6,984 results on '"E Jackson"'
Search Results
2. COVIDTrach: a prospective cohort study of mechanically ventilated patients with COVID-19 undergoing tracheostomy in the UK
- Author
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A Thompson, S Wilkinson, N Kumar, G Wong, J Smith, F Franco, P Smith, A Wilson, S Ghosh, S Shepherd, A Kumar, R Brown, D Williams, M Griffiths, J Sen, M Roberts, A McGrath, D Kumar, A Walker, A Gupta, N Sharma, P Shah, M Kumar, H Jones, P Paul, I Gonzalez, A Shah, V Srinivasan, M Kelly, P Surda, K Valchanov, S Saha, R Bentley, C Hall, J Ng, C Pearce, R Harris, H Wilson, N Amin, J Phillips, D Park, C Jennings, L Wren, B McGrath, D Walker, J Ahmed, S Menon, N Jain, R Mistry, E Jackson, W Rutherford, E France, S Mahalingam, C Hogan, A Burns, T Exall, J Rodrigues, C Xie, M Rouhani, E Paramasivam, A WILLIAMSON, K STEELE, D Dawson, S Linton, M Cameron, S Biswas, S Hodges, J Collier, J Collins, S Bennett, T Ali, N Bhatti, S Suresh, J Williamson, G Ambler, C Cook, D Baker, J Bates, J Blair, P Mukherjee, A Howard, B Cosway, M Anwar, S Fang, S Meghji, H Griffiths, M Keil, F GREEN, K Hussain, A Schache, C Lockie, S Winter, J Westwood, A Hormis, P Ward, C Walker, G Sandhu, T Davies, A Lloyd, L Linhartova, C SPENCER, A Courtney, L Bates, T Martín, T Tatla, L Ritchie, P Gill, S Shannon, A Arora, R Pinto, H Turner, J Whittaker, E Warner, L Leach, A Menon, J Higginson, G Warner, A Balfour, F Cooper, A Li, S Berry, R Gohil, M Celinski, J McEwan, E Riley, S Webster, I Ahmad, M Idle, K Jolly, S Burrows, S Parmar, B Morris, A Arya, S Mustafa, E Tam, D Chakravarty, M De, A Daudia, B Tehan, R Temple, J Broad, P Andrews, D Pennell, C Smart, R D’Souza, P Praveen, DJ Lin, M Osborne, A Coombs, T Hunt, M Singer, C Smyth, R Saha, G Walton, P Bishop, U Sheikh, R O'Brien, R Bhandari, A Rovira, S Sanyal, E Yeung, A Tse, N Lawrence, P Stimpson, H Saeed, K Fan, M Ashcroft, T Jacob, J Hadley, K Goodwin, Z Abdi, D Nair, B Hill, D Whitmore, N Macartney, P Sykes, N Mercer, R Sykes, S Siddiq, Nick JI Hamilton, AGM Schilder, MM George, GM Jama, J Goulder, C Schilling, S Laha, MA Birchall, NS Tolley, P Nankivell, O Breik, P Pracy, J Osher, C Huppa, P Stenhouse, F Ryba, EK Bhargava, D Ranford, A Takhar, C Tornari, M Verkerk, C Al-Yaghchi, M Jaafar, N Cereceda-Monteoliva, A Holroyd, K Ghufoor, H O'Mahony, H Drewery, A Mulcahy, T Magos, I Balasundaram, M Heliotis, A Loizidou, D York, R Exley, KA Solanki, P Kirticumar, A Shirazian, Y Bhatt, R Natt, N Banga, K Dhadwal, I Ekpemi, R Roplekar-Bance, N Glibbery, K Karamali, T Munroe-Gray, P Sethukumar, R Vasanthan, H Lee-Six, B Misztal, S Millington, M Musalia, A Cardozo, M Dunbobbin, S Shahidi, M Chachlani, J Fussey, M Misurati, S Ashok, H Aboulgheit, S Khwaja, R Anmolsingh, B Al-Dulaimy, E Omakobia, T Browning, L Lignos, P Twose, J Heyman, D Kathwadia, T Hwara, O Judd, W Parker, TP Davis, T Stubington, H Koumoullis, E Willcocks, L Skelly, G Dempsey, K Liatsikos, B Borgatta, A Glossop, V Politidis, D Dhariwal, A Kara, G Tattersall, W Udall, P Kirkland, J Staufenberg, H Buglass, NW Wahid, A Amlani, P Deutsch, K Markham, O Barker, A Easthope, S Glaze, D Bondin, D Thorley, K Kapoor, S Sirajuddin, F van Damme, O Mattoo, E Kershaw, S Dewhurst, S Blakeley, C Chivers, L Lindsey, R Glore, H Cunniffe, D Moult, D Zolger, J Bakmanidis, S Kandiah, A Pericleous, R Sheikh, U Nagalotimath, E El-Tabal, S Ghaffar, M Dallison, E Leakey, O Sanders, A Gomati, L Moir, CB Groba, C Davies-Husband, N Seymour, R Lovett, J Lunn, A Armson, K Hilliard, S Ladan, P Tsirevelou, V Ratnam, A Muddaiah, J Coakes, R Borg, A Tsagkovits, O Mulla, N Stobbs, D Pratap, Z Ghani, J Rocke, S Snape, A Hassaan, S Beckett, R Siau, C Lamont, C Blore, D Zakai, R Moorthy, P Bothma, A Syndercombe, N Keates, M Junaid, T Antonio, A Vijendren, V Venkatachalam, M Lechner, D Chandrasekharan, J Whiteside, S Dennis, A Eldahshan, H Paw, M Colomo-Gonzalez, N Mani, B Ranganathan, N Amiruddin, A Sladkowski, AK Abou-Foul, S Kishwan, P Naredla, A Al-Ajami, S Okhovat, E Carey, N Vallabh, A. Alatsatianos, and R Townsley
- Subjects
Medical technology ,R855-855.5 ,Surgery ,RD1-811 - Abstract
Objectives COVIDTrach is a UK multicentre prospective cohort study project that aims to evaluate the outcomes of tracheostomy in patients with COVID-19 receiving mechanical ventilation and record the incidence of SARS-CoV-2 infection among healthcare workers involved in the procedure.Design Data on patient demographic, clinical history and outcomes were entered prospectively and updated over time via an online database (REDCap). Clinical variables were compared with outcomes, with logistic regression used to develop a model for mortality. Participants recorded whether any operators tested positive for SARS-CoV-2 within 2 weeks of the procedure.Setting UK National Health Service departments involved in treating patients with COVID-19 receiving mechanical ventilation.Participants The cohort comprised 1605 tracheostomy cases from 126 UK hospitals collected between 6 April and 26 August 2020.Main outcome measures Mortality following tracheostomy, successful wean from mechanical ventilation and length of time from tracheostomy to wean, discharge from hospital, complications from tracheostomy, reported SARS-CoV-2 infection among operators.Results The median time from intubation to tracheostomy was 15 days (IQR 11, 21). 285 (18%) patients died following the procedure. 1229 (93%) of the survivors had been successfully weaned from mechanical ventilation at censoring and 1049 (81%) had been discharged from hospital. Age, inspired oxygen concentration, positive end-expiratory pressure setting, fever, number of days of ventilation before tracheostomy, C reactive protein and the use of anticoagulation and inotropic support independently predicted mortality. Six reports were received of operators testing positive for SARS-CoV-2 within 2 weeks of the procedure.Conclusions Tracheostomy appears to be safe in mechanically ventilated patients with COVID-19 and to operators performing the procedure and we identified clinical parameters that are predictive of mortality.Trial registration number The study is registered with ClinicalTrials.Gov (NCT04572438).
