胺醇头发测试,以突出补充剂中的八丁污染,负责兴奋剂不良分析发现
Jean-Claude Alvarez1, Isabelle Etting2
1Department of Pharmacology and Toxicology, Raymond Poincaré Hospital, GHU AP-HP.Paris-Saclay, 92380 Garches, France; Paris-Saclay University, UVSQ, Inserm U-1018, CESP, Team MOODS, Plateform MasSpecLab, 78180 Montigny-le-Bretonneux, France.
Clinica chimica acta; international journal of clinical chemistry
|October 14, 2024
概括
甲基胺 (DMHA) 和其代谢物肝胺醇是被禁止的兴奋剂. 这项研究开发了一种检测它们在头发中的方法,将兴奋剂与污染区分开来. 头发分析证实了一名运动员受到污染,导致了WADA的裁决.
科学领域:
- 药理学 药理学是指药理学的学科.
- 分析化学 分析化学
- 运动科学 运动科学 运动科学
背景情况:
- 奥克托德林 (二甲基胺,DMHA) 和其代谢物胺醇是中枢神经系统的兴奋剂.
- 这些物质被世界反兴奋剂机构 (WADA) 根据第S6b节禁止在竞争中使用.
- 由于污染,可能会出现不良分析结果 (AAF),需要方法来区分兴奋剂和意外摄入.
研究的目的:
- 开发和验证一种液体染色学-并联质谱法 (LC-MS/MS) 方法,用于量化人类头发中的八丁和胺醇.
- 应用这种方法来分析来自AAF的运动员的头发和脚样本.
- 调查受污染的补充剂作为AAF的来源,并进行受控研究以确认污染与故意兴奋剂的对比.
主要方法:
- 开发一种敏感的LC-MS/MS测定方法,用于检测头发和脚指甲中的奥克托德林和赫普塔米诺.
- 分析运动员的阴毛和脚指甲剪切,在AAF后两个月收集.
- 对运动员补充剂的分析和对志愿者摄入受污染补充剂的受控研究.
主要成果:
- 污染的补充剂含有奥克托德林被确定为来源.
- 这位运动员的阴毛和脚指甲剪片只含有肝胺醇,这与污染相一致.
- 一项受控研究证实,头发样本显示出肝氨醇,而脚指甲则呈阴性,支持了污染假说.
结论:
- 开发的LC-MS/MS方法可以使用头发分析来区分兴奋剂和奥克托德林/肝胺醇的污染.
- 头发分析在证明运动员的AAF是由于补充污染而不是故意的兴奋剂而变得至关重要.
- 虽然污染被接受,但这名运动员因在线购买的未经验证的补充剂而被禁赛9个月.
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