Exhaled nitric oxide in overweight and obese asthma patients compared to normal weight asthmatic patients

2019 ◽  
Author(s):  
Khalil Ansarin ◽  
Ansiyeh Seyedrezazadeh
Keyword(s):  
Nitric Oxide ◽  
Exhaled Nitric Oxide ◽  
Normal Weight ◽  
Asthmatic Patients ◽  
Asthma Patients

The Utility of Serum IL-1β and CRP Together with Fractional Exhaled Nitric Oxide in the Diagnosis of Asthma in Adults

2021 ◽  
Vol 19 (8) ◽  
pp. 119-124
Author(s):  
Hayder Abdul-Amir Makki Al-Hindy ◽  
Ali Jihad Hemid Al-Athari ◽  
Mazin J. Mousa ◽  
Safa Jihad Hameed ◽  
Suhad Hafidh Obeed
Keyword(s):  
Nitric Oxide ◽  
Sensitivity And Specificity ◽  
Bronchial Asthma ◽  
High Sensitivity ◽  
Exhaled Nitric Oxide ◽  
Fractional Exhaled Nitric Oxide ◽  
Asthmatic Patients ◽  
Significant Difference ◽  
Asthma Patients ◽  
Hs Crp

Background: Bronchial asthma (BrA), recognized lately as an umbrella, covers various subtypes rather than only one disease. Asthma is a chronic inflammation of the airways, in which cytokines could play a crucial role in its pathogenesis. Hence, labors to progress noninvasive markers for asthma had centered through this era. Presently, the fractional exhaled nitric oxide (FeNO), serum C-reactive protein (CRP), and interleukin levels are emerging analytical biomarkers in this field. FeNO is a noninvasive and practical tool even in mild asthma. This study aimed to evaluate the utility of serum IL-1β and CRP together with fractional exhaled nitric oxide in the diagnosis of adult bronchial asthma. Method: The study was a case control, including 150-patients and 100-healthy controls. FeNO tests, measurements of plasma levels IL-1β and HS-CRP had undertaken for all the participants. The statistical data had examined by SPSS (V/27) for Windows. Descriptive data of the variables had compatibly used. A significance lower than or identical to 0.05 had intended. ROC curve examination of FeNO tests, IL-1β, and HS-CRP, to predict asthma from healthy control had applied. Results: there was a significant difference in the FeNo test, HS-CRP levels, and BMI, while no significant difference in all other variables between the groups. The FeNo results correlate positively, though not significantly, with the levels of IL-1β in asthmatic patients (> 0.05). There was a nonsignificant negative correlation between the FeNo results with the level of HSCRP. The accuracy, sensitivity, and specificity of the IL-1β to distinguish asthma were 68.6% and 58% at 95% CI [0.41-0.745], respectively, which was not significant (p>0.05). However, ROC analysis of HS-CRP revealed predictability for asthma patients (p-0.000), with higher accuracy, sensitivity, and specificity: 89.9%, and 68.1% at 95% CI [0.820-0.979], respectively. The FeNo tests revealed highly significant (0.000), high sensitivity, and specific (91% for both) with high 95% CI [0.938-1.000] predictability for asthma. Conclusion: The utility of circulating HS-CRP is more valuable than IL-1β when combined with fractional exhaled nitric oxide in the diagnosis of asthma. Novel biomarkers could improve the precision of this field.

The effect of omalizumab on small airway inflammation as measured by exhaled nitric oxide in moderate-to-severe asthmatic patients

2014 ◽  
Vol 35 (3) ◽  
pp. 241-249 ◽  
Author(s):  
M. Asghar Pasha ◽  
David Jourd'heuil ◽  
Francis Jourd'heuil ◽  
Lori Mahon ◽  
Francisco Romero ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Airway Inflammation ◽  
Exhaled Nitric Oxide ◽  
Small Airway ◽  
Asthmatic Patients ◽  
Severe Asthmatic

scholarly journals The efficacy of the combination of exhaled nitric oxide and blood eosinophil count in the diagnosis of asthma in China

