Objective To investigate the effect of umbilical cord serum(UCS)during induction of dendritic cells derived from umbilical cord blood. Methods Umbilical cord blood was collected aseptically and interface cells were collected with density gradient centrifugation method,CD34 +cells were purified and collected with Mini-MACS technique. Pro-DC were obtained and were divided into 3 groups:①cultured in RPMI-1640 medium with 10%UCS and cytokine,②cultured in RPMI-1640 medium with 10%FCS and cytokine③cultured in RPMI-1640 medium with 10%FCS .Interleukin-4(IL-4),granulocyte-macrophage colony-stimulating factor(GM-CSF)and tumor necrosis factor(TNF-a)were used in the first 2 groups, but not in control group (group 3). Some cells were collected on the 8th d for phenotypes analysis. Results The expression of CD80 ,CD54 and HLA-DR on the surface of DC cultured in UCS medium had no significant difference compared with that of DC cultured in FCS medium. The expression of surface molecules in UCS-DC group and FCS-DC group were both enhanced compared with the control group. Conclusion Mature DC could be induced from pro-DC derived from umbilical cord blood when cultured with UCS instead of FCS. That provides a new approach for the clinical application of DC.

Due to their small molecular weight,strong penetrating power,wide target range,strong ability of binding targets,stable quality,little immunogenicity,easiness to be synthesized and modified,and functional roles in molecular recognition and signal transduction,nucleic acid aptamers are now used as tools for molecular recognition and drugs delivery for the diagnosis and treatment of many diseases.

OBJECTIVE To study the expressions of heat shock protein 70 and human papillomavirus16E7 protein in human laryngeal squamous cell carcinoma, and their relationship in the genesis of human laryngeal squamous cell carcinoma. METHODS The expressions of HSP70 and HPV16E7 protein were detected by the immunohistochemical method in 78 specimens with laryngeal squamous cell carcinoma, 24 specimens with vocal cord polyps and 10 specimens of normal laryngeal tissues. RESULTS In human laryngeal squamous cell carcinoma, vocal cord polyps and normal laryngeal tissues, the positive expression rates of HSP70 were 69.2 % , 8.3 % and 0 % respectively, with those of HPV16E7 protein being 43.6 % 4.2% and 0 % respectively. There was a significant difference of the expression rate of HSP70 or HPV16E7 protein between the laryngeal squamous cell carcinoma and the vocal cord polyps(P

OBJECTIVE To construct a prokaryotic expression plasmid encoding HPV16E7-HSP70 fusion gene for further study on the immunity of HPV16E7- HSP70 fusion protein against laryngeal carcinoma. METHODS HPV16E7 was PCR-amplified,digested by NheI and SacI,and ligated into pET28a. HSP70 was cloned into pGEMTeasy,then recut from the vector by SalI and NotI and ligated into pET28a-HPV16E7. PCR amplification, restrict enzyme digestion, DNA sequencing, IPTG induction and Western Blot were used to identify the recombinant plasmid. RESULTS Double digestion and PCR amplification of the recombinant plas- mid have shown that the size of the inserted fragment is as expected. Sequence analysis has demonstrated that the inserted fragment encodes for the HPV16E7- HSP70 fusion gene. IPTG induction and Western Blot have shown that the fusion protein is expressed suc- cessfully in the prokaryotic expression plasmid. CONCLUSION The recombinant prokaryotic expression plasmid pET28a-HPV16E7-HSP70 has been con- structed successfully.

AIM: To observe the effects of toddalia asiatica aqueous extract (Fei Long No 1, F01) on cardiac function and hemodynamics of acute myocardial ischemia in the animal model. METHODS: High positioned double-ligation of the anterior descending left coronary artery induced acute myocardial ischemia in New Zealand rabbits. F01 268 mg/kg were ip into the acute myocardial ischemic model, Cardiac function and hemodynamic measurements were performed before and after ligation and administration of F01. t -test paired was used for statistical analysis. RESULTS: After ligation all indices was reduced significantly except that LVEDP was markedly increased and t-dp/dt max had little change. After administration of F01 changes of most indices were reversed, and returned to or were close to the baseline. 1.5 h after administration of F01 action was more markedly. But the indices of left ventricle work and consumption of oxygen ( HR, TTI and TTI?HR) were reducing continuously. CONCLUSION: F01 markedly decreases ventricle work and consumption of oxygen of acute ischemic myocardium, so that the contractility, diastolic function of myocardium and cardial output are improved. These are the mechanism of protective effect on myocardial ischemia.

