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Allergy, Th2 cells

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https://www.readbyqxmd.com/read/29021893/the-efficacy-of-oral-and-subcutaneous-antigen-specific-immunotherapy-in-murine-cow-s-milk-and-peanut-allergy-models
#1
Marlotte M Vonk, Laura Wagenaar, Raymond H H Pieters, Leon M J Knippels, Linette E M Willemsen, Joost J Smit, Betty C A M van Esch, Johan Garssen
BACKGROUND: Antigen-specific immunotherapy (AIT) is a promising therapeutic approach for both cow's milk allergy (CMA) and peanut allergy (PNA), but needs optimization in terms of efficacy and safety. AIM: Compare oral immunotherapy (OIT) and subcutaneous immunotherapy (SCIT) in murine models for CMA and PNA and determine the dose of allergen needed to effectively modify parameters of allergy. METHODS: Female C3H/HeOuJ mice were sensitized intragastrically (i...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28952282/activation-and-inhibition-of-adaptive-immune-response-mediated-by-mast-cells
#2
E Toniato, I Frydas, I Robuffo, G Ronconi, Al Caraffa, S K Kritas, P Conti
Adaptive immune response plays an important role against bacteria and parasites, a reaction that also involves mast cell (MC) activation which participates in innate and adaptive immunity. In allergic reactions there is a TH2 immune response with generation of allergen-specific IgE antibodies. In MCs, IgE cross-link FcRI high affinity receptor and activate tyrosine kinase proteins, leading to stimulation of NF-κB and AP-1 resulting in the release of a number of cytokines/chemokines and other compounds. Through their proteolytic pathways, MCs may process the antigen for presentation to CD4+ cells which release TH2 cytokines and growth factors, which play an important role in asthma, allergy, anaphylaxis and inflammation...
July 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28951732/deficiency-in-calcium-binding-protein-s100a4-impairs-the-adjuvant-action-of-cholera-toxin
#3
Jia-Bin Sun, Jan Holmgren, Maximilian Larena, Manuela Terrinoni, Yu Fang, Anne R Bresnick, Zou Xiang
The calcium-binding protein S100A4 has been described to promote pathological inflammation in experimental autoimmune and inflammatory disorders and in allergy and to contribute to antigen presentation and antibody response after parenteral immunization with an alum-adjuvanted antigen. In this study, we extend these findings by demonstrating that mice lacking S100A4 have a defective humoral and cellular immune response to mucosal (sublingual) immunization with a model protein antigen [ovalbumin (OVA)] given together with the strong mucosal adjuvant cholera toxin (CT), and that this impairment is due to defective adjuvant-stimulated antigen presentation by antigen-presenting cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28950276/a-mouse-model-of-anaphylaxis-and-atopic-dermatitis-to-salt-soluble-wheat-protein-extract
#4
Yining Jin, Sarah Ebaugh, Anna Martens, Haoran Gao, Eric Olson, Perry K W Ng, Venu Gangur
BACKGROUND: Wheat allergy and other immune-mediated disorders triggered by wheat proteins are growing at an alarming rate for reasons not well understood. A mouse model to study hypersensitivity responses to salt-soluble wheat protein (SSWP) extract is currently unavailable. Here we tested the hypothesis that SSWP extract from wheat will induce sensitization as well as allergic disease in mice. METHODS: Female BALB/cJ mice were weaned onto a plant protein-free diet...
September 27, 2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28943447/anti-allergic-effects-of-the-ethanol-extract-of-syzygium-formosum-wall-masam-leaves-and-its-immunoregulatory-mechanisms
#5
Thi Minh Nguyet Nguyen, Maria Lomunova, Thi Phuong Duyen Vu, Ba Vinh Le, Young Ho Kim, Jong Seong Kang, Inkyu Hwang
ETHNOPHARMACOLOGICAL RELEVANCE: As documented in a Vietnamese traditional medical encyclopedia, Syzygium formosum (Wall.) Masam leaves have been routinely used among indigenous Vietnamese people for treatment of various allergy-like symptoms including dermatitis and rhinitis. AIM OF THE STUDY: Anti-allergic activity of S. formosum leaves was examined with a mouse model of chicken ovalbumin (cOVA)-induced food allergy, and mechanisms underlying the anti-allergic effect were explored...
