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Objective@#This epidemiology survey is intended to assess the periodontal health conditions of 12 to 15-year-old adolescents and the associated factors in Shenzhen.@*Methods@#The study utilized a multistage stratified cluster method and recruited 5 509 middle school students aged 12 to 15. Gingival bleeding and calculus were conducted and a self-reported questionnaire was administered. Additional periodontal pocket depth and attachment loss examination were performed in the 15-year-age group. Periodontal conditions and the associated factors were analyzed by t-test, Chi-square method and Logistic regression.@*Results@#The prevalence of gingival bleeding and calculus among adolescents was 43.95% and 44.25%, and the prevalence of periodontal pockets ≤3 mm was 0.57%. No periodontal pockets ≥6 mm or attachment loss ≥4 mm were detected. Gender, family income and frequency of teeth brushing were significantly associated with calculus detection (P＜0.05). The use of fluoride had an significant effect on gingival bleeding detection and calculus detection (χ 2=9.70，6.16，P＜0.05).@*Conclusion@#The periodontal health condition among 12-15 years old adolescents in Shenzhen is generally better than the national level. Adolescents living in high-economic districts and females had better periodontal health condition. The government can promote health education in schools and popularize the use of fluoride to improve the periodontal health condition among adolescents.
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Objective The objective of this study was to investigate the clinical value of serum microRNA in predicting chemotherapy efficacy in patients with nasopharyngeal carcinoma. Methods A total of 187 patients with nasopharyngeal carcinoma who received cisplatin combined chemotherapy were enrolled in our hospital from January 2010 to December 2016,including 123 pa-tients with chemotherapy sensitivity and 64 patients with chemotherapy resistance. The serum levels of miRNA before the initial chem-otherapy were measured,the efficacy and predictive value of serum miRNA in nasopharyngeal carcinoma patients were evaluated using healthy subjects as controls. Results Serum level of miR-127 in nasopharyngeal carcinoma patients was significantly higher than that in healthy controls(4. 3 ± 1. 6 vs. 1. 4 ± 0. 5,P<0. 001). Serum level of miR-127 was significantly higher in chemotherapy-resistant patients than that in chemotherapy-sensitive patients(4. 5 ± 1. 3 vs. 3. 8 ± 1. 7,P<0. 001). The ROC curve showed that the predictive value of serum miR-127 for chemotherapy resistance in nasopharyngeal carcinoma patients was 0. 702(P<0. 001), with the optimal cut-off value of 4. 2,sensitivity of 82. 3% and specificity of 76. 3% . Compared with the chemotherapy-sensitive group,the proportion of patients with T3-4 ,N3 and TNM Ⅲ~Ⅳ in the chemotherapy-resistant group was significantly increased(P<0. 01),and the proportion of miR-127≥4. 2 was also increased(P<0. 001). Multivariate logistic regression analysis showed that TNM staging(OR=1. 655,95% CI:1. 142~2. 584,P=0. 016)and serum miR-127≥4. 2(OR=2. 231,95% CI:1. 762~4. 503,P=0. 001)were independent risk factors affecting chemotherapy resistance in nasopharyngeal carcinoma patients. Conclusion The el-evated serum level of miR-127 is an important risk factor for predicting chemotherapy resistance in patients with nasopharyngeal car-cinoma.
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Objective To construct a quantitative evaluation model for the suitability evaluation of scientific research innovation team members.Methods Firstly to identify and clarify the key indicators of the evaluation of scientific research team members,including:the evaluation of professional relevance of members,academic contribution expectation of members,evaluation indicators of cooperation convenience,and analysis of common evaluation indicators of objectives.Secondly,to conduct qualitative analysis of relevant indicators to determine the weighting levels of each sub-item of different indicators.Finally,design the mathematical model of calculation according to the weights and scores granted to the importance,grade,etc.of the indicators.Results After the simulation calculation,the designed formula can better reflect the weighting level of different indicators,which makes the evaluation of the suitability of the research team members feasible.Conclusions Quantitative evaluation of the suitability evaluation index of innovation team members makes the evaluation of innovation team members have evidence to follow,the evaluation results are fair and equitable,and easy to be accepted by all parties.It also helps to guide the team to clearly establish the direction.
