Objective To improve the skills and level of TURP and peri-operative period managements to the high risky senile patients with large volume benign prostatic hyperplasia.Methods The clinical data of 318 high risky and senile patients whose ages above 80ys,ASA score ＞ 2 and prostate volume ＞ 60g were analyzed retrospectively.They underwent the treatment of TURP.ResultsTotal 318 patients underwent TURP were safe.The operating time ranged from 40 to 85 minutes,averaged 58.2minutes;the volume of blood transfusion ranged from 200ml to 600ml;No serious complications happened during and after the operation.With follow up of 1 ～ 12 months,the International Prostate Symptom Scores(I-PSS) decreased 14.7 averagely,Quality of Life(QOL) decreased 3.3 averagely,Maximal flow rate( Qmax ) increased 6.4ml/s averagely,and Post-voided Residual(PVR) decreased 85.3ml averagely.Conclusion The actions including sufficient preparations and evaluations pre-operatively,the maintenance to the stability of circulatory system during the operation,guaranteeing the demands of blood exchange in the vital organs such as heart,lungs and brain,are the key points to the success.

Objective　To analyze the effects of flexible ureteroscopic Holmium laser lithotripsy on renal function in the treatmen of renal calculi.　Methods　From October 2010 to March 2012,41 cases of solitary renal calculi (24 males and 17 females) were treated with flexible ureteroscopic Holmium laser lithotripsy ( FURL).Patient's mean age was 51.9 ± 15.9 years ( range from 31 to 88 years).Locations of renal calculi detected by image study were 22 cases in middle and upper calyx,9 cases in lower calyx,10 case in renal pelvis.The mean size of calculi was 16.9 ±6.0 mm (range from 10 to 28 mm).Blood samples (2 h pre-operatively,and then 2 h,12 h,24 h,48 h,72 h post-operatively) were collected and serum　NGAL,serum Cys-C were tested　Results　The measured levels of pre-operative NGAL and Cys-C were 3.5 ± 0.6μg/L,501.7±121.3 μg/L,and levels of post-operative NGAL at 2 h,12 h,24 h,48 h and 72 h were 4.2±0.8 μg/L,5.0±1.0 μg/L,4.9±1.4 μg/L,4.3± 1.1 μg/L and 3.8 ±0.1 μg/L,while the according levels of Cys-C were ( 516.4 ± 126.2 ) μg/L,( 723.8 ± 134.8 ) μg/L,( 770.4 ± 162.8 ) μg/L,(671.7 ± 138.3 ) μg/L and 574.0 ± 116.7 μg/L.Serum NGAL began to increase 2 hours after operation (P ＜0.05,and reached the peak in 12 hours,it began to decline 12 hours after surgery,but it was still higher at 72 hours than pre-operative level (P ＜ 0.05.Serum Cys-C showed no obvious ascent 2 hours after operation in FURL group ( P ＞ 0.05 ),but increased obviously 12 hours after operation and lowered down after the peak that occurred 24 hours after surgery.Serum Cys-C still remain above the baseline 72 hours after operation (P ＜0.05).　Conclusions　Flexible ureteroscope lithotripsy can cause reversible damage to renal function after surgery.

ObjectiveTo improve the treatment of urethral stricture and evaluate the applicative effects of wire-guided supporting catheterization in clinical urology. MethodsDuring January 2004 and December 2005, the patients with urethral stricture were dwelled with the catheters using the traditional guideless catheterization (group A). If the dwelling failed,it will be replaced by the wire-guided supporting catheterization using the improved catheters. During January 2006 and December 2009, the patients with urethral stricture were dwelled with the improved catheters using wire-guided supporting catheterization ( group B) straightly. Compared the first-time dwelling success incidence,the incidence of catheter associated urinary tract infection and side-effect events. Then after 1 year, compared the urethral stricture recrudescence and the course of treatment. ResultsThe success incidence of first-time catheterization in group A was 48.98％ (24/49) ,and in group B was 97.94％ (95/97) ,there was significant difference between 2 groups;The incidence of catheter associated urinary tract infection in group A was 12.24％, and 8. 25％ in group B, there was significant difference between 2 groups; As for the course of treatment, group A was 46. 2w,group B was 32.7w;The urethral stricture recrudescence in group A and B were 16.33％ and 9.28％ respectively,and there was significant difference between 2 groups. ConclusionThe wire-guided supporting catheterization, which minimize the injury and simplify the operation of internal urethrotomy,could makes the improved catheter easy to induct and replace, improve the success rate of first time-catheterization and prevent the false tunnel damage and new scar expansion. It could make benefit to reduce of incidence of catheter associated urinary tract infection and urethral stricture recrudescence,but also could shorten the course of treatment significantly.

