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Thomas H, Binnie J. The paradox of pornography - sexuality and problematic pornography use. Cult Health Sex 2024; 26:433-448. [PMID: 37212017 DOI: 10.1080/13691058.2023.2213750] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 05/10/2023] [Indexed: 05/23/2023]
Abstract
The experiences of sexual minority men who report self-perceived problematic pornography use is under theorised and not well understood despite controversial and conflicting research into the phenomena in heterosexual male populations. This study aimed to widen the conversation to consider the experience of sexuality in relation to self-perceived problematic pornography use, rather than contribute to literature that debates the definition and aetiology of problematic pornography use. Semi-structured online qualitative interviews were conducted with three sexual minority men who self-reported problematic pornography use. Interpretive phenomenological analysis was used to develop themes. Five themes pertinent to understanding the participants' experiences with problematic pornography use were developed: problematised sexuality, pornography as liberator, pornography as corrupter, reform, and relapse and restore. The themes highlight three men's relationship with their sexuality as a feature of their self-perceived problematic pornography use. The research suggests that idiographic experiences of self-perceived problematic pornography use are influenced and maintained by an incongruent and conflicting relationship between an individual's own experiences of sexuality and self-perceptions of pornography use. Limitations and future research recommendations are discussed.
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Affiliation(s)
- Howard Thomas
- Division of Psychology, School of Applied Sciences, London South Bank University, London, UK
| | - James Binnie
- Division of Psychology, School of Applied Sciences, London South Bank University, London, UK
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Jiao C, Ling DC, Bian SX, Vassantachart A, Cheng K, Mehta S, Lock D, Feng M, Thomas H, Scholey J, Sheng K, Fan Z, Yang W. Contouring Analysis on Synthetic Contrast-Enhanced MR from GRMM-GAN and Implications on MR-Guide Radiation Therapy. Int J Radiat Oncol Biol Phys 2023; 117:S117. [PMID: 37784304 DOI: 10.1016/j.ijrobp.2023.06.450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) MR-guided linear accelerators have been commercialized making MR-only planning and adaptation an appealing alternative circumventing MR-CT registration. However, obtaining daily contrast-enhanced MR images can be prohibitive due to the increased risk of side effects from repeated contrast injections. In this work, we evaluate the quality of contrast-enhanced multi-modal MR image synthesis network GRMM-GAN (gradient regularized multi-modal multi-discrimination sparse-attention fusion generative adversarial network) for MR-guided radiation therapy. MATERIALS/METHODS With IRB approval, we trained the GRMM-GAN based on 165 abdominal MR studies from 65 patients. Each study included T2, T1 pre-contrast (T1pre), and T1 contrast enhanced (T1ce) images. The two pre-contrast MR modalities, T2 and T1pre images were adopted as inputs for GRMM-GAN, and the T1ce image at the portal venous phase was used as an output. Ten MR scans containing 21 liver tumors were selected for contouring analysis. A Turing test was first given to six radiation oncologists, in which 100 real T1ce and synthetic T1ce image slices are randomly given to the radiation oncologists to determine the authenticity of the synthesis. We then invited two radiation oncologists (RadOnc 1 and RadOnc2) to manually contour the 21 liver tumors independently on the real T1ce images. RadOnc2 then performed contouring on the respective synthetic T1ce MRs. DICE coefficient (defined as the intersection over the average of two volumes) and Hausdorff distance (HD, measuring how far two volumes are from each other) were used as analysis metrics. The DICE coefficients were calculated from the two radiation oncologists' contours on the real T1ce MR for each tumor. The DICE coefficients were also calculated from RadOnc 2's contours on real and synthetic MRs. Besides, tumor center shifts were extracted. The tumor center of mass coordinates was extracted from real and synthetic volumes. The difference in the coordinates indicated the shifts in the superior-inferior (SI), right-left (RL), and anterior-posterior (AP) directions between real and synthetic tumor volumes. RESULTS An average of 52.3% test score was achieved from the six radiation oncologists, which is close to random guessing. RadOnc 1 and RadOnc 2, who had participated in the contouring analysis, achieved an average DICE of 0.91±0.02 from tumor volumes drawn on the real T1ce MRs. This result sets the inter-operator uncertainty baseline in the real clinical setting. RadOnc 2 achieved an average DICE (real vs. synth) of 0.90±0.04 and HD of 4.76±1.82 mm. Only sub-millimeter (SI: 0.67 mm, RL: 0.41 mm, AP: 0.39 mm) tumor center shifts were observed in all three directions. CONCLUSION The GRMM-GAN method has the potential for MR-guided liver radiation when contrast agents cannot be administered daily and provide synthetic contrast-enhanced MR for better tumor targeting. The network can produce synthetic MR images with satisfactory contour agreement and geometric integrity.