- Published
- 2021
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3. The Association between Stuttering Burden and Psychosocial Aspects of Life in Adults
- Author
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Marscha M. Engelen, Marie-Christine J. P. Franken, Lottie W. Stipdonk, Sarah E. Horton, Victoria E. Jackson, Sheena Reilly, Angela T. Morgan, Simon E. Fisher, Sandra Van Dulmen, and Else Eising
- Abstract
Purpose: Stuttering is a speech condition that can have a major impact on a person's quality of life. This descriptive study aimed to identify subgroups of people who stutter (PWS) based on stuttering burden and to investigate differences between these subgroups on psychosocial aspects of life. Method: The study included 618 adult participants who stutter. They completed a detailed survey examining stuttering symptomatology, impact of stuttering on anxiety, education and employment, experience of stuttering, and levels of depression, anxiety, and stress. A two-step cluster analytic procedure was performed to identify subgroups of PWS, based on self-report of stuttering frequency, severity, affect, and anxiety, four measures that together inform about stuttering burden. Results: We identified a high- (n = 230) and a low-burden subgroup (n = 372). The high-burden subgroup reported a significantly higher impact of stuttering on education and employment, and higher levels of general depression, anxiety, stress, and overall impact of stuttering. These participants also reported that they trialed more different stuttering therapies than those with lower burden. Conclusions: Our results emphasize the need to be attentive to the diverse experiences and needs of PWS, rather than treating them as a homogeneous group. Our findings also stress the importance of personalized therapeutic strategies for individuals with stuttering, considering all aspects that could influence their stuttering burden. People with high-burden stuttering might, for example, have a higher need for psychological therapy to reduce stuttering-related anxiety. People with less emotional reactions but severe speech distortions may also have a moderate to high burden, but they may have a higher need for speech techniques to communicate with more ease. Future research should give more insights into the therapeutic needs of people highly burdened by their stuttering.
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- 2024
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4. Make Your Number Talks More Ambitious
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Jillian M. Cavanna, Byungeun Pak, and Brent E. Jackson
- Abstract
Teachers can make number talks more ambitious and increase learning opportunities for students by debugging errors, promoting multi-student thinking, and orienting to make connections. This article describes the basic number talks routine and examines some common tendencies, such as "Serial Sharing." It concludes with a vignette to illustrate these moves, along with ideas for how and why teachers might use them.
- Published
- 2024
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5. Prevalence and uptake of vaping among people who have quit smoking: a population study in England, 2013-2024
- Author
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Sarah E. Jackson, Jamie Brown, Loren Kock, and Lion Shahab
- Subjects
Vaping ,E-cigarette ,Ex-smoker ,Former smoker ,Smoking cessation ,Quitting ,Medicine - Abstract
Abstract Background Vaping prevalence has increased rapidly in England since 2021. This study estimated trends between 2013 and 2024 in vaping among ex-smokers, overall and among those who did not use e-cigarettes to support their quit attempt. Methods Data were collected via nationally-representative, monthly cross-sectional surveys in England, October 2013 to May 2024. We analysed data from 54,251 adults (≥ 18y) who reported having tried to stop smoking in the past year or having stopped smoking more than a year ago. Logistic regression estimated associations between time and e-cigarette use. Results Across the period, there were increases in the use of e-cigarettes to support attempts to stop smoking (from 26.9% [24.0–30.0%] in October 2013 to 41.4% [37.7–45.2%] in May 2024), in current vaping among ≥ 1y ex-smokers (1.9% [1.5–2.5%] to 20.4% [18.7–22.2%]), and in late uptake of vaping after smoking cessation (i.e., current vaping among people who quit smoking before e-cigarettes started to become popular in 2011; 0.4% [0.2–0.8%] to 3.7% [2.8–4.9%]). These increases were non-linear, with much of the difference occurring since mid-2021, and were greatest at younger ages (e.g., current vaping among ≥ 1y ex-smokers reached 58.9% among 18-year-olds vs. 10.7% among 65-year-olds). Conclusions Vaping prevalence increased substantially among adult ex-smokers in England over the past decade, particularly at younger ages. While this is likely to have been largely driven by increased use of e-cigarettes in quit attempts and continued use thereafter, there was also evidence of increased uptake of vaping among those who had been abstinent from smoking for many years.
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- 2024
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6. Engaging with Engagement: Interrogating Preservice Teachers' Theories of Engagement in Their Literacy Planning and Reflection
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Lindsey W. Rowe, Jackie Ridley, Marie E. Borkowski, Sarah E. Jackson, and Michiko Hikida
- Abstract
The term "engagement" is widely used in teacher education and professional development. There is, however, a lack of consensus about the meaning of this term: it is defined in numerous ways with various theoretical underpinnings. This article employs a postqualitative approach to explore conceptualizations of engagement and their implications for teaching and learning. Specifically, we examine written teaching reflections from one cohort of preservice teachers, asking: (1) How did preservice teachers use the word "engage(ment)" in their planning for and analysis of one-on-one literacy instructional events? and (2) What conceptualizations of engagement did these usages reflect? Through the analytic approach of thinking with theory, we plug these data into four theoretical perspectives that are relevant to preservice teachers' talk about engagement: (1) First Generation Activity Theory, (2) Reader Response Theory, (3) Self-Determination Theory, and (4) Inter-Comprehension Theory. We explore how each perspective illuminated our data, as well as questions that emerged. We conclude by (re)imagining engagement through a languaging relations perspective, arguing that this lens shifts toward a more humanizing conceptualization of engagement by centering the ongoing (re)making of relationships as people teach and learn.
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- 2024
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7. Dataset Enlargement with Generative Adversarial Neural Networks.
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Gavin E. Jackson and Damian Valles
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- 2024
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8. Estimating indices of health system readiness: an example from rural northern Ghana
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C Boyer, BS, E Jackson, PhD, A Bawah, PhD, M Schmitt, MPH, J Awoonor-Williams, MD, and J Phillips, PhD
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Public aspects of medicine ,RA1-1270 - Abstract
Background: There is growing recognition that stronger health systems are necessary to accelerate progress towards the Millennium Development Goals (MDGs). However, a departure from disease-specific programmes and interventions requires the development of a new empirical framework for programme evaluation that focuses on indicators of health system strengthening. Service provision assessment (SPA) surveys provide a wealth of data about health system resources, but they often include too many indicators to provide useful insight into general systems strength or service readiness. To improve the usefulness of such data, we have applied multidimensional statistical data reduction techniques to SPA data with the aim of developing robust measures of health system capabilities. Methods: Data for the construction of indices were derived from the 2010 Ghana Emergency Obstetric and Newborn Care (EmONC) survey published by the Ghanaian Ministry of Health. This survey included a saturated sample of 147 health facilities in the Upper East Region. The instrument assessed facility readiness and performance using 3872 service and outcome indicators of: infrastructure; human resources; availability of drugs, equipment, and supplies; and knowledge of essential procedures. Of those indicators, 872 were identified as corresponding to one of the six WHO health system building blocks. Dimensionality reduction was done using principal component analysis. Where appropriate, we reorganised binary indicators into ordinal categorical variables, as is commonly done in the socioeconomic status literature. We also assessed the external validity of the new index. Findings: Results from the principal component analysis of the 872 health systems indicators suggest that a single component (PC1) explains more than 30% of the common variance among the health facilities surveyed. An index composed of the factor loadings from PC1 showed marked variation between facilities (SD 13·077) with easily identifiable clusters of facility type (hospital, health centre, clinic, community compound). The distribution of PC1 also suggested concentration of resources among a few high-level facilities (Gini 0·508). Compared with EmONC signal functions, the index scores were better predictors of the number of deliveries (R2 0·61 vs R2 0·31) and the number of low birthweight babies (0·68 vs 0·26) as well as maternal deaths (0·81 vs 0·34) and neonatal deaths (0·79 vs 0·36). Interpretation: Our findings suggest that an index of health system readiness that captures a large portion of facility variance can be constructed from SPA data using principal component analysis. In practice, such an index could be used to monitor progress towards stronger health systems. However, further research is needed to determine how an increase in index score which is input-focused, affects population health. Particular attention must also be paid to the performance determinants that maximise the efficient use of health system inputs. Funding: Support for this study was provided by the African Health Initiative with funding from the Doris Duke Charitable Foundation.
