OBJECTIVEProvide the suggestion for MDAEs monitoring and the reference to strengthen the medical device administration by analyzing the 1900 reports of MDAEs.

METHODWith retrospective case study, analyze 1900 MDAE reports in Henan province in 2008. RESULT Orthopedic implants and the intrauterine device (IUD) caused the higher proportion of adverse events with serious degree. The scope that the reports covered needs to be raised.

CONCLUSIONFurther focus monitoring on orthopedic implants and the IUD should be strengthened. The medical device adverse events monitoring should be promoted by improving regulations, training and publicity.

Equipment Failure ; statistics & numerical data ; Intrauterine Devices ; adverse effects ; Prostheses and Implants ; adverse effects ; Retrospective Studies

AIM: To study the effect of curcumin on the expression of p21 and CD44V6 in breast carcinoma in nude mice.METHODS: Nude mice were xenografted with human breast cancer cell line MCF-7 and randomly divided into 2 groups(n=4 in each group): control group and curcumin group.In latent period,the percentage of tumor development was observed.Tumors were measured and the surface areas were calculated.RT-PCR was performed to detect the expression level of cyclin D1,p21 and CD44V6 mRNA.RESULTS: The tumor surface areas in the curcumin group were significantly lower than those in control group.In curcumin treatment group,the expression of p21 was up-regulated while cyclin D1 was nearly not changed.The expression of CD44V6 was significantly down-regulated in curcumin group.CONCLUSION: Curcumin inhibits the expression of CD44V6 and up-regulates the expression of p21 in nude mice bearing human breast cancer cell line MCF-7.

Objective To evaluate the measurement accuracy of serum gamma-glutamyltransferase (GGT) assays manufactured in China. Methods The International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) reference method for GGT was set up and, after verification, was used to evaluate the performance of routine assay systems made in China. The evaluation was performed twice before and after a calibration by a common serum calibrator. Results For the reference measurement, the within run and total CVs were all less than 1%. The biases with the target values of IFCC External Quality Assessment Scheme for Reference Laboratories (RELA) were all within the limit of equivalence. Before a calibration with a common calibrator, the largest biases of results of GGT of the routine tasting systems compared with reference method at three medical decide levels were -47.53%, -34.11% and -30.07% respectively, and the averaged biases were 14.53% ,12.88% and 12.48%. After calibrating by fresh serum calibrator,the largest biases were reduced to - 17.63%, -5.88% and -4.08% ,the averaged biases were reduced to 7.50%, 2.70% and 1.87%. Conclusion The performance of GGT measurements can be effectively improved by using a common fresh serum calibrator that has a value assigned with the reference method.

Objective To develop a MOSAIQ Integration PlatformCHN (MIP) based on the workflow of radiotherapy (RT) and to meet the actual requirements in China and the special needs for the radiotherapy department.Methods MIP used C/S (client-server) structure mode running on the local network in the hospital and its database was based on the Treatment Planning System (TPS) and MOSAIQ database.Five network servers,as the core hardware,supplied data storage and network service based on cloud services.The core software was developed based on Microsoft Visual Studio Platform using C# network programming language.The MIP server could simultaneously offer network service for about 200 workstations,including entry,query,statistics,and print of data.Results MIP had 15 core function modules,such as Notice,Appointment,Billing,Document Management (application/execution),and System Management,which almost covered the whole workflow of radiotherapy.Up to June 2016,the recorded data in the MIP were as follows:13546 patients,13533 plan application forms,15475 RT records,14656 RT summaries,567048 billing records,and 506612 workload records.Conclusions The MIP based on the RT workflow has been successfully developed and used in clinical practice.It is an important part of radiotherapy information system construction with the advantages of intuitive operation,real-time performance,data security,and stable operation.It is digital,paperless,user-friendly,and convenient for the retrieval and statistics of data as well as information sharing and department management,and can significantly improve the efficiency of the department.More functions can be added or modified to enhance its potentials in research and clinical practice.

At present, the incidence and mortality of tumors are increasing, and the treatment of tumors has attracted much attention. Radiotherapy is a key method for tumor treatment; however, its effectiveness is often constrained by radioresistance. During tumor radiotherapy, DNA damage response (DDR) is a key factor in the radioresistance of tumor cells. Research has shown that the radiosensitivity of tumor cells can be effectively improved by regulating the expression of key proteins in the DDR pathway. Targeting the DDR signaling pathway has become an effective strategy to reduce tumor radioresistance. This article focuses on the mechanisms, clinical research status, limitations, and current challenges associated with the key DDR proteins DNA-PKcs, ATM, ATR, and PARP as therapeutic targets for tumor radiotherapy sensitization, in order to provide a reference for the development of radiotherapy sensitization agents.