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Affiliation(s)
- C Jiao
- University of California, San Francisco, San Francisco, CA
| | - D C Ling
- University of Southern California, Los Angeles, CA
| | - S X Bian
- University of Southern California, Los Angeles, CA
| | - A Vassantachart
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - K Cheng
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - S Mehta
- Department of Radiation Oncology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - D Lock
- University of Southern California, Los Angeles, CA
| | - M Feng
- University of California, San Francisco, San Francisco, CA
| | - H Thomas
- University of California, San Francisco, San Francisco, CA
| | - J Scholey
- University of California, San Francisco, San Francisco, CA
| | - K Sheng
- University of California, San Francisco, San Francisco, CA
| | - Z Fan
- University of Southern California, Los Angeles, CA
| | - W Yang
- University of California, San Francisco, San Francisco, CA
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Thursz M, Sadiq F, Tree JA, Karayiannis P, Beasley DWC, Dejnirattisai W, Mongkolsapaya J, Screaton G, Wand M, Elmore MJ, Carroll MW, Matthews I, Thomas H. Corrigendum: Inhibition of phosphodiesterase 12 results in antiviral activity against several RNA viruses including SARS-CoV-2. J Gen Virol 2023; 104. [PMID: 37493135 DOI: 10.1099/jgv.0.001876] [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: 07/27/2023] Open
Affiliation(s)
- Mark Thursz
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W2 1NY, UK
| | - Fouzia Sadiq
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W2 1NY, UK
- Present address: Directorate of Research, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Julia A Tree
- UK Health Security Agency, Porton Down, Salisbury, SP4 0JG, UK
| | - Peter Karayiannis
- University of Nicosia Medical School, Nicosia, Cyprus
- RioTech Pharmaceuticals, 49 Arrivato Plaza, St Helens, WA10 1GH, UK
| | - David W C Beasley
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
- Centre for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
| | | | | | - Gavin Screaton
- Medical Science Division, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK
| | - Matthew Wand
- UK Health Security Agency, Porton Down, Salisbury, SP4 0JG, UK
| | | | - Miles W Carroll
- UK Health Security Agency, Porton Down, Salisbury, SP4 0JG, UK
| | - Ian Matthews
- RioTech Pharmaceuticals, 49 Arrivato Plaza, St Helens, WA10 1GH, UK
| | - Howard Thomas
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W2 1NY, UK
- RioTech Pharmaceuticals, 49 Arrivato Plaza, St Helens, WA10 1GH, UK
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Thursz M, Sadiq F, Tree JA, Karayiannis P, Beasley DWC, Dejnirattisai W, Mongkolsapaya J, Screaton G, Wand M, Elmore MJ, Carroll MW, Matthews I, Thomas H. Inhibition of phosphodiesterase 12 results in antiviral activity against several RNA viruses including SARS-CoV-2. J Gen Virol 2023; 104. [PMID: 37432877 DOI: 10.1099/jgv.0.001865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023] Open
Abstract
The 2',5'- oligoadenylate synthetase (OAS) - ribonuclease L (RNAseL) - phosphodiesterase 12 (PDE12) pathway is an essential interferon-induced effector mechanism against RNA virus infection. Inhibition of PDE12 leads to selective amplification of RNAseL activity in infected cells. We aimed to investigate PDE12 as a potential pan-RNA virus antiviral drug target and develop PDE12 inhibitors that elicit antiviral activity against a range of viruses. A library of 18 000 small molecules was screened for PDE12 inhibitor activity using a fluorescent probe specific for PDE12. The lead compounds (CO-17 or CO-63) were tested in cell-based antiviral assays using encephalomyocarditis virus (EMCV), hepatitis C virus (HCV), dengue virus (DENV), West Nile virus (WNV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), in vitro. Cross reactivity of PDE12 inhibitors with other PDEs and in vivo toxicity were measured. In EMCV assays, CO-17 potentiated the effect of IFNα by 3 log10. The compounds were selective for PDE12 when tested against a panel of other PDEs and non-toxic at up to 42 mg kg-1 in rats in vivo. Thus, we have identified PDE12 inhibitors (CO-17 and CO-63), and established the principle that inhibitors of PDE12 have antiviral properties. Early studies suggest these PDE12 inhibitors are well tolerated at the therapeutic range, and reduce viral load in studies of DENV, HCV, WNV and SARS-CoV-2 in human cells and WNV in a mouse model.
