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Association of time to prostate-specific antigen nadir and logarithm of prostate-specific antigen velocity after progression in metastatic prostate cancer with prior primary androgen deprivation therapy

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Asian Journal of Andrology 2017年第1期19卷 98-102页

作者： Jeremy YC Teoh James HL Tsu Steffi KK Yuen Peter KF Chiu Samson YS Chan ka-Wing wong Kwan-Lun Ho Simon SM Hou Chi-Fai Ng Ming-Kwong Yiu Division of Urology Department of Surgery The Chinese University of Hong Kong Prince of Wales Hospital Shatin Hong Kong China Division of Urology Department of Surgery Queen Mary Hospital University of Hong Kong Hong Kong China.

We investigated the association of time to prostate-specific antigen nadir （TTPN） and logarithm of prostate-specific antigen velocity after progression Log（PSAVAP） in metastatic prostate cancer with prior primary androgen deprivation therapy （ADT）. All metastatic prostate cancer patients treated with primary ADT from 2000 to 2009 were reviewed. Patients who developed disease progression were included in the subsequent analyses. Patients were categorized into three groups according to their TTPN： TTPN of 〈3 months, 3-17 months, and 〉17 months. We compared the Log（PSAVAP） between the different TTPN groups using Mann-Whitney U-test and Kruskal-Wallis test. Further multiple linear regression analyses on Log（PSAVAP） were performed to adjust for other potential confounding factors. Among 419 patients who were treated with primary ADT, 306 patients developed disease progression with a median follow-up of 28 months, Longer TTPN was associated with lower Log（PSAVAP）（P = 0.008） within all subgroup analyses （TTPN of 〈3 vs 3-17 months, P = 0.020; TTPN of 3-17 vs 〉17 months, P = 0.009; and TTPN of 〈3 vs 〉17 months, P = 0.001）. Upon multiple linear regression analyses, baseline PSA （regression coefficient 0.001, P = 0.045）, PSA nadir （regression coefficient 0.002, P = 0.040）, and TTPN （regression coefficient -0.030, P = 0.001） were the three factors that were significantly associated with Log（PSAVAP）. In conclusion, a longer TTPN was associated with lower Log（PSAVAP） in metastatic prostate cancer patients following primary ADT. TTPN cut-offs at 3 months and 17 months appeared to have prognostic significance in predicting Log（PSAVAP）. TTPN may serve as a good prognostic indicator in deciding the treatment strategy in patients with disease progression.

关键词： androgen deprivation therapy prostate cancer prostate-specific antigen velocity after progression ti me to prostate-specific antigen nadir

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Liver transplantation:would it be the best and last chance of cure for hepatocellular carcinoma with major venous invasion?

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Hepatobiliary Surgery and Nutrition 2021年第3期10卷 308-314页

作者： ka Wing Ma Albert Chi Yan Chan Kenneth Siu Ho Chok wong Hoi She Tan To Cheung Wing Chiu Dai James Yan Yue Fung Chung Mau Lo Department of Surgery The University of Hong KongHong KongChina Department of Medicine The University of Hong KongHong KongChina

Background:Hepatocellular carcinoma(HCC)with portal vein tumour thrombus(PVTT)signifies advanced disease,whether LT confers any survival superiority over resection remains ***:A propensity score matched(PSM)analysis of liver transplantation(LT)and liver resection(LR)for HCC with PVTT was ***:A consecutive series of 88 patients who received either LT(10 DDLTs and 3 LDLTs)or LR(n=75)respectively were *** PSM,the LT group has a higher MELD score(17.3 vs.7.8,P<0.001),lower serum AFP levels(96 vs.2,164 ng/mL,P=0.017)and smaller tumour size(4 vs.10 cm,P<0.001).The 5-year overall survival for LT and LR were 55.4%and 15.9%respectively(P=0.007).After matching for serum AFP levels and tumour size,1-,3-and 5-year overall survival for LT were 81 ng/mL,3.9 cm,80%,70%and 70%and the corresponding rates for LR were 1,417 ng/mL,5.3 cm,51.8%,19,6%and 9.8%(P value=0.12,0.27 and 0.009 respectively).Conclusions:LT is associated with significantly better oncological outcomes in HCC patients with PVTT involving the lobar or segmental level.A modest expansion of selection criteria to include small HCC with segmental PVTT should be considered.

