Objective To study the biological behavior of silicon nanoparticles in penetrating the blood-prostate barrier. Methods Silicon nanoparticles were prepared by means of chemical procedures.The silicon nanoparticles were added into HT1080 cells and cultured for 48 h to observe the distribution of nanoparticles in the cells.The nanosuspension at gradient concentration (0.005,0.010,0.015,0.020,0.025 ml/g)was injected into 100 mice (20 mice of each group) intraperitoneally or via tail vein to study the distribution of nanoparticles in the prostate.Additional 20 mice served as controls.The mortality and toxic reaction at 2 weeks after injection were also recorded. Results Electronic microscopy confirmed the penetration of silicon nanoparticles into HT1080 cells,the prostate gland and interstitial tissue,with intracellular ultrastructure intact.There was no significant difference in body weight,diet,defecation and activities among the 5 treatment groups and control group. Conclusions Silicon nanoparticles can overcome the obstruction of drug transportation by blood-prostate barrier or other biomembranes and thus may be promising as a drug carrier in treatment of prostate diseases.

Objective To evaluate the effects and complications of percutaneous nephrolithotomy (PCNL) in the treatment of renal stone after repeated extracorporeal shockwave lithotripsy (ESWL).Methods Forty-four patients who had a history of repeated ESWL (treatment group) and 50 patients with-out surgical intervention (control group) were submited to PCNL,and clinical data was documented in details and analyzed.Results The time to establish access in treatment group and control group was (11.8 ± 4.1) min and (10.9 ± 2.5) min,respectively,and there was no significant difference (t =1.308,P =0.194).The time to extract stone in both groups was (92.0 ± 13.5) min and (66.6 ± 17.6) min,respectively,and there was significant difference (t =7.776,P =0.000).The operative time in treatment group was (113.9 ± 12.0) min,which was longer than that in control group with (87.6 ± 13.6) min (t =8.354,P =0.000).The clearance in both groups was 81.8％ and 94.0％,and there was no significant difference (x2 =3.361,P =0.067).The was no death or other severe complication in both groups.Conclusions The operation time in treatment group was longer than that in control group,and there was no significant difference in clearance and complication rate.Thus it was safe and effctive to perform PCNL in these patients with a history of failed repeated ESWL.

Objective To study the elongation factor 1α(EF-1α) gene functions in prostate cancer cell line DU145 in the aspects of cell proliferation and clone formation by using the RNA interference technique. Methods DU145 cell lines were divided into control group, transfection control group transfected with scramble siRNA and experimental group transfected with EF-1α siRNA. After transfecting EF-1α siRNA into DU145 cell line, the down-regulation of EF-la expression in DU145 cell line was confirmed by Western blotting and immunofluorescence staining. Then, the cell proliferation and clone formation assays were carried on in these 3 groups of DU145 cells. Results Compared with controls, the specific down-regulation of EF-1α expression was achieved in experimental group only. Compared with control group, after the down-regualtion of EF-1α in DU145 cell line, the cell proliferation rate decreased from day 4 to day 7 after transfection by 45. 9%, 53. 5% , 35. 3% and 38. 1% , respectively(P<0. 05). The clone formation number in experimental group decreased by 67.0% (P<0. 01). Conclusions The down-regulation of EF-1α has a negative impact on prostate cancer cell proliferation and clone formation. EF-1α might be an appropiate targeting gene in prostate cancer targeting therapy.

