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Sim DS, Mallari CR, Hermiston TW, Bae D, Lee S, Allen T, Gilner J, Kim SC, James AH. CT-001, a novel fast-clearing factor VIIa, enhanced the hemostatic activity in postpartum samples. Blood Adv 2024; 8:287-295. [PMID: 38039512 PMCID: PMC10824690 DOI: 10.1182/bloodadvances.2023011398] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 12/03/2023] Open
Abstract
ABSTRACT The hemostatic system is upregulated to protect pregnant mothers from hemorrhage during childbirth. Studies of the details just before and after delivery, however, are lacking. Recombinant factor VIIa (rFVIIa) has recently been granted approval by the European Medicines Agency for the treatment of postpartum hemorrhage (PPH). A next-generation molecule, CT-001, is being developed as a potentially safer and more efficacious rFVIIa-based therapy. We sought to evaluate the peripartum hemostatic status of pregnant women and assess the ex vivo hemostatic activity of rFVIIa and CT-001 in peripartum blood samples. Pregnant women from 2 study sites were enrolled in this prospective observational study. Baseline blood samples were collected up to 3 days before delivery. Postdelivery samples were collected 45 (±15) minutes after delivery. Between the 2 time points, soluble fibrin monomer and D-dimer increased whereas tissue factor, FVIII, FV, and fibrinogen decreased. Interestingly, the postdelivery lag time and time to peak in the thrombin generation assay were shortened, and the peak thrombin generation capacity was maintained despite the reduced levels of coagulation proteins after delivery. Furthermore, both rFVIIa and CT-001 were effective in enhancing clotting activity of postdelivery samples in activated partial thromboplastin time, prothrombin time, thrombin generation, and viscoelastic hemostatic assays, with CT-001 demonstrating greater activity. In conclusion, despite apparent ongoing consumption of coagulation factors at the time of delivery, thrombin output was maintained. Both rFVIIa and CT-001 enhanced the upregulated hemostatic activity in postdelivery samples, and consistent with previous studies comparing CT-001 and rFVIIa in vitro and in in vivo, CT-001 demonstrated greater activity than rFVIIa.
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Affiliation(s)
| | | | | | | | - Sul Lee
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Terrence Allen
- Department of Anesthesiology, Duke University, Durham, NC
| | - Jennifer Gilner
- Department of Obstetrics and Gynecology, Duke University, Durham, NC
| | - Seung-Chul Kim
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Andra H. James
- Department of Obstetrics and Gynecology, Duke University, Durham, NC
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Penner LS, Armitage CJ, Thornley T, Whelan P, Chuter A, Allen T, Elliott RA. What affected UK adults' adherence to medicines during the COVID-19 pandemic? Cross-sectional survey in a representative sample of people with long-term conditions. Z Gesundh Wiss 2023; 32:1-14. [PMID: 36691578 PMCID: PMC9849112 DOI: 10.1007/s10389-022-01813-0] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 12/19/2022] [Indexed: 01/20/2023]
Abstract
Aim Medicines non-adherence is associated with poorer outcomes and higher costs. COVID-19 affected access to healthcare, with increased reliance on remote methods, including medicines supply. This study aimed to identify what affected people's adherence to medicines for long-term conditions (LTCs) during the pandemic. Subject and methods Cross-sectional online survey of UK adults prescribed medicines for LTCs assessing self-reported medicines adherence, reasons for non-adherence (using the capability, opportunity and motivation model of behaviour [COM-B]), medicines access and COVID-19-related behaviours. Results The 1746 respondents reported a mean (SD) of 2.5 (1.9) LTCs, for which they were taking 2.4 (1.9) prescribed medicines, 525 (30.1%) reported using digital tools to support ordering or taking medicines and 22.6% reported medicines non-adherence. No access to at least one medicine was reported by 182 (10.4%) respondents; 1048 (60.0%) reported taking at least one non-prescription medicine as a substitute; 409 (23.4%) requested emergency supply from pharmacy for at least one medicine. Problems accessing medicines, being younger, male, in the highest socioeconomic group and working were linked to poorer adherence. Access problems were mostly directly or indirectly related to the COVID-19 pandemic. Respondents were generally lacking in capabilities and opportunities, but disruptions to habits (automatic motivation) was the major reason for non-adherence. Conclusion Navigating changes in how medicines were accessed, and disruption of habits during the COVID-19 pandemic, was associated with suboptimal adherence. People were resourceful in overcoming barriers to access. Solutions to support medicines-taking need to take account of the multiple ways that medicines are prescribed and supplied remotely. Supplementary Information The online version contains supplementary material available at 10.1007/s10389-022-01813-0.
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Affiliation(s)
- L. S. Penner
- Janssen-Cilag GmbH, Johnson & Johnson Platz 1, 41470 Neuss, Germany
- Manchester Centre for Health Economics, Division of Population Health, Health Services Research and Primary Care, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, 4th Floor, Jean McFarlane Building, Manchester, M13 9PL UK
| | - C. J. Armitage
- Manchester Centre for Health Psychology, Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Coupland Building 1, Manchester, M13 9PL; Manchester University NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, M13 9PT; NIHR Greater Manchester Patient Safety Translational Research Centre, University of Manchester, Coupland Building 1, Manchester, M13 9PL UK
| | - T. Thornley
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD UK
| | - P. Whelan
- Digital Health Technical Lead, Centre for Health Informatics, Division of Informatics, Imaging and Data Science| School of Health Sciences | Faculty of Biology, Medicine and Health, University of Manchester, Vaughan House, Manchester, M13 9PL UK
| | - A. Chuter
- Manchester Centre for Health Economics, Division of Population Health, Health Services Research and Primary Care, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, 4th Floor, Jean McFarlane Building, Manchester, M13 9PL UK
| | - T. Allen
- Manchester Centre for Health Economics, Division of Population Health, Health Services Research and Primary Care, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, 4th Floor, Jean McFarlane Building, Manchester, M13 9PL UK
- Danish Centre for Health Economics, University of Southern Denmark, Odense, Denmark
| | - R. A. Elliott
- Manchester Centre for Health Economics, Division of Population Health, Health Services Research and Primary Care, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, 4th Floor, Jean McFarlane Building, Manchester, M13 9PL UK
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Yurashevich M, Rosser M, Small M, Grotegut C, Kota N, Toffaletti J, Allen T. Evaluating the Association Between Fibrinogen and Rotational Thromboelastometry and the Progression to Severe Obstetric Hemorrhage. Clin Appl Thromb Hemost 2023; 29:10760296231175089. [PMID: 37186763 DOI: 10.1177/10760296231175089] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
AIM This study aims to investigate the ability of fibrinogen and rotational thromboelastometry (ROTEM) parameters measured at obstetric hemorrhage protocol initiation to predict severe hemorrhage. METHODS In this retrospective study we included patients whose hemorrhage was managed with an obstetric massive transfusion protocol. Fibrinogen and ROTEM parameters EXTEM clotting time (CT), clot formation time (CFT), alpha angle, A10, A20, lysis index 30 min after CT (LI30), FIBTEM A10, A20, were measured at initiation of the protocol with transfusion based on a predefined algorithm. Patients were grouped into either severe or nonsevere hemorrhage based on: peripartum fall in hemoglobin ≥4 g/dL, transfusion of ≥4 units of blood product, invasive procedures for hemorrhage control, intensive care unit admission, or death. RESULTS Of the 155 patients included, 108 (70%) progressed to severe hemorrhage. Fibrinogen, EXTEM alpha angle, A10, A20, FIBTEM A10, A20 were significantly lower in the severe hemorrhage group while the CFT was significantly prolonged in the severe hemorrhage group. In univariate analysis, predicted progression to severe hemorrhage yielded areas under the receiver operating characteristic curve (95% confidence interval [CI]) of: fibrinogen: 0.683 (0.591-0.776), CFT: 0.671 (0.553, 0.789), EXTEM alpha angle: 0.690 (0.577-0.803), A10: 0.693 (0.570-0.815), A20: 0.678 (0.563-0.793), FIBTEM A10: 0.726 (0.605-0.847), and A20: 0.709 (0.594-0.824). In a multivariable model, fibrinogen was independently associated with severe hemorrhage (odds ratio [95% CI] = 1.037 [1.009-1.066]) for every 50 mg/dL decrease in fibrinogen drawn at obstetric hemorrhage massive transfusion protocol initiation. CONCLUSION Both fibrinogen and ROTEM parameters measured at the initiation of an obstetric hemorrhage protocol are useful parameters for predicting severe hemorrhage.
