Objective To explore the feasibility of He-Ne laser irradiation in promoting orthodontic tooth movement and periodontal remodeling through observing the effect of low power laser on the expression and distribution of matrix metalloproteinases- 9(MMP- 9) during orthodontic tooth movement in rabbit. Methods Thirty rabbits were divided into 1d,3d,5d,7d,14d and 21d groups, each group were given a coil spring connected to the maxillary upper first molar to the upper incisor and fixed bilaterally by a ligature wire and set force to 80g. He-Ne laser irradiation was performed on the right side of the orthodontic tooth, and the left side served as control. Radiation time ranged from 1 day to 5 days, once a day, 15min each time. All of the tissue sections were proceeded with MMP- 9 immunohistochemical staining. MMP- 9 average gray scale in periodontal tissue of the orthodontic teeth was analyzed by a Computer Image Analyzing System. Results The expression level of MMP- 9 increased earlier and lasted for a longer time in the compression and tension area on the side of irradiation by He-Ne laser as compared to those on the control side. There was significant difference between the irradiation side and the control side in terms of the MMP- 9 expression gray scale in the tension zones at 5 and 7 days post-operation, and in the pressure zones at 3,5,7 day post-operation. Conclusion During the movement of orthodontic teeth, local irradiation with He-Ne laser could increase the expression of MMP-9. It was suggested that the irradiation with low power laser accelerate blood vessel and bone remodeling.

Objective To examine whether hantavirus Z37 envelope glycoprotein genes G1 and G2 recombinants could elicit humoral immune responses in mice. Methods We vaccinated BALB/C mice with plasmid pcDNA3.1 G1 and pcDNA3.1 G2 respectively by intramuscular and gene gun inoculation. Serum anti hantavirus antibodies were detected by IFA and neutralizing antibodies (NAb) were detected by plaque reduction neutralization test with immunoperoxidase staining. The mice given intramuscular inoculation were divided into 3 groups, each group containing 5 mice: groupⅠas control inoculated with 100 ?g pcDNA3.1 ; groupⅡ with 100 ?g pcDNA3.1 G1; group Ⅲ with 100 ?g pcDNA3.1 G2. Each mouse was immunized three times. 4 weeks after primary vaccination, 2 boosts were given at 3 week intervals. The mice given gene gun inoculation were divided into 3 groups, each group containing 3 mice: groupⅠ as control with 1.5 ?g pcDNA3.1; group Ⅱ with 1.5 ?g pcDNA3.1 G1; group Ⅲ with 1.5 ?g pcDNA3.1 G2.Each mouse was immunized two times. 4 weeks after primary vaccination, 1 boost was given. Results 1. In mice given intramuscular inoculation, serum anti hantavirus antibodies were detected 3 of 5 in group Ⅱ, 2 of 5 in group Ⅲ.IFA titers 1∶20～1∶80. NAb were detected 1 of 5 in group Ⅱ, 2 of 5 in group Ⅲ. NAb titers 1∶10～1∶20. 2.In mice given gene gun inoculation, serum anti hantavirus antibodies and NAb were detected in all experimental group mice, IFA titers 1∶20～1∶320, NAb titers≥1∶10. Conclusions Genetic immunization with HV Z37envelope glycoprotein genes G1 and G2 recombinants could elicit effective humoral immune response in mice.

Objective To investigate the effect of Niaoduqing Particles on the microinflammatory state in patients with maintenance hemodialysis. Methods Totally 240 patients with hemodialysis for more than 6 months were randomly divided into conventional hemodialysis group, Chinese medicine group (treated with Niaoduqing Particles) and western medicine group (treated with Vitamin E), 80 cases in each group, with 30 healthy people as control group. The levels of hs-CRP, IL-6 and HCY were detected before and after 1, 3, 6 months of treatment. Results Before treatment, the levels of inflammatory factors in hemodialysis patients were higher than control group. And after 3 months of treatment, the levels of hs-CRP, IL-6 and HCY of Chinese medicine group were decreased. And after 6 months of treatment, the levels of inflammatory factors were decreased obviously compared with pretherapy (P<0.01), and the difference with the conventional hemodialysis group was significant (P<0.01). Compared with pretherapy, the changes of inflammatory factors of western medicine group were statistically insignificant. Conclusion Niaoduqing Particles can significantly improve the microinflammatory state in maintenance hemodialysis patients, and the effect is superior to Vitamin E.

