Objective: To investigate whether bcl-2 directly contributes to the development of drug resistance and apoptosis in o- varian cancer cell lines cells OC3. Methods: Retrovirus expression cector pLXSN-bcl-2 was constructed and was transfected to ovarian cancer cell line cells OC3 using Lipofectin,with empty vector pLXSN as a control. bcl-2 expession of transfected cells was analyzed by FACS and Western blot and Adr-induced cytotoxicity was measured by MTT assay. Apoptosis was also detected by PI DNA staining and DNA Ladder analysis.Results:pLXSN/bcl-2 transfected cells OC3/bcl-2 overexpressed bcl-2 and were resistant to Adr-induced cytotoxicity.The ability against Adr-induced apoptosis was increased. Conclusion: bcl-2 may play an important role in the resistance to Adr-inducing apoptosis, thereby increasing resistance of OC3/bcl-2 cells to chemotherapy.

OBJECTIVETo evaluate the quality status of rubella virus IgM diagnostic kits by national supervising sampling.

METHODSUsing legal inspection combining with exploratory study, the positive and negative coincidence rate, detection limit and repeatability of kits were verified.

RESULTSThe results showed that 15 of 16 batches of kits were qualified using legal inspection, and the passing rate was 93.8%. The unqualified item was negative coincidence rate. In exploratory study, only 11 batches (68.8%) complied with industry standard. The unqualified items were negative coincidence rate, detection limit and repeatability.

CONCLUSIONAt present, rubella virus IgM diagnostic Kits have some quality problems in the market. It is recommended that we adopt industry standard and national reference panel in the registration inspection for the future, which will prompt enterprises to improve quality.

Antibodies, Viral ; Humans ; Immunoglobulin M ; Quality Control ; Reagent Kits, Diagnostic ; standards ; Rubella ; diagnosis ; Rubella virus

Objective To study the bio-safety of a multifunctional dressing based on isobutyl-chitosan,a derivative of chitosan.Methods To investigate the local irritation of the multifunctional dressing by skin,subcutaneous and eye application,determine its sensitization by patch test and observe its systemic acute toxicity by abdominal injection.Results The isobutyl-chitosan multifunctional dressing had no irritation,sensitization and systemic acute toxicity.Conclusion The isobutyl-chitosan multifunctional dressing has a good bio-safety as a wound dressing.

Objective To evaluate the diagnosis and surgical treatment of pancreatic trauma(PT). Methods The clinical data of 41 cases of PT admitted into our hospital in recent 10 years were retrospeclively analysed. Results There were 8cases of PT in grade 1, 16 in grade2, 8 in grade 3, 5 in grade 4, 4 in grade 5 in this series. 12 patients had PT only, 29 (70.7%) had PT with other organs injury. Operation was performed on all 41 cases, of them. 34 cases are recovered; 7 died including 4 with multiple injuries. The mortality was 17.1% . There were 16 complications in this series, including fistula of pancreas and intestinal fistula(39.0%). Preoperative correct diagnosis was made only in 7 cases(17.1%). Conclusions The diagnosis of PT needs analysis and determination of all clinical materials. The exploration laparotomy must be done as early as possible. The chioce of operation should be made according to the condition of the PT to improve the survival rate.

OBJECTIVEA quantitative method was developed for the determination of tenuifolin in Tianwang Buxinwan and Guipiwan by HPLC.

METHODThe samples were separated by Alltima C18 column (4.6 mm x 250 mm, 5 microm) using methanol--0.05% phosphoric acid (65:35) as a mobile phase, flow rate was 1.0 mL x min(-1) and wavelength was set at 202 nm.

RESULTTenuifolin was detected in both Chinese preparations. The number of theoretical plates calculated by tenuifolin peak was 2 500. The regression equation of tenuifolin was Y = 5.239 x 10(6) X-6.247 x 10(5) (r = 0.9994) and the liner range was 10-500 g x mL(-1). The average recovery of tenuifolin was 97.5% (RSD less than 3.0%). The LOD of tenuifolin was 5.50 g x mL(-1).

CONCLUSIONThe method is sensitive, rapid and accurate.

Chromatography, High Pressure Liquid ; methods ; Codonopsis ; chemistry ; Diterpenes, Kaurane ; analysis ; Drug Combinations ; Drugs, Chinese Herbal ; chemistry ; Plants, Medicinal ; chemistry ; Polygala ; chemistry ; Reproducibility of Results ; Salvia miltiorrhiza ; chemistry ; Saponins ; analysis ; Triterpenes ; analysis

Purpose: There has been limited work assessing the use of re-irradiation (re-RT) for local failure following stereotactic spinal radiosurgery (SSRS). We reviewed our institutional experience of conventionally-fractionated external beam radiation (cEBRT) for salvage therapy following SSRS local failure. Materials and Methods: We performed a retrospective review of 54 patients that underwent salvage conventional re-RT at previously SSRS-treated sites. Local control following re-RT was defined as the absence of progression at the treated site as determined by magnetic resonance imaging. Results: Competing risk analysis for local failure was performed using a Fine-Gray model. The median follow-up time was 25 months and median overall survival (OS) was 16 months (95% confidence interval [CI], 10.8–24.9 months) following cEBRT re-RT. Multivariable Cox proportional-hazards analysis revealed Karnofsky performance score prior to re-RT (hazard ratio [HR] = 0.95; 95% CI, 0.93–0.98; p = 0.003) and time to local failure (HR = 0.97; 95% CI, 0.94–1.00; p = 0.04) were associated with longer OS, while male sex (HR = 3.92; 95% CI, 1.64–9.33; p = 0.002) was associated with shorter OS. Local control at 12 months was 81% (95% CI, 69.3–94.0). Competing risk multivariable regression revealed radioresistant tumors (subhazard ratio [subHR] = 0.36; 95% CI, 0.15–0.90; p = 0.028) and epidural disease (subHR = 0.31; 95% CI, 0.12–0.78; p =0.013) were associated with increased risk of local failure. At 12 months, 91% of patients maintained ambulatory function. Conclusion Our data suggest that cEBRT following SSRS local failure can be used safely and effectively. Further investigation is needed into optimal patient selection for cEBRT in the retreatment setting.