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Affiliation(s)
- Mary Yurashevich
- Department of Anesthesiology, Duke University School of Medicine, Durham, NC, USA
| | - Morgan Rosser
- Department of Anesthesiology, Duke University School of Medicine, Durham, NC, USA
| | - Maria Small
- Department of Obstetrics and Gynecology, Duke University School of Medicine, Durham, NC, USA
| | - Chad Grotegut
- Department of Obstetrics and Gynecology, Duke University School of Medicine, Durham, NC, USA
| | - Nancy Kota
- Department of Anesthesiology, Duke University School of Medicine, Durham, NC, USA
| | - John Toffaletti
- Department of Pathology, Duke University School of Medicine, Durham, NC, USA
| | - Terrence Allen
- Department of Anesthesiology, Duke University School of Medicine, Durham, NC, USA
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Claiborne D, Detwiler Z, Okawa K, Bateson T, Chen T, Scadden D, Boutwell C, Allen T. OP 6.4 – 00096 High-efficiency CRISPR/Cas9-mediated disruption of ccr5 in human hematopoietic stem progenitor cells generates HIV-refractory immune systems. J Virus Erad 2022. [DOI: 10.1016/j.jve.2022.100249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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Nyakutsikwa B, Allen T, Walsh T, Pretty I, Birch S, Tickle M, Moore D. Who are the 10%? Characteristics of the populations and communities receiving fluoridated water in England. Community Dent Health 2022; 39:247-253. [PMID: 35946922 DOI: 10.1922/cdh_00092nyakutsikwa07] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVES In England, around 10% of the population receive optimally fluoridated water. This coverage has evolved through a combination of historical local decision-making and natural geography, rather than being strategically targeted at the national level. It is important to understand if the current distribution is equitable according to indicators of oral health need and to identify any population-level differences in socio-demographic characteristics that could introduce bias to studies evaluating the effectiveness of water fluoridation. BASIC RESEARCH DESIGN Descriptive analysis comparing the census characteristics of populations that received optimally fluoridated (=/⟩ 0.7 mg F/L) and non-fluoridated water (⟨0.7 mg F/L) between 2009 and 2020. RESULTS Populations receiving fluoridated water between 2009-2020 were on average slightly younger, more urban, more deprived, with lower education levels, higher unemployment and lower car and home ownership than the populations who received non-fluoridated water. They are more ethnically diverse, with a higher proportion of Asian ethnicity and a lower proportion of White ethnicity, compared to the non-fluoridated population. DISCUSSION This descriptive analysis provides evidence that water fluoridation coverage within England is targeted reasonably equitably in relation to population-level indicators of need. It also confirms the need to consider the impact of underlying differences in age, deprivation, rurality, and ethnicity when evaluating the impact of water fluoridation on health outcomes in England.
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Affiliation(s)
- B Nyakutsikwa
- Division of Dentistry, The University of Manchester, UK
| | - T Allen
- Manchester Centre for Health Economics, Manchester, UK
| | - T Walsh
- Division of Dentistry, The University of Manchester, UK
| | - I Pretty
- Division of Dentistry, The University of Manchester, UK
| | - S Birch
- Manchester Centre for Health Economics, Manchester, UK
| | - M Tickle
- Division of Dentistry, The University of Manchester, UK
| | - D Moore
- Division of Dentistry, The University of Manchester, UK
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Kim J, Boehmer L, Plotkin E, Allen T, Gutman P, Shiller M, Brown S, Pan V. Enhancing Coordination Around Cancer Biomarker and Hereditary Genetic Testing Among Members of the Multidisciplinary Care Team. Am J Clin Pathol 2022. [DOI: 10.1093/ajcp/aqac126.310] [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: 11/11/2022] Open
Abstract
Abstract
Introduction/Objective
Advances in precision medicine necessitate a closer integration across pathologists, genetic counselors, and other members of the multidisciplinary cancer care team (MDT). Recognizing that physical distancing and fragmented communication may hinder care delivery, the Association of Community Cancer Centers (ACCC) ran a multi-year initiative to explore ways to improve MDT care coordination.
Methods/Case Report
ACCC held a multistakeholder leadership summit to identify and discuss critical issues regarding biomarker and hereditary genetic testing and the ways in which pathology and genetic counseling professionals interface with the cancer MDT. Through a consensus-driven process, participants identified key opportunities for achieving optimal integration. ACCC also conducted a national survey to explore barriers around biomarker and hereditary genetic testing. Building off these insights, ACCC conducted virtual workshops at three community cancer programs to improve processes around biomarker testing and targeted treatment planning.
Results (if a Case Study enter NA)
The pathology leadership summit identified the following priorities: 1) streamline and standardize the biomarker test ordering process; 2) improve tissue handling to optimize timely biomarker testing; 3) strengthen communication between pathologists and genetic counselors; 4) empower pathologists with leadership opportunities. In the ACCC survey (n=659), 57% indicated that some or most of their pathologists were generalists. 21% only held one general tumor board. 6% indicated that pathologists often do not attend tumor boards or cancer committee meetings. 64% indicated that pathologists can directly access some or all medical oncology patient records. 67% sent some or most biopsy samples out for biomarker testing. In the ACCC workshops, cancer programs in KS, NC, and NV identified ways to improve the timeliness of genetic counseling referrals and coordinate biomarker testing. Following the workshops, 64% indicated they planned to make moderate or significant changes in their processes.
Conclusion
Improving collaboration across pathologists, genetic counselors, and the rest of the cancer MDT may lead to more timely and comprehensive biomarker and hereditary genetic testing. These findings may help cancer programs refine processes of care.
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Affiliation(s)
- J Kim
- Quality, Q Synthesis LLC , Newtown, Pennsylvania , United States
| | - L Boehmer
- Association of Community Cancer Centers , Rockville, Maryland , United States
| | - E Plotkin
- Association of Community Cancer Centers , Rockville, Maryland , United States
| | - T Allen
- University of Mississippi , Jackson, Mississippi , United States
| | - P Gutman
- Holy Cross Hospital , Silver Spring, Maryland , United States
| | - M Shiller
- Baylor Scott & White Health , Dallas, Texas , United States
| | - S Brown
- Providence St. Joseph Hospital Orange , Orange, California , United States
| | - V Pan
- Cook County Health , Chicago, Illinois , United States
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Ratnappan R, Whitaker J, Allen T, Rock J, Howell M. 853 A novel expression based, non-invasive method to differentiate atopic dermatitis and psoriasis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.867] [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: 10/17/2022]
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8
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Kaur K, Allen T, Hill K, Howell M, Jansen B, Rock J, Clarke L, Ibarra C. 629 Performance monitoring of a streamlined and scalable non-invasive gene expression assay for pigmented lesions. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.640] [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: 10/17/2022]
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O’Malley L, Macey R, Allen T, Brocklehurst P, Thomson F, Rigby J, Lalloo R, Tomblin Murphy G, Birch S, Tickle M. Workforce Planning Models for Oral Health Care: A Scoping Review. JDR Clin Trans Res 2022; 7:16-24. [PMID: 33323035 PMCID: PMC8674798 DOI: 10.1177/2380084420979585] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND For health care services to address the health care needs of populations and respond to changes in needs over time, workforces must be planned. This requires quantitative models to estimate future workforce requirements that take account of population size, oral health needs, evidence-based approaches to addressing needs, and methods of service provision that maximize productivity. The aim of this scoping review was to assess whether and how these 4 elements contribute to existing models of oral health workforce planning. METHODS A scoping review was conducted. MEDLINE, Embase, HMIC, and EconLit were searched, all via OVID. Additionally, gray literature databases were searched and key bodies and policy makers contacted. Workforce planning models were included if they projected workforce numbers and were specific to oral health. No limits were placed on country. A single reviewer completed initial screening of abstracts; 2 independent reviewers completed secondary screening and data extraction. A narrative synthesis was conducted. RESULTS A total of 4,009 records were screened, resulting in 42 included articles detailing 47 models. The workforce planning models varied significantly in their use of data on oral health needs, evidence-based services, and provider productivity, with most models relying on observed levels of service utilization and demand. CONCLUSIONS This review has identified quantitative workforce planning models that aim to estimate future workforce requirements. Approaches to planning the oral health workforce are not always based on deriving workforce requirements from population oral health needs. In many cases, requirements are not linked to population needs, while in models where needs are included, they are constrained by the existence and availability of the required data. It is critical that information systems be developed to effectively capture data necessary to plan future oral health care workforces in ways that relate directly to the needs of the populations being served. KNOWLEDGE TRANSFER STATEMENT Policy makers can use the results of this study when making decisions about the planning of oral health care workforces and about the data to routinely collect within health services. Collection of suitable data will allow for the continual improvement of workforce planning, leading to a responsive health service and likely future cost savings.
