title: Pharmacokinetic and pharmacodynamic interactions of morin and cyclosporin.
abstract: Morin is a flavonoid present in mulberry and herbs. We have reported that morin exerted anti-inflammatory activity on the activated macrophages. Cyclosporin (CsA) is a potent immunosuppressive agent with narrow therapeutic range, which is widely used for the treatments of autoimmune diseases and transplantation rejection. This study aimed to measure the effects of morin on the disposition of CsA in lymphoid and non-lymphoid tissues, and on the functions of immune cells in mice. CsA (Neoral, 10 mg/kg) was orally administered with and without a concomitant dose of morin (0, 50, 100, 200 mg/kg) to mice once daily for 2 weeks. CsA concentrations in blood, liver, kidney, and spleen were determined by a specific monoclonal fluorescence polarization immunoassay. The decreased levels of CsA in tissues were found well correlated to increased doses of morin. The coadministration of 200 mg/kg morin significantly decreased CsA in blood, liver, kidney, and spleen by 33%, 17%, 38%, and 45%, respectively. On the other hand, coadministration of morin decreased dramatically the nitric oxide production by the activated macrophages when compared to CsA treatment alone. Moreover, morin maintained the level of CsA-suppressed T helper 1 (Th1) type cytokine, although the CsA concentration in spleen was markedly reduced. In conclusion, morin coadministration profoundly reduced CsA concentration but did not significantly alter the CsA-suppressed Th1 immune response in mice.
authors.affiliation: Department of Microbiology, School of Medicine, China Medical University, Taichung, Taiwan. shfang@mail.cmu.edu.tw
authors.forename: Shih-Hua
authors.initials: SH
authors.lastname: Fang
authors.forename: Yu-Chi
authors.initials: YC
authors.lastname: Hou
authors.forename: Pei-Dawn Lee
authors.initials: PD
authors.lastname: Chao
mesh_terms: D000818:Animals; D016175:B-Lymphocyte Subsets / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D018414:CD8-Positive T-Lymphocytes / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D002478:Cells, Cultured; D016572:Cyclosporine / Q000037:antagonists & inhibitors* / Q000097:blood / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004338:Drug Combinations; D004347:Drug Interactions; D005419:Flavonoids / Q000097:blood / Q000494:pharmacology*; D007371:Interferon-gamma / Q000037:antagonists & inhibitors / Q000378:metabolism / Q000494:pharmacology; D007376:Interleukin-2 / Q000037:antagonists & inhibitors / Q000096:biosynthesis / Q000276:immunology / Q000378:metabolism; D007441:Intubation, Gastrointestinal; D007668:Kidney / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism; D008070:Lipopolysaccharides / Q000494:pharmacology; D008099:Liver / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism; D017737:Macrophages, Peritoneal / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C; D009569:Nitric Oxide / Q000037:antagonists & inhibitors / Q000096:biosynthesis; D013154:Spleen / Q000737:chemistry / Q000187:drug effects / Q000473:pathology; D016176:T-Lymphocyte Subsets / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D018417:Th1 Cells / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D018418:Th2 Cells / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D047309:Flavones
chemical_list: D016572:Cyclosporine; D004338:Drug Combinations; D005419:Flavonoids; D007371:Interferon-gamma; D007376:Interleukin-2; D008070:Lipopolysaccharides; D009569:Nitric Oxide; C008548:morin; D047309:Flavones