Objective To observe the application effect of layered cooperation teaching in clinical teaching in intensive care unit (ICU).Methods The master graduate students who practiced in ICU of Fangcun branch of Guangzhou Provincial Hospital of Traditional Chinese Medicine form September 2013 to July 2014 were divided into two groups according to the rotation cycle.Diagnostic test was conducted to all the above students.The new teaching group (21 people) was determined according to the diagnostic test results and students' majoring to frm study group and the layered cooperation teaching was adopted,while the traditional teaching was used in the traditional clinical education group (19 cases).In the end of the rotation training,a theoretical examination was conducted among the two groups of students,and the questionnaire of teachers' teaching quality was issued.The related data were processed by SPSS 17.0,and the data between groups were compared by t test.Results The examination result in the layered cooperation teaching group (78.35 ± 3.13) were better than those in the traditional clinical education group (70.21 ± 4.58) and the difference was statistically significant (P=0.041).Survey results showed that the new teaching group students' evaluation to teaching content,teaching methods and teaching effectiveness was higher than traditional teaching group,and the score difference was statistically significant (P＜0.05).Conclusion The layered cooperation teaching in the clinical teaching in intensive care unit (ICU) to mobilize the students' subjective initiative,so that students of different knowledge structure can be integrated into the clinical practice of ICU,and enhance their ability of clinical analysis of ICU disease.

Objective To explore the risk factors for intracranial hemorrhage caused by late vitamin K deficiency bleeding(VKDB),in order to prevent and reduce the incidence of intracranial hemorrhage caused by late VKDB.Methods A retrospective analysis of the risk factors of late VKDB and intracranial hemorrhage was applied to 2 groups of patients in PICU and department of neurology of Beijing children's Hospital from Jan.2002 to Dec.2007.In group Ⅰ,there were 90 patients suffering from intracranial hemorrhage caused by late VKDB;while in group Ⅱ,there were 23 patients of late VKDB without intracranial hemorrhage.Within 12 hours of hospitalization,the following 9 items were checked:the cranial CT,blood calcium concentration,liver function,serum sodium,blood glucose,prothrombin time,partial thromboplastin time,fibrinogen concentration,and platelet.Ten possible relevant risk factors of gender,age,birth situation,feeding patterns,recent diarrhea,cytomegalovirus(CMV)infection,hypocalcemia,dysglycemia,hyponatremia,and abnormal liver function were analyzed by the method of non-conditional Logistic regression analysis.Results Statistically significant difference had been found in the 3 factors of hypocalcaemia,recent diarrhea,abnormal liver function(Pa

In this study, the psbA-trnH sequence as DNA barcode was used to evaluate the accuracy and stability for identification pteridophyte medicinal material Pyrrosiae Foliumas from adulterants. Genomic DNA from 106 samples were extracted successfully. The Kimura 2-Parameter (K2P) distances and ML tree were calculated using software MEGA 6.0. The intra-specific genetic distances of 3 original plants were lower than inter-specific genetic distances of adulterants. The ML tree indicated that Pyrrosiae Folium can be distinguished from its adulterants obviously. Therefore, the psbA-trnH sequence as a barcode of the pteridophyte, can accurately and stably distinguish Pyrrosiae Folium from its adulterants.
Base Sequence ; DNA Barcoding, Taxonomic ; methods ; DNA, Ribosomal Spacer ; genetics ; Drug Contamination ; prevention & control ; Drugs, Chinese Herbal ; chemistry ; classification ; Ferns ; classification ; genetics ; Molecular Sequence Data ; Phylogeny ; Plant Proteins ; genetics ; Quality Control

In order to solve the problem of resistance of Pseudomonas aeruginosa to multiple antibiotics, it is an effective way to find inhibitors of P. aeruginosa efflux pump. In this study, 15 new ornithine peptidomimetic derivatives were designed and synthesized by changing the side chain structure of natural amino acids with PAβN, a dipeptide efflux pump inhibitor, and their synergic activity with aztreonam, a monocyclic β-lactam antibiotic, against P. aeruginosa was evaluated. Among them, the representative compound 12b not only enhanced the antibacterial activity of β-lactam antibiotics aztreonam, ceftazidime and meropenem, but also significantly enhanced the antibacterial action of macrolide antibiotics clarithromycin, showing a broad-spectrum synergic sensitization effect. In addition, compound 12b also has a good safety. Preliminary mechanisms suggest that 12b works by directly targeting the efflux transporter MexB. These results provide a new lead compound for the development of a new class of efflux pump inhibitors against P. aeruginosa.

