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https://www.readbyqxmd.com/read/28257283/presentation-of-coefficient-of-variation-for-bioequivalence-sample-size-calculation%C3%A2
#1
Yi Lin Lee, Wen Yao Mak, Irene Looi, Jia Woei Wong, Kah Hay Yuen
The current study aimed to further contribute information on intrasubject coefficient of variation (CV) from 43 bioequivalence studies conducted by our center. Consistent with Yuen et al. (2001), current work also attempted to evaluate the effect of different parameters (AUC0-t, AUC0-∞, and Cmax) used in the estimation of the study power. Furthermore, we have estimated the number of subjects required for each study by looking at the values of intrasubject CV of AUC0-∞ and have also taken into consideration the minimum sample-size requirement set by the US FDA...
March 3, 2017: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28246074/delirium-after-mechanical-ventilation-in-intensive-care-units-the-cognitive-and-psychosocial-assessment-capa-study-protocol
#2
Daniella Bulic, Michael Bennett, Helen Rodgers, Mary Nourse, Patrick Rubie, Jeffrey Cl Looi, Frank Van Haren
BACKGROUND: In the intensive care unit (ICU), critical illness delirium occurs in the context of multiple comorbidities, multi-organ failure, and invasive management techniques, such as mechanical ventilation, sedation, and lack of sleep. Delirium is characterized by an acute confusional state defined by fluctuating mental status, inattention, and either disorganized thinking or an altered level of consciousness. The long-term cognitive and psychosocial function of patients that experience delirium in the ICU is of crucial interest because preliminary data suggest a strong association between ICU-related delirium and long-term cognitive impairment...
February 28, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28229272/prophylactic-implantable-cardioverter-defibrillator-in-heart-failure-the-growing-evidence-for-all-or-primum-non-nocere-for-some
#3
REVIEW
Khang-Li Looi, Nigel Lever, Anthony Tang, Sharad Agarwal
Heart failure (HF) is a common health problem and has reached epidemic in many western countries. Despite the current era of HF treatment, the risk of sudden cardiac death (SCD) in HF remains significant. Implantable cardioverter defibrillator (ICD) support has been shown to reduce the risk of SCD in patients with HF and impaired left ventricular function. Prophylactic ICD implantation in HF patients seems a logical step to reduce mortality through a reduction in SCD. However, ICD implantation is an invasive procedure, and both short- and long-term complications can occur...
February 23, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28158414/an-essential-pathology-package-for-low-and-middle-income-countries
#4
Kenneth A Fleming, Mahendra Naidoo, Michael Wilson, John Flanigan, Susan Horton, Modupe Kuti, Lai Meng Looi, Chris Price, Kun Ru, Abdul Ghafur, Jianxiang Wang, Nestor Lago
No abstract text is available yet for this article.
January 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28149676/genomic-insight-into-pathogenicity-of-dematiaceous-fungus-corynespora-cassiicola
#5
Hong Keat Looi, Yue Fen Toh, Su Mei Yew, Shiang Ling Na, Yung-Chie Tan, Pei-Sin Chong, Jia-Shiun Khoo, Wai-Yan Yee, Kee Peng Ng, Chee Sian Kuan
Corynespora cassiicola is a common plant pathogen that causes leaf spot disease in a broad range of crop, and it heavily affect rubber trees in Malaysia (Hsueh, 2011; Nghia et al., 2008). The isolation of UM 591 from a patient's contact lens indicates the pathogenic potential of this dematiaceous fungus in human. However, the underlying factors that contribute to the opportunistic cross-infection have not been fully studied. We employed genome sequencing and gene homology annotations in attempt to identify these factors in UM 591 using data obtained from publicly available bioinformatics databases...
