In the present studies we examined the effects of an intra-peritoneal injection of morphine (7 mg/kg) on carrageenan-induced paw oedema in mice.
We report here that when compared with PPAR-alpha wild-type mice , PPAR-alpha knockout mice (PPAR-alphaKO) mice experienced a higher rate of the extent and severity when subjected to carrageenan injection in the paw edema model or to carrageenan administration in the pleurisy model.
An increase of immunoreactivity to poly-ADP-ribose , TNF-alpha , and IL-1 beta , as well as a significant loss of body weight and mortality was observed in the lung of bleomycin-treated PPAR-alpha WT mice.