相关实验视频

Updated: Apr 28, 2026

In vitro Cell Culture Model for Toxic Inhaled Chemical Testing

In vitro Cell Culture Model for Toxic Inhaled Chemical Testing

Published on: May 8, 2014

开发一种新的体外毒性测定方法,用于预测大鼠吸入毒性

Arpamas Vachiraarunwong¹, Masaki Fujioka², David B Alexander³

¹Department of Environmental Risk Assessment, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan.

Toxicology letters

|December 12, 2025

概括

使用人类肺细胞的新体外测定预测了急性吸入毒性,减少了动物试验. 这种A549-NRU测定与动物研究结果有很强的相关性,为毒性测试提供了一个有希望的替代方案.

科学领域:

毒理学毒理学毒理学
在体外检测中进行检测.
细胞生物学细胞生物学

背景情况:

在毒性研究中减少动物试验至关重要,与3Rs原则保持一致.
开发可靠的体外替代品用于急性吸入毒性评估是必不可少的.

研究的目的:

开发和验证使用A549人类肺细胞 (A549-NRU) 作为急性吸入毒性的预测模型的中性红色吸收 (NRU) 试验.
评估A549-NRU测定与 in vivo大鼠吸入毒性数据的相关性.

主要方法:

使用A549细胞开发了一个15分钟的潜伏NRU试验,采用聚乙烯和玻璃板.
用A549-NRU测定方法确定49种化学物质的LC50值.
将A549-NRU衍生的LC50值与实体鼠标中报告的LC50值和常规小鼠3T3NRU测定结果进行了比较.

主要成果:

A549-NRU测定显示出与水溶性化合物 (r=0.4632) 和特定化学组 (化物/酸:r=0.9339;醇//环氧化物:r=0.7668) 的体内LC50值的显著正相关性.
与常规小鼠3T3NRU试验 (r=0.4524) 相比,A549-NRU试验与体内数据的相关性更强 (r=0.8879).
该试验的预测能力表明,在体内研究中估计起始剂量的潜力.

结论:

A549-NRU测定是一种可行的体外替代方法,用于预测急性吸入毒性.
与传统的NRU试验相比,这种试验可以更准确地预测体内毒性.
结果支持使用A549-NRU测定用于毒性测试和减少动物使用.

关键词:

A549-NRU测定方法吸入急性毒性吸入急性毒性作为动物试验的替代品.内肺内肺内喷雾内肺内喷雾毒性预测毒性预测

更多相关视频

Development of a Nose-only Inhalation Toxicity Test Chamber That Provides Four Exposure Concentrations of Nano-sized Particles

Development of a Nose-only Inhalation Toxicity Test Chamber That Provides Four Exposure Concentrations of Nano-sized Particles

Published on: March 18, 2019

Assessment of the Acute Inhalation Toxicity of Airborne Particles by Exposing Cultivated Human Lung Cells at the Air-Liquid Interface

Assessment of the Acute Inhalation Toxicity of Airborne Particles by Exposing Cultivated Human Lung Cells at the Air-Liquid Interface

Published on: February 23, 2020

相关概念视频

Toxicity Testing in Animals

Toxicity Testing in Animals

Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...