September 21, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28924222/conjugation-of-wildtype-and-hypoallergenic-mugwort-allergen-art-v-1-to-flagellin-induces-il-10-dc-and-suppresses-allergen-specific-th2-responses-in-vivo
#6
Schülke Stefan, Kuttich Kirsten, Wolfheimer Sonja, Duschek Nadine, Wangorsch Andrea, Reuter Andreas, Briza Peter, Pablos Isabel, Gadermaier Gabriele, Ferreira Fatima, Vieths Stefan, Toda Masako, Scheurer Stephan
Allergies to weed pollen including members of the Compositae family, such as mugwort, ragweed, and feverfew are spreading worldwide. To efficiently treat these newly arising allergies, allergen specific immunotherapy needs to be improved. Therefore, we generated novel vaccine candidates consisting of the TLR5-ligand Flagellin A from Listeria and the major mugwort allergen Art v 1 including either the wild type Art v 1 sequence (rFlaA:Artv1) or a hypoallergenic variant (rFlaA:Artv1(hyp)) with reduced IgE-binding capacity...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28921585/allergooncology-opposite-outcomes-of-immune-tolerance-in-allergy-and-cancer
#7
E Jensen-Jarolim, H J Bax, R Bianchini, S Crescioli, T R Daniels-Wells, D Dombrowicz, E Fiebiger, H J Gould, S Irshad, J Janda, D H Josephs, F Levi-Schaffer, L O Mahony, G Pellizzari, M L Penichet, F Redegeld, F Roth-Walter, J Singer, E Untersmayr, L Vangelista, S N Karagiannis
While desired for the cure of allergy, regulatory immune cell subsets and nonclassical Th2-biased inflammatory mediators in the tumour microenvironment can contribute to immune suppression and escape of tumours from immunological detection and clearance. A key aim in the cancer field is therefore to design interventions that can break immunological tolerance and halt cancer progression, whereas on the contrary allergen immunotherapy exactly aims to induce tolerance. In this position paper, we review insights on immune tolerance derived from allergy and from cancer inflammation, focusing on what is known about the roles of key immune cells and mediators...
September 16, 2017: Allergy
https://www.readbyqxmd.com/read/28917991/enhanced-expression-of-pd-l1-and-ifn-%C3%AE-on-dendritic-cells-is-associated-with-bcg-induced-th2-inhibition
#8
A C C Gouveia, F G Braga, M Mota, F M C Silva, A S S Brugiolo, E E Oliveira, M C Ayupe, H C Teixeira, A P Ferreira
Accumulating evidence indicates that the exposure to Mycobacterium bovis bacillus Calmette-Guérin (BCG) prevents the development of allergy and the airway dendritic cells (DCs) may be involved in this protective effect. However, studies to better characterize the specific interactions between BCG and DCs and their role in this mycobacteria-mediated Th2 cell suppression are still ongoing. This study aimed to evaluate the effect of the neonatal BCG vaccination in the innate immune response in a mouse model of ovalbumin (OVA)-induced airway inflammation...
September 14, 2017: Cytokine
https://www.readbyqxmd.com/read/28912020/intestinal-dysbiosis-featuring-abundance-of-ruminococcus-gnavus-associates-with-allergic-diseases-in-infants
#9
Huey-Huey Chua, Hung-Chieh Chou, Ya-Ling Tung, Bor-Luen Chiang, Chien-Chia Liao, Hong-Hsing Liu, Yen-Hsuan Ni
BACKGROUND & AIMS: Dysbiosis of the intestinal microbiota has been associated with development of allergies in infants. However, it is not clear what microbes might contribute to this process. We investigated what microbe(s) might be involved in analyses of infant twins and mice. METHODS: We studied fecal specimens prospectively in a twin cohort (n=30) and age-matched singletons (n=14) born at National Taiwan University Children's Hospital, Taipei, Taiwan, from April 2011 to March 2013...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28889953/role-of-b-cells-in-t-helper-cell-responses-in-a-mouse-model-of-asthma
#10
Tomasz Piotr Wypych, Roberta Marzi, Gregory F Wu, Antonio Lanzavecchia, Federica Sallusto
BACKGROUND: The importance of B lymphocytes to present antigens for antibody production is well documented. In contrast, very little is known about their capacity to influence CD4(+) T cell activation during primary or secondary response to allergens. OBJECTIVE: Using mouse models of asthma, we investigated the role of B cells as antigen presenting cells in propagation and initiation of T helper cell responses. METHODS: Mice were immunized via intranasal route with house dust mite extract (HDM) derived from Dermatophagoides pteronyssinus...
