Objective To investigate the effects of the double J tube in treating drug -crystalline upper uri-nary tract obstruction.Methods There were 12 cases of drug -crystalline urinary tract obstruction,which were diag-nosed by CT for urinary tract obstruction.With the help of cystoscope,we retrograde placed the double -J tube in all the 12 patients who with persistently elevated serum creatinine in the next day of admission.Results Nine patients were successfully placed double J stent and serum creatinine of the patients decreased to normal rapidly.There were 2 patients with failed implantation and were with persistently elevated serum creatinine.1 patient with unilateral urina-ry tract obstruction was treated with conservative treatment and eventually cured.Conclusion Patients with drug -induced renal injury should have a routine bilateral ureteral CT scan,once they are clearly diagnosed as drug crystal upper urinary tract obstruction in them,timely placement of bilateral double J tube with the help of cystoscope,which was a simple and effective treatments.

Objective:To investigate the effect of ethyl acetate extract from Cortex periplocae (CPEAE) on apoptosis of human esophageal carcinoma cell line TE-13 and to elucidate its mechanism. Methods:Inhibitory effect of CPEAE on TE-13 proliferation was tested by MTT assay. The morphological changes of cell apoptosis were observed by Giemsa staining and transmission electron microscopy. Cell cycle and apoptotic ratio were tested by flow cytometry (FCM). The protein expression of CDK4 was observed by Western blotting.Results:CPEAE inhibited proliferation of TE-13 cells in a concentration-dependent and time-dependent manner, and its IC_(50) value was (2.443±0.005) μg/mL at 48 h (P<0.05). The characteristic morphological changes of apoptosis were observed in TE-13 cells after treatment with CPEAE under transmission microscope. A typical subdiploid peak was detected by flow cytometry. CPEAE decreased the expression of gene CDK4 in TE-13 cells. Conclusion:CPEAE can induce apoptosis of TE-13 cells. The effect is related with down-regulation of CDK4 expression.

Objective To explore the application value of MSCT 3D reconstruction technique in flexible ureteroscopy and holium laser lithotripsy (FURL) for subrenal calyx calculus. Methods Data of 67 subrenal calyx calculus patients treated with FURL were analyzed retrospectively. The anatomic difference between surgically cured group and uncured one was compared by measuring the renal pelvis subrenal calyx infundibulopelvic angle (IPA), the calyx width and length, as well as the minimum ratio of subrenal calyx neck width and calyx transverse diameter (minN/T) with MSCT 3D reconstruction technique. The anatomic structure factors that may impact the operative success rate were discussed. Results Among the 67 patients, 52 patients were cured and in cured group, and 15 patients were in uncured group. The average IPA value in cured group was significantly higher than that in uncured group:(54.12 ± 21.32)° vs. (42.12 ± 22.68)° , and there was significantly difference (P<0.05). Twenty-six patients performed CT 3D reconstruction and IVU examination at the same time. The level of IPA in CT 3D reconstruction was significantly higher than that in IVU examination : (53.12 ± 10.16)° vs. (47.67 ± 11.25)° , and there was significant difference (t=1.676, P<0.05). Logistic regression analysis showed that IPA and minN/T levels were the influencing factors of FURL for subrenal calyx calculus. Conclusions The MSCT 3D reconstruction technique can better describe the anatomical relationship of the subrenal calyx. The success rate of FURL relates to the IPA value and the min N/T, which is significant in preoperative indication evaluation.

