Objective To screen the stable high-producing strains carrying anti-nasopharyngeal carcinoma(NPC)plasmid pFY.Methods Competent E.coli JM109 was prepared by the CaCl2 method and transformed with anti-NPC plasmid pFY.The bacterial colonies obtained from the agar plate were screened for selecting the single colony conforming to the standards as the bac-terial strain and conducting the stability test.The plasmid content was detected by the plasmid extraction reagent kit.Anti-NPC plasmid pFY was transfected into nasopharynegal carcinoma cell line CNE-2.The influence of transfection reagent and the plasmid vector on the cell proliferation was detected by MTT.Results The DNA concentration of plasmids in the culture solution of bacte-rial strain obtained by screening was 30 mg/mL.The proportion of supercoiled DNA was 92%.The identification of electrophoresis and restriction enzymes showed that the plasmids harbored in the 50th progeny of this strain were same as those in the primary. Plasmid pFY had the evident inhibiting effect on the growth of CNE-3 cell line.Conclusion The stable high-producing strains of E. coli carrying anti-NPC plasmid pFY is successfully screened out,which lays the foundation for large-scale preparation of plasmid pFY for clinical utility.

Objective: To study the inhibitive effect of soybean isoflavone on bone loss induced by the decrease of estrogen level in ovariectomized rats. Methods: Ovariectomized Wistar rats (n=48) were divided into six groups and given basic diet, or containing soybean isoflavone or diethylstilbestrol diet. After 16 weeks,estrogen and TRAP (tartrate -resistant acid phosphatase) and BGP (bone Gla-containing protein) in serum were determined. BMD (bone mineral density), bone calcium and phosphorus were measured. By using scanning electron microscope and histochemistry methods to observe the change of microstructure in trabecular bone. Result: Soybean isoflavone can significantly decrease the activity of bone resorption marker TRAP and increase the content of bone formation marker BGP. Soybean isoflavone posses weak estrogen effect and increase femur BMD and Ca, P content. Conclusion:Soybean isoflavone have significantly effect of anti-bone loss in ovariectomized rats.

Objective To study the relationships of health risk factors and health-related presenteeism in medical personnel of a tertiary grade A hospital. Methods A literature review and expert consultation were used to identify 14 health risk factors included in the survey, and the Michigan's Health Risk Appraisal Questionnaire was modified. Medical personnel of a tertiary grade A hospital in Beijing were selected for this cross-sectional study, including doctors, nurses, medical technicians, pharmacists, as well as scientific researchers, and staff members responsible for education, medical affairs, journal editors and other work. Physical measurement and questionnaire survey were conducted to collect demographic data, distribution of health risk factors of medical staff, and productivity information. Results Among 14 health risk factors, pressure or stress had the highest proportion (80.2%), followed by poor quality of sleep (63.7%), high blood lipid (33.8%), low physical activity (30.9%), and unreasonable diet (29.6%). Medical staff of different ages( c 2=16.141, P=0.001) and different occupations( c 2=15.982, P=0.003) had different probability of presenteeism. Medical staff under 30 years of age were most likely to be presenteeism (38.3%). The probability of presenteeism in nurse was the highest(56.2%). Under a high pressure and taking relax medicine seemed more likely to be presenteeism. Conclusion In the 14 kinds of health risk factors, pressure and taking relax medicine in medical staff may be associated with health-related presenteeism.

Objective To study the preventive effect and mechanism of aesculin on intestinal mucosa in rats with experimental ulcerative colitis (UC) . Methods Forty specific-pathogen free SD rats were randomly divided into normal group, model group, salicylazosulfapyridine (SASP, 600 mg/kg) group and aesculin (EH, 100 mg/kg) group, 10 in each group. Rats in model group, SASP group and EH group were given enema with trinitrobenzene sulfonic acid ( TNBS, 100 mg/kg) for the establishment of UC model. The rats in SASP group and EH group were given gastric gavage of SASP and aesculin respectively. At the end of experiment, the serum levels of tumor necrosis factor alpha ( TNF-α) and interleukin 10 ( IL-10) were detected by enzyme-linked immunosorbent assay (ELISA) . The general state, histological features of intestinal mucosa and serum TNF-αand IL-10 levels of rats in each group were compared. Results Aesculin significantly improved the general state and relieved the inflammation of the colonic mucosa of UC rats. The disease activity index ( DAI) scores and tissue damage index (TDI) scores in the model group were significantly higher than those in the normal group ( P<0.01) . The DAI scores and TDI scores in the medication groups were significantly lower than those in the model group (P<0.01) . The serum TNF-αlevel was significantly higher and IL-10 level was significantly lower in the model group than the normal group ( P<0.01) . After treatment, TNF-α was decreased and IL-10 was increased in SASP group and EH group as compared with the model group (P<0.01) . Conclusion Aesculin has certain therapeutic effect on TNBS-induced UC in rats through significantly relieving the symptoms of UC rats. The mechanism may be related with the inhibition of TNF-α secretion and the increase of IL-10 expression, and then improving the disorder of intestinal immune function.

Objective:To explore whether Tuftsin can attenuates symptoms in experimental autoimmune encephalomyelitis mouses.Methods:C57BL/6 mice were immunized with MOG35-55 peptides,and evaluated for clinical neurological score every day .10 mice of the EAE were injected with Tuftsin subcutaneously .The spinal cord were stained by the methods of Haematoxylin Eosinstain , Luxol Fast Blue stain.The mRNA expression of IL-10 and TNF-αfrom brian tissue were detected at the 28 days by RT-PC method.Results:The controlled mice had no symptoms of disease and HE ,LFB were normal.Comparison EAE group with Tuftsin group of HE,LFB,EAE group were server than Tuftsin group.The expression of IL-10 in Tuftsin group was higher than EAE group.The expression of TNF-αin Tuftsin group was lower than EAE group .Conclusion: Tuftsin can attenuates symptoms in experimental autoimmune encephalomyelitis mouses .