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Affiliation(s)
- L. O’Malley
- Division of Dentistry, School of Medical Sciences, University of Manchester, Manchester Academic Health Sciences Centre, Manchester, UK
| | - R. Macey
- Division of Dentistry, School of Medical Sciences, University of Manchester, Manchester Academic Health Sciences Centre, Manchester, UK
| | - T. Allen
- Centre for Health Economics, University of Manchester, Manchester Academic Health Sciences Centre, Manchester, UK
| | - P. Brocklehurst
- NWORTH Clinical Trials Unit, University of Bangor, Bangor, UK
| | - F. Thomson
- Division of Dentistry, School of Medical Sciences, University of Manchester, Manchester Academic Health Sciences Centre, Manchester, UK
| | - J. Rigby
- WHO/PAHO Collaborating Centre on Health Workforce Planning and Research, Dalhousie University, Halifax, Canada
- Research, Innovation and Discovery, Nova Scotia Health Authority, Halifax, Canada
| | - R. Lalloo
- School of Dentistry, The University of Queensland, Brisbane, Australia
| | - G. Tomblin Murphy
- WHO/PAHO Collaborating Centre on Health Workforce Planning and Research, Dalhousie University, Halifax, Canada
- Research, Innovation and Discovery, Nova Scotia Health Authority, Halifax, Canada
| | - S. Birch
- Centre for the Business and Economics of Health, Faculty of Business Economics and Law, The University of Queensland, Brisbane, Australia
| | - M. Tickle
- Division of Dentistry, School of Medical Sciences, University of Manchester, Manchester Academic Health Sciences Centre, Manchester, UK
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Taberner M, Allen T, O'keefe J, Cohen DD. Contextual considerations using the 'control-chaos continuum' for return to sport in elite football - Part 1: Load planning. Phys Ther Sport 2021; 53:67-74. [PMID: 34839202 DOI: 10.1016/j.ptsp.2021.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 10/28/2021] [Accepted: 10/31/2021] [Indexed: 12/26/2022]
Abstract
The 'control-chaos continnum' is an adaptable framework developed to guide the on-pitch rehabilitation process in elite football. One of the key objectives of the continuum is to progressively return players to their preinjury chronic running load, while incorporating the qualitative aspects of movement and cognitive stresses integral to competitive match-play. Whilst injury and player-specific considerations are key to an individualised rehabilitation approach, a host of contextual factors also play an important role in return to sport (RTS) planning. In this article, we highlight some key intrinsic and extrinsic contextual factors for the practitioner to consider in the RTS planning process to help mitigate reinjury risk upon a return to team training. While a return to chronic running load is generally a critical component of the framework, we highlight circumstances in elite football where it is a less relevant factor in RTS decision-making.
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Affiliation(s)
- M Taberner
- Performance and Medical Department, Orlando Magic Basketball Club, Orlando, USA; School of Sport and Exercise Sciences, Liverpool John Moore's University, Liverpool, UK.
| | - T Allen
- Arsenal Performance and Research Team, Arsenal Football Club, London, UK; Institute of Coaching and Performance, University of Central Lancashire, Preston, UK. https://twitter.com/tallen_5
| | - J O'keefe
- Academy Sports Science Department, Everton Football Club, Liverpool, UK. https://twitter.com/JasonOkeefe10
| | - D D Cohen
- Masira Research Institute, University of Santander (UDES), Bucaramanga, Colombia; Sports Science Center (CCD), Colombian Ministry of Sport (Mindeporte), Colombia. https://twitter.com/danielcohen1971
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11
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Allen T, Wilson S, Cohen DD, Taberner M. Drill design using the 'control-chaos continuum': Blending science and art during return to sport following knee injury in elite football. Phys Ther Sport 2021; 50:22-35. [PMID: 33862346 DOI: 10.1016/j.ptsp.2021.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 01/31/2021] [Accepted: 02/16/2021] [Indexed: 11/15/2022]
Abstract
Establishing the level of risk, planning and adapting the return to sport (RTS) process following a complex knee injury involves drawing on a combination of relevant high-quality evidence and practitioner experience. On-pitch rehabilitation is a critical element of this process, providing an effective transition from rehabilitation to team training. The 'control-chaos continuum' (CCC) is an adaptable framework for on-pitch rehabilitation moving from high control to high chaos, progressively increasing running load demands and incorporating greater perceptual and neurocognitive challenges within sport-specific drills. Drills are a key element of the CCC, and are designed to ensure specificity, ecological validity and maintaining player interest. We showcase drill progression through the phases of the CCC, highlighting the use of constraints to create drills that incorporate the physical, technical, tactical and injury-specific needs of the player. We also provide recommendations to help practitioners create training session content using the CCC to help replicate the demands of team training within their own environment.
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Affiliation(s)
- T Allen
- Arsenal Performance and Research Team, Arsenal Football Club, London, UK; Institute of Coaching and Performance, University of Central Lancashire, Preston, UK.
| | - S Wilson
- Arsenal Performance and Research Team, Arsenal Football Club, London, UK
| | - D D Cohen
- Masira Research Institute, University of Santander (UDES), Bucaramanga, Colombia; Sports Science Center (CCD), Colombian Ministry of Sport (Mindeporte), Colombia
| | - M Taberner
- School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.
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Bernicker E, Xiao Y, Abraham A, Redpath S, Engstrom-Melnyk J, Croix D, Yang B, Shah R, Allen T. OFP01.07 Delayed ALK Testing Results in the US - Analysis with a Large Real World Oncology Database. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2020.10.039] [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]
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13
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Favaloro EJ, Amgalan A, Allen T, Othman M, Ahmadzia HK. "Systematic review of viscoelastic testing (TEG/ROTEM) in obstetrics and recommendation from the women's SSC of the ISTH": Response to comment from Kitchen et al. J Thromb Haemost 2020; 18:2420-2422. [PMID: 32881339 DOI: 10.1111/jth.15007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/08/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Emmanuel J Favaloro
- Haematology, ICPMR, NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia
| | | | - Terrence Allen
- Department of Anesthesiology, Duke University Hospital, Durham, NC, USA
| | - Maha Othman
- Department of Biomedical and Molecular Sciences, School of Medicine, Queen's University, Kingston, ON, Canada
- School of Baccalaureate Nursing, St. Lawrence College, Kingston, ON, Canada
| | - Homa K Ahmadzia
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA
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Fergus CA, Allen T, Parker M, Pearson G, Storer L, Dawson K. Localising evidence for decision-making: participatory approach to inform schistosomiasis control. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.064] [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: 11/14/2022] Open
Abstract
Abstract
Background
The linear theories of change which ground many interventions do not account for the complex processes and systems in which they are implemented. This reductionist approach prioritises statistical methods which do not accommodate the stochastic, non-linear, dynamic interactions between humans and their environment. The inclusion of practitioners in the process of evidence development and utilisation of complex systems methods mitigates these issues and results in locally relevant, timely evidence for decision-making.
Methods
The aim of this work was to develop localised evidence for decision-making for schistosomiasis control in Uganda, Malawi, and Tanzania. Workshops were conducted with practitioners from the Ministries of Health at various levels and partner organisations to identify evidence needs for their decision-making processes and perceptions of disease transmission and control activities. Participatory systems mapping was used to identify factors directly and indirectly related to transmission. The maps were synthesised to a master complex systems map, which served as the blueprint for a generalised spatial agent-based model and specific ABMs tailored to the evidence needs of decision-makers.
Results
There was a gap in available evidence for practitioners to advocate for resources within the MoH and government budgets, as well as intervention efficacy and resource allocation. The adaptable and data-inclusive characteristics of the AMBs made them well-suited to produce localised outputs. Converted to NetLogo with a tailored user interface, these models were appropriate and responsive to the needs of decision-makers from village to national levels and across country contexts.
Conclusions
Used together, participatory and agent-based modelling resulted in the development of responsive and relevant evidence for practitioner decision-making. This process is generalisable and transferable to other diseases and locations outside of those in this study.
Key messages
The use of participatory systems mapping to develop agent-based models resulted in relevant and timely evidence for practitioner decision-making. The approach used here is transferable and generalisable outside schistosomiasis control and the contexts in this study.
