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Vekstein A, Armstrong J, Haney J. Early Experience with Minimally Invasive Pulmonary Thromboendarterectomy for High-Risk Patients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Krause S, Armstrong J, Yaun J. Utilization of ICD codes for improved identification of infants eligible for synagis. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00669-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Adrian PJ, Armstrong J, Birkel A, Chang C, Dannhoff S, Evans T, Johnson MG, Johnson TM, Kabadi N, Kunimune J, Li CK, Reichelt B, Regan SP, Pearcy J, Petrasso RD, Pien G, McCluskey M, Séguin FH, Sutcliffe GD, Frenje JA. In situ calibration of charged particle spectrometers on the OMEGA Laser Facility using 241Am and 226Ra sources. Rev Sci Instrum 2022; 93:113534. [PMID: 36461490 DOI: 10.1063/5.0099752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 09/06/2022] [Indexed: 06/17/2023]
Abstract
Charged particle spectrometry is a critical diagnostic to study inertial-confinement-fusion plasmas and high energy density plasmas. The OMEGA Laser Facility has two fixed magnetic charged particle spectrometers (CPSs) to measure MeV-ions. In situ calibration of these spectrometers was carried out using 241Am and 226Ra alpha emitters. The alpha emission spectrum from the sources was measured independently using surface-barrier detectors (SBDs). The energy dispersion and broadening of the CPS systems were determined by comparing the CPS measured alpha spectrum to that of the SBD. The calibration method significantly constrains the energy dispersion, which was previously obtained through the measurement of charged particle fusion products. Overall, a small shift of 100 keV was observed between previous and the calibration done in this work.
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Affiliation(s)
- P J Adrian
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Armstrong
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A Birkel
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - C Chang
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - S Dannhoff
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - T Evans
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - M Gatu Johnson
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - T M Johnson
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - N Kabadi
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Kunimune
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - C K Li
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - B Reichelt
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J Pearcy
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - R D Petrasso
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - G Pien
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M McCluskey
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - F H Séguin
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - G D Sutcliffe
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J A Frenje
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Zaorsky N, Sun Y, Nabid A, Zapatero A, Bolla M, Denham J, Pisansky T, Sandler H, Efstathiou J, Maingon P, Steigler A, Souhami L, Carrier N, Armstrong J, Jackson W, Jia A, Ma T, Romero T, Kishan A, Spratt D. Optimal Duration of Androgen Deprivation Therapy (ADT) with Definitive Radiotherapy for Prostate Cancer: An Individual Patient Data (IPD) Meta-Analysis from the International MARCAP Consortium. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Becksfort J, Lucas J, Hsu C, Vajapeyam S, Wang C, Simpson E, Chiang J, Armstrong J, Soike M, Young M, Kann B, Li Y, Li C, Lu Z, Kline C, Meuller S, Gajjar A, Merchant T, Baker S, Patay Z, Wright K, Poussaint T, Tinkle C. Conventional and Cross-Channel MR Radiomic Features do Not Predict Histone H3 Status in DIPG: Genomic and Clinical Evaluation of a Multi-Institutional Cohort. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Burke M, Rangaswamy G, Dunne M, Armstrong J, Faul C, Fitzpatrick D. PO-1430 A Retrospective study of outcomes with stereotactic radiosurgery for melanoma brain metastasis. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03394-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Migliorelli C, Medina-Rivera I, Bachiller A, Tost A, Alonso JF, López-Sala A, Armstrong J, O'Callahan MDM, Pineda M, Mañanas MA, Romero S, García-Cazorla Á. Cognitive stimulation has potential for brain activation in individuals with Rett syndrome. J Intellect Disabil Res 2022; 66:213-224. [PMID: 34796573 DOI: 10.1111/jir.12902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 10/15/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Knowledge regarding neuropsychological training in Rett syndrome (RS) is scarce. The aim of this study was to assess the outcome and the duration of the effect of cognitive stimulation on topographic electroencephalography (EEG) data in RS. METHODS Twenty female children diagnosed with RS were included in the analysis. Girls with RS conducted a cognitive task using an eye-tracker designed to evaluate access and choice skills. EEG data were acquired during the experimental procedure including two 10-min baseline stages before and after the task. Topographical changes of several EEG spectral markers including absolute and relative powers, Brain Symmetry Index and entropy were assessed. RESULTS Topographic significance probability maps suggested statistical decreases on delta activity and increases on beta rhythm associated with the cognitive task. Entropy increased during and after the task, likely related to more complex brain activity. A significant positive interaction was obtained between Brain Symmetry Index and age showing that the improvement of interhemispheric symmetry was higher in younger girls (5-10 years). CONCLUSIONS According to our findings, significant alterations of brain rhythms were observed during and after cognitive stimulation, suggesting that cognitive stimulation may have effects on brain activity beyond the stimulation period. Finally, our promising results also showed an increase brain symmetry that was especially relevant for the younger group. This could suggest an interaction of the eye-tracking cognitive task; however, further studies in this field are needed to assess the relation between brain asymmetries and age.
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Affiliation(s)
- C Migliorelli
- Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - I Medina-Rivera
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Neurology Department, Neurometabolic Unit and Synaptic Metabolism Lab, Institut Pediàtric de Recerca, Hospital Sant Joan de Déu, metabERN and CIBERER-ISCIII, Barcelona, Spain
| | - A Bachiller
- Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - A Tost
- Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
| | - J F Alonso
- Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - A López-Sala
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Neurology Department, Neurometabolic Unit and Synaptic Metabolism Lab, Institut Pediàtric de Recerca, Hospital Sant Joan de Déu, metabERN and CIBERER-ISCIII, Barcelona, Spain
| | - J Armstrong
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Molecular Genetics Medicine Section, Hospital Sant Joan de Déu, Barcelona, Spain
| | - M D M O'Callahan
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Neurology Department, Neurometabolic Unit and Synaptic Metabolism Lab, Institut Pediàtric de Recerca, Hospital Sant Joan de Déu, metabERN and CIBERER-ISCIII, Barcelona, Spain
| | - M Pineda
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - M A Mañanas
- Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - S Romero
- Department of Automatic Control (ESAII), Biomedical Engineering Research Centre (CREB), Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Á García-Cazorla
- Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Neurology Department, Neurometabolic Unit and Synaptic Metabolism Lab, Institut Pediàtric de Recerca, Hospital Sant Joan de Déu, metabERN and CIBERER-ISCIII, Barcelona, Spain
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Guppy-Coles K, Prasad S, Lo A, Johnstone M, Armstrong J, Nguyen J, Murphy S, Ruane L, Mew C, Atherton J. Feasibility and Accuracy of Non-Specialised Medical Staff Performing Left Ventricular Ejection Fraction Assessment Using a Hand-held Echocardiography Device With an Automated Algorithm. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Guppy-Coles K, Prasad S, Lo A, Johnstone M, Armstrong J, Nguyen J, Murphy S, Ruane L, Mew C, Atherton J. Non-Specialised Medical Staff Assessing Left Ventricular Systolic Function by Measuring Mitral Annular Excursion via Hand-Held Echocardiography Device and Automated Atrioventricular-Plane Tracking Algorithm. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Background Health care workers (HCWs) have been recognized as being at higher risk for coronavirus disease 2019 (COVID-19) infection; however, relevant factors and magnitude have not been clearly elucidated. Aim This study was aimed to describe COVID-19 infections among hospital employees at a large tertiary care hospital located in Ontario, Canada from March to July 2020, towards better understanding potential risk factors. Methods Data on all HCWs with either a positive COVID test or a high-risk exposure from March to July 2020 were analyzed. HCWs with positive COVID test results and high-risk exposures were described. Those who developed COVID-19 following high-risk exposure were compared to those who did not. Data were also analyzed to determine trends over time. Results Over the period of observation, 193 staff (2% of total working staff) had a positive COVID-19 test. Incidence of HCW infections closely followed community incidence. Overall, 31% of COVID-19 cases were deemed occupationally acquired. Of these, 41% were acquired from a patient, with the remainder (59%) from fellow staff. Over the same period, 204 staff were identified as having a high-risk exposure. The majority of exposures (55%) were patient-associated, with the remaining (45%) resulting from staff-to-staff contact. Overall, 13% went on to develop COVID-19. Of these cases, 58% were patient-associated and 42% were a result of staff-to-staff transmission. Conclusions HCWs are at risk for work-related COVID-19. Given the number of infections attributed to staff–staff transmission, greater attention could be paid to implementing prevention measures in non-clinical areas.
