1
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Syong WR, Fu JH, Kuo YH, Chu YC, Hakami M, Peng TY, Lynch J, Jariwala D, Tung V, Lu YJ. Enhanced Photogating Gain in Scalable MoS 2 Plasmonic Photodetectors via Resonant Plasmonic Metasurfaces. ACS Nano 2024. [PMID: 38315422 DOI: 10.1021/acsnano.3c10390] [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] [Indexed: 02/07/2024]
Abstract
Absorption of photons in atomically thin materials has become a challenge in the realization of ultrathin, high-performance optoelectronics. While numerous schemes have been used to enhance absorption in 2D semiconductors, such enhanced device performance in scalable monolayer photodetectors remains unattained. Here, we demonstrate wafer-scale integration of monolayer single-crystal MoS2 photodetectors with a nitride-based resonant plasmonic metasurface to achieve a high detectivity of 2.58 × 1012 Jones with a record-low dark current of 8 pA and long-term stability over 40 days. Upon comparison with control devices, we observe an overall enhancement factor of >100; this can be attributed to the local strong EM field enhanced photogating effect by the resonant plasmonic metasurface. Considering the compatibility of 2D semiconductors and hafnium nitride with the Si CMOS process and their scalability across wafer sizes, our results facilitate the smooth incorporation of 2D semiconductor-based photodetectors into the fields of imaging, sensing, and optical communication applications.
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Affiliation(s)
- Wei-Ren Syong
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Jui-Han Fu
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yu-Hsin Kuo
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Yu-Cheng Chu
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Mariam Hakami
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Tzu-Yu Peng
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Jason Lynch
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Vincent Tung
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yu-Jung Lu
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
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2
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Anantharaman SB, Lynch J, Stevens CE, Munley C, Li C, Hou J, Zhang H, Torma A, Darlington T, Coen F, Li K, Majumdar A, Schuck PJ, Mohite A, Harutyunyan H, Hendrickson JR, Jariwala D. Dynamics of self-hybridized exciton-polaritons in 2D halide perovskites. Light Sci Appl 2024; 13:1. [PMID: 38161209 PMCID: PMC10757995 DOI: 10.1038/s41377-023-01334-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 10/25/2023] [Accepted: 11/10/2023] [Indexed: 01/03/2024]
Abstract
Excitons, bound electron-hole pairs, in two-dimensional hybrid organic inorganic perovskites (2D HOIPs) are capable of forming hybrid light-matter states known as exciton-polaritons (E-Ps) when the excitonic medium is confined in an optical cavity. In the case of 2D HOIPs, they can self-hybridize into E-Ps at specific thicknesses of the HOIP crystals that form a resonant optical cavity with the excitons. However, the fundamental properties of these self-hybridized E-Ps in 2D HOIPs, including their role in ultrafast energy and/or charge transfer at interfaces, remain unclear. Here, we demonstrate that >0.5 µm thick 2D HOIP crystals on Au substrates are capable of supporting multiple-orders of self-hybridized E-P modes. These E-Ps have high Q factors (>100) and modulate the optical dispersion for the crystal to enhance sub-gap absorption and emission. Through varying excitation energy and ultrafast measurements, we also confirm energy transfer from higher energy E-Ps to lower energy E-Ps. Finally, we also demonstrate that E-Ps are capable of charge transport and transfer at interfaces. Our findings provide new insights into charge and energy transfer in E-Ps opening new opportunities towards their manipulation for polaritonic devices.
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Affiliation(s)
- Surendra B Anantharaman
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
| | - Jason Lynch
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Christopher E Stevens
- KBR Inc., Beavercreek, OH, 45431, USA
- Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, OH, 45433, USA
| | - Christopher Munley
- Department of Physics, University of Washington, Seattle, WA, 98195, USA
| | - Chentao Li
- Department of Physics, Emory University, Atlanta, GA, 30322, USA
| | - Jin Hou
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, 77005, USA
- Department of Materials Science and Nanoengineering, Rice University, Houston, TX, 77005, USA
| | - Hao Zhang
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, 77005, USA
- Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, TX, 77005, USA
| | - Andrew Torma
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, 77005, USA
- Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, TX, 77005, USA
| | - Thomas Darlington
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Francis Coen
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Kevin Li
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Arka Majumdar
- Department of Physics, University of Washington, Seattle, WA, 98195, USA
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, 98195, USA
| | - P James Schuck
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Aditya Mohite
- Department of Physics, Emory University, Atlanta, GA, 30322, USA
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, 77005, USA
| | - Hayk Harutyunyan
- Department of Physics, Emory University, Atlanta, GA, 30322, USA
| | - Joshua R Hendrickson
- Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, OH, 45433, USA
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
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3
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Abstract
Perinatal mental health is a vital component of public mental health. The perinatal period represents the time in a woman's life when she is at the highest risk of developing new-onset psychiatric disorders or relapse of an existing mental illness. Optimisation of maternal mental health in the perinatal period is associated with both short- and long-term benefits not only for the mother, but also for her infant and family. However, perinatal mental health service provision remains variable across the world. At present in Northern Ireland, 80% of women do not have access to specialist community perinatal mental health services, and without access to a mother and baby unit, mothers who require a psychiatric admission in the postnatal period are separated from their baby. However, following successful campaigns, funding for development of specialist perinatal mental health community teams has recently been approved. In this article, we discuss the importance of perinatal mental health from a public health perspective and explore challenges and opportunities in the ongoing journey of specialist service development in Northern Ireland.
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Affiliation(s)
- D Mongan
- Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - J Lynch
- Belfast Health and Social Care Trust, Belfast, Northern Ireland
| | - J Anderson
- Northern Health and Social Care Trust, Antrim, Northern Ireland
| | - L Robinson
- Independent Researcher, Northern Ireland
| | - C Mulholland
- Northern Health and Social Care Trust, Antrim, Northern Ireland
- School of Medicine, Queen's University Belfast, Belfast, Northern Ireland
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4
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Song S, Yoon A, Jang S, Lynch J, Yang J, Han J, Choe M, Jin YH, Chen CY, Cheon Y, Kwak J, Jeong C, Cheong H, Jariwala D, Lee Z, Kwon SY. Fabrication of p-type 2D single-crystalline transistor arrays with Fermi-level-tuned van der Waals semimetal electrodes. Nat Commun 2023; 14:4747. [PMID: 37550303 PMCID: PMC10406929 DOI: 10.1038/s41467-023-40448-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 07/26/2023] [Indexed: 08/09/2023] Open
Abstract
High-performance p-type two-dimensional (2D) transistors are fundamental for 2D nanoelectronics. However, the lack of a reliable method for creating high-quality, large-scale p-type 2D semiconductors and a suitable metallization process represents important challenges that need to be addressed for future developments of the field. Here, we report the fabrication of scalable p-type 2D single-crystalline 2H-MoTe2 transistor arrays with Fermi-level-tuned 1T'-phase semimetal contact electrodes. By transforming polycrystalline 1T'-MoTe2 to 2H polymorph via abnormal grain growth, we fabricated 4-inch 2H-MoTe2 wafers with ultra-large single-crystalline domains and spatially-controlled single-crystalline arrays at a low temperature (~500 °C). Furthermore, we demonstrate on-chip transistors by lithographic patterning and layer-by-layer integration of 1T' semimetals and 2H semiconductors. Work function modulation of 1T'-MoTe2 electrodes was achieved by depositing 3D metal (Au) pads, resulting in minimal contact resistance (~0.7 kΩ·μm) and near-zero Schottky barrier height (~14 meV) of the junction interface, and leading to high on-state current (~7.8 μA/μm) and on/off current ratio (~105) in the 2H-MoTe2 transistors.
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Affiliation(s)
- Seunguk Song
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, US
| | - Aram Yoon
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
| | - Sora Jang
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jason Lynch
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, US
| | - Jihoon Yang
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Juwon Han
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Myeonggi Choe
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
| | - Young Ho Jin
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Cindy Yueli Chen
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, US
| | - Yeryun Cheon
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Jinsung Kwak
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Department of Physics, Changwon National University, Changwon, 51140, Republic of Korea
| | - Changwook Jeong
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hyeonsik Cheong
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, US
| | - Zonghoon Lee
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea.
| | - Soon-Yong Kwon
- Department of Materials Science and Engineering & Graduate School of Semiconductor Materials and Devices Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
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5
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Liu B, Lynch J, Zhao H, Conran BR, McAleese C, Jariwala D, Forrest SR. Long-Range Propagation of Exciton-Polaritons in Large-Area 2D Semiconductor Monolayers. ACS Nano 2023. [PMID: 37489978 DOI: 10.1021/acsnano.3c03485] [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] [Indexed: 07/26/2023]
Abstract
Atomically thin transition metal dichalcogenides (TMDs), a subclass of two-dimensional (2D) layered materials, have numerous fascinating properties that make them a promising platform for photonic and optoelectronic devices. In particular, excited state transport by TMDs is important in energy harvesting and photonic switching; however, long-range transport in TMDs is challenging due to the lack of availability of large area films. Whereas most previous studies have focused on small, exfoliated monolayer flakes, in this work we demonstrate metal-organic chemical vapor deposition grown centimeter-scale monolayers of WS2 that support polariton propagation lengths of up to 60 μm. The polaritons form through the strong coupling of excitons with Bloch surface waves (BSWs) supported by all-dielectric photonic structures. We observe that the propagation length increases with the number of dielectric pairs due to the increased quality factor of the supporting distributed Bragg reflector. Furthermore, a longer propagation length is observed as the guided or BSW content of the polariton is increased. Our results provide a practical approach for the systematic engineering of long-range energy transport mediated by exciton-polaritons in TMD layers. Along with the accessibility of large area TMDs, our work enables applications for practical TMD-based polaritonic devices that operate at room temperature.
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Affiliation(s)
- Bin Liu
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jason Lynch
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Haonan Zhao
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ben R Conran
- AIXTRON Ltd, Swavesey, Cambridge CB24 4FQ, United Kingdom
| | | | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Stephen R Forrest
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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6
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Jo K, Marino E, Lynch J, Jiang Z, Gogotsi N, Darlington TP, Soroush M, Schuck PJ, Borys NJ, Murray CB, Jariwala D. Direct nano-imaging of light-matter interactions in nanoscale excitonic emitters. Nat Commun 2023; 14:2649. [PMID: 37156799 PMCID: PMC10167231 DOI: 10.1038/s41467-023-38189-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 04/12/2023] [Indexed: 05/10/2023] Open
Abstract
Strong light-matter interactions in localized nano-emitters placed near metallic mirrors have been widely reported via spectroscopic studies in the optical far-field. Here, we report a near-field nano-spectroscopic study of localized nanoscale emitters on a flat Au substrate. Using quasi 2-dimensional CdSe/CdxZn1-xS nanoplatelets, we observe directional propagation on the Au substrate of surface plasmon polaritons launched from the excitons of the nanoplatelets as wave-like fringe patterns in the near-field photoluminescence maps. These fringe patterns were confirmed via extensive electromagnetic wave simulations to be standing-waves formed between the tip and the edge-up assembled nano-emitters on the substrate plane. We further report that both light confinement and in-plane emission can be engineered by tuning the surrounding dielectric environment of the nanoplatelets. Our results lead to renewed understanding of in-plane, near-field electromagnetic signal transduction from the localized nano-emitters with profound implications in nano and quantum photonics as well as resonant optoelectronics.
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Affiliation(s)
- Kiyoung Jo
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Emanuele Marino
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Via Archirafi 36, 90123, Palermo, Italy
| | - Jason Lynch
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Zhiqiao Jiang
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Natalie Gogotsi
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Thomas P Darlington
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Mohammad Soroush
- Departement of Physics, Montana State University, Bozeman, MT, 59717, USA
| | - P James Schuck
- Department of Mechanical Engineering, Columbia University, New York, NY, 10027, USA
| | - Nicholas J Borys
- Departement of Physics, Montana State University, Bozeman, MT, 59717, USA
| | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA.