September 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28886863/critical-role-of-mammalian-target-of-rapamycin-for-il-10-dendritic-cell-induction-by-a-flagellin-a%C3%A2-conjugate-in-preventing-allergic-sensitization
#11
Stefan Schülke, Anna-Helena Fiedler, Ann-Christine Junker, Adam Flaczyk, Sonja Wolfheimer, Andrea Wangorsch, Anke Heinz, Hendrik Beckert, Birgit Nagl, Barbara Bohle, Stefan Vieths, Masako Toda, Stephan Scheurer
BACKGROUND: Fusion proteins incorporating the Toll-like receptor 5 ligand flagellin are currently undergoing clinical trials as vaccine candidates for many diseases. OBJECTIVE: We studied the mechanisms of immune modulation by a flagellin:allergen fusion protein containing the Toll-like receptor 5 ligand flagellin A from Listeria monocytogenes and the birch pollen allergen Bet v 1 (recombinant flagellin A [rFlaA]:Betv1). METHODS: BALB/c mice were vaccinated with rFlaA:Betv1 in an experimental Bet v 1 sensitization model...
August 25, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28869867/atopic-dermatitis-and-psoriasis-two-different-immune-diseases-or-one-spectrum
#12
REVIEW
Emma Guttman-Yassky, James G Krueger
Psoriasis and atopic dermatitis (AD) are common T-cell mediated inflammatory diseases of the skin that can be treated by specific cytokine antagonists or more broad immunosuppressive drugs. The diseases are similar in that epidermal keratinocytes respond to T-cell derived cytokines by altering growth and differentiation responses, accounting for major parts of the overall disease phenotype. When studied across European-American populations, psoriasis and AD display differing T-cell polarity and different arrays of cytokines...
September 1, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28863235/therapeutic-potential-of-%C3%AE-lipoic-acid-derivative-sodium-zinc-histidine-dithiooctanamide-in-a-mouse-model-of-allergic-rhinitis
#13
Toshiaki Nakano, Li-Wen Hsu, Chia-Yun Lai, Yuki Takaoka, Masafumi Inomata, Seigo Kitano, Chao-Long Chen, Shigeru Goto
BACKGROUND: Oxidative stress is involved in various diseases, including allergies. Several studies have pointed to the preventive and therapeutic potential of antioxidants in allergic disorders. However, little is known about the immunomodulatory effects of antioxidants in type I hypersensitivity. In this study we aimed to explore the impact of a water-soluble antioxidant and α-lipoic acid derivative, sodium zinc histidine dithiooctanamide (DHL-HisZn), on mast-cell- and T-cell-mediated allergic and immune responses both in vitro and in vivo...
September 1, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28857182/altered-mir-193a-5p-expression-in-children-with-cow-s-milk-allergy
#14
Valeria D'Argenio, Valentina Del Monaco, Lorella Paparo, Fatima Domenica Elisa De Palma, Rita Nocerino, Francesca D'Alessio, Feliciano Visconte, Valentina Discepolo, Luigi Del Vecchio, Francesco Salvatore, Roberto Berni Canani
BACKGROUND: Cow's milk allergy (CMA) is one of the most common food allergies in children. Epigenetic mechanisms have been suggested to play a role in CMA pathogenesis. We shown that DNA methylation of Th1/Th2 cytokine genes and FoxP3 affects CMA disease course. Preliminary evidence suggest that also the miRNome could be implicated in the pathogenesis of allergy. Main study outcome was to comparatively evaluate miRNome in children with CMA and in healthy controls. METHODS: Peripheral blood mononuclear cells were obtained from children aged 4-18 months: 10 CMA patients, 9 CMA patients who outgrew CMA, and 11 healthy controls...
August 30, 2017: Allergy
https://www.readbyqxmd.com/read/28846158/different-expression-patterns-of-plasma-th1-th2-th17-and-th22-related-cytokines-correlate-with-serum-autoreactivity-and-allergen-sensitivity-in-chronic-spontaneous-urticaria
#15
Q Chen, H Zhong, W C Chen, Z Zhai, Z Zhou, Z Song, F Hao
BACKGROUND: Clinical features and basophil activation levels correlate with serum autoreactivity and allergen sensitivity in patients with chronic spontaneous urticaria (CSU). OBJECTIVES: To explore the relationship of the expression patterns of plasma T-helper cell (Th) 1-, Th2-, Th17- and Th22-related cytokines with the serum autoreactivity and the allergen sensitivity in CSU. METHOD: Twenty related cytokines were measured and analysed in 60 patients with CSU, 15 patients with acute urticaria, 10 patients with atopic dermatitis (AD) and 15 healthy persons, respectively...