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Affiliation(s)
- Mark Thursz
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W2 1NY, UK
| | - Fouzia Sadiq
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W2 1NY, UK
- Present address: Directorate of Research, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Julia A Tree
- UK Health Security Agency, Porton Down, Salisbury, SP4 0JG, UK
| | - Peter Karayiannis
- University of Nicosia Medical School, Nicosia, Cyprus
- RioTech Pharmaceuticals, 49 Arrivato Plaza, St Helens, WA10 1GH, UK
| | - David W C Beasley
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
- Centre for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555-1019, USA
| | | | | | - Gavin Screaton
- Medical Science Division, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK
| | - Matthew Wand
- UK Health Security Agency, Porton Down, Salisbury, SP4 0JG, UK
| | | | - Miles W Carroll
- UK Health Security Agency, Porton Down, Salisbury, SP4 0JG, UK
| | - Ian Matthews
- RioTech Pharmaceuticals, 49 Arrivato Plaza, St Helens, WA10 1GH, UK
| | - Howard Thomas
- Department of Metabolism, Digestion and Reproduction, Imperial College, London W2 1NY, UK
- RioTech Pharmaceuticals, 49 Arrivato Plaza, St Helens, WA10 1GH, UK
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Girardi F, Matz M, Stiller C, You H, Marcos Gragera R, Valkov MY, Bulliard JL, De P, Morrison D, Wanner M, O'Brian DK, Saint-Jacques N, Coleman MP, Allemani C, Hamdi-Chérif M, Kara L, Meguenni K, Regagba D, Bayo S, Cheick Bougadari T, Manraj SS, Bendahhou K, Ladipo A, Ogunbiyi OJ, Somdyala NIM, Chaplin MA, Moreno F, Calabrano GH, Espinola SB, Carballo Quintero B, Fita R, Laspada WD, Ibañez SG, Lima CA, Da Costa AM, De Souza PCF, Chaves J, Laporte CA, Curado MP, de Oliveira JC, Veneziano CLA, Veneziano DB, Almeida ABM, Latorre MRDO, Rebelo MS, Santos MO, Azevedo e Silva G, Galaz JC, Aparicio Aravena M, Sanhueza Monsalve J, Herrmann DA, Vargas S, Herrera VM, Uribe CJ, Bravo LE, Garcia LS, Arias-Ortiz NE, Morantes D, Jurado DM, Yépez Chamorro MC, Delgado S, Ramirez M, Galán Alvarez YH, Torres P, Martínez-Reyes F, Jaramillo L, Quinto R, Castillo J, Mendoza M, Cueva P, Yépez JG, Bhakkan B, Deloumeaux J, Joachim C, Macni J, Carrillo R, Shalkow Klincovstein J, Rivera Gomez R, Perez P, Poquioma E, Tortolero-Luna G, Zavala D, Alonso R, Barrios E, Eckstrand A, Nikiforuk C, Woods RR, Noonan G, Turner D, Kumar E, Zhang B, Dowden JJ, Doyle GP, Saint-Jacques N, Walsh G, Anam A, De P, McClure CA, Vriends KA, Bertrand C, Ramanakumar AV, Davis L, Kozie S, Freeman T, George JT, Avila RM, O’Brien DK, Holt A, Almon L, Kwong S, Morris C, Rycroft R, Mueller L, Phillips CE, Brown H, Cromartie B, Ruterbusch J, Schwartz AG, Levin GM, Wohler B, Bayakly R, Ward KC, Gomez SL, McKinley M, Cress R, Davis J, Hernandez B, Johnson CJ, Morawski BM, Ruppert LP, Bentler S, Charlton ME, Huang B, Tucker TC, Deapen D, Liu L, Hsieh MC, Wu XC, Schwenn M, Stern K, Gershman ST, Knowlton RC, Alverson G, Weaver T, Desai J, Rogers DB, Jackson-Thompson J, Lemons D, Zimmerman HJ, Hood M, Roberts-Johnson J, Hammond W, Rees JR, Pawlish KS, Stroup A, Key C, Wiggins C, Kahn AR, Schymura MJ, Radhakrishnan S, Rao C, Giljahn LK, Slocumb RM, Dabbs C, Espinoza RE, Aird KG, Beran T, Rubertone JJ, Slack SJ, Oh J, Janes TA, Schwartz SM, Chiodini SC, Hurley DM, Whiteside MA, Rai S, Williams MA, Herget K, Sweeney C, Kachajian J, Keitheri Cheteri MB, Migliore Santiago P, Blankenship SE, Conaway JL, Borchers R, Malicki R, Espinoza J, Grandpre J, Weir HK, Wilson R, Edwards BK, Mariotto A, Rodriguez-Galindo C, Wang N, Yang L, Chen JS, Zhou Y, He YT, Song GH, Gu XP, Mei D, Mu HJ, Ge HM, Wu TH, Li YY, Zhao DL, Jin F, Zhang JH, Zhu FD, Junhua Q, Yang YL, Jiang CX, Biao W, Wang J, Li QL, Yi H, Zhou X, Dong J, Li W, Fu FX, Liu SZ, Chen JG, Zhu J, Li YH, Lu YQ, Fan M, Huang SQ, Guo GP, Zhaolai H, Wei K, Chen WQ, Wei W, Zeng H, Demetriou AV, Mang WK, Ngan KC, Kataki AC, Krishnatreya M, Jayalekshmi PA, Sebastian P, George PS, Mathew A, Nandakumar