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7
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Del Prado A, Lynch J, Liu S, Ridoutt B, Pardo G, Mitloehner F. Animal board invited review: Opportunities and challenges in using GWP* to report the impact of ruminant livestock on global temperature change. Animal 2023; 17:100790. [PMID: 37099893 DOI: 10.1016/j.animal.2023.100790] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 03/13/2023] [Accepted: 03/21/2023] [Indexed: 03/31/2023] Open
Abstract
Ruminant livestock is a large contributor of CH4 emissions globally. Assessing how this CH4 and other greenhouse gases (GHG) from livestock contribute to anthropogenic climate change is key to understanding their role in achieving any temperature targets. The climate impacts of livestock, as well as other sectors or products/services, are generally expressed as CO2-equivalents using 100-year Global Warming Potentials (GWP100). However, the GWP100 cannot be used to translate emission pathways of short-lived climate pollutants (SLCPs) emissions to their temperature outcomes. A key limitation of handling long- and short-lived gases in the same manner is revealed in the context of any potential temperature stabilisation goals: to achieve this outcome, emissions of long-lived gases must decline to net-zero, but this is not the case for SLCPs. A recent alternative metric, GWP* (so-called 'GWP-star'), has been proposed to overcome these concerns. GWP* allows for simple appraisals of warming over time for emission series of different GHGs that may not be obvious if using pulse-emission metrics (i.e. GWP100). In this article, we explore some of the strengths and limitations of GWP* for reporting the contribution of ruminant livestock systems to global temperature change. A number of case studies are used to illustrate the potential use of the GWP* metric to, for example, understand the current contribution of different ruminant livestock production systems to global warming, appraise how different production systems or mitigations compare (having a temporal element), and seeing how possible emission pathways driven by changes in production, emissions intensity and gas composition show different impacts over time. We suggest that for some contexts, particularly if trying to directly infer contributions to additional warming, GWP* or similar approaches can provide important insight that would not be gained from conventional GWP100 reporting.
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Affiliation(s)
- A Del Prado
- Basque Centre for Climate Change (BC3), Edificio Sede N° 1, Planta 1ª, Parque Científico de UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain; Basque Foundation for Science (Ikerbasque), Bilbao, Spain.
| | - J Lynch
- Department of Physics, University of Oxford, Oxford, United Kingdom
| | - S Liu
- Department of Animal Science, University of California, Davis, CA, USA
| | - B Ridoutt
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Clayton South, Victoria, Australia; University of the Free State, Department of Agricultural Economics, Bloemfontein, South Africa
| | - G Pardo
- Basque Centre for Climate Change (BC3), Edificio Sede N° 1, Planta 1ª, Parque Científico de UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain
| | - F Mitloehner
- Department of Animal Science, University of California, Davis, CA, USA
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8
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Lynch J, Gesing P, Cruz N. International student trauma during COVID-19: Relationships among mental health, visa status, and institutional support. J Am Coll Health 2023:1-8. [PMID: 36701489 DOI: 10.1080/07448481.2023.2166350] [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: 03/16/2022] [Revised: 11/16/2022] [Accepted: 12/25/2022] [Indexed: 06/17/2023]
Abstract
Objective: This study explored the predictive relationship among international student trauma responses, visa status anxiety, and perceived institutional support. Researchers also sought to understand the relationship between help seeking behaviors and trauma exposure responses. Participants: International students (n = 172) from U.S. colleges and universities enrolled since March 2020. Methods: Data were collected via an electronic survey administered during the fall 2020 academic term. Results: The model was found to be significant, explaining 67% of the variance of student trauma responses. Anxiety surrounding students' ability to stay in the U.S. was found to be the greatest contributor to the model. Additionally, particular clusters of trauma symptomatology were significantly correlated with help seeking from specific individuals within student networks. Finally, students reported moderate levels of mental health help seeking behaviors, with friends and family being the most likely sources sought out for help. Conclusions: Despite focus on students' health and wellness concerns related to the COVID-19 pandemic, visa policy uncertainty was a primary driver of self-reported trauma symptomatology at the onset of the pandemic.
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Affiliation(s)
- Jason Lynch
- Leadership & Educational Studies, Appalachian State University, Boone, NC, USA
| | - Peggy Gesing
- Medical and Health Professions Education, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Natalie Cruz
- Office of Global Strategy and Initiatives, Emory University, Atlanta, GA, USA
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9
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Nugent K, O'Neill B, Brennan V, Lynch J, Higgins M, Dunne M, Skourou C. Quantification of organ motion in male and female patients undergoing long course radiotherapy for rectal cancer in the supine position. Adv Radiat Oncol 2022; 8:101109. [DOI: 10.1016/j.adro.2022.101109] [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] [Received: 03/12/2022] [Accepted: 10/02/2022] [Indexed: 11/07/2022] Open
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10
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Kim KH, Andreev M, Choi S, Shim J, Ahn H, Lynch J, Lee T, Lee J, Nazif KN, Kumar A, Kumar P, Choo H, Jariwala D, Saraswat KC, Park JH. High-Efficiency WSe 2 Photovoltaic Devices with Electron-Selective Contacts. ACS Nano 2022; 16:8827-8836. [PMID: 35435652 DOI: 10.1021/acsnano.1c10054] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A rapid surge in global energy consumption has led to a greater demand for renewable energy to overcome energy resource limitations and environmental problems. Recently, a number of van der Waals materials have been highlighted as efficient absorbers for very thin and highly efficient photovoltaic (PV) devices. Despite the predicted potential, achieving power conversion efficiencies (PCEs) above 5% in PV devices based on van der Waals materials has been challenging. Here, we demonstrate a vertical WSe2 PV device with a high PCE of 5.44% under one-sun AM1.5G illumination. We reveal the multifunctional nature of a tungsten oxide layer, which promotes a stronger internal electric field by overcoming limitations imposed by the Fermi-level pinning at WSe2 interfaces and acts as an electron-selective contact in combination with monolayer graphene. Together with the developed bottom contact scheme, this simple yet effective contact engineering method improves the PCE by more than five times.
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Affiliation(s)
- Kwan-Ho Kim
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Maksim Andreev
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Soodon Choi
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Jaewoo Shim
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Hogeun Ahn
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Jason Lynch
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Taeran Lee
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Jaehyeong Lee
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Koosha Nassiri Nazif
- Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States
| | - Aravindh Kumar
- Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States
| | - Pawan Kumar
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Hyongsuk Choo
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Krishna C Saraswat
- Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States
| | - Jin-Hong Park
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Korea
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11
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Jarraya M, Roemer F, Ashbeck E, Lynch J, Kwoh CK, Guermazi A. POS0177 HETEROGENOUS CARTILAGE DAMAGE SEEN ON MRI AMONG KNEES WITH KELLGREN-LAWRENCE 2 & 3 OSTEOARTHRITIS: WHAT ARE THE IMPLICATIONS FOR CLINICAL TRIALS? Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundThe most recent update of the Global Burden of Disease figures (GBD 2013) estimated that 242 million people were living in the world with symptomatic and activity-limiting OA of the hip and/or knee. Many potential disease-modifying osteoarthritis drugs (DMOADs) have been investigated, but to date no DMOADs that slow or stop disease progression have been approved by the Food and Drug Administration (FDA) or the European Medicines Agency (EMA). A potential reason for the lack of demonstrated efficacy may be reliance on radiographs for defining structural inclusion and exclusion criteria for clinical trials, such as use of joint space width and Kellgren-Lawrence (KL) grade as surrogates for cartilage damage.ObjectivesTo estimate the distribution of cartilage damage seen on knee MRI in a sample of knees with radiographic KL 2 and 3 OA that would potentially qualify for a DMOAD trial.MethodsWe selected knees from the Osteoarthritis Initiative (OAI), a longitudinal cohort study of knees with or at risk of developing symptomatic radiographic OA, that met common structural inclusion criteria for DMOAD trial enrollment at OAI baseline: knees with radiographs centrally graded as KL 2 or 3 and medial minimum joint space width (mJSW) ≥ 1.5mm. A musculoskeletal radiologist with 10 years of experience in semi-quantitative MRI assessment scored knee cartilage damage in the medial and lateral tibiofemoral and patellofemoral compartments using WORMS (Whole-Organ Magnetic Resonance Imaging Score). Coronal intermediate weighted (IW) TSE and sagittal fat-suppressed IW TSE sequences on 3T MRI were used. The WORMS cartilage scores, which are based on both the extent and depth of cartilage damage, were collapsed into 4 categories: no cartilage damage (WORMS 0 and 1), focal partial or full-thickness (PT/FT) cartilage damage (WORMS 2 and 2.5), diffuse partial thickness (PT) cartilage damage (WORMS 3 and 4), and diffuse full-thickness (FT) cartilage damage (WORMS 5 and 6). We estimated the prevalence of each category of cartilage damage in KL2 and KL3 knees; 95% confidence intervals (CI) accounted for clustering at the participant-level since some participants contributed two knees to the analysis.ResultsWe identified 2,372 participants contributing 3,446 knees with radiographic OA (KL 2 and 3) and medial mJSW ≥ 1.5mm. There were 2,318 KL2 knees and 1,128 KL3 knees. The distribution of cartilage damage in each compartment by KL grade is presented in Table 1. We found no cartilage damage in any compartments in 9.8% (95%CI: 8.5, 11.1) of KL2 knees and 2.0% (95%CI: 1.1, 2.9) of KL3 knees. Cartilage damage was absent in the medial tibiofemoral compartment in 52.4% (95%CI: 50.1, 54.6) of KL2 knees, and 14.4% (95%CI: 12.2, 16.6) of KL3 knees, versus 61% (95%CI: 58.8, 63.2) of KL2 knees and 53.6% (95%CI: 50.4, 56.7) of KL3 knees in the lateral compartment. When medial and lateral compartments were combined, cartilage damage was absent in 34.8% (95%CI: 32.7, 36.9) of the KL2 knees, and 4.3% (95%CI: 3.0, 5.5) of the KL3 knees. Diffuse FT cartilage lesions in the medial compartment were found in 6.1% (95%CI: 5.0, 7.1) of KL2 knees and 42.5% (95%CI: 39.4, 45.6) of KL3 knees.ConclusionMRI screening prior to clinical trial enrollment may identify a substantial percentage of knees with normal cartilage, as well as knees with diffuse FT cartilage lesions that may not be responsive to DMOADs, depending on the mode of action of a given pharmacological compound.Disclosure of InterestsMohamed Jarraya: None declared, Frank Roemer Shareholder of: Boston Imaging Core Lab, Consultant of: California Institute of Biomedical Research, Erin Ashbeck: None declared, John Lynch: None declared, C. Kent Kwoh Consultant of: Novartis, Regeneron, LG Chem, Kolon Tissue Gene, Avalor, Grant/research support from: Pfizer, Lilly, Cumberland, Ali Guermazi Shareholder of: Stock options in BICL, Consultant of: Pfizer, TissueGene, MerckSerono, Regeneron, Novartis, AstraZeneca
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Jameson M, Batumalai V, Woods A, Twentyman T, Sproule V, Christiansen J, Kennedy N, Marney M, Barooshian K, Plit M, Lynch J, Jagavkar R, Ormandy H, Christodouleas J, Pietzsch F, de Leon J, Foley P. PO-1064 A Registry for Analysis of Data to Advance Personalised Therapy with MR-Linac (ADAPT-MRL). Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03028-6] [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: 11/24/2022]
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13
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Owczarczyk K, Harford-Wright H, Shergill S, Sevitt T, Lynch J, Harris J, George B, Gaya A, Good J. PD-0502 Stereotactic MR guided online adaptive radiotherapy for abdominal and pelvic lymph node metastases. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02873-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Isil S, Collett J, Lynch J, Weiss-Penzias P, Rogers CM. Cloud and fog deposition: Monitoring in high elevation and coastal ecosystems. The past, present, and future. Atmos Environ (1994) 2022; 274:1-13. [PMID: 37941818 PMCID: PMC10631518 DOI: 10.1016/j.atmosenv.2022.118997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Collection methods critical load values and total nitrogen budgets for high-elevation and fog-impacted sites requires reliable cloud and fog water deposition estimates. The cost and labor intensity of cloud/fog water sample collection have made it difficult to conduct long-term studies that would provide the data needed to develop accurate estimates. Current understanding of fog formation, transport, and the role of fog and cloud deposition in hydrogeological and biogeochemical cycles is incomplete due, in part, to lack of a concerted interdisciplinary approach to the problem. Historically, these obstacles have limited interest in and collection of cloud and fog water samples. In addition to measurements of cloud/fog chemical composition, documenting fog/cloud deposition fluxes of pollutant and nutrient species requires knowledge of cloud/fog physical properties, frequency and duration of fog/cloud interception with landscapes, properties of vegetation on those landscapes, and properties of the wind that drive droplet/vegetation interactions. Because drop deposition efficiency is dependent on drop size, it is also important to consider variations in fog/cloud drop composition with drop size as species enriched in larger/ smaller drops will experience enhanced/reduced deposition rates. This paper presents summary results from a small U.S. cloud water monitoring network that operated from the mid-nineties through 2011, as well as a brief qualitative review of other cloud and fog water studies conducted in the United States (including Puerto Rico), Europe, South America/Pacific, and Asia. Current collection methods are also reviewed. Recent scientific efforts by the National Atmospheric Deposition Program's (NADP) Total Deposition Science Committee and NADP's Critical Loads of Atmospheric Deposition Science Committee have identified occult (cloud/fog) deposition as a "need" in developing critical loads for ecosystems that experience.