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- 2015
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9. UKB.COVID19: an R package for UK Biobank COVID-19 data processing and analysis [version 3; peer review: 1 approved, 2 not approved]
- Author
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Longfei Wang, Victoria E Jackson, Liam G Fearnley, and Melanie Bahlo
- Subjects
Software Tool Article ,Articles ,R package ,UK Biobank ,COVID-19 ,GWAS ,risk factors - Abstract
COVID-19 caused by SARS-CoV-2 has resulted in a global pandemic with a rapidly developing global health and economic crisis. Variations in the disease have been observed and have been associated with the genomic sequence of either the human host or the pathogen. Worldwide scientists scrambled initially to recruit patient cohorts to try and identify risk factors. A resource that presented itself early on was the UK Biobank (UKBB), which is investigating the respective contributions of genetic predisposition and environmental exposure to the development of disease. To enable COVID-19 studies, UKBB is now receiving COVID-19 test data for their participants every two weeks. In addition, UKBB is delivering more frequent updates of death and hospital inpatient data (including critical care admissions) on the UKBB Data Portal. This frequently changing dataset requires a tool that can rapidly process and analyse up-to-date data. We developed an R package specifically for the UKBB COVID-19 data, which summarises COVID-19 test results, performs association tests between COVID-19 susceptibility/severity and potential risk factors such as age, sex, blood type, comorbidities and generates input files for genome-wide association studies (GWAS). By applying the R package to data released in April 2021, we found that age, body mass index, socioeconomic status and smoking are positively associated with COVID-19 susceptibility, severity, and mortality. Males are at a higher risk of COVID-19 infection than females. People staying in aged care homes have a higher chance of being exposed to SARS-CoV-2. By performing GWAS, we replicated the 3p21.31 genetic finding for COVID-19 susceptibility and severity. The ability to iteratively perform such analyses is highly relevant since the UKBB data is updated frequently. As a caveat, users must arrange their own access to the UKBB data to use the R package.
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- 2024
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10. Implementing Entrepreneurial Processes for Good
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Diego Matricano, Laura Castaldi, William E. Jackson III, Lou Marino
- Published
- 2024
11. Novel fatty acyl substrates for myristoyl-CoA:protein N-myristoyl-transferase.
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RO Heuckeroth, E Jackson-Machelski, SP Adams, NS Kishore, M Huhn, A Katoh, T Lu, GW Gokel, and JI Gordon
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Biochemistry ,QD415-436 - Abstract
Myristoyl-CoA:protein N-myristoyltransferase (NMT) catalyzes the covalent attachment of myristic acid to the NH2-terminal Gly residues of a number of viral and cellular proteins. The remarkable specificity of this enzyme for myristoyl CoA observed in vivo appears to arise in large part from a cooperativity between NMT's acylCoA and peptide binding sites: the length of the acylCoA bound to NMT influences the interactions of peptide substrates with NMT. We have previously synthesized analogs of myristic acid with single oxygen or sulfur for methylene substitutions. These heteroatom substitutions produce significant reductions in acyl chain hydrophobicity without accompanying alterations in chain length or stereochemical restrictions. In vitro studies have shown that the CoA thioesters of these analogs are substrates for S. cerevisiae NMT and that the efficiency of their transfer to octapeptide substrates is peptide sequence-dependent. In vivo studies with cultured mammalian cells have confirmed that these fatty acid analogs are selectively incorporated into a subset of cellular N-myristoylproteins, that only a subset of analog-substituted proteins undergo redistribution from membrane to cytosolic fractions, and that these analogs can inhibit the replication of human immunodeficiency virus I and Moloney murine leukemia viruses–two retroviruses that depend upon N-myristoylation of their gag polyprotein precursors for assembly. We have now extended our analysis of NMT-acylCoA interactions by synthesizing additional analogs of myristic acid and testing them in a coupled in vitro assay system. Myristic acid analogs with two oxygen or two sulfur substitutions have hydrophobicities comparable to that of hexanoic acid and decanoic acid, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
- Published
- 1990
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12. Rhesus monkey model of familial hypercholesterolemia: relation between plasma Lp[a] levels, apo[a] isoforms, and LDL-receptor function.
- Author
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L Neven, A Khalil, D Pfaffinger, GM Fless, E Jackson, and AM Scanu
- Subjects
Biochemistry ,QD415-436 - Abstract
We previously described a family of rhesus monkeys in which three out of six members had a spontaneous hypercholesterolemia related to a decrease in number of low density lipoprotein receptors (LDL-R) (Scanu et al. 1988. J. Lipid Res. 29: 1671-1681). During the current work an additional female normocholesterolemic offspring was generated from the mating of the original dam and sire. Moreover, from the breeding of one of the affected male offspring with six unrelated normocholesterolemic female monkeys, eight offspring were generated of which three were hypercholesterolemic on a cholesterol-free diet and exhibited the same degree of LDL-R deficiency as shown by studies in skin fibroblast cultures. All of the animals studied had levels of plasma lipoprotein[a] protein ranging between 1.0 mg/dl and 57.5 mg/dl that were only weakly correlated with total plasma cholesterol, LDL cholesterol, and apoB. LDL-R deficiency correlated with plasma LDL but not Lp[a]. A 7 week fat challenge (16.5% lard, 0.64% cholesterol) that raised the plasma LDL levels markedly had no effect on plasma Lp[a]. Animals with the single band apo[a] phenotype moving on SDS-PAGE faster than apoB-100 exhibited a tendency for high plasma Lp[a] levels which, however, varied widely. Wide variations in Lp[a] levels were also noted with the other apo[a] phenotypes. Taken together our results demonstrate a successful transmission to second generation animals of the LDL-R deficiency phenotype and provide evidence that this phenotype correlates well with plasma LDL levels but not Lp[a]. Our data also suggest that the apo[a] gene is only partially involved in the regulation of the plasma Lp[a] levels.
- Published
- 1990
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13. Data Collection and Real-Time Facial Emotion Recognition in iOS Apps with CNN-Based Models.
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Damian Valles, Lois Adrianne R. Umali, Thomas Paveglio, Josiah N. Brinson, Mohammed Hyder, Gavin E. Jackson, Dylan Hall, John W. Farrell, Yumeng Li, Semih Aslan, Maria D. Resendiz, and Ting Liu
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- 2023
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14. The Use of Kinematic Features in Evaluating Upper Limb Motor Function Learning Progress Based on Machine Learning.
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Shuhao Dong, Justin F. Gallagher, Andrew E. Jackson, and Martin Levesley
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- 2023
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15. Entrepreneurial Processes in the Era of Digital Transformation
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Diego Matricano, Laura Castaldi, William E. Jackson III, Lou Marino, Diego Matricano, Laura Castaldi, William E. Jackson III, Lou Marino
- Published
- 2023
16. Persistent medical management of chylopericardium following orthotopic heart transplant
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E Jackson, A Khan, and N Yonan
- Subjects
chylopericardium ,heart ,transplant ,cardiothoracic ,Surgery ,RD1-811 - Abstract
We describe a case of chylopericardium post orthotopic heart transplant, having had previous cardiac surgeries. This was managed conservatively for a prolonged period after which the patient recovered. We emphasise the fact that medical management works although the recovery time may be prolonged.
- Published
- 2010
17. Modelling and Design of Asymmetric Vibrations to Induce Bidirectional Force Sensation for Portable Rehabilitation Devices*.
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Shuhao Dong, Justin F. Gallagher, Andrew E. Jackson, and Martin Levesley
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- 2022
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18. Non-assembly Walking Mechanism for Robotic In-Pipe Inspection.
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George H. Jackson-Mills, Basil A. Shead, James R. Collett, Masego Mphake, Nicholas Fry, Andrew R. Barber, Jordan H. Boyle, Robert C. Richardson, Andrew E. Jackson, and Shaun Whitehead
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- 2021
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19. ALTRO-C: A Fast Solver for Conic Model-Predictive Control.
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Brian E. Jackson, Tarun Punnoose, Daniel Neamati, Kevin Tracy, Rianna M. Jitosho, and Zachary Manchester
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- 2021
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20. Mechanistic insights into the rational design of masked antibodies
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Carolina T. Orozco, Manuela Bersellini, Lorraine M. Irving, Wesley W. Howard, David Hargreaves, Paul W. A. Devine, Elise Siouve, Gareth J. Browne, Nicholas J. Bond, Jonathan J. Phillips, Peter Ravn, and Sophie E. Jackson
- Subjects
Masked antibodies ,off-tumor cytotoxicity ,protein design ,pro-antibody ,pro-drug ,protein-protein interaction ,Therapeutics. Pharmacology ,RM1-950 ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Although monoclonal antibodies have greatly improved cancer therapy, they can trigger side effects due to on-target, off-tumor toxicity. Over the past decade, strategies have emerged to successfully mask the antigen-binding site of antibodies, such that they are only activated at the relevant site, for example, after proteolytic cleavage. However, the methods for designing an ideal affinity-based mask and what parameters are important are not yet well understood. Here, we undertook mechanistic studies using three masks with different properties and identified four critical factors: binding site and affinity, as well as association and dissociation rate constants, which also played an important role. HDX-MS was used to identify the location of binding sites on the antibody, which were subsequently validated by obtaining a high-resolution crystal structure for one of the mask-antibody complexes. These findings will inform future designs of optimal affinity-based masks for antibodies and other therapeutic proteins.
