleonora Porcu, Antonella Mulas, Maria G Piras, Monia Lobina, Sandra Lai, Mara Marongiu, Valentina Serra, Michele Marongiu, Gabriella Sole, Fabio Busonero, Andrea Maschio, Roberto Cusano, Gianmauro Cuccuru, Francesca Deidda, Fausto Poddie, Gabriele Farina, Mariano Dei, Francesca Virdis, Stefania Olla, Maria A Satta, Mario Pani, Alessandro Delitala, Eleonora Cocco, Jessica Frau, Giancarlo Coghe, Lorena Lorefice, Giuseppe Fenu, Paola Ferrigno, Maria Ban, Nadia Barizzone, Maurizio Leone, Franca R Guerini, Matteo Piga, Davide Firinu, Ingrid Kockum, Izaura Lima Bomfim, Tomas Olsson, Lars Alfredsson, Ana Suarez, Patricia E Carreira, Maria J Castillo-Palma, Joseph H Marcus, Mauro Congia, Andrea Angius, Maurizio Melis, Antonio Gonzalez, Marta E Alarcón Riquelme, Berta M da Silva, Maurizio Marchini, Maria G Danieli, Stefano Del Giacco, Alessandro Mathieu, Antonello Pani, Stephen B Montgomery, Giulio Rosati, Jan Hillert, Stephen Sawcer, Sandra D'Alfonso, John A Todd, John Novembre, Gonçalo R Abecasis, Michael B Whalen, Maria G Marrosu, Alessandra Meloni, Serena Sanna, Myriam Gorospe, David Schlessinger, Edoardo Fiorillo, Magdalena Zoledziewska, Francesco Cucca
Background Genomewide association studies of autoimmune diseases have mapped hundreds of susceptibility regions in the genome. However, only for a few association signals has the causal gene been identified, and for even fewer have the causal variant and underlying mechanism been defined. Coincident associations of DNA variants affecting both the risk of autoimmune disease and quantitative immune variables provide an informative route to explore disease mechanisms and drug-targetable pathways. Methods Using case-control samples from Sardinia, Italy, we performed a genomewide association study in multiple sclerosis followed by TNFSF13B locus-specific association testing in systemic lupus erythematosus (SLE)...
April 27, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28445600/caplacizumab-reduces-the-frequency-of-major-thromboembolic-events-exacerbations-and-death-in-patients-with-acquired-thrombotic-thrombocytopenic-purpura
#4
F Peyvandi, M Scully, J A Kremer Hovinga, P Knöbl, S Cataland, K De Beuf, F Callewaert, H De Winter, R K Zeldin
BACKGROUND: Acquired thrombotic thrombocytopenic purpura (aTTP) is a life-threatening autoimmune thrombotic microangiopathy. In spite of treatment with plasma exchange and immunosuppression, patients remain at risk for thrombotic complications, exacerbations and death. In the Phase II TITAN study, treatment with caplacizumab, an anti-vWF Nanobody(®) , was shown to reduce the time to confirmed platelet count normalization and exacerbations during treatment. OBJECTIVE: The clinical benefit of caplacizumab was further investigated in a post-hoc analysis of the incidence of major thromboembolic events and exacerbations during the study drug treatment period and TTP-related death during the study...
April 26, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28445282/a-case-report-of-sj%C3%A3-gren-syndrome-manifesting-bilateral-basal-ganglia-lesions
#5
Bing Niu, Zhenzhen Zou, Yuqin Shen, Bingzhen Cao
RATIONALE: Peripheral neurological complications in primary Sjögren's syndrome (pSS) seem the most common, however the involvement of central nervous system (CNS) remains unclear. While abnormalities in pSS revealed by brain magnetic resonance imaging (MRI) are usually small discrete hyperintense areas in the white matter on T2-FLAIR weighted MRI, massive brain lesions have been rarely reported, particularly in bilateral basal ganglia. PATIENT CONCERNS: A 51-year-old woman exhibited dizziness, slurred speech and hemiplegia as a manifestation of pSS...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28445182/electroconvulsive-therapy-in-autoimmune-and-vascular-pathology
#6
Sergio González Garrido, Miguel Zacarías Pérez Sosa
No abstract text is available yet for this article.
