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Fractionated exhaled nitric oxide

Patrizia Pignatti, Antonio Spanevello
No abstract text is available yet for this article.
September 2016: Annals of Translational Medicine
Marieke Verkleij, Anita Beelen, Bart E van Ewijk, Rinie Geenen
OBJECTIVE: For children with problematic severe asthma, achieving adequate control of asthma is difficult. The aim of this prospective observational study was to evaluate the effects of intensive multidisciplinary inpatient treatment on multiple outcome variables in children with problematic severe asthma. METHODS: Participants were 89 children with problematic severe asthma (mean age 13.6 ± 2.5 years) treated in tertiary care clinics at high altitude (Switzerland) or sea level (Netherlands) and their parents (85 mothers, 55 fathers)...
October 13, 2016: Pediatric Pulmonology
Wei Tang, Jun Zhou, Lili Miao, GuoCao Shi
OBJECTIVE: Cough variant asthma (CVA) is a subtype of asthma that is characterized by a chronic cough. We compared the clinical characteristics and pulmonary function in patients with CVA who had normal and high exhaled fractional nitric oxide (FeNO) levels. METHODS: We collected the clinical history and pulmonary function data from 99 patients with newly diagnosed CVA. RESULT: Newly diagnosed subjects with CVA were divided into a high FeNO group (FeNO value over or equal to 25 ppb, n=52) and a normal FeNO group (FeNO lower than 25 ppb, n=47)...
October 12, 2016: Clinical Respiratory Journal
Ronen Bar-Yoseph, Nir Kugelman, Galit Livnat, Michal Gur, Fahed Hakim, Vered Nir, Lea Bentur
BACKGROUND AND OBJECTIVES: Asthma is a chronic inflammatory disorder requiring intermittent or continuous anti-inflammatory therapy. Patients often turn to alternative treatments as complements or replacements to conventional treatments. We aimed to evaluate the effect of salt room chambers (halotherapy) on bronchial hyper-responsiveness (BHR), fractional exhaled nitric oxide (FeNO), and quality of life in children with asthma. PATIENTS AND METHODS: Children aged 5-13 years with a clinical diagnosis of mild asthma not receiving anti-inflammatory therapy...
October 10, 2016: Pediatric Pulmonology
Clairelyne Dupin, Sylvain Marchand-Adam, Olivier Favelle, Romain Costes, Philippe Gatault, Philippe Diot, Leslie Grammatico-Guillon, Laurent Guilleminault
PURPOSE: Little is known about hypogammaglobulinemia (HGG) in asthma patients. No data are available on the characteristics of adult patients with asthma and HGG. METHODS: We conducted a retrospective monocentric study between January 2006 and December 2012. Asthma patients with a serum immunoglobulin (Ig) quantitative analysis were included and classified into two groups depending on their serum IgG concentration: presence or absence of HGG. Clinical, biological, functional, and radiologic characteristics were compared in univariate and multivariate analysis, using a logistic regression model...
October 6, 2016: Journal of Clinical Immunology
Feng-Jia Chen, Xin-Yan Huang, Yang-Li Liu, Geng-Peng Lin, Can-Mao Xie
BACKGROUND: Fractional exhaled nitric oxide (FeNO) is an easy, sensitive, reproducible, and noninvasive marker of eosinophilic airway inflammation. Accordingly, FeNO is extensively used to diagnose and manage asthma. Patients with COPD who share some of the features of asthma have a condition called asthma-COPD overlap syndrome (ACOS). The feasibility of using FeNO to differentiate ACOS patients from asthma and COPD patients remains unclear. METHODS: From February 2013 to May 2016, patients suspected with asthma and COPD through physician's opinion were subjected to FeNO measurement, pulmonary function test (PFT), and bronchial hyperresponsiveness or bronchodilator test...
2016: International Journal of Chronic Obstructive Pulmonary Disease
Woo-Jung Song, Ha-Kyeong Won, Sung-Do Moon, Soo-Jie Chung, Sung-Yoon Kang, Kyoung-Hee Sohn, Ju-Young Kim, Byung-Keun Kim, Kyung-Hwan Lim, Mi-Yeong Kim, Min-Suk Yang, Heung-Woo Park, Yoon-Seok Chang, Byung-Jae Lee, Alyn H Morice, Sang-Heon Cho
BACKGROUND: Fractional exhaled nitric oxide (Feno) is a safe and convenient test for assessing TH2 airway inflammation, which is potentially useful in the management of patients with chronic cough. OBJECTIVE: To summarize the current evidence on the diagnostic usefulness of Feno for predicting inhaled corticosteroid (ICS) responsiveness in patients with chronic cough. METHODS: A systematic literature review was conducted to identify articles published in peer-reviewed journals up to February 2015, without language restriction...
