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Th2- type allergic diseases

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https://www.readbyqxmd.com/read/29150715/interleukin-33-promotes-helper-t-cell-type-2-17-inflammation-in-children-with-allergic-rhinitis
#1
Yuanming Wang, Chuling Li, Xianglin Luo, Deyu Xu, Yaxiong Xu, Guanquan Li, Fang Liao, Shujuan Tan
OBJECTIVES: Interleukin-33 is a recently described cytokine which involved in helper T cell type-2 (Th2) mediated diseases. However, its regulatory effect in the pathogenesis of children allergic rhinitis (AR) needs to be further characterized. This study aims to evaluate the expression and role of IL-33 in children with AR. METHODS: Forty children with AR and twenty normal controls were included. IL-33 and Th cytokine production in serum and nasal lavage was examined by immunosorbent assay (ELISA), respectively...
November 17, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29124321/vaccine-responses-in-newborns
#2
REVIEW
Anja Saso, Beate Kampmann
Immunisation of the newborn represents a key global strategy in overcoming morbidity and mortality due to infection in early life. Potential limitations, however, include poor immunogenicity, safety concerns and the development of tolerogenicity or hypo-responsiveness to either the same antigen and/or concomitant antigens administered at birth or in the subsequent months. Furthermore, the neonatal immunological milieu is polarised towards Th2-type immunity with dampening of Th1-type responses and impaired humoral immunity, resulting in qualitatively and quantitatively poorer antibody responses compared to older infants...
November 9, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/29104649/small-interfering-rna-directed-against-microrna-155-delivered-by-a-lentiviral-vector-attenuates-asthmatic-features-in-a-mouse-model-of-allergic-asthma
#3
Huilong Chen, Xiangqin Xu, Sheng Cheng, Yuzhu Xu, Qi Xuefei, Yong Cao, Jungang Xie, Cong-Yi Wang, Yongjian Xu, Weining Xiong
Asthma is a chronic T helper type 2 (Th2) cell-mediated inflammatory disease characterized by airway hyperresponsiveness (AHR) and airway inflammation. Although the majority of patients with asthma can achieve a good level of control with existing treatments, asthma runs a chronic course and the effectiveness of current treatment is not satisfactory for certain patients. MicroRNAs (miRNAs) are short noncoding RNAs that suppress gene expression at the post-transcriptional level; their role in regulating allergic inflammation remains largely unknown...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29068539/eosinophil-persistence-in-vivo-and-sustained-viability-ex-vivo-in-response-to-respiratory-challenge-with-fungal-allergens
#4
Wendy E Geslewitz, Caroline M Percopo, Helene F Rosenberg
BACKGROUND: Eosinophils are immunomodulatory leukocytes that contribute to the pathogenesis of Th2 driven asthma and allergic lung diseases. OBJECTIVE: Our goal was to identify unique properties of eosinophils recruited to the lungs and airways of mice in response to challenge with asthma-associated fungal allergens. METHODS: Mice were challenged intranasally on days 0, 3 and 6 with a filtrate of Alternaria alternata. Recruited eosinophils were enumerated in bronchoalveolar lavage fluid...
October 25, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29057225/pathogenic-effector-th2-cells-in-allergic-eosinophilic-inflammatory-disease
#5
REVIEW
Alyssa Mitson-Salazar, Calman Prussin
There is an absolute requirement for Th2 cells in the pathogenesis of allergen-driven eosinophil-rich type 2 inflammation. Although Th2 cells are generally regarded as a homogeneous population, in the past decade there has been increasing evidence for a minority subpopulation of IL-5+ Th2 cells that have enhanced effector function. This IL-5+ Th2 subpopulation has been termed pathogenic effector Th2 (peTh2), as it exhibits greater effector function and disease association than conventional Th2 cells. peTh2 cells have a different expression profile, differentially express transcription factors, and preferentially use specific signaling pathways...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29055190/pinocembrin-attenuates-allergic-airway-inflammation-via-inhibition-of-nf-%C3%AE%C2%BAb-pathway-in-mice
#6
Xiaoyan Gu, Qian Zhang, Qiang Du, Hong Shen, Zhenghua Zhu
Pinocembrin, one of the primary flavonoids in propolis, possesses many biological activities, including anti-inflammation, anti-oxidation and immunoregulation. This study aimed to evaluate whether pinocembrin could attenuate ovalbumin (OVA)-induced allergic airway inflammation in mice and to explore the possible mechanism. BALB/c mice sensitized and challenged with OVA were administered intraperitoneally with pinocembrin. Airway inflammation and airway hyperresponsiveness were examined. T-helper type (Th) 2 cytokines in bronchoalveolar lavage fluid (BALF) and OVA-specific immunoglobulin E (IgE) in serum were determined...