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Affiliation(s)
- Selma Isil
- Wood Environment & Infrastructure Solutions, Inc, 404 SW 140th Terrace, Newberry, FL 32669, USA
| | - Jeffery Collett
- Atmospheric Science Department, 1371 Campus Delivery, Colorado State University, Fort Collins, CO, 80523, USA
| | - Jason Lynch
- US Environmental Protection Agency, Office of Air and Radiation, Washington, D.C, 20004, USA
| | - Peter Weiss-Penzias
- Microbiology and Environmental Toxicology, University of California, Santa Cruz 1156 High Street, Santa Cruz, CA, 95064, USA
| | - Christopher M Rogers
- Wood Environment & Infrastructure Solutions, Inc, 6256 Greenland Road, Jacksonville, FL, 32258, USA
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Kumar P, Lynch J, Song B, Ling H, Barrera F, Kisslinger K, Zhang H, Anantharaman SB, Digani J, Zhu H, Choudhury TH, McAleese C, Wang X, Conran BR, Whear O, Motala MJ, Snure M, Muratore C, Redwing JM, Glavin NR, Stach EA, Davoyan AR, Jariwala D. Light-matter coupling in large-area van der Waals superlattices. Nat Nanotechnol 2022; 17:182-189. [PMID: 34857931 DOI: 10.1038/s41565-021-01023-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
Two-dimensional (2D) crystals have renewed opportunities in design and assembly of artificial lattices without the constraints of epitaxy. However, the lack of thickness control in exfoliated van der Waals (vdW) layers prevents realization of repeat units with high fidelity. Recent availability of uniform, wafer-scale samples permits engineering of both electronic and optical dispersions in stacks of disparate 2D layers with multiple repeating units. Here we present optical dispersion engineering in a superlattice structure comprising alternating layers of 2D excitonic chalcogenides and dielectric insulators. By carefully designing the unit cell parameters, we demonstrate greater than 90% narrow band absorption in less than 4 nm of active layer excitonic absorber medium at room temperature, concurrently with enhanced photoluminescence in square-centimetre samples. These superlattices show evidence of strong light-matter coupling and exciton-polariton formation with geometry-tuneable coupling constants. Our results demonstrate proof of concept structures with engineered optical properties and pave the way for a broad class of scalable, designer optical metamaterials from atomically thin layers.
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Affiliation(s)
- Pawan Kumar
- Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA
- Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Jason Lynch
- Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Baokun Song
- Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Haonan Ling
- Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, Los Angeles, CA, USA
| | - Francisco Barrera
- Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Kim Kisslinger
- Brookhaven National Laboratory, Center for Functional Nanomaterials, Upton, NY, USA
| | - Huiqin Zhang
- Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Jagrit Digani
- Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, Los Angeles, CA, USA
| | - Haoyue Zhu
- 2D Crystal Consortium-Materials Innovation Platform, Materials Research Institute, Pennsylvania State University, University Park, PA, USA
| | - Tanushree H Choudhury
- 2D Crystal Consortium-Materials Innovation Platform, Materials Research Institute, Pennsylvania State University, University Park, PA, USA
| | | | | | | | | | - Michael J Motala
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH, USA
| | - Michael Snure
- Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH, USA
| | - Christopher Muratore
- Department of Chemical and Materials Engineering, University of Dayton, Dayton, OH, USA
| | - Joan M Redwing
- 2D Crystal Consortium-Materials Innovation Platform, Materials Research Institute, Pennsylvania State University, University Park, PA, USA
| | - Nicholas R Glavin
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Dayton, OH, USA
| | - Eric A Stach
- Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Artur R Davoyan
- Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, Los Angeles, CA, USA.
| | - Deep Jariwala
- Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA.
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Lynch J, Scallan S, Allured B. Action learning sets to support the First Contact Practitioner role working within primary care. Physiotherapy 2021. [DOI: 10.1016/j.physio.2021.10.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Falkenbach M, Greer S, Lynch J, Gingrich J, Reeves A, Bambra C, Cylus J. The politics of ageing: how to get policymakers to support lifecourse policies. Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab164.561] [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: 11/13/2022] Open
Abstract
Abstract
Background
Given that there is not much evidence that ageing imperils the finance and provision of health care, why do so many policymakers act like it does?
Methods
We break conventional wisdom down into myths and realities, identifying the evidence against them.
Results
A first myth is that ageing produces unsustainable health care costs, which in turn, creates intergenerational conflict over public policy. A second myth is that older people behave as a single group, always pursuing policies that benefit themselves. The final myth is that decisions about policy are made by politicians who pander to that elderly block. The first reality is that most of the problems ascribed to inequality between generations (intergenerational equity) are actually problems of inequality within society as a whole that span across age groups (intragenerational equity). The second reality is that policies that address these broader inequalities are built on the life-course perspective, which focuses on identifying the policies which can make people happier and healthier at all ages by drawing on the context and circumstances under which aging occurs. The third reality is that it is possible to construct coalitions of politicians and interests that can develop and support sophisticated life-course policies that lessen the burdens of ageing and health on everybody.
Conclusions
Intergenerational inequality is not, and need not be, a significant problem for rich countries. It is substantially a product of current and past intragenerational inequality, and in fact inequality between generations often goes with inequality within generations. Intergenerational conflict is a distraction from policies that promote greater equality within and between generations, and talk of an ageing crisis is frequently just another version of longstanding arguments against public social investment from cradle to grave.
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Affiliation(s)
| | - S Greer
- University of Michigan, Ann Arbor, USA
| | - J Lynch
- University of Pennsylvania, Philadelphia, USA
| | | | - A Reeves
- University of Oxford, Oxford, UK
| | - C Bambra
- University of Newcastle, Newcastle, UK
| | - J Cylus
- London Hub, European Observatory on Health Systems and Policies, London, UK
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Cameron B, Webber K, Li H, Bennett B, Boyle F, de Souza P, Wilcken N, Lynch J, Friedlander M, Goldstein D, Lloyd A. Genetic associations of fatigue and other symptoms following breast cancer treatment: A prospective study. Brain Behav Immun Health 2021; 10:100189. [PMID: 34589724 PMCID: PMC8474532 DOI: 10.1016/j.bbih.2020.100189] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/04/2020] [Accepted: 12/06/2020] [Indexed: 12/30/2022] Open
Abstract
Background Cancer-related fatigue, mood disturbances, pain and cognitive disturbance are common after adjuvant cancer therapy, but vary considerably between individuals despite common disease features and treatment exposures. A genetic basis for this variability was explored in a prospective cohort. Methods Physical and psychological health of women were assessed prospectively following therapy for early stage breast cancer with self-report questionnaires. Participation in a genetic association sub-study was offered. Indices for the key symptom domains of fatigue, pain, depression, anxiety, and neurocognitive difficulties were empirically derived by principal components analysis from end-treatment questionnaires, and then applied longitudinally. Genetic associations were sought with functional single nucleotide polymorphisms (SNPs) in pro- and anti-inflammatory cytokine genes - tumour necrosis factor (TNF)-α (−308 GG), interferon (IFN)-ɣ (+874 TA), interleukin (IL)-10 (1082 GA and −592 CA), IL-6 (−174 GC), IL-1β (−511 GA). Results Questionnaire data was available for 210 participants, of whom 111 participated in the genetic sub-study. As expected, symptom domain scores generally improved over several months following treatment completion. Tumour and adjuvant treatment related factors were unassociated with either severity or duration of the individual symptom domains, but severity of symptoms at end-treatment was strongly associated with duration for each domain (all p < 0.05). In multivariable analyses, risk genotypes were independently associated with: fatigue with IL-6 -174 GG/GC and IL-10 -1082 GG; depression and anxiety with IL-10 -1082 AA; neurocognitive disturbance: TNF-α −308 GG; depression IL-1β (all p < 0.05). The identified SNPs also had cumulative effects in prolonging the time to recovery from the associated symptom domain. Conclusions Genetic factors contribute to the severity and duration of common symptom domains after cancer therapy. Common symptoms following breast cancer treatment can be grouped into symptom domains. Symptom domains are useful to describe patterns and trajectories of symptoms following breast cancer treatment. Cytokine gene polymorphisms are associated with the severity and duration of symptom domains following cancer treatment. The symptom severity at final treatment predicts the duration of symptoms.
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Affiliation(s)
- B. Cameron
- The Kirby Institute, UNSW, Sydney, Australia
- Corresponding author. The Kirby Institute, University of New South Wales, Sydney, Australia.
| | - K. Webber
- Prince of Wales Hospital Clinical School, Sydney, Australia
| | - H. Li
- The Kirby Institute, UNSW, Sydney, Australia
| | - B.K. Bennett
- Prince of Wales Hospital Clinical School, Sydney, Australia
| | - F. Boyle
- Patricia Ritchie Cancer Care Centre, Mater Hospital, Sydney, Australia
| | - P. de Souza
- Southside Cancer Care Centre, St George Hospital, Sydney, Australia
| | - N. Wilcken
- Westmead Hospital Cancer Care Centre, Sydney, Australia
| | - J. Lynch
- St George Hospital, Sydney, Australia
| | - M. Friedlander
- Prince of Wales Hospital Cancer Centre, Sydney, Australia
| | - D. Goldstein
- The Kirby Institute, UNSW, Sydney, Australia
- Prince of Wales Hospital Clinical School, Sydney, Australia
| | - A.R. Lloyd
- The Kirby Institute, UNSW, Sydney, Australia
- Prince of Wales Hospital Clinical School, Sydney, Australia
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Anantharaman SB, Stevens CE, Lynch J, Song B, Hou J, Zhang H, Jo K, Kumar P, Blancon JC, Mohite AD, Hendrickson JR, Jariwala D. Self-Hybridized Polaritonic Emission from Layered Perovskites. Nano Lett 2021; 21:6245-6252. [PMID: 34260259 DOI: 10.1021/acs.nanolett.1c02058] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Light-matter coupling in excitonic materials has been the subject of intense recent investigations due to emergence of new materials. Two-dimensional layered hybrid organic/inorganic perovskites (2D HOIPs) support strongly bound excitons at room temperature with some of the highest oscillator strengths and electric loss tangents among the known excitonic materials. Here, we report strong light-matter coupling in Ruddlesden-Popper phase 2D HOIP crystals without the necessity of an external cavity. We report the concurrent occurrence of multiple orders of hybrid light-matter states via both reflectance and luminescence spectroscopy in thick (>100 nm) crystals and near-unity absorption in thin (<20 nm) crystals. We observe resonances with quality factors of >250 in hybridized exciton-polaritons and identify a linear correlation between exciton-polariton mode splitting and extinction coefficient of the various 2D HOIPs. Our work opens the door to studying polariton dynamics in self-hybridized and open cavity systems with broad applications in optoelectronics and photochemistry.
