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Low serum bilirubin level as an independent predictor of stroke incidence: a prospective study in Korean men and women.

Authors
 Heejin Kimm  ;  Ji Eun Yun  ;  Jaeseong Jo  ;  Sun Ha Jee 
Citation
 STROKE, Vol.40(11) : 3422-3427, 2009 
Journal Title
 STROKE 
ISSN
 0039-2499 
Issue Date
2009
MeSH
Adult ; Aged ; Aged, 80 and over ; Asian Continental Ancestry Group* ; Bilirubin/blood* ; Biomarkers/blood ; Cohort Studies ; Female ; Humans ; Incidence ; Korea/epidemiology ; Male ; Middle Aged ; Predictive Value of Tests ; Prospective Studies ; Risk Factors ; Sex Characteristics* ; Stroke/blood* ; Stroke/diagnosis ; Stroke/epidemiology*
Keywords
bilirubin ; hemorrhagic stroke ; ischemic stroke ; stroke incidence
Abstract
BACKGROUND AND PURPOSE: Bilirubin is not only a waste end-product but also an antioxidant. Bilirubin is known to be associated with decrease in cardiovascular risk in men, but its relationship to stroke was not clearly understood. METHODS: Serum bilirubin concentrations were measured in 78 724 health examinees (41 054 men, aged 30-89 years) from 1994 to 2001. The subjects with potential hepatobiliary diseases or Gilbert syndrome were excluded from analysis. Stroke incidence outcome was collected from hospital records of admission attributable to stroke from 1994 to 2007. RESULTS: Serum bilirubin measurements were divided into 4 levels: 0 to 10.2, 10.3 to 15.3, 15.4 to 22.1, and 22.2 to 34.2 micromol/L. The number of stroke cases was 1137 in men and 827 in women. In Cox proportional hazard models, participants with a higher level of bilirubin showed lower hazard ratios in men with ischemic stroke after adjustment for multiple confounding factors compared to the lowest level of bilirubin (hazard ratio [HR], 0.72; 95% CI, 0.58-0.90 in level 3; HR, 0.66; 95% CI, 0.49-0.89 in level 4; P for trend=0.016). The risk of all stroke types also decreased as bilirubin levels increased (HR, 0.81; 95% CI, 0.68-0.97 in level 3; HR, 0.74; 95% CI, 0.58-0.94 in level 4; P for trend=0.0071). However, these associations were not seen in hemorrhagic stroke or in women. CONCLUSIONS: These findings suggest that serum bilirubin might have some protective function against stroke risk in men.
Files in This Item:
T200903645.pdf Download
DOI
10.1161/STROKEAHA.109.560649
Appears in Collections:
4. Graduate School of Public Health (보건대학원) > Graduate School of Public Health (보건대학원) > 1. Journal Papers
Yonsei Authors
Kimm, Heejin(김희진) ORCID logo https://orcid.org/0000-0003-4526-0570
Yun, Ji Eun(윤지은)
Jo, Jae Seong(조재승)
Jee, Sun Ha(지선하) ORCID logo https://orcid.org/0000-0001-9519-3068
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/105251
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