Through its high affinity with membrane receptors, growth factors promote tumor growth, metastasis and an-giogenesis, induce the change of tumor microenvironment and regulate immune response. It has been demonstrated that the serum protein levels of epidermal growth factor and its receptor, transforming growth factors and their receptors, insu-lin-like growth factors, and angiogenesis factors may have predictive value for metastasis and prognosis of breast cancer. Detecting serum levels of growth factors and their receptors which have synergistic effect or interaction with each other may be helpful for predicting the metastasis and progression of breast cancer.

Primary age-related tauopathy (PART) is one of neurodegenerative diseases in the very old people. PART clinically resembles Alzheimer′s disease and its definite diagnose needs pathological identification of neurofibrillary tangles with or without amyloid plaques in the brain. This article reviews the historical evolution, clinical manifestation, pathology and diagnosis of PART in order to provide new insights.

Objective To investigate the influence of RNA interference targeting ORC1 gene on the phenotype of rat vascular smooth muscle cells (VSMCs). Methods VSMCs were transfected with siRNA targeting ORC1 gene by liposome. The expression of ORC1 protein was detected by Western blotting. The changes of phenotype-dependent markers was analyzed by flow cytometry. Results After transfected of siRNA targeting ORC1 genes, the expression of ORC1 was lower than that in the control groups (non-transfection and negative siRNA). ORC1 gene silencing increased the expression of VSMC contractile markers ?-SM actin and SM-2, and decreased the expression of synthetic marker osteopontin. ORC1 gene silencing greatly affected VSMC differentiated morphology. Conclusion ORC1 gene silenced by RNA interference can mediate the transition of VSMCs from synthetic phenotype to contractile phenotype.

90 extracted single rooted human teeth were inoculated with E.faecalis.The cannals of the teeth were irrigated with MTAD, 5.25% NaClO,compound chlorhexidine gargle,tinidazole mouthwash,distilled H2 O(infection control)and autoclave followed by distilled H2 O(autoclaving control),respectively(n =1 5).Then E.faecalis infection of the samples were examined.The results showed that MTAD had significantly greater antibacterial effects than 5.25% NaClO,tinidazole mouthwashes,compound chlorhexidine gargle and tinidazole mouthwash(P <0.05).There was no significant difference between each 2 of the other 3 irrigants.

Objective To study the chemical components from the pericarps of Juglans mandshurica with anti-tumor activity.Methods It showed that pericarps of J.mandshurica had a good performance in treating cancer and low toxicity from CHCl3 and EtOAc portions by a lot of pharmacological experiments and modern clinical application in the past.Compounds were isolated by chromatography on silica gel columns and AB-8 macroporous resin.On the basis of spectral evidences including 1D-NMR and 2D-NMR,the structures of these compounds were determined.Results These compounds from CHCl3 portion were identified as 20(S)-protopanaxadiol-3-one(1),dammara-20,24-dien-3?-ol(2),galeon(3),juglanin A(4),2?,3?,23-trihydroxy olean-12-en-28-oic acid(5),2?,3?,23-trihydroxy urs-12-en-28-oic acid(6),oleanolic acid(7),ursolic acid(8).Conclusion Compound 1 is a new natural product.Compounds 2 and 5-8 are isolated firstly from the plants of Juglans L.which are due to pentacyclic triterpane.Compound 3 is isolated from the pericarps of J.mandshurica for the first time.

Objective To explore the relationship of attentional function,coping style and depressive symptoms in depression disorders.Methods Sixty-eight depression disorder and seventy-one normal healthy people were assessed by Hamilton depression scale(HAMD),coping style questionnaire and digit span forward.Independent samples t test and hierarchical multiple linear regression analysis were used to analyze all data.Resuits Compared with the control group,depressed patients had higher blaming(0.57 ± 0.29 vs 0.29 ± 0.25,P ＜0.01),wishful thinking(0.55 ± 0.22 vs 0.42 ± 0.26,P ＜ 0.01) and avoidant (0.63 ± 0.18 vs 0.46 ± 0.21,P ＜0.0l),lower problem solving (0.67 ± 0.23 vs 0.80 ± 0.18,P ＜ 0.01),rationalization (0.51 ± 0.20 vs 0.59 ±0.06,P＜0.01) and poorer attentional function(6.90 ± 1.65 vs 7.54 ±0.98,P＜0.01) ;but there was no significant differences in support seeking score.Hierarchical multiple linear regression analysis revealed that,even when controlling for age,sex,low score of support seeking were independently predicted attentional function impairment (β =-0.25,P＜0.05).In addition,the use of support seeking was found to mediate the relationship between digit span forward and retardation completely.Conclusion Retardation indirectly influence the attention function by the mediating of support seeking.

