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https://www.readbyqxmd.com/read/29108335/a-three-gene-immunohistochemical-panel-serves-as-an-adjunct-to-clinical-staging-of-patients-with-head-and-neck-cancer
#1
Chin-Ann J Ong, Nicholas B Shannon, Stefan Mueller, Sze Min Lek, Xuan Qiu, Fui Teen Chong, Ke Li, Kelvin K N Koh, Gerald C A Tay, Thakshayeni Skanthakumar, Jacqueline S G Hwang, Tony Kiat Hon Lim, Mei Kim Ang, Daniel S W Tan, Ngian-Chye Tan, Hiang Khoon Tan, Khee Chee Soo, N Gopalakrishna Iyer
Background: Current management of head and neck squamous cell carcinoma (HNSCC) depends on tumor staging. Despite refinements in clinical staging algorithms, outcomes remain unchanged for the last two decades. In this study, we set out to identify a small, clinically applicable molecular panel to aid prognostication of patients with HNSCC. Materials and Methods: Data from The Cancer Genome Atlas (TCGA) was used to derive copy number aberrations and expression changes to identify putative prognostic genes...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29107131/the-impact-of-stress-urinary-incontinence-on-individual-components-of-quality-of-life-in-malaysian-women
#2
Renly Lim, Men Long Liong, Wing Seng Leong, Yong Khee Lau, Nurzalina Abdul Karim Khan, Kah Hay Yuen
OBJECTIVE: To assess the impact of stress urinary incontinence (SUI) on individual components of quality of life (QoL) using both condition-specific and generic questionnaires, and to compare the results of the two instruments with a control group. METHODS: Women with or without SUI aged ≥21 years old were recruited. Subjects completed the International Consultation of Incontinence-Urinary Incontinence Short Form (ICIQ-UI-SF), International Consultation of Incontinence-Lower Urinary Tract Symptoms Quality of Life (ICIQ-LUTSqol) and EQ-5D questionnaires...
October 26, 2017: Urology
https://www.readbyqxmd.com/read/29102976/giant-phaeochromocytoma-presenting-with-an-acute-stroke-reappraising-phaeochromocytoma-surveillance-for-the-neurofibromatosis-type-1-phakomatosis
#3
Yingshan Lee, Leon Yuan Rui Tan, Yong Howe Ho, Melvin Khee Shing Leow
Neurofibromatosis type 1 (NF1) is a multisystem genetic disorder associated with reduced lifespan attributed largely to malignancy and vascular causes. One of the tumours associated with NF1 is phaeochromocytoma. The phaeochromocytoma has earned the moniker, a 'great mimicker', due to its varied means of presentation. We present a patient with NF1 who was diagnosed with a giant 20 cm phaeochromocytoma after suffering from an ischaemic stroke. Current guidelines do not advocate surveillance of phaeochromocytoma in asymptomatic patients with NF1, unlike other genetic syndromes associated with phaeochromocytoma...
November 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29089020/transcriptomic-study-of-salmonella-enterica-subspecies-enterica-serovar-typhi-biofilm
#4
Khee Chian Jason Chin, Todd Duane Taylor, Maxime Hebrard, Kogaan Anbalagan, Marjan Ganjali Dashti, Kia Kien Phua
BACKGROUND: Typhoid fever is an acute systemic infection of humans caused by Salmonella enterica subspecies enterica serovar Typhi (S. Typhi). In chronic carriers, the bacteria survive the harsh environment of the gallbladder by producing biofilm. The phenotype of S. Typhi biofilm cells is significantly different from the free-swimming planktonic cells, and studies have shown that they are associated with antibiotic resistance, immune system evasion, and bacterial persistence. However, the mechanism of this transition and the events leading to biofilm formation are unknown...
October 31, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29052960/treatment-and-outcomes-of-melanoma-in-asia-results-from-the-national-cancer-centre-singapore
#5
Yi Lin Teh, Wei Lin Goh, Sze Huey Tan, Grace Yong, Alisa Noor Hidayah Sairi, Khee Chee Soo, Johnny Ong, Claramae Chia, Grace Tan, Henry Soeharno, Mann Hong Tan, Michelle Chan, Selvarajan Sathiyamoorthy, Kesavan Sittampalam, Jonathan Teh, Francis Chin, Vijay Sethi, Melissa Teo, Richard Quek, Mohamad Farid
BACKGROUND: Acral melanoma (AM) and mucosal melanoma (MM) make up more than half of melanomas in Asia but comprise only 5% of cases in Caucasians, where cutaneous melanoma (CM) predominates. AM and MM are thought to be genetically and biologically distinct from CM. We report the characteristics and outcomes of melanoma patients from the National Cancer Centre Singapore. METHODS: Case records of 210 patients treated between 2002 and 2014 were reviewed. RESULTS: Median follow-up was 2...
