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Md Akter Hussain, Alauddin Bhuiyan, Andrew Turpin, Chi D Luu, R Theodore Smith, Robyn H Guymer, Ramamohanarao Kotagiri
OBJECTIVE: We propose an effective, automatic method for identification of four retinal layer boundaries from the Spectral Domain Optical Coherence Tomography (SD-OCT) images in the presence and absence of pathologies and morphological changes due to disease. METHODS: The approach first finds an approximate location of three reference layers, and then uses these to bound the search space for the actual layers, which is achieved by modeling the problem as a graph and applying Dijkstra's shortest path algorithm...
October 19, 2016: IEEE Transactions on Bio-medical Engineering
Caitlin G Howe, Xinhua Liu, Megan N Hall, Vesna Ilievski, Marie A Caudill, Olga Malysheva, Angela M Lomax-Luu, Faruque Parvez, Abu B Siddique, Hasan Shahriar, Mohammad N Uddin, Tariqul Islam, Joseph H Graziano, Max Costa, Mary V Gamble
BACKGROUND: Posttranslational histone modifications (PTHMs) are altered by arsenic, an environmental carcinogen. PTHMs are also influenced by nutritional methyl donors involved in one-carbon metabolism (OCM), which may protect against epigenetic dysregulation. METHODS: We measured global levels of three PTHMs, which are dysregulated in cancers (H3K36me2, H3K36me3, H3K79me2), in peripheral blood mononuclear cells (PBMCs) from 324 participants enrolled in the Folic Acid and Creatine Trial, a randomized trial in arsenic-exposed Bangladeshi adults...
October 20, 2016: Cancer Epidemiology, Biomarkers & Prevention
Risha L Moskalewicz, Leidy L Isenalumhe, Cindy Luu, Choo Phei Wee, Alan L Nager
OBJECTIVE: To examine clinical characteristics associated with bacteremia in febrile nonneutropenic pediatric oncology patients with central venous catheters (CVCs) in the emergency department (ED). BACKGROUND: Fever is the primary reason pediatric oncology patients present to the ED. The literature states that 0.9% to 39% of febrile nonneutropenic oncology patients are bacteremic, yet few studies have investigated infectious risk factors in this population. METHODS: This was a retrospective cohort study in a pediatric ED, reviewing medical records from 2002 to 2014...
September 17, 2016: American Journal of Emergency Medicine
M Garg, M Zhan, T T Luu, H Lakhotia, T Klostermann, A Guggenmos, E Goulielmakis
The frequency of electric currents associated with charge carriers moving in the electronic bands of solids determines the speed limit of electronics and thereby that of information and signal processing. The use of light fields to drive electrons promises access to vastly higher frequencies than conventionally used, as electric currents can be induced and manipulated on timescales faster than that of the quantum dephasing of charge carriers in solids. This forms the basis of terahertz (10(12) hertz) electronics in artificial superlattices, and has enabled light-based switches and sampling of currents extending in frequency up to a few hundred terahertz...
October 19, 2016: Nature
Ryan A Durfee, Maryam Mohammed, Hue H Luu
Osteosarcoma is the most common primary malignancy of bone in children and young adults. This tumor has a very heterogeneous genetic profile and lacks any consistent unifying event that leads to the pathogenesis of osteosarcoma. In this review, some of the important genetic events involved in osteosarcoma will be highlighted. Additionally, the clinical diagnosis of osteosarcoma will be discussed, as well as contemporary chemotherapeutic and surgical management of this tumor. Finally, the review will discuss some of the novel approaches to treating this disease...
October 19, 2016: Rheumatol Ther
Anne Synnes, Thuy Mai Luu, Diane Moddemann, Paige Church, David Lee, Michael Vincer, Marilyn Ballantyne, Annette Majnemer, Dianne Creighton, Junmin Yang, Reginald Sauve, Saroj Saigal, Prakesh Shah, Shoo K Lee
OBJECTIVES: Identify determinants of neurodevelopmental outcome in preterm children. METHODS: Prospective national cohort study of children born between 2009 and 2011 at <29 weeks gestational age, admitted to one of 28 Canadian neonatal intensive care units and assessed at a Canadian Neonatal Follow-up Network site at 21 months corrected age for cerebral palsy (CP), visual, hearing and developmental status using the Bayley Scales of Infant and Toddler Development-Third Edition (Bayley-III)...
