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Tslp cytokine

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https://www.readbyqxmd.com/read/29024606/role-of-the-tslp-dc-ox40l-pathway-in-asthma-pathogenesis-and-airway-inflammation-in-mice
#1
Shuang Feng, Li Zhang, Xu-Hua Bian, Ying Luo, Guang-Hui Qin, Rui-Ming Shi
This study aims to explore the effect of the TSLP/DC/OX40L pathway in asthma pathogenesis and airway inflammation in mice. Sixty-five male BALF/c mice were divided into the control, asthma, IgG + asthma (IgG, 500 g/500 l, intratracheal injection of 50 l each time), LY294002 (OX40L inhibitor) + asthma (intratracheal injection of 2 mg/kg LY294002), and anti-TSLP + asthma (intratracheal injection of 500 ug/500 l TSLP antibody, 50 l each time) groups. ELISA was applied to measure the serum levels of IgE, ovalbumin (OVA)-sIgE, interleukin-4 (IL-4), IL-5, IL-13 and interferon-γ (IFN-γ), flow cytometry was employed to detect Treg cells and dendritic cell (DC) and lymphopoiesis...
October 12, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29017796/anti-inflammatory-effect-of-collagen-tripeptide-in-atopic-dermatitis
#2
Amiko Hakuta, Yukie Yamaguchi, Tomoko Okawa, Shoko Yamamoto, Yasuo Sakai, Michiko Aihara
BACKGROUND: Atopic dermatitis (AD) is a chronic, pruritic inflammatory skin disease in which type 2 allergic inflammation plays an important role. Collagen tripeptide (CTP) is a functional collagen fraction with a high content of Gly-X-Y tripeptides. OBJECTIVE: To examine the effect of CTP on inflammation in AD. METHODS: Levels of inflammatory cytokines and chemokines, such as thymus- and activation-regulated chemokine (TARC), macrophage-derived chemokine, and thymic stromal lymphopoietin (TSLP), were examined in human keratinocytes supplemented with or without CTP under AD-like inflammation...
September 28, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28972901/maternal-exposure-to-environmental-dehp-exacerbated-ova-induced-asthmatic-responses-in-rat-offspring
#3
Bohan Wang, Fangwei Liu, Jing Dong, Mingdan You, Yuanyuan Fu, Chao Li, Yiping Lu, Jie Chen
Di (ethylhexyl) phthalate (DEHP) is a commonly used phthalates (PAEs) compound as plasticizer and becomes a severe environmental pollutant worldwide. Studies show that DEHP, as an environmental endocrine disruptor, has potential adverse effects on human. Epidemiologic studies indicate that DEHP is positively correlated to allergic diseases. Maternal exposure to DEHP may contribute to the increasing incidence of allergic diseases in offspring. However, the role of DEHP and its detailed mechanism in allergic disease of the offspring are still unclear...
September 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28967978/topical-glucose-induces-claudin-1-and-filaggrin-expression-in-a-mouse-model-of-atopic-dermatitis-and-in-keratinocyte-culture-exerting-anti-inflammatory-effects-by-repairing-skin-barrier-function
#4
Kiyoko Yamada, Kenji Matsushita, Wang Jingshu, Takuro Kanekura
Atopic dermatitis (AD) is a chronic inflammatory skin disease. Corticosteroids, which are widely used for AD treatment, have adverse effects, and alternative treatments are urgently needed. This study examined the effect of topical application of high-dose glucose on inflamed skin in a murine model of AD. High-dose glucose treatment on the ear reduced dermatitis scores and ear thicknesses in mite antigen-treated NC/Nga mice. The levels of thymus and activation-regulated chemokine (TARC), Th cytokines (interleukin (IL)-4, IL-5, IL-12, IL-13, and (interferon) IFN-γ), and IgE were decreased in the serum of high-dose glucose-treated mice...
