In the perspective of new media , has carried on the review to the current situation of medical students′life consciousness , and puts forward the nationwide medical students life education of subjectivity , and open features , explore “four in one” mode of medical students′life education , namely:the use of new media inte-gration of curriculum resources , consolidate the first classroom; using new media to expand audience , strengthen education;using new media foil emotional rendering , rich campus culture;using new media development hot spec-ulative , vowed to cultural practice .

0.05).CONCLUSION:Chitosan gynecologic suppository is safe,effective and more receptive for the patients,and the resistance is not easily produced for treatment of candidal vaginitis and bacteroidal vagina disease.Its advantage is that the patients can be treated without complete laboratory examination.

With the intensification of population floating in China, there has been a growing demand for ecdemic medical care. Because basic medical insurance in China conduct localized management, the differentiation between reimbursement policy and level in different areas result in the difficulty of immediate settlement. The great quantity of floating population are faced with rather heavy personal burden when need medical care at different locations, which to some extent restrict in-time healthcare for floating population. On the basis of analyzing the features of endemic medical care for floating population, it described three mode of typical immediate settlement on ecdemic medical care, discussed the main problems in restricting the flowing population get immediate settlement at different locations and put forward suggestions on improving the immediate settlement at different locations.

· Mesenchymal stem cells ( MSCs ) are a population of multipotent stem cells with various neurotrophins from bone marrow which are widely used in tissue, cell repair and alternative research.Recently, some researches have shown that MSCs could enhance the viability of neurons under a pathological circumstance by secreting some neurotrophins. So the neuroprotection of MSCs can provide a new method of the treatment on retinopathy that it possible to promote cells survial and functional recovery.Here we make a brief review on the secretory function of neurotrophin and neuroprotective effects of MSCs on retinal cells and its application in the treatment of retinal disease.

In order to improve the optimum temperature of lipases, The Penicillum expansum lipase (PEL) gene was mutated by site-directed mutagenesis using overlap extension PCR technique. The recombinant plasmid pPIC3.5K-lip-E83V containing matant gene was expressed in Pichia pastoris GS115. The comparison experiments of the mutant PEL-E83V-GS with the wild-type PEL-GS showed that: the optimum temperature of the mutant (45℃) was higher by 5℃ than that of the wild type. The thermostability of the mutant was similar to the wild type. The enzymatic activity of the mutant was 188 U/mL at 37 ℃, which was 80% that of the wild type at the same conditions. The hydrophobic interaction may be enhanced in the surface region by the hydrophilic amino acid, Glu substituted with the hydrophobic amino acid, Val, and be responsible for the improvement of optimum temperature.

re serious OSAHS would have more serious and complex coronary artery lesions.

Objective:To establish an in vitro root canal model infected by Enterococcus faecalis and to observe the morphology, distribution and relative position of Enterococcus faecalis in infected root canals.Methods: Ten human healthy premolars extracted for orthodontic reasons were collected. Following sterilization , a total of 5 specimens were aseptically transferred to separate Eppendorf tubes containing 1. 5 mL brain-heart infusion broth (BHI) inoculated with 0.1 mL Enterococcus faecalis suspension that had been adjusted to Mcfarland 5, and were incubated at 37℃ for 21 days. The other 5 specimens were as controls. The roots of all specimens were then split into two halves along the mesiodistal axis. One half was processed with light microscopic ( Brown & Brenn stain) to check the bacteria in dentinal tubules, and the other was observed with SEM to investigate the bacterial status in infected root canals. Results: Enterococcus faecalis could penetrate into the dentinal tubules about 330-1 000μm. A dense bacterial aggregation composed of Enterococcus faecalis and amorphous matrix was observed in the apical third of the root canals, whereas Enterococcus faecalis were seen free-floating or planktonic in the crown and middle third of the root canals . No microorganisms were found in the root canals of the controls. Conclusion:Enterococcus faecalis could form bacterial biofilm on the root canal walls and penetrate into the dentinal tubules. The in vitro model designed was simple, and had good practicability to make a further comparative evaluation of various antimicrobial methods in the reduction of intracanal bacteria.