2020 ◽  
Author(s):  
Jiang-hua Li ◽  
Rui Han ◽  
Yu-bo Wang ◽  
Min Cheng ◽  
Heng-yi Chen ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Characteristic Curve ◽  
Positive Likelihood Ratio ◽  
Exhaled Nitric Oxide ◽  
Airflow Limitation ◽  
Blood Eosinophil ◽  
Asthma Diagnosis ◽  
Diagnostic Efficacy ◽  
Asthma Patients ◽  
In Series

Abstract BackgroundTests to identify reversible airflow limitation are important in asthma diagnosis, but they are time-consuming and may be difficult for patients to cooperate. We aim to evaluate the predictive value of fractional exhaled nitric oxide (FeNO) and blood eosinophil (B-Eos) count in asthma diagnosis, and to distinguish patients who could avoid reversibility testing.MethodsWe screened 7463 suspected asthma cases between January 2014 and December 2019 in Chongqing, China, and identified 2349 patients with complete FeNO, B-Eos count, and spirometry data. Of these, 824 were diagnosed with asthma via a positive bronchial-provocation or bronchodilation test.ResultsWhen FeNO and B-Eos counts were used in combination, the area under the receiver operating characteristic curve (AUC) for diagnosing asthma increased (0.768 vs. 0.745 or 0.728; both P < 0.001). The odds ratio for having asthma increased progressively with a gradual increase in FeNO or B-Eos count (both P < 0.001). Further analysis of in-series combinations of different threshold values for these biomarkers indicated that moderately elevated biomarker levels (FeNO > 40 ppb and B-Eos > 300 cells/μl) support a diagnosis of asthma because diagnostic specificity was > 95% and the positive likelihood ratio (PLR) was > 10. This conclusion was verified when selecting the data from 2017 to 2019 as the verification cohort.ConclusionThe combination of FeNO and B-Eos count can improve diagnostic efficacy for asthma. Patients with moderately elevated biomarkers (FeNO > 40 ppb and B-Eos > 300 cells/μl) could be diagnosed with asthma.

Dose-Response Relationship and Reproducibility of the Fall in Exhaled Nitric Oxide After Inhaled Beclomethasone Dipropionate Therapy in Asthma Patients

CHEST Journal ◽  
2001 ◽  
Vol 119 (5) ◽  
pp. 1322-1328 ◽  
Author(s):  
Philip E. Silkoff ◽  
Patricia McClean ◽  
Michael Spino ◽  
Lu Ann Erlich ◽  
Arthur S. Slutsky ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Dose Response ◽  
Beclomethasone Dipropionate ◽  
Exhaled Nitric Oxide ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Asthma Patients

Oxidative Stress and Pteridines in Pediatric Asthma: Relationship to Exhaled Nitric Oxide

Pteridines ◽  
2012 ◽  
Vol 23 (1) ◽  
pp. 104-109 ◽  
Author(s):  
Taisuke Takeda ◽  
Takashi Hamazaki ◽  
Ryohei Wakahara ◽  
Hiroki Fujioka ◽  
Shizuhiro Niihira ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Pediatric Asthma ◽  
Allergic Inflammation ◽  
Reactive Oxygen ◽  
Exhaled Nitric Oxide ◽  
Oxidative Stress Marker ◽  
Reactive Oxygen Metabolites ◽  
Asthmatic Patients ◽  
Airway Injury

Abstract Fractional exhaled nitric oxide (FeNO) is a useful marker of airway inflammation in asthmatics. Nitric oxide synthase (NOS) requires tetrahydrobiopterin as a cofactor and produces superoxide during NO generation. Therefore, we investigated the relationship of FeNO to pteridine biosynthesis and oxidative stress in pediatric asthma patients. We recruited 67 asthmatic children for FeNO measurement and examined neopterin, biopterin, and Diacron-reactive oxygen metabolites (d-ROMs) as an oxidative stress marker in both summer and winter. Although d-ROMs levels did not show significant correlation with FeNO levels in summer, d-ROMs and FeNO were positively correlated in winter (p <0.05). Both neopterin and biopterin levels in the blood tended to be lower in patients who showed higher FeNO. Multivariate analysis revealed that increased IgE levels correlated with increased FeNO (p <0.01) and decreased neopterin (p <0.05) levels. This data supports a mechanism by which decreased levels of pteridines promote reactive oxygen species production upon NO generation, resulting in airway injury in asthmatic patients. Correlation with IgE level indicates that Th2-mediated allergic inflammation is involved in this process.

