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Frontiers in Immunology

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https://www.readbyqxmd.com/read/28804489/normalized-synergy-predicts-that-cd8-co-receptor-contribution-to-t-cell-receptor-tcr-and-pmhc-binding-decreases-as-tcr-affinity-increases-in-human-viral-specific-t-cells
#1
Chad M Williams, Alexandra A Schonnesen, Shu-Qi Zhang, Ke-Yue Ma, Chenfeng He, Tori Yamamoto, S Gail Eckhardt, Christopher A Klebanoff, Ning Jiang
The discovery of naturally occurring T cell receptors (TCRs) that confer specific, high-affinity recognition of pathogen and cancer-associated antigens remains a major goal in cellular immunotherapies. The contribution of the CD8 co-receptor to the interaction between the TCR and peptide-bound major histocompatibility complex (pMHC) has previously been correlated with the activation and responsiveness of CD8(+) T cells. However, these studies have been limited to model systems of genetically engineered hybridoma TCRs or transgenic mouse TCRs against either a single epitope or an array of altered peptide ligands...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28804488/anti-adhesion-therapies-in-inflammatory-bowel-disease-molecular-and-clinical-aspects
#2
REVIEW
Sebastian Zundler, Emily Becker, Carl Weidinger, Britta Siegmund
The number of biologicals for the therapy of immunologically mediated diseases is constantly growing. In contrast to other agents that were previously introduced in rheumatologic or dermatologic diseases and only later adopted for the treatment of inflammatory bowel diseases (IBDs), the field of IBD was ground breaking for the concept of anti-adhesion blockade. Anti-adhesion antibodies selectively target integrins controlling cell homing to the intestine, which leads to reduction of inflammatory infiltration to the gut in chronic intestinal inflammation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28804487/the-response-of-phagocytes-to-indoor-air-toxicity
#3
Liisa K Vilén, Janne Atosuo, Esa-Matti Lilius
This perspective presents a viewpoint on potential methods assessing toxicity of indoor air. Until recently, the major techniques to document moldy environment have been microbial isolation using conventional culture techniques for fungi and bacteria as well as in some instances polymerase chain reaction to detect microbial genetic components. However, it has become increasingly evident that bacterial and fungal toxins, their metabolic products, and volatile organic substances emitted from corrupted constructions are the major health risks...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28804486/first-association-of-interleukin-12-receptor-beta-1-deficiency-with-sj%C3%A3-gren-s-syndrome
#4
Georgios Sogkas, Faranaz Atschekzei, Vivien Schacht, Christian von Falck, Alexandra Jablonka, Roland Jacobs, Matthias Stoll, Torsten Witte, Reinhold E Schmidt
INTRODUCTION: Interleukin 12 receptor beta 1 (IL12Rβ1) deficiency is a primary immunodeficiency resulting mainly in susceptibility to opportunistic infection by non-tuberculous, environmental mycobacteria and severe infection caused by Salmonella spp. Till now, less than 300 patients with IL12Rβ1 deficiency have been reported. Among them, only three have been described to develop autoimmunity. CASE PRESENTATION: We present the case of a 50-year-old male with IL12Rβ1 deficiency due to compound heterozygosity [c...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28804485/transcriptional-profiling-of-midguts-prepared-from-trypanosoma-t-congolense-positive-glossina-palpalis-palpalis-collected-from-two-distinct-cameroonian-foci-coordinated-signatures-of-the-midguts-remodeling-as-t-congolense-supportive-niches
#5
Jean M Tsagmo Ngoune, Flobert Njiokou, Béatrice Loriod, Ginette Kame-Ngasse, Nicolas Fernandez-Nunez, Claire Rioualen, Jacques van Helden, Anne Geiger
Our previous transcriptomic analysis of Glossina palpalis gambiensis experimentally infected or not with Trypanosoma brucei gambiense aimed to detect differentially expressed genes (DEGs) associated with infection. Specifically, we selected candidate genes governing tsetse fly vector competence that could be used in the context of an anti-vector strategy, to control human and/or animal trypanosomiasis. The present study aimed to verify whether gene expression in field tsetse flies (G. p. palpalis) is modified in response to natural infection by trypanosomes (T...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28804484/neutrophil-extracellular-traps-open-the-pandora-s-box-in-severe-malaria
#6
Sebastian Boeltz, Luis E Muñoz, Tobias A Fuchs, Martin Herrmann
No abstract text is available yet for this article.
