What does this research mean for the field?

Laboratory parameter-guided management based on acetylcholinesterase activity and reactivatability is crucial for identifying patients who will benefit from oxime therapy in organophosphate poisoning and avoiding unnecessary treatment. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate the clinical utility and limitations of oxime therapy in organophosphate poisoning based on acetylcholinesterase activity and reactivatability.

August 28, 2026Clinical Toxicology

Organophosphate pesticide poisoning: benefits and limitations of oxime therapy

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Authors

JCJure CrepinsekIntensive Care Foundation DSDoreen StarkIntensive Care Foundation DSDavid SteindlCharité - Universitätsmedizin Berlin

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Implication

Case series reveals that acetylcholinesterase reactivatability dictates oxime efficacy in organophosphate poisoning, highlighting the value of enzyme-guided treatment decisions.

Key Points

To evaluate the clinical utility and limitations of oxime therapy in organophosphate poisoning based on acetylcholinesterase activity and reactivatability.
Evaluated two cases of organophosphate poisoning (monocrotophos and parathion) using spectrophotometric assays for acetylcholinesterase and butyrylcholinesterase activity, enzyme reactivatability, and plasma inhibitory capacity.
Identified pesticides using gas chromatography-electron ionization mass spectrometry (GC-MS), quantified atropine via liquid chromatography-tandem mass spectrometry, and measured obidoxime levels via liquid chromatography with diode-array detection.
Monocrotophos poisoning led to completely aged acetylcholinesterase, rendering obidoxime treatment ineffective.
Parathion poisoning maintained enzyme reactivatability, allowing oxime therapy to serve as an effective therapeutic intervention.

Cite This Study

Crepinsek et al. (2026) studied this question.

synapsesocial.com/papers/6a91467bd15324a1df3aa149 https://doi.org/10.1080/15563650.2026.2707976

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Implication

Case series reveals that acetylcholinesterase reactivatability dictates oxime efficacy in organophosphate poisoning, highlighting the value of enzyme-guided treatment decisions.

Organophosphate pesticide poisoning: benefits and limitations of oxime therapy

Discussion

Member takes

Implication

Key Points

Cite This Study

Organophosphate pesticide poisoning: benefits and limitations of oxime therapy

Discussion

Member takes

Implication

Key Points

Cite This Study

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