期刊
REGULATORY TOXICOLOGY AND PHARMACOLOGY
卷 75, 期 -, 页码 46-57出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.yrtph.2015.12.014
关键词
Adverse outcome pathway; Weight of evidence; Quantitative AOP; Molecular initiating event; Mode of action; Key event relationships; Bradford Hill criteria
资金
- US Army Environmental Quality/Installations (EQ/I) research program
The adverse outcome pathway (AOP) is a framework to mechanistically link molecular initiating events to adverse biological outcomes. From a regulatory perspective, it is of crucial importance to determine the confidence for the AOP in question as well as the quality of data available in supporting this evaluation. A weight of evidence approach has been proposed for this task, but many of the existing frameworks for weight of evidence evaluation are qualitative and there is not clear guidance regarding how weight of evidence should be calculated for an AOP. In this paper we advocate the use of a subject matter expertise driven approach for weight of evidence evaluation based on criteria and metrics related to data quality and the strength of causal linkages between key events. As a demonstration, we notionally determine weight of evidence scores for two AOPs: Non-competitive ionotropic GABA receptor antagonism leading to epileptic seizures, and Antagonist-binding and stabilization of a co-repressor to the peroxisome proliferator-activated receptor alpha (PPAR alpha) signaling complex ultimately causing starvation like weight loss. Published by Elsevier Ltd.
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