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https://www.readbyqxmd.com/read/28318886/airway-inflammation-phenotype-prediction-in-asthma-patients-using-lung-sound-analysis-with-fractional-exhaled-nitric-oxide
#1
Terufumi Shimoda, Yasushi Obase, Yukio Nagasaka, Hiroshi Nakano, Reiko Kishikawa, Tomoaki Iwanaga
BACKGROUND: We previously reported the results of lung sound analysis in patients with bronchial asthma and demonstrated that the exhalation-to-inhalation sound pressure ratio in the low frequency range between 100 and 200 Hz (E/I LF) was correlated with the presence of airway inflammation and airway obstruction. We classified asthma patients by airway inflammation phenotype using the induced sputum eosinophil and neutrophil ratio and determined whether this phenotype could be predicted using E/I LF and fractional exhaled nitric oxide values...
March 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28297811/-analysis-of-short-term-respiratory-adverse-events-in-183-bronchial-thermoplasty-procedures
#2
Y Nong, J T Lin, N Su, X Chen, Q Zhao, C Y Han, R F Qiu
Objective: To analyze the short-term (3 weeks) adverse respiratory events after bronchial thermoplasty(BT) in patients with severe asthma. Methods: The China-Japan Friendship Hospital recruited 62 patients with severe asthma for BT treatment from March 2014 to July 2016, with a total of 183 BT procedures. The data of adverse respiratory events within 3 weeks after procedure were collected to analyze the factors that might potentially influence the occurrence of adverse events. Results: Forty-three patients (69...
March 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28286155/diagnostic-accuracy-of-inflammatory-markers-for-diagnosing-occupational-asthma
#3
Geneviève Racine, Roberto Castano, André Cartier, Catherine Lemiere
BACKGROUND: The assessment of airway responsiveness and inflammation is key to the investigation of occupational asthma (OA). OBJECTIVE: We sought to assess and compare the diagnostic accuracies of the blood and sputum eosinophil counts and the methacholine challenge for the diagnosis of OA. METHODS: We conducted a retrospective study assessing 618 patients who underwent specific inhalation challenges (SICs) for symptoms suggestive of OA between 2000 and 2015...
March 9, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28275474/effects-of-leukotriene-d4-nasal-challenge-on-bronchial-responsiveness-and-inflammation-in-asthmatic-patients-with-allergic-rhinitis
#4
Zheng Zhu, Yanqing Xie, Weijie Guan, Yi Gao, Rongquan Huang, Shu Xia, Wenhua Jian, Zhiyu Liang, Jinping Zheng
BACKGROUND: In asthmatic patients with allergic rhinitis (AR), increased cysteinyl leukotrienes (CysLTs) production in the secretion of nasal mucosa has been associated with greater bronchial hyperresponsiveness (BHR) after nasal allergen challenge. However, the role of CysLTs in eliciting BHR after nasal allergen challenge has not been evaluated. The aim of this study is to evaluate the effect of LTD4 nasal challenge on BHR and inflammation in asthmatic patients with AR. METHODS: In this self-controlled study, fifteen eligible consecutively recruited subjects underwent methacholine (Mch) bronchial provocation test before and 30 minutes after LTD4 nasal provocation test...
February 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28260873/chronic-rhinosinusitis-is-associated-with-higher-prevalence-and-severity-of-bronchiectasis-in-patients-with-copd
#5
Xia Yang, Yali Xu, Jianmin Jin, Ruimin Li, Xiaofang Liu, Yongchang Sun
BACKGROUND AND PURPOSE: Bronchiectasis revealed by high-resolution computed tomography (HRCT) is common in chronic obstructive pulmonary disease (COPD), but the causes and risk factors remain to be determined. Chronic rhinosinusitis (CRS) is closely associated with bronchiectasis or COPD, but whether it is associated with comorbid bronchiectasis in COPD (COPD-Bx) is unknown. PATIENTS AND METHODS: Patients with stable COPD were enrolled consecutively and evaluated for the presence of CRS by questionnaire and paranasal sinus computed tomography...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28258374/polymorphism-4g-5g-of-the-plasminogen-activator-inhibitor-1-gene-as-a-risk-factor-for-the-development-of-allergic-rhinitis-symptoms-in-patients-with-asthma
#6
Marina Lampalo, Irena Jukic, Jasna Bingulac-Popovic, Ivona Marunica, Roberta Petlevski, Gordana Pavlisa, Sanja Popovic-Grle
Plasminogen activator inhibitor-1 (PAI-1) is a glycoprotein which has a role in tissue remodelling after inflammatory processes. The objective is to investigate the frequency of PAI-1 gene polymorphism (4G/5G) in patients with a lung ventilation dysfunction in asthma and allergic rhinitis. Genomic DNA was isolated and genotypes of polymorphism of PAI-1 4G/5G and ABO were determined using the methods of RT-PCR and PCR-SSP. Study group includes 145 adult patients diagnosed with chronic asthma, with all clinically relevant parameters and the laboratory markers of pO2, IgE and eosinophils in sputum and nasal swab...
