objective: To study the relation of anchorage control and consumption of Nance arch. Methods: J hook anchorage, Nance arch with J hook anchorage, and Nance arch anchorage were used in 15, 12 and 16 cases for orthodontic treatment. All anchorage consumption of the first molar was measured on dental cast. Results: Forward movement of first molar in all of the cases was observed after treatmment( P

Objective To evaluate the role of combined use of tacrolimus and leflunomide (Lef) in prevention of acute allograft rejection in rats.Methods The rats were randomly divided into control group, tacrolimus treated group, Lef treated group and tacrolimus +Lef treated group. The drugs were given by gavage from day 0 to day 9 after transplantation. Graft survival was observed. Some cases of allografts were examined histologically 7 days after transplantation. At the same time, the levels of CD4 + , CD8 + T cell subsets in peripheral blood were examined by using flow cytometry and the hepatic function as well as renal function of recipents were also tested. Results The graft survival time in control group, tacrolimus treated group, Lef treated group and tacrolimus+Lef treated group was 7.14 ? 1.07 days, 11.14 ? 1.73 days, 11.29 ? 1.80 days and 14.00 ? 2.49 days, respectively. The histological study revealed the rejection in the tacrolimus+Lef treated group was slighter than the tacrolimus treated group and Lef treated group. The levels of CD4 + T cell subsets in the peripheral blood of the tacrolimus+Lef treated group were much lower than those of the tacrolimus treated group and Lef treated group 7 days after transplantation. The levels of CD8 + T cell subsets and the hepatic function and renal function had no significant difference.Conclusion Combined use of tacrolimus and Lef had better effect in prevention of acute rejection in allograft rats than monotherapy without increasing side effects.

Objective To investigate the significance of carcinoembryonic antigen (CEA),carbohydrate antigen 19-9 (CA19-9),carbohydrate antigen 125 (CA125),neuron specific enolase (NSE),cytokeratin 19 fragment (CYFRA21-1) and squamous cell carcinoma antigen (SCC) for evaluation of first-line chemotherapeutic response and the prognostic value of these markers for prediction of overall survival (OS) in patients with advanced lung cancer.Methods Patients diagnosed with Ⅲ b/Ⅳ stage untreated,primary lung cancer and received first-line chemotherapy in Peking University Cancer Hospital & Institute from June 2013 to December 2014 were enrolled retrospectively into this study.The results of tumor markers before and after two cycles of chemotherapy and the clinical data of 181 eligible patients,including 133 males and 48 females with the average age of 58 years,were collected.The serum levels of six tumor markers were measured by electrochemiluminescence assay.Using RECISTv1.1 as standard,the sensitivity and specificity of tumor markers in classifying PR,SD,PD,were observed.The Kappa agreement test was used to evaluate the correlation between serum tumor markers and CT in evaluating chemotherapy response.The follow-up of OS was derived by telephone.Results The top three positive rates of biomarkers were CEA,CA125 and NSE in adenocarcinoma patients,CYFRA21-1,NSE and SCC in squamous carcinoma patients,NSE,CA125 and CYFRA21-1 in small cell lung cancer patients,respectively.In Kappa agreement test,the changes of serum levels of CEA and CA125,CYFRA21-1 and SCC,NSE were significantly correlated with CT for chemotherapy response evaluation in the mention above three kinds of carcinomas respectively (P ＜ 0.05).The sensitivity of tumor markers predicting PR was more than 90％,but the specificity was only 20％-58.3％,meanwhile,the specificity for SD and PD was high,but the sensitivity was low 0-66.7％).In the prognostic evaluation based on RECISTv1.1,there was no statistical significance for classifying PR,SD and PD in adenocarcinoma patients (median overall survival 17 months vs 22 months vs 14 months,P ＞0.05),but the OS of PR was longer than SD and PD in squamous and small cell lung carcinoma (median overall survival 28 months vs 22 months vs 4 months,12 months vs 8 months vs 8 months,P ＜ 0.05).Of these six tumor markers,only SCC was of statistical significance for classifying PR,SD and PD in squamous carcinoma (median overall survival 30 months vs 1 1 months vs 4 months,P ＜ 0.05).Conclusions Tumor marker has high sensitivity for predicting PR,but the value of tumor marker predicting SD and PD of advanced lung cancer was limited.The evaluation of patients would be comprehensive by combined use of tumor markers and CT.The changes of SCC after 2 cycles of chemotherapy are predictive of survival in squamous cell carcinoma patients.

Objective:To investigate the prevalence of Escherchia albertii in Shanxi province. Methods:The chicken intestines were enriched in EC broth. The eae gene was detected by PCR, and the eae-positive EC enrichments were inoculated in MacConkey agar plate. The eae-positive lactose non-fermenting isolates were presumed as Escherchia albertii, and then analyzed by triplex-PCR, 16S rDNA sequencing and MLST. Results:Two suspected Escherchia albertiiwere isolated from 250 samples of chicken intestines. It was identified as Escherchia albertii by phenotypic, specific genes,16S rDNA sequencing, and MLST analyses . The cytolethal distending toxin B ( cdtB) showed positive by PCR,and they were clusted to Ⅱ/Ⅲ/Ⅴ group by sequencing. Conclusion:This study showed that the Escherchia albertii was existed in Shanxi province, China.

Objective:To investigate the prevalence of Escherchia albertii in Shanxi province. Methods:The chicken intestines were enriched in EC broth. The eae gene was detected by PCR, and the eae-positive EC enrichments were inoculated in MacConkey agar plate. The eae-positive lactose non-fermenting isolates were presumed as Escherchia albertii, and then analyzed by triplex-PCR, 16S rDNA sequencing and MLST. Results:Two suspected Escherchia albertiiwere isolated from 250 samples of chicken intestines. It was identified as Escherchia albertii by phenotypic, specific genes,16S rDNA sequencing, and MLST analyses . The cytolethal distending toxin B ( cdtB) showed positive by PCR,and they were clusted to Ⅱ/Ⅲ/Ⅴ group by sequencing. Conclusion:This study showed that the Escherchia albertii was existed in Shanxi province, China.

Endophytic fungi are promising producers of bioactive small molecules. Bioinformatic analysis of the genome of an endophytic fungus