A, Malekzadeh R, Roshandel G, Keinan-Boker L, Silverman BG, Ito H, Koyanagi Y, Sato M, Tobori F, Nakata I, Teramoto N, Hattori M, Kaizaki Y, Moki F, Sugiyama H, Utada M, Nishimura M, Yoshida K, Kurosawa K, Nemoto Y, Narimatsu H, Sakaguchi M, Kanemura S, Naito M, Narisawa R, Miyashiro I, Nakata K, Mori D, Yoshitake M, Oki I, Fukushima N, Shibata A, Iwasa K, Ono C, Matsuda T, Nimri O, Jung KW, Won YJ, Alawadhi E, Elbasmi A, Ab Manan A, Adam F, Nansalmaa E, Tudev U, Ochir C, Al Khater AM, El Mistiri MM, Lim GH, Teo YY, Chiang CJ, Lee WC, Buasom R, Sangrajrang S, Suwanrungruang K, Vatanasapt P, Daoprasert K, Pongnikorn D, Leklob A, Sangkitipaiboon S, Geater SL, Sriplung H, Ceylan O, Kög I, Dirican O, Köse T, Gurbuz T, Karaşahin FE, Turhan D, Aktaş U, Halat Y, Eser S, Yakut CI, Altinisik M, Cavusoglu Y, Türkköylü A, Üçüncü N, Hackl M, Zborovskaya AA, Aleinikova OV, Henau K, Van Eycken L, Atanasov TY, Valerianova Z, Šekerija M, Dušek L, Zvolský M, Steinrud Mørch L, Storm H, Wessel Skovlund C, Innos K, Mägi M, Malila N, Seppä K, Jégu J, Velten M, Cornet E, Troussard X, Bouvier AM, Guizard AV, Bouvier V, Launoy G, Dabakuyo Yonli S, Poillot ML, Maynadié M, Mounier M, Vaconnet L, Woronoff AS, Daoulas M, Robaszkiewicz M, Clavel J, Poulalhon C, Desandes E, Lacour B, Baldi I, Amadeo B, Coureau G, Monnereau A, Orazio S, Audoin M, D’Almeida TC, Boyer S, Hammas K, Trétarre B, Colonna M, Delafosse P, Plouvier S, Cowppli-Bony A, Molinié F, Bara S, Ganry O, Lapôtre-Ledoux B, Daubisse-Marliac L, Bossard N, Uhry Z, Estève J, Stabenow R, Wilsdorf-Köhler H, Eberle A, Luttmann S, Löhden I, Nennecke AL, Kieschke J, Sirri E, Justenhoven C, Reinwald F, Holleczek B, Eisemann N, Katalinic A, Asquez RA, Kumar V, Petridou E, Ólafsdóttir EJ, Tryggvadóttir L, Murray DE, Walsh PM, Sundseth H, Harney M, Mazzoleni G, Vittadello F, Coviello E, Cuccaro F, Galasso R, Sampietro G, Giacomin A, Magoni M, Ardizzone A, D’Argenzio A, Di Prima AA, Ippolito A, Lavecchia AM, Sutera Sardo A, Gola G, Ballotari P, Giacomazzi E, Ferretti S, Dal Maso L, Serraino D, Celesia MV, Filiberti RA, Pannozzo F, Melcarne A, Quarta F, Andreano A, Russo AG, Carrozzi G, Cirilli C, Cavalieri d’Oro L, Rognoni M, Fusco M, Vitale MF, Usala M, Cusimano R, Mazzucco W, Michiara M, Sgargi P, Boschetti L, Marguati S, Chiaranda G, Seghini P, Maule MM, Merletti F, Spata E, Tumino R, Mancuso P, Cassetti T, Sassatelli R, Falcini F, Giorgetti S, Caiazzo AL, Cavallo R, Piras D, Bella F, Madeddu A, Fanetti AC, Maspero S, Carone S, Mincuzzi A, Candela G, Scuderi T, Gentilini MA, Rizzello R, Rosso S, Caldarella A, Intrieri T, Bianconi F, Contiero P, Tagliabue G, Rugge M, Zorzi M, Beggiato S, Brustolin A, Gatta G, De Angelis R, Vicentini M, Zanetti R, Stracci F, Maurina A, Oniščuka M, Mousavi M, Steponaviciene L, Vincerževskienė I, Azzopardi MJ, Calleja N, Siesling S, Visser O, Johannesen TB, Larønningen S, Trojanowski M, Macek P, Mierzwa T, Rachtan J, Rosińska A, Kępska K, Kościańska B, Barna K, Sulkowska U, Gebauer T, Łapińska JB, Wójcik-Tomaszewska J, Motnyk M, Patro A, Gos A, Sikorska K, Bielska-Lasota M, Didkowska JA, Wojciechowska U, Forjaz de Lacerda G, Rego RA, Carrito B, Pais A, Bento MJ, Rodrigues J, Lourenço A, Mayer-da-Silva A, Coza D, Todescu AI, Valkov MY, Gusenkova L, Lazarevich O, Prudnikova O, Vjushkov DM, Egorova A, Orlov A, Pikalova LV, Zhuikova LD, Adamcik J, Safaei Diba C, Zadnik V, Žagar T, De-La-Cruz M, Lopez-de-Munain A, Aleman A, Rojas D, Chillarón RJ, Navarro AIM, Marcos-Gragera R, Puigdemont M, Rodríguez-Barranco M, Sánchez Perez MJ, Franch Sureda P, Ramos Montserrat M, Chirlaque López MD, Sánchez Gil A, Ardanaz E, Guevara M, Cañete-Nieto A, Peris-Bonet R, Carulla M, Galceran J, Almela F, Sabater C, Khan S, Pettersson D, Dickman P, Staehelin K, Struchen B, Egger Hayoz C, Rapiti E, Schaffar R, Went P, Mousavi SM, Bulliard JL, Maspoli-Conconi M, Kuehni CE, Redmond SM, Bordoni A, Ortelli L, Chiolero A, Konzelmann I, Rohrmann S, Wanner M, Broggio J, Rashbass J, Stiller C, Fitzpatrick D, Gavin A, Morrison DS, Thomson CS, Greene