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Immunology Letters

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https://www.readbyqxmd.com/read/28528128/comparison-of-the-diagnostic-value-of-four-scoring-systems-in-primary-sj%C3%A3-gren-s-syndrome-patients
#1
Xuan Qi, Chao Sun, Yu Tian, Yuxiang Han, Chenxing Peng, Hongtao Jin, Lixia Gao
PURPOSE: We attempted to evaluate the diagnostic value of different salivary gland ultrasonography (SGUS) scoring systems for primary sjögren's syndrome (pSS). METHODS: Total 134 patients with pSS and 109 non-SS sicca controls were included in our study. All the cases were evaluated by four scoring systems (such as 0-16 SGUS, 0-3 SGUS, Parotid glands and Submandibular salivary glands scoring system). The receiver operating characteristic (ROC) analysis was performed for the four scoring systems...
May 17, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526582/mait-cells-a-tailor-made-mate-in-the-ancient-battle-against-infectious-diseases
#2
REVIEW
Marcela de Lima Moreira, Moriya Tsuji, Alexandra Jane Corbett, Márcio Sobreira Silva Araújo, Andréa Teixeira-Carvalho, Olindo Assis Martins-Filho, Vanessa Peruhype-Magalhães, Jordana Grazziela Coelho-Dos-Reis
It has been almost two decades since the discovery of mucosal-associated invariant T (MAIT)-cells. Several advances in the field have been made such as the discovery of the antimicrobial activity of MAIT-cells, the abundance of these cells in human mucosa and in liver and the discovery of ligands able to bind MR1 and activate MAIT-cells. MAIT-cells are a unique subset of innate-like T-cells that express a canonical T-cell receptor with the alpha chain containing hAV7S2 and AJ33 in humans (TCRVα7.2Jα33) and respond to bacterial/fungus vitamin B2 metabolites by an MR1-dependent pathway...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526581/a-novel-mouse-model-of-chronic-prostatitis-chronic-pelvic-pain-syndrome-induced-by-immunization-of-special-peptide-fragment-with-aluminum-hydroxide-adjuvant
#3
Farhan Ullah Khan, Awais Ullah Ihsan, Waqas Nawaz, Muhammad Zahid Khan, Mengqi Yang, Gang Wang, Xiaoqian Liao, Lei Han, Xiaohui Zhou
OBJECTIVES: CP/CPPS is a commonly observed distress in male patients. Because of its little-known etiology, no effective therapy has been developed which has promising outcomes. Therefore, there is a need to develop a valid model which can mimic the etiology of CP/CPPS. MATERIALS AND METHODS: Fifty male C57BL/6 mice were randomly and averagely divided into 5 groups of 10 mice each. The control group was injected with 0.9% NaCl solution. Aluminum hydroxide and T2 groups were injected with aluminum hydroxide adjuvant and T2 peptide...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526580/biomarkers-for-rheumatoid-arthritis-from-molecular-processes-to-diagnostic-applications-current-concepts-and-future-perspectives
#4
REVIEW
Britt Nakken, Gábor Papp, Vidar Bosnes, Margit Zeher, György Nagy, Peter Szodoray
Early diagnosis and immediately started appropriate treatment are mandatory for the prevention of radiographic progression, functional disability and unfavourable disease outcome in rheumatoid arthritis (RA). The current classification criteria for RA include two different types of biomarkers representing inflammatory processes, such as C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) or immune processes including autoantibodies, such as rheumatoid factor (RF) and antibodies against citrullinated proteins (ACPA)...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28511837/immunomodulatory-activity-of-recombinant-%C3%AE-gliadin-conjugated-to-cholera-toxin-in-dq8-transgenic-mice
#5
Stefano Rossi, Diomira Luongo, Francesco Maurano, Paolo Bergamo, Mauro Rossi
Coeliac disease (CD) is characterized by an intestinal lesion sustained by an abnormal mucosal T-cell response to wheat gliadin. An immunological approach that is able to suppress this immune response is a perspective worth pursuing. Several strategies of antigen administration have been aimed at the downregulation of pathogenic T-cells. In particular, we previously reported a significant suppression of the systemic cell-mediated response toward wheat gliadin in DQ8 transgenic mice receiving nasally a recombinant α-gliadin...
