ObjectiveTo explore the mechanism of cucurbitacin B （CuB） in inhibiting cell proliferation and glycolysis. MethodCell counting kit-8 （CCK-8） was applied to investigate the effect of different concentrations of CuB （0， 40， 80， 120， 160， 200， 400， and 800 nmol·L^-1） on the proliferation of HuCCT1 cells. The effect of different concentrations of CuB （50， 100， and 200 nmol·L^-1） on the colony formation ability of HuCCT1 cells was detected by plate cloning assay. The effect of different concentrations of CuB （50， 100， 200 nmol·L^-1） on the HuCCT1 cell cycle was analyzed by flow cytometry. Visible spectrophotometry was employed to detect the activity of key glycolytic enzymes hexokinase （HK） and pyruvate kinase （PK）） and changes in glucose consumption， lactate production， and adenosine triphosphate （ATP） production in HuCCT1 cells after administration of different concentrations of CuB （50， 100， 200 nmol·L^-1）. Western blotting was used to assay the effect of CuB on the expression of cell cycle-related proteins， proliferation-related proteins， key glycolytic proteins， and Akt/mammalian target of rapamycin （mTOR） pathway-related proteins. ResultAs compared with the blank group， CuB at dose of 160-800 nmol·L^-1 after 24 h administration and CuB at dose of 80-800 nmol·L^-1 after 48 h administration inhibited the proliferation of HuCCT1 cells in a time- and dose-dependent manner （P<0.05， P<0.01）， and the median inhibitory concentration was 200 nmol·L^-1 48 h after administration. CuB can restrain the colony formation ability of HuCCT1 cells in a dose-dependent manner （P<0.01）， and block HuCCT1 cell cycle in G₂ phase （P<0.05， P<0.01）. CuB （100 and 200 nmol·L^-1） can suppress the activities of HK and PK and reduce cell glucose consumption and production of lactate and ATP （P<0.05， P<0.01）. Western blot results showed that CuB （100 and 200 nmol·L^-1） can inhibit the protein levels of cycle-related protein Cyclin B₁， proliferating cell nuclear antigen （PCNA）， HK1， HK2， PKM1， PKM2， phosphorylated Akt （p-Akt）， phosphorylated mTOR （p-mTOR）， and phosphorylated ribosomal protein S6 （p-RPS6） （P<0.05， P<0.01）. ConclusionCuB can inhibit aerobic glycolysis in HuCCT1 cells via the Akt/mTOR pathway， thereby affecting cell proliferation.

Objective To develop a simple,multi-dimensional self-screening questionnaire for som-atoform symptoms(SQSS). Methods Based on theoretical framework,the study developed the items of the questionnaire. The first draft of the questionnaire was screened through the expert evaluation method. Four groups of 359 subjects were selected to test the reliability and validity of questionnaire. Results The explor-atory factor analysis showed that the four factors(somatic symptoms,negative perception,illness behavior and social function) were extracted and the interpretable percentage of variance was 61. 165%. The correlation between the subscales and the total scales was 0. 740-0. 887,and the correlation coefficient between the sub-scales was 0. 503-0. 625. The Crobanch's α coefficient of the questionnaire was 0. 926,and the Spearman-Brown score of the questionnaire was 0. 868. The retest correlation coefficient of the total scale was 0. 876. A cutoff of 23 points in the SQSS was identified for screening somatoform disorders, and the sensitivity was 0. 880 and the specificity was 0. 606. Conclusion SQSS has good reliability and validity,and can be prelim-inarily used as a self-screening tool for patients with somatoform symptoms or disorders in clinical settings.

Objective To explore the detection rate and clinical characteristics of multiple somatic symptoms among adult outpatients in cardiology,neurology and GI clinics.Methods The general demographic data and disease-related information of 1 497 patients in Beijing Chaoyang Hospital,Beijing Anzhen Hospital and Beijing Tongren Hospital were collected through continuous inquiry and screening.Physical symptoms and depressive symptoms were assessed by Patient Health Questionnaire-15 (PHQ-15) and Patient Health Questionnaire-9 (PHQ-9).The patients were divided into multiple somatic symptoms group (SOM+group,PHQ-15≥10) and non-multiple somatic symptoms group (SOM-group,PHQ-15＜10).The detection rate of multiple somatic symptoms was calculated.Partial correlation analysis was used to analyze the correlation of PHQ-15 with the demographic,course of disease,cumulative number of visits,and the total score of PHQ-9.Results The overall detection rate of multiple somatic symptoms was 32.67％ (489/1 497)in the three hospitals,and the highest was found in the department of digestive medicine (37.74％,191/506).There were significant differences in gender (x2=36.85,P＜0.01),working status (x2=19.78,P＜0.01),visiting department (x2=9.64,P＜0.01),first visiting/repeated visiting (x2=6.67,P＜0.01),and the total score of PHQ-9 (x2=231.52,P＜0.01).The detection rate of female patients was higher than that of male patients.The detection rates of retired patients and patients who had no daily stable work were higher than patients who had daily stable work.The detection rate of re-visited patients was higher than that of first-visited patients.The illness duration (r=0.07,P＜0.05,Bonferroni correction) and the total score of PHQ-9 (r=0.66,P＜0.05,Bonferroni correction) were positively correlated with the severity of somatic symptoms measured by PHQ-15.Conclusions The detection rate of multiple somatic symptoms was high in general hospitals,especially highest in digestive outpatient clinics,and significantly higher in female,retired,unemployed,re-visited and patients who have depressive symptoms.Depressive symptoms and the illness duration were positively correlated with the severity of somatic symptoms.

Objective To explore the detection rate and clinical characteristics of multiple somatic symptoms among adult outpatients in cardiology,neurology and GI clinics.Methods The general demographic data and disease-related information of 1 497 patients in Beijing Chaoyang Hospital,Beijing Anzhen Hospital and Beijing Tongren Hospital were collected through continuous inquiry and screening.Physical symptoms and depressive symptoms were assessed by Patient Health Questionnaire-15 (PHQ-15) and Patient Health Questionnaire-9 (PHQ-9).The patients were divided into multiple somatic symptoms group (SOM+group,PHQ-15≥10) and non-multiple somatic symptoms group (SOM-group,PHQ-15＜10).The detection rate of multiple somatic symptoms was calculated.Partial correlation analysis was used to analyze the correlation of PHQ-15 with the demographic,course of disease,cumulative number of visits,and the total score of PHQ-9.Results The overall detection rate of multiple somatic symptoms was 32.67％ (489/1 497)in the three hospitals,and the highest was found in the department of digestive medicine (37.74％,191/506).There were significant differences in gender (x2=36.85,P＜0.01),working status (x2=19.78,P＜0.01),visiting department (x2=9.64,P＜0.01),first visiting/repeated visiting (x2=6.67,P＜0.01),and the total score of PHQ-9 (x2=231.52,P＜0.01).The detection rate of female patients was higher than that of male patients.The detection rates of retired patients and patients who had no daily stable work were higher than patients who had daily stable work.The detection rate of re-visited patients was higher than that of first-visited patients.The illness duration (r=0.07,P＜0.05,Bonferroni correction) and the total score of PHQ-9 (r=0.66,P＜0.05,Bonferroni correction) were positively correlated with the severity of somatic symptoms measured by PHQ-15.Conclusions The detection rate of multiple somatic symptoms was high in general hospitals,especially highest in digestive outpatient clinics,and significantly higher in female,retired,unemployed,re-visited and patients who have depressive symptoms.Depressive symptoms and the illness duration were positively correlated with the severity of somatic symptoms.