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https://www.readbyqxmd.com/read/28652606/interleukin-33-exacerbates-antigen-driven-airway-hyperresponsiveness-inflammation-and-remodeling-in-a-mouse-model-of-asthma
#1
L C Sjöberg, A Zoltowska Nilsson, Y Lei, J A Gregory, M Adner, G P Nilsson
Interleukin 33 (IL-33) represents a potential link between the airway epithelium and induction of Th2-type inflammatory responses associated with the development of asthma. This study investigated the potential of IL-33 to exacerbate antigen driven asthma responses. An ovalbumin (OVA) asthma model was used in which sensitized C57BL/6 mice were exposed to IL-33 before each OVA challenge. IL-33 given to sensitized mice acted synergistically with antigen and aggravated airway inflammation, hyperresponsiveness and remodeling compared with mice that were only OVA sensitized and challenged and mice that were only exposed to IL-33...
June 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28652007/cytokines-affecting-cd4-t-regulatory-cells-in-transplant-tolerance-iii-interleukin-5-il-5-promotes-survival-of-alloantigen-specific-cd4-t-regulatory-cells
#2
Bruce M Hall, Karren M Plain, Giang T Tran, Nirupama D Verma, Catherine M Robinson, Masaru Nomura, Rochelle Boyd, Suzanne J Hodgkinson
CD4(+)T cells mediate antigen-specific allograft tolerance, but die in culture without activated lymphocyte derived cytokines. Supplementation of the media with cytokine rich supernatant, from ConA activated spleen cells, preserves the capacity of tolerant cells to transfer tolerance and suppress rejection. rIL-2 or rIL-4 alone are insufficient to maintain these cells, however. We observed that activation of naïve CD4(+)CD25(+)FOXP3(+)Treg with alloantigen and the Th2 cytokine rIL-4 induces them to express interleukin-5 specific receptor alpha (IL-5Rα) suggesting that IL-5, a Th2 cytokine that is produced later in the immune response may promote tolerance mediating Treg...
June 23, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28651915/novel-analogs-of-n-acylhydroxyethylaminomethyl-4h-chromen-4-one-scaffold-as-il-5-inhibitors
#3
Hyun-Sun Yang, Eeda Venkateswararao, Pulla Reddy Boggu, Vinay K Sharma, Youngsoo Kim, Sang-Hun Jung
A number of N-acyl substituted hydroxyethylaminomethyl-4H-chromen-4-ones 6a-u were prepared and evaluated for their IL-5 inhibitory activity. Among them, the compound 6r (95.0% inhibition at 30µM, IC50=10.0µM, ClogP=4.1549) showed most potent inhibitory activity. The structure activity relationship revealed that the bulkier or hydrophobic substituents at urea, carbamate or amide group resulted in good inhibitory activity against IL-5. Moreover, electron donating group at phenyl ring (6g and 6s) is much more active than electron withdrawing group (6f)...
June 15, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28649241/insulin-modulates-cytokine-release-collagen-and-mucus-secretion-in-lung-remodeling-of-allergic-diabetic-mice
#4
Sabrina S Ferreira, Fernanda P B Nunes, Felipe B Casagrande, Joilson O Martins
INTRODUCTION: The role of insulin in lung remodeling in a model of asthma in healthy and diabetic mice was evaluated. MATERIAL AND METHODS: Diabetic male BALB/c mice (alloxan, 50 mg/kg, intravenous) and controls were sensitized by subcutaneous (s.c.) injection of ovalbumin (OA, 20 µg) in aluminum hydroxide (Al(OH)3, 2 mg) 10 days after the alloxan injection and received the same dose 12 days later. Six days after the last sensitization, animals were nebulized with OA solution for 7 days...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28648630/resolution-of-a-steroid-resistant-hypereosinophilic-immune-diathesis-with-mepolizumab-and-concomitant-amelioration-of-a-mixed-thrombotic-microangiopathy
#5
J Justin Mulvey, Cynthia Magro, Amy Chadburn
The anaphylatoxins produced by an unbridled complement cascade in atypical hemolytic uremic syndrome (aHUS) can alter the leukocyte environment in tissues and peripheral blood, causing clinically significant eosinophilia. While the membrane attack complex and C5a anaphlatoxin can be suppressed with anti-C5 biologics, the production of C3a is still capable of driving a destructive hypereosinophilic syndrome in spite of anticomplement therapy. The side-effects of glucocorticoids in treating hypereosinophilic syndrome limit their therapeutic index in long-term treatment and this behooves the use of alternative strategies...
