34 results on '"Lemon J"'
Search Results
2. Locator/ID Separation Protocol (LISP) Generic Protocol Extension
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Lemon, J., additional, Agarwal, P., additional, Lewis, D., additional, and Smith, M., additional
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- 2022
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3. The effect of phosphatidylinositol-3 kinase inhibition on matrix metalloproteinase-9 and reactive oxygen species release from chronic obstructive pulmonary disease neutrophils
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Gupta, V., Khan, A., Higham, A., Lemon, J., Sriskantharajah, S., Amour, A., Hessel, E.M., Southworth, T., and Singh, D.
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- 2016
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4. Nicodemus. I: New Testament
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Furey, Constance M., Gemeinhardt, Peter, LeMon, Joel Marcus, Römer, Thomas C, Schröter, Jens, Walfish, Barry Dov, Ziolkowski, Eric, Furey, C M ( Constance M. ), Gemeinhardt, P ( Peter ), LeMon, J M ( Joel Marcus ), Römer, T C ( Thomas C ), Schröter, J ( Jens ), Walfish, B D ( Barry Dov ), Ziolkowski, E ( Eric ), Frey, Jörg, Furey, Constance M., Gemeinhardt, Peter, LeMon, Joel Marcus, Römer, Thomas C, Schröter, Jens, Walfish, Barry Dov, Ziolkowski, Eric, Furey, C M ( Constance M. ), Gemeinhardt, P ( Peter ), LeMon, J M ( Joel Marcus ), Römer, T C ( Thomas C ), Schröter, J ( Jens ), Walfish, B D ( Barry Dov ), Ziolkowski, E ( Eric ), and Frey, Jörg
- Published
- 2023
5. Art. Nemuel
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Furey, Constanze M, Gemeinhardt, Peter, LeMon, Joel, Römer, Thomas, Schröter, Jens, Walfish, Barry Dov, Ziolkowsky, Eric, Furey, C M ( Constanze M ), Gemeinhardt, P ( Peter ), LeMon, J ( Joel ), Römer, T ( Thomas ), Schröter, J ( Jens ), Walfish, B D ( Barry Dov ), Ziolkowsky, E ( Eric ), Hopf, Matthias; https://orcid.org/0000-0002-9183-7740, Furey, Constanze M, Gemeinhardt, Peter, LeMon, Joel, Römer, Thomas, Schröter, Jens, Walfish, Barry Dov, Ziolkowsky, Eric, Furey, C M ( Constanze M ), Gemeinhardt, P ( Peter ), LeMon, J ( Joel ), Römer, T ( Thomas ), Schröter, J ( Jens ), Walfish, B D ( Barry Dov ), Ziolkowsky, E ( Eric ), and Hopf, Matthias; https://orcid.org/0000-0002-9183-7740
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- 2023
6. A multi-ingredient dietary supplement abolishes large-scale brain cell loss, improves sensory function, and prevents neuronal atrophy in aging mice
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Lemon, J. A., Aksenov, V., Samigullina, R., Aksenov, S., Rodgers, W. H., Rollo, C. D., and Boreham, D. R.
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- 2016
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7. Identification of antigenic epitopes on the F and G glycoproteins of bovine respiratory syncytial virus and in vitro assessment of their synthetic peptide vaccine potential
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Lemon, J., primary, Douglas, A., additional, Power, U., additional, and McMenamy, MJ., additional
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- 2021
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8. FinFET with Contact over Active-Gate for 5G Ultra-Wideband Applications
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Razavieh, A., primary, Mahajan, V., additional, Oo, W. L., additional, Cimino, S., additional, Khokale, S. V., additional, Nagahiro, K., additional, Pantisano, L., additional, Ethirajan, T., additional, Lemon, J., additional, Gu, M., additional, Chen, Y., additional, Wang, H. T., additional, and Lee, T. H., additional
- Published
- 2020
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9. Treatment with Ataluren for Duchene Muscular Dystrophy
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Mercuri, E, Muntoni, F, Osorio, An, Tulinius, M, Buccella, F, Morgenroth, Lp, Gordish-Dressman, H, Jiang, J, Trifillis, P, Zhu, J, Kristensen, A, Santos, Cl, Henricson, Ek, Mcdonald, Cm, Desguerre, I, Bernert, G, Gosk-Tomek, M, Ille, A, Kellersmann, A, Weiss, S, Pilshofer, V, Balintovà, Z, Danhofer, P, Fabulovà, P, Jurıkovà, L, Fuchsovà, P, Haberlovà, J, Laffargue, F, Sarret, C, Pontier, B, Bellance, R, Sarrazin, E, Sabouraud, P, Magot, A, Mercier, S, Péréon, Y, Cuisset, J-M, Coopman-Degryse, S, Enaud, E, Jacquemont, M-L, Perville, A, Renouil, M, Trommsdorff, V, Verheulpen, D, Fontaine-Carbonnel, S, Vuillerot, C, Peudenier, S, Ropars, J, Audic, F, Chabrol, B, Chabrier, S, Gousse, G, Lagrue, E, Aragon, K, Barnerias, C, Brande, Lv, De Lucia, S, Gidaro, T, Seferian, A, Servais, L, Laugel, V, Espil-Taris, C, Mecili, H, Raffo, E, Ragot-Mandry, S, Borrell, S, Kirschner, J, Gangfuss, A, Henrich, M, Kolbel, H, Schara, U, Sponemann, N, Temme, E, Seeger, J, Hirsch, A, Denecke, J, Johannsen, J, Neu, A, Osinski, D, Rugner, S, Schussler, S, Trollmann, R, Kaindl, A, Schneider, Jb, Stoltenburg, C, Weiss, C, Schreiber, G, Hahn, A, Grzybowski, M, Pavlidou, E, Pavlou, E, Dobner, S, Liptai, Z, Dor, T, Brogna, C, Catteruccia, M, D’Amico, A, Pane, E, Bello, L, Pegoraro, E, Semplicini, C, Albamonte, E, Baranello, G, Comi, G, Govoni, A, Lerario, A, Magri, F, Masson, R, Mauri, E, Sansone, V, Brusa, C, Mongini, T, Ricci, F, Vacchetti, M, Bruno, C, Paniucci, C, Pedemonte, M, Giannotta, M, Pini, A, Messina, S, Sframeli, M, Vita, Gl, Vita, G, Ruggiero, L, Santoro, L, Craiu, D, Motoescu, C, Sandu, C, Teleanu, R, Vasile, D, Hughes, I, Childs, A-M, Alhaswani, Z, Roper, H, Parasuraman, D, Degoede, C, Gowda, V, Manzur, A, Munot, P, Sarkokzy, A, Charlesworth, C, Lemon, J, Turner, L, Spinty, S, Dubrovsky, A, Kornberg, A, Ryan, M, Webster, R, Biggar, Wd, Mcadam, Lc, Mah, Jh, Kolski, H, Vishwanathan, V, Chidambaranathan, S, Nevo, Y, Gorni, K, Carlo, J, Abresch, Rt, Joyce, Nc, Cnaan, A, Leshner, R, Tesi-Rocha, C, Thangarajh, M, Duong, T, Clemens, Pr, Abdel-Hamid, H, Connolly, Am, Pestronk, A, Teasley, J, Harper, A, Bertorini, Te, Kuntz, N, Driscoll, S, Day, Jw, Karachunski, P, and Lotze, T.