G, Huws DW, Grayson M, Rawcliffe H, Allemani C, Coleman MP, Di Carlo V, Girardi F, Matz M, Minicozzi P, Sanz N, Ssenyonga N, James D, Stephens R, Chalker E, Smith M, Gugusheff J, You H, Qin Li S, Dugdale S, Moore J, Philpot S, Pfeiffer R, Thomas H, Silva Ragaini B, Venn AJ, Evans SM, Te Marvelde L, Savietto V, Trevithick R, Aitken J, Currow D, Fowler C, Lewis C. Global survival trends for brain tumors, by histology: analysis of individual records for 556,237 adults diagnosed in 59 countries during 2000-2014 (CONCORD-3). Neuro Oncol 2023; 25:580-592. [PMID: 36355361 PMCID: PMC10013649 DOI: 10.1093/neuonc/noac217] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Survival is a key metric of the effectiveness of a health system in managing cancer. We set out to provide a comprehensive examination of worldwide variation and trends in survival from brain tumors in adults, by histology. METHODS We analyzed individual data for adults (15-99 years) diagnosed with a brain tumor (ICD-O-3 topography code C71) during 2000-2014, regardless of tumor behavior. Data underwent a 3-phase quality control as part of CONCORD-3. We estimated net survival for 11 histology groups, using the unbiased nonparametric Pohar Perme estimator. RESULTS The study included 556,237 adults. In 2010-2014, the global range in age-standardized 5-year net survival for the most common sub-types was broad: in the range 20%-38% for diffuse and anaplastic astrocytoma, from 4% to 17% for glioblastoma, and between 32% and 69% for oligodendroglioma. For patients with glioblastoma, the largest gains in survival occurred between 2000-2004 and 2005-2009. These improvements were more noticeable among adults diagnosed aged 40-70 years than among younger adults. CONCLUSIONS To the best of our knowledge, this study provides the largest account to date of global trends in population-based survival for brain tumors by histology in adults. We have highlighted remarkable gains in 5-year survival from glioblastoma since 2005, providing large-scale empirical evidence on the uptake of chemoradiation at population level. Worldwide, survival improvements have been extensive, but some countries still lag behind. Our findings may help clinicians involved in national and international tumor pathway boards to promote initiatives aimed at more extensive implementation of clinical guidelines.
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Affiliation(s)
- Fabio Girardi
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK.,Cancer Division, University College London Hospitals NHS Foundation Trust, London, UK.,Division of Medical Oncology 2, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - Melissa Matz
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK
| | - Charles Stiller
- National Cancer Registration and Analysis Service, Public Health England, London, UK
| | - Hui You
- Cancer Information Analysis Unit, Cancer Institute NSW, St Leonards, New South Wales, Australia
| | - Rafael Marcos Gragera
- Epidemiology Unit and Girona Cancer Registry, Catalan Institute of Oncology, Girona, Spain
| | - Mikhail Y Valkov
- Department of Radiology, Radiotherapy and Oncology, Northern State Medical University, Arkhangelsk, Russia
| | - Jean-Luc Bulliard
- Centre for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland.,Neuchâtel and Jura Tumour Registry, Neuchâtel, Switzerland
| | - Prithwish De
- Surveillance and Cancer Registry, and Research Office, Clinical Institutes and Quality Programs, Ontario Health, Toronto, Ontario, Canada
| | - David Morrison
- Scottish Cancer Registry, Public Health Scotland, Edinburgh, UK
| | - Miriam Wanner
- Cancer Registry Zürich, Zug, Schaffhausen and Schwyz, University Hospital Zürich, Zürich, Switzerland
| | - David K O'Brian
- Alaska Cancer Registry, Alaska Department of Health and Social Services, Anchorage, Alaska, USA
| | - Nathalie Saint-Jacques
- Department of Medicine and Community Health and Epidemiology, Centre for Clinical Research, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michel P Coleman
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK.,Cancer Division, University College London Hospitals NHS Foundation Trust, London, UK
| | - Claudia Allemani
- Cancer Survival Group, London School of Hygiene and Tropical Medicine, London, UK
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Thomas H, Naidoo K, Engel-Hills P. Resilience from the perspective of diagnostic radiography students. Radiography (Lond) 2023; 29:56-61. [PMID: 36327515 DOI: 10.1016/j.radi.2022.10.001] [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: 08/19/2022] [Revised: 09/30/2022] [Accepted: 10/03/2022] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Resilience is a concept associated with the ability to overcome, adapt, and recover from stressors. The radiography profession is known to be stressful, and one can reason that radiographers must be resilient in order to cope with the clinical environment. Research shows there are varied understandings of resilience. However, little is known about the concept of resilience specifically as it relates to the perspectives of diagnostic radiography students within the clinical workplace. This paper reports on one aspect of a comprehensive study of resilience amongst radiography students. The objective of this paper is, therefore, to present the exploration of the concept of resilience drawing from the data gathered from first-year diagnostic radiography students. METHODS A qualitative, explorative, descriptive and contextual approach was adopted for this study. Qualitative data was collected through focus group interviews. A purposive sampling method was employed, selecting from first-year diagnostic radiography students at a University of Technology (UoT) in the Western Cape, South Africa. Interviews were audio-recorded transcribed and thematically analysed. Data was collected until saturation was reached. RESULTS The meaning of resilience as explained from the perspective of radiography students included three subthemes namely: (1) fundamentals of resilience; (2) external protective factors and (3) internal protective factors. CONCLUSION This study demonstrated that radiography students associated resilience with positive attributes. Furthermore, the study identified various resilience enhancement strategies to better support diagnostic radiography students in the clinical environment like supportive radiographers and talking to peers. IMPLICATIONS FOR PRACTICE The identification of resilience enhancement strategies is important as it will assist with the introduction of curriculum renewal initiatives tailored to support first-year diagnostic radiography students as they develop their resilience to stressors in the clinical environment.
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Affiliation(s)
- H Thomas
- Cape Peninsula University of Technology, Medical Imaging and Therapeutic Sciences, Bellville, 7530, South Africa.
| | - K Naidoo
- Cape Peninsula University of Technology, Medical Imaging and Therapeutic Sciences, Bellville, 7530, South Africa
| | - P Engel-Hills
- Cape Peninsula University of Technology, Medical Imaging and Therapeutic Sciences, Bellville, 7530, South Africa
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Schmidt L, Stickan-Verfürth M, Schuckel S, Thomas H, Calaminus G, Timmermann B. Radiotherapy within the interdisciplinary treatment strategy for pediatric extracranial germ cell tumors. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.09.025] [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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Thomas H, Miao X, Ferguson D, Krishnamurthy U, Feng M, Scholey J. Contrast-Enhanced 4D MRI for Internal Target Volume Generation in Treatment Planning for Liver Tumors. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.2192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Bice B, Bryson D, Thomas H, Deschamp A. 345 Improving nutrition knowledge in children with cystic fibrosis and their caregivers using Cystic Fibrosis Foundation–approved education materials. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01035-9] [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: 11/06/2022]
