Matrix metalloproteases(MMPs)and tissue inhibitors of matrix metalloproteases(TIMPs) have a co-regulation of changes of the extraeellular matrix(ECM).MMPs can control the proteases which are related to the process of tumor development.Moreover,MMPs,produced by host cells including inflammatory ceUs,endothelial cells,pericytes and fibroblasts have a positive or negative correlation with tumor formation.

AIM:To investigate the validity of Rorschach inkblot method (RIM) in personality research by calculating the correlation of RIM with 16 personality factor questionnaire (16 PF).METHODS: Totally 70 undergraduates participated in the examination with RIM and 16 PF, then the correlations of all the variables of two measuring techniques were calculated. Standard score of comprehensive system was used in RIM.RESULTS: Some important Rorschach variables were correlated significantly with 16PF factors, and the correlations are consistent with their meaning. Some variables correlated with 16PF factors but were irrelevant in meaning.CONCLUSION: The results support the validity of RIM in personality study, and they also demonstrate that comprehensive system cannot well annotate RIM, but the meaning of some variables should be further researched.

The early diagnosis of cholangiocarcinoma is difficult, and the prognosis is poor. The molecular mechanisms underlying the development, growth and metastatic spread of biliary tract cancers are still unclear. The increase in worldwide incidence and mortality of cholangiocarcinoma justifies the impellent need to clarify the intracellular mechanisms triggering the malignant transformation of the biliary epithelium and growth of biliary malignancies. A more complete characterization of the molecular pathology of bile duct cancers could lead to the identification of valid targets for diagnosis and therapy of these devastating malignancies. This review describes the scientific progress made over the past years with regard to the understanding of the molecular processes of cholangiocarcinogenesis.

BACKGROUND: Item response theory (IRT) is widely used in the westem world, but its use for non-cognitive measurement has been very limited in China. It is necessary to explore whether IRT is applicable in non-cognitive settings and find the optimal model.OBJECTIVE: To find the optimal IRT model for self-report questionnaire analysis with the instance of emotional competence scale (ECS) and compare the effectiveness of different models in light of model data fitting and the volume of information provision.DESIGN: A comparative study of different psychometric models tested with the same data set.SETTING: Shandong Laiwu Vocational and Technical College; Department of Psychology, Liaoning Normal University.PARTICIPANTS: Totally 617 college students of Shandong Normal University (311 males and 306 females)and 564 senior high school students of the 17 Laiwu High School (283 males and 281females) participated in the study during May 2004.METHODS: Emotional competence scale (ECS) was adopted for psychometric measurement for 5-point Likert-type items. The scale was divided into 9 subscales, namely impulse control, empathy, persistency, interpersonal intimacy, social skills, emotional regulation, emotional stability, sense of responsibility, and self-confidence. One-parameter, two-parameter and three-parameter logistic model and grade response model were used for analysis of the 9 subscales, followed by goodness of fit test (analogous to Chi-square test) and comparison of the measurement precision (reliability)of the three models.MAIN OUTCOME MEASURES: Log-likelihood ratio, average χ2 statistics and average volume of information when one-parameter, two-parameter and three-parameter Logistic model.RESULTS: Totally 1 220 questionnaires were handed out and 1 181 with valid answers were obtained. Comparison of the 3 logistic model showed that the two-parameter logistic model had the least log-likelihood with the least items whose mean square residual error were greater than 2, and the volume of test information was greater than that provided by one-parameter model and no less than the three-parameter model. Therefore, the two-parameter logistic model was the best for 2-point scoring model. But the measurement precision of two-parameter Logistic model was lower than that of multi-grade response model.CONCLUSION: When 2-point items are adopted in self-report questionnaire, 2-parameter logistic model can be applied but not 1- or 3-parameter Logistic models. But when the questionnaire uses items that have more than 2 response grades, the measurement precision can be better than that of 2-point data. Merge of the options for the items may result in lowered measurement precision.

Objective To observe the effect of high glucose on the expression of activating transcription factor 4 (ATF4) in cultured retinal Müller glia cells.Methods The retinal tissue of Sprague Dawley (SD) rats was collected,and Müller cells were isolated and cultured.The glial fibrillary acidic protein (GFAP) and glutamine synthetase (GS) of Müller cells were identified by streptavidin-biotinperoxidase complex.Cultured rat Müller cells were divided into control group (5.5 mmol/L glucose),group A (20 mmol/L glucose),group B (30 mmol/L glucose) and group C (40 mmol/L glucose).ATF4 protein expressions in Müller cells of four groups were measured by Western blot four days after cultured.Results GFAP and GS expressed in more than 95％ of Müller cells.Over 95％ of Müller cells of group A,B and C were positive for GFAP and GS.Western blots indicated that ATF4 protein in group A,B and C increased obviously compared with the control group (q=0.293,0.754,0.484; P＜0.05).Conclusion High glucose can increase the expression of ATF4 protein and cause endoplasmic reticulum stress in retinal Müller glia cells in vitro.

