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Fractionated exhaled nitric oxide

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https://www.readbyqxmd.com/read/28427296/predictors-of-response-to-therapy-with-omalizumab-in-patients-with-severe-allergic-asthma-a-real-life-study
#1
Maria Kallieri, Andriana I Papaioannou, Evgenia Papathanasiou, Polyxeni Ntontsi, Spyridon Papiris, Stelios Loukides
INTRODUCTION: Omalizumab is a recombinant humanized IgG1 monoclonal anti-IgE antibody, used for the treatment of severe refractory allergic asthma. However, not all patients with IgE levels within the limits of administration, respond to treatment. The aim of the present study, was to determine clinical and inflammatory characteristics that could predict response to omalizumab. METHODS: We studied retrospectively patients treated with omalizumab as per GINA guidelines in one asthma tertiary referral center...
April 21, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28417625/influence-of-sensitization-patterns-on-fractional-exhaled-nitric-oxide-in-asthmatic-children
#2
Miao Qing, Xu Wei, Li Zhen, Guan Hui, Liu Xiao-Ying, Huang Hui-Jie, Wang Yan, Ren Yi-Xin, Liu Yong-Ge, Xiang Li
Fractional exhaled nitric oxide (FeNO) has been suggested as a non-invasive biomarker of airway inflammation, which is increased in atopic subjects. Whether sensitization to particular allergens is a predictive factor for increased FeNO levels is not yet fully understood. We conducted a retrospective cross-sectional study. From October to December in 2015, the medical documents of 127 mild, steroid-naive asthmatic children and 34 healthy age-matched children were enrolled in this study. The results of the FeNO measurements, skin prick test, and the spirometry were collected for analysis...
February 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28407829/-application-of-pulmonary-function-and-fractional-exhaled-nitric-oxide-tests-in-the-standardized-management-of-bronchial-asthma-in-children
#3
Hui-Qin Zhang, Hui-Qin Zhang, Jing-Jing Zhang, Yu-Dong Liu, Yue-Lin Deng, Jian-Feng Luo, Huan-Hong Niu, Xin Sun
OBJECTIVE: To investigate the changes of pulmonary function and fractional exhaled nitric oxide (FeNO) in the standardized treatment of bronchial asthma in children. METHODS: A total of 254 children who were newly diagnosed with acute exacerbation of bronchial asthma were selected as asthma group, and they were divided into two subgroups: asthma with concurrent rhinitis and asthma without concurrent rhinitis. All patients received the standardized management and treatment for one year...
April 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28393619/fractional-exhaled-nitric-oxide-measurement-in-pulmonary-hypertension-a-follow-up-study
#4
Nilay Orak Akbay, Zuleyha Bingol, Esen Kiyan, Ekrem Bilal Karaayvaz, Ahmet Kaya Bilge, Halim Issever, Gulfer Okumus
Pulmonary hypertension (PH) is a fatal disease although significant improvements in treatment are achieved. Easily implemented and noninvasive prognostic techniques are needed while following-up these patients. The aim was to investigate the role of fractional exhaled nitric oxide (FeNO) in follow-up for patients with PH. In this longitudinal study, patients with pulmonary arterial hypertension (PAH) and chronic thromboembolic PH (CTEPH) who were seen in PH Outpatient Clinic, Istanbul Faculty of Medicine, Istanbul University, were enrolled in the study...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28392708/lung-sound-analysis-helps-localize-airway-inflammation-in-patients-with-bronchial-asthma
#5
Terufumi Shimoda, Yasushi Obase, Yukio Nagasaka, Hiroshi Nakano, Akiko Ishimatsu, Reiko Kishikawa, Tomoaki Iwanaga
PURPOSE: Airway inflammation can be detected by lung sound analysis (LSA) at a single point in the posterior lower lung field. We performed LSA at 7 points to examine whether the technique could identify the location of airway inflammation in patients with asthma. PATIENTS AND METHODS: Breath sounds were recorded at 7 points on the body surface of 22 asthmatic subjects. Inspiration sound pressure level (ISPL), expiration sound pressure level (ESPL), and the expiration-to-inspiration sound pressure ratio (E/I) were calculated in 6 frequency bands...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28392707/factors-predicting-persistence-of-early-wheezing-through-childhood-and-adolescence-a-systematic-review-of-the-literature
#6
Carlos E Rodríguez-Martínez, Monica P Sossa-Briceño, Jose A Castro-Rodriguez
BACKGROUND: For the early identification of persistent asthma symptoms among young children with recurrent wheezing, it would be helpful to identify all available studies that have identified at least one factor for predicting the persistence of early wheezing. The objective of the present study was to perform a systematic review of all studies that have identified factors that predict the persistence of symptoms among young patients with recurring wheezing. METHODS: A systematic review of relevant studies was conducted through searching in MEDLINE, EMBASE, CINHAL, and SCOPUS databases up to June 2016...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28390585/biomarkers-of-oxidative-stress-and-antioxidants-in-severe-asthma-a-prospective-case-control-study
#7
Abigail Bishopp, Ramamurthy Sathyamurthy, Sarah Manney, Craig Webbster, Mamidipudi Thirumala Krishna, Adel H Mansur
BACKGROUND: Bronchial airway inflammation is the hallmark of asthma, which may be driven by an imbalance between oxidative stress and antioxidant defenses. Antioxidants deficiency may play a role, but this has remained unconfirmed. OBJECTIVE: To evaluate the oxidative stress burden and antioxidants defenses in patients with increasing asthma severity. METHODS: This prospective case-control study compared fractional exhaled nitric oxide (FeNO), exhaled breath condensate nitrite/nitrate (EBC-NOx), spirometry, and serum vitamins and trace elements among patients with and without asthma...
