Biotransformation of cyclosporin in primary rat, porcine and human liver cell co-cultures
| Autor: | A. Acikgoez, Jürgen Klempnauer, Nils R. Frühauf, Uwe Christians, O Crome, Eva Schmelzer, Augustinus Bader |
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| Rok vydání: | 2006 |
| Předmět: |
Cell type
Time Factors Swine Health Toxicology and Mutagenesis Metabolite Cell Serum Albumin Human Biology Toxicology Biochemistry chemistry.chemical_compound Microscopy Electron Transmission In vivo Insulin Regular Human medicine Animals Humans Insulin Biotransformation Cells Cultured Serum Albumin Pharmacology Liver cell Albumin General Medicine Coculture Techniques Rats Insulin Long-Acting medicine.anatomical_structure chemistry Cell culture Cyclosporine Hepatocytes Drug metabolism |
| Zdroj: | Xenobiotica; the fate of foreign compounds in biological systems. 36(8) |
| ISSN: | 0049-8254 |
| Popis: | The purpose of this study was to investigate the species-specific cyclosporin biotransformation in primary rat, human, and porcine liver cell cultures, and to investigate the suitability of a modified sandwich culture technique with non-purified liver cell co-cultures for drug metabolism studies. A sandwich culture was found to enhance hepatocellular metabolic activity and improve cellular morphology and ultrastructure. The cyclosporin metabolites AM9 and AM1 were formed in porcine and human liver cell sandwich co-cultures at levels corresponding to the respective in vivo situations. In contrast, metabolite profiles in rat hepatocytes were at variance with the in vivo situation. However, for all cell types, the overall metabolic activity was positively influenced by sandwich co-culture. The initial levels of albumin synthesis were higher in sandwich cultures than in those without matrix overlay. It is hypothesized that the sandwich culture system provides an improved microenvironment and is, therefore, an advantageous tool for in vitro studies of drug metabolism. |
| Databáze: | OpenAIRE |
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