Objective To investigate the effect of early systemic nursing intervention applied by ward nurse on constipation among patients with depression. Methods A total of 144 participants were divided into the intervention group (72 cases) andthe control group (72 cases) by random number table. Except for a period of 4 weeks routine nursing and 4 weeks follow-up observation which were applied for control subjects, systemic nursing interventions werealso conducted inintervention patients. The incidence of constipation and constipation symptom scoreswere measured at the ends of the 4th and 8th week of treatment. Results The incidences of constipation and constipation symptom scores of the 4th and 8th weekend in the intervention group were 17.6% (12/68), 6.59 ± 4.08, 23.5% (16/68) and 6.81 ± 3.99 respectively. While in the control group they were 34.9%(22/63), 8.84 ± 4.45, 44.4%(28/63) and 10.52 ± 3.86 respectively. These differences between two groups at the 4th and 8th weekend were all significant (χ2=5.077, t=3.023, P < 0.05 and χ2=6.413, t=5.411, P < 0.05, respectively). Compared with the 4th weekend, in the 8th weekend, constipation rate and scores of constipation symptom were increased in thecontrol group (P < 0.05), but not in theintervention group (t=-1.965, P > 0.05). Conclusions In patients with depression, early systemic nursing intervention can effectively ameliorate the constipation caused by amitriptyline.

Objective: To study the effects of genistein on the proliferation and cell cycle progression of human gastric carcinoma cells. Methods: 3H TdR incorporation test was used to investigate the cell proliferation. Flow cytometry was used to analyze the cell cycle arrest. Immunocytochemistry technique and Western blotting were used to observe the cyclin B and P21 waf1/cip1 protein expression. Results: Genistein inhibited the proliferation of tumor cells significantly, arrested cell cycle progression at G 2/M phase, and enhanced cyclin B and P21 waf1/cip1 protein expression in dose dependent manner. Conclusion:Proliferatory inhibition and G 2/M arrest of human gastric carcinoma cells after treated with genistein may be due to increased stability of cyclin B protein and the expression of P21 waf1/cip1 .

Objective To assess the left ventricular synchronization and global systolic function in patients with implanted dual-chamber (DDD) mode cardiac pacemakers by real-time three-dimensional echocardiography(RT-3DE). Methods Left ventricular systolic synchronization and global function were evaluated in 20 patients with implanted DDD mode cardiac pacemakers and 20 normal people by RT-3DE. The left ventricular end-diastolic volume (LEDV), end-systolic volume ( LESV), stroke volume (SV), left ventricular ejection fraction (LVEF), the mean value of time from the start of electrocardiographic QRS wave to the point of minimal systolic volume (Tmean) of the 17 segments and those standard deviation(T-SD),the maximal difference of time among all 17 segments(Tmax) were obtained by RT-3DE. Results Compared with control group, LESV was significantly increased,SV, LVEF were significantly decreased and T-SD,Tmax were significantly prolonged (P <0.01 ). There were no differences in LEDV and Tmean between the two groups (P>0.05). In patients group,LVEF correlated closely with T-SD (r =-0.674, P<0.05) and Tmax (r = - 0. 634, P < 0. 05). Conclusions There were left ventrieular systolic asychronization and global systolic dysfunction in patients with implanted dual-chamber (DDD) mode cardiac pacemakers,which could be assessed by RT-3DE.

Objective: To improve the economic and technical indicator’s evaluation system and the essential medicines’ centralized bidding procurement practice in China. Methods:By using the literature analysis, comparative analysis and field survey, we collected and analyzed the implementation plans and regulations for the essential medicines’ centralized bidding procurement in 30 provinces. Results: The quality level classification lacks in preci-sion. The economic and technical indicator’s concentration grade is low, the score and content in each indicator un-reasonably fluctuates in different provinces and these indicators are of low efficiency in bond with their structures for the drug quality evaluation. The quality level indicator lacks in the distinction degree and the government’s unreason-able interference exists in competition. Conclusions and suggestions: The quality levels’ indicator type and number should be simplified. The economic and technical indicators’ function, content, score, weight value and the structure should be normatively and scientifically set to improve the efficiency during the drug quality evaluation and the gov-ernment should strive to play their role in the market.

Objective To study the pathogenesis of lower limb motor disorder in vascular parkinsonism(VP)using diffusion tensor image(DTI). Methods A case?control study was performed in a cohort of 16 VP patients and 32 PD patients. Patients were all recruited from the first affiliated hospital of China Medical University from Dec. 2011 to Dec. 2012. The lower limb motor function of those patients was assessed using measurement scales. All patients received magnetic resonance image(MRI)and diffusion tensor image(DTI). Results Patients in VP group showed more seri?ous movement disorders such as freezing of gait(gait ignition failure)than these in PD group,and the movement disorders of their lower limbs prog?ress more rapidly in VP group than the PD group. Movement disorders of their lower limbs in VP group were related to fibers in bilateral frontal lobes (P=0.008). Movement disorder of their lower limbs in PD group were related to fibers in substantia nigra(P=0.030). There are statistically signifi?cant differences in both the FA values of substantia nigra,bilateral frontal lobes and the ADC values of frontal lobes,and the pars compacta and pars reticulata of substantia nigra between these two groups(all P<0.05). Conclusion Movement disorders of bilateral lower limbs are more seriously manifested in VP patients than in PD patients. The onset movement dysfunction of bilateral lower limbs is closely related to fibers in the frontal lobe.