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Jiang N, Akter R, Ross G, White S, Kirkwood J, Gunashanhar G, Thompson S, Riley M, Azzi M. On thresholds for controlling negative particle (PM 2.5) readings in air quality reporting. Environ Monit Assess 2023; 195:1187. [PMID: 37698727 PMCID: PMC10497433 DOI: 10.1007/s10661-023-11750-4] [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] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 08/18/2023] [Indexed: 09/13/2023]
Abstract
Ambient PM2.5 (particles less than 2.5 μm in diameter) is monitored in many countries including Australia. Occasionally PM2.5 instruments may report negative measurements, although in realty the ambient air can never contain negative amounts of particles. Some negative readings are caused by instrument faults or procedural errors, thus can be simply invalidated from air quality reporting. There are occasions, however, when negative readings occur due to other factors including technological or procedural limitations. Treatment of such negative data requires consideration of factors such as measurement uncertainty, instrument noise and risk for significant bias in air quality reporting. There is very limited documentation on handling negative PM2.5 data in the literature. This paper demonstrates how a threshold is determined for controlling negative hourly PM2.5 readings in the New South Wales (NSW) air quality data system. The investigation involved a review of thresholds used in different data systems and an assessment of instrument measurement uncertainties, zero air test data and impacts on key reporting statistics when applying different thresholds to historical datasets. The results show that a threshold of -10.0 μg/m3 appears optimal for controlling negative PM2.5 data in public reporting. This choice is consistent with the measurement uncertainty estimates and the zero air test data statistics calculated for the NSW Air Quality Monitoring Network, and is expected not to have significant impacts on key compliance reporting statistics such as data availability and annual average pollution levels. The analysis can be useful for air quality monitoring in other Australian jurisdictions or wider context.
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Affiliation(s)
- Ningbo Jiang
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia.
| | - Rinat Akter
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
| | - Glenn Ross
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
| | - Stephen White
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
| | - John Kirkwood
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
| | - Gunaratnam Gunashanhar
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
| | - Scott Thompson
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
| | - Matthew Riley
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
| | - Merched Azzi
- Science, Economics and Insights Division, New South Wales Department of Planning and Environment, Sydney, Australia
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Bassett R, Mehta D, Thompson S, Al-Imarah E. Novel machine learning models for flow imaging microscopy sub-visible particle classification in protein formulations. Int J Pharm 2023:123192. [PMID: 37402441 DOI: 10.1016/j.ijpharm.2023.123192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/26/2023] [Accepted: 06/28/2023] [Indexed: 07/06/2023]
Abstract
Understanding the particulate content of formulated drug products is essential for ensuring patient safety. In particular, it is critical to assess the presence of aggregated proteins or extraneous particles (e.g. fibres) that pose potential dangers. Additionally, it is useful to be able to distinguish non-proteinaceous particles, such as silicone oil droplets that commonly occur in formulations stored in pre-filled syringes. Standard particle counting methods (e.g. light obscuration) provide only total numbers of particles of a given size, but provide no mechanism for particle classification. Significant recent work has focused on the use of flow imaging microscopy to enable simultaneous classification and counting of particles using machine learning (ML) models including convolutional neural networks (CNN). In this paper we expand upon this theme by exploring techniques for achieving high prediction accuracy when the size of the labeled dataset used for model training is limited. We demonstrate that maximum performance can be achieved by combining multiple techniques such as data augmentation, transfer learning, and novel (to this field) models combining imaging and tabular data.
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Affiliation(s)
- Robert Bassett
- CSL Innovation, 655 Elizabeth St, Melbourne, 3000, VIC, Australia.
| | - Dharmini Mehta
- CSL Innovation, 655 Elizabeth St, Melbourne, 3000, VIC, Australia
| | - Scott Thompson
- CSL Innovation, 655 Elizabeth St, Melbourne, 3000, VIC, Australia
| | - Emad Al-Imarah
- CSL Innovation, 655 Elizabeth St, Melbourne, 3000, VIC, Australia
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Selvanathan A, Forwood C, Russell J, Batten K, Thompson S, Palmer EE, Macintosh R, Nightingale S, Mitchell R, Alvaro F, Dudding-Byth T, Lunke S, Christodoulou J, Stark Z, White F, Jones SA, Bhattacharya K. Rapid whole-genome sequencing leading to specific treatment for two infants with haemophagocytic lymphohistiocytosis due to Wolman disease. Pediatr Blood Cancer 2023:e30394. [PMID: 37092873 DOI: 10.1002/pbc.30394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 04/08/2023] [Accepted: 04/10/2023] [Indexed: 04/25/2023]
Affiliation(s)
- Arthavan Selvanathan
- Genetic Metabolic Disorders Service, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
| | - C Forwood
- Centre for Clinical Genetics, Sydney Children's Hospital, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
| | - J Russell
- Genetic Metabolic Disorders Service, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
- Centre for Clinical Genetics, Sydney Children's Hospital, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
| | - K Batten
- Department of Nutrition and Dietetics, The Children's Hospital at Westmead, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
- Faculty of Medicine & Health, University of New South Wales, Sydney, New South Wales, Australia
| | - S Thompson
- Department of Nutrition and Dietetics, The Children's Hospital at Westmead, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
- Disciplines of Genetic Medicine and Child and Adolescent Health, The University of Sydney, Sydney, New South Wales, Australia
| | - E E Palmer
- Centre for Clinical Genetics, Sydney Children's Hospital, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
- Faculty of Medicine & Health, University of New South Wales, Sydney, New South Wales, Australia
| | - R Macintosh
- Centre for Clinical Genetics, Sydney Children's Hospital, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
| | - S Nightingale
- Department of Gastroenterology, John Hunter Children's Hospital, Newcastle, New South Wales, Australia
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - R Mitchell
- Faculty of Medicine & Health, University of New South Wales, Sydney, New South Wales, Australia
- Kids Cancer Centre, Sydney Children's Hospital, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
| | - F Alvaro
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
- Children's Cancer and Haematology Service, John Hunter Children's Hospital, Newcastle, New South Wales, Australia
| | - T Dudding-Byth
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
- NSW Genetics of Learning Disability (GOLD) Service, Hunter New England Health, Waratah, New South Wales, Australia
| | - S Lunke
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - J Christodoulou
- Disciplines of Genetic Medicine and Child and Adolescent Health, The University of Sydney, Sydney, New South Wales, Australia
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Z Stark
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
- Australian Genomics Health Alliance, Darlinghurst, New South Wales, Australia
| | - F White
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester, UK
| | - S A Jones
- Willink Biochemical Genetics Unit, Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester, UK
| | - K Bhattacharya
- Genetic Metabolic Disorders Service, Sydney Children's Hospitals Network, Westmead, New South Wales, Australia
- Disciplines of Genetic Medicine and Child and Adolescent Health, The University of Sydney, Sydney, New South Wales, Australia
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Ferraguti F, Fredes F, Hou WH, Somogyi P, Thompson S. Marco Capogna, a pioneering neuroscientist and true European. Eur J Neurosci 2023; 57:1629-1638. [PMID: 37070614 DOI: 10.1111/ejn.15950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/23/2023] [Accepted: 02/25/2023] [Indexed: 04/19/2023]
Affiliation(s)
- Francesco Ferraguti
- Department of Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Felipe Fredes
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Wen-Hsien Hou
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Peter Somogyi
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Scott Thompson
- Department of Psychiatry, University of Colorado School of Medicine, Aurora, Colorado, USA
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Thompson S. Employers must provide better support to workers with long covid. BMJ 2023; 381:800. [PMID: 37024137 DOI: 10.1136/bmj.p800] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Tesfalidet S, Thompson S, Welch B, Frimpong R, Reisenauer C, Flemming C, Moynagh M, Schmit G, Atwell T, Takahashi E. Abstract No. 170 Bleeding Complications Requiring Therapeutic Trans-Arterial Embolization Following Percutaneous Cryoablation for cT1b and cT2 Renal Masses without and with Pre-ablation Prophylactic Trans-Arterial Embolization. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.225] [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: 02/27/2023] Open
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Mushtaq A, Woodrum D, Thompson S, Adamo D, Lomas D, Favazza C, Lu A, Kwon E. Abstract No. 91 MRI-Guided Cryoablation of Oligo-Metastatic Prostate Cancer to the Pelvic Lymph Nodes. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.138] [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: 02/27/2023] Open
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Augustine MR, Thompson S, Powell G, Knavel-Koepsel E, Adamo D, Bendel E, Anderson K, Bjarnason H, Tollefson M, Woodrum DA. Percutaneous MR Imaging-Guided Laser Ablation for the Treatment of Symptomatic Cervicofacial Vascular Malformations. J Vasc Interv Radiol 2023; 34:197-204. [PMID: 36257582 DOI: 10.1016/j.jvir.2022.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 09/04/2022] [Accepted: 10/09/2022] [Indexed: 11/05/2022] Open
Abstract
PURPOSE To evaluate the safety and effectiveness of percutaneous magnetic resonance (MR) imaging-guided laser ablation for the treatment of symptomatic soft tissue vascular malformations (VMs) in the face and neck. MATERIALS AND METHODS An institutional review board-approved retrospective review was undertaken of all consecutive patients who underwent MR imaging-guided and monitored laser ablation for treatment of symptomatic, cervicofacial soft tissue VM. Preablation and postablation MR imaging findings were independently reviewed. Preablation and postablation VM sizes were documented. Preablation T2 signal characteristics and enhancement patterns as well as postablation change in both signal and enhancement were semiquantitatively assessed. Changes in VM size were compared using a paired t test. RESULTS Thirteen patients (women, 9; age, 14.5-69.5 years) with 13 VMs were treated for moderate-to-severe pain (n = 4), swelling/mass effect (n = 8), or predominantly cosmesis (n = 1) with 22 total ablation sessions. The baseline maximum VM diameter was 5.7 cm ± 4.2. At baseline, all VMs (100%) demonstrated variable T2-weighted signal hyperintensity and enhancement. For painful VM, the baseline pain score was 8 ± 1. Clinical follow-up was available for 10 patients. Of patients with available follow-up, 3 (100%) treated for moderate-to-severe pain and 7 (100%) treated for swelling/mass effect reported subjective complete or partial symptomatic relief. The patient treated predominantly for cosmetic reasons was lost to follow-up. Two patients (15.4%) experienced minor adverse events by the Society of Interventional Radiology standards. There were no major adverse events. CONCLUSIONS MR imaging-guided and monitored percutaneous laser ablation is safe and effective for the treatment of symptomatic, cervicofacial VMs.