Objective To investigate the activation mechanism of matrix metalloproteinase-13 zymogen (pro-MMP-13) induced by nitric oxide (NO). Methods Human chondrosarcoma cells (SW1353) were grouped and treated with the NO donor S-nitroso-N-acetyl-penicillamine (SNAP), SNAP + NO scavenger oxyhemoglobin (OxyHb), and SNAP + tissue inhibitor of metalloproteinase material -2 (TIMP-2) respectively. After stimulation, matrix metalloproteinase -13 ( a-MMP-13 ) expression level was detected. Besides, the expression levels of MT1- MMP were detected after SW1353 cells stimulated with SNAP and SNAP + OxyHb, respectively. At last, the activities of the recombinant MMP-13 (r-MMP-13) were detected after r-MMP-13 stimulated with SNAP, recombinant MT1-MMP (r-MT1-MMP) and r-MT1-MMP + TIMP-2,respectively. Results SNAP increased human chondrocytes a-MMP-13 expression, OxyHb and TIMP-2 inhibited a- MMP- 13 expression. SNAP also increased the expression of MT1- MMP levels, OxyHb inhibited the expression of MT1-MMP. r-MT1-MMP activated the r-MMP-13, but SNAP did not, TIMP-2 inhibited the activity of r-MMP-13 induced by r-MT1-MMP. Conclusions NO can not directly activate pro-MMP13 by the role of S-nitroso-(S nitrosylation). MT1-MMP mediates the activiation of pro-MMP-13 induced by NO.

Carcinogenesis is a multistep process that a couple of genes involve in the initiation of this disease.As a pivotal hallmark of cancer, the genomic instability ensues in which genetic alterations when this process was initialized and developed. With the increasing number of studies on genomic instability, the scientists pay more attentions on its biological function at post-genomic era. Genomic instability in various carcinomas is associated with broken telomere, gene modification, and contributes to the dysfunction of DNA damage and repair pathways.This review focus on the factors involved in genomic instability, as well the current detection methods of genomic instability and their clinical application.

Objective To evaluate the efficacy and safety of HyperCVAD/HDMTX-L regimen as salvage treatment for patients with diffuse large B-cell lymphoma. Methods A retrospective study was made to analyze the efficacy and adverse reaction of HyperCVAD/HDMTX-L regimen as salvage treatment for 54 patients with diffuse large B-cell lymphoma. 27 cases were divided in CHOP class scheme ineffective group, 24 cases in recurrence group, HyperCVAD/MA regimen were as the control group. The efficacy in the treatment of 4 cycles, side effects of all cycles and 3-year progression free survival rates of the two regimens were compared. Results In CHOP class scheme ineffective group, efficiency rate of HyperCVAD/HDMTX-L was 59.3%(16/27), 3y PFS rate was 73.3%, efficiency rate of HyperCVAD/MA was 61.9 % (13/21), 3y PFS rate was 61.5%. There was no significant difference in efficiency and PFS rate between the two groups (P>0.05). In recurrence group, efficiency rate of HyperCVAD/HDMTX-L was 47.8 % (11/23), 3y PFS rate was 54.5 %, efficiency rate of HyperCVAD/MA was 45.5 % (10/22), 3y PFS rate was 50.0 %, there was no significant difference in efficiency and PFS rate between the two groups (P> 0.05). The incidence rates of nausea and vomiting, aleukocytosis, thrombocytopenia, hemorrhage associated with chemotherapy in HyperCVAD/HDMTX-L group were significantly lower than those in the control group (all P < 0.001). Conclusion HyperCVAD/HDMTX-L regimen maybe replace HyperCVAD/MA as the salvage treatment of diffuse large B-cell lymphoma.