Investigation of the toxicological and inhibitory effects of some benzimidazole agents on acetylcholinesterase and butyrylcholinesterase enzymes
Fikret Türkan
Received 18 Mar 2019, Accepted 08 May 2019, Published online: 28 May 2019
Download citation  https://doi.org/10.1080/13813455.2019.1618341 

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Abstract
Benzimidazole, an anthelmintic used in the manufacture of human and veterinary drugs, is an important heterocyclic compound. In this work, I investigated the effect of drugs such as ricobendazole, thiabendazole, albendazole, and oxfendazole, on Acetylcholinesterase (AChE) and Butyrylcholinesterase (BChE) enzyme activity. As kinetic studies, Ki and IC50 values were calculated separately for each drug, respectively. Study findings have shown that benzimidazoles inhibit both AChE and BChE enzymes at the nanomolar level. The compound that best was inhibited the AChE enzyme ricobendazole, and it was that the best inhibited the BChE enzyme thiabendazole. IC50 and Ki values were calculated 123.02 nM, 28.68 ± 8.46 nM for AChE and 64.26 nM, 12.08 ± 2.18 nM for BChE respectively. The types of inhibition indicated by the drugs were investigated and they were found to show non-competitive inhibition.

Keywords: Inhibition, benzimidazoles, acetylcholinesterase, butyrylcholinesterase