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Adaptation of a dynamic in vitro model with real-time determination of butyrylcholinesterase activity in the presence of cyclosarin and an oxime
- Source :
- Toxicology in vitro : an international journal published in association with BIBRA. 29(1)
- Publication Year :
- 2014
-
Abstract
- The well-established dynamic in vitro model for the real-time determination of acetylcholinesterase activity was modified for use of human butyrylcholinesterase (BChE) activity. Human plasma as BChE source was layered on a syringe filter and the enzyme reactor was continuously perfused with phosphate buffer, butyrylthiocholine and Ellman’s reagent at pH 7.4 and 37 °C which resulted in a stable BChE activity for up to 240 min. Then, the model was applied for investigating the suitability of human BChE in combination with an oxime (HLo 7) to serve as a ‘pseudo-catalytic’ scavenger of the organophosphorus nerve agent cyclosarin. The application of different perfusion protocols demonstrated the ability of BChE-oxime combinations to prevent BChE from irreversible inhibition by cyclosarin even at toxicologically relevant concentrations. In the end, this model seems to be suitable for the investigation of human plasma BChE as an endogenous, ‘pseudo-catalytic’ scavenger of a variety of nerve agents.
- Subjects :
- chemistry.chemical_classification
Cholinesterase Reactivators
Chemistry
Butyrylthiocholine
Cyclosarin
Pyridinium Compounds
General Medicine
In Vitro Techniques
Toxicology
Oxime
Acetylcholinesterase
In vitro
Perfusion
chemistry.chemical_compound
Organophosphorus Compounds
Biochemistry
Butyrylcholinesterase
medicine
Organophosphorus compound
Humans
Cholinesterase Inhibitors
Nerve agent
medicine.drug
Subjects
Details
- ISSN :
- 18793177
- Volume :
- 29
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Toxicology in vitro : an international journal published in association with BIBRA
- Accession number :
- edsair.doi.dedup.....d1fdf4977d960631edf1643fcbc43bff