October 2, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28966674/tlr4-antagonist-suppresses-airway-remodeling-in-asthma-by-inhibiting-the-t-helper-2-response
#5
Ming Li, Zhao-Ni Wang, Li-Fen Yang, Yan Yan, Liang-Ming Cai, Ya-Ting Li, Yong-Kang Qiao, Zhuang-Gui Chen
Airway remodeling is a hallmark of bronchial asthma. Our group has previously reported that the thymic stromal lymphopoietin (TSLP), an airway epithelial-derived cytokine, has a central role in the pathogenesis of airway remodeling, and that toll-like receptor (TLR) 4 signaling in epithelial cells may trigger T-helper 2 (Th2) immune responses by overexpression of TSLP. However, it is currently unclear whether TLR4 is a target in the treatment of airway remodeling in asthma. The present study established a house dust mite (HDM)-induced chronic asthmatic model in female BALB/c mice and treated the HDM-exposed mice with 3 mg/kg TAK242, as a TLR4 antagonist, 30 min prior to HDM challenge for up to 2 weeks...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28959799/cytokine-and-lipid-mediator-regulation-of-group-2-innate-lymphoid-cells-ilc2s-in-human-allergic-airway-disease
#6
Kellen Cavagnero, Taylor A Doherty
The recent discovery of group 2 innate lymphoid cells (ILC2s) has caused a paradigm shift in the understanding of allergic airway disease pathogenesis. Prior to the discovery of ILC2s, Th2 cells were largely thought to be the primary source of type 2 cytokines; however, activated ILC2s have since been shown to contribute significantly, and in some cases, dominantly to type 2 cytokine production. Since the discovery of ILC2s in 2010, many mediators have been shown to regulate their effector functions. Initial studies identified the epithelial derived cytokines IL-25, IL-33, and TSLP as activators of ILC2s, and recent studies have identified many additional cytokine and lipid mediators that are involved in ILC2 regulation...
August 2017: J Cytokine Biol
https://www.readbyqxmd.com/read/28945245/identification-of-lineage-specifying-cytokines-that-signal-all-cd8-cytotoxic-lineage-fate-decisions-in-the-thymus
#7
Ruth Etzensperger, Tejas Kadakia, Xuguang Tai, Amala Alag, Terry I Guinter, Takeshi Egawa, Batu Erman, Alfred Singer
T cell antigen receptor (TCR) signaling in the thymus initiates positive selection, but the CD8(+)-lineage fate is thought to be induced by cytokines after TCR signaling has ceased, although this remains controversial and unproven. We have identified four cytokines (IL-6, IFN-γ, TSLP and TGF-β) that did not signal via the common γ-chain (γc) receptor but that, like IL-7 and IL-15, induced expression of the lineage-specifying transcription factor Runx3d and signaled the generation of CD8(+) T cells. Elimination of in vivo signaling by all six of these 'lineage-specifying cytokines' during positive selection eliminated Runx3d expression and completely abolished the generation of CD8(+) single-positive thymocytes...
September 25, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28943560/serum-biomarkers-for-the-diagnosis-of-eosinophilic-esophagitis-and-eosinophilic-gastroenteritis
#8
Shunji Ishihara, Tetsuo Shoda, Norihisa Ishimura, Shoichiro Ohta, Junya Ono, Yoshinori Azuma, Eiko Okimoto, Kenji Izuhara, Ichiro Nomura, Kenji Matsumoto, Yoshikazu Kinoshita
Objective Clinically useful serum biomarkers for the diagnosis and monitoring of eosinophilic gastrointestinal diseases are not available. This study was conducted to examine the possible value of eosinophil-related proteins as serum biomarkers. Methods The serum concentrations of 49 cytokines, chemokines, and other proteins were measured in 29 patients with eosinophilic gastrointestinal diseases and 80 controls. Results The levels of interleukin (IL)-5, IL-33, eotaxin-3, and thymic stromal lymphopoietin (TSLP), previously reported as possible biomarkers of eosinophilic esophagitis, were not significantly elevated in the serum...
September 25, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28941636/role-of-airway-epithelial-barrier-dysfunction-in-pathogenesis-of-asthma
#9
REVIEW
Yasuhiro Gon, Shu Hashimoto
Bronchial asthma is characterized by persistent cough, increased sputum, and repeated wheezing. The pathophysiology underlying these symptoms is the hyper-responsiveness of the airway along with chronic airway inflammation. Repeated injury, repair, and regeneration of the airway epithelium following exposure to environmental factors and inflammation results in histological changes and functional abnormalities in the airway mucosal epithelium; such changes are believed to have a significant association with the pathophysiology of asthma...
September 20, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28940472/serine-protease-allergen-favours-th2-responses-via-par-2-and-stat-3-activation-in-murine-model
#10
Komal Agrawal, Naveen Arora
BACKGROUND: Protease activity of Per a 10 favours Th2 responses by differential regulation of IL-12p70 and IL-23 cytokine subunits. The present study aims to elucidate the underlying mechanism of differential regulation of IL-12p70 and IL-23. METHODS: PAR-2 activation was blocked in murine model by administering SAM11 before each sensitization. CD11c(+) p-STAT3(+) cells were measured in lungs by flow cytometry. BMDCs were pre-treated with SAM-11 or isotype control or stattic and stimulated with Per a 10...
