Objective In order to discuss the evaluation of generalized sterization for dental handpieces. Methods The generalized sterization for dental handpieces were used inclued collection dental handpieces, automatically cleaned, dried and distilled with oil, packed with paper or plastics and sterized with pulse-vuccum. Results All the indexes were fitted to the standard after the generalized sterization among the dental handpieces. The valid rate was 100%. Conclusions Generalized sterization for dental handpieces are effective measures to guarantee the clinical sterization quality.

OBJECTIVE To investigate the clinical degree of satisfaction to sterilizing-supplying center,and to consummate the development of the transition of its decentralized administration to centralized pattern.METHODS We designated the questionnaire of degree of satisfaction(DOS) and carried out the investigation.RESULTS The initiated DOS was 90.6%,the DOS in mid-stage(2006-2007) was 97.3%,and the DOS in the latest stage(2008) was 99.1%.CONCLUSIONS Centralized administration is effective pattern for the development of sterilizing-supplying center and important to ensure the quality of sterile materials and service for clinical medicine.

OBJECTIVE To reinforce the administration in the management of reusable medical appliances,and to ensure the quality of sterile.METHODS Every step of the integral sterilization were monitored.RESULTS The quality of every link in the course and the end quality of the reusable medical appliances were assured.All the pass-rates of routine examination and sample examination of our hospital and CDC in Zhuhai were 100%.CONCLUSIONS The process of integral sterilization in the management of reusable medical appliances can ensure the quality of sterile materials,and can prevent the nosocomial infections and guarantee the safety of patients.

This study was aimed to shed light on the biological and pharmaceutical characterization of the complexes of FUS1/hIL-12 double gene with cationic liposome, and to assess such complexes' transfection efficiency, stability and cytotoxicity; for they have the potential for use as drugs in gene therapy of lung cancer. Gel retardation assay, diameter measurement, and surface charge by photon correlation spectroscopy (PCS) were employed to select the appropriate ratio of "cationic liposome to DNA" of the double-gene and liposome complexes. The plasmid EGFP and plasmid PVITO2-hIL12-FUS1 mediated by cationic liposome were transfected into A549 lung cancer cells respectively, and the expression levels of EGFP and FUS1 and hIL-12 were determined by inverted fluorescence microscope and immunohistochemical and enzyme linked immunosorbent assay (ELISA) respectively. Agarose gel electrophoresis was performed to detect the stability of the double-gene and liposome complexes, after they were incubated with serum and Dnase I respectively. After the erythrocytes being incubated with the complexes of FUS1/hIL-12 with cationic liposome, the morphology of erythrocyte was observed by microscopy. The result of this study provides a basis for the use of the complexes of FUS1/hIL-12 with cationic liposome in gene therapy of lung cancer.
Cations ; Cell Line, Tumor ; Genetic Therapy ; Humans ; Interleukin-12 ; genetics ; Liposomes ; chemistry ; Lung Neoplasms ; genetics ; pathology ; Transfection ; methods ; Tumor Suppressor Proteins ; genetics