Objective To analyze the effects of information literacy on participation in scientific research for medical students.Methods The self-administered questionnaire was used to survey the general characteristics,information literacy,participation in scientific research projects of junior college students,undergraduates,and graduate students who majored in medical specialties such as clinical medicine.The participation in scientific research includes the following statuses:those who did not participate in any project (group A),those only participating in the teachers' projects (group B),the team members of college students' projects (group C),and the leaders of college students' projects (group D).The data were tested using x2 test,one-way analysis of variance,and multinomial logistic regression analysis in SPSS 17.0 for windows.Results The survey recycled 1 236 copies of effective questionnaires.About 39.6％ (489/1 236) students participated in scientific research.The scores of information consciousness,information ability,and information morality,and total scores had statistically significant differences among the four groups (P=0.000).The scores of information ability and total scores of group D (n=73) were higher than those of group A (n=747),B (n=93),and C (n=323) (P＜0.05),respectively.With group A as a reference category,the scores of information ability of group D,C,and B had statistically significant partial regression coefficients (P=0.005,P=0.000,P=0.000,respectively),as well as total scores (all P=0.000).Conclusion High information literacy may be one of factors that promote students to participate in college students' scientific research projects.Various comprehensive measures should be taken to cultivate students' information literacy and improve students' scientific research ability.

Objective To establish the method to analyze the contents of Costunolide and Dehydrocostus Lactone in Tibetan medicineLiuwei Muxiang Pill.Methods HPLC method was used; the XDB-C18 column (4.6 mm × 50 mm, 1.8μm) was adopted;the mobile phase was methanol- water (60∶40);the flow rate was 0.8 mL/min;UV detection was 225 nm.Results The linear range of Costunolide and Dehydrocostus Lactone was 0.235 5-1.413μg and 0.291 3-1.748μg. The average recoveries were 99.25% and 99.41%, respectively.Conclusion The method is accurate, reliable, stable and with good repeatability, which provides the basis for the quality evaluation of Tibetan medicineLiuwei Muxiang Pill.

The paper first gives an account of the historical backgroumd of the formation of the World Trade Organization and the existing 6 basic principles of it. Then it explains the principles and extent of the opening of the health sector to the outside world and the specific promises made by China in the negotiations involved in its accession to the WTO. Finally the paper speculortes about the effects of Chinas entry into the WTO on domestic hospitals and suggests corresponding strategies.

Medical inorganic chemistry is one of the most important basic courses to bioinformatics specialty,according to the requirements of curriculum;the paper introduces a series of reform and practice in inorganic chemistry teaching content,teaching method and form.These stimulate the students'study interest,enhance educational effect,and let this curriculum serve professional curriculums.

Objective To analyze the effects of medical undergraduates' creativity tendency on participation in scientific research.Methods The self-administered questionnaire was used to survey the general characteristics,Williams creativity tendency,participation in scientific research projects of the junior students who majored in 10 medical specialties such as clinical medicine.The participation in scientific research includes the following statuses:those who do not participate in the scientific research project(NPSR,group A),those only participating in the teachers' scientific research project (PTSR,group B),those participating in college students' scientific research project as team members (TMSR,group C),and those participating in college students' scientific research project as project leaders(PLSR,group D).The differences of four dimensions scores and total scores of creativity tendency among four groups were tested using one-way analysis of variance.The effects of creativity tendency on participation in scientific research were tested with multinomial logistic regression analysis.Results The survey recycled 2 286 copies of effective questionnaires.About 39.1％(894/2 286) students participated in scientific research.The students were divided into A group(n=1 392),B group (n=108),C group(n=626),D group(n=160).The scores of adventure,curiosity,imagination,chal lenge and total scores had statistically significant differences among the four groups(P=0.000).The scores of adventure,curiosity,challenge and total scores of group C and D were higher than those of group A(P＜0.05),respectively.With NPSR as a reference category,the scores of adventure(P=0.011),imagination (P=0.023),challenge (P=0.025) of PLSR had statistically significant partial regression coefficients,and the scores of adventure(P=0.009),curiosity(P=0.002) of TMSR had statistically significant partial regression coefficients.Conclusion High creativity tendency may be one of influencing factors that promote students to participate in college students' scientific research project.Various comprehensive measures should be taken to cultivate students' creativity and improve students' scientific research ability.