- Published
- 2022
- Full Text
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21. Genetically determined hypercholesterolemia in a rhesus monkey family due to a deficiency of the LDL receptor.
- Author
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A M Scanu, A Khalil, L Neven, M Tidore, G Dawson, D Pfaffinger, E Jackson, K D Carey, H C McGill, and G M Fless
- Subjects
Biochemistry ,QD415-436 - Abstract
A family of rhesus monkeys comprising a sire, a dam, and four male offspring were fed a cholesterol-free Purina Chow diet for several months. The sire, 431-J, and two of the offspring, B-8204 and B-8806, had persistent plasma cholesterol levels in the range of 100-130 mg/dl, whereas the dam, 766-I, and the two other offspring, B-1000 and B-7643, exhibited a marked hypercholesterolemia in the 250-300 mg/dl range associated with an elevation of plasma LDL and apoB. When fed for 12 weeks a diet containing 12.5% lard and 0.25% cholesterol, sire, dam, B-1000 and B-7643 exhibited a marked hypercholesterolemia (500-800 mg/dl range), whereas B-8204 and B-8806 developed only a modest hypercholesterolemia (200-250 mg/dl). All animals were Lp[a]+. Skin fibroblasts from each animal and from control cells were grown in 10% fetal calf serum, transferred to 10% lipoprotein-deficient serum for 48 hr, and then incubated at 4 degrees C or 37 degrees C with 125I-labeled Lp[a]-free LDL. The fibroblasts from dam and offspring B-1000 and B-7643 bound and internalized 125I-labeled LDL less efficiently than control cells. Mathematical analyses of the 4 degrees C binding data indicated that there were no significant differences in LDL binding affinity between test and control cells suggesting that cells from the animals with a spontaneous hypercholesterolemia had a decreased number of LDL receptors. This conclusion was supported by the results of ligand and immunoblot analyses carried out on cell lysates separated by gradient gel electrophoresis. We conclude that a genetically determined LDL receptor deficiency was responsible, in part, for the spontaneous hypercholesterolemia observed in three out of the six family members and that this deficiency accounted for the hyperresponsiveness to a dietary fat and cholesterol challenge by the dam and the two offspring, B-1000 and B-7643. The hyperresponsiveness noted in the sire that had no evidence for LDL-receptor deficiency illustrates that factors other than the LDL receptor were responsible for the hypercholesterolemia attending the fat challenge.
- Published
- 1988
- Full Text
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22. UKB.COVID19: an R package for UK Biobank COVID-19 data processing and analysis [version 2; peer review: 1 approved, 1 not approved]
- Author
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Longfei Wang, Victoria E Jackson, Liam G Fearnley, and Melanie Bahlo
- Subjects
Software Tool Article ,Articles ,R package ,UK Biobank ,COVID-19 ,GWAS ,risk factors - Abstract
COVID-19 caused by SARS-CoV-2 has resulted in a global pandemic with a rapidly developing global health and economic crisis. Variations in the disease have been observed and have been associated with the genomic sequence of either the human host or the pathogen. Worldwide scientists scrambled initially to recruit patient cohorts to try and identify risk factors. A resource that presented itself early on was the UK Biobank (UKBB), which is investigating the respective contributions of genetic predisposition and environmental exposure to the development of disease. To enable COVID-19 studies, UKBB is now receiving COVID-19 test data for their participants every two weeks. In addition, UKBB is delivering more frequent updates of death and hospital inpatient data (including critical care admissions) on the UKBB Data Portal. This frequently changing dataset requires a tool that can rapidly process and analyse up-to-date data. We developed an R package specifically for the UKBB COVID-19 data, which summarises COVID-19 test results, performs association tests between COVID-19 susceptibility/severity and potential risk factors such as age, sex, blood type, comorbidities and generates input files for genome-wide association studies (GWAS). By applying the R package to data released in April 2021, we found that age, body mass index, socioeconomic status and smoking are positively associated with COVID-19 susceptibility, severity, and mortality. Males are at a higher risk of COVID-19 infection than females. People staying in aged care homes have a higher chance of being exposed to SARS-CoV-2. By performing GWAS, we replicated the 3p21.31 genetic finding for COVID-19 susceptibility and severity. The ability to iteratively perform such analyses is highly relevant since the UKBB data is updated frequently. As a caveat, users must arrange their own access to the UKBB data to use the R package.
- Published
- 2022
- Full Text
- View/download PDF
23. ALTRO: A Fast Solver for Constrained Trajectory Optimization.
- Author
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Taylor A. Howell, Brian E. Jackson, and Zachary Manchester
- Published
- 2019
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24. Dynamic Partisanship: How and Why Voter Loyalties Change
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Ken Kollman, John E. Jackson
- Published
- 2021
25. Increasing the level of cytoskeletal protein Flightless I reduces adhesion formation in a murine digital flexor tendon model
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Jessica E. Jackson, Zlatko Kopecki, Peter J. Anderson, and Allison J. Cowin
- Subjects
Flii ,Flightless I ,Tenocyte ,Tendon ,Adhesions ,Orthopedic surgery ,RD701-811 ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background Surgical repair of tendons is common, but function is often limited due to the formation of flexor tendon adhesions which reduce the mobility and use of the affected digit and hand. The severity of adhesion formation is dependent on numerous cellular processes many of which involve the actin cytoskeleton. Flightless I (Flii) is a highly conserved cytoskeletal protein, which has previously been identified as a potential target for improved healing of tendon injuries. Using human in vitro cell studies in conjunction with a murine model of partial laceration of the digital flexor tendon, we investigated the effect of modulating Flii levels on tenocyte function and formation of adhesions. Methods Human tenocyte proliferation and migration was determined using WST-1 and scratch wound assays following Flii knockdown by siRNA in vitro. Additionally, mice with normal and increased levels of Flii were subjected to a partial laceration of the digital flexor tendon in conjunction with a full tenotomy to immobilise the paw. Resulting adhesions were assessed using histology and immunohistochemistry for collagen I, III, TGF-β1and -β3 Results Flii knockdown significantly reduced human tenocyte proliferation and migration in vitro. Increasing the expression of Flii significantly reduced digital tendon adhesion formation in vivo which was confirmed through significantly smaller adhesion scores based on collagen fibre orientation, thickness, proximity to other fibres and crimping. Reduced adhesion formation was accompanied with significantly decreased deposition of type I collagen and increased expression of TGF-β1 in vivo. Conclusions These findings suggest that increasing the level of Flii in an injured tendon may be beneficial for decreasing tendon adhesion formation.
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- 2020
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26. In vitro analysis of the effect of Flightless I on murine tenocyte cellular functions
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Jessica E. Jackson, Zlatko Kopecki, Peter J. Anderson, and Allison J. Cowin
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Flii ,Flightless I ,Tendon ,Healing ,Orthopedic surgery ,RD701-811 ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background Healing of tendons after injury involves the proliferation of tenocytes and the production of extracellular matrix; however, their capacity to heal is limited by poor cell density and limited growth factor activity. Flightless I (Flii) has previously been identified as an important regulator of cellular proliferation and migration, and the purpose of this study was to evaluate the effect of differential Flii gene expression on tenocyte function in vitro. Methods The role of Flii on tenocyte proliferation, migration, and contraction was assessed using established assays. Tenocytes from Flii +/− , wild-type, and Flii overexpressing mice were obtained and the effect of differential Flii expression on migration, proliferation, contraction, and collagen synthesis determined in vitro. Statistical differences were determined using unpaired Student’s t test and statistical outliers were identified using the Grubbs’ test. Results Flii overexpressing tenocytes showed significantly improved migration and proliferation as well as increased collagen I secretion. Explanted tendons from Flii overexpressing mice also showed significantly elevated tenocyte outgrowth compared to Flii +/− mice. In contrast to its role in dermal wound repair, Flii positively affects cellular processes in tendons. Conclusions These findings suggest that Flii could be a novel target for modulating tenocyte activity and improving tendon repair. This could have significant clinical implications as novel therapeutic targets for improved healing of tendon injuries are urgently needed.
