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Roger Reeves

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https://www.readbyqxmd.com/read/28217086/increased-sparsity-of-hippocampal-ca1-neuronal-ensembles-in-a-mouse-model-of-down-syndrome-assayed-by-arc-expression
#1
Constance L Smith-Hicks, Peiling Cai, Alena V Savonenko, Roger H Reeves, Paul F Worley
Down syndrome (DS) is the leading chromosomal cause of intellectual disability, yet the neural substrates of learning and memory deficits remain poorly understood. Here, we interrogate neural networks linked to learning and memory in a well-characterized model of DS, the Ts65Dn mouse. We report that Ts65Dn mice exhibit exploratory behavior that is not different from littermate wild-type (WT) controls yet behavioral activation of Arc mRNA transcription in pyramidal neurons of the CA1 region of the hippocampus is altered in Ts65Dn mice...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28137862/dyrk1a-regulates-hap1-dcaf7-wdr68-binding-with-implication-for-delayed-growth-in-down-syndrome
#2
Jianxing Xiang, Su Yang, Ning Xin, Marta A Gaertig, Roger H Reeves, Shihua Li, Xiao-Jiang Li
Huntingtin-associated protein 1 (Hap1) is known to be critical for postnatal hypothalamic function and growth. Hap1 forms stigmoid bodies (SBs), unique neuronal cytoplasmic inclusions of unknown function that are enriched in hypothalamic neurons. Here we developed a simple strategy to isolate the SB-enriched fraction from mouse brain. By analyzing Hap1 immunoprecipitants from this fraction, we identified a Hap1-interacting SB component, DDB1 and CUL4 associated factor 7 (Dcaf7)/WD40 repeat 68 (WDR68), whose protein level and nuclear translocation are regulated by Hap1...
January 30, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28135839/delivering-successful-randomized-controlled-trials-in-surgery-methods-to-optimize-collaboration-and-study-design
#3
Natalie S Blencowe, Jonathan A Cook, Thomas Pinkney, Chris Rogers, Barnaby C Reeves, Jane M Blazeby
Randomized controlled trials in surgery are notoriously difficult to design and conduct due to numerous methodological and cultural challenges. Over the last 5 years, several UK-based surgical trial-related initiatives have been funded to address these issues. These include the development of Surgical Trials Centers and Surgical Specialty Leads (individual surgeons responsible for championing randomized controlled trials in their specialist fields), both funded by the Royal College of Surgeons of England; networks of research-active surgeons in training; and investment in methodological research relating to surgical randomized controlled trials (to address issues such as recruitment, blinding, and the selection and standardization of interventions)...
January 1, 2017: Clinical Trials: Journal of the Society for Clinical Trials
https://www.readbyqxmd.com/read/28094841/phase-2-randomized-double-blind-study-of-pracinostat-in-combination-with-azacitidine-in-patients-with-untreated-higher-risk-myelodysplastic-syndromes
#4
Guillermo Garcia-Manero, Guillermo Montalban-Bravo, Jesus G Berdeja, Yasmin Abaza, Elias Jabbour, James Essell, Roger M Lyons, Farhad Ravandi, Michael Maris, Brian Heller, Amy E DeZern, Sunil Babu, David Wright, Bertrand Anz, Ralph Boccia, Rami S Komrokji, Philip Kuriakose, James Reeves, Mikkael A Sekeres, Hagop M Kantarjian, Richard Ghalie, Gail J Roboz
BACKGROUND: The prognosis of patients with higher risk myelodysplastic syndromes (MDS) remains poor despite available therapies. Histone deacetylase inhibitors have demonstrated activity in patients with MDS and in vitro synergy with azacitidine. METHODS: A phase 2 randomized, placebo-controlled clinical trial of azacitidine and pracinostat was conducted in patients who had International Prognostic Scoring System intermediate-2-risk or high-risk MDS. The primary endpoint was the complete response (CR) rate by cycle 6 of therapy...
January 17, 2017: Cancer
https://www.readbyqxmd.com/read/28031211/model-based-cost-effectiveness-analysis-of-b-type-natriuretic-peptide-guided-care-in-patients-with-heart-failure
#5
Syed Mohiuddin, Barnaby Reeves, Maria Pufulete, Rachel Maishman, Mark Dayer, John Macleod, Theresa McDonagh, Sarah Purdy, Chris Rogers, William Hollingworth
OBJECTIVE: Monitoring B-type natriuretic peptide (BNP) to guide pharmacotherapy might improve survival in patients with heart failure with reduced ejection fraction (HFrEF) or preserved ejection fraction (HFpEF). However, the cost-effectiveness of BNP-guided care is uncertain and guidelines do not uniformly recommend it. We assessed the cost-effectiveness of BNP-guided care in patient subgroups defined by age and ejection fraction. METHODS: We used a Markov model with a 3-month cycle length to estimate the lifetime health service costs, quality-adjusted life years (QALYs) and incremental net monetary benefits (iNMBs) of BNP-guided versus clinically guided care in 3 patient subgroups: (1) HFrEF patients <75 years; (2) HFpEF patients <75 years; and (3) HFrEF patients ≥75 years...
