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Chronic prostatitis in Korea:a nationwide postal survey of practicing urologists in 2004

Asian Journal of Andrology 2005年第4期7卷 427-432,页

作者： ja-hyeon ku jae-Seung Paick Soo-Woong Kim Department of Urology Seoul National University College of MedicineSeoul 110-744Korea

Aim： To examine the diagnosis and treatment of chronic prostatitis by means of a nationwide postal survey of practicing urologists in 2004. Methods： A random sample of 850 Korean urologists from the Korean Urological Association Registry of Physicians were asked to complete a questionnaire that explored practicing characteristics, attitudes and diagnostic and treatment strategies in the management of chronic prostatitis. Results： Of the 850 questionnaires sent, 302 were returned （response rate 35.5 %） and 275 were induced in the final analysis. More than 50 % believed in a multifactorial etiology for chronic prostatitis and 52 % considered chronic abacterial prostatitis to be bacterial in nature. For routine diagnostic assessment, the most commonly used tests were reported to be urinalysis （95.3 %）, analysis of expressed prostatic secretions （89.5 %） and digital rectal examination （81.1%）. Only a few urologists use specific lower urinary tract cultures. Symptom assessment according to the National Institute of Health-Chronic Prostatitis Symptom Index was less frequently used （12.7 %）. First choices for therapy included antibiotics （96.4 %）, alpha-blockers （71.6 %） and sitz baths （70.5 %）. If unsuccessful, urologists frequently continued to prescribe a second course of either alpha-blockers （69.5 %） or antibiotics （57.8 %）. Conclusion： These data provide a picture of current practice regarding the management of chronic prostatitis in Korea. The diagnostic and treatment practices for prostatitis do not follow standard textbook algorithms. Further studies are needed to elucidate the etiology and pathogenesis of chronic prostatitis and to establish guidelines for its diagnosis and treatment.

关键词： prostatitis chronic pelvic pain syndrome questionnaire diagnosis treatment

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Treatment satisfaction after I year high-power potassiumtitanyl-phosphate photoselective vaporization of the prostate

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Asian Journal of Andrology 2010年第5期12卷 728-734页

作者： ja hyeon ku Min Chul Cho hyeong Seok Kim jae-Seung Paick Soo Woong Kim Department of Urology Seoul National University Hospital Seoul 100-744 Korea

To investigate the factors that influence treatment satisfaction after high-power potassium-titanyl-phosphate （KTP） laser vaporization of the prostate, we compared the characteristics between patients who were satisfied and those who were not satisfied. In all, 97 patients aged between 53-82 years （median age 67 years） underwent high-power KTP laser vaporization of the prostate for lower urinary tract symptoms due to benign prostatic hyperplasia. At 12 months postoperatively, 60 patients were satisfied with the treatment, whereas 37 were dissatisfied. Although there were no differences in International Prostate Symptom Score （IPSS） values at baseline, the satisfied group scored better in total IPSS at 1, 3, 6, and 12 months postoperatively （P 〈 0.05）. At baseline, the maximum flow rate （Qmax） was lower in the dissatisfied group and remained low throughout the follow-up period, with the exception of 1 month postoperatively （P 〈 0.05）, compared with the satisfied group. There were no differences in other objective data between the two groups, including post-void residual and the number of voids based on the frequency-volume charts. In a multivariate model, a higher bladder contractility index was associated with a greater likelihood of treatment satisfaction 12 months after high-power KTP laser vaporization （odds ratio 1.024, 95% confidence interval 1.001-1.048, P 〈 0.05）. Patients who were not satisfied following the surgery had a smaller improvement in subjective symptoms and Qmax. In addition, our findings suggest that the relative risk of treatment dissatisfaction following high-power KTP laser vaporization was increased in patients with weak detrusor contractility.

