Objective: To probe into the mechanisms of electroacupuncture (EA) at Shangjuxu (ST 37) for treatment of the ulcerative colitis (UC). Methods: Forty male Wistar rats were randomly divided into 4 groups: a normal group, a model group, a Shangjuxu group and a non-acupoint group, 10 rats in each group. The UC rat model was made with enema of trinitro-benzenesulfonic acid (TNBSA), and the changes of interleukin-1 beta (IL-1 beta) and interleukin-4 (IL-4) contents after EA at Shangjuxu (ST 37) were observed. Results: EA at Shangjuxu (ST 37) could significantly decrease the IL-1 beta content and inc...