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https://www.readbyqxmd.com/read/28442213/pathogenic-cd4-t-cells-in-patients-with-asthma
#1
REVIEW
Lyndsey M Muehling, Monica G Lawrence, Judith A Woodfolk
Asthma encompasses a variety of clinical phenotypes that involve distinct T cell-driven inflammatory processes. Improved understanding of human T-cell biology and the influence of innate cytokines on T-cell responses at the epithelial barrier has led to new asthma paradigms. This review captures recent knowledge on pathogenic CD4(+) T cells in asthmatic patients by drawing on observations in mouse models and human disease. In patients with allergic asthma, TH2 cells promote IgE-mediated sensitization, airway hyperreactivity, and eosinophilia...
April 22, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28434701/upregulated-interleukins-il-6-il-10-and-il-13-in-immunoglobulin-g4-related-aortic-aneurysm-patients
#2
Satomi Kasashima, Atsuhiro Kawashima, Yoh Zen, Satoru Ozaki, Fuminori Kasashima, Masamitsu Endo, Yasushi Matsumoto, Kengo Kawakami
OBJECTIVE: Immunoglobulin (Ig) G4-related aortic aneurysms (IgG4-AAs) are a special aortic aneurysm among IgG4-related diseases (IgG4-RDs), which are inflammatory and fibrous conditions characterized by tumorous swelling of affected organs and high serum IgG4 concentrations. Recently, IgG4-RD pathogenesis was shown to be associated with T-helper-2 (Th2) and regulatory T (Treg) dominant cytokine production, such as interleukin (IL)-4, IL-10, and IL-13. IL-6 is a key proinflammatory cytokine contributing to lymphocyte and plasmacyte maturation and to atherosclerosis and aneurysm development...
April 20, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28426171/sputum-basophils-are-increased-in-eosinophilic-asthma-compared-with-non-eosinophilic-asthma-phenotypes
#3
Collin R Brooks, Christine J van Dalen, Ian F Hermans, Peter G Gibson, Jodie L Simpson, Jeroen Douwes
Sputum basophil numbers are increased in allergic asthmatics, but it is unclear what role airway basophils play in "TH2-low" asthma phenotypes. Using flow cytometry we found that basophils were significantly increased in all asthmatics (n=26) compared with healthy controls (n=8) (p=0.007) with highest levels observed in eosinophilic asthma (EA; median 0.22%, IQR 0.11-0.47%; n=14) compared with non-EA (0.06%, 0.00-0.20%; n=12; p<0.05). In asthmatics, basophils were positively correlated with sputum eosinophils (r=0...
April 20, 2017: Allergy
https://www.readbyqxmd.com/read/28424692/t-cells-in-osteoarthritis-alterations-and-beyond
#4
REVIEW
Yu-Sheng Li, Wei Luo, Shou-An Zhu, Guang-Hua Lei
Although osteoarthritis (OA) has been traditionally regarded as a non-inflammatory disease, reports increasingly suggest that it is inflammatory, at least in certain patients. OA patients often exhibit inflammatory infiltration of synovial membranes by macrophages, T cells, mast cells, B cells, plasma cells, natural killer cells, dendritic cells, granulocytes, etc. Although previous reviews have summarized the knowledge of inflammation in the pathogenesis of OA, as far as we know, no report review our current understanding about T cells, especially, each T cell subtype, in the biology of OA...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28423056/hair-and-stress-a-pilot-study-of-hair-and-cytokine-balance-alteration-in-healthy-young-women-under-major-exam-stress
#5
Eva M J Peters, Yvonne Müller, Wenke Snaga, Herbert Fliege, Anett Reißhauer, Thomas Schmidt-Rose, Heiner Max, Dorothea Schweiger, Matthias Rose, Johannes Kruse
Mouse models show that experimental stress mimicking prolonged life-stress exposure enhances neurogenic inflammation, induces adaptive immunity cytokine-imbalance characterized by a shift to Type 1 T-helper cell cytokines and increases apoptosis of epithelial cells. This affects hair growth in otherwise healthy animals. In this study, we investigate whether a prolonged naturalistic life-stress exposure affects cytokine balance and hair parameters in healthy humans. 33 (18 exam, 15 comparison) female medical students with comparable sociobiological status were analyzed during a stressful final examination period, at three points in time (T) 12 weeks apart...