BACKGROUND: Clinically, in patients undergoing hematopoietic stem cell transplantation (HSCT), human cytomegalovirus (HCMV) can be associated with delayed platelet engraftment, phenotypically abnormal peripheral blood leukocytes, and graft rejection, possibly through a direct viral effect on hematopoietic progenitor cells after HCMV infection. OBJECTIVE: To investigate the inhibitory effect of ganciclovir (GCV) on proliferation of colony forming unit (CFU) granulocyte-macrophage (CFU-GM), CFU-erythroid (CFU-E), CFU T-lymphocyte (CFU-TL), CFU-multipotential (CFU-Mix) and CFU-megakaryocyte (CFU-Mk) progenitor cells of cord blood (CB) and the protective effects on them. DESIGN: Contrast observational study.SETTING: Department of Molecular Biology, Affiliated Hospital of Luzhou Medical College.PARTICIPANTS: A total of 20 cord blood (CB) samples (with 10 mL for each sample) from fetal umbilical vein of normal term spontaneous delivery neonates were provided by the Department of Gynaecology and Obstetrics, Affiliated Hospital of Luzhou Medical College. All the patients were informed and agreed with the experiment.METHODS: The experiment was carried out in the Department of Molecular Biology, Affiliated Hospital of Luzhou Medical College from June 2004 to December 2006. Colony forming unit-assay was applied to observe the suppression effect of HCMV-AD169 strain on CFU-GM, CFU-E, CFU-TL, CFU-Mix and CFU-Mk of CB with the presence of GCV. The techniques of polymerase chain reaction (PCR) and fluorescence quantification PCR were used to demonstrate the existence of HCMV-AD169 DNA in the colony cells of cultured CFU-GM, CFU-E, CFU-TL, CFU-Mix and CFU-Mk. Normal progenitor cells culture system was regarded as blank control group; normal progenitor cells culture system with inactivated HCMV fluid as inactivated (IV) control group.MAIN OUTCOME MEASURES: ① The number and maintaining duration of colonies of cultured progenitor cells were counted by using a light inverted phase contrast microscope. ② The techniques of PCR and fluorescence quantification PCR were used to demonstrate the existence of HCMV-AD169 DNA in the colony cells of cultured progenitor cells.RESULTS: ① Number and lasting time of colonies: The numbers of CFU-GM, CFU-E, CFU-TL, CFU-Mix and CFU-Mk colonies in the HCMV infection group were significantly less than those in the blank control group (P < 0.01). The maintaining duration of colonies in the HCMV infection group was significantly shorter than that in the blank control group (P < 0.01). HCMV-DNA copies of colony cells of GCV group decreased significantly by using fluorescence quantification PCR compared with HCMV group (P < 0.01), while negative in blank control and inactivated control in CFU-MK and CFU-Mix. ② CFU Growth rate: The Growth rate of colonies was 37.4%, 74.2%, 40.1%, 67.4% and 38.9% of CFU-GM, CFU-E, CFU-TL, CFU-Mix and FU-MK, respectively. ③ CFU-HCMV-AD169 DNA: Fluorescence quantification PCR showed that nucleonic acid content of progenitor cells after GCV-affected HCMV infection was decreased as compared with that after HCMV infection (P < 0.01).CONCLUSION: The differentiation and proliferation of CFU-GM, CFU-E, CFU-TL, CFU-Mix and CFU-Mk are significantly inhibited after infected with CMV-AD169 strain. The growth of hematopoietic progenitor cell after HCMV-AD169 infection is promoted by GCV, which suggests that GCV has an effect of anti-HCMV in vitro.

Objective To investigate the value of CT pulmonary artery obstruction index (PAOI)in evaluating the severity in patients of pulmonary embolism (PE)by a correlation study between CT PAOI and right ventricular function parameters and arterial blood gas analysis index.Methods CT PAOI,right ventricular function parameters and arterial blood gas analysis index were collected from 70 patients with PE,who had received CT pulmonary angiography (CTPA)examination in our hospital.Spearman rank correlation coefficient was used to evaluate the correlation between the PAOI and right ventricular/left ventricular maximum short axis diameter ratio (RVd/LVd),main pulmonary artery diameter (MPAd),superior vena cava diameter (SVCd),arterial oxygen partial pressure (PaO2 ),arterial carbon dioxide into pressure (PaCO2 ),oxygen saturation (SaO2 ),Alveolar arterial oxygen partial pressure difference (P(A-a)O2 ).Results PAOI and PaO2 were negative correlation,the correlation coefficient was -0.442;PAOI and RVd/LVd, MPAd,SVCd,P(A-a)O2 were positively related,correlation coefficients ranged between 0.163-0.675;PAOI was not related to SaO2 .Conclusion CT PAOI can be used to evaluate the severity of PE,it is not consistent with the severity of the patient’s clinical condition.

