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vaccines and autoimmunity

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https://www.readbyqxmd.com/read/28332072/are-the-autoimmune-inflammatory-syndrome-induced-by-adjuvants-asia-and-the-undifferentiated-connective-tissue-disease-uctd-related-to-each-other-a-case-control-study-of-environmental-exposures
#1
F Scanzi, L Andreoli, M Martinelli, M Taraborelli, I Cavazzana, N Carabellese, R Ottaviani, F Allegri, F Franceschini, N Agmon-Levin, Y Shoenfeld, Angela Tincani
The autoimmune/inflammatory syndrome induced by adjuvants (ASIA) is an entity that includes different autoimmune conditions observed after exposure to an adjuvant. Patients with undifferentiated connective tissue disease (UCTD) present many signs and symptoms of ASIA, alluding to the idea that an exposure to adjuvants can be a trigger also for UCTD. The aim of this case-control study was to investigate exposure to adjuvants prior to disease onset in patients affected by UCTD. Ninety-two UCTD patients and 92 age- and sex-matched controls with no malignancy, chronic infections, autoimmune disease nor family history of autoimmune diseases were investigated for exposure to adjuvants...
March 22, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28326845/the-use-of-biologics-in-pregnant-patients-with-rheumatic-disease
#2
Monika Østensen
An increasing number of female patients with autoimmune diseases are treated with biologic drugs. Concerns in regard to safety of biologics during pregnancy arise in patients who have not completed their families. Areas covered: A review of the literature dealing with child outcomes of pregnancies exposed to biologics shows that TNF inhibitors (TNFi) are the best studied in regard to human pregnancy. In studies comparing exposed pregnancies to disease-matched controls no increased risk of spontaneous abortion, low birth weight, prematurity or congenital malformations has been observed...
March 22, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28321419/pvaxhsp65-vaccination-primes-for-high-il-10-production-and-decreases-experimental-encephalomyelitis-severity
#3
Sofia Fernanda Gonçalves Zorzella-Pezavento, Fernanda Chiuso-Minicucci, Thais Graziela Donegá França, Larissa Lumi Watanabe Ishikawa, Larissa Camargo da Rosa, Priscila Maria Colavite, Bianca Balbino, Camila Marques, Maura Rosane Valerio Ikoma, Ana Paula Masson, Célio Lopes Silva, Alexandrina Sartori
Experimental autoimmune encephalomyelitis (EAE) is a demyelinating pathology of the central nervous system (CNS) used as a model to study multiple sclerosis immunopathology. EAE has also been extensively employed to evaluate potentially therapeutic schemes. Considering the presence of an immune response directed to heat shock proteins (hsps) in autoimmune diseases and the immunoregulatory potential of these molecules, we evaluated the effect of a previous immunization with a genetic vaccine containing the mycobacterial hsp65 gene on EAE development...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28321216/facilitated-peptide-transport-via-the-mucosal-epithelium-impact-on-tolerance-induction
#4
Elisabeth E Kenngott, Jennifer Pfeil, Ute Hoffmann, Uta Lauer, Anja A Kühl, Anne Rigby, Anton Pernthaner, Alf Hamann
A hallmark of autoimmunity is the breakdown of tolerance and generation of effector responses against self-antigens. Re-establishment of tolerance in autoimmune disorders was always the most desired treatment option; however, despite many efforts, clinical trials have been largely unsuccessful. This also applies to the generation of oral tolerance, which seems to be a default response type of the mucosa-associated lymphoid tissues to harmless antigens. In this study, we report improved efficacy of oral tolerance induction by coupling antigen with the newly identified mucosal carrier peptide 13C...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28300562/hypoxia-and-b-cells
#5
Natalie Burrows, Patrick Henry Maxwell
The ability of cells to sense and adapt to changes in oxygen is mediated by hypoxia-inducible factor (HIF). Immune cells function in physiologically complex and varying environments whereby oxygen, pH, nutrients, metabolites and cytokines are continuously fluctuating. HIF is well known to play an important role in coordinating the adaptation and function of both innate immune cells and T cells in these complex environments. This review summarises recent discoveries concerning how hypoxia and HIF control B cell behaviour, and regulate antibody quality and decisions concerning tolerance...
