The association between serum bilirubin levels and colorectal cancer risk: Results from the prospective cooperative health research in the region of Augsburg (KORA) in Germany.
Antioxidants 9:908 (2020)
Emerging studies have suggested that bilirubin, particularly unconjugated bilirubin (UCB), has substantial anti-inflammatory and antioxidant properties that protect against oxidative stress-associated diseases such as cancer. Few observational studies have investigated the etiological role of bilirubin in colorectal cancer (CRC) development. In this case-control study, nested in the population-based prospective cohort of the Cooperative Health Research in the Region of Augsburg (KORA) study in south Germany, pre-diagnostic circulating UCB concentrations were measured by high-performance liquid chromatography in 77 CRC cases and their individually matched controls. Multivariable unconditional logistic regression was used to estimate the odds ratios (OR) and 95% confidence intervals (CI) for associations between log-transformed UCB levels (log-UCB), standardized per one-standard-deviation (one-SD) increment, and CRC risk. The models were a priori stratified by sex based on previous evidence. In the fully adjusted models, each one-SD increment in log-UCB was indicative of a positive association with CRC risk (OR, 1.20; 95% CI, 0.52-2.79) among men, and of an inverse association (OR, 0.76; 95% CI, 0.34-1.84) among women (P-heterogeneity = 0.4 for differences between men and women). We found little evidence for sex-specific associations of circulating bilirubin with CRC risk, and further studies are needed to confirm or refute the potential associations.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Bilirubin ; Unconjugated Bilirubin ; Cancer ; Colorectal Cancer ; Antioxidants ; Kora; Oxidative Stress; Bile-pigments; Colon-cancer; Population; Ugt1a1; Antioxidant; Susceptibility; Polymorphisms; Tetrapyrroles; Inflammation
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Language
english
Publication Year
2020
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2020
ISSN (print) / ISBN
2076-3921
e-ISSN
2076-3921
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Volume: 9,
Issue: 10,
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Article Number: 908
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MDPI
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St Alban-anlage 66, Ch-4052 Basel, Switzerland
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Peer reviewed
Institute(s)
Institute of Epidemiology (EPI)
POF-Topic(s)
30202 - Environmental Health
Research field(s)
Genetics and Epidemiology
PSP Element(s)
G-504091-004
G-504000-010
G-504090-001
Grants
State of Bavaria
Helmholtz Zentrum Munchen, German Research Center for Environmental Health - German Federal Ministry of Education and Research (BMBF)
European Commission, BBMRI-LPC (FP7)
Austrian Science Fund (FWF)
French National Cancer Institute (INCa)
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Erfassungsdatum
2020-11-02