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Background The gradually increasing changes in a human hyperlipidemic diet along with chronic stress might play an important role in the increased numbers of fatty liver.This study investigated the effects of llex asprella root decoction on related genes of lipid metabolism in chronic stress in hyperlipidemic fatty liver in rats.Methods Forty-eight male Wistar rats were randomly divided into four groups:normal control group,model control group,simvastatin group,and Ilex asprella root group.To establish chronic stress and hyperlipidemic fatty liver models in rats,the levels of serum lipids,glucose,liver index,insulin (INS),insulin resistant (IR) index,adiponectin,superoxide dismutase (SOD),glutathione peroxidase (GSH-pX),glutathione (GSH),liver X receptor (LXR),and sterol responsive element binding protein (SREBP)-1c in rats were measured.Results When compared to the normal control group,the levels of serum lipids,glucose,liver index,INS,IR index,and GSH in the model control group significantly increased (P＜0.01).The protein levels of LXRα and SREBP-1c increased (P ＜0.05),and the serum adiponectin and the SOD and GSH-pX decreased significantly (P ＜0.01).When compared to the model control group,the levels of serum lipids,glucose,liver index,INS,IR index,SOD,and GSH-pX in the simvastatin group and Ilex asprella root group increased in varying degrees (P ＜0.01 or 0.05); the serum adiponectin and GSH decreased (P ＜0.05),while the protein levels of LXRα and SREBP-1c decreased in varying degrees (P ＜0.01 or 0.05).When compared to the simvastatin group,the IR index and protein levels of LXRα in the Ilex asprella root group decreased (P ＜0.05),and the serum adiponectin and SOD increased (P ＜0.05).Conclusion The Ilex asprella root decoction has some protective effects on regulating the related genes of lipid metabolism caused by chronic stress and hyperlipidemic fatty liver in rats.Chin Med J 2012; 125( 19):3539-3542