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Aberrant methylation of Glutathione S-transferase P1 and E-cadherin in invasive ductal breast carcinoma and fibroadenoma

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中华乳腺病杂志（电子版） 2010年第5期4卷 14-19页

作者： wings tjing yung loo Mary Ngan Bing Cheung Louis Wing Cheong Chow UNIMED Medical Institute Organisation for Oncology and Translational Research Hong Kong School of Chinese Medicine The University of Hong Kong Clinical Trial Centre Li Ka Shing Faculty of MedicineThe University of Hong Kong

Objective To investigate the hypermethylation status of glutathione transferase P1(GSTP1)and E-cadherin(ECAD),TSGs(tumor suppressor genes)in our breast cancer samples and explore their correlation with clinicopathological features of corresponding cancer *** One hundred and thirty-six IDC(invasive ductal carcinoma)patients were recruited for analysis and 16 fibroadenoma patients acted as *** extraction and methylation-specific PCR(MSP)were subsequently performed preceded by pathological *** The percentage of hypermethylated GSTP1 in carcinoma and fibroadenoma groups was 34.92% and 15.79% respectively and the percentage of hypermethylated ECAD in carcinomas and fibroadenomas was 18.00% and 0.00% *** had the highest percentage of c-erbB2 overexpression being 54.55% among the clinicopathological *** Hypermethylation patterns are frequent in IDC and seem to relate to c-erbB2 overexpression,and such epigenetic change should not be neglected in *** methylation status in cancer patients can be determined at early stage and it may be a reference for better treatment planning.

关键词：乳腺癌临床治疗疗效

Overview of breast cancer prevention:what's the next?

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中华乳腺病杂志（电子版） 2013年第6期7卷 1-5页

作者： LouisWingCheongChow wingstjingyungloo AdrianYunSanYip Louis Wing Cheong Chow wings tjing yung loo Adrian Yun San Yip Organisation for Oncology and TranslationalResearch Hong Kong UNIMED Medical Institute Comprehensive Centre for Breast Diseases Hong Kong Maeau University of Science and Technology Macao

Breast cancer is the leading cause of death among women at the ages of 20-59 years[1].The incidence of breast cancer in Asia is also shown to be increasing recently,especially in the more affluent cities,and the peak incidence of breast cancer is at the age of 45-50 years[2].Breast cancer prevention has started from secondary prevention strategy of early detection of the disease with different modalities in Asia[3-5]despite the absence of unified nationwide screening *** are a lot

关键词：摘要编辑部编辑工作读者

Expression of cancer stem cell surface markers after chemotherapeutic drug treatment to reflect breast cancer cell regrowth

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中华乳腺病杂志（电子版） 2014年第1期8卷 28-32页

作者： Qing Liu wings tjing yung loo Louis Wing Cheong Chow Kelly Wei Yu Rui UNIMED Medical Institute and Organizationfor Oncology and Translational Research

