使用基于生理学的动力学建模预测急性帕拉克瓦特毒性,其中包括通过OCT2载体体在体外活性脏分泌
Annelies Noorlander1, Sebastiaan Wesseling1, Ivonne M C M Rietjens1
1Division of Toxicology, Wageningen University, Stippeneng 4, 6708 WE Wageningen, the Netherlands.
Toxicology letters
|October 8, 2023
概括
这项研究开发了一种使用生理学基础的动力学 (PBK) 模型来预测 (PQ) 毒性的新方法. 包括脏分泌改善了预测,在毒性评估中显示出新方法方法 (NAM) 的前景.
科学领域:
- 药理动力学和毒理学
- 在体外-在生物体内外推算 (QIVIVE)
- 新方法方法论 (NAMs)
背景情况:
- 基于生理学的动力学 (PBK) 模型对于定量体外-体内外推算 (QIVIVE) 是至关重要的.
- 结合活性排泄可以提高PBK模型的准确性来预测毒性.
- 有机阴离子转运器2 (OCT2) 基板,如帕拉克瓦特 (PQ),需要特殊的建模考虑.
研究的目的:
- 开发和验证一个结合活性排泄的PBK模型,用于预测PQ急性毒性.
- 使用QIVIVE作为毒性评估的新方法方法 (NAM).
- 为了确定PQ死亡率的基准剂量 (BMD) 值.
主要方法:
- 从文献中通过OCT2获得PQ传输的体外运动参数 (Vmax,Km).
- 使用适当的缩放因子将体外Vmax缩小到体内Vmax.
- 在大鼠 (RLE-6TN,L2) 和人类 (A549) 细胞系中定义的体外细胞毒性数据.
- 应用QIVIVE的反向剂量测量,以将体外细胞毒性转化为体内毒性.
- 通过使用骨质量分析,推导出下限和上限基准剂量 (BMDL50,BMDU50).
主要成果:
- 开发的PQ PBK模型成功地结合了活性脏分泌.
- QIVIVE将体外细胞毒性转化为预测的体内毒性剂量反应曲线.
- 预测的LD50值在老鼠中显示了保守的准确性,在人类中显示了可比的准确性.
- 该研究证明了包括脏分泌在PQ毒性预测中的原则.
结论:
- 开发的NAM,在PBK模型中纳入活性脏分泌,准确预测PQ急性毒性.
- 这种方法为QIVIVE和OCT2基质的毒性评估提供了可靠的方法.
- 这些发现支持使用NAM作为传统动物试验的替代品,用于毒性评估.
关键词:
主动脏分泌活动.有急性毒性的急性毒性.新方法方法论 (NAM)帕拉克瓦特 (Paraquat) 是一种类型.基于生理学的动力学 (PBK) 建模.量化体外-体外抽取 (QIVIVE) 的方法扩展因子的扩展因子更多相关视频
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