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Non th2 asthma

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https://www.readbyqxmd.com/read/29781543/prospective-predictors-of-exacerbation-status-in-severe-asthma-over-a-3-year-follow-up
#1
Hirokazu Kimura, Satoshi Konno, Hironi Makita, Natsuko Taniguchi, Kaoruko Shimizu, Masaru Suzuki, Hiroki Kimura, Houman Goudarzi, Yuji Nakamaru, Junya Ono, Shoichiro Ohta, Kenji Izuhara, Yoichi M Ito, Sally E Wenzel, Masaharu Nishimura
BACKGROUND: A predisposition to exacerbations is being recognized as a distinct phenotype with "previous exacerbations" representing the strongest clinical factor associated with future exacerbation. Thus, to identify additional novel biomarkers associated with asthma exacerbations, "past exacerbation status" must be included as a confounding factor. OBJECTIVE: This study aimed to characterize the clinical and biomarker features associated with asthma exacerbations in severe asthma...
May 21, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29758106/sputum-to-serum-hydrogen-sulfide-ratio-as-a-novel-biomarker-of-predicting-future-risks-of-asthma-exacerbation
#2
Yasuhito Suzuki, Junpei Saito, Masami Kikuchi, Manabu Uematsu, Atsuro Fukuhara, Suguru Sato, Mitsuru Munakata
BACKGROUND: Increased level of hydrogen sulfide (H2 S) in sputum is reported to be a new biomarker of neutrophilic airway inflammation in chronic airway disorders. However, the relationship between H2 S and disease activity remains unclear. OBJECTIVE: We investigated whether H2 S levels could vary during different conditions in asthma. METHOD: H2 S levels in sputum and serum were measured using a sulfide-sensitive electrode in 47 stable asthmatic subjects (S-BA), 21 uncontrolled asthmatic subjects (UC-BA), 26 asthmatic subjects with acute exacerbation (AE-BA), and 15 healthy subjects...
May 14, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29755960/long-sun-exposures-influencing-high-sub-cutaneous-synthesis-of-vitamin-d3-may-be-associated-with-exacerbation-of-symptoms-in-allergic-asthma
#3
L G D'Cruz, S A Husain, T Wells, C Morgan, P J Stanczyk, A Satgunarajah, J Kashir, B L Calver, L M Blayney, F A Lai
Objectives: Does excessive sun-exposure, non-use of sunscreen and/or high doses of vitamin-D3 supplements provoke exacerbation of asthma? Design: Clinical examinations, retrospective records-access and questionnaire surveys were distributed to a convenience sample of allergic-asthma patient (n=183). Setting: Patients (19-89 years) attending the outpatient respiratory clinics at Maidstone Hospital were enrolled. Results: 90...
March 26, 2018: Journal of Aging Research & Clinical Practice
https://www.readbyqxmd.com/read/29755469/urinary-peptides-as-a-novel-source-of-t-cell-allergen-epitopes
#4
Ricardo da Silva Antunes, John Pham, Curtis McMurtrey, William H Hildebrand, Elizabeth Phillips, Simon Mallal, John Sidney, Paula Busse, Bjoern Peters, Véronique Schulten, Alessandro Sette
Mouse allergy in both laboratory workers and in inner-city children is associated with allergic rhinitis and asthma, posing a serious public health concern. Urine is a major source of mouse allergens, as mice spray urine onto their surroundings, where the proteins dry up and become airborne on dust particles. Here, we tested whether oligopeptides that are abundant in mouse urine may contribute to mouse allergic T cell response. Over 1,300 distinct oligopeptides were detected by mass spectrometry analysis of the low molecular weight filtrate fraction of mouse urine (LoMo)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29747740/auraptene-regulates-th-1-th-2-t-reg-balances-nf-%C3%AE%C2%BAb-nuclear-localization-and-nitric-oxide-production-in-normal-and-th-2-provoked-situations-in-human-isolated-lymphocytes
#5
Vahid Reza Askari, Vafa Baradaran Rahimi, Seyed Abdolrahim Rezaee, Mohammad Hossein Boskabady
BACKGROUND: Auraptene as member of dietary coumarins, is found in citrus fruits. Former studies have demonstrated its anti-inflammatory and anti-cancer activity. PURPOSE: The mechanism of action and immune-modulatory property of this compound on human lymphocytes are greatly unknown. STUDY DESIGN/METHODS: The effect of three concentrations (10, 30 and 90 µM) of auraptene or dexamethasone (0.1 mM) were evaluated on percentage of cell proliferation and nitric oxide (NO) production as well as secretion and gene expression of cytokines, and NF-κB level in PHA-stimulated and non-stimulated lymphocytes...
