Hepatitis B virus infection is still a major public health issue in the world,and antiviral therapy is the key therapeutic regimen to delay disease progression and improve outcome in patients with chronic hepatitis B (CHB).Various international guidelines recommend nucleos(t) ide analogues (NAs) and long-acting interferon as the first-line antiviral therapy.However,long-term administration of NAs has the disadvantages of long course of treatment,low HBeAg seroconversion rate,extremely low HBsAg clearance or seroconversion rate,low safety,and drug resistance.Therefore,it is an important issue to increase the seroconversion rates of HBeAg and HBsAg in treatment-experienced patients and realize clinical cure in the treatment of CHB.In recent years,many global randomized clinical trials including OSST,Switch,and ARES have shown that a combination of NAs and PEG-IFN or sequential therapy with NAs and PEG-IFN can increase the seroconversion rates of HBeAg and HBsAg in CHB patients and realize clinical cure,which provides a new direction for NAs in the treatment of CHB patients.

Objective To investigate the current situation of community nurses′practice environment and work engagement, and to analyze the impact of practice environment on work engagement. Methods Totally 380 community nurses in 26 community health service institutions were investigated with Practice Environment Scale of the Nursing Work Index (PES-NWI) and Utrecht Work Engagement Scale (UWES). Results The effective questionnaires rate was 88.95%(338/380). The total of PES-NWI was 50-120 (90.542±12.095) scores, the different dimension from high to low were medical cooperation,nursing managers' ability and leadership style, high quality nursing service basis, nurses in hospital affairs, staffing and resource adequacy:(3.213 ±0.510), (3.048 ±0.404), (3.015 ±0.419), (2.739 ±0.494), (2.693 ±0.549) scores. The total of UWES was 17-88 (52.189±19.610) scores,the different dimension from high to low were activity, focus, dedication:(3.556±1.380), (3.493±1.389), (3.346±1.475) scores.Nurse practice environment ofnurses in hospital affairs and high quality nursing service basis had significant prediction effect on community nurses′work engagement, P<0.01. Conclusions It exists closely correlation between professional practice environment and work engagement. Community hospital managers should reasonable allocation of personnel and materials, provide equal participations in hospital affairs platform, meet the needs of nurses in different levels of education and learning, and perfecting the community nurses performance appraisal, in order to enhance community nurses' work engagement degree.

Objective:To study the effect of the three kinds of EE on the cognitive function and the expression of SYN and MAP-2,and the dentritic growth of pyramidal cells of the cerebral cortex in rats.Method:Forty-eight male SD rats were divided into preserving the physique EE group (EE1),preserving the spirit EE group (EE2),preservation for both physique and spirit EE group(EE3) and standard group (SE),12 rats in each group.Rats were put into the three kinds of EE or standard cages after pre-training.The environmental enrollment lasted for 14 days and followed by a 6-days Morris water maze test.After the Morris water maze test,all the rats were sacrificed for histological study,including using the immunohistochemistry method to detect the expression of SYN and MAP-2,and using the Golgi-Cox staining to study the dentritic growth of pyramidal cells in cerebral cortex.Result:In the Morris water maze,the EE3 group exhibited shorter escape latency than the MCAO+SE group (P＜0.05) on day 5,while no significant differences were seen for the time spent in the target quadrant among the 4 groups (P＞ 0.05).The results of immunohistochemical staining of SYN showed that the expression of SYN was the lowest in the SE group,and there was no significant difference between EE1 and EE3 groups but significantly higher than the EE2 group.The expression of MAP-2 was the lowest in the SE group,and there was no significant difference of expression between EE1 and EE2 groups but significantly lower than the EE3 group.The results of Golgi-Cox staining showed that there was no difference of the dentritic branch among groups in mPFC (P＞ 0.05) while the spine density of the EE1 group was significantly greater than that of the SE and EE2 groups (P ＜ 0.05),but significantly lower than that of the EE3 group (P ＜ 0.05).Conclusion:Two weeks of preservation from both physique and spirit EE can improve the cognitive function,and promote the expression of MAP-2 and SYN and the dentritic growth of pyramidal cells in normal rats.

Objective To improve the efficiency,repeatability,expansibility and maintainability and reduce the construction and maintenance cost of the PACS.Methods Struts and Hibernate frame works based on MVC and Object-Oriented Analysis(OOA) were used to build PACS.Results It saved more time for developers,and promoted the development efficiency.Conclusion It is rapid and efficient to use Struts and Hibernate frame in building PACS.[Chinese Medical Equipment Journal,2008,29(2):55-57]

Objective To discuss the problems in the development of enterprise -Web PACS, and find the solutions. Methods The author applied the standpoint of software engineering, and used the experience of other enterprises to find a fast, low-cost, well-maintainable, well-expansible way in development of enterprise-Web PACS. Results The solution is a reasonable development method for enterprise-Web PACS, and the more big the project is, the more obvious the advantage is. Conclusion It is an effective way of developing enterprise-Web PACS to use the reasonable software structure and good development platform and advanced development framework in increasing the software reusability, maintainability, improving the capacity of the secondary development ability.

Objective To investigate the quality of Pulsatilla chinensis from different sources on reference of pulchinenoside B4 as the index. Methods Five kinds of Pulsatilla chinensis herbs and cut crude drug were purchased from Chinese herbal medicine market in Bozhou,and Wild Pulsatilla chinensis were collected from Chuzhou. The content of pulchinenoside B4 were determined by HPLC. Results Linear relationship was good within 0.312 5～10 ?g,the regression equation was Y=276 350X -12 180,R2= 0.999 6. Conclusion The differences of pulchinenoside B4 from different sources of Pulsatilla chinensis varied greatly.