关键词： benign prostatic hyperplasia potassium-titanyl-phosphate prostate satisfaction vaporization

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Serum prostate-specific antigen value adjusted for non-cancerous prostate tissue volume in patients undergoing radical prostatectomy： a new predictor of biochemical recurrence in localized or locally advanced prostate cancer

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Asian Journal of Andrology 2011年第2期13卷 248-253页

作者： ja hyeon ku Kyung Chul Moon Sung Yong Cho Cheol Kwak hyeon Hoe Kim Department of Urology Seoul National University College of Medicine Seoul 1 10-744 Korea Department of Pathology Seeul National University College of Medicine Seoul110-744 Korea

The aim of this study was to investigate the significance of serum prostate-specific antigen （PSA） value adjusted for total tumor volume （PSA/tumor volume） and serum PSA value adjusted for non-cancerous prostate tissue volume （NCPV）（PSA/NCPV） as a predictor of pathological findings and clinical outcome after radical prostatectomy. Clinical and pathological data of 407 patients （median age： 66.5 years; range： 41.8--85.7 years） were reviewed retrospectively. The median follow-up period was 18. I months （range： 1.0- 107.8 months）. Biochemical recurrence was defined as detectable PSA levels （greater than 0.2 ng ml-1） and the time of biochemical recurrence was taken to be the first time PSA became detectable. In the multivariate model, PSA/NCPV was an independent predictor of extracapsular extension and positive surgical margin （P〈O.05）, but PSA/tumor volume was not. Kaplan-Meier curves revealed that PSA/NCPV correlated with biochemical recurrence-free survival （P〈O.O01; log-rank test） but PSA/tumor volume did not （P=0.275; log-rank test）. PSA/NCPV was also a significant independent prognostic factor for biochemical recurrence-free survival on multivariate Cox proportional hazard analysis （P=0.004, relative risk=2.42）. Our findings suggest that PSA/NCPV is associated independently with extracapsular extension and surgical margin status and may be an independent prognostic variable of PSA recurrence after radical prostatectomy.

关键词： prostatectomy prostatic neoplasm PSA treatment outcome tumor volume

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Are age, anthropometry and components of metabolic syndrome-risk factors interrelated with lower urinary tract symptoms in patients with erectile dysfunction？ A prospective study

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Asian Journal of Andrology 2007年第2期9卷 213-220页

作者： jae-Seung Paick Ji-Hyun Yang Soo-Woong Kim ja-hyeon ku Department of Urology Seoul National University College of Medicine Seoul 111744 Korea Department of Urology Seoul Veterans Hospital Seoul 134791 Korea

Aim： To evaluate the effects of metabolic profiles on lower urinary tract symptoms （LUTS） in men with erectile dysfunction （ED）. Methods： A total of 75 impotent men aged 25-75 years old （mean 58.1 years） were included in the study on a prospective basis. Patients were evaluated with a complete history, physical examination, anthropometry and metabolic profiles. LUTS were assessed using the International Prostate Symptom Score （IPSS）. Results： Overall, there was no correlation between the IPSS and continuous parameters. However, when continuous variables were categorized, some parameters were significantly associated with LUTS. Patients with triglyceride level of 150 mg/dL or higher had more severe symptoms than those with tiglyceride levels less than 150 mg/dL （19.4±2.4 vs. 14.3±1.1, P = 0.033）. When 40 mg/dL was chosen as the high-density lipoprotein （HDL）-cholesterol cut-off level, the IPSS was significantly different between the two groups divided by 40 mg/dL （19.4±2.6 for HDL-cholesterol 〈 40 mg/dL vs. 14.4±1.0 for HDL-cholesterol 2 40 mg/dL, P = 0.042）. The area under the receiver operating characteristic curve （AUROCC） of triglyceride was 65.7% （95% confidence interval [CI], 52.6%-82.3%; P = 0.034） for severe LUTS. However, the AUROCC for ＇HDL-cholesterol＇ was not significant （area, 65.4%; 95% CI, 48.2%-82.7%; P = 0.062）. No other factors were determined to be significant in this regard. Conclusion： The results of the present study indicate that some metabolic profiles might influence LUTS in men with ED.

关键词： lower urinary tract symptoms erectile dysfunction metabolic syndrome body mass index testosterone

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Disease-specific survival in patients with renal cell carcinoma an audit of a large series from Korea

Disease-specific survival in patients with renal cell carcin...

