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Matthew Stephens

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https://www.readbyqxmd.com/read/29331346/predicting-low-resource-intensity-emergency-department-visits-in-children
#1
Margaret Samuels-Kalow, Alon Peltz, Jonathan Rodean, Matthew Hall, Elizabeth R Alpern, Paul L Aronson, Jay G Berry, Kathy N Shaw, Rustin B Morse, Stephen B Freedman, Eyal Cohen, Harold K Simon, Samir S Shah, Yiannis Katsogridakis, Mark I Neuman
BACKGROUND AND OBJECTIVES: Interventions to reduce frequent emergency department (ED) use in children are often limited by the inability to predict future risk. We sought to develop a population-based model for predicting Medicaid-insured children at risk for high frequency of low-resource intensity (LRI) ED visits. METHODS: Retrospective cohort analysis of Medicaid-insured children (age 1-18 years) included in the MarketScan® Medicaid database with ≥1 ED visit(s) in 2013...
January 10, 2018: Academic Pediatrics
https://www.readbyqxmd.com/read/29331271/the-durability-of-operational-improvements-with-rotational-patient-assignment
#2
Stephen J Traub, Soroush Saghafian, Adam C Bartley, Matthew R Buras, Christopher F Stewart, Brian T Kruse
INTRODUCTION: Previous work has suggested that Emergency Department rotational patient assignment (a system in which patients are algorithmically assigned to physicians) is associated with immediate (first-year) improvements in operational metrics. We sought to determine if these improvements persisted over a longer follow-up period. METHODS: Single-site, retrospective analysis focused on years 2-4 post-implementation (follow-up) of a rotational patient assignment system...
December 20, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29329938/pipeline-to-gene-discovery-analysing-familial-parkinsonism-in-the-queensland-parkinson-s-project
#3
Steven R Bentley, Stephanie Bortnick, Ilaria Guella, Javed Y Fowdar, Peter A Silburn, Stephen A Wood, Matthew J Farrer, George D Mellick
INTRODUCTION: Family based study designs provide an informative resource to identify disease-causing mutations. The Queensland Parkinson's Project (QPP) has been involved in numerous genetic screening studies; however, details of the families enrolled into the register have not been comprehensively reported. This article characterises the families enrolled in the QPP and summarises monogenic forms of hereditary Parkinsonism found in the register. METHOD: The presence of pathogenic point mutations and copy number variations (CNVs) were, generally, screened in a sample of over 1000 PD patients from the total of 1725...
January 3, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29329922/a-multistate-investigation-of-health-care-associated-burkholderia-cepacia-complex-infections-related-to-liquid-docusate-sodium-contamination-january-october-2016
#4
Janet Glowicz, Matthew Crist, Carolyn Gould, Heather Moulton-Meissner, Judith Noble-Wang, Tom J B de Man, K Allison Perry, Zachary Miller, William C Yang, Stephen Langille, Jessica Ross, Bobbiejean Garcia, Janice Kim, Erin Epson, Stephanie Black, Massimo Pacilli, John J LiPuma, Ryan Fagan
BACKGROUND: Outbreaks of health care-associated infections (HAIs) caused by Burkholderia cepacia complex (Bcc) have been associated with medical devices and water-based products. Water is the most common raw ingredient in nonsterile liquid drugs, and the significance of organisms recovered from microbiologic testing during manufacturing is assessed using a risk-based approach. This incident demonstrates that lapses in manufacturing practices and quality control of nonsterile liquid drugs can have serious unintended consequences...
January 9, 2018: American Journal of Infection Control
https://www.readbyqxmd.com/read/29324083/effects-of-napping-during-shift-work-on-sleepiness-and-performance-in-emergency-medical-services-personnel-and-similar-shift-workers-a-systematic-review-and-meta-analysis
#5
Christian Martin-Gill, Laura K Barger, Charity G Moore, J Stephen Higgins, Ellen M Teasley, Patricia M Weiss, Joseph P Condle, Katharyn L Flickinger, Patrick J Coppler, Denisse J Sequeira, Ayushi A Divecha, Margaret E Matthews, Eddy S Lang, P Daniel Patterson
BACKGROUND: Scheduled napping during work shifts may be an effective way to mitigate fatigue-related risk. This study aimed to critically review and synthesize existing literature on the impact of scheduled naps on fatigue-related outcomes for EMS personnel and similar shift worker groups. METHODS: A systematic literature review was performed of the impact of a scheduled nap during shift work on EMS personnel or similar shift workers. The primary (critical) outcome of interest was EMS personnel safety...
January 11, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29324079/shorter-versus-longer-shift-durations-to-mitigate-fatigue-and-fatigue-related-risks-in-emergency-medical-services-personnel-and-related-shift-workers-a-systematic-review
#6
P Daniel Patterson, Michael S Runyon, J Stephen Higgins, Matthew D Weaver, Ellen M Teasley, Andrew J Kroemer, Margaret E Matthews, Brett R Curtis, Katharyn L Flickinger, Xiaoshuang Xun, Zhadyra Bizhanova, Patricia M Weiss, Joseph P Condle, Megan L Renn, Denisse J Sequeira, Patrick J Coppler, Eddy S Lang, Christian Martin-Gill
BACKGROUND: This study comprehensively reviewed the literature on the impact of shorter versus longer shifts on critical and important outcomes for Emergency Medical Services (EMS) personnel and related shift worker groups. METHODS: Six databases (e.g., PubMed/MEDLINE) were searched, including one website. This search was guided by a research question developed by an expert panel a priori and registered with the PROSPERO database of systematic reviews (2016:CRD42016040099)...
January 11, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29324068/reliability-and-validity-of-survey-instruments-to-measure-work-related-fatigue-in-the-emergency-medical-services-setting-a-systematic-review
#7
P Daniel Patterson, Matthew D Weaver, Anthony Fabio, Ellen M Teasley, Megan L Renn, Brett R Curtis, Margaret E Matthews, Andrew J Kroemer, Xiaoshuang Xun, Zhadyra Bizhanova, Patricia M Weiss, Denisse J Sequeira, Patrick J Coppler, Eddy S Lang, J Stephen Higgins
BACKGROUND: This study sought to systematically search the literature to identify reliable and valid survey instruments for fatigue measurement in the Emergency Medical Services (EMS) occupational setting. METHODS: A systematic review study design was used and searched six databases, including one website. The research question guiding the search was developed a priori and registered with the PROSPERO database of systematic reviews: "Are there reliable and valid instruments for measuring fatigue among EMS personnel?" (2016:CRD42016040097)...
January 11, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29323751/-18-f-av-1451-clustering-of-entorhinal-and-cortical-uptake-in-alzheimer-s-disease
#8
Jennifer L Whitwell, Jonathan Graff-Radford, Nirubol Tosakulwong, Stephen D Weigand, Mary Machulda, Matthew L Senjem, Christopher G Schwarz, Anthony J Spychalla, David T Jones, Daniel A Drubach, David S Knopman, Bradley F Boeve, Nilüfer Ertekin-Taner, Ronald C Petersen, Val J Lowe, Clifford R Jack, Keith A Josephs
OBJECTIVE: To use a cluster analysis of [18 F]AV-1451 tau-PET data to determine how subjects with Alzheimer's disease vary in the relative involvement of the entorhinal cortex and neocortex, and determine whether relative involvement of these two regions can help explain variability in age and clinical phenotype in Alzheimer's disease. METHODS: We calculated [18 F]AV-1451 uptake in entorhinal cortex and neocortex in 62 amyloid-positive Alzheimer's disease patients (39 typical and 23 atypical presentation)...
January 11, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29323667/making-new-genetic-diagnoses-with-old-data-iterative-reanalysis-and-reporting-from-genome-wide-data-in-1-133-families-with-developmental-disorders
#9
Caroline F Wright, Jeremy F McRae, Stephen Clayton, Giuseppe Gallone, Stuart Aitken, Tomas W FitzGerald, Philip Jones, Elena Prigmore, Diana Rajan, Jenny Lord, Alejandro Sifrim, Rosemary Kelsell, Michael J Parker, Jeffrey C Barrett, Matthew E Hurles, David R FitzPatrick, Helen V Firth
PurposeGiven the rapid pace of discovery in rare disease genomics, it is likely that improvements in diagnostic yield can be made by systematically reanalyzing previously generated genomic sequence data in light of new knowledge.MethodsWe tested this hypothesis in the United Kingdom-wide Deciphering Developmental Disorders study, where in 2014 we reported a diagnostic yield of 27% through whole-exome sequencing of 1,133 children with severe developmental disorders and their parents. We reanalyzed existing data using improved variant calling methodologies, novel variant detection algorithms, updated variant annotation, evidence-based filtering strategies, and newly discovered disease-associated genes...
