Activating transcription factor 4 ( ATF4),one of the activating transcription factors,belongs to the cyclic AMP response element binding protein family.The expression of ATF4 is up-regulated by tumor micro-environmental factors.And ATF4 regulates the processes of tumor growth,infiltration,metastasis,apoptosis and drug resistance.Therefore,ATF4 might serve as a potential therapeutic target in cancer.

OBJECTIVE To understand the status of gastroscope contamination.METHODS The bacterial(cultivation) of samples derived from inside and outside gastroscope after using was conducted.RESULTS There were heavy(contaminations) inside and(outside) gastroscope after using.Except for normal microbial populations(existing) on pharynx nasalis,many(conditional) pathogenic bacteria had been detected,such as Streptococcus pyogenes,Moraxella catarrhalis,and(nonzymocyte).CONCLUSIONS Many species of bacteria are detected inside and outside(gastroscope) after using.They are normal microbial populations in pharynx nasalis and some conditional pathogenic bacteria.It is (necessary) to strengthen regulation of gastroscope cleaning and disinfection. We should follow Technological Regulations of Disinfection(Ministry of Health,2004) to clean and disinfect endoscope strictly in order to avoid(hospital) acquired infection due to insufficient cleaning and disinfection.

Objective To explore the clinical significance of expression of DcR3/TR6 gene in the tissue of cardiac cancer and its correlation with survivin gene expression, Methods Two-step immnaohistochemistry technology was adopted to detect the expression of TR6 and survivin gene in 66 cases of cardiac cancer, none of the patients received prior chemotherapy. Results The positive expression rate of TR6 and survivin genes in cardiac cancer was 54.5% and 62.1% , respectively. The expression of TR6 was correlated with histology type,clinical stage and lymph node metastasis of cardiac cancer ( P<0.05 ). The positive expression rate of TR6 in cases that cardiac cancer with survivin expressed was significant higher than those without surviving expressed (χ2=15.145, P<0.01 ). Conclusions The expres-sion of TR6 and survivin can be regarded as valuable indicators for the diagnosis and prognosis of cardiac cancer.

Objective To assess the potential of whole blood IFN-γassay for diagnosing mycobacterium in rhesus macaques.Methods Firstly, basic serum IFN-γconcentrations of TST-negative and -positive rhesus macaques were detected.Then, heparinized whole blood from TST-negative and-positive rhesus macaques was incubated with PBS and 200 IU bovine-PPD ( tuberculin purified protein derivative ) for about 24 h, respectively.The supernatant plasma were harvested and used to determine the concentrations of IFN-γ.The results of plasma IFN-γconcentrations and stimulation index ( SI) were used to analyze the diagnostic potential of the whole blood IFN-γassay.Results The basic serum concentrations of IFN-γfor the TST-positive monkeys were significantly higher than that of the TST-negative macaques, showing a high coefficient of variation.There was no significant effect on the production of IFN-γin the TST-negative macaques.While significantly elevation of IFN-γconcentrations was found in stimulated plasma of TST-positive macaques (P<0.01).The SI of TST-positive macaques was significantly higher than the TST-negative ones.ROC curve analysis revealed that IFN-γconcentrations and SI could be used as evaluation index of whole blood IFN-γassay.Conclusions Based on a small sample experiment we have demonstrated that whole blood IFN-γassay may be one possible auxiliary diagnostic method for tuberculin skin test.