在兴奋剂控制中对完整的四甲基酸硫酸代谢物的不同检测和识别方法的评估
Yiannis S Angelis1, Olga Goula1, Polyxeni Kiousi1
1Doping Control Laboratory of Athens, Institute of Biosciences and Applications, Athens, Greece.
Drug testing and analysis
|March 16, 2026
概括
甲基固醇的四硫酸盐代谢物是关键的长期生物标志物. 新的方法改善了它们的检测,扩大了识别甲基的滥用窗口,尽管识别时间与现有方法相似.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 法医科学 法医科学 法医科学
背景情况:
- 甲基固醇的四酸盐代谢产物是已确立的长期生物标志物.
- 通过LC-MS/MS在负离子模式中识别它们,在WADA法规下提出了分析挑战.
研究的目的:
- 为结构阐明合成潜在的四基甲基酸硫酸代谢物.
- 开发这些代谢物的直接识别方法.
- 评估它们在扩大甲基丸激素滥用检测窗口中的实用性.
主要方法:
- 六种潜在的四甲基固醇硫酸盐代谢物的微量合成.
- 在TMS衍生后的气色谱-质谱学 (GC-MS/MS).
- 液体染色学-高分辨率质谱学 (LC-HRMS/MS) 在用碳基二胺醇 (CDI) 衍生后.
- 来自甲基丸激素分泌研究的尿样分析.
主要成果:
- 合成的代谢物在衍生后使用GC-MS/MS和LC-HRMS/MS进行了表征.
- 衍生品可以在负离子和正离子模式中检测到,这有助于识别.
- 包括这些硫酸盐代谢物扩大了对甲基的滥用检测时间窗口.
- 然而,识别时间窗口与葡萄糖化物分数分析的时间窗口相似或比较短.
结论:
- 开发的方法可以识别四基甲基酸硫酸盐代谢产物.
- 这些代谢物显著延长了甲基固醇使用的检测期.
- 使用这些硫酸盐代谢物的识别时间窗口与现有的基于葡萄糖的方法相似.
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