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Affiliation(s)
- Surendra B Anantharaman
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Christopher E Stevens
- KBR, Inc., Beavercreek, Ohio 45431, United States
- Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio 45433, United States
| | - Jason Lynch
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Baokun Song
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jin Hou
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, United States
| | - Huiqin Zhang
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kiyoung Jo
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Pawan Kumar
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jean-Christophe Blancon
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Aditya D Mohite
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, United States
| | - Joshua R Hendrickson
- Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio 45433, United States
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Kluczkovski A, Lait R, Martins CA, Reynolds C, Smith P, Woffenden Z, Lynch J, Frankowska A, Harris F, Johnson D, Halford JCG, Cook J, Tereza da Silva J, Schmidt Rivera X, Huppert JL, Lord M, Mclaughlin J, Bridle S. Learning in lockdown: Using the COVID-19 crisis to teach children about food and climate change. NUTR BULL 2021; 46:206-215. [PMID: 33821147 PMCID: PMC8014588 DOI: 10.1111/nbu.12489] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 02/03/2021] [Accepted: 02/08/2021] [Indexed: 11/29/2022]
Abstract
Food systems are significant sources of global greenhouse gas emissions (GHGE). Since emission intensity varies greatly between different foods, changing food choices towards those with lower GHGE could make an important contribution to mitigating climate change. Public engagement events offer an opportunity to communicate these multifaceted issues and raise awareness about the climate change impact of food choices. An interdisciplinary team of researchers was preparing food and climate change educational activities for summer 2020. However, the COVID-19 pandemic and lockdown disrupted these plans. In this paper, we report on shifting these events online over the month of June 2020. We discuss what we did and the reception to our online programme. We then reflect on and highlight issues that arose. These relate to: (1) the power dynamics of children, diet and climate change; (2) mental health, diet and COVID-19; (3) engaging the wider science, agriculture and food communities; (4) the benefits of being unfunded and the homemade nature of this programme; (5) the food system, STEAM (science, technology, engineering, arts and mathematics) and diversity; and (6) how our work fits into our ongoing journey of food and climate change education.
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Affiliation(s)
| | - R. Lait
- The University of ManchesterManchesterUK
| | | | - C. Reynolds
- Centre for Food PolicyCity, University of LondonLondonUK
| | - P. Smith
- University of AberdeenAberdeenUK
| | | | | | | | - F. Harris
- Centre on Climate Change and Planetary HealthLondon School of Hygiene and Tropical MedicineLondonUK
| | - D. Johnson
- Department of Earth and Environmental SciencesThe University of ManchesterManchesterUK
| | | | - J. Cook
- The University of ManchesterManchesterUK
- Department of Environment and GeographyThe University of YorkYorkUK
| | | | - X. Schmidt Rivera
- Equitable Development and Resilience Research Group (EDR), Centre for Sustainable Energy use in Food chains (CSEF), College of Engineering, Design and Physical SciencesBrunel University LondonUxbridgeUK
| | | | - M. Lord
- Ogden Trust Regional RepManchesterUK
| | | | - S. Bridle
- The University of ManchesterManchesterUK
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Houlihan LM, Halloran PJO, Lynch J, Widdess-Walsh P, Brennan P, Javadpour M. Reversible cerebral vasoconstrictive syndrome preceded by minor head trauma. Br J Neurosurg 2020; 34:647-649. [DOI: 10.1080/02688697.2019.1672858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- L. M. Houlihan
- Departments of Neurosurgery, Neurology and Neuroradiology, Beaumont Hospital, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - P. J. O' Halloran
- Departments of Neurosurgery, Neurology and Neuroradiology, Beaumont Hospital, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - J. Lynch
- Departments of Neurosurgery, Neurology and Neuroradiology, Beaumont Hospital, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - P. Widdess-Walsh
- Departments of Neurosurgery, Neurology and Neuroradiology, Beaumont Hospital, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - P. Brennan
- Departments of Neurosurgery, Neurology and Neuroradiology, Beaumont Hospital, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - M. Javadpour
- Departments of Neurosurgery, Neurology and Neuroradiology, Beaumont Hospital, Royal College of Surgeons in Ireland, Dublin, Ireland
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Nugent K, O'Neill B, Brennan V, Lynch J, Dunne M, Skourou C. Quantification of Rectal Motion in Male and Female Patients Undergoing Long Course Radiotherapy for Rectal Cancer in the Supine Position. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1823] [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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Du M, Haag D, Lynch J, Mittinty M. Response to the Letter to the Editor: "Examining Bias and Reporting in Oral Health Prediction Modeling Studies". J Dent Res 2020; 99:1307. [PMID: 32635805 DOI: 10.1177/0022034520940275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- M Du
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
| | - D Haag
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
- Australian Research Centre for Population Oral Health, Adelaide Dental School, The University of Adelaide, Adelaide, Australia
| | - J Lynch
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
- Population Health Sciences, University of Bristol, Bristol, UK
| | - M Mittinty
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
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Jin L, Jagatheesan G, Lynch J, Guo L, Conklin DJ. Crotonaldehyde-induced vascular relaxation and toxicity: Role of endothelium and transient receptor potential ankyrin-1 (TRPA1). Toxicol Appl Pharmacol 2020; 398:115012. [PMID: 32320793 PMCID: PMC7375699 DOI: 10.1016/j.taap.2020.115012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 01/25/2023]
Abstract
INTRODUCTION Crotonaldehyde (CR) is an electrophilic α,β-unsaturated aldehyde present in foods and beverages and is a minor metabolite of 1,3-butadiene. CR is a product of incomplete combustion, and is at high levels in smoke of cigarettes and structural fires. Exposure to CR has been linked to cardiopulmonary toxicity and cardiovascular disease. OBJECTIVE The purpose of this study was to examine the direct effects of CR in murine blood vessels (aorta and superior mesenteric artery, SMA) using an in vitro system. METHODS AND RESULTS CR induced concentration-dependent (1-300 μM) relaxations (75-80%) in phenylephrine (PE) precontracted aorta and SMA. Because the SMA was 20× more sensitive to CR than aorta (SMA EC50 3.8 ± 0.5 μM; aorta EC50 76.0 ± 2.0 μM), mechanisms of CR relaxation were studied in SMA. The CR-induced relaxation at low concentrations (1-30 μM) was inhibited by: 1) mechanically-impaired endothelium; 2) Nω-Nitro-L-arginine methyl ester hydrochloride (L-NAME); 3) guanylyl cyclase (GC) inhibitor (ODQ); 4) transient receptor potential ankyrin-1 (TRPA1) antagonist (A967079); and, 5) by non-vasoactive level of nicotine (1 μM). Similarly, a TRPA1 agonist, allyl isothiocyanate (AITC; mustard oil), stimulated SMA relaxation dependent on TRPA1, endothelium, NO, and GC. Consistent with these mechanisms, TRPA1 was present in the SMA endothelium. CR, at higher concentrations (100-300 μM), induced tension oscillations (spasms) and irreversibly impaired contractility (a vasotoxic effect enhanced by impaired endothelium). CONCLUSIONS CR relaxation depends on a functional endothelium and TRPA1, whereas vasotoxicity is enhanced by endothelium dysfunction. Thus, CR is both vasoactive and vasotoxic along a concentration continuum.
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Affiliation(s)
- L Jin
- Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China; Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, USA; Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - G Jagatheesan
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - J Lynch
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, USA; Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - L Guo
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - D J Conklin
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, USA; Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA.
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Jin L, Jagatheesan G, Lynch J, Guo L, Conklin DJ. Corrigendum to "Crotonaldehyde-induced vascular relaxation and toxicity: Role of endothelium and Transient receptor potential ankyrin-1 (TRPA1)" [Toxicol Appl Pharmacol. 398 (2020) 115012]. Toxicol Appl Pharmacol 2020; 401:115114. [PMID: 32598891 DOI: 10.1016/j.taap.2020.115114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L Jin
- Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China; Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, USA; Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - G Jagatheesan
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - J Lynch
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, USA; Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - L Guo
- Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA
| | - D J Conklin
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, USA; Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, USA; Diabetes and Obesity Center, University of Louisville, Louisville, KY, USA; American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, USA.
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Thomas IA, Buckley C, Kelly E, Dillon E, Lynch J, Moran B, Hennessy T, Murphy PNC. Establishing nationally representative benchmarks of farm-gate nitrogen and phosphorus balances and use efficiencies on Irish farms to encourage improvements. Sci Total Environ 2020; 720:137245. [PMID: 32325548 DOI: 10.1016/j.scitotenv.2020.137245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 01/07/2020] [Accepted: 02/09/2020] [Indexed: 06/11/2023]
Abstract
Agriculture faces considerable challenges of achieving more sustainable production that minimises nitrogen (N) and phosphorus (P) losses and meets international obligations for water quality and greenhouse gas emissions. This must involve reducing nutrient balance (NB) surpluses and increasing nutrient use efficiencies (NUEs), which could also improve farm profitability (a win-win). To set targets and motivate improvements in Ireland, nationally representative benchmarks were established for different farm categories (sector, soil group and production intensity). Annual farm-gate NBs (kg ha-1) and NUEs (%) for N and P were calculated for 1446 nationally representative farms from 2008 to 2015 using import and export data collected by the Teagasc National Farm Survey (part of the EU Farm Accountancy Data Network). Benchmarks for each category were established using quantile regression analysis and percentile rankings to identify farms with the lowest NB surplus per production intensity and highest gross margins (€ ha-1). Within all categories, large ranges in NBs and NUEs between benchmark farms and poorer performers show considerable room for nutrient management improvements. Results show that as agriculture intensifies, nutrient surpluses, use efficiencies and gross margins increase, but benchmark farms minimise surpluses to relatively low levels (i.e. are more sustainable). This is due to, per ha, lower fertiliser and feed imports, greater exports of agricultural products, and for dairy, sheep and suckler cattle, relatively high stocking rates. For the ambitious scenario of all non-benchmark farms reaching the optimal benchmark zone, moderate reductions in farm nutrient surpluses were found with great improvements in profitability, leading to a 31% and 9% decrease in N and P surplus nationally, predominantly from dairy and non-suckler cattle. The study also identifies excessive surpluses for each level of production intensity, which could be used by policy in setting upper limits to improve sustainability.
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Affiliation(s)
- I A Thomas
- Environment and Sustainable Resource Management Section, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, Ireland.
| | - C Buckley
- Agricultural Economics and Farm Surveys Department, Rural Economy & Development Centre, Teagasc, Mellows Campus, Athenry, Ireland.
| | - E Kelly
- Agricultural and Food Economics, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, Ireland.
| | - E Dillon
- Agricultural Economics and Farm Surveys Department, Rural Economy & Development Centre, Teagasc, Mellows Campus, Athenry, Ireland.
| | - J Lynch
- Department of Physics, University of Oxford, Oxford, UK.
| | - B Moran
- Agricultural Economics and Farm Surveys Department, Rural Economy & Development Centre, Teagasc, Mellows Campus, Athenry, Ireland.
| | - T Hennessy
- Food Business and Development, Business School, University College Cork, College Road, Cork, Ireland.
| | - P N C Murphy
- Environment and Sustainable Resource Management Section, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin, Ireland; UCD Earth Institute, University College Dublin, Belfield, Dublin, Ireland.
