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https://www.readbyqxmd.com/read/28935561/analysis-of-the-optimal-vaccination-age-for-dengue-in-brazil-with-a-tetravalent-dengue-vaccine
#1
Sandra B Maier, Xiao Huang, Eduardo Massad, Marcos Amaku, Marcelo N Burattini, David Greenhalgh
In this paper we study a mathematical model to analyse the optimal vaccination age against Dengue in Brazil. Data from Brazil are used to estimate the basic reproduction numbers for each of the four Dengue serotypes and then the optimal vaccination age is calculated using a method due to Hethcote [1]. The vaccine has different efficacies against each serotype. Vaccination that is too early is ineffective as individuals are protected by maternal antibodies but leaving vaccination until later may allow the disease to spread...
September 18, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28933018/-18-f-fluoromisonidazole-pet-in-rectal-cancer
#2
Tanuj Puri, Tessa A Greenhalgh, James M Wilson, Jamie Franklin, Lia Mun Wang, Victoria Strauss, Chris Cunningham, Mike Partridge, Tim Maughan
BACKGROUND: There is an increasing interest in developing predictive biomarkers of tissue hypoxia using functional imaging for personalised radiotherapy in patients with rectal cancer that are considered for neoadjuvant chemoradiotherapy (CRT). The study explores [(18)F]fluoromisonidazole ([(18)F]FMISO) positron emission tomography (PET) scans for predicting clinical response in rectal cancer patients receiving neoadjuvant CRT. METHODS: Patients with biopsy-proven rectal adenocarcinoma were imaged at 0-45 min, 2 and 4 h, at baseline and after 8-10 fractions of CRT (week 2)...
September 20, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28931436/structural-analysis-of-health-relevant-policy-making-information-exchange-networks-in-canada
#3
Damien Contandriopoulos, François Benoît, Denise Bryant-Lukosius, Annie Carrier, Nancy Carter, Raisa Deber, Arnaud Duhoux, Trisha Greenhalgh, Catherine Larouche, Bernard-Simon Leclerc, Adrian Levy, Ruth Martin-Misener, Katerina Maximova, Kimberlyn McGrail, Candace Nykiforuk, Noralou Roos, Robert Schwartz, Thomas W Valente, Sabrina Wong, Evert Lindquist, Carolyn Pullen, Anne Lardeux, Melanie Perroux
BACKGROUND: Health systems worldwide struggle to identify, adopt, and implement in a timely and system-wide manner the best-evidence-informed-policy-level practices. Yet, there is still only limited evidence about individual and institutional best practices for fostering the use of scientific evidence in policy-making processes The present project is the first national-level attempt to (1) map and structurally analyze-quantitatively-health-relevant policy-making networks that connect evidence production, synthesis, interpretation, and use; (2) qualitatively investigate the interaction patterns of a subsample of actors with high centrality metrics within these networks to develop an in-depth understanding of evidence circulation processes; and (3) combine these findings in order to assess a policy network's "absorptive capacity" regarding scientific evidence and integrate them into a conceptually sound and empirically grounded framework...
September 20, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28922829/the-threshold-of-the-state-civil-defence-the-blackout-and-the-home-in-second-world-war-britain
#4
James Greenhalgh
This article reconsiders the way that the British state extended its control of the home during the Second World War, using the implementation of air raid precautions and the blackout as a lens through which to view the state's developing attitudes to domestic space. Presented here is not the familiar story of pitch-dark, dangerous streets or altered cityscapes of fear and destruction; instead, by examining personal testimony the article inverts traditional treatments of the blackout to look at the interior of dwellings, demonstrating how the realities of total warfare impinged upon the psychological elements that constituted the home...
June 1, 2017: 20 Century British History
https://www.readbyqxmd.com/read/28915892/modelling-the-impact-of-the-long-term-use-of-insecticide-treated-bed-nets-on-anopheles-mosquito-biting-time
#5
Claudia P Ferreira, Silas P Lyra, Franciane Azevedo, David Greenhalgh, Eduardo Massad
BACKGROUND: Evidence of changing in biting and resting behaviour of the main malaria vectors has been mounting up in recent years as a result of selective pressure by the widespread and long-term use of insecticide-treated bed nets (ITNs), and indoor residual spraying. The impact of resistance behaviour on malaria intervention efficacy has important implications for the epidemiology and malaria control programmes. In this context, a theoretical framework is presented to understand the mechanisms determining the evolution of feeding behaviour under the pressure of use of ITNs...
