使用与兴奋剂测试相关的样本进行个人识别方法:线粒体和核遗传数据的比较
Kentaro Akiyama1, Atsushi Momobayashi1, Masato Okano1
1Anti-Doping Laboratory, LSI Medience Corporation, Tokyo, Japan.
Drug testing and analysis
|May 10, 2024
概括
线粒体DNA (mtDNA) 测试比短串重复 (STR) 分析对兴奋剂控制具有更高的灵敏度,特别是在像尿液这样的退化样本中. mtDNA分析对于从具有挑战性的样本中识别运动员是有价值的.
科学领域:
- 法医科学 法医科学 法医科学
- 生物化学 生化学
- 遗传学 是一个遗传学.
背景情况:
- 兴奋剂控制包括检测禁止物质或样本操纵.
- 短串重复 (STR) 分析是运动员识别的标准,但与有限的DNA作斗争.
- 线粒体DNA (mtDNA) 提供稳定性和高拷贝数量,使其适合降解样本.
研究的目的:
- 为了比较线粒体DNA (mtDNA) 测试与短串重复 (STR) 分析在兴奋剂控制中的有效性.
- 为了评估灵敏度,不同样品类型 (血液,干血斑点,尿液) 的一致性,以及病例类型样品的性能.
主要方法:
- 敏感性研究比较mtDNA和STR分析.
- 使用全血,干血斑点和尿液样本进行一致性研究.
- 案例类型研究涉及各种生物样本,包括尿液,血液残留物和污点.
主要成果:
- 与STR分析相比,mtDNA测试显示出更高的灵敏度.
- 在所有样本类型中,mtDNA序列和STR配置文件之间观察到高一致性.
- 在一些尿样中,STR分析显示了等位体的脱落,而mtDNA测试成功生成了所有测试样本的DNA配置文件,包括退化样本.
结论:
- mtDNA测试是分析高度降解的DNA样本,特别是尿液的宝贵工具,用于兴奋剂控制.
- 建议使用mtDNA进行初始尿液测试,因为它对具有挑战性的样品有效.
- 在DNA匹配对运动员有重大影响的情况下,可能需要从血液中进行确认性STR分析.
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