癌变·畸变·突变 ›› 1998, Vol. 10 ›› Issue (6): 331-335.doi: 10.3969/j.issn.1004-616x.1998.06.001

• 论著 •    下一篇

不同抗氧化剂在紫外线所致人体皮肤环丁烷嘧啶二聚体形成中的作用

鄂晓飞1 朱旭东2  李 晶1  刘 扬1  孙新艳3  王秉贤1   

  1. 1中国医科大学环境卫生教研组 2 第一临床学院中心实验室 3 第一临床学院麻醉科研究室 沈阳 110001
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-11-30 发布日期:1998-11-30

EFFECTS OF VARIOUS ANTIOXIDANTS ON UV2INDUCED THE FORMATION OF HUMAN SKIN'S CYCLOBUTYL PRIMIDINE DIMERS

E Xiaofei1 , Zhu Xudong2 , Li J ing1 , Liu Yang1 , Sun Xinyan3 , Wang Bingxian1   

  1. 1Department of Envi ronmental Heal th , School of Public Heal th , China Medical University  2 Department of Center L aboratory , The f i rst Clinical College , 3Department of A naesthesia , S henyang  110001
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-11-30 Published:1998-11-30

摘要: 本实验应用碱性凝胶电泳技术探讨了活性氧自由基在紫外线照射人体皮肤形成环丁烷嘧啶二聚体中的作用。人皮肤DNA 加抗氧化剂后,经紫外线照射, T4N5 切割,电泳,最后进行凝胶成像系统分析。结果可见,抗氧化剂对环丁烷嘧啶二聚体的形成起到一定的抑制作用,尤其是β2胡萝卜素和超氧化物歧化酶(SOD)比谷胱甘胱( GSH) 和过氧化氢酶(CAT) 的作用明显,但均未能完全阻止CPD 的形成,这提示活性氧自由基在CPD 的形成中起部分的介导作用。

关键词: 活性氧自由基, 抗氧化剂, 环丁烷嘧啶二聚体, 紫外线

Abstract: To define further the role of reactive oxygen species ( ROS) in ult raviolet radiation (UV)2induced the formation of Human skin’s CPD , experiment s were performed using alkaline gelelect rophoresis technique. Purified DNA was incubated with antioxidant s. After DNA was exposed to UV , T4 Endonuclease V was added , elect rophoresis was taken , CPD was measured by Gel Imaging and Image Analysis. It was found that antioxidant s exhibited some inhibitory effects on the formation of CPD ,β2carotene and superoxide dismutase ( SOD) are more obvious than GSH and CAT , but none of which were able to block the formation completely. The result s suggest that the formation of CPD is only partly dependent on ROS.

Key words: ROS, Antioxidant, CPD, Ult raviolet radiation