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Rebecca wong

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https://www.readbyqxmd.com/read/28645976/a-combined-randomised-and-observational-study-of-surgery-for-fractures-in-the-distal-radius-in-the-elderly-crossfire-a-study-protocol
#1
Ian A Harris, Justine M Naylor, Andrew Lawson, Rachelle Buchbinder, Rebecca Ivers, Zsolt Balogh, Paul Smith, Rajat Mittal, Wei Xuan, Kirsten Howard, Arezoo Vafa, Piers Yates, Bertram Rieger, Geoff Smith, Ilia Elkinson, Woosung Kim, Mellick Chehade, Jai Sungaran, Kim Latendresse, James Wong, Sameer Viswanathan, Martin Richardson, Kush Shrestha, Herwig Drobetz, Phong Tran, Jeremy Loveridge, Richard Page, Raphael Hau, Roger Bingham, Jonathan Mulford, Ian Incoll
Fractures of the distal radius are common and occur in all age groups. The incidence is high in older populations due to osteoporosis and increased falls risk. Considerable practice variation exists in the management of distal radius fractures in older patients ranging from closed reduction with cast immobilisation to open reduction with plate fixation. Plating is currently the most common surgical treatment. While there is evidence showing no significant advantage for some forms of surgical fixation over conservative treatment, and no difference between different surgical techniques, there is a lack of evidence comparing two of the most common treatments used: closed reduction and casting versus plating...
June 23, 2017: BMJ Open
https://www.readbyqxmd.com/read/28640244/systematic-design-and-comparison-of-expanded-carrier-screening-panels
#2
Kyle A Beauchamp, Dale Muzzey, Kenny K Wong, Gregory J Hogan, Kambiz Karimi, Sophie I Candille, Nikita Mehta, Rebecca Mar-Heyming, K Eerik Kaseniit, H Peter Kang, Eric A Evans, James D Goldberg, Gabriel A Lazarin, Imran S Haque
PurposeThe recent growth in pan-ethnic expanded carrier screening (ECS) has raised questions about how such panels might be designed and evaluated systematically. Design principles for ECS panels might improve clinical detection of at-risk couples and facilitate objective discussions of panel choice.MethodsGuided by medical-society statements, we propose a method for the design of ECS panels that aims to maximize the aggregate and per-disease sensitivity and specificity across a range of Mendelian disorders considered serious by a systematic classification scheme...
June 22, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28598251/molecular-characterization-of-methicillin-resistant-staphylococcus-aureus-isolated-from-australian-animals-and-veterinarians
#3
Kate A Worthing, Sam Abraham, Stanley Pang, Geoffrey W Coombs, Sugiyono Saputra, David Jordan, Hui S Wong, Rebecca J Abraham, Darren J Trott, Jacqueline M Norris
This study aimed to determine the frequency and molecular epidemiology of methicillin-resistant Staphylococcus aureus (MRSA) from Australian animals and whether animal-derived MRSA was similar to that from Australian veterinarians. A total of 1,080 clinical coagulase positive Staphylococcus isolates from Australian animals were collected during 2013. Sixteen (4%) of 360 S. aureus isolates were MRSA. Most MRSA came from companion animals, while none came from livestock. MRSA isolates were characterized using whole genome sequencing...
June 9, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28560329/fast-label-free-multilayered-histology-like-imaging-of-human-breast-cancer-by-photoacoustic-microscopy
#4
Terence T W Wong, Ruiying Zhang, Pengfei Hai, Chi Zhang, Miguel A Pleitez, Rebecca L Aft, Deborah V Novack, Lihong V Wang
The goal of breast-conserving surgery is to completely remove all of the cancer. Currently, no intraoperative tools can microscopically analyze the entire lumpectomy specimen, which results in 20 to 60% of patients undergoing second surgeries to achieve clear margins. To address this critical need, we have laid the foundation for the development of a device that could allow accurate intraoperative margin assessment. We demonstrate that by taking advantage of the intrinsic optical contrast of breast tissue, photoacoustic microscopy (PAM) can achieve multilayered histology-like imaging of the tissue surface...
