Serine/ aginine rich(SR)protein,SR protein kinase and other enzymes participate in the composition of alternatively spliced tissue factor(asTF). Recently researchers have found that this protein takes a part in tumor angiogenesis,tumor progression,metastasis and so on,so the detection of its clinical content will be very significant.

Objective: To develop the norm of Piers-Harris Children's Self-concept Scale (PHCSS) in Chinese urban children and test the reliability and validity. Method: A total of 1698 children with the mean age 12?3 year-old (846 boys and 852 girls) from 20 cities in China completed the scale. Results: The test-retest reliability, split-half and Crobach were in 0.695～0.858, the correlation between each item score and total score were in 0.078～0.467, showed better item differentiation except for 3 items. The validity was perfect, represented by significant correlation (r=0.051～0.353) between the score and Conners Parent Symptom Questionnaire and Teacher Rating Scale. Conclusion: The results demonstrate the scale are suitable for demands of psychometrics and applicable in Chinese children.

Objective: To investigate the cerebral cognitive function and intelligence in children with learning disorder (LD). Method:Thirty children with LD were examined with Wisconsin Card Sorting Test (WCST) and the Wechsler intelligence Scale for Children-Chinese Revised (WISC-CR). The results were then compared between LD and healthy control.Results:Compared with healthy control, the correct categories of WCST and correct responses in LD group were significantly lower (4.3?1.3/5.1?1.2). The persistent errors (38.6?10.7/23.9?8.4), total trials and total errors of WCST in LD were significantly higher than those in healthy control. In LD group, the full intelligence quotient (FIQ)(89.0?14.3/112.6?17.0) and the verbal intelligence quotient (VIQ) and performance intelligence quotient (PIQ) of WISC were all significantly lower than those in healthy control. So did scores of four factors of WISC, such as arithmetic, comprehension, and block design and object assembly. The incidence of abnormal intelligence structure in LD (80%) was significantly higher than that in healthy control (30%). The IQ in LD children was positively correlated with the correct categories and correct responses of WCST, and negatively with the total trials and the total errors and persistent errors of WCST.Conclusion:LD children suffered the frontal executive function deficits and cognitive dysfunction.

BACKGROUND: Resin adhesives include total-etching, self-etching and one-step adhesive. The studies concerning their adhesive properties remain different.OBJECTIVE: To compare the bonding strengths of fiber posts cemented to root canals with etch-and-rinse adhesives and self-etch adhesives, and to observe the physical interface bonding conformation using laser scanning confocal microscope so as to understand the retention of macro-and micro-morphology relationship.DESIGN, TIME AND SETTING: In vitro comparative observation was performed at the laboratories of Prosthodontics and Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University from March 2008 to March 2009.MATERIALS: MATCHPOST fiber posts (Bisco, USA); etch-and-rinse adhesives (One-step, Bisco, USA) and self-etch adhesives (Panavia F adhesive system, Japan), fluorescein (Sigma, USA).METHODS: A total of 10 upper central incisor teeth, which had been freshly extracted for periodontal reasons, were selected,and the crown, 1 mm from the enamel-cementum junction, was cut. They were randomly divided into 2 groups with 5 specimens in each group. The fiber posts were bonded to root canals with One-Step or Panavia F which was tagged with rhodamine B.MAIN OUTCOME MEASURES: Each specimen was sectioned into two 2 mm-thick slices. A push-out test was made in a universal testing machine (EZ20), and confocal laser scanning microscopic (CLSM) analysis was performed to evaluate the primer penetration into dentin. The thickness of adhesive layer was measured by random software.RESULTS: The bonding strength of the group cemented with One-step was significantly greater than Panavia F (P < 0.05). The bonding strength of root crown was significantly greater than root apex (P < 0.05). One-step represented in CLSM image showed numerous and longer resin tags than Panavia F (P < 0.05).CONCLUSION: Etch-and-rinse adhesives (One-step) gained higher bonding strengths than self-etch adhesives (Panavia F).Resin binder to bond strength of fiber post and neck was greater than in the root apex.

Objection To study the effect of letrozole on EM rat models and influence on the reproductive system. Methods Surgically transplanted autologous uterine tissues to ectopic site beside the uterines in rats were used as animal models to study endometriosis. 20 EM model rats were random divided into letrozole-treated group and saline solution-treated control group. The change of ectopic lesion volume in each group was compared before and after treatment. Apoptotic cells were assessed by the terminal deoxynucleotidyl transferase-mediated deoxy-UTP nick-end labeling (TUNEL) assay, and the uterian horn and ovary were weighted and observed by optical microscopy to study the change of morphology. Results The volumes of the endometriotic tissues of letrozole group reduced more than that in control group[ ( 28. 75 ± 2.28 )mm3 vs ( 108.39 ±9. 98)mm3, P <0.01 ]. The apoptotic rate in letrozole group [ (5.52 ±2. 81 )% ]was higher than control group[ (2.11 ± 1.70)%, P <0. 01 ]. The ovarian weights in letrozole-treated group increased significantly[ (25.25 ± 9. 89) mg/100g vs ( 13. 10 ± 2. 70 ) mg/100g, P < 0. 01 ], arid the ovaries showed polycyst. The uterian weights in letrozole-treated group[ (41.46 ± 15.81 ) mg/100g vs (94. 81 ±18.00) mg/100g, P <0. 05 ] significantly decreased, and the endometriums presented atrophy. Conclusion Letrozole treated EM by means of increasing the apoptosis of the ectopic tissues. Letrozole would give ovarian over stimulating and the uterian weighting decreased as well as endometriums atrophy.

