The effect of humulene, caryophyllene and caryophylllene oxide on the selected hepatic biotransformation enzymes

Charles University Faculty of Pharmacy in Hradec Králové Department of Biochemical Sciences Candidate: Thuy Linh Nguyen Supervisor: Prof. RNDr. Lenka Skálová, Ph.D. Title of diploma thesis: The effect of humulene, caryophyllene and caryophyllene oxide on the activity of selected liver biotransformation enzymes Sesquiterpenes, secondary metabolites of higher plants, are formed from three isoprenoid units. They possess interesting biological activities, e.g. antibacterial, antimalarial or anticarcinogenic activities, however they could also influence the activity and/or the expression of biotransformation enzymes. The aim of this diploma thesis was to evaluate the effect of α-humulene (HUM), β-caryophyllene (CAR) and β-caryophyllene oxide (CAO) on the activity and expression of enzymes of phase I and II of xenobiotics biotransformation. In the first study, the potential inhibitory effect of HUM, CAO and CAR on the activity of selected enzymes in subcellular fractions obtained from rat liver homogenates was studied. In the second study, HUM, CAO and CAR were incubated with primary cultures of rat hepatocytes for 24 hours to determine the impact of sesquiterpenes on the viability of hepatocytes and potential modulatory effects of HUM, CAO, CAR on the activity and expression of selected..