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safety ,medicine.medical_specialty ,nonsense mutation Duchenne muscular dystrophy ,Duchenne muscular dystrophy ,Neurosurgery ,STRIDE ,effectiveness ,Duchenne Muscular Dystrophy ,Pediatrics ,Dystrophin ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Child Development ,STRIDE Registry ,International database ,Internal medicine ,medicine ,Humans ,In patient ,Registries ,Child ,030304 developmental biology ,Pediatric ,0303 health sciences ,Brain Diseases ,Oxadiazoles ,business.industry ,Health Policy ,Disease progression ,Infant ,ataluren ,medicine.disease ,Ataluren ,Muscular Dystrophy, Duchenne ,Treatment Outcome ,chemistry ,Neurology ,Muscle Disorders ,Codon, Nonsense ,Neuromuscular ,Propensity score matching ,dystrophin ,Nervous System Diseases ,business ,030217 neurology & neurosurgery ,Natural history study ,Research Article - Abstract
Aim: Strategic Targeting of Registries and International Database of Excellence (STRIDE) is an ongoing, multicenter registry providing real-world evidence regarding ataluren use in patients with nonsense mutation Duchenne muscular dystrophy (nmDMD). We examined the effectiveness of ataluren + standard of care (SoC) in the registry versus SoC alone in the Cooperative International Neuromuscular Research Group (CINRG) Duchenne Natural History Study (DNHS), DMD genotype–phenotype/–ataluren benefit correlations and ataluren safety. Patients & methods: Propensity score matching was performed to identify STRIDE and CINRG DNHS patients who were comparable in established disease progression predictors (registry cut-off date, 9 July 2018). Results & conclusion: Kaplan–Meier analyses demonstrated that ataluren + SoC significantly delayed age at loss of ambulation and age at worsening performance in timed function tests versus SoC alone (p ≤ 0.05). There were no DMD genotype–phenotype/ataluren benefit correlations. Ataluren was well tolerated. These results indicate that ataluren + SoC delays functional milestones of DMD progression in patients with nmDMD in routine clinical practice. ClinicalTrials.gov identifier: NCT02369731. ClinicalTrials.gov identifier: NCT02369731.
- Published
- 2020
10. Assessment of the impact on paediatric rabies at Queen Elizabeth Central Hospital, Blantyre, Malawi, following a mass canine rabies vaccination programme
- Author
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Zimmer, B.L., primary, Gamble, L., additional, Foster, R., additional, Kennedy, N., additional, Mayer, D., additional, Bailey, J. Burdon, additional, Lemon, J., additional, and Langton, J., additional
- Published
- 2019
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11. A 7nm CMOS technology platform for mobile and high performance compute application
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Narasimha, S., primary, Jagannathan, B., additional, Ogino, A., additional, Jaeger, D., additional, Greene, B., additional, Sheraw, C., additional, Zhao, K., additional, Haran, B., additional, Kwon, U., additional, Mahalingam, A. K. M., additional, Kannan, B., additional, Morganfeld, B., additional, Dechene, J., additional, Radens, C., additional, Tessier, A., additional, Hassan, A., additional, Narisetty, H., additional, Ahsan, I., additional, Aminpur, M., additional, An, C., additional, Aquilino, M., additional, Arya, A., additional, Augur, R., additional, Baliga, N., additional, Bhelkar, R., additional, Biery, G., additional, Blauberg, A., additional, Borjemscaia, N., additional, Bryant, A., additional, Cao, L., additional, Chauhan, V., additional, Chen, M., additional, Cheng, L., additional, Choo, J., additional, Christiansen, C., additional, Chu, T., additional, Cohen, B., additional, Coleman, R., additional, Conklin, D., additional, Crown, S., additional, da Silva, A., additional, Dechene, D., additional, Derderian, G., additional, Deshpande, S., additional, Dilliway, G., additional, Donegan, K., additional, Eller, M., additional, Fan, Y., additional, Fang, Q., additional, Gassaria, A., additional, Gauthier, R., additional, Ghosh, S., additional, Gifford, G., additional, Gordon, T., additional, Gribelyuk, M., additional, Han, G., additional, Han, J.H., additional, Han, K., additional, Hasan, M., additional, Higman, J., additional, Holt, J., additional, Hu, L., additional, Huang, L., additional, Huang, C., additional, Hung, T., additional, Jin, Y., additional, Johnson, J., additional, Johnson, S., additional, Joshi, V., additional, Joshi, M., additional, Justison, P., additional, Kalaga, S., additional, Kim, T., additional, Kim, W., additional, Krishnan, R., additional, Krishnan, B., additional, Anil, K., additional, Kumar, M., additional, Lee, J., additional, Lee, R., additional, Lemon, J., additional, Liew, S.L., additional, Lindo, P., additional, Lingalugari, M., additional, Lipinski, M., additional, Liu, P., additional, Liu, J., additional, Lucarini, S., additional, Ma, W., additional, Maciejewski, E., additional, Madisetti, S., additional, Malinowski, A., additional, Mehta, J., additional, Meng, C., additional, Mitra, S., additional, Montgomery, C., additional, Nayfeh, H., additional, Nigam, T., additional, Northrop, G., additional, Onishi, K., additional, Ordonio, C., additional, Ozbek, M., additional, Pal, R., additional, Parihar, S., additional, Patterson, O., additional, Ramanathan, E., additional, Ramirez, I., additional, Ranjan, R., additional, Sarad, J., additional, Sardesai, V., additional, Saudari, S., additional, Schiller, C., additional, Senapati, B., additional, Serrau, C., additional, Shah, N., additional, Shen, T., additional, Sheng, H., additional, Shepard, J., additional, Shi, Y., additional, Silvestre, M.C., additional, Singh, D., additional, Song, Z., additional, Sporre, J., additional, Srinivasan, P., additional, Sun, Z., additional, Sutton, A., additional, Sweeney, R., additional, Tabakman, K., additional, Tan, M., additional, Wang, X., additional, Woodard, E., additional, Xu, G., additional, Xu, D., additional, Xuan, T., additional, Yan, Y., additional, Yang, J., additional, Yeap, K.B., additional, Yu, M., additional, Zainuddin, A., additional, Zeng, J., additional, Zhang, K., additional, Zhao, M., additional, Zhong, Y., additional, Carter, R., additional, Lin, C.-H., additional, Grunow, S., additional, Child, C., additional, Lagus, M., additional, Fox, R., additional, Kaste, E., additional, Gomba, G., additional, Samavedam, S., additional, Agnello, P., additional, and Sohn, D. K., additional
- Published
- 2017
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12. READBACK.