April 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29569388/antigen-specific-airway-il-33-production-depends-on-fc%C3%AE-r-mediated-incorporation-of-the-antigen-by-alveolar-macrophages-in-sensitized-mice
#6
Takeshi Nabe, Masaya Matsuda, Tomoki Ishida, Nau Tsujimoto, Hitomi Kido, Haruna Kanaya, Hiromu Takahashi, Naoki Takemoto, Miku Nomura, Keiichi Ishihara, Satoshi Akiba, Nobuaki Mizutani
Although interleukin (IL)-33 is a candidate for the aggravation of asthma, the mechanisms underlying antigen-specific IL-33 production in the lung are unclear. Therefore, we analyzed the mechanisms in mice. Intratracheal administration of ovalbumin (OVA) evoked increases in IL-33 and IL-33 mRNA in the lungs of both non-sensitized and OVA-sensitized mice, and the increases in the sensitized mice were significantly higher than in the non-sensitized mice. However, intratracheal administration of bovine serum albumin (BSA) did not increase the IL-33 level in the OVA-sensitized mice...
March 22, 2018: Immunology
https://www.readbyqxmd.com/read/29483774/mixed-th2-and-non-th2-inflammatory-pattern-in-the-asthma-copd-overlap-a-network-approach
#7
Luis Pérez de Llano, Borja G Cosío, Amanda Iglesias, Natividad de Las Cuevas, Juan Jose Soler-Cataluña, Jose Luis Izquierdo, Jose Luis López-Campos, Carmen Calero, Vicente Plaza, Marc Miravitlles, Alfons Torrego, Eva Martinez-Moragon, Joan B Soriano, Antolin Lopez Viña, Irina Bobolea
Introduction: The asthma-chronic obstructive pulmonary disease (COPD) overlap (ACO) is a clinical condition that combines features of those two diseases, and that is difficult to define due to the lack of understanding of the underlying mechanisms. Determining systemic mediators may help clarify the nature of inflammation in patients with ACO. Objectives: We aimed at investigating the role and interaction of common markers of systemic inflammation (IL-6, IL-8, and tumor necrosis factor-α), Th2-related markers (periostin, IL-5, and IL-13), and IL-17 in asthma, COPD, and ACO...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29454096/jak-stat-inhibitors-and-other-small-molecule-cytokine-antagonists-for-the-treatment-of-allergic-disease
#8
REVIEW
Michael D Howell, Carolyn Fitzsimons, Paul A Smith
OBJECTIVE: To provide an overview of janus kinase (JAK), chemoattractant receptor homologous molecule expressed on TH 2 cells (CRTH2), and phosphodiesterase 4 (PDE4) inhibitors in allergic disorders. DATA SOURCES: PubMed literature review. STUDY SELECTIONS: Articles included in this review discuss the emerging mechanism of action of small molecule inhibitors and their use in the treatment of atopic dermatitis (AD), asthma, and allergic rhinitis (AR)...
April 2018: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29445292/late-onset-asthma-current-perspectives
#9
REVIEW
Tsunahiko Hirano, Kazuto Matsunaga
Because the pathophysiology of asthma has diverse characteristics, to manage the disease effectively, it is important for clinicians to distinguish among the clinical phenotypes. Among them, adult-onset asthma, that is, late-onset asthma (LOA), is increasing because of the aging of the population. The phenotype of LOA is largely divided into two types according to the presence or absence of eosinophilic inflammation, T-helper (Th)2- and non-Th2-associated LOA. Especially in Th2 LOA related to rhinosinusitis, as pulmonary function at onset is poor and asthma exacerbations occur frequently, it is important to detect this phenotype in the early phase by using a biomarker of Th2-type inflammation such as fractional exhaled nitric oxide (FENO )...
2018: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/29427986/airway-inflammation-and-inflammatory-biomarkers
#10
Hui Fang Lim, Parameswaran Nair
Severe asthma is a complex disease consisting of different endotypes with different inflammatory and clinicopathological characteristics due to the heterogeneity of immune responses and smooth muscle dysfunction. There is an unmet clinical need to develop and to validate biomarkers that can differentiate between the asthma endotypes and guide clinical management, particularly since the availability of biologicals directed against T2 cytokines. The presence of a "Th2 endotype" is currently assessed in clinical practice using markers, such as eosinophil count in sputum or blood, fraction of exhaled nitric oxide, and immunoglobulin E...