May 2017: Science Advances
https://www.readbyqxmd.com/read/28550518/racial-ethnic-differences-in-perception-of-need-for-mental-health-treatment-in-a-us-national-sample
#5
Joshua Breslau, Matthew Cefalu, Eunice C Wong, M Audrey Burnam, Gerald P Hunter, Karen R Florez, Rebecca L Collins
PURPOSE: To resolve contradictory evidence regarding racial/ethnic differences in perceived need for mental health treatment in the USA using a large and diverse epidemiologic sample. METHODS: Samples from 6 years of a repeated cross-sectional survey of the US civilian non-institutionalized population were combined (N = 232,723). Perceived need was compared across three non-Hispanic groups (whites, blacks and Asian-Americans) and two Hispanic groups (English interviewees and Spanish interviewees)...
May 26, 2017: Social Psychiatry and Psychiatric Epidemiology
https://www.readbyqxmd.com/read/28533558/investigating-the-causal-effect-of-smoking-on-hay-fever-and-asthma-a-mendelian-randomization-meta-analysis-in-the-carta-consortium
#6
Tea Skaaby, Amy E Taylor, Rikke K Jacobsen, Lavinia Paternoster, Betina H Thuesen, Tarunveer S Ahluwalia, Sofus C Larsen, Ang Zhou, Andrew Wong, Maiken E Gabrielsen, Johan H Bjørngaard, Claudia Flexeder, Satu Männistö, Rebecca Hardy, Diana Kuh, Sarah J Barry, Line Tang Møllehave, Charlotte Cerqueira, Nele Friedrich, Tobias N Bonten, Raymond Noordam, Dennis O Mook-Kanamori, Christian Taube, Leon E Jessen, Alex McConnachie, Naveed Sattar, Mark N Upton, Charles McSharry, Klaus Bønnelykke, Hans Bisgaard, Holger Schulz, Konstantin Strauch, Thomas Meitinger, Annette Peters, Harald Grallert, Ellen A Nohr, Mika Kivimaki, Meena Kumari, Uwe Völker, Matthias Nauck, Henry Völzke, Chris Power, Elina Hyppönen, Torben Hansen, Torben Jørgensen, Oluf Pedersen, Veikko Salomaa, Niels Grarup, Arnulf Langhammer, Pål R Romundstad, Frank Skorpen, Jaakko Kaprio, Marcus R Munafò, Allan Linneberg
Observational studies on smoking and risk of hay fever and asthma have shown inconsistent results. However, observational studies may be biased by confounding and reverse causation. Mendelian randomization uses genetic variants as markers of exposures to examine causal effects. We examined the causal effect of smoking on hay fever and asthma by using the smoking-associated single nucleotide polymorphism (SNP) rs16969968/rs1051730. We included 231,020 participants from 22 population-based studies. Observational analyses showed that current vs never smokers had lower risk of hay fever (odds ratio (OR) = 0·68, 95% confidence interval (CI): 0·61, 0·76; P < 0·001) and allergic sensitization (OR = 0·74, 95% CI: 0·64, 0·86; P < 0·001), but similar asthma risk (OR = 1·00, 95% CI: 0·91, 1·09; P = 0·967)...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28531315/the-interaction-between-cytosine-methylation-and-processes-of-dna-replication-and-repair-shape-the-mutational-landscape-of-cancer-genomes
#7
Rebecca C Poulos, Jake Olivier, Jason W H Wong
Methylated cytosines (5mCs) are frequently mutated in the genome. However, no studies have yet comprehensively analysed mutation-methylation associations across cancer types. Here we analyse 916 cancer genomes, together with tissue type-specific methylation and replication timing data. We describe a strong mutation-methylation association across colorectal cancer subtypes, most interestingly in samples with microsatellite instability (MSI) or Polymerase epsilon (POLE) exonuclease domain mutations. By analysing genomic regions with differential mismatch repair (MMR) efficiency, we suggest a possible role for MMR in the correction of 5mC deamination events, potentially accounting for the high rate of 5mC mutation accumulation in MSI tumours...