April 25, 2017: Journal of ECT
https://www.readbyqxmd.com/read/28444954/clinical-presentation-and-outcome-of-children-with-central-diabetes-insipidus-associated-with-a-self-limited-or-transient-pituitary-stalk-thickening-diagnosed-as-infundibuloneurohypophysitis
#7
J Schaefers, M Cools, K De Waele, I Gies, V Beauloye, P Lysy, I Francois, D Beckers, J De Schepper
OBJECTIVE: Despite lymphocytic or autoimmune infundibuloneurohypophysitis (INH) is an increasingly recognized etiology in children with central diabetes insipidus, clinical data on epidemiology (clinical evolution, predisposing factors, complications), diagnosis and management of this entity are limited and mostly based on published case reports. The aim of this study was to gain a broader insight in the natural history of this disease by analyzing the clinical presentation, radiological pituitary stalk changes, associated autoimmunity and hormonal deficiencies in children with CDI and a self-limiting or transient stalk thickening (ST), diagnosed as autoimmune INH, during the last 15 years in four Belgian university hospitals...
April 26, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28444929/antiretinal-antibodies-in-central-serous-chorioretinopathy-prevalence-and-clinical-implications
#8
Josianne C E M Ten Berge, Elon H C van Dijk, Marco W J Schreurs, Jacolien Vermeer, Camiel J F Boon, Aniki Rothova
PURPOSE: To investigate the possible role of autoimmune reactions directed against retinal tissue in central serous chorioretinopathy (CSC), by analysing the presence of serum antiretinal antibodies (ARAs) and establishing their clinical relevance. METHODS: Sixty-three patients with CSC were included, and clinical characteristics were collected. Serum samples of all patients with CSC, 101 uveitis patients and 60 healthy donors were analysed for the presence of ARAs by indirect immunofluorescence...
April 26, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28444889/invasive-fungal-infections-in-paediatric-patients-treated-with-macromolecular-immunomodulators-other-than-tumour-necrosis-alpha-inhibitors
#9
REVIEW
Ioannis Kyriakidis, Athanasios Tragiannidis, Ilse Zündorf, Andreas H Groll
An expanding list of immunomodulatory or immunosuppressive monoclonal antibodies (mAbs) and biologic therapeutics is currently entering clinical practice, particularly in the areas of oncology, transplantation and autoimmune disorders. These agents are directed against molecules or cells involved in inflammation and immunity and may therefore be associated with serious and opportunistic infections. The purpose of this review was to critically analyse the literature on invasive fungal infections (IFIs) occurring in association with mAbs and fusion proteins other than tumour necrosis alpha (TNF-α) inhibitors, including therapeutics modulating T-cell-mediated pathologies (muromonab, abatacept, belatacept, ipilimumab, basiliximab, daclizumab), inducing lymphopenia (alemtuzumab), depleting CD20+ B cells (rituximab) and interfering with various targets (anakinra, natalizumab, blodalumab, ixekizumab and others) with a focus on children, and to provide a framework of evaluating the risk for IFIs in this population...
April 26, 2017: Mycoses
https://www.readbyqxmd.com/read/28444859/roles-of-samhd1-in-antiviral-defense-autoimmunity-and-cancer
#10
REVIEW
Miaomiao Li, Dong Zhang, Mengying Zhu, Yuxian Shen, Wei Wei, Songcheng Ying, Heinrich Korner, Jun Li
The enzyme, sterile α motif and histidine-aspartic acid domain-containing protein 1 (SAMHD1) diminishes infection of human immunodeficiency virus type 1 (HIV-1) by hydrolyzing intracellular deoxynucleotide triphosphates (dNTPs) in myeloid cells and resting CD4+ T cells. This dNTP degradation reduces the dNTP concentration to a level insufficient for viral cDNA synthesis, thereby inhibiting retroviral replication. This antiviral enzymatic activity can be inhibited by viral protein X (Vpx). The HIV-2/SIV Vpx causes degradation of SAMHD1, thus interfering with the SAMHD1-mediated restriction of retroviral replication...