May 2, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28648015/-therapeutic-effects-of-tubastatin-a-hcl-on-airway-inflammation-in-acute-mice-asthma-model
#6
X M Su, Y Ren, M L Li, X Zhao, J Kang
Objective: To investigated the therapeutic effects of Tubastatin A Hcl, a selective HDAC6 inhibitor, on airway inflammation in acute mice bronchial asthma (asthma) model. Methods: A total of 48 BALB/C mice were randomly divided into control group, asthma group, dexamethasone group and Tubastatin A Hcl group with 12 mice in each group. Then the airway hyperresponsiveness was assessed in each group; total cell number, different cell number, levels of Interleukin (IL)-4, IL-5 and Interferon-γ (IFN-γ) in the bronchoalveolar lavage fluid (BALF) were detected; the lung tissues of each group were stained with HE to observe the inflammatory cells infiltration...
June 27, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28646903/human-adipose-tissue-mesenchymal-stromal-cells-and-their-extracellular-vesicles-act-differentially-on-lung-mechanics-and-inflammation-in-experimental-allergic-asthma
#7
Ligia Lins de Castro, Debora Gonçalves Xisto, Jamil Zola Kitoko, Fernanda Ferreira Cruz, Priscilla Christina Olsen, Patricia Albuquerque Garcia Redondo, Tatiana Paula Teixeira Ferreira, Daniel Jay Weiss, Marco Aurélio Martins, Marcelo Marcos Morales, Patricia Rieken Macedo Rocco
BACKGROUND: Asthma is a chronic inflammatory disease that can be difficult to treat due to its complex pathophysiology. Most current drugs focus on controlling the inflammatory process, but are unable to revert the changes of tissue remodeling. Human mesenchymal stromal cells (MSCs) are effective at reducing inflammation and tissue remodeling; nevertheless, no study has evaluated the therapeutic effects of extracellular vesicles (EVs) obtained from human adipose tissue-derived MSCs (AD-MSC) on established airway remodeling in experimental allergic asthma...
June 24, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28632956/anti-inflammatory-potential-of-a-heat-killed-lactobacillus-strain-isolated-from-kimchi-on-house-dust-mite-induced-atopic-dermatitis-in-nc-nga-mice
#8
C Y Choi, Y H Kim, S Oh, H J Lee, J H Kim, S H Park, H J Kim, S J Lee, T Chun
AIMS: Atopic dermatitis (AD) is an allergic skin disease driven by the Th2-prone immune response. Therefore, a fundamental approach to restoring the Th1/Th2 balance is needed to treat AD. METHODS AND RESULTS: Eighteen different Lactobacillus strains isolated from Kimchi were screened to identify those that stimulated immune cells to secret Th1-type or Th2-type cytokines. Lactobacillus brevis NS1401 induced the greatest IFN-γ and IL-12 secretion and the least IL-4 production among the tested Lactobacillus strains...
June 20, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28628884/proteomics-profiling-reveals-inflammatory-biomarkers-of-antidepressant-treatment-response-findings-from-the-co-med-trial
#9
Bharathi S Gadad, Manish K Jha, Bruce D Grannemann, Taryn L Mayes, Madhukar H Trivedi
Animal and human studies suggest an association between depression and aberrant immune response. Further, common inflammatory markers may change during the course of antidepressant treatment in patients. The objective of this study was to evaluate changes in inflammatory markers and clinical outcomes from subjects enrolled in the Combining Medications to Enhance Depression Outcome (CO-MED) trial. At baseline and week 12 (treatment completion), plasma samples of 102 participants were analyzed via a multiplex assay comprised of inflammatory markers using a 27-plex standard assay panel plus a 4-plex human acute phase xMAP technology based platform...
May 26, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28628664/effects-of-diesel-exhaust-particle-exposure-on-a-murine-model-of-asthma-due-to-soybean
#10
Daniel Alvarez-Simón, Xavier Muñoz, Susana Gómez-Ollés, Miquel de Homdedeu, María-Dolores Untoria, María-Jesús Cruz
BACKGROUND: Exposure to soybean allergens has been linked to asthma outbreaks. Exposure to diesel exhaust particles (DEP) has been associated with an increase in the risk of asthma and asthma exacerbation; however, in both cases the underlying mechanisms remain poorly understood, as does the possible interaction between the two entities. OBJECTIVE: To investigate how the combination of soybean allergens and DEP can affect the induction or exacerbation of asthma in a murine model...
