纳米材料的危险评估:如何满足 (下一代) 风险评估的要求?
Eleonora Marta Longhin1, Ivan Rios-Mondragon2, Espen Mariussen3,4
1Health Effects Laboratory, Department of Environmental Chemistry and Health Effects, NILU, 2007, Kjeller, Norway. eml@nilu.no.
Particle and fibre toxicology
|December 26, 2024
概括
新方法方法 (NAMs) 整合了纳米材料风险评估的in silico和in vitro方法. 这项研究证明了它们在预测生物反应和支持下一代风险评估 (NGRA) 中的有效性.
科学领域:
- 纳米材料安全性评估
- 毒理学和危险识别方法
- 新方法方法论 (NAMs)
背景情况:
- 目前的纳米材料 (NM) 风险评估面临着许多纳米形式,数据不一致性和横读限制的挑战.
- 新方法方法 (NAMs) 极其需要,以推进NAMs的下一代风险评估 (NGRA).
- 这项研究通过整合物理化学表征,体外试验和分析来解决这些挑战.
研究的目的:
- 评估整合物理化学性质,体外测试和模型的有效性,以评估NM危害.
- 在NGRA中进行三种细胞毒性方法的交叉验证,以便在NGRA中实施稳健的NAM.
- 确定影响NM生物活性的关键物理化学性质.
主要方法:
- 九种不同的纳米形式的综合物理化学表征.
- 在体外细胞毒性评估使用阿拉玛蓝色,殖民地形成效率和电细胞基板阻抗传感 (ECIS).
- 通过彗星测定进行in silico相似性分析和基因毒性评估.
主要成果:
- 物理化学性质与观察到的生物反应和细胞吸收有显著的相关性.
- 在三个经过验证的体外方法中,细胞毒性结果一致,在NMS中显示出不同的反应.
- 在彗星测定中,只有一个纳米形式表现出基因毒性,这凸显了NM特异性的影响.
结论:
- 在模型有效地预测生物活性纳米形式基于物理化学性质,特别是面积比.
- 经过交叉验证的 in vitro 细胞毒性方法证明了在 NGRA 内的 NM 测试的敏感性和适用性.
- 使用NAM的综合方法支持更有效和可靠的纳米材料风险评估框架.
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