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Roger Reeves

Rachel C Brierley, Maria Pufulete, Jessica Harris, Chiara Bucciarelli-Ducci, John P Greenwood, Stephen Dorman, Richard Anderson, Chris A Rogers, Barnaby C Reeves
OBJECTIVES: To determine whether it is feasible to set up a national registry, linking routinely collected data from hospital information systems (HIS), to investigate the role of cardiovascular magnetic resonance (CMR) in patients who activate the primary percutaneous coronary intervention (PPCI) pathway. DESIGN: Feasibility prospective cohort study, to establish whether: (1) consent can be implemented; (2) data linkage and extraction from multiple HIS can be achieved for >90% of consented patients; (3) local data can be successfully linked with hospital episode data (Hospital Episode Statistics, HES; Patient Episode Database for Wales, PEDW) for >90% of consented patients and (4) the proportion of patients activating the PPCI pathway who get a CMR scan is ≥10% in hospitals with dedicated CMR facilities...
March 1, 2018: BMJ Open
Iain Templeman, Dylan Thompson, Javier Gonzalez, Jean-Philippe Walhin, Sue Reeves, Peter J Rogers, Jeffrey M Brunstrom, Leonidas G Karagounis, Kostas Tsintzas, James A Betts
BACKGROUND: Prior studies have shown that intermittent fasting is capable of producing improvements in body weight and fasted health markers. However, the extent to which intermittent fasting incurs compensatory changes in the components of energy balance and its impact on postprandial metabolism are yet to be ascertained. METHODS: A total of 30-36 lean participants and 30-36 overweight/obese participants will be recruited to provide two separate study groups who will undergo the same protocol...
February 2, 2018: Trials
Giuseppe Orlando, Muhammad A Khan, Hany El-Hennawy, Alan C Farney, Jeffrey Rogers, Amber Reeves-Daniel, Michael D Gautreaux, William Doares, Scott Kaczmorski, Robert J Stratta
To determine the impact of prolonged cold ischemia time (CIT) on the outcome of acute kidney injury (AKI) renal grafts, we therefore performed a single center retrospective analysis in adult patients receiving kidney transplantation (KT) from AKI donors. Outcomes were stratified according to duration of CIT. 118 patients receiving AKI grafts were enrolled. Based on CIT, patients were stratified as follows: a) <20 hours, 27 patients; b) 20-30 hours, 52 patients; c) 30-40 hours, 30 patients; ≥40 hours, 9 patients...
December 28, 2017: Clinical Transplantation
Benjamin L Rambo-Martin, Jennifer G Mulle, David J Cutler, Lora J H Bean, Tracie C Rosser, Kenneth J Dooley, Clifford Cua, George Capone, Cheryl L Maslen, Roger H Reeves, Stephanie L Sherman, Michael E Zwick
One in five people with Down syndrome (DS) are born with an atrioventricular septal defect (AVSD), an incidence 2,000 times higher than in the euploid population. The genetic loci that contribute to this risk are poorly understood. In this study, we tested two hypotheses: 1) individuals with DS carrying chromosome 21 copy number variants (CNVs) that interrupt exons may be protected from AVSD, because these CNVs return AVSD susceptibility loci back to disomy, and 2) individuals with DS carrying chromosome 21 genes spanned by microduplications are at greater risk for AVSD because these microduplications boost the dosage of AVSD susceptibility loci beyond a tolerable threshold...
November 15, 2017: G3: Genes—Genomes—Genetics
Sarah Baos, Wendy Underwood, Lucy Culliford, Barnaby C Reeves, Chris A Rogers, Ruth Bowles, Tom Johnson, Andreas Baumbach, Andrew Mumford
BACKGROUND: Dual antiplatelet therapy (DAPT) with aspirin (ASP) and a P2Y12 blocker is currently standard care after percutaneous coronary intervention (PCI) with stent insertion, and aims to inhibit platelet function in order to prevent stent thrombosis. The P2Y12 blocker ticagrelor (TIC) has greater antiplatelet effect than the previously used members of this class, such as clopidogrel. In healthy volunteers, TIC is sufficient to cause strong platelet inhibition, with little additional effect from ASP...
November 9, 2017: Trials
C A Rogers, S Stoica, L Ellis, E A Stokes, S Wordsworth, L Dabner, G Clayton, R Downes, E Nicholson, S Bennett, G D Angelini, B C Reeves, G J Murphy
Background: We assessed whether a near-infrared spectroscopy (NIRS)-based algorithm for the personalized optimization of cerebral oxygenation during cardiopulmonary bypass combined with a restrictive red cell transfusion threshold would reduce perioperative injury to the brain, heart, and kidneys. Methods: In a randomized controlled trial, participants in three UK centres were randomized with concealed allocation to a NIRS (INVOS 5100; Medtronic Inc., Minneapolis, MN, USA)-based 'patient-specific' algorithm that included a restrictive red cell transfusion threshold (haematocrit 18%) or to a 'generic' non-NIRS-based algorithm (standard care)...