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Affiliation(s)
- C A Fergus
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
- Department of International Development, London School of Economics and Political Science, London, UK
| | - T Allen
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
- Department of International Development, London School of Economics and Political Science, London, UK
| | - M Parker
- Department of Global Health and Development, LSHTM, London, UK
| | - G Pearson
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
| | - L Storer
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
| | - K Dawson
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
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15
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Pearson G, Parker M, Storer E, Allen T, Fergus C. Participatory systems mapping for localised evidence and decision-making: helminth control, SSA. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.1277] [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: 11/14/2022] Open
Abstract
Abstract
Background
Evidence-informed decision-making to assist public health practitioners in local-level programme implementation requires adaptive approaches to research, policy and practice. To address these needs there is focus on using participatory methods. Adopting such methods, this research asks: what are the evidence needs of local public health practitioners? How do evidence and decision-making processes interact? We reflect on the process of using Participatory Systems Mapping (PSM) and implications for localising evidence-informed decision-making.
Methods
We conducted workshops with district and national-level MoH personnel in Uganda and Malawi using PSM to elicit insights into local modes of schistosomiasis transmission and control, and group discussions on evidence needs and use in implementing control programmes. PSM maps are analysed, triangulated with thematic analysis of group discussion transcripts.
Results
Analysing PSM outputs alongside discussions on evidence provides critical methodological and policy insights with implications for localised evidence and decision-making. Further insights into the local dynamics of public health decision-making are gained by triangulating PSM with discussions on the meanings and importance of 'factors' identified. Information which is accessible and useful for local practitioner's decision-making in implementing disease control measures does not always align with academic production and dissemination of evidence, nor across levels where policy is produced or implemented.
Conclusions
An array of factors influence local decision-making with implications for global health policies and practices such as for schistosomiasis control. Processes of decision-making and evidence needs of local practitioners need to be better understood within broader context. Evidence and knowledge production on health interventions rarely feedback or respond to local implementation needs, decision-making practices and public health practitioners.
Key messages
Processes of decision-making and evidence needs of local practitioners need to be better understood within broader context. Evidence and knowledge production on health interventions rarely feedback or respond to local implementation needs, decision-making practices and public health practitioners.
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Affiliation(s)
- G Pearson
- Institute for Global Health and Development, Queen Margaret University, Edinburgh, UK
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
| | - M Parker
- Department of Global Health and Development, LSHTM, London, UK
| | - E Storer
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
| | - T Allen
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
| | - C Fergus
- Firoz Lalji Centre for Africa, London School of Economics and Political Science, London, UK
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16
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Nichols L, Knighton A, Brunisholz K, Elbel R, Smith G, Choberka A, Belnap T, Allen T, Moore M, Srivastava R. Adapting a Complex, Integrated Health and Social Services Intervention in Two Communities. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- L. Nichols
- Intermountain Healthcare Salt Lake City UT United States
| | - A. Knighton
- Intermountain Healthcare Murray UT United States
| | | | - R. Elbel
- SelectHealth Murray UT United States
| | - G. Smith
- Intermountain Healthcare Salt Lake City UT United States
| | - A. Choberka
- Intermountain Healthcare Ogden UT United States
| | - T. Belnap
- Intermountain Healthcare Murray UT United States
| | - T. Allen
- Intermountain Healthcare Salt Lake City UT United States
| | - M. Moore
- Intermountain Healthcare Salt Lake City UT United States
| | - R. Srivastava
- Intermountain Healthcare Salt Lake City UT United States
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Amgalan A, Allen T, Othman M, Ahmadzia HK. Systematic review of viscoelastic testing (TEG/ROTEM) in obstetrics and recommendations from the women's SSC of the ISTH. J Thromb Haemost 2020; 18:1813-1838. [PMID: 32356929 DOI: 10.1111/jth.14882] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/13/2020] [Accepted: 04/24/2020] [Indexed: 12/13/2022]
Abstract
Thromboelastography (TEG) and rotational thromboelastometry (ROTEM) are point-of-care viscoelastic devices that use whole blood samples to assess coagulation and fibrinolysis. These devices have been studied extensively in cardiac surgery, but there is limited robust evidence supporting its use in obstetrics. The hesitancy toward its routine use in obstetrics may be due to the current lack of randomized controlled trials and large observational studies. The study aims to systematically review studies that investigated TEG/ROTEM use in pregnancy or peripartum, and to provide recommendations for future studies to fill current research gaps. We performed a systematic review of studies on viscoelastic testing in obstetrics. Included studies were original research, used TEG or ROTEM during pregnancy or peripartum, and published in English. Ninety-three studies, spanning 31 years from 1989 to 2020 and with a total of 32,817 participants, were included. Sixty-two (66.7%) of the studies used TEG and 31 (33.3%) used ROTEM. To date, there are a total of two randomized controlled trials on TEG/ROTEM use in obstetrics. ROTEM may be used to guide transfusion therapy for postpartum hemorrhage. TEG and ROTEM can detect the hypercoagulable changes associated with pregnancy. Variability between study protocols and results suggests the need for future large prospective high-quality studies with standardized protocols to investigate the utility of TEG/ROTEM in assessing risk for thrombosis and hemorrhage as well as in guiding prophylaxis and treatment in obstetric patients. This review identifies the gaps and provides concrete recommendations for future studies to fill those gaps.
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Affiliation(s)
| | - Terrence Allen
- Department of Anesthesiology, Duke University Hospital, Durham, NC, USA
| | - Maha Othman
- Department of Biomedical and Molecular Sciences, School of Medicine, Queen's University, Kingston, ON, Canada
- School of Baccalaureate Nursing, St. Lawrence College, Kingston, ON, Canada
| | - Homa K Ahmadzia
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA
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Huang Y, Tzeng JY, Maguire R, Hoyo C, Allen T. The association between neuraxial anesthesia and the development of childhood asthma - a secondary analysis of the newborn epigenetics study cohort. Curr Med Res Opin 2020; 36:1025-1032. [PMID: 32212939 PMCID: PMC7269869 DOI: 10.1080/03007995.2020.1747417] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Objectives: Childhood asthma is a common chronic illness that has been associated with mode of delivery. However, the effect of cesarean delivery alone does not fully account for the increased prevalence of childhood asthma. We tested the hypothesis that neuraxial anesthesia used for labor analgesia and cesarean delivery alters the risk of developing childhood asthma.Methods: Within the Newborn Epigenetics Study birth cohort, 196 mother and child pairs with entries in the electronic anesthesia records were included. From these records, data on maternal anesthesia type, duration of exposure, and drugs administered peripartum were abstracted and combined with questionnaire-derived prenatal risk factors and medical records and questionnaire-derived asthma diagnosis data in children. Logistic regression models were used to evaluate associations between type of anesthesia, duration of anesthesia, and the development of asthma in males and females.Results: We found that longer duration of epidural anesthesia was associated with a lower risk of asthma in male children (OR = 0.80; 95% CI = 0.66-0.95) for each hour of epidural exposure. Additionally, a unit increase in the composite dose of local anesthetics and opioid analgesics administered via the spinal route was associated with a lower risk of asthma in both male (OR = 0.59, 95% CI = 0.36-0.96) and female children (OR 0.26, 95% CI 0.09-0.82).Conclusion: Our data suggest that peripartum exposure to neuraxial anesthesia may reduce the risk of childhood asthma primarily in males. Larger human studies and model systems with longer follow-up are required to elucidate these findings.
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Affiliation(s)
- Yueyang Huang
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC, USA
| | - Jung-Ying Tzeng
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, USA
- Department of Statistics, North Carolina State University, Raleigh, NC, USA
| | - Rachel Maguire
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, USA
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Cathrine Hoyo
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, USA
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Terrence Allen
- Department of Anesthesiology, Duke University School of Medicine, Durham, NC, USA
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Cogswell R, Teigen L, Allen T, Estep J, Araujo R, Schultz J, John R, Martin C, Trachtenberg B. Measurement of Pectoralis Muscle Quantity and Attenuation by Computed Tomography Using Routinely Available Software is Feasible and Predicts Mortality after LVAD Implantation. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.1134] [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] Open
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20
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Huff AG, Allen T, Whiting K, Williams F, Hunter L, Gold Z, Madoff LC, Karesh WB. Biosurveillance: a systematic review of global infectious disease surveillance systems from 1900 to 2016. REV SCI TECH OIE 2018; 36:513-524. [PMID: 30152467 DOI: 10.20506/rst.36.2.2670] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Biosurveillance is crucial to detect, identify and minimise the negative consequences of infectious disease. Its value to society and importance to global public health and global health security are growing. Despite the long history and global importance of biosurveillance, a systematic review of all existing biosurveillance systems across the 'One Health' spectrum has not yet been published. This study conducted a systematic review to identify all extant and defunct biosurveillance systems from 1900 to 2016. Of the 815 systems examined, the majority surveyed human, animal or plant data discretely. Some 105 collected human and animal data, whereas only 31 collected data on all three categories. The authors found a large increase in the number of global biosurveillance systems between 1900 and 2008, but a reduction in the number of biosurveillance systems from 2008 to the present. The number of syndromic systems created, versus laboratory-based biosurveillance systems, increased rapidly after 1980 across the globe.
