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| 2. |
- Nerpin, Elisabet, 1962-, et al.
(författare)
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Blood cell counts and C-reactive protein inrelation to lung function in NHANES 2007-2010
- 2018
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Background:Low-grade systemic inflammation is associated with impaired lung function. Few studies have examined if C-reactive protein (CRP), blood eosinophil (B-Eos), and blood neutrophil (B-Neu) counts offer additive information in relation to lung function. The aim of this study was to analyse associations between CRP, BEos, and B-Neu and effects on lung function, with special regards to additive information.Methods:Cross-sectional study on 7,753 participants, 20-80 years of age, in the National Health and Nutrition Examination Survey. Gender-based tertiles for CRP, B-Eos, and B-Neu were analyzed in relation to forced expiratory volume in 1 second (FEV1 % predicted), forced vital capacity (FVC % predicted), and FEV1/FVC ratio.Results:CRP, B-Eos, and B-Neu were inversely related to FEV1 and FVC. Only B-Eos and B-Neu were inversely related to FEV1/FVC ratio. Further, lower lung function was found with increased number of elevatedinflammatory markers in the highest tertile (one, two or three vs. non elevated) for FEV1 (% predicted): β-coefficients (95% CI) -2.20(-2.98, -1.41), -4.43 (-5.39, -3.45), and -6.43(-8.07, -4.79), all P=0.001; FVC (% predicted): -1.70 (-2.42, -0.98), -3.17 (-4.06, -2.29), and -5.34 (-6.85, -3.84), all P=0.001.Conclusion:CRP, B-Eos, and B-Neu offer independent and additive information in relation to lower FEV1 and FVC in the general population. This indicates that a combination of biomarkers yields more information than the biomarkers assessed individually. The mechanisms appear to be different, as B-Neu and B-Eos seem to relate more closely to obstructive impairment, e.g., lower FEV1/FVC ratio, which was not found for CRP.
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- Nerpin, Elisabet, 1962-, et al.
(författare)
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Determinants of fractional exhaled nitric oxide in healthy men and women from the European Community Respiratory Health Survey III
- 2019
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Ingår i: Clinical and Experimental Allergy. - : Wiley. - 0954-7894 .- 1365-2222. ; 49:7, s. 969-979
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Tidskriftsartikel (refereegranskat)abstract
- Introduction The fractional exhaled nitric oxide (FENO) is a marker for type 2 inflammation used in diagnostics and management of asthma. In order to use FENO as a reliable biomarker, it is important to investigate factors that influence FENO in healthy individuals. Men have higher levels of FENO than women, but it is unclear whether determinants of FENO differ by sex. Objective To identify determinants of FENO in men and women without lung diseases. Method Fractional exhaled nitric oxide was validly measured in 3881 healthy subjects that had answered the main questionnaire of the European Community Respiratory Health Survey III without airways or lung disease. Results Exhaled NO levels were 21.3% higher in men compared with women P < 0.001. Being in the upper age quartile (60.3-67.6 years), men had 19.2 ppb (95% CI: 18.3, 20.2) higher FENO than subjects in the lowest age quartile (39.7-48.3 years) P = 0.02. Women in the two highest age quartiles (54.6-60.2 and 60.3-67.6 years) had 15.4 ppb (14.7, 16.2), P = 0.03 and 16.4 ppb (15.6, 17.1), P = FENO, compared with the lowest age quartile. Height was related to 8% higher FENO level in men (P < 0.001) and 5% higher FENO levels in women (P = 0.008). Men who smoked had 37% lower FENO levels and women had 30% lower levels compared with never-smokers (P < 0.001 for both). Men and women sensitized to both grass and perennial allergens had higher FENO levels compared with non-sensitized subjects 26% and 29%, P Fractional exhaled nitric oxide levels were higher in men than women. Similar effects of current smoking, height, and IgE sensitization were found in both sexes. FENO started increasing at lower age in women than in men, suggesting that interpretation of FENO levels in adults aged over 50 years should take into account age and sex.
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- Nerpin, Elisabet, 1962-, et al.
(författare)
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Different relation between exhaled nitric oxide and lung function with regard to current smoking
- 2018
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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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| 6. |
- Nerpin, Elisabet, 1962-, et al.
(författare)
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Systemic inflammatory markers in relation to lung function in NHANES. 2007–2010
- 2018
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Ingår i: Respiratory Medicine. - : Elsevier BV. - 0954-6111 .- 1532-3064. ; 142, s. 94-100
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Tidskriftsartikel (refereegranskat)abstract
- Background Low-grade systemic inflammation, mainly assessed by C-reactive protein (CRP), has been associated with impaired lung function. Few studies have studied if CRP, blood eosinophils, and blood neutrophils offer additive information in relation to lung function. Objectives To analyse associations between lung function and CRP, blood eosinophils, and blood neutrophils, with special regard to additive information of combining the inflammatory markers. Methods Cross-sectional study on 7753 participants, 20–80 years of age, in the National Health and Nutrition Examination Survey. Gender-based tertiles for CRP, blood eosinophils, and blood neutrophils were analysed in relation to the following lung function parameters: forced expiratory volume in 1 s (FEV1% predicted), forced vital capacity (FVC % predicted), and FEV1/FVC ratio. Results CRP, blood eosinophils, and blood neutrophils levels were inversely related to FEV1 and FVC. Only blood eosinophils and blood neutrophils were inversely related to FEV1/FVC ratio. Further, lower lung function was found with increased number of elevated inflammatory markers in the highest tertile (one, two or three vs. non elevated) for FEV1 (β-coeff., −2.20, −4.43, and −6.43, p < 0.001) and FVC (β-coeff., −1.70, −3.15 and −5.33, p < 0.001), respectively. Conclusions & clinical relevance CRP, blood eosinophils, and blood neutrophils offer independent and additive information in relation to lower FEV1 and FVC in the general population. This indicates that a combination of biomarkers yields more information than the biomarkers assessed individually.
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