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Increased exhaled nitric oxide in patients with stable chronic obstructive pulmonary disease

Open access
Corradi, M., Majori, M., Cacciani, G. C., Consigli, G. F., de'Munari, E., Pesci, A.·1999·Thorax

Abstract

BACKGROUND: Nitric oxide (NO) plays an important role as an inflammatory mediator in the airways. Since chronic obstructive pulmonary disease (COPD) is characterised by airway inflammation, a study was undertaken to determine NO levels in the exhaled air of patients with COPD. METHODS: Two groups of patients with clinically stable COPD were studied, 10 current smokers and 10 ex-smokers. Two control groups of healthy subjects consisting of 10 current smokers and 20 non-smokers were also studied. Exhaled NO levels were measured by the collection bag technique and NO chemiluminescence analyser. RESULTS: Mean (SE) levels of exhaled NO in ex-smokers and current smokers with COPD (25.7 (3.0) ppb and 10.2 (1.4) ppb, respectively) were significantly higher than in non-smoker and current smoker control subjects (9.4 (0.8) ppb and 4.6 (0.4) ppb, respectively). In current smokers with COPD exhaled levels of NO were significantly lower than in ex-smokers. In this latter group of patients there was a significant negative correlation between smoking history (pack years) and levels of exhaled NO (r = -0.8, p = 0.002). A positive correlation was seen between forced expiratory volume in one second (FEV1) and levels of exhaled NO (r = 0.65, p = 0.001) in patients with COPD. CONCLUSIONS: These data show that exhaled NO is increased in patients with stable COPD, both current and ex-smokers, compared with healthy control subjects.

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Metadata

Authors
Corradi, M., Majori, M., Cacciani, G. C., Consigli, G. F., de'Munari, E., & Pesci, A.
Venue
Thorax
Publisher
BMJ
Published
1999-07-01
Volume
54
Issue
7
Pages
572-575
ISSN
0040-6376 (ISSN-L)
OpenAlex
W2161768389
Cited by
167
References
2
FWCI
10.08
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Increased exhaled nitric oxide in patients with stable chronic obstructive pulmonary disease. https://app.cochat.ai/papers/10.1136/thx.54.7.572
The paper
Corradi, M., Majori, M., Cacciani, G. C., Consigli, G. F., de'Munari, E., & Pesci, A. (1999). Increased exhaled nitric oxide in patients with stable chronic obstructive pulmonary disease. Thorax. https://doi.org/10.1136/thx.54.7.572

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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