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Exhaled nitric oxide

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https://www.readbyqxmd.com/read/29150612/health-impact-of-e-cigarettes-a-prospective-3-5-year-study-of-regular-daily-users-who-have-never-smoked
#1
Riccardo Polosa, Fabio Cibella, Pasquale Caponnetto, Marilena Maglia, Umberto Prosperini, Cristina Russo, Donald Tashkin
Although electronic cigarettes (ECs) are a much less harmful alternative to tobacco cigarettes, there is concern as to whether long-term ECs use may cause risks to human health. We report health outcomes (blood pressure, heart rate, body weight, lung function, respiratory symptoms, exhaled breath nitric oxide [eNO], exhaled carbon monoxide [eCO], and high-resolution computed tomography [HRCT] of the lungs) from a prospective 3.5-year observational study of a cohort of nine daily EC users (mean age 29.7 (±6...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150070/decreased-expression-of-indolamine-2-3-dioxygenase-in-childhood-allergic-asthma-and-its-inverse-correlation-with-fractional-concentration-of-exhaled-nitric-oxide
#2
Ying Hu, Zhiqiang Chen, Ling Jin, Mei Wang, Wei Liao
BACKGROUND: The tryptophan metabolic pathway mediated by indolamine 2,3-dioxygenase (IDO), a tryptophan-degrading enzyme, plays an important role in controlling the development of allergic inflammation. The fractional concentration of exhaled nitric oxide (FeNO) is closely associated with the allergic state and is extensively used for the clinical evaluation of airway allergic inflammation. Clinical trials have rarely assessed the expression of IDO in childhood allergic asthma and its correlation with FeNO...
November 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29149738/associations-of-urinary-polycyclic-aromatic-hydrocarbon-metabolites-with-fractional-exhaled-nitric-oxide-and-exhaled-carbon-monoxide-a-cross-sectional-study
#3
Yun Zhou, Yuewei Liu, Huizhen Sun, Jixuan Ma, Lili Xiao, Limin Cao, Wei Li, Bin Wang, Jing Yuan, Weihong Chen
Exposure to Polycyclic aromatic hydrocarbons (PAHs) has been associated with inflammatory responses. Fractional exhaled nitric oxide (FeNO) and exhaled carbon monoxide (eCO) are both important inflammatory mediators especially in airways. However, few studies have investigated associations of PAH exposures with FeNO or eCO. Therefore, we aimed to quantify the associations of urinary PAH metabolites with FeNO and eCO levels, and investigate their potential effect modifiers by linear mixed models among 4133 participants from the Wuhan-Zhuhai cohort in China...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29147071/exhaled-nitric-oxide-is-useful-in-symptomatic-radioactive-pneumonia-a-retrospective-study
#4
Jiancheng Li, Xiaobin Fu, Jie Fu
The aim was to defect the exhaled nitric oxide (eNO) prediction value of symptomatic radioactive pneumonia (SRP). 64 cases of lung cancer or esophagus cancer, who had the primary radiotherapy (intensity-modulated radiation therapy), were included from 2015 June to 2016 January. During the following, the patients were divided: the symptomatic radiation pneumonia group (SRP, with the CTCAE v4.0 score > 2) and the asymptomatic radiation pneumonia group (ASRP, with CTCAE v4.0 score ≤ 1). All the patients were measured eNO before and at the end of thoracic radiotherapy and gain the posttherapy eNO value and the eNO ratio (posttherapy eNO value/pretherapy eNO value), then the predictive values of eNO toward SRP were measured using the receiver-operating characteristic (ROC)...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29143374/asthma-and-lung-function-in-adulthood-after-a-viral-wheezing-episode-in-early-childhood
#5
Katri Backman, Hertta Ollikainen, Eija Piippo-Savolainen, Kirsi Nuolivirta, Matti Korppi
BACKGROUND: Viral etiology of infection has a significant role in the long-term outcome of early-childhood wheezing. OBJECTIVE: This study examines asthma and lung function in adulthood after early-childhood wheezing induced by respiratory syncytial virus (RSV) and rhinovirus (RV). METHODS: A total of 100 children were hospitalized for a wheezing episode at less than 24 months of age from 1992 to 1993 in Kuopio University Hospital (Finland)...
