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https://www.readbyqxmd.com/read/27902492/exhaled-nitric-oxide-in-a-middle-aged-icelandic-population-cohort
#1
Anna Kristin Thorhallsdottir, David Gislason, Andrei Malinovschi, Michael Clausen, Thorarinn Gislason, Christer Janson, Bryndis Benediktsdottir
The prevalence of atopy and asthma is relatively low in Iceland. The purpose of this study was to describe exhaled nitric oxide (FeNO) levels in the general population in correlation with demographic characteristics, smoking status, asthma, rhinitis, atopic status and lung function tests. Altogether 403 subjects, from the European Community Respiratory Health Survey (ECRHS) III who answered the main questionnaire and were checked by FeNO measurements, lung function testing, skin prick testing and measurement of total IgE and specific IgE were included...
November 30, 2016: Journal of Breath Research
https://www.readbyqxmd.com/read/27886852/-cold-air-and-or-talking-as-cough-triggers-a-sign-for-the-diagnosis-of-cough-variant-asthma
#2
Yoshihiro Kanemitsu, Hisako Matsumoto, Nuriamina Osman, Tsuyoshi Oguma, Tadao Nagasaki, Yumi Izuhara, Isao Ito, Tomoko Tajiri, Toshiyuki Iwata, Akio Niimi, Michiaki Mishima
BACKGROUND: Fractional exhaled nitric oxide (FeNO) is considered an alternative marker of eosinophilic airway inflammation and is sometimes incorporated in the diagnosis of asthma. However, many patients with cough variant asthma (CVA) demonstrate an FeNO in the normal range. Therefore, additional information is needed to confirm the diagnosis of CVA, particularly in patients with low FeNO levels. We aimed to investigate the feasibility of using cough triggers to help diagnose CVA. METHODS: We studied 163 patients presenting with prolonged/chronic cough alone (including 104 CVA patients) who underwent FeNO measurements and an airway responsiveness test, and answered a questionnaire listing 18 cough triggers...
November 2016: Respiratory Investigation
https://www.readbyqxmd.com/read/27859599/double-blind-placebo-controlled-challenge-showed-that-peanut-oral-immunotherapy-was-effective-for-severe-allergies-without-negative-effects-on-airway-inflammation
#3
Anna Kaarina Kukkonen, Riikka Uotila, Leo Pekka Malmberg, Anna Susanna Pelkonen, Mika Juhani Mäkelä
AIM: This study examined the efficacy and the safety of peanut oral immunotherapy (OIT). METHODS: We recruited 60 patients aged 6-18 years who had a moderate-to-severe reaction to a double-blind placebo-controlled peanut challenge: 39 received OIT during an eight-month build-up phase and maintenance phase and 21 controls avoided peanuts. We measured specific immunoglobulin E and G4 (IgE and IgG4) to peanuts and to Ara h 1, 2, 3, 8, and 9 and monitored adverse events, bronchial hyperresponsiveness (BHR) to methacholine and fractional concentrations of exhaled nitric oxide (FeNO)...
November 12, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27856762/nitrosomonas-europaea-cytochrome-p460-is-a-direct-link-between-nitrification-and-nitrous-oxide-emission
#4
Jonathan D Caranto, Avery C Vilbert, Kyle M Lancaster
Ammonia oxidizing bacteria (AOB) are major contributors to the emission of nitrous oxide (N2O). It has been proposed that N2O is produced by reduction of NO. Here, we report that the enzyme cytochrome (cyt) P460 from the AOB Nitrosomonas europaea converts hydroxylamine (NH2OH) quantitatively to N2O under anaerobic conditions. Previous literature reported that this enzyme oxidizes NH2OH to nitrite ([Formula: see text]) under aerobic conditions. Although we observe [Formula: see text] formation under aerobic conditions, its concentration is not stoichiometric with the NH2OH concentration...
November 16, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27852361/-lower-airway-abnormalities-in-patients-with-allergic-rhinitis
#5
J F Ji, Q P Wang, Y Zhang, Z Y Wang, Y Q Xie, W J Guan, K M Wu, L Xu, W Chen, F Xue, M J Jiang, T Y Wang, N S Zhong
Objective: To investigate the characteristics of lower airway abnormalities in allergic rhinitis(AR) patients without asthma. Methods: Between June 2008 and December 2012, 377 consecutive AR patients and 264 healthy subjects were recruited. All subjects underwent meticulous history taking, nasal examination, allergen skin prick test, blood routine test, serum total immunoglobin E assay, induced sputum cell count and differentials, measurement of fractional exhaled nitric oxide (FeNO) and bronchial challenge test...