February 2018: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29355679/efficacy-and-safety-of-dupilumab-in-perennial-allergic-rhinitis-and-comorbid-asthma
#11
Steven F Weinstein, Rohit Katial, Shyamalie Jayawardena, Gianluca Pirozzi, Heribert Staudinger, Laurent Eckert, Vijay N Joish, Nikhil Amin, Jaman Maroni, Paul Rowe, Neil M H Graham, Ariel Teper
BACKGROUND: Dupilumab, an anti-IL-4 receptor α mAb, inhibits IL-4/IL-13 signaling, key drivers of type 2/TH 2 immune diseases (eg, atopic/allergic disease). In a pivotal, phase 2b study (NCT01854047), dupilumab reduced severe exacerbations, improved lung function and quality of life, and was generally well tolerated in patients with uncontrolled persistent asthma despite using medium-to-high-dose inhaled corticosteroids plus long-acting β2-agonists. OBJECTIVE: To examine dupilumab's effect on the 22-item Sino-Nasal Outcome Test (SNOT-22) total score and its allergic rhinitis (AR)-associated items in asthma patients with comorbid perennial allergic rhinitis (PAR)...
January 31, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29328030/modern-approaches-to-fractional-exhaled-nitric-oxide-as-a-useful-biomarker-for-allergic-asthma-phenotyping-and-management
#12
N Mgaloblishvili, M Gotua
Asthma is a pathologically heterogeneous disease, consisting of several phenotypes. Different types of airway inflammation are the cornerstone feature of this condition. Fraction of nitric oxide in exhaled air (FENO) has been proposed as a noninvasive, specific biomarker for eosinophilic airway inflammation and has been shown to be elevated in patients with allergic asthma phenotype. More recent studies indicate that FeNO identifies T-helper cell type 2 (Th2)-mediated airway inflammation with a high predictive value for identifying inhaled corticosteroid (ICS) responsive airway inflammation...
December 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29320511/application-of-a-phenotypic-drug-discovery-strategy-to-identify-biological-and-chemical-starting-points-for-inhibition-of-tslp-production-in-lung-epithelial-cells
#13
Adelina Orellana, Vicente García-González, Rosa López, Sonia Pascual-Guiral, Estrella Lozoya, Julia Díaz, Daniel Casals, Antolín Barrena, Stephane Paris, Miriam Andrés, Victor Segarra, Dolors Vilella, Rajneesh Malhotra, Paul Eastwood, Anna Planagumà, Montserrat Miralpeix, Arsenio Nueda
Thymic stromal lymphopoietin (TSLP) is a cytokine released by human lung epithelium in response to external insult. Considered as a master switch in T helper 2 lymphocyte (Th2) mediated responses, TSLP is believed to play a key role in allergic diseases including asthma. The aim of this study was to use a phenotypic approach to identify new biological and chemical starting points for inhibition of TSLP production in human bronchial epithelial cells (NHBE), with the objective of reducing Th2-mediated airway inflammation...
2018: PloS One
https://www.readbyqxmd.com/read/29318959/novel-biological-therapies-in-severe-asthma-targeting-the-right-trait
#14
Gilda Varricchi, Giancarlo Marone, Giuseppe Spadaro, Michele Russo, Francescopaolo Granata, Arturo Genovese, Gianni Marone
Asthma is a heterogeneous disease characterized by chronic airway inflammation that results in a wide spectrum of clinical manifestations. Patients with severe asthma represent a substantial share of consumption of healthcare resources and hospitalization. Moreover, these patients are at risk of increased morbidity and mortality. Recently, several phenotypes and endotypes of asthma have been identified. The identification of specific subtypes of asthma is fundamental for optimizing the clinical benefit of novel treatments...
January 9, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29313707/sputum-eosinophilia-and-magnetic-resonance-imaging-ventilation-heterogeneity-in-severe-asthma
#15
Sarah Svenningsen, Rachel L Eddy, Hui Fang Lim, P Gerard Cox, Parameswaran Nair, Grace Parraga
RATIONALE: Inflammation and smooth muscle dysfunction are integral components of severe asthma that contribute to luminal obstruction causing airflow limitation, ventilation heterogeneity, and symptoms. This is important for guiding treatment decisions directed at the inflammatory (e.g., anti-T-helper cell type 2 monoclonal antibodies) and noninflammatory, smooth muscle-mediated (e.g., bronchial thermoplasty) components of severe asthma. OBJECTIVES: To investigate the contribution of eosinophilic bronchitis and smooth muscle dysfunction to magnetic resonance imaging (MRI) ventilation heterogeneity in patients with severe asthma...