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Affiliation(s)
- V Spilchuk
- Division of Occupational Medicine, Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,Trillium Health Partners, Institute for Better Health, Mississauga, Ontario, Canada
| | - V H Arrandale
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,Occupational Cancer Research Centre, Ontario Health, Toronto, Ontario, Canada
| | - J Armstrong
- Trillium Health Partners, Institute for Better Health, Mississauga, Ontario, Canada
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Abstract
Placental assessment, although currently underused, can inform our understanding of the etiology and timing of Neonatal Encephalopathy (NE). We review our current understanding of the links between placental dysfunction and NE and how this information may inform clinical decisions, now and in the future, emphasizing the four major placental lesions associated with NE. In addition, we discuss maternal and fetal factors that are hypothesized to contribute to specific placental pathologies, especially innate or acquired thrombophilias. We outline the importance of assessing placenta across trimesters and after delivery. As this field continues to evolve, currently available placental histopathological examination methods may need to be combined with advanced prenatal molecular and imaging assessments of placenta and be applied in well-designed studies in large representative populations to better define the links between placental dysfunction and NE.
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Affiliation(s)
- A A Penn
- Division of Neonatology, Department of Pediatrics, Columbia University, New York, NY, USA.
| | - P Wintermark
- Division of Newborn Medicine, Montreal Children's Hospital, Montreal, Canada
| | - L F Chalak
- Neonatal-Perinatal Medicine, Department of Pediatrics, UT Southwestern Medical Center, Dallas, USA
| | - J Armstrong
- Department of Pediatrics (Section of Child Neurology, Neurology, and OB/GYN), University of Colorado Anschutz Medical Campus, Hemophilia and Thrombosis Center, Aurora, CO, USA
| | - R Redline
- Department of Pathology, UH Cleveland Medical Center, Cleveland, OH, USA
| | - M S Scher
- Case Western Reserve University School of Medicine, Department of Pediatrics, Department of Neurology, Rainbow Babies and Children's Hospital/MacDonald Hospital for Women, UH Cleveland Medical Center, Cleveland, OH, USA
| | - K B Nelson
- National Institutes of Health, National Institute of Neurological Diseases and Stroke, Bethesda, MD, USA
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12
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Higgins M, O’Keeffe S, Quinn M, Harper D, Thirion P, Armstrong J. PO-1620 Quantification of Incidental Clinical Target Volume Coverage in Linear Accelerator Based Lung SABR. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08071-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Armstrong J, Jenner P, Poulose S, Moppett IK. The effect of saline versus air for cuff inflation on the incidence of high intra-cuff pressure in paediatric MicroCuff ® tracheal tubes: a randomised controlled trial. Anaesthesia 2021; 76:1504-1510. [PMID: 33891328 DOI: 10.1111/anae.15493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2021] [Indexed: 11/27/2022]
Abstract
The use of cuffed tracheal tubes in paediatric anaesthesia is now common. The use of nitrous oxide in anaesthesia risks excessive tracheal tube cuff pressures, as nitrous oxide can diffuse into the cuff during the course of surgery. The aim of this single-centre, prospective, randomised controlled trial was to compare the effect of saline versus air for the inflation of tracheal tube cuffs on the incidence of excessive intra-operative cuff pressure in children undergoing balanced anaesthesia with nitrous oxide. Children (age ≤ 16 y) were randomly allocated to receive either saline (saline group) or air (air group) to inflate the cuff of their tracheal tube. The pressure in the tracheal tube cuff was measured during surgery and brought down to the initial inflation level if it breached a safe limit (25 cmH2 O). Post-extubation adverse respiratory events were noted. Data from 48 patients (24 in each group), aged 4 months to 16 y, were analysed. The requirement for reduction in intra-cuff pressure occurred in 1/24 patients in the saline group, compared with 16/24 patients in the air group (p < 0.001). The incidence of extubation-related adverse events was similar in the saline and air groups (15/24 vs. 13/24, respectively; p = 0.770). The use of saline to inflate the cuff of paediatric cuffed tubes reduces the incidence of high intra-cuff pressures during anaesthesia. This may provide a pragmatic extra safety barrier to help reduce the incidence of excessive tracheal cuff pressure when nitrous oxide is used during paediatric anaesthesia.
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Affiliation(s)
- J Armstrong
- Department of Anaesthesia, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - P Jenner
- Department of Anaesthesia, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - S Poulose
- Department of Anaesthesia, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - I K Moppett
- Department of Anaesthesia, Nottingham University Hospitals NHS Trust, Nottingham, UK.,Division of Clinical Neurosciences, University of Nottingham, UK
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Zheng Y, Jin D, Guan Y, Özgüroğlu M, Trukhin D, Poltoratskiy A, Chen Y, Havel L, Hochmair M, Paz-Ares L, Jiang H, Armstrong J, Chen C, Liu Y, Roskos L. P48.21 Population Pharmacokinetics and Exposure-Response with Durvalumab Plus Platinum-Etoposide in ES-SCLC: Results from CASPIAN. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Gatu Johnson M, Aguirre B, Armstrong J, Fooks JA, Forrest C, Frenje JA, Glebov VY, Hoppe M, Katz J, Knauer JP, Martin W, Parker CE, Reynolds HG, Schoff ME, Séguin FH, Sorce C, Sperry B, Stoeckl C, Petrasso RD. Using millimeter-sized carbon-deuterium foils for high-precision deuterium-tritium neutron spectrum measurements in direct-drive inertial confinement fusion at the OMEGA laser facility. Rev Sci Instrum 2021; 92:023503. [PMID: 33648107 DOI: 10.1063/5.0040549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 01/23/2021] [Indexed: 06/12/2023]
Abstract
Millimeter-sized CD foils fielded close (order mm) to inertial confinement fusion (ICF) implosions have been proposed as a game-changer for improving energy resolution and allowing time-resolution in neutron spectrum measurements using the magnetic recoil technique. This paper presents results from initial experiments testing this concept for direct drive ICF at the OMEGA Laser Facility. While the foils are shown to produce reasonable signals, inferred spectral broadening is seen to be high (∼5 keV) and signal levels are low (by ∼20%) compared to expectation. Before this type of foil is used for precision experiments, the foil mount must be improved, oxygen uptake in the foils must be better characterized, and impact of uncontrolled foil motion prior to detection must be investigated.
