Characterization of flubendazol reduction in human in vitro

ASBSTRACT Charles University Faculty of Pharmacy in Hradec Králové Department of Biochemical Sciences Candidate: Mgr. Jana Štěpánková Supervisor: Prof. Ing. Barbora Szotáková, Ph.D. Title of Thesis: Characterization of flubendazol reduction in human in vitro Flubendazole (FLU) is an anthelmintic of the benzimidazole type used as a treatment or prophylaxis of helminthoses in livestock and wild animals. FLU is also registered for the treatment of parasitic diseases caused by intestinal nematodes in humans. Its mechanism of action lies in its specific binding to tubulin, which disrupts the structure and function of microtubules for the therapy of parasitosis in humans. The advantage of this drug is also the low systemic toxicity. That is why the anticancer activity of FLU is now under study. The aim of this rigorous work was to characterize the reduction of FLU in human liver subcellular fractions as this information is still lacking in available literature. Stereospecificity, subcellular localization, preference of coenzymes, enzyme kinetics of FLU reduction, and activity of enzymes involved in FLU reduction were studied in this project. Measurement results have shown that FLU is predominantly reduced in cytosol and nicotinamide adenine dinucleotide phosphate reduced (NADPH) coenzyme is preferred. FLU..