Objective To retrospectively summarize the diagnosis and treatment experience of acute renal failure caused by urinary calculi obstruction in infants under the age of 6 months in order to improve the level of treat-ment. Methods Between January 2010 and December 2014,15 infants under the age of 6 months with bilateral urinary tract calculi obstruction leading to acute renal failure were treated in West China Hospital,Sichuan University. All cases were Tibetan(10 males,5 females). The ages ranged from 1 month 15 days to 5 months 24 days. The weights ranged from 3. 5 to 7. 0 kg. The clinical characteristics,treatment and clinical outcome were analyzed. Results A total of 9 infants(5 males,4 females)were assessed to be able to tolerate general anesthesia surgery and received positive conservative treatment before operation,and obstruction relief within 6 hours of admission. Six infants (5 males, 1 female)with serious internal milieu disorder,pneumonia,and shock,were assessed as critical cases,who could not tolerate general anesthesia surgery temporarily. Under the emergency blood purification support,they received anti -infection,spasmolysis,rehydration,to correct the internal milieu disorder and obstruction relief within 12 hours of admis-sion. Serum potassium,creatinine returned to normal 12 - 48 hours after obstruction relief. Stone specimens were obtained from 5 cases,and the stone compositions were calcium oxalate stone in 3 cases,calcium oxalate and carbonate apatite mixed stone in 2 cases. A total of 13 cases need further urolithiasis treatment. Conclusions The infants under the age of 6 months with bilateral urinary tract calculi obstruction are more severe with more complications. The emergency treatment principle is to save lives,then relieve the obstruction;surgery should be as brief as possible,since removing the stones is not the primary purpose. If the infants are in critical,life - threatening circumstances,and cannot tolerate general anesthesia surgery,the blood purification will be helpful to gain time and create conditions for treatment.

Objective Promote the management and service of scientific research platforms and make sure their supporting role in hospital.Methods The demand of service object and service evaluation of scientific research platforms were obtained in Peking University People's Hospital,and the demand-oriented service mode for scientific research platforms was established and applied.Results With the implementation of this mode in hospital,the service strategies of scientific research platforms were optimized continuously,the awareness rate and service satisfaction were promoted in some extent.Conclusions This mode based on demand survey can promote the management and service of scientific research platforms in some extent and the better support and service can be provided for the sustainable development of scientific research in hospital.

Cellular mechanics, a major regulating factor of cellular architecture and biological functions, responds to intrinsic stresses and extrinsic forces exerted by other cells and the extracellular matrix in the microenvironment. Cellular mechanics also acts as a fundamental mediator in complicated immune responses, such as cell migration, immune cell activation, and pathogen clearance. The principle of atomic force microscopy (AFM) and its three running modes are introduced for the mechanical characterization of living cells. The peak force tapping mode provides the most delicate and desirable virtues to collect high-resolution images of morphology and force curves. For a concrete description of AFM capabilities, three AFM applications are discussed. These applications include the dynamic progress of a neutrophil-extracellular-trap release by neutrophils, the immunological functions of macrophages, and the membrane pore formation mediated by perforin, streptolysin O, gasdermin D, or membrane attack complex.
Microscopy, Atomic Force ; Neutrophils