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Van Name MA, Cheng P, Gal RL, Kollman C, Lynch J, Nelson B, Tamborlane WV. Children and adolescents with type 1 and type 2 diabetes mellitus in the Pediatric Diabetes Consortium Registries: comparing clinical characteristics and glycaemic control. Diabet Med 2020; 37:863-867. [PMID: 31943374 DOI: 10.1111/dme.14233] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/09/2020] [Indexed: 01/10/2023]
Abstract
AIM To compare the characteristics of children and adolescents with type 1 vs. type 2 diabetes in the Pediatric Diabetes Consortium (PDC) registries. METHODS Participants were 10 to < 21 years of age at diagnosis; there were 484 with type 1 diabetes and 1236 with type 2 diabetes. RESULTS Children and adolescents with type 2 diabetes were more likely to be female, overweight/obese, and from low-income, minority ethnic families. Children and adolescents with type 1 diabetes were more likely to present with diabetic ketoacidosis and have higher mean HbA1c levels at diagnosis. More than 70% in both cohorts achieved target HbA1c levels < 58 mmol/mol (< 7.5%) within 6 months, but fewer participants with type 1 than type 2 diabetes were able to maintain target HbA1c levels after 6 months consistently throughout 3 years post diagnosis. Of the 401 participants with type 2 diabetes with ≥ 24 months diabetes duration on enrolment in the registry, 47% required no insulin treatment. Median C-peptide levels were 1.43 mmol/l in the subset of participants with type 2 diabetes in whom it was measured, but only 0.06 mmol/l in the subset with type 1 diabetes. CONCLUSIONS Although families of children and adolescents with type 2 diabetes face greater socio-economic obstacles and risk factors for poor diabetes outcomes, the greater retention of residual endogenous insulin secretion likely contributes to the increased ability of children and adolescents with type 2 diabetes to maintain target HbA1c during the first 3 years of diabetes diagnosis.
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Affiliation(s)
- M A Van Name
- Pediatric Endocrinology, Yale University, New Haven, CT, USA
| | - P Cheng
- Jaeb Center for Health Research, Tampa, FL, USA
| | - R L Gal
- Jaeb Center for Health Research, Tampa, FL, USA
| | - C Kollman
- Jaeb Center for Health Research, Tampa, FL, USA
| | - J Lynch
- University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - B Nelson
- School of Medicine-Greenville, University of South Carolina, Greenville, SC, USA
| | - W V Tamborlane
- Pediatric Endocrinology, Yale University, New Haven, CT, USA
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Neogi T, Lynch J, Jarraya M, Felson D, Wang N, Lewis C, Torner J, Nevitt M, Guermazi A. Intra-articular mineralization on knee CT increases risk of knee pain in the most study. Osteoarthritis Cartilage 2020. [DOI: 10.1016/j.joca.2020.02.424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Abstract
Recent efforts to improve the reliability and efficiency of scientific research have caught the attention of researchers conducting prediction modeling studies (PMSs). Use of prediction models in oral health has become more common over the past decades for predicting the risk of diseases and treatment outcomes. Risk of bias and insufficient reporting present challenges to the reproducibility and implementation of these models. A recent tool for bias assessment and a reporting guideline—PROBAST (Prediction Model Risk of Bias Assessment Tool) and TRIPOD (Transparent Reporting of a Multivariable Prediction Model for Individual Prognosis or Diagnosis)—have been proposed to guide researchers in the development and reporting of PMSs, but their application has been limited. Following the standards proposed in these tools and a systematic review approach, a literature search was carried out in PubMed to identify oral health PMSs published in dental, epidemiologic, and biostatistical journals. Risk of bias and transparency of reporting were assessed with PROBAST and TRIPOD. Among 2,881 papers identified, 34 studies containing 58 models were included. The most investigated outcomes were periodontal diseases (42%) and oral cancers (30%). Seventy-five percent of the studies were susceptible to at least 4 of 20 sources of bias, including measurement error in predictors ( n = 12) and/or outcome ( n = 7), omitting samples with missing data ( n = 10), selecting variables based on univariate analyses ( n = 9), overfitting ( n = 13), and lack of model performance assessment ( n = 24). Based on TRIPOD, at least 5 of 31 items were inadequately reported in 95% of the studies. These items included sampling approaches ( n = 15), participant eligibility criteria ( n = 6), and model-building procedures ( n = 16). There was a general lack of transparent reporting and identification of bias across the studies. Application of the recommendations proposed in PROBAST and TRIPOD can benefit future research and improve the reproducibility and applicability of prediction models in oral health.
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Affiliation(s)
- M. Du
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
| | - D. Haag
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
| | - Y. Song
- Australian Research Centre for Population Oral Health, Adelaide Dental School, The University of Adelaide, Adelaide, Australia
| | - J. Lynch
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
- Population Health Sciences, University of Bristol, Bristol, UK
| | - M. Mittinty
- School of Public Health, The University of Adelaide, Adelaide, Australia
- Robinson Research Institute, The University of Adelaide, Adelaide, Australia
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Begum M, Pilkington R, Chittleborough C, Lynch J, Penno M, Smithers L. Caesarean section and risk of type 1 diabetes: whole-of-population study. Diabet Med 2019; 36:1686-1693. [PMID: 31498920 DOI: 10.1111/dme.14131] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/05/2019] [Indexed: 12/19/2022]
Abstract
AIM A hypothesized mechanism for increased type 1 diabetes risk among caesarean births is lack of exposure to the vaginal microbiota. Children born by prelabour caesarean are not exposed to the vaginal microbiota, whereas caesarean births during labour (intrapartum) may be exposed. The aim of this study was to estimate type 1 diabetes risk among children born by caesarean compared with normal vaginal delivery. METHODS This whole-of-population study linked routinely collected, de-identified administrative data from the South Australian Early Childhood Data Project for all births from 1999 to 2013. Type 1 diabetes cases were identified using inpatient hospitalizations from 2001 to 2014 (ICD-10-AM codes E10-E109). Type 1 diabetes risk for caesarean was assessed by Cox regression using two models: (i) caesarean vs. vaginal and (ii) prelabour or intrapartum caesarean vs. vaginal. Analyses were adjusted for confounding and multiple imputation was used to address missing data. RESULTS A total of 286 058 children born between 1999 and 2013 contributed to 2 200 252 person-years, of which 557 had type 1 diabetes. Of all births, 90 546 (31.7%) were caesarean, and of these 53.1% were prelabour and 46.9% intrapartum caesarean. Compared with vaginal delivery, the adjusted hazard ratio for type 1 diabetes was 1.05 [95% confidence interval (CI) 0.86-1.28) for caesarean, 1.02 (95% CI 0.79-1.32) for prelabour caesarean and 1.08 (95% CI 0.82-1.41) for intrapartum caesarean. CONCLUSION There may be a small increased type 1 diabetes risk following caesarean, but confidence intervals included the null. The lower estimate for prelabour compared with intrapartum caesarean, and the potential for unmeasured confounding suggest that neonatal vaginal microbiota might not be involved in type 1 diabetes.
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Affiliation(s)
- M Begum
- School of Public Health, Adelaide, Australia
- Robinson Research Institute, Adelaide, Australia
| | - R Pilkington
- School of Public Health, Adelaide, Australia
- Robinson Research Institute, Adelaide, Australia
| | - C Chittleborough
- School of Public Health, Adelaide, Australia
- Robinson Research Institute, Adelaide, Australia
| | - J Lynch
- School of Public Health, Adelaide, Australia
- Robinson Research Institute, Adelaide, Australia
- Bristol Medical School, Population Health Sciences, University of Bristol, Bristol, UK
| | - M Penno
- Robinson Research Institute, Adelaide, Australia
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - L Smithers
- School of Public Health, Adelaide, Australia
- Robinson Research Institute, Adelaide, Australia
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Atasoy D, Kandasamy N, Hart J, Lynch J, Yang SH, Walsh D, Tolias C, Booth TC. Outcome Study of the Pipeline Embolization Device with Shield Technology in Unruptured Aneurysms (PEDSU). AJNR Am J Neuroradiol 2019; 40:2094-2101. [PMID: 31727754 DOI: 10.3174/ajnr.a6314] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 09/20/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The recently introduced Pipeline Flex Embolization Device with Shield Technology (Pipeline Shield) is the third generation of Pipeline flow-diverter devices. It has a new stent-surface modification, which reduces thrombogenicity. We aimed to evaluate clinical and radiographic (safety and efficacy) outcomes of the Pipeline Shield. MATERIALS AND METHODS The 30-day and 1-year mortality and morbidity rates and the 6- and 18-month radiographic aneurysm occlusion outcomes for procedures performed between March 2016 and January 2018 were analyzed. 3D-TOF-MRA was used for follow-up. RESULTS Forty-four attempted Pipeline Shield procedures were performed for 41 patients with 44 target aneurysms (total of 52 aneurysms treated). A total of 88.5% of devices were inserted in the anterior circulation, and 11.5%, in the posterior circulation; 49/52 (94.2%) aneurysms were saccular; and 1/52 (1.9%) was fusiform. One (1.9%) aneurysm was an iatrogenic pseudoaneurysm, and 1 (1.9%) was a dissecting aneurysm. Seventy-one percent (35/49) of the saccular aneurysms were wide-neck (neck, >4 mm), 34.6% (18/52) were large (≥10 mm), and 3.8% (2/52) were giant (≥25 mm). The mean aneurysm sac maximal diameter was 9.0 mm, and the mean neck width was 5.0 mm. The cumulative mortality and morbidity rates were 2.3% and 6.8% at 1 year, respectively. The adequate occlusion rate was 78.8% at 6 months and 90.3% at 18 months. CONCLUSIONS In this pragmatic and non-industry-sponsored study, the occlusion rates and safety outcomes were similar to those seen in previously published studies with flow-diverter devices and earlier generation Pipeline Embolization Devices.
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Affiliation(s)
- D Atasoy
- From Karadeniz Technical University (D.A.), Farabi Hospital, Trabzon, Turkey
| | - N Kandasamy
- Departments of Neuroradiology (N.K., J.H., J.L., T.C.B.)
| | - J Hart
- Departments of Neuroradiology (N.K., J.H., J.L., T.C.B.)
| | - J Lynch
- Departments of Neuroradiology (N.K., J.H., J.L., T.C.B.)
| | - S-H Yang
- Department of Radiology (S.-H.Y.), Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Radiology (S.-H.Y.), School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - D Walsh
- Neurosurgery (D.W., C.T.), King's College Hospital National Health Service Foundation Trust, London, UK
| | - C Tolias
- Neurosurgery (D.W., C.T.), King's College Hospital National Health Service Foundation Trust, London, UK
| | - T C Booth
- Departments of Neuroradiology (N.K., J.H., J.L., T.C.B.) .,School of Biomedical Engineering and Imaging Sciences (T.C.B.), King's College London, London, UK
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Lynch J. Busting the myth of the ‘greedy elderly’. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz185.691] [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 politics of ageing are both personal, involving judgements about specific family members as well as broad social groups. This chapter evaluates the argument that governments implement packages of policies that are favorable to the elderly, but that are societally sub-optimal, because of political pressure from the elderly. It begins by laying out the core premises of the “greedy geezer” narrative: because pension transfers, high-cost medical care, and policies that protect transferable assets like housing are highly salient to the elderly and their advocates, intense preferences for these types of policies communicated to politicians and policy-makers will eventually crowd out other, more societally-optimal policies.
Methods
Looking at public opinion data on ageing, intergenerational transfers, and the welfare state this chapter wants to understand both how different publics understand and frame ageing and health as well as what priorities these publics identify, and why?
Results
The elderly and their organized representatives (e.g. pensioner parties, pensioner unions, and advocacy groups) in some contexts do push for policies that are “greedy” in the sense of being beneficial for the elderly or their own children, but not for society as a whole. However, this phenomenon is far from universal: It is especially pronounced in the US and the UK, but much less so in other national contexts. Moreover, the policy packages adopted by national governments are generally motivated by concerns other than appeasing the elderly.
Conclusions
Characterizing the elderly as uniformly “greedy” obscures the fact that inequality among the elderly means that many need more support than they actually receive.