Objective To detect the cell viability and the expressions of stem cell surface markers after chemotherapeutic drug *** We observed the cytotoxic effects of three chemotherapeutic agents[epirubicin(Epi),fluorouracil(5-FU)and cyclophosphamide(Cyc)]in three cell lines,and the cell viabilities after removed these chemotherapeutic *** of stem cell surface markers CD44,CD24,CD90,CD14 and aldehyde dehydrogenase1(ALDH1)in breast cancer cells were analyzed by real-time *** post hoc analysis(Tukey’s tests)in conjunction with one-way ANOVA was used for statistical *** The initial cytotoxic efficacy was most *** the treatment of the same therapeutic agents,cell viability was decreased by 64.8%35.14%,32.25%in BT-483 cells,66.4%,22.94%and 45.88%in MDA-MB-231 cells,97.1%,99.5%and 76.4%in MCF *** difference was significant compared with that before treatment(P=0.000).However,the inhibitory effects were diminished after chemotherapeutic agent *** viabilities were increased to 167.9%,212.04%and 188.66%in MDA-MB-231 cells at48 h after *** 72 h after withdrawal,cell viability was increased with a significant difference in three cell lines(all P values=0.000).Expressions of CD44 and ALDH1 were most prevalent for MDA-MB-231,BT-483 and MCF-7 ***1 mRNA level was significant higher in BT-483(HER-2 overexpression cell line)than MDA-MB-231(triple negative cell line)(P=0.012).CD14 mRNA level in MCF-7 cells were significantly lower than that in MDA-MB-231 and BT-483(P=0.003,0.001).BT-483 showed significantly higher level of CD44 than MDA-MB-231 and MCF-7 cell line(P=0.013,0.020),and no significant difference was detected between MDA-MB-231 and MCF-7 breast cancer cells(P=0.955).CD90 mRNA expressions were detected in MDA-MB-231 cells and MCF-7 cells,but not in BT-483 *** Some malignant cells could survive in vitro and begin to proliferate again between cycles of chemotherapy.

关键词：乳腺癌细胞活性治疗方法临床分析

Application of biomarkers in sentinel lymph node biopsy for the management of breast cancer

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中华乳腺病杂志（电子版） 2012年第6期6卷 11-15页

作者： Qing Liu wings tjing yung loo Adrian Yun San Yip Louis Wing Cheong Chow Elizabeth Lam Yan Ng Mary Ngan Bing Cheung UNIMED Medical Institute Organization for Oncology and Translational Research

Objective Sentinel lymph node in breast cancer is a predictor of the tumor's metastatic *** emerging from antitumor immune response might also target sentinel lymph node (SLN).In this study,we evaluated the cytokine profile including interleukin-8 (IL-8),interleukin-12 (IL-12),interferon-gamma (IFN-γ),and tumor necrosis factor alpha (TNF-α) for the T-cell *** From January 2008 to August 2010,35 patients with breast mass underwent SLN biopsy in UNIMED Medical *** specimens were formalin-fixed and paraffin-embedded for hematoxylin and eosin staining and immunohistochemistry with following markers:IL-8,IL-12,IFN-γ and TNF-α.The staining intensity was scored according to four grades:negative (-),weak expression (+),moderately positive expression (+ +),strong positive expression (+ + +).The correlation between the expression of cytokines and pathological characteristics were also analyzed using the Spearman Rank Correlation *** Out of 35 patients,SLN metastases were observed in 20 patients and among them,75% (15 /20) were strongly stained (+ + +) with IL-8 and moderately stained (+ +) with IL-12,but only 25% (5 /20) were strongly stained (+ + +) with IFN-γ and TNF-α.The expression of IL-8 was significantly associated with all tumor grades (r=0.639,P=0.00),estrogen receptor (r=0.778,P=0.01),progesterone receptor (r=0.759 P=0.00) and HER-2 /neu receptor (r=0.863 P=0.00).Conclusion The strong association between IL-8 expression and SLN metastases might highlight the prognostic significance of IL-8 in SLN.

关键词：临床治疗乳腺疾病医学

Effect of Tai Chi Chuan on serotonin and cortisol for monitoring stress and quality of life in post-treatment breast cancer patients

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中华乳腺病杂志（电子版） 2014年第4期8卷 34-40页

作者： William Wai Nam Tsang wings tjing yung loo Louis Wing Cheong Chow Elizabeth Lam Yan Ng Adrian Yun San Yip Jianping Chen Department of Rehabilitation Sciences Hong Kong Polytechnic University UNIMED Medical Institute and Organisation for Oncology and Translational Research School of Chinese Medicine Li Ka Shing Faculty of MedicineUniversity of Hong Kong

