title: Anti-inflammatory activity of Leontopodium alpinum and its constituents.
abstract: The aerial parts and roots of Leontopodium alpinum Cass. (Asteraceae) were investigated for their in vivo topical anti-inflammatory activity using the inhibition of Croton oil-induced ear dermatitis in mice. For both of the plant parts, the dichloromethane extract induced a dose-dependent oedema reduction, being more active than the methanol and 70% aqueous methanol ex-tracts. Moreover, the dichloromethane extract of the aerial parts was more active than that of the roots (ID50 = 221 and 338 pg/cm2, respectively). Fatty acids make a significant contribution to the anti-oedema activity of the dichloromethane extract of the aerial parts, whereas bisabolane sesquiterpenes, tricyclic sesquiterpenes, coumarins and lignans are involved in the activity of the root extract. Two bisabolane derivatives reduced also the polymorphonuclear neutrophil leukocytes accumulation in the inflamed tissue, while a 7a-silphiperfol-5-ene type sesquiterpene and a coumarin derivative inhibited the in vitro chemotaxis of these inflammatory cells.
authors.affiliation: Institut für Pharmazie, Abteilung Pharmakognosie, Leopold-Franzens-Universität Innsbruck, Innrain 52, 6020 Innsbruck, Austria.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Dobner
authors.forename: Silvio
authors.initials: S
authors.lastname: Sosa
authors.forename: Stefan
authors.initials: S
authors.lastname: Schwaiger
authors.forename: Gianmario
authors.initials: G
authors.lastname: Altinier
authors.forename: Roberto
authors.initials: R
authors.lastname: Della Loggia
authors.forename: Nicole C
authors.initials: NC
authors.lastname: Kaneider
authors.forename: Hermann
authors.initials: H
authors.lastname: Stuppner
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D019659:Asteraceae; D002464:Cell Migration Inhibition; D003436:Croton Oil; D004305:Dose-Response Relationship, Drug; D004487:Edema / Q000139:chemically induced / Q000517:prevention & control*; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D008517:Phytotherapy; D035261:Plant Components, Aerial; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D018517:Plant Roots
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D010936:Plant Extracts; D003436:Croton Oil