一种多技术的分析方法,以支持对氧化纳米颗粒的 (生态) 毒理学研究
Ilaria Zanoni1, Valentina Marassi2, Andrea Zattoni2
1CNR-ISSMC- Institute of Science, Technology and Sustainability for Ceramics (ISSMC), Via Granarolo 64, I-48018, Faenza, RA, Italy.
Journal of chromatography. A
|September 6, 2024
概括
场流分化 (FFF) 精确评估了氧化纳米颗粒的溶解度,特别是在低度下. 老化纳米颗粒在体外皮肤模型中显示出降低的细胞毒性,突出显示了时间和老化对纳米颗粒毒性的影响.
科学领域:
- 纳米技术纳米技术
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
背景情况:
- 纳米粒子毒性机制和生物行为对于安全材料设计至关重要.
- 金属离子释放和生物可用性显著影响纳米粒子的行为,并可能导致不良影响.
- 了解氧化 (ZnO) 纳米粒子溶解度是评估它们对环境和健康影响的关键.
研究的目的:
- 为了比较在线场流分化 (FFF) 与离心超过,以评估ZnO纳米颗粒的可溶性.
- 为了研究ZnO纳米颗粒的合稳定性和表面修饰.
- 使用体外人体皮肤模型评估ZnO纳米颗粒的细胞毒性,考虑衰老和环境因素.
主要方法:
- 采用了两个在线场流分成 (FFF) 策略.
- 结果与离线离心超过的结果进行了比较.
- 使用Zeta Potential与pH测量来评估体稳定性.
- 在人体皮肤模型上使用新鲜和老化的ZnO纳米颗粒进行了体外细胞毒性测试.
主要成果:
- 与超过相比,FFF在较低度下为ZnO纳米颗粒提供了更具代表性的溶解模式.
- 体稳定性评估显示了显著的表面变化,可能是由于pH值依赖的溶解和重新沉.
- 细胞毒性测定揭示了时间依赖,剂量依赖和纳米粒子依赖的效应.
- 在体外皮肤模型中,老化的ZnO纳米粒子表现出比新鲜的更低的细胞毒性.
结论:
- 在线FFF是研究ZnO纳米粒子溶解度的合适方法,特别是在动态的,非平衡条件下.
- 纳米颗粒的衰老和暴露条件 (如淡水) 影响它们的体稳定性和毒性.
- 该研究为ZnO纳米颗粒的危险评估和 (生态) 毒理学分析提供了关键数据.
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