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- 2020
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27. Bullous Scabies in an Immunocompromised Host
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James R. Wester, Lesley E Jackson, Kathryn Mokgosi, Tomer Barak, and Mahmoud Abu Hazeem
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Infectious and parasitic diseases ,RC109-216 - Abstract
A 40-year-old woman with a history of poorly controlled HIV presented to a district referral hospital in rural Botswana for a generalized skin rash of several months duration. The highly pruritic rash predominantly involved her hands and feet and was associated with bullae that were present for days at a time before rupturing without drainage or discharge. The patient endorsed night sweats, periodic fevers, occasional cough productive of blood-tinged sputum, fatigue, and weight loss. On admission, CD4 count was 46 cells/mm3 and viral load was >750000 copies/mL. Pulmonary tuberculosis testing via sputum was negative twice. A blood count demonstrated eosinophilia. Oral acyclovir was started empirically for disseminated herpes virus infection, with topical beclomethasone and intravenous antibiotics for possible superinfected bullous dermatosis. With inadequate response to treatment, a skin biopsy was obtained and microscopic examination demonstrated scabies mites. The absence of skin burrows, the presence of bullae, and working in a low-resource setting without direct access to microscopic examination delayed diagnosis. The patient was initiated on topical permethrin. Oral ivermectin was not available in country and was obtained from overseas shipment, delaying treatment initiation. Drastic improvement was seen after the patient initiated ivermectin. A local nurse in the patient’s village visited her community and found multiple individuals with active scabies infection. The patient’s discharge was delayed until these community members were treated successfully with topical permethrin. This case describes an atypical presentation of scabies in an under-resourced setting, demonstrating unique diagnostic, therapeutic, and public health challenges.
- Published
- 2022
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28. Gestionando el multiculturalismo: Indigenidad y lucha por los derechos en Colombia
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Jean E Jackson
- Published
- 2020
29. UKB.COVID19: an R package for UK Biobank COVID-19 data processing and analysis [version 1; peer review: 1 approved, 1 not approved]
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Longfei Wang, Victoria E Jackson, Liam G Fearnley, and Melanie Bahlo
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Software Tool Article ,Articles ,R package ,UK Biobank ,COVID-19 ,GWAS ,risk factors - Abstract
COVID-19 caused by SARS-CoV-2 has resulted in a global pandemic with a rapidly developing global health and economic crisis. Variations in the disease have been observed and have been associated with the genomic sequence of either the human host or the pathogen. Worldwide scientists scrambled initially to recruit patient cohorts to try and identify risk factors. A resource that presented itself early on was the UK Biobank (UKBB), which is investigating the respective contributions of genetic predisposition and environmental exposure to the development of disease. To enable COVID-19 studies, UKBB is now receiving COVID-19 test data for their participants every two weeks. In addition, UKBB is delivering more frequent updates of death and hospital inpatient data (including critical care admissions) on the UKBB Data Portal. This frequently changing dataset requires a tool that can rapidly process and analyse up-to-date data. We developed an R package specifically for the UKBB COVID-19 data, which summarises COVID-19 test results, performs association tests between COVID-19 susceptibility/severity and potential risk factors such as age, sex, blood type, comorbidities and generates input files for genome-wide association studies (GWAS). By applying the R package to data released in April 2021, we found that age, body mass index, socioeconomic status and smoking are positively associated with COVID-19 susceptibility, severity, and mortality. Males are at a higher risk of COVID-19 infection than females. People staying in aged care homes have a higher chance of being exposed to SARS-CoV-2. By performing GWAS, we replicated the 3p21.31 genetic finding for COVID-19 susceptibility and severity. The ability to iteratively perform such analyses is highly relevant since the UKBB data is updated frequently. As a caveat, users must arrange their own access to the UKBB data to use the R package.
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- 2021
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30. Anatomic Disorders of the Chest and Airways
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SU YEON LEE, JORDAN E. JACKSON, SATYAN LAKSHIMINRUSIMHA, ERIN G. BROWN, and DIANA L. FARMER
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- 2024
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31. Contributors
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Steven H. Abman, Noorjahan Ali, Karel Allegaert, Jamie E. Anderson, Deidra A. Ansah, Bhawna Arya, David Askenazi, Susan W. Aucott, Stephen A. Back, Gerri R. Baer, H. Scott Baldwin, Jerasimos Ballas, Maneesh Batra, Cheryl Bayart, Gary A. Bellus, John T. Benjamin, Gerard T. Berry, Zeenia C. Billimoria, Gil Binenbaum, Matthew S. Blessing, Markus D. Boos, Brad Bosse, Maryse L. Bouchard, Heather A. Brandling-Bennett, Colleen Brown, Erin G. Brown, Katherine H. Campbell, Katie Carlberg, Brian S. Carter, Shilpi Chabra, Irene J. Chang, Edith Y. Cheng, Kai-wen Chiang, Robert D. Christensen, Terrence Chun, Ronald I. Clyman, Donna, Maria E. Cortezzo, C.M. Cotten, Sherry E. Courtney, Jonathan M. Davis, Alejandra G. de Alba Campomanes, Benjamin Dean, Ellen Dees, Sara B. De, Mauro, Scott C. Denne, Emöke Deschmann, Carolina Cecilia Di Blasi, Sara A. Di, Vall, Dan Doherty, David J. Durand, Nicolle Fernández Dyess, Eric C. Eichenwald, Kelsey B. Eitel, Rachel M. Engen, Kelly N. Evans, Diana L. Farmer, Emily Fay, Patricia Y. Fechner, Rachel Fleishman, Bobbi Fleiss, Joseph Flynn, Katherine T. Flynn-O’Brien, G. Kyle Fulton, Renata C. Gallagher, Estelle B. Gauda, W. Christopher Golden, Michelle M. Gontasz, Natasha González Estévez, Sidney M. Gospe, Pierre Gressens, Deepti Gupta, Sangeeta Hingorani, Ashley P. Hinson, Susan R. Hintz, W. Alan Hodson, Kara K. Hoppe, Alyssa Huang, Benjamin Huang, Kathy Huen, Katie A. Huff, Cristian Ionita, J. Craig Jackson, Jordan E. Jackson, Tom Jaksic, Patrick J. Javid, Julia Johnson, Cassandra D. Josephson, Emily S. Jungheim, Sandra E. Juul, Mohammad Nasser Kabbany, Heidi Karpen, Gregory Keefe, Jennifer C. Keene, Amaris M. Keiser, Roberta L. Keller, Thomas F. Kelly, Kate Khorsand, Grace Kim, John P. Kinsella, Allison S. Komorowski, Ildiko H. Koves, Joanne M. Lagatta, Satyan Lakshminrusimha, Christina Lam, John D. Lantos, Janessa B. Law, Su Yeon Lee, Ofer Levy, David B. Lewis, Philana Ling Lin, Scott A. Lorch, Tiffany L. Lucas, Akhil Maheshwari, Emin Maltepe, Erica Mandell, Winston M. Manimtim, Richard J. Martin, Dennis E. Mayock, Irene Mc, Aleer, Patrick McQuillen, Ann J. Melvin, Paul A. Merguerian, Lina Merjaneh, J. Lawrence Merritt, Valerie Mezger, Marian G. Michaels, Ulrike Mietzsch, Steven P. Miller, Thomas R. Moore, Karen F. Murray, Debika Nandi-Munshi, Niranjana Natarajan, Kathryn