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首页> 外文期刊>Applied Microbiology >Bioaccumulation Efficiency, Tissue Distribution, and Environmental Occurrence of Hepatitis E Virus in Bivalve Shellfish from France
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Bioaccumulation Efficiency, Tissue Distribution, and Environmental Occurrence of Hepatitis E Virus in Bivalve Shellfish from France

机译：法国双壳类贝类中戊型肝炎病毒的生物富集效率，组织分布和环境发生

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Hepatitis E virus (HEV), an enteric pathogen of both humans and animals, is excreted by infected individuals and is therefore present in wastewaters and coastal waters. As bivalve molluscan shellfish are known to concentrate viral particles during the process of filter feeding, they may accumulate this virus. The bioaccumulation efficiencies of oysters ( Crassostrea gigas ), flat oysters ( Ostrea edulis ), mussels ( Mytilus edulis ), and clams ( Ruditapes philippinarum ) were compared at different time points during the year. Tissue distribution analysis showed that most of the viruses were concentrated in the digestive tissues of the four species. Mussels and clams were found to be more sensitive to sporadic contamination events, as demonstrated by rapid bioaccumulation in less than 1 h compared to species of oysters. For oysters, concentrations increased during the 24-h bioaccumulation period. Additionally, to evaluate environmental occurrence of HEV in shellfish, an environmental investigation was undertaken at sites potentially impacted by pigs, wild boars, and human waste. Of the 286 samples collected, none were contaminated with hepatitis E virus, despite evidence that this virus is circulating in some French areas. It is possible that the number of hepatitis E viral particles discharged into the environment is too low to detect or that the virus may have a very short period of persistence in pig manure and human waste.
机译：戊型肝炎病毒（HEV）是人类和动物的肠道病原体，被感染的个体排出体外，因此存在于废水和沿海水域中。由于已知双壳贝类软体动物在过滤器进食过程中会浓缩病毒颗粒，因此它们可能会积聚这种病毒。在一年中的不同时间点比较了牡蛎（Crassostrea gigas），扁牡蛎（Ostrea edulis），贻贝（Mytilus edulis）和蛤（Ruditapes philippinarum）的生物富集效率。组织分布分析表明，大多数病毒集中在这四个物种的消化组织中。发现贻贝和蛤to对零星的污染事件更为敏感，与牡蛎种类相比，不到1小时的快速生物蓄积就证明了这一点。对于牡蛎，其浓度在24小时的生物累积时间内增加。另外，为了评估戊型肝炎病毒在环境中的发生情况，在可能受到猪，野猪和人类废物影响的地点进行了环境调查。尽管有证据表明该病毒在法国某些地区流行，但在收集的286个样本中，没有一个被戊型肝炎病毒污染。排放到环境中的戊型肝炎病毒颗粒数量太少而无法检测到，或者该病毒在猪粪和人类废物中的残留时间很短。

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