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Affiliation(s)
- M Gatu Johnson
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - B Aguirre
- Sandia National Laboratories, Albuquerque, New Mexico 87123, USA
| | - J Armstrong
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J A Fooks
- General Atomics, San Diego, California 92186, USA
| | - C Forrest
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J A Frenje
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - V Yu Glebov
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M Hoppe
- General Atomics, San Diego, California 92186, USA
| | - J Katz
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J P Knauer
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - W Martin
- Sandia National Laboratories, Albuquerque, New Mexico 87123, USA
| | - C E Parker
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - H G Reynolds
- General Atomics, San Diego, California 92186, USA
| | - M E Schoff
- General Atomics, San Diego, California 92186, USA
| | - F H Séguin
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - C Sorce
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - B Sperry
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R D Petrasso
- Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA
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Giamberardino W, Winn VD, Armstrong J. Risk factors for clinically significant intra-ventricular hemorrhage in pregnancies complicated by preterm premature rupture of membranes. J Pregnancy Neonatal Med 2021; 5:https://www.alliedacademies.org/articles/risk-factors-for-clinically-significant-intraventricular-hemorrhage-in-pregnancies-complicated-by-preterm-premature-rupt.pdf. [PMID: 35759332 PMCID: PMC9224317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objectives Preterm birth is a major cause of adverse perinatal outcomes, including intraventricular hemorrhage (IVH). IVH has been shown to contribute to lasting neurological disability, however the role of maternal characteristics and potentially modifiable risk factors that contribute to these outcomes have not been well defined. We sought to determine predictors of IVH in pregnancies complicated by early preterm premature rupture of membranes (PPROM). Study design We performed a retrospective cohort study of all singleton pregnancies with early PPROM <32 weeks GA and delivery >22 weeks GA at University of Colorado Hospital (UCH) from 1/1/2007-12/31/2011. Clinically significant IVH (Grade III or IV) was the primary outcome of this study. To determine independent predictors of IVH we created a multivariate model including all univariate covariates with p-value of ≤ 0.10. Results In our cohort (n=229), when adjusted for non-white race, younger maternal age and increased BMI were independent predictors of clinically significant IVH (OR=1.4 CI 1.04-1.79, p=0.03; OR 1.2 CI 1.04-1.33, p=0.01, respectively). Female gender was also found to be an independent predictor of poor 5 minute APGAR (OR=2.3 CI 1.06-5.28, p=0.04). Conclusions In our cohort, infants born to younger mothers or mothers with higher BMI appear to be at increased risk for clinically significant IVH. Interestingly, on further analysis, we found that female newborns had a 2-fold greater risk of poor 5 minute APGAR of less than 7. Given these data, larger studies are warranted to examine modifiable and non-modifiable risk pregnancy that may be associated with IVH and subsequent adverse neurological outcomes in pregnancies complicated by early PPROM.
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Affiliation(s)
- W Giamberardino
- Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, USA
| | - VD Winn
- Department of Obstetrics and Gynecology, Stanford University School of Medicine, USA
| | - J Armstrong
- Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, USA
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, USA
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Bailey P, Armstrong J, Hess O, Pryor R, Auricchio J, Cooper K, Godbout E, Stevens M, Bearman G, Doll M. Buyer beware: hidden costs in deployment of automated hand hygiene technology. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Bailey P, Hess O, Pryor R, Armstrong J, Cooper K, Godbout E, Stevens M, Bearman G, Doll M. Can you see me now?: Medical device radio frequency interference with hand hygiene technology. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Simpson E, Hsu C, Chiang J, Armstrong J, Lu X, Gajjar A, Patay Z, Merchant T, Broniscer A, Baker S, Lucas J, Tinkle C. Genetic Determinants of Clinical Response to Radiation Therapy in Diffuse Intrinsic Pontine Glioma. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Imam Z, Odish F, Gill I, O'Connor D, Armstrong J, Vanood A, Ibironke O, Hanna A, Ranski A, Halalau A. Older age and comorbidity are independent mortality predictors in a large cohort of 1305 COVID-19 patients in Michigan, United States. J Intern Med 2020; 288:469-476. [PMID: 32498135 PMCID: PMC7300881 DOI: 10.1111/joim.13119] [Citation(s) in RCA: 218] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Higher comorbidity and older age have been reported as correlates of poor outcomes in COVID-19 patients worldwide; however, US data are scarce. We evaluated mortality predictors of COVID-19 in a large cohort of hospitalized patients in the United States. DESIGN Retrospective, multicenter cohort of inpatients diagnosed with COVID-19 by RT-PCR from 1 March to 17 April 2020 was performed, and outcome data evaluated from 1 March to 17 April 2020. Measures included demographics, comorbidities, clinical presentation, laboratory values and imaging on admission. Primary outcome was mortality. Secondary outcomes included length of stay, time to death and development of acute kidney injury in the first 48-h. RESULTS The 1305 patients were hospitalized during the evaluation period. Mean age was 61.0 ± 16.3, 53.8% were male and 66.1% African American. Mean BMI was 33.2 ± 8.8 kg m-2 . Median Charlson Comorbidity Index (CCI) was 2 (1-4), and 72.6% of patients had at least one comorbidity, with hypertension (56.2%) and diabetes mellitus (30.1%) being the most prevalent. ACE-I/ARB use and NSAIDs use were widely prevalent (43.3% and 35.7%, respectively). Mortality occurred in 200 (15.3%) of patients with median time of 10 (6-14) days. Age > 60 (aOR: 1.93, 95% CI: 1.26-2.94) and CCI > 3 (aOR: 2.71, 95% CI: 1.85-3.97) were independently associated with mortality by multivariate analyses. NSAIDs and ACE-I/ARB use had no significant effects on renal failure in the first 48 h. CONCLUSION Advanced age and an increasing number of comorbidities are independent predictors of in-hospital mortality for COVID-19 patients. NSAIDs and ACE-I/ARB use prior to admission is not associated with renal failure or increased mortality.
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Affiliation(s)
- Z Imam
- From the, Internal Medicine Department, Beaumont Health, Royal Oak, MI, USA.,Internal Medicine Residents, Beaumont Hospital, Royal Oak, MI, USA
| | - F Odish
- From the, Internal Medicine Department, Beaumont Health, Royal Oak, MI, USA.,Internal Medicine Residents, Beaumont Hospital, Royal Oak, MI, USA
| | - I Gill
- From the, Internal Medicine Department, Beaumont Health, Royal Oak, MI, USA.,Internal Medicine Residents, Beaumont Hospital, Royal Oak, MI, USA
| | - D O'Connor
- From the, Internal Medicine Department, Beaumont Health, Royal Oak, MI, USA.,Internal Medicine Residents, Beaumont Hospital, Royal Oak, MI, USA
| | - J Armstrong
- From the, Internal Medicine Department, Beaumont Health, Royal Oak, MI, USA.,Internal Medicine Residents, Beaumont Hospital, Royal Oak, MI, USA
| | - A Vanood
- Oakland University William Beaumont School of Medicine, Rochester, MI, USA
| | - O Ibironke
- Oakland University William Beaumont School of Medicine, Rochester, MI, USA
| | - A Hanna
- From the, Internal Medicine Department, Beaumont Health, Royal Oak, MI, USA.,Internal Medicine Residents, Beaumont Hospital, Royal Oak, MI, USA
| | - A Ranski
- Oakland University William Beaumont School of Medicine, Rochester, MI, USA
| | - A Halalau
- From the, Internal Medicine Department, Beaumont Health, Royal Oak, MI, USA.,Oakland University William Beaumont School of Medicine, Rochester, MI, USA.,Department of Medicine, Oakland University William Beaumont School of Medicine, Royal Oak, MI, USA
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Armstrong J. Classifying financial markets up to isomorphism. Proc Math Phys Eng Sci 2020. [DOI: 10.1098/rspa.2020.0264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Two markets should be considered isomorphic if they are financially indistinguishable. We define a notion of isomorphism for financial markets in both discrete and continuous time. We then seek to identify the distinct isomorphism classes, that is to classify markets. We classify complete one-period markets. We define an invariant of continuous-time complete markets which we call the absolute market price of risk. This invariant plays a role analogous to the curvature in Riemannian geometry. We classify markets when the absolute market price of risk is deterministic. We show that, in general, markets with non-trivial automorphism groups admit mutual fund theorems. We prove a number of such theorems.
