Anti-inflammatory and analgesic properties of water-ethanolic extract from pothomorphe umbellata (Piperaceae) aerial parts - Perazzo, Fábio F.; Souza, Gustavo H. B.; Lopes, Walter; Cardoso, Luiz G. V.; Carvalho, José C. T.; Nanayakkara, N P Dhammika; Bastos, Jairo Kenupp (Journal of Ethnopharmacology, 2005)