May 13, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28506774/immunomodulatory-and-protective-effects-of-adipose-tissue-derived-mesenchymal-stem-cells-in-an-allograft-islet-composite-transplantation-for-experimental-autoimmune-type-1-diabetes
#6
Jamal Mohammadi Ayenehdeh, Bahare Niknam, Shim Rasouli, Seyed Mahmoud Hashemi, Hossein Rahavi, Nima Rezaei, Masoud Soleimani, Ali Liaeiha, Mohammad Hossein Niknam, Nader Tajik
BACKGROUND: Allogeneic islet transplantation could be an ideal alternative therapy for Type 1 Diabetes Mellitus (T1DM). Adipose Tissue-derived Mesenchymal Stem Cells (AT-MSCs) characterized by immunomodulatory and protective effects may have the potential to improve the outcome of this highly immunogenic transplant. METHODS: Syngenic AT-MSCs along with allograft islets embedded in hydrogelic composite and transplanted intraperitoneally in Streptozotocin (STZ) induced diabetic C57BL/6 mice...
May 12, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28495513/high-hydrostatic-pressure-affects-antigenic-pool-in-tumor-cells-implication-for-dendritic-cell-based-cancer-immunotherapy
#7
Linda Urbanova, Nada Hradilova, Irena Moserova, Sarka Vosahlikova, Lenka Sadilkova, Michal Hensler, Radek Spisek, Irena Adkins
High hydrostatic pressure (HHP) can be used to generate dendritic cell (DC)-based active immunotherapy for prostate, lung and ovarian cancer. We showed here that HHP treatment of selected human cancer cell lines leads to a degradation of tumor antigens which depends on the magnitude of HHP applied and on the cancer cell line origin. Whereas prostate or ovarian cell lines displayed little protein antigen degradation with HHP treatment up to 300MPa after 2h, tumor antigens are hardly detected in lung cancer cell line after treatment with HHP 250MPa at the same time...
May 8, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28495399/evaluation-of-toll-like-receptor-gene-family-variants-as-prognostic-biomarkers-in-rheumatoid-arthritis
#8
Silvia Torices, Lorena Alvarez-Rodríguez, Ignacio Varela, Pedro Muñoz, Alejandro Balsa, M López-Hoyos, Víctor Martinez-Taboada, Jose L Fernández-Luna
Rheumatoid arthritis (RA) is a systemic autoimmune disease whose main feature is persistent joint inflammation. Toll-like receptors (TLRs) play critical roles in the activation of innate and adaptive immune responses, and influence the activity of NFκB, a key player in chronic inflammation. We aimed at investigating the association of TLR allelic variants with susceptibility and severity of RA through a systematic, high-throughput, analysis of TLR genes. All coding exons and flanking regions of nine members of the TLR family (TLR1-9) were analyzed in 66 patients with RA and 30 healthy controls by next generation sequencing...
May 7, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28487097/systemic-and-mucosal-immune-responses-elicited-by-intranasal-immunization-with-a-pneumococcal-bacterium-like-particle-based-vaccine-displaying-pneumolysin-mutant-plym2
#9
Jingcai Lu, Hongjia Hou, Dandan Wang, Kees Leenhouts, Maarten L van Roosmalen, Tianxu Sun, Tiejun Gu, Yueshuang Song, Chunlai Jiang, Wei Kong, Yongge Wu
Pneumolysin (Ply) is an important virulence factor in pneumococcal infection and a conserved cholesterol-binding cytotoxin expressed by all serotypes of Streptococcus pneumoniae. We previously developed a highly detoxified Ply mutant designated Plym2 by replacement of two amino acids (C428G and W433F), which lost cytotoxicity but retained the ability to induce neutralizing antibodies. In the present work, we applied bacterium-like particles (BLPs) as a carrier and immunostimulant for the development of a Plym2 intranasal vaccine, in which the Plym2 protein was displayed on the surface of BLPs...