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Lemon, J. Chris, Cruz, Sal, Bream, Bruce, Clark, Iain, and Bencini-Tibo, Luca
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FUEL systems ,AIRCRAFT fuels - Published
- 2023
13. Changes in woodland bird communities as replanted woodland matures
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Debus, S. J. S., primary, Martin, W. K., additional, and Lemon, J. M., additional
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- 2017
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14. Engaging a community of interest in water quality protection: Anglers monitoring wadeable streams
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Williams, J. E., primary, Rummel, S., additional, Lemon, J., additional, Barney, M., additional, Smith, K., additional, Fesenmyer, K., additional, and Schoen, J., additional
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- 2016
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15. 169 Social prescribing – can social groups address patients' and carers' emotional and wellbeing needs when diagnosed with mesothelioma or lung cancer?
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Lemon, J., primary, Boulger, A., additional, Perkins, T., additional, Savory, S., additional, Ward, M., additional, and Darlison, L., additional
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- 2016
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16. Of Power and Contemptuousness
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Lemon, J. T.
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- 2019
17. Mechanistic concepts involved in biofilm associated processes of Campylobacter jejuni: persistence and inhibition in poultry environments.
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Bundurus IA, Balta I, Pet I, Stef L, Popescu CA, McCleery D, Lemon J, Callaway T, Douglas A, and Corcionivoschi N
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- Animals, Poultry microbiology, Chickens, Campylobacter jejuni physiology, Campylobacter jejuni drug effects, Biofilms drug effects, Campylobacter Infections veterinary, Campylobacter Infections microbiology, Campylobacter Infections prevention & control, Poultry Diseases microbiology, Poultry Diseases prevention & control
- Abstract
Campylobacter species, predominantly Campylobacter jejuni, remains a significant zoonotic pathogen worldwide, with the poultry sector being the primary vector for human transmission. In recent years. there has been a notable rise in the incidence of human campylobacteriosis, necessitating a deeper understanding of the pathogen's survival mechanisms and transmission dynamics. Biofilm presence significantly contributes to C. jejuni persistence in poultry and subsequent food product contamination, and this review describes the intricate processes involved in biofilm formation. The ability of Campylobacter to form biofilms on various surfaces, including stainless steel, plastic, and glass, is a critical survival strategy. Campylobacter biofilms, with their remarkable resilience, protect the pathogen from environmental stresses such as desiccation, pH extremes, biocides and sanitizing agents. This review explores the molecular and genetic mechanisms of C. jejuni biofilm formation, highlighting regulatory genes involved in motility, chemotaxis, and stress responses. Flagellar proteins, particularly flaA, flaB, flaG, and adhesins like cadF and flpA, are identified as the main molecular components in biofilm development. The role of mixed-species biofilms, where C. jejuni integrates into existing biofilms of other bacteria to enhance pathogen resilience, is also discussed. This review also considers alternative interventions to control C. jejuni in poultry production, in the context of increasing antibiotic resistance. It explores the effectiveness of prebiotics, probiotics, synbiotics, bacteriocins, bacteriophages, vaccines, and organic acids, with a focus on their mechanisms of action in reducing bacterial colonization and biofilm formation. Studies show that mixtures of organic acids and compounds like Carvacrol and Eugenol significantly downregulate genes linked with motility and adhesion, thereby disrupting biofilm integrity. It discusses the impact of environmental factors, such as temperature and oxygen levels on biofilm formation, providing insights into how industrial conditions can be manipulated to reduce contamination. This paper stresses the need for a multifaceted approach to control Campylobacter in poultry, integrating molecular and genetic insights with practical interventions. By advancing our understanding of biofilm dynamics and gene regulation, we aim to inform the development of more effective strategies to enhance food safety and protect public health., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
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- 2024
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18. Animal models of haploinsufficiency revealed the isoform-specific role of GSK-3 in HFD-induced obesity and glucose intolerance.
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Gupte M, Umbarkar P, Lemon J, Tousif S, and Lal H
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- Animals, Mice, Disease Models, Animal, Glycogen Synthase Kinase 3 beta metabolism, Glycogen Synthase Kinase 3 beta genetics, Glycogen Synthase Kinase 3 beta antagonists & inhibitors, Mice, Knockout, Male, Mice, Inbred C57BL, Diabetes Mellitus, Type 2 genetics, Diabetes Mellitus, Type 2 metabolism, Diabetes Mellitus, Type 2 enzymology, Obesity genetics, Obesity metabolism, Obesity enzymology, Haploinsufficiency, Diet, High-Fat adverse effects, Glucose Intolerance genetics, Glucose Intolerance metabolism, Glycogen Synthase Kinase 3 genetics, Glycogen Synthase Kinase 3 metabolism, Glycogen Synthase Kinase 3 antagonists & inhibitors
- Abstract
Glycogen synthase kinase 3 (GSK-3), a serine-threonine kinase with two isoforms (α and β) is implicated in the pathogenesis of type 2 diabetes mellitus (T2D). Recently, we reported the isoform-specific role of GSK-3 in T2D using homozygous GSK-3α/β knockout mice. Although the homozygous inhibition models are idealistic in a preclinical setting, they do not mimic the inhibition seen with pharmacological agents. Hence, in this study, we sought to investigate the dose-response effect of GSK-3α/β inhibition in the pathogenesis of obesity-induced T2D. Specifically, to gain insight into the dose-response effect of GSK-3 isoforms in T2D, we generated tamoxifen-inducible global GSK-3α/β heterozygous mice. GSK-3α/β heterozygous and control mice were fed a high-fat diet (HFD) for 16 wk. At baseline, the body weight and glucose tolerance of GSK-3α heterozygous and controls were comparable. In contrast, at baseline, a modest but significantly higher body weight (higher lean mass) was seen in GSK-3β heterozygous compared with controls. Post-HFD, GSK-3α heterozygous and controls displayed a comparable phenotype. However, GSK-3β heterozygous were significantly protected against obesity-induced glucose intolerance. Interestingly, the improved glucose tolerance in GSK-3β heterozygous animals was dampened with chronic HFD-feeding, likely due to significantly higher fat mass and lower lean mass in the GSK-3β animals. These findings suggest that GSK-3β is the dominant isoform in glucose metabolism. However, to avail the metabolic benefits of GSK-3β inhibition, it is critical to maintain a healthy weight. NEW & NOTEWORTHY The precise isoform-specific role of GSK-3 in obesity-induced glucose intolerance is unclear. To overcome the limitations of pharmacological GSK-3 inhibitors (not isoform-specific) and tissue-specific genetic models, in the present study, we created novel inducible heterozygous mouse models of GSK-3 inhibition that allowed us to delete the gene globally in an isoform-specific and temporal manner to determine the isoform-specific role of GSK-3 in obesity-induced glucose intolerance.