September 20, 2017: Allergy
https://www.readbyqxmd.com/read/28928735/the-expression-of-the-short-isoform-of-thymic-stromal-lymphopoietin-in-the-colon-is-regulated-by-the-nuclear-receptor-peroxisome-proliferator-activated-receptor-gamma-and-is-impaired-during-ulcerative-colitis
#11
Anthony Martin Mena, Audrey Langlois, Silvia Speca, Lucil Schneider, Pierre Desreumaux, Laurent Dubuquoy, Benjamin Bertin
The etiology of inflammatory bowel diseases remains largely unknown. We previously demonstrated that the expression of the peroxisome proliferator activated receptor-gamma (PPARγ) is downregulated in colonic epithelial cells of patients with ulcerative colitis (UC). PPARγ is a nuclear receptor that modulates inflammation. We hypothesized that its deficiency may play a role in the loss of intestinal homeostasis through the control of immunomodulatory factors. We found that thymic stromal lymphopoietin (TSLP), an epithelial cytokine with pleiotropic functions, is regulated by PPARγ...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28927768/synthesis-and-biological-evaluation-of-peptide-derived-tslp-inhibitors
#12
Seonghu Park, Yeeun Park, Sang-Hyun Son, Kiho Lee, Yong Woo Jung, Ki Yong Lee, Young Ho Jeon, Youngjoo Byun
Thymic stromal lymphopoietin (TSLP) is a type II cytokine which is associated with most inflammatory allergic disorders in humans. It is produced mainly by epithelial cells with important role in the development of chronic inflammatory diseases by activating T-helper cell type-2 (TH2) pathways. In this study, a total of 16 peptides were prepared by solid phase peptide synthesis based on amino acid sequences of the interface between TSLP and TSLP receptor. Their TSLP inhibition activities were determined by ELISA assay...
September 7, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28877011/tezepelumab-in-adults-with-uncontrolled-asthma
#13
RANDOMIZED CONTROLLED TRIAL
Jonathan Corren, Jane R Parnes, Liangwei Wang, May Mo, Stephanie L Roseti, Janet M Griffiths, René van der Merwe
BACKGROUND: In some patients with moderate-to-severe asthma, particularly those with noneosinophilic inflammation, the disease remains uncontrolled. This trial evaluated the efficacy and safety of tezepelumab (AMG 157/MEDI9929), a human monoclonal antibody specific for the epithelial-cell-derived cytokine thymic stromal lymphopoietin (TSLP), in patients whose asthma remained uncontrolled despite treatment with long-acting beta-agonists and medium-to-high doses of inhaled glucocorticoids...
September 7, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28867182/deficiency-of-klf4-compromises-the-lung-function-in-an-acute-mouse-model-of-allergic-asthma
#14
Jeanette A Nimpong, Wintana Gebregziabher, Udai P Singh, Prakash Nagarkatti, Mitzi Nagarkatti, Johnie Hodge, Chunming Liu, Daping Fan, Walden Ai
Asthma is a chronic inflammatory disease of the airways and the mechanisms are not fully understood. Myeloid-derived suppressor cells (MDSCs) are a heterogeneous group of monocytes, granulocyte and myeloid cells at early stage of differentiation. They possess phenotypic plasticity and regulate airway inflammation. We recently reported that Kruppel-like factor 4 (KLF4) regulates MDSC differentiation into fibrocytes, emerging effectors in chronic inflammation. However, the role of KLF4 in asthma is not known...
November 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28833499/manifestation-of-atopic-dermatitis-like-skin-in-tncb-induced-nc-nga-mice-is-ameliorated-by-topical-treatment-of-substance-p-possibly-through-blockade-of-allergic-inflammation
#15
Hyeongwon Choi, Dong-Jin Kim, Seungwoo Nam, Sunki Lim, Jae-Sung Hwang, Ki Sook Park, Hyun Sook Hong, Min Kyung Shin, Eunkyung Chung, Youngsook Son
Atopic dermatitis (AD) is a chronic inflammatory skin disorder characterized by intense pruritus and eczematous lesion. In this study, topically applied substance P (SP) significantly alleviated AD-like clinical symptoms in 2, 4, 6-trinitrochlorobenzene (TNCB)-induced dermatitis in NC/Nga mice. This effect was nullified by pre-treatment of the neurokinin-1 receptor (NK-1R) antagonist CP99994. SP treatment significantly reduced the infiltration of mast cells and CD3-positive T cells as well as inflammatory cytokines, such as tumor necrosis factor-α (TNF-α) and thymic stromal lymphopoietin (TSLP), in AD-like skin lesions and decreased the levels of IgE and thymus and activation-regulated chemokine in serum...