November 16, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29142522/drug-induced-eosinophilic-pneumonia-in-a-patient-with-crohn-s-disease-diagnosis-and-treatment-using-fraction-of-exhaled-nitric-oxide
#6
Jina Yeo, Hyun Sun Woo, Sang Min Lee, Yoon Jae Kim, Kwang An Kwon, Dong Kyun Park, Jung Ho Kim, Kyoung Oh Kim, Jun-Won Chung
Oral 5-aminosalicylic acid agents (mesalazine and sulfasalazine) and azathioprine are the mainstays of treatment for inflammatory bowel disease. Reports of pulmonary toxicity induced by oral 5-aminosalicylic acid agents or azathioprine in patients with inflammatory bowel disease are very rare; to date, only 38 cases have been reported worldwide. We, herein, report a case involving a 26-year-old man who was diagnosed with eosinophilic pneumonia after using mesalazine and azathioprine for the treatment of Crohn's disease and recovered after treatment...
October 2017: Intestinal Research
https://www.readbyqxmd.com/read/29133224/feno-and-exercise-testing-in-children-at-risk-of-asthma
#7
Ann-Marie Malby Schoos, Christina Figgé Christiansen, Jakob Stokholm, Klaus Bønnelykke, Hans Bisgaard, Bo Lund Chawes
BACKGROUND: Exercise testing is the gold standard for diagnosing exercise-induced bronchoconstriction in children, but requires considerable cooperation and medical resources. Therefore, fraction of exhaled nitric oxide (FeNO) has been proposed as a tool to predict the need for exercise testing. OBJECTIVE: The objective of this study was to investigate the relationship between FeNO, exercise test results, and a history of respiratory symptoms during exercise in children at risk of asthma...
November 10, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29133220/effects-of-exercise-and-diet-in-nonobese-asthma-patients-a-randomized-controlled-trial
#8
Louise Lindhardt Toennesen, Howraman Meteran, Morten Hostrup, Nina Rica Wium Geiker, Camilla Bjoern Jensen, Celeste Porsbjerg, Arne Astrup, Jens Bangsbo, Debbie Parker, Vibeke Backer
BACKGROUND: Behavioral interventions focusing on exercise and healthy diet improve asthma control in obese patients with asthma, but whether these interventions can lead to improvements in nonobese patients remains unclear. OBJECTIVES: In a randomized, controlled parallel-group design, we studied the effects of an 8-week intervention of either exercise (high-intensity interval training), diet (high protein/low glycemic index), or a combination of the 2, on asthma control and clinical outcomes in nonobese patients with asthma...
November 10, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29128336/the-value-of-fractional-exhaled-nitric-oxide-and-forced-mid-expiratory-flow-as-predictive-markers-of-bronchial-hyperresponsiveness-in-adults-with-chronic-cough
#9
Wuping Bao, Xue Zhang, Chengjian Lv, Luhong Bao, Junfeng Yin, Zhixuan Huang, Bing Wang, Xin Zhou, Min Zhang
BACKGROUND: Bronchial provocation tests are standard for diagnosing the etiology of chronic cough, but they are time consuming and can induce severe bronchospasm. A safer and faster clinical examination to predict bronchial hyperresponsiveness (BHR) is needed. OBJECTIVE: The objective of this study was to investigate whether small-airway function tests can predict BHR in adult patients with chronic cough. METHODS: A retrospective, cross-sectional study of diagnoses made using spirometry and bronchial provocation test results was performed in 290 patients with chronic nonproductive cough...
November 8, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29124506/heart-rate-variability-biofeedback-does-not-substitute-for-asthma-steroid-controller-medication
#10
Paul M Lehrer, Charles G Irvin, Shou-En Lu, Anthony Scardella, Beatrix Roehmheld-Hamm, Milisyaris Aviles-Velez, Jessica Graves, Evgeny G Vaschillo, Bronya Vaschillo, Flavia Hoyte, Harold Nelson, Frederick S Wamboldt
Despite previous findings of therapeutic effects for heart rate variability biofeedback (HRVB) on asthma, it is not known whether HRVB can substitute either for controller or rescue medication, or whether it affects airway inflammation. Sixty-eight paid volunteer steroid naïve study participants with mild or moderate asthma were given 3 months of HRVB or a comparison condition consisting of EEG alpha biofeedback with relaxing music and relaxed paced breathing (EEG+), in a two-center trial. All participants received a month of intensive asthma education prior to randomization...
