China ; Humans ; Immunization Programs ; Poliomyelitis ; prevention & control ; Poliovirus Vaccines ; administration & dosage

Objective To investigate the relationship between ?-catenin gene expression and the mechanism of tumorigenesis, development and metastasis of human nasopharyngeal carcinoma. Methods RT-PCR method was used to detect the mRNA expression of ?-catenin in normal human nasopharyngeal tissues and nasopharyngeal carcinoma. Results The results showed that ?-catenin expression in 11 out of 15 nasopharyngeal carcinoma specimens was decreased (73.3%). Conclusion The abnormal expression of ?-catenin changed in the normal adhesive function and the signal transduction pathway of the cell in human nasopharyngeal carcinoma, indicating that the expression level of ?-catenin was a biological marker of tumorigenesis and development of human nasopharyngeal carcinoma.

Mixed reality technology can achieve a 3D reconstruction of the patient's imaging data and organically combine the real scene. This allows to simulate a real medical operation in clinical teaching. Combined with large data analysis, mixed reality technology allows to build situational awareness data models, thus providing data support for teaching interaction and disease simulations. In the present work, the application of mixed reality technology and situational awareness in clinical teaching of cardiac macrovascular surgery is explored innovatively. These technologies open a new avenue for teaching, solving the issue that stymies traditional teaching approaches and improving the teaching efficiency. It is thus important to explore and promote the applications of this innovative teaching methodology particularly in clinical teaching.

BACKGROUND:Many patients underwent aspirin anticoagulation in preventing cardiovascular disease before hip and knee replacement. No report addressed the effect of aspirin on blood loss during perioperative stage in patients receiving hip and knee replacement. OBJECTIVE:To observe the effect of perioperative continuous low-dose aspirin anticoagulation application on total hip arthroplasty or total knee arthroplasty. METHODS: A total of 40 patients with primary total hip arthroplasty or total knee arthroplasty were enroled in the Department of Orthopedics, Tianjin First Center Hospital from December 2012 to August 2013. According to anticoagulation scheme, they were divided into two groups (n=20). In the observation group, 100 mg/d aspirin anticoagulation was continuously used before replacement for a long period, and the medicine was not withdrawn except the day of replacement. In the control group, aspirin anticoagulation was not used, and their ages were similar to the observation group. The operation was conducted by the same physician in the observation and control groups. 10 patients received total hip arthroplasty and 10 patients received total knee arthroplasty in both groups. Bleeding was stopped actively during replacement. After replacement, pressurized ice compress was used to reduce bleeding. At 48 hours after replacement, wound drainage, perioperative hemoglobin and the incidence of complications were recorded. Joint function recovery was observed at 3 months of folow-up. RESULTS AND CONCLUSION:Hemoglobin levels before and after operation, postoperative blood drainage at 48 hours, perioperative hemoglobin changes, the incidence of complication, and joint function score at 3-month folow-up did not show significant difference between both groups. These findings indicate that it is safe to use some measures for reducing blood loss and continue low-dose aspirin in the perioperative period. The use of aspirin did not impact blood loss.

Objective To study the value of echocardiogram in preoperative examination for the diagnosis of silent myocardial is-chemia in patients before surgery .Methods 172 patients with surgical preoperative suspected diagnosis of coronary heart disease , were divided into heart valve surgery group (72 cases) and non heart valve surgery group (100 cases) .All of the patients had echo-cardiography and coronary angiography before 2 weeks of operation .We drew a series of analysis to assess the sensitivity、specialty and accuracy of diagnosis of silent myocardial ischemia with regional wall motion abnormality (RWMA) and wall motion score in-dex (WMSI) .Results Coronary angiography as the gold standard of coronary heart disease diagnosis .The sensitivity of RWMA for the diagnosis of silent myocardial ischemia in patients undergoing heart valve surgery group and non heart valve surgery group was 85 .7% and 100 .0% ,while the specificity of RWMA was 100 .0% and 80 .0% ,respectively ,the differences between the two groups had no statistical significance (P>0 .05) .We also drew the ROC curve of WMSI for the diagnosis of silent myocardial ische-mia ,maximum area under the ROC curve of WMSI were 2 .20 and 2 .05 .In patients undergoing cardiac surgery and non-cardiac sur-gery ,the curves indicated that the sensitivity were 79 .7% and 75 .9% ,the specificity were 83 .0% and 67 .7% ,respectively .Area under the ROC curve was 0 .832 and 0 .702 ,but the difference was not statistically significant (P>0 .05) .Conclusion Using RW-MA and WMSI as reference indicators ,surgical preoperative echocardiography in the diagnosis of patients with silent myocardial is-chemia has good sensitivity ,specific ,and accurate ,there is no statistically significant difference between heart valve surgery and non heart valve surgery .