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Affiliation(s)
- J Lynch
- Department of Political Science, University of Pennsylvania, Philadelphia, USA
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Ng FK, Wallace S, Coe B, Owen A, Lynch J, Bonvento B, Firn M, McGrath BA. From smartphone to bed-side: exploring the use of social media to disseminate recommendations from the National Tracheostomy Safety Project to front-line clinical staff. Anaesthesia 2019; 75:227-233. [PMID: 31250430 DOI: 10.1111/anae.14747] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2019] [Indexed: 11/27/2022]
Abstract
Traditional methods used to disseminate educational resources to front-line healthcare staff have several limitations. Social media may increase the visibility of these resources among targeted groups and communities. Our project aimed to disseminate key clinical messages from the National Tracheostomy Safety Project to those caring for patients with tracheostomies or laryngectomies. We commissioned an external media company to design educational material and devise a marketing strategy. We developed videos to communicate recommendations from the safety project and used Facebook, Twitter, YouTube and LinkedIn to deliver these to our target users. We recorded 629,270 impressions over a paid 12-week campaign. Our YouTube channel registered more than a five-fold increase in views and watch time during the campaign as compared with the previous year. Around two-thirds of views across all platforms were from peer-to-peer sharing. We spent £4140 on social media advertising, with each view and click costing £0.02 and £0.67, respectively. This intelligence-led approach using social media is an effective and efficient method to disseminate knowledge on the principles of safe tracheostomy care to front-line clinical staff. Similar strategies may be effective for other patient safety topics, especially when targeting groups that do not use medical journals or other traditional means of dissemination.
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Affiliation(s)
- F K Ng
- Burns Intensive Care Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - S Wallace
- Burns Intensive Care Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - B Coe
- Burns Intensive Care Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - A Owen
- Acute Intensive Care Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - J Lynch
- Manchester University NHS Foundation Trust, Manchester, UK
| | - B Bonvento
- Manchester University NHS Foundation Trust, Manchester, UK
| | - M Firn
- South West London and St George's Mental Health NHS Trust, London, UK
| | - B A McGrath
- Manchester University NHS Foundation Trust, Manchester, UK.,Manchester Academic Critical Care, Division of Infection, Immunity & Respiratory Medicine, Faculty of Biology, Medicine & Health, The University of Manchester, UK
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Aghdam N, Katarian S, Danner M, Ayoob M, Yung T, Lei S, Kumar D, Collins B, Lischalk J, Dritschilo A, Suy S, Lynch J, Collins S. PO-0852 Stereotactic Body Radiation Therapy for Unfavorable Prostate Cancer: Large institutional experience. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31272-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Amos HM, Miniat CF, Lynch J, Compton J, Templer PH, Sprague LA, Shaw D, Burns D, Rea A, Whitall D, Myles L, Gay D, Nilles M, Walker J, Rose AK, Bales J, Deacon J, Pouyat R. What Goes Up Must Come Down: Integrating Air and Water Quality Monitoring for Nutrients. Environ Sci Technol 2018; 52:11441-11448. [PMID: 30230820 DOI: 10.1021/acs.est.8b03504] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Excess nitrogen and phosphorus ("nutrients") loadings continue to affect ecosystem function and human health across the U.S. Our ability to connect atmospheric inputs of nutrients to aquatic end points remains limited due to uncoupled air and water quality monitoring. Where connections exist, the information provides insights about source apportionment, trends, risk to sensitive ecosystems, and efficacy of pollution reduction efforts. We examine several issues driving the need for better integrated monitoring, including: coastal eutrophication, urban hotspots of deposition, a shift from oxidized to reduced nitrogen deposition, and the disappearance of pristine lakes. Successful coordination requires consistent data reporting; collocating deposition and water quality monitoring; improving phosphorus deposition measurements; and filling coverage gaps in urban corridors, agricultural areas, undeveloped watersheds, and coastal zones.
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Affiliation(s)
- Helen M Amos
- AAAS Science and Technology Policy Fellow hosted by U.S. Environmental Protection Agency , Washington , DC 20004 , United States
| | - Chelcy F Miniat
- U.S. Department of Agriculture , Office of the Chief Scientist , Washington , DC 20250 , United States
| | - Jason Lynch
- U.S. Environmental Protection Agency , Office of Air and Radiation , Washington , DC 20004 , United States
| | - Jana Compton
- U.S. Environmental Protection Agency , Western Ecology Division , Corvallis , Oregon 97333 , United States
| | - Pamela H Templer
- Boston University , Department of Biology , Boston , Massachusetts 02215 , United States
| | - Lori A Sprague
- U.S. Geological Survey, National Water Quality Program , Denver , Colorado 80225 , United States
| | - Denice Shaw
- U.S. Environmental Protection Agency , Office of Research and Development , Washington , DC 20004 , United States
| | - Doug Burns
- U.S. Geological Survey, New York Water Science Center , Troy , New York 12309 , United States
| | - Anne Rea
- U.S. Environmental Protection Agency , Office of Research and Development , Research Triangle Park , North Carolina 27711 , United States
| | - David Whitall
- National Oceanic and Atmospheric Administration, National Ocean Service , Silver Spring , Maryland 20910 , United States
| | - LaToya Myles
- National Oceanic and Atmospheric Administration, Air Resources Laboratory , Oak Ridge , Tennessee 37830 , United States
| | - David Gay
- National Atmospheric Deposition Program, Wisconsin State Laboratory of Hygiene , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Mark Nilles
- U.S. Geological Survey, National Water Quality Program , Lakewood , Colorado 80225 , United States
| | - John Walker
- U.S. Environmental Protection Agency , Office of Research and Development , Research Triangle Park , North Carolina 27711 , United States
| | - Anita K Rose
- U.S. Department of Agriculture Forest Service , Air Resource Management , Washington , DC 20250 , United States
| | - Jerad Bales
- Consortium of Universities for the Advancement Hydrologic Science, Inc. , Cambridge , Massachusetts 02140 , United States
| | - Jeffrey Deacon
- U.S. Geological Survey, National Water Quality Program , Pembroke , New Hampshire 03275 , United States
| | - Richard Pouyat
- U.S. Department of Agriculture Forest Service , Research and Development , Washington , DC 20250 , United States
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Wang K, Ding C, Hannon MJ, Chen Z, Kwoh CK, Lynch J, Hunter DJ. Signal intensity alteration within infrapatellar fat pad predicts knee replacement within 5 years: data from the Osteoarthritis Initiative. Osteoarthritis Cartilage 2018; 26:1345-1350. [PMID: 29842941 DOI: 10.1016/j.joca.2018.05.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 05/08/2018] [Accepted: 05/20/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate whether infrapatellar fat pad (IPFP) signal intensity (SI) alteration predicts the occurrence of knee replacement (KR) in knee osteoarthritis (OA) patients over 5 years. DESIGN The subjects were selected from Osteoarthritis Initiative (OAI) study. Case knees (n = 127) were defined as those who received KR during 5 years follow-up visit. They were matched by gender, age and radiographic status with control knees (n = 127). We used T2-weighted MR images to measure IPFP SI alteration using a newly developed algorithm in MATLAB. The measurements were assessed at baseline (BL), T0 (the visit just before KR) and 1 year before T0 (T-1). Conditional logistic regression was used to analyse the associations between IPFP SI alterations and the risk of KR. RESULTS Participants were mostly female (57%), with an average age of 63.7 years old and a mean body mass index (BMI) of 29.5 kg/m2. In multivariable analysis, the standard deviation (SD) of IPFP SI [sDev (IPFP)] and the ratio of high SI region volume to whole IPFP volume [Percentage (H)] measured at BL were significantly associated with increased risks of KR after adjustment for covariates. IPFP SI alterations measured at T-1 including sDev (IPFP), Percentage (H) and clustering effect of high SI [Clustering factor (H)] were significantly associated with higher risks of KR. All measurements were significantly associated with higher risks of KR at T0. CONCLUSIONS IPFP SI is associated with the occurrence of KR suggesting it may play a role in end-stage knee OA.
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Affiliation(s)
- K Wang
- Arthritis Research Institute, Department of Rheumatology, 1st Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - C Ding
- Arthritis Research Institute, Department of Rheumatology, 1st Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Department of Rheumatology, Royal North Shore Hospital and Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Australia; Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia; Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - M J Hannon
- Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Z Chen
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia; School of Mathematics and Information Science, Nanjing Normal University of Special Education, China
| | - C K Kwoh
- University of Arizona Arthritis Center, Division of Rheumatology, University of Arizona College of Medicine, Tucson, AZ, USA
| | - J Lynch
- Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, CA, USA
| | - D J Hunter
- Department of Rheumatology, Royal North Shore Hospital and Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Australia
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Farmer S, Lynch J, McCaffrey R. C - 43Analysis of Five Empirically-Derived Methods of Utilizing the Test of Memory Malingering (TOMM) Relative to Three Other Performance Validity Measures. Arch Clin Neuropsychol 2018. [DOI: 10.1093/arclin/acy061.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Trunnel S, Transue D, Surhigh J, Bezzaire D, Moltz K, Zacharski E, Henske J, Desai S, Frizelis K, Khan F, Sjoberg R, Allen K, Manning P, Hendry G, Taylor B, Jones S, Couch R, Danchak R, Lieberman D, Strader W, Bencomo M, Bailey T, Bedolla L, Roldan C, Moudiotis C, Vaidya B, Anning C, Bunce S, Estcourt S, Folland E, Gordon E, Harrill C, Ireland J, Piper J, Scaife L, Sutton K, Wilkins S, Costelloe M, Palmer J, Casas L, Miller C, Burgard M, Erickson C, Hallanger-Johnson J, Clark P, Taylor W, Galgani J, Banerjee S, Banda C, McEowen D, Kinman R, Lafferty A, Gillett S, Nolan C, Pathak M, Sondrol L, Hjelle T, Hafner S, Kotrba J, Hendrickson R, Cemeroglu A, Symington T, Daniel M, Appiagyei-Dankah Y, Postellon D, Racine M, Kleis L, Barnes K, Godwin S, McCullough H, Shaheen K, Buck G, Noel L, Warren M, Weber S, Parker S, Gillespie I, Nelson B, Frost C, Amrhein J, Moreland E, Hayes A, Peggram J, Aisenberg J, Riordan M, Zasa J, Cummings E, Scott K, Pinto T, Mokashi A, McAssey K, Helden E, Hammond P, Dinning L, Rahman S, Ray S, Dimicri C, Guppy S, Nielsen H, Vogel C, Ariza C, Morales L, Chang Y, Gabbay R, Ambrocio L, Manley L, Nemery R, Charlton W, Smith P, Kerr L, Steindel-Kopp B, Alamaguer M, Tabisola-Nuesca E, Pendersen A, Larson N, Cooper-Olviver H, Chan D, Fitz-Patrick D, Carreira T, Park Y, Ruhaak R, Liljenquist D. A Type 1 Diabetes Genetic Risk Score Predicts Progression of Islet Autoimmunity and Development of Type 1 Diabetes in Individuals at Risk. Diabetes Care 2018; 41:1887-1894. [PMID: 30002199 PMCID: PMC6105323 DOI: 10.2337/dc18-0087] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 06/06/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We tested the ability of a type 1 diabetes (T1D) genetic risk score (GRS) to predict progression of islet autoimmunity and T1D in at-risk individuals. RESEARCH DESIGN AND METHODS We studied the 1,244 TrialNet Pathway to Prevention study participants (T1D patients' relatives without diabetes and with one or more positive autoantibodies) who were genotyped with Illumina ImmunoChip (median [range] age at initial autoantibody determination 11.1 years [1.2-51.8], 48% male, 80.5% non-Hispanic white, median follow-up 5.4 years). Of 291 participants with a single positive autoantibody at screening, 157 converted to multiple autoantibody positivity and 55 developed diabetes. Of 953 participants with multiple positive autoantibodies at screening, 419 developed diabetes. We calculated the T1D GRS from 30 T1D-associated single nucleotide polymorphisms. We used multivariable Cox regression models, time-dependent receiver operating characteristic curves, and area under the curve (AUC) measures to evaluate prognostic utility of T1D GRS, age, sex, Diabetes Prevention Trial-Type 1 (DPT-1) Risk Score, positive autoantibody number or type, HLA DR3/DR4-DQ8 status, and race/ethnicity. We used recursive partitioning analyses to identify cut points in continuous variables. RESULTS Higher T1D GRS significantly increased the rate of progression to T1D adjusting for DPT-1 Risk Score, age, number of positive autoantibodies, sex, and ethnicity (hazard ratio [HR] 1.29 for a 0.05 increase, 95% CI 1.06-1.6; P = 0.011). Progression to T1D was best predicted by a combined model with GRS, number of positive autoantibodies, DPT-1 Risk Score, and age (7-year time-integrated AUC = 0.79, 5-year AUC = 0.73). Higher GRS was significantly associated with increased progression rate from single to multiple positive autoantibodies after adjusting for age, autoantibody type, ethnicity, and sex (HR 2.27 for GRS >0.295, 95% CI 1.47-3.51; P = 0.0002). CONCLUSIONS The T1D GRS independently predicts progression to T1D and improves prediction along T1D stages in autoantibody-positive relatives.