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- 2024
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19. The One Health aspect of climate events with impact on foodborne pathogens transmission.
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Balta I, Lemon J, Murnane C, Pet I, Vintila T, McCleery D, Callaway T, Douglas A, Stef L, and Corcionivoschi N
- Abstract
The ongoing effects of climate change have exacerbated two significant challenges to global populations: the transmission of foodborne pathogens and antimicrobial resistance (AMR) through the food chain. Using the latest available scientific information this review explores how climate-related factors such as rainfall, floods, storms, hurricanes, cyclones, dust, temperature and humidity impact the spread of the foodborne pathogens Salmonella , E. coli , Campylobacter , Vibrio , Listeria , and Staphylococcus aureus . We explore the complex dynamics between environmental changes and the heightened risk of foodborne diseases, analysing the contribution of wildlife, insects and contaminated environments in the proliferation of AMR and climate change. This review paper combines a thorough analysis of current literature with a discussion on findings from a wide variety of studies to provide a comprehensive overview of how climatic factors contribute to the survival, persistence and transmission of bacterial pathogens in the food chain. In addition, we discuss the necessity for effective mitigation strategies and policies. By providing insights into the interrelationships between climate change and food safety, this review hopes to inform future research and policy development to promote safer and more sustainable food systems and further integration within the One Health approach., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors. Published by Elsevier B.V.)
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- 2024
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20. Reversing the decline of threatened koala ( Phascolarctos cinereus ) populations in New South Wales: Using genomics to enhance conservation outcomes.
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Lott MJ, Frankham GJ, Eldridge MDB, Alquezar-Planas DE, Donnelly L, Zenger KR, Leigh KA, Kjeldsen SR, Field MA, Lemon J, Lunney D, Crowther MS, Krockenberger MB, Fisher M, and Neaves LE
- Abstract
Genetic management is a critical component of threatened species conservation. Understanding spatial patterns of genetic diversity is essential for evaluating the resilience of fragmented populations to accelerating anthropogenic threats. Nowhere is this more relevant than on the Australian continent, which is experiencing an ongoing loss of biodiversity that exceeds any other developed nation. Using a proprietary genome complexity reduction-based method (DArTSeq), we generated a data set of 3239 high quality Single Nucleotide Polymorphisms (SNPs) to investigate spatial patterns and indices of genetic diversity in the koala ( Phascolarctos cinereus ), a highly specialised folivorous marsupial that is experiencing rapid and widespread population declines across much of its former range. Our findings demonstrate that current management divisions across the state of New South Wales (NSW) do not fully represent the distribution of genetic diversity among extant koala populations, and that care must be taken to ensure that translocation paradigms based on these frameworks do not inadvertently restrict gene flow between populations and regions that were historically interconnected. We also recommend that koala populations should be prioritised for conservation action based on the scale and severity of the threatening processes that they are currently faced with, rather than placing too much emphasis on their perceived value (e.g., as reservoirs of potentially adaptive alleles), as our data indicate that existing genetic variation in koalas is primarily partitioned among individual animals. As such, the extirpation of koalas from any part of their range represents a potentially critical reduction of genetic diversity for this iconic Australian species., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported in this manuscript., (© 2024 The Author(s). Ecology and Evolution published by John Wiley & Sons Ltd.)
- Published
- 2024
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21. Post-kyphoplasty myelopathy, an unusual presentation of post-operative anterior spinal cord infarct: A case report.
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Li S, Lemon J, Ibrahim M, Mi K, Ferguson S, Rust K, and Homan J
- Abstract
Highlights: To discuss a rare complication of prone positioning during kyphoplasty.To compare two rare causes of anterior spinal artery infarct secondary to prone positioning: Surfer Myelopathy and post-kyphoplasty myelopathy., Background: Kyphoplasty is a common, minimally invasive procedure performed to restore vertebral body structure and relieve pain in insufficiency fractures that are refractory to conservative treatments. Complications are infrequent, but typically arise from epidural hematoma, cement embolism, or cement extravasation causing stenosis within the spinal canal or neural foramina. In this case, we discuss a rare complication involving a spinal cord infarct developing several levels above the level of intervention due to compression of the anterior spinal artery., Case Presentation: A 71-year-old female with kyphotic deformity and midthoracic compression fractures underwent a procedurally uneventful T12 kyphoplasty. Pre-procedure MRI demonstrated T12 superior endplate compression deformity with mild retropulsion of the superior endplate. Chronic T6 and T8 compression fractures with kyphotic deformity were also seen. Shortly after the procedure, she developed right leg pain and numbness progressing to profound weakness. She was taken immediately for CT scan of the thoracolumbar spine which was negative for cement extravasation, and subsequent MRI was negative for epidural hematoma. The MRI did show a peculiar finding of spinal cord infarct from T8 to the conus with punctate hemorrhage at T11., Conclusions: It is postulated that the incomplete cord infarct in this patient occurred due to compression of the anterior spinal artery or radicular arteries during positioning in the setting of kyphotic deformity and posterior osteophyte. The dysmorphic changes seen at T8 may have behaved similarly to a disc herniation in compressing the spinal artery in a prone position., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 The Authors.)
- Published
- 2023
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22. B2 cells contribute to hypertension and natural killer cell activation possibly via AT1-AA in response to placental ischemia.