September 1, 2017: British Journal of Anaesthesia
John M Starbuck, Theodore M Cole, Roger H Reeves, Joan T Richtsmeier
Triplication of chromosome 21 (trisomy 21) results in Down syndrome (DS), the most common live-born human aneuploidy. Individuals with DS have a unique facial appearance that can include form changes and altered variability. Using 3D photogrammatic images, 3D coordinate locations of 20 anatomical landmarks, and Euclidean Distance Matrix Analysis methods, we quantitatively test the hypothesis that children with DS (n = 55) exhibit facial form and variance differences relative to two different age-matched (4-12 years) control samples of euploid individuals: biological siblings of individuals with DS (n = 55) and euploid individuals without a sibling with DS (n = 55)...
November 2017: American Journal of Medical Genetics. Part A
Barnaby C Reeves, Lazaros Andronis, Jane M Blazeby, Natalie S Blencowe, Melanie Calvert, Joanna Coast, Tim Draycott, Jenny L Donovan, Rachael Gooberman-Hill, Robert J Longman, Laura Magill, Jonathan M Mathers, Thomas D Pinkney, Chris A Rogers, Leila Rooshenas, Andrew Torrance, Nicky J Welton, Mark Woodward, Kate Ashton, Katarzyna D Bera, Gemma L Clayton, Lucy A Culliford, Jo C Dumville, Daisy Elliott, Lucy Ellis, Hannah Gould-Brown, Rhiannon C Macefield, Christel McMullan, Caroline Pope, Dimitrios Siassakos, Sean Strong, Helen Talbot
BACKGROUND: Surgical site infections (SSIs) are common, occurring in up to 25% of > 4 million operations performed in England each year. Previous trials of the effect of wound dressings on the risk of developing a SSI are of poor quality and underpowered. METHODS/DESIGN: This study is a feasibility and pilot trial to examine the feasibility of a full trial that will compare simple dressings, no dressing and tissue-glue as a dressing. It is examining the overall acceptability of trial participation, identifying opportunities for refinement, testing the feasibility of and validating new outcome tools to assess SSI, wound management issues and patients' wound symptom experiences...
August 29, 2017: Trials
Maria Pufulete, Rachel Maishman, Lucy Dabner, Syed Mohiuddin, William Hollingworth, Chris A Rogers, Julian Higgins, Mark Dayer, John Macleod, Sarah Purdy, Theresa McDonagh, Angus Nightingale, Rachael Williams, Barnaby C Reeves
BACKGROUND: Heart failure (HF) affects around 500,000 people in the UK. HF medications are frequently underprescribed and B-type natriuretic peptide (BNP)-guided therapy may help to optimise treatment. OBJECTIVE: To evaluate the clinical effectiveness and cost-effectiveness of BNP-guided therapy compared with symptom-guided therapy in HF patients. DESIGN: Systematic review, cohort study and cost-effectiveness model. SETTING: A literature review and usual care in the NHS...
August 2017: Health Technology Assessment: HTA
Fabrizia Urbinati, Jennifer Wherley, Sabine Geiger, Beatriz Campo Fernandez, Michael L Kaufman, Aaron Cooper, Zulema Romero, Filippo Marchioni, Lilith Reeves, Elizabeth Read, Barbara Nowicki, Elke Grassman, Shivkumar Viswanathan, Xiaoyan Wang, Roger P Hollis, Donald B Kohn
BACKGROUND AIMS: Gene therapy by autologous hematopoietic stem cell transplantation (HSCT) represents a new approach to treat sickle cell disease (SCD). Optimization of the manufacture, characterization and testing of the transduced hematopoietic stem cell final cell product (FCP), as well as an in depth in vivo toxicology study, are critical for advancing this approach to clinical trials. METHODS: Data are shown to evaluate and establish the feasibility of isolating, transducing with the Lenti/βAS3 -FB vector and cryopreserving CD34+ cells from human bone marrow (BM) at clinical scale...
September 2017: Cytotherapy
C A Rogers, B C Reeves, J Byrne, J L Donovan, G Mazza, S Paramasivan, R C Andrews, S Wordsworth, J Thompson, J M Blazeby, R Welbourn
BACKGROUND: Recruitment into surgical RCTs can be threatened if new interventions available outside the trial compete with those being evaluated. Adapting the trial to include the new intervention may overcome this issue, yet this is not often done in surgery. This paper describes the challenges, rationale and methods for adapting an RCT to include a new intervention. METHODS: The By-Band study was designed in the UK in 2009-2010 to compare the effectiveness of laparoscopic adjustable gastric band and Roux-en-Y gastric bypass for severe obesity...