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Affiliation(s)
| | - Scott Thompson
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | - Garret Powell
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | | | - Daniel Adamo
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | - Emily Bendel
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | | | | | - Megha Tollefson
- Department of Dermatology, Mayo Clinic, Rochester, Minnesota
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Yasir S, Thompson S, Chen ZE, Knudson R, Knutson D, Kloft-Nelson S, Graham RP, Jain D, Simon SM, Wu TT, Torbenson M. Alternative lengthening of telomeres in primary hepatic neoplasms. Hum Pathol 2023; 131:79-86. [PMID: 36370823 PMCID: PMC10756352 DOI: 10.1016/j.humpath.2022.11.003] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/31/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022]
Abstract
The alternative lengthening of telomeres (ALT) phenotype is characterized by ultra-bright telomeres on fluorescence in situ hybridization (FISH) and is a marker of a unique mechanism of telomere maintenance in tumors. ALT does not occur in normal tissues. ALT has been described in hepatocellular carcinoma (5-10%) and in primary hepatic angiosarcomas (75%). To study the frequency of ALT in other primary hepatic tumors, a wide range of primary hepatic neoplasms were retrieved. The tumors included the following: intrahepatic and hilar cholangiocarcinomas (N = 110), hepatic adenomas (N = 35), hepatocellular carcinomas (N = 30), fibrolamellar carcinomas (n = 11), combined cholangiocarcinoma-hepatocellular carcinomas (N = 8), carcinosarcoma (N = 10), hepatoblastomas (N = 5), hemangiomas (N = 4), angiosarcomas (N = 8), epithelioid hemangioendotheliomas (N = 10), calcified nested stromal epithelial tumor (N = 2), embryonal sarcoma (N = 2), rhabdoid tumor (N = 1), bile duct adenoma (N = 1), and angiomyolipoma (N = 1). For epithelial tumors, ALT-FISH was positive in one carcinosarcoma (10% of cases), one cholangiocarcinoma (1% of cases), and one combined hepatocellular carcinoma-cholangiocarcinoma (13% of cases). In the hepatocellular carcinoma component of both the carcinosarcoma and the combined hepatocellular carcinoma-cholangiocarcinoma, the tumor cells showed patchy marked nuclear pleomorphism akin to that described previously for chromophobe hepatocellular carcinoma, which are typically ALT FISH positive. The ALT-positive cholangiocarcinoma also showed patchy, striking nuclear pleomorphism. For soft tissue tumors, ALT was positive in two angiosarcomas (N = 2; 25% of cases). In summary, this study shows that ALT-FISH is positive in rare carcinosarcomas, cholangiocarcinomas, and combined cholangiocarcinoma-hepatocellular carcinoma. ALT is not a significant mechanism of telomere maintenance in hepatocellular adenomas or fibrolamellar carcinomas and was negative in all other tested primary hepatic neoplasms. ALT-FISH is also positive in a subset of primary hepatic angiosarcomas.
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Affiliation(s)
- Saba Yasir
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, MN, 55905, USA
| | - Scott Thompson
- Department of Radiology, Mayo Clinic Rochester, MN, 55905, USA
| | - Zongming Eric Chen
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, MN, 55905, USA
| | - Ryan Knudson
- Medical Genome Facility, Cytogenetics Core Laboratory, Mayo Clinic Rochester, MN, 55905, USA
| | - Darlene Knutson
- Medical Genome Facility, Cytogenetics Core Laboratory, Mayo Clinic Rochester, MN, 55905, USA
| | - Sara Kloft-Nelson
- Medical Genome Facility, Cytogenetics Core Laboratory, Mayo Clinic Rochester, MN, 55905, USA
| | - Rondell P Graham
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, MN, 55905, USA
| | | | - Sanford M Simon
- Laboratory of Cellular Biophysics, The Rockefeller University, 1230 York Avenue, NY, NY, 10065, USA
| | - Tsung-Teh Wu
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, MN, 55905, USA
| | - Michael Torbenson
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, MN, 55905, USA.
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Tran NH, Muñoz S, Thompson S, Hallemeier CL, Bruix J. Hepatocellular carcinoma downstaging for liver transplantation in the era of systemic combined therapy with anti-VEGF/TKI and immunotherapy. Hepatology 2022; 76:1203-1218. [PMID: 35765265 DOI: 10.1002/hep.32613] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 12/08/2022]
Abstract
Hepatocellular carcinoma remains a global health challenge affecting close to 1 million cases yearly. Liver transplantation provides the best long-term outcomes for those meeting strict criteria. Efforts have been made to expand these criteria, whereas others have attempted downstaging approaches. Although locoregional approaches to downstaging are appealing and have demonstrated efficacy, limitations and challenges exists including poor imaging modality to assess response and appropriate endpoints along the process. Recent advances in systemic treatments including immune checkpoint inhibitors alone or in combination with tyrosine kinase inhibitors have prompted the discussion regarding their role for downstaging disease prior to transplantation. Here, we provide a review of prior locoregional approaches for downstaging, new systemic agents and their role for downstaging, and finally, key and critical considerations of the assessment, endpoints, and optimal designs in clinical trials to address this key question.
