RESULTS	Compared with before surgery , in the observation group , levels of IL-6 , IL-8 and IL-10 had no significant differences after operation ( P > 0.05 ) , but TNF - level increased y ( p < 0.01 ) , whereas in control group , IL-6 level had no significant difference ( p > 0.05 ) , IL-8 level decreased obviously ( p < 0.05 ) , IL-10 level increased markedly first and then decreased gradually as time passed but its level remained elevated ( p < 0.01 ) , and TNF - level increased first and then decreased , and there was no significant difference 7 d after operation ( p > 0.05 ) .\