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Abstract
The disparity in maternal mortality for African American women remains one of the greatest public health inequities in the United States (US). To better understand approaches toward amelioration of these differences, we examine settings with similar disparities in maternal mortality and "near misses" based on race/ethnicity. This global analysis of disparities in maternal mortality/morbidity will focus on middle- and high-income countries (based on World Bank definitions) with multiethnic populations. Many countries with similar histories of slavery and forced migration demonstrate disparities in health outcomes based on social determinants such as race/ethnicity. We highlight comparisons in the Americas between the US and Brazil-two countries with the largest populations of African descent brought to the Americas primarily through the transatlantic slave trade. We also address the need to capture race/ethnicity/country of origin in a meaningful way in order to facilitate transnational comparisons and potential translatable solutions. Race, class, and gender-based inequities are pervasive, global themes. This approach is human rights-based and consistent with the UN Millennium Development Goals (MDG) and post 2015-sustainable development goals' aim to place women's health the context of health equity/women's rights. Solutions to these issues of inequity in maternal mortality are nation-specific and global.
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Affiliation(s)
- M Small
- Duke University School of Medicine, Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Durham, NC
| | - T Allen
- Duke University School of Medicine, Department of Anesthesiology, Division of Women’s Anesthesia, Durham, NC
| | - HL Brown
- Duke University School of Medicine, Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Durham, NC
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22
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Yamamoto Y, Nagaoka K, Kamite Y, Watanabe G, Allen T, Stansfield F, Taya K. Different origins of two corpora lutea recovered from a pregnant African elephant (Loxodonta africana
). Reprod Domest Anim 2017; 52:1138-1141. [DOI: 10.1111/rda.13010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 05/23/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Y Yamamoto
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - K Nagaoka
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - Y Kamite
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - G Watanabe
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
| | - T Allen
- The Elephant Research Unit; Save Valley Conservancy Zimbabwe
- The Paul Mellon Laboratory; Suffolk UK
| | - F Stansfield
- The Elephant Research Unit; Save Valley Conservancy Zimbabwe
- Department of Production Animal Studies; Faculty of Veterinary Science; University of Pretoria; Onderstepoort South Africa
| | - K Taya
- Department of Veterinary Medicine; Tokyo University of Agriculture and Technology; Tokyo Japan
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23
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Allen T, Murray K, Zambrana-Torrelio C, Morse S, Rondinini C, di Marco M, Olival K, Daszak P. Corrigendum to “Global correlates of emerging zoonoses: Anthropogenic, environmental, and biodiversity risk factors” [Int. J. Infect. Dis. 53 (Supplement) (December 2016) 21]. Int J Infect Dis 2017. [DOI: 10.1016/j.ijid.2017.03.016] [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] Open
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Affiliation(s)
- J. Ambrosek
- University of Wisconsin-Madison, 1500 Engineering Drive 934 Engineering Research Building, Madison, Wisconsin 53706
| | - M. Anderson
- University of Wisconsin-Madison, 1500 Engineering Drive 934 Engineering Research Building, Madison, Wisconsin 53706
| | - K. Sridharan
- University of Wisconsin-Madison, 1500 Engineering Drive 934 Engineering Research Building, Madison, Wisconsin 53706
| | - T. Allen
- University of Wisconsin-Madison, 1500 Engineering Drive 934 Engineering Research Building, Madison, Wisconsin 53706
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O'Toole D, Hunter R, Allen T, Zekarias B, Lehmann J, Kim KS, Grab D, Corbeil LB. Effect of Histophilus somni on Heart and Brain Microvascular Endothelial Cells. Vet Pathol 2017; 54:629-639. [PMID: 28178428 DOI: 10.1177/0300985817691581] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Histophilus somni is a pathogenic gram-negative bacterium responsible for pneumonia and septicemia in cattle. Sequelae include infectious thrombotic meningoencephalitis (ITME), myocarditis, arthritis, and abortion. These syndromes are associated with widespread vasculitis and thrombosis, implicating a role for endothelium in pathogenesis. Histopathologic and immunohistochemical investigation of 10 natural cases of bovine H. somni myocarditis and 1 case of ITME revealed intravascular H. somni in large biofilm-like aggregates adherent to the luminal surface of microvascular endothelium. Ultrastructurally, bacterial communities were extracellular and closely associated with degenerating or contracted endothelial cells. Histophilus somni was identified by bacterial culture and/or immunohistochemistry. Western blots of the bacterial isolates revealed that they expressed the immunodominant protective 40 kDa OMP and immunoglobulin-binding protein A (IbpA) antigens. The latter is a large surface antigen and shed fibrillar antigen with multiple domains. The cytotoxic DR2Fic domain of IbpA was conserved as demonstrated by polymerase chain reaction. Treatment of endothelial cells in vitro with IbpA in crude culture supernatants or purified recombinant GST-IbpA DR2Fic (rDR2) cytotoxin induced retraction of cultured bovine brain microvascular endothelial cells. By contrast, no retraction of bovine endothelium was induced by mutant rDR2H/A with an inactive Fic motif or by a GST control, indicating that the cytotoxic DR2Fic motif plays an important role in endothelial cell retraction in vasculitis. The formation of biofilm-like aggregates by H. somni on bovine microvascular endothelium may be fundamental to its pathogenesis in heart and brain.
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Affiliation(s)
- D O'Toole
- 1 Wyoming State Veterinary Laboratory, University of Wyoming, Laramie, WY, USA
| | - R Hunter
- 2 Hunter Cattle Company LLC, Wheatland, WY, USA
| | - T Allen
- 1 Wyoming State Veterinary Laboratory, University of Wyoming, Laramie, WY, USA.,3 Current: Advantage Veterinary, Nampa, ID, USA
| | - B Zekarias
- 4 Department of Pathology, University of California, San Diego, CA, USA.,5 Current: Ceva-Biommune, Lenexa, KS, USA
| | - J Lehmann
- 5 Current: Ceva-Biommune, Lenexa, KS, USA.,6 Current: BioLegend San Diego, CA, USA
| | - K S Kim
- 7 School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - D Grab
- 7 School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - L B Corbeil
- 4 Department of Pathology, University of California, San Diego, CA, USA
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Tomalty HE, Hamilton EF, Hamilton A, Kukal O, Allen T, Walker VK. Kidney preservation at subzero temperatures using a novel storage solution and insect ice-binding proteins. Cryo Letters 2017; 38:100-107. [PMID: 28534053] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND Contemporary kidney preservation methods involve storing at 4 degree C up to 24 h prior to transplantation. By decreasing the storage temperature to below 0 degree C, we hypothesized that the safe storage time could be significantly lengthened. OBJECTIVE The efficacy of a proprietary CryoStasis (CrS) storage solution for the subzero preservation of kidneys was tested, with or without addition of a hyperactive insect antifreeze protein (TmAFP). MATERIALS AND METHODS Rat kidneys were stored in either University of Wisconsin (UW) solution (4 degree C, 24 h), CrS (-2 degree C, 48 h), or CrS with 61.5 µM TmAFP (-4.4 degree C, 72 h). Following storage, viability was assessed with MTT reduction assays and live vs. dead cell (FDA/PI) staining. Markers of ischemic damage were analyzed using fluormetric substrates for caspase-3 and calpain activity. RESULTS Kidneys stored in CrS for 48 h and CrS with TmAFP for 72 h displayed similar levels of enzymatic activity compared to 24 h UW controls. CONCLUSION This methodology shows promise to prolong the safe storage time of kidneys and offers the potential of increased organ availability for renal transplants.
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Affiliation(s)
- H E Tomalty
- Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - E F Hamilton
- Department of Biology, Queen's University, Kingston, Ontario, Canada
| | - A Hamilton
- Department of Surgery, Queen's University, Kingston, Ontario; CryoStasis Ltd., Westport, Ontario, Canada
| | - O Kukal
- Department of Biology, Queen's University, Kingston, Ontario; CryoStasis Ltd., Westport, Ontario, Canada
| | - T Allen
- CryoStasis Ltd., Westport, Ontario, Canada
| | - V K Walker
- Department of Biology; Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada.