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Affiliation(s)
- Nguyen H Tran
- Division of Medical Oncology, Department of Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Sergio Muñoz
- BCLC Group, Liver Unit, Hospital Clinic Barcelona, IDIBAPS, CIBEREHD, University of Barcelona, Barcelona, Spain
| | - Scott Thompson
- Division of Vascular and Interventional Radiology, Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Christopher L Hallemeier
- Division of Radiation Oncology, Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Jordi Bruix
- BCLC Group, Liver Unit, Hospital Clinic Barcelona, IDIBAPS, CIBEREHD, University of Barcelona, Barcelona, Spain
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Saunders L, Edwards P, Taylor J, Nye D, Grinter D, Allan D, Thompson S. A temperature-dependent flexible proton-transfer system. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322090854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Thompson S, Teixeira-Dias F, Paulino M, Hamilton A. Predictions on multi-class terminal ballistics datasets using conditional Generative Adversarial Networks. Neural Netw 2022; 154:425-440. [DOI: 10.1016/j.neunet.2022.07.034] [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: 02/01/2022] [Revised: 07/08/2022] [Accepted: 07/26/2022] [Indexed: 11/26/2022]
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13
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Thompson S, Gan J, Oppenheimer M. An unusual cause of urinary incontinence in a nonagenarian. BMJ 2022; 377:e067650. [PMID: 35738579 DOI: 10.1136/bmj-2021-067650] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- S Thompson
- Department of clinical geratology, John Radcliffe Hospital, Oxford University Hospitals, Oxford, UK
| | - J Gan
- Department of clinical geratology, John Radcliffe Hospital, Oxford University Hospitals, Oxford, UK
| | - M Oppenheimer
- Department of clinical geratology, John Radcliffe Hospital, Oxford University Hospitals, Oxford, UK
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Nedderman W, Thompson S, Takahashi E, Knavel E, Reisenauer C, Bendel E. Abstract No. 38 Intracardiac shunts among patients undergoing oil-based contrast lymphangiography: prevalence by echocardiography and rate of systemic arterial embolic complications. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Ivanova DL, Kilgore A, Klarquist J, Thompson S, Kedl R. Inflammation suppresses elevated TCF1 and FOXO1 expression in vaccine-elicited T cells. The Journal of Immunology 2022. [DOI: 10.4049/jimmunol.208.supp.122.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
T cells that express TCF1 display self-renewing capacity and are essential for the long-term T cell response during chronic infections and cancer. Due to their increased responsiveness to checkpoint blockade, TCF1+ T cells are recognized as promising targets for immunotherapies. We found that, in contrast to T cells responding to infections (Tinf), the majority of adjuvanted subunit vaccine-elicited T cells (Tvac) rapidly acquired a memory phenotype (CD127hi) and were TCF1hi. This suggests that Tvacs could be programmed by TCF1 to commit to a memory cell fate. We found that Tvac peak and memory responses were more compromised in the absence of TCF1 than those of Tinf. However, TCF1 KO Tvacs still developed memory, suggesting that additional factors were involved. FOXO1 is important for T cell memory after infections. We found that Tvacs expressed more FOXO1 than Tinfs. In contrast to Tinf, FOXO1 was required for both the peak and memory Tvac responses. Moreover, even though FOXO1 drives TCF1 in Tinfs, Tvacs expressed TCF1 independently of FOXO1. To explore the cause for such high expression of TCF1 and FOXO1 in Tvacs, we next examined the role of inflammatory mediators in their regulation. Tvac TCF1 and FOXO1 inversely correlated with adjuvant-elicited pro-inflammatory signals. Moreover, addition of pro-inflammatory TLR9 ligand CpG reduced Tvac TCF1, FOXO1 and memory. In contrast to prior reports, anti-IL-12 failed to reverse the effect of CpG on Tvacs. Anti-IFNγ, however, restored the Tvac memory phenotype even as CpG drove additional inflammatory mediators. Our data highlight the differences in the transcriptional regulation of vaccine- and infection-elicited T cells and provide insights into the mechanisms regulating TCF1 and FOXO1.
Supported by grants from NIH (T32 AI074491, R01 AI066121)
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Affiliation(s)
| | - Augustus Kilgore
- 1Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Jared Klarquist
- 1Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Scott Thompson
- 1Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Ross Kedl
- 1Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus
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DeVile J, Guy L, Clark C, Thompson S, Roy P. Outcomes of an exercise medicine programme for patients undergoing cancer treatment and its adaptation to a virtual model during COVID-19. Physiotherapy 2022. [PMCID: PMC8848153 DOI: 10.1016/j.physio.2021.12.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sanna A, Thompson S, Zajac J, Whitty K. Evaluation of palm-oil fly ash derived lithium silicate for CO2 sorption under simulated gasification conditions. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2021.101826] [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: 10/19/2022]
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Thompson S, Neill T, Mahaffee W, Miles T. Bridging the gap between powdery mildew genomics and valuable culturing methods of Erysiphe necator and Podosphaera aphanis. BIO Web Conf 2022. [DOI: 10.1051/bioconf/20225002012] [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: 11/14/2022] Open
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Linch F, Thompson S, Fleming C, Vella A, Andrews J. Hepatic Artery Embolization for Palliation of Symptomatic Hypoglycemia in Patients With Hepatic Insulinoma Metastases. J Endocr Soc 2021; 5:bvab149. [PMID: 34877442 PMCID: PMC8643969 DOI: 10.1210/jendso/bvab149] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Indexed: 12/03/2022] Open
Abstract
Context Insulinoma is a pancreatic neuroendocrine tumor that causes hyperinsulinemic hypoglycemia. Symptomatic hypoglycemia related to hepatic insulinoma metastases may be addressed with liver-directed therapies such as hepatic artery embolization. Objective This work aimed to determine the safety and effectiveness of bland hepatic artery embolization (HAE) for palliation of symptomatic hypoglycemia in patients with hepatic insulinoma metastases refractory to medical management. Methods An institutional review board–approved retrospective review was undertaken of all patients with a tissue (n = 18) or imaging (n = 2) diagnosis of hepatic insulinoma metastases and symptomatic hyperinsulinemic hypoglycemia refractory to medical management who underwent bland HAE at a single center between January 1, 1998 and November 1, 2020. Twenty patients (10 women, 10 men; mean age, 56 years; range, 18-84 years) were identified who individually underwent 1 (n = 7), 2 (n = 5), 3 (n = 5), 4 (n = 2), or 5 (n = 1) HAEs, for an overall total of 45 HAEs. Post-HAE hypoglycemia recurrence was defined as onset of adrenergic symptoms (eg, sweating, weakness, tremor), neuroglycopenic symptoms (eg, confusion, loss of consciousness), and/or documented serum glucose of less than 50 mg/dL, in the absence of an alternative explanation. Median time to first hypoglycemia recurrence, hypoglycemia-free survival (HFS), and overall survival (OS) were calculated using Kaplan-Meier method. Results Before HAE, all patients experienced adrenergic or neuroglycopenic symptoms alleviated by glucose intake, and 60% (n = 12) of patients had documented serum glucose of less than 50 mg/dL within 1 week of the first treatment. Median post-HAE follow-up was 9.4 months (mean, 26 months; range, 0.1-190 months). Postprocedural hypoglycemic symptom relief after the first HAE was reported in 100% (n = 20) of patients before discharge or at follow-up. Post-HAE hypoglycemia recurrence occurred in 60% (n = 12) of patients with a median time to first hypoglycemia recurrence of 2 months (mean, 14 months; range, 0.2-60 months). After the first HAE, median HFS was 14.5 months, and median OS was 16 months. One patient experienced labile postprocedure blood glucose levels requiring intensive care unit admission for intravenous dextrose. Otherwise, no major procedure-related complications occurred. Conclusion Bland HAE is a safe, effective, and repeatable procedure for palliation of symptomatic hypoglycemia in patients with hepatic insulinoma metastases refractory to medical management.
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Affiliation(s)
- Forrest Linch
- Division of Vascular and Interventional Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Scott Thompson
- Division of Vascular and Interventional Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Chad Fleming
- Division of Vascular and Interventional Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Adrian Vella
- Division of Endocrinology, Mayo Clinic, Rochester, Minnesota, USA
| | - James Andrews
- Division of Vascular and Interventional Radiology, Mayo Clinic, Rochester, Minnesota, USA
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Thompson S, Josey D, Fleming J. 137: Improving FEV1 in patients aged 6–12 years in a pediatric cystic fibrosis clinic. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01562-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Portelinha A, Thompson S, Smith RA, Da Silva Ferreira M, Asgari Z, Knezevic A, Seshan V, de Stanchina E, Gupta S, Denis L, Younes A, Reddy S. ASN007 is a selective ERK1/2 inhibitor with preferential activity against RAS-and RAF-mutant tumors. Cell Rep Med 2021; 2:100350. [PMID: 34337566 PMCID: PMC8324497 DOI: 10.1016/j.xcrm.2021.100350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 12/21/2020] [Accepted: 06/22/2021] [Indexed: 12/30/2022]
Abstract
Inhibition of the extracellular signal-regulated kinases ERK1 and ERK2 (ERK1/2) offers a promising therapeutic strategy in cancers harboring activated RAS/RAF/MEK/ERK signaling pathways. Here, we describe an orally bioavailable and selective ERK1/2 inhibitor, ASN007, currently in clinical development for the treatment of cancer. In preclinical studies, ASN007 shows strong antiproliferative activity in tumors harboring mutations in BRAF and RAS (KRAS, NRAS, and HRAS). ASN007 demonstrates activity in a BRAFV600E mutant melanoma tumor model that is resistant to BRAF and MEK inhibitors. The PI3K inhibitor copanlisib enhances the antiproliferative activity of ASN007 both in vitro and in vivo due to dual inhibition of RAS/MAPK and PI3K survival pathways. Our data provide a rationale for evaluating ASN007 in RAS/RAF-driven tumors as well as a mechanistic basis for combining ASN007 with PI3K inhibitors.