December 28, 2016: BMJ Open
https://www.readbyqxmd.com/read/27973035/a-model-based-cost-effectiveness-analysis-of-b-type-natriuretic-peptide-monitoring-in-patients-with-heart-failure
#6
S Mohiuddin, W Hollingworth, R Maishman, M Dayer, J MacLeod, T McDonagh, S Purdy, B Reeves, C Rogers, M Pufulete
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/27898680/a-core-outcome-set-for-the-benefits-and-adverse-events-of-bariatric-and-metabolic-surgery-the-bariact-project
#7
Karen D Coulman, James Hopkins, Sara T Brookes, Katy Chalmers, Barry Main, Amanda Owen-Smith, Robert C Andrews, James Byrne, Jenny L Donovan, Graziella Mazza, Barnaby C Reeves, Chris A Rogers, Janice L Thompson, Richard Welbourn, Sarah Wordsworth, Jane M Blazeby
BACKGROUND: Bariatric and metabolic surgery is used as a treatment for patients with severe and complex obesity. However, there is a need to improve outcome selection and reporting in bariatric surgery trials. A Core Outcome Set (COS), an agreed minimum set of outcomes reported in all studies of a specific condition, may achieve this. Here, we present the development of a COS for BARIAtric and metabolic surgery Clinical Trials-the BARIACT Study. METHODS AND FINDINGS: Outcomes identified from systematic reviews and patient interviews informed a questionnaire survey...
November 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27867340/changing-paradigms-in-down-syndrome-the-first-international-conference-of-the-trisomy-21-research-society
#8
Jean-Maurice Delabar, Bernadette Allinquant, Diana Bianchi, Tom Blumenthal, Alain Dekker, Jamie Edgin, John O'Bryan, Mara Dierssen, Marie-Claude Potier, Frances Wiseman, Faycal Guedj, Nicole Créau, Roger Reeves, Katheleen Gardiner, Jorge Busciglio
Down syndrome (DS) is the most common genetic cause of intellectual disability (ID) in humans with an incidence of ∼1:1,000 live births worldwide. It is caused by the presence of an extra copy of all or a segment of the long arm of human chromosome 21 (trisomy 21). People with DS present with a constellation of phenotypic alterations involving most organs and organ systems. ID is present in all people with DS, albeit with variable severity. DS is also the most frequent genetic cause of Alzheimer's disease (AD), and ∼50% of those with DS will develop AD-related dementia...
October 2016: Molecular Syndromology
https://www.readbyqxmd.com/read/27859268/heterogeneity-of-colorectal-cancer-risk-by-tumour-characteristics-large-prospective-study-of-uk-women
#9
Andrea Burón Pust, Rupert Alison, Roger Blanks, Kirstin Pirie, Kezia Gaitskell, Isobel Barnes, Toral Gathani, Gillian Reeves, Valerie Beral, Jane Green
Associations between behavioural and other personal factors and colorectal cancer risk have been reported to vary by tumour characteristics, but evidence is inconsistent. In a large UK-based prospective study we examined associations of 14 postulated risk factors with colorectal cancer risk overall, and across three anatomical sites and four morphological subtypes. Among 1.3 million women, 18,518 incident colorectal cancers were identified during 13.8 (SD 3.4) years follow-up via record linkage to national cancer registry data...
March 1, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27809956/the-effectiveness-cost-effectiveness-and-acceptability-of-community-versus-hospital-eye-service-follow-up-for-patients-with-neovascular-age-related-macular-degeneration-with-quiescent-disease-echoes-a-virtual-randomised-balanced-incomplete-block-trial
#10
Barnaby C Reeves, Lauren J Scott, Jodi Taylor, Ruth Hogg, Chris A Rogers, Sarah Wordsworth, Daisy Townsend, Alyson Muldrew, Tunde Peto, Mara Violato, Helen Dakin, Heike Cappel-Porter, Nicola Mills, Dermot O'Reilly, Simon P Harding, Usha Chakravarthy
BACKGROUND: Patients with neovascular age-related macular degeneration (nAMD) usually attend regular reviews, even when the disease is quiescent. Reviews are burdensome to health services, patients and carers. OBJECTIVES: To compare the proportion of correct lesion classifications made by community-based optometrists and ophthalmologists from vignettes of patients; to estimate the cost-effectiveness of community follow-up by optometrists compared with follow-up by ophthalmologists in the Hospital Eye Service (HES); to ascertain views of patients, their representatives, optometrists, ophthalmologists and clinical commissioners on the proposed shared care model...
