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Toxicol Sci:研究人员提出增塑剂等内分泌干扰物替代品的筛选四步法

2017-11-20 Emma MedSci原创

内分泌干扰化学物,如增塑剂邻苯二甲酸二(2-乙基己基)酯(DEHP)等带来的健康和经济负担促使生产商开发工业替代品。

内分泌干扰化学物,如增塑剂邻苯二甲酸二(2-乙基己基)酯(DEHP)等带来的健康和经济负担促使生产商开发工业替代品。 然而,由于目前还没有确保这些替代品安全性的标准,导致替代品可能对健康产生相似或更差的负面影响。科学家,监管机构和业界越来越认识到,需要积极的方法来开发安全的化学替代品。研究人员提出了一个针对替代化学品的4步法,进行设计、表征和毒理学测试,并针对DEHP替代品进行研究说明。

研究人员的方法包括:(1)基于创新的化学结构和环境考虑,设计和表征替代化学品;(2)基于细胞的高通量和选择性体外研究以预选最无害的替代物;(3)急性毒性体内研究,以排除所选替代物的明显毒性;(4)在子宫内和哺乳期进行选择的替代物与目前使用的替代物的影响的比较研究,并且特别关注哺乳期之后的常见的表型。

研究人员使用这4步法,已经确定了2种替代化学品,与DEHP相比,具有良好的塑化性能,更好的生物降解性和更少的浸出,而且没有任何明显的体内毒性。 迄今为止,这一过程已被证明可用于主动识别DEHP的可靠化学替代品。

原始出处:
Albert O, et al. Identifying Greener and Safer Plasticizers: A 4-Step Approach. Toxicol Sci. 2017 Aug 2. doi: 10.1093/toxsci/kfx156.

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    2017-12-18 gwc392
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