April 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28390083/high-fractional-exhaled-nitric-oxide-and-sputum-eosinophils-are-associated-with-an-increased-risk-of-future-virus-induced-exacerbations-ndash-a-prospective-cohort-study
#8
Asger Bjerregaard, Ingrid A Laing, Vibeke Backer, Asger Sverrild, Siew-Kim Khoo, Glenys Chidlow, Chisha Sikazwe, David W Smith, Peter Le Souëf, Celeste Porsbjerg
BACKGROUND: The major trigger of asthma exacerbations is infection with a respiratory virus, most commonly rhinovirus. Type 2 inflammation is known to be associated with an increased risk of exacerbations in general. Whether type 2 inflammation at baseline increases the risk of future virus-induced exacerbations is unknown. OBJECTIVE: To assess whether type 2 inflammation is associated with an increased risk of virus-induced exacerbations of asthma. METHODS: Stable asthmatics had spirometry, skin prick test, measurement of FeNO and sputum induced for differential cell counts...
April 8, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28377348/-comparison-of-functional-parameters-of-small-airways-between-patients-with-typical-asthma-and-cough-variant-asthma
#9
Shu-Yu Chen, Ze-Kui Fang, Si Fang, Qi-Xiao Shen, Xi He, Cui-Lan Wang, Hua-Peng Yu
OBJECTIVE: To compare the functional parameters of the small airways and clinical characteristics between patients with typical asthma (TA) and cough-variant asthma (CVA). METHODS: Forty-three newly diagnosed asthmatic patients were enrolled, including 15 with TA and positive bronchial provocation test [TA BPT(+)], 12 with TA and positive bronchial dilation test [TA BDT(+)] and 16 with CVA, and 27 healthy subjects served as the control group. All the subjects were required to complete data acquisition, asthma control test, asthma control test scale, fractional exhaled nitric oxide, airway resistance and pulmonary function tests, BPT or BDT...
March 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28376119/obesity-disproportionately-impacts-lung-volumes-airflow-and-exhaled-nitric-oxide-in-children
#10
Tsung-Chieh Yao, Hui-Ju Tsai, Su-Wei Chang, Ren-Hua Chung, Jing-Ya Hsu, Ming-Han Tsai, Sui-Ling Liao, Man-Chin Hua, Shen-Hao Lai, Li-Chen Chen, Kuo-Wei Yeh, Yu-Lun Tseng, Wan-Chen Lin, Su-Ching Chang, Jing-Long Huang
BACKGROUND: The current literature focusing on the effect of obesity and overweight on lung function and fraction of exhaled nitric oxide (FeNO) in children, particularly among healthy children of non-European descent, remains controversial. Furthermore, whether the relationship of obesity and overweight with lung function and FeNO in children is modified by atopy is unclear. The objective of this study was to examine the effect of excess weight on lung function parameters and FeNO among Asian children, with a particular focus on exploring the potential effect modification by atopy...
2017: PloS One
https://www.readbyqxmd.com/read/28360460/fractional-exhaled-nitric-oxide-is-a-useful-adjunctive-modality-for-monitoring-bronchial-asthma
#11
Venkatnarayan Kavitha, Anant Mohan, Karan Madan, Vijay Hadda, G C Khilnani, Randeep Guleria
BACKGROUND AND OBJECTIVE: To evaluate the utility of fractional exhaled nitric oxide (FeNO) in monitoring asthma control. MATERIALS AND METHODS: Steroid naïve nonsmoking asthmatics were recruited and followed for 6-8 weeks on standard treatment. Serial measurements of FeNO, peak expiratory flow rate (PEFR) variability, forced expiratory volume in 1 s (FEV1), bronchodilator reversibility (BDR), and asthma control test (ACT) score were measured at baseline and after 6-8 weeks of treatment...