Objective To study the mechanism of some vegetables inhibiting human platelet aggregation function.Methods Some vegetable juice was mixed(tomato juice as positive control)with platelet-rich plasma(PRP),and maximum ratio of platelet aggregation was measured after induction by agonists on the aggregometer.The expression levels of platelet activation marker were detected,including fibrinogen receptor(Fib-R),P-selectin(CD62P),and the combination amount of fibrinogen on the surface of platelet by flow cytometry to validate the inhibitory effect of platelet aggregation by animal tests.Ordinary white rabbits were randomly divided into five groups,each group was fed with saline,cooked tomato juice,blanched garlic leaves juice,Chinese cabbage juice or spinach juice,respectively.And the maximum ratio of rabbit platelet aggregation in different time were observed.Results Cooked vegetable juice couldn't inhibit human platelet aggregation induced by AA,but blanched garlic leaves juice,Chinese cabbage juice and spinach juice could inhibit human platelet aggregation obviously induced by ADP.collagen or epinephrine.The inhibition intensity of platelet aggregation increased markedly along with the increase of the concentration of the cooked vegetables juice.Cooked juice of blanched garlic leaves,Chinese cabbage,spinach could not inhibit the expression of Fib-R and CD62P,Whereas they were able to significantly decrease the amount of Fib-R and fibrinogen binding. ADP-induced rabbit platelet aggregation ratios in the group fed with cooked juice of blanched garlic leaves,Chinese cabbage or spinach were significantly lower than control group after 3,5,8 weeks,respectively.The inhibition ratios of the platelet aggregation in cooked Chinese cabbage juice group were 45.7%,53.6%,48.5% after 3,5,8 weeks,respectively.Cooked juice of blanched garlic leaves group were 10.7%,66.7%,46.3%,respectively. Cooked spinach juice group were 8.7%,21.0%,42.6%,respectively.The collagen-induced rabbit platelet aggregation ratios in the groups fed with cooked juice of blanched garlic leaves or Chinese cabbage were significantly lower than control group after 5 and 8 weeks respectively. The inhibition ratios of the platelet aggregation in cooked Chinese cabbage juice group were 54.9%,56.3%after 5 and 8 weeks,respectively. Cooked juice of blanched garlic leaves group were 28.4%and 86.7%,respectively. Cooked tomato juice could not inhibit rabbit platelet aggregation in 8 weeks. Conclusions After induced by ADP or collagen,cooked juice of blanched garlic leaves,Chinese cabbage and spinach could significantly decrease the amount of Fib-R and fibrinogen binding,and inhibit platelet aggregation function significantly.It may have potential application of therapy or prlevention of thrombotic diseases.