March 3, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28248547/serum-periostin-as-a-biomarker-for-comorbid-chronic-rhinosinusitis-in-patients-with-asthma
#7
Takamitsu Asano, Yoshihiro Kanemitsu, Masaya Takemura, Makoto Yokota, Kensuke Fukumitsu, Norihisa Takeda, Hiroya Ichikawa, Takehiro Uemura, Osamu Takakuwa, Hirotsugu Ohkubo, Ken Maeno, Yutaka Ito, Tetsuya Oguri, Yumi Maki, Junya Ono, Shoichiro Ohta, Yoshihisa Nakamura, Kenji Izuhara, Motohiko Suzuki, Akio Niimi
RATIONALE: Periostin is a matricellular protein that is involved in the pathophysiology of allergic rhinitis, chronic rhinosinusitis, and asthma. Associations of serum periostin with systemic and airway eosinophilic inflammation and comorbid chronic rhinosinusitis in patients with asthma have been demonstrated. Although serum periostin is positioned as a marker of helper T cell 2 (Th2) immune responses, its implication regarding the presence of comorbid upper airway diseases in patients with asthma remains unclear...
March 1, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28248008/can-biomarkers-help-us-hit-targets-in-difficult-to-treat-asthma
#8
REVIEW
Michael Fricker, Liam G Heaney, John W Upham
Biomarkers may be a key foundation for the precision medicine of the future. In this article, we review current knowledge regarding biomarkers in difficult-to-treat asthma and their ability to guide the use of both conventional asthma therapies and novel (targeted) therapies. Biomarkers (as measured by tests including prednisolone and cortisol assays and the fractional exhaled nitric oxide (NO) suppression test) show promise in the assessment and management of non-adherence to inhaled and oral corticosteroids...
April 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28243078/a-belgian-survey-on-the-diagnosis-of-asthma-copd-overlap-syndrome
#9
Didier Cataldo, Jean-Louis Corhay, Eric Derom, Renaud Louis, Eric Marchand, Alain Michils, Vincent Ninane, Rudi Peché, Charles Pilette, Walter Vincken, Wim Janssens
INTRODUCTION: Patients with chronic airway disease may present features of both asthma and COPD, commonly referred to as asthma-COPD overlap syndrome (ACOS). Recommendations on their diagnosis are diffuse and inconsistent. This survey aimed to identify consensus on criteria for diagnosing ACOS. METHODS: A Belgian expert panel developed a survey on ACOS diagnosis, which was completed by 87 pulmonologists. Answers chosen by ≥70% of survey respondents were considered as useful criteria for ACOS diagnosis...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28238403/increased-sputum-levels-of-thymus-and-activation-regulated-chemokine-in-children-with-asthma-not-eosinophilic-bronchitis
#10
M J Kim, H S Lee, I S Sol, M N Kim, J Y Hong, K E Lee, Y H Kim, K W Kim, M H Sohn, K-E Kim
BACKGROUND: Thymus and activation-regulated chemokine (TARC), a member of the CC chemokine family, plays a crucial role in Th2-specific inflammation. We aimed to determine the concentration of sputum TARC in children with asthma and eosinophilic bronchitis (EB) and its relation with eosinophilic inflammation, pulmonary function, and bronchial hyper-responsiveness. METHODS: In total, 90 children with asthma, 38 with EB, and 45 control subjects were enrolled. TARC levels were measured in sputum supernatants using an ELISA...
February 18, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28179442/t-helper-cell-type-2-th2-and-non-th2-molecular-phenotypes-of-asthma-using-sputum-transcriptomics-in-u-biopred
#11
Chih-Hsi Scott Kuo, Stelios Pavlidis, Matthew Loza, Fred Baribaud, Anthony Rowe, Iaonnis Pandis, Ana Sousa, Julie Corfield, Ratko Djukanovic, Rene Lutter, Peter J Sterk, Charles Auffray, Yike Guo, Ian M Adcock, Kian Fan Chung
Asthma is characterised by heterogeneous clinical phenotypes. Our objective was to determine molecular phenotypes of asthma by analysing sputum cell transcriptomics from 104 moderate-to-severe asthmatic subjects and 16 nonasthmatic subjects.After filtering on the differentially expressed genes between eosinophil- and noneosinophil-associated sputum inflammation, we used unbiased hierarchical clustering on 508 differentially expressed genes and gene set variation analysis of specific gene sets.We defined three transcriptome-associated clusters (TACs): TAC1 (characterised by immune receptors IL33R, CCR3 and TSLPR), TAC2 (characterised by interferon-, tumour necrosis factor-α- and inflammasome-associated genes) and TAC3 (characterised by genes of metabolic pathways, ubiquitination and mitochondrial function)...
