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https://www.readbyqxmd.com/read/28917257/exploiting-molecular-genomics-in-precision-radiation-oncology-a-marriage-of-biological-and-physical-precision
#1
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
#2
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
#3
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...
September 14, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28878254/germline-mutations-in-cancer-predisposition-genes-are-frequent-in-sporadic-sarcomas
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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...
July 25, 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
#10
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
https://www.readbyqxmd.com/read/28695617/morbidity-and-mortality-of-elderly-patients-following-cytoreductive-surgery-and-hyperthermic-intraperitoneal-chemotherapy-hipec
#11
Evelyn Y T Wong, Grace H C Tan, Claramae S L Chia, Mrinal Kumar, Khee Chee Soo, Melissa C C Teo
AIM: Cytoreductive surgery (CRS) and Hyperthermic Intraperitoneal Chemotherapy (HIPEC) is known to improve survival in selected patients with peritoneal metastasis. However, there is limited data supporting the role of CRS and HIPEC in elderly patients (≥65 years old). METHODS: A retrospective review of a prospectively maintained database of patients who underwent CRS-HIPEC between April 2001 and July 2015 from a single institution was performed. Patients were divided into two groups non-elderly (<65 years old), and elderly (≥65 years old)...
July 11, 2017: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28689443/does-having-a-gastrectomy-delay-time-to-feeding-and-prolong-hospital-stay-in-patients-undergoing-cytoreductive-surgery-and-hyperthermic-intraperitoneal-chemotherapy
#12
Nicholas Brian Shannon, Grace Hwei Ching Tan, Claramae Shulyn Chia, Khee Chee Soo, Melissa Ching Teo
AIM: Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is routinely used to treat selected patients with peritoneal carcinomatosis, but can be associated with prolonged hospital stay, significant morbidity and mortality. Our objective was to assess whether patients undergoing gastrectomy as part of CRS/HIPEC were at increased risk of delayed feeding time and prolonged hospital stay. METHODS: Two hundred and fourteen consecutive patients with peritoneal carcinomatosis treated with CRS/HIPEC between 2001 and 2016 were stratified by whether CRS included gastrectomy (n = 19, 9%) and compared...
July 26, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28684161/vitamin-e-isoform-%C3%AE-tocotrienol-protects-against-emphysema-in-cigarette-smoke-induced-copd
#13
Hong Yong Peh, W S Daniel Tan, Tze Khee Chan, Chen Wei Pow, Paul S Foster, W S Fred Wong
Inflammation and oxidative stress contribute to emphysema in COPD. Although corticosteroids are the standard of care for COPD, they do not reduce oxidative stress, and a subset of patients is steroid-resistant. Vitamin E isoform γ-tocotrienol possesses both anti-inflammatory and anti-oxidative properties that may protect against emphysema. We aimed to establish the therapeutic potential of γ-tocotrienol in cigarette smoke-induced COPD models in comparison with prednisolone. BALB/c mice were exposed to cigarette smoke for 2 weeks or 2 months...
July 3, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28683587/ca-125-an-inaccurate-surveillance-tool-immediately-after-cytoreductive-surgery-and-hyperthermic-intraoperative-chemotherapy-crs-hipec
#14
Nicholas Brian Shannon, Grace Hwei Ching Tan, Claramae Shulyn Chia, Khee Chee Soo, Melissa Ching Ching Teo
OBJECTIVE: This study seeks to evaluate pre and post-operative CA-125 in patients undergoing complete cytoreduction surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC), and understand the time frame before values normalise allowing use as a surveillance tool to resume. METHODS: A retrospective review was carried out of 94 patients undergoing CRS-HIPEC to compare pre-operative CA-125 values, measured within one week prior to surgery to post-operative readings within the first 30 d...