Objective To evaluate the results of computer-aid customized acetabular cages for patients with severe defects.Methods Twenty-three patients (8 males and 15 females) with a massive acetabular defects were involved in the present study from January 2005 to September 2014.The average age was 64.2 years (range,46-79 years).According to the American Academy of Orthopaedic Surgeons (AAOS) classification,20 had AAOS type Ⅲ defects and three had AAOS type Ⅳ defects.The customized cages were individualized to each patient's bone defects based on the rapid prototype three-dimensional printed models.The mean follow-up duration was 66.3 months (range,24-120 months).The clinical and radiographic outcomes of all patients were assessed at 6 and 12 weeks after surgery and at once yearly thereafter.Harris hip scores were assessed before surgery and at each follow-up.Postoperative radiographs were evaluated for cage position,migration,and graft incorporation.Complications and reoperations were assessed by chart review.Results The mean Harris hip score improved from 36.2±7.9 (range,20-49) to 81.8± 8.4 (range,60-96),and there is a significant difference between pre-and post-operation (t=23.23,P＜0.001).Individualized custom cages resulted in generally reliable restoration of the hip center.The difference of horizontal distance (between the center of each hip and pubic symphysis) between bilateral sides was-3.0±6.4 mm (range,-19-8 mm).The difference of vertical distance (between the center of each hip and the line connecting the inferior border of the bilateral tear drop) between bilateral sides was 0.4±2.8 mm (range,-4.5-5 mm).No re-revisions had been conducted.None of the cups showed radiographic migration,while one cage was suspected to be loose based on a circumferential 2-mm radiolucent line.Cancellous allografts appeared to be incorporated in 22 of 23 patients.One deep infection and one superficial infection were observed and were treated with irrigation,debridement,and vacuum sealing drainage.One dislocation and one suspected injury of the superior gluteal nerve also were observed and were treated conservatively.Conclusion Individualized customized cages appears to provide stable fixation and improve hip scores at short or mid-term follow-up.

Objective To establish a new flow cytometric immuno-bead array assay (FCIBA)to detect several platelet-specific autoantibodies simultaneously in a single serum sample.Methods A series of beads of different red fluorescent intensity were used for coating with different anti-platelet membrane protein monoclonal antibodies(anti-GP Ⅱb/a,anti-GP Ⅰ a/Ⅱ a,anti-GP Ⅳ,anti-GP Ⅰ b/Ⅸ and anti-HLAABC)to detect five platelet-specific autoantibodies in serum. The beads captured platelet antigenautoantiboay complex.Subsequently,different platelet-specific autoantibodies in a patient serum can be detected simultaneously by the flow cytometry.In addition,we evaluated the new FCIBA,and compared its results with modified antigen capture ELISA method(MACE).The new FCIBA was used to detect five platelet-specific autoantibodies in serums of autoimmune thrombocytopenic purpura(AITP)and nonautoimmune thromboeytopenic purpura patients.Results The new FCIBA can be used to detect five plateletspecific autoantibodies simultaneously(Anti-GP Ⅱ b/Ⅲ a,Anti-GP Ⅰ a/Ⅱ a,Anti-GP Ⅳ,Anti-GP Ⅰ b/Ⅸand Anti-HLA-ABC).The coefficient of variation(CV)of intra-repetition are 4.82%,6.09%,5.04%,5.73%and 5.30%,respectively.The dilution test results are in good logarithm linearity which are 0.997 2,0.996 6,0.998 8,0.996 5 and 0.998 2,respectively. The resuhs of the new FCIBA are highly correlated with those with MACE method,and the coefficient correlation were 0.928 9,0.922 4,0.889 4,0.910 0 and 0.913 4,respectively(P＜0.01).51.69%samples of AITP patients show positive for platelet-specific autoantibodies as detected by the new FCIBA.Among the AITP patients,the positivity of specific autoantibodies for anti-GPⅡb/ Ⅲ a,anti-GP Ⅰ a/Ⅱ a,anti-GP Ⅳ,anti-GP Ⅰb/Ⅸ and anti-HLA-ABC were 40.82%,24.45%,19.39%,32.65%and 17.35%.Among the 40 non-autoimmune thrombocytopenic purpura patients,none of platelet-specific autoantibodies in serum samples can be detected.Conclusion A new FCIBA is established successfully to detect five platelet-specific autoantibodies coefficient correlation.

The use of various biomimetic methods to achieve remineralization of demineralized dentin and the formation of an organic matrix-inorganic mineral complex with a certain mechanical strength has been a research hotspot in recent years in the field of stomatology, and it also provides a new idea for the restoration of dentin defect. Dentin biomineralization is a process that simulates the mineralization of biological tissue in nature in which the remineralization of dentin collagen is induced and regulated by organic macromolecules. This review summarizes the process of remineralization of decalcified dentin regulated by non-collagenous protein analogues in vitro.

