Abstract
This study reviews current understanding of mechanisms of biotransformation of organophosphorus compounds (OPC). The first part of this article covers chemical aspects of biotransformation describing reactions that lead to activation or detoxication of OPC. The second part explains biochemical mechanisms of biotransformation describing the role of enzymes that are involved in this process. Among them are the enzymes that take part in metabolic activation of OPC such as cytochrome P450 system, NADPH–cytochrome P450 reductase and flavin-containing monooxygenases. Among enzymes participating in detoxication of OPC, the role of phosphoric triester hydrolases, carboxylesterases and glutathione redox system is explained. This article also deals with other aspects of detoxication of OPC such as protein binding and the role of tissue depots for these compounds.
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