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Proietti M, Romiti GF, Vitolo M, Harrison SL, Lane DA, Fauchier L, Marin F, Näbauer M, Potpara TS, Dan GA, Maggioni AP, Cesari M, Boriani G, Lip GYH, Ekmekçiu U, Paparisto V, Tase M, Gjergo H, Dragoti J, Goda A, Ciutea M, Ahadi N, el Husseini Z, Raepers M, Leroy J, Haushan P, Jourdan A, Lepiece C, Desteghe L, Vijgen J, Koopman P, Van Genechten G, Heidbuchel H, Boussy T, De Coninck M, Van Eeckhoutte H, Bouckaert N, Friart A, Boreux J, Arend C, Evrard P, Stefan L, Hoffer E, Herzet J, Massoz M, Celentano C, Sprynger M, Pierard L, Melon P, Van Hauwaert B, Kuppens C, Faes D, Van Lier D, Van Dorpe A, Gerardy A, Deceuninck O, Xhaet O, Dormal F, Ballant E, Blommaert D, Yakova D, Hristov M, Yncheva T, Stancheva N, Tisheva S, Tokmakova M, Nikolov F, Gencheva D, Shalganov T, Kunev B, Stoyanov M, Marchov D, Gelev V, Traykov V, Kisheva A, Tsvyatkov H, Shtereva R, Bakalska-Georgieva S, Slavcheva S, Yotov Y, Kubíčková M, Marni Joensen A, Gammelmark A, Hvilsted Rasmussen L, Dinesen P, Riahi S, Krogh Venø S, Sorensen B, Korsgaard A, Andersen K, Fragtrup Hellum C, Svenningsen A, Nyvad O, Wiggers P, May O, Aarup A, Graversen B, Jensen L, Andersen M, Svejgaard M, Vester S, Hansen S, Lynggaard V, Ciudad M, Vettus R, Muda P, Maestre A, Castaño S, Cheggour S, Poulard J, Mouquet V, Leparrée S, Bouet J, Taieb J, Doucy A, Duquenne H, Furber A, Dupuis J, Rautureau J, Font M, Damiano P, Lacrimini M, Abalea J, Boismal S, Menez T, Mansourati J, Range G, Gorka H, Laure C, Vassalière C, Elbaz N, Lellouche N, Djouadi K, Roubille F, Dietz D, Davy J, Granier M, Winum P, Leperchois-Jacquey C, Kassim H, Marijon E, Le Heuzey J, Fedida J, Maupain C, Himbert C, Gandjbakhch E, Hidden-Lucet F, Duthoit G, Badenco N, Chastre T, Waintraub X, Oudihat M, Lacoste J, Stephan C, Bader H, Delarche N, Giry L, Arnaud D, Lopez C, Boury F, Brunello I, Lefèvre M, Mingam R, Haissaguerre M, Le Bidan M, Pavin D, Le Moal V, Leclercq C, Piot O, Beitar T, Martel I, Schmid A, Sadki N, Romeyer-Bouchard C, Da Costa A, Arnault I, Boyer M, Piat C, Fauchier L, Lozance N, Nastevska S, Doneva A, Fortomaroska Milevska B, Sheshoski B, Petroska K, Taneska N, Bakrecheski N, Lazarovska K, Jovevska S, Ristovski V, Antovski A, Lazarova E, Kotlar I, Taleski J, Poposka L, Kedev S, Zlatanovik N, Jordanova S, Bajraktarova Proseva T, Doncovska S, Maisuradze D, Esakia A, Sagirashvili E, Lartsuliani K, Natelashvili N, Gumberidze N, Gvenetadze R, Etsadashvili K, Gotonelia N, Kuridze N, Papiashvili G, Menabde I, Glöggler S, Napp A, Lebherz C, Romero H, Schmitz K, Berger M, Zink M, Köster S, Sachse J, Vonderhagen E, Soiron G, Mischke K, Reith R, Schneider M, Rieker W, Boscher D, Taschareck A, Beer A, Oster D, Ritter O, Adamczewski J, Walter S, Frommhold A, Luckner E, Richter J, Schellner M, Landgraf S, Bartholome S, Naumann R, Schoeler J, Westermeier D, William F, Wilhelm K, Maerkl M, Oekinghaus R, Denart M, Kriete M, Tebbe U, Scheibner T, Gruber M, Gerlach A, Beckendorf C, Anneken L, Arnold M, Lengerer S, Bal Z, Uecker C, Förtsch H, Fechner S, Mages V, Martens E, Methe H, Schmidt T, Schaeffer B, Hoffmann B, Moser J, Heitmann K, Willems S, Willems S, Klaus C, Lange I, Durak M, Esen E, Mibach F, Mibach H, Utech A, Gabelmann M, Stumm R, Ländle V, Gartner C, Goerg C, Kaul N, Messer S, Burkhardt D, Sander C, Orthen R, Kaes S, Baumer A, Dodos F, Barth A, Schaeffer G, Gaertner J, Winkler J, Fahrig A, Aring J, Wenzel I, Steiner S, Kliesch A, Kratz E, Winter K, Schneider P, Haag A, Mutscher I, Bosch R, Taggeselle J, Meixner S, Schnabel A, Shamalla A, Hötz H, Korinth A, Rheinert C, Mehltretter G, Schön B, Schön N, Starflinger A, Englmann E, Baytok G, Laschinger T, Ritscher G, Gerth A, Dechering D, Eckardt L, Kuhlmann M, Proskynitopoulos N, Brunn J, Foth K, Axthelm C, Hohensee H, Eberhard K, Turbanisch S, Hassler N, Koestler A, Stenzel G, Kschiwan