New evidence on the effects of tea on mercury metabolism in humans
New evidence on the effects of tea on mercury metabolism in humans
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DOI：
10.3200/aeoh.61.5.232-238
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发表时间：
2006-09-01
影响因子：
1.8
通讯作者：
Rheault, Isabelle
中科院分区：
文献类型：
--
作者：
Canuel, Rene;de Grosbois, Sylvie Boucher;Rheault, Isabelle
作者介绍了一项实验的结果，在该实验中，他们探索了茶在人类对鱼类消费中的甲基汞(MeHg)的代谢过程中的作用。来自合作水星研究网络(COMERN)的50名科学家参与了这项实验，他们同意连续3天每天吃两顿鱼。一半的参与者也每天喝6杯茶，从一周前开始，一直持续到实验结束。作者根据(1)测量的鱼中汞(Hg)水平和(2)吃鱼的数量计算了每个参与者摄入的甲基汞总量，并将其与参与者血液中汞和甲基汞水平的总升幅进行了比较。结果表明，对照组代谢了大约100%的有效鱼类甲基汞，而茶暴露组的血液中甲基汞水平比提供的鱼中的水平高出40%以上，这表明外部甲基汞池提供了测量到的血液甲基汞增加的一部分。作者得出结论，TEA可能会加速肝-肠甲基汞循环，并有助于血液中甲基汞的暂时生物放大。
The authors present the results of an experiment in which they explored the role of tea in human metabolic processing of methylmercury (MeHg) from fish consumption. The experiment involved 50 scientists from the Collaborative Mercury Research Network (COMERN) who agreed to eat fish for 2 daily meals for 3 consecutive days. Half of the participants also drank 6 cups of tea daily, starting a week before and continuing through the experiment. The authors calculated the total amount of MeHg that each participant ingested from (1) the measured mercury (Hg) level in fish and (2) the quantity of fish eaten, and compared it with the total increases of Hg and MeHg levels in participants' blood. Results indicated that the control group metabolized roughly 100% of the available fish MeHg, whereas the tea-exposed group showed blood levels of MeHg at more than 40% than that available in the fish provided, suggesting that an external MeHg pool supplied part of the measured blood MeHg increase. The authors conclude that tea may accelerate the enterohepatic MeHg cycle and contribute to a temporary bioamplification of MeHg in the bloodstream.