1. A single administration of fish oil inhibits the acute inflammatory response in rats
Laura Lícia Milani DE ARRUDA ; Franciele Queiroz AMES ; Renata GRESPAN ; Ana Paula Maziero GIL ; Maria Angélica Raffaini Covas Pereira SILVA ; Roberto Kenji Nakamura CUMAN ; Ciomar Aparecida BERSANI-AMADO ; Damila Rodrigues DE MORAIS ; Jesuí Vergílio VISENTAINER
Asian Pacific Journal of Tropical Medicine 2017;10(8):765-772
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. Results FOP treatment (30 and 300 mg/kg) significantly reduced paw edema. FOP treatment at 18.75, 37.5, 75.0, 150.0, and 300 mg/kg decreased both the volume of pleural exudate and cellular migration into the pleural cavity and each of these doses presented the same effectiveness. Treatment with FOP (300 mg/kg) reduced NO, TNF-α IL-1β and IL-6 concentrations in the pleural exudate. Conclusions The present data provide evidence that FO has inhibitory effects on the acute inflammatory response when administered in a single dose in rats. This effect might be attributable to a direct inhibitory effect of FO on the production or release of inflammatory mediators that are involved in the pathological processes evaluated herein.
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