Objective To observe the clinical efficacy and safety of calcipotriol betamethasone ointment for the treatment of pso‐riasis vulgaris in the stable stage of patient .Methods This was a randomized ,parallel controlled clinical trials ,in which 90 patients with psoriasis vulgaris were randomly divided into experimental group and controlled group .All of them received 4 weeks of thera‐py .We compared the efficacy and safety 1 ,2 ,4 week after treatment by calcipotriol betamethasone ointment .Results About the clinical efficacy ,according to the decrease in percentage of psoriasis area and severity index (PASI) were:23 patients in the experi‐mental group were effective(efficacy rate is 76 .67% ) ,14 patients in control group Ⅰ was effective(efficacy rate is 46 .67% ) ,15 pa‐tients in control group Ⅱ was effective(efficacy rate is 50% ) .The differention between experimental group and the two control groups was significant(P< 0 .05 ,P< 0 .01) .After 1 ,2 ,4 weeks of therapy ,the decrease in percentage of PASI of experimental group is higher than that in the control groups .The scores of the observed erythema ,infiltration ,scale were decreased ,and the total scores of PASI are also decreased 4 weeks after therapy .The decrease score of experimental group is higher than that of control group Ⅰ(P<0 .01) and control group Ⅱ(P<0 .01) .The side effects of the experimental group are mild such as itching ,folliculi‐tis ,erythema ,and the laboratory examinations had no abnormal changes .Conclusion Calcipotriol betamethasone ointment was more effective to treat the stable stage psoriasis vulgaris patients compared with single use of halometasone or calcipotriol .It takes effect quickly ,and could be more feasible and safe .

BACKGROUND: Precise clinical treatment of talar ischemic necrosis remains controversial at present.OBJECTIVE: To observe the changes in the stress and its distribution on talar trochlear articular surface in case of talar necrosis at different levels.METHODS: The present study adopted eight ankle specimens to establish the three-dimensional finite element model of ankle. Through changes in the talar necrosis volume of these models, this study analyzed the change law of talar trochlear articular surface stress and its distribution and calculated the critical necrosis volume of traumatic foot and ankle arthritis or talar collapse that may be induced by talar ischemic necrosis.RESULTS AND CONCLUSION: The experiment successfully established the three-dimensional finite element model of ankle. This study found that talar trochlear articular surface stress distribution showed little change in case of talar medial and lateral necrosis at a lower level; when medial talar necrosis volume reached (26.6±1.5)%, and lateral talar necrosis volume reached (35.0±2.5)%. Stress concentration phenomenon occurred in the boundary area between talar necrosis tissue and normal osseous tissue, and the stress area took the shape of irregular pattern. It is suggested that surgical treatment should be considered due to the high-risk induction of ankle-foot traumatic arthritis or talar collapse.

Objective: To compare the influence of two explorers on the enamel of artificial initial caries. Methods: Built an artificial initial caries model in vitro. Compared the influence of two explorers on the enamel of artificial initial caries. Results: 1.The holes probed by sharp explorer were deep and narrow. The holes probed by CPI explorer were shallow and wide. 2. The average strain energy produced by CPI explorer was larger than sharp explorer(Z=-2.021,P=0.043), But there was no significant difference because the strain energy produced by two explorers were in the same rate range. Conclusion: The damage on the enamel of artificial initial caries caused by sharp explorer is not larger than that caused by CPI explorer. So we suggest that the sharp explorer can still be used in sampling survey and clinical examination. But a gentle probing action is strongly recommended.

Objective To apply the Intelligent Device for Energy Expenditure and Activity(IDEEA)system to evaluate the locomotion of patients with protrusion of intervertebral disc(PID)quantitatively and dynamically.Methods 8 patients with PID and 9 volunteers as controls performed a series of daily activities in their nature environment.They were monitored with IDEEA.Results The velocity of flexion forward,time flexion forward,time stand up,time sit down of the patients were significant different to the controls(P<0.05),and the walking speed of the former was slower(P<0.05)than the latter's.Conclusion Physical performance of the PID patients was significantly reduced.The IDEEA can be a good tool to evaluate their ability of locomotion in their daily living.

Objective To establish three dimensional finite element model libraries of telescopic dentures and removable partial dentures by means of model libraries, and compare the characteristics of stress distribution among three prostheses. Methods Normal model libraries were imported and edited, and models of bilateral free-ended cases were established. Based on the model libraries of fixed partial dentures and removable partial dentures, the finite element models of telescopic dentures and removable partial dentures with medial or distal occlusal rest were established using softwares such as DELL Precision Graphics Workstation, UG 5.0, HyperMesh 7.0 and Abaqus 6.5, then finite element stress analysis was performed. Results The stress distribution on abutment root, parodontium, alveolar mucosa and alveolar bone was uniform. The maximum value of stress on the abutment root (6.205 Mpa) was much less than those of two removable partial dentures (18.41 Mpa and 34.49 Mpa). Conclusion For bilateral free-ended cases, the telescopic denture design is uniform in stress distribution with less stress on abutment root, which is healthy to the abutment root and surrounding tissues.

Objective To redevelop the finite element model libraries and to analyse the stress distribution of telescopic crown dentures. Methods The finite element model libraries were redeveloped based on the model libraries of normal dentition, fixed partial denture and removable partial denture. With the help of softwares such as DELL Precision Graphics Workstation, UG 5.0, HyperMesh 7.0 and Abaqus 6.5, the telescopic denture models on the bilateral free-ended case were imported and edited, then the finite element stress analysis was performed. Results The models were easily established. The maximum value of stress and its distribution on abutment root, periodontal membrane, alveolar mucosa, alveolar bone and dental prostheses were observed and studied by the finite element stress analysis. Conclusion The way to establish models of telescopic crown dentures by model libraries is feasible and reliable.

