The article mainly explores the dissimilarities of the use of strategies in English learning between the brilliant and inferior students in a university in Chongqing by means of rational analysis.It was found that the width and frequency of the study strategies used by the brilliant students were obviously more often than those by the inferior ones.And there was a lot of difference in the use of study strategies between the two.It showed that the former often adopted the approaches of imagining when reading,actively participating in the classroom activities,and process monitoring,etc.which are generally regarded as effective strategies and will contribute a great deal to successful English study,while the latter tended to use the way of looking for the surface meaning and word for word translation because they are always plagued by their mother tongue.

According to the current situation of the medical ethics education,much emphasis should be put on strengthening the practicalness of medical ethic education;to achieve this goal,the following aspects should be guaranteed: to combine the medical ethic education tightly with medical practices;to face all the difficulties and exert every means to work out the ethical issues emerged from the medical and healthy practice;to impart ethical education to professional curriculum,especially the course of clinical field work.

OBJECTIVE:To investigate therapeutic efficacy of bifidobacteria triple viable bacteria combined with infliximab in the treatment of moderate and severe ulcerative colitis(UC),and its effects on immune function. METHODS:Seventy-two UC pa-tients were selected from gastroenterology department of the First Affiliated Hospital of Chongqing Medical University during Jun. 2009 to Jan. 2015. They was divided into single group and combination group according to therapy plan,with 36 cases in each group. Single group was given infliximab 5 mg/kg,ivgtt,on 0,2nd,6th,8th week. Combination group was additionally given bi-fidobacteria triple viable bacteria 420 mg,tid. Both groups were treated for consercutive 2 months. Clinical efficacies were com-pared between 2 groups as well as the levels of humoral immunity and T cell function. The occurrence of ADR was observed in 2 groups. RESULTS:Clinical response rate of combination group was 86.11%,which was significantly higher than 52.78% of single group,with statistical significance (P<0.05). Before treatment,there was no statistical significance in humoral immunity and T cell function between 2 groups(P>0.05). After treatment,the levels of CD4+ and CD4+/CD8+ were significantly increased in both 2 groups,while the levels of CD8+,Th1 and Th2 were significantly decreased;the combination group was significantly better than the control group,with statistical significance (P<0.05);there was no statistical significance in CD3+ between 2 groups before and after treatment(P>0.05). After treatment,the levels of IgA and IgG were increased significantly in 2 groups,and the level of C3 was decreased significantly;the combination group was significantly better than the control group,with statistical significance (P<0.05);there was no statistical significance in IgM content and C4 level between 2 groups before and after treatment (P>0.05). There was no statistical significance in the incidence of ADR between 2 groups(P>0.05). CONCLUSIONS:Bifidobacteria triple viable bacteria combined with infliximab shows significant therapeutic efficacy in the treatment of moderate and severe UC, and can significantly improve humoral immunity function and the recovery of T cell level,with good safety.

Objective: To establish real-time recombinase polymerase amplification（RPA）for the rapid detection of Vibrio parahaemolyticus（VP）. Methods: An exo probe and primers were designed according to the conserved sequence of thermolabile hemolysin（tlh）gene of VP and then RPA for detection of VP was established. The sensitivity of the assay was evaluated by detecting different concentration of VP;the specificity was evaluated by detecting different bacteria;the stability was evaluated by repeat trials;the application effect was evaluated by detecting food samples which were simultaneously tested with traditional culture method according to GB 4798.7-2013 Detection of VP. Results: A real-time RPA was established to complete VP amplification within 20 min at a constant temperature of 39 ℃. The analytical sensitivity of the assay was five pg per reaction and no cross-reactivity with other pathogenic bacteria observed. The RPA detection results with different concentration of VP and E. coli DNA templates at three time points were consistent. The detection results of 51 food samples by RPA were the same as those by traditional culture method. Conclusion The established real-time RPA can qualitatively detect VP,with simple operation and interpretation of results,which is suitable for rapid detection of VP in public health emergencies and food safety supervision.

