Objective:To evaluate a new wax formed by laser sintering technology(SW-1)for dental use.Methods:The melting point,hardness and viscosity of SW-1,normal dental modeling wax and LongYuan's wax formed by laser sintering were tested and compared.Linear shrinkage,plastic deformation and toughness of SW-1 were estimated by national standards.Results:There were no significant differences between SW-1and the normal dental modeling wax in the properties of melting point 〔(61.1?1.63)℃,(61.7?1.96)℃〕and hardness 〔(75.2?0.62)HA,(74.0?0.54)HA〕;but when compared with melting point(78.3?1.07)℃and hardness(94.0?0.38)HA of LongYuan's wax formed by laser Sintering,those of SW-1 were significantly different.Viscosity of SW-1(2 016?136.9)MPa?s showed significant difference when compared with that of normal dental modeling wax(9.06?0.258)MPa?s and LongYuan's wax formed by laser Sintering(2 876?81.7)MPa?s.Linear shrinkage of SW-1(0.2%)met the national standards,while plastic deformation(10%,43 ℃)and toughness(broken when bent,20 ℃)of SW-1 did not meet such standards.Conclusion:SW-1 may be the proper laser sintering material for dental use,and has a good prospect in future.

Objective To analyze the clinical characteristics of systemic lupus erythematosus (SLE) patients with septic arthritis.Methods Twelve SLE patients with septic arthritis admitted to Peking Union Medical College Hospital from January 1990 to December 2012 were retrospectively analyzed.Results The median duration from onset of SLE to septic arthritis was 8.5 months (ranged from 1 to 120 months).All patients had received higher doses of steroid therapy (equal to prednisolone 1 mg ·kg-1 ·d-1) and immunosuppressant,and 5 of them had received methylprednisolone pulse therapy.The infectious manifestations included joint pain (all cases),swelling (5 cases),reduced joint function (8 cases) and fever (10 cases).All patients were oligo-arthritis.The hip and knee joints were most commonly involved.Three patients were infected by Salmonella,4 patients were infected by S.aureus,and 3 patients were infected by tuber culosis.Conclusion When SLE patients with long term steroid and immunosuppressant therapy developedacute joint pain and swelling,septic arthritis should be considered.Synovial fluid Gram stain,culture,blood culture and arthroscopy should be performed promptly.Appropriate antibiotics should be administered,and early treatment can improve the outcomes.

Objective To investigate the protective effect of ginsenoside Rb1 and Re on injury of the neonate rat cardiomyocyte induced by aconitine alkaloids.Methods The influence of aconitine and ginsenoside Rb1,Re together in neonate rat cardiomyocyte was observed respectively.The influence of these components in neonate rat cardiomyocyte was examined by myocard zymogram.The expression of Ca2+ channel gene Cav1.2 mRNA of neonate rat cardiomyocyte after treatment was observed by RT-PCR.Results The ginsenoside Rb1 and Re were able to decrease the release of AST and LDH,reverse Cav1.2 mRNA abundance induced by aconitine.Conclusion The ginsenoside Rb1 and Re which together with aconitine can alleviate the side effects and boost up the therapeutic effects of aconitine.The action mechanism may be relation with that the ginsenoside Rb1 and Re can decrease injuries of the neonate rat cardiomyocytes and abundant expression of Cav1.2 mRNA induced by aconitine.

OBJECTIVE: To study the in vitro anti-tumor activity of tungstophosphate compound(K6[P2W18O62]?14H2O) with Dawson structure.METHODS: MCF-7 cells were treated with different concentration of K6[P2W18O62]?14H2O,then its IC50 was measured by MTT assay;flow cytometry was applied to analyze cell cycle and apoptosis by computing the ratio of MCF-7 cells in different phase and its apoptotic ratio.Cell growth and viability were measured by trypan blue staining and cell counting by computing the ratio of living cells.The synergetic anti-tumor activity of tungstophosphate compound(K6[P2W18O62]?14H2O) and pharmorubicin was studied.RESULTS: K6[P2W18O62]?14H2O inhibited MCF-7 cell proliferation with IC50 of(33.7?3.2) ?mol?L-1,it reduced the proportions of MCF-7 cells at S phase and G1 phase,with the apoptotic rate at 3.7%～29.2% within 48 h.The percentage of living cells was 95.37%～76.78% at 48 h.As compared with pharmorubicin alone,the addition of K6[P2W18O62]?14H2O to pharmorubicin showed a significantly higher inhibitory action on proliferation of MCF-7 cells(P

