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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2006.6
- 수록면
- 127 - 138 (12page)
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초록· 키워드
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In urban areas, diesel exhaust particles (DEP) are probably a major component of particulate matters, especially in Korea where drive many diesel vehicles. The aim of this study was to investigate genotoxic effects of DEP using single cell gel electrophoresis. In order to evaluate the mechanisms of DEP genotoxicity, the rat microsome mediated and DNA repair enzyme treated comet assays together with conventional comet assay were performed. Total diesel particles (DEP<SUB>T</SUB>) was collected without size fractionation from diesel engine bus and dichloromethane extract was obtained. The organic extract of DEP<SUB>T</SUB> revealed DNA damage itself in NIH/3T3 cells. The level of DNA breaks plus oxidative DNA lesions and microsome mediated DNA damage was assessed by modified single cell gel eletrophoresis. DEP<SUB>T</SUB> was able to induce oxidative DNA damage as well as microsome mediated DNA damage. Vitamin C as an model antioxidant reduced DNA damage in endonuclase III treated comet assay. One of flavonoid, galangin as a CYP1A1 inhibitor, reduced DNA damage in the presence of S-9 mixture. DEP<SUB>T</SUB> is the sources of oxidative stress, but antioxidants can significantly reduce oxidative DNA dmage. And DEP<SUB>T</SUB> may contain indirect mutagens which can be inhibited by CYP1A1 inhibitors. The ethanol extracts of the mixed vegetables (BV) or the mixed fruits (BF) were evaluated for their in vitro antigenotoxic effects. BV and BF showed potent inhibitory effects against DEP<SUB>T</SUB> induced DNA damage with oxidative DNA lesions and in the prescence of S-9 mixture. These results indicate that BV and BF could prevent cellular DNA damage by inhibiting oxidative stress and suppressing cytochrome P4501A1 in cell culture.
목차
ABSTRACT
서론
재료 및 방법
결과
고찰
결론
감사의 글
참고문헌
참고문헌 (56)
참고문헌 신청
[학술지(정기간행물)] - / 2004 / 야채 및 과일추출물의 항산화작용과 산화적 염색체손상에 대한 억제효과 48 (2) : 111 ~ 116
[학술지(정기간행물)] - / 2005 / 야채 및 과일추출물의 항산화작용 49 (3) : 335 ~ 344
[학술지(정기간행물)] - / 2000 / Evaluation of benzo (a)pyrene-induced DNA damage in human endothelial cells using alkaline single cell gel electrophoresis 471 (2) : 145 ~ 155
[학술지(정기간행물)] - / 2003 / Involvement of reac-tive oxygen species in the metabolic pathways triggered by diesel exhaust particles in human airway epithelial cells 285 (3) : 671 ~ 679
[학술지(정기간행물)] - / 2003 / Biological effects of atmospheric particles on human bronchial epithelial cells. Comparison with diesel exhaust particles 17 (6) : 567 ~ 73
[학술지(정기간행물)] - / 2005 / 야채 및 과일추출물의 항산화작용 49 (3) : 335 ~ 344
[학술지(정기간행물)] - / 2000 / Evaluation of benzo (a)pyrene-induced DNA damage in human endothelial cells using alkaline single cell gel electrophoresis 471 (2) : 145 ~ 155
[학술지(정기간행물)] - / 2003 / Involvement of reac-tive oxygen species in the metabolic pathways triggered by diesel exhaust particles in human airway epithelial cells 285 (3) : 671 ~ 679
[학술지(정기간행물)] - / 2003 / Biological effects of atmospheric particles on human bronchial epithelial cells. Comparison with diesel exhaust particles 17 (6) : 567 ~ 73
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