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Affiliation(s)
- Ana Portelinha
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | | | | | - Zahra Asgari
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Andrea Knezevic
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Venkatraman Seshan
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Elisa de Stanchina
- Antitumor Assessment Core, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | | | - Anas Younes
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Lymphoma Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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22
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Cosman G, Dickson S, Chin V, Thompson S, Gupta S, Chin Y. EFFICACY OF SALVAGE RADIOTHERAPY IN PATIENTS WITH RESIDUAL OR RECURRENT DIFFUSE LARGE B‐CELL LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.40_2881] [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: 11/08/2022]
Affiliation(s)
- G Cosman
- St George Hospital, Radiation Oncology Sydney Australia
| | - S Dickson
- Calvary Mater Hospital, Radiation Oncology Newcastle Australia
| | - V Chin
- Prince of Wales Hospital, Radiation Oncology Sydney Australia
| | - S Thompson
- Prince of Wales Hospital, Radiation Oncology Sydney Australia
| | - S Gupta
- Calvary Mater Hospital, Radiation Oncology Newcastle Australia
| | - Y Chin
- St George Hospital, Radiation Oncology Sydney Australia
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Johnson P, Thompson S, Adamo D, Fleming C, Bancos I, McKenzie T, Cheville J, Young W, Andrews J. Abstract No. 191 Adrenal venous sampling for lateralization of cortisol hypersecretion in patients with adrenocorticotropic hormone–independent Cushing syndrome and bilateral adrenal masses. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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24
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Linch F, Thompson S, Jin M, Frimpong R, Reisenauer C, Takahashi E. Abstract No. 185 Impact of anticoagulation and antiplatelet therapy on dialysis catheter fibrin sheath formation. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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25
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Thompson S, Pappas D. Protein-, polymer-, and silica-based luminescent nanomaterial probes for super resolution microscopy: a review. Nanoscale Adv 2021; 3:1853-1864. [PMID: 34381961 PMCID: PMC8323812 DOI: 10.1039/d0na00971g] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 02/15/2021] [Indexed: 06/13/2023]
Abstract
Super resolution microscopy was developed to overcome the Abbe diffraction limit, which effects conventional optical microscopy, in order to study the smaller components of biological systems. In recent years nanomaterials have been explored as luminescent probes for super resolution microscopy, as many have advantages over traditional fluorescent dye molecules. This review will summarize several different types of nanomaterial probes, covering quantum dots, carbon dots, and dye doped nanoparticles. For the purposes of this review the term "nanoparticle" will be limited to polymer-based, protein-based, and silica-based nanoparticles, including core-shell structured nanoparticles. Luminescent nanomaterials have shown promise as super-resolution probes, and continued research in this area will yield new advances in both materials science and biochemical microscopy at the nanometer scale.
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Affiliation(s)
- S Thompson
- Department of Chemistry and Biochemistry, Texas Tech University USA
| | - Dimitri Pappas
- Department of Chemistry and Biochemistry, Texas Tech University USA
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26
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Yang A, Courie H, Peterson V, Thompson S, Hafycz J, Jeanmonod R, Rammohan G, Stankewicz H, Hackett D, Jeanmonod D. 29 Bedside Point-of-Care Measurement of a Novel Biomarker SPLA2-IIA for Prediction of Sepsis: Midpoint Analysis. Ann Emerg Med 2020. [DOI: 10.1016/j.annemergmed.2020.09.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Rafie A, Jolly K, Darr A, Thompson S. Adult cavernous haemangioma of the vocal cords with a unique presentation of acute respiratory distress: a case report. Ann R Coll Surg Engl 2020; 102:e152-e154. [PMID: 32306741 PMCID: PMC7450425 DOI: 10.1308/rcsann.2020.0066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2020] [Indexed: 11/22/2022] Open
Abstract
Laryngeal haemangiomas can commonly be seen in children, and first-line treatment is usually propranolol. However, in adults, cavernous haemangioma of the vocal cord(s) is an extremely rare condition - with this being the only published adult case presenting with acute respiratory distress - the mainstay of treatment is surgical excision under microlaryngoscopy. Presentation in adults can be unpredictable, but primarily consists of hoarseness which can be associated with, dyspnoea, dysphagia, and haemoptysis - and in one documented case stenosis of the aero-digestive tract led to death. Due to these airway difficulties, surgery can often prove challenging. In this study, we explore the unusual case of a previously well 71-year-old gentleman presenting to the Emergency Department, with worsening shortness of breath as his primary complaint. Uniquely, in this case, an awake fibre-optic intubation was undertaken to manage the difficult airway and a microlaryngoscopy was performed. A 20x10x15mm lesion was excised, which had characteristics in keeping with a cavernous haemangioma on microscopic examination.
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Affiliation(s)
- A Rafie
- Shrewsbury and Telford Hospital NHS Trust, Shrewsbury, UK
| | - K Jolly
- Birmingham Children’s Hospital NHS Foundation Trust, Birmingham, UK
| | - A Darr
- New Cross Hospital, Wolverhampton, UK
| | - S Thompson
- Shrewsbury and Telford Hospital NHS Trust, Shrewsbury, UK
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28
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PB S, Meichner K, Thompson S, JM W. Eosinophilic Synovitis in a Horse following Methylprednisolone Acetate Injection in the Distal Tarsal Joints. Vet Comp Orthop Traumatol 2020. [DOI: 10.1055/s-0040-1714965] [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: 10/20/2022]
Affiliation(s)
- Sloan PB
- Clinical Sciences, Kansas State University, Manhattan, Kansas, United States
| | - K Meichner
- Department of Pathology, University of Georgia, Athens, Georgia, United States
| | - S Thompson
- Estrella Equine, Aiken, South Carolina, United States
| | - Williams JM
- College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States
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29
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Johnson RD, Ford DV, Broadhurst K, Cusworth L, Jones KH, Akbari A, Bedston S, Alrouh B, Doebler S, Lee A, Smart J, Thompson S, Trinder L, Griffiths LJ. Data Resource: population level family justice administrative data with opportunities for data linkage. Int J Popul Data Sci 2020; 5:1339. [PMID: 34233348 PMCID: PMC7473282 DOI: 10.23889/ijpds.v5i1.1339] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Although there has been considerable progress in the use of administrative data for applied health research, the family justice field lags behind. Better use of administrative data are essential to enhance understanding of how the family justice system is working, as well as the characteristics of, and outcomes for, children and families. The Family Justice Data Partnership (FJDP) supports this aim through analyses of core family justice and linked datasets in the SAIL Databank (Secure Anonymised Information Linkage). Cafcass Cymru provide expert advice for children involved in family court proceedings in Wales, ensuring decisions are made in the best interests of the child. We provide an overview of Cafcass Cymru data. We also describe and illustrate linkage to administrative datasets within SAIL. METHODS Cafcass Cymru data was transferred to SAIL using a standardised approach to provide de-identified data with Anonymised Linking Fields (ALF) for successfully matched records. Three cohorts were created: all individuals involved in family court applications; all individuals with an ALF allowing subsequent health data linkage; and all individuals with a Residential Anonymised Linking Field (RALF) enabling area-level deprivation analysis. RESULTS Cafcass Cymru application data are available for child protection matters (public law, range 2011-2019, n=12,745), and child arrangement disputes (private law, range 2005-2019, n=52,023). An 80% data linkage match rate was achieved. 40% had hospital admissions within two years pre or post application; 54% had emergency department attendances and 61% had outpatient appointments. Individuals were more likely to reside in deprived areas regardless of law type. CONCLUSION Cafcass Cymru data can be accessed through the SAIL Databank. The FJDP will continue to enhance research opportunities for all to better understand the family justice system, and outcomes for those involved, such as health and wellbeing for children and family members.
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Affiliation(s)
- RD Johnson
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - DV Ford
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - K Broadhurst
- Centre for Child & Family Justice Research, Lancaster University, Lancaster, LA1 4YW, UK
| | - L Cusworth
- Centre for Child & Family Justice Research, Lancaster University, Lancaster, LA1 4YW, UK
| | - KH Jones
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - A Akbari
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - S Bedston
- Centre for Child & Family Justice Research, Lancaster University, Lancaster, LA1 4YW, UK
| | - B Alrouh
- Centre for Child & Family Justice Research, Lancaster University, Lancaster, LA1 4YW, UK
| | - S Doebler
- Centre for Child & Family Justice Research, Lancaster University, Lancaster, LA1 4YW, UK
| | - A Lee
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - J Smart
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - S Thompson
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - L Trinder
- Law School, University of Exeter, Exeter, EX4 4RJ, UK
| | - LJ Griffiths
- Population Data Science, Swansea University Medical School, Swansea, SA2 8PP, UK
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30
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Ivanova DL, Kilgore A, Thompson S, Kedl R. The regulation of transcription factor T cell factor 1 (TCF1) in vaccine-elicited CD8+ T cells. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.169.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Our lab has developed a subunit vaccination regimen that induces a highly robust T cell response. These vaccine-elicited CD8+ T cells (Tvac) are phenotypically, functionally and metabolically distinct from infection-elicited CD8+ T cells (Tinf). In contrast to Tinf, almost all Tvac rapidly acquire a memory phenotype (CD127hi, KLRG1lo). This suggests that Tvac could be differentially transcriptionally programmed to commit to a memory, rather than effector, cell fate. The transcription factor TCF1 (encoded by tcf7) is essential for CD8+ T cell memory in response to infection. Since high TCF1 expression is also important for the generation of stem-like T cells with long-term survival capacity and anti-tumor properties, it is now recognized as a promising target for immunotherapies. However, little is known about how TCF1 is regulated in response to subunit vaccination. We find that, in striking contrast to Tinf, TCF1 expression is actually increased in Tvac after vaccination. As others have shown, we also find that increasing inflammation during vaccination by the addition of TLR9 agonist CpG reduces TCF1 expression in Tvac, skewing their memory phenotype towards the effector phenotype (CD127lo, KLRG1hi) and compromising their long-term memory. While the loss of TCF1 in this context has conventionally been ascribed to inflammatory receptors, utilizing reporter Nur77GFP mice, we also observe an altered duration and frequency of TCR triggering in the context of inflammation. Our data indicates a complex, previously unappreciated interplay between inflammatory and TCR-mediated signals in the regulation of TCF1.