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28804483/the-impact-of-western-diet-and-nutrients-on-the-microbiota-and-immune-response-at-mucosal-interfaces
#7
REVIEW
Donjete Statovci, Mònica Aguilera, John MacSharry, Silvia Melgar
Recent findings point toward diet having a major impact on human health. Diets can either affect the gut microbiota resulting in alterations in the host's physiological responses or by directly targeting the host response. The microbial community in the mammalian gut is a complex and dynamic system crucial for the development and maturation of both systemic and mucosal immune responses. Therefore, the complex interaction between available nutrients, the microbiota, and the immune system are central regulators in maintaining homeostasis and fighting against invading pathogens at mucosal sites...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28804482/risk-factors-for-intensive-care-unit-admission-in-patients-with-autoimmune-encephalitis
#8
Gayane Harutyunyan, Larissa Hauer, Martin W Dünser, Tobias Moser, Slaven Pikija, Markus Leitinger, Helmut F Novak, Wolfgang Aichhorn, Eugen Trinka, Johann Sellner
BACKGROUND: Prevention and early recognition of critical illness in patients with autoimmune encephalitis (AE) is essential to achieve better outcome. AIM OF THE STUDY: To evaluate risk factors for intensive care unit (ICU) admission and its prognostic impact in patients with AE. PATIENTS AND METHODS: A reclassification of patients hospitalized between 2011 and 2016 revealed 17 "definite" and 15 "probable" AE cases. Thirteen patients (41%) developed critical illness and required ICU admission...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798751/role-of-dendritic-cells-in-inflammation-and-loss-of-tolerance-in-the-elderly
#9
REVIEW
Anshu Agrawal, Sudhanshu Agrawal, Sudhir Gupta
Dendritic cells (DCs) play an important role in advancing age-associated progressive decline in adaptive immune responses, loss of tolerance, and development of chronic inflammation. In aged humans, DCs secrete increased levels of pro-inflammatory cytokines and decreased levels of anti-inflammatory and immune-regulatory cytokines. This may contribute to both chronic inflammation and loss of tolerance in aging. Aged DCs also display increased immune response against self-antigens contributing further to both inflammation and loss of tolerance...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798750/heme-oxygenase-1-expression-contributes-to-the-immunoregulation-induced-by-fasciola-hepatica-and-promotes-infection
#10
Paula Carasi, Ernesto Rodríguez, Valeria da Costa, Sofía Frigerio, Natalie Brossard, Verónica Noya, Carlos Robello, Ignacio Anegón, Teresa Freire
Fasciola hepatica, also known as the liver fluke, is a trematode that infects livestock and humans causing fasciolosis, a zoonotic disease of increasing importance due to its worldwide distribution and high economic losses. This parasite immunoregulates the host immune system by inducing a strong Th2 and regulatory T immune response by immunomodulating dendritic cell (DC) maturation and alternative activation of macrophages. In this paper, we show that F. hepatica infection in mice induces the upregulation of heme-oxygenase-1 (HO-1), the rate-limiting enzyme in the catabolism of free heme that regulates the host inflammatory response...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798749/enhancement-of-adjuvant-functions-of-natural-killer-t-cells-using-nanovector-delivery-systems-application-in-anticancer-immune-therapy
#11
REVIEW
Reem Ghinnagow, Luis Javier Cruz, Elodie Macho-Fernandez, Christelle Faveeuw, François Trottein
Type I natural killer T (NKT) cells have gained considerable interest in anticancer immune therapy over the last decade. This "innate-like" T lymphocyte subset has the unique ability to recognize foreign and self-derived glycolipid antigens in association with the CD1d molecule expressed by antigen-presenting cells. An important property of these cells is to bridge innate and acquired immune responses. The adjuvant function of NKT cells might be exploited in the clinics. In this review, we discuss the approaches currently being used to target NKT cells for cancer therapy...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798748/role-of-type-i-and-ii-interferons-in-colorectal-cancer-and-melanoma
#12
REVIEW
Simone Di Franco, Alice Turdo, Matilde Todaro, Giorgio Stassi
Cancer can be considered an aberrant organ with a hierarchical composition of different cell populations. The tumor microenvironment, including the immune cells and related cytokines, is crucial during all the steps of tumor development. In particular, type I and II interferons (IFNs) are involved in a plethora of mechanisms that regulate immune responses in cancer, thus balancing immune escape versus immune surveillance. IFNs are involved in both the direct and indirect regulation of cancer cell proliferation and metastatic potential...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798747/defining-natural-antibodies
#13
Nichol E Holodick, Nely Rodríguez-Zhurbenko, Ana María Hernández
The traditional definition of natural antibodies (NAbs) states that these antibodies are present prior to the body encountering cognate antigen, providing a first line of defense against infection thereby, allowing time for a specific antibody response to be mounted. The literature has a seemingly common definition of NAbs; however, as our knowledge of antibodies and B cells is refined, re-evaluation of the common definition of Nabs may be required. Defining Nabs becomes important as the function of NAb production is used to define B cell subsets (1) and as these important molecules are shown to play numerous roles in the immune system (Figure 1)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798746/automated-analysis-of-flow-cytometry-data-to-reduce-inter-lab-variation-in-the-detection-of-major-histocompatibility-complex-multimer-binding-t-cells