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Guppy-Coles K, Johnstone M, Prasad S, Smith K, Lo A, Truloff T, Armstrong J, Atherton J. 342 Feasibility and Accuracy of Assessing Left Ventricular Systolic Function by Measuring Left Ventricular Ejection Fraction Using a Hand-held Echocardiography Device With an Automated Algorithm. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Cunningham SA, Evans MJ, Neave M, Armstrong J, Barton PS. Pollination and resource limitation as interacting constraints on almond fruit set. Plant Biol (Stuttg) 2020; 22:113-119. [PMID: 31520511 DOI: 10.1111/plb.13045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/18/2019] [Indexed: 06/10/2023]
Abstract
Pollination and resource availability are factors determining reproductive success of plants, and in agriculture these factors influence yield of fruit-bearing crops. Our understanding of the importance of crop pollination is fast improving, but less is known about how the interaction between pollination and resources constrains fruit production. We conducted an experiment with almond trees (Prunus dulcis) to examine how the number of flowers, light availability and competition for resources affected nut (fruit) production on individual spurs (fruit-bearing structures) exposed to open-pollination or hand-pollination. We found a positive relationship between flower number and nut number on spurs with up to four flowers, but no further benefit after four flowers, suggesting a resource threshold expressed by individual spurs. Spurs with few flowers increased the conversion rate of flowers to nuts when supplemented with hand-pollination, but spurs with more flowers were more likely to achieve the threshold number of nuts even under open-pollination. Our experiment included a further treatment involving spraying whole trees with pollen. This treatment reduced nut production by spurs with many flowers and high light availability, suggesting competition is experienced by well-resourced spurs when resources need to be shared among developing nuts across the whole tree. Our study supports the hypothesis that excess flower production in fruit trees increases the potential for fruit production when pollinator and resource availability is variable (bet-hedging). Spurs with more flowers typically produce more nuts (within a limited range), but only if both resources and pollen supply increase with flower number. For almond growers, a focus on maintaining high flower numbers, especially in high light regions of the canopy, is the foundation for high levels of production. Strategies to lift flower number and light are complicated by trade-offs inherent in tree architecture and orchard design. However, fruit set would be lifted above that achieved by current practice by an increase in the pollination rate of flowers.
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Affiliation(s)
- S A Cunningham
- Fenner School of Environment and Society, The Australian National University, Canberra, ACT, Australia
| | - M J Evans
- Fenner School of Environment and Society, The Australian National University, Canberra, ACT, Australia
| | - M Neave
- Land and Water, CSIRO, Canberra, ACT, Australia
| | - J Armstrong
- Land and Water, CSIRO, Canberra, ACT, Australia
| | - P S Barton
- Fenner School of Environment and Society, The Australian National University, Canberra, ACT, Australia
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Ellis R, Tang D, Nasr B, Greenwood A, McConnell A, Anagnostou M, Elias M, Verykiou S, Bajwa D, Ewen T, Reynolds N, Barrett P, Carling E, Watson G, Armstrong J, Allen A, Horswell S, Labus M, Lovat P. 测量两种蛋白质, 帮助评估哪种黑色素瘤最有可能传播. Br J Dermatol 2020. [DOI: 10.1111/bjd.18675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Ellis R, Tang D, Nasr B, Greenwood A, McConnell A, Anagnostou M, Elias M, Verykiou S, Bajwa D, Ewen T, Reynolds N, Barrett P, Carling E, Watson G, Armstrong J, Allen A, Horswell S, Labus M, Lovat P. Measuring two proteins to help assess which melanomas are most likely to spread. Br J Dermatol 2020. [DOI: 10.1111/bjd.18658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Paz-Ares L, Chen Y, Reinmuth N, Hotta K, Trukhin D, Statsenko G, Hochmair M, Özgüroğlu M, Ji J, Voitko O, Poltoratskiy A, Ponce S, Verderame F, Havel L, Bondarenko I, Kazarnowicz A, Losonczy G, Conev N, Armstrong J, Byrne N, Shire N, Jiang H, Goldman J. PL02.11 Overall Survival with Durvalumab Plus Etoposide-Platinum in First-Line Extensive-Stage SCLC: Results from the CASPIAN Study. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Maronge L, Armstrong J. Physical properties of paediatric cuffed endotracheal tubes. Br J Anaesth 2019. [DOI: 10.1016/j.bja.2019.05.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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28
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Vidal S, Brandi N, Pacheco P, Maynou J, Fernandez G, Xiol C, Pascual-Alonso A, Pineda M, Armstrong J, Garcia-Cazorla À, del Carmen Serrano Munuera M, García SC, Troncoso M, Fariña G, García Peñas JJ, Fournier BG, León SR, Guitart M, Baena N, de Nanclares GP, Oci IO, Gutiérrez-Delicado E, Abarrategui B, Barroso E, Santos-Simarro F, Lapunzina P, García FJ, Acedo JM, García A, Martinez MA, Martínez-Bermejo A. The most recurrent monogenic disorders that overlap with the phenotype of Rett syndrome. Eur J Paediatr Neurol 2019; 23:609-620. [PMID: 31105003 DOI: 10.1016/j.ejpn.2019.04.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/12/2019] [Accepted: 04/28/2019] [Indexed: 12/30/2022]
Abstract
Rett syndrome (RTT) is an early-onset neurodevelopmental disorder that is caused by mutations in the MECP2 gene; however, defects in other genes (CDKL5 and FOXG1) can lead to presentations that resemble classic RTT, although they are not completely identical. Here, we attempted to identify other monogenic disorders that share features of RTT. A total of 437 patients with a clinical diagnosis of RTT-like were studied; in 242 patients, a custom panel with 17 genes related to an RTT-like phenotype was run via a HaloPlex-Target-Enrichment-System. In the remaining 195 patients, a commercial TruSight-One-Sequencing-Panel was analysed. A total of 40 patients with clinical features of RTT had variants which affect gene function in six genes associated with other monogenic disorders. Twelve patients had variants in STXBP1, nine in TCF4, six in SCN2A, five in KCNQ2, four in MEF2C and four in SYNGAP1. Genetic studies using next generation sequencing (NGS) allowed us to study a larger number of genes associated with RTT-like simultaneously, providing a genetic diagnosis for a wider group of patients. These new findings provide the clinician with more information and clues that could help in the prevention of future symptoms or in pharmacologic therapy.
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Affiliation(s)
- S Vidal
- Sant Joan de Déu Research Foundation, Barcelona, Spain; Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
| | - N Brandi
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - P Pacheco
- Molecular and Genetics Medicine Section, Hospital Sant Joan de Déu, Barcelona, Spain
| | - J Maynou
- Molecular and Genetics Medicine Section, Hospital Sant Joan de Déu, Barcelona, Spain; Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
| | - G Fernandez
- Molecular and Genetics Medicine Section, Hospital Sant Joan de Déu, Barcelona, Spain; Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
| | - C Xiol
- Sant Joan de Déu Research Foundation, Barcelona, Spain; Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
| | - A Pascual-Alonso
- Sant Joan de Déu Research Foundation, Barcelona, Spain; Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain
| | - M Pineda
- Sant Joan de Déu Research Foundation, Barcelona, Spain
| | | | - J Armstrong
- Molecular and Genetics Medicine Section, Hospital Sant Joan de Déu, Barcelona, Spain; Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Barcelona, Spain; CIBER-ER (Biomedical Network Research Center for Rare Diseases), Institute of Health Carlos III (ISCIII), Madrid, Spain.
