Inhibition of prostaglandin E2 production by platycodin D isolated from the root of Platycodon grandiflorum.
Platycodin D, isolated from the root of Platycodon grandiflorum A. DC. (Campanulaceae) suppressed prostaglandin E2 production at 10 and 30 microM 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 [3H]arachidonic acid from pre-labeled macrophages was also not inhibited by platycodin D.
Kim
Y P
YP
Lee
E B
EB
Kim
S Y
SY
Li
D
D
Ban
H S
HS
Lim
S S
SS
Shin
K H
KH
Ohuchi
K
K
D000818:Animals; D016718:Arachidonic Acid / Q000378:metabolism; D002478:Cells, Cultured / Q000187:drug effects* / Q000378:metabolism; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2; D003907:Dexamethasone / Q000494:pharmacology; D015232:Dinoprostone / Q000032:analysis / Q000037:antagonists & inhibitors* / Q000378:metabolism*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D004790:Enzyme Induction / Q000187:drug effects; D007213:Indomethacin / Q000494:pharmacology; D007527:Isoenzymes / Q000378:metabolism; D017737:Macrophages, Peritoneal / Q000187:drug effects* / Q000378:metabolism; D008565:Membrane Proteins; D009828:Oleanolic Acid / Q000737:chemistry / Q000494:pharmacology; D018517:Plant Roots / Q000737:chemistry*; D011451:Prostaglandin-Endoperoxide Synthases / Q000378:metabolism; D011493:Protein Kinase C / Q000187:drug effects; D051381:Rats; D017207:Rats, Sprague-Dawley; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014315:Triterpenes
D004365:Drugs, Chinese Herbal; D007527:Isoenzymes; D008565:Membrane Proteins; D012503:Saponins; D014315:Triterpenes; C431483:platycodin D3; D016718:Arachidonic Acid; D009828:Oleanolic Acid; D003907:Dexamethasone; C108953:platycodin D; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2; D011451:Prostaglandin-Endoperoxide Synthases; C496513:Ptgs1 protein, rat; D011493:Protein Kinase C; D015232:Dinoprostone; D013755:Tetradecanoylphorbol Acetate; D007213:Indomethacin