May 6, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28487096/effects-of-pidotimod-soluble-powder-and-immune-enhancement-of-newcastle-disease-vaccine-in-chickens
#10
Shaoqi Qu, Cunchun Dai, Mei Qiu, Ruili Zhang, Chunyuan Wang, Liangliang Cui, Zhihui Hao
The aims of this study were to prepare pidotimod (PDM) soluble powder and to investigate the immune enhancement properties of PDM in chickens vaccinated with Newcastle disease virus vaccine. In vivo experiment, 360 6-day-old chickens were averagely divided into 6 groups. The chickens, except blank control (BC) group, were vaccinated with Newcastle disease vaccine (NDV). At the same time of the vaccination, the chickens in three PDM groups were given water with PDM for 5days, respectively, with the PDM at low, medium and high concentrations (0...
May 6, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28479111/co-utilization-of-a-tlr5-agonist-and-nano-formulation-of-hiv-1-vaccine-candidate-leads-to-increased-vaccine-immunogenicity-and-decreased-immunogenic-dose-a-preliminary-study
#11
Hajar Rostami, Masoumeh Ebtekar, Mehdi Shafiee Ardestani, Mohammad Hossein Yazdi, Mehdi Mahdavi
Vaccines currently available for AIDS show poor efficiency, demonstrating the need for new strategies to increase their immunogenicity. In this study, the HIV-1P24-Nef peptide was used as a model vaccine, followed by utilization of a novel strategy to increase its immunogenicity. There is a growing interest in using TLR agonists for vaccine formulations. Such molecules bind to their receptors on immune cells, especially the cell surface of antigen presenting cells, thereby activating these cells and inflammatory responses...
May 4, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28472641/recombinant-allergy-vaccines-based-on-allergen-derived-b-cell-epitopes
#12
REVIEW
Rudolf Valenta, Raffaela Campana, Verena Niederberger
Immunoglobulin E (IgE)-associated allergy is the most common immunologically-mediated hypersensitivity disease. It affects more than 25% of the population. In IgE-sensitized subjects, allergen encounter can causes a variety of symptoms ranging from hayfever (allergic rhinoconjunctivitis) to asthma, skin inflammation, food allergy and severe life-threatening anaphylactic shock. Allergen-specific immunotherapy (AIT) is based on vaccination with the disease-causing allergens. AIT is an extremely effective, causative and disease-modifying treatment...
May 1, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28472640/cytokine-profile-of-nalt-during-acute-stress-and-its-possible-effect-on-iga-secretion
#13
Juan Manuel Gutiérrez-Meza, Rosa Adriana Jarillo-Luna, Victor Rivera-Aguilar, Angel Miliar-García, Rafael Campos-Rodríguez
Stress stimuli affect the immune system responses that occur at mucosal membranes, particularly IgA secretion. It has been suggested that acute stress increases the levels of IgA and that sympathetic innervation plays an important role in this process. We herein explore in a murine model how acute stress affects the Th1/Th2/Treg cytokine balance in NALT, and the possible role of glucocorticoids in this effect. Nine-week-old male CD1 mice were divided into three groups: unstressed (control), stressed (subjected to 4h of immobilization), and stressed after pretreatment with a single dose of the corticosterone receptor antagonist RU-486...
May 1, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28455167/protective-and-pathogenic-memory-plasma-cells
#14
REVIEW
Bimba F Hoyer, Andreas Radbruch
The immune system can be divided into two major parts: innate and adaptive immunity. Adaptive immunity is characterized by its major cellular players: the B and T cells. B cells will, in the context of an immune reaction, differentiate into plasma cells. These plasma cells produce antibodies, which are secreted. Antibodies are characterized by their specificity against a selected antigen and by their isotype. The isotype changes with the duration or phase of the immune reaction. Early immune reactions are usually characterized by the predominant production of IgM antibodies...
April 25, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28445705/mutation-characterization-and-heterodimer-analysis-of-patients-with-leukocyte-adhesion-deficiency-including-one-novel-mutation
#15
Shahram Teimourian, Martin De Boer, Dirk Roos, Anna Isaian, Ehsan Moghanloo, Sharhzad Lashkary, Bita Hassani, Hasan Mollanoori, Vahid Babaei, Asaad Azarnezhad
BACKGROUND AND AIM: Leukocyte adhesion deficiency type 1 (LAD-I) is a rare, autosomal recessive disorder of neutrophil migration, characterized by severe, recurrent bacterial infections, inadequate pus formation and impaired wound healing. The ITGB2 gene encodes the β2 integrin subunit (CD18) of the leukocyte adhesion cell molecules, and mutations in this gene cause LAD-I. The aim of the current study was to investigate the mutations in patients diagnosed with LAD-I and functional studies of the impact of two previously reported and a novel mutation on the expression of the CD18/CD11a heterodimer...