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Armstrong J. Bioenergetic cellular index: a clinical biomarker to identify metabolic adaption in melanoma? Br J Dermatol 2019; 181:15-16. [DOI: 10.1111/bjd.17843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- J. Armstrong
- Faculty of Health Sciences and Wellbeing University of Sunderland Sciences Complex City Campus Sunderland SR1 3SD U.K
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30
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Ellis R, Tang D, Nasr B, Greenwood A, McConnell A, Anagnostou ME, Elias M, Verykiou S, Bajwa D, Ewen T, Reynolds NJ, Barrett P, Carling E, Watson G, Armstrong J, Allen AJ, Horswell S, Labus M, Lovat PE. Epidermal autophagy and beclin 1 regulator 1 and loricrin: a paradigm shift in the prognostication and stratification of the American Joint Committee on Cancer stage I melanomas. Br J Dermatol 2019; 182:156-165. [PMID: 31056744 PMCID: PMC6973157 DOI: 10.1111/bjd.18086] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND The updated American Joint Committee on Cancer (AJCC) staging criteria for melanoma remain unable to identify high-risk stage I tumour subsets. OBJECTIVES To determine the utility of epidermal autophagy and beclin 1 regulator 1 (AMBRA1)/loricrin (AMLo) expression as a prognostic biomarker for AJCC stage I cutaneous melanoma. METHODS Peritumoral AMBRA1 expression was evaluated in a retrospective discovery cohort of 76 AJCC stage I melanomas. AMLo expression was correlated with clinical outcomes up to 12 years in two independent powered, retrospective validation and qualification cohorts comprising 379 AJCC stage I melanomas. RESULTS Decreased AMBRA1 expression in the epidermis overlying primary melanomas in a discovery cohort of 76 AJCC stage I tumours was associated with a 7-year disease-free survival (DFS) rate of 81·5% vs. 100% survival with maintained AMBRA1 (P < 0·081). Following an immunohistochemistry protocol for semi-quantitative analysis of AMLo, analysis was undertaken in validation (n = 218) and qualification cohorts (n = 161) of AJCC stage I melanomas. Combined cohort analysis revealed a DFS rate of 98·3% in the AMLo low-risk group (n = 239) vs. 85·4% in the AMLo high-risk cohort (n = 140; P < 0·001). Subcohort multivariate analysis revealed that an AMLo hazard ratio (HR) of 4·04 [95% confidence interval (CI) 1·69-9·66; P = 0·002] is a stronger predictor of DFS than Breslow depth (HR 2·97, 95% CI 0·93-9·56; P = 0·068) in stage IB patients. CONCLUSIONS Loss of AMLo expression in the epidermis overlying primary AJCC stage I melanomas identifies high-risk tumour subsets independently of Breslow depth. What's already known about this topic? There is an unmet clinical need for biomarkers of early-stage melanoma. Autophagy and beclin 1 regulator 1 (AMBRA1) is a proautophagy regulatory protein with known roles in cell proliferation and differentiation, and is a known tumour suppressor. Loricrin is a marker of epidermal terminal differentiation. What does this study add? AMBRA1 has a functional role in keratinocyte/epidermal proliferation and differentiation. The combined decrease/loss of peritumoral AMBRA1 and loricrin is associated with a significantly increased risk of metastatic spread in American Joint Committee on Cancer (AJCC) stage I tumours vs. melanomas, in which peritumoral AMBRA1 and loricrin are maintained, independently of Breslow depth. What is the translational message? The integration of peritumoral epidermal AMBRA1/loricrin biomarker expression into melanoma care guidelines will facilitate more accurate, personalized risk stratification for patients with AJCC stage I melanomas, thereby facilitating stratification for appropriate follow-up and informing postdiagnostic investigations, including sentinel lymph node biopsy, ultimately resulting in improved disease outcomes and rationalization of healthcare costs.
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Affiliation(s)
- R Ellis
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K.,Department of Dermatology, James Cook University Hospital, Middlesbrough, U.K
| | - D Tang
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K.,Department of Dermatology, James Cook University Hospital, Middlesbrough, U.K
| | - B Nasr
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K.,Department of Pathology, University of North Durham Hospital, Durham, U.K
| | - A Greenwood
- Department of Pathology, James Cook University Hospital, Middlesbrough, U.K
| | - A McConnell
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - M E Anagnostou
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - M Elias
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - S Verykiou
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - D Bajwa
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - T Ewen
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - N J Reynolds
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - P Barrett
- Department of Pathology, University of North Durham Hospital, Durham, U.K
| | - E Carling
- Department of Pathology, St James's University Hospital, Leeds, U.K
| | - G Watson
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K.,Department of Pathology, James Cook University Hospital, Middlesbrough, U.K
| | - J Armstrong
- Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland, U.K
| | - A J Allen
- NIHR Newcastle In Vitro Diagnostics Co-operative, Newcastle University, Newcastle upon Tyne, U.K
| | - S Horswell
- Bioinformatics and Bio Statistics Group, The Francis Crick Institute, London, U.K
| | - M Labus
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - P E Lovat
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, U.K
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Keys M, O'Sullivan S, Dermott RM, Wallace N, Dunne M, Armstrong J, Thirion P. EP-1354 Impact of Pulmonary SABR on Pulmonary Function Tests: Report of a single institution experience. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31774-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Guppy-Coles K, Prasad S, Lo A, Smith K, Truloff T, Beard P, Armstrong J, Atherton J. Feasibility and Accuracy of Assessing Left Ventricular Systolic Function by Measuring Mitral Annular Excursion using a Hand-Held Echocardiography Device with an Automated Atrioventricular-Plane Tracking Algorithm. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Armstrong K, Ward J, Hughes N, Mihai A, Blayney A, Mascott C, Kileen R, Armstrong J. Guidelines for Clinical Target Volume Definition for Perineural Spread of Major Salivary Gland Cancers. Clin Oncol (R Coll Radiol) 2018; 30:773-779. [DOI: 10.1016/j.clon.2018.08.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 07/23/2018] [Accepted: 07/23/2018] [Indexed: 12/25/2022]
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Affiliation(s)
- B. J. Wiley
- Science and Advanced Technology Laboratory, US Army Natick Research and Development Laboratories, Natick, Massachusetts 01760
| | - R. L. Hebert
- Science and Advanced Technology Laboratory, US Army Natick Research and Development Laboratories, Natick, Massachusetts 01760
| | - J. Armstrong
- Science and Advanced Technology Laboratory, US Army Natick Research and Development Laboratories, Natick, Massachusetts 01760
| | - A. M. Kaplan
- Science and Advanced Technology Laboratory, US Army Natick Research and Development Laboratories, Natick, Massachusetts 01760
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Lee KA, Dunne M, Small C, Kelly PJ, McArdle O, O’Sullivan J, Hacking D, Pomeroy M, Armstrong J, Moriarty M, Clayton-Lea A, Parker I, Collins CD, Thirion P. (ICORG 05-03): prospective randomized non-inferiority phase III trial comparing two radiation schedules in malignant spinal cord compression (not proceeding with surgical decompression); the quality of life analysis. Acta Oncol 2018; 57:965-972. [PMID: 29419331 DOI: 10.1080/0284186x.2018.1433320] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The optimal primary external beam radiation therapy (EBRT) radiation schedule for malignant epidural spinal cord compression (MSCC) remains to be determined. The ICORG 05-03 trial assessed if a 10 Gy single fraction radiation schedule was not inferior to one with 20 Gray (Gy) in five daily fractions, in terms of functional motor outcome, for the treatment of MSCC in patients not proceeding with surgical decompression. This article reports on two of the secondary endpoints, Quality of life (QoL), assessed according to the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core 30 (QLQ-C30) version 3.0 (EORTC Data Center, Brussels, Belgium) and pain control assessed using a visual analog scale. METHODS A randomized, parallel group, multicenter phase III trial was conducted by Cancer Trials Ireland (formerly All-Ireland Cooperative Oncology Research Group, ICORG), across five hospital sites in Ireland and Northern Ireland. Patients were randomized to 10 Gy single fraction of EBRT or 20 Gy in five fractions in a 1:1 ratio. Patients with baseline and 5-week follow up QoL data are included in this analysis. FINDINGS From 2006 to 2014, 112 eligible patients were enrolled for whom 57 were evaluated for this secondary analysis. After adjusting for pre-intervention scores, there was no statistically significant difference in post-treatment Summary scores (excl. FI and QL), or pain scores between the two RT schedules at 5 weeks and 3 months following EBRT. There was a statistically significant relationship between the pretreatment and post-treatment Summary scores (p = .002) but not between the pre-treatment and post-treatment pain scores. INTERPRETATION Primary radiotherapy for the treatment of MSCC significantly improves QoL in patients not proceeding with surgical decompression. After adjusting for pre-intervention scores, there was no statistically significant difference between a 10 Gy single fraction radiation schedule and one with 20 Gy in five daily fractions on post-treatment QoL Summary scores. For most patients, an effective treatment with low burden would be desirable. A single fraction schedule should be considered for this group of patients.