Objective To evaluate the efficacy and safety ofbevacizumab combined with FOLFIRI regimen as second-line treatment in advanced colorectal cancer.Methods Sixty-five advanced colorectal cancer patients previously treated with oxaliplatin were divided into test group(33 patients) and control group (32 patients) by random digits table method.The patients in test group received bevacizumab combined with FOLFIRI regimen chemotherapy.The patients in control group received FOLFIRI regimen chemotherapy only.The therapeutic effect was evaluated every 4 cycles.Results In test group,1 patient received complete remission,9 patients had partial remission,the rate of efficacy was 30.3％ (10/33).In control group,non patient had complete remission,3 patients received partial remission,the rate of efficacy was 9.4％ (3/32).The rate of efficacy between two groups had significant difference (x2 =4.45,P =0.035).The median duration of survival was 13.0 months in test group,and 10.3 months in control group(HR =0.58,P=0.038).The median progression-free survival duration was 7.5 months in test group,and 4.4 months in control group (HR =0.45,P =0.003).The median treatment cycle was 12 cycles in test group and 8 cycles in control group.The rate of Ⅲ/Ⅳ grade adverse events in test group was higher than that in control group[72.7％(24/33) vs.46.9％ (15/32)] (P ＜ 0.05).None of these events led to death during the study.Conclusions Bevacizumab combined with FOLFIRI as second-line treatment in advanced colorectal cancer can improve the total remission rate,and prolong the progression-free survival duration and total survival duration with an acceptable adverse reaction.

Objective:To observe the fluoride release rate of F-containing thermoplastic resina,trying to find a suitable concentration of fluoride in thermoplastic resina to prevent caries in base teeth of partial denture restorations.Methods:Na2(PO3)F-containing thermoplastic resina,respectively 0,10%,15%,20% and 25%(w/w)in concentration were cut into three 1 g blocks and immersed in 100,200 and 500 ml deionized water.These composite resins in 100 ml and 200 ml solutions were replaced every 1,2,3,6,9,16 days(every 7 days after that)until two months later,500 ml solution was reserved after 3,6,9 days every 7 days later until two months,2 ml of which were reserved every time.The fluoride release rates of these thermoplastic resina were tested by potentiometry.Results:All thermoplastic resina containing different concentrations of fluoride could release F-during the period of 65 days.Conclusion:When Na2(PO3)F is mixed in thermoplastic resina,it releases fluoride slowly.Thermoplastic resina containing 15% F-has higher release rates of fluoride.

1263 children aged 3-6 years old in Wuxi city were included.Overweight 191 children were overweighte,104 obese and 968normal.SPSS analysis showed that deciduous teeth caries and age were positively relative (F=31.77,P=0.0001);obesity and age were not relative(x2 =36.00,P=0.33);deciduous teeth caries and obesity were not relative (F =0.21,P =0.808).Deciduous teeth caries is not related with obesity.

Objective:To observe the efficacy and safety of docetaxel plus apatinib as a second-line treatment for advanced non-squa-mous non-small cell lung cancer. Methods:From February 2015 to August 2016, 39 eligible patients were randomly assigned to experi-mental arm (19 cases) and control arm (20 cases). Patients in the experimental arm received 60 mg/m2 d1 docetaxel and 500 mg d1-21 apatinib for a 21-day cycle until disease progression or unacceptable toxicity occurred. Patients in the control arm received chemother-apy only. Disease control rate (DCR), incidence of adverse event, and progression-free survival (PFS) were analyzed. Results:The dis-ease control rates (DCR) in the experimental and control arms were 63.2% and 30.0%, respectively, with statistical difference (P=0.039). The experimental arm experienced many grades 3-4 hematologic adverse events with statistical difference (P=0.032). The medi-an PFS values were 5.6 months (95% CI=4.8-6.3) and 3.0 months (95% CI=1.8-4.1) with statistical difference (P=0.04). Conclusion:Docetaxel plus apatinib can be delivered safely with careful monitoring for the treatment of advanced non-squamous non-small cell lung cancer, and this treatment can significantly improve the DCR and PFS.

Objective:To investigate the current situation of surrogate in China,analyze the reasons,and then provide effective suggestions and countermeasures.Methods:A questionnaire survey was conducted among medical staff and patients in an institution with assisted reproductive technology (ART),combining literature review and sociological research methods such as data maps,to explore and analyze the surrogacy.Results:The number of institutions with ART increased rapidly and its regulation became difficult.More surrogate network was observed in first-tier cities as well as the eastern and southeastern coastal provinces.That respondents agreeing with surrogacy was quite serious in some provinces.The reasons of surrogate were patients' needs,social concepts,weak government supervision,and so on.Conclusions:It should improve the laws of ART,explore long-term supervision mechanism,strengthen the management of internet,shield the information about surrogate,enhance medical ethics education for ART staff,and guide the infertility patients to establish the correct ethical concepts.