BACKGROUND:Because macrophages play an important role in the body’s inflammatory response, the detection of the impact of biological materials on the behavior of macrophages can assess the immunogenicity of materials. OBJECTIVE: To analyze the activation effect of decelularized extracelular matrix materials on macrophages. METHODS: The peritoneal macrophages of BALB/c mouse were obtained and cultured by dividing into five groups. Control group was simple cel culture group, experimental group 1 was acelular matrix membrane material directly contacting with macrophage for culture, experimental group 2 was fresh pericardial material directly contacting with the macrophage for culture, experimental group 3 was acelular matrix membrane material indirectly contacting with macrophages for culture, experimental group 4 was fresh pericardium material indirectly contacting with macrophages for culture. After 24 hours of culture, the secretion of nitric oxide and cytokines in cel culture supernatant was determined. After 48 hours of culture, the absorbance value was determined by MTT method and the toxicity grading was determined. RESULTS AND CONCLUSION: The toxicity grading in experimental groups 1-4 was respectively grades 2, 4, 0, 2. The nitric oxide level in experimental groups 1 and 2 was higher than that in the control group (P < 0.05), and the nitric oxide level in the experimental group 2 was higher than that in the experimental group 1 (P < 0.05). There were no significant differences in interleukin-2, interleukin-4,interferon γ, interleukin-17A and interleukin-10 levels between these five groups. The interleukin-6 level in the experimental group 2 was higher than that in the control group (P < 0.05); The expression levels of tumor necrosis factors in experimental group 1, 2 and 4 were higher than those in the control group (P < 0.05), and experimental group 2 higher than the experimental group 1 (P < 0.05), experimental group 1 higher than the experimental group 4 (P < 0.05). These results show that acelular matrix material can activate macrophages in direct contact.

Abnormalities, Multiple ; diagnosis ; diagnostic imaging ; Aorta, Thoracic ; abnormalities ; diagnostic imaging ; Aortic Aneurysm, Thoracic ; congenital ; diagnosis ; diagnostic imaging ; Aortic Diseases ; congenital ; diagnosis ; diagnostic imaging ; Child ; Diagnosis, Differential ; Humans ; Male ; Radiography ; Rare Diseases ; X-Rays

Objective To evaluate the ability of contrast-enhanced ultrasonography (CEUS)in differentiate reactive lymph node,metastatic lymph node and lymphoma.Methods In a prospective study CEUS was performed in 129 patients with cervical lymph node enlargement.The entire process were recorded and preserved in DICOM format.The results were registered with Sonoliver.The receiver operating characteristic curve (ROC curve)analysis was performed to find the corresponding cutoff values. The selected node was removed surgically and submitted for histology.Results Of all the nodes,26 were reactive nodes,85 were metastases and 1 8 were lymphoma.Enhancement pattern was the most accurate way to characterize lymph nodes.The enhancement pattern of reactive lymph nodes was homogeneous and most of them were enhanced by lymphatic type while the metastatic lymph nodes were inhomogeneously enhanced or weakly enhanced by peripheral type.Lymph node lymphoma usually had no fixed enhancement pattern. Arrive time (AT),rise time (RT),time to peak (TTP),mean transit time (mTT),maximum intensity (IMAX),under the curve (AUC),rising slope(Kup),semi descending slope(Kdown)and perfusion index (PI)were significantly different in the three groups(P <0.05).RT,TTP and mTT of reactive lymph nodes were the shortest,which had significant difference compared with those of metastatic lymph nodes and lymphoma (P < 0.05 ).Kup,Kdown,IMAX%,AUC,PI in the reactive lymph nodes were significantly decreased compared with the metastatic group (P <0.05),but there was no significant difference compared with those in lymphoma (P >0.05 ).When TTP≥ 7.74 s,mTT≥26.54 s,metastatic lymph nodes were considered.When RT≥4.62 s,TTP ≥ 7.74 s,mTT ≥ 28.32 s,reactive lymph nodes were not considered. Conclusions Dynamic contrast-enhanced ultrasound image and enhancement pattern can distinguish neck lymph nodes while the optimal cut-off point time of the time-intensity curve parameters can further contribute to the identification of lymph nodes.

Objective To evaluate the effect of percutaneous transhepatic obliteration(PTO)of gastroesophageal varices in liver cirrhosis.Methods Fifty-six cirrhotic patients suffering from gastroesophageal varices were treated with PTO,including 35 during emergency bleeding,10 after stoppage of hemorrhage and 11 with severe gastroesophageal varices for prevention of bleeding.Results Catheterization and embolization of gastroesophageal varices were successfully performed in all 56 patients(100%).Bleeding stopped after PTO as an emergency treatment was achieved in 35 patients with upper gastrointestinal bleeding.Among them,PTO was performed in 11 patients for preventing variceal hemorrhage,gastroesophageal varices disappeared in 7 and alleviation was obtained evidently in 4.47 patients were followed up for 2-60 months with recurrent bleeding in 5,death in 4 on causes of rebleeding of alimentary tract(1 case),hepatic failure(1 case), hepatocellular carcinoma(2 cases).Conclusion PTO is a safe and effective treatment for gastroesophageal varices in cirrhotic patients and should be recommended extensively.