Objective Immediate physical exercise has been recommended for patients in the recovery phase to improve survival and quality of life(QOL)and reduce recurrence of *** new NCCN Guidelines for Survivorship also highlighted the role of exercise in post-cancer health,encouraging patients to perform light physical activity following *** aim of our study is to effect of Tai Chi Chuan(TCC)on serotonin and cortisol for monitoring stress and QOL in post-treatment breast cancer *** Totally85 post-treatment breast cancer patients were enrolled in this study to observe the effects of practicing TCC on recovery,as well as stress and happiness which are indicators of QOL of in *** blood was drawn from study subjects to analyze the levels of serotonin,cortisol and high sensitive C-reactive protein(HSCRP)at baseline,and at 3,6 and 12 months of TCC *** was drawn from healthy subjects only at baseline.A QOL questionnaire was administered to study subjects at three time points throughout the study,and once for healthy *** data were processed by analysis of variance of repeated *** At 3,6 and 12 months time points following regular TCC exercise,WBC,RBC,hemoglobin in blood samples showed a statistically significant difference(F=161.55,172.14,289.73;all P=0.00);the level of serotonin(biomarker for well-being),cortisol(indicator of stress)and HS-CRP(biomarker for inflammation)showed a statistical improvement(F=307.46,182.85,102.23;all P=0.00).After 3,6 and 12 months of regular TCC exercise,according to the results of QOL questionnaire,the indicators including quality of sleep,perceived hunger,fatigue,contentment,stress and social interaction presented a significant difference(F=312.98,222.64,543.90,46.05,28.10,78.92,all P<0.05),while there was no statistical difference in life dissatisfaction(F=56.61,P=0.166)Conclusions TCC physical activity for post-treatment breast cancer patients improved QOL and overall

关键词：乳腺病患者临床分析治疗方法

Incidence of urinary incontinence following endoscopic laser enucleation of the prostate by en-bloc and non-en-bloc techniques:a multicenter,real-world experience of 5068 patients

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Asian Journal of Andrology 2024年第3期26卷 233-238页

作者： Daniele Castellani Vineet Gauhar Khi yung Fong Mario Sofer Moisés Rodríguez Socarrás Azimdjon N Tursunkulov Lie Kwok Ying Sarvajit Biligere Ho Yee Tiong Dean Elterman Abhay Mahajan Mark Taratkin Sorokin Nikolai Ivanovich Tanuj Pal Bhatia Dmitry Enikeev Nariman Gadzhiev Mohammed Taif Bendigeri Jeremy Yuen-Chun Teoh Marco Dellabella Fernando Gómez Sancha Bhaskar Kumar Somani Thomas Reinhard William Herrmann Urology Unit IRCCS INRCAAncona 60127Italy Urology Unit Marche University HospitalLe Marche Polytechnic UniversityAncona 60126Italy Department of Urology Ng Teng Fong General HospitalSingapore 609606Singapore Yong loo Lin School of Medicine National University of SingaporeSingapore 117597Singapore Department of Urology Tel Aviv Sourasky Medical CenterAffiliated to the Sackler School of MedicineTel Aviv UniversityTel Aviv 6423906Israel Department of Urology and Robotic Surgery ICUA-Clínica CEMTROMadrid 28701Spain Urology Division Akfa Medline HospitalTashkent 100211Uzbekistan Advanced Urology Gleneagles HospitalSingapore 258499Singapore Department of Urology National University HospitalSingapore 119228Singapore Divisionof Urology Department of SurgeryUniversity of TorontoOntarioToronto M5G 2C4Canada Department of Urology Mahatma Gandhi Mission’s Medical College and HospitalAurangabad 431003India Institute for Urology and Reproductive Health Sechenov UniversityMoscow119435Russian Federation Department of Urologyand Andrology Lomonosov Moscow State UniversityMoscow 119992Russian Federation Department of Urology Sarvodaya Hospital and Research CentreFaridabadHaryana 121006India Department of Urology Medical University of ViennaVienna 1090Austria Department of Urology Saint-Petersburg State University HospitalSaint-Petersburg 199034Russian Federation Department of Urology Asian Institute of Nephrology and UrologyHyderabad 500082India S.H.Ho UrologyCentre Department of SurgeryFaculty of MedicineThe Chinese University of Hong KongHong Kong 96H2+Q9China Department of Urology University Hospitals Southampton NHS TrustSouthampton SO166YDUnited Kingdom Department of Urology Cantonal Hospital Thurgau AGFraunfeld 8500Switzerland