Objective To explore the application value of thromboelastography(TEG)in perioperative evaluation of benign pros-tatic hyperplasia(BPH) patients treated with anticoagulants .Methods To retrospective analyze the intraoperative bleeding ,postop-erative bleeding and transfusion treatment of 120 patients with BPH surgery ,who were treated with anticoagulants .The results of TEG detection and coagulation function test were compared .Results There was no patients with significant intraoperative bleed-ing ,including 40 cases of bleeding after surgery ,80 cases of patients with no bleeding .In patients of bleeding ,there were 32 benign prostatic hyperplasia patients(80 .00% )with low coagulation function detected by TEG detection ,and 18(45 .00% ) with low coagu-lation function detected by routine coagulation function test .The difference of detection rates was statistical significant between the two methods(χ2 =12 .709 ,P=0 .002) .In patients of non-bleeding ,there were 76 benign prostatic hyperplasia patients(95 .00% ) with non-low coagulation function detected by TEG detection ,and 67(83 .75% )with non-low coagulation function detected by rou-tine coagulation function test .The difference in detection rate was significant between the two methods(χ2 =6 .679 ,P=0 .022) . Conclusion TEG could effectively evaluated postoperative bleeding in BPH patients ,guide postoperative transfusion therapy ,which is better than routine coagulation function test .

Objective To investigate which methods can promote the serum microRNA extract production.Methods The sera of healthy persons were treated with 10％ SDS (sodium dodecyl sulfate) and/or sonication at first,then extracted miRNA by routine Trizol method,or the serum miRNA was just extracted by routine Trizol method.The contents of serum miRNA-218 and miRNA-346 were detected by quantitative reverse transcription polymerase chain reaction (qRT-PCR) technique,and qRT-PCR relative quantities among different groups were compared to evaluate influence of different methods on microRNA extract efficacy.Results Compared to routine Trizol extraction method,the qRT-PCR relative quantities of miRNA-218 and miRNA-346 were improved when serum was treated with 10％ SDS and/or sonication at first (P ＜0.05),which was most obviously improved when treated with 10％ SDS combined with sonieation.Conclusions The method that serum was treated with SDS incubation and sonication at first can promote sensitivity of serum microRNA detection.

OBJECTIVETo study the effect of platelet-derived growth factor-BB (PDGFBBB) on rat corpus cavernosum smooth muscle (CCSM) cell proliferation, migration and phenotypic modulation and explore the underlying mechanisms.

METHODSWistar rat CCSM cells were obtained through a modified tissue culture method and identified by immunofluorescence assay. The effect of PDGFBB on the proliferation of CCSM cells was investigated using a CCK-8 kit and the optimum PDGFBB concentration for cell treatment was determined. CCSM cells were treated with vehicle or PDGF-BB at the optimum concentration, and the cell migration was examined using scratch assay; the mRNA expression of the transcription factor myocardin and the contractile phenotype markers αSMA and SMMHC in CCSM cells were determined by qRT-PCR at 24 h and 48 h. The protein expression of myocardin in CCSM cells incubated with PDGFBB for 0, 24 and 48 h was examined by Western blotting.

RESULTIn CCSM cell culture, 96.5%and 96% of the cells were positive for αSMA and smoothelin, respectively. PDGFBB at different concentrations markedly promoted the proliferation of CCSM cells; the optimum PDGFBB concentration for enhancing cell proliferation was 12.5 ng/mL, which induced the migration of CCSM cells and significantly reduced the mRNA expressions of myocardin, αSMA and SMMHC (P<0.01). Exposure to PDGFBB decreased the protein expression of myocardin as the exposure time extended (within 48 h).

CONCLUSIONCCSM cells of a high purity can be obtained by the modified tissue culture method. PDGFBB can promote the proliferation and migration of CCSM cells and cause a phenotypic conversion from the contractile to the synthetic type possibly by down-regulating myocardin.

Actins ; metabolism ; Animals ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Down-Regulation ; Male ; Myocytes, Smooth Muscle ; cytology ; drug effects ; Myosin Heavy Chains ; metabolism ; Nuclear Proteins ; metabolism ; Penis ; cytology ; Phenotype ; Proto-Oncogene Proteins c-sis ; pharmacology ; RNA, Messenger ; Rats ; Rats, Wistar ; Trans-Activators ; metabolism