Administration of PPAR?/? agonist reduces copper-induced liver damage in mice: possible implications in clinical practice.

ABSTRACT: In this study we investigated if peroxisome proliferator-activated receptor ?/? activation protects from copper-induced acute liver damage. Mice treated with copper had significant body weight loss, serum alanine aminotransferase increase, modest changes in liver histology, increase of tumor necrosis factor ? and macrophage inflammatory protein 2 mRNA and 8-hydroxy-2'-deoxyguanosine. Mice treated with copper and peroxisome proliferator-activated receptor ?/? agonist GW0742 had significantly less body weight loss, less serum alanine aminotransferase increase, less tumor necrosis factor ?, macrophage inflammatory protein-2 and 8-hydroxy-2'-deoxyguanosine upregulation than copper treated mice. The opposite effect was observed in mice treated with copper and peroxisome proliferator-activated receptor ?/? antagonist GSK0660. In vitro, copper induced reactive oxygen species, which was lower in cells treated with GW0742 or transfected with peroxisome proliferator-activated receptor ?/? expression vector; together, transfection and GW0742 had an additive reactive oxygen species-reducing effect. Copper also upregulated Fas ligand and Caspase 3/7 activity, effects that were significantly lower in cells also treated with GW0742. In conclusion, peroxisome proliferator-activated receptor ?/? activation reduced copper-induced reactive oxygen species, pro-inflammatory and acute phase reaction cytokines in mice liver. Peroxisome proliferator-activated receptor ?/? agonists could become useful in the management of copper-induced liver damage.

SUBMITTER: Sanchez-Siles AA 

PROVIDER: S-EPMC3128365 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature