Objective:To evaluate the anti-corrosion property of Ti-Zr alloy fabricated by laser solid forming technic in artificial saliva.Method:The corrosive behavior of Ti-Zr alloy fabricated by laser solid forming was studied by potentiadynamic polarization technique in artificial saliva at 37 ℃(pH=6.8).Ti-Zr alloy formed by casting was applied as the control.With the polarization curves given by the electrochemical corrosive measure system and the picture of corrosive plane given by SEM, the corrosive property of the Ti-Zr alloy were analyzed.Results:Ti-Zr alloy fabricated by laser solid forming showed more relatively positive corrosion potential, smaller corrosion current density and lower passive potential, and did not show any evidence of corrosive phenomena.Conclusion:Ti-Zr alloy fabricated by laser solid forming has good corrosive resistance in oral circumstances.

Purpose To study clinicopathologic feature of prostate cancer by complete embedding of radical prostatectomy specimen. Methods 108 cases of radical prostatectomy by systematic whole organ embedding were reviewed. Results The patient age ranged from 55 to 80 years ( mean 68. 1 years) . The preoperative average PSA value was 18. 3μg/ml. 59 cases ( accounting for 54. 6% of all prostatectomy cases) were in pT2 stage, while 23. 7% (14/59) in pT2a stage, 8. 5% (5/59) in pT2b, and 67. 8% (40/59) in pT2c. 49 cases (45. 4%)in pT3 stage, while 59. 2% (29/49) in pT3a, 40. 8% (20/49) in pT3b. 3. 6%(3/84)cases presented pelvic lymph node metastasis. 8. 3% (9/108) cases were graded as Gleason Score 6 or less, 61. 1% Gleason Score 7, 30. 6%(33/108)Gleason Score 8 or more. Gleason Pattern 5 component was found in 26. 9% (29/108) cases. Positive margin was observed in 25. 9% (28/108) cases, with 75% (21/28) in pT3 stage and 53. 6% (15/28) having Gleason Pattern 5. Patient in pT2 stage pres-ented mean PSA value of 14. 00 μg/ml, involved in no more than 2 biopsy cores in 68. 5% cases, and more than 5 cores in 4. 3%, while in pT3 stage, presented mean PSA value of 23. 82μg/ml, involved in no more than 2 cores in 19. 6%, and more than 5 cores in 28. 3%. The difference of involved core number was significant in pT2 and pT3 tumors ( P<0. 01 ) . 81. 3% cases graded Gleason Score 6 in biopsy was assigned to Gleason Score 7 or more in prostatectomy. Conclusions Completely sampling radical prostatectomy specimen should be recommended for accurate staging and margin status. Preoperative PSA value, Gleason Score of biopsy, involved core number by cancer is a still helpful parameter for clinical staging and risk estimate.

Purpose To study the prevalence and feature of EGR gene rearrangement in prostatic carcinoma. Methods 242 consecu-tive core biopsies of prostatic carcinoma were evaluated. All biopsy specimens contained 6-14 cores from left and right sides separately delivered. The patient age ranged 58 to 91 years, and PSA value 5 ng/ml to more than 5 000 ng/ml. Immunohistochemistry ( IHC) for ERG protein overexpression and fluorescent in situ hybridization ( FISH) for ERG gene rearrangement were performed. Results 42 cases were detected positive for ERG by IHC ( positive rate 17. 4%) , and positive for ERG rearrangement by FISH either, with 19 ca-ses showing fusion through deletion and 23 through insertion, while no negative cases by IHC demonstrated positive by FISH. 5 cases revealed positive and negative staining in different carcinoma foci of ERG. No ERG positive staining and rearrangement were found in adjacent benign glands. Of positive cases, 12 cases were graded as Gleason score 6, 23 Gleason score 7, and 7 Gleason score 8 or more. Positive rate was 19. 6% in the group of PSA value less than 100 ng/ml, and 10% of more than 100 ng/ml, whereas 17. 2% in the group of clinical T3 stage or less, and 19% of clinical T4 and lymph node or remote metastasis. ERG rearrangement was associated with lower Gleason score, but not with PSA value, clinical stage and progression using theχ2 test analysis. Conclusions IHC is relia-ble for detection ERG rearrangement and helpful for interpretation of prostatic carcinoma. Multiple foci are common in prostatic carcino-ma. There is no significance between ERG rearrangement and disease prognosis.

Objective To explore the profiles of physical activity domains among professionals with different occupational activity patterns.Methods A cluster random sampling method was used to recruit employed adults aged 30-60 years in Beijing as well as Zhejiang province.The information on the physical activity domains was collected with a revised Global Physical Activity Questionnaire (GPAQ).Results Of 3 326 professionals,about 30.79％,50.75％ and 18.46％ adults had Class Ⅰ (mostly sedentary reading or writing during work time) ,Class Ⅱ (mostly working with arms or legs with little effort) ,and Class Ⅲ (working with effort)occupational activity patterns,respectively.The median volume of leisure time activity and bicycling were all 0 Met-min/week,and no significant difference of domestic activity volume was detected among all the three classes of professionals.Of all the non-occupational activity volume among three classes of adults,domestic activity accounted for the most proportion (58.87％) performed by adults of Class Ⅱ,traffic activity accounted for the most proportion (34.2％) by those of Class Ⅲ,and leisure time activity accounted for the most proportion (12.7％) by those of Class Ⅰ.Most time was spent in sedentary behaviors by those of Class Ⅰ after hours.Conclusions Besides the generally low level of moderate activity,the diversity of the domains of physical activity among this population was evident.It is necessary to develop appropriate technology to improve physical activity for professionals with different occupational activity patterns.

Objective By the reform of vocational nursing Maternal and Child Care course teaching methods,to solve the problems existing in higher vocational curriculum in five-year nursing specialty such as too much repetition in teaching content,low learning interest and enthusiasm in students,and not being able to reach target level of personnel training effectively.Methods Higher vocational nursing class 2 (51students) were extracted as the experimental group,class 3 (50 students) were extracted as as the control group from grade 2009.The experimental group adopted the project teaching method,the control group used the traditional teaching method.At the end of the course,the results of knowledge and operating skills between the two groups were compared.Results The total scores of the experimental group were better than the control group in memorizing theoretical knowledge examination,interpretation,application.There were no differences in individual skill examination skills assessment between the two groups,comprehensive skills assessment and total scores of the experimental group was better than the control group.Conclusions Application of project teaching method in higher vocational nursing specialty maternal and child care course teaching in higher vocational cohesion.It can effectively avoid the repetition of teaching content which may lead to the low utilization rate in class,stimulate students' interest in learning,and develop students' comprehensive occupation ability,and make vocational course objectives to achieve high stage.

BACKGROUND: During xenogenic liver transplantation, major histocompatibility antigen can induce immunological rejection, and immunosuppressant can cause adverse effect on organism. Recently, treatment prior to transplantation induces immune tolerance, which is perspective for organ transplantation.OBJECTIVE: To investigate the correlation between thymus induction and immunological rejection during liver transplantation. METHODS: A total of 40 male SD rats of clean grade were selected as donors. Moreover, 30 male Wistar rats of clean grade and 10 male SD rats of clean grade were selected as recipients. The donor rats were divided into allogeneic gene transplantation, allotransplantation, cyclosporine, and thymus induction groups, with 10 rats in each group. The modified Kamada and improved two-cuff technique was used to establish a stable rat orthotopic liver transplantation model. The cyclosporine group was given cyclosporine (50 mg/kg) for 5 successive days. Thymus induction group was injected with major histocompatibility antigens (50 pL) for 5 successive days. Other groups were not given any interventions. Survival time of rats was recorded in each group. Pathological observation and mixed lymphocyte cultured were performed at days 3, 7, 14, 21, and 28 after transplantation. RESULTS AND CONCLUSION: Survival time was longer in the thymus induced group compared with other groups (> 60 days), damaged level was mild, local immunological rejection was reduced, and lymphocytes were decreased. The effect after liver transplantation was similar to allogeneic gene transplantation but superior to cyclosporine intervention (P < 0.05). This suggested that thymus induction relieved immunological rejection following liver transplantation.

Objective To investigate the neuroprotection of delayed treatment of thoracic acute spinal cord injury with recombinant human erythropoietin (rhEPO) in rat model of compressive injury. Methods Sixteen adult male Sprague-Dawley rats were randomly divided into two groups: control group (compressive injury group) and experimental group (rhEPO group), In the compressive injury group,the animals recived 0.9% saline treatment at 2 h, day 1 and day 3 after the injury, while in the rhEPO group, rhEPO (3 000 U/kg) was given to rats at 2 h, day 1 and day 3 after the injury. All the rats were observed in 4 days after the injury. The primary outcomes were evaluated by BBB scale, apoptotic index, inflammatory index and electron microscopy. Results Delayed treatment of thoracic acute spinal cord injury with rhEPO could reduce apoptosis, regulate inflammation, improve motor function and promote regeneration of the spinal cord. Conclusion Our study suggests that delayed treatment of thoracic spinal cord compressive injury with rhEPO could exert neuroprotection.

Objective To explore the expression of heparanase(HPA)and its correlation with the clinical pathological features and angiogenesis in bladder transitional cell carcinoma.Methods HPA mRNA level was detected with RT-PCR and its protein level was determined by immunohistochemical staining in 68 cases of bladder cancer and 24 cases of adjacent tissues of bladder cancer.Results The positive rate of HPA mRNA was 60.3%(41/68)in bladder cancer,4.2%(1/24)in the adjacent tissues of bladder cancer.The expression of HPA mRNA had statistically significant correlation with pathological stage,clinical staging and lymphonode metastasis(P

Objective To observe the effect and adverse reactions of iron sucrose injection in treating old patients with iron deficiency anemia(IDA). Methods Thirty-two old patients with IDA were divided into injection group(17 patients)and oral group(15 patients)by random digits table. The effects of improvement on IDA and their adverse reactions were observed. Results After treatment, hemoglobin(Hb)in the injection group and oral group was(100.18±8.71)g/L and(85.80 ± 6.92)g/L(P＜0.01), and serum iron was(23.84±5.34)μmol/L and(14.63±3.29)μmol/L(P＜0.01).There were no obvious adverse reactions in injection group, whereas there were 6 cases(40%)with gastric and colon adverse reaction in oral group. Conclusions The treatment of intravenous injection of iron sucrose can be effectively used to cure old patients with IDA. It has better effect and has lower rate of adverse reaction.

BACKGROUND: Most patients who underwent liver transplantation would suffer acute rejection or transplanted liver failure resulted by chronic rejection, therefore, inducing specific immune tolerance via varied pathways is the ideal method to solve this problem. OBJECTIVE: To treat rat transplanted liver by injecting transforming growth factor β1 (TGF-β_1) plasmid, and to analyze the relationship between TGF-β1 and allograft rejection from gene level. METHODS: A total of 30 male, Wistar rats were served as allogenic liver donors, and 10 male, SD rats served as syngeneic donors Totally 40 male SD rats were served as liver recipients, and divided into 4 groups by order number table: ailogenic transplantation, syngeneic transplantation, ciclosporin, and ciclosporin plus TGF--β_1 groups. In each group, rat orthotopic liver transplantation model was established by modified Kamada and improved two-cuff technique. After modeling, rats were received cyclosporine 1-5 days in the cyclosporine group, or intraperitoneal injected ciclosporin for 1-5 days, combined with TGF-β_1 plasmid 0-2 days in the cyclosporine plus TGF-β_1 group. No intervention was performed in the other groups. The survival time of rats were recorded, and the pathological changes was detected at days 3, 7, 14, 21, and 28 after transplantation, then the mixed lymphocyte culture was performed. RESULTS AND CONCLUSION: The survival time of rats in syngeneic transplantation group and cyclosporine plus TGF-1,β_1 group was more than 60 days, which was obviously greater than that of allogenic transplantation and cyclosporine groups (P< 0.05). The histopathologic slide showed that there was moderate and severe acute rejection, with evident intrahepatic inflammatory cell infiltration in the allogenic transplantation and cyclosporine groups. Few rejections were observed in the syngeneic transplantatior group, which was close to the normal lever tissues. Mixed lymphocyte culture of the cyclosporine plus TGF-β_1 group was superior to the syngeneic transplantation group or cyclosporine group (P < 0.05). The results demonstrated that cyclosporine combined with local injection of TGF-β_1 plasmid can relieve post-transplant immune rejection.