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https://www.readbyqxmd.com/read/28887632/multipeptide-coupled-nanoparticles-induce-tolerance-in-humanised-hla-transgenic-mice-and-inhibit-diabetogenic-cd8-t-cell-responses-in-type-1-diabetes
#1
Xinyu Xu, Lingling Bian, Min Shen, Xin Li, Jing Zhu, Shuang Chen, Lei Xiao, Qingqing Zhang, Heng Chen, Kuanfeng Xu, Tao Yang
AIMS/HYPOTHESIS: Induction of antigen-specific immunological tolerance may provide an attractive immunotherapy in the NOD mouse model but the conditions that lead to the successful translation to human type 1 diabetes are limited. In this study, we covalently linked 500 nm carboxylated polystyrene beads (PSB) with a mixture of immunodominant HLA-A*02:01-restricted epitopes (peptides-PSB) that may have high clinical relevance in humans as they promote immune tolerance; we then investigated the effect of the nanoparticle-peptide complexes on T cell tolerance...
September 8, 2017: Diabetologia
https://www.readbyqxmd.com/read/28883511/cytotoxic-response-against-epstein-barr-virus-coexists-with-diffuse-large-b-cell-lymphoma-tolerogenic-microenvironment-clinical-features-and-survival-impact
#2
Melina Cohen, Aldana G Vistarop, Fuad Huaman, Marina Narbaitz, Fernanda Metrebian, Elena De Matteo, María V Preciado, Paola A Chabay
Epstein-Barr Virus (EBV) is present in neoplastic cells of 15% of Asian and Latin-American diffuse large B-cell lymphoma (DLBCL) patients. Even though a tolerogenic microenvironment was recently described in DLBCL, little is known concerning immunomodulatory features induced by EBV. As suggested in Hodgkin lymphoma, EBV-specific cytotoxic T-cells are increased but showing immune exhaustion features. Hence, host immunity suppression may play a critical role in tumor progression. This study aimed to investigate, whether an association between tumor microenvironment features and EBV presence is taking place, and its clinical correlate...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28875388/intrinsic-renal-cells-induce-lymphocytosis-of-th22-cells-from-iga-nephropathy-patients-through-b7-ctla-4-and-ccl-ccr-pathways
#3
Lu Gan, Qiaoling Zhou, Xiaozhao Li, Chen Chen, Ting Meng, Jiaxi Pu, Mengyuan Zhu, Chenggen Xiao
IgA nephropathy (IgAN), the most common glomerulonephritis, has an unclear pathogenesis. The role of Th22 cells, which are intimately related to proteinuria and progression in IgAN, in mediating infection-related IgAN is unclear. This study aimed to characterize the association between intrinsic renal cells (tubular epithelial cells and mesangial cells) and Th22 cells in immune regulation of infection-related IgAN and to elucidate the impact of Th22 lymphocytosis; the proinflammatory cytokines IL-1, IL-6, and TNF-α; and CCL chemokines on kidney fibrosis...
September 5, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28873377/sea-buckthorn-hippopha%C3%A3-rhamnoides-l-oil-improves-atopic-dermatitis-like-skin-lesions-via-inhibition-of-nf-%C3%AE%C2%BAb-and-stat1-activation
#4
Dian-Dong Hou, Zheng-Hong Di, Rui-Qun Qi, He-Xiao Wang, Song Zheng, Yu-Xiao Hong, Hao Guo, Hong-Duo Chen, Xing-Hua Gao
BACKGROUND AND OBJECTIVES: The objective of this study was to evaluate the topical effects of sea buckthorn (SBT) oil on atopic dermatitis (AD)-like lesions in a mouse model generated by repeated topical administration of DNCB in BALB/c mice. METHODS: DNCB was applied repeatedly on the dorsal skin of mice to induce AD-like lesions. Following AD induction, SBT oil was applied daily on the dorsal skin for 4 weeks. The severity of skin lesions was examined macroscopically and histologically...
September 6, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28867633/borrelia-burgdorferi-basic-membrane-protein-a-could-induce-chemokine-production-in-murine-microglia-cell-line-bv2
#5
Hua Zhao, Aihua Liu, Yuhui Cui, Zhang Liang, Bingxue Li, Fukai Bao
Lyme neuroborreliosis is a nervous system infectious disease caused by Borrelia burgdorferi (B. burgdorferi). It has been demonstrated that cytokines induced by B. burgdorferi are related to Lyme neuroborreliosis. Microglia is known as a key player in the immune responses that occur within the central nervous system. In response to inflammation, it will be activated and generate cytokines and chemokines. Experiments in vitro cells have showed that B. Burgdorferi membrane protein A (BmpA), a major immunogen of B...