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Chavez JD, Eng JK, Schweppe DK, Cilia M, Rivera K, Zhong X, Wu X, Allen T, Khurgel M, Kumar A, Lampropoulos A, Larsson M, Maity S, Morozov Y, Pathmasiri W, Perez-Neut M, Pineyro-Ruiz C, Polina E, Post S, Rider M, Tokmina-Roszyk D, Tyson K, Vieira Parrine Sant'Ana D, Bruce JE. A General Method for Targeted Quantitative Cross-Linking Mass Spectrometry. PLoS One 2016; 11:e0167547. [PMID: 27997545 PMCID: PMC5172568 DOI: 10.1371/journal.pone.0167547] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 11/16/2016] [Indexed: 01/22/2023] Open
Abstract
Chemical cross-linking mass spectrometry (XL-MS) provides protein structural information by identifying covalently linked proximal amino acid residues on protein surfaces. The information gained by this technique is complementary to other structural biology methods such as x-ray crystallography, NMR and cryo-electron microscopy[1]. The extension of traditional quantitative proteomics methods with chemical cross-linking can provide information on the structural dynamics of protein structures and protein complexes. The identification and quantitation of cross-linked peptides remains challenging for the general community, requiring specialized expertise ultimately limiting more widespread adoption of the technique. We describe a general method for targeted quantitative mass spectrometric analysis of cross-linked peptide pairs. We report the adaptation of the widely used, open source software package Skyline, for the analysis of quantitative XL-MS data as a means for data analysis and sharing of methods. We demonstrate the utility and robustness of the method with a cross-laboratory study and present data that is supported by and validates previously published data on quantified cross-linked peptide pairs. This advance provides an easy to use resource so that any lab with access to a LC-MS system capable of performing targeted quantitative analysis can quickly and accurately measure dynamic changes in protein structure and protein interactions.
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Affiliation(s)
- Juan D. Chavez
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, United States of America
| | - Jimmy K. Eng
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, United States of America
| | - Devin K. Schweppe
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, United States of America
| | - Michelle Cilia
- Boyce Thompson Institute for Plant Research, Ithaca, NY, United States of America
- USDA-Agricultural Research Service, Ithaca, NY, United States of America
- Department of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY, United States of America
| | - Keith Rivera
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States of America
| | - Xuefei Zhong
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, United States of America
| | - Xia Wu
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, United States of America
| | - Terrence Allen
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Moshe Khurgel
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Akhilesh Kumar
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Athanasios Lampropoulos
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Mårten Larsson
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Shuvadeep Maity
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Yaroslav Morozov
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Wimal Pathmasiri
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Mathew Perez-Neut
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Coriness Pineyro-Ruiz
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Elizabeth Polina
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Stephanie Post
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Mark Rider
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Dorota Tokmina-Roszyk
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | - Katherine Tyson
- Cold Spring Harbor Laboratory Proteomics Course 2016, Cold Spring Harbor, NY, United States of America
| | | | - James E. Bruce
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, United States of America
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Allen T, Murray K, Zambrana-Torrelio C, Morse S, Rondinini C, Presti VDML, Olival K, Daszak P. Global correlates of emerging zoonoses: Anthropogenic, environmental, and biodiversity risk factors. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.11.057] [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] [Indexed: 11/17/2022] Open
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Huff A, Allen T, Whiting K, Arnold B, Breit N, Miessler A. FLIRT, a web application to predict the movement of infected travelers validated against the current zika virus epidemic. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.11.245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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31
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Allen T, McClure R, Newstead SV, Lenné MG, Hillard P, Symmons M, Day L. Exposure factors of Victoria's active motorcycle fleet related to serious injury crash risk. Traffic Inj Prev 2016; 17:870-877. [PMID: 26980668 DOI: 10.1080/15389588.2016.1159304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 11/17/2015] [Accepted: 02/23/2016] [Indexed: 06/05/2023]
Abstract
OBJECTIVE The purpose of this study was to describe the nature and extent of current powered 2-wheeler (PTW) risk exposures in order to support future efforts to improve safety for this mode of transport. METHODS A cross-sectional analysis of the control arm of a population-based case-control study was conducted. The control sample was selected from 204 sites on public roads within 150 km of the city of Melbourne that were locations of recent serious injury motorcycle crashes. Traffic observations and measurements at each site were sampled for a mean of 2 h on the same type of day (weekday, Saturday, or Sunday) and within 1 h of the crash time. Photographs of passing riders during this observation period recorded data relating to characteristics of PTWs, age of riders, travel speed of PTWs and all vehicles, time gaps between vehicles, visibility, and protective clothing use. RESULTS Motorcycles and scooters represented 0.6% of all traffic (compared with 4% of all vehicle registrations). Riders were significantly more likely to have larger time gaps in front and behind when compared to other vehicles. The average travel speed of motorcycles was not significantly different than the traffic, but a significantly greater proportion were exceeding the speed limit when compared to other vehicles (6 vs. 3%, respectively). The age of registered owners of passing motorcycles was 42 years. Over half of riders were wearing dark clothing with no fluorescent or reflective surfaces. One third of motorcyclists had maximum coverage of motorcycle-specific protective clothing. CONCLUSIONS A very low prevalence of motorcyclists combined with relatively higher rates of larger time gaps to other vehicles around motorcycles may help explain their overrepresentation in injury crashes where another vehicle fails to give way. An increased risk of injury in the event of a crash exists for a small but greater proportion of motorcyclists (compared to other vehicle types) who were exceeding the speed limit. An apparent shift toward older age of the active rider population may be reducing injury crash risk relative to exposure time. There is significant scope to improve the physical conspicuity of motorcyclists and the frequency of motorcycle specific protective clothing use. These results can be used to inform policy development and monitor progress of current and future road safety initiatives.
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Affiliation(s)
- T Allen
- a Monash University Accident Research Centre , Clayton , Victoria , Australia
| | - R McClure
- b Harvard Injury Control Research Center , Harvard School of Public Health , Boston , Massachusetts
| | - S V Newstead
- a Monash University Accident Research Centre , Clayton , Victoria , Australia
| | - M G Lenné
- a Monash University Accident Research Centre , Clayton , Victoria , Australia
| | - P Hillard
- a Monash University Accident Research Centre , Clayton , Victoria , Australia
| | - M Symmons
- c Faculty of Education , Monash University , Melbourne , Victoria , Australia
| | - L Day
- d Monash Injury Research Institute, Monash University , Melbourne , Victoria , Australia
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Oberg CJ, Culumber MD, Allen T, Oberg TS, Villalba B, McMahon DJ. 0546 Characterization of Lactobacillus wasatchensis from aged cheeses showing late-gas defects. J Anim Sci 2016. [DOI: 10.2527/jam2016-0546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Bledsoe J, Aston V, Patten R, Woller S, Stevens S, Allen T, Elliott G. 5∗ Low-Risk Pulmonary Embolism (LOPE) Patients Can Be Safely Managed as Outpatients. Ann Emerg Med 2016. [DOI: 10.1016/j.annemergmed.2016.08.015] [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: 10/20/2022]
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Huff A, Allen T. Mantle: A free and multilingual software for one health biosurveillance & research. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.656] [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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Allen T, Willard VW, Anderson LM, Hardy KK, Bonner MJ. Social functioning and facial expression recognition in children with neurofibromatosis type 1. J Intellect Disabil Res 2016; 60:282-293. [PMID: 26805654 DOI: 10.1111/jir.12248] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 03/22/2015] [Revised: 09/29/2015] [Accepted: 10/28/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND This study examined social functioning and facial expression recognition (FER) in children with neurofibromatosis type 1 (NF1) compared to typically developing peers. Specifically, the current research aimed to identify hypothesised relationships between neurocognitive ability, FER and social functioning. METHOD Children, ages 8 to 16, with NF1 (n = 23) and typically developing peers (n = 23) were recruited during regularly scheduled clinic visits and through advertisements on an institutional clinical trials website, respectively. Participants completed a measure of FER, an abbreviated intelligence test and questionnaires regarding their quality of life and behavioural functioning. Parents were also asked to complete questionnaires regarding the social-emotional and cognitive functioning of their child. RESULTS As expected, there were significant differences between children with NF1 and typically developing peers across domains of social functioning and FER. Within the sample of children with NF1, there were no significant associations observed between cognitive measures, social functioning and facial recognition skills. CONCLUSION Children with NF1 exhibited high rates of social impairment and weak FER skills compared to controls. The absence of associations between FER with cognitive and social variables, however, suggests something unique about this skill in children with NF1. Theoretical comparisons are made to children with autism spectrum disorders, as this condition may serve as a potentially useful model in better understanding FER in children with NF1.
