OBJECTIVE:To explore the effect of Xiaoyu anshen capsule on the space learning-memory ability of chronic stress-induced depressed model rats.METHODS:The enrolled rats were divided into 6 groups:blank control group,model group,Fluoxetine group,Xiaoyu anshen capsule groups(high,medium and low dose).Chronic depression rat model was induced by chronic stress and isolated breeding.Water-maze video tracking analysis system was used to detect the capacity of rats' space learning-memory,and the indexes such as the body weight of rats before and after modeling and the consumption of sucrose,etc.were measured.RESUTLS:Compared with the blank control group,the model control group showed significantly decreased space learning-memory capacity,significantly lower in body weight increase and significantly less sucrose solution consumption.Compared with the model control group,the high,medium and low dose Xiaoyu anshen capsule-treated group showed significantly shortened escape latency,the high and medium dose groups showed increased number of times of crossing the hidden platform and body weight increase,and in high dose Xiaoyu anshen capsale group sucrose consumption increased.CONCLUSION:Xiaoyu anshen capsule is a nootropic Chinese herbal medicine for its inhibitory effect on the abnormality in body weight and sucrose solution consumption of chronic stress-induced depressed model rats and their action in enhancing the space learning-memory ability.

Objective:To study the feasibility of microarc oxide treatment on the enhancement of titanium-ceramic bonding strength. Method:Titanium samples in the size of 25 mm?3 mm?0.5 mm were prepared with smooth surface(group 1),rough surface(group 2) and microacrc oxide treated surface(group 3). Nickel-chromium alloy samples in the same size were prepared (group 4). The surface of the samples was observed by scanning electron microscope(SEM) and dispersive spectrometry analysis. Then, the samples were bonded to porcelain. The bonding interface was observed by SEM. The bonding strength of the samples was measured by a three-point bending test according to ISO 9693.Results:Microarc oxide treated surface was rough and porous. The interface of microarc oxide treated surface bonded to porcelain was compact. The bonding strength(MPa) of the samples of group 1,2,3 and 4 to porcelain was 30.79?1.3,36.12?3.03,45.84?3.15 and 48.35?3.06 respectively(group 3 vs group 1 or 2 P0.05). Conclusion:The microarc oxide treatment on titanium can increase the titanium-ceramic bond strength.

Objective:To evaluate the effect of preoxidation on the bonding strength of titanium to porcelain.Method:12 titanium plates(25 mm?3 mm?0.5 mm) were pre-oxidated according to usual preoxidation procedure and 12 without preoxidation were used as the controls.The samples(6 in each group) were then bonded with bonding porcelain,opaque porcelain,dentin porcelain and glaze of Duceratin(Degussa) or Vita titankeramik(Vita) respectively.The bonding strength of Ti/porcelain was evaluated using three-point bending test according to ISO 9693 1990 standard. The interface of Ti/porcelain bonding was observed by SEM.Results:Bonding strength(MPa) of Ti/Duceratin preoxided group and the corresponding control was 41.910?2.778 and 33.097?5.297(P0.05),respectively.SEM observation showed inter-lock and tight bonding of Ti/porcelain in pre-oxidated interface,more cracks and gaps between Ti and porcelain in non-pre-oxidated interface.Conclusion:Pre-oxidation may improve bonding strength of Ti/Duceratin system, while has no significant effect on bonding strength of Ti/Vita titankeramik system.

Objective:To study the effects of different ratios between adhesive and solidification agent on the investment of titanium and to investigate the physical properties of the adhesive on different time intervals.Methods:Mixed adhesive with solidification agent according to different ratio:14∶1,14.5∶1,15∶1.Twelve wax sheet patterns(10 mm?10 mm?0.8 mm)were invested,and then the castings were fabricated.Manipulation performance,appearance of the casting mold,and color of the castings as well as their integrity and edge clarity were observed.The more ideal proportion was selected and determined.Dynamic viscosity,density and pH value of the adhesive were measured on different days(1,3,5 and 7 days).Results:With a adhesive or solidification agent ratio of 14∶1,the solidified time was comparatively short and unable to operate,while with a ratio of 15∶1,the solidified time was too long to solidify and led to the distorted castings.In group with a ratio of 14.5∶1,the primary gel time,intact mold and cast gate were appropriate.The surface of the castings showed bright,metal color after sand blasting.Dynamic viscosity,consistency and pH value of different days for the adhesive had no significant difference.Conclusion:Favorable casting can be fabricated for adhesive mixing with solidification agent when the ratio was 14.5∶1.The adhesive has steady capability in 7 days in practical condition.