October 2016: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/27797985/cost-effectiveness-of-community-versus-hospital-eye-service-follow-up-for-patients-with-quiescent-treated-age-related-macular-degeneration-alongside-the-echoes-randomised-trial
#11
M Violato, H Dakin, U Chakravarthy, B C Reeves, T Peto, R E Hogg, S P Harding, L J Scott, J Taylor, H Cappel-Porter, N Mills, D O'Reilly, C A Rogers, S Wordsworth
OBJECTIVES: To assess the cost-effectiveness of optometrist-led follow-up monitoring reviews for patients with quiescent neovascular age-related macular degeneration (nAMD) in community settings (including high street opticians) compared with ophthalmologist-led reviews in hospitals. DESIGN: A model-based cost-effectiveness analysis with a 4-week time horizon, based on a 'virtual' non-inferiority randomised trial designed to emulate a parallel group design. SETTING: A virtual internet-based clinical assessment, conducted at community optometry practices, and hospital ophthalmology clinics...
October 24, 2016: BMJ Open
https://www.readbyqxmd.com/read/27768292/tuning-the-band-bending-and-controlling-the-surface-reactivity-at-polar-and-nonpolar-surfaces-of-zno-through-phosphonic-acid-binding
#12
Alexandra R McNeill, Adam R Hyndman, Roger J Reeves, Alison J Downard, Martin W Allen
ZnO is a prime candidate for future use in transparent electronics; however, development of practical materials requires attention to factors including control of its unusual surface band bending and surface reactivity. In this work, we have modified the O-polar (0001̅), Zn-polar (0001), and m-plane (101̅0) surfaces of ZnO with phosphonic acid (PA) derivatives and measured the effect on the surface band bending and surface sensitivity to atmospheric oxygen. Core level and valence band synchrotron X-ray photoemission spectroscopy was used to measure the surface band bending introduced by PA modifiers with substituents of opposite polarity dipole moment: octadecylphosphonic acid (ODPA) and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctylphosphonic acid (F13OPA)...
November 16, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27746614/urinary-metabotyping-of-hepatocellular-carcinoma-in-a-uk-cohort-using-proton-nuclear-magnetic-resonance-spectroscopy
#13
Mohamed I F Shariff, Jin U Kim, Nimzing G Ladep, Mary M E Crossey, Larry K Koomson, Abigail Zabron, Helen Reeves, Matthew Cramp, Stephen Ryder, Shaun Greer, I Jane Cox, Roger Williams, Elaine Holmes, Kathryn Nash, Simon D Taylor-Robinson
BACKGROUND: Discriminatory metabolic profiles have been described in urinary (1)H nuclear magnetic resonance (NMR) spectroscopy studies of African patients with hepatocellular carcinoma (HCC). This study aimed to assess similarities in a UK cohort, where there is a greater etiological diversity. METHODS: Urine from cirrhosis and HCC patients was analyzed using a 600 MHz (1)H NMR system. Multivariate analysis and median group MR spectra comparison identified metabolite alterations between groups...
September 2016: Journal of Clinical and Experimental Hepatology
https://www.readbyqxmd.com/read/27697605/design-and-implementation-of-the-airways-2-trial-a-multi-centre-cluster-randomised-controlled-trial-of-the-clinical-and-cost-effectiveness-of-the-i-gel-supraglottic-airway-device-versus-tracheal-intubation-in-the-initial-airway-management-of-out-of-hospital
#14
Jodi Taylor, Sarah Black, Stephen J Brett, Kim Kirby, Jerry P Nolan, Barnaby C Reeves, Maria Robinson, Chris A Rogers, Lauren J Scott, Adrian South, Elizabeth A Stokes, Matthew Thomas, Sarah Voss, Sarah Wordsworth, Jonathan R Benger
Health outcomes after out of hospital cardiac arrest (OHCA) are extremely poor, with only 7-9% of patients in the United Kingdom (UK) surviving to hospital discharge. Currently emergency medical services (EMS) use either tracheal intubation or newer supraglottic airway devices (SGAs) to provide advanced airway management during OHCA. Equipoise between the two techniques has led to calls for a well-designed randomised controlled trial. The primary objective of the AIRWAYS-2 trial is to assess whether the clinical effectiveness of the i-gel, a second-generation SGA, is superior to tracheal intubation in the initial airway management of OHCA patients in the UK...