October 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29038009/advances-in-mechanisms-of-allergic-disease-in-2016
#7
Marc E Rothenberg, Hirohisa Saito, R Stokes Peebles
This review highlights advances in mechanisms of allergic disease, particularly type 2 innate lymphoid cells; TH2 lymphocytes; eicosanoid regulation of inflammation; extracellular vesicles in allergic responses; IL-33; microbiome properties, especially as they relate to mucosal barrier function; and a series of findings concerning the allergic inflammatory cells eosinophils, basophils, and mast cells. During the last year, mechanistic advances occurred in understanding type 2 innate lymphoid cells, particularly related to their response to ozone, involvement with experimental food allergy responses, and regulation by IL-33...
October 13, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29022093/-seasonal-allergic-conjunctivitis
#8
K Schröder, D Finis, S Meller, M Wagenmann, G Geerling, U Pleyer
Seasonal allergic conjunctivitis (SAC) is a frequent disease, which is often associated with allergic rhinitis and subsequently manifested as allergic rhinoconjunctivitis. In contrast to other types of chronic allergic conjunctivitis, the course of SAC is not sight-threatening. Pathogenetically, the underlying cause of SAC is an immunoglobulin E (IgE) mediated, Th2-driven type 1 hypersensitivity reaction. Clinically it presents with itching, light-red conjunctival injection as well as chemosis that exceeds the extent of conjunctival injection...
November 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28992358/role-of-galectin-3-in-the-pathophysiology-underlying-allergic-lung-inflammation-in-a-timp-1-knockout-model-of-murine-asthma
#9
Manoj J Mammen, Mark F Sands, Elaine Abou-Jaoude, Ravikumar Aalinkeel, Jessica L Reynolds, Neil U Parikh, Umesh Sharma, Stanley A Schwartz, Supriya D Mahajan
Asthma is a chronic inflammatory respiratory disease characterized by airway inflammation, airway hyper-responsiveness and reversible airway obstruction. Understanding the mechanisms that underlie the various endotypes of asthma could lead to novel and more personalized therapies for individuals with asthma. Utilizing a Tissue inhibitors of metalloproteinase-1 (TIMP-1) knockout murine allergic asthma model, we previously showed that Tissue inhibitors of metalloproteinase-1 deficiency results in an asthma phenotype, exhibiting airway hyperreactivity, enhanced eosinophilic inflammation, and TH2 cytokine gene and protein expression following sensitization with ovalbumin...
October 9, 2017: Immunology
https://www.readbyqxmd.com/read/28972901/maternal-exposure-to-environmental-dehp-exacerbated-ova-induced-asthmatic-responses-in-rat-offspring
#10
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...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28959799/cytokine-and-lipid-mediator-regulation-of-group-2-innate-lymphoid-cells-ilc2s-in-human-allergic-airway-disease
#11
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/28935613/maternal-exposure-of-balb-c-mice-to-indoor-no2-and-allergic-asthma-syndrome-in-offspring-at-adulthood-with-evaluation-of-dna-methylation-associated-th2-polarization
#12
Huifeng Yue, Wei Yan, Xiaotong Ji, Rui Gao, Juan Ma, Ziyu Rao, Guangke Li, Nan Sang
BACKGROUND: Fetal stress has been proposed to be associated with diseases in both children and adults. Epidemiological studies suggest that maternal exposure to nitrogen dioxide (NO2) contributes to increased morbidity and mortality of offspring with allergic asthma later in life. OBJECTIVES: We aimed to test whether maternal NO2 exposure causes allergic asthma-related consequences in offspring absent any subsequent lung provocation and whether this exposure enhances the likelihood of developing allergic asthma or the intensity of developed allergic airway disease following postnatal allergic sensitization and challenge...
September 13, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28927768/synthesis-and-biological-evaluation-of-peptide-derived-tslp-inhibitors
#13
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...