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Affiliation(s)
- Maria J. Redondo
- Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
| | | | - Andrea K. Steck
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Seth Sharp
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | - John M. Wentworth
- Walter and Eliza Hall Institute of Medical Research and Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Michael N. Weedon
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | | | | | | | | | - Richard A. Oram
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
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Dawson R, Walace S, Coe B, Bonvento B, Owen A, Lynch J, McGrath B. Better tracheostomy care through targeted education using social media. Br J Anaesth 2018. [DOI: 10.1016/j.bja.2018.05.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Donlon EA, O’Connell K, Varini R, Khan MG, Lynch J. The Light at the End of the Tunnel: A Case of Dysautonomia Associated With Melkersson-Rosenthal Syndrome. Ir Med J 2018; 111:779. [PMID: 30520282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- E A Donlon
- Department of Neurology, Galway University Hospital, Galway, Ireland
| | - K O’Connell
- Department of Neurology, Galway University Hospital, Galway, Ireland
| | - R Varini
- Department of Neurology, Galway University Hospital, Galway, Ireland
| | - M G Khan
- Department of Neurology, Galway University Hospital, Galway, Ireland
- Department of Medicine, National University of Ireland, Galway
| | - J Lynch
- Department of Neurology, Galway University Hospital, Galway, Ireland
- Department of Medicine, National University of Ireland, Galway
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Tang WW, McGee P, Lachin JM, Li DY, Hoogwerf B, Hazen SL, Nathan D, Zinman B, Crofford O, Genuth S, Brown‐Friday J, Crandall J, Engel H, Engel S, Martinez H, Phillips M, Reid M, Shamoon H, Sheindlin J, Gubitosi‐Klug R, Mayer L, Pendegast S, Zegarra H, Miller D, Singerman L, Smith‐Brewer S, Novak M, Quin J, Genuth S, Palmert M, Brown E, McConnell J, Pugsley P, Crawford P, Dahms W, Gregory N, Lackaye M, Kiss S, Chan R, Orlin A, Rubin M, Brillon D, Reppucci V, Lee T, Heinemann M, Chang S, Levy B, Jovanovic L, Richardson M, Bosco B, Dwoskin A, Hanna R, Barron S, Campbell R, Bhan A, Kruger D, Jones J, Edwards P, Bhan A, Carey J, Angus E, Thomas A, Galprin A, McLellan M, Whitehouse F, Bergenstal R, Johnson M, Gunyou K, Thomas L, Laechelt J, Hollander P, Spencer M, Kendall D, Cuddihy R, Callahan P, List S, Gott J, Rude N, Olson B, Franz M, Castle G, Birk R, Nelson J, Freking D, Gill L, Mestrezat W, Etzwiler D, Morgan K, Aiello L, Golden E, Arrigg P, Asuquo V, Beaser R, Bestourous L, Cavallerano J, Cavicchi R, Ganda O, Hamdy O, Kirby R, Murtha T, Schlossman D, Shah S, Sharuk G, Silva P, Silver P, Stockman M, Sun J, Weimann E, Wolpert H, Aiello L, Jacobson A, Rand L, Rosenzwieg J, Nathan D, Larkin M, Christofi M, Folino K, Godine J, Lou P, Stevens C, Anderson E, Bode H, Brink S, Cornish C, Cros D, Delahanty L, eManbey ., Haggan C, Lynch J, McKitrick C, Norman D, Moore D, Ong M, Taylor C, Zimbler D, Crowell S, Fritz S, Hansen K, Gauthier‐Kelly C, Service F, Ziegler G, Barkmeier A, Schmidt L, French B, Woodwick R, Rizza R, Schwenk W, Haymond M, Pach J, Mortenson J, Zimmerman B, Lucas A, Colligan R, Luttrell L, Lopes‐Virella M, Caulder S, Pittman C, Patel N, Lee K, Nutaitis M, Fernandes J, Hermayer K, Kwon S, Blevins A, Parker J, Colwell J, Lee D, Soule J, Lindsey P, Bracey M, Farr A, Elsing S, Thompson T, Selby J, Lyons T, Yacoub‐Wasef S, Szpiech M, Wood D, Mayfield R, Molitch M, Adelman D, Colson S, Jampol L, Lyon A, Gill M, Strugula Z, Kaminski L, Mirza R, Simjanoski E, Ryan D, Johnson C, Wallia A, Ajroud‐Driss S, Astelford P, Leloudes N, Degillio A, Schaefer B, Mudaliar S, Lorenzi G, Goldbaum M, Jones K, Prince M, Swenson M, Grant I, Reed R, Lyon R, Kolterman O, Giotta M, Clark T, Friedenberg G, Sivitz W, Vittetoe B, Kramer J, Bayless M, Zeitler R, Schrott H, Olson N, Snetselaar L, Hoffman R, MacIndoe J, Weingeist T, Fountain C, Miller R, Johnsonbaugh S, Patronas M, Carney M, Mendley S, Salemi P, Liss R, Hebdon M, Counts D, Donner T, Gordon J, Hemady R, Kowarski A, Ostrowski D, Steidl S, Jones B, Herman W, Martin C, Pop‐Busui R, Greene D, Stevens M, Burkhart N, Sandford T, Floyd J, Bantle J, Flaherty N, Terry J, Koozekanani D, Montezuma S, Wimmergren N, Rogness B, Mech M, Strand T, Olson J, McKenzie L, Kwong C, Goetz F, Warhol R, Hainsworth D, Goldstein D, Hitt S, Giangiacomo J, Schade D, Canady J, Burge M, Das A, Avery R, Ketai L, Chapin J, Schluter M, Rich J, Johannes C, Hornbeck D, Schutta M, Bourne P, Brucker A, Braunstein S, Schwartz S, Maschak‐Carey B, Baker L, Orchard T, Cimino L, Songer T, Doft B, Olson S, Becker D, Rubinstein D, Bergren R, Fruit J, Hyre R, Palmer C, Silvers N, Lobes L, Rath PP, Conrad P, Yalamanchi S, Wesche J, Bratkowksi M, Arslanian S, Rinkoff J, Warnicki J, Curtin D, Steinberg D, Vagstad G, Harris R, Steranchak L, Arch J, Kelly K, Ostrosaka P, Guiliani M, Good M, Williams T, Olsen K, Campbell A, Shipe C, Conwit R, Finegold D, Zaucha M, Drash A, Morrison A, Malone J, Bernal M, Pavan P, Grove N, Tanaka E, McMillan D, Vaccaro‐Kish J, Babbione L, Solc H, DeClue T, Dagogo‐Jack S, Wigley C, Ricks H, Kitabchi A, Chaum E, Murphy M, Moser S, Meyer D, Iannacone A, Yoser S, Bryer‐Ash M, Schussler S, Lambeth H, Raskin P, Strowig S, Basco M, Cercone S, Zinman B, Barnie A, Devenyi R, Mandelcorn M, Brent M, Rogers S, Gordon A, Bakshi N, Perkins B, Tuason L, Perdikaris F, Ehrlich R, Daneman D, Perlman K, Ferguson S, Palmer J, Fahlstrom R, de Boer I, Kinyoun J, Van Ottingham L, Catton S, Ginsberg J, McDonald C, Harth J, Driscoll M, Sheidow T, Mahon J, Canny C, Nicolle D, Colby P, Dupre J, Hramiak I, Rodger N, Jenner M, Smith T, Brown W, May M, Lipps Hagan J, Agarwal A, Adkins T, Lorenz R, Feman S, Survant L, White N, Levandoski L, Grand G, Thomas M, Joseph D, Blinder K, Shah G, Burgess D, Boniuk I, Santiago J, Tamborlane W, Gatcomb P, Stoessel K, Ramos P, Fong K, Ossorio P, Ahern J, Gubitosi‐Klug R, Meadema‐Mayer L, Beck C, Farrell K, Genuth S, Quin J, Gaston P, Palmert M, Trail R, Dahms W, Lachin J, Backlund J, Bebu I, Braffett B, Diminick L, Gao X, Hsu W, Klumpp K, Pan H, Trapani V, Cleary P, McGee P, Sun W, Villavicencio S, Anderson K, Dews L, Younes N, Rutledge B, Chan K, Rosenberg D, Petty B, Determan A, Kenny D, Williams C, Cowie C, Siebert C, Steffes M, Arends V, Bucksa J, Nowicki M, Chavers B, O'Leary D, Polak J, Harrington A, Funk L, Crow R, Gloeb B, Thomas S, O'Donnell C, Soliman E, Zhang Z, Li Y, Campbell C, Keasler L, Hensley S, Hu J, Barr M, Taylor T, Prineas R, Feldman E, Albers J, Low P, Sommer C, Nickander K, Speigelberg T, Pfiefer M, Schumer M, Moran M, Farquhar J, Ryan C, Sandstrom D, Williams T, Geckle M, Cupelli E, Thoma F, Burzuk B, Woodfill T, Danis R, Blodi B, Lawrence D, Wabers H, Gangaputra S, Neill S, Burger M, Dingledine J, Gama V, Sussman R, Davis M, Hubbard L, Budoff M, Darabian S, Rezaeian P, Wong N, Fox M, Oudiz R, Kim L, Detrano R, Cruickshanks K, Dalton D, Bainbridge K, Lima J, Bluemke D, Turkbey E, der Geest ., Liu C, Malayeri A, Jain A, Miao C, Chahal H, Jarboe R, Nathan D, Monnier V, Sell D, Strauch C, Hazen S, Pratt A, Tang W, Brunzell J, Purnell J, Natarajan R, Miao F, Zhang L, Chen Z, Paterson A, Boright A, Bull S, Sun L, Scherer S, Lopes‐Virella M, Lyons T, Jenkins A, Klein R, Virella G, Jaffa A, Carter R, Stoner J, Garvey W, Lackland D, Brabham M, McGee D, Zheng D, Mayfield R, Maynard J, Wessells H, Sarma A, Jacobson A, Dunn R, Holt S, Hotaling J, Kim C, Clemens Q, Brown J, McVary K. Oxidative Stress and Cardiovascular Risk in Type 1 Diabetes Mellitus: Insights From the DCCT/EDIC Study. J Am Heart Assoc 2018. [PMCID: PMC6015340 DOI: 10.1161/jaha.117.008368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background
Hyperglycemia leading to increased oxidative stress is implicated in the increased risk for the development of macrovascular and microvascular complications in patients with type 1 diabetes mellitus.
Methods and Results
A random subcohort of 349 participants was selected from the
DCCT
/
EDIC
(Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications) cohort. This included 320 controls and 29 cardiovascular disease cases that were augmented with 98 additional known cases to yield a case cohort of 447 participants (320 controls, 127 cases). Biosamples from
DCCT
baseline, year 1, and closeout of
DCCT
, and 1 to 2 years post‐
DCCT
(
EDIC
years 1 and 2) were measured for markers of oxidative stress, including plasma myeloperoxidase, paraoxonase activity, urinary F
2α
isoprostanes, and its metabolite, 2,3 dinor‐8
iso
prostaglandin F
2α
. Following adjustment for glycated hemoblobin and weighting the observations inversely proportional to the sampling selection probabilities, higher paraoxonase activity, reflective of antioxidant activity, and 2,3 dinor‐8
iso
prostaglandin F
2α
, an oxidative marker, were significantly associated with lower risk of cardiovascular disease (−4.5% risk for 10% higher paraoxonase,
P
<0.003; −5.3% risk for 10% higher 2,3 dinor‐8
iso
prostaglandin F
2α
,
P
=0.0092). In contrast, the oxidative markers myeloperoxidase and F
2α
isoprostanes were not significantly associated with cardiovascular disease after adjustment for glycated hemoblobin. There were no significant differences between
DCCT
intensive and conventional treatment groups in the change in all biomarkers across time segments.