May 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28486861/clinical-and-psychosocial-predictors-of-exceeding-target-length-of-stay-during-inpatient-stroke-rehabilitation
#8
Wesley Lai, Mackenzie Buttineau, Jennifer K Harvey, Rebecca A Pucci, Anna P M Wong, Linda Dell'Erario, Stephanie Bosnyak, Shannon Reid, Nancy M Salbach
BACKGROUND: In Ontario, Canada, patients admitted to inpatient rehabilitation hospitals post-stroke are classified into rehabilitation patient groups based on age and functional level. Clinical practice guidelines, called quality-based procedures, recommend a target length of stay (LOS) for each group. OBJECTIVES: The study objective was to evaluate the extent to which patients post-stroke at an inpatient rehabilitation hospital are meeting LOS targets and to identify patient characteristics that predict exceeding target LOS...
May 9, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28475999/prevalence-and-risk-factors-of-seizure-clusters-in-adult-patients-with-epilepsy
#9
Baibing Chen, Hyunmi Choi, Lawrence J Hirsch, Austen Katz, Alexander Legge, Rebecca A Wong, Alfred Jiang, Kenneth Kato, Richard Buchsbaum, Kamil Detyniecki
PURPOSE: In the current study, we explored the prevalence of physician-confirmed seizure clusters. We also investigated potential clinical factors associated with the occurrence of seizure clusters overall and by epilepsy type. METHODS: We reviewed medical records of 4116 adult (≥16years old) outpatients with epilepsy at our centers for documentation of seizure clusters. Variables including patient demographics, epilepsy details, medical and psychiatric history, AED history, and epilepsy risk factors were then tested against history of seizure clusters...
July 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28463503/hysteresis-free-carbon-nanotube-field-effect-transistors
#10
Rebecca S Park, Gage Hills, Joon Sohn, Subhasish Mitra, Max M Shulaker, H-S Philip Wong
While carbon nanotube (CNT) field-effect transistors (CNFETs) promise high-performance and energy-efficient digital systems, large hysteresis degrades these potential CNFET benefits. As hysteresis is caused by traps surrounding the CNTs, previous works have shown that clean interfaces that are free of traps are important to minimize hysteresis. Our previous findings on the sources and physics of hysteresis in CNFETs enabled us to understand the influence of gate dielectric scaling on hysteresis. To begin with, we validate through simulations how scaling the gate dielectric thickness results in greater-than-expected benefits in reducing hysteresis...
May 4, 2017: ACS Nano
https://www.readbyqxmd.com/read/28460185/establishing-wiring-specificity-in-visual-system-circuits-from-the-retina-to-the-brain
#11
Chi Zhang, Alex L Kolodkin, Rachel O Wong, Rebecca E James
The retina is a tremendously complex image processor, containing numerous cell types that form microcircuits encoding different aspects of the visual scene. Each microcircuit exhibits a distinct pattern of synaptic connectivity. The developmental mechanisms responsible for this patterning are just beginning to be revealed. Furthermore, signals processed by different retinal circuits are relayed to specific, often distinct, brain regions. Thus, much work has focused on understanding the mechanisms that wire retinal axonal projections to their appropriate central targets...
April 26, 2017: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/28458444/functional-analysis-of-the-coronary-heart-disease-risk-locus-on-chromosome-21q22
#12
Katherine E Beaney, Andrew J P Smith, Lasse Folkersen, Jutta Palmen, S Goya Wannamethee, Barbara J Jefferis, Peter Whincup, Tom R Gaunt, Juan P Casas, Yoav Ben-Shlomo, Jacqueline F Price, Meena Kumari, Andrew Wong, Ken Ong, Rebecca Hardy, Diana Kuh, Nicholas Wareham, Mika Kivimaki, Per Eriksson, Steve E Humphries, Ucleb Consortium
Background. The coronary heart disease (CHD) risk locus on 21q22 (lead SNP rs9982601) lies within a "gene desert." The aim of this study was to assess if this locus is associated with CHD risk factors and to identify the functional variant(s) and gene(s) involved. Methods. A phenome scan was performed with UCLEB Consortium data. Allele-specific protein binding was studied using electrophoretic mobility shift assays. Dual-reporter luciferase assays were used to assess the impact of genetic variation on expression...
