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Different effects of nine clausenamide ennatiomers on liver glutathione biosynthesis and glutathione S-transferase activity in mice
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Different effects of nine clausenamide ennatiomers on liver glutathione biosynthesis and glutathione S-transferase activity in mice
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Journal Article
Different effects of nine clausenamide ennatiomers on liver glutathione biosynthesis and glutathione S-transferase activity in mice
2006
Overview
Aim： To study the effects of nine synthetic clausenamide with different stereo structures on liver glutathione （GSH） biosynthesis and glutathione S-transferase （GST） activity in mice. Methods： The nine test compounds were racemic mixtures and their ennatiomers of clausenamide, neoclausenamide and epineoclausenamide. Mice were administered clausenamide 250 mg/kg once daily for 3 consecutive days, ig, and were killed 24 h after the last dosing. The mouse liver cytosol GSH and GST were determined with related biochemical methods. Results： Nine clausenamides exhibited different effects on liver GSH and GST. Of nine clausenamides, only （＋） and （＋）clausenamide markedly increased liver cytosol GSH content. The mechanism of increasing liver GSH content of （＋）clausenamide is mainly due to stimulating the key limiting enzyme γ-glutamylcysteine synthetase （γ-GCS） activity for GSH biosynthesis. The other test clausenamides had no such effect on liver GSH. All of the nine clausenamides induced a significant increase of GST activity. Conclusion： The effects of clausenamide ennatiomers on liver GST and GSH varied with the alterations of their spatial structures. （＋）Clausenamide stimulated liver GSH biosynthesis through enhancing γ-GCS activity.
Publisher
Blackwell Publishing Asia,Nature Publishing Group
Subject
/ Glutamate-Cysteine Ligase - metabolism
/ Glutathione Peroxidase - metabolism
/ Glutathione Reductase - metabolism
/ Glutathione Transferase - metabolism
/ Lactams - chemical synthesis
/ Lignans - chemical synthesis
/ Male
/ Mice
/ Structure-Activity Relationship
/ γ‐glutamylcysteine synthetase
/ 生物活性
/ 肝疾病
/ 药物活性
/ 谷胱甘肽