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Herrock OT, Deer E, Amaral LM, Campbell N, Lemon J, Ingram N, Cornelius DC, Turner TW, Fitzgerald S, Ibrahim T, Dechend R, Wallukat G, and LaMarca B
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- Humans, Rats, Pregnancy, Female, Animals, Placenta, Autoantibodies, Receptor, Angiotensin, Type 1 metabolism, Rats, Sprague-Dawley, Killer Cells, Natural metabolism, Ischemia metabolism, Blood Pressure physiology, Pre-Eclampsia, Hypertension
- Abstract
Preeclampsia, new onset hypertension during pregnancy, is associated with activated T helper cells (Th) and B cells secreting agonistic autoantibodies against the angiotensin II type 1 receptor (AT1-AA). The reduced uterine perfusion pressure (RUPP) model of placental ischemia recapitulates these characteristics. We have shown that Th-B cell communication contributes to AT1-AA and symptoms of preeclampsia in the RUPP rat. B2 cells are classical B cells that communicate with Th cells and are then transformed into memory B cells. We hypothesize that B2 cells cause hypertension, natural killer (NK) cell activation, and complement activation during pregnancy through the production of AT1-AA. To test this hypothesis, total splenic B cells and B2 cells were isolated from normal pregnant (NP) or RUPP rats on gestational day (GD)19 and adoptively transferred into GD12 NP rats. A group of recipient rats was treated with a specific inhibitor peptide of AT1-AA. On GD19, mean arterial pressure was measured, tissues were collected, activated NK cells were measured by flow cytometry, and AT1-AA was measured by cardiomyocyte assay. NP recipients of RUPP B cells or RUPP B2 cells had increased mean arterial pressure, AT1-AA, and circulating activated NK cells compared with recipients of NP B cells. Hypertension in NP recipients of RUPP B cells or RUPP B2 was attenuated with AT1-AA blockade. This study demonstrates that B cells and B2 cells from RUPP rats cause hypertension and increased AT1-AA and NK cell activation in response to placental ischemia during pregnancy. NEW & NOTEWORTHY This study demonstrates that placental ischemia-stimulated B2 cells induce hypertension and circulating natural killer cell activation and angiotensin II type 1 receptor production in normal pregnant rats.
- Published
- 2023
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23. Clinical evaluation of the acuitas® AMR gene panel for rapid detection of bacteria and genotypic antibiotic resistance determinants.
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Riedel S, Halls J, Dutta S, Toraskar N, Lemon J, Carter K, Sinclair W, Lopansri BK, Styer AM, Wolk DM, and Walker GT
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- Bacteria classification, Enterococcus faecalis drug effects, Enterococcus faecalis genetics, Humans, Klebsiella pneumoniae drug effects, Klebsiella pneumoniae genetics, Microbial Sensitivity Tests, Molecular Diagnostic Techniques instrumentation, Polymerase Chain Reaction standards, Proteus mirabilis drug effects, Proteus mirabilis genetics, Pseudomonas aeruginosa drug effects, Pseudomonas aeruginosa genetics, Tertiary Care Centers, Urinary Tract Infections microbiology, Urinary Tract Infections urine, Anti-Bacterial Agents pharmacology, Bacteria drug effects, Bacteria genetics, Drug Resistance, Multiple, Bacterial genetics, Genotype, Molecular Diagnostic Techniques standards, Urinary Tract Infections diagnosis
- Abstract
Urinary tract infections are leading causes of hospital admissions. Accurate and timely diagnosis is important due to increasing morbidity and mortality from antimicrobial resistance. We evaluated a polymerase chain reaction test (Acuitas AMR Gene Panel with the Acuitas Lighthouse Software) for detection of 5 common uropathogens (Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, Enterococcus faecalis) and antibiotic resistance genes directly from urine for prediction of phenotypic resistance. Overall percent agreement was 97% for semiquantitative detection of uropathogens versus urine culture using a cut-off of 10
4 colony forming units per mL urine. Overall accuracy was 91% to 93% for genotypic prediction of common antibiotic resistance harbored by E. coli, K. pneumoniae, and P. mirabilis., Competing Interests: Conflict of interest Dr. Stefan Riedel serves as a member of the OpGen, Inc., Clinical Advisory Board and as a paid consultant to OpGen, Inc. Dr. Bert K. Lopansri is a medical consultant to Luminex, Corp and has received research support from Immunexpress, Inc., (Copyright © 2021 Elsevier Inc. All rights reserved.)- Published
- 2021
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24. Acceptance and commitment therapy for young brain tumour survivors: study protocol for an acceptability and feasibility trial.
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Malins S, Owen R, Wright I, Borrill H, Limond J, Gibson F, Grundy RG, Bailey S, Clifford SC, Lowis S, Lemon J, Hayes L, and Thomas S
- Subjects
- Adolescent, Feasibility Studies, Humans, Quality of Life, Randomized Controlled Trials as Topic, Survivors, Acceptance and Commitment Therapy, Brain Neoplasms therapy
- Abstract
Introduction: Survivors of childhood brain tumours have the poorest health-related quality of life of all cancer survivors due to the multiple physical and psychological sequelae of brain tumours and their treatment. Remotely delivered acceptance and commitment therapy (ACT) may be a suitable and accessible psychological intervention to support young people who have survived brain tumours. This study aims to assess the feasibility and acceptability of remotely delivered ACT to improve quality of life among these young survivors., Methods and Analysis: This study is a two-arm, parallel group, randomised controlled trial comparing ACT with waitlist control at 12-week follow-up as the primary endpoint. Seventy-two participants will be recruited, who are aged 11-24 and have completed brain tumour treatment. Participants will be randomised to receive 12 weeks of ACT either immediately or after a 12-week wait. The DNA-v model of ACT will be employed, which is a developmentally appropriate model for young people. Feasibility will be assessed using the proportion of those showing interest who consent to the trial and complete the intervention. Acceptability will be assessed using participant evaluations of the intervention, alongside qualitative interviews and treatment diaries analysed thematically. A range of clinical outcome measures will also assess physical and mental health, everyday functioning, quality of life and service usage at 12-week follow-up. The durability of treatment effects will be assessed by further follow-up assessments at 24 weeks, 36 weeks and 48 weeks., Ethics and Dissemination: Ethical approval was given by East Midlands, Nottingham 1 Research Ethics Committee (Reference: 20/EM/0237). Study results will be disseminated in peer-reviewed journals, through public events and relevant third sector organisations., Trial Registration: ISRCTN10903290; NCT04722237., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2021
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25. Effect of carbohydrate-protein supplementation on endurance training adaptations.