Objective To optimize the extracting conditions of polysaccharide from Imperata Cylindrica and establish a suitable method for its content determination. Methods Based on the qualitative yield of polysaccharide extraction, a orthogonal test was employed to evaluate the effect of four factors including extracting temperature, extracting time, the extraction times and the ratio of material to liquid. The phenol-dense sulphuric acid method was applied for the content determination of polysaccharide. Results The times of extraction and the extracting temperature influenced the content of polysaccharides mostly, while the duration of extraction and the amount of water showed little influence. Conclusions The optimum extraction condition was refluxing and extracting for 3 times at 85 ℃ for 3 hours, and with 15 folds of water for every time. The contents of polysaccharide in Imperata Cylindrica collected from two different places were above 0.15%.

Objective To prepare and identify monoclonal antibodies (mAb) against histidine-tag (His-tag ) .Methods Balb/c mice were immunized with polypeptides containing 15 histindine(His)-coupled BSA and this fusion was prepared according to con-ventional methods .Indirect ELISA was used to screen the positive clones and limited dilution for further cloning .After purified with Protein G affinity chromatography ,these antibodies for His-tag were detected for antibody titer ,relative affinity as well as subtypes by using ELISA .The specificity of these mAb was identified by ELISA and Western blotting analysis .Double-antibody sandwich ELISA was composed of these mAb paired with the corresponding recombinant protein of specific antibody ,which was used to de-tect the recombinant protein quantitatively .Results 5 hybridoma cell lines stably secreting anti-His-tag IgG1(κ) were screened .A-mong these antibodies ,1-G2 was of the highest affinity ,reaching 1 .27 × 1010 ,which could combine with different recombinant pro-teins containing His-tag in the experiment of ELISA and Western blotting .1-G2 also could be used to detect recombinant PCT pro-tein containing His-tag quantitatively by using double-antibody sandwich ELISA with antibody of PCT ,the sensitivity of detection reached 4 .6 ng/mL .Conclusion The mAb against for His-tag with high specificity ,affinity and secreted stably are successfully prepared .This prepared antibody could be used in ELISA and Western blotting to detect a variety of His-tag .

Objective To observe the protective function of murine compact bone derived-mesenchymal stem cells(MSCs) on bleomycin-induced lung injury.Methods MSCs were isolated from the mouse compact bone and then cultured.The immunophenotype and differentiation potential of MSCs were identified by flow cytometry and inductive culture.56 female C57BL/6 mice were assigned into eight groups(7 each): normal group,busulfan intraperitoneal administration group(BUS),bleomycin-induced lung injury group(BLM),bleomycin-induced lung injury and busulfan intraperitoneal administration group(BLM+BUS),BLM challenge and MSCs treatment group(BLM+MSCs),BLM challenge and busulfan and MSCs administration group(BLM+BUS+MSCs).According to infused cell number,BLM+MSCs and BLM+BUS+MSCs group were again respectively divided to two subgroups: BLM+MSCs 1 group(5?105 MSCs) and BLM+MSCs 2 group(2.5?105 MSCs),and BLM+ BUS+MSCs 1 group(5?105 MSCs) and BLM+BUS+MSCs 2 group(2.5?105 MSCs),respectively.The mice were sacrificed 14 days after MSCs infusion,and their lungs were removed for pathological analysis and quantification of hydroxyproline.Results Compact bone derived-MSCs were fibroblast-like cells,positive for Sca-1,CD44,CD29,and CD105,but expressed no CD34,CD45,CD11b and CD31.They could differentiate into adipocytes and osteoblasts in vitro.Compact bone derived-MSCs infused by tail vein were capable of protecting lung from injury.In BLM+MSCs group,2.5?105 MSCs infusion demonstrated more efficient protective activity than that of 5?105 MSCs;the lung injury was less severe in BLM+BUS+MSCs group than that in BLM +MSCs group.The content of hydroxyproline in lung tissue of normal,BUS,BLM,BLM+BUS,BLM+MSCs 1,BLM+MSCs 2,BLM+BUS+MSCs 1 and BLM+BUS+MSCs 2 group was 0.72?0.05,0.79?0.10,1.37?0.09,1.22?0.16,1.24?0.14,1.01?0.15,1.03?0.19 and 0.98?0.12?g/mg,respectively.The content of hydroxyproline increased in BLM and BLM+BUS group compared with that in normal group(P

Objective To seek for a new method in the treatment of devided nevus of the eyelid. Methods On the outside (or the inside) of the lesion, using the level of canthi externa (or inner) as the center, a hatchet skin flap was designed on the upper and lower eyelids, respectively, which had the same pedicle and proportion each other. "The cutting edge" of the skin flap nearby the side of diseased region should be extended to the 1/2 transverse diameter of the lesion so as to make it to be a figure of hatchet. The skin flap should be anatomized from the fat level, which revolved the defect region to cover the wound surface. Results This method was performed in 9 cases of devided nevus of eyelid. The size of their defected areas (eyes being closed) ranged from 1.0 cm ? 1.0 cm to 2.5 cm ? 2.0 cm. All of the skin flaps were completely survival and achieved aesthetic contouring results. Conclusions The method of hatchet skin flap is safe and simple, with satisfactory effect, similar external appearance in color and texture compared with adjacent normal skin. Both the patients and their families are satisfied with the results. Therefore, it is an efficient approach in treating devided nevus of eyelid.