Cetaben and fibrates both influence the activities of peroxisomal enzymes in different ways.
The effects of cetaben and clofibric acid were compared on the activities of peroxisomal enzymes in the liver and kidney of male Wistar rats. Cetaben at 200 mg/kg body wt increased the activities of all of the enzymes in the liver that were studied two to eight times, whereas the changes induced by the same dose of clofibric acid increased some of the enzymes and decreased others. In the kidney, cetaben increased the activities of all investigated peroxisomal enzymes, while clofibric acid only increased the activity of palmitoyl-CoA oxidase. The data obtained in the dose-response study of cetaben revealed a significant rise in the activities of peroxisomal enzymes in both the liver and kidney at doses of 50-100 mg/kg body wt administered over 10 days, but the maximal effect was observed at 250 mg/kg. Palmitoyl-CoA oxidase and D-amino acid oxidase respond most markedly to cetaben. Cetaben could represent an atypical peroxisomal proliferator, since it increased the activities of all peroxisomal enzymes investigated. The fact that the individual components localized in the peroxisomes do not change markedly could be of importance with respect to the function and physical properties of peroxisomes.[1]References
- Cetaben and fibrates both influence the activities of peroxisomal enzymes in different ways. Chandoga, J., Rojeková, I., Hampl, L., Hocman, G. Biochem. Pharmacol. (1994) [Pubmed]
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