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Affiliation(s)
- K. A. Lee
- Radiation Oncology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland
| | - M. Dunne
- Clinical Trials Unit, St Luke’s Radiation Oncology Network, Dublin, Ireland
| | - C. Small
- Radiation Oncology Department, Galway University Hospital, Galway, Ireland
| | - P. J. Kelly
- Radiation Oncology Department, Cork University Hospital, Cork, Ireland
| | - O. McArdle
- Radiation Oncology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland
| | - J. O’Sullivan
- Radiation Oncology Department, Belfast City Hospital, Belfast, UK
| | - D. Hacking
- Radiation Oncology Department, Whitfield Clinic, Waterford, Ireland
| | - M. Pomeroy
- Radiation Oncology Department, Galway University Hospital, Galway, Ireland
| | - J. Armstrong
- Radiation Oncology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland
| | - M. Moriarty
- Radiation Oncology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland
| | - A. Clayton-Lea
- Operational Services, St Luke’s Radiation Oncology Network, Dublin, Ireland
| | - I. Parker
- Radiation Oncology Department, All Ireland Cooperative Oncology Research Group, Dublin, Ireland
| | - C. D. Collins
- Radiology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland
| | - P. Thirion
- Radiation Oncology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland
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O'Malley AJ, Sarwar M, Armstrong J, Catlow CRA, Silverwood IP, York APE, Hitchcock I. Comparing ammonia diffusion in NH 3-SCR zeolite catalysts: a quasielastic neutron scattering and molecular dynamics simulation study. Phys Chem Chem Phys 2018; 20:11976-11986. [PMID: 29670963 DOI: 10.1039/c8cp01022f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diffusion of ammonia in the small pore zeolite and potential commercial NH3-SCR catalyst levynite (LEV) was measured and compared with its mobility in the chabazite (CHA) topology (more established in NOx abatement catalysis), using quasielastic neutron scattering (QENS) and molecular dynamics (MD) simulations at 273, 323 and 373 K. The QENS experiments suggest that mobility in LEV is dominated by jump diffusion through the 8-ring windows between cages (as previously observed in CHA) which takes place at very similar rates in the two zeolites, yielding similar experimental self-diffusion coefficients (Ds). After confirming that the same characteristic motions are observed between the MD simulations and the QENS experiments on the picosecond scale, the simulations suggest that on the nanoscale, the diffusivity is higher by a factor of ∼2 in the CHA framework than in LEV. This difference between zeolites is primarily explained by the CHA cages having six 8-ring windows in the building unit, compared to only three such windows in the LEV cage building unit, thereby doubling the geometric opportunities to perform jump diffusion between cages (as characterised by the QENS experiments) leading to the corresponding increase in the MD calculated Ds. The techniques illustrate the importance of probing both pico- and nanoscale dynamics when studying intracrystalline diffusion in both NH3-SCR catalyst design, and in porous materials generally, where notable consistencies and differences may be found on either scale.
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Affiliation(s)
- A J O'Malley
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK. and UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0FA, UK
| | - M Sarwar
- Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading RG4 9NH, UK.
| | - J Armstrong
- ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxon OX11 0QX, UK
| | - C R A Catlow
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK. and UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0FA, UK and University College London, Department of Chemistry, Materials Chemistry, Third Floor, Kathleen Lonsdale Building, Gower Street, London WC1E 6BT, UK
| | - I P Silverwood
- UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0FA, UK and ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxon OX11 0QX, UK
| | - A P E York
- Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading RG4 9NH, UK.
| | - I Hitchcock
- Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading RG4 9NH, UK.
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Chalmers JR, Thomas KS, Apfelbacher C, Williams HC, Prinsen CA, Spuls PI, Simpson E, Gerbens LAA, Boers M, Barbarot S, Stalder JF, Abuabara K, Aoki V, Ardeleanu M, Armstrong J, Bang B, Berents TL, Burton T, Butler L, Chubachi T, Cresswell-Melville A, DeLozier A, Eckert L, Eichenfield L, Flohr C, Futamura M, Gadkari A, Gjerde ES, van Halewijn KF, Hawkes C, Howells L, Howie L, Humphreys R, Ishii HA, Kataoka Y, Katayama I, Kouwenhoven W, Langan SM, Leshem YA, Merhand S, Mina-Osorio P, Murota H, Nakahara T, Nunes FP, Nygaard U, Nygårdas M, Ohya Y, Ono E, Rehbinder E, Rogers NK, Romeijn GLE, Schuttelaar MLA, Sears AV, Simpson MA, Singh JA, Srour J, Stuart B, Svensson Å, Talmo G, Talmo H, Teixeira HD, Thyssen JP, Todd G, Torchet F, Volke A, von Kobyletzki L, Weisshaar E, Wollenberg A, Zaniboni M. Report from the fifth international consensus meeting to harmonize core outcome measures for atopic eczema/dermatitis clinical trials (HOME initiative). Br J Dermatol 2018; 178:e332-e341. [PMID: 29672835 DOI: 10.1111/bjd.16543] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2018] [Indexed: 12/11/2022]
Abstract
This is the report from the fifth meeting of the Harmonising Outcome Measures for Eczema initiative (HOME V). The meeting was held on 12-14 June 2017 in Nantes, France, with 81 participants. The main aims of the meeting were (i) to achieve consensus over the definition of the core domain of long-term control and how to measure it and (ii) to prioritize future areas of research for the measurement of the core domain of quality of life (QoL) in children. Moderated whole-group and small-group consensus discussions were informed by presentations of qualitative studies, systematic reviews and validation studies. Small-group allocations were performed a priori to ensure that each group included different stakeholders from a variety of geographical regions. Anonymous whole-group voting was carried out using handheld electronic voting pads according to predefined consensus rules. It was agreed by consensus that the long-term control domain should include signs, symptoms, quality of life and a patient global instrument. The group agreed that itch intensity should be measured when assessing long-term control of eczema in addition to the frequency of itch captured by the symptoms domain. There was no recommendation of an instrument for the core outcome domain of quality of life in children, but existing instruments were assessed for face validity and feasibility, and future work that will facilitate the recommendation of an instrument was agreed upon.
