Effects of ethanolic extract of leaves of Lafoensia pacari A. St.-Hil., Lythraceae (pacari), in pain and inflammation models

Resumo

Lafoensia pacari A. St.-Hil., Lythraceae, popularly known as pacari, is a Cerrado’s native specimen; the stem bark extract is used in folk for pain and inflammation, also showing sedating activity. This study aimed to evaluate the analgesic and anti inflammatory activities of ethanol extract from pacari leaves (EEPL). These activities were verified in mice. The previous treatment with EEPL 1.0 g/kg showed antinociceptive activity both in the acetic acid-induced writing test and in the formalin-induced model of pain, and in neurogenic and inflammatory phases as well. In the croton oil-induced ear edema, the pre-treatments with EEPL reduced the edema in a dose-dependent manner. Also in the carrageenan-induced peritonitis, the two major doses tested (2.0 and 1.5 g/kg p.o.) were able to reduce the leukocyte migration in a dose-dependent manner. The Central Nervous System tests showed that the extract does not elicit uncoordinated motricity, hypnosis or sedating effects. The results showed that EEPL maintains the analgesic and anti-inflammatory effects of the stem bark of pacari, being the collect of leaves more favorable to the preservation of this Cerrado’s native specimen.

Descrição

Palavras-chave

Dor, Lythraceae, Extrato das folhas, Lafoensia pacari, Inflamação, Pain, Inflammation, Leaf extract, Lafoensia pacari, Lythraceae

Citação

GUIMARÃES, Heloisa Alves et al. Effects of ethanolic extract of leaves of Lafoensia pacari A. St.-Hil., Lythraceae (pacari), in pain and inflammation models. Revista Brasileira de Farmacognosia, Curitiba, v. 20, n. 3, p. 328-333, June/July 2010.