January 11, 2018: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29318985/a-randomised-controlled-trial-and-economic-evaluation-of-intraoperative-cell-salvage-during-caesarean-section-in-women-at-risk-of-haemorrhage-the-salvo-cell-salvage-in-obstetrics-trial
#10
Khalid S Khan, Philip Moore, Matthew Wilson, Richard Hooper, Shubha Allard, Ian Wrench, Tracy Roberts, Carol McLoughlin, Lee Beresford, James Geoghegan, Jane Daniels, Sue Catling, Vicki A Clark, Paul Ayuk, Stephen Robson, Fang Gao-Smith, Matthew Hogg, Louise Jackson, Doris Lanz, Julie Dodds
BACKGROUND: Caesarean section is associated with blood loss and maternal morbidity. Excessive blood loss requires transfusion of donor (allogeneic) blood, which is a finite resource. Cell salvage returns blood lost during surgery to the mother. It may avoid the need for donor blood transfusion, but reliable evidence of its effects is lacking. OBJECTIVES: To determine if routine use of cell salvage during caesarean section in mothers at risk of haemorrhage reduces the rates of blood transfusion and postpartum maternal morbidity, and is cost-effective, in comparison with standard practice without routine salvage use...
January 2018: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29316935/estimating-the-returns-to-united-kingdom-publicly-funded-musculoskeletal-disease-research-in-terms-of-net-value-of-improved-health-outcomes
#11
Matthew Glover, Erin Montague, Alexandra Pollitt, Susan Guthrie, Stephen Hanney, Martin Buxton, Jonathan Grant
BACKGROUND: Building on an approach applied to cardiovascular and cancer research, we estimated the economic returns from United Kingdom public- and charitable-funded musculoskeletal disease (MSD) research that arise from the net value of the improved health outcomes in the United Kingdom. METHODS: To calculate the economic returns from MSD-related research in the United Kingdom, we estimated (1) the public and charitable expenditure on MSD-related research in the United Kingdom between 1970 and 2013; (2) the net monetary benefit (NMB), derived from the health benefit in quality adjusted life years (QALYs) valued in monetary terms (using a base-case value of a QALY of £25,000) minus the cost of delivering that benefit, for a prioritised list of interventions from 1994 to 2013; (3) the proportion of NMB attributable to United Kingdom research; and (4) the elapsed time between research funding and health gain...
January 10, 2018: Health Research Policy and Systems
https://www.readbyqxmd.com/read/29316019/cell-cycle-dynamics-of-cultured-coral-endosymbiotic-microalgae-symbiodinium-across-different-types-species-under-alternate-light-and-temperature-conditions
#12
Lisa Fujise, Matthew R Nitschke, Jörg C Frommlet, João Serôdio, Stephen Woodcock, Peter J Ralph, David J Suggett
Dinoflagellates of the genus Symbiodinium live in symbiosis with many invertebrates, including reef-building corals. Hosts maintain this symbiosis through continuous regulation of Symbiodinium cell density via expulsion and degradation (post-mitotic) and/or constraining cell growth and division through manipulation of the symbiont cell cycle (pre-mitotic). Importance of pre-mitotic regulation is unknown since little data exists on cell cycles for the immense genetic diversity of Symbiodinium. We therefore examined cell cycle progression for several distinct Symbiodinium ITS2-types (B1, C1, D1a)...
January 8, 2018: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/29315625/concentrated-disadvantage-residential-instability-and-the-home-environment-for-preschoolers
#13
Emily M May, Sandra T Azar, Stephen A Matthews
Living in a disadvantaged neighborhood is associated with heightened risk for poor school readiness and health outcomes in early childhood, and the home environment is thought to be a primary mechanism by which neighborhood context impacts preschoolers. This study examined the effects of neighborhood concentrated disadvantage and neighborhood residential instability on the home physical environment and home learning environment for preschoolers in economically disadvantaged families (N = 187). Using structural equation modeling, mothers' perceived neighborhood disorder and depressive symptoms were examined as mechanisms by which neighborhood context "comes through the door...
