Objective To understand Present condition of separation of Pseudomonas aeruginosa and its drug-resistant tendercy in patients with lower respiratory trace infection in our hospital.Methods To make a statistical analysis of durg sensitive tests of 182 strains of Pseudomonas aeruginosa form thos samples of patients with lower respiratory trace infection detected from October 2005 to August 2007.Results 1031 strains of pathogenic bacteria were separated from 1409 sample of lower respiratory trace tract,and pseudomonas aeruginosa 182 strains and 17.65% of them are PA,results of drug sensitive test indicate that Paare resistant to gentamycin CN SMZ CTX GAT etc.Conclusion The infection and drug resistance of pare wery severe now,it isbeneficial to rational use of drugs to keep abreast of current drug-resistant condition.

Objective To compare the effect of the conventional teaching programs and logical thinking ability training program of ultrasound medical profession. Methods 85 ultrasound medical junior students were randomly divided into control group (n=40) and experimental group (n=45) re-spectively. Experimental group was provided with logical thinking ability cultivation to develop logical thinking of students, and the key was to enable students to find the key problems of ultrasound in the diagnosis of the disease and put forward measures to solve them and control group carried on the con-ventional teaching. Teaching effect, the medical record analysis test scores, clinical skills examination and questionnaire score were compared between the two groups, using SPSS 18.0 software for statisti-cal analysis of the data. Results (1)Students in the experimental group thought that compared with the control group, their interest in learning improved, the ability of clinical analysis enhanced, inter-action between teachers and students and learning efficiency and self-study ability increased and the difference has statistical significance. (2)The experimental group's scores of medical records analysis, the assessment scores of clinical skills and the student questionnaire score were higher than those of the control group and the two groups' score difference was statistically significant. Conclusion To strengthen the training of medical ultrasound medical imaging direction students' logical thinking ability can significantly improve the quality of teaching, and it is worthy to be promoted and applied.

Objective To explore the relationship between subclinical hypercortisolism (SH) and osteoprosis.Methods MEDLINE,BIOSIS Previews,High Wire Wanfang Database,and Vip Database were retrieved for articles about the relations of SH and osteoporosis.Searches were limited to Chinese/English-language publications.The clinical outcomes evaluated in this study included bone mineral density,biochemical markers of bone turnover,prevalence of osteoporosis,and incidence of fracture.Meta-analysis was carried out by RevMan5 among articles suitable for the inclusion and exclusion criteria.Results Fifteen studies were included,containing 6retrospective studies,6 prospective studies,and 3 intervention studies.Retrospective studies suggested that bone mineral density level in subclinical hypercortisolism group (SH + group) was significantly lower than that in the nonsubclinical hypercortisolism group (SH-group),meta-analysis of prospective studies showed that the level of bone mineral density at lumbar spine and femoral neck was significantly lower in SH+ group than that in the SH-group(all P＜0.01).Both retrospective studies and prospective studies showed no significant difference between the biochemical markers of bone turnover in both SH+ and SH-groups.Data from intervention studies showed that the prognosis in SH patients with surgical intervention was not improved.Conclusions SH reduces bone mineral density at lumbar spine and femoral neck,and increases the prevalence of osteoporosis and incidence of fracture.Whether surgical intervention is beneficial in SH patients remains uncertain.

AIM:To investigate the roles of maspin in the biological behaviors of non-small-cell lung cancer A549 cells.METHODS:Full-length coding region of maspin was amplified by PCR from human normal breast tissue and cloned into MSCV vector .Virus supernatants was produced by Phoenix A packaging system , and target cell line was infec-ted with the virus supernatants .The transfected cells were screened with puromycin .The cell line with maspin over-expres-sion was identified by real-time PCR and Western blot.Cell growth, migration and invasion were investigated by xCelli-gence system .RESULTS:Maspin over-expression vector was successfully constructed .The cell line with maspin over-ex-pression was established .No difference of the growth between A 549-control cells and A549-maspin cells was observed .The migration and invasion were quite different between A 549-control cells and A549-maspin cells.The expression level of inte-grin β1 in A549-maspin cells was decreased compared with A 549-control cells .CONCLUSION:Maspin has no effect on the growth of A549 cells.Maspin suppresses the migration and invasion of A 549 cells, in which integrin β1 is involved.

