作者
Fabio F Perazzo, Gustavo HB Souza, Walter Lopes, Luis GV Cardoso, Jose CT Carvalho, NP Dhammika Nanayakkara, Jairo K Bastos
发表日期
2005/6/3
期刊
Journal of Ethnopharmacology
卷号
99
期号
2
页码范围
215-220
出版商
Elsevier
简介
Anti-inflammatory and analgesic activities as well as the median lethal dose (LD50) of water–ethanolic extract (PHE) of the aerial parts of Pothomorphe umbellata were evaluated in animal models. The ED50 (oral) for the inhibition of carrageenan-induced rat paw edema assay was determined to be 550mg/kg, while the LD50 was higher than 2.0g/kg. At a dose of 550mg/kg, PHE inhibited the inflammatory process by 48.7% (P<0.05) on the third hour of the assay (edema peak) when compared to the untreated control. Indomethacin, the positive control used in this test, inhibited the edema by 58.6% at a dose of 10mg/kg, when compared to the untreated control (P<0.05). All three fractions – hexane, methylene chloride and ethyl acetate – obtained by partition of PHE with respective solvents also showed inhibition of the edema induced by carrageenan over a period of 4h but the methylene chloride fraction showed the …
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