Abstract:
BACKGROUND AND PURPOSE:A J-shaped relationship has been demonstrated between alcohol and both clinical cardiovascular events and carotid atherosclerosis. A similar J-shaped relationship has been found between alcohol intake and inflammatory markers. If inflammation were on the intermediate causal pathway between alcohol intake and atherosclerosis, then genetic determinants of enhanced inflammation would be expected to modify this relationship. METHODS:In a large community population (n=1000; age, 50 to 65 years), we studied the effects of the interleukin-6 (IL-6)-174 polymorphism and gene-alcohol interactions on common carotid artery intima-media thickness (CCA-IMT) and carotid plaque. RESULTS:The CC genotype was associated with significantly higher IL-6 levels; the odds ratio (OR) for IL-6 in the top quartile was 2.07 (95% CI, 1.16 to 3.72; P=0.014). Interactions were seen between genotype and alcohol consumption for both IL-6 levels and CCA-IMT. In individuals who drank >30 g/d of alcohol, the CC genotype was associated with higher IL-6 levels, elevated CCA-IMT (P=0.001), and increased risk of carotid plaque (OR, 3.64; 95% CI, 1.15 to 11.54; P=0.028). The J-shaped relationship between alcohol intake and IMT was seen only for the CC genotype. CONCLUSIONS:These data suggest that the IL-6-174 promotor polymorphism may modulate the effects of alcohol on carotid atherosclerosis. These data support the hypothesis that inflammation forms part of the intermediate causal pathway between alcohol intake and atherosclerosis.
journal_name
Strokejournal_title
Strokeauthors
Jerrard-Dunne P,Sitzer M,Risley P,Steckel DA,Buehler A,von Kegler S,Markus HS,Carotid Atherosclerosis Progression Study.doi
10.1161/01.str.0000053849.09308.b2subject
Has Abstractpub_date
2003-02-01 00:00:00pages
402-7issue
2eissn
0039-2499issn
1524-4628journal_volume
34pub_type
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