October 20, 2017: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29041627/71-mbit-s-ultraviolet-b-led-communication-link-based-on-8-qam-ofdm-modulation
#6
Xiaobin Sun, Zhenyu Zhang, Anas Chaaban, Tien Khee Ng, Chao Shen, Rui Chen, Jianchang Yan, Haiding Sun, Xiaohang Li, Junxi Wang, Jinmin Li, Mohamed-Slim Alouini, Boon S Ooi
A demonstration of ultraviolet-B (UVB) communication link is implemented utilizing quadrature amplitude modulation (QAM) orthogonal frequency-division multiplexing (OFDM). The demonstration is based on a 294-nm UVB-light-emitting-diode (UVB-LED) with a full-width at half-maximum (FWHM) of 9 nm and light output power of 190 μW, at 7 V, with a special silica gel lens on top of it. A -3-dB bandwidth of 29 MHz was measured and a high-speed near-solar-blind communication link with a data rate of 71 Mbit/s was achieved using 8-QAM-OFDM at perfect alignment...
September 18, 2017: Optics Express
https://www.readbyqxmd.com/read/28989211/high-resolution-free-triiodothyronine-thyrotropin-ft3-tsh-responses-to-a-single-oral-dose-of-liothyronine-in-humans-evidence-of-distinct-inter-individual-differences-unraveled-using-an-electrical-network-model
#7
Simon L Goede, Keith R Latham, Melvin Khee-Shing Leow, Jacqueline Jonklaas
The effects of a single oral dose of liothyronine (L-T3) on thyroid stimulating hormone (TSH) and other related thyroid system parameters are partly understood despite therapeutic use of this hormone over many decades. We characterize individualized responses of the hypothalamus-pituitary-thyroid (HPT) axis and its related temporal hormonal profile using an electrical network model. Based on thyroid hormone responses from blood samples using a single 50 μg oral dose of liothyronine in healthy persons with a normal operating euthyroid feedback HPT system, we derived an equivalent electrical circuit model for the system's responses...
March 2017: Journal of Biological Systems
https://www.readbyqxmd.com/read/28978237/exploring-the-trend-in-referrals-for-consideration-of-crs-and-hipec-to-understand-the-attitudes-of-clinicians-in-the-development-of-a-national-cancer-centre-programme-in-peritoneal-disease
#8
Weining Wang, Grace Hwei Ching Tan, Thakshayeni Skanthakumar, Claramae Shulyn Chia, Khee Chee Soo, Melissa Ching Ching Teo
INTRODUCTION: Cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) improve survival in selected patients with peritoneal metastases. However, only some patients who are potentially eligible for the procedure are considered and referred to the appropriate surgical department. By studying the trends of patients being considered for CRS and HIPEC in our centre, we hope to better understand the demographics of our patient cohort and the attitudes of physicians involved towards CRS and HIPEC...
October 30, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28970281/rna-binding-protein-ybx2-regulates-rna-stability-during-cold-induced-brown-fat-activation
#9
Dan Xu, Shaohai Xu, Aung Maung Maung Kyaw, Yen Ching Lim, Sook Yoong Chia, Diana Teh Chee Siang, Juan R Alvarez-Dominguez, Peng Chen, Melvin Khee-Shing Leow, Lei Sun
Recent years have seen an upsurge of interest on brown adipose tissue (BAT) to combat the epidemic of obesity and diabetes. How its development and activation are regulated at the post-transcriptional level, however, has yet to be fully understood. RNA binding proteins (RBPs) lie in the center of post-transcriptional regulation. To systemically study the role of RBPs in BAT, we profiled >400 RBPs in different adipose depots and identified Y-box binding protein 2 (Ybx2) as a novel regulator in BAT activation...
September 29, 2017: Diabetes
https://www.readbyqxmd.com/read/28957258/simple-statistical-channel-model-for-weak-temperature-induced-turbulence-in-underwater-wireless-optical-communication-systems
#10
Hassan Makine Oubei, Emna Zedini, Rami T ElAfandy, Abla Kammoun, Mohamed Abdallah, Tien Khee Ng, Mounir Hamdi, Mohamed-Slim Alouini, Boon S Ooi
In this Letter, we use laser beam intensity fluctuation measurements to model and describe the statistical properties of weak temperature-induced turbulence in underwater wireless optical communication (UWOC) channels. UWOC channels with temperature gradients are modeled by the generalized gamma distribution (GGD) with an excellent goodness of fit to the measured data under all channel conditions. Meanwhile, thermally uniform channels are perfectly described by the simple gamma distribution which is a special case of GGD...