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Objective To summarize the clinical efficacy of thoracic endovascular aortic repair (TEVAR) in the treatment of Stanford type B thoracic aortic dissection. Methods The clinical data of 80 patients with Stanford type B aortic dissection who had underwent TEVAR in cardiac surgery of the First Affiliated Hospital of University of Science and Technology of China from January 2017 to December 2017 were analyzed retrospectively. Among them, there were 56 males and 24 females. The effect of operation and postoperative complications were observed. The diameters of different aortic levels before and after TEVAR were compared in order to understand the aortic remodeling after TEVAR. Results All 80 patients were operated successfully. A total of 87 stents were implanted, of which 2 stents were placed in 7 patients. Four patients died 30 days after operation, 3 of whom were diagnosed as dissection rupture before operation and underwent emergency TEVAR. The cause of death was massive hemorrhage due to re-rupture of dissection. One patient complicated with massive cerebral infarction before operation died of respiratory failure. Six months after operation, CTA showed that the diameter of the aortic true lumen at the level of the left subclavian artery, the maximum diameter of the tumor and the level of the diaphragm significantly increased: (30.1 ± 3.5) mm vs. (24.4 ± 4.2)mm, (33.4 ± 5.1) mm vs. (24.9 ± 6.2) mm,(26.1±4.9) mm vs. (19.3 ± 3.1) mm; all P values＜0.01, and the false lumen significantly decreased: (3.5 ± 1.7) mm vs. (11.2 ± 5.7) mm, (9.1 ± 2.4) mm vs. (18.3 ± 5.9) mm, (6.2 ± 1.3) mm vs. (14.7 ± 5.2) mm, all P values＜0.01. There was no significant difference in the overall diameter of aorta before and after operation (P > 0.05). Conclusions The treatment of Stanford type B aortic dissection with TEVAR has significantly good short-term clinical efficacy, which is less traumatic and quick to recover. However, the long-term efficacy remains to be observed.
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The current evaluation for scientific and technological achievements and innovation is mainly based on novelty retrieval report conducted by professional organizations.However, such retrieval could not measure the actual value of a scientific and technological achievements comprehensively, such as the practicality and economic value of the outcome;and possibility to be adopted by industry, etc.Current study, from the application aspective, was trying to evaluate the scientific and technological achievements using effectiveness appraisal theory, which emphasis on pre-ethical assessment, demand and adoption assessment, and economic value assessment.It reveals the special phenomenon that that the outcome of innovation may decay over time, however, the effectiveness of innovation would enhance over time.This study also designed a mathematical model and the empirical use.
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Hospital research mainly by high-level researcher to promote,and researcher of the research initiative will determine the contribution of their research.This initiative from the start of economic regulation researcher to explain the economics-based perspective that affect high-level researcher positive factors research and put forward relevant mathematical relationship between the influencing factors and mathematical models,and scientific researcher positive regulator of a number of ways.
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Hospital Research Branch to provide diversity of services should rely on a combination of different professionals composite research management department.This paper analyzes the current status of the hospital research management staff proposed the formation of complex multifunctional research subjects and their personnel training programs,and the staff have made short-term and long-term co-ordination of running countermeasures,as well as multi functional management functions method.
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Over the past few years,Cheng Medical College has made great progress in the fields of discipline construction,specialty construction,talent training,and scientific research.This paper illustrates the specific methods for application for National Natural Science Foundation as well as the project management,and explores the practice and use of elaborate management.According to this management requirements,Chengdu Medical College has determined goals,defined declare focus,enhanced the application quality,standardized and specified project management so much so that it has achieved remarkable results in recent years.
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The project's scientific research project to improve the smooth knot problem for the credibility of Research management sector is very important,but in fact some of the project is not only the project node title,or because of subjective and objective factors that lead to project failure,brought credibility to the project undertaking unit loss.This common scientific research project on risk analysis and identification,reporting that the project's adverse reporting motivation,the strength of the research team,project costs capability,scientific research project of the natural properties of the risk,as well as technical and scientific research platform so may result in risk project delay or failure.Articles from Research management policies,systems,methods,attitude problem-a response.
