title: Inhibitory effect of andrographolide from Andrographis paniculata on PAF-induced platelet aggregation.
abstract: Andrographolide, an active principle of the Chinese drug Andrographis paniculata, used for prevention and treatment of common cold in Scandinavia and known as an antiinflammatory, antiviral, antithrombotic, hypotensive and antiatherosclerotic drug, was investigated for its suggested influence on the biosynthesis of eicosanoids and the platelet-activating factor (PAF). Whereas in isolated human polymorph-nuclear leukocytes (PMNL) no influence on the biosynthesis was found, it could be shown that andrographolide inhibits PAF-induced human blood platelet aggregation in a dose dependent manner (IC50-5 microM). These results indicate that andrographolide has a mechanism of action different from that of non-steroidal antiinflammatory drugs (NSAID) and most likely associated with the cardiovascular and antithrombotic activity described of Andrographis paniculata.
authors.affiliation: Yerevan State Medical University, Armenia.
authors.forename: E
authors.initials: E
authors.lastname: Amroyan
authors.forename: E
authors.initials: E
authors.lastname: Gabrielian
authors.forename: A
authors.initials: A
authors.lastname: Panossian
authors.forename: G
authors.initials: G
authors.lastname: Wikman
authors.forename: H
authors.initials: H
authors.lastname: Wagner
mesh_terms: D000328:Adult; D016718:Arachidonic Acid / Q000097:blood; D002851:Chromatography, High Pressure Liquid; D004224:Diterpenes / Q000494:pharmacology*; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D006801:Humans; D066298:In Vitro Techniques; D010972:Platelet Activating Factor / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D010974:Platelet Aggregation / Q000187:drug effects*; D010975:Platelet Aggregation Inhibitors / Q000494:pharmacology*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004224:Diterpenes; D004365:Drugs, Chinese Herbal; D010972:Platelet Activating Factor; D010975:Platelet Aggregation Inhibitors; D016718:Arachidonic Acid; C030419:andrographolide