Objective To study the effects of antisense oligodeoxynucleotides(ODN) of hEST2 (AODN) on telomerase activity and proliferation in ovarian cancer cell lines SKOV3 and COC1 Methods Antisense and sense human telomerse catalytic sub unit (hEST2) phosphorothioate (SODN)and random ODN were designed, synthesized and transfected into SKOV3 and COC1 cells by lipofectamine The expression of hEST2 mRNA and telomerase activity in SKOV3 and COC1 were tested by reverse transcription polymerase chain reaction and telomeric repeat amplification protocol before and after transfection The proliferation and growth in SKOV3 and COC1 were also investigated by methyl thiazolyl tetrazolium and growth curve before and after transfection Results AODN could down regulate the expression of hEST2 mRNA, inhibit telomerase activity and proliferation of ovarian cell lines The efficiency depends on dose and period of administration At 48 h, 30 ?mol/L AODN had the highest activity The expression of hEST2 mRNA were declined 54 6% and 44 6% in SKOV3 and COC1 respectively And also the inhibition of telomerase activity were 47 9% and 42 7% respectively in the two cell lines Conclusions AODN of hEST2 clearly inhibited the proliferation of ovarian cancer cell lines hEST2 may thus be a new target of gene therapy in ovarian carcinoma

Objective:To research the value of diagnosis of traumatic rib fractures by multislice CT VRT and DR plain film. Methods: Seventy-two cases of traumatic rib fracture patients were diagnosed by DR film and multislice CT VRT. Results:Multiple rib fractures than single, most of them occurred in the 4-10 ribs and axillary segment, 97.2%of 16-slice spiral CT three-dimensional reconstruction of patients with rib fracture diagnosis rate significantly higher than DR plain film diagnosis rate 80.3%(x2=19.15, P<0.01), DR plain film missed rib fractures are mainly located in the costal cartilage (58.1%), 16-slice spiral CT reconstruction is still found 19 other fractures and lung complications 16cases. Conclusion:16-slice CT the thin layer VRT diagnosis of rib fractures greatly improves the diagnostic accuracy.

Objective To determine the threshold of stroke volume variation (SVV) in determining the volume expansion responsiveness during fluid therapy in patients ventilated with different tidal volumes. Methods Fifty ASA Ⅰ or Ⅱ patients aged 20-75 yr undergoing elective gastrointestinal surgery under general anesthesia were randomly divided into 2 tidal volume groups (n = 25 each):group Ⅰ VT 8 ml/kg (group V1) and group ⅡVT 10 ml/kg (group V2). Radial artery was cannulated and connected to Vigelo monitor for continuous monitoring of cardiac index (CI), stroke volume index (SVI), systemic vascular resistance index (SVRI) and SVV. Internal jugular vein was cannulated for CVP monitoring. Anesthesia was induced with milazolam, propofol, fentanyl and rocuronium and maintained with intravenous propofol and remifentanil infusion. BIS was maintained at 40-50 during anesthesia. The patients were intubatel and mechanically ventilated (VT 8/10 ml/kg, RR 8-12 bpm, oxygen flow 2 L/min). 6％ HES 130/0.4 7 ml/kg was infused iv at a rate of 0.4 ml·kg-1 ·min-1 after induction of anesthesia. MAP, HR, CVP, CI, SVV, SVI and SVRI were recorded before and at 3 min after fluid therapy. The changing rate of SVV (△SVV) and CI (△CI) were calculated. The criterion for effective volume expansion was △CI 15%. The ROC curve for SVV in determring the volume expansion responsiveness was plotted and the diagnostic threshold was determined. Results ROC curve showed that the diagnostic threshold of SVV was 10.5 % in group V1 and 13.5% in group V2. The sensitivity and specificity in determining effective volume expansion were 93.3 % and 75.0 % in group V1 and 87.5 % and 85.7 % in group V2 respectively. The area under the curve for SVV and 95% confidence interval (CI) were 0.946 (0.860-1.031) in group V1 and 0.951 (0.868-1.034) in group V2. △SVV was negatively correlated with △CI in group V1 (=0.553) and V2 (= 0.602). Conclusion The threshold of SVV in determining the volume expansion responsiveness during fluid therapy is 10.5% and 13.5% in mechanically ventilated patients with tidal volume of 8 and 10 ml/kg respectively.

