癌变·畸变·突变 ›› 1999, Vol. 11 ›› Issue (3): 116-118.doi: 10.3969/j.issn.1004-616x.1999.03.004

• 论著 • 上一篇    下一篇

人精子诱变检测中新体外代谢活化系统的研究

方小武 黄天华 黄建民 刘鸿禧 陶学训 余云香 庄天罡   

  1. 汕头大学医学院生殖医学中心 汕头市 515063
  • 收稿日期:1998-07-15 修回日期:1999-01-15 出版日期:1999-05-30 发布日期:1999-05-30

THE STUDY ON NEW IN VITRO METABOLIC ACTIVATION SYSTEM IN GAMETE MUTATION TEST

Fang Xiaowu , Huang Tianhua , Huang J ianmin , Liu Hongxi , Tao Xuexun , Yu Xunxiang , Zhuang Tiangang   

  1. The Center f or Reproductive Medicine , S hantou University Medical College , S hantou  515031
  • Received:1998-07-15 Revised:1999-01-15 Online:1999-05-30 Published:1999-05-30

摘要: 人精子与去透明带金黄地鼠卵受精,在受精后异合卵培养阶段,用终浓度分别为20μg/ ml、40μg/ ml、60μg/ ml 的间接诱变剂环磷酰胺进行处理,继而制备精子染色体进行核型分析。得到环磷酰胺诱发的染色体畸变精子率在上述剂量组依次为33 %、50 %、33 %;断裂均数依次为0. 54 、1. 94 和0172 。与空白对照组比较,差异具有显著性( P < 0. 05 , P < 0101) 。本研究结果表明,用人精子/ 金黄地鼠异合卵为靶细胞,能够检出间接诱变剂的诱变性。异合卵内源性代谢活化体系的发现和应用在哺乳动物配子的毒理遗传研究中具有重要意义。

关键词: 去透明带地鼠卵, 人精子染色体, 内源性代谢活化体系, 环磷酰胺

Abstract: The zona2f ree golden hamster oocytes were genet rated in vit ro by human spermatozoa. The hybrid zygotes were exposed to promutagen cyclophosphamide (CPA) at the concent rations of 20μg/ ml , 40μg/ ml ,60μg/ ml respectively during the peroid of post2fertilization culture. Then human sperm chromosomes were prepared and analyzed. The f requencies of the spermatozoa with st ructural aberrations were 33 % ,50 % ,33 % and the means of chromosomal breakages were 0. 54 ,1. 94 ,0. 72 successively in the above dose2groups. The differences of two parameters between the test groups and the cont rols were significant ( P < 0. 05 , P < 0.1) . The results indicated that the mutagenicity of the romutagens could be evaluated in human/ golden hamster hybrid zygotes as the endogenous metabolic activation system. This finding would be very beneficial for toxi2genetic research in mammalian gamates.

Key words: Zona-free hamster oocyte, Human sperm chromosome, Endogenous metabolic activation system, Cyclophosphamide