Plasma F2-isoprostanes and coronary artery calcification: The CARDIA study

Myron D Gross, Michael W Steffes, David R Jacobs Jr, Xinhua Yu, Linda Lewis, Cora E. Lewis, Catherine M. Loria

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


Background: Oxidation of lipids in lipoproteins and cells may initiate and enhance the early development of cardiovascular disease. Method and Results: We assayed F2-isoprostanes, oxidation products of arachidonic acid, by gas chromatography-mass spectrometry in a biracial cohort of 2850 young healthy adult men and women. Coronary artery calcification (CAC), a component of coronary artery atherosclerosis, was detectable in 10% of the cohort and appeared to be in its initial stages (Agatston scores <20 in 47% and <100 in 83% of CAC-positive participants). After adjusting for sex, clinical site, age, and race, the presence of any CAC was 24% more likely among those with high vs low concentrations of F2-isoprostanes [odds ratio (OR) = 1.24 per 92.2 pmol/L (32.7 ng/L; 1 SD of F2-isoprostanes); 95% confidence interval (CI), 1.09-1.41]. The OR was only slightly attenuated [1.18 per 92.2 pmol/L (32.7 ng/L); CI, 1.02-1.38] after further adjustment for body mass index, smoking, serum lipids, C-reactive protein, antioxidant supplementation use, diabetes, and blood pressure. As a continuous variable, the Agatston score increased by 6.9% per 92.2 pmol/L (32.7 ng/L) of F2-isoprostane concentration (P <0.01). Whereas CAC prevalence was lower in women than men, mean (SD), F2-isoprostanes were higher in women {190 (108.9) pmol/L [67.4 (38.6) ng/L]} than in men {140.4 (55.6) pmol/L [49.8 (19.7) ng/L]}. Nevertheless, F2-isoprostanes were associated with an increased risk of CAC in both sexes. Conclusion: This association between increased concentrations of circulating F2-isoprostanes and CAC in young healthy adults supports the hypothesis that oxidative damage is involved in the early development of atherosclerosis.

Original languageEnglish (US)
Pages (from-to)125-131
Number of pages7
JournalClinical chemistry
Issue number1
StatePublished - Jan 2005


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