Objective To optimize multiplicity of infection ( MOI) and antibiotics ( blasticidin) concentration selecting BSD gene in construction of monoclonal stable cell line by lentivirus vector-mediated RNA interence silenced gene SGMS2.Methods The INS-1 cells were transfected by fluorescence labeled negative control SGMS2-siRNA lentivirus at MOI of 0, 10, 30, 60 and 120 TU number/cell.The cells were photographed under fluorescent microscopy after 72 h cultivation, then fluorescence ratio and apoptosis rate were calculated to determine optimal MOI.The INS-1 cells were treated by blasticidin with different concentrations of 0, 1, 2, and 3 μg/mL, and the apoptosis rate was observed to acquire optimal concentration of antibiotics.The INS-1 cells were transfected by negative control SGMS2-siRNA lentivirus and SGMS2-siRNA lentivirus (virus titer:1 ×108TU/mL) at optimal MOI and positive-transfected cells were selected by blasticidin at optimal concentration, then mixed cell lines were acquired.The monoclonal cell line was constructed at fluorescence ratio of 90%.Results The optimal MOI was 60 with 100% fluorescence ratio, less than 0.5% apoptosis rate and keep original cellular morphology.The optimal concentration of blasticidin was 2 μg/mL with cell adherence disappear and all cells apoptosis.The Ct value of INS-1-SEMS2 cells detected at the second time was 28.21, which was greater than 27.58 at the first time.The interfering efficiency of siRNA was 77.78% which indicated a successful expression of siRNA and construction of monoclonal stable cell line ( INS-1-SEMS2 ).Conclusion The monoclonal stable cell line was successfully constructed by lentivirus vector-mediated RNA interence silenced gene SGMS2.

Objective To investigate the relationship between the p27~(kip1) expression and the change of radiosensitivity of esophageal cancer cells.Methods Radio-resistant cells (EC9706R) were gradually isolated by means of repeated gamma-ray irradiation (6 000 cGy in total) upon human squamous esophageal carcinoma cells (EC9706).The radiosensitivity of these two types of cells was measured by standard colony formation assays,their cell cycle distribution analyzed by flow cytometry respectively,and the p27~(kip1) expression detected by immunocytochemistry.Results As compared with their parent cells,the isolated human squamous esophageal carcinoma cells(EC9706) showed clearly greater radio-resistance(for EC9706R,SF_2=65.71%,D_0=2.20 Gy,D_q=1.61 Gy,N=2.07,and for EC9706,SF_2=46.72％,D_0=1.61 Gy,D_q=0.99 Gy,N=1.85;SF_2,D_0,Dq and N were all higher).As to the cell cycle distribution,the population of G_1 phase cells in EC9706R cells was significantly decreased,but the proportion of S phase cells was significantly increased as compared with the parent cells.Immunocytochemistry revealed that the p27~(kip1) expression of EC9706R cells was clearly lower than that of EC9706 cells.Conclusion Cell phase change due to the decrease of p27~(kip1) expression may be one of the mechanisms of the generation of radio-resistance in esophageal cancer cells.

1cm)(P=0.0000)and the type of adjuvant chemotherapy implemented (non-standard chemotherapy versus standard chemotherapy)( P=0.0028). Among them tumor size was exclusively an independent factor.Conclusions:Histology、FIGO stage、residual tumor after surgery and the type of adjuvant chemotherapy were independent factors associated with recurrence in MOGCT .For those patients with high risks of recurrence, full dose and cycles of standard BEP/PVB regimen should be used.

Objective To explore the expression of estrogen receptor(ER) and progesterone receptor(PR) in gestational trophoblastic tumor(GTT) and their significance.Methods The expression of ER and PR in 34 cases of GTT was detected by immunohistochemical method;20 cases of normal villi and 30 cases of hydatiform mole served as controls.Results The positive expression rate of ER in normal villi,hydatiform mole and GTT was 85.00%,83.33% and 44.12%,respectively,and had positive correlation with the malignance degree of GTT.The positive expression rate of PR in normal villi,hydatiform mole and GTT was little.The expression of ER was closely related to these clinicopathological features of GTT(P

