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Annual Review of Pharmacology and Toxicology

Volume 59, 2019

Novel Clinical Toxicology and Pharmacology of Organophosphorus Insecticide Self-Poisoning

Abstract

Organophosphorus insecticide self-poisoning is a major global health problem, killing over 100,000 people annually. It is a complex multi-organ condition, involving the inhibition of cholinesterases, and perhaps other enzymes, and the effects of large doses of ingested solvents. Variability between organophosphorus insecticides—in lipophilicity, speed of activation, speed and potency of acetylcholinesterase inhibition, and in the chemical groups attached to the phosphorus—results in variable speed of poisoning onset, severity, clinical toxidrome, and case fatality. Current treatment is modestly effective, aiming only to reactivate acetylcholinesterase and counter the effects of excess acetylcholine at muscarinic receptors. Rapid titration of atropine during resuscitation is lifesaving and can be performed in the absence of oxygen. The role of oximes in therapy remains unclear. Novel antidotes have been tested in small trials, but the great variability in poisoning makes interpretation of such trials difficult. More effort is required to test treatments in adequately powered studies.

Keyword(s): highly hazardous pesticides, insecticide, organophosphate, suicide
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2019-01-06
2024-04-24
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/content/journals/10.1146/annurev-pharmtox-010818-021842
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Novel Clinical Toxicology and Pharmacology of Organophosphorus Insecticide Self-Poisoning
Annual Review of Pharmacology and Toxicology 59, 341 (2019); https://doi.org/10.1146/annurev-pharmtox-010818-021842
/content/journals/10.1146/annurev-pharmtox-010818-021842
/content/journals/10.1146/annurev-pharmtox-010818-021842
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  • Article Type: Review Article

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