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Evaluation of the analgesic and anti-inflammatory effects of a Brazilian green propolis.
Paulino, Niraldo; Teixeira, Cristiane; Martins, Regiane; Scremin, Amarilis; Dirsch, Verena M; Vollmar, Angelika M; Abreu, Sheila R; de Castro, Solange L; Marcucci, Maria Cristina.
Afiliação
  • Paulino N; Grupo de Pesquisa e Desenvolvimento de Biofármacos BIOFAR, Universidade do Sul de Santa Catarina, Tubarão/SC, Brazil. niraldo@unisul.br
Planta Med ; 72(10): 899-906, 2006 Aug.
Article em En | MEDLINE | ID: mdl-16902858
Phamacological activities of a standard ethanol extract G1 from Brazilian green propolis, typified as BRP1, was evaluated in mouse models of pain and inflammation. Intraperitoneal injection ( I. P.) of G1 inhibited acetic acid-induced abdominal constrictions with an ID (50) = 0.75 +/- 0.05 mg/kg, and in the formalin test the ID (50) values were 0.85 +/- 0.07 mg/kg and 13.88 +/- 1.12 mg/kg, respectively, for the neurogenic and inflammatory phases. The extract was ineffective when assessed in the hot-plate assay. In serotonin-induced paw edema, G1 led to a maximal inhibition (MI) of 51.6 % after 120 min when administered I. P. and of 36 % after 15 min by the oral route ( O. R.). When the inflammatory agent was complete Freund's adjuvant, inhibition of paw edema was also observed after administration of the extract by both routes. In the capsaicin-induced ear edema the ID (50) values were 1.09 +/- 0.08 mg/kg ( I. P.) and 10.00 +/- 0.90 mg/kg ( O. R.). In the acute carrageenan-induced inflammatory reaction induced by carrageenan, G1 reduced the number of neutrophils in the peritoneal cavity with IC (50) values of 0.72 +/- 0.08 mg/kg and 4.17 +/- 0.50 mg/kg, by I. P. or O. R. administration, with a preferential migration of polymorphonuclear neutrophils. IN VITRO, G1 decreased nitric oxide production in LPS-stimulated RAW 264.7 cells (IC (50) = 41.60 microg/mL), and also the luciferase activity in TNF-alpha-stimulated HEK 293 cells transfected with NF-kappaB-luciferase reporter gene driven by the nuclear factor kappaB (NF-kappaB) (IC (50) = 200 microg/mL). This extract, which at low concentrations induces anti-inflammatory and analgesic effects in mouse models, presents a high content of flavonoids, known to inhibit inducible NOS (iNOS) activity. These data taken together led us to reinforce the hypothesis in the literature that the anti-inflammatory effect of propolis may be a due to inhibition of iNOS gene expression, through interference with NF-kappaB sites in the iNOS promoter.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Própole / Analgésicos / Anti-Inflamatórios Tipo de estudo: Prognostic_studies Limite: Animals / Humans / Male País/Região como assunto: America do sul / Brasil Idioma: En Revista: Planta Med Ano de publicação: 2006 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Própole / Analgésicos / Anti-Inflamatórios Tipo de estudo: Prognostic_studies Limite: Animals / Humans / Male País/Região como assunto: America do sul / Brasil Idioma: En Revista: Planta Med Ano de publicação: 2006 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha