國家衛生研究院 NHRI:Item 3990099045/4101
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    题名: DNA damages induced by trans, trans-2,4-decadienal (tt-DDE), a component of cooking oil fume, in human bronchial epithelial cells
    作者: Young, SC;Chang, LW;Lee, HL;Tsai, LH;Liu, YC;Lin, P
    贡献者: Division of Environmental Health and Occupational Medicine
    摘要: Epidemiological studies have demonstrated that cooking oil fumes (COF) are an environmental risk factor for the development of lung adenocarcinoma among nonsmoking females in Taiwan. Aside from polycyclic aromatic hydrocarbons, aldehydes, especially trans, trans-2,4-decadienal (tt-DDE) are found to be abundant in COF. Although there is indication that tt-DDE induces DNA damage, the precise role of tt-DDE in the induction of DNA damage in lung cells is still not clear. When we assessed DNA breaks with the Comet assay, we found that the DNA breaks induced by 1 muM tt-DDE in human bronchial epithelial cells (BEAS-2B) could be significantly reduced by antioxidants, suggesting that oxidative stress was involved. Indeed, when tt-DDE-treated cells were coincubated with endonuclease III/formamidopyrimidine-DNA glycosylase or with nuclear extract (NE), an enhancement of DNA breaks was observed at 1 hr after tt-DDE exposure. Furthermore, when NE was incubated with an antibody against 8-oxoguanine DNA glycosylase (anti-OGG1), a reduction in tt-DDE/NE-induced DNA breaks could be demonstrated. Since OGG1 is a specific repair enzyme for 8-oxo-deoxyguanosine (8-oxo-dG), these findings indicated that 8-oxo-dG was involved. On the other hand, when NE was incubated with antibodies against nucleotide excision repair enzymes, there was a significant reduction in tt-DDE/NE-induced DNA breaks at 4 hr after tt-DDE treatment. These observations indicate that, in addition to early oxidative DNA damage, nonoxidative DNA damage such as bulky adduct formation, was also induced by tt-DDE. Our study further affirms that tt-DDE is genotoxic to human lung cells and can increase carcinogenic risk.
    日期: 2010-05
    關聯: Environmental and Molecular Mutagenesis. 2010 May;51(4):315-321.
    Link to: http://dx.doi.org/10.1002/em.20550
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0893-6692&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000276967700006
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77951643210
    显示于类别:[林嬪嬪] 期刊論文
    [張惠華(1999-2009)] 期刊論文

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