Objective To study the effects of genistein(GST) on the expression of estrogen receptor ?(ER?) and the expression of c-fos gene in the aorta of ovariectomized rats.Methods Forty female Wistar rats were randomly divided into four groups:sham-operated(control),ovariectomized(OVX),ovariectomized with 17?-E2 replacement(OVX+E2),ovariectomized with genistein replacement(OVX+GST) group.After 8 weeks' replacement therapy,the rats were sacrificed and the expression of ER? and c-fos in the aorta was studied by immunohistochemistry.Results Ovariectomy significantly decreased ER ? expression and increased c-fos expression in aorta;while replacement therapy,GST and E2,attenuated the effect of ovariectomy manifested by increasing ER expression and decreasing c-fos expression in aorta.Conclusion GST may modulate the expression of ER? in the arteries of ovariectomized rats and play a beneficial effects on cardiovascular system which was associated with decreases in expression of c-fos gene in aorta.

ObjectiveTo explore the effect of psychological intervention on anxiety of patients with motor neuron disease (MND) before stem cell transplantation via lumbar puncture.Methods40 MND patients were randomly divided into the group A and group B with 20 cases in each group. Every patient received anxiety assessment on the day of hospitalization, the day before transplantation as well as the day after transplantation. As to the patients in the group B, psychological intervention was performed before the second time anxiety assessment, while no such intervention to the ones in the group A. Then the assessment was statistically analyzed.ResultsThe patients in each group had anxiety. After psychological intervention, the assessments of the second and the third time of the patients in the group B were better than that of the patients in the group A ( P<0.01).ConclusionPsychological intervention before transplantation can effectively ease the anxiety of patients.

ObjectiveTo study the relationship between fasting plasma glucose (FPG) level and the first cerebral infarction event in the population with diabetes.Methods This was a prospective cohort stndy.8 306 diabetic subjects who determined FPG ≥ 7.0 mmol/L or treated with insulin or hypoglycemic drugs and FPG ＜7.0 mmool/L as the observation population and were followed-up for (48.01 ± 3.14) months.During the course,cerebral infarction events were determined every 6 months.Results( 1 ) By the end of following-up,with the increasing levels of the baseline FPG,the total cholesterol (TC),triglyceride (TG) levels were gradually increased in the diabetic population,the differences were significant [ TC:( 4.93 ± 1.15,5.10 ± 1.20,5.15 ± 1.28,5.33 ± 1.35 ) mmol/L,TG:( 1.70 ± 1.26,1.83 ± 1.29,2.18 ± 1.76,2.41 ± 2.08 ) mmol/L,P＜0.05 ] ; the plasma low density lipoprotein-cholesterol (LDL-C),systolic blood pressure ( SBP),diastolic blood pressure ( DBP),and body mass index (BMI) levels were also increased significantly ( P＜0.05 ).(2) The ineidence of cerebral infarction event in the group of patients with 7.0 mnol/L ≤ FPG ＜ 9.0 mmol/L was the lowest,the differences were significant ( 2.1％,P ＜0.01 ).Compared with the group of 7.0 mmol/L≤ FPG＜9.0 mmol/L,after adjusting for age,sex,BMI,SBP,DBP,TC,TG,low density lipoprotein-cholesterol,high density lipoprotein-cholesterol,smoking,diabetic duration and treatment,the relative risk for cerebral infarction events were 1.85 (95％ CI 1.09-3.15,P＜0.05) and 1.54 (95％CI 1.16-2.05,P ＜ 0.01 ) for those groups with 6.1 mmol/L ≤ FPG ＜ 7.0 mmol/L and FPG ≥ 9.0 mmol/L respectively.ConclusionThe risk of new in cidence of cerebral infarction events seems to be the lowest in the group of diabetic patients whose FPGs are wihin 7.0-9.0 mmol/L range.

Objective To compare the diagnostic value of high frequency ultrasound,mammography and breast blood-oxygen function imaging system in diagnosis of breast masses.Methods The images of 89 breast masses by high frequency ultrasound,mammography and breast blood-oxygen function imaging system were reviewed.The study compared the sensibilities and specificities of the three methods in the masses and analyzed their cause of missed diagnosis.Results The sensitivity of the diagnosis of breast cancer by high frequency ultrasound,mammography and breast blood-oxygen function imaging system were 80.00％,70.00％ and 50.00％,respectively.The specificity of the diagnosis of breast cancer by them were 94.94％,98.73％ and 97.47％,respectively.There were sigmfiacant differences in diagnosis of breast benign lesion among the high frequency ultrasound,mammography and breast blood-oxygen function imaging system.The sensitivity of high frequency ultrasound in detecting fibroadenoma of breast was 98.11％ higher than the other methods.Mammography was insensitive to the benign breast lesions,but its specificity was high.Conclusions High frequency ultrasound,mammography and breast blood-oxygen function imaging system are the highly effective diagnostic tool for breast cancer,but the diagnostic value of mammography and breast blood-oxygen in breast fibroadenoma and in cystic disease of breast aren' t high.Breast blood-oxygen function imaging system can enhance the accuracy of the diagnosis of mammary inflammation.

