The rat was deprived of sleep for 8 h by using footplate electrical stimulation method,then it was killed by decapitation after 4 h since intraperitoneal injection of ursolic acid;the brain tissue homogenates were taken from its cerebral cortex,hippocampus and hypothalamus for preparing supernatants and then the contents of IL-1b,TNF-a and NO in them were determined.The results indicated that after the sleep-deprived rat was given with ursolic acid,the NO contents were increased significantly and the conten...