关键词： Liver transplantation(LT) portal vein tumour thrombus liver resection(LR)Submitted Aug 10,2019.Accepted for publication Oct 15,2019.

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ABC/2 formula for"bedside"postoperative pneumocephalus volume measurement

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Chinese Neurosurgical Journal 2022年第4期8卷 284-291页

作者： David Yuen Chung Chan Eric Yuk Hong Cheung ka Ho Hui Cecelia Mei Sze Leung Stephanie Chi Ping Ng Wai kit Mak George Kwok Chu wong Tat Ming Danny Chan Wai Sang Poon Division of Neurosurgery Department of SurgeryFaculty of MedicinePrince of Wales HospitalThe Chinese University of Hong KongHong KongSARChina

Background:Postoperative pneumocephalus is associated with a higher risk of recurrence of chronic subdural hematoma(cSDH).However,there is no verified simple way to measure the pneumocephalus volume at the bedside for daily clinical *** ABC/2 method was shown to be a simple and reliable technique to estimate volumes of intracranial lesions,such as intracranial *** study aims to evaluate the accuracy of the ABC/2 formula in estimating volumes of pneumocephalus,as compared to the gold standard with computer-assisted volumetric ***:A total of 141 postoperative computed tomographic(CT)brain scans of cSDH patients with burr-hole drainage were *** volume was measured independently by both the ABC/2 formula and the computer-assisted volumetric *** the computer-assisted measurement,the volume of the air was semiautomatically segmented and calculated by computer *** regression was used to determine the correlation between the ABC/2 method and computer-assisted ***:The postoperative pneumocephalus volume after bilateral burr-hole drainage was significantly larger than that of unilateral burr-hole drainage(29.34 ml versus 12.21 ml,p<0.001).The estimated volumes by the formula ABC/2 significantly correlated to the volumes as measured by the computer-assisted volumetric technique,with r=0.992(p<0.001).The Pearson correlation coefficient is very close to 1,which signifies a very strong positive correlation,and it is statistically ***:An excellent correlation is observed between the ABC/2 method and the computer-assisted *** study verified that the ABC/2 method is an accurate and simple"bedside"technique to estimate pneumocephalus volume.

关键词： ABC/2 Chronic subdural haematoma Burr-hole Pneumocephalus

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Bowtie Slot-and-Dipole Dual-Polarized Antenna

Bowtie Slot-and-Dipole Dual-Polarized Antenna

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2005'全国微波毫米波会议

作者： ka-Ming MAK Hang wong Kwai-Man LUK Department of Electronic Engineering City University of Hong Kong 83 Tat Chee Avenue

＜正＞In this paper,a shorted bowtie dual-polarized slot antenna integrating with parasitic patches is *** a conventional directional slot antenna,which generally is placed above a ground reflector,the proposed antenna is directly connected to the ground plane by shorted walls and a directional radiation is *** attached patches are utilized for generating a symmetric radiation *** novel bowtie antenna is designed for GSM 1800,1900 and 3G system working in 1.71GHz to 2.17GHz *** simulated isolation between channels is maintained below -30dB.

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Sheng Jiang San, traditional multi-herb formulation, exerts anti-influenza effects in vitro and in vivo via neuraminidaseinhibition and immune regulation

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中国药理学与毒理学杂志 2019年第9期33卷 738-739页

作者： ZHANG Tian-bo XIAO Meng-jie Chun-Kwok wong ka-Pun CHRIS MOK ZHAO Xin TI Hui-hui Pang-Chui SHAW State Key Laboratory of Respiratory Disease Guangdong Provincial Key Laboratory of Molecular Target&Clinical PharmacologySchool of Pharmaceutical Sciences and The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina The School of Life Sciences The Chinese University of Hong KongHong KongChina School of Public Health Li Ka Shing Faculty of MedicineThe University of Hong KongHong KongChina

