Objective · To explore the correlation of serum S100B protein with depressive episode of bipolar disorder (BD) and its prognosis.Methods· Based on BD criteria of Diagnostic and Statistical Manual of Mental Disorders 4th edition (DSM-Ⅳ),80 patients with depressive episode of BD (case group) and 42 healthy controls (control group) were enrolled.Patients were randomly assigned into quetiapine group who were treated with lithium and quetiapine and modified electroconvulsive therapy (MECT) group who received lithium and MECT.The serum S100B level and Hamilton Rating Scale for Depression (HAMD) were assayed before and after 4-week treatment.Results· The serum S100B levels before treatment in patients with depressive episode of BD were significantly higher than those in healthy controls (P=0.000).The levels of S100B in both drug and MECT groups decreased after 4-week treatment.The HAMD score after treatment significantly decreased than that before treatment (P=0.000).Pearson correlation analysis showed that the change of S 100B level was positively correlated with the change of HAMD score before and after treatment in case group (r=0.33,P=0.013).Conclusion· S100B may be associated with depressive episode of BD and its prognosis.

Objective:To study the changes in the sphincter of Oddi pressure in rabbits after bilateral vagus nerve trunk severance and the therapeutic effect of Qingre Lidan Decoction, to provide a new way for the treatment of sphincter of Oddi dysfunction.Methods:Twenty-four 1.5~2.0 kg New Zealand Large White rabbits of either gender were randomly selected and divided into the control group, the model group, and the treatment group. In the control group, only pyloroplasty was performed; in the model group and the treatment group, pyloroplasty plus bilateral vagus nerve trunk dissection at the level of the diaphragm were performed, and in the treatment group, one month of gavage treatment with Qingre Lidan Decoction was carried out 7 days after the operation. Multi-channel bio-signal acquisition system was used to record the pressure changes of the sphincter of Oddi in rabbits of each group; ELISA was used to detect the changes of inflammatory factors IL-6 and tumor necrosis factor TNF-α in the serum of rabbits.Results:The pressure of the sphincter of Oddi in the model group was significantly higher than those in the control group [low-pressure area: (51.95±0.35) mmHg (1 mmHg=0.133 kPa) vs (21.60±1.13) mmHg ( P<0.05) ; High pressure area: (60.75±0.49) mmHg vs (20.70±0.85) mmHg ( P<0.05)], the pressure of sphincter of Oddi in the treatment group of Qingre Lidan Decoction was lower than that of the model group [low-pressure area: (22.70±1.13) mmHg vs (51.95±0.35) mmHg ( P<0.05); high-pressure area: (32.15±0.49) mmHg vs (60.75±0.49) mmHg ( P<0.05)]. Serum IL-6 and TNF-αwere significantly elevated in the model group compared to the control group; IL-6 and TNF-α levels were decreased in the treatment group compared to the model group, and the differences were statistically significant ( P<0.05). Conclusion:Bilateral vagus nerve trunk severance leads to Oddi sphincter dysfunction, and treatment with Qingre Lidan Decoction could improve Oddi sphincter dysfunction.