Objective:To compare the effects on the size and distribution of stress of different adhesives on post-core crown restored posterior stump of teeth dentin, to discover reasonable post-crown adhesive material of posterior stump of teeth post-core crown,by three dimensional finite element analyses. Methods:Establish three dimensional finite element models of maxillary first molar post-core crown by CT scanning, Mimics and Abaqus software,which include post core,crown,tooth root, pericementum,alveolar bone and adhesive material. Divide above models into experimental and control group according to the relative adhesive material. Choose three load spots on the occlusal surface of this model, and exert 80N loading strength on each. Then calculate the peak value and distribution mode of Von mises stress,max-principle stress and shear stress. Results:In the different adhesive material experimental groups,the peak value of the stress on the dentin of the composite resin group was lower than those in zinc phosphate groups. Conclusion:On the condition of this experiment,different adhesives have different effects on the peak value and distribution of the stress on the post-core crown restored posterior stump of teeth dentin.

Glycoprotein N is encoded by glycoprotein N (gN) gene of herpesviruses. The amino acid composition and expression level of this protein vary among difference species of herpesviruses. According to present studies, gN protein is expressed in cytoplasm of host cells, mainly in endoplasmic reticulum. The gN forms a complex with glycoprotein M in host cells. The complex is involved in the processes of viral replication and inter-cellular infection. Moreover, this protein plays a role in immune evasion from host immune system. The study will provide a theoretical basis for further study of herpesvirus gN gene and its encoded protein.
Animals ; Herpesviridae ; genetics ; metabolism ; Herpesviridae Infections ; virology ; Humans ; Viral Envelope Proteins ; genetics ; metabolism

?-Synuclein (?-SYN ) .previously identified as a breast cancer specific gene, has a wildly tumor expression profile mainly in advanced stage. As a special chaperone,?- SYN stimulates the proliferation and metastasis of tumor cells through interacting with estrogen receptor and (or) BubR1. Meanwhile, it is also detectable in the serum or urine from tumor patients, which indicates that?- SYN could be potential as a tumor marker for diagnosis and prognosis.

Objective To observe conditioned enhancement of antibody production against influenza vaccine. Methods 36 female BALB/c mice were injected with 3 μg/mouse influenza virus hemagglutinin (HA) as the unconditioned stimulus (UCS),and camphor odor was served as the conditioned stimulus (CS). After a CS/UCS pairing was made,animals were re-exposed to the CS at Weeks 6. Results Through one conditioned stimulus,the optical density of anti-HA antibody of the conditioned group (Weeks 9:0.68±0.06; Weeks 10:0.60±0.06)was significantly increased compared with the unconditioned group (Weeks 9:0.53±0.06; Weeks 10:0.48±0.04) ( P <0.01). The level of anti-HA antibody of the conditioned group was also significantly greater than other controlled groups( P <0.05). Conclusion Through a single exposure to camphor odor which was paired with immunization of influenza virus HA in a single trial learning protocol,a significant conditioned anti-HA IgG production occurred.

Adult ; Chondrosarcoma ; Female ; Humans ; Middle Aged ; Paranasal Sinus Neoplasms ; Skull Base Neoplasms ; Sphenoid Sinus

Adult ; Aspergillosis ; pathology ; surgery ; Female ; Humans ; Laryngeal Diseases ; microbiology ; pathology ; surgery ; Middle Aged ; Vocal Cords ; pathology

0.05).The gene frequencies of ACG-T235M and ACE-DD plus AGT-TT were significantly higher in the patients with CAD than in the controls respectively(all P

OBJECTIVE:To provide reference for the application of antibiotics based on susceptibility test.METHODS:The problems appeared in the use of antibiotics based on susceptibility test in clinical pharmacy were analyzed and summarized.RESULTS & CONCLUSION:The antibiotics should be used rationally based on susceptibility test so as to improve the rational use of antibiotics.

Previous work showed that there was high ratio of Mycoplasma hyorhinis infection in human gastric carcinoma. P37 protein is a membrane lipoprotein of Mycoplasma hyorhinis. It was reported that P37 inhibited cell adhesion and induced tumor invasiveness. To investigate the function of P37 in cancer development, the p37 gene was subcloned into shuttle vector of pAdTrack-CMV. Linearized pAdTrack-CMV-p37 was co-transformed into BJ5183 cells with adenoviral genomic plasmid pAdEasy-1. The identified recombinant DNA was transfected into 293 cells to package adenovirus. From the supernatant and cell lysis, the presence of recombinant adenovirus P37 was proved by PCR. And then BICR cells with this recombinant adenovirus of P37 were successfully infected. RT-PCR and Western blot demonstrated the transcription and expression of P37 in infected BICR cells. And the soluble P37 protein can be secreted into the culture supernatant of infected BICR cells. In the migration assay in vitro, the number of migration BICR cells infected with Ad-p37 was 52.03% more than that of control. The construction of recombinant adenovirus provided a good tool for studying P37 function and its molecular mechanism, which will be further used for in vivo migration and invasion experiments.

Objective Up to now, the role of Brucea in early embryonic development of mice and its mechanism is still unclear.This paper aims to explore the role of Brusatol in mouse early embryonic development and its possible mechanism.Methods 100 kunming rats of clean grade(80 female rats and 20 male rats) were divided into 6 group: negative control group(no DMSO)、blank control group(culture in fresh CM with equal DMSO)、20nmol/L brusatol treated group、50nmol/L brusatol treated group、100nmol/L brusatol treated group、200nmol/L brusatol treated group(A solution of Brusatol was diluted in CM to concentrations of 20, 50, 100 or 200nmol/L.).Each group used an average of 20 embryos each time, repeated 4 times.Fertilized eggs after cultured 24h, 48h,72h, 96h were respectively 2-cell stage, 4-cell stage,morula and blastocyst stage..The embryo development rate was observed in the culture medium and the optimal concentration was selected, the embryos were collected to analysis the subcellular localization of the Nrf2 by immunofluorescence.The mRNA expression level of Cyclin B, CDK1 and the protein expression of Nrf2 were detected by Q-PCR and western blot respectively.Results In 4-cell stage, the embryo development rates of 20、50、100nmol/L brusatol treated groups[(75.0±2.8)%、(30.4±7.5)%、(4.2±5.9)%] significantly reduced compared with the negative control group[(93.0±2.8)%]、blank control group[(90.9±1.2)%].In morula stage, compared with blastocyst rates of negative control group、blank control group [(83.5±2.1)%、(84.2±1.2)%], 50nmol/L brusatol treated group[(19.3±13.1)%] decreased obviously [(79.00±0.06)% vs 100%, P<0.05].In the cellular immunofluorescence assay, the expression of Nrf2 protein in 50nmol/L brusatol treated group was lower than blank control group(P<0.05).We further found that 50nmol/L brusatol treated group decreased more mRNA levels of Cyclin B[(59.5±9.2)%] and CDK1[(56.0±1.4)%] than blank control group(100%) in G2/M phase(P<0.05).Conclusion In this study, Brusatol mainly affects the cell cycle transformation from G2 to M phase dependent on Cyclin B-CDK1, further inhibiting the development of the embryo through down-regulating Nrf2.