2017: PeerJ
https://www.readbyqxmd.com/read/28145498/unraveling-the-cytotoxicity-and-metabolic-pathways-of-binary-natural-deep-eutectic-solvent-systems
#6
Yves Paul Mbous, Maan Hayyan, Won Fen Wong, Chung Yeng Looi, Mohd Ali Hashim
In this study, the anticancer potential and cytotoxicity of natural deep eutectic solvents (NADESs) were assessed using HelaS3, PC3, A375, AGS, MCF-7, and WRL-68 hepatic cell lines. NADESs were prepared from choline chloride, fructose, or glucose and compared with an N,N-diethyl ethanolammonium chloride:triethylene glycol DES. The NADESs (98 ≤ EC50 ≥ 516 mM) were less toxic than the DES (34 ≤ EC50 ≥ 120 mM). The EC50 values of the NADESs were significantly higher than those of the aqueous solutions of their individual components but were similar to those of the aqueous solutions of combinations of their chief elements...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28144140/renal-targeting-potential-of-a-polymeric-drug-carrier-poly-l-glutamic-acid-in-normal-and-diabetic-rats
#7
Hann-Juang Chai, Lik-Voon Kiew, Yunni Chin, Anwar Norazit, Suzita Mohd Noor, Yoke-Lin Lo, Chung-Yeng Looi, Yeh-Siang Lau, Tuck-Meng Lim, Won-Fen Wong, Nor Azizan Abdullah, Munavvar Zubaid Abdul Sattar, Edward J Johns, Zamri Chik, Lip-Yong Chung
BACKGROUND AND PURPOSE: Poly-l-glutamic acid (PG) has been used widely as a carrier to deliver anticancer chemotherapeutics. This study evaluates PG as a selective renal drug carrier. EXPERIMENTAL APPROACH: (3)H-deoxycytidine-labeled PGs (17 or 41 kDa) and (3)H-deoxycytidine were administered intravenously to normal rats and streptozotocin-induced diabetic rats. The biodistribution of these compounds was determined over 24 h. Accumulation of PG in normal kidneys was also tracked using 5-(aminoacetamido) fluorescein (fluoresceinyl glycine amide)-labeled PG (PG-AF)...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28121879/infant-robotic-cleft-palate-surgery-a-feasibility-assessment-using-a-realistic-cleft-palate-simulator
#8
Dale J Podolsky, David M Fisher, Karen W Y Wong Riff, Thomas Looi, James M Drake, Christopher R Forrest
BACKGROUND: A surgical robot offers enhanced precision, visualization, and access and the potential to improve outcomes in cleft palate surgery. The goal of this study was to investigate the feasibility of using the da Vinci robot for cleft palate repair in infants using a cleft palate simulator test bed. METHODS: A high-fidelity cleft palate simulator was developed that allows performance of a robotic cleft palate repair procedure. A complete cleft palate repair was performed with the da Vinci Si with 5-mm instruments and the da Vinci Xi with 8-mm instruments...
February 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28104669/sex-specific-outcomes-with-addition-of-defibrillation-to-resynchronisation-therapy-in-patients-with-heart-failure
#9
Sérgio Barra, Rui Providência, Rudolf Duehmke, Serge Boveda, Eloi Marijon, Christian Reitan, Rasmus Borgquist, Didier Klug, Pascal Defaye, Nicolas Sadoul, Jean-Claude Deharo, Iannish Sadien, Kiran Patel, Khang-Li Looi, David Begley, Anthony W Chow, Jean-Yves Le Heuzey, Sharad Agarwal
OBJECTIVE: Among primary prevention patients with heart failure receiving cardiac resynchronisation therapy (CRT), the impact of additional implantable cardioverter defibrillator (ICD) treatment on outcomes and its interaction with sex remains uncertain. We aim to assess whether the addition of the ICD functionality to CRT devices offers a more pronounced survival benefit in men compared with women, as previous research has suggested. METHODS: Observational multicentre cohort study of 5307 consecutive patients with ischaemic or non-ischaemic dilated cardiomyopathy and no history of sustained ventricular arrhythmias having CRT implantation with (cardiac resynchronisation therapy defibrillator (CRT-D), n=4037) or without (cardiac resynchronisation therapy pacemaker (CRT-P), n=1270) defibrillator functionality...