This paper is to study the feasibility of Chinese female pilot to fly fighterplane considering their physiological and biochemical tolerability to altitude anoxia. The altitude anorexia was simulated on the ground in female pilot and their electrocardiograph, heart rate, blood oxygen saturation, blood pressure, blood uric acid(BUA), blood lactic acid(BLA), creatine kinase(CK) and aspantic aminotransferase(AST) were measured before and after flying, and the results were compared with that in the male pilots. There was no difference in electrocardiograph, heart rate, blood saturation, blood pressure, Cr, CK, BUA and AST in both sexes, but the Hb level was higher in female pilots than that in male ones( P

Objective:To observe cellular,humoral and mucosal immune responses induced by DNA-or protein-based of FimH of UPEC type 1.Methods:After mice were immunized respectively with recombinant plasmid pcDNA3.1/fimH or pcDNA3.1/fimC,and the combinant FimH and FimC protein,the anti-FimH protein IgG of sera and SIgA in bladders were detected by ELISA.The lymphocyte phenotypes of CD3,CD4 and CD8 were analyzed by FCM.Results:The titers of IgG in sera and SIgA in the bladders were all low in the group immunized by recombinant FimH plamid,but the percentage of CD4+T cells in spleen was high,which revealed that recombinant FimH plamid was able to trigger better cellular immune response.The titers of IgG were very high in the group immunized by FimH protein,which suggested that the FimH protein was able to trigger better humoral immune response,but SIgA in the bladders was not detectable.Conclusion:The DNA for FimH can induce humoral,mucosal and cellular immune response.FimH protein can only induce humoral immune response.FimC protein is able to enhance the immunogenicity of FimH protein.

Objective: To understand the exposure to second hand smoking (SHS) and associated factors among middle school students in Beijing, and to provide data support for tobacco control. Methods: The two stage stratified cluster random sampling method were used to select 10 532 students from 370 classes in 48 junior middle schools, 34 senior high schools and 14 vocational high schools in 16 districts of Beijing. The national unified paper questionnaire was used to collect the information. Results: During the past 7 days, 71.5% (95% CI =70.2%-72.7%) of students reported exposure to SHS. The proportion of exposure was highest (60.3%) in outdoor public places, followed by indoor public places (48.9%), at home (34.1%), and public transport (19.1%). About 31.6% of students reported people smoking in the campus in the past 30 days. Risk factors of SHS exposure included one or more parents was smoker( OR =2.62), friends who smoked( OR =2.13), received education on tobacco hazards in school( OR = 0.74 ), and senior high school( OR =0.68-0.73)( P <0.05). Conclusion High exposure to second hand smoking among middle school students in Beijing is common. Implementation of the regulations and the publicity of tobacco hazards and tobacco control in schools should be strengthened. Smoke free household should be advocated, and middle school students, especially junior middle school students, should be protected from the harm of SHS.

Objective To investigate the effect of silenced RBM8A gene on the biological behavior (proliferation, migration, and apoptosis) of human endometrial cancer HEC-1A cells and its possible mechanism. Methods The hairpin shRNA targeted by the RBM8A gene was designed, and the best shRNA silencing fragment was screened. The recombinant lentiviral interference vector carrying the target gene was constructed and used to infect HEC-1A cells. Cells with stable knockdown of RBM8A gene were screened by puromycin as the experimental group (shRBM8A), while the shRNA of nonsense sequence was designed as the control group (shControl). CCK-8 method was used to detect cell proliferation, and flow cytometry was used to detect cell apoptosis. Transwell assay was used to detect cell migration and invasion. Western blot was used to analyze the expression of apoptosis-related proteins and EMT signal transduction pathway related proteins. Results In comparison with the shControl group, after RBM8A knockdown, HEC-1A cell proliferation was reduced, apoptosis was increased, migration and invasion ability were significantly inhibited (P < 0.05), the expression of apoptosis-related proteins cleaved caspase 9 and caspase 3 increased, EMT-related protein E-cadherin expression increased, and Vimentin expression decreased. Conclusion RBM8A gene silencing can inhibit the proliferation, migration, and invasion and promote the apoptosis of endometrial cancer cells. The inhibition of EMT signal transduction pathway may be its mechanism.