March 12, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28298565/longterm-effectiveness-of-herpes-zoster-vaccine-among-patients-with-autoimmune-and-inflammatory-diseases
#6
Huifeng Yun, Fenglong Xie, John W Baddley, Kevin Winthrop, Kenneth G Saag, Jeffrey R Curtis
OBJECTIVE: The protection duration of herpes zoster (HZ) vaccination is unclear among patients with autoimmune (AI) diseases. METHODS: Using 2006-2013 Medicare data, HZ vaccinated patients with AI were matched 1:2 to unvaccinated HZ. Incidence rates (IR) and adjusted risk ratios over time were calculated using Poisson regression. RESULTS: Of 59,627 vaccinated patients, crude IR increased from 0.75/100 person-years during the first year post-vaccination to 1...
March 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28295248/t-regulatory-cells-are-critical-for-the-maintenance-anamnestic-expansion-and-protection-elicited-by-vaccine-induced-cd8-t-cells
#7
Mitra Bhattacharyya, Pablo Penaloza MacMaster
T regulatory cells (Tregs) are critical for preventing autoimmunity and suppressing immune responses during cancer and chronic infection. However, the role of Tregs in the generation of vaccine-induced immune memory remains ill-defined. Using the mouse model of lymphocytic choriomeningitis virus (LCMV) infection, we demonstrate that transient absence of Tregs during effector to memory CD8 T cell transition results in a permanent impairment in the maintenance, function, and recall capacity of CD8 T cells. Memory CD8 T cells in mice that were transiently depleted of Tregs exhibited defective upregulation of memory markers with a significant decrease in polyfunctionality...
March 14, 2017: Immunology
https://www.readbyqxmd.com/read/28286158/smith-magenis-syndrome-patients-often-display-antibody-deficiency-but-not-other-immune-pathologies
#8
Tiffany Perkins, Jacob M Rosenberg, Carole Le Coz, Joseph T Alaimo, Melissa Trofa, Sureni V Mullegama, Richard J Antaya, Soma Jyonouchi, Sarah H Elsea, Paul J Utz, Eric Meffre, Neil Romberg
BACKGROUND: Smith-Magenis syndrome (SMS) is a complex neurobehavioral disorder associated with recurrent otitis. Most SMS cases result from heterozygous interstitial chromosome 17p11.2 deletions that encompass not only the intellectual disability gene retinoic acid-induced 1 but also other genes associated with immunodeficiency, autoimmunity, and/or malignancy. OBJECTIVES: The goals of this study were to describe the immunological consequence of 17p11.2 deletions by determining the prevalence of immunological diseases in subjects with SMS and by assessing their immune systems via laboratory methods...
March 9, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28276306/designing-an-effective-vaccine-to-prevent-epstein-barr-virus-associated-diseases-challenges-and-opportunities
#9
Vijayendra Dasari, Kunal H Bhatt, Corey Smith, Rajiv Khanna
Epstein-Barr virus (EBV) is a ubiquitous herpesvirus associated with a number of clinical manifestations. Primary EBV infection in young adolescents often manifests as acute infectious mononucleosis and latent infection is associated with multiple lymphoid and epithelial cancers and autoimmune disorders, particularly multiple sclerosis. Areas covered: Over the last decade, our understanding of pathogenesis and immune regulation of EBV-associated diseases has provided an important platform for the development of novel vaccine formulations...
April 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28268073/vaccinations-in-early-life-are-not-associated-with-development-of-islet-autoimmunity-in-type-1-diabetes-high-risk-children-results-from-prospective-cohort-data
#10
Andreas Beyerlein, Andreas N Strobl, Christiane Winkler, Michaela Carpus, Annette Knopff, Ewan Donnachie, Donna P Ankerst, Anette-G Ziegler
AIMS/HYPOTHESIS: Vaccinations in early childhood potentially stimulate the immune system and may thus be relevant for the pathogenesis of autoimmune diseases such as type 1 diabetes (T1D). We determined the association of vaccination burden with T1D-associated islet autoimmunity in children with high familial risk followed prospectively from birth. METHODS: A total of 20,570 certified vaccination records from 1918 children were correlated with time to onset of T1D-associated islet autoimmunity using Cox regression, considering multiple time periods up until age two years and vaccination types, and adjusting for HLA genotype, sex, delivery mode, season of birth, preterm delivery and maternal T1D status...
