Animals ; Antineoplastic Agents ; therapeutic use ; Breast Neoplasms ; drug therapy ; genetics ; metabolism ; Cyclin-Dependent Kinase Inhibitor p27 ; Fenretinide ; therapeutic use ; Hepatocyte Nuclear Factor 3-alpha ; genetics ; metabolism ; Humans ; Intracellular Signaling Peptides and Proteins ; metabolism ; Prognosis ; Receptors, Estrogen ; metabolism

Objective To investigate the status of occupational burnout among general practitioners (GPs) and explore the relationship between coping style and burnout. Methods 243 GPs were assessed by Chinese Maslach burnout inventory(CMBI) and simple coping style questionnaire. Results 36.6% of GPs experienced mild burnout, 26.8% moderate burnout, and 3.3% severe burnout; 11.5% of GPs got high scores on emotional exhaustion(EE), 44.9% subjects got high scores on depersonalization(Dp) and 43.6% subjects got high scores on reduced personal accomplishment (RPA). Male GPs experienced greater personal accomplishment than female. Among technical post, subjects with senior technical post scored higher on Dp. The condition of occupational burnout among subjects in north Jiangsu was more serious. GPs with seniority of 5 to 9 years seemed to be more prone to occupational burnout. The coping style of GPs had obvious correlation with occupational burnout. Conclusion The status of occupational burnout among GPs is serious. To prevent and cure occupational burnout, more attention should be paid to female, senior technical post GPs and'persons with seniority of 5 to 9 years. And taking positive coping style can reduce GPs' occupational burnout.

The production conditions of glutathione with shaking flask fermentation by the mutant Saccharomyces J-X25, a methionine-defected strain were studied, and the optimum culture conditions are as follows: initial pH6. 0, temperature 30℃, 100ml in 500ml flask, the inoculum size 10% and agitation rate 220r/min. The emphasis was on the stimulating effect on the cells by dioxogen and the sodium lactate as surfactant. Both of which were added at the logarithmic phase of fermentation, and the GSH production was up to 0. 253g/L , 52% higher than the control without the additions. Compared with the production of GSH initial strain that by the mutant in optimum conditions was increased by 79%.

OBJECTIVE:To observe therapeutic efficacy and liver toxicity of chemotherapy combined with bevacizumab in the treatment of colorectal cancer liver metastases (CLMs). METHODS:126 CLMs patients were selected and randomly divided into chemotherapy group(54 cases)and combination group(72 cases). Chemotherapy group received FOLFOXIRI regimen:irinotecan 165 mg/m2+oxaliplatin 85 mg/m2+calcium folinate 200 mg/m2+fluorouracil 2 g. Combination group was additionally given bevaci-zumab 5 mg/kg one day before chemotherapy on the basis of FOLFOXIRI regimen. A treatment course of 2 groups lasted for 2 weeks,and both received 12 courses of treatment. The pathological response,survival rate and toxic reactions caused by chemother-apy were compared between 2 groups. RESULTS:Pathological complete response proportion,tumor remission rating(TRG),the proportion of patients with tumor necrosis rate ≥50% in combination group were significantly higher than chemotherapy group, with statistical significance (P<0.01). The proportion of TRG4-5,TRG 1-3 progression-free survival in combination group were significantly higher than chemotherapy group,with statistical significance (P<0.05). The incidence of liver parenchymal necrosis in combination group was significantlg higher than chemotherapy group,there was statistical significance (P>0.05). CONCLU-SIONS:Chemotherapy combined with bevacizumab can improve pathological response and the incidence of CLMs necrosis and doesn't increase liver toxicity.

Objective To study the antitumour, immunomodulating and enterobacteria regulating effects of exopolysaccharides (EPS). Method The suppressive rate of growth of sarcoma 180, the index of immunity, and the intestinal microflora were determined. Results (1) EPS inhibited the growth of sarcoma 180 by oral for BALB/c mice significantly. The suppressive rate at the dose of 120mg/kg bw?d was 42.7%. (2) At the dose of 120mg/kg bw?d the index of thymus and IL-2 in serum increased significantly. There was increasing trend in respect of TNF-? and killing activation of NK cell. (3) The amounts of Lactobacillus in groups treated with EPS increased significantly, and the amounts of Enterobacteriacea and Enterococcus droped significantly. Conclusion EPS had the antitumour effect in vivo, and could modulate the immune function, improve the microbial balance in the intestinal tract of tumour bearing mice to some extent. So the antitumour mechanism was probably correlated with the immunomodulating effect.

