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Sökning: WFRF:(Olin AC)

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  • Nerpin, Elisabet, 1962-, et al. (författare)
  • Different relation between exhaled nitric oxide and lung function with regard to current smoking
  • 2018
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • Background: Exhaled nitric oxide (FeNO) is a non-invasive marker of airway inflammation. Smokingreduces FeNO by 30-60%. Weak positive relation between lung function and FeNO has been inconsistently described. This has not been separately for smokers. Therefore we investigated the relation between lung function and FeNO with regard to smoking.Methods: FeNO and lung function post-bronchodilation (BD) were measured in 4813 subjects from the European Community Respiratory Health Survey III. GLI reference values were used. Smoking habits were self-reported.Results: Current smokers with FEV1 Conclusion: Higher FeNO relates with lower FEV1 and FEV1/FVC-ratio among non-smoking individuals, suggesting that the obstruction is related with airways inflammation. In current smokers, higher FeNO relates with better preserved lung function and this finding warrants further studies to understand the underlying mechanisms. Presented on behalf of ECRHS III (www.ecrhs.org)
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  • Olin, AC, et al. (författare)
  • Increased nitric oxide in exhaled air after intake of a nitrate-rich meal.
  • 2001
  • Ingår i: Respiratory medicine. - : Elsevier BV. - 0954-6111. ; 95:2, s. 153-8
  • Tidskriftsartikel (refereegranskat)abstract
    • Exhaled and nasal NO (ENO, NNO) have been suggested as markers for inflammation in lower and upper respiratory tract respectively. It is still unknown how a number of factors, apart from airway inflammation, can influence NO levels. The aim of this study was to determine the effect of a nitrate-rich meal on ENO and NNO. Sixteen healthy subjects were observed during 1 week on normal diet before a nitrate-restricted diet was introduced in the next. On day 3 of the second week they were made to ingest a nitrate rich meal. ENO, NNO, plasma nitrate and plasma L-arginine were followed before the meal and afterwards for 3 h. ENO and NNO as well as plasma nitrate and plasma L-arginine were significantly elevated after the nitrate-rich meal. The median maximal increase of ENO and NNO was 47% and 13% respectively. We found a moderate but significant correlation between the rise in plasma nitrate and ENO (r(s)=0.57, P=0.027) but none between plasma nitrate and NNO (r(s)=-0.02, P=0.95). As nitrate in the diet seems to substantially influence the levels of ENO it is important either to restrict or register the intake of nitrate-rich food prior to measuring ENO.
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