Objective To investigate the expression of p38 MAPK gene and p38 MAPK protein,and explore the effect of p38 MAPK in inflammation reaction of severe acute pancreatitis.Methods 48 cases with severe acute pancreatitis were chosen as research group,and another 48 healthy cases as control group.The expression of p38 MAPK gene were investigated by RT-PCR,and the expression of p38 MAPK and P-p38 MAPK protein were investigated by western blot. Results The expression of p38 MAPK mRNA,p38 MAPK protein and P-p38 MAPK protein in research group were higher than that in control group,the differences were all statistically significant(P<0.05 ).Conclusion The expression of p38 MAPK gene and p38 MAPK protein were significantly increased in patients with severe acute pancreatitis,which showed that p38 MAPK played an important role in inflammation reaction.

Crystal power/epoxy resin composite was made with refined crystal power as filling material in different composition. The shearing strength and coefficient of thermal expansion of the crystal powder/epoxy resin composite was studied. The sectional morphology was observed under a scanning electron microscope. The results of the study indicate that the shearing strength of crystal powder/epoxy resin composite is improved while the coefficient of thermal expansion decreases with increase of the amount of crystal powder, and a well-proportioned three-dimensional structure is obtained. The augmentation of shearing strength exhibits no linear relationship to the amount of crystal powder, and there is an optimal amount for crystal powder filling. The coefficient of thermal expansion is decreased with increase of crystal powder filling, and three-dimensional structure optimization exhibits the' similar inflexion.

Background and purpose:Colorectal cancer is one of the most common cancers worldwide as well as a prevalent cause of morbidity and mortality in China.Mustard seed and its components have been reported to possess anticancer properties.The purpose of this study was to investigate the effect of a diet mixed with mustard seeds (MS)on the prevention of colorectal tumorigenesis in Kunming mice induced with azoxymethane.Methods:Sixweek-old female Kunming species mice of were randomly divided into 4 different groups:AOM alone,AOM+5%MS,AOM+10%MS,and the untreated control group.Colorectal tumorigenesis was subcutaneously induced by injecting 10 mg/kg of AOM once a week,for 3 weeks.Different doses of MS were administered in the diet during this study.Thirtytwo weeks after initiation,the mice were put down through cervical dislocation.The colon and recta of the mice were isolated and flushed with nonnal but ice-cold saline.The site,size,and number of colorectal tumors were recorded.The incidence of colorectal tumor in each group was determined.Results:No tumors were found in the control group.Compared to AOM-treated control group(86.7%),the occurrence of colorectal tumors was reduced to 60.0%when administered with a 5%diet of mustard seeds and to 41.7%(P＜0.05)with a diet of 10%mustard seeds.Tumor burden (tumors/mouse)was 2.2±1.2 in the AOM-treated control group whereas it was reduced to 1.1±1.1(P＜0.05)in the 5%diet of mustard seeds and 0.7±0.9(P＜0.05)in the 10%diet of mustard seeds.Conelusion:The results indicate that a diet of mustard seeds is able to inhibit the development of colorectal cancer in mice induced by AOM,suggesting possible future application of MS as a chemopreventive agent for colorectal cancer.

Objective To evaluate the diagnostic value of CT by analyzing CT features of right-sided colon cancer.Methods CT findings of 35 cases with surgically proved right-sided colon cancer were analyzed retrospectively with regard to their pathologic features.Results 34 of 35(97.1%) were diagnosed accurately by CT . Of them , 29 cases (82.9%)were polypoid colon cancer , 6 cases were infiltrative colon cancer, 2 cases with typical “target sign”. 9 cases(25.7%) were found with pericolic infiltration during operation, 7 of 9 (77.8%) were detected by CT scan . Distal ileal involvement of 3 cases ( 8.6% ) were all detected by CT . Lymphadenopathy was showed in 11 (31.4%), 7 of 11(63.6%)were found by CT.Conclusion CT scan plays important role in diagnosis of right-sided colon cancer as well as in finding pericolic infiltration, distal ileal involvement and lymphadenopathy.

Objective To research and analyze about the quality of life of patients after liver or kid-ney transplantation and return to work aiming at understanding the influence of return to work on their quality of life. Methods The general condition questionnaire and the generic quality of life inventory- 74 (GQOLI-74) were used to survey the quality of life of 30 patients who returned to work after liver or kidney transplantation (the experimental group), the results were compared with 30 cases of the same kinds who did not return to work (the control group). The influence of return to work after liver or kidney transplanta-tion on quality of life was analyzed. Results The total score of quality of life,the score of every dimension and factor were higher in the experimental group than those in the control group. Conclusions Return to work contributes to improvement of quality of life for patients after liver or kidney transplantation.

Objective To explore the initial clinical experiences of preoperative endovascular embolization of huge retroperitoneal neurogenic tumor.Methods 5 cases with retroperitoneal neurogenic tumor underwent endovascular embolization before operative resection since Aug.2006~May.2007.Digital subtraction angiography(DSA) was performed during processes in all cases and main tumor's vessels were embolized.Results The processes of endovascular embolization in 5 cases were successfully completed.0~400 ml blood were transfused in these cases.The tumors were excised completely in 4 cases and partly in 1 case.Conclusion Blood loss can be decreased by preoperative endovascular embolization for huge retroperitoneal neurogenic tumors.The extent of embolization should be performed according to individualization.