Background and purpose:miR-17-92 gene cluster overexpression has been observed in various cancers, such as lung cancer, liver cancer, gastric cancer and prostate cancer. In this study, we established the stable cell line overexpressingmiR-17-92 to explore the inlfuence ofmiR-17-92 on the migration, invasion abilities and cisplatin resistance of the prostate cancer DU145 cells.Methods:miR-17-92 overexpression vectors were constructed. DU145 cells were infected with the viral supernatants produced by Phoenix A packaging system. Real-time lfuorescent quanti-tative polymerase chain reaction (RTFQ-PCR) was conducted to detect the expression level of miR-17-92 in the cells. The migration and invasion abilities were measured by a real-time xCELLigence system. The scratch healing assay was carried out to investigate the migration abilities. The expression of integrin β1 was detected by Western blot, and the activities of matrix metalloprotein-2 (MMP-2) and matrix metalloprotein-9 (MMP-9) were measured by gelatin zymography experiment. The cell growth of the two cell lines after the treatment of cisplatin was detected by a real-time xCELLigence system. The mRNA expression ofERCC1 was measured by RTFQ-PCR. Western blot was conducted to investigate the protein expressions of ERCC1, ERK1/2 and pERK1/2.Results:DU145-miR-17-92 cells migrated faster than DU145-control cells during the 24 h continuous monitoring (P<0.01). The scratch healing assay indicated that DU145-miR-17-92 cells migrated from the edge towards the scratch center faster than DU145-control cells. DU145-miR-17-92 cells invaded through matrigel markedly faster than DU145-control cells (P<0.01). The protein expression level of integrin β1 and the MMP-9 activities in DU145-miR-17-92 cells were increased than those in DU145-control cells. After the treatment of cisplatin, DU145-miR-17-92 cells grew faster than DU145-control cells, presenting cisplatin resistance (P<0.01). The phosphorylation of ERK1/2 in DU145-miR-17-92 cells was constantly at a high level regard-less of the treatment of cisplatin. Compared with DU145-control cells, the expression of drug resistance-related gene ERCC1 was dramatically increased in DU145-miR-17-92 cells after the treatment of cisplatin.Conclusion:miR-17-92 overexpression increases the migration and invasion abilities of the prostate cancer DU145 cells, which is associated with the upregulated expression of integrin β1 and the increased activity of MMP-9. Besides,miR-17-92 overexpression enhances the cisplatin resistance of DU145, which is correlated with the increased phosphorylation level of ERK and the upregulated expression of ERCC1 at both the mRNA and protein levels.

This study aimed to investigate the immune adjuvant effect and mechanism induced by chitosan nanoparticles carrying pJME/GM-CSF. In this study, plasmid DNA (pJME/GM-CSF) was encapsulated in chitosan to prepare chitosan-pJME/GM-CSF nanoparticles using a complex coacervation process. Immunohistochemistry was used to detect the type of infiltrating cells at the site of intramuscular injection. The phenotype and functional changes of splenic DCs were measured by flow cytometry after different immunogens were injected intramuscularly. The killing activity of CTLs was assessed using the lactate dehydrogenase (LDH) release assay. The preparation of chitosan-pJME/GM-CSF nanoparticles matched the expected theoretical results. Our results also found that, after pJME/GM-CSF injection, the incoming cells were a mixture of macrophages, neutrophils, and immature DCs. Meanwhile, pJME/GM-CSF increased the expression of MHC class II molecules on splenic DCs, and enhanced their Ag capture and presentation functions. Cell-mediated immunity was induced by the vaccine. Furthermore, chitosan-pJME/GM-CSF nanoparticles outperformed the administration of standard pJME/GM-CSF in terms of DC recruitment, antigen processing and presentation, and vaccine enhancement. These findings reveal that chitosan could be used as delivery vector for DNA vaccine intramuscular immunizations, and enhance pJME/GM-CSF-induced cellular immune responses.
Adjuvants, Immunologic ; administration & dosage ; Animals ; Chitosan ; administration & dosage ; immunology ; Dendritic Cells ; immunology ; virology ; Encephalitis Virus, Japanese ; genetics ; immunology ; Encephalitis, Japanese ; immunology ; prevention & control ; virology ; Female ; Granulocyte-Macrophage Colony-Stimulating Factor ; administration & dosage ; genetics ; immunology ; Humans ; Immunity, Cellular ; Japanese Encephalitis Vaccines ; administration & dosage ; genetics ; immunology ; Mice ; Mice, Inbred BALB C ; Nanoparticles ; administration & dosage ; Spleen ; immunology ; T-Lymphocytes, Cytotoxic ; immunology ; virology ; Vaccines, DNA ; administration & dosage ; genetics ; immunology