OBJECTIVE Sheng Jiang San(SJS),a multi-herb formulation,is used in treating high fever,thirsty and anxiety in ancient China and it is sometimes used to treat seasonal influenza in ***,there is no evidencebased investigation and mechanism research to support SJS′s anti-influenza *** study aims to investigate the anti-influenza effect of SJS and its possible *** In this study,we examined the inhibitory effect of SJS against different influenza viruses on Madin-Darby canine kidney *** virus infected BALB/c mice were employed as in vivo model to evaluate the *** challenged with A/PR/8/34(H1N1)were orally administrated SJS 1 g·kg^-1 daily for seven days and monitored for 14 *** survival rate,body mass changes,lung index,lung viral load,histopathologic changes and immune-regulation of the mice were *** underlying anti-influenza virus mechanisms were studied by a series of biological assays in vitro to determine if hemagglutinin,ribonucleoprotein complex or nerauminidase were targets of *** SJS exerted a broad spectrum of inhibitory effects on multiple influenza strains in a dose-dependent *** IC50 of SJS against A/WSN/33(H1N1)was lower than 35 mg·L^-*** also protected 50%of mice from influenza virus PR8 *** lung index and the lung viral load of SJS treated mice were signifi⁃cantly decrease compared with untreated *** 2 g·L^-1 inhibited 80%of neuraminidase enzymatic *** also up-regulated TNF-αand IFN-αand down-regulated IL-2 of influenza virus induced *** SJS is a useful formulation for treating influenza virus infection.

关键词： Sheng Jiang San anti-influenza activity neuraminidase inhibition immuno-regulation

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Does Minimizing Ventricular Pacing Reduce the Incidence of Atrial Fibrillation ? A Systematic Review and Meta-analysis of Randomized Controlled Trials

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Cardiovascular Innovations and Applications 2020年第3期5卷 1-7页

作者： Ishan Lakhani Mengqi Gong Cheuk Wai wong George Bazoukis Konstantinos PLetsas Guangping Li Khalid bin Wahleed Yunlong Xia Adrian Baranchuk Gary Tse Keith Sai kit Leung Tong Liu Dong Chang Laboratory of Cardiovascular Physiology Li Ka Shing Institute of Health SciencesHong Kong Special Administrative RegionPeople’s Republic of China Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease Department of CardiologyTianjin Institute of CardiologySecond Hospital of Tianjin Medical UniversityTianjin 300211People’s Republic of China Li ka Shing Faculty of Medicine The University of Hong KongHong KongSpecial Administrative RegionPeople’s Republic of China Second Department of Cardiology Laboratory of Cardiac ElectrophysiologyEvangelismos General Hospital of AthensAthensGreece Department of Cardiology First Affi liated Hospital of Dalian Medical UniversityDalianChina Division of Cardiology Kingston General HospitalQueen’s UniversityKingstonOntarioCanada Xiamen Cardiovascular Hospital Xiamen UniversityXiamenFujianPeople’s Republic of China Aston Medical School Aston UniversityBirminghamUnited Kingdom

Background:Right ventricular pacing disrupts atrioventricular synchrony and increases the risk of atrial fi brillation(AF).However,whether algorithms for minimizing ventricular pacing reduce the incidence of AF remains ***,we conducted a systematic review and meta-analysis to compare the incidence of AF between minimizing ventricular pacing and conventional pacing protocols in patients with pacemakers ***:The PubMed,Embase,and Cochrane Library databases were searched up to August 1,2017,for randomized controlled trials that reported the incidence of AF in patients with and without the use of algorithms for minimizing ventricular ***:Eleven studies comprising 5705 participants(61%males,mean age 71 years[standard deviation 11 years])were fi nally included in the *** mean follow-up duration was 24 *** of algorithms for minimizing ventricular pacing signifi cantly reduced the incidence of AF,with an odds ratio of 0.74(95%confi dence interval 0.55–1.00;P<0.05).There was moderate heterogeneity among studies(I 2=63%).Conclusions:The incidence of AF was reduced by 26%with use of algorithms for minimizing ventricular *** incorporation of such algorithms in routine clinical practice should in theory lead to a decrease in AF-related morbidity and mortality.