To investigate the influence of mixing ratios on the hardness,wear resistance and compressive strength of the cements clinically used,Zinc Oxide Eugenol cement,Glass ionomer cements,Zinc Phosphate Cement,and Dual-curing composite cement were mixed at different ratios separately,then made into test pieces.Vickers hardness,wear resistance and compressive strength of these test pieces were measured by related machines.The results showed that vickers hardness,wear resistance and compressive strength of Zinc Oxide Eugenol cement,Glass ionomer cements and Zinc Phosphate Cement reduced with the decrease of powder/liquid ratios.As to Dual-curing composite cement,Vickers hardness,wear resistance and compressive strength decreased with the difference between A/B ratio and 1∶1 increase.Conclusively,mixing ratios could influence the mechanical proprieties of the cements clinical used,so the use of cements should be under the instructions of the product.

Objective To survey the cognition of women to labor analgesia in Shanghai.Methods One hundred randomized pregnant women filled in the questionnaires at obstetric outpatient department in our hospital.One hundred women took part in the survey after labor at maternity ward,ninety of whom underwent patient-controlled epidural analgesia with 0.1% ropivacaine plus 0.002% fentanyl,and the rest 10 inhaled 50% nitrous oxide mixed with 50% oxygen.Results Before labor analgesia,98% pregnant women thought that the labor was painful;42% were nervous and frightened about the labor pain;90% knew nothing about labor analgesia;63% had no idea about the influences of labor analgesia on infants;and 14% worried that analgesia would have side effects on infants.After labor analgesia,99% women were satisfied with its pain relief effect;100% considered that labor analgesia was necessary;and 20% worried about their newborn babies.Conclusion It is necessary to popularize the knowledge about labor analgesia,which is an important part of work on labor health.

Objective To investigate metformin combined with insulin aspart 30 injection (NovoMix 30) in the treatment of type 1 diabetes mellitus (T1DM) in children and adolescents. Methods A total of 126 T1DM children over 10 years of age were randomly divided into insulin group (A) and insulin + metformin group (B). A group (n=60) was given insulin aspart 30 injection (insulin aspart 30), and B group (n=66) was given the metformin and insulin aspart 30 injection (NovoMix 30). Results The two groups can effectively control blood glucose, but the B group in the blood glucose control time, insulin dosage, the incidence of hypoglycemia, fasting blood glucose and hospitalization time were better than those of A group. There was no significant difference in liver and kidney function before and after oral administration of metformin in B group (P>0.05). Conclusion Metformin combined with insulin is effective and safe in the treatment of children with T1DM.

Objective To compare the therapeutic efficacy of two different administration routes of insulin administra?tion on juvenile type 1 diabetes mellitus (T1DM) complicated with diabetic ketoacidosis(DKA). Methods A total of 223 cases of juvenile T1DM was included in this study, among which 98 were complicated with DKA. Insulin was delivered through either continuous subcutaneous insulin infusion(CSII) by insulin pump or via multiple subcutaneous insulin injec?tion (MSII). Recovery period of blood glucose, insulin doses that were adminstrated, the urinary ketone bodies clearance time, the recovering time from DKA and the frequency of hypoglycemia incidence were all compared between these two routes. Results Both CSII and MSII routes reversed blood glucose and DKA effectively. However the recovering time of blood glucose and DKA, insulin dosage,the urinary ketone bodies clearance time and the frequency of hypoglycemia inci?dence all improved better or quicker in CSII than in MSII. Conclusion CSII by insulin pump is safer and more effective than MSII in the treatment of junvenile T1DM with metabolic disturbance and diabetic ketoacidosis.