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Alghannam AF, Templeman I, Thomas JE, Jedrzejewski D, Griffiths S, Lemon J, Byers T, Reeves S, Gonzalez JT, Thompson D, Bilzon J, Tsintzas K, and Betts JA
- Subjects
- Adolescent, Adult, Dietary Carbohydrates administration & dosage, Dietary Proteins administration & dosage, Female, Humans, Male, Muscle, Skeletal metabolism, Muscle, Skeletal physiology, Oxygen Consumption, TOR Serine-Threonine Kinases genetics, TOR Serine-Threonine Kinases metabolism, Adaptation, Physiological drug effects, Dietary Carbohydrates pharmacology, Dietary Proteins pharmacology, Endurance Training methods
- Abstract
Purpose: To examine the influence of post-exercise protein feeding upon the adaptive response to endurance exercise training., Methods: In a randomised parallel group design, 25 healthy men and women completed 6 weeks of endurance exercise training by running on a treadmill for 30-60 min at 70-75% maximal oxygen uptake (VO
2max ) 4 times/week. Participants ingested 1.6 g per kilogram of body mass (g kg BM-1 ) of carbohydrate (CHO) or an isocaloric carbohydrate-protein solution (CHO-P; 0.8 g carbohydrate kg BM-1 + 0.8 g protein kg BM-1 ) immediately and 1 h post-exercise. Expired gas, blood and muscle biopsy samples were taken at baseline and follow-up., Results: Exercise training improved VO2max in both groups (p ≤ 0.001), but this increment was not different between groups either in absolute terms or relative to body mass (0.2 ± 0.2 L min-1 and 3.0 ± 2 mL kg-1 min-1 , respectively). No change occurred in plasma albumin concentration from baseline to follow-up with CHO-P (4.18 ± 0.18 to 4.23 ± 0.17 g dL-1 ) or CHO (4.17 ± 0.17 to 4.12 ± 0.22 g dL-1 ; interaction: p > 0.05). Mechanistic target of rapamycin (mTOR) gene expression was up-regulated in CHO-P (+ 46%; p = 0.025) relative to CHO (+ 4%) following exercise training., Conclusion: Post-exercise protein supplementation up-regulated the expression of mTOR in skeletal muscle over 6 weeks of endurance exercise training. However, the magnitude of improvement in VO2max was similar between groups.- Published
- 2020
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26. Methane concentrations in streams reveal gas leak discharges in regions of oil, gas, and coal development.
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Woda J, Wen T, Lemon J, Marcon V, Keeports CM, Zelt F, Steffy LY, and Brantley SL
- Abstract
As natural gas has grown in importance as a global energy source, leakage of methane (CH
4 ) from wells has sometimes been noted. Leakage of this greenhouse gas is important because it affects groundwater quality and, when emitted to the atmosphere, climate. We hypothesized that streams might be most contaminated by CH4 in the northern Appalachian Basin in regions with the longest history of hydrocarbon extraction activities. To test this, we searched for CH4 -contaminated streams in the basin. Methane concentrations ([CH4 ]) for 529 stream sites are reported in New York, West Virginia and (mostly) Pennsylvania. Despite targeting contaminated areas, the median [CH4 ], 1.1 μg/L, was lower than a recently identified threshold indicating potential contamination, 4.0 μg/L. [CH4 ] values were higher in a few streams because they receive high-[CH4 ] groundwaters, often from upwelling seeps. By analogy to the more commonly observed type of groundwater seep known as abandoned mine drainage (AMD), we introduce the term, "gas leak discharge" (GLD) for these waters where they are not associated with coal mines. GLD and AMD, observed in all parts of the study area, are both CH4 -rich. Surprisingly, the region of oldest and most productive oil/gas development did not show the highest median for stream [CH4 ]. Instead, the median was statistically highest where dense coal mining was accompanied by conventional and unconventional oil and gas development, emphasizing the importance of CH4 contamination from coal mines into streams., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2020 Elsevier B.V. All rights reserved.)- Published
- 2020
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27. Understanding parental perspectives on outcomes following paediatric encephalitis: A qualitative study.
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Lemon J, Cooper J, Defres S, Easton A, Sadarangani M, Griffiths MJ, Pollard AJ, Solomon T, and Kneen R
- Subjects
- Adolescent, Age Factors, Child, Child, Preschool, Encephalitis etiology, Female, Humans, Infant, Infant, Newborn, Male, Patient Outcome Assessment, Prospective Studies, Public Health Surveillance, Qualitative Research, Social Support, Stress, Psychological, Encephalitis epidemiology, Parents psychology
- Abstract
Background: Encephalitis, characterised as inflammation of the brain tissue, is an important cause of acquired brain injury in children. Objective clinical outcomes vary significantly between affected patients, however they do not always correlate with quality of life as reported by parents. The aim of this study was to explore how parents experience and interpret outcomes in relation to their child who has been affected by encephalitis., Methods: Data were derived from in-depth, semi-structured interviews, with 15 parents of 12 children and young people affected by encephalitis. Paediatric cases were identified from the retrospective arm of the research programme 'ENCEPH-UK-Understanding and Improving the Outcome of Encephalitis', and from the prospective UK childhood meningitis and encephalitis cohort study (UK-ChiMES, 2012 to 2016). Data were analysed thematically., Results: Parents' perspectives on important outcomes for their child and family changed during the different stages of the encephalitis illness trajectory: from acute illness, recovery and rehabilitation, then reintegration into everyday life. Parents' understanding of their children's overall outcome was informed by their own experiences, involving comparisons with other children and reflections on their child's problems before, during and after the acute illness., Conclusion: Outcomes in paediatric encephalitis need to be understood in terms of the context of the patient and family experience as well as the timeframe of recovery. The research highlights the need to include more patient, parent and/or carer reported outcome measures during patient assessment, and that assessment should be repeated during recovery as family concerns change. In the longer term, these parameters could be included in clinical and rehabilitation practice to further support child recovery., Competing Interests: We have read the journal’s policy and the authors of this manuscript have the following competing interests: TS is supported by the National Institute for Health Research (NIHR) Health Protection Research Unit in Emerging and Zoonotic Infections (Grant No. IS-HPU-1112-10117), NIHR Global Health Research Group on Brain Infections (No. 17/63/110), and the European Union’s Horizon 2020 research and innovation program ZikaPLAN (Preparedness Latin America Network), grant agreement No. 734584. MS is supported via salary awards from the BC Children’s Hospital Foundation, the Canadian Child Health Clinician Scientist Program and the Michael Smith Foundation for Health Research. He has been an investigator on studies funded by Pfizer, Merck, VBI Vaccines and GlaxoSmithKline. All funds have been paid to his institute, and he has not received any personal payments. AJP reports a grant from Okairos which ended in 2016, outside the submitted work. AJP is Chair of UK Dept. Health and Social Care’s Joint Committee on Vaccination & Immunisation & the European Medicines Agency Scientific Advisory Group on Vaccines and is a member of the World Health Organisation’s Strategic Advisory Group of Experts on Immunisation. This does not alter our adherence to PLOS ONE policies on sharing data and materials.