August 2017: British Journal of Surgery
Maria Pufulete, Rachel C Brierley, Chiara Bucciarelli-Ducci, John P Greenwood, Stephen Dorman, Richard A Anderson, Jessica Harris, Elisa McAlindon, Chris A Rogers, Barnaby C Reeves
OBJECTIVE: To define important changes in management arising from the use of cardiovascular magnetic resonance (CMR) in patients who activate the primary percutaneous coronary intervention (PPCI) pathway. DESIGN: Formal consensus study using literature review and cardiologist expert opinion to formulate consensus statements and setting up a consensus panel to review the statements (by completing a web-based survey, attending a face-to-face meeting to discuss survey results and modify the survey to reflect group discussion and completing the modified survey to determine which statements were in consensus)...
June 22, 2017: BMJ Open
Madeleine Clout, Tracy Harris, Chris Rogers, Lucy Culliford, Jodi Taylor, Gianni Angelini, Pradeep Narayan, Barnaby Reeves, James Hillier, Kate Ashton, Kunal Sarkar, Raimondo Ascione
BACKGROUND: Diabetes mellitus is a major risk factor for prolonged hospital stays, renal failure, and mortality in patients having coronary artery bypass grafting (CABG). Complications pose a serious threat to patients and prolong intensive care and hospital stays. Low glomerular filtration rate (GFR) due to existing renal impairment or volume depletion may exacerbate acute renal impairment/failure in these patients. Preoperative volume replacement therapy (VRT) is reported to increase the GFR and we hypothesize that VRT will reduce renal impairment and related complications in diabetic patients...
June 19, 2017: JMIR Research Protocols
Muhammad A Khan, Hany El-Hennawy, Alan C Farney, Jeffrey Rogers, Giuseppe Orlando, Amber Reeves-Daniel, Amudha Palanisamy, Michael Gautreaux, Samy Iskandar, William Doares, Scott Kaczmorski, Robert J Stratta
BACKGROUND: The value of importing expanded criteria donor (ECD) kidneys is uncertain. METHODS: We retrospectively reviewed our single-center experience with ECD kidney transplants (KT). RESULTS: Over 12.8 years, we performed 497 ECD KTs including 247 local and 250 imported from other donor service areas. The import ECD group had more donors (16% vs 9%) ≥ age 70, more zero human leukocyte antigen mismatches (14% vs 2%), more KTs with a cold ischemia time >30 hours (46% vs 19%), and fewer kidneys managed with pump preservation (78% vs 92%, all P≤...
August 2017: Clinical Transplantation
Jamie O Edgin, Payal Anand, Tracie Rosser, Elizabeth I Pierpont, Carlos Figueroa, Debra Hamilton, Lillie Huddleston, Gina Mason, Goffredina Spanò, Lisa Toole, Mina Nguyen-Driver, George Capone, Leonard Abbeduto, Cheryl Maslen, Roger H Reeves, Stephanie Sherman
A multisite study investigated the test-retest reliability and practice effects of a battery of assessments to measure neurocognitive function in individuals with Down syndrome (DS). The study aimed to establish the appropriateness of these measures as potential endpoints for clinical trials. Neurocognitive tasks and parent report measures comprising the Arizona Cognitive Test Battery (ACTB) were administered to 54 young participants with DS (7-20 years of age) with mild to moderate levels of intellectual disability in an initial baseline evaluation and a follow-up assessment 3 months later...
May 2017: American Journal on Intellectual and Developmental Disabilities
Mei-Fang Xiao, Desheng Xu, Michael T Craig, Kenneth A Pelkey, Chun-Che Chien, Yang Shi, Juhong Zhang, Susan Resnick, Olga Pletnikova, David Salmon, James Brewer, Steven Edland, Jerzy Wegiel, Benjamin Tycko, Alena Savonenko, Roger H Reeves, Juan C Troncoso, Chris J McBain, Douglas Galasko, Paul F Worley
Memory loss in Alzheimer's disease (AD) is attributed to pervasive weakening and loss of synapses. Here, we present findings supporting a special role for excitatory synapses connecting pyramidal neurons of the hippocampus and cortex with fast-spiking parvalbumin (PV) interneurons that control network excitability and rhythmicity. Excitatory synapses on PV interneurons are dependent on the AMPA receptor subunit GluA4, which is regulated by presynaptic expression of the synaptogenic immediate early gene NPTX2 by pyramidal neurons...
March 23, 2017: ELife
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
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...
February 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
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)...
April 2017: Clinical Trials: Journal of the Society for Clinical Trials
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...
May 15, 2017: Cancer
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