Objective To investigate the effects of propofol or ketamine on BMP-2 expression in pudmonary arterioles in a rat model of acute lung injury ( ALI) induced by lipopolysaccharide (LPS) .Methods Sixty Wistar rats aged 6-7 weeks weighing 220-260 g were randomly divided into 6 groups with 10 animals in each group: groupⅠcontrol (C); groupⅡLPSs groupⅢpropofol 20 mg·kg-1 + LPS (P1); groupⅣpropofol 50 mg·kg-1 +LPS (P2); groupⅤketamine 20 mg·kg-1 + LPS (K1 ) and groupⅥketamine 50 mg·kg-1 + LPS (K2). ALI was induced...