November 9, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/29118577/associations-between-occupational-inhalation-risks-and-feno-levels-in-airway-obstruction-patients-results-from-the-national-health-and-nutrition-examination-survey-2007-2012
#11
Yi-Chih Huang, Mei-Chen Yang
Purpose: To investigate associations between occupational inhalation risks and fractional exhaled nitric oxide (FeNO) levels in patients with chronic obstructive pulmonary disease (COPD). Patients and methods: Data of 16,486 subjects who had undergone spirometry with pre-bronchodilator and post-bronchodilator lung function assessment were retrieved from the National Health and Nutrition Examination Survey, 2007-2012 database. After excluding 2,638 subjects with missing spirometry values, data of 13,336 subjects were included for analysis...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29110960/the-clinical-role-of-fractional-exhaled-nitric-oxide-in-asthma-control
#12
Suguru Sato, Junpei Saito, Atsuro Fukuhara, Manabu Uematsu, Yasuhito Suzuki, Ryuichi Togawa, Yuki Sato, Takefumi Nikaido, Xintao Wang, Yoshinori Tanino, Mitsuru Munakata
BACKGROUND: The potential role and characteristics of fractional exhaled nitric oxide (FeNO) remain unclear in the treatment of asthma. OBJECTIVE: To explore the clinical role of FeNO in asthmatic treatment. METHODS: We evaluated whether the mean or change of FeNO levels in the treatment period is associated with other conventional control parameters and predicted some clinical outcomes of asthma. We retrospectively analyzed the mean and percentage change of FeNO levels in the first 5 measurements at our hospital...
October 27, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29110343/a-possible-way-to-assess-tidal-exhaled-nitric-oxide-in-neonates-and-infants-treated-with-nasal-continuous-positive-airway-pressure
#13
Birgitte Johanne Schmidt, Pauline Schibler Reim, Ole Find Pedersen, Per Albertsen, Gorm Greisen, Inger Merete Jørgensen
The endogenous compound nitric oxide (NO) is released into the airways via inducible NO synthase (1),which has the capacity to produce NO when up-regulated by pro-inflammatory cytokines or exogenous factors, like hypoxia, bacterial toxins and viruses (2). Prematurely born infants are susceptible to various acute and chronic respiratory diseases, such as respiratory distress syndrome and bronchopulmonary dysplasia (BPD). BPD involves a range of lung function abnormalities and increases the risk of re-hospitalisation (3)...
November 6, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/29108938/fractional-exhaled-nitric-oxide-as-a-predictor-of-response-to-inhaled-corticosteroids-in-patients-with-non-specific-respiratory-symptoms-and-insignificant-bronchodilator-reversibility-a-randomised-controlled-trial
#14
David B Price, Roland Buhl, Adrian Chan, Daryl Freeman, Elizabeth Gardener, Clifford Godley, Kevin Gruffydd-Jones, Lorcan McGarvey, Ken Ohta, Dermot Ryan, Jörgen Syk, Ngiap Chuan Tan, TzeLee Tan, Mike Thomas, Sen Yang, Priyanka Raju Konduru, Marcus Ngantcha, Martina Stagno d'Alcontres, Therese S Lapperre
BACKGROUND: Chronic non-specific respiratory symptoms are difficult to manage. This trial aimed to evaluate the association between baseline fractional exhaled nitric oxide (FeNO) and the response to inhaled corticosteroids in patients with non-specific respiratory symptoms. METHODS: In this double-blind randomised placebo-controlled trial, we enrolled undiagnosed patients, aged 18-80 years, with cough, wheeze, or dyspnoea and less than 20% bronchodilator reversibility across 26 primary care centres and hospitals in the UK and Singapore...
