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https://www.readbyqxmd.com/read/29676074/immune-characterization-of-bone-marrow-derived-models-of-mucosal-and-connective-tissue-mast-cells
#1
Sara Benedé, Evan Cody, Charuta Agashe, M Cecilia Berin
PURPOSE: It is well appreciated that mast cells (MCs) demonstrate tissue-specific imprinting, with different biochemical and functional properties between connective tissue MCs (CTMCs) and mucosal MCs (MMCs). Although in vitro systems have been developed to model these different subsets, there has been limited investigation into the functional characteristics of the 2 major MC subsets. Here, we report the immunologic characterization of 2 MCs subsets developed in vitro from bone marrow progenitors modeling MMCs and CTMCs...
May 2018: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/29676068/trpv1-blocking-alleviates-airway-inflammation-and-remodeling-in-a-chronic-asthma-murine-model
#2
Joon Young Choi, Hwa Young Lee, Jung Hur, Kyung Hoon Kim, Ji Young Kang, Chin Kook Rhee, Sook Young Lee
PURPOSE: Asthma is a chronic inflammatory airway disease characterized by airway hyperresponsiveness (AHR), inflammation, and remodeling. There is emerging interest in the involvement of the transient receptor potential vanilloid 1 (TRPV1) channel in the pathophysiology of asthma. This study examined whether TRPV1 antagonism alleviates asthma features in a murine model of chronic asthma. METHODS: BALB/c mice were sensitized to and challenged by ovalbumin to develop chronic asthma...
May 2018: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/29672862/aryl-hydrocarbon-receptor-activation-by-diesel-exhaust-particles-mediates-epithelium-derived-cytokines-expression-in-severe-allergic-asthma
#3
Chih-Ming Weng, Chun-Hua Wang, Meng-Jung Lee, Jung-Re He, Hsin-Yu Huang, Ming-Wei Chao, Kian Fan Chung, Han-Pin Kuo
BACKGROUND: Exposure to environmental pollutants promotes Th2 cell responses. Aryl hydrocarbon receptor (AhR) activation aggravates allergic responses. Epithelium-derived thymic stromal lymphopoietin (TSLP), interleukin (IL)-25 and IL-33 are implicated in the dysregulation of Th2 immune responses in severe allergic asthma. METHODS: Bronchial biopsies of 28 allergic severe asthma and 6 mild asthma subjects from highly polluted areas were analyzed for AhR nuclear translocation (NT), cytokine expression and gene activation...
April 19, 2018: Allergy
https://www.readbyqxmd.com/read/29670037/expression-and-regulation-of-thymic-stromal-lymphopoietin-and-thymic-stromal-lymphopoietin-receptor-heterocomplex-in-the-innate-adaptive-immunity-of-pediatric-asthma
#4
REVIEW
Sheng-Chieh Lin, Fang-Yi Cheng, Jun-Jen Liu, Yi-Ling Ye
Asthma is a chronic inflammatory disease affecting the airway, and it is characterized by a wheezing breathing sound, variable airflow obstruction and the presence of inflammatory cells in the submucosa of the bronchi. Viral infection, pollutants and sensitivity to aeroallergens damage the epithelium from childhood, which causes asthma. The pathogenesis of asthma includes pathways of innate stimulation by environmental microbes and irritant pathogens. Damaged epithelial cells produce thymic stromal lymphopoietin (TSLP) and stimulate myeloid dendritic cell maturation through the thymic stromal lymphopoietin receptor (TSLPR) heterocomplex...
April 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29665497/the-effects-of-resiquimod-in-an-ovalbumin-induced-allergic-rhinitis-model
#5
Shenhong Qu, Taijie Qin, Min Li, Shaojie Zhang, Linsong Ye, Jiazhang Wei, Hua Fan, Baiwen Chen
Growing evidence indicates that the Toll-like receptor7/8(TLR7/8) agonist resiquimod (R848) is a potential inhibitor of type-2 immunity. However, the mechanisms mediating its therapeutic effects are not fully understood. This study investigated the effects of R848 on OVA-induced allergic rhinitis(AR) mice and the expression of IL-25, IL-33, TSLP, T-cell immunoglobulin mucin1 (TIM1) and T-cell immunoglobulin mucin3 (TIM3). BALB/c mice were intranasally sensitized and challenged with ovalbumin (OVA), and R848 was intraperitoneally injected into AR mice...
