A single administration of fish oil inhibits the acute inflammatory response in rats.

Objective: To investigate the antiinflammatory effects of a single administration of fish oil (FO) on the acute inflammatory response.

Methods: The paw edema and pleurisy models were used to evaluate the effects of FO dissolved in olive oil (FOP) orally administered in a single dose in rats. Nitric oxide (NO) concentrations in the pleural exudate were performed according to the Griess method and the cytokine concentrations were determined by Luminex bead-based multiplex assay.

Inhibitory Effect of Helicteres gardneriana Ethanol Extract on Acute Inflammation.

The anti-inflammatory effect of an ethanol extract of Helicteres gardneriana (Nees) Castiglioni was assayed in experimental models of pleurisy and microcirculation in situ. Treatment of animals with 500 mg/kg body weight reduced the exudate volume (35% reduction) induced by intrapleural injection of carrageenan and the migration of polymorphonuclear cells into the inflamed pleural cavity of rats (40%). Additionally, rolling and adhesion of leukocytes and the number of leukocytes that migrated toward the perivascular space in response to the carrageenan injection were decreased by the extract (500 mg/kg).