AIM: To investigate the effects of andrographolide on the invasion and apoptosis of ovarian cancer cell line SKOV-3, and to explore the possible mechanisms.METHODS: SKOV-3 cells were treated with different concentrations (0, 5, 10, 20 or 40 μmol/L) of andrographolide for different time (12, 24, 36 or 48 h), and then the cell viability was determined by CCK-8 assay.The cell invasion ability was analyzed by Transwell assay and cell apoptosis was detected by TUNEL staining.The protein levels of p-PI3K, p-Akt and p-mTOR were examined by Western blot.RESULTS: The results of CCK-8 assay revealed that andrographolide inhibited the growth of SKOV-3 cells in a dose-and time-dependent manner.Treatment with andrographolide at 20 μmol/L for 36 h significantly decreased the invasion ability of SKOV-3 cells, while increased cell apoptosis.In addition, the protein levels of p-PI3K, p-Akt and p-mTOR were reduced after andrographolide treatment.CONCLUSION: Andrographolide inhibits the growth and invasion of ovarian cancer SKOV-3 cells by suppression of PI3K/Akt/mTOR signaling pathway.

Objective: To explore the relationship among self-esteem,identity and attribution tendencies of secondary vocational technical school students.Methods: Surveying 600 students with the questionnaires of self-esteem,identity and attribution tendencies when they were in grade 1,2,3.Results: Apparent correlations existed among self-esteem,identity and attribution tendencies,and significant differences existed in different genders,grades and urban and rural areas.Conclusion: Vocational schools should develop education of mental health and counseling,and teachers should students' should be concerned mental health about so as to guide them to get positive self-esteem,self-confidence,and self-identity,and choose the correct way of attribution.

Objective To synthetically evaluate the risk factors of recurrent cerebral infarction in Chinese population.Methods The research literature on the risk factors of recurrent cerebral infarction from the domestic December 2011 published was collected through computers literature retrieval (China Academic Journal,VIP Chinese Science and Technology Academic Journal,Wanfang Database) and literature review.Meta-analysis method was used to synthetically and quantitatively analyze the risk factors of recurrent cerebral infarction reported in China.All of the data were analyzed by STATA 11.0 software.Results The total research literature was 216 studies,and 12 studies were enrolled in this study according to the inclusion and exclusion criteria.All case-control study.There were 1599 cases in case group,2566 cases in control group cumulatively.Meta analysis showed that the summary statistics of sex,hypertension,diabetes,hyperlipemia,smoking,age were 1.58 (1.04-2.39),2.66 (2.02-3.51),2.23 (1.70-2.93),2.22(1.48-3.32),1.94 (1.64-2.29),1.58 (0.55-2.60),respectively.There were significances in statistics (Z =2.16,6.95,5.82,3.87,7.68,3.02,respectively,P ＜ 0.05).Conclusion Hypertension,diabetes,hyperlipemia,smoking,male and age are all the risk factors of recurrent cerebral infarction.

Pullulan is a linear glucosic polysaccharide produced by the polymorphic fungus Aureobasidium Pullulans, which has long been applied for various applications in medical and food industry due to its security, stability and low adhesive ability.At present, the two problems in restricting pullulan industrial production are the low polysaccharide production and melanin secreted which is hard to erase completely, giving the following process some problem.As a starting point, this review article collects and analyzes the progress on the breeding of pullulan high-yield strain without melanin in recent years, in order to find more efficient strains breeding methods, laying a foundation for further breeding of pullulan high-yield strain without melanin.

AIM: To study the effects of disulfiram/copper complex (DSF/Cu) on ultrastructures and mechan-ical properties of human breast cancer and normal breast epithelial cells by atomic force microscopy (AFM) based on the nanoscale resolution and piconewton force measurement level.METHODS: The change of cell cycle and apoptotic rate of MCF-7 cells and MCF-10A cells induced by DSF/Cu were compared by flow cytometry.The cell surface morphology, ultra-structure, height, width and roughness were detected by AFM.The effects of DSF/Cu on the hardness (Young’s modu-lus) of the 2 kinds of cells were determined by AFM with indentation technique.RESULTS: DSF/Cu significantly in-duced apoptosis of the MCF-7 cells in a dose-dependent manner, whereas had little effect on the MCF-10A cells.The cell cycle analysis showed that DSF/Cu induced G2 /M arrest in the MCF-7 cells, but led to G0 /G1 arrest in the MCF-10A cells.The AFM images showed that the MCF-7 cells shrank and showed smaller and smoother morphology, and the filopo-dia were retracted obviously, even some became into lamellipodia, or disappeared completely after treated with DSF/Cu at concentrations of 400 and 800 nmol/L.The quantitative analysis indicated that the MCF-7 cells showed smaller width and
larger height, and the root mean square roughness and average roughness were decreased significantly in a dose-dependent manner after treated with DSF/Cu at concentrations of 400 and 800 nmol/L.However, little effect in the MCF-10A cells was observed.The biomechanics test at a single cell level demonstrated that the Young’s modulus of the MCF-7 cells and MCF-10A cells were both increased, yet the proportion increased in the MCF-7 cells was much higher than that in the MCF-10A cells after treated with DSF/Cu at concentrations of 400 and 800 nmol/L.CONCLUSION: DSF/Cu has strong antitumor effect on breast cancer with high efficiency and low toxicity by changing the properties of the biomechanics specifically.