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Affiliation(s)
| | | | | | - Ross Kedl
- 1University of Colorado Anschutz Medical Campus
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31
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Courcier EA, Pascual-Linaza AV, Arnold ME, McCormick CM, Corbett DM, O'Hagan MJH, Collins SF, Trimble NA, McGeown CF, McHugh GE, McBride KR, McNair J, Thompson S, Patterson IAP, Menzies FD. Evaluating the application of the dual path platform VetTB test for badgers (Meles meles) in the test and vaccinate or remove (TVR) wildlife research intervention project in Northern Ireland. Res Vet Sci 2020; 130:170-178. [PMID: 32197169 DOI: 10.1016/j.rvsc.2020.03.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 11/15/2022]
Abstract
European badgers (Meles meles) are accepted as a wildlife reservoir host for Mycobacterium bovis, which causes bovine tuberculosis (bTB) in the British Isles. The objective of this study was to evaluate the use of Dual Path Platform (DPP) VetTB test (Chembio Diagnostic Systems Inc., Medford, NY, USA) within a Test and Vaccinate or Remove (TVR) wildlife research intervention project. Blood samples were collected from 456 individual badgers, trapped in 2015 and 2016, and tested in the field with DPP VetTB test using whole blood. Additionally, whole blood and serum samples were taken to the laboratory for further DPP VetTB testing and for gamma interferon (IFN-γ) testing. Swabs were taken from the oropharynx and trachea and submitted for bacteriological culture as were swabs from wounds, if present. Field DPP VetTB test positive badgers were euthanised and underwent post-mortem examination and bTB confirmatory testing. The results demonstrated that the test performed as well in the field using whole blood as DPP Vet TB tests in the laboratory using sera or whole blood, and as well as other established tests for M. bovis. Visual assessment of the DPP VetTB test using serum under laboratory conditions showed a high degree of consistency between raters. Using a relative gold standard (parallel interpretation of IFN-γ assay and oropharyngeal/tracheal sample/culture), sensitivity estimates for the DPP VetTB test using sera and whole blood were 0.5 (95%CI 0.34-0.66) and 0.42 (95%CI 0.24-0.66), respectively. Specificity estimates were 0.95 (95%CI 0.93-0.97) for sera and 0.89 (95%CI 0.86-0.92) for whole blood. Parallel interpretation of Band 1 (MPB83) and Band 2 (CFP-10/ESAT-6) of the DPP VetTB test was not superior to interpretation of Band 1 only. The results give confidence in the reliability and reproducibility of the DPP VetTB test for badgers under field conditions and therefore it is considered appropriate for use in a badger bTB control campaign.
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Affiliation(s)
- E A Courcier
- Veterinary Epidemiology Unit, Department of Agriculture, Environment and Rural Affairs, Belfast BT4 3SB, Northern Ireland, UK.
| | - A V Pascual-Linaza
- Veterinary Epidemiology Unit, Department of Agriculture, Environment and Rural Affairs, Belfast BT4 3SB, Northern Ireland, UK
| | - M E Arnold
- Animal and Plant Health Agency Sutton Bonington, Sutton Bonington, Loughborough LE12 5RB, England, UK
| | - C M McCormick
- Veterinary Epidemiology Unit, Department of Agriculture, Environment and Rural Affairs, Belfast BT4 3SB, Northern Ireland, UK; Veterinary Sciences Division, Agri-Food and Biosciences Institute, Stormont, Belfast BT4 3SD, Northern Ireland, UK
| | - D M Corbett
- Veterinary Sciences Division, Agri-Food and Biosciences Institute, Stormont, Belfast BT4 3SD, Northern Ireland, UK
| | - M J H O'Hagan
- Veterinary Epidemiology Unit, Department of Agriculture, Environment and Rural Affairs, Belfast BT4 3SB, Northern Ireland, UK
| | - S F Collins
- TVR Field Implementation Unit, Department of Agriculture, Environment and Rural Affairs, Glenree House, Springhill Road, Newry BT35 6EF, Northern Ireland, UK
| | - N A Trimble
- TVR Field Implementation Unit, Department of Agriculture, Environment and Rural Affairs, Glenree House, Springhill Road, Newry BT35 6EF, Northern Ireland, UK
| | - C F McGeown
- TVR Field Implementation Unit, Department of Agriculture, Environment and Rural Affairs, Glenree House, Springhill Road, Newry BT35 6EF, Northern Ireland, UK
| | - G E McHugh
- TVR Field Implementation Unit, Department of Agriculture, Environment and Rural Affairs, Glenree House, Springhill Road, Newry BT35 6EF, Northern Ireland, UK
| | - K R McBride
- Veterinary Epidemiology Unit, Department of Agriculture, Environment and Rural Affairs, Belfast BT4 3SB, Northern Ireland, UK
| | - J McNair
- Veterinary Sciences Division, Agri-Food and Biosciences Institute, Stormont, Belfast BT4 3SD, Northern Ireland, UK
| | - S Thompson
- Veterinary Sciences Division, Agri-Food and Biosciences Institute, Stormont, Belfast BT4 3SD, Northern Ireland, UK
| | - I A P Patterson
- Veterinary Sciences Division, Agri-Food and Biosciences Institute, Stormont, Belfast BT4 3SD, Northern Ireland, UK
| | - F D Menzies
- Veterinary Epidemiology Unit, Department of Agriculture, Environment and Rural Affairs, Belfast BT4 3SB, Northern Ireland, UK
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Thompson S, Pappas D. Core Size does not Affect Blinking Behavior of Dye-Doped Ag@SiO 2 Core-Shell Nanoparticles for Super-Resolution Microscopy. RSC Adv 2020; 10:8735-8743. [PMID: 35356036 PMCID: PMC8963217 DOI: 10.1039/c9ra10421f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Dye-doped nanoparticles have been investigated as bright, luminescent labels for super-resolution microscopy via localization methods. One key factor in super-resolution is the size of the luminescent label, which in some cases results in a frame shift between the label target and the label itself. Ag@SiO2 core–shell nanoparticles, doped with organic fluorophores, have shown promise as super-resolution labels. One key aspect of these nanoparticles is that they blink under certain conditions, allowing super-resolution localization with a single excitation source in aqueous solution. In this work, we investigated the effects of both the Ag core and the silica (SiO2) shell on the self-blinking properties of these nanoparticles. Both core size and shell thickness were manipulated by altering the reaction time to determine core and shell effects on photoblinking. Size and shell thickness were investigated individually under both dry and hydrated conditions and were then doped with a 1 mM solution of Rhodamine 110 for analysis. We observed that the cores themselves are weakly luminescent and are responsible for the blinking observed in the fully-synthesized metal-enhanced fluorescence nanoparticles. There was no statistically significant difference in photoblinking behavior—both intensity and duty cycle—with decreasing core size. This observation was used to synthesize smaller nanoparticles ranging from approximately 93 nm to 110 nm as measured using dynamic light scattering. The blinking particles were localized via super-resolution microscopy and show single particle self-blinking behavior. As the core size did not impact blinking performance or intensity, the nanoparticles can instead be tuned for optimal size without sacrificing luminescence properties. Dye-doped nanoparticles have been investigated as bright, luminescent labels for super-resolution microscopy via localization methods.![]()
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Affiliation(s)
- S Thompson
- Texas Tech University Department of Chemistry and Biochemistry, Lubbock, TX, USA
| | - Dimitri Pappas
- Texas Tech University Department of Chemistry and Biochemistry, Lubbock, TX, USA
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Schneider C, Thompson S, Totz J, Song Y, Allam M, Sodergren MH, Desjardins AE, Barratt D, Ourselin S, Gurusamy K, Stoyanov D, Clarkson MJ, Hawkes DJ, Davidson BR. Comparison of manual and semi-automatic registration in augmented reality image-guided liver surgery: a clinical feasibility study. Surg Endosc 2020; 34:4702-4711. [PMID: 32780240 PMCID: PMC7524854 DOI: 10.1007/s00464-020-07807-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 02/22/2020] [Accepted: 07/10/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND The laparoscopic approach to liver resection may reduce morbidity and hospital stay. However, uptake has been slow due to concerns about patient safety and oncological radicality. Image guidance systems may improve patient safety by enabling 3D visualisation of critical intra- and extrahepatic structures. Current systems suffer from non-intuitive visualisation and a complicated setup process. A novel image guidance system (SmartLiver), offering augmented reality visualisation and semi-automatic registration has been developed to address these issues. A clinical feasibility study evaluated the performance and usability of SmartLiver with either manual or semi-automatic registration. METHODS Intraoperative image guidance data were recorded and analysed in patients undergoing laparoscopic liver resection or cancer staging. Stereoscopic surface reconstruction and iterative closest point matching facilitated semi-automatic registration. The primary endpoint was defined as successful registration as determined by the operating surgeon. Secondary endpoints were system usability as assessed by a surgeon questionnaire and comparison of manual vs. semi-automatic registration accuracy. Since SmartLiver is still in development no attempt was made to evaluate its impact on perioperative outcomes. RESULTS The primary endpoint was achieved in 16 out of 18 patients. Initially semi-automatic registration failed because the IGS could not distinguish the liver surface from surrounding structures. Implementation of a deep learning algorithm enabled the IGS to overcome this issue and facilitate semi-automatic registration. Mean registration accuracy was 10.9 ± 4.2 mm (manual) vs. 13.9 ± 4.4 mm (semi-automatic) (Mean difference - 3 mm; p = 0.158). Surgeon feedback was positive about IGS handling and improved intraoperative orientation but also highlighted the need for a simpler setup process and better integration with laparoscopic ultrasound. CONCLUSION The technical feasibility of using SmartLiver intraoperatively has been demonstrated. With further improvements semi-automatic registration may enhance user friendliness and workflow of SmartLiver. Manual and semi-automatic registration accuracy were comparable but evaluation on a larger patient cohort is required to confirm these findings.