2017: PloS One
https://www.readbyqxmd.com/read/28397056/dynamic-changes-of-phenotypes-and-secretory-functions-during-the-differentiation-of-pre-dcs-to-mature-dcs
#6
Jing Wang, Li-Bo Zhao, Sheng Chang, Chang-Sheng Ming, Jun Yang, Nian-Qiao Gong
The dynamic expression of cytokines and phenotypes during the differentiation process of dendritic cell precursors (pre-DCs) to mature dendritic cells (DCs) was investigated, and the effects of inflammatory stimulation with lipopolysaccharide (LPS) on DCs differentiation were understood. The differentiation of bone marrow cells isolated from Balb/c mice was induced to DCs in an 8-day cell culture system with RPMI-1640 complete culture medium containing 10% FBS, 20 ng/mL recombinant mouse granulocyte-macrophage colony-stimulating factor (rmGM-CSF) and 10 ng/mL recombinant mouse interleukin-4 (rmIL-4)...
April 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28393295/elevated-galectin-9-suppresses-th1-effector-function-and-induces-apoptosis-of-activated-cd4-t-cells-in-osteoarthritis
#7
Shufeng Yang, Jin Wang, Fengrong Chen, Guoyin Liu, Zhiqiang Weng, Jianmin Chen
T cell immunoglobulin and mucin domain 3 (Tim-3) is a critical regulatory molecule found on activated Th1 cells, exhausted CD8(+) T cells, and resting monocytes/macrophages. Galectin-9 (Gal-9) is an identified ligand for Tim-3. Interaction between Tim-3 and Gal-9 is thought to inhibit Th1 responses. The regulation and function of Tim-3 and Gal-9 in osteoarthritis (OA) have not been intensively investigated. We found that in peripheral blood, CD4(+) T cells, but not CD8(+) T cells or CD14(+) monocytes, from OA patients presented significantly elevated Tim-3 and Gal-9 expression compared to those from healthy controls (HC)...
April 10, 2017: Inflammation
https://www.readbyqxmd.com/read/28370210/the-effect-of-three-monthly-albendazole-treatment-on-th2-responses-differential-effects-on-ige-and-il-5
#8
Karin de Ruiter, Dicky L Tahapary, Linda Wammes, Aprilianto E Wiria, Firdaus Hamid, Lisette van Lieshout, Johannes W A Smit, Jeanine J Houwing-Duistermaat, Erliyani Sartono, Taniawati Supali, Maria Yazdanbakhsh
Helminth parasites induce a strong Th2 response, characterized by high levels of IgE and elevated signature cytokines such as IL-5. As many global deworming programs are underway, there is concern that this might lead to emergence of Th1-mediated pathologies when the counterbalancing helminth-induced Th2 response is absent. Therefore, we assessed the effect of deworming on Th2 mediated responses in a household-clustered randomised controlled trial in Indonesia. Total plasma IgE and whole-blood IL-5 responses to mitogen phytohaemagglutinin (PHA) were measured in 1494 and 682 subjects respectively, at baseline, 9 and 21 months after three-monthly single dose treatment with albendazole or placebo...
March 31, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28362822/fasciola-hepatica-reinfection-potentiates-a-mixed-th1-th2-th17-treg-response-and-correlates-with-the-clinical-phenotypes-of-anemia
#9
M Adela Valero, Ignacio Perez-Crespo, Carlos Chillón-Marinas, Messaoud Khoubbane, Carla Quesada, Marta Reguera-Gomez, Santiago Mas-Coma, Manuel Fresno, Núria Gironès
BACKGROUND: Fascioliasis is a severe zoonotic disease of worldwide extension caused by liver flukes. In human fascioliasis hyperendemic areas, reinfection and chronicity are the norm and anemia is the main sign. Herein, the profile of the Th1/Th2/Th17/Treg expression levels is analyzed after reinfection, correlating them with their corresponding hematological biomarkers of morbidity. METHODOLOGY/PRINCIPAL FINDINGS: The experimental design reproduces the usual reinfection/chronicity conditions in human fascioliasis endemic areas and included Fasciola hepatica primo-infected Wistar rats (PI) and rats reinfected at 8 weeks (R8), and at 12 weeks (R12), and negative control rats...
2017: PloS One
https://www.readbyqxmd.com/read/28347733/neonatal-bcg-vaccination-has-no-effect-on-recurrent-wheeze-in-the-first-year-of-life-a%C3%A2-randomized-clinical-trial
#10
Lisbeth Marianne Thøstesen, Lone Graff Stensballe, Gitte Thybo Pihl, Jesper Kjærgaard, Nina Marie Birk, Thomas Nørrelykke Nissen, Aksel Karl Georg Jensen, Peter Aaby, Annette Wind Olesen, Dorthe Lisbeth Jeppesen, Christine Stabell Benn, Poul-Erik Kofoed
BACKGROUND: Recurrent wheeze (RW) is frequent in childhood. Studies have suggested that BCG vaccination can have nonspecific effects, reducing general nontuberculosis morbidity, including respiratory tract infections and atopic diseases. The mechanisms behind these nonspecific effects of BCG are not fully understood, but a shift from a TH2 to a TH1 response has been suggested as a possible explanation. OBJECTIVE: We hypothesized that BCG at birth would reduce the cumulative incidence of RW during the first year of life...