This paper introduced multiple flexible teaching methods in medical immunology based on its characteristics including paying attention to introductory class,activating class atmosphere,integrating multiple teaching form.Results showed that these methods stimulating interests of the students,improving their comprehensive quality and ability of innovation,so teaching effect can be improved accordingly.

Objective To determine the diagnostic value of CT in pulmonary tuberculosis. Methods Chest PA & LAT X-ray and CT film image of 40 pulmonary tuberculosis patients with complete information were collected and analyzed. Results (1)Most of intrapulmonary lesions located in superior lobe apicoposterior segment and lower lobe dorsal segment,next ones located in superior lobe anterior segment and lower lobe basal segment. (2)The show rate of the lesions on chest CT films was significantly higher than that of X-ray films. (3)The show rates of focal calcification, inner-mediastinum lymph node enlargement and inner-mediastinum lymph node calcification in chest CT films were significantly higher than that of X-ray films. Conclusion Image of chest CT can provide valuable evidence for diagnosis of pulmonary tuberculosis.

To improve and optimize marine antimicrobial peptide R-1 production by a newly isolated Brevibacillus laterosporus Lh-1, Plackett-Burman (PB) design and response surface methodology (RSM) using central composite design was adopted in culture conditions. MINITAB 15.0 was used for planning the experiments, data analysis, contour diagrams and response optimizations. In this study, PB design was undertaken to evaluate the effects of the fifteen factors. By the statistical regression analysis, the significant factors affecting the novel antimicrobial peptide R-1 in submerged fermentation by Br. laterosporus Lh-1 were determined as follows: glucose, peptone and CaCl2. Then a RSM was used to optimize the above critical internal factors, and the optical concentration of the variables were deter-mined as: 15.72 g/L glucose, 6.01 g/L peptone and 3.29 g/L CaCl2. The content of R-1 was increased from 82.15 kU/mL to 116.27 kU/mL.

Objective To investigate the relationship between serum adiponectin and metabolic syndrome(MS) in children and adolescents with obesity and nonalcoholic fatty liver disease(NAFLD).Methods Four elementary schools and 4 middle schools were selected from Haidian district in Beijing with representative cluster sampling.Two hundred and eighty obese children(obese group),65 obese children with NAFLD(NAFLD group) and 264 normal weight children(healthy control group) aged 7 to 18 years were recruited from the 8 schools with uncompletely randomized sampling.Data including questionnaire,anthropometric measurements,B type ultrasonographic examination for liver were collected and fasting blood laboratory assay were determined.Variables including triglyceride(TG),adiponectin,alanine aminotransferase(ALT) and aspartate aminotransferase(AST) were skewed distribution and natural logarithmical transformations were performed.Chi-square test for category and multiple binary Logistic regression analysis were used to statistical analysis.Results Body mass index(BMI) and waist circumference(WC) in obese group and NAFLD group were higher than those in healthy control group.All the chi-square tests for trend among the 3 groups were statistically significant(P

