Abstract
During chronic intoxication by diisopropyl fluorophosphate (Isoflurophate, DFP; s.c. treatment on alternate days - first dose of 1.1 mg/kg, subsequent doses of 0.7 mg/kg each until the 23rd day) a partial recovery of enzymatic activity was found at 24 h after each DFP administration. Relative to maximal AChE depression at 90 min, these rises were more pronounced in the soluble portion of the enzyme than in total enzyme preparation, i.e., that containing mainly membrane-bound AChE. Moreover, from the 2nd DFP administration on, there was a persistent increase of medium-molecular-weight forms both in soluble and in total AChE. The results suggest an important role of the soluble portion of AChE and of medium forms in the process of recovery of enzymatic activity.
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More From: Archives of toxicology. Supplement. = Archiv fur Toxikologie. Supplement
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