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High-level researchers,who can efficiently enhance the research strength of the college,are often brought in at high cost.Therefore there is often the need to scientifically evaluate these researchers when introduce them.We here discuss the main indicators for the evaluation of High-level researchers.Taking into consideration of their age,research span,et al.,we propose a model for the quantitative evaluation of research capability based on research achievement and prediction of future achievement,
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Objective To investigate the regulatory effects of PTEN-PI3K/AKT pathway on the apoptosis of gastric cancer MKN28 cells and the possible mechanisms.Methods The specific sequence of PTEN was transfected to MKN28 cells by eukaryotic expression vector (transfection group),and then vacant vector (negative control group) and PBS (blank control group) were transfected to the MKN28 cells,respectively.The effects of PTEN-PI3K/AKT pathway on the apoptosis of MKN28 cells and the expressions of PI3K,AKT,Caspase-3 and Caspase-9 were investigated.The growth curve and apoptosis of the MKN28 cells were detected by MTT assay and TUNEL staining,respectively,and the protein expression was detected by the Western blot.MKN28 cells which did not transfected by the PTEN were processed by inhibitor of PI3K (LY294002) (treated group),and MKN28 cells in the control group were processed by PBS.The expressions of apoptosis protein and apoptosis-related protein were detected after inhibition of PI3 K.All data were analyzed using the t test.Results The model of over-expression of PTEN was obtained and transfected into MKN28 cells.The survival of MKN28 cells in the transfection group was significantly inhibited in a time-dependant manner ( r =0.938,P ＜ 0.05 ).The mean apoptotic rate of the transfection rate was 27.86％ ± 4.78％,which was significantly higher than 0.01％ ± 0.01％ of the negative control group ( t =9.527,P ＜ 0.05 ).The protein expression of PI3K in the transfection group was 0.25 ± 0.03,which was significantly lower than 0.93 ± 0.16 of the blank control group and 0.96 ± 0.15 of the negative control group (t =7.235,8.883,P ＜ 0.05 ).The protein expression of P-AKT in the transfection group was 0.21 ± 0.03,which was significantly lower than 0.93 ± 0.13 of the blank control group and 0.91 ± 0.12 of the negative control group (t =9.347,9.802,P ＜ 0.05 ).The expressions of Caspase-3 and Caspase-9 of the transfection group were 0.86 ± 0.11 and 0.87 ± 0.12,which were significantly higher than 0.16 ± 0.03 and 0.18 ± 0.04 of the negative control group,and 0.15 ± 0.02 and 0.16 ± 0.03 of the blank control group ( t =10.634,10.999,9.448,9.942,P ＜0.05).The apoptotic rate of the MKN28 cells of the treated group was 28.60％ ± 4.50％,which was significantly higher than 0.12％ ± 0.06％ of the control group (t =10.961,P ＜ 0.05 ).The protein expression of PI3K and P-AKT of the treated group were 0.18 ± 0.02 and 0.11 ± 0.01,which were significantly lower than 0.93 ± 0.14 and 0.90 ± 0.12 of the control group (t =9.186,11.363,P ＜ 0.05 ).The protein expression of PTEN of the treated group was 1.15 ± 0.15,which was significantly higher than 0.21 ± 0.08 of the control group (t =9.577,P ＜ 0.05 ).The relative expressions of Caspase-3 and Caspase-9 of the treated group were 0.86 ± 0.12 and 0.88 ± 0.11,which were significantly higher than 0.25 ± 0.02 and 0.21 ± 0.03 of the control group (t =8.685,10.178,P ＜ 0.05).Conclusions Over-expression of PTEN may enhance the apoptosis of gastric cancer cells through inhibition of PI3K/AKT pathway.Inhibition of PI3K can enhance the expression of PTEN.PI3K and PTEN regulate the apoptosis of gastric cancer cells.