- Published
- 2019
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28. Rhabdomyolysis and myoglobinuria following bisphosphonate infusion in patients with Duchenne muscular dystrophy.
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Lemon J, Turner L, Dharmaraj P, and Spinty S
- Subjects
- Diphosphonates, Humans, Zoledronic Acid, Muscular Dystrophy, Duchenne, Myoglobinuria, Rhabdomyolysis
- Published
- 2019
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29. The effects of training impulse control on simulated driving.
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Hatfield J, Williamson A, Kehoe EJ, Lemon J, Arguel A, Prabhakharan P, and Job RFS
- Subjects
- Adolescent, Adult, Age Factors, Computer Simulation, Female, Humans, Male, Motivation, Risk, Task Performance and Analysis, Young Adult, Accidents, Traffic prevention & control, Automobile Driving education, Impulsive Behavior, Inhibition, Psychological, Risk-Taking
- Abstract
There is growing interest in young driver training that addresses age-related factors, including incompletely developed impulse control. Two studies investigated whether training of response inhibition can reduce risky simulated driving in young drivers (aged 16-24 years). Each study manipulated aspects of response inhibition training then assessed transfer of training using simulated driving measures including speeding, risky passing, and compliance with traffic controls. Study 1 (n = 65) used a Go/No-go task, Stop Signal Task and a Collision Detection Task. Designed to promote engagement, learning, and transfer, training tasks were driving-relevant and adaptive (i.e. difficulty increased as performance improved), included performance feedback, and were distributed over five days. Control participants completed matching "filler" tasks. Performance on trained tasks improved with training, but there was no significant improvement in simulated driving. Study 2 enhanced response inhibition training using Go/No-go and SST tasks, with clearer performance feedback, and 10 days of training. Control participants completed testing only, in order to avoid any possibility of training response inhibition in the filler tasks. Again performance on trained tasks improved, but there was no evidence of transfer of training to simulated driving. These findings suggest that although training of sufficient interest and duration can improve response inhibition task performance, a training schedule that is likely to be acceptable to the public does not result in improvements in simulated driving. Further research is needed to investigate whether response inhibition training can improve risky driving in the context of real-world motivations for risky driving., (Copyright © 2018 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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30. Microsampling Collection Methods for Measurement of C-peptide in Whole Blood.
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Jones C, Dunseath GJ, Lemon J, and Luzio SD
- Subjects
- Diabetes Mellitus blood, Dried Blood Spot Testing, Healthy Volunteers, Humans, Pilot Projects, Blood Specimen Collection methods, C-Peptide blood
- Abstract
Background: Microsampling techniques are alternative methods to venous sampling for obtaining blood for measurement of circulating biomarkers, offering the convenience of reduced sample volume and elimination of the need for phlebotomists. Dried blood spot (DBS) microsampling methods have been used for many years while more recently a volumetric absorptive microsampling device (VAMS™) has been introduced. In diabetes mellitus, circulating C-peptide is commonly used as an indicator of endogenous insulin secretion and clinical measurement can aid in diagnosis as well as informing on therapy. This pilot study investigated the effectiveness of microsampling collection of capillary blood for measurement of C-peptide., Methods: Capillary blood was collected into capillary tubes and centrifuged for plasma samples. Simultaneous samples were also collected using both microsampling methods (DBS and VAMS). Blood from both microsamplers was extracted prior to assaying for C-peptide alongside the corresponding plasma samples, using specific immunoassays and results obtained from microsampling compared to the reference plasma concentrations. Stability was determined by collecting duplicate DBS and VAMS and assaying both in a single assay after storing one at -20°C immediately and one at room temperature for 48 hours post-collection., Results: Good agreement was observed between C-peptide concentrations in plasma and equivalent DBS and VAMS samples ( R
2 = .929 and .9231, DBS and VAMS, respectively), with mean differences of 75.7 and 8.4 pmol/L observed for DBS and VAMS. Small decreases in C-peptide of 11.6% and 0.1% were observed after 48 hours storage for DBS and VAMS, respectively., Conclusions: C-peptide collected using DBS and VAMS showed good agreement with reference plasma concentrations, suggesting both would be an effective microsampling method for collection and measurement of C-peptide.- Published
- 2018
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31. RENEB intercomparisons applying the conventional Dicentric Chromosome Assay (DCA).
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Oestreicher U, Samaga D, Ainsbury E, Antunes AC, Baeyens A, Barrios L, Beinke C, Beukes P, Blakely WF, Cucu A, De Amicis A, Depuydt J, De Sanctis S, Di Giorgio M, Dobos K, Dominguez I, Duy PN, Espinoza ME, Flegal FN, Figel M, Garcia O, Monteiro Gil O, Gregoire E, Guerrero-Carbajal C, Güçlü İ, Hadjidekova V, Hande P, Kulka U, Lemon J, Lindholm C, Lista F, Lumniczky K, Martinez-Lopez W, Maznyk N, Meschini R, M'kacher R, Montoro A, Moquet J, Moreno M, Noditi M, Pajic J, Radl A, Ricoul M, Romm H, Roy L, Sabatier L, Sebastià N, Slabbert J, Sommer S, Stuck Oliveira M, Subramanian U, Suto Y, Que T, Testa A, Terzoudi G, Vral A, Wilkins R, Yanti L, Zafiropoulos D, and Wojcik A
- Subjects
- Biological Assay standards, Europe, Humans, Lymphocytes radiation effects, Radiation Monitoring standards, Reproducibility of Results, Sensitivity and Specificity, Biological Assay methods, Chromosome Aberrations radiation effects, Micronucleus Tests methods, Quality Assurance, Health Care, Radiation Exposure analysis, Radiation Monitoring methods
- Abstract
Purpose: Two quality controlled inter-laboratory exercises were organized within the EU project 'Realizing the European Network of Biodosimetry (RENEB)' to further optimize the dicentric chromosome assay (DCA) and to identify needs for training and harmonization activities within the RENEB network., Materials and Methods: The general study design included blood shipment, sample processing, analysis of chromosome aberrations and radiation dose assessment. After manual scoring of dicentric chromosomes in different cell numbers dose estimations and corresponding 95% confidence intervals were submitted by the participants., Results: The shipment of blood samples to the partners in the European Community (EU) were performed successfully. Outside the EU unacceptable delays occurred. The results of the dose estimation demonstrate a very successful classification of the blood samples in medically relevant groups. In comparison to the 1st exercise the 2nd intercomparison showed an improvement in the accuracy of dose estimations especially for the high dose point., Conclusions: In case of a large-scale radiological incident, the pooling of ressources by networks can enhance the rapid classification of individuals in medically relevant treatment groups based on the DCA. The performance of the RENEB network as a whole has clearly benefited from harmonization processes and specific training activities for the network partners.