Objective To study the effect of down-rdgulation of EF-1 alpha gene in prostate cancer cell line DU-145 on cancer cell migration and invasion by using RNA interference technique. Methods The prostate cancer cell line DU-145 was divided into three groups: the control group (untransfected with siRNA), randomly control group (randomly transfected with siRNA) and experimental group (transfected with EF-1 alpha siRNA). Localization of EF-1 alpha and its relationship with F-actin in cytoplasm were analyzed by immunofluorescence technique. Cancer cell migration and invasion capability of DU145 cells were studied by transwell technique in these three groups. Results EF-1 alpha expression in DU145 cell line was down-regulated by using RNA interference technique. EF-1 alpha was localized in cytoplasm and co-located with F-actin. The down-regualtion of EF-1 alpha did not change the F-actin distribution in cytoplasm. The cell migration and invasion study showed that after seeding 20×104 DU145 cells into the upper chamber of transwall for 12 hours, the cells collected in the lower chambers were (10.6±1.0)×104 in control group, (11.2±0.8)×104 in randomly control group and (3.9±0.6)×104 in experimental group. Compared with controls, the cancer cell migration and invasion capability was significantly inhibited to only 37.1% (t= 13.9, P<0.05) after the specific down-regulation of EF-1 alpha expression in DU145 cells. Conclusions The down-regulation of EF-1 alpha expression has negative impacts on prostate cancer cell migration and invasion. EF-1 alpha plays important roles in prostate cancer local invasion.

OBJECTIVE:To study the therapeutic efficacy of Yixinkangtai capsules(YXKT)on climacteric syndrome in males.METHODS:360cases of male climacteric syndrome randomly divided into2groups:trial group(220cases)was treated with YXKT for3wks and control group(140cases)received placebo.RESULTS:In the trial group,the rate of symptomatic improvement was74.3%.Before and after3-week treatment,blood testosterone levels were(131.51?19.12)mg/L and(253.78?21.45)mg/L;SOD levels were(1068?121.4)IU/(g?Hb)and(1178.1?132.6)IU/(g?Hb),MDA levels were(7.6?0.8)?mol/L and(5.8?0.6)?mol/L respectively,and depression score was improved as well.There were significant dif?ferences in all above-mentioned parameters between2groups.CONCLUSION:YXKT is effective and safe for treating cli?macteric syndrome in males.

OBJECTIVE:To compare the cost and efficacy between three different haemostatics in treating postoperative bleeding following suprapubic prostatectomy.METHODS:Using cost-effectiveness analysis,reptilase,aprotinin and minirin were evaluated.RESULTS & CONCLUSION:From pharmacoeconomic view,use of reptilase in treating postoperative bleeding is the best therapeutic regimen.

Objective To determine the diagnostic significance of detecting the specific epithelial keratin CK 20 mRNA in peripheral venous blood from patients with bladder carcinomas. Methods Reverse transcription coupled with two step polymerase chain reaction (nested RT PCR) was used to detect CK 20 mRNA expression in the peripheral blood from patients with bladder carcinomas. Results Detection of CK 20 mRNA expression was positive in 37 of 91 patients with bladder carcinoma (41%).Among 20 patients with distant metastasis,17 were positive (85%).CK 20 mRNA was not detectable in the blood samples from 25 normal individuals.The frequency of positive CK 20 mRNA expression was signficantly higher in those with distant metastasis. Conclusions The presence of CK 20 mRNA expression in peripheral blood may be used as an early indicator of hematogenous metastasis of bladder carcinoma cells.

Objective To evaluate the efficacy and safety of bladder hydrodistention for the treatment of ketamine-associated bladder dysfunction.Methods Six patients were required to withdraw the ketamine and treated with bladder hydrodistention therapy and sodium hyaluronate irrigation,and medicine to pretect liver and kidney was also used.Results The biopsies of 6 cases demonstrated the cystitis through biopsy.Lower urinary tract symptoms such as urgency,thamuria and odynuria were significantly relieved after bladder installation within 30 days.The O'Leary-Sant ICSI scores and the ICPI scores reduced to 3.5 ± 1.6,2.8 ± 1.5 respectively.The functional bladder capacities increased to an anverage of (180 ± 28)ml,.2-3 times of nocturia,Qmax (14.4 ± 4.3) ml/s.All cases were followed up for 4 to 18 months.Symptoms disappeared or were significantly relieved in all patients.Conclusion Contracture of bladder might be the main presentation of ketamine-associated bladder dysfunction.Intravesical hydrodistention therapy and sodium hyaluronate irrigation could be the safe and effective therapy in the treatment of katamine-associated dysfunction.

