OBJECTIVE:To investigate the distribution of magnetic nanoparticle embedding Paclitaxel in vivo and its curative effect on lung cancer in mice model.METHODS:The magnetic lipsomes containing Paclitaxel and the Paclitaxel liposomes were injected into caudal vein of mice,and which were exposed to magnetic field of 0.5T.The concentrations of the two drugs in different organs were determined.The lung cancer model was established in mice and the therapeutic efficacy of the different drugs on tumor was evaluated by comparing the weight of mice before and after administration.RESULTS: In the mice treated with magnetic liposome containing Paclitaxel,the drug concentration in lung which was exposed to magnetic field was significantly higher than that in the others sites,and a steady state concentration was reached quickly in lung after administration,but gradually in other organs.In the mice treated with liposomes containing paclitaxel,a steady state concentration was reached gradually in lung.The tumor control rate was 27.53% in mice treated with magnetic liposome containing Paclitaxel plus magnetic field intervention,significantly higher than in the control group.CONCLUSION: The result shows that magnetic targeting drug delivery is an effective drug delivery system,by which,the drugs can aggregate to the target site in large quantity which may lead to a reduced distribution of drugs in non-target sites.

OBJECTIVE: To strengthen the management on procedures for the introduction,examination and approval of new drugs in hospital.METHODS: The experience on the current procedures for the introduction,examination and approval of new drugs in our hospital was summarized,and the Microsoft.NET technology was used to develop Web-based "information system of introduction,examination and approval of new drugs".RESULTS & CONCLUSIONS: The new system adopted three-level "browser / server" structural pattern and it is composed of external network new drug data collection system and internal network new drug examination and approval system.The system is advanced,stabile,practical,intelligent and safe,and it has simplified the new drug examination and approval procedure,enhanced the working efficiency.Its application is characterized by justice,publicity and transparency.

BACKGROUND:In the early development of zebrafish embryos, cels divide and proliferate rapidly, but low concentration of deguelin can delay the development of zebrafish embryos.
OBJECTIVE:To observe the effect of different concentrations of deguelin on cyclin D1 gene expression in zebrafish embryos.
METHODS:Though normal fertilization, zebrafish embryos that incubated to the 2-cel stage (about 0.75 hour after fertilization) and shield stage (6 hours after fertilization) were colected and put into 12-wel plates treated with 100, 200, 400 nmol/L deguelin at 28.5℃in an incubator til the shield period and 24 hours after fertilization, respectively. Simultaneously embroys treated with 1% dimethyl sulfoxide solution were as a control group, cultured in the same conditions. Cyclin D1 RNA probes were prepared for the whole mountin situhybridization, observing staining by an upright fluorescent microscope camera to detect the effect of deguelin on cyclin D1 expression in zebrafish embryos.
RESULTS AND CONCLUSION:Deguelin showed significant negative regulation on the expression of cyclin D1 gene in zebrafish embryos. Cyclin D1 expressed in outsourcing cels in embryos of shield stage, and a significant reduction in the expression of cyclin D1 came up with the increasing concentrations of deguelin. In the 400 nmol/L deguelin treatment group, there was nearly no expression of cyclin D1. Cyclin D1 expressed in the brain, central nervous system, immature eye, somites, trunk, and tail of embryos at 24 hours after fertilization, and reduced significantly in the 100 nmol/L deguelin treatment group, especialy in the proliferative area. In the 200 and 400 nmol/L treatment groups, the embryonic development slowed down signficantly, and cyclin D1 gene mainly expressed in the dorsal ectoderm cels.

BACKGROUND:Anticancer drug deguelin delays the embryonic development of zebrafish, but its exact mechanism is not yet clear.
OBJECTIVE:To explore expression differences in genes and signaling pathways in deguelin-treated zebrafish embryos.
METHODS:Zebrafish embryos were harvested from zebrafish fed according to the Zebrafish Book. Zebrafish embryos at 2-cel stage were selected and divided into two groups:control group treated with dimethyl sulfoxide incubator liquid, and experimental group treated with 0.6μmol/L deguelin. Total RNA was extracted from the two groups at sphere stage. Then, gene chip technique was used to detect differential y expressed genes in the deguelin-treated zebrafish embryos. Real-time quantitative PCR was employed to validate microarray cluster analysis and pathway analysis to explore the mechanism of action of deguelin.
RESULTS AND CONCLUSION:Chip results showed that 407 genes were upregulated more than three times and 461 genes were downregulated more than three times after deguelin treatment. PCR validation results were consistent with those of the chip. Fourteen pathways were identified by KEGG pathway analysis. Deguelin may play an important role by intervening cel metabolism growth and differentiation.