- Published
- 2017
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32. Data Resource Profile: The Aberdeen Maternity and Neonatal Databank (AMND).
- Author
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Ayorinde AA, Wilde K, Lemon J, Campbell D, and Bhattacharya S
- Subjects
- Epidemiology, Female, Hospitals, Maternity, Humans, Infant, Newborn, Information Storage and Retrieval statistics & numerical data, Male, Mandatory Reporting, Pregnancy, Scotland, Databases as Topic, Delivery, Obstetric statistics & numerical data, Information Storage and Retrieval methods, Pregnancy Outcome epidemiology
- Published
- 2016
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33. Synergistic effects of diet and exercise on hippocampal function in chronically stressed mice.
- Author
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Hutton CP, Déry N, Rosa E, Lemon JA, Rollo CD, Boreham DR, Fahnestock M, deCatanzaro D, Wojtowicz JM, and Becker S
- Subjects
- Animals, Brain-Derived Neurotrophic Factor metabolism, Chronic Disease, Depressive Disorder pathology, Depressive Disorder physiopathology, Depressive Disorder therapy, Diet, Disease Models, Animal, Doublecortin Protein, Hippocampus pathology, Insulin-Like Growth Factor I metabolism, Male, Mice, Inbred C57BL, Neurogenesis physiology, Organ Size, Physical Conditioning, Animal physiology, Stress, Psychological pathology, Treatment Outcome, Uncertainty, Vascular Endothelial Growth Factor A blood, Dietary Supplements, Hippocampus physiopathology, Running physiology, Stress, Psychological physiopathology, Stress, Psychological therapy
- Abstract
Severe chronic stress can have a profoundly negative impact on the brain, affecting plasticity, neurogenesis, memory and mood. On the other hand, there are factors that upregulate neurogenesis, which include dietary antioxidants and physical activity. These factors are associated with biochemical processes that are also altered in age-related cognitive decline and dementia, such as neurotrophin expression, oxidative stress and inflammation. We exposed mice to an unpredictable series of stressors or left them undisturbed (controls). Subsets of stressed and control mice were concurrently given (1) no additional treatment, (2) a complex dietary supplement (CDS) designed to ameliorate inflammation, oxidative stress, mitochondrial dysfunction, insulin resistance and membrane integrity, (3) a running wheel in each of their home cages that permitted them to exercise, or (4) both the CDS and the running wheel for exercise. Four weeks of unpredictable stress reduced the animals' preference for saccharin, increased their adrenal weights and abolished the exercise-induced upregulation of neurogenesis that was observed in non-stressed animals. Unexpectedly, stress did not reduce hippocampal size, brain-derived neurotrophic factor (BDNF), or neurogenesis. The combination of dietary supplementation and exercise had multiple beneficial effects, as reflected in the number of doublecortin (DCX)-positive immature neurons in the dentate gyrus (DG), the sectional area of the DG and hippocampal CA1, as well as increased hippocampal BDNF messenger ribonucleic acid (mRNA) and serum vascular endothelial growth factor (VEGF) levels. In contrast, these benefits were not observed in chronically stressed animals exposed to either dietary supplementation or exercise alone. These findings could have important clinical implications for those suffering from chronic stress-related disorders such as major depression., (Copyright © 2015 IBRO. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2015
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34. Density-based parallel skin lesion border detection with webCL.
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Lemon J, Kockara S, Halic T, and Mete M
- Subjects
- Humans, Melanoma pathology, Pattern Recognition, Automated methods, Skin Neoplasms pathology, Dermoscopy methods, Image Interpretation, Computer-Assisted methods, Melanoma diagnosis, Skin pathology, Skin Neoplasms diagnosis
- Abstract
Background: Dermoscopy is a highly effective and noninvasive imaging technique used in diagnosis of melanoma and other pigmented skin lesions. Many aspects of the lesion under consideration are defined in relation to the lesion border. This makes border detection one of the most important steps in dermoscopic image analysis. In current practice, dermatologists often delineate borders through a hand drawn representation based upon visual inspection. Due to the subjective nature of this technique, intra- and inter-observer variations are common. Because of this, the automated assessment of lesion borders in dermoscopic images has become an important area of study., Methods: Fast density based skin lesion border detection method has been implemented in parallel with a new parallel technology called WebCL. WebCL utilizes client side computing capabilities to use available hardware resources such as multi cores and GPUs. Developed WebCL-parallel density based skin lesion border detection method runs efficiently from internet browsers., Results: Previous research indicates that one of the highest accuracy rates can be achieved using density based clustering techniques for skin lesion border detection. While these algorithms do have unfavorable time complexities, this effect could be mitigated when implemented in parallel. In this study, density based clustering technique for skin lesion border detection is parallelized and redesigned to run very efficiently on the heterogeneous platforms (e.g. tablets, SmartPhones, multi-core CPUs, GPUs, and fully-integrated Accelerated Processing Units) by transforming the technique into a series of independent concurrent operations. Heterogeneous computing is adopted to support accessibility, portability and multi-device use in the clinical settings. For this, we used WebCL, an emerging technology that enables a HTML5 Web browser to execute code in parallel for heterogeneous platforms. We depicted WebCL and our parallel algorithm design. In addition, we tested parallel code on 100 dermoscopy images and showed the execution speedups with respect to the serial version. Results indicate that parallel (WebCL) version and serial version of density based lesion border detection methods generate the same accuracy rates for 100 dermoscopy images, in which mean of border error is 6.94%, mean of recall is 76.66%, and mean of precision is 99.29% respectively. Moreover, WebCL version's speedup factor for 100 dermoscopy images' lesion border detection averages around ~491.2., Conclusions: When large amount of high resolution dermoscopy images considered in a usual clinical setting along with the critical importance of early detection and diagnosis of melanoma before metastasis, the importance of fast processing dermoscopy images become obvious. In this paper, we introduce WebCL and the use of it for biomedical image processing applications. WebCL is a javascript binding of OpenCL, which takes advantage of GPU computing from a web browser. Therefore, WebCL parallel version of density based skin lesion border detection introduced in this study can supplement expert dermatologist, and aid them in early diagnosis of skin lesions. While WebCL is currently an emerging technology, a full adoption of WebCL into the HTML5 standard would allow for this implementation to run on a very large set of hardware and software systems. WebCL takes full advantage of parallel computational resources including multi-cores and GPUs on a local machine, and allows for compiled code to run directly from the Web Browser.
- Published
- 2015
- Full Text
- View/download PDF
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