September 15, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28891062/a-systematic-review-of-information-format-and-timing-before-scheduled-adult-surgery-for-peri-operative-anxiety
#6
REVIEW
J Hounsome, A Lee, J Greenhalgh, S R Lewis, O J Schofield-Robinson, C H Coldwell, A F Smith
We included 34 trials with 3742 participants, identified through 6 database and supplementary searches (to May 2017): 29 were randomised; 4 were quasi-randomised and 1 was cluster-randomised. Disparate measurements and outcomes precluded meta-analyses. Blinding was attempted in only 6 out of 34 (18%) trials. A multimedia format, alone or in combination with text or verbal formats, was studied in 20/34 (59%) trials: pre-operative anxiety was unaffected in 10 out of 14 trials and reduced by the multimedia format in three; postoperative anxiety was unaffected in four out of five trials in which formats were compared...
October 2017: Anaesthesia
https://www.readbyqxmd.com/read/28855862/novel-influences-of-il-10-on-cns-inflammation-revealed-by-integrated-analyses-of-cytokine-networks-and-microglial-morphology
#7
Warren D Anderson, Andrew D Greenhalgh, Aditya Takwale, Samuel David, Rajanikanth Vadigepalli
Coordinated interactions between cytokine signaling and morphological dynamics of microglial cells regulate neuroinflammation in CNS injury and disease. We found that pro-inflammatory cytokine gene expression in vivo showed a pronounced recovery following systemic LPS. We performed a novel multivariate analysis of microglial morphology and identified changes in specific morphological properties of microglia that matched the expression dynamics of pro-inflammatory cytokine TNFα. The adaptive recovery kinetics of TNFα expression and microglial soma size showed comparable profiles and dependence on anti-inflammatory cytokine IL-10 expression...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28843543/microglia-and-macrophages-differ-in-their-inflammatory-profile-after-permanent-brain-ischemia
#8
REVIEW
Juan G Zarruk, Andrew D Greenhalgh, Samuel David
We studied the expression of pro- and anti-inflammatory molecules in microglia and infiltrating monocyte-derived macrophages after permanent Middle Cerebral Artery Occlusion (pMCAO). LysM-EGFP knock-in mice were used to distinguish between these two cell types, as peripheral myeloid cells are LysM-EGFP(+), while microglia are not. This was confirmed with P2ry12 (a microglial specific marker), Iba-1 and EGFP immunostaining. The peak of LysM-EGFP(+) myeloid cell infiltration was 72h post-ischemia, and were distributed evenly in the lesion core, surrounded by a dense region of microglia...
August 24, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28838312/docosahexaenoic-acid-containing-choline-phospholipid-modulates-lps-induced-neuroinflammation-in-vivo-and-in-microglia-in-vitro
#9
Célia Fourrier, Julie Remus-Borel, Andrew D Greenhalgh, Michel Guichardant, Nathalie Bernoud-Hubac, Michel Lagarde, Corinne Joffre, Sophie Layé
BACKGROUND: Neuroinflammatory processes are considered a double-edged sword, having both protective and detrimental effects in the brain. Microglia, the brain's resident innate immune cells, are a key component of neuroinflammatory response. There is a growing interest in developing drugs to target microglia and control neuroinflammatory processes. In this regard, docosahexaenoic acid (DHA), the brain's n-3 polyunsaturated fatty acid, is a promising molecule to regulate pro-inflammatory microglia and cytokine production...
August 24, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28832903/drug-eluting-stents-versus-bare-metal-stents-for-acute-coronary-syndrome
#10
REVIEW
Joshua Feinberg, Emil Eik Nielsen, Janette Greenhalgh, Juliet Hounsome, Naqash J Sethi, Sanam Safi, Christian Gluud, Janus C Jakobsen
BACKGROUND: Approximately 3.7 million people died from acute coronary syndrome worldwide in 2012. Acute coronary syndrome, also known as myocardial infarction or unstable angina pectoris, is caused by a sudden blockage of the blood supplied to the heart muscle. Percutaneous coronary intervention is often used for acute coronary syndrome, but previous systematic reviews on the effects of drug-eluting stents compared with bare-metal stents have shown conflicting results with regard to myocardial infarction; have not fully taken account of the risk of random and systematic errors; and have not included all relevant randomised clinical trials...
