title: A drug used in traditional medicine, harpagophytum procumbens: no evidence for NSAID-like effect on whole blood eicosanoid production in human.
abstract: Devil's Claw (Harpagophytum procumbens), an herbal product being marketed in Canada and in Europe as a home remedy for the relief of arthritic disease, was investigated in healthy humans on eicosanoid production during spontaneously blood clotting. Volunteers took H. procumbens (daily 4 capsules of 500 mg powder containing 3% of total glucoiridoids) for a period of 21 days. The following are the results (mean (SEM)): before H. procumbens intake, prostaglandin (PG)E2 (ng/ml serum): 2.1 (0.4) (n = 25), thromboxane (TX)B2: 147 (27) (n = 25), 6-keto-PGF1 alpha: 4.4 (0.7) (n = 13), leukotriene (LT)B4: 3.4 (0.4) (n = 25); after intake: PGE2: 3.2 (0.6), TXB2: 143 (24), 6-keto-PGF1 alpha: 4.2 (0.9), LTB4: 3.8 (0.6). Each subject serving as her own control, no statistically significant differences were observed between before and after H. procumbens intake. These results indicate that Devil's Claw lacks, at least in healthy humans and under the selected conditions, the biochemical effects on arachidonic acid metabolism of antiarthritic drugs of the non-steroidal antiinflammatory type.
authors.affiliation: Laboratoire de Biochimie Médicale, Hôpital Saint-Jacques, Besancon, France.
authors.forename: C
authors.initials: C
authors.lastname: Moussard
authors.forename: D
authors.initials: D
authors.lastname: Alber
authors.forename: M M
authors.initials: MM
authors.lastname: Toubin
authors.forename: N
authors.initials: N
authors.lastname: Thevenon
authors.forename: J C
authors.initials: JC
authors.lastname: Henry
mesh_terms: D000328:Adult; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology; D001094:Arachidonate 5-Lipoxygenase / Q000097:blood; D015777:Eicosanoids / Q000097:blood*; D006801:Humans; D008517:Phytotherapy; D010936:Plant Extracts / Q000494:pharmacology; D011451:Prostaglandin-Endoperoxide Synthases / Q000097:blood
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D015777:Eicosanoids; D010936:Plant Extracts; D001094:Arachidonate 5-Lipoxygenase; D011451:Prostaglandin-Endoperoxide Synthases