Objective:To identify the tannin-related constituents in the extracts of pomegranate peel by HPLC-ESI-MS. Methods:The separation was performed on a Kromasil C18 column (250 mm × 4. 6 mm,5 μm) with the mobile phase of water and acetonitrile. The flow rate was maintained at 1. 0 ml·min-1 and the detection wavelength was set at 256nm. The samples were analyzed in negative modes. Results:Five tannin-related constituents including gallic acid, punicalin,punicalagin,corilagin and ellagic acid were identified from the extracts of pomegranate peel. Conclusion:The new method is accurate and rapid. It can be used to identify the tannin-related constituents in pomegranate peel and provide new ideas for the research of active components in traditional Chinese medicine as well.

Objective To study the clinical value of detection of peripheral blood natural killer(NK) cells subsets in patients with malignant hematological diseases.Methods A total of 100 patients with malignant blood disease were enrolled from March 2014 to April 2016 as the observation group,including 50 cases in acute stage and 50 cases in mild stage.At the same time,100 health subjects were enrolled as the control group.The number of NK cells in peripheral blood and the changes of subgroups were compared.Results The number of NK cells in the different groups were compared,the absolute numbers and relative numbers of NK cells in the acute phase of leukemia and lymphoma were much lower than those in the control group(P<0.05).While the absolute number and relative number of NK cells in mild stage of leukemia and lymphoma were higher than that in acute phase(P<0.05).After treatment,the absolute number and relative number of NK cells in patients with leukemia and lymphoma were higher than before treatment(P<0.05).Before treatment,levels of CD56bright and CD56dim in patients with leukemia and lymphoma were statistically different with those of control group(P<0.05).After treatment,CD56bright and CD56dim levels were significantly improved in both groups(P<0.05).Conclusion The number of peripheral blood NK cells in patients with hematological malignancies could be reduced,and the cells function might be compromised.Detection of NK cell subsets could be with guiding significance in the treatment of malignant hematologic disease.

0.05).Conclusion MSCT perfusion imaging is of significant value in diagnosing and differentiating malignant SPN from benign SPN.

OBJECTIVE To approach the distribution characteristic and drug resistance status in pathogens from infected urinary tract in Jingshan County and offer the scientific evidence for clinically reasonable use of antibiotics.METHODS Totally 218 strains of pathogens isolated from urinary tract were identified by routine methods according to the National Clinical Laboratory Operation Rules.Drug susceptibility testing was performed by K-B methods recommended by CLSI.RESULTS Among 218 strains of pathogens from infected urinary tract,Escherichia coli accounted for 61.0%,ranking the first and enterococci ranked the second,accounted for 11.5%.Except for 100% sensitivity to vancomycin and teicoplanin in Gram-positive bacteria and to imipenem and meropenem in Gram-negative bacteria,the pathogens from infected urinary tract had been resistant to commonly used antibiotics in some degrees.The detection rate of extended-spectrum beta-lactamases(ESBLs) producers was 32.9%.CONCLUSIONS The drug resistance in pathogens from infected urinary tract is on the rise.We should strengthen monitoring and controlling of it.