关键词： Atrial fibrillation minimizing ventricular pacing pacemaker

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Early-onset primary torsional dystonia in a 4-generation Chinese family with a mutation in the DYT1 gene

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Chinese Medical Journal 2005年第10期118卷 873-876页

作者： YEUNG Wai Lan LAM Ching Wan CHENG Wai Tsoi SIN Ngai Chuen wong Wing Kin wong Chun Nei TSE ka Ming FOK Tai Fai Departments of Paediatrics Prince of Wales HospitalThe Chinese University of Hong KongHong KongChina Chemical Patholog Prince of Wales HospitalThe Chinese University of Hong KongHong KongChina Department of Paediatrics and Adolescent Medicine Queen Mary HospitalUniversity of Hong Kong Nuclear Medicine&PET Division Scanning DepartmentSt.Teresa’s HospitalHong KongChina

Primary torsion dystonia(PTD)is a clinically and genetically heterogeneous movement *** least thirteen different types of dystonia can be distinguished on a genetic basis.~1 The DYT1 gene was first mapped by Ozelius et al in 1989.~2(Kramer et)al^3 linked the same locus to PTD in 12 Ashkenazi Jewish families in *** patients with early-onset generalized PTD were caused by the same three base pair(GAG)deletion in the DYT1 gene on chromosome 9q34.^(1,4,5)The product of the gene is a protein called torsinA.~5(Although the)function of this protein is as yet uncertain,it is widely distributed throughout the brain with high levels in the substantia nigra compacta dopamine neurones.

关键词： DYT1 gene dystonia positron emission tomography

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Role of C11-FDG dual-tracer PET-CT scan in metastatic screening of hepatocellular carcinoma-a cost-effectiveness analysis

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Hepatobiliary Surgery and Nutrition 2021年第3期10卷 301-307页

作者： Kevin K.W.Chu Albert C.Y.Chan ka Wing Ma wong Hoi She Wing Chiu Dai Kenneth S.H.Chok Tan To Cheung Chung Mau Lo Department of Surgery The University of Hong KongHong KongChina

Background:We aimed to identify predictive factors for positron emission tomography(PET)-detected hepatocellular carcinoma(HCC)metastasis and a cost-effective approach to preoperative PET-computed tomography(CT)for detecting ***:Clinicopathological and survival data of HCC patients having PET-CT with 18F-fludeoxyglucose(FDG)and 11C-acetate(ACT)following contrast-enhanced CT/magnetic resonance imaging(MRI)for preoperative tumor staging were *** logistic regression was performed to identify predictive factors for PET-detected metastasis.A cost-benefit analysis model was built for the incurred costs and the impact of PET-CT findings on treatment strategy was ***:Totally 152 patients were ***-tracer PET-CT detected metastasis in 17 patients(11%).By multivariate analysis,alpha-fetoprotein(AFP)≥400 ng/mL[relative risk(RR):4.30,95%confidence interval(CI):1.41-13.15,P=0.011]and bilobar disease(RR:3.94,95%CI:1.24-12.52,P=0.014)were independent predictive factors for PET-detected ***-CT findings altered the treatment strategy for 12 patients(7.9%);three partial hepatectomies,eight episodes of transarterial chemoembolization(TACE)and one episode of ablation were avoided,with an estimated cost-saving of US$91,000,$150,000 and$10,600 *** the PET-CT been performed only for patients with AFP≥400 ng/mL or bilobar disease(n=74),metastasis would have been confirmed in 14 patients(18.9%),and the cost-saving per patient was estimated at US$1,***:Dual-tracer PET-CT is cost-effective and useful for preoperative HCC staging in patients with AFP≥400 ng/mL or bilobar *** routine use in preoperative workup for all HCC patients is not *** disease with AFP<400 ng/mL can achieve good negative predictive value for PET-detected *** patients with either factor can avoid unnecessary procedures and is thus cost-effective for preoperative HCC workup.

