RÉSUMÉ
Avaliou-se a atividade antiinflamatória do extrato etanólico de própolis - EEP, . sobre o edema desencadeado por carragenina, dextrana e histamina. O EEP apresentou dose eficaz (DE50) de 650 mg/kg (v.o), inibindo significativamente o processo inflamatório desencadeado pela carragenina, mas não inibiu o produzido por dextrana. O EEP antagonizou ainda o efeito edematogênico produzido por histamina. Nas úlceras produzidas por estresse, o EPP inibiu de forma significativa a geração dos diversos tipos classificados. Em todos os parâmetros analisados no estudo da toxicidade em fase de tratamento subcrônico , (hematológicos, bioquímicos e histopatológicos), o grupo tratado com o EEP não apresentou diferença significativa em relação ao grupo controle. Desta forma, sugere-se que na dose de 650 mg/kg (dose eficaz) não existe a presença de efeitos tóxicos que possam comprometer a utilização deste extrato.
The antlinflammatory activity of Ethanolic Extract of Propolis - EEP was evaluated on edema induced by carrageenan, dextran and hystamine. The inflammatory process induced by carrageenan was significantly reduced by the treatment with EEP (650 mg/kg, p.o), while it did not interfere in the response induced by dextran. The EEP antagonized the edematous effect produced by hystamine. The EEP promoted a significant inhibition in the generation of the ulcers induced by stress (p < 0.05). The hematological, biochemical and histopathological parameters presented no differences between treated and control groups. Therefore it can be concluded that the effective dose of 650 mg/kg of the EEP has no toxic effect which may compromise the use of this extract.
RÉSUMÉ
The vegetal species Pterodon emarginatus Vog. (Leguminosae/Papilonaceae), popularly known in Brazil as 'sucupira branca', is widely used by domestic medicine as an anti-inflammatory. From these observations, the hexanic crude extract (HCE) of the fruits was obtained and submitted for assessment of its anti-inflammatory activity. For this purpose, the following tests were used: (1) Determination of ED50 and LD50; (2) Paw edema induced by carrageenin, dextran, histamine and nystatin; (3) Peritonitis caused by carrageenin and (4) Granuloma test. The ED50 (oral) in the edema induced by carrageenin was 500 mg/kg, and LD50 (oral) was 4.02 g/kg. In the edema caused by nystatin, there was a significant inhibition by 45% (P < 0.05 student's t-test) at the 6th hour following the treatment. In the granuloma test performed in animals treated with HCE, there was an inhibition of the granulomatous tissue formation by 22%. The migration of neutrophils towards the peritoneal cavity was inhibited in HCE treated animals by 43% (P < 0.05). However, in the edema caused by dextran and histamine, there was no significant response in HCE treated animals.