Objective To evaluate the significance of AFP-IgM, this is one of new tumor markers, in the diagnosis of primary hepatocellular carcinoma (PHC). Methods The contents of AFP-IgM and AFP in serum of 103 healthy subjects, 74 patients suffered primary hepatic carcinoma, 27 patients affected by liver cirrhosis and 63 patients affected by chronic hepatitis were detected by means of enzyme linked immunosorbent assay and electrochemiluminescence. No-PHC is comprised of liver cirrhosis,chronic hepatitis and health subjects as control group. Results The area under ROC curve of AFP was larger than that of AFP-IgM (0.85 vs 0.72, Z=3.21) and the best cut-off value of AFP-IgM and AFP was 3×105-AU/L and 10 ug/L respectively, which was determined by ROC curve. Under the cut-off value, the sensitivity of AFP- lgM and AFP for PHC were 64.9% and 79.7%, and the specificity were 75.6% and 80.3%, yet their efficacies were similar. However, for early diagnosis of liver cancer (stage Ⅰ and Ⅱ), the area under ROC curve of AFP-IgM was larger than that of AFP (0.91 vs 0.82,Z=1.73). The sensitivity of AFP-IgM andAFP were 94.4% and 72. 2%, and the specificity were 81.9% and 79.9%. The differences of AFP-IgMand AFP for early diagnosis of liver cancer were statistically significant. When both of the test results combined AFP-IgM with AFP are positive, it can be diagnosed as liver cancer. The specificity of combineddetermination of the two forms was 89.1%, and the efficacy was 79. 0%. Conclusions Both of thesensitivity and specificity of the AFP-IgM test were higher than that of the AFP for early diagnosis of livercancer. We also found that combined determination of the two forms significantly increased the specificityand the positive predictive value for the diagnosis of PHC, thus AFP-IgM was of especially significance forearly diagnosis of liver cancer.

Objective: To investigate the efficacy and safety of using pegylated recombinant human granulocyte-colonystimulating factor (PEG-rhG-CSF) in preventing neutropenia in multiple chemotherapy cycles. Methods: A multicenter, prospective, open-label, singlearmstudy was designed. Patients with malignant tumors, such as lung, ovarian, and colorectal cancers, who received multiple cycles of chemotherapy with the prophylactic use of PEG-rhG-CSF for 2-4 consecutive cycles participated in the study. Results: After the prophylactic use of PEG-rhG-CSF, the incidence of grade IV neutropenia decreased from 4.76% (13/273) in the first cycle to 1.83% (5/273), 1.15% (2/174), and 2.08% (2/96) in subsequent cycles. Meanwhile, the incidence of grade III neutropenia decreased from 11.36% (31/ 273) in the first cycle to 6.23% (17/273), 2.87% (5/174), and 3.13% (3/96) in subsequent cycles. The incidence of febrile neutropenia (FN) during the first cycle was 0.73% (2/273). The duration of FN was 2 days in one case and 5 days in another case. FN was not observed during the second, third, or fourth cycle. After the secondary prophylactic use of PEG-rhG-CSF, the incidence of grade IV neutropenia decreased from 25% (7/28) to 3.57% (1/28), 0% (0/28), and 6.67% (1/15) in subsequent cycles. Meanwhile, the incidence of grade III neutropenia decreased from 71.43% (20/28) to 10.71% (3/28), 14.29% (4/28), and 0% (0/15) in subsequent cycles. The proportion of patients who received antibiotic therapy during the entire chemotherapy period was 10.48% (44/420). Conclusion: The application of PEG-rhG-CSF once per chemotherapy cycle can effectively reduce the occurrence of neutropenia in patients under multiple cycles of chemotherapy treatment with good safety.

Objective To compare the biomechanical characteristics of medial and lateral locking plates for Schatzker typeⅥfractures of tibial plateau by finite element analysis. Methods A 38 year-old male volunteer was enrolled for CT scan of his lower limbs. His CT images of the left tibial plateau were used for 3D reconstruction of a model of Schatzker type Ⅵ fracture by NX 9.0 software. After the boundary con-ditions were set, a 500 N load was applied to the tibial plateau to simulate the stress on a single leg when an adult weighing 60 kg walked. The displacement and stress on plate and screws were analyzed by Abaqus software. Results The ultimate stress on the model fixated with a medial locking plate was 81.7 MPa, located at the proximal tibiofibular joint surface. The ultimate stress on the model fixated with a lateral locking plate was 487.4 MPa, located at the junction of plate and screws. The ultimate stress on the fibula was much larger in the model fixated with a medial locking plate than in the model fixated with a lateral locking plate. The ultimate displacement was smaller and more homogeneous in the model fixated with a medial locking plate (1.15 mm) than in the model fixated with a lateral locking plate (3.44 mm).Conclusion The Schatzker type Ⅵ fractures of tibial plateau should be fixated with a medial locking plate because it has more biomechanical advantages than a lateral locking plate.

OBJECTIVEDuring 2003-2005, an outbreak of meningitis due to Neisseria meningitidis serogroup C occurred in China. With the aim to find strain clues result in the final epidemics, the ancestral strain 053442, a clinical isolate, and a carrier strain 053426 with different gene type were analyzed.

METHODSClinical strain 053442 and carrier strain 053426 were cultured on GC agar plates under the same condition. Two-dimensional electrophoresis was performed using the pH 3-10 nonlinear IPG strips of 24 cm length, and all the protein spots were identified by matrix-assisted laser desorption/ionization time of flight spectrometry.