September 1, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28853313/immunomodulatory-effects-of-heat-killed-mycobacterium-obuense-on-human-blood-dendritic-cells
#6
Samer Bazzi, Helmout Modjtahedi, Satvinder Mudan, Marcel Achkar, Charles Akle, Georges M Bahr
Heat-killed (HK) Mycobacterium obuense is a novel immunomodulator, currently undergoing clinical evaluation as an immunotherapeutic agent in the treatment of cancer. Here, we examined the effect of in vitro exposure to HK M. obuense on the expression of different categories of surface receptors on human blood myeloid (m) and plasmacytoid (p) DCs. Moreover, we have characterized the cytokine and chemokine secretion patterns of purified total blood DCs stimulated with HK M. obuense. HK M. obuense significantly up-regulated the expression of CD11c, CD80, CD83, CD86, CD274 and MHC class II in whole-blood mDCs and CD80, CD123 and MHC class II in whole-blood pDCs...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/28836545/characteristics-of-proinflammatory-cytokines-and-chemokines-in-airways-of-asthmatics-relationships-with-disease-severity-and-infiltration-of-inflammatory-cells
#7
Ting Yang, Yan Li, Zhe Lyu, Kewu Huang, Chris J Corrigan, Sun Ying, Wei Wang, Chen Wang
BACKGROUND: Increased proinflammatory cytokines and chemokines might contribute to infiltration of inflammatory cells and remodeling in airways of asthma. Although these molecules may be associated with asthma, there is lack of systemic evidence showing which and how important these events are in the disease. We aimed to analyze the concentrations of these molecules in the airways and relationships with disease severity and with airway infiltration of inflammatory cells in a large cohort of asthmatics (n = 70, including 37 mild and 33 moderate/severe asthmatics) compared with controls (n = 30)...
September 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28833504/cytotoxic-anti-melanoma-drugs-suppress-the-activation-of-m2-macrophages
#8
Taku Fujimura, Aya Kakizaki, Yumi Kambayashi, Yota Sato, Kayo Tanita, Chunbing Lyu, Sadanori Furudate, Setsuya Aiba
Together with regulatory T cells (Tregs), tumor-associated macrophages (TAMs) play roles in maintaining the tumor microenvironment. Though cytotoxic anti-melanoma drugs such as dacarbazine (DTIC), nimustine hydrochloride (ACNU), and vincristine (VCR) have been used for the treatment of malignant melanoma as adjuvant therapy in Japan, the detailed mechanisms of their immunomodulatory effects are not fully understood. Since the majority of TAMs are alternatively activated M2 macrophages that favor tumor development, the aim of this study was to elucidate the immunomodulatory effects of these reagents on human monocyte-derived M2 macrophages...
August 20, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28821884/the-atopic-dermatitis-blood-signature-is-characterized-by-increases-in-inflammatory-and-cardiovascular-risk-proteins
#9
Patrick M Brunner, Mayte Suárez-Fariñas, Helen He, Kunal Malik, Huei-Chi Wen, Juana Gonzalez, Tom Chih-Chieh Chan, Yeriel Estrada, Xiuzhong Zheng, Saakshi Khattri, Nancy Dattola, James G Krueger, Emma Guttman-Yassky
Beyond classic "allergic"/atopic comorbidities, atopic dermatitis (AD) emerges as systemic disease with increased cardiovascular risk. To better define serum inflammatory and cardiovascular risk proteins, we used an OLINK high-throughput proteomic assay to analyze moderate-to-severe AD (n = 59) compared to psoriasis (n = 22) and healthy controls (n = 18). Compared to controls, 10 proteins were increased in serum of both diseases, including Th1 (IFN-γ, CXCL9, TNF-β) and Th17 (CCL20) markers. 48 proteins each were uniquely upregulated in AD and psoriasis...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810589/phenotypic-switch-in-lung-interstitial-macrophage-polarization-in-an-ovalbumin-induced-mouse-model-of-asthma
#10
Hanxiang Nie, Ailing Wang, Qing He, Qiaoyu Yang, Linlin Liu, Guqin Zhang, Yi Huang, Xuhong Ding, Hongying Yu, Suping Hu
Macrophage phenotype and function varies according to their polarized state, which in turn is dependent on microenvironmental stimuli. Under normal physiological conditions, lung interstitial macrophages that express interleukin (IL)-10 are considered to serve regulatory roles in the prevention of allergic reactions in the airways. However, the phenotypic profile of lung interstitial macrophages during the pathophysiology of asthma remains unknown. In the current study, the phenotypic characteristics of lung interstitial macrophages were investigated in an ovalbumin (OVA)-induced mouse model of asthma...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28736555/%C3%AE-glucan-size-controls-dectin-1-mediated-immune-responses-in-human-dendritic-cells-by-regulating-il-1%C3%AE-production
