ObjectiveTo investigate the efficacy of transurethral resection and ball pouch dilatation for treatment of ureterostenosis.MethodsThe clinical data of 49 cases of ureteral stricture were analyzed retrospective analysis from June 2008 to June 2011 with 20 cases of male patients and 29 cases of female patients.The age was 15 to 56 years,with a mean age of 40 years.Ipsilateral renal function were mild impairment in 4 cases,moderate impairment in 35 cases,and severe damage in 10 cases.There were ureteropelvic junction etenosis in 11 cases,upper ureteral stricture in 13 cases,and lower segment stenosis in 25 cases.The ureteral stricture length was 0.3 to 2.0 cm,with a mean of 1.2 cm.Seventeen patients were treated with transurethral resection and ball pouch dilatation by minimally invasive percutaneous nephrostomy,and 31 cases were completed by ureteroscopy.The ureteral stents were removed by ureteroscope after 3 - 6 months.45 cases were followed up for 12 -43 months,with a mean of 24 months. ResultsForty-eight cases were completed smoothly with 1 case converted to open surgery.The surgical time was 25 to 95 min with a mean of 42 min.The postoperative hospital stay was 2 to 6 d with a mean of 4 d.In the follow-up of 45 cases,B ultrasound and CT scan showed hydronephrosis reduced significantly in 39 patients,IVU showed unobstructed ureter without significant stenosis.And 6 cases showed no significant changes in hydronephrosis. Conc(t)usionThe method of transurethral resection and ball pouch dilatation has good clinical effect,less pain and shorter hospital stays,which provides a new and effective treatment for patients with ureteral stricture.

This study was aimed to optimize the belt drying process conditions ofChuan-XiongConcrete. On the basis of the single factor experiment with drying temperature, feeding speed, drying time as three main variables and the transfer rate of ferulic acid as variable, the optimization of the belt drying process conditions ofChuan-XiongConcrete was identified using Box-Behnken Design. The results showed that the optimal drying parameters were as follows. The feeding speed was 1 kg·h-1. The drying temperature was 95℃. The drying time was 90 min. The transfer rate of ferulic acid was 95.48%. Three verification experiments were taken under these technological parameters. And the average transfer rate of ferulic acid was 95.71%, which was close to the predicted value of the model. It was concluded that the belt drying process of Chuan-Xiong Concrete was steady and feasible, which can be used in the drying process ofChuan-XiongConcrete.

Objective To explore the mechanism of malignant behavior of cervical cancer(CC)cells based on AMP-activated protein kinase(AMPK)/rapamycin target protein(mTOR)signaling pathway mediated by nucleo-tide-binding oligomerization domain receptor 2(NOD2).Methods Bioinformatics analysis was performed to deter-mine the expression of NOD2 in CC tissue.Plasmids targeting NOD2(shNOD2)and shRNAs negative control(shNC),NOD2 overexpression(NOD2)and vectors(Vec)were transfected into CC cells.The effect of NOD2 on the growth of CC cells was determined by cell counting kit-8 assay,colony formation and Transwell cell invasion as-say.Transcriptome analysis was performed by high throughput RNA sequencing(RNA-Seq).Western blot was used to detect the expression of NOD2,AMPK/mTOR signaling pathway and autophagy protein in the cell line.24 female BALB/c nude mice were randomly divided into four groups,with 6 mice in each group:vector group(Vec group),NOD2 overexpression group(NOD2 group),shNC group and shNOD2 group.The distant metastasis mod-el was established in mice,and the fluorescence intensity of lung metastasis was monitored and the number of lung metastasis nodules was counted.Results On-line database analysis showed that the expression of NOD2 in CC tis-sues was significantly higher than that in normal tissues,and there were significant differences in the mRNA expres-sion of NOD2 in different stages of CC(P＜0.05).In addition,the high expression of NOD2 was associated with poor overall survival and disease-free survival(P＜0.05).NOD2 overexpression promoted the proliferation,colony formation,migration and invasion of CC cells,while NOD2 knock-down was the opposite.Consistent with the re-sults in vitro,the lung colonization and lung metastasis of CC cells in NOD2 group were significantly higher than those in Vec group(P＜0.05),while those in shNOD2 group were significantly lower than those in shNC group(P＜0.05).RNA-Seq results showed that the expression of NOD2 was significantly related to AMPK signal activa-tion,mTOR signal inhibition,autophagy regulation pathway activation and autophagy formation.Compared with shNC group,the expression of phosphorylated AMPK and LC3 protein decreased significantly in shNOD2 group(P＜0.05),and the expression levels of phosphorylated mTOR and p62 protein increased significantly(P＜0.05).Compared with Vec group,the expression levels of LC3 and AMPK protein in NOD2 group increased significantly(P＜0.05),and the expression levels of phosphorylated mTOR and p62 protein decreased significantly(P＜0.05).Compared with shNC group,the point accumulation of GFP-mRFP-LC3 in shNOD2 group decreased signifi-cantly(P＜0.05).Compared with Vec group,the point accumulation of GFP-mRFP-LC3 increased significantly(P＜0.05).Conclusion NOD2 may promote the proliferation,migration and invasion of CC through AMPK/mTOR signal,and its mechanism partly involves autophagy activation.

Caspases play important roles in cell apoptosis. Measurement of the dynamics of caspase activation in tumor cells not only facilitates understanding of the molecular mechanisms of apoptosis but also contributes to the development, screening, and evaluation of anticancer drugs that target apoptotic pathways. The fluorescence resonance energy transfer (FRET) technique provides a valuable approach for defining the dynamics of apoptosis with high spatio-temporal resolution. However, FRET generally functions in the single-cell level and becomes ineffective when applied in the high throughput detection of caspase activation. In the current study, a FRET sensor was combined with capillary electrophoresis (CE) to achieve a high throughput method for cellular caspase detection. The FRET-based CE system is composed of a homemade CE system and a laser source for detecting the dynamics of caspase-3 in various cells expressing sensors of caspase-3 that have been treated with anticancer drugs, such as cell cycle-independent drug cisplatin and specific cell cycle drugs camptothecin and etoposide, as well as their combination with tumor necrosis factor (TNF). A positive correlation between the caspase-3 activation velocity and drug concentration was observed when the cells were treated with cisplatin, but cells induced by camptothecin and etoposide did not show any apparent correlation with their concentrations. Moreover, different types of cells presented distinct sensitivities under the same drug treatment, and the combination treatment of TNF and anticancer drugs significantly accelerated the caspase-3 activation process. Its high throughput capability and detection sensitivity make the FRET-based CE system a useful tool for investigating the mechanisms of anticancer drugs and anticancer drug screening.
Antineoplastic Agents ; pharmacology ; Camptothecin ; pharmacology ; Caspase 3 ; metabolism ; Cisplatin ; pharmacology ; Drug Screening Assays, Antitumor ; Electrophoresis, Capillary ; methods ; Enzyme Activation ; drug effects ; Etoposide ; pharmacology ; HeLa Cells ; Hep G2 Cells ; Humans ; Neoplasms ; enzymology ; pathology ; Time Factors ; Tumor Necrosis Factor-alpha ; pharmacology