New method for the determination of the half inhibition concentration (IC50) of cholinesterase inhibitors
Language English Country Germany Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
23819309
Knihovny.cz E-resources
- MeSH
- Cholinesterase Inhibitors pharmacology MeSH
- Inhibitory Concentration 50 MeSH
- Hydrogen-Ion Concentration MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Cholinesterase Inhibitors MeSH
A new and simple analytical method is described for the determination of the IC50 values of the inhibitors of the hydrolysis of acetylcholine (ACh) or acetylthiocholine (ATCh) by cholinesterases. The method is based on monitoring the time course of the pH value during the uninhibited and inhibited reaction. It requires only a pH meter with a suitable pH measuring cell and a small thermostated stirred batch reactor. The method has been validated for twelve different types of cholinesterase inhibitors. The determined IC50 values are comparable to those obtained by independent, more complicated, and expensive methods (Ellman's and pH-stat).