#11
Matthew J Elder, Steve J Webster, Ronnie Chee, David L Williams, J S Hill Gaston, Jane C Goodall
Dectin-1/CLEC7A is a pattern recognition receptor that recognizes β-1,3 glucans, and its stimulation initiates signaling events characterized by the production of inflammatory cytokines from human dendritic cells (DCs) required for antifungal immunity. β-glucans differ greatly in size, structure, and ability to activate effector immune responses from DC; as such, small particulate β-glucans are thought to be poor activators of innate immunity. We show that β-glucan particle size is a critical factor contributing to the secretion of cytokines from human DC; large β-glucan-stimulated DC generate significantly more IL-1β, IL-6, and IL-23 compared to those stimulated with the smaller β-glucans...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28721202/defining-the-inflammatory-signature-of-human-lung-explant-tissue-in-the-presence-and-absence-of-glucocorticoid
#12
Tracy L Rimington, Emily Hodge, Charlotte K Billington, Sangita Bhaker, Binaya K C, Iain Kilty, Scott Jelinsky, Ian P Hall, Ian Sayers
BACKGROUND:  Airway inflammation is a feature of many respiratory diseases and there is a need for newer, more effective anti-inflammatory compounds. The aim of this study was to develop an ex vivo human lung explant model which can be used to help study the mechanisms underlying inflammatory responses and which can provide a tool to aid drug discovery for inflammatory respiratory diseases such as asthma and COPD. METHOD:  Parenchymal lung tissue from 6 individual donors was dissected and cultured with two pro-inflammatory stimuli, lipopolysaccharide (LPS) (1 µg/ml) and interleukin-1 beta (IL-1β) (10 ng/ml) in the presence or absence of dexamethasone (1 µM)...
2017: F1000Research
https://www.readbyqxmd.com/read/28676458/vitamin-d-deficiency-and-sex-specific-dysregulation-of-placental-inflammation
#13
Nancy Q Liu, Dean P Larner, Qingqiang Yao, Rene F Chun, Yuxin Ouyang, Rui Zhou, Jennifer A Tamblyn, Carol L Wagner, Martin Hewison
To investigate an immunomodulatory role for vitamin D in pregnancy we used mice raised on vitamin D-sufficient (SUFF), or -deficient (DEF) diets. At embryonic day 14, pregnant mice received intraperitoneal injection of lipopolysaccharide (LPS) or vehicle for 24h, with age-matched non-pregnant mice as controls. In non-pregnant mice, 6 serum analytes (IL-1β, IL-18, MDC/CCL22, MIP-1α/CCL3, EGF, IgA) were lower in DEF mice. In pregnant DEF mice only GH was higher. In non-pregnant mice LPS induced 28 analytes, with 5 (IL-18, IP-10/CXCL10, MCP-1/CCL2, MIP-1β/CCL4, MIP-3β/CCL19) being highest in DEF mice...
July 1, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28672408/ginger-extract-modulates-the-expression-of-chemokines-ccl20-and-ccl22-and-their-receptors-ccr6-and-ccr4-in-the-central-nervous-system-of-mice-with-experimental-autoimmune-encephalomyelitis
#14
Abdollah Jafarzadeh, Zahra Arabi, Rayhaneh Ahangar-Parvin, Marziyeh Mohammadi-Kordkhayli, Maryam Nemati
Background Chemokines facilitate the leukocytes infiltration into the central nervous system (CNS) which is an essential step in the pathogenesis of multiple sclerosis. Ginger has also a broad anti-inflammatory properties. The aim was to evaluate the effects of ginger extract on the expression of CCL20 and CCL22 and their receptors (CCR6 and CCR4, respectively) in experimental autoimmune encephalomyelitis (EAE). Material and Methods Female C57BL/6 mice used for EAE induction by immunization with myelin oligodendroglial glycoprotein...
July 3, 2017: Drug Research
https://www.readbyqxmd.com/read/28668835/immunomodulatory-effect-of-imiquimod-through-ccl22-produced-by-tumor-associated-macrophages-in-b16f10-melanomas
#15
Sadanori Furudate, Taku Fujimura, Yumi Kambayashi, Aya Kakizaki, Takanori Hidaka, Setsuya Aiba
BACKGROUND/AIM: Tumor-associated macrophages (TAMs), together with splenic CD11b(+) cells, help maintain the tumor microenvironment. The immunomodulatory compound imiquimod (IQM) stimulates innate immune cells, including macrophages, to induce antitumor effects. In order to elucidate the effects of IQM on the tumor microenvironment, we investigated the immunomodulatory effect of IQM during melanoma growth by using the B16F10 melanoma model. MATERIALS AND METHODS: To elucidate the immunomodulatory effects of IQM on the tumor microenvironment, we isolated CD11b(+) TAMs and splenic CD11b(+) cells and evaluated the immunomodulatory effects of IQM, using the B16F10 melanoma model...