RESULTS502 and 380 protein spots were identified in 053426 and 053442 respectively, relating to 266 and 202 different genes covering a wide range of cellular functions. The express volume and number of proteins involved in energy metabolism, protein synthesis and amino acid biosynthesis in 053426 were higher than in 053442. Virulence factor Opa, Opc and a series of proteins involved in pilus assembly and retraction were identified in 053442, which appear to be of primary importance in colonization and invasion of human cells. Compared to 053442, virulence protein species were less in 053426, with lower express volumes too. No Opa and Opc were detected in 053426.

CONCLUSIONSThe different protein expression profiles of the clinical strain 053442 and carrier strain 053426 in the present study provide some clues of the different pathogenicity of the two strains, which may account for result in the final epidemics.

Bacterial Proteins ; analysis ; Bacterial Typing Techniques ; China ; epidemiology ; Disease Outbreaks ; Electrophoresis, Gel, Two-Dimensional ; Humans ; Meningitis, Meningococcal ; cerebrospinal fluid ; epidemiology ; microbiology ; Neisseria meningitidis, Serogroup C ; classification ; isolation & purification ; Proteome ; analysis ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

OBJECTIVETo identify potential serum biomarkers for distinguishing between latent tuberculosis infection (LTBI) and active tuberculosis (TB).

METHODSA proteome microarray containing 4,262 antigens was used for screening serum biomarkers of 40 serum samples from patients with LTBI and active TB at the systems level. The interaction network and functional classification of differentially expressed antigens were analyzed using STRING 10.0 and the TB database, respectively. Enzyme-linked immunosorbent assays (ELISA) were used to validate candidate antigens further using 279 samples. The diagnostic performances of candidate antigens were evaluated by receiver operating characteristic curve (ROC) analysis. Both antigen combination and logistic regression analysis were used to improve diagnostic ability.

RESULTSMicroarray results showed that levels of 152 Mycobacterium tuberculosis (Mtb)-antigen- specific IgG were significantly higher in active TB patients than in LTBI patients (P < 0.05), and these differentially expressed antigens showed stronger associations with each other and were involved in various biological processes. Eleven candidate antigens were further validated using ELISA and showed consistent results in microarray analysis. ROC analysis showed that antigens Rv2031c, Rv1408, and Rv2421c had higher areas under the curve (AUCs) of 0.8520, 0.8152, and 0.7970, respectively. In addition, both antigen combination and logistic regression analysis improved the diagnostic ability.

CONCLUSIONSeveral antigens have the potential to serve as serum biomarkers for discrimination between LTBI and active TB.

Adolescent ; Adult ; Aged ; Antibodies, Bacterial ; Antibody Specificity ; Antigens, Bacterial ; Biomarkers ; blood ; Female ; Humans ; Latent Tuberculosis ; blood ; diagnosis ; Logistic Models ; Male ; Middle Aged ; Mycobacterium tuberculosis ; Protein Array Analysis ; methods ; Proteome ; genetics ; Proteomics ; methods ; ROC Curve ; Young Adult

Objectives: To understand the status of studies about influenza economic burden in mainland China and summarize their major results. Methods: The words of influenza, flu, cost, economic, burden, effectiveness, benefit, utility, China, and Chinese, were used as search keywords. Journal papers published during 2000-2018 were searched from Chinese electronic databases (CNKI and Wanfang) and English electronic databases (PubMed, Web of science, EconLit and Cochrane Library). The language of literature was restricted to Chinese and English. A total of 23 effective documents were included, and the descriptive characteristics, research indexes and methods included in the literature were analyzed. The monetary unit used in this review is Chinese Yuan (CNY). Results: The 23 study sites were mainly in the relatively developed and populous regions. The total cost per capita of laboratory-confirmed influenza,of all age-group was reported in 6 literatures, and only 4 literatures reported it in out-patients (range: 768.0-999.9 CNY), Only one study reported this indicator in inpatients (9 832.0 CNY). One literature reported the total cost per capita of influenza-like illness,, which was 205.1 CNY. And one literature reported that the direct medical cost of inpatients per capita in children under 5 years of age was 6 072.0 CNY while two literature reported this index for the elderly over 60 years of age, ranging from 14 250.0 to 19 349.1 CNY. Four articles reported the economic burden of influenza in urban and rural areas, one of which showed that the related expenses of urban influenza inpatients accounted for 31% of the average annual income, while which for the rural flow was 113%. Conclusion The average economic burden of lab-confirmed influenza case is higher than that of influenza-like illness, and there are differences in outpatient indirect expenses and inpatients direct medical expenses. The direct medical burden for the hospitalized 60-years-and-beyond influenza case group is heavier thar other age group. By region, the influenza associated individual economic burden in rural area is higher than that of urban area..