April 14, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29626211/targeting-cytokines-to-treat-asthma-and-chronic-obstructive-pulmonary-disease
#6
REVIEW
Peter J Barnes
Cytokines play a key role in orchestrating and perpetuating the chronic airway inflammation in asthma and chronic obstructive pulmonary disease (COPD), making them attractive targets for treating these disorders. Asthma and some cases of COPD are mainly driven by type 2 immune responses, which comprise increased airway eosinophils, T helper 2 (TH 2) cells and group 2 innate lymphoid cells (ILC2s) and the secretion of IL-4, IL-5 and IL-13. Clinical trials of antibodies that block these interleukins have shown reduced acute exacerbations and oral corticosteroid use and improvements in lung function and symptoms in selected patients...
April 6, 2018: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/29616048/tnfsf14-light-exhibits-inflammatory-activities-in-lung-fibroblasts-complementary-to-il-13-and-tgf-%C3%AE
#7
Ricardo da Silva Antunes, Amit K Mehta, Lisa Madge, Joel Tocker, Michael Croft
The cytokine TNFSF14 [homologous to Lymphotoxin, exhibits Inducible expression and competes with HSV Glycoprotein D for binding to HVEM, a receptor expressed on T lymphocytes (LIGHT)] has been shown in mouse models to be important for development of lung tissue remodeling that is characteristic of asthma, idiopathic pulmonary fibrosis (IPF), and systemic sclerosis (SSc). However, its cellular targets are not fully delineated. In the present report, we show that LTβR and HVEM, the receptors for LIGHT, are constitutively expressed in primary human lung fibroblasts (HLFs)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29602578/recent-advancement-in-the-mechanism-of-basophil-activation
#8
REVIEW
Chisa Nakashima, Atsushi Otsuka, Kenji Kabashima
Basophils have been recognized as crucial players in allergic inflammation. Basophils have the potential to initiate and expand inflammation through the production of specific cytokines and proteases, and are associated with T helper 2 (Th2) immune responses. In addition, recent studies revealed the heterogeneity in basophil populations. Basophils have been clarified important roles in not only IgE-mediated allergic inflammation but also TSLP-mediated and IgE-independent inflammation. Moreover, basophils infiltrate in many human cutaneous diseases...
March 13, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29556001/a-tumor-myeloid-cell-axis-mediated-via-the-cytokines-il-1%C3%AE-and-tslp-promotes-the-progression-of-breast-cancer
#9
Emma L Kuan, Steven F Ziegler
Tumors actively manipulate the immune response through the production of factors that attract immune cells and subsequently alter their ability to recognize and effectively remove the tumor. While this mechanism for evading the immune system is an important aspect of tumor survival, the factors that serve as primary growth factors for the tumor are less understood. Here we demonstrate a previously unknown mechanism by which breast-cancer cells manipulate tumor-infiltrating myeloid cells to maintain their survival...
March 19, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29550278/tslp-activated-dendritic-cells-induce-t-helper-type-2-inflammation-in-aspergillus-fumigatus-keratitis
#10
Lin Sun, Chen Chen, Jiayin Wu, Chenyang Dai, Xinyi Wu
Thymic stromal lymphopoietin (TSLP) is an IL-7-like cytokine, which is secreted by epithelial cells under the stimulation of Toll-like receptor (TLR) ligands. Dendritic cells (DCs) which express the thymic stromal lymphopoietin receptor (TSLPR) can be activated by TSLP. Mature DCs can express the OX40 ligand, which has the ability to combine with OX40 on the surface of T cells to stimulate T cell proliferation. TSLP secreted by corneal epithelial cells can engage in the process of T helper type 2 (Th2) inflammation in Aspergillus fumigatus keratitis, but the mechanism remains unclear...
March 14, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29535264/tslp-signaling-in-cd4-t-cells-programs-a-pathogenic-t-helper-2-cell-state
#11
Yrina Rochman, Krista Dienger-Stambaugh, Phoebe K Richgels, Ian P Lewkowich, Andrey V Kartashov, Artem Barski, Gurjit K Khurana Hershey, Warren J Leonard, Harinder Singh
Pathogenic T helper 2 (TH 2) cells, which produce increased amounts of the cytokines interleukin-5 (IL-5) and IL-13, promote allergic disorders, including asthma. Thymic stromal lymphopoietin (TSLP), a cytokine secreted by epithelial and innate immune cells, stimulates such pathogenic TH 2 cell responses. We found that TSLP signaling in mouse CD4+ T cells initiated transcriptional changes associated with TH 2 cell programming. IL-4 signaling amplified and stabilized the genomic response of T cells to TSLP, which increased the frequency of T cells producing IL-4, IL-5, and IL-13...
