Re: [新聞] 林子琦禁賽風波 蔡溫義:對不起國家
看板Olympics_ISG作者WillWaiting (Creep)時間7年前 (2016/08/10 09:41)推噓65(72推 7噓 91→)留言170則, 77人參與討論串2/3 (看更多)
※ 引述《poltroon (20公分的距離)》之銘言:
: http://www.appledaily.com.tw/realtimenews/article/new/20160810/925720/
: 手機無法複製內文
: 1.林子琦之前有用藥,前面的三次藥檢有過。教練有提醒林子琦不要用。(但教練不知情
: )
: 2.蔡教練的手機真的被偷
: http://i.imgur.com/rooyioJ.jpg
林這次被抓到的禁藥是表睪酮(epitestosterone),一種在體內沒有活性的分子
跟睪固酮(testosterone)為立體異構物
睪固酮是有活性的激素 可以增強運動表現
是一種本來體內就會製造的禁藥
但是每個人體內的睪固酮含量不一定相同
要如何判斷這個人是因為本來就睪固酮過高還是服用禁藥
就要靠表睪酮的含量了
一般來說每個人睪固酮跟表睪酮的比例約為定值
當睪固酮跟表睪酮的比例>4時 大概就可以判斷說這個人服了禁藥刺激睪固酮生成
所以新一代的禁藥會服用表睪酮來控制睪固酮跟表睪酮的比例
只是睪固酮跟表睪酮都是體內會製造的分子
要如何判斷說睪固酮跟表睪酮是從體外食用或注射來的
就要靠最新的方法了
各種生物之間的同位素比例不一樣
下圖是H-2在各物種跟自然界中來源的比例差異
https://upload.wikimedia.org/wikipedia/commons/5/52/DD_Various_Sources.jpg
不過差異非常的小 要靠高解析度質譜來判斷
所以這次林被抓到吃了表睪酮是因為他的C-13或H-2比例跟人體該有的不同
Ref:
Clin Chem. 2002;48(4):629-36.
Detection of epitestosterone doping by isotope ratio mass spectrometry.
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你要不要看懂內文再回應?
每個人體內睪固酮含量不一定相同
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沒可能,除非你更改整個代謝途徑
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※ 編輯: WillWaiting (96.93.71.126), 08/10/2016 09:46:44
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