November 12, 2016: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/27825992/prevalence-determinants-and-clinical-correlates-of-vitamin-d-deficiency-in-adults-with-inhaled-corticosteroid-treated-asthma-in-london-uk
#6
REVIEW
David A Jolliffe, Kate Kilpin, Beverley D MacLaughlin, Claire L Greiller, Richard L Hooper, Neil C Barnes, Peter M Timms, Raj K Rajakulasingam, Angshu Bhowmik, Aklak B Choudhury, David E Simcock, Elina Hyppönen, Christopher J Corrigan, Robert T Walton, Christopher J Griffiths, Adrian R Martineau
Vitamin D deficiency is common in children with asthma, and it associates with poor asthma control, reduced forced expiratory volume in one second (FEV1) and increased requirement for inhaled corticosteroids (ICS). Cross-sectional studies investigating the prevalence, determinants and clinical correlates of vitamin D deficiency in adults with asthma are lacking. We conducted a multi-centre cross-sectional study in 297 adults with a medical record diagnosis of ICS-treated asthma living in London, UK. Details of potential environmental determinants of vitamin D status, asthma control and medication use were collected by questionnaire; blood samples were taken for analysis of serum 25(OH)D concentration and DNA extraction, and participants underwent measurement of weight, height and fractional exhaled nitric oxide concentration (FeNO), spirometry and sputum induction for determination of lower airway eosinophil counts (n=35 sub-group)...
November 5, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27825189/exhaled-nitric-oxide-levels-to-guide-treatment-for-children-with-asthma
#7
REVIEW
Helen L Petsky, Kayleigh M Kew, Anne B Chang
BACKGROUND: Asthma guidelines aim to guide health practitioners to optimise treatment for patients to minimise symptoms, improve or maintain good lung function, and prevent acute exacerbations. The principle of asthma guidelines is based on a step-up or step-down regimen of asthma medications to maximise health using minimum doses. Fractional exhaled nitric oxide (FeNO) is a marker of eosinophilic inflammation and tailoring asthma medications in accordance to airway eosinophilic levels may improve asthma outcomes such as indices of control or reduce exacerbations, or both...
November 9, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27824597/growth-trajectories-and-asthma-rhinitis-in-children-a-longitudinal-study-in-taiwan
#8
Yang-Ching Chen, Tsan-Hon Liou, Pau-Chung Chen, Bor-Luen Chiang, Yao-Hsu Yang, Hsien-Yu Fan, Yungling Leo Lee
Studies have reported the effect of body weight in early childhood on asthma. However, the effect of growth patterns during school age on asthma and rhinitis has yet to be explored. We sought to investigate whether various growth patterns predict incident asthma and rhinitis.We conducted a nationwide longitudinal study (Taiwan Children Health Study) in 14 Taiwanese communities. Body mass index (BMI) z-scores of 4422 children aged 6-11 years were collected annually and distinct growth trajectory classes were identified using a latent generalised mixture model...
October 20, 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/27802882/respiratory-symptoms-and-fractional-exhaled-nitric-oxide-feno-among-students-in-penang-malaysia-in-relation-to-signs-of-dampness-at-school-and-fungal-dna-in-school-dust
#9
Dan Norbäck, Jamal Hisham Hashim, Zailina Hashim, Gui-Hong Cai, Vinoshini Sooria, Syazwan Aizat Ismail, Gunilla Wieslander
Few health studies exist on dampness and mould in schools in the tropics. We studied associations between fraction of exhaled nitric oxide (FeNO), respiratory symptoms and airway infections among students and dampness and fungal DNA in schools in Malaysia. A total of 368 randomly selected students from 32 classrooms in 8 secondary schools in Penang, Malaysia, participated (58% participation rate). Information on current respiratory symptoms and the home environment was collected by a standardised questionnaire...
January 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27801576/synthesis-x-ray-structures-electronic-properties-and-o2-no-reactivities-of-thiol-dioxygenase-active-site-models
#10
Anne A Fischer, Nuru Stracey, Sergey V Lindeman, Thomas C Brunold, Adam T Fiedler
Mononuclear non-heme iron complexes that serve as structural and functional mimics of the thiol dioxygenases (TDOs), cysteine dioxygenase (CDO) and cysteamine dioxygenase (ADO), have been prepared and characterized with crystallographic, spectroscopic, kinetic, and computational methods. The high-spin Fe(II) complexes feature the facially coordinating tris(4,5-diphenyl-1-methylimidazol-2-yl)phosphine ((Ph2)TIP) ligand that replicates the three histidine (3His) triad of the TDO active sites. Further coordination with bidentate l-cysteine ethyl ester (CysOEt) or cysteamine (CysAm) anions yielded five-coordinate (5C) complexes that resemble the substrate-bound forms of CDO and ADO, respectively...
November 1, 2016: Inorganic Chemistry
https://www.readbyqxmd.com/read/27792747/nasal-airflow-measured-by-rhinomanometry-correlates-with-feno-in-children-with-asthma
#11
I-Chen Chen, Yu-Tsai Lin, Jong-Hau Hsu, Yi-Ching Liu, Jiunn-Ren Wu, Zen-Kong Dai
BACKGROUND: Rhinitis and asthma share similar immunopathological features. Rhinomanometry is an important test used to assess nasal function and spirometry is an important tool used in asthmatic children. The degree to which the readouts of these tests are correlated has yet to be established. We sought to clarify the relationship between rhinomanometry measurements, fractional exhaled nitric oxide (FeNO), and spirometric measurements in asthmatic children. METHODS: Patients' inclusion criteria: age between 5 and 18 years, history of asthma with nasal symptoms, and no anatomical deformities...