OBJECTIVE: To analyze the occupational hazardous factors in hospital pharmacy so as to enhance pharmacist’s awareness of self-protection against such hazards. METHODS: The occupational hazardous factors including physical factors, chemical factors and psychological factors etc were analyzed and the countermeasures were discussed. RESULTS & CONCLUSIONS: Pharmacists should be cautious to the occupational hazards, strengthen traning and education, raise awareness of self-protection to guard against the occupational hazard event.

OBJECTIVE:To provide references for the evaluation of drug suppliers in hospital so as to promote the suppliers to enhance their service level. METHODS: The drug suppliers were evaluated comprehensively with on-time delivery percentage, drug price and post-sale service as evaluation criteria. RESULTS & CONCLUSIONS: The evaluation of drug suppliers can not only raise the service level of the suppliers, but also facilitate a scientific and standardized management of drug supply. However, great importance should be attached to the impartiality and fairness in the evaluation.

OBJECTIVE:To establish a simple individualized dosage regimen of multiple oral dosing of Theophyllin. METHODS:Based on pharmacokinetic parameters,Excel function was used to design the dosage regimen of multiple oral dosing extravascular administration of one-compartment model with Theophylline as an example. RESULTS:The following parameters such as plasma drug concentration at any time (t) since administration of Theophylline,peak time,maximum steady plasma-drug concentration,minimum steady plasma-drug concentration,accumulation coefficient,fluctuation percentage,fluctuation amplitude,and dosage for children and the old could be obtained and the concentration-time curves were able to be drawn from the input data including physical and pathological parameters,dosage (X0) of Theophylline,interval ?,absorption rate constant (Ka),drug clearance rate (CL),absorption fraction (F) and apparent volume of distribution (Vd). CONCLUSION:The method adopted in our study is simple,reliable and intuitive,and it is applicable for the design of the individualized dosage regimen of Theophyllin.

BACKGROUND:At present bone marrow mesenchymal stem cel s act as the main seed cel s in bone tissue engineering, but only 0.001%-0.01%cel s are in the bone with difficulty in cel separation and purification. OBJECTIVE:To explore the biological characterization of human placenta derived mesenchymal stem cel s and biocompatibility with three-dimensional porous hydroxyapatite ceramic scaffold. METHODS:Human placenta derived mesenchymal stem cel s were morphological y observed and identified usingflow cytometry, fol owed by osteogenic, adipogenic, chondrogenic induction for 3 weeks. Afterwards, the potential of multi-directional differentiation was identified by alizarin red S, oil red O and toluidine blue staining. DAPI staining was used to observe the adhesion of cel s on the surface of the hydroxyapatite ceramic scaffold under scanning electron microscope. RESULTS AND CONCLUSION:The human placenta derived mesenchymal stem cel s showed long spindle shape and uniform size under the microscope;they highly expressed CD29 and D90, but did not express CD45 and CD106. Fol owing induction, mineralized nodules were observed by alizarin red S staining, lipid droplets by oil red O staining and blue-dyed toluidine blue staining. These cel s adhered wel to the scaffold surface, indicting they are suitable for bone tissue engineering.

OBJECTIVE:To establish quality control system by using modern scientific idea and advanced method in in?patient pharmacy.METHODS:Under the situation o f running authentication of ISO9001quality control system in our department,inpatient pharmacy should take the patients as focus to offer good and normative services to patients and clinical departments and continue to make our work better.RESULTS&CONCLUSION:Implementation of ISO9001quality control system has standardized the management of quality of inpatient pharmacy as well as increased the patients'satisfaction.And satisfactory social and economical benefits have been obtained and self-perfect and continuous improvement have been realized in the inpatient pharmacy.

OBJECTIVE:To improve the management on drug supply in our hospital by using the Six sigma method. METHODS: The quality control of the management on drug supply is achieved by practicing the five steps of Six sigma: concept, measurement, analysis, improvement and control. RESULTS & CONCLUSIONS: Six sigma method did effectively bring down the defect rate of drug supply from 6.66% before the introduction of the method to 0.59% after and raise the degree of satisfaction to the work of medicine provision from 80% before the introduction of the method to 95% after.