April 1, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29306759/il-4-and-serum-amyloid-p-inversely-regulate-fibrocyte-differentiation-by-targeting-store-operated-ca-2-channels
#16
Jin-Nan Zhong, Lan Lan, Yi-Fei Chen, Ge Huang, Guang-Zhen He, Jiong Yang, Ya-Dong Gao
BACKGROUND: Circulating fibrocytes (CFs) have been shown to participate in subepithelial fibrosis of asthma with chronic airflow limitation by acting as an important source of fibroblasts deposited beneath airway epithelia. Serum amyloid P (SAP) is an innate inhibitor of fibrocytes differentiation. Store-operated Ca2+ entry (SOCE) is the major Ca2+ influx of non-excitable cells. In this study, the role of SOCE in the regulation of fibrocytes differentiation and the effects of Th2 cytokine IL-4 and SAP on SOCE of fibrocytes were investigated...
February 2018: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29305916/pkc%C3%AE-%C3%AE-regulates-th17-differentiation-and-house-dust-mite-induced-allergic-airway-inflammation
#17
Yingying Yang, Panpan Dong, Jing Zhao, Wei Zhou, Yonghua Zhou, Yongliang Xu, Congjin Mei, Fukun Guo, Yi Zheng, Jun-Qi Yang
Asthma is a chronic airway inflammation in which Th2 and Th17 cells play critical roles in its pathogenesis. We have reported that atypical protein kinase (PKC) λ/ι is a new regulator for Th2 differentiation and function. However, the role of PKCλ/ι for Th17 cells remains elusive. In this study, we explored the effect of PKCλ/ι on Th17 cells in the context of ex vivo cell culture systems and an in vivo murine model of allergic airway inflammation with the use of activated T cell-specific conditional PKCλ/ι-deficient mice...
March 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29279262/inkt-cells-are-increased-in-children-with-severe-therapy-resistant-asthma
#18
L Antunes, A P Duarte de Souza, P D de Araújo, L A Pinto, M H Jones, R T Stein, P M Pitrez
BACKGROUND: Invariant natural killer T (iNKT) cells play complex functions in the immune system, releasing both Th1 and Th2 cytokines. The role of iNKT cells in human asthma is still controversial and never described in severe therapy-resistant asthma in children. The objective of this work was to analyse iNKT frequency in peripheral blood of children with severe therapy-resistant asthma (STRA), compared to children with milder asthma and healthy controls. METHODS: Children with asthma (n=136) (non-severe and STRA) from a referral centre and healthy controls (n=40) were recruited...
March 2018: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/29274414/low-density-lipoprotein-receptor-related-protein-1-attenuates-house-dust-mite-induced-eosinophilic-airway-inflammation-by-suppressing-dendritic-cell-mediated-adaptive-immune-responses
#19
Amarjit Mishra, Xianglan Yao, Ankit Saxena, Elizabeth M Gordon, Maryann Kaler, Rosemarie A Cuento, Amisha V Barochia, Pradeep K Dagur, J Philip McCoy, Karen J Keeran, Kenneth R Jeffries, Xuan Qu, Zu-Xi Yu, Stewart J Levine
BACKGROUND: Low-density lipoprotein receptor-related protein 1 (LRP-1) is a scavenger receptor that regulates adaptive immunity and inflammation. LRP-1 is not known to modulate the pathogenesis of allergic asthma. OBJECTIVE: We sought to assess whether LRP-1 expression by dendritic cells (DCs) modulates adaptive immune responses in patients with house dust mite (HDM)-induced airways disease. METHODS: LRP-1 expression on peripheral blood DCs was quantified by using flow cytometry...
December 21, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29221262/differences-in-airway-remodeling-and-airway-inflammation-among-moderate-severe-asthma-clinical-phenotypes
#20
Wen-Jing Ye, Wei-Guo Xu, Xue-Jun Guo, Feng-Feng Han, Juan Peng, Xiao-Ming Li, Wen-Bin Guan, Li-Wei Yu, Jin-Yuan Sun, Zhi-Lei Cui, Lin Song, Yue Zhang, Yan-Min Wang, Tian-Yun Yang, Xia-Hui Ge, Di Yao, Song Liu
Background: To identify asthma clinical phenotypes using cluster analysis and improve our understanding of heterogeneity in asthma. Methods: Clustering approaches were applied to 203 patients who were diagnosed with asthma in XinHua Hospital (January 2012 to December 2015). One hundred and twenty patients underwent multi-slice spiral computed tomography (MSCT) examination and 30 underwent bronchial mucosal biopsy for evaluation of airway remodeling and airway inflammation among the phenotypes...
September 2017: Journal of Thoracic Disease
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