当前位置: X-MOL 学术Drug Test. Anal. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Detection of testosterone doping in female athletes.
Drug Testing and Analysis ( IF 2.6 ) Pub Date : 2019-09-03 , DOI: 10.1002/dta.2689
David J Handelsman 1 , Stéphane Bermon 2
Affiliation  

Testosterone doping remains a prevalent and potent form of drug cheating among elite athletes. In men, the urine testosterone (T) to epitestosterone (E) ratio (T/E ratio) can identify administration of exogenous T by its suppression of endogenous T production through strong negative feedback on endogenous T and E production as well as spill over into urine of extra testosterone. However, this mechanism may be partially inoperative in females whose much lower circulating T derives from three sources, none subject to powerful negative T feedback. Hence, additional methods to detect T doping in females are required. In this study we report two cases of elite female athletes who were sanctioned for T doping proven by measurement of serum T using liquid chromatography−mass spectrometry (LC–MS), when serial urine T and T/E ratio in one were not indicative of T doping, and in the other were nullified by incidental genetic inactivation of T glucuronidation through the uridine diphosphoglucuronosyl transferase 2B17 (UGT2B17) deletion genotype–phenotype. These findings indicate the potential for serum T measurement by LC–MS to detect T doping in female athletes, especially if implemented in the Bayesian format of an athlete biological passport.

中文翻译:

女运动员睾丸激素掺杂的检测。

在精英运动员中,睾丸激素掺杂仍然是药物作弊的一种普遍而有效的形式。在男性中,尿中睾丸激素(T)与表睾酮(E)的比率(T / E比率)可以通过抑制内源性T产生来识别外源性T的施用,该抑制作用是通过对内源性T和E产生强烈的负反馈以及对溢出产生的尿中多余的睾丸激素。但是,这种机制在女性中,其循环T值要低得多的原因可能是部分无效的,而T值来自三个来源,没有一个受到强烈的负T反馈。因此,需要其他方法来检测雌性中的T掺杂。在本研究中,我们报告了两例因使用T掺杂而受到制裁的精英女性运动员,这些情况通过使用液相色谱-质谱法(LC-MS)测定血清T来证明,当连续尿液中的T和T / E比值不能指示T掺杂,而另一种则通过尿苷二磷酸葡糖醛酸糖基转移酶2B17(UGT2B17)缺失基因型-表型对T葡萄糖醛酸化进行偶然的基因失活来消除。这些发现表明,通过LC-MS进行血清T检测的潜力可检测女运动员的T掺杂,尤其是如果以运动员生物护照的贝叶斯格式实施的话。
更新日期:2019-09-03
down
wechat
bug