April 25, 2017: Reviews in Medical Virology
https://www.readbyqxmd.com/read/28444759/dysregulated-cd46-shedding-interferes-with-th1-contraction-in-systemic-lupus-erythematosus
#11
Ursula Ellinghaus, Andrea Cortini, Christopher L Pinder, Gaelle Le Friec, Claudia Kemper, Timothy J Vyse
IFN-γ-producing T helper 1 (Th1) cell responses mediate protection against infections but uncontrolled Th1 activity also contributes to a broad range of autoimmune diseases. Autocrine complement activation has recently emerged as key in the induction and contraction of human Th1 immunity: Activation of the complement regulator CD46 and the C3aR expressed by CD4(+) T cells via autocrine generated ligands C3b and C3a, respectively, are critical to IFN-γ production. Further, CD46-mediated signals also induce co-expression of immunosuppressive IL-10 in Th1 cells and transition into a (self)-regulating and contracting phase...
April 26, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28444729/benefits-of-rituximab-as-a-second-line-treatment-for-autoimmune-haemolytic-anaemia-in-children-a-prospective-french-cohort-study
#12
Stéphane Ducassou, Guy Leverger, Helder Fernandes, Hervé Chambost, Yves Bertrand, Corinne Armari-Alla, Brigitte Nelken, Fabrice Monpoux, Corinne Guitton, Thierry Leblanc, Alain Fisher, Odile Lejars, Eric Jeziorski, Fanny Fouissac, Patrick Lutz, Marlène Pasquet, Isabelle Pellier, Christophe Piguet, Philippe Vic, Sophie Bayart, Aude Marie-Cardine, Marc Michel, Yves Perel, Nathalie Aladjidi
Childhood autoimmune haemolytic anaemia (AIHA) requires second-line immunosuppressive therapy in 30-50% of cases. It appears that rituximab is indicated in such circumstances. This prospective national study reports the practice, efficacy and tolerance of rituximab in children with isolated AIHA and AIHA in the setting of Evans syndrome (ES). Sixty-one children were given rituximab between 2000 and 2014. The median interval from diagnosis to rituximab was 9·9 [interquartile range (IQR) 1·6-28·5] months. Forty-six patients responded (75%) and the 6-year relapse-free survival (RFS) was 48%...
April 26, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28444576/expression-of-ccr6-on-b-cells-in-systemic-lupus-erythematosus-patients
#13
Adrian Y S Lee, Jennifer L Bannan, Heinrich Körner
B cells are known to play a dominant pathogenic role in autoimmune conditions such as systemic lupus erythematosus (SLE) and rheumatoid arthritis. In recent times, the chemokine receptor CCR6 and its cognate ligand CCL20 have been shown to play a role in the fundamental kinetics of germinal centres and B cell responses. As CCR6 is found on B cells and is upregulated after activation, we investigated the expression of CCR6 on naive, pre-germinal centre (GC), GC/plasma cell and memory B cells in peripheral B cells of SLE patients and healthy controls using flow cytometry...
April 25, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28444216/dietary-metabolites-derived-from-gut-microbiota-critical-modulators-of-epigenetic-changes-in-mammals
#14
Mohd Iqbal Bhat, Rajeev Kapila
The mammalian gastrointestinal tract harbors trillions of commensal microorganisms, collectively known as the microbiota. The microbiota is a critical source of environmental stimuli and, thus, has a tremendous impact on the health of the host. The microbes within the microbiota regulate homeostasis within the gut, and any alteration in their composition can lead to disorders that include inflammatory bowel disease, allergy, autoimmune disease, diabetes, mental disorders, and cancer. Hence, restoration of the gut flora following changes or imbalance is imperative for the host...
April 22, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28444127/hla-class-i-binding-prediction-via-convolutional-neural-networks
#15
Yeeleng S Vang, Xiaohui Xie
Motivation: Many biological processes are governed by protein-ligand interactions. One such example is the recognition of self and nonself cells by the immune system. This immune response process is regulated by the major histocompatibility complex (MHC) protein which is encoded by the human leukocyte antigen (HLA) complex. Understanding the binding potential between MHC and peptides can lead to the design of more potent, peptide-based vaccines and immunotherapies for infectious autoimmune diseases...