November 3, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/29094021/the-asthma-and-chronic-obstructive-pulmonary-disease-overlap-syndrome-in-tertiary-care-setting-thailand
#15
Theerasuk Kawamatawong, Sanruethai Charoenniwassakul, Ticha Rerkpattanapipat
Background: Asthma and chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) is an increasingly recognized clinical entity. ACOS significantly impacts on patient outcome compared to isolated asthma or COPD. However, ACOS definition and diagnosis criteria have not been well standardized. ACOS prevalence and clinical features in Thailand has never been studied. Objective: To investigate the prevalence and clinical features of ACOS compared to isolated asthma or COPD among patients with clinician-diagnosis of obstructive airway diseases...
October 2017: Asia Pacific Allergy
https://www.readbyqxmd.com/read/29074699/fractional-exhaled-nitric-oxide-monitoring-in-paediatric-asthma-management
#16
Nicholas R Jones, Kay Wang, Yaling Yang, Carl Heneghan, Christopher P Price, Ann Van den Bruel, Annette Plüddemann
No abstract text is available yet for this article.
November 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/29068321/relationship-between-total-serum-immunoglobulin-e-levels-fractional-exhaled-breath-nitric-oxide-levels-and-absolute-blood-eosinophil-counts-in-atopic-and-non-atopic-asthma-a-controlled-comparative-study
#17
Sanjeet Krishna Shrestha, Arne Drews, Lucky Sharma, Subash Pant, Sanjeev Shrestha, Arpana Neopane
ABSTRACT Introduction Asthma is a prevalent non communicable disease both in low and high income countries, including Nepal. Total serum immunoglobulin E levels and peripheral blood absolute eosinophil counts are known inflammatory markers of asthma. And Fractional Exhaled Nitric Oxide measure in breath has also been proposed as a non-invasive biomarker to assess eosinophilic airway inflammation. This study explores the correlation between these three variables with intent that one may replace the other in resource limited setup...
October 25, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/29066920/study-of-the-clinical-and-functional-characteristics-of-asthmatic-children-with-obstructive-sleep-apnea
#18
Yen Nguyen-Hoang, Thuy Nguyen-Thi-Dieu, Sy Duong-Quy
BACKGROUND AND OBJECTIVE: The obstructive sleep apnea (OSA) is a common respiratory disorder in children, especially those at preschool and school ages. This study aimed to describe the characteristics of asthmatic children with OSA and the symptoms for a high risk of OSA. SUBJECTS AND METHODS: It was a prospective and descriptive study. The data of asthmatic children including medical history, clinical examination, blood tests, spirometry, exhaled nitric oxide (NO), and respiratory polygraphy were registered for analyses...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/29066918/asthma-with-bronchial-hypersecretion-expression-of-mucins-and-toll-like-receptors-in-sputum-and-blood
#19
Astrid Crespo-Lessmann, Eder Mateus, Montserrat Torrejón, Alicia Belda, Jordi Giner, Silvia Vidal, Oriol Sibila, Vicente Plaza
Asthma with bronchial hypersecretion is a type of asthma that is poorly studied. Its pathogenesis is not well understood, but is probably related to innate impaired immunity, particularly with toll-like receptors (TLRs) and secretory mucins (MUC). OBJECTIVES: 1) Define the clinical and inflammatory phenotype of asthma with bronchial hypersecretion of mucus. 2) Compare the type of mucin present in induced sputum (IS) of patients with and without bronchial hypersecretion. 3) Determine the expression of TLRs in IS and blood of asthmatics with and without bronchial hypersecretion...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/29066290/phenotype-classification-using-the-combination-of-lung-sound-analysis-and-fractional-exhaled-nitric-oxide-for-evaluating-asthma-treatment
#20
Terufumi Shimoda, Yasushi Obase, Yukio Nagasaka, Sadahiro Asai
BACKGROUND: We report the utility of combining lung sound analysis and fractional exhaled nitric oxide (FeNO) for phenotype classification of airway inflammation in patients with bronchial asthma. We investigated the usefulness of the combination of the expiration-to-inspiration sound power ratio in the mid-frequency range (E/I MF) of 200-400 Hz and FeNO for comprehensively classifying disease type and evaluating asthma treatment. METHODS: A total of 233 patients with bronchial asthma were included...
October 21, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
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