Abstract
A great deal of effort has been made on the effect of oxidative stress for smokers. What seems to be lacking, however, is its evidence. Analyzing 1076 participants (age 35.9 +/- 12.9, urinary8-OHdG Mean +/- S.D., 11.4 +/- 6.7, n = 1076), our study found the significant increase in a biomarker of DNA damage urinary 8-OHdG/creatinine among smokers (7.75 +/- 2.8 ng/ml x CRE (n = 154) and 7.36 +/- 2.5 ng/ml x CRE (n = 627) (p < 0.05), Relative Risk = 2.9 (1.4-6.2) sex and age +/- 2 matching 105 male smokers and non-smokers. There was no significance on the comparison between female smokers and non-smokers. Smokers have significantly decreased serum alpha-tocopherol (1012 +/- 455, 1152 +/- 857, p < 0.03). The amount of serum ascorbate did not change. Smokers lowered serum HDL-cholesterol compared to non-smokers (59.3 +/- 11.8, 63.9 +/- 13.3, p < 0.05). The result of oxidative stress profile (OSP) also indicated that the increase of oxidative stress to smokers (p < 0.05). The calculated value of oxygen radical absorbance capacity (ORAC) of the meal for subjects was 1600 ORAC units.
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