Objective: To analyze the second hand smoke exposure and related factors of nonsmoking junior middle school students in Beijing, so as to provide a data support for formulating tobacco control measures. Methods: The multistage cluster random sampling method was used to select junior middle school students in Beijing. The valid data of 4 494, 4 915 and 3 792 nonsmoking middle school students were obtained from three waves of youth tobacco epidemic surveillance in 2013 (September to October), 2019 (August to November) and 2021 (September to December) wave, respectively. The information was collected by the national youth tobacco epidemic surveillance questionnaire. The complex sampling data analysis module of SPSS 21.0 was used to descriptive analysis and multivariate Logistic regression. Results: The proportions of secondhand smoke exposure of nonsmoking junior middle school students in the four types of places in the past 7 days in 2013, 2019 and 2021 in Beijing were 76.4%, 71.4% and 65.7%, respectively, with statistically significant differences (χ2=126.10, P<0.01). The proportions of that found someone smoking in the campus in the three waves of survey were 34.7%, 27.9% and 21.1% (χ2=209.78), the proportion of that found teachers smoking daily were 2.7%, 1.8% and 1.3% (χ2=22.14) (P<0.01), respectively. Multivariate Logistic regression analysis showed both parents smoking (OR=8.47, 95%CI=4.36-16.48), father smoking (OR=3.51, 95%CI=2.75-4.49), and friends smoking (OR=1.88, 95%CI=1.39-2.55) were the influencing factors of secondhand smoke exposure in four types of places of nonsmoking junior middle school students in 2013. Both parents smoking (OR=2.37, 95%CI=1.33-4.22), father smoking (OR=2.80, 95%CI=2.33-3.37), friends smoking (OR=2.24, 95%CI=1.71-2.92), and teaching the tobacco hazards in class (OR=0.77, 95%CI=0.64-0.93) were the influencing factors of secondhand smoke exposure in four types of places for nonsmoking middle school students in 2019. Both parents smoking (OR=3.93, 95%CI=2.29-6.75), fathers smoking (OR=3.30, 95%CI=2.72-3.99), and teaching the tobacco hazards in the class (OR=0.81, 95%CI=0.68-0.97) were the influential factor of secondhand smoke exposure in four types of places of nonsmoking junior middle school students in 2021 (P<0.05). Conclusions The secondhand smoke exposure of nonsmoking middle school students in Beijing has improved, but still is a high level. It is necessary to take corresponding measures to effectively protect nonsmoking junior middle school students from the harm of secondhand smoke.

Objective: To monitor the second-hand smoke (SHS) exposure in residents aged 15 years and over in public venues, indoor workplaces, on public transportation vehicles and at home in Beijing and evaluate the effect of Beijing Tobacco Control Regulation. Methods: Data from 2014 and 2016 Beijing Adult Tobacco Survey were used. The surveys covered 16 districts in Beijing. The study subjects were selected through multi-stage cluster sampling with probability proportional to population size, and data were collected by using electronic questionnaire in face-to-face household interviews. A total of 8 484 and 9 372 valid questionnaires were collected for the surveys in 2014 and 2016, respectively. Statistical packages SPSS 20.0 and R 3.4.4 were used for data analyses. After weighting the samples using complex survey designs, the SHS exposure rates in different places in adults of Beijing were estimated. χ² tests were performed for the comparison. Results: The SHS exposure rates of residents aged 15 years and over in Beijing who visited health care facilities, government buildings, universities, primary and secondary schools and restaurants declined from 12.8%, 19.7%, 24.3%, 32.8% and 65.7% in 2014 to 6.2%, 10.8%, 12.5%, 19.1% and 32.5% in 2016, respectively. The SHS exposure rates in bars/nightclubs were 89.5% in 2014 and 80.3% in 2016. From 2014 to 2016, the SHS exposure rates declined from 35.7% to 20.0% in indoor workplaces and declined from 3.9% to 2.5% on public transportation vehicles. The SHS exposure rates at home were 39.8% in 2014 and 37.6% in 2016, respectively. Conclusions The SHS exposure rates in public places declined obviously in Beijing after the one year implementation of Beijing Tobacco Control Regulation, indicating the effect of the regulation implementation.