March 13, 2018: Science Signaling
https://www.readbyqxmd.com/read/29533987/the-effect-of-tomatine-on-gene-expression-and-cell-monolayer-integrity-in-caco-2
#12
Mattia P Arena, Coen Govers, Concetta Lotti, Luigi Ricciardi, Harry J Wichers, Jurriaan J Mes
More understanding of the risk-benefit effect of the glycoalkaloid tomatine is required to be able to estimate the role it might play in our diet. In this work, we focused on effects towards intestinal epithelial cells based on a Caco-2 model in order to analyze the influence on the cell monolayer integrity and on the expression levels of genes involved in cholesterol/sterol biosynthesis (LDLR), lipid metabolism (NR2F2), glucose and amino acid uptake (SGLT1, PAT1), cell cycle (PCNA, CDKN1A), apoptosis (CASP-3, BMF, KLF6), tight junctions (CLDN4, OCLN2) and cytokine-mediated signaling (IL-8, IL1β, TSLP, TNF-α)...
March 13, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29532517/roseburia-intestinalis-alleviates-experimental-colitis-pathology-by-inducing-anti-inflammatory-responses
#13
Zhaohua Shen, Changxin Zhu, Yongsheng Quan, Jinming Yang, Wei Yuan, Zhenyu Yang, Shuai Wu, Weiwei Luo, Bei Tan, Xiaoyan Wang
BACKGROUND AND AIM: To elucidate the anti-inflammatory effect and mechanism of Roseburia intestinalis (R.intestinalis) in Crohn's disease (CD). METHODS: 16S-rRNA genome sequencing technique is used to detect the characteristics of intestinal microbiota in untreated CD patients and healthy controls. Then we investigate the effects of R.intestinalis on disease activity index (DAI) score, intestinal pathology, the differentiation of Treg cells and the expressions of TSLP, TGF-β, IL-10 by using TNBS colitis models...
March 12, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29525270/evaluation-of-murine-lung-epithelial-cells-tc-1-jhu-1-line-to-develop-th2-promoting-cytokines-il-25-il-33-tslp-and-genes-tlr2-tlr4-in-response-to-aspergillus-fumigatus
#14
A R Khosravi, H Shokri, S Hassan Al-Heidary, F Ghafarifar
OBJECTIVE: The aims of this study were to determine the role of live and heat-killed Aspergillus fumigatus conidia in releasing interleukin (IL)-25, IL-33 and thymic stromal lymphopoietin (TSLP) and to express Toll-like receptor (Tlr)2 and Tlr4 genes. MATERIALS AND METHODS: Murine lung epithelial cells were incubated with live and heat-killed A. fumigatus conidia at 37°C for 6, 24 and 48h. After treatments, ELISA was performed to measure the concentrations of IL-25, IL-33 and TSLP in the supernatants...
March 7, 2018: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29522843/il-25-enhances-th17-cell-mediated-contact-dermatitis-by-promoting-il-1%C3%AE-production-by-dermal-dendritic-cells
#15
Hajime Suto, Aya Nambu, Hideaki Morita, Sachiko Yamaguchi, Takafumi Numata, Takamichi Yoshizaki, Eri Shimura, Ken Arae, Yousuke Asada, Kenichiro Motomura, Mari Kaneko, Takaya Abe, Akira Matsuda, Yoichiro Iwakura, Ko Okumura, Hirohisa Saito, Kenji Matsumoto, Katsuko Sudo, Susumu Nakae
BACKGROUND: As well as thymic stromal lymphopoietin (TSLP) and IL-33, IL-25 is known to induce Th2 cytokine production by various cell types-including Th2 cells, Th9 cells, invariant NKT cells and group 2 innate lymphoid cells-involved in Th2-type immune responses. Since both Th2-type and Th17-type cells/cytokines are crucial for contact hypersensitivity (CHS), IL-25 may contribute to this by enhancing Th2-type immune responses. However, the precise role of IL-25 in the pathogenesis of FITC-induced CHS is poorly understood...