July 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28917257/exploiting-molecular-genomics-in-precision-radiation-oncology-a-marriage-of-biological-and-physical-precision
#11
Janice S H Tan, Xiaotian Lin, Kevin L M Chua, Paula Y Lam, Khee-Chee Soo, Melvin L K Chua
Achieving local tumour control is paramount for cure in head and neck and prostate cancers. With the transition to precision radiotherapy (RT) techniques, survival rates have improved in the majority of these cancers, but a substantial proportion of 30-40% still relapse following primary treatment. Recent large-scale molecular profiling studies have revealed unique biological events that could explain for tumour aggression and resistance to therapies, redefining the molecular taxonomy of head and neck and prostate cancers...
September 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28914916/continuous-wave-optically-pumped-green-perovskite-vertical-cavity-surface-emitter
#12
Mohd Sharizal Alias, Zhixiong Liu, Abdullah Al-Atawi, Tien Khee Ng, Tom Wu, Boon S Ooi
We report an optically pumped green perovskite vertical-cavity surface-emitter operating in continuous-wave (CW) with a power density threshold of ∼89  kW/cm(2). The device has an active region of CH3NH3PbBr3 embedded in a dielectric microcavity; this feat was achieved with a combination of optimal spectral alignment of the optical cavity modes with the perovskite optical gain, an adequate Q-factor of the microcavity, adequate thermal stability, and improved material quality with a smooth, passivated, and annealed thin active layer...
September 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28905701/outcomes-of-patients-with-severe-influenza-infection-admitted-to-intensive-care-units-a-retrospective-study-in-a-medical-centre
#13
Chien-Ming Chao, Chih-Cheng Lai, Khee-Siang Chan, Kuo-Chen Cheng, Willy Chou, Kuo-Shu Yuan, Chin-Ming Chen
PURPOSE: This study assessed clinical manifestations and prognostic factors of critically ill patients with severe influenza admitted to the intensive care unit (ICU) in Taiwan's recent outbreak. METHODOLOGY: Patients admitted to ICU for severe influenza between January 1, 2015, and March 31, 2016, were identified and their medical records were retrospectively reviewed. The primary endpoints were outcomes and predictors of in-hospital mortality. RESULTS: There were 125 patients with an average Acute Physiology and Chronic Health Evaluation II (APACHE II) score of 20...
October 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28878254/germline-mutations-in-cancer-predisposition-genes-are-frequent-in-sporadic-sarcomas
#14
Sock Hoai Chan, Weng Khong Lim, Nur Diana Binte Ishak, Shao-Tzu Li, Wei Lin Goh, Gek San Tan, Kiat Hon Lim, Melissa Teo, Cedric Ng Chuan Young, Simeen Malik, Mann Hong Tan, Jonathan Yi Hui Teh, Francis Kuok Choon Chin, Sittampalam Kesavan, Sathiyamoorthy Selvarajan, Patrick Tan, Bin Tean Teh, Khee Chee Soo, Mohamad Farid, Richard Quek, Joanne Ngeow
Associations of sarcoma with inherited cancer syndromes implicate genetic predisposition in sarcoma development. However, due to the apparently sporadic nature of sarcomas, little attention has been paid to the role genetic susceptibility in sporadic sarcoma. To address this, we performed targeted-genomic sequencing to investigate the prevalence of germline mutations in known cancer-associated genes within an Asian cohort of sporadic sarcoma patients younger than 50 years old. We observed 13.6% (n = 9) amongst 66 patients harbour at least one predicted pathogenic germline mutation in 10 cancer-associated genes including ATM, BRCA2, ERCC4, FANCC, FANCE, FANCI, MSH6, POLE, SDHA and TP53...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28869164/the-output-factor-correction-as-function-of-the-photon-beam-field-size-direct-measurement-and-calculation-from-the-lateral-dose-response-functions-of-gas-filled-and-solid-detectors
#15
Daniela Poppinga, Björn Delfs, Jutta Meyners, Dietrich Harder, Björn Poppe, Hui Khee Looe
The first aim of this study has been to extend the systematic experimental study of the field size dependence of the output factor correction for three micro-ionization chambers (PTW 31014, PTW 31022 and IBA Razor chamber), two silicon diodes (PTW 60017 and IBA Razor Diode) and the synthetic diamond detector microDiamond (PTW 60019) in a 6 MV photon beam down to an effective field side length of 2.6mm, and to summarize the present knowledge of this factor by treating it as a function of the dosimetric field size...