We aim to evaluate the incidence of incontinence following laser endoscopic enucleation of the prostate(EEP)comparing en-bloc(Group 1)versus 2-lobe/3-lobe techniques(Group 2).We performed a retrospective review of patients undergoing EEP for benign prostaticenlargement in 12 centers between January 2020 and January *** were presented as median and interquartile range(IQR).Univariable and multivariable logistic regression analysis was performed to evaluate factors associated with stress urinary incontinence(SUI)and mixed urinary incontinence(MUI).There were 1711 patients in Group 1 and 3357 patients in Group *** in Group 2were significantly younger(68[62–73]years vs 69[63–74]years,P=0.002).Median(interquartile range)prostate volume(PV)wassimilar between the groups(70[52–92]ml in Group 1 vs 70[54–90]ml in Group 2,P=0.774).There was no difference in preoperativeInternational Prostate Symptom Score,quality of life,or maximum flow ***,morcellation,and total surgical time weresignificantly shorter in Group *** 1 month,overall incontinence rate was 6.3%in Group 1 versus 5.3%in Group 2(P=0.12),and urge incontinence was significantly higher in Group 1(55.1%vs 37.3%in Group 2,P<0.001).After 3 months,the overall rate ofincontinence was 1.7%in Group 1 versus 2.3%in Group 2(P=0.06),and SUI was significantly higher in Group 2(55.6%vs 24.1%in Group 1,P=0.002).At multivariable analysis,PV and IPSS were factors significantly associated with higher odds of transient SUI/***,surgical time,and no early apical release technique were factors associated with higher odds of persistent SUI/MUI.

关键词： benign prostatic hyperplasia en-bloc enucleation endoscopic enucleation of the prostate laser therapy stress urinaryincontinence urge urinary incontinence

Prospective validation of %p2PSA and the Prostate Health Index, in prostate cancer detection in initial prostate biopsies of Asian men, with total PSA 4-10 ng ml-1

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Asian Journal of Andrology 2017年第3期19卷 286-290页

作者： Lincoln GL Tan yung Khan Tan Bee Choo Tai Karen ML Tan Vineet Gauhar Ho Yee Tiong Robert CW Hawkins Thomas P Thamboo Felicia SK Hong Edmund Chiong Department of Urology National University Hospital National University Health System Singapore Department of Urology Tan Tock Seng Hospital Singapore Saw Swee Hock School of Public Health National University of Singapore Singapore Department of Laboratory Medicine National University Hospital Singapore Department of Urology Alexandra Hospital Jurong Health Singapore Department of Laboratory Medicine Tan Teck Seng Hospital Singapore Department of Pathology National University Hospital Singapore.