March 3, 2017: Vaccine
https://www.readbyqxmd.com/read/28264143/a-flowcytometric-analysis-to-efficiently-quantify-multiple-innate-immune-cells-and-t-cell-subsets-in-human-blood
#11
D F Draxler, M T Madondo, G Hanafi, M Plebanski, R L Medcalf
The balance of inflammation and immunosuppression driven by changed ratios in diverse myeloid and T cell subsets, as well as their state of activation and ability to migrate to lymphoid compartments or inflammatory sites, has emerged as a highly active area of study across clinical trials of vaccines and therapies against cancer, trauma, as well as autoimmune and infectious diseases. There is a need for effective protocols which maximally use the possibilities offered by modern flow cytometers to characterize such immune cell changes in peripheral blood using small volumes of human blood...
March 6, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28250461/the-emerging-safety-profile-of-jak-inhibitors-in-rheumatic-disease
#12
REVIEW
Kevin L Winthrop
Tofacitinib is the first Janus kinase (JAK) inhibitor commercially approved for the treatment of rheumatoid arthritis. This compound and a number of other JAK inhibitors are currently being tested in phase II and III trials for the treatment of a variety of autoimmune inflammatory diseases. Whereas a characteristic safety profile is emerging for some JAK inhibitors, differences between individual agents might emerge on the basis of distinct potency against their molecular targets. Similarly to biological therapy, JAK inhibition can lead to serious and opportunistic infections, and viral infections seem to be particularly frequent...
April 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28247302/an-update-on-the-genetic-polymorphism-of-hla-b-27-with-213-alleles-encompassing-160-subtypes-and-still-counting
#13
REVIEW
Muhammad A Khan
PURPOSE OF REVIEW: This publication updates an earlier review on the ever increasing knowledge about genetic polymorphism of HLA-B*27 and discusses its clinical relevance. RECENT FINDINGS: As of January 1, 2017, there are 213 known alleles of HLA-B*27 at nucleotide sequence level, while at the translated protein level, there are 160 known subtypes based on one or more amino acid sequence differences. Some of these subtypes exhibit differential association with ankylosing spondylitis, and there may even be some level of hierarchy in this regard...
February 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28240614/diagnostic-and-therapeutic-considerations-in-patients-with-hypogammaglobulinemia-after-rituximab-therapy
#14
Ruba Kado, Georgiana Sanders, W Joseph McCune
PURPOSE OF REVIEW: There are no established guidelines for evaluating and treating hypogammaglobulinemia in patients with rheumatic disease who receive B-cell depleting agents. The purpose of this article is to review findings in the work-up and treatment of common variable immunodeficiency (CVID) that can guide our evaluation of patients with autoimmune disease who develop hypogammaglobulinemia after rituximab/B-cell depleting therapy. RECENT FINDINGS: Infection rates are higher in rheumatic disease patients who develop hypogammaglobulinemia than those who do not...
February 24, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28228759/interleukin-35-producing-cd8%C3%AE-dendritic-cells-acquire-a-tolerogenic-state-and-regulate-t-cell-function
#15
Sergio Haller, Anaïs Duval, Romain Migliorini, Mathias Stevanin, Vanessa Mack, Hans Acha-Orbea
Dendritic cells (DCs) play a central role in shaping immunogenic as well as tolerogenic adaptive immune responses and thereby dictate the outcome of adaptive immunity. Here, we report the generation of a CD8α(+) DC line constitutively secreting the tolerogenic cytokine interleukin (IL)-35. IL-35 secretion led to impaired CD4(+) and CD8(+) T lymphocyte proliferation and interfered with their function in vitro and also in vivo. IL-35 was furthermore found to induce a tolerogenic phenotype on CD8α(+) DCs, characterized by the upregulation of CD11b, downregulation of MHC class II, a reduced costimulatory potential as well as production of the immunomodulatory molecule IL-10...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28228257/t-regulatory-cells-support-plasma-cell-populations-in-the-bone-marrow
#16
Arielle Glatman Zaretsky, Christoph Konradt, Fabien Dépis, James B Wing, Radhika Goenka, Daniela Gomez Atria, Jonathan S Silver, Sunglim Cho, Amaya I Wolf, William J Quinn, Julie B Engiles, Dorothy C Brown, Daniel Beiting, Jan Erikson, David Allman, Michael P Cancro, Shimon Sakaguchi, Li-Fan Lu, Christophe O Benoist, Christopher A Hunter
Long-lived plasma cells (PCs) in the bone marrow (BM) are a critical source of antibodies after infection or vaccination, but questions remain about the factors that control PCs. We found that systemic infection alters the BM, greatly reducing PCs and regulatory T (Treg) cells, a population that contributes to immune privilege in the BM. The use of intravital imaging revealed that BM Treg cells display a distinct behavior characterized by sustained co-localization with PCs and CD11c-YFP(+) cells. Gene expression profiling indicated that BM Treg cells express high levels of Treg effector molecules, and CTLA-4 deletion in these cells resulted in elevated PCs...