August 28, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/28854825/are-positron-emission-tomography-computed-tomography-pet-ct-scans-useful-in-preoperative-assessment-of-patients-with-peritoneal-disease-before-cytoreductive-surgery-crs-and-hyperthermic-intraperitoneal-chemotherapy-hipec
#16
Weining Wang, Grace Hwei Ching Tan, Claramae Shulyn Chia, Thakshayeni Skanthakumar, Khee Chee Soo, Melissa Ching Ching Teo
INTRODUCTION: CRS and HIPEC confer survival benefit in selected patients with peritoneal metatases (PM). Accurate preoperative assessment of disease burden and exclusion of distant metastases are crucial in selecting the appropriate patient. We evaluate the utility of PET-CT scans in comparison with CT and MRI scans in patients considered for CRS and HIPEC. METHODS: Data were retrospectively collected from patients who had been discussed for CRS and HIPEC between January 2011 and December 2015, at our institutional multidisciplinary tumour board...
August 31, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28828593/outcomes-of-pharmacist-provided-medication-review-in-collaborative-care-for-adult-singaporeans-receiving-hemodialysis
#17
Bih Yee Chia, McVin Hua Heng Cheen, Xin Yi Gwee, Melissa Mee Yin Chow, Giat Yeng Khee, Wan Chee Ong, Hui Lin Choong, Paik Shia Lim
Background Patients receiving hemodialysis are predisposed to drug related problems (DRPs). While collaborative care (CC) models with pharmacist involvement can reduce DRP occurrence, few have examined its impact on clinical and economic outcomes. Objective To determine whether a CC model with pharmacist-provided medication review can reduce unplanned admissions and healthcare utilization in patients receiving hemodialysis, compared to usual care (UC). Setting Outpatient nephrology clinic of a tertiary hospital in Singapore...
August 21, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/28819204/prognostic-factors-and-outcomes-of-unplanned-extubation
#18
Chien-Ming Chao, Mei-I Sung, Kuo-Chen Cheng, Chih-Cheng Lai, Khee-Siang Chan, Ai-Chin Cheng, Shu-Chen Hsing, Chin-Ming Chen
This study investigated the prognostic factors and outcomes of unplanned extubation (UE) in patients in a medical center's 6 intensive care units (ICUs) and calculated their mortality risk. We retrospectively reviewed the medical records of all adult patients in Chi Mei Medical Center who underwent UE between 2009 and 2015. During the study period, there were 305 episodes of UE in 295 ICU patients (men: 199 [67.5%]; mean age: 65.7 years; age range: 18-94 years). The mean Acute Physiology and Chronic Health Evaluation (APACHE) II score was 16...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797524/systematic-review-of-metformin-monotherapy-and-dual-therapy-with-sodium-glucose-co-transporter-2-inhibitor-sglt-2-in-treatment-of-type-2-diabetes-mellitus
#19
REVIEW
Nagashekhara Molugulu, Lai Shu Yee, Yew Tze Ye, Tan Chew Khee, Lee Zhen Nie, Neoh Jia Yee, Tian Kar Yee, Tan Chee Liang, Prashant Kesharwani
BACKGROUND: Type 2 Diabetes Mellitus (T2DM) is a chronic disorder and its treatment with only metformin often does not provide optimum glycemic control. Addition of sodium glucose cotransporter 2 inhibitor (SGLT2) will improve the glycemic control in patients on metformin alone. In this study, an attempt is made to investigate the combined therapy of SGLT-2 with metformin in managing T2DM in terms of lowering HbA1c and body weight and monotherapy using metformin alone in HbA1c and body weight reduction...
October 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28742061/test-study-of-boron-nitride-as-a-new-detector-material-for-dosimetry-in-high-energy-photon-beams
#20
D Poppinga, J Halbur, S Lemmer, B Delfs, D Harder, H K Looe, B Poppe
The aim of this test study is to check whether boron nitride (BN) might be applied as a detector material in high-energy photon-beam dosimetry. Boron nitride exists in various crystalline forms. Hexagonal boron nitride (h-BN) possesses high mobility of the electrons and holes as well as a high volume resistivity, so that ionizing radiation in the clinical range of the dose rate can be expected to produce a measurable electrical current at low background current. Due to the low atomic numbers of its constituents, its density (2...
September 5, 2017: Physics in Medicine and Biology
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