title: Administration of PPARβ/δ agonist reduces copper-induced liver damage in mice: possible implications in clinical practice.
abstract: In this study we investigated if peroxisome proliferator-activated receptor β/δ 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 α and macrophage inflammatory protein 2 mRNA and 8-hydroxy-2'-deoxyguanosine. Mice treated with copper and peroxisome proliferator-activated receptor β/δ agonist GW0742 had significantly less body weight loss, less serum alanine aminotransferase increase, less tumor necrosis factor α, 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 β/δ antagonist GSK0660. In vitro, copper induced reactive oxygen species, which was lower in cells treated with GW0742 or transfected with peroxisome proliferator-activated receptor β/δ 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 β/δ activation reduced copper-induced reactive oxygen species, pro-inflammatory and acute phase reaction cytokines in mice liver. Peroxisome proliferator-activated receptor β/δ agonists could become useful in the management of copper-induced liver damage.
authors.affiliation: Department of Internal Medicine II, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo, Shimane 693-8501, Japan.
authors.forename: Alvaro A
authors.initials: AA
authors.lastname: Sanchez-Siles
authors.forename: Norihisa
authors.initials: N
authors.lastname: Ishimura
authors.forename: Mohammad A K
authors.initials: MA
authors.lastname: Rumi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Tamagawa
authors.forename: Satoko
authors.initials: S
authors.lastname: Ito
authors.forename: Shunji
authors.initials: S
authors.lastname: Ishihara
authors.forename: Toru
authors.initials: T
authors.lastname: Nabika
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Kinoshita