Fig.1.

Experimental protocols. C: control group without any intervention; I: isoflurane preconditioning group which received isoflurane (1.6%, w/v) twice for 10 min followed by 5 min washout; P: propofol preconditioning group which received propofol 37.5 mg/(kg·h) twice for 10 min followed by 5 min washout; I+P: isoflurane plus propofol preconditioning group which received isoflurane (1.6%, w/v) and propofol 37.5 mg/(kg·h) twice for 10 min followed by 5 min washout simultaneously. All rats underwent 60 min of coronary artery occlusion followed by 2 h of reperfusion