March 25, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28338920/dendritic-cell-expression-of-the-signaling-molecule-traf6-is-required-for-immune-tolerance-in-the-lung
#11
Daehee Han, Matthew C Walsh, Kwang Soon Kim, Sung-Wook Hong, Junyoung Lee, Jaeu Yi, Gloriany Rivas, Yongwon Choi, Charles D Surh
Immune tolerance in the lung is important for preventing hypersensitivity, such as allergic asthma. Maintenance of tolerance in the lung is established by coordinated activities of poorly understood cellular and molecular mechanisms, including participation of dendritic cells (DCs). We have previously identified DC expression of the signaling molecule TRAF6 as a non-redundant requirement for the maintenance of immune tolerance in the small intestine of mice. Because mucosal tissues share similarities in how they interact with exogenous antigens, we examined the role of DC-expressed TRAF6 in the lung...
February 1, 2017: International Immunology
https://www.readbyqxmd.com/read/28276625/nkg2d-ligand-rae1%C3%AE%C2%B5-induces-generation-and-enhances-the-inhibitor-function-of-myeloid-derived-suppressor-cells-in-mice
#12
Li Qian, Yang Liu, Shaoqing Wang, Weijuan Gong, Xiaoqin Jia, Lu Liu, Feng Ye, Jingjuan Ding, Yuwei Xu, Yi Fu, Fang Tian
Expression of surface NKG2D ligands on tumour cells, which activates nature killer (NK) cells and CD8(+) T cells, is crucial in antitumour immunity. Some types of tumours have evolved mechanisms to suppress NKG2D-mediated immune cell activation, such as tumour-derived soluble NKG2D ligands or sustained NKG2D ligands produced by tumours down-regulate the expression of NKG2D on NK cells and CD8(+) T cells. Here, we report that surface NKG2D ligand RAE1ε on tumour cells induces CD11b(+) Gr-1(+) myeloid-derived suppressor cell (MDSC) via NKG2D in vitro and in vivo...
March 9, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28267643/alum-adjuvanted-rabies-dna-vaccine-confers-80-protection-against-lethal-50-ld50-rabies-challenge-virus-standard-strain
#13
Rajni Garg, Manpreet Kaur, Ankur Saxena, Rajendra Prasad, Rakesh Bhatnagar
Rabies is a serious concern world-wide. Despite availability of rabies vaccines for long; their efficacy, safety, availability and cost effectiveness has been a tremendous issue. This calls for improvement of rabies vaccination strategies. DNA vaccination has immense potential in this regard. The DNA vaccine pgp.LAMP-1 conferred 60% protection to BALB/c mice against 20 LD50 rabies challenge virus standard (CVS) strain challenge. Upon supplementation with Emulsigen-D, the vaccine formulation conferred complete protection against lethal challenge...
March 3, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28263381/obesity-promotes-prolonged-ovalbumin-induced-airway-inflammation-modulating-t-helper-type-1-th1-th2-and-th17-immune-responses-in-balb-c-mice
#14
F M C Silva, E E Oliveira, A C C Gouveia, A S S Brugiolo, C C Alves, J O A Correa, J Gameiro, J Mattes, H C Teixeira, A P Ferreira
Clinical and epidemiological studies indicate that obesity affects the development and phenotype of asthma by inducing inflammatory mechanisms in addition to eosinophilic inflammation. The aim of this study was to assess the effect of obesity on allergic airway inflammation and T helper type 2 (Th2) immune responses using an experimental model of asthma in BALB/c mice. Mice fed a high-fat diet (HFD) for 10 weeks were sensitized and challenged with ovalbumin (OVA), and analyses were performed at 24 and 48 h after the last OVA challenge...
March 6, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28245601/distinct-antigen-delivery-systems-induce-dendritic-cells-divergent-transcriptional-response-new-insights-from-a-comparative-and-reproducible-computational-analysis
#15
Valerio Costa, Dario Righelli, Francesco Russo, Piergiuseppe De Berardinis, Claudia Angelini, Luciana D'Apice
Vaccination is the most successful and cost-effective method to prevent infectious diseases. However, many vaccine antigens have poor in vivo immunogenic potential and need adjuvants to enhance immune response. The application of systems biology to immunity and vaccinology has yielded crucial insights about how vaccines and adjuvants work. We have previously characterized two safe and powerful delivery systems derived from non-pathogenic prokaryotic organisms: E2 and fd filamentous bacteriophage systems. They elicit an in vivo immune response inducing CD8+ T-cell responses, even in absence of adjuvants or stimuli for dendritic cells' maturation...