Objective To investigate the prevalence and risk factors of chronic kidney disease (CKD) in middle-aged and older adult population in Shanghai Pudong New District.Methods Two thousand residents aged 45 years and above were randomly selected for questionnaire survey and health check-up in Shanghai Pudong New District from July 2006 to October 2010.The laboratory examinations were also performed including the urine routine,urinary protein to creatinine ratio,serum creatinine,blood glucose and lipids.The glomerular filtration rate (eGFR) was estimated by simplified Chinese MDRD (modification of Diet in Renal Disease) equation.SPSS 13.0 statistical software was used for statistical analysis.Results Among 1905 residents who completed survey and examinations,the adjusted prevalence of albuminuria was 12.0％ (95％ CI:0.105-0.135) and of eGFR less than 60 ml · min-1 · 1.73 m-2 was 1.9％ (95 ％ CI: 0.172-0.213).The prevalence of CKD was 12.6％ (95 ％ CI: 0.112-0.142).Logistic regression analysis revealed that age (OR =1.043),hypertension (OR =2.272),diabetes mellitus (OR =1.233)and hyperuricemia (OR =1.003)were independently associated with CKD.Conclusions The prevalence of CKD in adult residents (≥45 years) from Shanghai Pudong New District is high.It is necessary to carry out early screening and to intervene risk factors of CKD in middle-aged and older residents.

Objective: To retrospectively investigate the value of contrast enhanced ultrasound (CEUS) in breast cancer biopsy. Methods: A total of 49 consecutive patients with biopsy confirmed breast cancer were retrospectively analyzed. All patients underwent CEUS and biopsies were thus performed targeting both the high perfusion and low/non-perfusion regions on CEUS. The diagnostic performance and core cancer involvement of the biopsy cores taken from the high perfusion regions were compared with those from the low/non-perfusion. Results: A total of 53 breast cancer lesions were biopsy confirmed in 49 patients.CEUS revealed homogeneous enhancement in 8 lesions (15.1%), and heterogeneous enhancement in 45 lesions (84.9%). The diagnostic accuracy rate for biopsy cores taken from the high perfusion regions was significantly higher than that from the low/non-perfusion regions (98.5% vs 72.9%, P<0.01). The core cancer involvement was also higher in high perfusion lesions (55% vs 30%, P<0.01). Conclusions CEUS can differentiate the active area and necrotic fibrosis area of breast tumors by displaying the microvessels, thus contributing to the selection of biopsy sites.

Objective: To evaluate the safety and efficacy of foam sclerotherapy for bleeding internal hemorrhoids. Methods: Consecutive adult patients (aged 18-60 years) with bleeding hemorrhoids were prospectively enrolled between March 2017 and March 2018. All patients were randomly assigned to the foam sclerotherapy (FS) group and the liquid sclerotherapy (LS) group. The foam and liquid sclerotherapy of hemorrhoids nucleus was performed by cap-assisted colonic endoscopy. Results: A total of 108 patients were enrolled, including 62 males (57.4%) with mean age of 44.0±7.6 years. There was no significant difference in gender, age, or body mass index between the FS (n = 55) group and the LS (n =53) group. The total amount of lauromacrogol injection in the FS group was 3.7±0.9 mL, which was significantly lower than that in the LS group (8.0±2.2 mL, P<0.001). In the LS group, 8 patients (15.1%) developed bleeding after needle removal, which was significantly higher than that in the FS group [5.5%(3/53), P=0.022]. Significant pain was found in 2 patients (3.8%) in the LS group and 0 in the FS group (P= 0.025). The short-term cure rate and effective rate of the FS group were 87.3% (48/55) and 9.1% (5/55), while those were 69.8% (37/53) and 22.6% (12/53) in the LS group, respectively (P=0.046). Conclusion Foam sclerotherapy is safe and effective in the treatment of bleeding internal hemorrhoids.