scholarly journals Extended Exhaled Nitric Oxide Analysis in Interstitial Lung Diseases: A Systematic Review

2020 ◽  
Vol 21 (17) ◽  
pp. 6187
Author(s):  
Paolo Cameli ◽  
Elena Bargagli ◽  
Laura Bergantini ◽  
Miriana d’Alessandro ◽  
Maria Pieroni ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Lung Diseases ◽  
Interstitial Lung Diseases ◽  
Exhaled Nitric Oxide ◽  
Inhalation Therapy ◽  
Asthmatic Patients ◽  
Promising Tool ◽  
Multiple Flows ◽  
Published Evidence

Fractional exhaled nitric oxide (FeNO) is a well-known and widely accepted biomarker of airways inflammation that can be useful in the therapeutic management, and adherence to inhalation therapy control, in asthmatic patients. However, the multiple-flows assessment of FeNO can provide a reliable measurement of bronchial and alveolar production of NO, supporting its potential value as biomarker also in peripheral lung diseases, such as interstitial lung diseases (ILD). In this review, we first discuss the role of NO in the pathobiology of lung fibrosis and the technique currently approved for the measurement of maximum bronchial flux of NO (J’awNO) and alveolar concentration of NO (CaNO). We systematically report the published evidence regarding extended FeNO analysis in the management of patients with different ILDs, focusing on its potential role in differential diagnosis, prognostic evaluation and severity assessment of disease. The few available data concerning extended FeNO analysis, and the most common comorbidities of ILD, are explored too. In conclusion, multiple-flows FeNO analysis, and CaNO in particular, appears to be a promising tool to be implemented in the diagnostic and prognostic pathways of patients affected with ILDs.

scholarly journals Long-Term Adjustment of Stable Asthma Treatment with Fractional Exhaled Nitric Oxide and Sputum Eosinophils

2012 ◽  
Vol 10 (3) ◽  
pp. 383-392 ◽  
Author(s):  
M. Malerba ◽  
B. Ragnoli ◽  
A. Radaeli ◽  
F.L.M. Ricciardolo
Keyword(s):  
Nitric Oxide ◽  
Airway Hyperresponsiveness ◽  
Pulmonary Function Tests ◽  
Exhaled Nitric Oxide ◽  
Steroid Treatment ◽  
Asthmatic Patients ◽  
Steroid Dose ◽  
Sputum Eosinophils ◽  
The Difference

Current approaches to control asthma do not involve direct assessment of airway inflammation. The aim of this study is to assess whether the therapeutic adjustments of steroid treatment according to a stepwise algorithm based on sputum Eosinophils (sEos) and fractioned exhaled Nitric Oxide (FeNO) were effective in maintaining the stability of a group of stable asthmatic patients during a twelvemonth follow-up. Fourteen asthmatic patients, treated for asthma according to a previously published protocol, were enrolled in the study. The patients underwent clinical evaluation, pulmonary function tests, measuring of airway hyperresponsiveness to methacholine, and determination of FeNO and sEos at visit 1. These procedures were repeated after 6 and 12 months (Visits 2 and 3, respectively). Symptoms score gradually improved during the study (p=0.008), no changes were observed in the frequency of clinical asthma exacerbations or in airway hyperresponsiveness to methacholine. At the end of the study both sEos and FeNO were significantly improved (p=0.011 and p=0.003, respectively) and at visit 3 the median steroid dose was reduced (p=0.039) in accordance with the improving of symptoms score, FeNO and sEos values. A direct relationship was observed between the difference of FeNO values and the difference of sEos registered between visits 1 and 2 (r2=609, p0.001) and between visits 2 and 3 (r2=646, p<0.001). In conclusion, long-term titration of asthma inhaled steroid treatment based on sEos and FeNO values was able to provide long-term clinical stability and improvement to the asthmatic patients studied, without significant increases in the steroid dose.

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