2017: PloS One
https://www.readbyqxmd.com/read/28628633/pro-inflammatory-immune-responses-are-associated-with-clinical-signs-and-symptoms-of-human-anaplasmosis
#11
Anna M Schotthoefer, Steven J Schrodi, Jennifer K Meece, Thomas R Fritsche, Sanjay K Shukla
Human anaplasmosis (HA) is an emerging tick-borne disease that may present as a mild flu-like illness or a life threatening, sepsis-like condition. Although disease severity is hypothesized to relate to immunopathology and immune dysfunction in humans, studies to directly measure immune responses in infected humans have been very limited. We quantified cytokines in 80 confirmed HA patients using a multiplex chemiluminescence immunoassay system and compared similarly measured responses in 1000 control subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28627972/immunomodulatory-effects-of-cigarette-smoke-condensate-in-mouse-macrophage-cell-line
#12
Junwei Zhao, Xiang Li, Fuwei Xie, Zhihua Yang, Xiujie Pan, Maoxiang Zhu, Pingping Shang, Cong Nie, Huimin Liu, Jianping Xie
Increasing evidence has demonstrated that the secretion of cytokines may be associated with cigarette smoke-induced immunomodulatory effects, but a comprehensive analysis of the cytokine profile for cigarette smoke condensate (CSC) exposure is lacking. The aims of this study were to (1) examine the release of 20 cytokines induced by CSC from 12 brands of cigarettes in macrophages cells (Ana-1) and (2) to investigate the general characteristics of the immunomodulatory effects of CSC. Luminex technology was used to simultaneously determine the levels of 20 cytokines (interleukin (IL)-1α, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-10, IL-12, IL-13, IL-17, granulocyte-macrophage colony-stimulating factor (GM-CSF), interferon-γ (IFN-γ), keratinocyte-derived Chemokine (KC), monocyte chemoattractant protein 1 (MCP-1), macrophage inflammatory protein 1α (MIP-1α), induced protein 10 (IP-10), tumor necrosis factor α (TNF-α), vascular endothelial growth factor (VEGF), monkine inducible by γ interferon (MIG), and fibroblast growth factor (FGF)-basic) in the supernatants from Ana-1 cells treated with the CSC...
June 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28624362/pulvis-fellis-suis-extract-attenuates-ovalbumin-induced-airway-inflammation-in-murine-model-of-asthma
#13
Jiao He, Le Lv, Ziye Wang, Chuanchuan Huo, Zongwei Zheng, Bing Yin, Peizhi Jiang, Yang Yang, Jing Li, Yuan Gao, Jing Xue
ETHNOPHARMACOLOGICAL RELEVANCE: Pulvis Fellis Suis (PFS), named with "Zhu Danfen" in China, has been extensively used for the therapy of enteritis, acute pharyngitis, whooping cough and asthma in folk medicine. Although PFS shows anti-inflammatory activities, its effect on airway inflammation in asthma has not been studied. AIM OF THE STUDY: To explore the protective effect of PFS ethanol extract against airway inflammation in asthmatic mice. MATERIALS AND METHODS: Allergic asthma in mice was sensitized and challenged by OVA...
June 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28622052/biologic-treatment-eligibility-for-real-world-patients-with-severe-asthma-the-ideal-study
#14
Frank C Albers, Hana Müllerová, Necdet B Gunsoy, Ji-Yeon Shin, Linda M Nelsen, Eric S Bradford, Sarah M Cockle, Robert Y Suruki
OBJECTIVES: Severe asthma comprises several distinct phenotypes. Consequently, patients with severe asthma can be eligible for more than one biologic treatment targeting Th2 inflammation, such as anti-interleukin (IL)-5 and anti-immunoglobulin (Ig) E. The objective of this study was to describe treatment eligibility and overlap in treatment eligibility for mepolizumab (anti-IL-5), omalizumab (anti-IgE) and reslizumab (anti-IL-5) in patients with severe asthma, who were recruited from clinical practice...
June 16, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28620954/propentofylline-phosphodiesterase-and-adenosine-reuptake-inhibitor-modulates-lymphocyte-subsets-and-lymphocyte-activity-after-in-vivo-administration-in-non-immunized-and-srbc-immunized-mice
#15
Marianna Szczypka, Magdalena Lis, Agnieszka Suszko-Pawłowska, Aleksandra Pawlak, Angelika Sysak, Bożena Obmińska-Mrukowicz
OBJECTIVES: The aim of the study was to investigate immunomodulatory effect of in-vivo administered propentofylline on the subsets and activity of murine lymphocytes. METHODS: Propentofylline (3 mg/kg) was administered orally to 8-week-old Balb/c mice, once or six times at 12-h intervals. The lymphocyte subsets, regulatory T cells, IL-5 and TNF levels were determined 12 h and 24 h after a single dose or after the sixth dose of the drug in non-immunized mice. Humoral immune response in sheep red blood cells (SRBC)-immunized mice was determined 4, 7 and 14 days after immunization...