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Affiliation(s)
- C. Schneider
- Division of Surgery & Interventional Science, Royal Free Campus, University College London, Pond Street, London, NW3 2QG UK
| | - S. Thompson
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - J. Totz
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - Y. Song
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - M. Allam
- Division of Surgery & Interventional Science, Royal Free Campus, University College London, Pond Street, London, NW3 2QG UK
| | - M. H. Sodergren
- Centre for Medical Image Computing (CMIC), University College London, London, UK
| | - A. E. Desjardins
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - D. Barratt
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - S. Ourselin
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - K. Gurusamy
- Division of Surgery & Interventional Science, Royal Free Campus, University College London, Pond Street, London, NW3 2QG UK ,Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Department of Hepatopancreatobiliary and Liver Transplant Surgery, Royal Free Hospital, London, UK
| | - D. Stoyanov
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Computer Science, University College London, London, UK
| | - M. J. Clarkson
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - D. J. Hawkes
- Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Centre for Medical Image Computing (CMIC), University College London, London, UK ,Department of Medical Physics and Bioengineering, University College London, London, UK
| | - B. R. Davidson
- Division of Surgery & Interventional Science, Royal Free Campus, University College London, Pond Street, London, NW3 2QG UK ,Wellcome / EPSRC Centre for Surgical and Interventional Sciences (WEISS), University College London, London, UK ,Department of Hepatopancreatobiliary and Liver Transplant Surgery, Royal Free Hospital, London, UK
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Brett DJ, Aguiar P, Brandon NP, Coop I, Dueck J, Galloway RC, Grande O, Hayes GW, Lillie K, Mellors C, Thompson S, Tilley R, Wood T. Operational Experience of an IT-SOFC / Battery Hybrid System for Automotive Applications. ACTA ACUST UNITED AC 2019. [DOI: 10.1149/1.2729080] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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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Skuce R, Breadon E, Allen A, Milne G, McCormick C, Hughes C, Rutherford D, Smith G, Thompson S, Graham J, Harwood R, Byrne A. Longitudinal dynamics of herd-level Mycobacterium bovis MLVA type surveillance in cattle in Northern Ireland 2003-2016. Infect Genet Evol 2019; 79:104131. [PMID: 31786341 DOI: 10.1016/j.meegid.2019.104131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/28/2019] [Accepted: 11/27/2019] [Indexed: 02/02/2023]
Abstract
Investigating genetically-structured diversity in pathogen populations over time is important to better understand disease maintenance and spread. Herd-level surveillance of Mycobacterium bovis genotypes (multi-locus VNTR analysis types, MLVA types) from all culture-confirmed bovine tuberculosis (TB) herd cases was undertaken in Northern Ireland (NI), generating an unparalleled, longitudinal, population-level 14-year survey for this pathogen. Across this population, 295 genetically-distinct M. bovis MLVA types were identified in the 19,717 M. bovis isolates surveyed. Of these, the most frequent was MLVA type 002 (23.0%); 151 MLVA types were represented more than once, in groups ranging from 2 to 4438 isolates. Only 23 MLVA types were isolated in all 14 years. Investigating inter-annual frequency of M. bovis MLVA types, examples of statistically-significant expansions (MLVA types 002, 004, 006, 009 and 027), contractions (MLVA types 001, 007 and 011) and maintenance (MLVA types 003 and 005) were disclosed, during a period of fluctuating bovine TB herd-level incidence at the NI scale. The fixed period frequency distribution of MLVA types remained highly right-skewed. Novel VNTR copy number variant MLVA types (N = 242; an average of 17 per annum) were identified throughout the survey. The MLVA type distribution in the landscape was not random; MLVA types showed statistically-significant geographical localization and strong spatial associations with Divisional Veterinary Office (DVO) regions. There was also evidence of differential risk of particular MLVA types across breeds (Holstein/Friesian vs. other), age-class, and sex and some evidence of an association between the number of animals testing positive for bovine TB during the disclosing test and particular MLVA types, although there was substantial variation.
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Affiliation(s)
- R Skuce
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK; School of Biological Sciences, Queen's University Belfast, Belfast BT7 1NN, UK.
| | - E Breadon
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK
| | - A Allen
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK
| | - G Milne
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK
| | - C McCormick
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK; Veterinary Service and Animal Health Group, Department of Agriculture, Environment and Rural Affairs, Dundonald House, Stormont, Belfast BT4 3SB, UK
| | - C Hughes
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK
| | - D Rutherford
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK; Faculty of Electrical Engineering, Czech Technical University, Prague, Czech Republic (⁎)current address
| | - G Smith
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK
| | - S Thompson
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK
| | - J Graham
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK
| | - R Harwood
- Veterinary Service and Animal Health Group, Department of Agriculture, Environment and Rural Affairs, Dundonald House, Stormont, Belfast BT4 3SB, UK
| | - A Byrne
- Veterinary Sciences Division, Agri-food and Biosciences Institute (AFBI), Stoney Road, Stormont, Belfast BT4 3SD, UK; School of Biological Sciences, Queen's University Belfast, Belfast BT7 1NN, UK; One-Health Unit, Surveillance, Animal By-Products and TSEs (SAT), Division Department of Agriculture, Food and Marine (DAFM), Agriculture House, Dublin 2, Ireland
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Abstract
BACKGROUND The Secure Anonymised Information Linkage (SAIL) Databank is a national data safe haven of de identified datasets principally about the population of Wales, made available in anonymised form to researchers across the world. It was established to enable the vast arrays of data collected about individuals in the course of health and other public service delivery to be made available to answer important questions that could not otherwise be addressed without prohibitive effort. The SAIL Databank is the bedrock of other funded centres relying on the data for research. APPROACH SAIL is a data repository surrounded by a suite of physical, technical and procedural control measures embodying a proportionate privacy-by-design governance model, informed by public engagement, to safeguard the data and facilitate data utility. SAIL operates on the UK Secure Research Platform (SeRP), which is a customisable technology and analysis platform. Researchers access anonymised data via this secure research environment, from which results can be released following scrutiny for disclosure risk. SAIL data are being used in multiple research areas to evaluate the impact of health and social exposures and policy interventions. DISCUSSION Lessons learned and their applications include: managing evolving legislative and regulatory requirements; employing multiple, tiered security mechanisms; working hard to increase analytical capacity efficiency; and developing a multi-faceted programme of public engagement. Further work includes: incorporating new data types; enabling alternative means of data access; and developing further efficiencies across our operations. CONCLUSION SAIL represents an ongoing programme of work to develop and maintain an extensive, whole population data resource for research. Its privacy-by-design model and UK SeRP technology have received international acclaim, and we continually endeavour to demonstrate trustworthiness to support data provider assurance and public acceptability in data use. We strive for further improvement and continue a mutual learning process with our contemporaries in this rapidly developing field.
