Skip to content
2000
Volume 17, Issue 3
  • ISSN: 0929-8665
  • E-ISSN: 1875-5305

Abstract

Aflatoxins are group of secondary metabolites from moulds. The main toxic effect of alfatoxins on body is based on metabolic activation on cytochrome P450 system. Recently, some studies appointed at anticholinergic properties of aflatoxins and inhibition of acetylcholinesterases (AChE) was described. Inhibition is reversible; however, some questions arose. Is the interaction firmly enough to prevent distribution of aflatoxins in body? Could be AChE considered as a scavenger of aflatoxins? Amperometric biosensor with immobilized acetylcholinesterase was used for evaluation of aflatoxin B1 (AFB1) - AChE complex spontaneous dissociation, where AFB1 acts as an inhibitor. Displacement of solution with substrate and AFB1 by the intact one enabled estimation of dissociation kinetics. The dissociation rate constant kdis was found 0.0047 ± 0.0005 s-1. The half time (t1/2) of complex dissociation was 146 s. The achieved data appoint at fact that AChE could allow to distribute aflatoxins in body instead acting as a scavenger. Analytical impact of study is discussed, too.

Loading

Article metrics loading...

/content/journals/ppl/10.2174/092986610790780396
2010-03-01
2025-06-02
Loading full text...

Full text loading...

/content/journals/ppl/10.2174/092986610790780396
Loading

  • Article Type:
    Research Article
Keyword(s): Aflatoxin; biosensor; cholinesterase; inhibition; mycotoxin
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error
Please enter a valid_number test