July 2017: Anticancer Research
https://www.readbyqxmd.com/read/28650254/proteomics-to-predict-the-response-to-tumour-necrosis-factor-%C3%AE-inhibitors-in-rheumatoid-arthritis-using-a-supervised-cluster-analysis-based-protein-score
#16
Bvj Cuppen, Rde Fritsch-Stork, I Eekhout, W de Jager, A C Marijnissen, Jwj Bijlsma, M Custers, J M van Laar, Fpjg Lafeber, Pmj Welsing
OBJECTIVE: In rheumatoid arthritis (RA), it is of major importance to identify non-responders to tumour necrosis factor-α inhibitors (TNFi) before starting treatment, to prevent a delay in effective treatment. We developed a protein score for the response to TNFi treatment in RA and investigated its predictive value. METHOD: In RA patients eligible for biological treatment included in the BiOCURA registry, 53 inflammatory proteins were measured using xMAP® technology...
June 26, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28648867/an-initial-investigation-into-endothelial-cc-chemokine-expression-in-the-human-rheumatoid-synovium
#17
Lisa Rump, Derek L Mattey, Oksana Kehoe, Jim Middleton
Rheumatoid arthritis (RA) is a destructive and chronic autoimmune inflammatory disease. Synovial inflammation is a major feature of RA and is associated with leukocyte recruitment. Leukocytes cross the endothelial cells (ECs) into the synovial tissue and fluid and this migration is mediated via a range of chemokines and adhesion molecules on the ECs. As important mediators of leukocyte extravasation, a number of chemokines from each of the chemokine families have been established as expressed in the RA joint...
September 2017: Cytokine
https://www.readbyqxmd.com/read/28637178/the-at04a-vaccine-against-proprotein-convertase-subtilisin-kexin-type-9-reduces-total-cholesterol-vascular-inflammation-and-atherosclerosis-in-apoe-3leiden-cetp-mice
#18
Christine Landlinger, Marianne G Pouwer, Claudia Juno, José W A van der Hoorn, Elsbet J Pieterman, J Wouter Jukema, Guenther Staffler, Hans M G Princen, Gergana Galabova
Aims: Proprotein convertase subtilisin/kexin type 9 (PCSK9) has emerged as a promising therapeutic target for the treatment of hypercholesterolaemia and atherosclerosis. PCSK9 binds to the low density lipoprotein receptor and enhances its degradation, which leads to the reduced clearance of low density lipoprotein cholesterol (LDLc) and a higher risk of atherosclerosis. In this study, the AT04A anti-PCSK9 vaccine was evaluated for its therapeutic potential in ameliorating or even preventing coronary heart disease in the atherogenic APOE*3Leiden...
August 21, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28600970/thp-1-and-human-peripheral-blood-mononuclear-cell-derived-macrophages-differ-in-their-capacity-to-polarize-in-vitro
#19
Hiromi Shiratori, Carmen Feinweber, Sonja Luckhardt, Bona Linke, Eduard Resch, Gerd Geisslinger, Andreas Weigert, Michael J Parnham
Macrophages (Mφ) undergo activation to pro-inflammatory (M1) or anti-inflammatory (M2) phenotypes in response to pathophysiologic stimuli and dysregulation of the M1-M2 balance is often associated with diseases. Therefore, studying mechanisms of macrophage polarization may reveal new drug targets. Human Mφ polarization is generally studied in primary monocyte-derived Mφ (PBMC Mφ) and THP-1-derived Mφ (THP-1 Mφ). We compared the polarization profile of THP-1 Mφ with that of PBMC Mφ to assess the alternative use of THP-1 for polarization studies...
August 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28594935/a-nested-case-control-study-of-277-prediagnostic-serum-cytokines-and-glioma
#20
Judith Schwartzbaum, Min Wang, Elisabeth Root, Maciej Pietrzak, Grzegorz A Rempala, Ruo-Pan Huang, Tom Borge Johannesen, Tom K Grimsrud
Recent research shows bidirectional communication between the normal brain and the peripheral immune system. Glioma is a primary brain tumor characterized by systemic immunosuppression. To better understand gliomagenesis, we evaluated associations between 277 prediagnostic serum cytokines and glioma. We used glioma (n = 487) and matched control (n = 487) specimens from the Janus Serum Bank Cohort in Oslo, Norway. Conditional logistic regression allowed us to identify those cytokines that were individually associated with glioma...
2017: PloS One
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