D. Ness, Josef Neu, Shahab Noori, Thomas Michael O’Shea, Julius T. Oatts, Nigel Paneth, Thomas A. Parker, Ravi Mangal Patel, Simran Patel, Anna A. Penn, Christian M. Pettker, Shabnam Peyvandi, Catherine Pihoker, Erin Plosa, Brenda Poindexter, Michael A. Posencheg, Mihai Puia-Dumitrescu, Vilmaris Quiñones Cardona, Samuel E. Rice-Townsend, Art Riddle, Elizabeth Robbins, Mark D. Rollins, Mark A. Rosen, Courtney K. Rowe, Inderneel Sahai, Sulagna C. Saitta, Parisa Salehi, Pablo J. Sanchez, Taylor Sawyer, Matthew A. Saxonhouse, Katherine M. Schroeder, David T. Selewski, T. Niroshi Senaratne, Istvan Seri, Emily E. Sharpe, Sarah E. Sheppard, Margarett Shnorhavorian, Robert Sidbury, La, Vone Simmons, Rebecca A. Simmons, Rachana Singh, Martha C. Sola-Visner, Lakshmi Srinivasan, Heidi J. Steflik, Robin H. Steinhorn, Caleb Stokes, Helen Stolp, Jennifer Sucre, Angela Sun, Dalal K. Taha, Jessica Tenney, Janet A. Thomas, George E. Tiller, Benjamin A. Torres, William E. Truog, Kirtikumar Upadhyay, Gregory C. Valentine, John N. van den Anker, Betty Vohr, Linda D. Wallen, Peter (Zhan Tao) Wang, Bradley A. Warady, Robert M. Ward, Jon F. Watchko, Elias Wehbi, Joern-Hendrik Weitkamp, David Werny, Klane K. White, K. Taylor Wild, Susan Wiley, Laurel Willig, George A. Woodward, Clyde J. Wright, Karyn Yonekawa, Elizabeth Yu, and Elaine H. Zackai
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- 2024
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32. CHAPTER 26 GLASS FINDS
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Ruth E. Jackson-Tal and Etan Ayalon
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- 2023
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33. Application of a Developmental Composite Material Model to Predict the Crush Response of Two Energy Absorbers
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Karen E Jackson, Robert K Goldberg, Trenton M Ricks, Rudy T Haluza, and Javier Buenrostro
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Structural Mechanics - Abstract
In 2012, a consortium was formed with the goal of creating a new composite material model capable of predicting the wide range of properties, accumulated damage behavior, and the many different types of failure in composites under impact loading. The material model was developed for execution in the commercially available nonlinear, explicit transient dynamic finite element code, LS-DYNA®. This material model incorporates three sub-models: deformation, damage, and failure. In addition, the model accounts for strain rate and temperature effects and relies heavily on the input of tabulated material response data. The model is designated *MAT_COMPOSITE_TABULATED_PLASTICITY_DAMAGE, or *MAT_213. Initially, *MAT_213 was developed for use with solid elements only; however, a thin shell element formulation for *MAT_213 has been adapted recently. The objective of this project was to find a suitable modeling example to investigate the capabilities and performance of *MAT_213. In 2012, two composite energy absorbers were designed and evaluated at NASA Langley Research Center through multi-level testing and simulation. The first was a conical-shaped energy absorber, designated the conusoid, which consisted of four layers of hybrid carbon-Kevlar® plain-weave fabric oriented at [+45°/-45°/-45°/+45°] with respect to the vertical direction. The second was a sinusoidal-shaped energy absorber, designated the sinusoid, which consisted of hybrid carbon-Kevlar® plain-weave fabric face sheets, two layers for each face sheet oriented at ±45° with respect to the vertical direction, and a closed-cell ELFOAM® P200 polyisocyanurate foam core. Finite element models were developed of the energy absorbers and simulations were performed using LS-DYNA®. In this paper, the development of a *MAT_213 model of a hybrid carbon-Kevlar® plain-weave fabric is presented. Next, comparisons with material characterization tests are presented. Then, test-analysis results are documented for each energy absorber as comparisons of time-history responses, as well as predicted and experimental structural deformations and progressive damage under impact loading using the *MAT_213 material model. Since a prior *MAT_58, or *MAT_LAMINATED_COMPOSITE_FABRIC material model was used in previous simulations of the energy absorbers, comparisons are made between *MAT_58 and *MAT_213 model predictions with test data. Finally, the paper includes a comprehensive list of “lessons learned,” in which a series of parametric studies are documented that were performed to investigate specific issues related to the material model. These “lessons learned” are included in hopes that they may help future *MAT_213 users.
- Published
- 2021
34. COURAGE-ALS: a randomized, double-blind phase 3 study designed to improve participant experience and increase the probability of success
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Jeremy M. Shefner, Ammar Al-Chalabi, Jinsy A. Andrews, Adriano Chio, Mamede De Carvalho, Bettina M. Cockroft, Philippe Corcia, Philippe Couratier, Merit E. Cudkowicz, Angela Genge, Orla Hardiman, Terry Heiman-Patterson, Robert D. Henderson, Caroline Ingre, Carlayne E. Jackson, Wendy Johnston, Noah Lechtzin, Albert Ludolph, Nicholas J. Maragakis, Timothy M. Miller, Jesus S. Mora Pardina, Susanne Petri, Zachary Simmons, Leonard H. Van Den Berg, Lorne Zinman, Stuart Kupfer, Fady I. Malik, Lisa Meng, Tyrell J. Simkins, Jenny Wei, Andrew A. Wolff, and Stacy A. Rudnicki
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Neurology ,Neurology (clinical) - Published
- 2023
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35. Hepatocellular Carcinoma Surveillance among Individuals with Cirrhosis: Trends by Payer, Etiology, and Calendar Year, from a Statewide, Multi-Payer Dataset, 2010–2018
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Christine D. Hsu, Louise M. Henderson, Bradford E. Jackson, Christopher D. Baggett, Michele Jonsson Funk, Andrew F. Olshan, Parul Gupta, A. Sidney Barritt, Hanna K. Sanoff, Stephanie B. Wheeler, Andrew M. Moon, and Jennifer L. Lund
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Oncology ,Epidemiology - Abstract
Background: Hepatocellular carcinoma (HCC) surveillance is underutilized, with Methods: We conducted a retrospective cohort study of individuals with cirrhosis using claims data from Medicare, Medicaid, and private insurance plans in North Carolina. We included individuals ≥ 18 years with a first occurrence of an ICD-9/10 code for cirrhosis between January 1, 2010, and June 30, 2018. The outcome was HCC surveillance by abdominal ultrasound, CT, or MRI. We estimated 1- and 2-year cumulative incidences for HCC surveillance and assessed longitudinal adherence to surveillance by computing the proportion of time covered (PTC). Results: Among 46,052 individuals, 71% were enrolled through Medicare, 15% through Medicaid, and 14% through private insurance. The overall 1-year cumulative incidence of HCC surveillance was 49% and the 2-year cumulative incidence was 55%. For those with an initial screen in the first 6 months of their cirrhosis diagnosis, the median 2-year PTC was 67% (Q1, 38%; Q3, 100%). Conclusions: HCC surveillance initiation after cirrhosis diagnosis remains low, though it has improved slightly over time, particularly among individuals with Medicaid. Impact: This study provides insight into recent trends in HCC surveillance and highlights areas to target for future interventions, particularly among patients with nonviral etiologies.