Cardiovascular disease is a major cause of morbidity and mortality in the contemporary society. Cardiac gene therapy has already been investigated in clinical studies profoundly. Adenovirus vector could transfer the gene efficiently, but low organ specificity and immuno- genie properties limited its application, With adenovims vector improved in the last few years, the third adenovims vector is probably the most potential vector systems for cardiovascular disease. This review will give a broad overview of the molecular basis of the adenovims vectors, their advantages, the development of increasingly efficient gene transfer approach, and experimental and clinical studies targeting the heart, application barriers and modified strategies.

Objective To study the interphase FISH of cells from aminotic fluid in the third trimester prospectively. Methods Amniotic fluid (5ml) was obtained in 32 pregnant women in the third trimester who underwent cordocentesis for karyotyping. FISH was performed on uncultured am niocytes and the results were compared with karyotypes. Results Abnormal aneuploid were identified in 6 cases among the 32 women. The FISH results were consistent with the karyotypes. Conclusions Interphase FISH in third-trimester amniocentesis can provide an accurate clinical diagnosis on common aneupoidies.

Apoptosis ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Doxorubicin ; administration & dosage ; analogs & derivatives ; pharmacology ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy ; pathology ; Valproic Acid ; administration & dosage ; pharmacology

To observe the effect of Astragali Radix polysaccharides (APS) on the learning and memory functions of aged rats, in order to explore its mechanism for improving the learning and memory functions. Natural aging female SD rats were selected in the animal model and randomly divided into the control group, the APS low-dose group (50 mg x kg(-1)), the APS high-dose group (150 mg x kg(-1)) and the piracetam-treated group (560 mg x kg(-1)). They were orally administered with the corresponding drugs for consecutively 60 days. Besides, a young control group was set. The learning and memory functions of the rats were tested by the open-field test and the Morris water maze task. The Western-blot method was used to observe the levels of relevant neural plasticity protein N-methyl-D-aspartate receptor (NMDA receptor) in hippocampus, calcium/calmodulin dependent protein kinase II (CaMK II), protein kinase (PKA), the phosphorylation level of CAMP response element binding protein (CREB) and the protein expression of brain derived neurotrophic factor(BDNF). In this study, the authors found that the learning and memory functions and the hippocampus neural plasticity protein expression of the aged rat group were much lower than that of the young control group (P < 0.01). Compared with the aged rat group, the APS group showed the significant improvement in the impaired learning and memory functions of aged rats and the up-regulation in the hippocampus neural plasticity protein expression. The results showed that APS may improve the learning and memory functions of aged rats by increasing the expressions of relevant neural plasticity proteins.
Aging ; drug effects ; metabolism ; psychology ; Animals ; Astragalus Plant ; chemistry ; Brain-Derived Neurotrophic Factor ; metabolism ; Cyclic AMP Response Element-Binding Protein ; metabolism ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Female ; Hippocampus ; drug effects ; metabolism ; Humans ; Learning ; drug effects ; Memory ; drug effects ; Polysaccharides ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate ; metabolism

Objective To obtain the specific antigens of the expressed major capsid proteins from Noroviruses with different sub-genotypes in Beijing area. Methods The full-length genes of the major capsid proteins (VP1)were obtained through the amplification of the VP1 encoding gene in the recombinant plasmids pBST-CR2987(G Ⅱ-3)and pBST-CR2932(GⅡ-4),which represented different Norovirus geno-types. The full-length genes were sub-cloned into the expression vector pET-30a(+),resulting in a recombinant plasmid, with which the BL21 competent cells were transformed, and the expression of the gene was induced by adding IPTG to the growth culture. The expression of the major capsid proteins were analyzed with Coomassie blue staining after SDS-PAGE, and assayed by Western blot with serum from human. Results (1)The major capsid protein genes of CR2987 and CR2932 were sub-cloned into expression vector pET-30a(+). The VP1 encoding genes were 1647 bp in length for CR2987 and 1623 bp for CR2932. The open reading frames(ORF)coded for 549 and 541 amino acids for these two proteins, respectively. (2)The expressed VP1s were present primarily as inclusion bodies,and the maximal amount of the expressed proteins occurred at 4-6 h after IPTG induction.(3)These VP1s could be recognized by specific immune serum against VP1 of Norovirus as well as His-tag antibody. Conclusion The VP1s of CR2987 and CR2932 are expressed in BL21 E.coli cells.The expressed VP1s could react with specific immune serum against VP1 of Norovirus, indicating that the expressed VP1s are of antigenicity.