title: Platelet antiaggregating activity of ginsenosides isolated from processed ginseng.
abstract: Four dammarane glycosides, namely ginsenosides Rk1 (1), Rg5 (2), 20(S)-Rg3 (3), and 20(R)-Rg3 (4), isolated from a new processed ginseng, were evaluated for their inhibitory activity against platelet aggregation induced by adenosine diphosphate (ADP), collagen, arachidonic acid (AA) and U46619 (thromboxane A2 mimetic agent). Ginsenoside Rk1 and Rg5 inhibited AA-induced platelet aggregation in a dose dependent manner. Their activity against AA-induced platelet aggregation were found to be 8-22 fold higher than that of a known antiplatelet drug acetylsalicylic acid (ASA). They also inhibited U46619-induced platelet aggregation. Ginsenoside 20(S)-Rg3 and 20(R)-Rg3 showed mild inhibitory activity against AA and U46619-induced aggregation.
authors.affiliation: College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea.
authors.forename: Jin Gyun
authors.initials: JG
authors.lastname: Lee
authors.forename: Yong Yook
authors.initials: YY
authors.lastname: Lee
authors.forename: Sun Young
authors.initials: SY
authors.lastname: Kim
authors.forename: Jae Sung
authors.initials: JS
authors.lastname: Pyo
authors.forename: Hye Sook
authors.initials: HS
authors.lastname: Yun-Choi
authors.forename: Jeong Hill
authors.initials: JH
authors.lastname: Park
mesh_terms: D019796:15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid / Q000494:pharmacology; D000818:Animals; D016718:Arachidonic Acid / Q000494:pharmacology; D003094:Collagen / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D036145:Ginsenosides / Q000302:isolation & purification / Q000494:pharmacology*; D066298:In Vitro Techniques; D008297:Male; D005894:Panax / Q000737:chemistry*; D010974:Platelet Aggregation / Q000187:drug effects*; D010975:Platelet Aggregation Inhibitors / Q000302:isolation & purification / Q000494:pharmacology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D014662:Vasoconstrictor Agents / Q000494:pharmacology
chemical_list: D036145:Ginsenosides; D010975:Platelet Aggregation Inhibitors; D014662:Vasoconstrictor Agents; D016718:Arachidonic Acid; D019796:15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid; D003094:Collagen