Abstract
Phosphotriesterases (PTE) are a new and promising approach for the treatment of organophosphate poisoning, since the current therapy of such intoxications shows some limitations. A previous rat in vivo study confirmed the therapeutic effect of PTE, which were specifically designed for VX breakdown, and demonstrated rapid degradation of VX in whole blood samples. The present study now focuses on the degradation of VX and its distribution in organ tissues of the animals used in the aforementioned study. In order to gain a broader overview, we have extended the investigations to the VX metabolites EA-2192 and EMPA by using methods developed for an LC-ESI-MS/MS system. Applying these methods, we were able to verify the effectiveness of the PTE treatment and gained an overview of VX tissue distribution in poisoned but untreated rats.
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