The ALT (A), AST (B), MDA (C) and ATP (D) levels in human hepatocytes in six groups. Data were presented as mean ± SD (*, P<0.05; **, P<0.01; ***, P<0.001). The significance of I/R group was compared with control group while the significance of propofol groups were compared with I/R group. ALT, alanine aminotransferase; AST, aspartate aminotransferase; MDA, malondialdehyde; ATP, adenosine triphosphate; I/R, ischemia-reperfusion.