Aim To observe the effect of a treatment proposal named “Golden Triangle” ( Atorvastatin, Tongxinluo,and Aspirin) on the vasa vasorum angio-genesis of early atherosclerosis lesions in rabbits carotid artery. Method Seventy-two healthy New Zealand rabbits with half males and half females were divided into 6 groups randomly ( n =12 ):control group, model group, Tongxinluo group ( TXL ) , atorvastatin group ( ATO ) , aspirin group ( ASP ) , golden triangle group ( ATS) . The control group was fed with common feed-stuff, and all the other groups′ right carotid arteries were equipped with the silicone tube,and were then fed with fatty feedstuff. The Tongxinluo group, the Atorvas-tatin group and the Aspirin group were given suspen-sion of Tongxinluo supermicro powder(0. 3 g·kg-1 · d-1 ) , Atorvastatin ( 2. 5 mg · kg-1 · d-1 ) and Aspirin (12 mg·kg-1·d-1),the golden triangle group were given suspension of Tongxinluo supermicropowder (0. 3g·kg-1 ·d-1),atorvastatin(2. 5 mg·kg-1 · d-1 ) and Aspirin ( 12 mg · kg-1 · d-1 ) . All the groups were fed with medicine for 4 weeks. Tissue slice of carotid artery was stained with HE and observed un-der light microscope. The change of blood liquid was detected by biochemical assay. Immunohistochemical staining was used to detect the protein expression of CD34 around the carotid artery adventitia. Color micro-sphere method was used to detect the blood flow vol-ume change of the cartoid artery microvascular. VEFG, VEGFR-2 gene and protein expression in the cartoid artery were detected by Real-time PCR and Western Blot. Result Compared with the control group,the content of VEGF, VEGFR-2 gene and pro-tein expression and the microvascular blood flow vol-ume of cartoid artery microvascular in the model were significantly increased ( P <0. 01 ) . But those in each drug group were lighter than those in the model group (P<0. 01,P <0. 05). In the ATS group,the content of VEGF, VEGFR-2 gene and protein expression and the microvascular blood flow volume of cartoid artery microvascular were lower than those in the TXL, ATO and ASP group ( P <0. 01 , P <0. 05 ) . Compared with the ASP group,the content of VEGFR-2 protein expres-sion was significantly decreased(P<0. 01)in the TXL and ATO group. VEGF,VEGFR-2 gene and protein ex-pression in different subgroups showed no significant difference( P >0. 05 ) . The content of CD34 was de-creased in TongxinLuo group,atorvastatin group,aspirin group and ATS group. Conclusion The ATS project can reduce the expression of VEGF,VEGFR-2, inhibit the vasa vasorum angiogenesis and decrease proinflam-matory substances in the tunica media and intima of vascular wall. It plays an important role in intervening in the process of AS.

Objective To develop a simple microfluidic chip technology for analyzing the electrotaxis of cancer cells . Methods The basic structure of the proposed microfluidic electrotaxis chip included a straight microchannel and liquid storage pools located on both sides of the microchannel .Two platinum electrodes were inserted into the liquid pools to create a controllable direct current ( DC ) field in the microchannel .The distribution and strength of the DC field in the microchannel was analyzed by the finite element analysis software COMSOL multiphysics and experiment tests .Finally, the electrotactic behavior of the rhabdomyosarcoma RD cells in the DC field of different strength was characterized using the accumulated distance, average velocity, x forward migration index ( xFMI) and y forward migration index ( yFMI) as quantitative parameters.Results The results of element analysis and experiments showed that the structure of the designed microfluidic electrotaxis chip was able to guarantee a uniform and strength-controllable DC field in the microchannel .The experiment of cell electrotaxis showed that the RD cells migrated toward the anode of the DC field .Meanwhile , the values of xFMI and accumulated distance for RD cells increased with the enlargement of the DC field , with the strength ranging from 188 to 1320 V/m.Conclusion The microfluidic chip technology developed in this paper for assaying the electrotaxis of cancer cells is simple and easily implementable , and it can be used for studies of the electrotactic behavior and underlying mechanisms of various cancer cells and normal cells in the future .

Objective To investigate the effects of different target effect-site concentrations (Ces) of remifentanil on the sedative effect of propofol. Methods Fifty ASA Ⅰ or Ⅱ patients aged 20-55 yr weighing 48-86 kg with body mass index ＜ 30 kg/m2 were randomly divided into 5 groups ( n = 10 each) . Anesthesia was induced with TCI of remifentanil (Ce = 0, 2, 4, 6 and 8 ng/ml in groups R0-R4 respectively) and propofol. The initial Ce of propofol was 2.0 μg/ml in the 5 groups, and then the Ce of propofol increased by 0.5 μg/ml every 1 min until BIS value decreased to 50. BIS value and Ce of propofol were recorded as the patient lost consciousness. The effect-site concentration and consumption of propofol and the time required were recorded when BIS value decreased to 50.Results BIS value was significantly increased, while the effect-site concentration of propofol was significantly decreased as the patient lost consciousness, and the effect-site concentration and consumption of propofol were significantly decreased and the time required was shortened when BIS value decreased to 50 in R2-R4 groups compared with group R0 (P ＜ 0.05 or 0.01) . Conclusion The sedative effect of propofol can be enhanced when the Ce of remifentanil reaches 4 ng/ml, and the effects are comparable when the Ce of remifentanil reaches 4, 6 and 8 ng/ml.