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Affiliation(s)
- T Allen
- Duke University, Psychology and Neuroscience, Durham, NC, United States
| | - V W Willard
- St. Jude Children's Research Hospital, Psychology, Memphis, TN, United States
| | - L M Anderson
- Duke University, Psychology and Neuroscience, Durham, NC, United States
| | - K K Hardy
- Children's National Medical Center, Center for Neuroscience and Behavioral Medicine, Washington, DC, United States
| | - M J Bonner
- Duke University Medical Center, Psychiatry, Durham, NC, United States
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Kubilay Z, Hopman J, Allen T, Edrees H, Allegranzi B. Skin side effects of chlorine solutions used for hand hygiene: a systematic review. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474616 DOI: 10.1186/2047-2994-4-s1-p9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Landelle C, Kubilay Z, Damani N, Allen T, Gans SL, Pittet D, Allegranzi B. Do different intraoperative glove practices reduce surgical site infections? A systematic review. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474873 DOI: 10.1186/2047-2994-4-s1-o30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Hopman J, Kubilay Z, Allen T, Edrees H, Pittet D, Allegranzi B. Efficacy of chlorine solutions used for hand hygiene and gloves disinfection in Ebola settings: a systematic review. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474896 DOI: 10.1186/2047-2994-4-s1-o13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Murillo-Williams A, Esker P, Allen T, Stone C, Frederick R. First Report of Phakopsora pachyrhizi on Soybean in Costa Rica. Plant Dis 2015; 99:418. [PMID: 30699713 DOI: 10.1094/pdis-06-14-0646-pdn] [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] [Indexed: 06/09/2023]
Abstract
Phakopsora meibomiae (Arthur) Arthur has been reported to occur in several legume species in the tropical regions of Central and South America. In Costa Rica, this pathogen was initially reported as P. pachyrhizi Sydow (1); however, to our knowledge, P. pachyrhizi has not been detected in Costa Rica. In routine evaluations of a 0.2-ha field planted with soybean (Glycine max (L.) Merr var. CIGRAS 06) in La Garita, Alajuela, Costa Rica, symptoms similar to Asian soybean rust were observed in December 2012 and January 2013. Soybean plants were at growth stages R4 to R5 when these symptoms were observed, which included yellow spots on leaves with brown spots on the abaxial surface. Further evaluations at growth stage R5 to R6 indicated that the spots had coalesced, turned grayish-brown, and caused substantial defoliation. Microscopic examination of symptomatic leaves showed the presence of uredinia and urediniospores on the lower surface of the leaf. While initial symptoms were on the southern side of the field, a substantial area of the field was infected at the second evaluation. Infected leaves were submitted to the USDA-ARS Foreign Disease-Weed Science Research Unit under the appropriate USDA-Animal Plant Health Inspection Service permit for molecular characterization and identification. Urediniospores were collected by washing infected leaves with sterile water and then pelleted by centrifugation. DNA was extracted from urediniospore pellets and excised leaf pieces using a DNeasy Plant Mini Kit (Qiagen, Germantown, MD), and eight samples were amplified in real-time polymerase chain reaction (PCR) with P. pachyrhizi-specific primers Ppm1 and Ppa2 but not with the P. meibomiae-specific primers Ppm1 and Pme2 (2). Nucleotide sequence alignment of the internal transcribed spacer (ITS) regions 1 and 2 that were amplified by PCR using the primers Ppa1 and Ppa2 further confirmed the identification as P. pachyrhizi. To the best of our knowledge, this is the first known confirmation of soybean rust, caused by P. pachyrhizi in Costa Rica. CIGRAS-06 is the only soybean variety bred in the country as well as one of the very few varieties available for growers. Given that breeding for disease resistance is not a short-term option for P. pachyrhizi, alternative disease management strategies will have to be developed. References: (1) K. R. Bromfield. Soybean Rust, Monograph No. 11. APS Press, St. Paul, MN, 1984. (2) R. D. Frederick et al. Phytopathology 92:217, 2002.
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Affiliation(s)
- A Murillo-Williams
- Centro para Investigaciones en Granos y Semillas, Universidad de Costa Rica, San Pedro Montes de Oca, Costa Rica
| | - P Esker
- Centro de Investigaciones en Protección de Cultivos, Universidad de Costa Rica, San Pedro Montes de Oca, Costa Rica
| | - T Allen
- Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi University, Stoneville, MS
| | - C Stone
- USDA-Agricultural Research Service, Foreign Disease-Weed Science Research Unit, Ft. Detrick, MD
| | - R Frederick
- USDA-Agricultural Research Service, Foreign Disease-Weed Science Research Unit, Ft. Detrick, MD
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Cooper B, Toskin I, Kulier R, Allen T, Hawkes S. Brief sexuality communication--a behavioural intervention to advance sexually transmitted infection/HIV prevention: a systematic review. BJOG 2014; 121 Suppl 5:92-103. [PMID: 25335846 DOI: 10.1111/1471-0528.12877] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/07/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND Throughout the last decade substantial research has been undertaken to develop evidence-based behaviour change interventions for sexual health promotion. Primary care could provide an opportunistic entry for brief sexual health communication. OBJECTIVES We conducted a systematic review to explore opportunistic sexual and reproductive health services for sexual health communication delivered at primary health care level. SEARCH STRATEGY We searched for studies on PubMed, ProQuest, CINAHL, Jstor, Scopus/Science Direct, Cochrane database of systematic reviews, EBSCO, CINAHL, PsychoInfo, and Web of Knowledge. Both published and unpublished articles were reviewed. SELECTION CRITERIA All randomised controlled trials and controlled clinical trials were included. Participants of all ages, from adolescence onwards were included. Brief (10-60 minutes) interventions including some aspect of communication on sexual health issues were included. DATA COLLECTION AND ANALYSIS Data were extracted by two reviewers independently using a standardised form. Interventions differed from each other, hence meta-analysis was not performed, and results are presented individually. MAIN RESULTS A total of 247 articles were selected for full-text evaluation, 31 of which were included. Sexually transmitted infections (STIs)/HIV were less often reported in the intervention group compared with the control group. Condom use was higher in most studies in the intervention group. Numbers of sexual partners and unprotected sexual intercourse were lower in the intervention groups. CONCLUSIONS There is evidence that brief counselling interventions have some effect in the reduction and prevention of STIs/HIV. Some questions could not be answered, such as the effect over time and in different settings and population groups.
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Affiliation(s)
- B Cooper
- Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
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Abstract
Increasingly, financial incentives are being used in health care as a result of increasing demand for health care coupled with fiscal pressures. Financial incentive schemes are one approach by which the system may incentivize providers of health care to improve productivity and/or adapt to better quality provision. Pay for performance (P4P) is an example of a financial incentive which seeks to link providers’ payments to some measure of performance. This paper provides a discussion of the theoretical underpinnings of P4P, gives an overview of the health P4P evidence base, and provide a detailed case study of a particularly large scheme from the English National Health Service. Lessons are then drawn from the evidence base. Overall, we find that the evidence for the effectiveness of P4P for improving quality of care in primary care is mixed. This is to some extent due to the fact that the P4P schemes used in primary care are also mixed. There are many different schemes that incentivize different aspects of care in different ways and in different settings, making evaluation problematic. The Quality and Outcomes Framework in the United Kingdom is the largest example of P4P in primary care. Evidence suggests incentivized quality initially improved following the introduction of the Quality and Outcomes Framework, but this was short-lived. If P4P in primary care is to have a long-term future, the question about scheme effectiveness (perhaps incorporating the identification and assessment of potential risk factors) needs to be answered robustly. This would require that new schemes be designed from the onset to support their evaluation: control and treatment groups, coupled with before and after data.