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Affiliation(s)
- KH Jones
- Population Data Science, Swansea University Medical School, Singleton Park, Swansea SA2 8PP
| | - DV Ford
- Population Data Science, Swansea University Medical School, Singleton Park, Swansea SA2 8PP
| | - S Thompson
- Population Data Science, Swansea University Medical School, Singleton Park, Swansea SA2 8PP
| | - RA Lyons
- Population Data Science, Swansea University Medical School, Singleton Park, Swansea SA2 8PP
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Silbernagel K, Jechorek R, Carver C, Barbour WM, Mrozinski P, Albert A, Andaloro B, Anderson G, Beacorn F, Brooks R, Carson M, Crossfield D, Eliasberg S, Farmer D, Frantzeskakis C, Gasses T, Gatesy T, Hall G, Hanson P, Heddaeus K, Hermann K, Hutchins J, Jenkins J, Johnson F, Johnson J, Kawalek M, Kelly L, Koschmann C, Lannon P, Lester D, Manner K, Martin J, Maselli M, McGovern B, Mohnke F, Moon B, Murray L, Pace R, Richards J, Robeson S, Rodgers D, Rosario G, Saunders C, Shaw C, Dana Shell J, Sloan E, Thompson S, Vialpando M, Voermans R, Watts K, Wieczorek K, Wilson K, Yeh H, Zamora D. Evaluation of the BAX® System for Detection of Salmonella in Selected Foods: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/86.6.1149] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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]
Abstract
Abstract
A multilaboratory study was conducted to compare the automated BAX® System to the standard cultural methods for detection of Salmonella in selected foods. Five food types—frankfurters, raw ground beef, mozzarella cheese, raw frozen tilapia fish, and orange juice—at 3 inoculation levels, were analyzed by each method. A sixth food type, raw ground chicken, was tested using 3 naturally contaminated lots. A total of 16 laboratories representing government and industry participated. In this study, 1386 samples were analyzed, of which 1188 were paired samples and 198 were unpaired samples. Of the 1188 paired samples, 461 were positive by both methods and 404 were negative by both methods. Thirty-seven samples were positive by the BAX System but negative by the standard reference method, and 11 samples were positive by standard cultural method and negative by the BAX System. Of the 198 unpaired samples, 106 were positive by the BAX System and 60 were positive by the standard cultural method. A Chi square analysis of each of the 6 food types, at the 3 inoculation levels tested, was performed. For all foods, the BAX System demonstrated results comparable to those of the standard reference methods based on the Chi square results.
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Affiliation(s)
| | | | - Charles Carver
- rtech laboratories, PO Box 64101, St. Paul, MN 55164-0101
| | - W Mark Barbour
- DuPont Qualicon, 3531 Silverside Rd, Bedford Building, Wilmington, DE 19810
| | - Peter Mrozinski
- DuPont Qualicon, 3531 Silverside Rd, Bedford Building, Wilmington, DE 19810
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Chakraborty C, Thompson S, Lyons VJ, Snoeyink C, Pappas D. Modulation and study of photoblinking behavior in dye doped silver-silica core-shell nanoparticles for localization super-resolution microscopy. Nanotechnology 2019; 30:455704. [PMID: 31357181 PMCID: PMC7278086 DOI: 10.1088/1361-6528/ab368d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Blinking of fluorescent nanoparticles is a compelling phenomenon with widely debated mechanisms. The ability to inhibit or control blinking is important for applications in the field of optical, semiconductor and fluorescent imaging. Self-blinking nanomaterials are also attractive labels for localization-based super-resolution microscopy. In this work, we have synthesized silver core silica nanoparticles (Ag@SiO2) doped with Rhodamine 110 and studied the parameters that affect blinking. We found that under nitrogen rich conditions the nanoparticles shifted towards higher duty cycles. Also, it was found that hydrated nanoparticles showed a less drastic response to nitrogen rich conditions as compared to dried nanoparticles, indicating that surrounding matrix played a role in the response of nanoparticles to molecular oxygen. Further, the blinking is not a multi-body phenomena, super-resolution localization combined with intensity histogram analysis confirmed that single particles are emitting.
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Affiliation(s)
- Chumki Chakraborty
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, United States of America
- Both authors contributed equally to this work
| | - S Thompson
- Department of Chemistry, Texas Tech University, Lubbock, TX 79409, United States of America
- Both authors contributed equally to this work
| | - Veronica J Lyons
- Department of Chemistry, Texas Tech University, Lubbock, TX 79409, United States of America
| | - Craig Snoeyink
- Department of Mechanical Engineering, University at Buffalo, Buffalo, NY 14260, United States of America
| | - Dimitri Pappas
- Department of Chemistry, Texas Tech University, Lubbock, TX 79409, United States of America
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Mileshkin L, Barnes E, Moore K, Gebski V, King M, Narayan K, Kolodziej I, Sjoquist K, Fyles A, Small W, Gaffney D, Quinn M, Andrews J, Thompson S, Huh W, Carlson M, Disilvestro P, Rischin D, Stockler M, Monk B. Disparities starting adjuvant chemotherapy for locally advanced cervix cancer in the international, academic, randomised, phase III OUTBACK trial (ANZGOG 0902, RTOG 1174, NRG 0274). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz250.060] [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: 11/13/2022] Open
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Osman M, Zaidi D, Kurzawa J, Bialy L, Featherstone R, Schick-Makaroff K, Thompson S, Klarenbach S, Bello A. SUN-234 Electronic consultations (eConsult) to enhance access to nephrologists care: what are the barriers and facilitators to implementation? Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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McCaughan E, O'Connor S, Flannagan C, Maguire R, Connaghan J, Bamidele O, Ellis S, Steele M, Wittmann D, Thompson S, Jain S, Kirby M, Brady N, Parahoo K. 050 Maximising Sexual Wellbeing after diagnosis of Prostate Cancer. Developing and Testing Support Resources: A Global Approach. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.061] [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: 10/27/2022]
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Thompson S, Mugu V, Fleming C, Yohanathan L, Truty M, Kendrick M, Andrews J. 04:03 PM Abstract No. 80 Technical success, efficacy, and safety of portomesenteric venous intervention following non-transplant hepatobiliary or pancreatic surgery. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.123] [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: 10/27/2022] Open
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Thompson S, Chan H, Thorne L, Watkins L, Toma A. TM3-4 The effect of acetazolamide on intracranial pressure: primary study with prolonged continuous intracranial pressure monitoring. J Neurol Psychiatry 2019. [DOI: 10.1136/jnnp-2019-abn.50] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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
ObjectivesAcetazolamide has frequently been used as a first-line treatment for idiopathic Intracranial Hypertension (IIH) and other disorders which lead to a non-acute rise in intracranial pressure (ICP). The effect of acetazolamide has been observed through lumbar puncture, however the effect of acetazolamide on ICP has not been studied in continuous ICP measurement.DesignA retrospective study of a prospectively built ICP databaseSubjectsAll patients with continuous ICP monitoring demonstrating 24 hours on and 24 hours off acetazolamide were included in the study.MethodsPatients median ICP and median pulse amplitude over 24 hour monitoring period on and off Diamox was assessed.Results12 patients (9F, 3M) underwent ICP monitoring with data collected during the same admission. 8 patients had IIH, 1 Chiari Malformation, 3 new diagnostic ICP procedures. 10 patients saw a reduction in ICP while on acetazolamide. Overall, patients experienced a Median reduction of 1.14 mmHg (Mean 1.16 mmHg, Range 4.24 to −4.445 mmHg). Patients (n9) who were on ≥1 g of acetazolamide per day experienced a median reduction in ICP of 1.595 mmHg (Mean 1.91 mmHg, Range 4.24–0.5 mmHg).ConclusionsOur data suggests acetazolamide can reduce ICP quickly following commencement, however this reduction was relatively small. The effect seems greater with a higher dose. Larger numbers of patients are required to gain a greater understanding into the significance of acetazolamide on ICP, particularly the affect at larger doses.
