VX nerve agent,  which has been in the news lately with the killing of Kim Jong-nam, is another example of an organophosphate anticholinesterase.

The newspapers and other media have recently reported that it was the VX nerve agent that was used to kill Kim Jong-nam, the half-brother of North Korea’s leader, in Malaysia. VX nerve agent is an example of an organophosphate anticholinesterase. Other examples of organophosphate anticholinesterases include the chemical weapon sarin and the organophosphate insecticides such as a malathion.

VX (S-2 Diisoprophylaminoethyl methylphosphonothiolate) is one of the most toxic nerve agent known. It is especially insidious as it is a highly viscous, tasteless and odourless liquid that can easily be transferred via clothing to be absorbed into the body by inhalation, ingestion, skin contact, or eye contact.

Although more potent and fast-acting, the effects of VX poisoning would be the same as for any organophosphate anticholinesterase. Inhibition of acetylcholinesterase will result in increased levels of acetylcholine at all cholinergic synapses in the body.

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