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Enhanced in vitro testing model for rapid risk assessment of ingested nanomaterials

机译:增强的体外测试模型可快速评估摄入的纳米材料的风险

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Increased nanomaterial use and production has raised concerns about health hazards which may result from their intentional or incidental ingestion. While various in vitro assays are employed to assess the behaviour of manufactured nanomaterials following ingestion, most lack consideration for key factors which are necessary to mimic realistic exposure conditions. By linking two validated processes - a simulated dynamic gastrointestinal digestion model and an intestinal barrier integrity assay, we are able to recreate a likely intake scenario of chronic nanoparticle exposure over a prolonged period. Results indicate that the test is robust, providing reproducible results for a range of nanomaterials. Further the process can be used to determined if a read across approach for risk assessment of manufactured nanomaterials can be logically applied. This study highlights the significance a complete lifecycle analysis for nanomaterials which includes assessing their stability and behaviour within different biological matrices.
机译:纳米材料的增加使用和生产引起人们对健康危害的关注,这种危害可能是由于有意或无意摄入而造成的。尽管采用了各种体外测定法来评估摄入后制成的纳米材料的行为,但大多数都没有考虑模仿实际暴露条件所必需的关键因素。通过链接两个经过验证的过程-模拟动态胃肠消化模型和肠屏障完整性测定,我们能够重现长期暴露于纳米颗粒的可能摄入情况。结果表明该测试是可靠的,可为一系列纳米材料提供可重复的结果。此外,该过程可以用于确定是否可以在逻辑上应用用于制造纳米材料的风险评估的贯穿方法。这项研究强调了对纳米材料进行完整生命周期分析的重要性,其中包括评估其在不同生物基质中的稳定性和行为。

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