SFC-MS/MS用于化17α-methyltestosterone异构体的直角分离
Felix Bredendiek1,2, Maria Kristina Parr1
1Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany.
Drug testing and analysis
|December 4, 2023
概括
类固醇类固醇 (AAS) 的滥用在体育运动中很普遍. 一种新的超临界流体染色法有效分离17α-甲基的代谢物,改善了兴奋剂控制分析.
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:
- 类固醇类固醇 (AAS) 在体育运动中经常被滥用,导致大量的兴奋剂管制违规行为.
- 代谢物分析对于检测类固醇滥用至关重要,但目前的方法在灵敏度和选择性方面存在局限性.
- 细胞染色体P450酶催化了关键的代谢转化,包括化,这些转化对于准确检测至关重要.
研究的目的:
- 开发和验证用于17α-甲基 (17α-MT) 化代谢物的敏感和选择性检测的正交分析方法.
- 用人类肝脏显微体研究17α-MT的体外代谢.
- 提高AAS反兴奋剂分析的效率和准确性.
主要方法:
- 开发一种超临界流体染色学双重质谱法 (SFC-MS/MS) 方法,用于分离17α-MT的四个关键氧化代谢物.
- 在体外化17α-MT与人类肝脏显微体以识别和量化代谢物.
- 用矩阵匹配校准验证SFC-MS/MS方法对量化和精度的极限进行验证.
主要成果:
- 开发的SFC-MS/MS方法实现了低量化极限 (0.66 ng/ml) 的高精度 (85115%).
- 在体外研究中确定了6β-基-17α-甲基 (15.9%) 和2β-基-17α-甲基 (0.5%) 作为主要代谢物.
- 该方法表现出灵敏和强大的性能,使得基化代谢产物能够在短时间的分析时间和没有衍生物化的情况下进行区分.
结论:
- 超临界流体染色学双重质谱学为分析具有挑战性的类固醇代谢物提供了强大的直角方法.
- 开发的方法提高了在反兴奋剂工作中检测和区分17α-MT代谢物的能力.
- 这一进步有助于通过解决现有分析技术的局限性来实现更有效和高效的体育兴奋剂控制.
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