Inhibition of Prostaglandin E2 Production by Platycodin D Isolated from the Root of Platycodon grandiflorum
- 31 December 2001
- journal article
- letter
- Published by Georg Thieme Verlag KG in Planta Medica
- Vol. 67 (4) , 362-364
- https://doi.org/10.1055/s-2001-14317
Abstract
Platycodin D, isolated from the root of Platycodon grandiflorum A. DC. (Campanulaceae) suppressed prostaglandin E2 production at 10 and 30 μM in rat peritoneal macrophages stimulated by the protein kinase C activator 12-O-tetradecanoylphorbol 13-acetate (TPA). Platycodin D3 and oleanolic acid showed no effect at these concentrations. Western blot analysis revealed that the induction of COX-2 protein by TPA was inhibited by platycodin D in parallel with the inhibition of prostaglandin E2 production. Platycodin D showed no direct effect on COX-1 and COX-2 activities. TPA-induced release of [3 H]arachidonic acid from pre-labeled macrophages was also not inhibited by platycodin D.Keywords
This publication has 0 references indexed in Scilit: