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.

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.

Angioplasty, Balloon, Coronary ; Humans

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 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.

The incidence of severe acute pancreatitis in children is lower.But it has abrupt onset and atypical symptoms.The fatality rate is relatively high.This paper will review the progress on the diagnosis and treatment of severe acute pancreatitis.

Objective To give a systematic reviews on effect of taking blood gas via cephalic artery for infants.Methods Meta-analysis were used to analyze literatures about taking blood gas via cephalic artery for infants.Results 11 studies were included.The rate of successful puncture was 87.5％～98.0％ in the intervention group and 55.3％ ～94.6％ in the control group.The rate of successful puncture via cephalic artery were higher.Conclusions Effect of taking blood gas via cephalic artery for infant was better than that via other artery.Successful rate was high,while the incidence rate of local side effects was low.

Vascular endothelial growth factor (VEGF) is the endothelial cell-specific mitogen, facili-tates endothelial cell proliferation, increases vascular permeability and accelerates the formation of new blood vessels role. Angiogenesis is an important physiological and pathological significance of the process. In the human wound healing, inflammation, organ regeneration and tumor growth and metastasis, vascular prolifer-ative diseases, angiogenesis is an important role. Therapeutic angiogenesis is the use of inducible factor or vascular endothelial progenitor ceils, simulates in vivo angiogenesis mechanism, promotes angiogenesis and improves the collateral circulation. In this paper, VEGF and therapeutic ansiogenesis research progress were reviewed.