BACKGROUND:Posterior cervical open-door expansive laminoplasty is one of the simple and effective methods to treat cervical spinal diseases, has satisfactory results but low complications. However, the imbalance of sagittal plan, loss of lordosis or axial pain is often reported recently. OBJECTVE:To analyze the correlation between cervical sagittal alignment and clinical outcomes after laminoplasty. METHODS:Between January 2011 and June 2015, 122 cases of cervical spinal disease, who were treated with open-door expansive laminoplasty with mini-titanium plate, were retrospectively analyzed. Clinical outcomes were evaluated by Japanese Orthopaedic Association, Neck Disability Index and Visual Analogue Scale. Radiographic results were assessed by C2-7 Cobb angle, C2-7 sagittal vertical axis and C7 slope. The correlation between sagittal alignment and clinical outcomes were analyzed. RESULTS AND CONCLUSION:(1) Al patients were fol owed up for 7-32 months. (2) Japanese Orthopaedic Association, Neck Disability Index and Visual Analogue Scale scores were improved in the final fol ow-up (al P<0.001). No significant difference in upper limb Visual Analogue Scale scores was determined (P=0.142). In the final fol ow-up, C2-7 sagittal vertical axis increased (P=0.036), but neither the C2-7 Cobb angle nor the C7 slope significantly changed (P=0.092, P=0.184). (3) There were no correlations between sagittal alignment parameters (C2-7 Cobb angle, C2-7 sagittal vertical axis and C7 slope) and clinical outcomes (Japanese Orthopaedic Association, Neck Disability Index and Visual Analogue Scale) (al P>0.05). (4) These findings indicated that posterior cervical open-door expansive laminoplasty with mini-titanium plate can significantly improve the neurological function of patients. However, there is no correlation between cervical sagittal alignment and clinical outcomes.

Objective To investigate the inhibition of lymphoid enhancer factor-1 (LEF-1) expression in human malignant melanoma cell line A375 by RNA interference method. Methods Sense and antisense oligonucleotides with hairpin structures, targeted specifically at LEF-1 mRNA, were designed, synthesized, then linked to the expression vector psilencer3.1-H1 neo after annealing. After identification, the re-combinant psilencer3.1-H1/LEF-1 siRNA was used to transfect the cultured A375 cells by a liposome-medi-ated method. The cells expressing the recombinant RNA was detected by G418 screening. The mRNA and protein levels were detected by RT-PCR, Western blotting and immunocytochemistry, respectively. Results The expression vector psilencer3.1-H1/LEF-1 siRNA was successfully constructed, and its stable expression in cell clones was achieved. The mRNA and protein levels of LEF-1 were both down-regulated in the trans-fected cells. Conclusion The recombinant of psilencer3.1-HI/LEF-1 siRNA can inhibit the mRNA and protein expression of LEF-1 in A375 cells.

Objective: To study the inhibition of antisense TRP1 on cell growth of malignant melanoma(MM) and explore a new way for therapy of melanoma. Methods: Antisense TRP-1 recombinant vector was constructed and transfected into MM cells. According to the results of MTT, cell growth curves were drawn and then clonogenic assay was performed in vitro. At last, tumorigenesis assay was undertaken in nude mice in vivo. Results: Cell proliferations of TRP-1 transfected MM cells were inhibited compared with the control cells. The results of clonogenic assay displayed the difference of clonogenic percentage between TRP-1 transfected MM cells (52% , P

Objective To investigate the effects of DanzhiⅠ on rats acute skin trauma model.Method Perforate back of the rats was made with special puncher to establish acute trauma model.Wound surface was applied with Danzhi Ⅰ and the healing process was observed.Result Danzhi Ⅰ significantly shrinked the rim of raw surface and shorten the time of healing.The number of completely healed rats increased obviously.Conclusion Danzhi Ⅰ can significantly accelerate the healing of acute skin trauma of rats.

typeⅢgold alloy. Candida albicans could be found on acrylic resin ,but there was little on the other 4 dental metals. Conclusion: From the perspective of reserving periodontal tissue, pure-Ti and typeⅢgold alloy seem to be the first choice, Co-Cr alloy and Ni-Cr alloy are the second.

Objective To investigate melanocyte membrane antigen associated with vitiligo,for further purification and cloning.Methods Sera from patients with vitiligo were screened by using a live cell enzyme-linked immunoabsorbent assay,98strongly positive sera were obtrained.Melanocyte antigens were immunoblotted after splitting of cultured normal human melanocytes.Thirty strong positive vitiligo sera were detected.Results There were positive bands in all screened sera as shown by immunoblotting.Whereas,positive band was seen in only one normal human sera.The antibody bound many antigens with different molecular weights(150kd,90kd,75kd,50kd,40~45kd).Positive rates for individual antigens were70%,60%,83%,16%and23%,respectively.Conclusions Antibody directed to melanocyte membrane antigens of melanocytes are present in the sera of patients with vitiligo.The molecular weights of the antigens are mainly150kd,90kd and75kd,the antigens with small molecules discovered previously maybe the degradation products of big molecules.