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https://www.readbyqxmd.com/read/28328850/measurement-of-exhaled-nitric-oxide-concentration-in-patients-with-obstructive-sleep-apnea-a-meta-analysis
#1
Dongmei Zhang, Jinmei Luo, Yixian Qiao, Yi Xiao, Rong Huang, Xu Zhong
BACKGROUND: Exhaled nitric oxide (eNO) has been proposed as a noninvasive measure of airway inflammation. However, its value in patients with obstructive sleep apnea (OSA) is still controversial. The authors aim to assess the difference in eNO levels between patients with OSA and controls by a meta-analysis. METHODS: A systematic search was performed in the PubMed, EMBASE, the Cochrane Library, and MEDLINE databases to collect relevant studies published from 1996 to 2016...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28318886/airway-inflammation-phenotype-prediction-in-asthma-patients-using-lung-sound-analysis-with-fractional-exhaled-nitric-oxide
#2
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/28301273/a-cross-sectional-study-of-changes-in-markers-of-immunological-effects-and-lung-health-due-to-exposure-to-multi-walled-carbon-nanotubes
#3
Jelle Vlaanderen, Anjoeka Pronk, Nathaniel Rothman, Allan Hildesheim, Debra Silverman, H Dean Hosgood, Suzanne Spaan, Eelco Kuijpers, Lode Godderis, Peter Hoet, Qing Lan, Roel Vermeulen
Background Multi Wall Carbon nanotubes (MWCNTs) are manufactured nanomaterials to which workers and the general population will be increasingly exposed in coming years. Little is known about potential human health effects of exposure to MWCNTs, but effects on the lung and the immune system have been reported in animal and mechanistic studies. Objectives We conducted a cross-sectional study to assess the association between occupational exposure to MWCNTs and effects on lung health and the immune system. Methods We assessed fifty-one immune markers and three pneumoproteins in serum, complete blood cell counts (CBC), fractional exhaled nitric oxide (FENO), and lung function among twenty-two workers of a MWCNT producing facility and thirty-nine age- and gender-matched, unexposed controls...
March 16, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28296234/association-between-fractional-exhaled-nitric-oxide-and-clinical-characteristics-and-outcomes-in-patients-with-subacute-cough
#4
Mingming Jiang, Min Liu, Ying Wang, Lili Xu, Xiaoning Bu, Li An, Hong Zhang, Kewu Huang
OBJECTIVE: To investigate the relationships between fractional exhaled nitric oxide (FENO) and clinical characteristics and outcomes in patients with subacute cough. METHODS: Patients with subacute cough (n = 189) after upper respiratory tract infection were enrolled in this single-center prospective study, and were divided into low- (<25 ppb) and high- (≥25 ppb) FENO groups. Empirical therapies (without inhaled or systemic corticosteroids) were prescribed based on clinical experience and follow-up until the disease course reached 8 weeks...
March 15, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28286341/rapid-adiposity-growth-increases-risks-of-new-onset-asthma-and-airway-inflammation-in-children
#5
Y-C Chen, A-H Chih, J-R Chen, T-H Liou, W-H Pan, Y L Lee
BACKGROUND/OBJECTIVES: We aim to (1) examine the influence of long-term adiposity status/ short-term adiposity changes on asthma with high or low fractional exhaled nitric oxide (FeNO), and (2) to determine the differences in long-term adiposity status/ short-term adiposity changes on atopy, airway inflammation, and pulmonary function. SUBJECTS/METHODS: We recruited 2450 fourth-to-sixth-grade children from the nationwide Taiwan Children Health Study. Data regarding various adiposity indicators, atopic status, pulmonary function tests, and asthma outcomes were collected annually...
March 13, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28284319/longterm-clinical-outcomes-of-omalizumab-therapy-in-severe-allergic-asthma-study-of-efficacy-and-safety
#6
Adel H Mansur, Sapna Srivastava, Verity Mitchell, Julie Sullivan, Ismail Kasujee
Omalizumab has been shown to be an effective add-on therapy for patients with uncontrolled severe persistent allergic asthma. There has been a steady accumulation of evidence on the long-term effectiveness of omalizumab; however, data on real-life outcomes beyond one year of treatment is limited. In this study, we report on long-term outcomes of omalizumab treatment. We collected data from our severe asthma registry on hospitalisations, exacerbations, corticosteroid sparing, asthma control, lung function, biomarkers and side effects, to determine if the benefit was sustained and treatment was safe on the long term...
March 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28282228/evaluation-of-exhaled-breath-temperature-ebt-as-a-marker-and-predictor-of-asthma-exacerbation-in-children-and-adolescents
#7
Irena Wojsyk-Banaszak, Marcin Mikoś, Aleksandra Szczepankiewicz, Alicja Wielebska, Paulina Sobkowiak, Aleksandra Kamińska, Anna Bręborowicz
INTRODUCTION: Noninvasive and easy-to-use tools to monitor airway inflammation in asthma are needed to maintain disease control, particularly in pediatric population. The aim of the study was to evaluate exhaled breath temperature (EBT) in pediatric respiratory clinic setting. METHODS: We evaluated 37 children and adolescents with asthma (5-17 years; median: 11 years). The patients were followed up in stable condition and during exacerbations (paired observations in n = 19 subjects)...
