title: Analgesic-antiinflammatory properties of Proustia pyrifolia.
abstract: The antiinflammatory (per os and topic) and analgesic (per os) properties of the aerial part of Proustia pyrifolia a species in danger of extinction were investigated, and the major compounds of two of its active extracts were isolated. In addition, the evaluation of cytotoxicity in three tumoral cell lines and the acute toxicity of the crude methanol extract were also assayed, together with the antioxidant activity for the different extracts of this species. The results of the evaluation of the topic antiinflammatory activities induced by arachidonic acid, and phorbol 12-myristate 13-acetate of the different extracts showed that this species possesses active constituents that could diminish cyclo-oxygenase and lipoxygenases activities, the enzymes that allow the synthesis of proinflammatory endogenous substances as prostaglandin E(2) and leukotrienes, respectively. Our results corroborate the antiinflammatory and analgesic effects of Proustia pyrifolia, and could justify its use in folk medicine for the treatment of rheumatic and gout illnesses. From bio-active extracts beta-sitosterol, quercetin and dihydroquercetin were obtained, and these compounds could explain in part the antiinflammatory, analgesic and antioxidant activities of this species. The crude methanol extract did not present acute toxicity or cytotoxic activity, however only this extract exhibited antioxidant activity.
authors.affiliation: Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Box 233, 1-Santiago, Chile. cdelpor@uchile.cl
authors.forename: C
authors.initials: C
authors.lastname: Delporte
authors.forename: N
authors.initials: N
authors.lastname: Backhouse
authors.forename: S
authors.initials: S
authors.lastname: Erazo
authors.forename: R
authors.initials: R
authors.lastname: Negrete
authors.forename: P
authors.initials: P
authors.lastname: Vidal
authors.forename: X
authors.initials: X
authors.lastname: Silva
authors.forename: J L
authors.initials: JL
authors.lastname: López-Pérez
authors.forename: A San
authors.initials: AS
authors.lastname: Feliciano
authors.forename: O
authors.initials: O
authors.lastname: Muñoz
mesh_terms: D000700:Analgesics / Q000494:pharmacology*; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology*; D000972:Antineoplastic Agents, Phytogenic; D000975:Antioxidants / Q000494:pharmacology; D019659:Asteraceae / Q000737:chemistry*; D002351:Carrageenan; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D004487:Edema / Q000139:chemically induced / Q000517:prevention & control; D005260:Female; D006168:Guinea Pigs; D007928:Lethal Dose 50; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D051379:Mice; D010147:Pain Measurement / Q000187:drug effects; D010936:Plant Extracts / Q000494:pharmacology / Q000633:toxicity; D012997:Solvents; D013030:Spain; D014407:Tumor Cells, Cultured; D014969:Xanthine Oxidase / Q000037:antagonists & inhibitors
chemical_list: D000700:Analgesics; D000893:Anti-Inflammatory Agents; D000894:Anti-Inflammatory Agents, Non-Steroidal; D000972:Antineoplastic Agents, Phytogenic; D000975:Antioxidants; D010936:Plant Extracts; D012997:Solvents; D002351:Carrageenan; D014969:Xanthine Oxidase