Objective To investigate publication of papers by nursing staff in a TCM hospital and to find out the problems as well as countermeasures.Method A retrospective analysis about authors,education,academictitle,length of service and age was done to investigate the classes of published papers from 2008 to 2012.Results The academic publication by the nurses from 2008 to 2012 was increased.Among these articles,the TCM nursing techniques took up the largest ratio,which accounted for 29.12%. There were significant differences in ages,length of service and educational background in authors(P<0.05).Conclusions Nurses’ awareness and capabilities of publishing academic papers needs enhancement as well as training.It may be significant to strengthen their incentives in scientific research by enforcing encouraging policies.

The enrollment of international medical students has been expanding.How to improve the quality of medical education is a key point.To explore a better way and method to improve the quality of the medical teaching for foreign students in China,the preliminary experi-ences of teaching of Clinical Diagnostics for foreign students are reviewed.

Objective To study the level and influencing factors of sense of coherence (SOC) among elderly patients with Parkinson's disease (PD).Method Totally 118 elderly patients with PD were investigated by a self-designed demographic questionnaire,sense of coherence-13 (SOC-13) and social support rating scale (SSRS),and to explore the level and influencing factors of SOC among the patients.Results The total score of SOC-13 was (52.27±9.30),and it was at a low level.Multiple regression analysis showed that educational level,severity of the disease,family economic status and social support were the influencing factors of SOC.Conclusion SOC of elderly patients with PD is at a low level,which is influenced by individual factors,nurses should take targeted measures to improve the patients' SOC status by the influencing factors.

In order to understand the resistance against common antibiotics in clinic and macrolide antibiotic-resistant mechanism of Streptococcus pneumoniae (S.pneumoniae) isolates in Zhejiang area,both K-B slip method and E-test were applied to determine the sensitivity of 138 S.pneumoniae isolates to nine antibiotics,and the ermB and mefE genes in those isolates which associated with macrolide antibiotics-resistance closely were detected by PCR.Subsequently,correlation among ermB and mefE genes and the erythromycin resistance were analyzed.For these 138 S.pneumoniae isolates,93.5% (129/138) of the strains were resistant to erythromycin,but only 2.9%～4.3% strains were resistant to cefotaxim,cefuroxime,amoxicillin and levofloxacin.The positive rate of ermB gene in the isolates (91.3%,126/138) was significantly higher than that of mefE gene (33.3%,46/138) (P<0.05).Both of these two genes existed in 27.5 % (38/138) of the strains and all of the strains without ermB and mefE genes were sensitive to erythromycin.The erythromycin resistance rate (62.5%) of mefE gene positive strains was remarkably lower than that of the mefE&ermB gene positive strains (100%) and the ermB gene positive strains (97.7%) (P<0.05).All the data mentioned above demonstrated that erythromycin is not an appropriate antibiotic to treat the infectious diseases caused by S.pneumoniae.Moreover,ermB is the predominant erythromycin resistance gene in S.pneumoniae isolates and ermB gene could inspire stronger erythromycin resistance than mefE gene.

Objective To construct a lentiviral vector carrying CRKL gene RNA interfering( RNAi ).Methods The CRKL RNAi was selected and subcloned into the lentiviral vector,pGCL-GFP(including U6 promotor and green fluorescent protein),generating the lentiviral vector LV-shCRKL.The corrected CRKL was confirmed by endoenzyme digestion ,sequencing.Recombinant lentiviruses were produced by 293T cells following the eo-transfection of LV-shCRKL,with the packaging plasmids pHelper1.0 and pHelper2.0.The virus titer was detected by GFP expressions in 293T cells.Results Plasmid LV-shCRKL carried the correct sequence.The recombinant lentiviruse LV-shCRKL could be produced by co-transfection of LV-shCRKL to 293T cells.Conclusion The recombinant lentiviruse vector LV-shCRKL is constructed successful.