February 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28245275/the-effect-of-size-segregated-ambient-particulate-matter-on-th1-th2-like-immune-responses-in-mice
#16
Kuo-Liang Huang, Szu-Yuan Liu, Charles C K Chou, Yi-Hsin Lee, Tsun-Jen Cheng
BACKGROUND: Particulate matter (PM) has been associated with increased pulmonary and cardiovascular mortality and morbidity. Additionally, PM is known to exacerbate asthma. However, whether ambient PM exposure contributes to the onset of asthma, especially in non-atopic children and adults, is less conclusive. The current study aimed to evaluate the effects of size-fractioned PM on lung immune responses in healthy BALB/c mice. METHODS AND PRINCIPAL FINDINGS: We collected PM10, PM2...
2017: PloS One
https://www.readbyqxmd.com/read/28243231/il-10-producing-cd1d-hi-cd5-regulatory-b-cells-may-play-a-critical-role-in-modulating-immune-homeostasis-in-silicosis-patients
#17
Ying Chen, Chao Li, Yiping Lu, Huiying Zhuang, Weijia Gu, Bo Liu, Fangwei Liu, Jinkai Sun, Bo Yan, Dong Weng, Jie Chen
Silicosis is characterized by chronic lung inflammation and fibrosis, which are extremely harmful to human health. The pathogenesis of silicosis involves uncontrolled immune processes. Evidence supports that regulatory B cells (Bregs) produce negative regulatory cytokines, such as IL-10, which can negatively regulate immune responses in inflammation and autoimmune diseases. Our previous study found that IL-10-producing B cells were involved in the development of silica-induced lung inflammation and fibrosis of mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28241799/immunogenicity-and-therapeutic-effects-of-a-mycobacterium-tuberculosis-rv2190c-dna-vaccine-in-mice
#18
Yan Liang, Xiaoyan Zhang, Xuejuan Bai, Li Xiao, Xiaomei Wang, Junxian Zhang, Yourong Yang, Jinying Song, Lan Wang, Xueqiong Wu
BACKGROUND: Tuberculosis (TB) is a major global public health problem. New treatment methods on TB are urgently demanded. In this study, Mycobacterium tuberculosis (MTB) rv2190c DNA vaccine was prepared and its immunogenicity and therapeutic effects were evaluated. RESULTS: Non-infected mice immunized with rv2190c DNA or ag85a DNA showed higher levels of interferon-gamma (IFN-γ) in stimulated spleen lymphocyte culture supernatants, and had more Th1 cells and an elevatory ratio of Th1/Th2 immune cells in whole blood, indicating that Th1-type immune response was predominant...
February 27, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28237910/immune-markers-of-social-cognitive-bias-in-schizophrenia
#19
Patrick W Dunne, David L Roberts, Marlon P Quinones, Dawn I Velligan, Madelaine Paredes, Consuelo Walss-Bass
Social cognition is impaired in schizophrenia, is relatively independent of purely neurocognitive domains such as attention and executive functioning, and may be the strongest predictor of functional outcome in this disease. Within a motivated reasoning framework, we tested the hypothesis that the anti-inflammatory Th2-associated cytokines, IL-10 and MDC, would be correlated with behavioral measures of social cognitive threat-detection bias (self-referential gaze detection bias and theory of mind (ToM) bias) in delusional versus non-delusional patients...
May 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28220116/cpg-odn-shapes-alum-adjuvant-activity-signaling-via-myd88-and-il-10
#20
Luciana Mirotti, Ricardo Wesley Alberca Custódio, Eliane Gomes, Florencia Rammauro, Eliseu Frank de Araujo, Vera Lucia Garcia Calich, Momtchilo Russo
Aluminum-containing adjuvants usually referred as Alum are considered as T helper type-2 (Th2) adjuvants, while agonists of toll-like receptors (TLRs) are viewed as adjuvants that favor Th1/Th17 immunity. Alum has been used in numerous vaccine formulations; however, its undesired pro-Th2 adjuvant activity constitutes a caveat for Alum-based vaccines. Combining Alum with TLR-dependent, pro-Th1/Th17 adjuvants might dampen the pro-Th2 activity and improve the effectiveness of vaccine formulations. Here, using the ovalbumin (OVA) model of allergic lung inflammation, we found that sensitization with the synthetic TLR9 agonist, which is composed of oligodeoxynucleotides containing CpG motifs adsorbed to Alum, inhibited the development of OVA-induced lung allergic Th2 responses without shifting toward a Th1 pattern...
2017: Frontiers in Immunology
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