March 10, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28275474/effects-of-leukotriene-d4-nasal-challenge-on-bronchial-responsiveness-and-inflammation-in-asthmatic-patients-with-allergic-rhinitis
#8
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/28265181/comparison-of-the-fractional-exhaled-nitric-oxide-levels-in-adolescents-at-three-schools-located-three-different-distances-from-a-large-steel-mill
#9
Murat Acat, Yusuf Aydemir, Onur Yazıcı, Mahmut Turğut, Mustafa Çörtük, Murat Çakar, Zehra Yaşar, Sami Deniz, Erdoğan Çetinkaya
Objectives. Exposure to ambient metals and air pollutants in urban environments has been associated with impaired lung health and inflammation in the lungs. Fractional exhaled nitric oxide (FeNO) is a reliable marker of airway inflammation. In this study, we aimed to compare the FeNO levels of three schools that have different distances from iron and steel industry zone for assessing the effects of heavy metals and air pollution on their respiratory health. Methods. Pulmonary function test and FeNO measurements were evaluated in 387 adolescents in three schools which have different distance from plant...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28264494/omalizumab-is-equally-effective-in-persistent-allergic-oral-corticosteroid-dependent-asthma-caused-by-either-seasonal-or-perennial-allergens-a-pilot-study
#10
Christian Domingo, Xavier Pomares, Albert Navarro, Núria Rudi, Ana Sogo, Ignacio Dávila, Rosa M Mirapeix
Omalizumab is marketed for chronic severe asthma patients who are allergic to perennial allergens. Our purpose was to investigate whether omalizumab is also effective in persistent severe asthma due to seasonal allergens. Thirty patients with oral corticosteroid-dependent asthma were treated with Omalizumab according to the dosing table. For each patient with asthma due to seasonal allergens, we recruited the next two consecutive patients with asthma due to perennial allergens. The dose of oral methyl prednisolone was tapered at a rate of 2 mg every two weeks after the start of treatment with omalizumab depending on tolerance...
February 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28256388/utility-of-serum-periostin-in-combination-with-exhaled-nitric-oxide-in-the-management-of-asthma
#11
REVIEW
Tadao Nagasaki, Hisako Matsumoto, Kenji Izuhara
Type-2/eosinophilic inflammation plays a pivotal role in asthma. The identification of severe type-2/eosinophilic asthma is important for improving the management of patients with asthma. Therefore, efforts to develop non-invasive biomarkers for type-2/eosinophilic airway inflammation have been made during this decade. Currently, fraction of exhaled nitric oxide (FeNO) and serum periostin levels are considered markers of type-2/eosinophilic inflammation in asthma. However, a single-marker approach has limited the ability to diagnose severe type-2/eosinophilic asthma accurately and predict disease outcomes precisely...
February 27, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28253520/fractional-exhaled-nitric-oxide-a-potential-biomarker-in-allergic-rhinitis
#12
Giorgio Ciprandi, Fabio Gallo, Fabio Luigi Massimo Ricciardolo, Ignazio Cirillo
BACKGROUND: The fractional concentration of exhaled nitric oxide (FeNO) is a surrogate biomarker for Th2-dependent bronchial inflammation. The present study investigated whether FeNO may characterize allergic rhinitis (AR) patients. METHODS: A total of 553 AR patients (497 males, mean age 28.8 years) were evaluated. Those patients with a high FeNO underwent a 2-year follow-up. RESULTS: Increased FeNO was associated with a significantly longer AR duration, impaired lung function, more severe symptoms, and more frequent bronchial hyperresponsiveness (BHR)...
March 3, 2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28248547/serum-periostin-as-a-biomarker-for-comorbid-chronic-rhinosinusitis-in-patients-with-asthma
#13
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/28246306/a-novel-method-of-measuring-fractional-exhaled-nitric-oxide-in-tracheostomized-ventilator-dependent-children
#14
Vydehi R Murthy, Hugo Escobar, Mike Norberg, Charisse I Lachica, Linda L Gratny, Ashley K Sherman, William E Truog, Winston M Manimtim
BACKGROUND: The lower airway concentration of fractional exhaled nitric oxide (FENO) is unknown in children with chronic lung disease of infancy who have tracheostomy for long-term mechanical ventilation. We aimed to evaluate an online method of measuring FENO in a cohort of ventilator-dependent children with a tracheostomy and to explore the relationship between the peak FENO concentration (FENO peak) and the degree of respiratory support using the respiratory severity score. METHODS: We conducted a prospective cross-sectional study in 31 subjects who were receiving long-term respiratory support through a tracheostomy...