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- 2023
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36. Survey of experiences and barriers to dental care post–head and neck cancer in OraRad study participants
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E. Jackson Threet, Joel J. Napeñas, Cathleen Petersen, Rebecca Mitchell, Leslie Long-Simpson, Ryann Shadick, Kimberly C. Valentino, Cynthia A. Rybczyk, Jo-Ann A. Blake, Makeda C. Brown, Robert Aidoo, Erika S. Helgeson, Rajesh V. Lalla, and Michael T. Brennan
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Radiology, Nuclear Medicine and imaging ,Dentistry (miscellaneous) ,Surgery ,Oral Surgery ,Pathology and Forensic Medicine - Published
- 2023
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37. Health utilities and quality-adjusted life years for patients with amyotrophic lateral sclerosis receiving reldesemtiv or placebo in FORTITUDE-ALS
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Paulos Gebrehiwet, Lisa Meng, Stacy A. Rudnicki, Phil Sarocco, Jenny Wei, Andrew A. Wolff, Michael Butzner, Adriano Chiò, Jinsy A. Andrews, Angela Genge, Dyfrig A. Hughes, Carlayne E. Jackson, Noah Lechtzin, Timothy M. Miller, and Jeremy M. Shefner
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Health Policy - Published
- 2023
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38. Solution Aggregate Structures of Donor Polymers Determine the Morphology and Processing Resiliency of Non-Fullerene Organic Solar Cells
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Azzaya Khasbaatar, Andrew Cheng, Austin L. Jones, Justin J. Kwok, Sang Kyu Park, Jessica K. Komar, Oliver Lin, Nicholas E. Jackson, Qian Chen, Dean M. DeLongchamp, John R. Reynolds, and Ying Diao
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General Chemical Engineering ,Materials Chemistry ,General Chemistry - Published
- 2023
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39. Geology and Controls on Gold Enrichment at the Horne 5 Deposit and Implications for the Architecture of the Gold-Rich Horne Volcanogenic Massive Sulfide Complex, Abitibi Greenstone Belt, Canada
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Alexandre Krushnisky, Patrick Mercier-Langevin, Pierre-Simon Ross, Jean Goutier, Vicki McNicoll, Lyndsay Moore, Thomas Monecke, Simon E. Jackson, Zhaoping Yang, Duane C. Petts, and Claude Pilote
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Geophysics ,Geochemistry and Petrology ,Economic Geology ,Geology - Abstract
The Archean Horne 5 deposit, located in the Rouyn-Noranda district in the southern Abitibi greenstone belt, Canada, contains a total resource of 172.4 t Au (5.6 Moz) from 112.7 Mt of ore grading at 1.53 g/t Au. The deposit is part of the Au-rich Horne volcanogenic massive sulfide (VMS) complex that also includes the past-producing Horne mine (i.e., the Upper and Lower H zones plus small subsidiary lenses) that yielded 325.4 t Au (10.5 Moz Au) from 53.7 Mt of ore grading at 6.06 g/t Au. Combined, the Horne mine and Horne 5 deposit contain ~500 t Au (16 Moz), making them the world’s single largest accumulation of VMS-related Au. The Horne 5 deposit consists of stacked lenses of massive to semimassive sulfides alternating with extensive zones of disseminated and stringer sulfides. The mineralization is hosted within thick accumulations of steeply dipping dacitic to rhyodacitic volcaniclastic units of transitional to calc-alkaline magmatic affinity. Dacitic-rhyodacitic synvolcanic units (lobes, sills, and/or domes) intrude the host succession, which is also crosscut by a series of post-ore mafic and younger intermediate to felsic feldspar ± quartz porphyry dikes. A broad and diffuse halo of distal sericite-chlorite-epidote alteration extends outboard of intensely sericite-altered zones proximal to the sulfide lenses. Gold is interpreted to be synvolcanic on the basis of Au-rich massive sulfide clasts in the volcaniclastic units, the presence of preserved Au-rich primary pyrite, Au zones limited to the sulfide envelope, crosscutting deformed but unaltered and barren dikes, and the absence of typical syndeformation, orogenic-style alteration and mineralization despite overprinting high-strain corridors and faults. Gold is spatially associated with pyrite, sphalerite, and chalcopyrite, and its distribution is largely controlled by the higher porosity and permeability of the volcaniclastic host rocks, which are interpreted to have facilitated hydrothermal fluid circulation in the subseafloor environment. Synvolcanic intrusions and fine-grained tuffs overlying auriferous zones also influenced the distribution of the mineralization by acting as cap rocks to ascending fluids. Evidence suggests that Au enrichment at the Horne 5 deposit is due to efficient transport and precipitation of Au in the subseafloor environment, a favorable geodynamic setting (transitional to calc-alkaline magmatism over thick crust), and possible input of magmatic fluids as suggested by high Te and Cu in the mineralization. Minor and very local remobilization of metals occurred in response to regional deformation and associated greenschist facies metamorphism. The detailed study of the Horne 5 deposit geology and a review of the available information on the Horne mine and recent 3-D modeling indicate that the Horne 5 deposit may have formed higher in the stratigraphy than the Upper and Lower H orebodies of the former Horne mine, which originally formed a single lens. Therefore, the Horne Au-rich VMS complex originally formed as a stacked system in which the Horne 5 deposit was deposited above the Upper and Lower H zones and not in a distal or lateral position as previously proposed, indicating that a robust hydrothermal system was responsible for the formation of the world’s largest Au-rich VMS complex.
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- 2023
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40. Hybrid position and orientation tracking for a passive rehabilitation table-top robot.
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K. K. Wojewoda, Peter R. Culmer, Justin F. Gallagher, Andrew E. Jackson, and M. C. Levesley
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- 2017
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41. Managing Multiculturalism: Indigeneity and the Struggle for Rights in Colombia
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Jean E. Jackson
- Published
- 2019
42. In Silico Screening for Pesticide Candidates against the Desert Locust Schistocerca gregaria
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Graham E. Jackson, Gerd Gäde, and Heather G. Marco
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adipokinetic hormone ,desert locust ,Schistocerca gregaria ,in silico screening ,ZINC20 ,Science - Abstract
Adipokinetic hormone (AKH) is one of the most important metabolic neuropeptides in insects, with actions similar to glucagon in vertebrates. AKH regulates carbohydrate and fat metabolism by mobilizing trehalose and diacylglycerol into circulation from glycogen and triacylglycerol stores, respectively, in the fat body. The short peptide (8 to 10 amino acids long) exerts its function by binding to a rhodopsin-like G protein-coupled receptor located in the cell membrane of the fat body. The AKH receptor (AKHR) is, thus, a potential target for the development of novel specific (peptide) mimetics to control pest insects, such as locusts, which are feared for their prolific breeding, swarm-forming behavior and voracious appetite. Previously, we proposed a model of the interaction between the three endogenous AKHs of the desert locust, Schistocerca gregaria, and the cognate AKHR (Jackson et al., Peer J. 7, e7514, 2019). In the current study we have performed in silico screening of two databases (NCI Open 2012 library and Zinc20) to identify compounds which may fit the endogenous Schgr-AKH-II binding site on the AKHR of S. gregaria. In all, 354 compounds were found to fit the binding site with glide scores < −8. Using the glide scores and binding energies, 7 docked compounds were selected for molecular dynamic simulation in a phosphatidylcholine membrane. Of these 7 compounds, 4 had binding energies which would allow them to compete with Schgr-AKH-II for the receptor binding site and so are proposed as agonistic ligand candidates. One of the ligands, ZINC000257251537, was tested in a homospecific in vivo biological assay and found to have significant antagonistic activity.
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- 2022
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43. End-of-Life Care for Patients With Metastatic Renal Cell Carcinoma in the Era of Oral Anticancer Therapy
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Hannah E. Dzimitrowicz, Lauren E. Wilson, Bradford E. Jackson, Lisa P. Spees, Christopher D. Baggett, Melissa A. Greiner, Deborah R. Kaye, Tian Zhang, Daniel George, Charles D. Scales, Jessica E. Pritchard, Michael S. Leapman, Cary P. Gross, Michaela A. Dinan, and Stephanie B. Wheeler
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Oncology ,Oncology (nursing) ,Health Policy - Abstract
PURPOSE: New therapies including oral anticancer agents (OAAs) have improved outcomes for patients with metastatic renal cell carcinoma (mRCC). However, little is known about the quality of end-of-life (EOL) care and systemic therapy use at EOL in patients receiving OAAs or with mRCC. METHODS: We retrospectively analyzed EOL care for decedents with mRCC in two parallel cohorts: (1) patients (RCC diagnosed 2004-2015) from the University of North Carolina's Cancer Information and Population Health Resource (CIPHR) and (2) patients (diagnosed 2007-2015) from SEER-Medicare. We assessed hospice use in the last 30 days of life and existing measures of poor-quality EOL care: systemic therapy, hospital admission, intensive care unit admission, and > 1 ED visit in the last 30 days of life; hospice initiation in the last 3 days of life; and in-hospital death. Associations between OAA use, patient and provider characteristics, and EOL care were examined using multivariable logistic regression. RESULTS: We identified 410 decedents in the CIPHR cohort (53.4% received OAA) and 1,508 in SEER-Medicare (43.5% received OAA). Prior OAA use was associated with increased systemic therapy in the last 30 days of life in both cohorts (CIPHR: 26.5% v 11.0%; P < .001; SEER-Medicare: 23.4% v 11.7%; P < .001), increased in-hospital death in CIPHR, and increased hospice in the last 30 days in SEER-Medicare. Older patients were less likely to receive systemic therapy or be admitted in the last 30 days or die in hospital. CONCLUSION: Patients with mRCC who received OAAs and younger patients experienced more aggressive EOL care, suggesting opportunities to optimize high-quality EOL care in these groups.
