Summary
This study developed a larval zebrafish model for high-throughput screening of therapeutics against organophosphorus nerve agent and pesticide exposure, finding toxicity profiles and oxime reactivation responses comparable to established rodent models. The visual motor response—a light-dependent behavioral assay—was used to demonstrate superior efficacy of centrally acting oximes over peripherally restricted ones.
Key Findings
- Relative lethality rankings across seven organophosphorus compounds in larval zebrafish were consistent with established rodent models, with chemical warfare agents proving more lethal than organophosphorus pesticides.
- Centrally acting oxime reactivators showed greater efficacy than peripherally confined oximes as measured by the visual motor response behavioral assay.
- Organophosphorus-specific acetylcholinesterase reactivation responses to oxime treatment were comparable to previously reported values in other models.
Categories
Eye Health & Vision: The visual motor response assay in larval zebrafish uses light-dependent behavior as a readout, implicating visual/retinal pathways in the toxicological screening methodology.
Author(s)
JA Koenig, C Acon Chen, TM Shih
Publication Year
2020
Number of Citations
10
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