August 20, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28783679/a-tslp-complement-axis-mediates-neutrophil-killing-of-methicillin-resistant-staphylococcus-aureus
#16
Erin E West, Rosanne Spolski, Majid Kazemian, Zu Xi Yu, Claudia Kemper, Warren J Leonard
Community-acquired Staphylococcus aureus infections often present as serious skin infections in otherwise healthy individuals and have become a worldwide epidemic problem fueled by the emergence of strains with antibiotic resistance, such as methicillin-resistant S. aureus (MRSA). The cytokine thymic stromal lymphopoietin (TSLP) is highly expressed in the skin and in other barrier surfaces and plays a deleterious role by promoting T helper cell type 2 (TH2) responses during allergic diseases; however, its role in host defense against bacterial infections has not been well elucidated...
November 18, 2016: Science Immunology
https://www.readbyqxmd.com/read/28774591/topical-ror-inverse-agonists-suppress-inflammation-in-mouse-models-of-atopic-dermatitis-and-acute-irritant-dermatitis
#17
Jun Dai, Min-Kyung Choo, Jin Mo Park, David E Fisher
The retinoic acid receptor-related orphan receptors RORα and RORγ are critical for the functions of specific subsets of T cells and innate lymphoid cells, which are key drivers of inflammatory disease in barrier tissues. Here, we investigate the anti-inflammatory potential of SR1001, a synthetic RORα/γ inverse agonist, in mouse models of atopic dermatitis and acute irritant dermatitis. Topical treatment with SR1001 reduces epidermal and dermal features of MC903-induced atopic dermatitis-like disease, and suppresses the production of type 2 cytokines and other inflammatory mediators in lesional skin...
July 31, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28769924/thymic-stromal-lymphopoietin-is-critical-for-regulation-of-proinflammatory-cytokine-response-and-resistance-to-experimental-trypanosoma-congolense-infection
#18
Chukwunonso Onyilagha, Rani Singh, Abdelilah Soussi Gounni, Jude Ezeh Uzonna
African trypanosomiasis (sleeping sickness) poses serious threat to human and animal health in sub-Saharan Africa. Because there is currently no vaccine for preventing this disease and available drugs are not safe, understanding the mechanisms that regulate resistance and/or susceptibility to the disease could reveal novel targets for effective disease therapy and prevention. Thymic stromal lymphopoietin (TSLP) plays a critical role in driving Th2 immune response. Although susceptibility to experimental Trypanosoma congolense infection in mice is associated with excessive proinflammatory responses due in part to impaired Th2 response, the role of TSLP in resistance to African trypanosomiasis has not been well studied...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28765890/fine-particulate-matter-aggravates-allergic-airway-inflammation-through-thymic-stromal-lymphopoietin-activation-in-mice
#19
Yan Liu, Gan-Zhu Feng, Qiang Du, Xiao-Xiang Jin, Xing-Ran Du
Fine particulate matter (PM2.5) has been linked to exacerbation of allergic airway inflammation in mice. However, the mechanism underlying exposure to PM2.5 and subsequent and adverse effects remains to be fully elucidated. Therefore, the present study aimed to investigate the effects of PM2.5 by different levels on airway inflammation in mouse models of in allergic and steroid‑resistant asthma. BALB/c mice were nasally instilled with PBS (control) or 10, 31.6 or 100 µg PM2.5, and randomly assigned into nine groups...
October 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28757265/pathophysiology-of-eosinophilic-esophagitis
#20
Kelly M O'Shea, Seema S Aceves, Evan S Dellon, Sandeep K Gupta, Jonathan M Spergel, Glenn T Furuta, Marc E Rothenberg
Eosinophilic esophagitis (EoE) is an emerging disease that is distinguished from gastroesophageal reflux disease (GERD) by the expression of a unique esophageal transcriptome and the interplay of early life environmental factors with distinct genetic susceptibility elements at 5q22 (TSLP) and 2p23 (CAPN14). Rare genetic syndromes have uncovered the contribution of barrier disruption, mediated in part by defective desmosomes and dysregulated transforming factor beta (TGF-β) production and signaling, to EoE pathophysiology...
July 27, 2017: Gastroenterology
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