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Influence of the IL-6 −572C > G polymorphism on inflammatory markers according to cigarette smoking in Korean healthy men

 Donghoon Choi  ;  Dong-Jik Shin  ;  Oh Yoen Kim  ;  Jey Sook Chae  ;  Soo Jeong Koh  ;  Yangsoo Jang  ;  Kyung-Kyun Shin  ;  Sungha Park  ;  Hyae Jin Kim  ;  Jong Ho Lee 
 CYTOKINE, Vol.39(2) : 116-122, 2007 
Journal Title
Issue Date
Biomarkers/blood ; Creatinine/urine ; Humans ; Inflammation Mediators/blood* ; Interleukin-6/blood ; Interleukin-6/genetics* ; Korea ; Male ; Men ; Middle Aged ; Polymorphism, Genetic* ; Reference Values ; Smoking*
IL-6 −572C > G polymorphism ; Smoking ; Inflammation ; Oxidative stress
We investigated whether smoking would interact with the interleukin-6 (IL-6) polymorphisms (−174G > C and −572C > G, −597G > A and −1363G > T) in determining circulating levels of inflammatory markers and its consequence to oxidative stress. The G/G genotype (n = 26) of the −572C > G in nonsmokers (n = 376) was associated with higher IL-6 (P = 0.028), fibrinogen (P = 0.007) and ox-LDL (P = 0.006) than those with C/C (n = 209) or C/G (n = 141). Results were similar for nonsmokers and smokers (n = 268), but in smokers, the −572G/G genotype was associated with a greater difference in levels of IL-6 (P = 0.031), fibrinogen (P = 0.001), ox-LDL (P = 0.037) and PGF2α (P = 0.050). IL-6 had positive relations with CRP, fibrinogen, ox-LDL and PGF2α. There was no evidence of an effect of −572C > G genotype on CRP levels in nonsmokers, however, this polymorphism was associated with a highly significant effect on CRP in smokers (P < 0.001) (genotype-smoking interaction P = 0.04, adjusted for age, BMI and IL-6). The C allele frequency at the −174 promoter region of IL-6 was very rare (<0.01) and −597G > A and −1363G > T were monomorphic in this study. Our results suggest that IL-6 −572C > G has a greater response over time to the inflammatory effects of smoking and this may result in smokers having higher oxidative stress in subjects with G/G compared to C/C or C/G.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Park, Sung Ha(박성하) ORCID logo https://orcid.org/0000-0001-5362-478X
Jang, Yang Soo(장양수) ORCID logo https://orcid.org/0000-0002-2169-3112
Choi, Dong Hoon(최동훈) ORCID logo https://orcid.org/0000-0002-2009-9760
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