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Kinyui Alice Lo, Shiqi Huang, Arcinas Camille Esther Walet, Zhi-Chun Zhang, Melvin Khee-Shing Leow, Meihui Liu, Lei Sun
Obesity induces profound transcriptome changes in adipocytes; recent evidence suggests that lncRNAs play key roles in this process. Here, we performed a comprehensive transcriptome study by RNA-Seq in adipocytes isolated from interscapular brown, inguinal and epididymal white adipose tissues in diet-induced obese mice. Our analysis reveals a set of obesity-dysregulated lncRNAs, many of which exhibit dynamic changes in fed vs. fasted state, potentially serving as novel molecular markers reflecting adipose energy status...
March 8, 2018: Diabetes
Hui Khee Looe, Bjoern Delfs, Daniela Poppinga, Dietrich Harder, Bjoern Poppe
This study aims at developing an optimization strategy for photon-beam dosimetry in magnetic fields using ionization chambers. Similar to the familiar case in absence of a magnetic field, detectors should be selected under the criterion that their measured two-dimensional signal profiles M(x,y) approximate the absorbed dose to water profiles D(x,y) as closely as possible. Since the conversion of D(x,y) into M(x,y) is known as the convolution with the "lateral dose response function" K(x-, y-) of the detector, the ideal detector would be characterized by a vanishing magnetic field dependence of this convolution kernel (Looe et al 2017b)...
March 8, 2018: Physics in Medicine and Biology
Pierce K H Chow, Mihir Gandhi, Say-Beng Tan, Maung Win Khin, Ariunaa Khasbazar, Janus Ong, Su Pin Choo, Peng Chung Cheow, Chanisa Chotipanich, Kieron Lim, Laurentius A Lesmana, Tjakra W Manuaba, Boon Koon Yoong, Aloysius Raj, Chiong Soon Law, Ian H Y Cua, Rolley R Lobo, Catherine S C Teh, Yun Hwan Kim, Yun Won Jong, Ho-Seong Han, Si-Hyun Bae, Hyun-Ki Yoon, Rheun-Chuan Lee, Chien-Fu Hung, Cheng-Yuan Peng, Po-Chin Liang, Adam Bartlett, Kenneth Y Y Kok, Choon-Hua Thng, Albert Su-Chong Low, Anthony S W Goh, Kiang Hiong Tay, Richard H G Lo, Brian K P Goh, David C E Ng, Ganesh Lekurwale, Wei Ming Liew, Val Gebski, Kenneth S W Mak, Khee Chee Soo
Purpose Selective internal radiation therapy or radioembolization (RE) shows efficacy in unresectable hepatocellular carcinoma (HCC) limited to the liver. This study compared the safety and efficacy of RE and sorafenib in patients with locally advanced HCC. Patients and Methods SIRveNIB (selective internal radiation therapy v sorafenib), an open-label, investigator-initiated, phase III trial, compared yttrium-90 (90 Y) resin microspheres RE with sorafenib 800 mg/d in patients with locally advanced HCC in a two-tailed study designed for superiority/detriment...
March 2, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
Aditya Prabaswara, Jung-Wook Min, Chao Zhao, Bilal Janjua, Daliang Zhang, Abdulrahman M Albadri, Ahmed Y Alyamani, Tien Khee Ng, Boon S Ooi
Consumer electronics have increasingly relied on ultra-thin glass screen due to its transparency, scalability, and cost. In particular, display technology relies on integrating light-emitting diodes with display panel as a source for backlighting. In this study, we undertook the challenge of integrating light emitters onto amorphous quartz by demonstrating the direct growth and fabrication of a III-nitride nanowire-based light-emitting diode. The proof-of-concept device exhibits a low turn-on voltage of 2.6 V, on an amorphous quartz substrate...
February 6, 2018: Nanoscale Research Letters
Renly Lim, Men Long Liong, Yong Khee Lau, Kah Hay Yuen
OBJECTIVE: In order for a measure to reliably evaluate treatment efficacy, it is important that the measure used has adequate responsiveness. However, the responsiveness of the Golombok Rust Inventory of Sexual Satisfaction (GRISS) questionnaire, a highly recommended questionnaire by the International Consultation of Incontinence to assess sexual function in patients with incontinence, has not been established. To enable the use of GRISS to measure change in sexual function following incontinence treatment, we evaluated the short- and long-term responsiveness of the GRISS in couples with female stress urinary incontinence partners...