Objective To establish a simple ,rapid,highly specific and sensitive molecular detection of carbapenem-resistance acinetobacter baumannii(CRAB)OXA-23 genes,and this method is used to detect the multiple drug-resistant acinetobacter bau-mannii in our hospital,and the purpose is to know the antibiotic resistance of CRAB OXA-23 genes .Methods The loop-mediated isothermal amplification(LAMP)was established for detection of the CRAB OXA-23 genes,and a set of specific primers were de-signed by special software,PrimerExplorer version 4.The LAMP assay was developed on using SYBR Green Ⅰ for fluorescent chromogenic reaction substances,improved through a series of optimization tests,and through macroscopic observation and electro-phoresis test comparison results.At the same time,the application of LAMP was used to test 41 multiple drug-resistant acineto-bacter baumanniis which were collected from December 2013 to March 2014 in our hospitalized patients.Results The ladder ban-ding was produced in CRAB OXA-23 genes strains by the LAMP detection through electrophoresis test,however,no ladder ban-ding was observed in the others .The color of the amplification product in genes strain CRAB OXA-23 changed from orange to green by adding 1 μL SYBR Green Ⅰ,however it was still orange in others.The sensitivity of the LAMP detection in pure cultrue was 5 cfu/μL of the CRAB OXA-23 genes cells.Application of LAMP was used to separate multiple drug-resistant acinetobacter baumanniis from hospitalized patients ,32 strains were tested in 41 strains,the positive rate was 78.04%.Conclusion Separation of the CRAB OXA-23 genes carry rate is higher in our hospital ,and they have very high resistance of commonly used antibacterial drugs.The LAMP method to test OXA-23 gene of CRAB was established in this research was simple ,fast,sensitive and specific. Therefore,it is especially suitable wider use at the grass-roots unit,and it is of great significance for selecting reasonable choice of antibiotics by clinical doctor.

AIM　The purpose is to construct D-hydantoinase genetic engineering strain for the purpose of the industrial production of D-p-hydroxyphenylglycine. METHODS　D-hydantoinase gene was created from Pseudomonas putida 9801 by PCR technique and inserted into pMD18-T vector. The recombinant plasmid was transformed into several Escherichia coli strains. The positive transformants with D-hydantoinase activity were obtained by the two step screening, digoxigenin DNA labeling in situ hybridization and D-hydantoinase activity assay. RESULTS　The D-hydantoinase activity of the genetic engineering strain E.coli BL21/pMD-dht was 1700 U*L-1 and increased as high as 8 times compared with those of wild-type strain Pseudomonas putida 9801. The subunit molecular weight of recombinant D-hydantoinase was about 53 kDa measured by SDS-PAGE. The amount of the recombinant D-hydantoinase was about 20 percent of total bacterial soluble proteins. CONCLUSION　The genetic engineering strain E.coli BL21/pMD-dht possesses the initial industrial production prospects.

Objective To analyze on the efficacy and toxicity of MAAE (MIT ,Ara-C,AMSA,VP16)regimens on treating refractory and relapsed acute leukemia in adult patients. Methods MAAE (MIT, Ara-C,AMSA, VP16) regimen, which consisted of MIT 10mg/d (d1～3), intravenousdrop, Ara-C 200mg/d (d1～7),intravenousdrop, AMSA 75 mg/d (d1～3), intravenousdrop VP16 100 mg/d(d1～4), intravenousdrop were used to treat 25 cases of adults with refractory and relapsed acute leukemia (AL). G-CSF 5 μg/kg were used every day when WBC＜0.5×109/L. Results In the 25 cases with refractory and relapsed acute leukemia, 14 cases (56 %) reached complete remission, 5 patients(20 %) reached partial remission, the total effective rate was 76 %. Conclusion MAAE regimen was a very effective alternative treatment for CR induction in adult patients with refractory and relapsed AL and low toxicity.