ObjectiveTo develop a method of location of prenatal female mouse reproductive tract based on paraffin block serial sections of female fetuses, and get high quality paraffin sections of fetuses containing female reproductive tract (FRT).And to investigate the role of Wnt5a during the development of FRT of prenatal mice. Methods The sex of fetuses at gravidity 15.5 days( G15.5d), G17.5d, G19.5d) and G21.5d was identified by polymerase chain reaction(PCR),and the female fetuses were embedded in paraffin block, the specimen was sectioned serially . One of every four sections was stained by hematoxylin-eosin(HE), and the next one being used later.The images of specimen were taken with digital camera and the serial sections were obtained. The paramesonephric duct /uterus were located and recognized. Immunohistochemistry was used to determine the location and intensity of Wnt5a staining in the middle of the paramesonephric duct / uterus. Results The morphology of the paramesonephric duct /uterus was recognized first and the sections of fetuses with paramesonephric ducts were obtained. The intensity of Wnt5a immunohistochemical staining was increased from G15.5d to G21.5d in mesenchymal cells(P<0.01).Conclusion Wnt5a plays a marked role in early period of female mouse reproductive tract, and is possible to be a key factor to induce uterus differentiation and development.

Objective To compare the overall diagnostic accuracy of MRCP with EUS for the detection of choledocholithiasis and malignant obstruction in patients with suspected biliary obstruction.Methods A fully recursive literature search was conducted in The Cochrane Central Register of Controlled Trials CENTRAL,MEDLINE or PUBME (1980-2012),EMBASE (1980-2012),OVID Database (1980-2012),CBM (1980-2012),VIP database (1989-2012),Chinese journal of full-text database (CNKI) (1980-2012),and WANFANG database(1980-2012).The prospective diagnostic studies which evaluated or compared the diagnostic accuracy of MRCP and EUS were included combined with manual searches.We also searched the references of all included articles of important meetings and journals.QUA-DAS items were used to evaluate the quality of the included studies.SEN,SPE,+ LR,-LR and the areas under SROC were detected,then t-test was used to evaluate whether statistically significant difference existed between EUS and MRCP.Results Thirteen studies including 1200 cases were recruited.The overall pooled sensitivities of MRCP and EUS for the detection of choledocholithiasis were 0.870 (95％ CI:0.826-0.906)and 0.935 (95％ CI:0.90-0.96) respectively,whereas their specificities were 0.952 (95％ CI:0.926-0.971) and 0.947 (95％ CI:0.920-0.967),respectively.The overall pooled positive likelihood ratio for MRCP and EUS were 14.055 (95％ CI:6.259-31.561) and 16.653 (95％ CI:6.896-40.212),respectively,with the corresponding negative likelihood ratio of 0.177 (95％ CI:0.108-0.290) and 0.076 (95％ CI:0.049-0.118),respectively.Areas under the ROC curve were 0.9693 and 0.9771,respectively.There were no statistically significant difference for sensitivity (0.84 ± 0.16 vs 0.93 ± 0.07,P =0.108) and specificity (0.93 ±0.10 vs 0.90 ±0.15,P =0.555) between MRCP and EUS.The overall pooled sensitivities of EUS and MRCP for the detection of malignancy were 0.959 (95％ CI:0.908-0.987),and 0.805 (95％ CI:0.724-0.871),respectively,whereas their specificities were 0.975 (95％ CI:0.954-0.988) and 0.927 (95％ CI:0.897-0.951),respectively.The overall pooled positive likelihood ratio for EUS and MRCP were 23.398 (95％ CI:12.987-42.155) and 13.448 (95％ CI:4.961-36.456),respectively,with the corresponding negative likelihood ratio of 0.059 (95％ CI:0.028-0.122) and 0.134(95％ CI:0.046-0.391),respectively.Areas under the ROC curve were 0.9870 and 0.9686,respectively.There were no statistically significant differences for sensitivity (0.95 ± 0.55 vs 0.88 ± 0.14,P =0.22) and specificity (0.96 ±0.03 vs 0.91 ±0.11,P =0.31) between MRCP and EUS.Conclusion MRCP and EUS are both valuable in differential diagnosis of biliary obstruction caused by choledocholithiasis or malignant lesions.

Objective:To observe the proliferation and the free intracellular calcium ion concentration of osteoblast under the effect of static magnetic field and discuss the possible mechanism of the static magnetic field on promoted the proliferative function. Methods: The MTT assay was used to measure the rate of the proliferation on different magnetic field intensity(0, 0.026, 0.044, 0.090 T)and action time(24, 48, 72 h).The fluorescence double wavelength spectrophotometer was used to measure the concentration of intracellular calcium ion. The data obtained were analyzed for ANOVA and t-test using SPSS 11.0 software package. Results: Osteoblasts in group 0.044 T appeared significant proliferation within 48 h(P

G-protein-coupled receptors (GPCRs) are major targets for drug discovery. The regulator of G-protein signaling (RGS) proteins is a recently identified protein family,which strongly modulates the activity of G proteins. RGS proteins accelerate the deactivation of G proteins to reduce GPCR signaling; however, some also have an effector function and transmit signals. Combining GPCR agonists with RGS inhibitors should potentiate responses and markedly increase the regional specificity of agonist. In the central nervous system, RGS proteins have unique tissue distributions and are strongly regulated by signal transduction events. Thus the diversity of RGS makes them attractive targets for pharmacotherapy of neurological disorders.