October 15, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28919220/peucedanum-japonicum-extract-attenuates-allergic-airway-inflammation-by-inhibiting-th2-cell-activation-and-production-of-pro-inflammatory-mediators
#14
Jin Mi Chun, A Reum Lee, Hyo Seon Kim, A Yeong Lee, Gyo Jeong Gu, Byeong Cheol Moon, Bo-In Kwon
ETHNOPHARMACOLOGICAL RELEVANCE: The root of Peucedanum japonicum Thunberg is traditionally used to treat coughs, colds, headache and inflammatory diseases in Korea and Japan. Its effects on allergic lung inflammation have not been investigated. AIM OF THE STUDY: To investigate the anti-asthmatic effects of Peucedanum japonicum extract (PJE) using a murine model of asthma and a lipopolysaccharide (LPS)-stimulated macrophage cell line. MATERIALS AND METHODS: Mice underwent two rounds of sensitization with ovalbumin 1 week apart followed by four intranasal ovalbumin challenges on days 13-16...
January 30, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28912020/intestinal-dysbiosis-featuring-abundance-of-ruminococcus-gnavus-associates-with-allergic-diseases-in-infants
#15
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/28895020/role-of-type-2-innate-lymphoid-cells-in-allergic-diseases
#16
REVIEW
Lorenzo Cosmi, Francesco Liotta, Laura Maggi, Francesco Annunziato
PURPOSE OF REVIEW: The adaptive immune response orchestrated by type 2 T helper (Th2) lymphocytes, strictly cooperates with the innate response of group 2 innate lymphoid cells (ILC2), in the protection from helminths infection, as well as in the pathogenesis of allergic disease. The aim of this review is to explore the pathogenic role of ILC2 in different type 2-mediated disorders. RECENT FINDINGS: Recent studies have shown that epithelial cell-derived cytokines and their responding cells, ILC2, play a pathogenic role in bronchial asthma, chronic rhinosinusitis, and atopic dermatitis...
September 11, 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28867182/deficiency-of-klf4-compromises-the-lung-function-in-an-acute-mouse-model-of-allergic-asthma
#17
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/28863235/therapeutic-potential-of-%C3%AE-lipoic-acid-derivative-sodium-zinc-histidine-dithiooctanamide-in-a-mouse-model-of-allergic-rhinitis
#18
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/28862768/airway-remodelling-and-inflammation-in-asthma-are-dependent-on-the-extracellular-matrix-protein-fibulin-1c
#19
Gang Liu, Marion A Cooley, Prema M Nair, Chantal Donovan, Alan C Hsu, Andrew G Jarnicki, Tatt Jhong Haw, Nicole G Hansbro, Qi Ge, Alexandra C Brown, Hock Tay, Paul S Foster, Peter A Wark, Jay C Horvat, Jane E Bourke, Chris L Grainge, W Scott Argraves, Brian G Oliver, Darryl A Knight, Janette K Burgess, Philip M Hansbro
Asthma is a chronic inflammatory disease of the airways. It is characterised by allergic airway inflammation, remodelling and hyperresponsiveness (AHR). Asthma patients, in particular those with chronic or severe asthma, have airway remodelling that is associated with the accumulation of extracellular matrix (ECM) proteins, such as collagens. Fibulin-1 (Fbln1) is an important ECM protein that stabilises collagen and other ECM proteins. Fbln1c, one of the four Fbln1 variants, which predominates in both humans and mice, is increased in the serum and airways fluids in asthma but its function is unclear...
September 1, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28830802/impact-of-vitamin-d-deficiency-on-increased-blood-eosinophil-counts
#20
João Tadeu Damian Souto Filho, Alícia Souza de Andrade, Felipe Mesquita Ribeiro, Paola de Araujo Sardenberg Alves, Virgínia Ribeiro Fernandes Simonini
OBJECTIVE/BACKGROUND: Vitamin D has been increasingly recognized as an immunomodulatory agent. Its deficiency has been associated with immune-mediated diseases such as asthma, rhinitis, and atopic dermatitis. These allergic conditions are dependent on T-helper type 2 (Th2) cells secreting interleukins, overproduction of immunoglobulin E (IgE), and eosinophil activation. We investigated the association between serum vitamin D levels and blood absolute eosinophil count. METHODS: We carried out a cross-sectional study of 669 men and women referred to a clinical pathology laboratory who underwent 25-hydroxyvitamin D testing and complete blood count analysis on the same day...
August 16, 2017: Hematology/oncology and Stem Cell Therapy
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