2017: Disease Markers
https://www.readbyqxmd.com/read/28456096/identifying-low-density-lipoprotein-cholesterol-associated-variants-in-the-annexin-a2-anxa2-gene
#13
Roaa Hani Fairoozy, Jackie Cooper, Jon White, Claudia Giambartolomei, Lasse Folkersen, S Goya Wannamethee, Barbara J Jefferis, Peter Whincup, Yoav Ben-Shlomo, Meena Kumari, Mika Kivimaki, Andrew Wong, Rebecca Hardy, Diana Kuh, Tom R Gaunt, J P Casas, Stela McLachlan, Jackie F Price, Aroon Hingorani, Anders Franco-Cereceda, Thomas Grewal, Anastasia Z Kalea, Steve E Humphries
BACKGROUND AND AIMS: Annexin-A2 (AnxA2) is an endogenous inhibitor of proprotein convertase subtilisin/kexin type-9 (PCSK9). The repeat-one (R1) domain of AnxA2 binds to PCSK9, blocking its ability to promote degradation of low-density lipoprotein cholesterol-receptors (LDL-R) and thereby regulate low-density lipoprotein cholesterol (LDL-C) levels. Here we identify variants in ANXA2 influencing LDL-C levels and we determine the molecular mechanisms of their effects. RESULTS: The ANXA2 single nucleotide polymorphism (SNP) genotype-phenotype association was examined using the Second-Northwick-Park Heart Study (NPHSII) (n∼2700) and the UCL-LSHTM-Edinburgh-Bristol (UCLEB) consortium (n∼14,600)...
June 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28455250/a-longitudinal-randomized-trial-of-the-effect-of-consistent-pain-management-for-infant-vaccinations-on-future-vaccination-distress
#14
Anna Taddio, Rebecca Pillai Riddell, Moshe Ipp, Steven Moss, Stephen Baker, Jonathan Tolkin, Malini Dave, Sharmeen Feerasta, Preeya Govan, Emma Fletcher, Horace Wong, Caitlin McNair, Priyanjali Mithal, Derek Stephens
The objective was to determine if consistent pain management during vaccine injections has a beneficial effect on future infant pain reactivity. This was a multicenter, longitudinal, double-blind, double-dummy, add-on, randomized controlled trial. Healthy infants were randomized to 1 of 4 add-on pain management regimens for all vaccinations in the first year of life: 1) placebo control (standard care), 2) parent video education about infant soothing (video), 3) video and oral sucrose solution (sucrose), 4) video and sucrose and topical liposomal lidocaine (lidocaine)...
April 26, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28449588/disparities-in-hiv-knowledge-and-attitudes-toward-biomedical-interventions-among-the-non-medical-hiv-workforce-in-the-united-states
#15
Raniyah M Copeland, Phill Wilson, Gabriela Betancourt, David Garcia, Murray Penner, Rebecca Abravanel, Eric Y Wong, Lori D Parisi
Non-medical, community-based workers play a critical role in supporting people living with (or at risk of acquiring) HIV along the care continuum. The biomedical nature of promising advances in HIV prevention, such as pre-exposure prophylaxis and treatment-as-prevention, requires frontline workers to be knowledgeable about HIV science and treatment. This study was developed to: measure knowledge of HIV science and treatment within the HIV non-medical workforce, evaluate workers' familiarity with and attitudes toward recent biomedical interventions, and identify factors that may affect HIV knowledge and attitudes...
April 27, 2017: AIDS Care
https://www.readbyqxmd.com/read/28442242/dosimetric-analysis-of-liver-toxicity-after-liver-metastasis-stereotactic-body-radiation-therapy
#16
Aisling Barry, Andrew McPartlin, Patricia Lindsay, Lisa Wang, James Brierley, John Kim, Jolie Ringash, Rebecca Wong, Rob Dinniwell, Tim Craig, Laura A Dawson
PURPOSE: The aim of this study is to describe the incidence and type of liver toxicity seen following liver metastases stereotactic body radiation therapy (SBRT) and the corresponding clinical and dosimetric factors associated with toxicity. METHODS AND MATERIALS: Between 2002 and 2009, 81 evaluable patients with liver metastases were treated on 2 prospective studies assessing SBRT, with prescription doses based on the effective liver volume irradiated evaluated...