February 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28178340/sputum-biomarkers-in-ipf-evidence-for-raised-gene-expression-and-protein-level-of-igfbp-2-il-8-and-mmp-7
#12
J Guiot, M Henket, J L Corhay, C Moermans, R Louis
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a rare lung disease of unknown origin leading rapidly to death. This paper addresses the issue of whether sputum induction is a suitable tool to study respiratory tract inflammation and potential biomarkers in IPF compared to COPD, a fibrosing airway wall disease. METHODS: In a cross-sectional analysis, 15 IPF patients, 32 COPD and 30 healthy subjects underwent sputum induction. Total sputum cell counts and the amount of TGF- β, IGF-1, IGF-2, IGFBP-1, IGFBP-2, IGFBP-3, IL-8, IL-13, MMP-7, MMP-9, YKL-40, TNF-α and KL-6 in sputum supernatant were analysed...
2017: PloS One
https://www.readbyqxmd.com/read/28161533/prevalence-determinants-and-clinical-correlates-of-vitamin-d-deficiency-in-patients-with-chronic-obstructive-pulmonary-disease-in-london-uk
#13
David A Jolliffe, Wai Yee James, Richard L Hooper, Neil C Barnes, Claire L Greiller, Kamrul Islam, Angshu Bhowmik, Peter M Timms, Raj K Rajakulasingam, Aklak B Choudhury, David E Simcock, Elina Hyppönen, Robert T Walton, Christopher J Corrigan, Christopher J Griffiths, Adrian R Martineau
Vitamin D deficiency is common in patients with chronic obstructive pulmonary disease (COPD), yet a comprehensive analysis of environmental and genetic determinants of serum 25-hydroxyvitamin D (25[OH]D) concentration in patients with this condition is lacking. We conducted a multi-centre cross-sectional study in 278 COPD patients aged 41-92 years in London, UK. Details of potential environmental determinants of vitamin D status and COPD symptom control and severity were collected by questionnaire, and blood samples were taken for analysis of serum 25(OH)D concentration and DNA extraction...
February 1, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28154802/the-transition-of-sputum-inflammatory-cell-profiles-is-variable-in-stable-asthma-patients
#14
Bomi Shin, Hyouk-Soo Kwon, So Young Park, Tae-Bum Kim, Hee-Bom Moon, You Sook Cho
BACKGROUND: The sputum inflammatory cell profile is an important indicator for classifying asthma phenotypes. OBJECTIVE: To investigate if sputum inflammatory cell profile remains stable and there are different characteristics between groups that show different profile over time in stable asthmatic patients. METHODS: A total of 149 asthmatic patients, who were clinically stable at the time of sputum examination and had undergone sputum analysis twice, were subjected to a detailed review...
January 2017: Asia Pacific Allergy
https://www.readbyqxmd.com/read/28145647/relationship-between-fractional-exhaled-nitric-oxide-level-and-efficacy-of-inhaled-corticosteroid-in-asthma-copd-overlap-syndrome-patients-with-different-disease-severity
#15
Jia Xi Feng, Yun Lin, Jian Lin, Su Su He, Mei Fang Chen, Xiao Mai Wu, You Zu Xu
This study explored the relationship between the fractional exhaled nitric oxide (FeNO) level and the efficacy of inhaled corticosteroid (ICS) in asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) patients with different disease severity. A total of 127 ACOS patients with ACOS (case group) and 131 healthy people (control group) were enrolled in this study. Based on the severity of COPD, the ACOS patients were divided into: mild ACOS; moderate ACOS; severe ACOS; and extremely severe ACOS groups...