January 19, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28059856/lack-of-correlation-between-x-ray-repair-cross-complementing-group-1-gene-polymorphisms-and-the-susceptibility-to-colorectal-cancer-in-a-malaysian-cohort
#10
Tze-Pheng Lau, Lay-Hoong Lian, Phaik-Leng Cheah, Lai-Meng Looi, April C Roslani, Khean-Lee Goh, Ping-Chin Lee, Kek-Heng Chua
X-ray repair cross-complementing group 1 (XRCC1) is one of the key components in the base excision repair pathway that repairs erroneous DNA lesions and removes nonbulky base adducts for the maintenance of genome integrity. Studies have revealed that differences in individual DNA repair capacity can impact the interindividual variation in cancer susceptibility, tumour aggressiveness and treatment response. The relationship between XRCC1 and sporadic colorectal cancer (CRC) susceptibility, which is hitherto inconclusive, has been explored in many association studies of different populations...
January 4, 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28059579/activated-adi-pathway-the-initiator-of-intermediate-vancomycin-resistance-in-staphylococcus-aureus
#11
Xin-Ee Tan, Hui-Min Neoh, Mee-Lee Looi, Siok Fong Chin, Longzhu Cui, Keiichi Hiramatsu, Salasawati Hussin, Rahman Jamal
Comparative proteomic profiling between 2 vancomycin-intermediate Staphylococcus aureus (VISA) strains, Mu50Ω-vraSm and Mu50Ω-vraSm-graRm, and vancomycin-susceptible S. aureus (VSSA) strain Mu50Ω revealed upregulated levels of catabolic ornithine carbamoyltransferase (ArcB) of the arginine catabolism pathway in VISA strains. Subsequent analyses showed that the VISA strains have higher levels of cellular ATP and ammonia, which are by-products of arginine catabolism, and displayed thicker cell walls. We postulate that elevated cytoplasmic ammonia and ATP molecules, resulting from activated arginine catabolism upon acquisition of vraS and graR mutations, are important requirements facilitating cell wall biosynthesis, thereby contributing to thickened cell wall and consequently reduced vancomycin susceptibility in VISA strains...
October 19, 2016: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28031992/striatal-morphology-correlates-with-frontostriatal-electrophysiological-motor-processing-in-huntington-s-disease-an-image-hd-study
#12
Lauren M Turner, David Jakabek, Fiona A Wilkes, Rodney J Croft, Andrew Churchyard, Mark Walterfang, Dennis Velakoulis, Jeffrey C L Looi, Nellie Georgiou-Karistianis, Deborah Apthorp
BACKGROUND: Huntington's disease (HD) causes progressive atrophy to the striatum, a critical node in frontostriatal circuitry. Maintenance of motor function is dependent on functional connectivity of these premotor, motor, and dorsolateral frontostriatal circuits, and structural integrity of the striatum itself. We aimed to investigate whether size and shape of the striatum as a measure of frontostriatal circuit structural integrity was correlated with functional frontostriatal electrophysiological neural premotor processing (contingent negative variation, CNV), to better understand motoric structure-function relationships in early HD...
December 2016: Brain and Behavior
https://www.readbyqxmd.com/read/28028453/identification-and-characterization-of-daldinia-eschscholtzii-isolated-from-skin-scrapings-nails-and-blood
#13
Kee Peng Ng, Chai Ling Chan, Su Mei Yew, Siok Koon Yeo, Yue Fen Toh, Hong Keat Looi, Shiang Ling Na, Kok Wei Lee, Wai-Yan Yee, Chee Sian Kuan
BACKGROUND: Daldinia eschscholtzii is a filamentous wood-inhabiting endophyte commonly found in woody plants. Here, we report the identification and characterization of nine D. eschscholtzii isolates from skin scrapings, nail clippings, and blood. METHODS: The nine isolates were identified based on colony morphology, light microscopy, and internal transcribed spacer (ITS)-based phylogeny. In vitro antifungal susceptibility of the fungal isolates was evaluated by the Etest to determine the minimum inhibitory concentration (MIC)...