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Affiliation(s)
- J R Chalmers
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, U.K
| | - K S Thomas
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, U.K
| | - C Apfelbacher
- Medical Sociology, Institute of Epidemiology and Preventive Medicine, University of Regensburg, Regensburg, Germany
| | - H C Williams
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, U.K
| | - C A Prinsen
- Department of Epidemiology and Biostatistics, EMGO+ Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands
| | - P I Spuls
- Department of Dermatology, Academic Medical Center, Amsterdam, the Netherlands
| | - E Simpson
- Department of Dermatology, Oregon Health and Science University, Portland, OR, U.S.A
| | - L A A Gerbens
- Department of Dermatology, Academic Medical Center, Amsterdam, the Netherlands
| | - M Boers
- VU University Medical Center, Amsterdam, the Netherlands
| | - S Barbarot
- Department of Dermatology, Nantes University Hospital (CHU de Nantes), France
| | - J F Stalder
- Department of Dermatology, Nantes University Hospital (CHU de Nantes), France
| | - K Abuabara
- Department of Dermatology, University of California San Francisco, San Francisco, CA, U.S.A
| | - V Aoki
- University of São Paulo Medical School, São Paulo, Brazil
| | - M Ardeleanu
- Regeneron Pharmaceuticals, Tarrytown, NY, U.S.A
| | | | - B Bang
- LEO Pharma, Ballerup, Denmark
| | | | | | - L Butler
- National Eczema Association, San Rafael, CA, U.S.A
| | - T Chubachi
- GlaxoSmithKline, Research Triangle Park, NC, U.S.A
| | | | - A DeLozier
- Eli Lilly and Company, Indianapolis, IN, U.S.A
| | | | - L Eichenfield
- Rady Children's Hospital, University of California San Francisco, San Diego, CA, U.S.A
| | - C Flohr
- St John's Institute of Dermatology, St Thomas' Hospital, London, U.K
| | | | - A Gadkari
- Regeneron Pharmaceuticals, Tarrytown, NY, U.S.A
| | - E S Gjerde
- The Psoriasis and Eczema Association of Norway, Oslo, Norway
| | - K F van Halewijn
- Erasmus MC, University Medical Centre, Rotterdam, the Netherlands
| | | | - L Howells
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, U.K
| | - L Howie
- Global Parents for Eczema Research, Brisbane, Australia
| | | | - H A Ishii
- Brazilian Atopic Dermatitis Association (AADA), São Paulo, Brazil
| | - Y Kataoka
- Osaka Prefectural Medical Center for Respiratory and Allergic Disease, Osaka, Japan
| | | | - W Kouwenhoven
- Dutch Association for People with Atopic Dermatitis, Nijkerk, the Netherlands
| | - S M Langan
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, U.K
| | - Y A Leshem
- Beilinson Hospital and Tel Aviv University, Petah Tikva and Tel Aviv, Israel
| | - S Merhand
- Association Française de l'Eczéma, Redon, France
| | | | - H Murota
- Department of Dermatology, Osaka University, Suita, Japan
| | - T Nakahara
- Department of Dermatology, Kyushu University, Fukuoka, Japan
| | - F P Nunes
- Eli Lilly and Company, Indianapolis, IN, U.S.A
| | - U Nygaard
- Eli Lilly and Company, Indianapolis, IN, U.S.A
| | | | - Y Ohya
- National Centre for Child Health and Development, Tokyo, Japan
| | - E Ono
- Osaka University, Osaka, Japan
| | - E Rehbinder
- Department of Dermatology, Oslo University Hospital, Oslo, Norway
| | - N K Rogers
- Centre of Evidence Based Dermatology, University of Nottingham, Nottingham, U.K
| | - G L E Romeijn
- Department of Dermatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - M L A Schuttelaar
- Department of Dermatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - A V Sears
- St John's Institute of Dermatology, St Thomas' Hospital, London, U.K
| | | | - J A Singh
- Department of Medicine, University of Alabama at Birmingham and Birmingham Veterans Affairs Medical Center, Birmingham, AL, U.S.A
| | - J Srour
- Klinik und Poliklinik für Dermatologie und Allergologie der LMU - München, Munich, Germany
| | - B Stuart
- Primary Care and Population Sciences Division, University of Southampton, Southampton, U.K
| | - Å Svensson
- Department of Dermatology and Venereology, Lund University, Malmö, Sweden
| | - G Talmo
- The Psoriasis and Eczema Association of Norway, Haugesund, Norway
| | - H Talmo
- The Psoriasis and Eczema Association of Norway, Haugesund, Norway
| | | | - J P Thyssen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, Hellerup, Denmark
| | - G Todd
- University of Cape Town, Cape Town, South Africa
| | - F Torchet
- Association Française de l'Eczéma, Redon, France
| | - A Volke
- Department of Dermatology, University of Tartu, Tartu, Estonia
| | - L von Kobyletzki
- Department of Dermatology, Lund University, Skåne University Hospital, Malmö, Sweden.,Department of Public Health Sciences, Karlstad University, Karlstad, Sweden.,CF Wahlgren, Dermatology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.,Karolinska University Hospital, Stockholm, Sweden.,Department of Dermatology, Venereology and Allergy University Hospital Schleswig-Holstein, Kiel, Germany
| | - E Weisshaar
- Department of Social Medicine, Occupational and Environmental Dermatology, Ruprecht Karls University, Heidelberg, Germany
| | | | - M Zaniboni
- University of São Paulo, Campinas, Brazil
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Ulate-Campos A, Petanas-Argemi J, Rebollo-Polo M, Jou C, Sierra C, Armstrong J, Fons-Estupina MC. [X-linked adrenoleukodystrophy with an atypical radiological pattern]. Rev Neurol 2018; 66:237-240. [PMID: 29557549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
INTRODUCTION X-linked adrenoleukodystrophy (X-ALD) is the most frequent peroxisomal disease. It is due to a mutation in the ABCD1 gene. The loss of functioning of ABCD1 triggers ineffective beta oxidation of very long-chain fatty acids, which gives rise to an accumulation of these fatty acids. The typical alteration revealed in neuroimaging scans in the cerebral form is symmetrical periventricular demyelination with posterior location. CASE REPORT We report the case of a 10-year-old boy with right spastic hemiparesis and subacute cognitive impairment. Magnetic resonance imaging of the brain showed symmetrical involvement of the white matter in the left frontoparietotemporal region, and calcifications were observed in the computerised axial tomography scan. X-ALD was confirmed by means of the elevated levels of very long-chain fatty acids, and a pathogenic variant was found in the ABCD1 gene. CONCLUSIONS Symmetrical demyelination with calcifications has rarely been reported in X-ALD, and these findings could delay diagnosis. This exceptional presentation should always be taken into consideration in children with subacute onset of motor symptoms and cognitive or behavioural regression.