ObjectiveTo design the scale of death attitude for Chinese nurses and evaluate its validity and reliability.MethodsThe scale draft was formed through the literature review,the formal scale was got via expert consultation and interview survey of 20 cases of small sample.120 clinical nurses were selected for investigation.Then item analysis,factor analysis,correlation analysis and reliability analysis were applied to establish the scale′s validity and reliability.ResultsThe nursing staff death attitude scale consisted of 25 items,the varimax rotation factor analysis of the scale identified seven principal factors and explained for 63.732％ variances.The correlation coefficient between each item and its domain was 0.498～0.808,the Cronbach′s α coefficient of five domains was 0.595～0.774,the Cronbach′s α and split-half coefficient for the whole scale were 0.824 and 0.868 respectively.ConclusionsThe scale has high reliability and validity,and it can be the effective test instrument for death attitude of nurses in China.

BACKGROUND: Adipose-derived stem cells (ADSCs), a kind of adult stem cells, possess plasticity and can be induced into myocardial cells under certain conditions. Autologous ADSCs transplanted into the infarct area can differentiate into myocardial cells and vascular endothelial cells to construct new vessels and thereby improve cardiac pump function. OBJECTIVE: To study the factors that influence ADSCs differentiation and transplantation and the current clinical and laboratory research progress of ADSCs transplantation for treatment of cardiomyopathy.METHODS: A computer-based retrieval was performed in Medline (between January 1990 and April 2010), PubMed database, the China Biological Medicine Database (CBM) (between January 1990 and April 2010), and China National Knowledge Infrastructure (CNKI) with the keywords adipose-derived stem cells, myocardial cells, cell differentiation, cell transplantation, cardiomyopathy treatment.RESULTS AND CONCLUSION: A total of 30 articles, consisting of 6 reviews and 24 randomized controlled trials, were obtained. At present, there have been uniform methods of ADSCs isolation and culture, and ADSCs can be effectively proliferated in vitro, but there have been no direct methods to identify these stem cells. ADSCs differentiation can be induced both in vitro and in vivo, besides, with a characteristic of early differentiation. ADSCs transplantation is a more conductive therapy for myocardial disease compared with bone marrow stem cells (BMSCs) transplantation. Different ADSCs transplantation methods should be carried out in different types of cardiomyopathy. Stem cell labeling technique can help to dynamically monitor implanted in vivo. Transplantion of autologous ADSCs is a new way to treating cardiomyopathy. However, for successes in clinical practice, the method to inhibit tumor cells-promoting characteristics is needed to ensure long-term safety of the patients receiving ADSCs transplantation.

We developed a three-dimensional finite element model of the shoulder glenohumeral joint after shoulder arthroplasty including humerus shaft, scapular, scapular cartilage and eight muscles, while each of the muscles was simulated with 50 spring elements. To reduce the element number and improve the analytical precision, we used mixed tetrahedral and hexahedral elements in the model. We then used the model to calculate the biomechanics of the shoulder glenohumeral joint after hemiarthroplasty during humeral external rotation. Results showed that the maximum joint reaction force was 374.72 N and the maximum contact stress was 6. 573 MPa together with the contact areas at 40 degrees external rotation. These might be one of the reasons for prosthetic disarticulation, and would provide theoretical bases to prosthetic design.
Biomechanical Phenomena ; Finite Element Analysis ; Humans ; Humeral Head ; anatomy & histology ; Models, Anatomic ; Prosthesis Design ; Range of Motion, Articular ; Rotation ; Shoulder Joint ; anatomy & histology

Objective To explore the relatianship of social anxiety and parental rearing style and self-es-teem among medical students, and to provide theoretical guidance for students' mental health. Methods 346 medical students were assessed with interaction anxiousness scale(IAS), Egala minnen on bardndosnauppforstran (EMBU) and self-esteem scale (SES). Results Medical students' social anxiety was negatively correlated with emotional warmth and understanding of parents (FF1, MFI) (r=-0.162,-0.150, P<0.01) and self-esteem (r -0.355, P <0.01), and positively correlated with mother's over-interference, over-protection, refusal, rejection and favoring subject(MF2, MF3, MF5) (r=0.137,0.127,0.116, P<0.05). Stepwise regression analysis re-vealed that father's warmth and understanding and father's over-protection and self-esteem enter regression equa-tion and adjusted R square was 0.047 and 0.123. Conclusion The medical students' social anxiety was influ-enced by EMBU and SES, but the level was lower.

Objective To observe the effect of dexmedetomidine on patients′ inflammation during CPB and protective effect on kidney and liver. Methods 60 cases undergoing cardiac valve replacement under CPB were randomly divided into NS group and Dex group. Blood samples were taken before induction , before ascending aorta blocked, end of CPB, 24, 48 and 72 hours after operation. The serum level of HMGB-1, TNF-α, IL-6, BUN, Cr and ALT are tested. Blood WBC and N% are also counted. Results WBC, N% and HMGB-1, TNF-α, IL-6, BUN, Cr in Dex group significantly decreased at time point T2 ~ T6 (P < 0.05) compared with NS group. But ALT in Dex group only decreased at time point T 2 and T5 compared with NS group (P < 0.05). Conclusion Dexmedetomidine can significantly decrease inflammatory factor during CPB and improve renal function after surgery.

Objective:To investigate the rationality of off-label use of tacrolimus combined with Wuzhi capsules in a membranous nephropathy patient. Methods:Based on the related literatures, the application rationality of tacrolimus combined with Wuzhi capsules in a membranous nephropathy patient was analyzed. Results:The combination of tacrolimus and Wuzhi capsules against membranous nephropathy was an off -label drug use, however, it showed certain clinical rationality and economic efficiency. Conclusion:Off-label drug use commonly exists in clinics. Clinical pharmacists should provide evidence support for off-label drug use through searching and analyzing clinical evidences and closely monitoring therapeutic outcome.