Objective To explore the value of human epididymis protein 4(HE4),cancer antigen 125(CA125) and the risk of ovarian malignancy algorithm(ROMA) in the diagnosis of ovarian cancer.Methods Electrochemical luminescence and Enzymelinked immunosorbent assay (ELISA) were used to determine the levels of serum HE4,CA125 in 56 patients with ovarian carcinoma,73 cases of ovarian benign tumor and 50 health women,and the ROMA was calculated by HE4 and CA125 levels depending on the menopause state,drawing the receiver operating characteristics(ROC) curve and calculating the area under the curve(AUC).Results The average levels of the HE4,CA125 and the value of the ROMA were (345.33±605.03)pmol/L,(701.46±1 500.30) U/mL,(58.72±31.00) ％ in the ovarian carcinoma group,(53.84± 14.68)pmol/L,(44.25±45.81)U/mL,(10.80± 6.75) ％ in the ovarian benign tumor group,and (46.03±10.26)pmol/L,(17.39±10.64)U/mL,(6.92±3.85)％ in the health control group respectively,compared with the benign tumor group and the health control group,the ovarian carcinoma group were higher in HE4,CA125 and the ROMA value,and the difference were significantly (P＜0.05),whereas compared in the ovarian benign group and the health group,except the CA125 was higher in the benign group and the difference had statistical significance(P＜0.05),the HE4 level and the value of the ROMA had no statistical significance(P＞0.05).The sensitivities of the HE4,CA125 and ROMA were 71.43％,76.79 ％,89.28％,the specificities were 93.15 ％,53.42％,94.52 ％ and the ROC-AUCs were 0.930,0.809,0.937 respectively.When the specificity for the diagnosis of the ovarian carcinoma was 95.00％,the sensitivities of the HE4,CA125 and ROMA were 80.40％,53.60％,83.90％ respectively.Conclusion HE4 and CA125 combined detection to calculate the ROMA can elevate the sensitivity and specificity for the ovarian carcinoma diagnosis.

Objective: To explore the treatment effect of sticking-needle acupuncture plus tendon-regulating manipulation on pain, swelling and joint dysfunction due to acute ankle sprain.Methods: A total of 80 patients with acute ankle sprain were recruited and divided into a control group and a treatment group according to the random number table method, with 40 patients in each group. Both groups received the same conventional interventions. The control group was treated with additional tendon-regulating manipulation, and the treatment group was treated with tendon-regulating manipulation plus sticking-needle acupuncture. The pain, swelling and joint dysfunction of the ankle were observed in both groups before and after 3 d, 7 d and 14 d of treatment. Results: Before treatment, there was no statistically significant difference in the visual analog scale (VAS) score of pain between the two groups (P>0.05). After treatment, the VAS scores of both groups showed a decreasing trend over time, and the differences within the groups were statistically significant (P<0.05). After 3 d, 7 d and 14 d of treatment, the VAS scores in the treatment group were lower than those in the control group, with statistically significant differences (P<0.05). Before treatment, there was no statistically significant difference in the degree of swelling between the two groups (P>0.05). After treatment, the degrees of swelling in both groups showed a decreasing trend over time, and the differences within the groups were statistically significant (P<0.05). After 3 d and 7 d of treatment, the degrees of swelling in the treatment group were lower than those in the control group, with statistically significant differences (P<0.05). There was no statistical difference in the degree of swelling between the two groups after 14 d of treatment (P>0.05). Before treatment, there was no statistically significant difference in the American Orthopedic Foot Ankle Society (AOFAS) ankle-hindfoot scale score between the two groups (P>0.05). After treatment, the AOFAS ankle-hindfoot scale scores of both groups showed an increasing trend over time, and all the differences within the groups were statistically significant (P<0.05). After 3 d, 7 d and 14 d of treatment, the AOFAS ankle-hindfoot scale scores in the treatment group were higher than those in the control group, with statistically significant differences (P<0.05). Conclusion: Based on the routine intervention, the addition of sticking-needle acupuncture and tendon-regulating manipulation was better in alleviating pain and swelling and improving joint function in patients with acute ankle sprain than the addition of tendon-regulating manipulation alone.