February 28, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28236121/impact-of-internal-and-external-factors-on-ebc-ph-and-feno-changes-in-humans-following-challenge-with-ethyl-acrylate
#15
F Hoffmeyer, K Sucker, H Berresheim, C Monsé, B Jettkant, A Beine, M Raulf, J Bünger, T Brüning
Acute effects of ethyl acrylate exposure at 5 ppm for 4 h include changes of pH in exhaled breath condensate (EBC-pH) and exhaled nitric oxide (FeNO). So far, few data have been reported for atopic persons or the impact of the exposure conditions on biomarkers, e.g., constant versus variable application of irritants. Nine atopic and eighteen healthy volunteers without bronchial hyperresponsiveness were exposed for 4 h to ethyl acrylate concentrations of 0.05 ppm (sham), 5 ppm (constant concentration), and 0-10 ppm (variable, mean concentration of 5 ppm) in an exposure laboratory...
February 25, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28220034/exhaled-and-nasal-nitric-oxide-in-relation-to-lung-function-blood-cell-counts-and-disease-characteristics-in-cystic-fibrosis
#16
Christina Krantz, Christer Janson, Annika Hollsing, Kjell Alving, Andrei Malinovschi
BACKGROUND: Patients with cystic fibrosis (CF) have similar or lower exhaled nitric oxide (FeNO) and lower nasal nitric oxide (nNO) levels than controls. There are divergent results on alveolar NO (CalvNO) concentrations in relation to CF. There are inconsistent results on correlation between different nitric oxide parameters and lung function and inflammation in CF. AIM: To compare FeNO, CalvNO and nNO levels between subjects with CF, asthma and healthy controls and to study whether these parameters are related to lung function, blood cell counts or clinical characteristics in CF patients...
March 20, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28219166/-the-value-of-sinonasal-ct-scan-in-diagnosing-of-eosinophilic-chronic-rhinosinusitis-with-nasal-polyps
#17
Y F Meng, H F Lou, C S Wang, L Zhang
Objective: To compare the value of sinonasal CT scan with other clinical parameters in the pre-diagnosis of eosinophilic chronic rhinosinusitis with nasal polyps (eCRSwNP). Methods: From January to May of 2016, One hundred and fifty consecutive CRSwNP patients (90 eCRSwNP and 60 non-eosinophilic CRSwNP) undergoing endoscopic functional sinus surgery in Beijing Tongren Hospital were recruited in this study. Preoperative CT scan, skin prick test (SPT) and oral fractional exhaled nitric oxide (FeNO) measurements were performed in each patient and full blood count with differential analysis was performed within 1 week before surgery...
February 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28216536/the-fraction-of-exhaled-nitric-oxide-feno-and-forced-oscillation-technique-fot-can-predict-bronchial-hyperresponsiveness-against-acetylcholine-in-treated-asthmatics
#18
Masanori Fukuhara, Takahiro Tsuburai, Yuto Nakamura, Yasuhiro Tomita, Yuto Hamada, Kentaro Watai, Hiroaki Hayashi, Yousuke Kamide, Kiyoshi Sekiya, Chihiro Mitsui, Yuma Fukutomi, Akio Mori, Masami Taniguchi
BACKGROUND: The bronchial hyperresponsiveness (BHR) test is useful to diagnose or evaluate effect of therapy in asthmatics, but invasive. On the other hands, the fraction of exhaled nitric oxide (FENO) is a useful noninvasive marker of eosinophilic airway inflammation in asthmatics. And also, the forced oscillation technique (FOT) is a noninvasive method that is used to measure respiratory mechanics, including respiratory resistance and reactance at multiple frequencies. AIM: To evaluate the complementary roles of FENO and FOT to predict bronchial hyperresponsiveness in adult stable asthmatic patients taking inhaled corticosteroids...
2017: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/28215791/does-ethnicity-influence-fractional-exhaled-nitric-oxide-in-healthy-individuals-a-systematic-review
#19
Tamara L Blake, Anne B Chang, Mark D Chatfield, Helen L Petsky, Leanne T Rodwell, Michael G Brown, Deb C Hill, Margaret S McElrea
BACKGROUND: Fractional exhaled nitric oxide (FeNO) is used clinically as a biomarker of eosinophilic airway inflammation. Awareness of the factors influencing FeNO values is important for valid clinical interpretation. METHODS: We undertook a systematic review of PubMed, Cochrane Library, Scopus and Web of Science databases, as well as reference lists of included articles to evaluate whether ethnicity influences FeNO values, and to determine if this influence affects clinical interpretation according to current guidelines...
February 16, 2017: Chest
https://www.readbyqxmd.com/read/28209039/-the-value-of-fractionated-exhaled-nitric-oxide-in-the-diagnosis-of-asthma-chronic-obstructive-pulmonary-disease-overlap-syndrome
#20
D D Deng, A Y Zhou, Q C Shuang, P Chen
Objective: To explore the diagnostic value of fractionated exhaled nitric oxide (FeNO) measurement in patients with asthma-chronic obstructive pulmonary disease(COPD) overlap syndrome (ACOS). Methods: Eighty-one patients with ACOS, 76 patients with asthma, 82 patients with COPD and 39 healthy non-smoking subjects were recruited in the study. Naku Lun breath analyzer was used to measure the level of FeNO in the 4 groups. Pulmonary function was also measured. The ROC curve was used to differentiate ACOS from patients with COPD...
February 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
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