Objective To investigate the influence of tethered cord syndrome (TCS) on the up-per urinary tract and its etiology. Methods Forty patients with TCS diagnosed by spinal MRI were enrolled in this study. There were 21 males and 19 females with mean age of 23 years old. The course of disease ranged from 1 to 40 years. Urinalysis, mid-stream urine culture, serum creatinine(SCr), urinary system ultrasound, IVU, eystography and urodynamic study were carried out on all patients. Results Urinary tract infection was found in 17 patients and increased level of SCr was found in 6 pa-tients (251.64±98.5μmol/L). Of the 29 patients who underwent urinary system ultrasound examina-tion, 12 cases had hydronephroais and dilated upper ureter. Of the 30 patients who underwent IVU, 10(33.3%) had ureterectasia and hydronephrosis, 22 cases had bladder turriform or Christmas tree like deformity with diverticulum and trabeculum. Of the 22 patients accepted cystography, 17 cases had vesieoureteral reflux on 27 sides. Post-void residual (PVR) was evaluated in 35 patients and found increased in 31 cases. Cystometry had been done in 33 patients. The mean value of maximal detrusor pressure (Pdetmax) during filling phase was 41.2±20.9 cm H2O. The detrusor compliance was 22.35±18.8 ml/cm H2O. During voiding phase, detrusor-sphincter dyssynergia(DSD)was observed in 16 patients, detrusor areflexia was observed in 16 patients and detrusor underactivity was observed in 13 patients. Resting urethral pressure profilemetry was measured in 16 patients. Maximal urethral closure pressure (MUCP) was 76.1±33.1 cm H2O. The upper urinary tract deterioration was de-fined as increased SCr, hydronephrosis or vesicoureteral reflux. There were 20 patients diagnosed as upper urinary tract deterioration. The compliance of the upper urinary tract deteriorating group and the no-deteriorating group was 9.4±7.8 vs 19.3±15.8 ml/cm H2O, Pdetmax was 43.1±21.2 vs 24.0±11.9 cm H2O, PVR 189.0±138.0 vs 47.8±36.8 ml, MUCP 86.2±32.4 vs 46.8 5±20.8 cm H2O, incidence of damaged detrusor 100.0% vs 69.2% and DSD 65.0% vs 23.1%, respectively. There were significant differences between the 2 groups(P<0.05). And when comparing the VUR group with no VUR group, the incidence of urinary tract infection was 94.1%(16/17) vs 20.0%(1/ 5) (P=0.003). And when comparing urinary tract infection group with no infection group, the inci-dence of upper urinary tract deterioration was 88.2% (15/17) vs 21.7%(5/23)(P=0.000). Condn-sion Low compliance bladder, high Pdetmax during filling phase, increased PVR, high MUCP, damage of detrusor contractive function and DSD are the risk factors for upper urinary tract deteriora-tion in the TCS patients.

0bjective To establish a standard curve method with more accuracy employed in fluorescence real-time PCR(RT-PCR)as a alternation of the general method.Methods β-actin and KLK11 plasmid DNA for quantitative standard curve were constructed in our study,and Plasmids of β-actin was employed as a internal control.After serial dilution these plasmid were used as DNA standard to obtained slope.Expression of these two genes in malignant prostate cancer cell line LNCAP were tested by real-time PCR,and we analyzed the RT-PCR results with two different methods and compared their accuracy.Results Thestandards curves made from these linear DNA standards showed good linearity (R2=0.991 and 0.992 for β-actin and KLK11 standards graphs),but also displayed a discrepancy in their PCR efficiency(β-actin 123% and KLK11 99%).There were different results after two different stand curve analytical method:the expression of KLK11 mRNA in LNCAP was downregulated in general standard curve method.In the new analytical method,howerer,KLK11 upregnlated for 4.46-fold.And there was a significant difference between aplification efficiency of targt gene and internal control gene(t=4.829,P<0.05).Conclusions Compared with general standard curve method,the new advanced standard curve method described here avoids an error which considers there is identical amplification efficiency between target gene and internal reference gene.It is considered to be a more correct analytical method in fluorescence real-time PCR.