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Craven CL, D’Antona L, Thompson S, Ramos J, Sennik S, Watkins LD, Toma AK. P102 Shunting slit ventricles: a comparison of the parieto-occipital vs frontal approach. J Neurol Psychiatry 2019. [DOI: 10.1136/jnnp-2019-abn.159] [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
ObjectivesSlit ventricles can be a challenging target during shunt catheter insertion. Traditionally, the frontal approach has been considered optimal. At this centre, routine use of electromagnetic (EM) stereotatic guidance (StealthTM, Medtronic) has enabled a parieto-occipital burr hole approach to the frontal horns. We compare shunt placement and revisions required for patients with slit ventricles who had shunts inserted via a parieto-occipital (P-O) approach vs. frontal shunt.DesignRetrospective cohort.SubjectsPatients with slit ventricles and a ventricular shunt inserted using EM guidance between 2012–2018.MethodsSlit ventricles were defined as <3 mm (widest). Outcome measures included placement accuary and survival using Kaplan-Meier curve.Results82 patients (77F:5M) aged 34.9±10.8 years (mean ±SD) had shunts inserted for IIH (n=63), chiari/syrinx (n=8), congenital hydrocephalus (n=10), pseudomeningocoele (n=1). 35 had primary P-O shunts and 46 had frontal shunts. Overall, 94% of cases had the catheter tip sitting in the frontal horn. The P-O approach was just as accurate as the frontal approach. Eight P-O shunts and 9 frontal shunts required revision over a 60 month periods. There was no significant different in shunt survival between the two approaches (p=0.99).ConclusionsEM guided placement has enabled the P-O approach to be as safe and with equivalent survival to frontal approach. The accuracy of shunt placement between the two approaches was equivocal.
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Gwynne K, Gwynn J, Finlayson H, Hamilton S, Lawrence M, MacNiven R, Neubeck L, Rambaldini B, Rodrigues R, Taylor K, Thompson S, Freedman B. Atrial Fibrillation and Indigenous Australians: A Way Forward for Timely and Effective Screening and Treatment. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Anderson N, Marshall MS, Stirling J, Wright J, MacCormick J, Artrip J, Hamer M, Thompson S, Kennedy A, Finucane K, Gentles T. A Designated Single Ventricle Group Improves Outcomes for Infants with Single Ventricle Physiology. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Schaefer A, Bench C, Bollum R, Cook N, Crow G, Maharjan D, Ominski K, Rodas-González A, Thompson S, von Gaza H. PSXVII-1 Real time determination of metabolic efficiency in cattle with infrared thermography. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.312] [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: 11/14/2022] Open
Affiliation(s)
- A Schaefer
- University of Alberta,Lacombe, AB, Canada
| | - C Bench
- University of Alberta,Edmonton, AB, Canada
| | - R Bollum
- R and R Acres,Airdrie, AB, Canada
| | - N Cook
- Alberta Agriculture,Edmonton, AB, Canada
| | - G Crow
- University of Manitoba, Winnipeg, MB, Canada
| | - D Maharjan
- University of Manitoba, Winnipeg, MB, Canada
| | - K Ominski
- University of Manitoba, Winnipeg, MB, Canada
| | | | - S Thompson
- University of Saskatchewan,Saskatoon, SK, Canada
| | - H von Gaza
- HVG Software Solutions,Edmonton, AB, Canada
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Thompson S, Schaefer AL, Crow GH, Basarab J, Colyn J, Ominski K. Relationship between residual feed intake and radiated heat loss using infrared thermography in young beef bulls. J Therm Biol 2018; 78:304-311. [PMID: 30509652 DOI: 10.1016/j.jtherbio.2018.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/18/2018] [Accepted: 10/12/2018] [Indexed: 10/28/2022]
Abstract
Residual feed intake (RFI) has been used to select metabolically efficient cattle in beef breeding programs, particularly for sire selection. Adoption of genetic selection using RFI has been limited due to the cost and difficulty of measuring individual feed intake. An alternative method of predicting RFI is to measure radiated heat loss using infrared thermography (IRT) as previous studies have shown promise using this technique to predict metabolic efficiency in mature cows, heifers, and growing bulls. The objective of this study was to explore use of IRT to predict RFI in growing beef bulls. Sixty bulls in each of two years were fed either a forage-based or a grain-based ration. Eye (Ey) and cheek (Ck) surface temperatures were measured using infrared images of the head collected on 16 and 14 sample days in Years 1 and 2, respectively, using a FLIR S60 camera. In Year 2, infrared images were collected continuously using a within-pen FLIR A310 camera system. Bulls were grouped into low, medium and high classes based on ± 0.5 standard deviations of backfat adjusted residual feed intake (RFIFat); RFIFat values ranged from - 2.27 to + 2.61 kg DM day-1 (mean=0.0; SD=0.61). Sample day Ey and Ck temperatures were pooled and an average temperature was calculated for individual bulls. Average Ey and Ck temperatures measured using the FLIR S60 and the within-pen camera did not differ significantly across low, medium and high RFI groups (P > 0.05). Temperature deviations associated with extremes in ambient temperature (placing animals outside their thermoneutral zone) or underlying subclinical health problems could bias results in IRT measurements and RFI ranking. Standardization of IRT data and the conditions during measurement is necessary to more accurately assess its potential use to predict RFI.
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Affiliation(s)
- S Thompson
- Department of Animal Science & National Centre for Livestock and the Environment (NCLE), University of Manitoba, Winnipeg, MB, Canada R3T 2N2.
| | - A L Schaefer
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5
| | - G H Crow
- Department of Animal Science & National Centre for Livestock and the Environment (NCLE), University of Manitoba, Winnipeg, MB, Canada R3T 2N2
| | - J Basarab
- Alberta Agriculture and Forestry, Lacombe Research Centre, Lacombe, AB, Canada T4L 1W1
| | - J Colyn
- Agriculture and Agri-Food Canada, Lacombe Research Centre, Lacombe, AB, Canada T4L 1W1
| | - K Ominski
- Department of Animal Science & National Centre for Livestock and the Environment (NCLE), University of Manitoba, Winnipeg, MB, Canada R3T 2N2
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Schaefer AL, Ominski K, Thompson S, Crow G, Bench C, Colyn J, Rodas-Gonzalez A, Maharjan D, Bollum R, Cook NJ, Basarab J, von Gaza H. Energy utilization in cattle with steady state and non-steady state methods: the importance of thermal neutrality. Heliyon 2018; 4:e00843. [PMID: 30302415 PMCID: PMC6174544 DOI: 10.1016/j.heliyon.2018.e00843] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/28/2018] [Accepted: 10/02/2018] [Indexed: 11/16/2022] Open
Abstract
The efficiency by which animals utilize dietary energy is fundamental to the cost of production for protein of animal origin and to the carbon footprint an animal industry has. Hence, the development of cost effective methodology for determining these measurements of efficiency is important. The objective of the present study was to investigate the use of infrared thermography in a rapid, non-steady state method for measuring energy loss in cattle. Data from 241 yearling bulls and steers as well as heifers and mature cows are presented. Infrared images were collected following a 24h feed withdrawal period. The infrared thermal response in these animals was significantly ranked (P < 0.03) with conventional measurements of feed efficiency using residual feed intake values for animals demonstrated to be within a thermal neutral zone. When animals were not within a thermal neutral zone there was no significant ranking. The data suggests that the use of a non-steady state approach using infrared thermography for identifying metabolic efficiency in animals may be a more rapid and less expensive method for identifying differences in energy utilization. The data also demonstrates the importance of maintaining thermal neutrality when measuring metabolic efficiency irrespective of the methodology.
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Affiliation(s)
- A L Schaefer
- Dept. AFNS, University of Alberta, Edmonton, Canada
| | - K Ominski
- Dept. Animal Science, University of Manitoba, Winnipeg, Canada
| | - S Thompson
- Dept. Animal Science, University of Manitoba, Winnipeg, Canada
| | - G Crow
- Dept. Animal Science, University of Manitoba, Winnipeg, Canada
| | - C Bench
- Dept. AFNS, University of Alberta, Edmonton, Canada
| | - J Colyn
- Agriculture and Agri-Food Canada, Lacombe, AB, Canada
| | | | - D Maharjan
- Dept. Animal Science, University of Manitoba, Winnipeg, Canada
| | - R Bollum
- RandR Acres Sire Breeder, Airdrie, AB, Canada
| | - N J Cook
- Alberta Agriculture, Lacombe, AB, Canada
| | - J Basarab
- Alberta Agriculture, Lacombe, AB, Canada
| | - H von Gaza
- HVG Software Solutions, Edmonton, Canada
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Thompson S, Pappas D. A fluorescence toolbox: A review of investigation of electrophoretic separations, process, and interfaces. Electrophoresis 2018; 40:606-615. [DOI: 10.1002/elps.201800310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/06/2018] [Accepted: 09/06/2018] [Indexed: 01/23/2023]
Affiliation(s)
- S. Thompson
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock TX USA
| | - Dimitri Pappas
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock TX USA
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