Objective:To investigate the status of professional cognition of the vocational medical students and educate the professional values for the vocational medical students. Method:A questionnaire survey was conducted among 360 vocational medical students. SPSS 16. 0 was used to analyze the data in the present study. Result:Vo-cational medical students have career pursuit and understand profession basic requirements. The students have pragmatic attitude, however, they have unobvious continued willingness to invest and haven 't form clear integral professional cognition. Conclusion: Professional values of the vocational medical students can be cultivate by strengthening ideal and belief, humanities accomplishment, medical professionalism, professional ideological edu-cation, internship and social practice.

Objective　To obtain the normal ranges of different parameters in static posturography.Methods　Different parameters' values of 117 normal persons (10～19 years old) were detected by static posturography while they were in opening and closing eyes situations. Results　The mean values of different parameters in opening eyes situation are significantly lower that in closing eyes situation(P＜0.01). The values from the male and the female demonstrate no significant difference, values from 10～19 years old group and 70～79 years old group are significantly higher than from 20～69 years old group(P＜0.01). Conclusion　The static posturography is a perfect measure to analyze and evaluate the balance ability of human body in exact quantification, and could be one of the routine clinic tests, supplying quantificational, intellective and facile method for diagnosis and evaluation of dizziness and balance ability.

Objective Based on the previous research that the ethanolic extract from traditional Chinese medicine fructus forsythiae (Lianqiao) can obviously inhibit cancer cells in vitro, the article aimed to investigate the anti-proliferation effects of dammar-24-ene-3β-acetate-20S-ol (DM) extracted from fructus forsythiae on gastric cancer cells and its mechanism.Methods MTT assay was used to assess the anti-proliferation effects of DM on gastric cancer cells including SGC-7901, BGC-823, and MKN-45 in vitro.There were MKN-45 control group and its low dose and high dose groups, BGC-823 control group and its low dose and high dose groups, SGC-7901 control group and its low dose and high dose groups in the experiment.Flow cytometry was used to analyze the cell apoptosis rate.Cellquest software was used to analyze the results and record the ratio of cells at different cycles.DCFH-DA probe was applied to detect the ROS levels of blank control group, docetaxol group and DM group.The reaction system of microtubule assembly test was set with 10?mol/L docetaxol, 50 or 100 μmol/L DM final density and no medicine in blank control group.The readings of UV spectrophotometer were recorded.Microtubule assembly assay and microtubule immunofluorescence staining were applied to investigate the effects of DM on microtubule system.Results The inhibition ratio of 50 μg/L DM on the proliferation three gastric cell lines were all above 80%, with IC50s of MKN-45 11.72±1.35 μg/mL, BGC-823 17.19±0.82 μg/mL, SGC-7901 7.55±0.79 μg/mL.8 days′ low density culturing at 48 hours after 2 μg/mL DM treatment, compared with control group, the number of cell clones significantly reduced without much change in clone size, while 48 hours after 10 μg/mL DM treatment, besides a few clones of BGC-823, there were just several megascopic clones of SGC-7901 and MKN-45.In comparison with apoptotic cell ratio in MKN-45 control group[(21.1±2.5)%], its low dose group and high dose group resulted in significant rise of apoptotic cell ratio[(25.1±1.3)% and (55.2±2.3)%] (P<0.01).Compared with apoptotic cell ratio in BGC-823 control group[(13.2±2.5)%], its low dose group and high dose group resulted in significant rise of apoptotic cell ratio[(18.2±2.1)% and (41.8±2.1)%] (P<0.01).Compared with apoptotic cell ratio in SGC-7901 control group[(10.5±1.8)%], significant rise was observed in its high dose group[(41.8±2.1)%] (P<0.05) while no statistical significance was found in its low dose group[(12.3±1.6)%] (P>0.05).In comparison with MKN-45 control group, the ratio of cells at S phase decreased in its low dose group[(14.5±2.7)% vs (12.3±3.3)%,P>0.05].In comparison with BGC-823 control group, the ratio of cells at S phase increased in its low dose group[(12.2±5.4)% vs (20.2±2.1)%,P<0.05].In comparison with SGC-7901 control group, the ratio of cells at S phase increased in its low dose group[(21.5±3.8)% vs (31.3±2.6)%,P<0.05].From the detection of intracellular active oxygen after DM treatment, dose-dependent ROS level increased in all three cell lines 48 hours after 10μg/mL and 50μg/mL DM treatment.From the results of microtubule immunofluorescence staining, 48 hours after the treatment of IC50 docetaxol and 10μg/mL DM, the fluorescence signals were in local concentration and disorder.Conclusion Dammar-24-ene-3β-acetate-20S-ol demonstrated anti-proliferation effects due to the apoptosis induced by cell cycle arrest at S phase.