March 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
Kang-Ting Ho, Rui Chen, Guangyu Liu, Chao Shen, Jorge Holguin-Lerma, Abeer A Al-Saggaf, Tien Khee Ng, Mohamed-Slim Alouini, Jr-Hau He, Boon S Ooi
This paper presents the first demonstration of InGaN multiple quantum well (MQW) based micro-photodetectors (µPD) used as the optical receiver in orthogonal frequency-division multiplexing (OFDM) modulated visible communication system (VLC). The 80-µm diameter µPD exhibits a wavelength-selective responsivity in the near-UV to violet regime (374 nm - 408 nm) under a low reverse bias of -3 V. The modulation scheme of 16-quadrature amplitude modulation (16-QAM) OFDM enables the use of frequency response beyond -3 dB cutoff bandwidth of µPD...
February 5, 2018: Optics Express
Sudipto Bari, Qixing Zhong, Xiubo Fan, Zhiyong Poon, Alvin Soon Tiong Lim, Tse Hui Lim, Niraja Dighe, Shang Li, Gigi Ngar Chee Chiu, Christina Li Lin Chai, William Ying Khee Hwang
Umbilical cord blood (UCB) transplants in adults have slower hematopoietic recovery compared to bone marrow (BM) or peripheral blood (PB) stem cells mainly due to low number of total nucleated cells and hematopoietic stem and progenitor cells (HSPC). As such in this study, we aimed to perform ex vivo expansion of UCB HSPC from non-enriched mononucleated cells (MNC) using novel azole-based small molecules. Freshly-thawed UCB-MNC were cultured in expansion medium supplemented with small molecules and basal cytokine cocktail...
February 2, 2018: Stem Cells Translational Medicine
Yvonne Y R Ng, Grace H C Tan, Richard H H Quek, Mohamad B H R Farid, Khee Chee Soo, Melissa C C Teo
BACKGROUND: Primary mucosal melanomas (MM) are rare neoplasms arising from melanocytes in mucosal membranes. Delayed diagnosis and aggressive disease biology contribute to a poorer prognosis. The clinical patterns of MMs treated in a large tertiary centre, and the differences between MMs in the head and neck versus other anatomical sites are described. METHODS: A retrospective review of 43 patients diagnosed with MM in the head and neck, urogenital, esophageal and anorectal sites from 1993 to 2015 was conducted...
February 1, 2018: ANZ Journal of Surgery
Lijuan Sun, Stefan G Camps, Hui Jen Goh, Priya Govindharajulu, Joshua D Schaefferkoetter, David W Townsend, Sanjay K Verma, S Sendhil Velan, Lei Sun, Siu Kwan Sze, Su Chi Lim, Bernhard Otto Boehm, Christiani Jeyakumar Henry, Melvin Khee-Shing Leow
Background: Capsinoids are reported to increase energy expenditure (EE) via brown adipose tissue (BAT) stimulation. However, imaging of BAT activation by capsinoids remains limited. Because BAT activation is a potential therapeutic strategy for obesity and related metabolic disorders, we sought to prove that capsinoid-induced BAT activation can be visualized by 18-fluorine fluorodeoxyglucose (18F-FDG) positron emission tomography (PET). Objective: We compared capsinoids and cold exposure on BAT activation and whole-body EE...
January 1, 2018: American Journal of Clinical Nutrition
Eugenia Li Ling Yeo, Patricia Soo Ping Thong, Khee Chee Soo, James Chen Yong Kah
The protein corona is inevitably formed on nanoparticles (NPs) when they are introduced in vivo and has been associated with a reduction in targeting yield, immune recognition and rapid blood clearance, leading to poor tumor accumulation. We have recently shown that it is possible to exploit the protein corona for drug delivery by exploiting it for loading and triggering the release of a photosensitizer Chlorin e6 (Ce6) for simultaneous photodynamic (PDT) and photothermal therapy (PTT) in vitro. Here, we extended our previous in vitro studies to evaluate its effectiveness in vivo...
January 16, 2018: Nanoscale
Kheng Yong Ong, Hong Yun Wong, Giat Yeng Khee
No abstract text is available yet for this article.