2016: PloS One
https://www.readbyqxmd.com/read/27783458/combined-use-of-fractional-exhaled-nitric-oxide-and-bronchodilator-response-in-predicting-future-loss-of-asthma-control-among-children-with-atopic-asthma
#12
Je-Kyung Kim, Jae-Yub Jung, Heon Kim, Sang-Yong Eom, Youn-Soo Hahn
BACKGROUND AND OBJECTIVE: Recognition of patients at risk of asthma exacerbation is important for future asthma care and improved outcome. The aim of the present study was to see whether measurements of bronchodilator response (BDR) and fractional exhaled nitric oxide (FeNO) in combination provide prognostic information superior to either measurement alone in children with atopic asthma. METHODS: A total of 201 atopic children aged 8-16 years with intermittent or mild persistent asthma were included...
October 26, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27777105/effects-of-occupational-exposure-to-poorly-soluble-forms-of-beryllium-on-biomarkers-of-pulmonary-response-in-exhaled-breath-of-workers-in-machining-industries
#13
Anca Radauceanu, Michel Grzebyk, Jean-Louis Edmé, Nathalie Chérot-Kornobis, Davy Rousset, Mathieu Dziurla, Virginie De Broucker, Guy Hédelin, Annie Sobaszek, Sébastien Hulo
OBJECTIVE: To analyze the effects of occupational exposure to poorly soluble forms of beryllium (Be) on biomarkers of pulmonary inflammation using exhaled breath condensate (EBC) in workers employed in machining industries. METHODS: Twenty machining operators were compared to 16 controls. The individual exposure to Be was assessed from the work history with several indices of exposure calculated on the basis of task-exposures matrices developed for each plant using historical air measurements...
October 21, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27776186/serum-reactive-oxygen-metabolite-levels-predict-severe-exacerbations-of-asthma
#14
Keitaro Nakamoto, Masato Watanabe, Mitsuru Sada, Toshiya Inui, Masuo Nakamura, Kojiro Honda, Hiroo Wada, Yu Mikami, Hirotaka Matsuzaki, Masafumi Horie, Satoshi Noguchi, Yasuhiro Yamauchi, Hikari Koyama, Toshiyuki Kogane, Tadashi Kohyama, Hajime Takizawa
BACKGROUND AND PURPOSE: Bronchial asthma (BA) is a chronic airway disease characterized by airway hyperresponsiveness and remodeling, which are intimately linked to chronic airway inflammation. Reactive oxygen species (ROS) such as hydrogen peroxide are generated by inflammatory cells that are involved in the pathogenesis of BA. However, the role of ROS in the management of BA patients is not yet clear. We attempted to determine the role of ROS as a biomarker in the clinical setting of BA...
2016: PloS One
https://www.readbyqxmd.com/read/27736038/multidisciplinary-treatment-in-children-with-problematic-severe-asthma-a-prospective-evaluation
#15
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
https://www.readbyqxmd.com/read/27731932/clinical-features-in-patients-of-cough-variant-asthma-with-normal-and-high-level-of-exhaled-fractional-nitric-oxide
#16
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. The clinical characteristics and pulmonary function in patients with CVA who had normal and high exhaled fractional nitric oxide (FeNO) levels were compared. METHODS: The clinical history and pulmonary function data from 99 patients with newly diagnosed CVA were collected. 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
https://www.readbyqxmd.com/read/27723955/halotherapy-as-asthma-treatment-in-children-a-randomized-controlled-prospective-pilot-study
#17
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
https://www.readbyqxmd.com/read/27713629/importance-of-fractional-exhaled-nitric-oxide-in-the-differentiation-of-asthma-copd-overlap-syndrome-asthma-and-copd
#18
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
https://www.readbyqxmd.com/read/27709308/evaluation-of-the-improvement-effect-of-laser-acupuncture-biostimulation-in-asthmatic-children-by-exhaled-inflammatory-biomarker-level-of-nitric-oxide
#19
Ola A Dabbous, Mona M Soliman, Nagwa H Mohamed, Magda Y Elseify, Mai S Elsheikh, Asmaa A A Alsharkawy, Manal M Abd Al Aziz
Variable therapy of asthma is not sufficient yet to achieve good asthma control. Therapy decision requires serial investigations. Low-level laser acupuncture is a suitable non-invasive modality of complementary medicine. The exhaled breath condensate (EBC) is easy and useful to evaluate the efficacy of drugs or novel therapy. This study aimed to evaluate the effectiveness of low-level laser biostimulation of acupuncture points on asthma improvement in children. Forty-eight asthmatic children were subdivided into case (laser) group, which received 12 direct contact low-power laser acupuncture sessions (three sessions/week) on specific traditional Chinese acupuncture points for bronchial asthma, and control asthmatic group, which received sham laser acupuncture on the same acupoints and number of sessions of the case (laser) group...
October 5, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27707661/could-fractional-exhaled-nitric-oxide-test-be-useful-in-predicting-inhaled-corticosteroid-responsiveness-in-chronic-cough-a-systematic-review
#20
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
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