March 6, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29500243/all-trans-retinoic-acid-enhances-antibody-production-by-inducing-the-expression-of-thymic-stromal-lymphopoietin-protein
#16
Takahiro Hatayama, Ryosuke Segawa, Natsumi Mizuno, Sumiko Eguchi, Hiroshi Akamatsu, Misaki Fukuda, Fumihisa Nakata, Warren J Leonard, Masahiro Hiratsuka, Noriyasu Hirasawa
Many classical vaccines contain whole pathogens and, thus, may occasionally induce adverse effects, such as inflammation. Vaccines containing purified rAgs resolved this problem, but, owing to their low antigenicity, they require adjuvants. Recently, the use of several cytokines, including thymic stromal lymphopoietin (TSLP), has been proposed for this purpose. However, it is difficult to use cytokines as vaccine adjuvants in clinical practice. In this study, we examined the effects of all- trans retinoic acid (atRA) on TSLP production and Ag-induced Ab production...
March 2, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29475513/single-blinded-randomized-placebo-controlled-study-on-the-effects-of-ciclosporin-on-cutaneous-barrier-function-and-immunological-response-in-atopic-beagles
#17
Amelia G White, Domenico Santoro, Kim Ahrens, Rosanna Marsella
Ciclosporin (CsA) is a common treatment for canine atopic dermatitis (cAD). cAD is a very common skin disease with a multifactorial pathogenesis due to complex interactions between the host and the environment. The purpose of this study was to describe the physical and immunological effects of CsA in cAD using a canine model of AD. Fourteen beagles were enrolled; seven received CsA orally every 24 h for 28 days, and seven received placebo. All dogs were exposed to relevant allergens, house dust mite solution, one day prior to treatment and once weekly thereafter for 28 consecutive days...
March 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29474945/neutralization-of-il-17c-reduces-skin-inflammation-in-mouse-models-of-psoriasis-and-atopic-dermatitis
#18
Nick Vandeghinste, Jürgen Klattig, Catherine Jagerschmidt, Stéphanie Lavazais, Florence Marsais, Jan D Haas, Marielle Auberval, Felix Lauffer, Tara Moran, Mate Ongenaert, Maarten Van Balen, Sonia Dupont, Liên Lepescheux, Teresa Garcia, Stefan Härtle, Kilian Eyerich, Padraic G Fallon, Reginald Brys, Stefan Steidl
Interleukin-17C (IL-17C) is a functionally distinct member of the IL-17 family that was implicated to play a role in the pathogenesis of psoriasis. Here we confirmed that IL-17C is involved in psoriasis and explored potential roles for IL-17C in atopic dermatitis (AD). An anti-IL-17C antibody, MOR106, was generated that potently and selectively binds to human and mouse IL-17C, thereby inhibiting the binding of IL-17C to its IL-17RE receptor. The antibody inhibited cutaneous inflammation in an IL-23-induced psoriatic-like skin inflammation model...
February 20, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29462589/potentiation-of-skin-tslp-production-by-a-cosmetic-colorant-leads-to-aggravation-of-dermatitis-symptoms
#19
Gabsik Yang, Hye Eun Lee, Kyung-Min Lim, Yong-Kyu Choi, Kyu-Bong Kim, Byung-Mu Lee, Joo Young Lee
Certain cosmetic colorants are irritant to skin or aggravate dermatitis. Thymic stromal lymphopoietin (TSLP) plays an important role in the initiation and progress of skin inflammation and atopic dermatitis by triggering Th2 immune responses. However, the effects of cosmetic colorants on TSLP production are unknown yet. Therefore, we investigated whether cosmetic colorants regulated TSLP production and dermatitis. Lithol Rubine B (LR-B, Pigment Red 57) and its calcium salt (LR-BCA), commonly used cosmetic colorants, potentiated phorbol-12-myristate-13-acetate-induced TSLP production in keratinocytes...
February 17, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29458221/thyroid-stimulating-hormone-stimulated-human-adipocytes-express-thymic-stromal-lymphopoietin
#20
Loretta Ma, AnneMarie Gagnon, Anne Landry, Timothea Le, Fengxia Xiao, Cathy Sun, Heather A Lochnan, Dylan Burger, Alexander Sorisky
When recombinant human (rh) thyroid-stimulating hormone (TSH) is administered to thyroid cancer survivors, an acute extra-thyroidal effect raises pro-inflammatory cytokines and activates platelets. Thymic stromal lymphopoietin (TSLP) is a cytokine recently implicated in platelet activation. Our aim was to measure platelet microparticle levels after rhTSH stimulation in vivo, and to investigate TSLP expression in TSH-stimulated human adipocytes in culture. Blood samples for total and platelet microparticle analysis were obtained from thyroid cancer survivors before (day 1) and after rhTSH administration (day 5)...
February 19, 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
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