›› 2011, Vol. 23 ›› Issue (2): 134-136.doi: 10.3969/j.issn.1004-616x.2011.02.012

• 技术与方法 • 上一篇    下一篇

应用染色体G显带技术评估辐射剂量和染色体畸变的量效关系

施常备1,陈晓泉1,姚俊涛1,袁 勇1,赵 征1,袁 彬1,赵明刚2,陈 葳2,王 翔2,*   

  1. 1. 陕西省肿瘤医院,陕西 西安 710061; 2. 西安交通大学第一附属医院,陕西 西安 710061
  • 收稿日期:2010-12-12 修回日期:2011-01-12 出版日期:2011-03-30 发布日期:2011-03-30
  • 通讯作者: 王 翔

The value of G-banding chromosomal assay in ionizing-radiation-induced chromosomal aberration

SHI Chang-bei1,CHEN Xiao-quan1,YAO Jun-tao1,YUAN Yong1,ZHAO Zheng1,YUAN Bin1,ZHAO Minggang2,CHEN Wei,WANG Xiang2,*   

  1. 1. Shaanxi Tumor Hospital, Xi’an 710061,Shaanxi; 2. First Affiliated Hospital of Medical College of Xi’an Jiaotong University, Xi’an 710061, Shaanxi, China
  • Received:2010-12-12 Revised:2011-01-12 Online:2011-03-30 Published:2011-03-30
  • Contact: WANG Xiang

摘要: 应用染色体G显带技术观察4MV的X线辐射后的染色体畸变情况,分析不同类型的染色体畸变和辐射剂量的关系。 方法: 以4MV的X线 0.5、1、2、4 Gy对离体人外周血进行辐照,其淋巴细胞培养后,采用染色体G显带分析不同类型的染色体畸变率。 结果: 染色体双着丝粒、缺失、易位以及片段畸变和辐射剂量呈线性正相关,其线性趋势线和R 2值依次分别为: Y=24.1X-13.3 (R 2=0.975);Y=10.5X-2.7 (R2=0.887);Y=30.2X-17.8 (R2=0.913);Y=53.3X-38.7 (R 2=0.976)。 结论: 染色体G显带技术可以较非显带技术提供更多更准确的畸变信息,为进一步研究提供借鉴。

关键词: 辐射, 染色体畸变, G显带技术

Abstract: To validate the value of G-banding chromosomal assay in ionizing-radiation-induced chromosomal aberration. METHODS: Blood was irradiated with 0.5,1, 2 and 4 Gy,by 4 MV X-ray. The G-banding chromosomal aberration was assayed including dicentrics, deletions, translocations, rings, and fragments of chromosomes. RESULTS: Chromosomal aberration rates of dicentrics, deletions, translocations, and fragments all showed linear increase with radiation dose,with correlations of Y=24.1X-13.3(R2=0.975);Y=10.5X-2.7(R2=0.887); Y=30.2X-17.8(R2=0.913);Y=53.3X-38.7 (R2=0.976),respectively. CONCLUSION: G-banding chromosomal aberration assay deserve more attention in radiation biology.

Key words: radiation, chromosomal aberration assay, G-banding technique