October 6, 2016: Archives of Disease in Childhood. Fetal and Neonatal Edition
Pham Huu Thuong, Do Bang Tam, Shinsaku Sakurada, Nguyen Thi Le Hang, Minako Hijikata, Le Thi Hong, Phan Thi Minh Ngoc, Pham Thu Anh, Vu Cao Cuong, Ikumi Matsushita, Luu Thi Lien, Naoto Keicho
BACKGROUND: Granulysin (GNLY) is produced by human lymphocyte subpopulations and exhibits antimicrobial activity against Mycobacterium tuberculosis. We examined the association between GNLY levels in blood and latent tuberculosis (TB) infection. METHODS: Latency of TB infection among Vietnamese healthcare workers was estimated using interferon-gamma release assays (IGRA), and serum GNLY concentrations were measured using enzyme-linked immunosorbent assays. The levels of GNLY expression in whole blood and the presence of GNLY alleles with the exon-4 polymorphism rs11127 were also determined using PCR-based methods...
October 18, 2016: BMC Infectious Diseases
Rogan G Fraser, Rose Tan, Lauren N Ayton, Emily Caruso, Robyn H Guymer, Chi D Luu
Purpose: We determine the feasibility of using a dark-adapted chromatic (DAC) perimeter to obtain dark-adapted static and dynamic rod function at multiple retinal locations, and compare these functional parameters between subjects with intermediate age-related macular degeneration (AMD) and normal controls. Methods: Perimetric dark-adapted retinal sensitivities for the 505 and 620 nm stimuli across 7 retinal locations within the central 12° were repeatedly measured after exposing to a single photobleach in 22 intermediate AMD subjects and 8 controls...
October 1, 2016: Investigative Ophthalmology & Visual Science
Muhammad Oneeb Rehman Mian, Julie Demeulemeester, Jean-Luc Bigras, Mariane Bertagnolli, Li Feng Xie, Katryn Paquette, Rong Wu, Anik Cloutier, Thuy Mai Luu, Anne-Monique Nuyt
OBJECTIVE: Studies support a direct causal association between preterm birth and increased risk of cardiovascular diseases. Increased left and right ventricular mass, and impaired systolic and diastolic function were observed in young adults born preterm. Deleterious neonatal conditions, as in preterm birth, could significantly impact on myocardial tissue. We investigated how left ventricle (LV) echocardiographic parameters in young adults born preterm correlated with neonatal health parameters and interventions data...
September 2016: Journal of Hypertension
John C Kubasiak, Mackenzie Landin, Scott Schimpke, Jennifer Poirier, Jonathan A Myers, Keith W Millikan, Minh B Luu
INTRODUCTION: Tobacco smoking is a known risk factor for complications after major surgical procedures. The full effect of tobacco use on these complications has not been studied over large populations for ventral hernia repairs. This effect is more important as the preoperative conditioning, and optimization of patients is adopted. We sought to use the prospectively collected ACS-NSQIP dataset to evaluate respiratory and infectious complications for patients undergoing both laparoscopic and open ventral hernia repairs...
October 17, 2016: Surgical Endoscopy
Grace J Young, Nicole Harter, Minnelly Luu
No abstract text is available yet for this article.
September 2016: JAAD Case Reports
Maxime Luu, Marc Bardou, Philippe Bonniaud, Françoise Goirand
Omalizumab is a subcutaneously administrated monoclonal anti-IgE antibody indicated in adults, adolescents and children 6 years of age and older with moderate to severe allergic asthma uncontrolled by conventional pharmacological treatments and sensitization to at least one perennial allergen. Area covered: This drug evaluation summarizes published data on pharmacokinetic and pharmacodynamic properties of omalizumab, on clinical efficacy and safety, including real-world evidence, and provides a medico-economic evaluation of the drug...
October 17, 2016: Expert Opinion on Drug Metabolism & Toxicology
Liezhen Fu, Luan Wen, Nga Luu, Yun-Bo Shi
Genome editing with designer nucleases such as TALEN and CRISPR/Cas enzymes has broad applications. Delivery of these designer nucleases into organisms induces various genetic mutations including deletions, insertions and nucleotide substitutions. Characterizing those mutations is critical for evaluating the efficacy and specificity of targeted genome editing. While a number of methods have been developed to identify the mutations, none other than sequencing allows the identification of the most desired mutations, i...