January 9, 2018: American Journal of Community Psychology
https://www.readbyqxmd.com/read/29310490/harnessing-electronic-medical-records-to-advance-research-on-multiple-sclerosis
#14
Vincent Damotte, Antoine Lizée, Matthew Tremblay, Alisha Agrawal, Pouya Khankhanian, Adam Santaniello, Refujia Gomez, Robin Lincoln, Wendy Tang, Tiffany Chen, Nelson Lee, Pablo Villoslada, Jill A Hollenbach, Carolyn D Bevan, Jennifer Graves, Riley Bove, Douglas S Goodin, Ari J Green, Sergio E Baranzini, Bruce Ac Cree, Roland G Henry, Stephen L Hauser, Jeffrey M Gelfand, Pierre-Antoine Gourraud
BACKGROUND: Electronic medical records (EMR) data are increasingly used in research, but no studies have yet evaluated similarity between EMR and research-quality data and between characteristics of an EMR multiple sclerosis (MS) population and known natural MS history. OBJECTIVES: To (1) identify MS patients in an EMR system and extract clinical data, (2) compare EMR-extracted data with gold-standard research data, and (3) compare EMR MS population characteristics to expected MS natural history...
January 1, 2018: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29304364/systematic-review-of-health-related-quality-of-life-and-patient-reported-outcome-measures-in-gestational-trophoblastic-disease-a-parallel-synthesis-approach
#15
REVIEW
Jane Ireson, Georgina Jones, Matthew C Winter, Stephen C Radley, Barry W Hancock, John A Tidy
Gestational trophoblastic disease is a rare complication of pregnancy that can develop into cancer. Medical outcomes of gestational trophoblastic disease are well researched, but the effect of the disease on health-related quality of life (HRQOL) requires attention if care is to be improved. This systematic review was designed to establish the effect of gestational trophoblastic disease and its treatment on HRQOL and to identify the appropriateness of HRQOL measures. Quantitative studies found HRQOL in long-term survivors of gestational trophoblastic disease to be at or above population norms...
January 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29304282/dual-allosteric-inhibition-of-shp2-phosphatase
#16
Michelle Fodor, Edmund Price, Ping Wang, Hengyu Lu, Andreea Argintaru, Zhouliang Chen, Meir Glick, Huai-Xiang Hao, Mitsunori Kato, Robert Koenig, Jonathan R LaRochelle, Gang Liu, Eric McNeill, Dyuti Majumdar, Gisele A Nishiguchi, Lawrence B Perez, Gregory Paris, Christopher M Quinn, Timothy Ramsey, Martin Sendzik, Michael David Shultz, Sarah L Williams, Travis Stams, Stephen C Blacklow, Michael G Acker, Matthew J LaMarche
SHP2 is a cytoplasmic protein tyrosine phosphatase encoded by the PTPN11 gene and is involved in cell proliferation, differentiation, and survival. Recently we reported an allosteric mechanism of inhibition that stabilizes the auto-inhibited conformation of SHP2. SHP099 (1) was identified and characterized as a moderately potent, orally bioavailable, allosteric small molecule inhibitor, which binds to a tunnel-like pocket formed by the confluence of three domains of SHP2. In this report, we describe further screening strategies that enabled the identification of a second, distinct small molecule allosteric site...
January 5, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29301960/genomic-correlates-of-response-to-immune-checkpoint-therapies-in-clear-cell-renal-cell-carcinoma
#17
Diana Miao, Claire A Margolis, Wenhua Gao, Martin H Voss, Wei Li, Dylan J Martini, Craig Norton, Dominick Bossé, Stephanie M Wankowicz, Dana Cullen, Christine Horak, Megan Wind-Rotolo, Adam Tracy, Marios Giannakis, Frank Stephen Hodi, Charles G Drake, Mark W Ball, Mohamad E Allaf, Alexandra Snyder, Matthew D Hellmann, Thai Ho, Robert J Motzer, Sabina Signoretti, William G Kaelin, Toni K Choueiri, Eliezer M Van Allen
Immune checkpoint inhibitors targeting the programmed cell death-1 receptor (PD-1) improve survival in a subset of patients with clear cell renal cell carcinoma (ccRCC). To identify genomic alterations in ccRCC that correlate with response to anti-PD-1 monotherapy, we performed whole exome sequencing of metastatic ccRCC from 35 patients. We found that clinical benefit was associated with loss-of-function mutations in the PBRM1 gene (p=0.012), which encodes a subunit of a SWI/SNF chromatin remodeling complex (the PBAF subtype)...
