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  • Title: Anti-inflammatory and antinociceptive activities of Campomanesia adamantium.
    Author: Ferreira LC, Grabe-Guimarães A, de Paula CA, Michel MC, Guimarães RG, Rezende SA, de Souza Filho JD, Saúde-Guimarães DA.
    Journal: J Ethnopharmacol; 2013 Jan 09; 145(1):100-8. PubMed ID: 23123269.
    Abstract:
    ETHNOPHARMACOLOGICAL RELEVANCE: Campomanesia species are used in folk medicine as anti-inflammatory, anti-rheumatic, anti-diarrheal and hypocholesterolemic. AIM OF THE STUDY: The present study investigated the in vivo anti-inflammatory and antinociceptive properties of ethyl acetate (AE) and aqueous (Aq) extracts from leaves of Campomanesia adamantium and in vitro anti-inflammatory activity of AE and its isolated flavonols, myricitrin and myricetin. MATERIALS AND METHODS: The antinociceptive activity of AE and Aq was evaluated using acetic acid-induced writhing and formalin methods. The in vivo anti-inflammatory effect of AE and Aq was evaluated using carrageenan-induced paw oedema in mice. AE, myricitrin and myricetin were evaluated for their abilities to modulate the production of NO, TNF-α and IL-10 in LPS/IFN-γ stimulated J774.A1 macrophages. RESULTS: It was found that orally administrated AE and Aq (125 and 250 mg/kg) inhibited carrageenan-induced paw oedema in mice. AE (125 and 250 mg/kg) and Aq (125 mg/kg) reduced the time to licking at the second phase of the formalin method in vivo in mice. AE (250 mg/kg) and Aq (125 mg/kg) also reduced the number of writhes. AE, myricitrin and myricetin inhibited NO (320 μg/mL and 6.25-100 μM, respectively) and TNF-α production by macrophages (320 μg/mL for AE, 100 μM for myricitrin and 25-100 μM for myricetin). AE (160 and 320 μg/mL), myricitrin (50 and 100 μM) and myricetin (25-100 μM) increased IL-10 production by macrophages. CONCLUSIONS: The ethyl acetate and aqueous extracts from Campomanesia adamantium showed antinociceptive and anti-inflammatory effects supporting the use of the plant in folk medicine. The results suggest that anti-oedematogenic effect promoted by aqueous extract involves several anti-inflammatory mechanisms of action. The antinociceptive effect shown by aqueous extract can be due to the modulation of release of inflammatory mediators involved in nociception. The anti-inflammatory effects of AE and of its isolated flavonols may be attributed to inhibition of pro-inflammatory cytokines production, TNF-α and NO and to the increased of IL-10 production.
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