March 9, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28434912/the-role-of-social-emotional-and-social-network-factors-in-the-relationship-between-academic-achievement-and-risky-behaviors
#17
Mitchell D Wong, Danielle Strom, Lourdes R Guerrero, Paul J Chung, Desiree Lopez, Katherine Arellano, Rebecca N Dudovitz
BACKGROUND: We examined whether standardized test scores and grades are related to risky behaviors among low-income minority adolescents and whether social networks and social-emotional factors explained those relationships. METHODS: We analyzed data from 929 high school students exposed by natural experiment to high- or low-performing academic environments in Los Angeles. We collected information on grade point average (GPA), substance use, sexual behaviors, participation in fights, and carrying a weapon from face-to-face interviews and obtained California math and English standardized test results...
April 18, 2017: Academic Pediatrics
https://www.readbyqxmd.com/read/28430811/antimicrobial-resistance-in-coagulase-positive-staphylococci-isolated-from-companion-animals-in-australia-a-one-year-study
#18
Sugiyono Saputra, David Jordan, Kate A Worthing, Jacqueline M Norris, Hui S Wong, Rebecca Abraham, Darren J Trott, Sam Abraham
Methicillin-resistant coagulase-positive staphylococci (CoPS) have become increasingly recognised as opportunistic pathogens that limit therapeutic options in companion animals. The frequency of methicillin resistance amongst clinical isolates on an Australia-wide level is unknown. This study determined antimicrobial susceptibility patterns for CoPS isolated from clinical infections in companion animals (dogs, cats and horses) as part of the first nation-wide survey on antimicrobial resistance in animal pathogens in Australia for a one-year period (January 2013 to January 2014)...
2017: PloS One
https://www.readbyqxmd.com/read/28427211/association-of-brm-promoter-polymorphisms-and-esophageal-adenocarcinoma-outcome
#19
Grzegorz J Korpanty, Lawson Eng, Xin Qiu, Olusola Olusesan Faluyi, Daniel J Renouf, Dangxiao Cheng, Devalben Patel, Zhuo Chen, Brandon C Tse, Jennifer J Knox, Lorin Dodbiba, Jennifer Teichman, Abul Kalam Azad, Rebecca Wong, Gail Darling, David Reisman, Sinead Cuffe, Geoffrey Liu, Wei Xu
PURPOSE: Brahma (BRM) is a critical catalytic subunit of the SWI/SNF chromatin remodeling complex; expression of BRM is commonly lost in various cancer types. BRM promoter polymorphisms (BRM-741; BRM-1321) are associated with loss of BRM expression, and with cancer risk/survival. We evaluated these two polymorphisms in the overall survival (OS) of esophageal adenocarcinoma (EAC) patients. RESULTS: Of 270 patients, 37% were stage IV. Minor allele frequencies were 47-49%; 15% were double-homozygotes...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412474/kinetics-for-drug-discovery-an-industry-driven-effort-to-target-drug-residence-time
#20
REVIEW
Doris A Schuetz, Wilhelmus Egbertus Arnout de Witte, Yin Cheong Wong, Bernhard Knasmueller, Lars Richter, Daria B Kokh, S Kashif Sadiq, Reggie Bosma, Indira Nederpelt, Laura H Heitman, Elena Segala, Marta Amaral, Dong Guo, Dorothee Andres, Victoria Georgi, Leigh A Stoddart, Steve Hill, Robert M Cooke, Chris De Graaf, Rob Leurs, Matthias Frech, Rebecca C Wade, Elizabeth Cunera Maria de Lange, Adriaan P IJzerman, Anke Müller-Fahrnow, Gerhard F Ecker
A considerable number of approved drugs show non-equilibrium binding characteristics, emphasizing the potential role of drug residence times for in vivo efficacy. Therefore, a detailed understanding of the kinetics of association and dissociation of a target-ligand complex might provide crucial insight into the molecular mechanism-of-action of a compound. This deeper understanding will help to improve decision making in drug discovery, thus leading to a better selection of interesting compounds to be profiled further...
April 13, 2017: Drug Discovery Today
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