January 4, 2018: Science
https://www.readbyqxmd.com/read/29301585/a-randomised-pragmatic-trial-of-corticosteroid-optimization-in-severe-asthma-using-a-composite-biomarker-algorithm-to-adjust-corticosteroid-dose-versus-standard-care-study-protocol-for-a-randomised-trial
#18
Catherine E Hanratty, John G Matthews, Joseph R Arron, David F Choy, Ian D Pavord, P Bradding, Christopher E Brightling, Rekha Chaudhuri, Douglas C Cowan, Ratko Djukanovic, Nicola Gallagher, Stephen J Fowler, Tim C Hardman, Tim Harrison, Cécile T Holweg, Peter H Howarth, James Lordan, Adel H Mansur, Andrew Menzies-Gow, Sofia Mosesova, Robert M Niven, Douglas S Robinson, Dominick E Shaw, Samantha Walker, Ashley Woodcock, Liam G Heaney
BACKGROUND: Patients with difficult-to-control asthma consume 50-60% of healthcare costs attributed to asthma and cost approximately five-times more than patients with mild stable disease. Recent evidence demonstrates that not all patients with asthma have a typical type 2 (T2)-driven eosinophilic inflammation. These asthmatics have been called 'T2-low asthma' and have a minimal response to corticosteroid therapy. Adjustment of corticosteroid treatment using sputum eosinophil counts from induced sputum has demonstrated reduced severe exacerbation rates and optimized corticosteroid dose...
January 4, 2018: Trials
https://www.readbyqxmd.com/read/29300474/identification-of-morpholino-2h-pyrido-3-2-b-1-4-oxazin-3-4h-ones-as-non-steroidal-mineralocorticoid-antagonists
#19
David W Piotrowski, Kentaro Futatsugi, Agustin Casimiro-Garcia, Liuqing Wei, Matthew Sammons, Michael Herr, Wenhua Jiao, Sophie Y Lavergne, Steven B Coffey, Stephen W Wright, Kun Song, Paula M Loria, Mary Ellen Banker, Donna N Petersen, Jonathan Bauman
A novel series of morpholine-based non-steroidal mineralocorticoid receptor antagonists is reported. Starting from a pyrrolidine HTS hit 9 that possessed modest potency but excellect selectivity versus related nuclear hormone receptors, a series of libraries led to identification of morpholine lead 10. After further optimization, cis disubstituted morpholine 22 was discovered, which showed a 45-fold boost in binding affinity and corresponding functional potency compared to 13. While 22 had high clearance in rat, it provided sufficient exposure at high doses to favorably assess in vivo efficacy (increased urinary Na+/K+ ratio) and safety...
January 4, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29299998/myeloid-cell-recruitment-versus-local-proliferation-differentiates-susceptibility-from-resistance-to-filarial-infection
#20
Sharon M Campbell, Johanna A Knipper, Dominik Ruckerl, Conor M Finlay, Nicola Logan, Carlos M Minutti, Matthias Mack, Stephen J Jenkins, Matthew D Taylor, Judith E Allen
Both TH2-dependent helminth killing and suppression of the TH2 effector response have been attributed to macrophages (MΦ) activated by IL-4 (M(IL-4)). To investigate how M(IL-4) contribute to diverse infection outcomes, the MΦ compartment of susceptible BALB/c mice and more resistant C57BL/6 mice was profiled during infection of the pleural cavity with the filarial nematode, Litomosoides sigmodontis. C57BL/6 mice exhibited a profoundly expanded resident MΦ (resMΦ) population, which was gradually replenished from the bone marrow in an age-dependent manner...
January 4, 2018: ELife
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