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Objective To study the prevention and treatment effect of ω-3 fatty acids on intestinal mucosa in critical illness. Methods Forty patients including severe trauma, infection shock were enrolled as experimental group, while 30 healthy people as control group. At the same time, the patients in expermental group were randomly divided into group A and group B(20 cases each). While the patients were. Treated with low calorie parenteral nutrition totally, those in group A received ω-3 fatty acids additionally. The plasma concentrations of dimnine oxidase (DAO), endotoxin were detected by spectrophotography, and TNF-α was detected by ELISA. Results After treatment the concentration of DAO, endotoxin, TNF-α in group A and that of endotoxin in group B decreased significantly (P<0.05 ). While there was no significant difference of endotoxin levels between group A and group B. After therapy, DAO and TNF-α levels in group A were sig-nificantly lower than those in group B (P<0.05 ). The concentrations of DAO and TNF-α in group B were also significantly higher than those in control group (P<0.05). Conclusion ω-3 fatty acids can prevent and treat critical intestinal mucosa effectively.
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<p><b>OBJECTIVE</b>To investigate the therapeutic effects of perindopril, an angiotensin-converting enzyme inhibitor, and valsartan, an angiotensin II receptor blocker on TGFbeta1 and TGFbeta receptor II mRNA, Smad3 and Smad7 on rat liver fibrosis.</p><p><b>METHODS</b>60 Wistar rats were randomly divided into four groups (each group, n=15). Group 1 rats were not treated and served as healthy controls. The rats of groups 2,3,and 4 were injected with CCl(4) which induced liver fibrosis. After four weeks, group 3 rats started a treatment of perindopril, and group 4 rats with valsartan. All rats were sacrificed at the eighth week and their blood and livers were collected for analysis. The effects of perindopril and valsartan were evaluated by the levels of transforming growth factor-beta1 (TGFb1), and TGF receptor (TGFb1RII) mRNA in liver tissues by RT-PCR, the expressions and sites of TGFb1, Smad3 and Smad7 in liver tissue by immunohistochemical staining. The liver histopathology was also examined with HE staining, and the hydroxyproline in the liver and serum hyaluronic acid (HA) were examined using biochemsitry and RIA.</p><p><b>RESULTS</b>Compared with the control group, the levels of TGFb1, TGFb1RII mRNA and the expression Smad3 were significantly decreased in the two treated groups, and the expression of Smad7 was also remarkably increased in the livers of rats treated with perindopril or valsartan. The histological changes of fibrosis, the hydroxyproline in the livers and HA were also improved in the treated rats.</p><p><b>CONCLUSION</b>Perindopril and valsartan have a protective effect on liver injury and can inhibit hepatic fibrosis induced by CCl(4) in rats. Their mechanisms may be associated with their effects of down-regulating TGFb1, TGFb1RII mRNA and smad3, and up-regulating Smad7 which then resulted in suppressing the activation of hepatic stellate cells.</p>
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Animals , Female , Male , Rats , Angiotensin-Converting Enzyme Inhibitors , Pharmacology , Carbon Tetrachloride , Carbon Tetrachloride Poisoning , Liver Cirrhosis, Experimental , Metabolism , Perindopril , Pharmacology , RNA, Messenger , Genetics , Random Allocation , Rats, Wistar , Receptors, Transforming Growth Factor beta , Genetics , Smad3 Protein , Genetics , Smad7 Protein , Genetics , Tetrazoles , Pharmacology , Transforming Growth Factor beta , Genetics , Transforming Growth Factor beta1 , Valine , Pharmacology , ValsartanABSTRACT
This article analyzes the Chinese medicine psychology the principle,elaborated after earthquake disaster,people's main psychological feature,and proposed the Chinese medicine psychology intervention method.
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This article comprehensively analyzed the population able to provide psychology advisory service in China,including the common populace, and the specialized talents who are qualified to provide specialized psychology service.Various problems in the current psychology advisory service and their causing factors were elaborated,and based on which suggestions were proposed for a better application of psychology advisory service to the society.