April 23, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28442365/b-cell-activating-factor-regulates-the-survival-of-b-lymphocytes-infected-with-human-cytomegalovirus
#16
Haiyan Xu, Panpan Dong, Xuyi Ma, Dan Song, Dong Xue, Renfang Xu, Hao Lu, Xiaozhou He
BACKGROUND: Previous studies have suggested that B lymphocytes can be polyclonally activated by human cytomegalovirus (HCMV), and individuals infected by HCMV exhibit characteristic features of an autoimmunity disease. B cell-activating factor (BAFF) plays important roles in the survival and differentiation of B cells; however, few studies have examined the potential role of BAFF on B cells infected by HCMV. METHODS: HCMV virus strain (HCMV AD-169) was concentrated by normal methods and used to infect microbead-purified tonsil CD19+ B cells...
April 23, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28431963/expansion-of-circulating-follicular-t-helper-cells-associates-with-disease-severity-in-childhood-atopic-dermatitis
#17
Krisztina Szabó, Krisztián Gáspár, Zsolt Dajnoki, Gábor Papp, Beáta Fábos, Andrea Szegedi, Margit Zeher
Follicular helper T (TFH) cells play crucial role in B-cell differentiation and antibody production. Although, atopic dermatitis (AD) is often associated with increased serum IgE levels, B-cell mediated responses have not been studied thoroughly. The aim of our study was to investigate the proportion of TFH-like cells in the disease. Twelve children and 17 adults with AD as well as 14 healthy controls were enrolled in the study. The frequency of CD4(+)CXCR5(+)ICOS(+)PD-1(+) TFH-like cells and their IL-21 cytokine production were determined by flow cytometry...
April 18, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28427887/the-detection-of-antigenic-determinants-of-acinetobacter-baumannii
#18
Dina M Tawfik, Tarek A Ahmad, Salah A Sheweita, Medhat Haroun, Laila H El-Sayed
BACKGROUND: Acinetobacter baumannii continues to pose a threat to burdened patients in ICUs all around the world. Lately, infection control techniques are not sufficient to curb A. baumannii's progression and chemotherapeutics are losing their potency against it. Thus, immunization became a key player in providing an ideal solution to the dilemma. None of the vaccines under investigation have reached the market and the search for a tailored vaccine remains a challenge. The notion of unravelling the bacterial antigens to design a novel epitope-based vaccine proved its merits...
April 18, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28414184/mouse-cytomegalovirus-encoded-immunoevasins-and-evolution-of-ly49-receptors-sidekicks-or-enemies
#19
REVIEW
Jelena Zeleznjak, Branka Popovic, Astrid Krmpotic, Stipan Jonjic, Vanda Juranic Lisnic
Cytomegaloviruses (CMVs) have dedicated a large portion of their genome towards immune evasion targeting many aspects of the host immune system, particularly NK cells. However, the host managed to cope with the infection by developing multiple mechanisms to recognize viral threat and counterattack it, thus illustrating never-ending evolutionary interplay between CMV and its host. In this review, we will focus on several mechanisms of NK cell evasion by mouse CMV (MCMV), the role of host inhibitory and activating Ly49 receptors involved in the virus control and acquisition of adaptive features by NK cells as a consequence of MCMV infection...
April 13, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28414183/nkg2d-a-versatile-player-in-the-immune-system
#20
REVIEW
Vedrana Jelenčić, Maja Lenartić, Felix M Wensveen, Bojan Polić
NKG2D is known as a potent activating receptor of the immune system. It is expressed on a multitude of immune cells, including NK cells and different subsets of T cells. NKG2D recognizes various MHC I-like ligands that are induced on target cells exposed to stressors such as viral infection, DNA damage and oncological transformation. NKG2D drives or facilitates cytotoxic and cytokine responses towards cells expressing its ligands to eliminate the threat. Therefore, NKG2D is usually classified as a sensor that translates cellular stress into activation signals for immune cells...
April 13, 2017: Immunology Letters
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