October 1, 2016: Journal of Allergy and Clinical Immunology in Practice
Asako Oka, Tsunahiko Hirano, Yoshikazu Yamaji, Kosuke Ito, Keiji Oishi, Nobutaka Edakuni, Reo Kawano, Kazuto Matsunaga
BACKGROUND: Characterizing associations between the upper and lower airways is important for asthma management. OBJECTIVES: This study aimed to assess the determinants of incomplete asthma control in patients with allergic rhinitis (AR) and asthma. METHODS: Multiple factors including age, sex, atopy, smoking history, medication use, Asthma Control Questionnaire (ACQ) score, FEV1, fraction of exhaled nitric oxide (Feno), and rhinitis questionnaire score were examined...
October 1, 2016: Journal of Allergy and Clinical Immunology in Practice
Zheng Zhu, Yanqing Xie, Weijie Guan, Yi Gao, Shu Xia, Nanshan Zhong, Jinping Zheng
Allergic rhinitis (AR) is a risk factor for asthma development. The value of fractional exhaled nitric oxide (FeNO) in detecting lower airway involvement in the progress of AR-asthma march has not been evaluated. The aim of the present study was to investigate the value of FeNO in assessing lower airway inflammation and predicting bronchial hyperresponsiveness (BHR) in AR with or without asthma. FeNO and eosinophil count in induced sputum, and a methacholine bronchial provocation test were performed in 93 subjects, including: 45 AR patients (AR group); 20 patients with AR and asthma (AR with asthma group); and 28 normal controls (control group)...
October 2016: Experimental and Therapeutic Medicine
Zheng Zhu, Yanqing Xie, Weijie Guan, Yi Gao, Shu Xia, Rongquan Huang, Nanshan Zhong, Jinping Zheng
Background Both histamine and leukotrienes are implicated in the pathogenesis of allergic rhinitis (AR), although the pattern and severity of the nasal response to these two potent inflammatory mediators may differ, which has not been adequately studied in patients with persistent AR. Objective We sought to compare the differential effects of nasal challenge with leukotriene D4 (LTD4 ) and histamine on the airway response and inflammation in patients with AR. Methods An open-label, crossover study was performed in 25 persistent AR patients (AR group) and 16 healthy subjects (control group)...
October 3, 2016: Clinical Respiratory Journal
Hanh Nguyen-Thi-Bich, Huong Duong-Thi-Ly, Vu Thi Thom, Nhung Pham-Thi-Hong, Long Doan Dinh, Huong Le-Thi-Minh, Timothy John Craig, Sy Duong-Quy
INTRODUCTION: Fractional exhaled nitric oxide (FENO) is a biomarker of airway inflammation in asthma. The measurement of FENO is utilized to assist in the diagnosis and treatment of children with asthma, especially for those treated with inhaled corticosteroids. OBJECTIVES: The aims of this study were to evaluate the correlations between FENO and atopic status, blood eosinophil levels, FCER2 mutation, and asthma control in Vietnamese children. SUBJECTS AND METHODS: This was a prospective and descriptive study approved by the local Ethical Board...
2016: Journal of Asthma and Allergy
Stephanie Lovinsky-Desir, Kyung Hwa Jung, Andrew G Rundle, Lori A Hoepner, Joshua B Bautista, Frederica P Perera, Steven N Chillrud, Matthew S Perzanowski, Rachel L Miller
OBJECTIVE: Regular physical activity can improve cardiopulmonary health; however, increased respiratory rates and tidal volumes during activity may increase the effective internal dose of air pollution exposure. Our objective was to investigate the impact of black carbon (BC) measured by personal sampler on the relationship between physical activity and fractional exhaled nitric oxide (FeNO), a marker of airway inflammation. We hypothesized that higher personal BC would attenuate the protective effect of physical activity on airway inflammation...
September 29, 2016: Environmental Research
Takamitsu Asano, Masaya Takemura, Kensuke Fukumitsu, Norihisa Takeda, Hiroya Ichikawa, Hisatoshi Hijikata, Yoshihiro Kanemitsu, Takehiro Uemura, Osamu Takakuwa, Hirotsugu Ohkubo, Ken Maeno, Yutaka Ito, Tetsuya Oguri, Atsushi Nakamura, Akio Niimi
BACKGROUND: Cough-variant asthma (CVA) and cough-predominant asthma (CPA) are the major causes of persistent cough in Japan. The utility of fractional exhaled nitric oxide (FeNO) measurement in the differential diagnosis of persistent cough has been reported, but the influence of atopic status, which is associated with higher FeNO levels, on the diagnostic utility of FeNO has been unknown. METHODS: We retrospectively analyzed 105 non-smoking patients with prolonged and chronic cough that were not treated with corticosteroids and anti-leukotrienes...
September 29, 2016: Allergology International: Official Journal of the Japanese Society of Allergology
Lukasz Antoniewicz, Jenny A Bosson, Jeanette Kuhl, Samy M Abdel-Halim, Anna Kiessling, Fariborz Mobarrez, Magnus Lundbäck
BACKGROUND AND AIMS: The use of electronic cigarettes is increasing dramatically on a global scale and its effects on human health remain uncertain. In the present study, we measured endothelial progenitor cells (EPCs) and microvesicles (MVs) in healthy young volunteers following short-term exposure to inhalation of e-cigarette vapor (ECV) to determine vascular changes. METHODS: Sixteen healthy seldom smokers were randomized into two groups either exposed or not exposed to 10 puffs of ECV for 10 min, in a crossover design...
