[Lipid peroxidation in the rat liver after acute inflammation induced by carrageenan. I. Influence of non-steroidal anti-inflammatory agents].

Oral administration of Indomethacin (3 mg/Kg) and Phenylbutazone (200 mg/Kg) induces an increase of TBA reacting substances (TBArs) by total liver homogenates, while treatment with Ibuprofen(200 mg/Kg, os) does not affect the susceptibility of liver tissue to lipid peroxidation. The former compounds do not influence the pro-oxidant action of CCl4 (1,0 ml/Kg, os) as evaluated "in vitro", whereas Ibuprofen appears to limit the extension of the TBArs production induced by the halomethane. The acute inflammatory state determined by carrageenan injection in the rat hind paw does not interfere with the peroxidative derangement found "in vitro" neither in the presence or in the absence of the all mentioned chemicals. Carbon tetrachloride (1,0 ml/Kg, os) is able in depressing significantly the rat paw oedema provoked by carrageenan, but does not potentiates the anti-inflammatory action of non-steroid agents.