2016: PeerJ
https://www.readbyqxmd.com/read/28027241/evaluation-and-implementation-of-a-high-fidelity-cleft-palate-simulator
#14
Dale J Podolsky, David M Fisher, Karen W Wong, Thomas Looi, James M Drake, Christopher R Forrest
BACKGROUND: Cleft palate repair is a challenging procedure to learn because of the delicate tissue handling required and the small confines of the infant oral cavity. As a result, cleft palate simulators have previously been described to augment cleft palate repair training. Although valuable, they lack the fidelity for this complex procedure. METHODS: A high-fidelity cleft palate simulator was evaluated by staff and fellows in pediatric plastic surgery who provided feedback on its realism, anatomical accuracy, and effectiveness as a training tool...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27936200/correction-assessment-of-telomere-length-in-archived-formalin-fixed-paraffinized-human-tissue-is-confounded-by-chronological-age-and-storage-duration
#15
Po-Lian Kong, Lai-Meng Looi, Tze-Pheng Lau, Phaik-Leng Cheah
[This corrects the article DOI: 10.1371/journal.pone.0161720.].
2016: PloS One
https://www.readbyqxmd.com/read/27923764/applications-of-deep-eutectic-solvents-in-biotechnology-and-bioengineering-promises-and-challenges
#16
REVIEW
Yves Paul Mbous, Maan Hayyan, Adeeb Hayyan, Won Fen Wong, Mohd Ali Hashim, Chung Yeng Looi
Deep eutectic solvents (DESs) have been touted recently as potential alternatives to ionic liquids (ILs). Although they possess core characteristics that are similar to those of ILs (e.g., low volatility, non-flammability, low melting points, low vapor pressure, dipolar nature, chemical and thermal stability, high solubility, and tuneability), DESs are superior in terms of the availability of raw materials, the ease of storage and synthesis, and the low cost of their starting materials. As such, they have become the subject of intensive research in various sectors, notably the chemical, electrochemical, and biological sectors...
March 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/27905023/distinct-cortical-and-sub-cortical-neurogenic-domains-for-gabaergic-interneuron-precursor-transcription-factors-nkx2-1-olig2-and-coup-tfii-in-early-fetal-human-telencephalon
#17
Ayman Alzu'bi, Susan Lindsay, Janet Kerwin, Shi Jie Looi, Fareha Khalil, Gavin J Clowry
The extent of similarities and differences between cortical GABAergic interneuron generation in rodent and primate telencephalon remains contentious. We examined expression of three interneuron precursor transcription factors, alongside other markers, using immunohistochemistry on 8-12 post-conceptional weeks (PCW) human telencephalon sections. NKX2.1, OLIG2, and COUP-TFII expression occupied distinct (although overlapping) neurogenic domains which extended into the cortex and revealed three CGE compartments: lateral, medial, and ventral...
November 30, 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/27888241/neuropsychiatry-a-synthesis-of-clinical-and-scientific-fields-for-disorders-of-mind-and-body
#18
EDITORIAL
Jeffrey Cl Looi
No abstract text is available yet for this article.
December 2016: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/27801388/a-review-of-stroke-research-in-malaysia-from-2000-2014
#19
W K Cheah, C P Hor, A A Zariah, I Looi
Over 100 articles related to stroke were found in a search through a database dedicated to indexing all literature with original data involving the Malaysian population between years 2000 and 2014. Stroke is emerging as a major public health problem. The development of the National Stroke Registry in the year 2009 aims to coordinate and improve stroke care, as well as to generate more data on various aspects of stroke in the country. Studies on predictors of survival after strokes have shown potential to improve the overall management of stroke, both during acute event and long term care...
June 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/27775047/repetitive-electroacupuncture-attenuates-cold-induced-hypertension-through-enkephalin-in-the-rostral-ventral-lateral-medulla
#20
Min Li, Stephanie C Tjen-A-Looi, Zhi-Ling Guo, John C Longhurst
Acupuncture lowers blood pressure (BP) in hypertension, but mechanisms underlying its action are unclear. To simulate clinical studies, we performed electroacupuncture (EA) in unanesthetized rats with cold-induced hypertension (CIH) induced by six weeks of cold exposure (6 °C). EA (0.1 - 0.4 mA, 2 Hz) was applied at ST36-37 acupoints overlying the deep peroneal nerve for 30 min twice weekly for five weeks while sham-EA was conducted with the same procedures as EA except for no electrical stimulation...
October 24, 2016: Scientific Reports
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