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Affiliation(s)
- T Allen
- Manchester Centre for Health Economics, University of Manchester, Manchester, United Kingdom
| | - T Mason
- Manchester Centre for Health Economics, University of Manchester, Manchester, United Kingdom
| | - W Whittaker
- Manchester Centre for Health Economics, University of Manchester, Manchester, United Kingdom
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Ahmadzia H, Patel E, Lian H, Thomas S, Allen T, Grotegut C, Boyd B. 137: Can the gestation-adjusted projection (GAP) method be used in obese to super morbidly obese women to predict birth weight? Am J Obstet Gynecol 2014. [DOI: 10.1016/j.ajog.2013.10.170] [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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Ahmadzia H, Lian H, Moustafa S, Dude A, Gilner J, Thomas S, Allen T, Grotegut C, Boyd B. 138: Prediction of birth weight by early versus late third trimester ultrasound in morbidly obese women. Am J Obstet Gynecol 2014. [DOI: 10.1016/j.ajog.2013.10.171] [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: 10/25/2022]
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Allen T, Garcia Iii AJ, Tang J, Ramirez JM, Rubens DD. Inner ear insult ablates the arousal response to hypoxia and hypercarbia. Neuroscience 2013; 253:283-91. [PMID: 24021919 DOI: 10.1016/j.neuroscience.2013.08.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 08/26/2013] [Accepted: 08/28/2013] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Sudden Infant Death Syndrome (SIDS) remains the leading cause of infant mortality in Western societies. A prior study identified an association between hearing suppression on the newborn hearing test and subsequent death from SIDS. This is the first finding of an abnormality in SIDS cases prior to death. A following study identified that inner ear dysfunction precipitates a marked suppression of the hypercapnic ventilatory response (HCVR). Failure of arousal has been proposed to be a key component in SIDS. The objective of the present study was to assess whether inner ear dysfunction not only weakens the hypercapnic response, but also plays a role in suppressing the arousal response to suffocating gas mixtures. METHODS Wild-type mice (n=28) received intra-tympanic gentamicin (IT-Gent) injections bilaterally or unilaterally to precipitate inner ear hair cell dysfunction. Three control groups (n=22) received intra-tympanic saline (IT-Saline) bilaterally or unilaterally (right or left), or intra-peritoneal gentamicin (IP-Gent). The body movement arousal responses to severe hypoxia-hypercarbia combined (5% CO2 in nitrogen) were tested under light anesthesia 8 days following the administration of gentamicin or saline. RESULTS After injections, the bilateral and unilateral IT-Gent-treated animals behaved similarly to controls, however the HCVR as well as the arousal movements in response to severe hypoxia-hypercarbia were suppressed in IT-Gent-treated animals compared to control animals (P<0.05). Thus the HCVR was significantly decreased in the bilateral (n=9) and unilateral IT-Gent-treated mice (n=19) compared to bilateral (n=7) and unilateral IT-Saline (n=9) control groups (p<0.05). Arousal movements were suppressed in the bilateral IT-Gent group (n=9) compared to bilateral IT-Saline controls (n=7, P<0.0001) and in the unilateral IT-Gent group (n=19) compared to unilateral IT-Saline controls (n=10, P<0.0001). DISCUSSION The findings support the theory that inner ear dysfunction could be relevant in the pathophysiology of SIDS. The inner ear appears to play a key role in arousal from suffocating gas mixtures that has not been previously identified.
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Affiliation(s)
- T Allen
- Department of Anesthesia, Seattle Children's Hospital, 4800 Sandpoint Way NE, Seattle, WA 98115, United States.
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Carr A, Kershaw T, Brown H, Allen T, Small M. Hypertensive disease in pregnancy: an examination of ethnic differences and the Hispanic paradox. J Neonatal Perinatal Med 2013; 6:11-15. [PMID: 24246453 DOI: 10.3233/npm-1356111] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE The "Hispanic paradox" refers to the epidemiological finding that Hispanics in the US have better health outcomes than the average population despite what their aggregate socioeconomic determinants would predict. The aim of this study was to evaluate obstetric outcomes for a multiethnic population with hypertensive diseases. METHODS We performed a retrospective review of parturients with hypertensive disease delivering at Duke University Medical Center. We analyzed maternal sociodemographic characteristics and ethnic differences in hypertensive disease types using Chi Square tests. RESULTS A total of 3,124 women delivered during a period of one year; 9% of them had hypertensive diseases in pregnancy. Gestational hypertension was more commonly diagnosed in Whites, whereas chronic hypertension and mild preeclampsia were more frequently encountered in Blacks and Hispanics respectively (Chi-square = 39.11, p < 0.001). The overall incidence of preeclampsia was less in Hispanics. However, severe preeclampsia rates were equal across groups. Hispanics were more likely to be uninsured and younger, enter prenatal care later, and least likely to complete high school. There was no significant difference in smoking or parity. Stratified analyses by ethnicity showed that the relationship between severe preeclampsia and comorbidities (intrauterine growth restriction, low birth weight, and need for admission to intensive care nursery) were least pronounced in Hispanics and strongest in Black women. CONCLUSION Despite similar rates of severe preeclampsia and adverse sociodemographic characteristics, Hispanic women with severe preeclampsia had better pregnancy outcomes than Black or White women with the disease.
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Affiliation(s)
- A Carr
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Duke University, Durham, NC, USA
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Smrtka M, Gunatilake R, Thompson J, Harris B, Yu M, Lan L, Allen T, Grotegut C, Brown H. 808: The impact of maternal body mass index on cesarean delivery operative times. Am J Obstet Gynecol 2013. [DOI: 10.1016/j.ajog.2012.10.146] [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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Thobakgale C, Fadda L, Lane K, Toth I, Pereyra F, Bazner S, Ndung'u T, Walker BD, Rosenberg E, Alter G, Carrington M, Allen T, Altfeld M. Frequent and strong antibody-mediated NK cell activation to HIV-1 Env in individuals with chronic HIV-1 infection. Retrovirology 2012. [PMCID: PMC3441410 DOI: 10.1186/1742-4690-9-s2-p171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Savage RM, Wiener HW, Nimgaonkar V, Devlin B, Calkins ME, Gur RE, O'Jile J, Bradford LD, Edwards N, Kwentus J, Allen T, McEvoy JP, Nasrallah H, Santos AB, Aduroja T, Lahti A, May RS, Montgomery-Barefield L, Go RCP. Heritability of functioning in families with schizophrenia in relation to neurocognition. Schizophr Res 2012; 139:105-9. [PMID: 22627125 DOI: 10.1016/j.schres.2012.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 03/28/2012] [Accepted: 04/22/2012] [Indexed: 11/28/2022]
Abstract
UNLABELLED The role of daily functioning is an integral part of the schizophrenia (SZ) phenotype and deficits in this trait appear to be present in both affected persons and some unaffected relatives; hence we have examined its heritability in our cohort of African American schizophrenia families. There is now ample evidence that deficits in cognitive function can impact family members who are not themselves diagnosed with SZ; there is some, but less evidence that role function behaves likewise. We evaluate whether role function tends to "run in families" who were ascertained because they contain an African American proband diagnosed with SZ. METHODS We analyzed heritability for selected traits related to daily function, employment, living situation, marital status, and Global Assessment Scale (GAS) score; modeling age, gender, along with neurocognition and diagnosis as covariates in a family based African-American sample (N=2488 individuals including 979 probands). RESULTS Measures of role function were heritable in models including neurocognitive domains and factor analytically derived neurocognitive summary scores and demographics as covariates; the most heritable estimate was obtained from the current GAS scores (h2=0.72). Neurocognition was not a significant contributor to heritability of role function. CONCLUSIONS Commonly assessed demographic and clinical indicators of functioning are heritable with a global rating of functioning being the most heritable. Measures of neurocognition had little impact on heritability of functioning overall. The family covariance for functioning, reflected in its heritability, supports the concept that interventions at the family level, such as evidenced-based family psychoeducation may be beneficial in schizophrenia.
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Affiliation(s)
- R M Savage
- Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL, USA.
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Brusseau ML, Carroll KC, Allen T, Baker J, Diguiseppi W, Hatton J, Morrison C, Russo A, Berkompas J. Impact of in situ chemical oxidation on contaminant mass discharge: linking source-zone and plume-scale characterizations of remediation performance. Environ Sci Technol 2011; 45:5352-8. [PMID: 21615133 PMCID: PMC3157310 DOI: 10.1021/es200716s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A large-scale permanganate-based in situ chemical oxidation (ISCO) effort has been conducted over the past ten years at a federal Superfund site in Tucson, AZ, for which trichloroethene (TCE) is the primary contaminant of concern. Remediation performance was assessed by examining the impact of treatment on contaminant mass discharge, an approach that has been used for only a very few prior ISCO projects. Contaminant mass discharge tests were conducted before and after permanganate injection to measure the impact at the source-zone scale. The results indicate that ISCO caused a significant reduction in mass discharge (approximately 75%). The standard approach of characterizing discharge at the source-zone scale was supplemented with additional characterization at the plume scale, which was evaluated by examining the change in contaminant mass discharge associated with the pump-and-treat system. The integrated contaminant mass discharge decreased by approximately 70%, consistent with the source-zone-scale measurements. The integrated mass discharge rebounded from 0.1 to 0.2 kg/d within one year after cessation of permanganate injections, after which it has been stable for several years. Collection of the integrated contaminant mass discharge data throughout the ISCO treatment period provided a high-resolution, real-time analysis of the site-wide impact of ISCO, thereby linking source-zone remediation to impacts on overall risk. The results indicate that ISCO was successful in reducing contaminant mass discharge at this site, which comprises a highly heterogeneous subsurface environment. Analysis of TCE sediment concentration data for core material collected before and after ISCO supports the hypothesis that the remaining mass discharge is associated in part with poorly accessible contaminant mass residing within lower-permeability zones.
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Affiliation(s)
- M L Brusseau
- School of Earth and Environmental Sciences, University of Arizona, Tucson, Arizona, USA.
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