August 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28806989/maximising-value-from-a-united-kingdom-biomedical-research-centre-study-protocol
#11
Trisha Greenhalgh, Pavel V Ovseiko, Nick Fahy, Sara Shaw, Polly Kerr, Alexander D Rushforth, Keith M Channon, Vasiliki Kiparoglou
BACKGROUND: Biomedical Research Centres (BRCs) are partnerships between healthcare organisations and universities in England. Their mission is to generate novel treatments, technologies, diagnostics and other interventions that increase the country's international competitiveness, to rapidly translate these innovations into benefits for patients, and to improve efficiency and reduce waste in healthcare. As NIHR Oxford BRC (Oxford BRC) enters its third 5-year funding period, we seek to (1) apply the evidence base on how best to support the various partnerships in this large, multi-stakeholder research system and (2) research how these partnerships play out in a new, ambitious programme of translational research...
August 14, 2017: Health Research Policy and Systems
https://www.readbyqxmd.com/read/28802720/application-of-green-fluorescent-protein-to-measure-antimicrobial-efficacy-and-the-kinetics-of-cell-death-against-escherichia-coli
#12
Richard Greenhalgh, Malcolm Greenhalgh, Fadwa Alshareef, Geoffrey D Robson
Industrial antimicrobials have been extensively used to control unwanted microbial growth by incorporation into a variety of products such as plastics and paints, reducing biodeterioration and biofouling and extending the lifespan of the product. Industrial antimicrobials generally have broad sites of action affecting core cellular functions such as central metabolism, enzyme function, cell wall or DNA synthesis and can either be biocidal or biostatic. In addition, susceptibility can be affected by the metabolic state of the microbe, with metabolically inactive cells generally more resistant than metabolically active cells...
August 10, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28801403/equipping-community-pharmacy-workers-as-agents-for-health-behaviour-change-developing-and-testing-a-theory-based-smoking-cessation-intervention
#13
Liz Steed, Ratna Sohanpal, Wai-Yee James, Carol Rivas, Sandra Jumbe, Angel Chater, Adam Todd, Elizabeth Edwards, Virginia Macneil, Fraser Macfarlane, Trisha Greenhalgh, Chris Griffiths, Sandra Eldridge, Stephanie Taylor, Robert Walton
OBJECTIVE: To develop a complex intervention for community pharmacy staff to promote uptake of smoking cessation services and to increase quit rates. DESIGN: Following the Medical Research Council framework, we used a mixed-methods approach to develop, pilot and then refine the intervention. METHODS: Phase I: We used information from qualitative studies in pharmacies, systematic literature reviews and the Capability, Opportunity, Motivation-Behaviour framework to inform design of the initial version of the intervention...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28795054/sepsis-in-the-burn-patient-a-different-problem-than-sepsis-in-the-general-population
#14
REVIEW
David G Greenhalgh
Sepsis has recently been defined as "life-threatening organ dysfunction caused by a dysregulated host response to infection". A great amount of effort has been made to develop early treatments for sepsis through the Surviving Sepsis Campaign. There are similar but slightly different recommendations for the treatment of sepsis in the pediatric population. These international efforts have led to earlier diagnosis and treatments for sepsis that have led to improvements in survival. Sepsis is also the leading cause of death in the burn patient but most clinical sepsis studies have excluded burns...
2017: Burns and trauma
https://www.readbyqxmd.com/read/28791763/aryloxide-facilitated-catalyst-turnover-in-enantioselective-%C3%AE-%C3%AE-unsaturated-acyl-ammonium-catalysis
#15
Anastassia Matviitsuk, Mark D Greenhalgh, Diego-Javier Barrios Antúnez, Alexandra M Z Slawin, Andrew D Smith
A new general concept for α,β-unsaturated acyl ammonium catalysis is reported that uses p-nitrophenoxide release from an α,β-unsaturated p-nitrophenyl ester substrate to facilitate catalyst turnover. This method was used for the enantioselective isothiourea-catalyzed Michael addition of nitroalkanes to α,β-unsaturated p-nitrophenyl esters in generally good yield and with excellent enantioselectivity (27 examples, up to 79 % yield, 99:1 er). Mechanistic studies identified rapid and reversible catalyst acylation by the α,β-unsaturated p-nitrophenyl ester, and a recently reported variable-time normalization kinetic analysis method was used to delineate the complex reaction kinetics...