Conclusions
Heightened antioxidant activity (rather than diminished oxidative stress markers) is associated with lower cardiovascular disease risk in type 1 diabetes mellitus, but these biomarkers did not change over time with intensification of glycemic control.
Clinical Trial Registration
URL
:
https://www.clinicaltrials.gov
. Unique identifiers:
NCT
00360815 and
NCT
00360893.
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Affiliation(s)
- W.H. Wilson Tang
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
| | - Paula McGee
- The Biostatistics Center, George Washington University, Rockville, MD
| | - John M. Lachin
- The Biostatistics Center, George Washington University, Rockville, MD
| | - Daniel Y. Li
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | | | - Stanley L. Hazen
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
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McGrath B, Lynch J, Coe B, Wallace S, Bonvento B, Eusuf D, Firn M. Collaborative national consensus and prioritisation of tracheostomy quality improvements in the United Kingdom. Br J Anaesth 2018. [DOI: 10.1016/j.bja.2017.11.061] [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: 11/26/2022] Open
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Nugent K, O'Neill B, Lynch J, Higgins M, Brennan V, Dunne M, Skourou C. EP-1503: Rectal motion in patients receiving neoadjuvant radiotherapy for rectal cancer in supine position. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31812-7] [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: 10/14/2022]
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Abstract
Diurnal glucose profiles have been compared in ten insulin dependent diabetics receiving, firstly, a twice-daily soluble insulin (SI): isophane insulin (NPHI) regimen containing a high proportion of SI (mean 73%) and, secondly, Mixtard insulin (30% SI, 70% NPHI). For each patient the two regimens gave similar profiles though nocturnal blood glucose control was better on Mixtard. HbA1 values were similar on the two regimens. The findings show that, using highly purified formulations, small changes in insulin proportions in twice-daily SI: NPHI regimens may be irrelevant to diabetic control; they also suggest that highly purified NPHI may have a substantially shorter duration of action than its older counterpart and that the convenient regimen of twice-daily Mixtard is usually as good as any more complicated ‘tailormade’ regimen of highly purified insulins.
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Whitfield CJ, Phelan J, Buckley J, Clark C, Guthrie S, Lynch J. Estimating base cation weathering rates in the United States: challenges of uncertain soil mineralogy and specific surface area with applications of the PROFILE model. Water Air Soil Pollut 2018; 229:1-15. [PMID: 35350610 PMCID: PMC8958929 DOI: 10.1007/s11270-018-3691-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 01/10/2018] [Indexed: 06/14/2023]
Abstract
The weathering release rate of base cations (BCw) from soil minerals is fundamentally important for terrestrial ecosystem growth, function, and sensitivity to acid deposition. Understanding BCw is necessary to reduce or prevent damage to acid-sensitive natural systems, in that this information is needed to both evaluate the effectiveness of existing policies, and guide establishment of further policies in the event they are required. Yet BCw is challenging to estimate. In this study, major sources of uncertainty associated with a process-based model (PROFILE) commonly used to estimate weathering rates were quantified in the context of efforts to quantify BCw for upland forest sites across the continental U.S. These include uncertainty associated with parameterization of mineral content where horizon data are not available, stoichiometry of individual minerals, and specific surface area of soil and individual soil minerals. Mineral stoichiometry was not an important influence on BCw estimates (uncertainty < 1%). Characterizing B horizon mineralogy by averaging A and C horizons was found to be a minor (< 5%) contributor to uncertainty in some areas, but where mineralogy is known to vary with depth the uncertainty can be large. Estimating mineral-specific surface areas had a strong influence on estimated BCw, with rates increasing by as much as 250%. The greatest uncertainty in BCw estimates, however, was attributed to the particle size class-based method used to estimate the total specific surface area upon which weathering reactions can take place. The resulting uncertainty in BCw spanned multiple orders of magnitude at individual sites, highlighting this as the greatest challenge to ongoing efforts to produce robust BCw estimates across large spatial scales in the U.S. Recommendations for improving estimates of BCw to support robust decision making for protection against terrestrial acidification are provided.
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Affiliation(s)
- Colin J Whitfield
- School of Environment and Sustainability & Global Institute for Water Security University of Saskatchewan, Saskatchewan, Canada S7N 3H5
| | - Jennifer Phelan
- Research Triangle Institute International, Research Triangle Park, North Carolina, USA, 27709
| | - John Buckley
- Research Triangle Institute International, Research Triangle Park, North Carolina, USA, 27709
| | - Christopher Clark
- National Center for Environmental Assessment, U.S. Environmental Protection Agency, Arlington, VA, United States 22202
| | - Scott Guthrie
- Research Triangle Institute International, Research Triangle Park, North Carolina, USA, 27709
| | - Jason Lynch
- Office of Air and Radiation, Office of Atmospheric Programs, Clean Air Markets Division, U.S. Environmental Protection Agency, Washington, DC, United States 20460
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Clemons TD, Bradshaw M, Toshniwal P, Chaudhari N, Stevenson AW, Lynch J, Fear M, Wood FM, Iyer KS. Coherency image analysis to quantify collagen architecture: implications in scar assessment. RSC Adv 2018; 8:9661-9669. [PMID: 35540841 PMCID: PMC9078703 DOI: 10.1039/c7ra12693j] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 02/27/2018] [Indexed: 11/21/2022] Open
Abstract
A novel technique for the fast and robust quantification of collagen architecture following scarring.
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Affiliation(s)
- T. D. Clemons
- School of Molecular Sciences M313
- The University of Western Australia
- Crawley
- Australia
| | - M. Bradshaw
- School of Molecular Sciences M313
- The University of Western Australia
- Crawley
- Australia
| | - P. Toshniwal
- School of Molecular Sciences M313
- The University of Western Australia
- Crawley
- Australia
| | - N. Chaudhari
- School of Molecular Sciences M313
- The University of Western Australia
- Crawley
- Australia
| | - A. W. Stevenson
- Fiona Wood Foundation and Burn Injury Research Unit
- The University of Western Australia, M318
- Crawley
- Australia
| | - J. Lynch
- Fiona Wood Foundation and Burn Injury Research Unit
- The University of Western Australia, M318
- Crawley
- Australia
- Royal College of Surgeon's of Ireland
| | - M. W. Fear
- Fiona Wood Foundation and Burn Injury Research Unit
- The University of Western Australia, M318
- Crawley
- Australia
| | - F. M. Wood
- Fiona Wood Foundation and Burn Injury Research Unit
- The University of Western Australia, M318
- Crawley
- Australia
| | - K. Swaminathan Iyer
- School of Molecular Sciences M313
- The University of Western Australia
- Crawley
- Australia
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Faber B, Baird D, Gregson C, Gregory J, Barr R, Aspden R, Lynch J, Nevitt M, Lane N, Orwoll E, Tobias J. DXA-derived hip shape is related to osteoarthritis: findings from in the MrOS cohort. Osteoarthritis Cartilage 2017; 25:2031-2038. [PMID: 28942368 PMCID: PMC5722811 DOI: 10.1016/j.joca.2017.09.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 08/16/2017] [Accepted: 09/11/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Statistical shape modelling (SSM) of radiographs has been used to explore relationships between altered joint shape and hip osteoarthritis (OA). We aimed to apply SSM to Dual-energy X-ray Absorptiometry (DXA) hip scans, and examine associations between resultant hip shape modes (HSMs), radiographic hip OA (RHOA), and hip pain, in a large population based cohort. METHOD SSM was performed on baseline hip DXA scans from the Osteoporotic Fractures in Men (MrOS) Study. Associations between the top ten HSMs, and prevalent RHOA from pelvic radiographs obtained 4.6 years later, were analysed in 4100 participants. RHOA was defined as Croft score ≥2. Hip pain was based on pain on walking, hip pain on examination, and Western Ontario and McMaster Universities Arthritis Index (WOMAC). RESULTS The five HSMs associated with RHOA showed features of either pincer- or cam-type deformities. HSM 1 (increased pincer-type deformity) was positively associated with RHOA [1.23 (1.09, 1.39)] [odds ratio (OR) and 95% CI]. HSM 8 (reduced pincer-type deformity) was inversely associated with RHOA [0.79 (0.70, 0.89)]. HSM 10 (increased cam-type deformity) was positively associated with RHOA [1.21 (1.07, 1.37)]. HSM 3 and HSM 4 (reduced cam-type deformity) were inversely associated with RHOA [0.73 (0.65, 0.83) and 0.82 (0.73, 0.93), respectively]. HSM 3 was inversely related to pain on examination [0.84 (0.76, 0.92)] and walking [0.88, (0.81, 0.95)], and to WOMAC score [0.87 (0.80, 0.93)]. CONCLUSIONS DXA-derived measures of hip shape are associated with RHOA, and to a lesser extent hip pain, possibly reflecting their role in the pathogenesis of hip OA.
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Affiliation(s)
- B.G. Faber
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK,Address correspondence and reprint requests to: B.G. Faber, Musculoskeletal Research Unit, Learning and Research Building, Southmead Hospital, Bristol BS10 5NB, UK.Musculoskeletal Research UnitLearning and Research BuildingSouthmead HospitalBristolBS10 5NBUK
| | - D. Baird
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
| | - C.L. Gregson
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
| | - J.S. Gregory
- Arthritis and Musculoskeletal Medicine, Institute of Medical Sciences, University of Aberdeen, AB25 2ZD, UK
| | - R.J. Barr
- Arthritis and Musculoskeletal Medicine, Institute of Medical Sciences, University of Aberdeen, AB25 2ZD, UK
| | - R.M. Aspden
- Arthritis and Musculoskeletal Medicine, Institute of Medical Sciences, University of Aberdeen, AB25 2ZD, UK
| | - J. Lynch
- Department of Epidemiology and Biostatistics, University of California San Francisco, California, USA
| | - M.C. Nevitt
- Department of Epidemiology and Biostatistics, University of California San Francisco, California, USA
| | - N.E. Lane
- Department of Medicine, University of California Davis, Sacramento, CA, USA
| | - E. Orwoll
- Division of Endocrinology, Oregon Health & Science University, Portland, USA
| | - J.H. Tobias
- Musculoskeletal Research Unit, School of Clinical Sciences, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
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Affiliation(s)
- J Lynch
- Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
| | - S M Crawley
- Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
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Rhodes C, Bingham A, Heard AM, Hewitt J, Lynch J, Waite R, Bell MD. Diatoms to human uses: linking nitrogen deposition, aquatic eutrophication, and ecosystem services. Ecosphere 2017. [DOI: 10.1002/ecs2.1858] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Charles Rhodes
- Oak Ridge Institute for Science and Education Office of Water, and Office of Research and Development U.S. Environmental Protection Agency Washington D.C. 20460 USA
| | - Andrew Bingham
- Air Resources Division National Park Service Denver Colorado 80225 USA
| | - Andrea M. Heard
- Sierra Nevada Network National Park Service Three Rivers California 93271 USA
| | - Julie Hewitt
- Office of Water U.S. Environmental Protection Agency Washington D.C. 20460 USA
| | - Jason Lynch
- Office of Air and Radiation U.S. Environmental Protection Agency Washington D.C. 20460 USA
| | - Randall Waite
- Office of Air and Radiation U.S. Environmental Protection Agency Durham North Carolina 27711 USA
| | - Michael D. Bell
- Air Resources Division National Park Service Denver Colorado 80225 USA
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Bazin D, Dexpert H, Guyot-Sionnest N, Bournonville J, Lynch J. EXAFS characterization of reforming catalysts : examples of recent applications. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1989861707] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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