December 2016: Resuscitation
https://www.readbyqxmd.com/read/27648982/the-healthcare-costs-of-heart-failure-during-the-last-five-years-of-life-a-retrospective-cohort-study
#15
William Hollingworth, Mousumi Biswas, Rachel L Maishman, Mark J Dayer, Theresa McDonagh, Sarah Purdy, Barnaby C Reeves, Chris A Rogers, Rachael Williams, Maria Pufulete
BACKGROUND: Evidence on the economic impact of heart failure (HF) is vital in order to predict the cost-effectiveness of novel interventions. We estimate the health system costs of HF during the last five years of life. METHODS: We used linked primary care and mortality data accessed through the Clinical Practice Research Datalink (CPRD) to identify 1555 adults in England who died with HF in 2012/13. We used CPRD and linked Hospital Episode Statistics to estimate the cost of medications, primary and hospital healthcare...
December 1, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27527344/a-multicentre-randomised-controlled-trial-of-transfusion-indication-threshold-reduction-on-transfusion-rates-morbidity-and-health-care-resource-use-following-cardiac-surgery-titre2
#16
Barnaby C Reeves, Katie Pike, Chris A Rogers, Rachel Cm Brierley, Elizabeth A Stokes, Sarah Wordsworth, Rachel L Nash, Alice Miles, Andrew D Mumford, Alan Cohen, Gianni D Angelini, Gavin J Murphy
BACKGROUND: Uncertainty about optimal red blood cell transfusion thresholds in cardiac surgery is reflected in widely varying transfusion rates between surgeons and cardiac centres. OBJECTIVE: To test the hypothesis that a restrictive compared with a liberal threshold for red blood cell transfusion after cardiac surgery reduces post-operative morbidity and health-care costs. DESIGN: Multicentre, parallel randomised controlled trial and within-trial cost-utility analysis from a UK NHS and Personal Social Services perspective...
August 2016: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/27523088/training-for-impact-the-socio-economic-impact-of-a-fit-for-purpose-health-workforce-on-communities
#17
Björg Pálsdóttir, Jean Barry, Andreia Bruno, Hugh Barr, Amy Clithero, Nadia Cobb, Jan De Maeseneer, Elsie Kiguli-Malwadde, André-Jacques Neusy, Scott Reeves, Roger Strasser, Paul Worley
Across the globe, a "fit for purpose" health professional workforce is needed to meet health needs and challenges while capitalizing on existing resources and strengths of communities. However, the socio-economic impact of educating and deploying a fit for purpose health workforce can be challenging to evaluate. In this paper, we provide a brief overview of six promising strategies and interventions that provide context-relevant health professional education within the health system. The strategies focused on in the paper are:1...
2016: Human Resources for Health
https://www.readbyqxmd.com/read/27401357/effectiveness-of-community-versus-hospital-eye-service-follow-up-for-patients-with-neovascular-age-related-macular-degeneration-with-quiescent-disease-echoes-a-virtual-non-inferiority-trial
#18
Barnaby C Reeves, Lauren J Scott, Jodi Taylor, Simon P Harding, Tunde Peto, Alyson Muldrew, Ruth E Hogg, Sarah Wordsworth, Nicola Mills, Dermot O'Reilly, Chris A Rogers, Usha Chakravarthy
OBJECTIVES: To compare the ability of ophthalmologists versus optometrists to correctly classify retinal lesions due to neovascular age-related macular degeneration (nAMD). DESIGN: Randomised balanced incomplete block trial. Optometrists in the community and ophthalmologists in the Hospital Eye Service classified lesions from vignettes comprising clinical information, colour fundus photographs and optical coherence tomographic images. Participants' classifications were validated against experts' classifications (reference standard)...
2016: BMJ Open
https://www.readbyqxmd.com/read/27378871/editorial-intellectual-disabilities-in-down-syndrome-from-birth-and-throughout-life-assessment-and-treatment
#19
Marie-Claude Potier, Roger H Reeves
No abstract text is available yet for this article.
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27340223/cilia-gene-mutations-cause-atrioventricular-septal-defects-by-multiple-mechanisms
#20
Ozanna Burnicka-Turek, Jeffrey D Steimle, Wenhui Huang, Lindsay Felker, Anna Kamp, Junghun Kweon, Michael Peterson, Roger H Reeves, Cheryl L Maslen, Peter J Gruber, Xinan H Yang, Jay Shendure, Ivan P Moskowitz
Atrioventricular septal defects (AVSDs) are a common severe form of congenital heart disease (CHD). In this study we identified deleterious non-synonymous mutations in two cilia genes, Dnah11 and Mks1, in independent N-ethyl-N-nitrosourea-induced mouse mutant lines with heritable recessive AVSDs by whole-exome sequencing. Cilia are required for left/right body axis determination and second heart field (SHF) Hedgehog (Hh) signaling, and we find that cilia mutations affect these requirements differentially. Dnah11(avc)(4) did not disrupt SHF Hh signaling and caused AVSDs only concurrently with heterotaxy, a left/right axis abnormality...
July 15, 2016: Human Molecular Genetics
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