March 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28357800/comparison-of-normal-and-dusty-day-impacts-on-fractional-exhaled-nitric-oxide-and-lung-function-in-healthy-children-in-ahvaz-iran
#12
Abdolkazem Neisi, Mehdi Vosoughi, Esmaeil Idani, Gholamreza Goudarzi, Afshin Takdastan, Ali Akbar Babaei, Kambiz Ahmadi Ankali, Sadegh Hazrati, Maryam Haddadzadeh Shoshtari, Iman Mirr, Heidar Maleki
Children are the vulnerable group at risk of adverse health effects related to air pollution due to dust storm in Ahvaz. The purpose of this study was to compare the values of fractional exhaled nitric oxide (FENO) and lung functions as parameters of adverse health effects of particulate matter (PM) in dusty and normal (non-dusty) days in elementary schoolchildren. The study was conducted among elementary school students in Ahvaz. The healthy elementary schoolchildren (N = 105) were selected from different districts for FENO and lung function sampling during the dusty and normal days...
March 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28356764/study-of-nasal-exhaled-nitric-oxide-levels-in-diagnosis-of-allergic-rhinitis-in-subjects-with-and-without-asthma
#13
Sy Duong-Quy, Thuc Vu-Minh, Thong Hua-Huy, Tram Tang-Thi-Thao, Khiet Le-Quang, Dinh Tran-Thanh, Nhu Doan-Thi-Quynh, Nhat-Nam Le-Dong, Timothy J Craig, Anh-Tuan Dinh-Xuan
BACKGROUND: The measure of fractional exhaled nitric oxide (FENO) in the airways is a useful tool to guide the diagnosis and titration of inhaled corticosteroids in patients with asthma. However, its role in diagnosis of allergic rhinitis (AR), especially in subjects with asthma, is not well established. OBJECTIVE: To study the cutoff of nasal FENO in the diagnosis of subjects with AR and AR-asthma compared to age-matched subjects without AR or asthma and its correlations with the clinical and functional characteristics...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28332897/characteristics-of-non-smoking-adult-asthma-patients-with-chronic-airflow-limitation
#14
TunnRen Tay, Xuening Choo, Rosna Ihsan, Hsiao Peng Toh, Hang Siang Wong, Augustine Tee
OBJECTIVE: Chronic airflow limitation (CAL) can develop in a subgroup of patients with asthma. Characterising these patients is important because reduced lung function is a risk factor for adverse asthma outcomes. We hypothesised that heterogeneity in patients with CAL may be influenced by age at asthma onset. We first compared never-smoking asthma patients with and without CAL, and subsequently examined the differences between patients with late and early-onset asthma within the CAL cohort...
March 23, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28328850/measurement-of-exhaled-nitric-oxide-concentration-in-patients-with-obstructive-sleep-apnea-a-meta-analysis
#15
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
#16
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/28303238/feasibility-of-a-peer-led-asthma-and-smoking-prevention-project-in-australian-schools-with-high-indigenous-youth
#17
Gabrielle B McCallum, Anne B Chang, Cate A Wilson, Helen L Petsky, Jan Saunders, Susan J Pizzutto, Siew Choo Su, Smita Shah
BACKGROUND: The high global burden of asthma and tobacco smoking among Indigenous people may potentially be reduced by appropriate interventions that target prevention of tobacco smoke uptake and improved asthma management. The latter includes targeted treatment based on airway inflammation. We undertook a feasibility study in two Darwin schools with a high proportion of Indigenous youth to determine the feasibility of an innovative, peer-led, school-based education program called the Asthma and Smoking Prevention Project (ASPP)...
2017: Frontiers in Pediatrics
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
#18
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...
April 3, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28298259/phenotypic-analysis-of-asthma-in-japanese-athletes
#19
Keisuke Tsukioka, Toshiyuki Koya, Hiroshi Ueno, Masachika Hayashi, Takuro Sakagami, Takashi Hasegawa, Masaaki Arakawa, Eiichi Suzuki, Toshiaki Kikuchi
BACKGROUND: Asthma in athlete populations such as Olympic athletes has various pathogeneses. However, few reports are available on the features of asthma in the athlete population in clinical practice. In this study, we focused on classifying asthma in Japanese athlete population. METHODS: We performed a cluster analysis of data from pulmonary function tests and clinical biomarkers before administering inhaled corticosteroids (ICS) therapy in athlete population of individuals diagnosed with asthma (n = 104; male, 76...
March 12, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28296234/association-between-fractional-exhaled-nitric-oxide-and-clinical-characteristics-and-outcomes-in-patients-with-subacute-cough
#20
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
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