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Affiliation(s)
- A Ulate-Campos
- CIBERER. Centro de Investigacion Biomedica en Red-Enfermedades Raras, Barcelona, Espana
- Hospital Sant Joan de Deu, Esplugues de Llobregat, Espana
- Hospital Nacional de Ninos , San Jose, Costa Rica
| | - J Petanas-Argemi
- CIBERER. Centro de Investigacion Biomedica en Red-Enfermedades Raras, Barcelona, Espana
- Hospital Sant Joan de Deu, Esplugues de Llobregat, Espana
| | - M Rebollo-Polo
- Hospital Sant Joan de Deu, Esplugues de Llobregat, Espana
| | - C Jou
- Hospital Sant Joan de Deu, Esplugues de Llobregat, Espana
| | - C Sierra
- CIBERER. Centro de Investigacion Biomedica en Red-Enfermedades Raras, Barcelona, Espana
- Hospital Sant Joan de Deu, Esplugues de Llobregat, Espana
| | - J Armstrong
- CIBERER. Centro de Investigacion Biomedica en Red-Enfermedades Raras, Barcelona, Espana
- Hospital Sant Joan de Deu, Esplugues de Llobregat, Espana
| | - M C Fons-Estupina
- CIBERER. Centro de Investigacion Biomedica en Red-Enfermedades Raras, Barcelona, Espana
- Hospital Sant Joan de Deu, Esplugues de Llobregat, Espana
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Burton C, Burton C, Young R, Thomas C, Na C, Shepard V, Shen H, Armstrong J, Ogar J, Hadley L. Reduction of Off-Label Use of Antipsychotics in a Long Term Care Facility. J Am Med Dir Assoc 2018. [DOI: 10.1016/j.jamda.2017.12.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
We explain how Itô stochastic differential equations (SDEs) on manifolds may be defined using 2-jets of smooth functions. We show how this relationship can be interpreted in terms of a convergent numerical scheme. We also show how jets can be used to derive graphical representations of Itô SDEs, and we show how jets can be used to derive the differential operators associated with SDEs in a coordinate-free manner. We relate jets to vector flows, giving a geometric interpretation of the Itô–Stratonovich transformation. We show how percentiles can be used to give an alternative coordinate-free interpretation of the coefficients of one-dimensional SDEs. We relate this to the jet approach. This allows us to interpret the coefficients of SDEs in terms of ‘fan diagrams’. In particular, the median of an SDE solution is associated with the drift of the SDE in Stratonovich form for small times.
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Affiliation(s)
- J. Armstrong
- Department of Mathematics, King’s College London, London WC2R 2LS, UK
| | - D. Brigo
- Department of Mathematics, Imperial College London, London SW7 2AZ, UK
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Coppock C, Singh S, Guppy-Coles K, Armstrong J, Beard P, Atherton J. Correlation Between Key Diastolic Parameters and Outcomes in Patients with Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Parnell J, Perez M, Armstrong J, Bullock L, Feldmann J, Boyce AJ. A black shale protolith for gold-tellurium mineralisation in the Dalradian Supergroup (Neoproterozoic) of Britain and Ireland. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/03717453.2017.1404682] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J. Parnell
- School of Geosciences, University of Aberdeen, Aberdeen, UK
| | - M. Perez
- Trace Element Speciation Laboratory (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, UK
| | - J. Armstrong
- School of Geosciences, University of Aberdeen, Aberdeen, UK
| | - L. Bullock
- School of Geosciences, University of Aberdeen, Aberdeen, UK
| | - J. Feldmann
- Trace Element Speciation Laboratory (TESLA), Department of Chemistry, University of Aberdeen, Aberdeen, UK
| | - A. J. Boyce
- Scottish Universities Environmental Research Centre, East Kilbride, Glasgow, UK
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Kelly C, Feighery R, McCaffrey J, Higgins M, Smith M, O'Reilly S, Murphy C, Horgan A, Walshe J, McDermott R, O'Donnell D, Morris P, Keane M, Martin M, Duffy K, Mihai A, Armstrong J, Mulroe E, Murphy V, Kelly C. Do oncology patients understand clinical trials? A nationwide study by Cancer Trials Ireland. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx440.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kelly C, Feighery R, McCaffrey J, Higgins M, Smith M, O'Reilly S, Horgan A, Walshe J, McDermott R, O'Donnell D, Morris P, Keane M, Martin M, Murphy C, Duffy K, Mihai A, Armstrong J, Mulroe E, Murphy V, Kelly C. Decisions and supports around clinical trial participation: A national study by Cancer Trials Ireland. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx385.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Godin J, Theou O, Armstrong J, Andrew M. UNDERSTANDING THE RELATIONSHIP BETWEEN RETIREMENT AND COGNITIVE HEALTH. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J. Godin
- Nova Scotia Health Authority, Halifax, Nova Scotia, Canada,
| | - O. Theou
- Dalhousie University, Halifax, Nova Scotia, Canada
| | - J. Armstrong
- Dalhousie University, Halifax, Nova Scotia, Canada
| | - M. Andrew
- Nova Scotia Health Authority, Halifax, Nova Scotia, Canada,
- Dalhousie University, Halifax, Nova Scotia, Canada
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Díez H, Cortès-Saladelafont E, Ormazábal A, Marmiese AF, Armstrong J, Matalonga L, Bravo M, Briones P, Emperador S, Montoya J, Artuch R, Giros M, Garcia-Cazorla À. Severe infantile parkinsonism because of a de novo mutation on DLP1
mitochondrial-peroxisomal protein. Mov Disord 2017; 32:1108-1110. [DOI: 10.1002/mds.27021] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 02/22/2017] [Accepted: 03/13/2017] [Indexed: 01/19/2023] Open
Affiliation(s)
- H. Díez
- Synaptic Metabolism Laboratory; Hospital Sant Joan de Déu, Institut de Recerca Pediatric; Barcelona Spain
| | - E. Cortès-Saladelafont
- Department of Neurology; Hospital Sant Joan de Déu, Institut de Recerca Pediatric; Barcelona Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
| | - A. Ormazábal
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Department of Clinical Biochemistry and Institut d'Investigació Sanitària Sant Joan de Déu; Hospital Sant Joan de Déu; Barcelona Spain
| | - A. Fernández Marmiese
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Unit of Diagnosis and Treatment of Congenital Metabolic Diseases; Department of Pediatrics, Hospital Clínico Universitario de Santiago de Compostela; Santiago de Compostela Spain
| | - J. Armstrong
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Department of Clinical Biochemistry and Institut d'Investigació Sanitària Sant Joan de Déu; Hospital Sant Joan de Déu; Barcelona Spain
| | - Leslie Matalonga
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Hospital Clinic-IBC, IDIBAPS; Barcelona Spain
| | - Miren Bravo
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Hospital Clinic-IBC, IDIBAPS; Barcelona Spain
| | - Paz Briones
- Institut de Bioquímica Clínica; Hospital Clínic i Provincial; Barcelona Spain
| | - Sonia Emperador
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Department of Biochemistry; Molecular and Cellular Biology, Universidad de Zaragoza; Zaragoza Spain
| | - Julio Montoya
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Department of Biochemistry; Molecular and Cellular Biology, Universidad de Zaragoza; Zaragoza Spain
| | - Rafael Artuch
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Department of Clinical Biochemistry and Institut d'Investigació Sanitària Sant Joan de Déu; Hospital Sant Joan de Déu; Barcelona Spain
| | - Marisa Giros
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
- Hospital Clinic-IBC, IDIBAPS; Barcelona Spain
| | - Àngels Garcia-Cazorla
- Synaptic Metabolism Laboratory; Hospital Sant Joan de Déu, Institut de Recerca Pediatric; Barcelona Spain
- Department of Neurology; Hospital Sant Joan de Déu, Institut de Recerca Pediatric; Barcelona Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras; Instituto de Salud Carlos III; Barcelona Spain
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Lin A, Kwan C, Armstrong J, Sippel J, Thomas L, Atherton J, Prasad S. Minimum Left Atrial Volume Shows a Better Correlation with Invasively and Non-Invasively Measured LV Filling Pressures than Maximal Left Atrial Volume in Patients with Myocardial Infarction. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gloster A, Armstrong J. Menus of Change University Research Collaborative. J Acad Nutr Diet 2016. [DOI: 10.1016/j.jand.2016.06.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fleming C, O'Keeffe S, Armstrong J, McClean B. EP-1712: Increased tumour control probability (TCP) with inhomogeneous dose escalated distributions in NSCLC. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32963-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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