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第十七届全国泌尿外科学术会议

作者： ja hyeon ku Soo Woong Kim jae-Seung Paick Department of Urology Seoul National University College of Medicine

Background To evaluate the question of whether or not young age is an independent prognostic factor for disease-specific survival in Korean patients with renal cell carcinoma(RCC). Methods A total of 785 patients with...

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Magnetic resonance evaluation of human mesenchymal stem cells in corpus cavernosa of rats and rabbits

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Asian Journal of Andrology 2007年第3期9卷 361-367页

作者： Yun-Seob Song ja-hyeon ku Eun-Seop Song Jung-Hoon Kim Jin-Suck Jeon Kong-Hee Lee Sook-ja Kim Hee-Jeong Cheong Ik-Sung Lim Dongho Choi Jong-Ho Won Department of Urology Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Urology Seoul National University Hospital Seoul 110-744 Korea Department of Obstetrics and Gynecology Inha University School of Medicine Incheon 400-103 Korea Department of Radiology Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Internal Medicine Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Urology Soonchunhyang School of Medicine Seoul 140-743 Korea Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Industrial Management ＆ Engineering Namseoul University College of Engineering Cheonan 330-707 Korea Department of Surgery Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Internal Medicine Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea

Aim： To investigate whether the biological process of superparamagnetic iron oxide （SPIO）-labeled human mesenchymal stem cells （hMSCs） may be monitored non-invasively by using in vivo magnetic resonance （MR） imaging with conventional 1.5-T system examinations in corpus cavernosa of rats and rabbits. Methods： The labeling efficiency and viability of SP10-labeled hMSCs were examined with Prussian blue and Tripan blue, respectively. After SPIO-labeled hMSCs were transplanted to the corpus cavernosa of rats and rabbits, serial T2-weighted MR images were taken and histological examinations were carried out over a 4-week period. Results： hMSCs loaded with SPIO compared to unlabeled cells had a similar viability. For SPIO-labeled hMSCs more than lx 105 concentration in vitro, MR images showed a decrease in signal intensity. MR signal intensity at the areas of SPIO-labeled hMSCs in the rat and rabbit corpus cavernosa decreased and was confined locally. After injection of SPIO-labeled hMSCs into the corpus cavernosum, MR imaging demonstrated that hMSCs could be seen for at least 12 weeks after injection. The presence of iron was confirmed with Prussian blue staining in histological sections. Conclusion： SP10-labeled hMSCs in corpus cavernosa of rats and rabbits can be evaluated non-invasively by molecular MR imaging. Our findings suggest that MR imaging has the ability to test the long-term therapeutic potential of hMSCs in animals in the setting of erectile dysfunction.

关键词： human mesenchymal stem cells magnetic resonance stem cells penis cell labeling corpus cavemosa

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The Mystery 40 Hz:Unraveling the Efficacy of Rhythmic Stimulation in Alzheimer's Disease

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Neuroscience Bulletin 2024年第6期40卷 831-834页

作者： Yixuan ku Guangdong Provincial Key Laboratory of Brain Function and Disease Center for Brain and Mental Well-beingDepartment of PsychologySun Yat-sen UniversityGuangzhou510006China Peng Cheng Laboratory Shenzhen518000China

Promises and Challenges of Rhythmic *** advances in research have made significant strides in understanding the potential of 40 Hz rhythmic optogenetic stimulation for the treatment of Alzheimer's disease(AD).A pivotal study conducted by Iaccarino et al.(2016)unveiled that targeted stimulation of interneurons at this specific frequency results in a remarkable reduction ofβ-amyloid levels in a mouse model of AD[1].

关键词： stimulation Alzheimer

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Nearly degenerate ground states of a checkerboard antiferromagnet and their bosonic interpretation

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 84-89页

作者： Haiyuan Zou Fan Yang Wei ku Key Laboratory of Polar Materials and Devices(MOE) School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China Department of Physics Beijing Institute of TechnologyBeijing 100081China Tsung-Dao Lee Institute Shanghai 200240China Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education) Shanghai 200240China Shanghai Branch Hefei National LaboratoryShanghai 201315China

The spin-1/2 model system with antiferromagnetic(AF) couplings on a J1-J2checkerboard lattice, known as the planar pyrochlore model, is strongly frustrated and associated with a two-to-one dimensional crossover. Using the Projected Entangled Simplex States tensor network ansatz, we identify a large number of nearly degenerate states in the frustrated region(J_(1)

