Effects of propofol combined with remifentanil on hepatic ischemia-reperfusion injury in cirrhotic rats / 临床麻醉学杂志

ABSTRACT

Objective To investigate the effects of propofol combined with remifentanil on he-patic ischemia-reperfusion injury in cirrhotic rats.Methods Sixty male SD rats of 260 to 300 grams were randomly divided into five groups(n=12)the sham-operated group(group S);the model con-trol group (group M);propofol group (group P);remifentanil group (group R);propofol combined with remifentanil group (group PR).In group M,P,R,PR,the hepatic arteries and veins of middle and left lobes were occluded for 20 min after 1 w hepatocirrhosis by using four principal factors,and group S went through an open surgery only.In groups P,R,and PR,porpofol (at a rate 20 mg·kg-1 ·h-1 for 1 h)、remifentanil (at a rate 1 μg·kg-1·min-1 for 1 h)and porpofol (at a rate 20 mg·kg-1· h-1 )combined with remifentanil(at a rate 1 μg·kg-1·min-1 for 1 h)was infused iv at 10 min before is-chemia,respectively.In group M,normal saline was infused iv at the same rate.Blood samples were taken at the end of 4 h reperfusion to determine serum AST,ALT activity.Meanwhile liver specimens were collected to assess Bcl-2 and Bax protein expression in liver cell and measuring the apoptosis in-dex(AI)of hepatic cell.The pathological change of liver was also examined.Results Compared with group S,the activity of AST,ALT,the expression of Bcl-2 and Bax and the apoptosis index(AI)of hepatic cell of the other groups all increased significantly(P <0.05);Compared with group M,the expression of Bcl-2 of groups P,R,PR significantly increased,and the activity of AST,ALT,the ex-pression of Bax and the apoptosis index(AI)of hepatic cell significantly decreased(P <0.05 );Com-pared with groups P and R,the expression of Bcl-2 of group PR significantly increased,and the activ-ity of AST,ALT,the expression of Bax and the apoptosis index(AI)of hepatic cell significantly de-creased(P <0.05);Microscopy and scanning electron microscopy showed that,for groups P,R,PR, pathological injury of liver tissue significantly reduced compared with group M.Conclusion Propofol combined with remifentanil can reduce the hepatic ischemia-reperfusion injury in cirrhotic rat by regu-lating Bcl-2 and Bax protein expression and inhibiting apoptosis.The effect is much more enhanced when they are used in combination than individuals.