July 6, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28682859/multidisciplinary-interventions-and-continuous-quality-improvement-to-reduce-unplanned-extubation-in-adult-intensive-care-units-a-15-year-experience
#15
Chien-Ming Chao, Chih-Cheng Lai, Khee-Siang Chan, Kuo-Chen Cheng, Chung-Han Ho, Chin-Ming Chen, Willy Chou
We conduct a retrospective study of patients with unplanned extubation (UE) in adult intensive care units (ICU) at a medical center. In 2001, a multidisciplinary team of intensivists, senior residents, nurses, and respiratory therapists was established at Chi Mei Medical Center. The improvement interventions, implemented between 2001 and 2015, were organized around 8 key areas: standardizing procedures, improving communication skills, revising sedation and weaning protocols, changing strategies for restraints, establishing a task force for identifying and managing high-risk patients, using new quality-improvement models as breakthrough series and team resource management, using the strategy of accountability without assigning blame, and changing a new method to secure endotracheal tube...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28666611/treatment-of-xanthelasma-palpebrarum-with-a-1064-nm-q-switched-nd-yag-laser
#16
Jun Khee Heng, Sze Hon Chua, Chee Leok Goh, Suzanne Cheng, Virlynn Tan, Wee Ping Tan
BACKGROUND: Xanthelasma palpebrarum is the most common cutaneous xanthoma characterized by soft, yellow papules or plaques that arise on the periorbital skin. As these lesions can be cosmetically disfiguring, many patients seek medical help to remove these lesions. OBJECTIVE: To determine the effectiveness and minimum number of treatment sessions with a 1064-nm, Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser for the treatment of xanthelasma. METHODS: A retrospective review of patients with xanthelasma consecutively treated with Q-switched Nd:YAG laser was conducted...
October 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28661785/effect-of-pulsed-magnetic-stimulation-on-sexual-function-in-couples-with-female-stress-urinary-incontinence-partners
#17
Renly Lim, Men Long Liong, Yong Khee Lau, Wing Seng Leong, Nurzalina Abdul Karim Khan, Kah Hay Yuen
We prospectively evaluated the effects of pulsed magnetic stimulation (PMS) on sexual function of couples with stress urinary incontinence (SUI) partners. Female SUI subjects received 16 or 32 biweekly PMS sessions, depending on treatment response. Prior to, immediately after, and at 6-months posttreatment, couples completed the Golombok Rust Inventory of Sexual Satisfaction (GRISS) questionnaire. Fifty-three (80.3%) of 66 couples completed reassessments. Based on the overall GRISS score, there were significant improvements in sexual function in both female subjects (Mdiff -5...
June 29, 2017: Journal of Sex & Marital Therapy
https://www.readbyqxmd.com/read/28647219/higher-mortality-of-severe-influenza-patients-with-probable-aspergillosis-than-those-with-and-without-other-coinfections
#18
Yee-Huang Ku, Khee-Siang Chan, Chun-Chieh Yang, Che-Kim Tan, Yin-Ching Chuang, Wen-Liang Yu
BACKGROUND/PURPOSE: Aspergillus-associated infection might comprise up to 23-29% of severe influenza patients from the community throughout stay in an intensive care unit (ICU). In Taiwan, cases of severe influenza with aspergillosis are increasingly reported. Therefore, we describe the relative risk of mortality among severe influenza patients with aspergillosis and other coinfections compared to severe influenza patients without Aspergillus coinfections. METHODS: We retrospectively reviewed 124 adult patients with severe influenza in a tertiary medical center in southern Taiwan from January 2015 through March 2016...
June 21, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28645105/a-three-gene-immunohistochemical-panel-serves-as-an-adjunct-to-clinical-staging-of-patients-with-head-and-neck-cancer
#19
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...
June 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28633580/platinum-agents-and-mitomycin-c-specific-complications-in-cytoreductive-surgery-crs-and-hyperthermic-intraperitoneal-chemotherapy-hipec
#20
Grace Hwei Ching Tan, Nicholas Brian Shannon, Claramae Shulyn Chia, Khee Chee Soo, Melissa Ching Ching Teo
INTRODUCTION: Cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) have been found to prolong survival in patients with peritoneal disease but is associated with significant morbidity. We evaluate the perioperative complications and the association with the chemotherapy agent used for HIPEC. METHODS: Retrospective analysis of a prospectively collected database of CRS-HIPEC cases between April 2001 and February 2016 was performed. Patients were stratified by the chemotherapy used, and perioperative complications were compared...
July 26, 2017: International Journal of Hyperthermia
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