关键词： tensor networks frustrated magnetism dimensional crossover degenerate states

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The Sequential Pricing of Ride-Hailing System with Rental Service in the Context of Fleet Electrification

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Journal of Systems Science and Systems Engineering 2024年第1期33卷 77-105页

作者： Yaoyao ku Peng Wu Qiang Ren Yiqing Wang Business School Sichuan UniversityChengdu610065China

Surging demand and reduced capacity in the ride-hailing industry have prompted numerous ride-hailing platforms to build their own car-rental services catering to drivers who do not possess private vehicles. However, the trade-off between the ride-hailing service and the car-rental service is an important issue that is still unclear in theory. Moreover, ride-hailing platforms are transitioning towards all-electric fleets in the context of Carbon Neutrality goals and government regulations. This paper considers a ride-hailing system comprising a monopolist ride-hailing platform, an electric vehicle (EV) rental firm, and a gasoline vehicle (GV) rental firm. Furthermore, we build a stylized model to study the sequential pricing of the system. The equilibrium outcomes show the significant impact of the ride-hailing platform’s decision to continue or withdraw offering EV rental services on EV and GV drivers’ net earnings, rental prices, and wages. The ride-hailing platform providing EV rental services increases EV drivers’ net earnings but decreases the GV driver wages and rental prices. However, the EV rental service offered by the ride-hailing platform does not necessarily lead to an increased total profit for the system. The improved profitability of the system by the ride-hailing platform providing EV rental services is contingent upon lower rider prices and higher fuel costs. The ride-hailing platform’s EV rental services provision also effectively fosters the ride-hailing fleet’s electrification. Furthermore, as the number of riders increases, the ride-hailing platform should reduce the commission rate for EV drivers to maintain competitiveness and profitability.

关键词： Ride-hailing system car rental fleet electrification sequential pricing differential wage scheme

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Identification of thermal front dynamics in the northern Malacca Strait using ROMS 3D-model

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Journal of Oceanology and Limnology 2024年第1期42卷 41-57页

作者： ku Nor Afiza Asnida ku MANSOR Nur Hidayah ROSELI Poh Heng KOK Fariz Syafiq Mohamad ALI Mohd Fadzil Mohd AKHIR Institute of Oceanography and Environment Universiti Malaysia TerengganuKuala Nerus 21030Malaysia Faculty of Science and Marine Environment Universiti Malaysia TerengganuKuala Nerus 21030Malaysia

The thermal front in the oceanic system is believed to have a significant effect on biological *** an era of climate change,changes in heat regulation between the atmosphere and oceanic interior can alter the characteristics of this important *** the simulation results of the 3D Regional Ocean Modelling System(ROMS),we identified the location of thermal fronts and determined their dynamic variability in the area between the southern Andaman Sea and northern Malacca *** Single Image Edge Detection(SIED)algorithm was used to detect the thermal front from model-derived *** show that a thermal front occurred every year from 2002 to 2012 with the temperature gradient at the location of the front was 0.3°C/*** to the years affected by El Ni?o and negative Indian Ocean Dipole(IOD),the normal years(e.g.,May 2003)show the presence of the thermal front at every selected depth(10,25,50,and 75 m),whereas El Ni?o and negative IOD during 2010 show the presence of the thermal front only at depth of 75 m due to greater warming,leading to the thermocline deepening and enhanced *** May 2003,the thermal front was separated by cooler SST in the southern Andaman Sea and warmer SST in the northern Malacca *** higher SST in the northern Malacca Strait was believed due to the besieged Malacca Strait,which trapped the heat and make it difficult to release while higher chlorophyll a in Malacca Strait is due to the freshwater conduit from nearby rivers(Klang,Langat,Perak,and Selangor).Furthermore,compared to the southern Andaman Sea,the chlorophyll a in the northern Malacca Strait is easier to reach the surface area due to the shallower thermocline,which allows nutrients in the area to reach the surface faster.

关键词： regional ocean modelling system thermal front Andaman Sea Malacca Strait single image edge detection algorithm

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