February 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28228112/three-case-reports-of-post-immunization-and-post-viral-bullous-pemphigoid-looking-for-the-right-trigger
#17
Luca Baroero, Paola Coppo, Laura Bertolino, Stefano Maccario, Francesco Savino
BACKGROUND: Bullous pemphigoid (BP) is a blistering skin disorder infrequent in infancy and rarely reported in medical literature. CASE PRESENTATION: Here we describe three cases of BP which were referred to our department in the last 15 years. Two of them developed an eruption of bullous lesions just a few days after vaccination for diphtheria, tetanus, pertussis, poliomyelitis, hepatitis B and Haemophilus influenzae B. The third patient developed the same blistering lesions shortly after herpetic stomatitis...
February 23, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28222511/evaluation-of-a-dna-a%C3%AE-42-vaccine-in-aged-nzw-rabbits-antibody-kinetics-and-immune-profile-after-intradermal-immunization-with-full-length-dna-a%C3%AE-42-trimer
#18
Doris Lambracht-Washington, Min Fu, Mary Wight-Carter, Matthew Riegel, Roger N Rosenberg
A pathological hallmark of Alzheimer's disease (AD) are amyloid plaques in the brain consisting of aggregated amyloid-β 42 peptide (Aβ42) derived from cellular amyloid-β protein precursor (AβPP). Based on successful experiments in mouse AD models, active immunization with Aβ42 peptide and passive immunizations with anti-Aβ42 antibodies were started in clinical trials. Active Aβ42 peptide immunization in humans had led to an inflammatory autoimmune response, and the trial was stopped. Passive immunizations had shown some effects in slowing AD pathology...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28205558/plant-based-vaccines-for-oral-delivery-of-type-1-diabetes-related-autoantigens-evaluating-oral-tolerance-mechanisms-and-disease-prevention-in-nod-mice
#19
Amanda L Posgai, Clive H Wasserfall, Kwang-Chul Kwon, Henry Daniell, Desmond A Schatz, Mark A Atkinson
Autoantigen-specific immunological tolerance represents a central objective for prevention of type 1 diabetes (T1D). Previous studies demonstrated mucosal antigen administration results in expansion of Foxp3(+) and LAP(+) regulatory T cells (Tregs), suggesting oral delivery of self-antigens might represent an effective means for modulating autoimmune disease. Early preclinical experiments using the non-obese diabetic (NOD) mouse model reported mucosal administration of T1D-related autoantigens [proinsulin or glutamic acid decarboxylase 65 (GAD)] delayed T1D onset, but published data are conflicting regarding dose, treatment duration, requirement for combinatorial agents, and extent of efficacy...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202760/restriction-of-hcmv-replication-by-isg15-a-host-effector-regulated-by-cgas-sting-dsdna-sensing
#20
Christopher Bianco, Ian Mohr
Accumulation of the interferon-stimulated gene (ISG) 15 protein product, which is reversibly conjugated to numerous polypeptide targets, impacts the proteome and physiology of uninfected and infected cells. While many viruses, including human cytomegalovirus (HCMV) blunt host antiviral defenses by limiting ISG expression, the overall abundance of ISG15 monomer and protein conjugates rises in HCMV-infected cells. However, the molecular signals underlying ISG15 accumulation and whether the ISG15 polypeptide itself influences HCMV infection biology remain unknown...
February 15, 2017: Journal of Virology
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