Objective To evaluate the effectiveness of "dispersing lung-qi and relieving asthma, warming Yang to induce diuresis" method on CPHD patients during acute period with peripheral edema and observe the effect on ADH. Methods The CPHD patients during acute period with peripheral edema were randomly divided into treatment group and control group. The treatment group received Chinese medicine adding to regular western medicine, the principle is dispersing lung-qi and relieving asthma, resolving phlegm to stop coughing, warming Yang to induce diuresis. The control group received placebo adding to regular western medicine. Both of the groups were treated for 14 days. The effect observed indexes were as follows:general curative effect, integral of main symptoms of TCM, integral of western medical signs, serum electrolyte, etc. Mechanism index was about ADH. Results The treatment group had better effects than the control group on the general curative effect, reducing integral of symptoms and signs, rectifying electrolyte and acid-alkaline-balance disturbances, etc. The safety analysis of two groups had no significant abnormality. Meanwhile, the treatment group had more superiority than the control group on reducing serum ADH. Conclusion The comprehensive treatment of traditional Chinese and western medicine probably has more advantage in increasing the general effect, improving symptoms and signs, rectifying electrolyte and acid-alkaline-balance disturbances, etc. This therapeutic method can restrain secretion of ADH. It indicates that restraining secretion of ADH maybe part of the mechanism of using "dispersing lung-qi and relieving asthma, warming Yang to induce diuresis" method to treat CPHD patient during acute period with peripheral edema.

The quality of traditional Chinese medicines (TCMs) has been mainly evaluated based on chemical ingredients, yet recently more attentions have been paid on biological ingredients, especially for pill-based preparations. It is a key approach to establish a fast, accurate and systematic method of biological ingredient analysis for realization of modernization, industrialization and internationalization of TCMs. The biological ingredient analysis of TCM preparations could be abstracted as the identification of multiple species from a biological mixture. The metagenomic approach based on high-throughput-sequencing (HTS) and big-data-mining has been considered as one of the most effective methods for multiple species analysis of a biological mixture, which would also be helpful for the analysis of biological ingredients in TCMs. Simultaneous identification of diverse species, including the prescribed species, adulterants, toxic species, protected species and even the biological impurities introduced through production process, could be achieved by selecting appropriate DNA biomarkers, as well as applying large-scale sequence comparison and data mining. By this approach, it is prospective to offer an evaluation basis for the effectiveness, safety and legality of TCM preparations.
Biological Products ; chemistry ; Data Mining ; High-Throughput Nucleotide Sequencing ; Medicine, Chinese Traditional ; Metagenomics ; methods

OBJECTIVETo construct microRNA-223 overexpression and suppression lentivirus vectors and determine their effects after infecting oral squamous cell carcinoma (OSCC) cell line.

METHODSLentivirus vectors GV229 and GV232 were cut by the restriction sites of Age I and EcoR I and connected to the target gene, which contained mature microRNA-223 and microRNA-223 oligonucleotide. Real-time polymerase chain reaction (PCR) method was used to detect the microRNA-223 expression level after infecting the recombinant lentivirus vector into the OSCC cell line.

RESULTSThe successful construction of microRNA-223 recombinant lentivirus vectors was confirmed by the PCR method and DNA sequencing. HN-30 cell infected with microRNA-223 overexpression vector showed a significant increased in microRNA-223 expression, whereas HN-30 cell infected with microRNA-223 inhibitor vector suppressed microRNA-223 expression.

CONCLUSIONThe microRNA-223 overexpression and suppression lentivirus vectors are successfully constructed. These vectors could alter the expression level of microRNA-223 in OSCC cell line significantly, and provide a stable cell line for functional studies in the future.

Dust ; analysis ; Environmental Monitoring ; methods ; Silicon Dioxide ; analysis

Professor Y ang Y ufe i is the director and founder of the Oncology Department of X iyuan Hospital of China Academy of Chinese Medical Sciences. Professor Y ang Y ufei thinks highly of the treatment of breast cancer with harmonizing and dredging principle combining traditional Chinese medicine (TCM) and western medicine. She regards the basic pathogenesis of breast cancer is not only on traditional liver-kidney yin deficiency and liver-qi stagnation with spleen deficiency, but also three mechanisms which are breakdown of the normal physiological coordination be-tween the liver and kidney, heart and the kidney and Shaoyang. Professor Y ang gradually formed Tri-Traffic Dredg-ing Liver And Nourishing Kidney Formula base on tonification and purgation in combination. Y ang Y ufei thinks highly of combining treatment of TCM and western medicine, especially combined with endocrine therapy. Professor Y ang also pays much attention on immune function of patients and health education.