The preoperative levels of tumor necrosis factor-a ( TNF - a ) and interleukin-@ OL-@ ) were both less than @ ng/L , and the postoperative levels of TNF-a showed no significant change , and IL-@ was increased to @ ( @-@ @ ) ng/L and @ ( @-@ @ ) ng/L in control and Xuebijing groups respectively ( P < @ ) .