From pyridinium-based to centrally active acetylcholinesterase reactivators

Mini Rev Med Chem. 2014;14(3):215-21. doi: 10.2174/1389557514666140219103138.

Abstract

Organophosphates are used as pesticides or misused as warfare nerve agents. Exposure to them can be fatal and death is usually caused by respiratory arrest. For almost six decades, pyridinium oximes represent a therapeutic tool used for the management of poisoning with organophosphorus (OP) compounds. However, these compounds possess several drawbacks. Firstly, they are inefficient in the restoration of brain acetylcholinesterase (AChE) activity due to a hard blood-brain barrier penetration. Secondly, there is no broad-spectrum AChE reactivator. Lastly, none of the oximes can reactivate "aged" AChE. In this context, uncharged reactivators represent a new hope in a way of increased bioavailability in the central compartment and better therapeutic management of the OP poisoning.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Acetylcholinesterase / metabolism*
  • Animals
  • Cholinesterase Reactivators / chemistry
  • Cholinesterase Reactivators / pharmacology*
  • Cholinesterase Reactivators / therapeutic use
  • Drug Discovery
  • Humans
  • Organophosphate Poisoning / drug therapy
  • Pyridinium Compounds / chemistry
  • Pyridinium Compounds / pharmacology*
  • Pyridinium Compounds / therapeutic use

Substances

  • Cholinesterase Reactivators
  • Pyridinium Compounds
  • Acetylcholinesterase