( @ ) Compared with the healthy control group , BTLA expressions in the peripheral blood of AS patients decreased significantly ( P < @ ) ; SOD , CAT , and TAOC values significantly decreased ( P < @ , P < @ ) ; ROS , RNS , and MDA values significantly increased ( P < @ , P < @ ) ; TNF - , IL-@ , ESR , and Hs-CRP values significantly increased ( P < @ ) ; IL-@ and IL-@ values decreased significantly ( P < @ , P < @ ) .