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PPARδ
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To determine whether PPARδ agonists are beneficial in experimental liver fibrosis, mice are treated orally with a PPARδ agonist, KD-3010, or with the well-validated PPARδ agonist GW501516. KD-3010, but not GW501516, shows hepatoprotective and antifibrotic effects in liver fibrosis induced by carbon tetrachloride (CCl 4 ) or bile duct ligation (BDL). Liver injury is induced by repeated injections of CCl 4 , and mice are treated daily with vehicle, the widely used PPARδ agonist GW501516, or the PPARδ agonist KD-3010 by oral gavage. Control oil-injected mice do not show any liver damage. Liver injury consisting of hepatocyte death and inflammation is seen in the vehicle- or GW501516-treated group injected with CCl 4 on H&E-stained liver sections but is markedly reduced in the KD3010-treated group.