法医学杂志 ›› 2005, Vol. 0 ›› Issue (3): 188-191.

• 论文 • 上一篇    下一篇

西安汉族X染色体上6个STR位点的遗传多态性

余兵,秦群霞,闫金成,张洪波,李生斌   

  1. 西安交通大学医学院卫生部法医学重点实验室,环境与疾病相关基因教育部重点实验室 ,西安交通大学医学院第一附属医院中医科,西安交通大学医学院卫生部法医学重点实验室,环境与疾病相关基因教育部重点实验室 ,西安交通大学医学院卫生部法医学重点实验室,环境与疾病相关基因教育部重点实验室 ,西安交通大学医学院卫生部法医学重点实验室,环境与疾病相关基因教育部重点实验室 陕西西安,710061
  • 发布日期:2005-06-25 出版日期:2005-06-28

Genetic Polymorphism Analysis of 6 STR Loci on the X Chromosome in Xi′an Han Population

YU BING, QIN QUN- XIA, YAN JIN- CHENG,ET AL. (THE NATIONAL LABORATORY OF THE MINISTRY OF HEALTH FORFORENSIC SCIENCE, COLLEGE OF MEDICINE, XI′AN JIAOTONG UNIVERSITY, XI′AN 710061, CHINA)   

  • Online:2005-06-25 Published:2005-06-28

摘要: 目的调查西安汉族人群6个位于X染色体上的短串联重复序列:DXS8378、DXS7132、DXS6789、DXS101、HPRTB和DXS7423的基因及基因型频率分布。方法应用PCR和变性聚丙烯酰胺凝胶电泳及银染技术检测结果。结果在120例女性无关个体中,DXS8378、DXS7132、DXS6789、DXS101、HPRTB和DXS7423分别检出5、6、11、10、8和4个等位基因;分别检出10、17、29、32、22和7种基因型;此6个位点女性的基因型频率分布均符合Hardy-Weinberg平衡。结论此6个X染色体STR位点均有较高的个体识别率,在个体识别和女孩的亲权鉴定中有应用价值,对疾病相关研究有实际意义。

关键词: X染色体, 短串联重复序列, 遗传多态性

Abstract: Objective To investigate the alleles and genotypes frequency of 6 short tandem repeat (STR)loci (DXS8378、DXS7132、DXS6789、DXS101、HPRTB and DXS7423) on the X chromosome in Han popu-lation. Methods The six X- chromosome STR loci were analyzed by PCR following polyacylamide gel elec-trophoresis and silver stain. Results Among 120 females from Xi′an Han population, the number of allelesin the 6 loci (DXS8378、DXS7132、DXS6789、DXS101、HPRTB and DXS7423) were 5,6,11,10,8,and 4 re-spectively; the number of genotypes in the 6 loci were 10,17,29,32,22,and 7 respectively; Exact testsdemonstrated genotype frequencies in females had no departure from Hardy- Weinberg equilibrium. Con-clusion The six X- chromosome STR loci are appropriate for individual identification, paternity testing in-volving a female child and for study on related disease.

Key words: x-chromosome, STR, polymorphism