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Serum bilirubin is associated with lung function in a Swiss general population sample

Curjuric, Ivan and Imboden, Medea and Adam, Martin and Bettschart, Robert W. and Gerbase, Margaret W. and Künzli, Nino and Rochat, Thierry and Rohrer, Lucia and Rothe, Thomas B. and Schwartz, Joel and Stolz, Daiana and Tschopp, Jean-Marie and von Eckardstein, Arnold and Kronenberg, Florian and Probst-Hensch, Nicole M.. (2014) Serum bilirubin is associated with lung function in a Swiss general population sample. The European respiratory journal, 43 (5). pp. 1278-1288.

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Official URL: http://edoc.unibas.ch/dok/A6263093

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Abstract

Bilirubin is a strong antioxidant. Increased serum levels have been associated with lower respiratory disease and mortality risk. We studied the association of bilirubin with lung function in the Swiss study on Air Pollution and Lung Disease in adults (SAPALDIA) cohort. Associations between natural logarithmised bilirubin and forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), FEV1/FVC and mean forced expiratory flow between 25%-75% of FVC (FEF25-75%) were tested using multiple linear regression in the whole study population (n=4195) and strata of ever-smoking and high body mass index (BMI, defined by the highest distribution quartile). Associations were retested with single nucleotide polymorphism rs6742078, a genetic determinant of bilirubin. High bilirubin levels were significantly associated with higher FEV1/FVC and FEF25-75% overall. Upon stratification, significant associations persisted in ever-smokers, amounting to 1.1% (95% CI 0.1-2.2%) increase in FEV1/FVC, and 116.2 mL·s(-1) (95% CI -15.9-248.4 mL·s(-1)) in FEF25-75% per interquartile range of bilirubin exposure in smokers with high BMI. Associations were positive but nonsignificant in never-smokers with high BMI. Similarly, rs6742078 genotype TT was associated with increased FEV1/FVC and FEF25-75%. Our results suggest a possible protective role of bilirubin on lung tissue, which could be important for prevention and therapy.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Chronic Disease Epidemiology > Exposome Science (Probst-Hensch)
03 Faculty of Medicine > Departement Public Health > Sozial- und Präventivmedizin > Exposome Science (Probst-Hensch)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
UniBasel Contributors:Curjuric, Ivan and Imboden, Medea and Adam, Martin and Künzli, Nino and Probst Hensch, Nicole
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Munksgaard
ISSN:0903-1936
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:18 Dec 2018 16:12
Deposited On:18 Jul 2014 09:10

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