Diisopropylfluorophosphate (DFP) volatizes and cross-contaminates wells in a common 96-well plate zebrafish larvae exposure method
Mundy, P. C.; Mendieta, R.; Lein, P. J.
Show abstract
Diisopropylfluorophosphate (DFP) is an organophosphate (OP) that is commonly used to study the neurotoxic effects of acutely intoxicating OP exposure. In preliminary studies, we discovered abnormal deaths in DMSO-only exposed larvae housed in the same plate as DFP-exposed larvae, and hypothesized that DFP volatilizes and cross-contaminates wells when using a 96-well plate exposure method for exposing zebrafish larvae. Survivability and acetylcholinesterase activity assays confirmed DFP presence in the tissues of zebrafish ostensibly exposed to DMSO only. These findings indicate DFP cross-contamination, which raises concerns for the experimental design of studies evaluating the toxicity of volatile and semi-volatile substances.
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