Abstract
Ginsenosides, bioactive compounds of Panax Ginseng C.A. Meyer, are divided into protopanaxadiol (PD) and protopanaxtriol (PT). The aim of this study was to evaluate the protective effects of different PD and PT combination ratios on liver inflammation and apoptosis in hyperlipidemic apo E KO mice. R1 (PD/PT=1, high Rg(1) and Rb(1)) and R2 (PD/PT=2, high Re and Rd) extracts were intraperitoneally injected by 100mg/kg/day at the 8th week. R1 and R2 improved atherogenic indices by increasing HDL and lowering total cholesterol (TC) and triacylglyceride (TG) selectively. R1 decreased lipid peroxides (LPO) level in plasma and liver tissue of hyperlipidemic mice, and R2 lowered plasma malondialdehyde(MDA) level. R1 and R2 not only regulated the expression of cyclooxygenase (COX)-2, IκB-α, phopho-ERK 1/2, and phopho-SAPK/JNK levels but also were significantly effective in blocking apoptotic signals, such as caspase-8, -9, as well as the cleavage of PARP in liver. Different combinational treatment of PD and PT extracts might ameliorate the liver inflammation and apoptosis in hyperlipidemic apo E KO mice, which is atherosclerotic animal model.
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