[Synthetic bioantioxidants--inhibitors of acetylcholinesterase activity].
1992
: The inhibitory effects of synthetic antioxidants (3-oxypyridine, pyrimidine and hindered phenols) on the enzymic activity of membrane-bound acetylcholinesterase (AChE) was studied. In terms of estimated kinetic characteristics of AChE-reaction (KM, Vmax, KI), the pattern of enzyme inhibition by the hindered phenol compounds was found to be of non-competitive or mixed type depending on the inhibitor structure or on the substrate acetylcholine or acetylthiocholine used. The comparative study of the inhibitory action of water-soluble derivatives of hindered phenols and fatty-soluble ionol made it possible to reveal possible contributions to the inhibition of both direct and mediated (by the membrane microsurroundings) effects on the membrane-bound AChE by the studied synthetic bioantioxidants.
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