April 21, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28443628/intestinal-microbiota-link-lymphopenia-to-murine-autoimmunity-via-pd-1-cxcr5-dim-b-helper-t-cell-induction
#16
Toshiki Eri, Kimito Kawahata, Takeyuki Kanzaki, Mitsuru Imamura, Kazuya Michishita, Lisa Akahira, Ei Bannai, Noritada Yoshikawa, Yasumasa Kimura, Takeshi Satoh, Satoshi Uematsu, Hirotoshi Tanaka, Kazuhiko Yamamoto
T cell lymphopenia results in peripheral homeostatic expansion to maintain the T cell immune system, which is termed lymphopenia-induced proliferation (LIP). LIP is a potential risk for expanding autoreactive clones to become pathogenic in human and murine autoimmune diseases. However, the ontogeny of T cells that induce autoantibody production by autoreactive B cells in LIP remains unclear. Transfer of CD4(+)CD25(-) conventional T (Tc) cells into T-cell-deficient athymic nude mice has been previously reported as a LIP-induced autoimmune model which develops organ-specific autoimmune diseases and systemic antinuclear antibodies (ANAs)...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28443243/association-between-hashimoto-s-thyroiditis-and-thyroid-cancer-in-64-628-patients
#17
Christina Resende de Paiva, Christian Grønhøj, Ulla Feldt-Rasmussen, Christian von Buchwald
BACKGROUND: The incidence of thyroid cancer (TC) is increasing although explanatory causes are lacking. A link between cancer and inflammation is well documented but unclear for autoimmune thyroid diseases and TC. We aimed to systematically review the association between Hashimoto's thyroiditis (HT) and papillary, follicular, medullary, anaplastic thyroid carcinoma, and thyroid lymphoma (TL). METHODS: PubMed, OVID Medline, Google Scholar, and the Cochrane Library were searched from 1955 to 2016...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28443093/a-novel-cervical-spinal-cord-window-preparation-allows-for-two-photon-imaging-of-t-cell-interactions-with-the-cervical-spinal-cord-microvasculature-during-experimental-autoimmune-encephalomyelitis
#18
Neda Haghayegh Jahromi, Heidi Tardent, Gaby Enzmann, Urban Deutsch, Naoto Kawakami, Stefan Bittner, Dietmar Vestweber, Frauke Zipp, Jens V Stein, Britta Engelhardt
T-cell migration across the blood-brain barrier (BBB) is a crucial step in the pathogenesis of experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS). Two-photon intravital microscopy (2P-IVM) has been established as a powerful tool to study cell-cell interactions in inflammatory EAE lesions in living animals. In EAE, central nervous system inflammation is strongly pronounced in the spinal cord, an organ in which 2P-IVM imaging is technically very challenging and has been limited to the lumbar spinal cord...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28443090/immunometabolic-regulations-mediated-by-coinhibitory-receptors-and-their-impact-on-t-cell-immune-responses
#19
REVIEW
Nikolaos Patsoukis, Jessica D Weaver, Laura Strauss, Christoph Herbel, Pankaj Seth, Vassiliki A Boussiotis
Host immunity provides wide spectrum protection that serves to eradicate pathogens and cancer cells, while maintaining self-tolerance and immunological homeostasis. Ligation of the T cell receptor (TCR) by antigen activates signaling pathways that coordinately induce aerobic glycolysis, mitochondrial activity, anabolic metabolism, and T effector cell differentiation. Activation of PI3K, Akt, and mTOR triggers the switch to anabolic metabolism by inducing transcription factors such as Myc and HIF1, and the glucose transporter Glut1, which is pivotal for the increase of glucose uptake after T cell activation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28442926/hypothermia-due-to-limbic-system-involvement-and-longitudinal-myelitis-in-a-case-of-japanese-encephalitis-a-case-report-from-india
#20
Santhosh Narayanan, N K Thulaseedharan, Gomathy Subramaniam, Geetha Panarkandy, V K Shameer, Arathi Narayanan
Japanese encephalitis (JE) is an infectious encephalitis prevalent in Asia. It usually presents with fever, headache, convulsions and extrapyramidal symptoms. Limbic system involvement and hypothermia though common in autoimmune encephalitis have never been reported in JE. We report a case of an 18-year-old girl with no previous comorbidities who presented to us with a history of fever and headache for 1 week duration. She developed bilateral lateral rectus palsy and asymmetric flaccid weakness of all four limbs, after 2 days of admission, which was followed by altered sensorium and intermittent hypothermia...
2017: International Journal of General Medicine
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