Objective To explore the relationship between polymorphisms of brain-derived neurotrophic factor(BDNF) gene (rs6265 and rs12273539) and cognitive impairment in depressive disorder.Methods All participants including 73 depressed patients and 71 healthy controls were received clinical and cognitive assessments at admission,and then the depression group was divided into two groups by the score of Beijing version of the Montreal Cognitive Assessment (MoCA-BJ).One was depression with cognitive dysfunction group,and the other was depression without cognitive dysfunction group,with 36 and 37 cases respectively.The polymorphisms of BDNF gene was identified by PCR-RFLP.Results No significant difference for rs6265 gene types(x2=5.18,P=0.27),A allele carries (x2 =4.28,P=0.12) and G allele carries (x2 =1.95,P=0.38) among the three groups.There was no significant difference for rs12273539 gene types,allele carries between patients without cognitive dysfunction and controls groups(P＞0.05).There was much more C-allele carries (x2=5.40,P=0.02)and less T-allele(x2=6.06,P=0.01) in patients with cognitive disorder than those in health and it was different in rs12273539 gene types between the two groups(x2=8.38,P=0.02).CC/CT/CT gene type performed different on attention function (P＜0.01).Conclusion BDNF rsl2273539(T/C) gene type has relationship with the onset of cognitive disorder in depressed patients,and there are more C-allele carries in depressive patients.The depression patients with CC gene type are worse on the attention function impairement.

Objective To investigate the characteristics of cognitive dysfunction in patients with depression,and identify the correlation between cognitive dysfunction and serum brain-derived neurotrophic factor (BDNF) level.Methods All participants including 73 depressed patients and 71 healthy controls were received clinical and cognitive assessments at admission,the depression group was divided into two groups by the score of Beijing version of the Montreal Cognitive Assessment (MoCA-BJ),one was depression with cognitive dysfunction group which had 36 cases,the other was depression without cognitive dysfunction group which had 37 cases.Concentration of BDNF was measured by the ELISA method.Results Cognitive impairments were found in numerous cognitive domains of depressed patients,including visuospatial and executive abilities,attention,delayed recall and orientation(P ＜ 0.05).The incidence of cognitive dysfunction in depression was 49.3％.There was not significant difference between two depressive groups (depression with cognitive disorder(12.08 ± 7.08)ng/ml,depression without cognitive disorder (12.22 ± 7.93)ng/ml,P ＞ 0.05),and the levels were significantly lower than that in healthy people ((16.55 ± 7.47) ng/ml,P＜ 0.01),and serum BDNF level had no positively relevant with different cognitive functions (P ＞ 0.05).Conclusion Depression patients have cognitive dysfunction in numerous cognitive domains,including visuospatial and executive abilities,attention,delayed recall and orientation.Serum BDNF level is closely related with depression,while,it has no obvious relationship with cognition function in depression.

Sal-like 4 (SALL4) plays an important role in promoting the cellular proliferation and maintaining the pluripotency of embryonic stem cells and tumor cells.In fully differentiated cells,the expression of SALL4 is silenced or down-regulated.However,the expression of SALL4 is found to be restored or up-regulated in a variety of non-germ cell tumors.Besides,the expression of SALL4 is often associated with disease progression,treatment effect and prognosis.Therefore,examining the expression level of SALL4 will be of great importance in the diagnosis of disease and monitoring the disease progression for non-germ cell tumors.

The rutile structure titanium oxide (Ti-O) film was prepared on the pure titanium material TA2 (99.999%) surface by the magnetic filter high vacuum arc deposition sputtering source. The method can not only maintain the material mechanical properties, but also improve the surface properties for better biocompatibility to accommodate the physiological environment. The preparation process of the Ti-O film was as follows. Firstly, argon ions sputtered to the TA2 substrate surface to remove the excess impurities. Secondly, a metal ion source generated Ti ions and oxygen ions by the RF discharge. Meanwhile a certain negative bias was imposed on the sample. There a certain composition of Ti-O film was obtained under a certain pressure of oxygen in the vacuum chamber. Finally, X-ray diffraction was used to research the structure and composition of the film. The results showed that the Ti-O film of the rutile crystal structure was formed under the 0.18 Pa oxygen partial pressure. A Nano scratch experiment was used to test the coating adhesion property, which demonstrated that the film was stable and durable. The contact angle experiment and the platelet clotting experiment proved that the modified surface method had improved platelet adhesion performance, and, therefore, the material possessed better biocompatibility. On the whole, the evaluations proved the modified material had excellent performance.
Heart Valves ; Heart, Artificial ; Ions ; Materials Testing ; Oxygen ; Surface Properties ; Titanium ; X-Ray Diffraction