Planta Med 2000; 66(3): 199-205
DOI: 10.1055/s-2000-8566
Original Paper
Georg Thieme Verlag Stuttgart · New York

Effect of Sesquiterpene Lactones on Antioxidant Enzymes and Some Drug-Metabolizing Enzymes in Rat Liver and Kidney

Jadwiga Jodynis-Liebert1,*, Marek Murias1 , Elżbieta  Błoszyk2
  • 1 Department of Toxicology, Karol Marcinkowski University of Medical Sicences, Poznań, Poland
  • 2 Department of Medical Plants, Karol Marcinkowski University of Medical Sciences, Poznań, Poland
Further Information

Publication History

Publication Date:
31 December 2000 (online)

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Abstract

Previously we have reported that several sesquiterpene lactones isolated from Helenium aromaticum and Telekia speciosa showed pro-oxidative properties and caused glutathione level depletion in rat liver in vivo. In the present study we examined the in vivo effect of these lactones on antioxidant enzyme systems and some drug metabolizing enzymes in the liver and the kidney of rats. We found that the majority of the compounds increased the hepatic activity of glutathione peroxidase (GPx), glutathione reductase (GR), and catalase (CAT), but superoxide dismutase (SOD) activity was distinctly lowered by five lactones. A few of the compounds tested caused a decrease in the hepatic cytochrome P450 content and reduced the activity of NADPH-cytochrome P450 reductase, aminopyrine demethylase, aniline hydroxylase and glutathione-S-transferase. Results for the kidney showed fewer changes in activities of both classes of enzymes when compared to the liver. Not all lactones affected the enzymes under test, the most active were: linifolin, helenalin, mexicanin I and telekin. 6α-Hydroxy-2,3-dihydroaromaticin behaved differently towards monooxygenases since it induced the activity of aminopyrine demethylase and aniline hydroxylase.

Abbreviations

GPx:glutathione peroxidase CAT:catalase SOD:superoxide dismutase G6PD:glucose-6-phosphate dehydrogenase GST:glutathione-S-transferase GR:glutathione reductase CDNB:1-chloro-2,4-dinitrobenzene