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- 2023
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44. Race, geography, and risk of breast cancer treatment delays: A population‐based study 2004–2015
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Katherine E. Reeder‐Hayes, Bradford E. Jackson, Christopher D. Baggett, Tzy‐Mey Kuo, Jacquelyne J. Gaddy, Matthew R. LeBlanc, Emily F. Bell, Laura Green, and Stephanie B. Wheeler
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Cancer Research ,Oncology - Published
- 2023
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45. FRED-SD: A real-time database for state-level data with forecasting applications
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Kathryn O. Bokun, Laura E. Jackson, Kevin L. Kliesen, and Michael T. Owyang
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Business and International Management - Published
- 2023
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46. Comparative life cycle assessment of corn stover conversion by decentralized biomass pyrolysis-electrocatalytic hydrogenation versus ethanol fermentation
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Sabyasachi Das, James E. Anderson, Robert De Kleine, Timothy J. Wallington, James E. Jackson, and Christopher M. Saffron
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Fuel Technology ,Renewable Energy, Sustainability and the Environment ,Energy Engineering and Power Technology - Abstract
Biomass fast pyrolysis followed by electrocatalytic hydrogenation (Py-ECH) with renewable electricity outperforms cellulosic ethanol in three environmental impact categories.
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- 2023
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47. Association Between Race, Gender, and Pediatric Postoperative Outcomes: An Updated Retrospective Review
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Jordan E, Jackson, Ganesh, Rajasekar, Olivia, Vukcevich, Brian A, Coakley, Miriam, Nuño, and Payam, Saadai
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Male ,Postoperative Complications ,Humans ,Appendectomy ,Female ,Surgery ,Length of Stay ,Child ,Appendicitis ,United States ,Retrospective Studies - Abstract
There has not been a recent evaluation of the association between racial and gender and surgical outcomes in children. We aimed to evaluate improvements in race- and gender-related pediatric postoperative outcomes since a report utilizing the Kids' Inpatient Database data from 2003 to 2006.Using Kids' Inpatient Database (2009, 2012, 2016), we identified 245,976 pediatric patients who underwent appendectomy for acute appendicitis (93.6%), pyloromyotomy for pyloric stenosis (2.7%), empyema decortication (1.6%), congenital diaphragmatic hernia repair (0.7%), small bowel resection for intussusception (0.5%), or colonic resection for Hirschsprung disease (0.2%). The primary outcome was the development of postoperative complications. Multivariable logistic regression was used to evaluate risk-adjusted associations among race, gender, income, and postoperative complications.Most patients were male (61.5%) and 45.7% were White. Postoperative complications were significantly associated with male gender (P 0.0001) and race (P 0.0001). After adjustment, Black patients were more likely to experience any complication than White patients (adjusted odds ratio 1.3, confidence interval 1.2-1.4), and males were more likely than females (adjusted odds ratio 1.3, confidence interval 1.2-1.4).No clear progress has been made in eliminating race- or gender-based disparities in pediatric postoperative outcomes. New strategies are needed to better understand and address these disparities.
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- 2023
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48. Quantifying the Sorptive Behavior of Traditional Horticultural Substrate Components Based on Initial Hydraulic Conditioning
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Paul C. Bartley, Ted C. Yap, Brian E. Jackson, William C. Fonteno, Michael D. Boyette, and Bernardo Chaves-Cordoba
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Horticulture - Abstract
The ability of a substrate component (organic or inorganic) to capture and retain water (hydration and wettability) is important to investigate and promote water-use–efficient practices. Many factors may play a role in the wettability of the material, including the processing of the material and its initial handling. The goal of this experiment was to determine the effect of moisture content (MC) on the sorptive behavior of substrates after an initial and secondary hydration cycle. Coir, peat, and aged pine bark were evaluated at a 33%, 50%, and 66% MC by weight. At all moisture levels, coir and bark were minimally affected by MC or the initial hydration cycle. Peat was the most vulnerable to changes in sorptive behavior as a result of wetting and drying cycles. After a wetting and drying cycle, the maximum volumetric water content of peat from surface irrigation was reduced 21.5% (volumetrically), more than three times any other treatment. The hydration efficiency of peat was improved when blended with as little as 15% coir. These experiments provide evidence that MC and initial handling of the substrate can lead to differences in initial water use efficiency.
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- 2023
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49. Patient- and Clinician-Reported Outcomes in Human Papillomavirus-Associated Tonsillar Carcinoma Treated With Unilateral and Bilateral Intensity Modulated Radiation Therapy–A Substudy From TROG 12.01
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Lachlan McDowell, Danny Rischin, Madeleine King, Lizbeth Kenny, Sandro Porceddu, Christopher Wratten, Andrew Macann, James E. Jackson, Mathias Bressel, Tsien Fua, Charles Lin, Chen Liu, and June Corry
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Cancer Research ,Radiation ,Oncology ,Radiology, Nuclear Medicine and imaging - Abstract
The aim of this TROG 12.01 substudy was to report longitudinal variations in patient- (PRO) and clinician-reported outcomes based on receipt of unilateral (URT) or bilateral radiation therapy (BRT).Patients with lateralized T1-2 N1-2b human papillomavirus-associated tonsillar carcinoma (AJCC7) enrolled on TROG 12.01 were eligible. The primary endpoint was patient-reported radiation symptom severity score (MDASI-RSS) at 2 years, a composite of 9 MDASI-Head and Neck (HN) symptom items. Secondary endpoints included patient-reported symptom burden and interference (MDASI-HN), quality of life (FACT-HN), emotional distress (HADS), return to work (RTW), clinician-reported performance status scale (PSS-HN), and late adverse events (CTCAE). Mean MDASI-RSS, symptom severity (MDASI-SS), symptom interference (MDASI-SI) and selected single items were compared 1 week, 3 months, and 2 years post-RT.Seventy-four patients were eligible for analysis (26 URT, 48 BRT). Median follow-up was 3.7 years (1.8-5.2 years). Sociodemographic, staging, and treatment variables were mostly balanced, with larger primaries observed in the BRT group. Four regional failures were reported (3 URT, 1 BRT), including one isolated contralateral regional failure in the URT cohort. Mean MDASI-RSS scores did not differ at 2 years (URT vs BRT, 1.1 vs 1.3; difference 0.1 [95% CI: -0.7 to 0.9], P = .75) or at any other time points for the MDASI-RSS, MDASI-SS, and MDASI-SI scores, except for worse MDASI-SI 1 week after treatment in the BRT group (4.7 vs 5.6). Fatigue (6.6 vs 5.4) at 1 week and dry mouth (3.5 vs 2.0) at 2 years were also worse in the BRT group. FACT-HN, HADS, RTW, PSS-HN, and CTCAE results were similar across the follow-up period.In this favorable-risk cohort, treatment laterality resulted in fewer differences than anticipated in patient-reported or clinician-reported outcomes. Two years after treatment patients treated with BRT reported significantly worse dry mouth. Longer follow-up is needed to determine the impact of treatment laterality on late effects.
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- 2023
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50. The correlation between severe complications and blood group types in COVID-19 patients; with possible role of T polyagglutination in promoting thrombotic tendencies
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Gasim Dobie, Sarah Abutalib, Wafa Sadifi, Mada Jahfali, Bayan Alghamdi, Asmaa Khormi, Taibah Alharbi, Munyah Zaqan, Zahra M Baalous, Abdulrahim R Hakami, Mohammed H Nahari, Abdullah A Mobarki, Muhammad Saboor, Mohammad S Akhter, Abdullah Hamadi, Denise E Jackson, and Hassan A Hamali
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General Medicine - Abstract
Introduction Coronavirus disease-19 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is still posing detrimental effects on people. An association between contracting COVID-19 and the ABO blood group type has been determined. However, factors that determine the severity of COVID-19 are not yet fully understood. Thus, the current study aimed to investigate whether the ABO blood group type has a role in the severity of complications due to COVID-19. Materials and methods Eighty-Six ICU-admitted COVID-19 patients and 80 matched-healthy controls were recruited in the study from Baish general hospital, Saudi Arabia. ABO blood grouping, complete blood count (CBC), CBC-derived inflammatory markers, coagulation profile, D-Dimer and anti-T antigen were reported. Results Our data showed that patients with blood groups O and B are more protective against severe complications from COVID-19, as compared to patients with blood groups A and AB. This could be partially attributed to the presence of anti-T in blood group A individuals, compared to non-blood group A. Conclusion The current study reports an association between the ABO blood group and the susceptibility to severe complications from COVID-19, with a possible role of anti-T in driving the mechanism of the thrombotic tendency, as it was also correlated with an elevation in D-dimer levels.
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- 2023
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