August 28, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28819104/der-f-31-a-novel-allergen-from-dermatophagoides-farinae-activates-epithelial-cells-and-enhances-lung-resident-group-2-innate-lymphoid-cells
#16
Hui Wang, Jianli Lin, Lu Zeng, Chunyan Ouyang, Pixin Ran, Pingchang Yang, Zhigang Liu
Airway epithelial cell-derived thymic stromal lymphopoietin (TSLP) and IL-33 can enhance lung-resident group 2 innate lymphoid cells (ILC2s), and they play an important role in the development of allergic diseases. This study tests the hypothesis that Der f 31 (Dermatophagoides farinae-31), an allergen, modulates airway epithelial cell functions and increases the frequency of lung ILC2s. Our previous research identified cofilin (Der f 31) as a novel allergen. In this study, we found that recombinant Der f 31 (r-Der f 31) upregulated the expression of co-stimulatory molecules in DCs and promoted Th2-skewed polarization...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818625/the-therapeutic-potential-of-crth2-dp2-beyond-allergy-and-asthma
#17
REVIEW
Katharina Jandl, Akos Heinemann
Prostaglandin (PG) D2 has been in the focus of research for quite a long time, but its biological effects and its roles in human disease are still not fully characterized. When in 2001 a second major PGD2 receptor termed chemoattractant receptor homologue expressed on Th2 cells (CRTH2; alternative name DP2) was discovered, diverse investigations started to shed more light on the complex and often controversial actions of the prostaglandin. With various immunomodulating effects, such as induction of migration, activation, and cytokine release of leukocytes observed both in vivo and in vitro, CRTH2 has emerged as a promising target for the treatment of allergic diseases...
August 14, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28815724/secreted-products-of-fasciola-hepatica-inhibit-the-induction-of-t-cell-responses-that-mediate-allergy
#18
C M Finlay, A M Stefanska, M M Coleman, H Jahns, J P Cassidy, R M McLoughlin, K H G Mills
There is evidence from epidemiology studies of a negative association between infection with helminth parasites and the development of allergy and asthma. Here, we demonstrate that the excretory/secretory products of the helminth Fasciola hepatica (FHES) protected mice against ovalbumin (OVA)-induced allergic asthma when administered at time of allergen sensitization. FHES reduced the accumulation of mucus, eosinophils and lymphocytes into the airways of allergen-challenged mice. Furthermore, FHES treatment suppressed Th2 responses in the airways...
August 16, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28814067/neuro-immune-interactions-in-allergic-diseases-novel-targets-for-therapeutics
#19
Tiphaine Voisin, Amélie Bouvier, Isaac M Chiu
Recent studies have highlighted an emerging role for neuro-immune interactions in mediating allergic diseases. Allergies are caused by an overactive immune response to a foreign antigen. The peripheral sensory and autonomic nervous system densely innervates mucosal barrier tissues including the skin, respiratory tract and gastrointestinal (GI) tract that are exposed to allergens. It is increasingly clear that neurons actively communicate with and regulate the function of mast cells, dendritic cells, eosinophils, Th2 cells and type 2 innate lymphoid cells in allergic inflammation...
June 1, 2017: International Immunology
https://www.readbyqxmd.com/read/28799796/immune-modulation-by-curcumin-the-role-of-interleukin-10
#20
Hamid Mollazadeh, Arrigo F G Cicero, Christopher N Blesso, Matteo Pirro, Muhammed Majeed, Amirhossein Sahebkar
Cytokines are small secreted proteins released by different types of cells with specific effects on cellular signaling and communication via binding to their receptors on the cell surface. IL-10 is known to be a pleiotropic and potent anti-inflammatory and immunosuppressive cytokine that is produced by both innate and adaptive immunity cells including dendritic cells, macrophages, mast cells, natural killer cells, eosinophils, neutrophils, B cells, CD8(+) T cells, and TH1, TH2, and TH17 and regulatory T cells...
August 11, 2017: Critical Reviews in Food Science and Nutrition
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