March 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28137494/characteristics-associated-with-clinical-severity-and-inflammatory-phenotype-of-naturally-occurring-virus-induced-exacerbations-of-asthma-in-adults
#16
Asger Bjerregaard, Ingrid A Laing, Nadia Poulsen, Vibeke Backer, Asger Sverrild, Markus Fally, Siew-Kim Khoo, Lucy Barrett, Svetlana Baltic, Philip J Thompson, Glenys Chidlow, Chisha Sikazwe, David W Smith, Yury A Bochkov, Peter Le Souëf, Celeste Porsbjerg
BACKGROUND: In experimental studies viral infections have been shown to induce type 2 inflammation in asthmatics, but whether this is a feature of naturally occurring virus-induced asthma exacerbations is unknown. Thymic stromal lymphopoietin (TSLP) released from the airway epithelium in response to damage, has been suggested as a link between viral infection and type 2 inflammation, but the role of TSLP in asthma exacerbations is unknown. OBJECTIVE: To assess whether type 2 inflammation, as measured by sputum eosinophils and fractional exhaled nitric oxide (FeNO), is a feature of naturally occurring virus-induced exacerbations of asthma and whether TSLP is associated with this type 2 inflammation...
February 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28070196/airway-autoimmune-responses-in-severe-eosinophilic-asthma-following-low-dose-mepolizumab-therapy
#17
Manali Mukherjee, Hui Fang Lim, Sruthi Thomas, Douglas Miller, Melanie Kjarsgaard, Bruce Tan, Roma Sehmi, Nader Khalidi, Parameswaran Nair
BACKGROUND: Anti-interleukin (IL)-5 monoclonal antibodies as an eosinophil-depleting strategy is well established, with Mepolizumab being the first biologic approved as an adjunct treatment for severe eosinophilic asthma. CASE PRESENTATION: A 62-year old woman diagnosed with severe eosinophilic asthma showed poor response to Mepolizumab therapy (100 mg subcutaneous dose/monthly) and subsequent worsening of symptoms. The treatment response to Mepolizumab was monitored using both blood and sputum eosinophil counts...
2017: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/28069248/race-is-associated-with-differences-in-airway-inflammation-in-patients-with-asthma
#18
Sharmilee M Nyenhuis, Jerry A Krishnan, Alalia Berry, William J Calhoun, Vernon M Chinchilli, Linda Engle, Nicole Grossman, Fernando Holguin, Elliot Israel, Rick A Kittles, Monica Kraft, Stephen C Lazarus, Erik B Lehman, David T Mauger, James N Moy, Stephen P Peters, Wanda Phipatanakul, Lewis J Smith, Kaharu Sumino, Stanley J Szefler, Michael E Wechsler, Sally Wenzel, Steven R White, Steven J Ackerman
BACKGROUND: African American subjects have a greater burden from asthma compared with white subjects. Whether the pattern of airway inflammation differs between African American and white subjects is unclear. OBJECTIVE: We sought to compare sputum airway inflammatory phenotypes of African American and white subjects treated or not with inhaled corticosteroids (ICSs; ICS+ and ICS-, respectively). METHODS: We performed a secondary analysis of self-identified African American and white subjects with asthma enrolled in clinical trials conducted by the National Heart, Lung, and Blood Institute-sponsored Asthma Clinical Research Network and AsthmaNet...
December 31, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28042058/eosinophilic-airway-inflammation-in-asthma-is-associated-with-an-altered-airway-microbiome
#19
Asger Sverrild, Pia Kiilerich, Asker Brejnrod, Rebecca Pedersen, Celeste Porsbjerg, Anders Bergqvist, Jonas S Erjefält, Karsten Kristiansen, Vibeke Backer
BACKGROUND: Subjects with asthma have higher microbiome diversity, and an altered composition with more Proteobacteria and less Bacteroidetes compared to healthy controls. Studies comparing airway inflammation and airway microbiome are sparse, especially in subjects not on anti-inflammatory treatment. OBJECTIVE: To describe the relationship between the airway microbiome and patterns of airway inflammation in steroid-free subjects with asthma and healthy controls...
December 29, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28036144/revisiting-type-2-high-and-type-2-low-airway-inflammation-in-asthma-current-knowledge-and-therapeutic-implications
#20
REVIEW
D Robinson, M Humbert, R Buhl, A A Cruz, H Inoue, S Korom, N A Hanania, P Nair
Asthma is a complex respiratory disorder characterized by marked heterogeneity in individual patient disease triggers and response to therapy. Several asthma phenotypes have now been identified, each defined by a unique interaction between genetic and environmental factors, including inflammatory, clinical and trigger-related phenotypes. Endotypes further describe the functional or pathophysiologic mechanisms underlying the patient's disease. type 2-driven asthma is an emerging nomenclature for a common subtype of asthma and is characterized by the release of signature cytokines IL-4, IL-5 and IL-13 from cells of both the innate and adaptive immune systems...
February 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
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