August 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28742684/endovascular-repair-of-abdominal-aortic-aneurysm-in-patients-physically-ineligible-for-open-repair-very-long-term-follow-up-in-the-evar-2-randomized-controlled-trial
#16
Michael J Sweeting, Rajesh Patel, Janet T Powell, Roger M Greenhalgh
OBJECTIVE: The aim of the study was to compare long-term total and aneurysm-related mortality in physically frail patients with abdominal aortic aneurysm (AAA) randomized to either early endovascular aneurysm repair (EVAR) or no-intervention. SUMMARY BACKGROUND DATA: EVAR-2 remains the sole randomized trial to identify whether EVAR reduces mortality in patients physically ineligible for open repair. METHODS: Between September 1999 and August 2004, 404 patients from 33 centers in the United Kingdom aged ≥60 years with AAA >5...
August 1, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28707098/creating-environments-to-support-breastfeeding-the-challenges-and-facilitators-of-policy-development-in-hospitals-clinics-early-care-and-education-and-worksites
#17
Victoria A Bradford, Lina P Walkinshaw, Lesley Steinman, Jennifer J Otten, Kari Fisher, Amy Ellings, Jean O'Leary, Donna B Johnson
Objectives Supportive organizational breastfeeding policies can establish enabling environments for breastfeeding. In this qualitative study we identify facilitators and barriers to the development, adoption, and implementation of supportive breastfeeding policies and practices in four influential sectors for breastfeeding women: hospitals, clinics, early care and education settings, and worksites. Methods We interviewed 125 individuals representing 110 organizations in Washington State about their breastfeeding policy development and implementation process between August 2014 and February 2015...
July 13, 2017: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/28697050/transfusion-requirement-in-burn-care-evaluation-tribe-a-multicenter-randomized-prospective-trial-of-blood-transfusion-in-major-burn-injury
#18
RANDOMIZED CONTROLLED TRIAL
Tina L Palmieri, James H Holmes, Brett Arnoldo, Michael Peck, Bruce Potenza, Amalia Cochran, Booker T King, William Dominic, Robert Cartotto, Dhaval Bhavsar, Nathan Kemalyan, Edward Tredget, Francois Stapelberg, David Mozingo, Bruce Friedman, David G Greenhalgh, Sandra L Taylor, Brad H Pollock
OBJECTIVE: Our objective was to compare outcomes of a restrictive to a liberal red cell transfusion strategy in 20% or more total body surface area (TBSA) burn patients. We hypothesized that the restrictive group would have less blood stream infection (BSI), organ dysfunction, and mortality. BACKGROUND: Patients with major burns have major (>1 blood volume) transfusion requirements. Studies suggest that a restrictive blood transfusion strategy is equivalent to a liberal strategy...
October 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28687532/studying-scale-up-and-spread-as-social-practice-theoretical-introduction-and-empirical-case-study
#19
James Shaw, Sara Shaw, Joseph Wherton, Gemma Hughes, Trisha Greenhalgh
BACKGROUND: Health and care technologies often succeed on a small scale but fail to achieve widespread use (scale-up) or become routine practice in other settings (spread). One reason for this is under-theorization of the process of scale-up and spread, for which a potentially fruitful theoretical approach is to consider the adoption and use of technologies as social practices. OBJECTIVE: This study aimed to use an in-depth case study of assisted living to explore the feasibility and usefulness of a social practice approach to explaining the scale-up of an assisted-living technology across a local system of health and social care...
July 7, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28674017/disruption-of-a-horizontally-transferred-phytoene-desaturase-abolishes-carotenoid-accumulation-and-diapause-in-tetranychus-urticae
#20
Astrid Bryon, Andre H Kurlovs, Wannes Dermauw, Robert Greenhalgh, Maria Riga, Miodrag Grbić, Luc Tirry, Masahiro Osakabe, John Vontas, Richard M Clark, Thomas Van Leeuwen
Carotenoids underlie many of the vibrant yellow, orange, and red colors in animals, and are involved in processes ranging from vision to protection from stresses. Most animals acquire carotenoids from their diets because de novo synthesis of carotenoids is primarily limited to plants and some bacteria and fungi. Recently, sequencing projects in aphids and adelgids, spider mites, and gall midges identified genes with homology to fungal sequences encoding de novo carotenoid biosynthetic proteins like phytoene desaturase...
July 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
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