Objective To study the sensitivity and reliability of rat skin anaphylactoid test method, detect and evaluate the anaphylactoid reaction of traditional Chinese medecine injection. Methods The condition of rat skin anaphylactoid test was optimized by studying the influencing factors of sensitivity and reliability of test with C48/80 as a tool drug, Tween80, endotoxin, China cobra toxin, trichosanthin injection, Tanreqing injection and Xuesaitong injection were investigated. Results The best conditions of rat skin anaphylactoid test was as follows:intrademal inject the drug with insulin syringe, 50-100μL per point, immediately inject 0.5%Evans blue dye 1 mL though caudal vein, 15 min later, kill the rat by carotid artery bleeding, clip dorsal skin to do the test. With this method, Tween80, endotoxin, China cobra toxin and trichosanthin injection all can induce blue stain in rat skin. Tanreqing injection showed no blue stain at the clinical dose. Xuesaitong injection although can induce blue stain in rat skin at the clinical dose, but the results cannot exclude the interference of its pharmacological function. Conclusion The method is simple with short test cycle, less dose of test drug, high detection sensitivity and good reproducibility, but some drug can show false positive result due to its own property.

Objective To explore the change of CD4+CD25+Foxp3+ regulatory T (Treg) cells during aging and the relation with lung tumor. Methods The Lewis lung cancer model was set up in C57BL/6 female mice, and the 36 mice were divided into young health group, middle-aged health group, elderly health group, young tumor group, middle-aged tumor group and elderly tumor group. The percentages of CD4+CD25+Foxp3+ Treg in CD4+ T cells in mice spleen cells were measured by flow cytometry, for reflecting the quantity of CD4+CD25+Foxp3+ Treg cells. And the level of Foxp3 mRNA in splenocyte was tested by real-time PCR method. Results The level of CD4+CD25+Foxp3+/CD4+ T cells and the quantity of Foxp3 mRNA were higher in tumor groups than in healthy groups(both P＜0.05 ). Besides, in the healthy groups, there were statistical differences in the level of CD4+CD25+Foxp3+/CD4+ T cells (F=47.70, P=0.000) and the quantity of Foxp3 mRNA among the different months groups. Accumulation of the CD4+CD25+Foxp3+ Treg cells was accompanied with aging, the elderly mice contained a significantly larger population of CD4+CD25+Foxp3+ Treg cells in their spleen when compared with the younger counterparts, and the highest was the elderly tumor group. So it was with the functional gene Foxp3 mRNA (F=6.56, P=0.009). Conclusions The results suggest a close relationship of the change of CD4+CD25+Foxp3+Treg cells with aging and the genesis and development of lung tumor.

Objective To detect the expression of extracellular-regulated kinase (ERK) and phosphatedextracellular-regulated kinase (P-ERK) in the hippocampus after pentylenetetrazoloe-induced status epilepsy and the effects of nimodipine on it.Methods Male Sprague-Dawley adult rats (200-250 g) were randomly divided into normal control group(NC,n =35),status epilepsy group (SE,n =40),nimodipine group (NIM,n =40).The rats were injected first with 40 mg/kg pentylenetetrazoloe(PTZ),followed 10 minutes later by 20 mg/kg PTZ,and subsequently,10 mg/kg PTZ ip every 10 minutes until SE occurred,apoint charactered by a loss of postural control and tonic-clonic seizures.Rats in control group received the same number of saline injections.Rats in NIM group were injected NIM(2.5 mg/kg) intraperitoneally 15 min before the injection of PTZ.Rats in every group were killed at 30 minutes,1 hour,3 hours,12 hours,24 horus,72 hours and 7 days after status epilepsy respectively and the hippocampus were dissected.The expression of ERK and P-ERK in the hippocampus were detected by Western blot.Results Nimodipine attenuated the convulsion of PTZ-induced status epilepsy.There was dynamic expression of P-ERK in SE group.In NIM group,the expression of P-ERK was markedly increased than that of SE group at 30 min,1h,3h,12h,24h,72h,and 7d (3.26 ±0.95 vs 2.56 ±0.82 at 30 min,P＜0.05).Conclusion Nimodipine attenuates the convulsion of PTZ-induced status epilepsy with increased expression of phosphated-ERK in the hippocampus of rats.

