癌变·畸变·突变 ›› 2003, Vol. 15 ›› Issue (3): 168-170.doi: 10.3969/j.issn.1004-616x.2003.03.012

• 检测研究 • 上一篇    下一篇

正常昆明种与NIH种小鼠自然发生微核率的比较

李 欣, 梁雪梅, 张 静, 杨 颖, 李 志, 黄俊明, 雄习昆   

  1. 广东省疾病预防控制中心毒理所, 广东 广州 510300
  • 收稿日期:2002-08-29 修回日期:2002-12-26 出版日期:2003-07-30 发布日期:2003-07-30
  • 通讯作者: 李 欣

A COMPARISON OF NATURAL MICRONUCLEUS FREQUENCIES IN POLYCHROMATIC ERYTHROCYTES BETWEEN KUNMING MICE AND NIH MICE

LI Xin, LIANG Xue-mei, ZHANG Jing, et al   

  1. Lab of Genetic Toxicology, Center of Disease Control and Prevention of Guangdong Province, Guangzhou 510300, China
  • Received:2002-08-29 Revised:2002-12-26 Online:2003-07-30 Published:2003-07-30
  • Contact: LI Xin

摘要: 目的: 比较正常昆明种与NIH种小鼠胸骨骨髓嗜多染红细胞微核的自然发生率。 方法: 按《食品安全性毒理学评价程序和方法》采用30 h法微核试验,计数微核数,计算微核率。 结果: 小鼠胸骨骨髓PCE自然发生率呈正偏态分布,中位数能较好的代表其平均水平,昆明种小鼠胸骨骨髓PCE微核自然发生率(‰),雌鼠为1.0(0, 4.0),雄鼠为2.0(0, 6.0),性别间差异有统计学意义(P<0.05);NIH种小鼠胸骨骨髓PCE微核数自然发生率(‰),雌鼠为2.0(0, 3.0),雄鼠为2.0(0, 6.0),性别间差异无统计学意义。昆明种和NIH种小鼠胸骨骨髓PCE自发微核率间差异无统计学意义。 结论: 昆明种与NIH种小鼠胸骨骨髓PCE微核的自然发生率与其他人的研究较接近,昆明种与NIH种小鼠品系间差异无统计学意义,而昆明种小鼠性别间差异有统计学意义。

关键词: 微核, 昆明种小鼠, NIH种小鼠

Abstract: Purpose: To compare natural micronucleus frequencies in polychromatic erythrocytes (fMPCE) from normal Kunming mouse chest bone marrow to that from normal NIH strain. Methods: According to Procedures and methods for toxicological assessment on food safety, 30 h micronucleus test was performed, the numbers of micronuclei were scored, and the fMPCE was calculated. Results: The natural fMPCE from the chest bone marrow showed skew distribution, and the media was a good indicator. The natural fMPCE of Kunming mice was 1.0 (0, 4.0) in female, and 2.0 (0, 6.0) in male, and there was a significant difference between different sex (P<0.05). The natural fMPCE of NIH mice was 2.0 (0, 4.0) in female, 2.0 (0, 6.0) in male, and there was no significant difference between different sex. There was no significant difference between Kunming and NIH mice in the natural fMPCE. Conclusion: The natural fMPCE from chest bone marrow of Kunming mice and NIH mice are similar. There is no significant difference between two strains; but a significant difference between different sex in Kunming mice does exist (P<0.05).

Key words: micronucleus, kunming mouse, NIH mouse