Objective: To study the basic information of life way disease and the corresponding risk factors of behavior in the community of Peking University Health Science Center, understand the background issue and social support system, and analyze the requirement for community health service so that the critical issue for health can be dealt with and the comprehensive program of prevention and treatment of the disease can be accordingly supplied. Methods: The random face to face questionnaire about life way disease and risk factors in 1 051 residents over 6 years of age in the community of Peking University Health Science Center was conducted according to the typical sampling principle in 1 primary school, 1 middle school, 1 university and its community, and the investigations of health data from the hospital and the police office in the community were also conducted through discussing about life ways risk factors. Accordingly , the data obtained by way of EXCEL were analyzed and processed using SPSS 11.5. Results: Diagnostic data of demography, epidemiology, behavior environment, education and organization were obtained concerning the public health of the Peking University Health Science Center community. Conclusion: The key health issue in the Peking University Health Science Center community is significantly influenced by the bad way of life. And some behavior risk factors, such as fatness, lack of outdoor exercise in the community members. Thus, the major necessary health service of Peking University Health Science Center residents is to carry out a comprehensive management program of life way disease for the whole people.

Regarding radioactive iodine-refractory failure or advanced differentiated thyroid cancer,multiple multikinase inhibitors including sorafenib and lenvatinib,which target platelet derived growth factor receptor,vascular endothelial growth factor pathway,and rearranged during transfection (RET) pathway were proved to have obvious antitumor activity.Moreover,selective BRAF inhibitor,promoting drug uptake of radioactive iodine also showed a certain therapeutic effect.These molecular targets which are relevant with differentiated thyroid cancer occurrence,development,invasion and metastasis have become of its moment,and,selective inhibitors and re-differentiation agents were shown to be promising.In the future,individual genetic testing would provide more specific information in directing individualized molecular-targeted therapy.

Objective To study the effect of gambogic acid on apoptosis and autophagy in human hepatoma cells HepG2, and to detect its possible mechanism. Methods After exposure of HepG2 cells to gambogic acid at different concentration for 24 h, cell proliferation rates was determined by MTT assay, apoptosis rate was detected by the flow cytometry (FCM), formation of autophagic vacuoles was observed by the monodansyl cadaverine (MDC) fluorescence staining, expression level of apoptosis-related proteins Bax, bcl-2 and autophagy related protein Beclin 1 was detected by Western blot. Results HepG2 cell growth was inhibited by the gambogic acid dose dependence. After exposure to gambogic acid at 0, 2.0, 4.0 and 8.0 μmol/L for 24 h, cell apoptosis rate was significantly increased to 5.31 %, 29.18 %, 31.50 % and 46.09 %(P <0.05), MDC average fluorescence intensity was also significantly increased to 6.3 ±1.1, 82.6 ±4.5, 132.9±15.7 and 157.7±9.0 (P<0.01). Western blot showed that gambogic acid could promote the expression of apoptosis protein Bax (0.17 ±0.02, 0.75 ±0.06, 0.78 ±0.05, 0.89 ±0.10, P <0.05), and decrease the expression of anti-apoptosis protein bcl-2 (1.18 ±0.04, 0.90 ±0.06, 0.64 ±0.08, 0.57 ±0.05, P <0.05), meanwhile, it could also increase the expression of autophagy related protein Beclin (0.67±0.03, 0.92±0.04, 0.95±0.07, 1.04±0.06, P<0.05). Conclusion Gambogic acid can inhibit the growth of human hepatoma HepG2 cells by inducing apoptosis and autophagic cell death.

Objective:To explore the abortion effect and mechanism induced by Chinese herbal medicine rhubarb extract.Methods:The pregnant mice at day 3 of gestation were Drenched by Aqueous extract of rhubarb at different doses (7,5,2.5 g/kg)once per day for five days,and mices in control group were oral administration of same volume of saline.All mices at 12 day of gestation were sacrificed.estradiol and progesterone levels in serum were detected by Radioimmunoassay;Content of IFN-γ, IL-2 and TNF-αin uterine lysates were measured by ELISA, macrophages in endometrium were determined by immunohistochemical method, mast cells in endometrium were tested by Toluidine blue staining, respectively.Results: showed as follows:With increasing dose of rhubarb extract,abortion rate and resorption rate were gradually increased and was 100%abortion in 7g/kg treatment groups.Estrogen and progesterone content showed a downward trend,IFN-γ,IL-2 and TNF-αin uterine lysates and the numbers of macrophages and mast cells were significantly higher in mices Drenched by Aqueous extract of rhubarb than in the control.Conclusion: These results show that rhubarb extract not only interfere stability of pregnancy state in pregnant mices because of its diarrhea,but also can directly affect endometrial environment in early embryonic mice,Resulting in abortion.