January 2018: Cleveland Clinic Journal of Medicine
Kimberley L Kiong, Ngian Chye Tan, Thakshayeni Skanthakumar, Constance E H Teo, Khee Chee Soo, Hiang Khoon Tan, Elizabeth Roche, Kaisin Yee, N Gopalakrishna Iyer
Objective: Orocutaneous and pharyngocutaneous fistula (OPCF) is a debilitating complication of head and neck surgery for squamous cell carcinoma (SCC), resulting in delayed adjuvant treatment and prolonged hospitalization. As yet, there is no established test that can help in prompt and accurate diagnosis of OPCF. This study aims to determine the accuracy of bedside blue dye testing and its role as part of an algorithm for early diagnosis. We also analyze the risk factors predisposing to OPCF...
December 2017: Laryngoscope Investigative Otolaryngology
Sumanto Haldar, Siok Ching Chia, Sze Han Lee, Joseph Lim, Melvin Khee-Shing Leow, Eric Chun Yong Chan, Christiani Jeyakumar Henry
PURPOSE: To investigate acute effects of two doses of a polyphenol-rich curry made with seven different spices and four base vegetables, eaten with white rice, on 24 h glucose response, postprandial insulinemia, triglyceridemia and 24 h urinary total polyphenol excretion (TPE). METHODS: Randomized, controlled, dose-response crossover trial in healthy, Chinese men [n = 20, mean ± standard deviation (SD) age 23.7 ± 2.30 years, BMI 23.0 ± 2.31 kg/m2 ] who consumed test meals matched for calories, macronutrients and total vegetables content, consisting either Dose 0 Control (D0C) or Dose 1 Curry (D1C) or Dose 2 Curry (D2C) meal...
December 13, 2017: European Journal of Nutrition
Menno Evert Groeneveld, Natalija Bogunovic, René John Philip Musters, Geert Jan Tangelder, Gerard Pals, Willem Wisselink, Dimitra Micha, Kak Khee Yeung
BACKGROUND: Marfan syndrome (MFS), a congenital connective tissue disorder leading to aortic aneurysm development, is caused by fibrillin-1 (FBN1) gene mutations. Transforming growth factor beta (TGF-β) might play a role in the pathogenesis. It is still a matter of discussion if and how TGF-β up-regulates the intracellular downstream pathway, although TGF-β receptor 3 (TGFBR3 or Betaglycan) is thought to be involved. We aimed to elucidate the role of TGFBR3 protein in TGF-β signaling in Marfan patients...
January 2018: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
Ting Khee Ho, Julian D Satterthwaite, Nikolaos Silikas
OBJECTIVE: To assess the change in surface roughness of nanohybrid resin composite (Tetric EvoCeram) after antagonist wear against monolithic zirconia and lithium disilicate ceramics through a simulated chewing test using a three-dimensional (3D) profilometer. METHODS: A total of 40 Tetric EvoCeram™ resin composite specimens against either a Lava™ Plus zirconia antagonist (n=20) or IPS e.max Press lithium disilicate antagonist (n=20) were prepared for the study...
February 2018: Dental Materials: Official Publication of the Academy of Dental Materials
Bjoern Delfs, Andreas Alexander Schoenfeld, Daniela Poppinga, Ralf-Peter Kapsch, Ping Jiang, Dietrich Harder, Bjoern Poppe, Hui Khee Looe
The optical density (OD) of EBT3 radiochromic exposed to absorbed doses to water up to D = 20 Gy in magnetic fields of B = 0.35 and 1.42 T was measured in three colour channels. A 7 cm wide water phantom with fixed film holder was placed in magnetic fields and was irradiated by a 6 MV photon beam whose axis was directed at right angles with the field lines. The doses at the film position at water depth 5 cm were measured with a calibrated ionization chamber when the magnet was switched off and were converted to the doses in presence of the magnetic field via the monitor units and by a Monte Carlo-calculated correction accounting for the slight change of the depth dose curves in magnetic fields...
November 20, 2017: Physics in Medicine and Biology
Hui Khee Looe, Bjoern Delfs, Daniela Poppinga, Ping Jiang, Dietrich Harder, Bjoern Poppe
The well-known field-size dependent overresponse in small-field photon-beam dosimetry of solid-state detectors equipped with very thin sensitive volumes, such as the PTW microDiamond, cannot be caused by the photon and electron interactions within these sensitive layers because they are only a few micrometers thick. The alternative explanation is that their overresponse is caused by the combination of two effects, the modification of the secondary electron fluence profile i) by a field size too small to warrant lateral secondary electron equilibrium and ii) by the density-dependent electron ranges in the structural detector materials placed in front of or backing the sensitive layer...
November 17, 2017: Physics in Medicine and Biology
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
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 2 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...
December 1, 2017: Urology
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
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