Evaluating microcystin exposure risk through fish consumption.
Evaluating microcystin exposure risk through fish consumption.
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DOI：
10.1021/es200285c
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发表时间：
2011-07-01
影响因子：
11.4
通讯作者：
Guildford, Stephanie J.
中科院分区：
文献类型：
--
作者：
Poste, Amanda E.;Hecky, Robert E.;Guildford, Stephanie J.
微囊藻毒素是一种世界范围内发现的蓝藻肝毒素，对其所在的生态群落以及依赖这些水饮用、卫生或作为食物来源的人构成严重威胁。众所周知，微囊藻毒素会在鱼类和其他水生生物群中积累，然而，关于鱼类组织中微囊藻毒素的普遍存在以及食用鱼类而接触微囊藻毒素所造成的人类健康风险，目前仍未得到充分解决。在这里，我们表明微囊藻毒素普遍存在于来自几个热带（乌干达）和温带（北美）湖泊的水和鱼类中，包括支持世界上一些最大淡水渔业的湖泊。我们确定鱼类消费可能是人类接触微囊藻毒素的重要途径，有时甚至是主要途径，并可能导致消费者超过微囊藻毒素的推荐每日总摄入量指南。这些结果强调了监测鱼类中微囊藻毒素浓度的重要性，以及考虑通过食用鱼类可能暴露于微囊藻毒素的必要性，以便充分评估人类暴露风险。
Microcystin is a cyanobacterial hepatotoxin that is found worldwide, and poses a serious threat to the ecological communities in which it is found as well as to those who rely on these waters for drinking, sanitation, or as a food source. Microcystin is known to accumulate in fish and other aquatic biota, however the prevalence of microcystin in fish tissue and the human health risks posed by microcystin exposure through fish consumption remain poorly resolved. Here we show that microcystin is pervasive in water and fish from several tropical (Ugandan) and temperate (North American) lakes, including lakes that support some of the largest freshwater fisheries in the world. We establish that fish consumption can be an important and sometimes dominant route of microcystin exposure for humans, and can cause consumers to exceed recommended total daily intake guidelines for microcystin. These results highlight the importance of monitoring microcystin concentrations in fish, and the need to consider potential exposure to microcystin through fish consumption in order to adequately assess human exposure risk.
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