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Anti-inflammatory and antinociceptive effects of Arrabidaea brachypoda (DC.) Bureau roots

da Rocha, Cláudia Q., Vilela, Fabiana C., Cavalcante, Gustavo P., Santa-Cecília, Flávia V., Santos-e-Silva, Lucas, dos Santos, Marcelo H., Giusti-Paiva, Alexandre
Journal of ethnopharmacology 2011 v.133 no.2 pp. 396-401
traditional medicine, anti-inflammatory activity, pain, peritonitis, carrageenan, inflammation, high performance liquid chromatography, leukocytes, mice, models, phenolic compounds, edema, renal calculi, rats, roots, quercetin, analgesic effect
AIM OF THE STUDY: Arrabidaea brachypoda (DC.) Bureau has been used to relieve general pain, painful joints and kidney stones in Brazilian folk medicine. Nevertheless, scientific information regarding this species is scarce; there are no reports related to its possible analgesic and anti-inflammatory effects. This study was aimed at evaluating the traditional use of Arrabidaea brachypoda root using in vivo inflammatory and nociceptive models. MATERIALS AND METHODS: Carrageenan-induced paw edema, peritonitis and fibrovascular tissue growth induced by s.c. cotton pellet implantation were used to investigate the anti-inflammatory activity of Arrabidaea brachypoda roots ethanolic extract (AbEE) in rats. Formalin and acetic acid-induced writhing tests were used to investigate the antinociceptive activity in mice. High-performance liquid chromatography (HPLC) was used to determine the fingerprint chromatogram of AbEE. RESULTS: The AbEE at test doses of 30–300mg/kg p.o. demonstrated anti-inflammatory effects. AbEE reduced paw edema induced by carrageenan, inhibited leukocyte recruitment into the peritoneal cavity and, in the model of chronic inflammation using the cotton pellet-induced fibrovascular tissue growth in rats, significantly inhibited the formation of granulomatous tissue. The extracts at test doses of 30–300mg/kg p.o. clearly demonstrated antinociceptive activity, except during the first phase of the formalin test. The presence of quercetin and phenolic compounds in the extract Arrabidaea brachypoda was confirmed using HPLC. CONCLUSION: Arrabidaea brachypoda ethanol extract markedly demonstrated anti-inflammatory action in rats and antinociceptive activity in mice, which supports the previous claims of traditional use.