October 17, 2016: Scientific Reports
Wen-Chi Wu, Shyuemeng Luu, Dih-Ling Luh
BACKGROUND: Students should be encouraged to help prevent or stop bullying. However, defending victims of bullying can impact on mental health. It is not only bystanders who may defend victims, but bullies, victims and bully-victims can also have defending behaviors. Nevertheless, most studies of defending behaviors have been limited to an examination of the reactions of bystanders or those not involved in bullying and have ignored the other players. The aim of this study is to investigate the associations between defending behaviors and mental health among bullies, victims, bully-victims and bystanders...
October 10, 2016: BMC Public Health
Brian J Johnson, Tim Hurst, Hung Luu Quoc, Isik Unlu, Christopher Freebairn, Ary Faraji, Scott A Ritchie
We report on the use of the Gravid Aedes Trap (GAT) as a surveillance device for Aedes albopictus (Skuse) relative to the BG-Sentinel (BGS) trap in field studies conducted in Trenton, NJ, and on Hammond Island, Queensland, Australia. A parallel study conducted in Nha Trang, Vietnam, assessed the use of the GAT as an indoor surveillance device as well as the use of canola oil as a noninsecticide killing agent. In Trenton and Hammond Island, the GAT collected fewer male (0.40 ± 0.12 and 0.43 ± 0.30, respectively) and female (3...
October 5, 2016: Journal of Medical Entomology
Felix P Aplin, Erica L Fletcher, Chi D Luu, Kirstan A Vessey, Penelope J Allen, Robyn H Guymer, Robert K Shepherd, Mohit N Shivdasani
Purpose: Retinal prostheses have emerged as a promising technology to restore vision in patients with severe photoreceptor degeneration. To better understand how neural degeneration affects the efficacy of electronic implants, we investigated the function of a suprachoroidal retinal implant in a feline model. Methods: Unilateral retinal degeneration was induced in four adult felines by intravitreal injection of adenosine triphosphate (ATP). Twelve weeks post injection, animals received suprachoroidal electrode array implants in each eye, and responses to electrical stimulation were obtained using multiunit recordings from the visual cortex...
October 1, 2016: Investigative Ophthalmology & Visual Science
Anika V Prabhu, Winnie Luu, Dianfan Li, Laura J Sharpe, Andrew J Brown
The conversion of 7-dehydrocholesterol to cholesterol, the final step of cholesterol synthesis in the Kandutsch-Russell pathway, is catalyzed by the enzyme 7-dehydrocholesterol reductase (DHCR7). Homozygous or compound heterozygous mutations in DHCR7 lead to the developmental disease Smith-Lemli-Opitz syndrome, which can also result in fetal mortality, highlighting the importance of this enzyme in human development and survival. Besides serving as a substrate for DHCR7, 7-dehydrocholesterol is also a precursor of vitamin D via the action of ultraviolet light on the skin...
September 30, 2016: Progress in Lipid Research
Luu V Pham, Vsevolod Y Polotsky
No abstract text is available yet for this article.
October 1, 2016: American Journal of Respiratory and Critical Care Medicine
Hoang Van Tong, Nguyen Kim Luu, Ho Anh Son, Nguyen Van Hoan, Trinh Thanh Hung, Thirumalaisamy P Velavan, Nguyen Linh Toan
AIM: Adipose tissue-derived hormones are associated with metabolic disorders including T2DM. This study investigated the levels of adiponectin and pro-inflammatory cytokines including tumor necrosis factor-α (TNF-α), Interleukin-1 beta (IL-1β), Interleukin-10 (IL-10) in Vietnamese patients with type 2 diabetes mellitus (T2DM) and their correlations with clinical parameters of overweight and T2DM. MATERIALS AND METHODS: Based on body mass index (BMI), 73 patients with T2DM were divided either as overweight or non-overweight subjects...
September 29, 2016: Journal of Diabetes Investigation
W Watkins, R O Kowalchuk, A N Luu, J V Siebers
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
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