[Objective]To explore the intracellular antimicrobial activities of erythromycin,ciprofloxacin,levofloxacin,moxifloxacin against Legionella pneumophila.[Methods]The minimum inhibition concentration(MIC)of each antibiotic was evaluated by E-test method and microdilution method respectively.The minimal extracellular concentration inhibiting intracellular multiplication(MIEC)of each antibiotic was evaluated by the MTT colorimetric assay system.[Results]The MIC concentration for each drug by E-test method were:erythromycin,0.047 μg/mL;ciprofloxacin,0.38 μg/mL;levofloxacin,0.125 μg/mL;moxifloxacin,0.125 μg/mL,the MIC concentrations for each drug by microdilution method were:erythromycin,0.125 μg/mL;ciprofloxacin,0.03 μg/mL;levofloxacin,0.016 μg/mL;moxifloxacin,0.016 μg/mL.The MIEC concentration for each drug were:erythromycin,0.25 μg/mL;ciprofloxacin,0.016 μg/mL;levofloxacin,0.016 μg/mL;moxifloxacin,0.004 μg/mL.[Conclusions]Fluoroquinolones have superior activity than erythromycin in U937 cells infected with L.pneumophila.Moxifloxacin is the most potent drug among the four tested antimicrobials.Our results indicated that the MTT assay system allows comparative and quantitative evaluations of the intracellular activities of antibiotics against L,pneumophila and efficient processing of a large number of samples.

Acute Disease ; therapy ; Adolescent ; Adult ; Bloodletting ; Child ; Female ; Humans ; Male ; Middle Aged ; Tonsillitis ; therapy ; Young Adult

Chromosome Deletion ; Chromosome Disorders ; diagnosis ; genetics ; therapy ; Chromosomes, Human, Pair 22 ; genetics ; Female ; Humans ; Infant

To study the mechanisms of total flavonoid from Glycyrrhizae Radix et Rhizoma (TFGR) and its ingredient isoliquiritigenin (ISL) on their regulation of M2 phenotype polarization of macrophages. IL-4 (60 μg x L(-1)) induced RAW264.7 cells for 6 h to establish the M2 macrophage model. TFGR and ISL restrained breast cancer cells migration with the aid of M2 macrophages in vitro. TFGR and ISL inhibited gene and protein expression of Arg-1, up-regulated gene of HO-1 and protein expression of iNOS, enhanced the expression of microRNA 155 and its target gene SHIP1, meanwhile down-regulated.the phosphorylation of STAT3 and STAT6. So TFGR and ISL were the bioactive fraction and ingredient in Glycyrrhizae Radix et Rhizoma to reverse M2 phenotype macrophages polarization. TFGR and ISL inhibited the promotion of M2 macrophages to breast cancer cells migration in vitro, STAT signal pathways and miR155 were partly involved.
Animals ; Cell Line, Tumor ; Cell Movement ; drug effects ; Cell Polarity ; drug effects ; Chalcones ; pharmacology ; Flavonoids ; pharmacology ; Glycyrrhiza ; chemistry ; Interleukin-4 ; genetics ; metabolism ; Macrophages ; cytology ; drug effects ; metabolism ; Mice ; RAW 264.7 Cells ; Rhizome ; chemistry

This study is to investigate the tumor invasion and metastasis inhibition effects of the immunoconjugate composed of lidamycin and anti-type IV collagenase monoclonal antibody Fab' fragment. Boyden chamber assay was used to evaluate the influence of Fab'-LDM on HT-1080 cells invasion ability, gelatinase spectrum was used to measure the change of invasion factor MMP-2 and MMP-9's secretion, and RT-PCR was adopted to determine TIMP-1 mRNA expression level. The immunoconjugate inhibition of tumor in situ metastasis was also tested in nude mice. The Fab'-LDM conjugates had dose-dependent inhibition effect on HT-1080 cells' invasion. At the concentrations of 5 and 10 nmol L(-1), the Fab'-LDM inhibited the invasion by (60 +/- 12) % and (79 +/- 11) % respectively. At the concentration of 5 and 10 nmol L(-1), the Fab'-LDM inhibited the secretion of MMP-2 by (42 +/- 8) % and (54 +/- 6) % and that of MMP-9 by (57 +/- 3) % and (87 +/- 1) %, respectively. RT-PCR indicated that conjugates increased the anti-invasion factor TIMP-1 level. The in vivo experiment showed that, compared with the control group, the tumor inhibition rate in Fab', Fab'-LDM, and LDM group equaled to (30 +/- 13) %, (86 +/- 26) %, (74 +/- 22) % respectively. In conclusion, Fab'-LDM could inhibit the invasion and metastasis of tumor and it might be a new tumor biotherapy agent.

Head ; surgery ; Humans ; Neck ; surgery ; United States