September 22, 2016: Atherosclerosis
Sachio Takeno, Yutaka Okabayashi, Takashi Kohno, Kouhei Yumii, Katsuhiro Hirakawa
OBJECTIVE: Patients with allergic rhinitis (AR) show augmented activity of nitric oxide (NO) metabolism, similar to those in bronchial asthma (BA). We hypothesized that measurements of nasal fractional exhaled NO (FeNO) could be used as an objective marker to detect the presence of AR. Our objective was to clarify the influence of nasal airflow resistance (NAR) on nasal FeNO levels through an exhalation maneuver in symptomatic AR patients. We also examined the diagnostic test validity of the mean nasal FeNO level for disease discrimination by means of a receiver operating characteristic (ROC) curve analysis...
September 27, 2016: Auris, Nasus, Larynx
Kazutaka Mori, Tomoyuki Fujisawa, Naoki Inui, Dai Hashimoto, Noriyuki Enomoto, Yutaro Nakamura, Shigeki Kuroishi, Koshi Yokomura, Mikio Toyoshima, Shiro Imokawa, Takashi Yamada, Toshihiro Shirai, Masafumi Masuda, Hiroshi Hayakawa, Kingo Chida, Takafumi Suda
BACKGROUND: The stepping down of asthma treatment can be considered when asthma symptoms have been well controlled with inhaled corticosteroids (ICSs)/long-acting β2 adrenergic agonists (LABAs). However, few data are available comparing the efficacy between two step-down strategies, to reduce ICS/LABA dose or to withdraw LABA continuing ICS, in well-controlled asthmatics. METHODS: This was a prospective multicentre randomized, two-arm, controlled study. Ninety-one asthmatic patients controlled by budesonide/formoterol combination (BFC) 320/9 μg twice daily were assigned to 2 stepping-down treatments as follows: the BFC group; BUD/FM 160/4...
October 2016: Respiratory Medicine
Hussein H Mwanga, Mohamed Aqiel Dalvie, Tanusha S Singh, Kalavati Channa, Mohamed F Jeebhay
The objective of this study was to investigate the relationship between exposure to organophosphate (OP) and pyrethroid (PYR) pesticides with serum cytokine patterns and asthma-related outcomes among rural women workers. A cross-sectional study was conducted among rural women (n = 211), including those working and living on farms and nearby town dwellers. Pesticide exposure was assessed using urinary metabolite concentrations of OP and PYR pesticides. Health outcome assessment was ascertained through the European Community Respiratory Health Survey (ECRHS) questionnaire, fractional exhaled nitric oxide (FeNO), and serum cytokines associated with asthma...
2016: International Journal of Environmental Research and Public Health
Tadahiro Goto, Carlos A Camargo, Kohei Hasegawa
PURPOSE: Recent studies propose TH2-mediated inflammation in patients with asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS). However, little is known about whether fractional exhaled nitric oxide (FeNO) differs between patients with ACOS and those with COPD alone. To address this knowledge gap, a nationally representative sample was analyzed to determine the difference in FeNO levels between patients with ACOS and those with COPD alone in the US population. PATIENTS AND METHODS: This is a cross-sectional analysis of the National Health and Nutrition Examination Survey from 2007 through 2012...
2016: International Journal of Chronic Obstructive Pulmonary Disease
Seiichi Kobayashi, Masakazu Hanagama, Shinsuke Yamanda, Masatsugu Ishida, Masaru Yanai
BACKGROUND: The clinical phenotypes and underlying mechanisms of asthma-COPD overlap syndrome (ACOS) remain elusive. This study aimed to investigate a comparison of COPD patients with and without ACOS, focusing on inflammatory biomarkers, in an outpatient COPD cohort. METHODS: We conducted a cross-sectional study analyzing prospectively collected data from the Ishinomaki COPD Network registry. All participants were diagnosed with COPD, confirmed by using spirometry, and were aged 40-90 years and former smokers...
2016: International Journal of Chronic Obstructive Pulmonary Disease
Asger Bjerregaard, Ingrid A Laing, Vibeke Backer, Markus Fally, Siew-Kim Khoo, Glenys Chidlow, Chisha Sikazwe, David W Smith, Peter Le Souëf, Celeste Porsbjerg
BACKGROUND AND OBJECTIVE: Airway eosinophilia is associated with an increased risk of asthma exacerbations; however, the impact on the severity of exacerbations is largely unknown. We describe the sputum inflammatory phenotype during asthma exacerbation and correlate it with severity and treatment response. METHODS: Patients presenting to hospital with an asthma exacerbation were recruited during a 12-month period and followed up after 4 weeks. Induced sputum was collected at both visits...
September 21, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
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