Aim To observe the expression of epider-mal growth factor receptor ( EGFR) in cerebral tissues around hematomas after intracerebral hemorrhage, and explore the effects of EGFR on activation of astrocytes derived from rats and the involved mechanisms. Meth-ods The specimens of cerebral tissues around hemo-tomas after intracerebral hemorrhage undergoing hemo-tomas removal operation were collected and then divid-ed into 4 groups according to the time of intracerebral hemorrhage: <1 d, 1 ~5 d, 6 ~10 d and >10 d groups. Each group included 20 cases. At the same time, 20 dropped brain tissues distant to hemorrhage in the operative process were collected as control group. Immunohistostaining and Western blot were used to measure the expression of EGFR. After isolation and culturing, the astrocytes of rat cortex were treated with culture solution ( control group) , CNTF that was used to activate astrocytes, scramble siRNA + CNTF and EGFR siRNA +CNTF for 24h, respectively. The ex-pression of glial fibrillary acidic protein ( GFAP) mR-NA was detected through fluorescence real-time quanti-tative PCR. In addition, the protein levels of GFAP, signal transducers and activators of transcription 3 ( STAT3 ) and phosphorylated STAT3 ( p-STAT3 ) were examined using Western blot. Results With the ex-tension of intracerebral hemorrhage time, positive sig-nal index and protein expression levels of EGFR gradu-ally elevated, reached the peak on 6 ~10d, and then decreased after 10 d. There was statistical difference ( P<0. 01 ) . The expression levels of GFAP mRNA and protein as well as p-STAT3 were significantly in-creased in cells treated with CNTF alone as compared to control group ( P <0. 01 ) , whereas these effects were almost completely reversed by EGFR siRNA transfection ( P <0. 01 ) . Additionally, there was no statistical difference in STAT3 protein levels among groups ( P >0. 05 ) . Conclusions EGFR expression is upregulated in the cerebral tissues around hemotomas after intracerebral hemorrhage. Gene silence of EGFR contributes to suppressing the activation of astrocytes derived from rats, which may be involved in the block-ade of STAT3 phosphorylation.

Objective To evaluate the importance of plasma MicroRNAs in early diagnosis of acute myocardial infarction (AMI).Methods 24 patients with AMI as the test group and 20healthy volunteers as the control group were enrolled in this study.Plasma levels of microRNA-1,microRNA-133a,microRNA-208a and microRNA-499 were detected by quantitative real time polymerase chain reaction (qRT-PCR) at 3 h,6 h,12 h,24 h,48 h,72 h after the onset of AMI.Results Plasma microRNA-1 level was greatly increased and reached the peak at 3 h after AMI,then was decreased gradually to normal level at 72 h after AMI.Plasma microRNA-133a level was significantly elevated at 6 h after AMI,reached peak at 12 h after AMI,then was decreased to normal level at 48 h after AMI.Plasma microRNA-1 and microRNA-133a levels were correlated with cTnI expression.The peak time of microRNA-1 was earlier than that of cTnI,while the peak time of microRNA-133a was the same as that of cTnI.Conclusions Increased circulating microRNA-1 and microRNA-133a may serve as potential and novel biomarkers for early diagnosis of AMI.

Depending on Shanghai medical big data center and taking the medical big data after quality control and before data utilization as research object,the paper establishes the data cleaning frame,gives the evaluation method for data availability,finds out the corresponding cleaning strategies according to the clustering analysis of data characteristics and repeatedly deduces the accuracy,reliability of the strategy,thus providing a strong support for the analysis and utilization of medical big data.

Objective: To analyze the duration and influencing factors of moderate and vigorous physical activity(MVPA) on weekends for primary school students in grades 4 to 6 in Beijing, and to provide a reference for formulating health education and promotion measures. Methods: Multi stage stratified cluster sampling method was used to randomly select 2 515 students from grades 4-6 in 14 primary schools in Beijing, and a self administered questionnaire was used to record MVPA on weekend, social demographic characteristics, other related health behaviors and knowledge. Multivariate Logistic regression analysis was used to explore the influencing factors of MVPA on weekends. Results: The prevalence of insufficient MVPA on weekends in Beijing was 63.54 %, and the prevalence was higher among girls (69.92%) than boys (57.81%) ( χ 2=39.65, P <0.01). Multiple Logistic regression analysis revealed that girls ( OR =1.74), living in rural areas ( OR =1.41), participants attending general schools ( OR = 1.34 ), from divorced family ( OR =1.46), and short sleep duration ( OR =1.50) were more likely to fail to meet the MVPA recommendations( P <0.05). Conclusion It is quite common that no sufficient weekend MVPA among senior primary school students, among them, the outer suburbs and schools with relatively weak teaching resources are the key places that need attention, and girls are the key groups that need attention.