关键词： Cost-effectiveness study dual-tracer positron emission tomography-computed tomography(dual-tracer PET-CT) hepatocellular carcinoma(HCC) metastatic screening preoperative investigation

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Virtual reality based multiple life skill training for intellectual disability:A multicenter randomized controlled trial

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Engineered Regeneration 2022年第2期3卷 121-130页

作者： James Chung-Wai Cheung Ming Ni Andy Yiu-Chau Tam Tim Tin-Chun Chan Alyssa ka-Yan Cheung Ocean Yu-Hong Tsang Chi-Bun Yip Wing-kai Lam Duo Wai-Chi wong Department of Biomedical Engineering Faculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Research Institute for Smart Ageing The Hong Kong Polytechnic UniversityHong Kong 999077China Jockey Club Smart Ageing Hub Department of Biomedical EngineeringFaculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Department of Orthopaedics Pudong New Area People’s Hospital Affiliated to Shanghai Jiaotong UniversityShanghai 201299China Social Service Department Yan Chai HospitalHong Kong 999077China C2 Innovations and Research Limited Hong Kong 999077China Department of Kinesiology Shenyang Sport UniversityShenyang 110102China Sports Information and External Affairs Centre Hong Kong Sports InstituteHong Kong 999077China

Life skill-based training is essential for intellectual disabled individuals to regain autonomy and social *** reality(VR)could deliver a nascent application that is more engaging and *** objective of this study was to evaluate the training effects of the VR-based multiple life skill training program on life skill perfor-mance,self-efficacy,memory,cognitive and behavioral functions via a multicenter randomized controlled trial.A total of 145 intellectual disabled participants were recruited for a randomized controlled trial with three in-tervention arms:VR(n=42);traditional(n=53);and control(n=50).The life skill tasks for the interventions included 1)grocery shopping,2)cooking,and 3)kitchen *** measures were performance scores for the three tasks,self-efficacy scale,digit span score,and Frontal Assessment Battery score,graded by blinded ***-after effects of each group were evaluated using separated Wilcoxon Signed-rank *** sig-nificantly improved cooking,cleaning performance,and memory span,while traditional training significantly improved shopping,cooking,and cleaning *** generalized estimating equation evaluated effects between groups adjusted for age,gender and intelligence quotient(IQ).VR had significantly larger improvement effects in cooking and cleaning than the control group and memory span compared to traditional training and controls *** appeared to be a significant confounder on the training *** work may consider developing artificial intelligence to customize programs depending on IQ level.

关键词： Mental retardation Intellectual development X-reality Immersive rehabilitation Metaverse

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Transurethral resection of prostate for acute urinary retention is linked to shorter survival in younger men

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Asian Journal of Andrology 2019年第5期21卷 468-472页

作者： Jeremy Yuen-Chun Teoh Chi-Kwok Chan Maggie Haitian Wang Chi-Ho Leung Eddie Shu-Yin Chan Peter ka-Fung Chiu Chi-Hang Yee Hon-Ming wong Simon See-Ming Hou Chi-Fai Ng S.H.Ho Urology Centre Department of SurgeryPrince of Wales HospitalThe Chinese University of Hong KongHong KongChina Division of Biostatistics JC School of Public Health and Primary CareThe Chinese University of Hong KongHong KongChina Division of Urology Department of SurgeryNorth District HospitalHong KongChina Division of Urology Department of SurgeryAlice Ho Miu Ling Nethersole HospitalHong KongChina

It is largely unknown whether lower urinary tract symptoms(LUTS)or acute retention of urine(AROU)is linked to shorter life expectancy in *** conducted a multicenter,retrospective database analysis of patients undergoing transurethral resection of prostate(TURP)to study their *** Cox regression analysis and kaplan-Meier analysis with stratification to age and indication of TURP were *** further performed an age-and sex-matched survival analysis with the general population using data from the Census and Statistics Department of the Hong Kong Special Administrative Region(Hong Kong,China).From January 2002 to December 2012,3496 patients undergoing TURP were included in our study,with 1764 patients in the LUTS group and 1732 patients in the AROU *** age,ischemic heart disease,cerebrovascular accident,and AROU were risk factors of *** aged80 *** to the general population,younger patients in the LUTS group appeared to have better survival(80 years,survival was similar with the general population in both the LUTS and AROU *** conclusion,AROU at young age was associated with mortality,while early detection and management of LUTS may improve survival.

关键词： acute retention of urine lower urinary tract symptoms mortality transurethral resection of prostate

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