PUFAs in serum cholesterol ester and oxidative DNA damage in Japanese men and women

Yasumi Kimura, Masao Sato, Kayo Kurotani, Akiko Nanri, Kazuaki Kawai, Hiroshi Kasai, Katsumi Imaizumi, Tetsuya Mizoue

研究成果: ジャーナルへの寄稿記事

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Background: PUFAs are susceptible to lipid peroxidation and play a role in inflammation, both of which can induce oxidative stress. However, the relation of PUFA to oxidative DNA damage in humans is elusive. Objective: We examined the association between concentrations of circulatory PUFAs and urinary 8-oxo-7,8-dihydroguanine (8-oxoGua) in Japanese men and women. Design: The subjects were 495 participants (290 men and 205 women) in a cross-sectional study in 2 municipal offices in Japan. Serum cholesterol ester (CE) and phospholipid fatty acid composition were measured by gas-liquid chromatography. Urinary 8-oxoGua concentrations were measured by HPLC, and 8-oxoGua values for each tertile of PUFA after adjustment for covariates were calculated by multiple regression. Results: Urinary 8-oxoGua concentrations increased with increasing concentrations of n-3 (omega-3) PUFAs, EPA, and DHA in serum CE (P-trend = 0.001, 0.01, and 0.009, respectively), whereas they decreased with increasing concentrations of n-6 PUFAs and linoleic acid (P-trend = 0.02 and 0.051, respectively). Conclusion: Oxidative DNA damage may be greater with higher concentrations of long-chain n-3 PUFAs but lower with higher concentrations of n-6 (omega-6) PUFAs.

元の言語英語
ページ(範囲)1209-1214
ページ数6
ジャーナルAmerican Journal of Clinical Nutrition
95
発行部数5
DOI
出版物ステータス出版済み - 5 1 2012

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All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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