Despite its widespread use for prostate cancer screening, low specificity makes PSA a suboptimal biomarker, especially in the diagnostic ＂gray zone＂ of 4-10 ng ml-1, False-positives lead to unnecessary biopsies with attendant morbidities. This is the first prospective validation study of %p2PSA and the Prostate Health Index （PHI） in Asian men presenting with a total PSA between 4.0 and 10 ng m1-1. We studied 157 Asian men between 50 and 75 years old, with normal per rectal prostate examinations, undergoing their first prostate biopsy, using a standardized biopsy protocol, for PSA levels of 4-10 ng ml-1, Thirty （19.1%） were found to have prostate cancer on biopsy. Statistically significant differences between patients with and without prostate cancer were found for total PSA, p2PSA, %p2PSA, and PHh The areas under the curve of the receiver operating characteristic curve for total PSA, %fPSA, %p2PSA, and PHI were 0.479, 0.420, 0.695, and 0.794, respectively. PHI predicts prostatic biopsies results best. At a sensitivity of 90%, the specificity （95% CI） of PHI was 58.3%, more than triple the specificity of total PSA at 17.3%, potentially avoiding 77 （49%） unnecessary biopsies. Similar to studies in mainly Caucasian populations, we have prospectively shown that %p2PSA and PHI greatly outperform total and free to total PSA ratio, in the detection of prostate cancer at first biopsy. Higher PHi levels also correspond to increasing the risk of detecting GS ≥7 cancers. We have validated the use of PHI to aid decision-making regarding prostate biopsies in Asian men with serum PSA between 4 and 10 ng *** its widespread use for prostate cancer screening, low specificity makes PSA a suboptimal biomarker, especially in the diagnostic ＂gray zone＂ of 4-10 ng m1-1, False-positives lead to unnecessary biopsies with attendant morbidities. This is the first prospective validation study of %p2PSA and the Prostate Health Index （PHI） in Asian men presenting with a total PSA betwe

关键词： biological markers prostate specific antigen prostatic neoplasms

Distinctive serotypes of SARS-related coronaviruses defined by convalescent sera from unvaccinated individuals

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hLife 2023年第1期1卷 26-34页

作者： Chee Wah Tan Feng Zhu Wan Ni Chia #Barnaby EYoung Aileen Ying Yan Yeoh Thomas Althaus Chee Fu yung Wee Chee Yap Beng Lee Lim Mark I-C Chen Jinyan Zhang Yun Yan Mah Eric Voiglio Alex Sigal Jianxin Huo Shengli Xu Yee Joo Tan Kong-Peng Lam David Lye Lin-Fa Wang Programme in Emerging Infectious Diseases Duke-NUS Medical SchoolSingapore National Center of Infectious Diseases Singapore Tan Tock Seng Hospital Singapore Lee Kong Chian School of Medicine Nanyang Technology UniversitySingapore Centre Scientifique de Monaco Monaco Direction de I’Action Sanitaire de Monaco Monaco Infectious Disease Service Department of PediatricsKK Women’s and Children’s HospitalSingapore Duke-NUS Medical School Singapore African Health Research Institute DurbanSouth Africa Singapore Immunology Network Agency for ScienceTechnology and ResearchSingapore Department of Physiology Yong Loo Lin School of MedicineNational University of SingaporeSingapore Department of Microbiology and Immunology Yong Loo Lin School of MedicineNational University of SingaporeSingapore Infectious Diseases Translational Research Programme National University of SingaporeSingapore 14School of Biological SciencesNanyang Technological UniversitySingapore Singhealth Duke-NUS Global Health Institute Singapore

Multiple Omicron sub-lineages have emerged,with Omicron XBB and XBB.1.5 subvariants becoming the dominant variants globally at the time of this *** key feature of new variants is their ability to escape humoral immunity despite the fact that there are limited genetic changes from their preceding *** raises the question of whether Omicron should be regarded as a separate serotype from viruses serologically clustered with the ancestral severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)***,we present cross-neutralization data based on a pseudovirus neutralization test using convalescent sera from naïve individuals who had recovered from primary infection by SARS-CoV-1 and SARS-CoV-2 strains/variants including the ancestral virus and variants Beta,Delta,Omicron BA.1,Omicron BA.2 and Omicron *** results revealed no significant cross-neutralization in any of the three-way testing for SARS-CoV-1,ancestral SARS-CoV-2 and SARS-CoV-2 Omicron *** data argue for the assignment of three distinct serotypes for the currently known human-infecting SARS-related coronaviruses.

关键词： SARS-CoV-2 SARS-CoV-1 serotype Omicron primary infection convalescent sera