Objective To investigate the changes and its significance of expression of platelet CD62p,CD42b and the levels of plasma TXB2,6-keto-PGFla and vWF in patients with intracerebral hemorrhage.Methods 46 patients with intracerebral hemorrhage were included as the intracerebral hemorrhage group,while 20 patients with hypertension were served as the control group.Platelet CD62p and CD42b were measured by flow cytometry,and plasma TXB2,6-keto-PGF1a and vWF were measured by ELISA at less than 3 day,1 and 2 weeks after onset.The analysis of dependablit were made between the expression of platelet CD62p,CD42b and the level of plasma vWF in patients with intracerebral hemorrhage.Results At less than 3 day,1 and 2 weeks after onset,the expression of platelet CD62p,levels of plasma TXB2,vWF and TXB2/6-keto-PGFla(T/K)in patients with intracerebral hemorrhage were significantly higher than those in the control group(all P

Acute pancreatitis,a multiple system disease was associated with distant organs injury such as the liver,lung and kidney,etc.Acute renal failure is one of the major death causes in severe acute pancreatitis.Renal injury in acute pancreatitis and its pathogenesis was reviewed to further understand the mechanisms of systemic inflammatory response and multiple organ failure

Based on the results of oral glucose tolerance test( OGTT )and the levels of 1-h plasma glucose ( 1 hPG),793 subjects were classified into three groups:583 with NGTN ( normal 1 hPG in OGTT),127 with NGT1 H( higher 1 hPG in OGTT) and 83 with IGT( impaired glucose tolerance).NGT1H group had large waist circumference,higher body mass index,fasting plasma glucose( FPG),triglyceride,and lower high density lipoprotein-cholesterol than those of NGTN group.NGT1 H group had higher homeostasis model assessment insulin index ( 1.2 ± 0.6),lower homeostasis model assessment β3 ( HOMA-β ) (4.5 ± 0.7 ) and insulinogenic index (2.1 ±0.7) than those of NGTN group(0.5 ±0.6,4.8 ±0.7,2.7 ±0.9,respectively,all P ＜0.05 ).HOMA-β of NGT1 H group was higher than that of IGT group(4.5 ±0.7 vs.4.4 ±0.6,P ＜0.05 ).The results indicate that 1 hPG in OGTT may identify a condition of glucose metabolic abnormalities characterized by insulin resistance and reduced β-cell function.

Objective To understand the dynamic change of professional attitude of nursing undergraduates in traditional Chinese medicine universities and the influencing factors from first-year to third-year. Methods From December 2012 to July 2015,“Scale for nurse′s professional attitude”was used to evaluate the professional attitude of full-time nursing undergraduates in two traditional Chinese medicine universities in China in every 18th teaching week of a semester (6 times). Personal information sheet, Eysenck Personality Questionnaire (EPQ) and Social Support Rating Scale (SSRS) were used to screen the influencing factor of professional attitude of nursing undergraduates. Results Mean scores of“Scale for nurse′s professional attitude”in 289 nursing undergraduates was higher than 4.5 and appeared an increasing trend. There were significant differences in professional attitude between first-year and third-year nursing undergraduates. The influencing factors of nursing undergraduates′professional attitude were different. In first-year, the factors were EPQ-N, birthplace, EPQ-P, household registration, parent′s marital status. In second-year, they were times of social practice, mother′s vocation, EPQ-E, EPQ-P, satisfaction on family income. In third-year, they were SSRS scores, EPQ-P, whether first choice being nurse or not. Conclusions Professional attitude of 289 nursing undergraduates is positive and appears an increasing trend. The influencing factors of nursing undergraduates′professional attitude are different and EPQ-P has constant influence on their professional attitude.

With the development of medical education,the traditional cell biology teaching modes and methods need constant adjustment to adapt to the current teaching.In view of the present high-speed development of cell biology,we seriously picked some representative themes to carry out thematic teaching.Students were encouraged to read some references about the corresponding content and thought primarily before the class.After the lesson,the teacher guided students to discuss and find the answers to the questions they asked before.Participation in class discussion and homework completion accounted for 10％ of the final assessment results.The thematic teaching helped to optimize classical teaching contents and frontier progress.This teaching mode not only stimulated learning interest but also fully exercised learning ability.

By means of a demand characteristic analysis of high-value consumables in surgical operations,this article established the agile supply chain model of those consumables,and studied its management model as well as the running mechanism based on a series of advanced information technologies,such as case knowledge base,virtual storage,dynamic monitoring,etc.With such a system in place,the hospital realized on-demand and zero-inventory management of high-value consumables to satisfy the dynamic demand for surgical operations.