But there was no statistical difference in serum levels of IL-12 or TNF-alpha in the Tiapride group between before treatment ( 123.00 + / - 24.26 and 205.10 + / - 26.16 ) and after treatment ( 117.75 + / - 16.79 and 199.76 + / - 33.21 ; P > 0.05 ) .