June 16, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28619762/impaired-tnf-tnfr2-signaling-enhances-th2-and-th17-polarization-and-aggravates-allergic-airway-inflammation
#16
Xiao-Ming Li, Xi Chen, Wen Gu, Yi-Jia Guo, Yi Cheng, Juan Peng, Xue-Jun Guo
CD4+T cell differentiation plays an important role in allergic airway diseases. Tumor necrosis factor receptor 2 (TNFR2) has been shown to regulate CD4+T lymphocyte differentiation, but its role in allergic airway inflammation is not clear. Here we investigated the role of TNFR2 in allergic airway inflammation. Mouse model was generated by immunization with OVA and intranasal administration of TNFR2 antibody. Airway inflammation and CD4+T cell differentiation were measured in vivo and in vitro. Inhibited TNFR2 signaling aggravated airway inflammation and increased the expression of inflammatory cytokines (IL-4, IL-5, IL-17, and TNF-α) in serum and bronchoalveolar lavage fluid (BALF)...
June 15, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28618071/histamine-receptor-2-modifies-inkt-cell-activity-within-the-inflamed-lung
#17
R Ferstl, R Frei, W Barcik, E Schiavi, K Wanke, M Ziegler, N Rodriguez-Perez, D Groeger, P Konieczna, S Zeiter, D Nehrbass, Roger Lauener, C A Akdis, L O'Mahony
BACKGROUND: Histamine is a key immunoregulatory mediator and can dampen proinflammatory responses via activation of histamine receptor 2 (H2 R). The aim of this study was to determine the role of H2 R in modulating lung inflammatory responses. METHODS: H2 R was blocked using famotidine or activated using dimaprit in both the ovalbumin (OVA) and house dust mite extract (HDM) murine models of respiratory inflammation. H2 R-deficient animals and CD1d/ H2 R-deficient animals were utilized to examine the CD1d presentation of lipid antigens (αGal-Cer or OCH) to invariant Natural Killer T (iNKT) cells...
June 15, 2017: Allergy
https://www.readbyqxmd.com/read/28617942/withasteroid-b-from-d-metel-l-regulates-immune-responses-by-modulating-the-jak-stat-pathway-and-the-il-17-ror%C3%AE-t-il-10-foxp3-ratio
#18
Yang Su, Qiuhong Wang, Bingyou Yang, Lun Wu, Genhong Cheng, Haixue Kuang
Datura metel L. is a medicinal herb that contains withasteroids and has a wide range of biological activities. We isolated 7 withasteroids from the flowers of D. metel L(1) . and examined their ability to inhibit immune responses in vitro and in vivo. Among the withasteroids, B2(2) exhibited the strongest inhibitory effect on immune responses comparing B2 with other isolated compounds from D. metel L., including suppressing the differentiation of CD4(+3) T cells by inhibiting the expression and production of T cell lineage-specific master regulators and cytokines and directly suppressing the cytokine-induced JAK/STAT(4) signaling pathways...
June 15, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28615417/t-cell-restricted-notch-signaling-contributes-to-pulmonary-th1-and-th2-immunity-during-cryptococcus-neoformans-infection
#19
Lori M Neal, Yafeng Qiu, Jooho Chung, Enze Xing, Woosung Cho, Antoni N Malachowski, Ashley R Sandy-Sloat, John J Osterholzer, Ivan Maillard, Michal A Olszewski
Cryptococcus neoformans is a ubiquitous, opportunistic fungal pathogen but the cell signaling pathways that drive T cell responses regulating antifungal immunity are incompletely understood. Notch is a key signaling pathway regulating T cell development, and differentiation and functional responses of mature T cells in the periphery. The targeting of Notch signaling within T cells has been proposed as a potential treatment for alloimmune and autoimmune disorders, but it is unknown whether disturbances to T cell immunity may render these patients vulnerable to fungal infections...
June 14, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28615416/il-17-receptor-a-maintains-and-protects-the-skin-barrier-to-prevent-allergic-skin-inflammation
#20
Achilleas Floudas, Sean P Saunders, Tara Moran, Christian Schwartz, Emily Hams, Denise C Fitzgerald, James A Johnston, Graham S Ogg, Andrew N McKenzie, Patrick T Walsh, Padraic G Fallon
Atopic dermatitis (AD) is a common inflammatory skin disease affecting up to 20% of children and 3% of adults worldwide and is associated with dysregulation of the skin barrier. Although type 2 responses are implicated in AD, emerging evidence indicates a potential role for the IL-17A signaling axis in AD pathogenesis. In this study we show that in the filaggrin mutant mouse model of spontaneous AD, IL-17RA deficiency (Il17ra(-/-) ) resulted in severe exacerbation of skin inflammation. Interestingly, Il17ra(-/-) mice without the filaggrin mutation also developed spontaneous progressive skin inflammation with eosinophilia, as well as increased levels of thymic stromal lymphopoietin (TSLP) and IL-5 in the skin...
June 14, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
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