#14
Natasja Wulff Pedersen, P Anoop Chandran, Yu Qian, Jonathan Rebhahn, Nadia Viborg Petersen, Mathilde Dalsgaard Hoff, Scott White, Alexandra J Lee, Rick Stanton, Charlotte Halgreen, Kivin Jakobsen, Tim Mosmann, Cécile Gouttefangeas, Cliburn Chan, Richard H Scheuermann, Sine Reker Hadrup
Manual analysis of flow cytometry data and subjective gate-border decisions taken by individuals continue to be a source of variation in the assessment of antigen-specific T cells when comparing data across laboratories, and also over time in individual labs. Therefore, strategies to provide automated analysis of major histocompatibility complex (MHC) multimer-binding T cells represent an attractive solution to decrease subjectivity and technical variation. The challenge of using an automated analysis approach is that MHC multimer-binding T cell populations are often rare and therefore difficult to detect...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798745/commentary-dietary-polyphenols-promote-growth-of-the-gut-bacterium-akkermansia-muciniphila-and-attenuate-high-fat-diet-induced-metabolic-syndrome
#15
COMMENT
https://www.readbyqxmd.com/read/28798744/the-mast-cell-contact-and-coagulation-system-connection-in-anaphylaxis
#16
REVIEW
Mar Guilarte, Anna Sala-Cunill, Olga Luengo, Moisés Labrador-Horrillo, Victoria Cardona
Anaphylaxis is the most severe form of allergic reaction, resulting from the effect of mediators and chemotactic substances released by activated cells. Mast cells and basophils are considered key players in IgE-mediated human anaphylaxis. Beyond IgE-mediated activation of mast cells/basophils, further mechanisms are involved in the occurrence of anaphylaxis. New insights into the potential relevance of pathways other than mast cell and basophil degranulation have been unraveled, such as the activation of the contact and the coagulation systems...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28798743/l-arginine-uptake-by-cationic-amino-acid-transporter-promotes-intra-macrophage-survival-of-leishmania-donovani-by-enhancing-arginase-mediated-polyamine-synthesis
#17
Abhishek Mandal, Sushmita Das, Ajay Kumar, Saptarshi Roy, Sudha Verma, Ayan Kumar Ghosh, Ruby Singh, Kumar Abhishek, Savita Saini, Abul Hasan Sardar, Bidyut Purkait, Ashish Kumar, Chitra Mandal, Pradeep Das
The survival of intracellular protozoan parasite, Leishmania donovani, the causative agent of Indian visceral leishmaniasis (VL), depends on the activation status of macrophages. l-Arginine, a semi-essential amino acid plays a crucial regulatory role for activation of macrophages. However, the role of l-arginine transport in VL still remains elusive. In this study, we demonstrated that intra-macrophage survival of L. donovani depends on the availability of extracellular l-arginine. Infection of THP-1-derived macrophage/human monocyte-derived macrophage (hMDM) with Leishmania, resulted in upregulation of l-arginine transport...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28791027/cd56-in-the-immune-system-more-than-a-marker-for-cytotoxicity
#18
REVIEW
Heleen H Van Acker, Anna Capsomidis, Evelien L Smits, Viggo F Van Tendeloo
Over the past years, the phenotypic and functional boundaries distinguishing the main cell subsets of the immune system have become increasingly blurred. In this respect, CD56 (also known as neural cell adhesion molecule) is a very good example. CD56 is the archetypal phenotypic marker of natural killer cells but can actually be expressed by many more immune cells, including alpha beta T cells, gamma delta T cells, dendritic cells, and monocytes. Common to all these CD56-expressing cell types are strong immunostimulatory effector functions, including T helper 1 cytokine production and an efficient cytotoxic capacity...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28791026/decrease-of-markers-related-to-bone-erosion-in-serum-of-patients-with-musculoskeletal-disorders-after-serial-low-dose-radon-spa-therapy
#19
Aljona Cucu, Kateryna Shreder, Daniela Kraft, Paul Friedrich Rühle, Gerhart Klein, Gerhard Thiel, Benjamin Frey, Udo S Gaipl, Claudia Fournier
Musculoskeletal disorders (MSDs) are the most frequent cause of disability in Europe. Reduced mobility and quality of life of the patients are often associated with pain due to chronic inflammation. The inflammatory process, accompanied by a destruction of the cartilage and bone tissue, is discussed as a result of (A) the infiltration of immune cells into the joints, (B) an altered homeostasis of the joint cavity (synovium) with a critical role of bone remodeling cells, and (C) release of inflammatory factors including adipokines in the arthritic joint...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28791025/the-ido-ahr-axis-controls-th17-treg-immunity-in-a-pulmonary-model-of-fungal-infection
#20
Eliseu Frank de Araújo, Claudia Feriotti, Nayane Alves de Lima Galdino, Nycolas Willian Preite, Vera Lúcia Garcia Calich, Flávio Vieira Loures
In infectious diseases, the enzyme indoleamine 2,3 dioxygenase-1 (IDO1) that catalyzes the tryptophan (Trp) degradation along the kynurenines (Kyn) pathway has two main functions, the control of pathogen growth by reducing available Trp and immune regulation mediated by the Kyn-mediated expansion of regulatory T (Treg) cells via aryl hydrocarbon receptor (AhR). In pulmonary paracoccidioidomycosis (PCM) caused by the dimorphic fungus Paracoccidioides brasiliensis, IDO1 was shown to control the disease severity of both resistant and susceptible mice to the infection; however, only in resistant mice, IDO1 is induced by TGF-β signaling that confers a stable tolerogenic phenotype to dendritic cells (DCs)...
2017: Frontiers in Immunology
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