D, Schwefer M, Neiner S, Hettwer S, Haeussler-Schuchardt M, Degenhardt R, Sennhenn S, Steiner S, Brendel M, Stoehr A, Widjaja W, Loehndorf S, Logemann A, Hoskamp J, Grundt J, Block M, Ulrych R, Reithmeier A, Panagopoulos V, Martignani C, Bernucci D, Fantecchi E, Diemberger I, Ziacchi M, Biffi M, Cimaglia P, Frisoni J, Boriani G, Giannini I, Boni S, Fumagalli S, Pupo S, Di Chiara A, Mirone P, Fantecchi E, Boriani G, Pesce F, Zoccali C, Malavasi VL, Mussagaliyeva A, Ahyt B, Salihova Z, Koshum-Bayeva K, Kerimkulova A, Bairamukova A, Mirrakhimov E, Lurina B, Zuzans R, Jegere S, Mintale I, Kupics K, Jubele K, Erglis A, Kalejs O, Vanhear K, Burg M, Cachia M, Abela E, Warwicker S, Tabone T, Xuereb R, Asanovic D, Drakalovic D, Vukmirovic M, Pavlovic N, Music L, Bulatovic N, Boskovic A, Uiterwaal H, Bijsterveld N, De Groot J, Neefs J, van den Berg N, Piersma F, Wilde A, Hagens V, Van Es J, Van Opstal J, Van Rennes B, Verheij H, Breukers W, Tjeerdsma G, Nijmeijer R, Wegink D, Binnema R, Said S, Erküner Ö, Philippens S, van Doorn W, Crijns H, Szili-Torok T, Bhagwandien R, Janse P, Muskens A, van Eck M, Gevers R, van der Ven N, Duygun A, Rahel B, Meeder J, Vold A, Holst Hansen C, Engset I, Atar D, Dyduch-Fejklowicz B, Koba E, Cichocka M, Sokal A, Kubicius A, Pruchniewicz E, Kowalik-Sztylc A, Czapla W, Mróz I, Kozlowski M, Pawlowski T, Tendera M, Winiarska-Filipek A, Fidyk A, Slowikowski A, Haberka M, Lachor-Broda M, Biedron M, Gasior Z, Kołodziej M, Janion M, Gorczyca-Michta I, Wozakowska-Kaplon B, Stasiak M, Jakubowski P, Ciurus T, Drozdz J, Simiera M, Zajac P, Wcislo T, Zycinski P, Kasprzak J, Olejnik A, Harc-Dyl E, Miarka J, Pasieka M, Ziemińska-Łuć M, Bujak W, Śliwiński A, Grech A, Morka J, Petrykowska K, Prasał M, Hordyński G, Feusette P, Lipski P, Wester A, Streb W, Romanek J, Woźniak P, Chlebuś M, Szafarz P, Stanik W, Zakrzewski M, Kaźmierczak J, Przybylska A, Skorek E, Błaszczyk H, Stępień M, Szabowski S, Krysiak W, Szymańska M, Karasiński J, Blicharz J, Skura M, Hałas K, Michalczyk L, Orski Z, Krzyżanowski K, Skrobowski A, Zieliński L, Tomaszewska-Kiecana M, Dłużniewski M, Kiliszek M, Peller M, Budnik M, Balsam P, Opolski G, Tymińska A, Ozierański K, Wancerz A, Borowiec A, Majos E, Dabrowski R, Szwed H, Musialik-Lydka A, Leopold-Jadczyk A, Jedrzejczyk-Patej E, Koziel M, Lenarczyk R, Mazurek M, Kalarus Z, Krzemien-Wolska K, Starosta P, Nowalany-Kozielska E, Orzechowska A, Szpot M, Staszel M, Almeida S, Pereira H, Brandão Alves L, Miranda R, Ribeiro L, Costa F, Morgado F, Carmo P, Galvao Santos P, Bernardo R, Adragão P, Ferreira da Silva G, Peres M, Alves M, Leal M, Cordeiro A, Magalhães P, Fontes P, Leão S, Delgado A, Costa A, Marmelo B, Rodrigues B, Moreira D, Santos J, Santos L, Terchet A, Darabantiu D, Mercea S, Turcin Halka V, Pop Moldovan A, Gabor A, Doka B, Catanescu G, Rus H, Oboroceanu L, Bobescu E, Popescu R, Dan A, Buzea A, Daha I, Dan G, Neuhoff I, Baluta M, Ploesteanu R, Dumitrache N, Vintila M, Daraban A, Japie C, Badila E, Tewelde H, Hostiuc M, Frunza S, Tintea E, Bartos D, Ciobanu A, Popescu I, Toma N, Gherghinescu C, Cretu D, Patrascu N, Stoicescu C, Udroiu C, Bicescu G, Vintila V, Vinereanu D, Cinteza M, Rimbas R, Grecu M, Cozma A, Boros F, Ille M, Tica O, Tor R, Corina A, Jeewooth A, Maria B, Georgiana C, Natalia C, Alin D, Dinu-Andrei D, Livia M, Daniela R, Larisa R, Umaar S, Tamara T, Ioachim Popescu M, Nistor D, Sus I, Coborosanu O, Alina-Ramona N, Dan R, Petrescu L, Ionescu G, Popescu I, Vacarescu C, Goanta E, Mangea M, Ionac A, Mornos C, Cozma D, Pescariu S, Solodovnicova E, Soldatova I, Shutova J, Tjuleneva L, Zubova T, Uskov V, Obukhov D, Rusanova G, Soldatova I, Isakova N, Odinsova S, Arhipova T, Kazakevich E, Serdechnaya E, Zavyalova O, Novikova T, Riabaia I, Zhigalov S, Drozdova E, Luchkina I, Monogarova Y, Hegya D, Rodionova L, Rodionova L, Nevzorova V, Soldatova I, Lusanova O, Arandjelovic A, Toncev D, Milanov M, Sekularac N, Zdravkovic M, Hinic S, Dimkovic S, Acimovic T, Saric J, Polovina M, Potpara T, Vujisic-Tesic B, Nedeljkovic M, Zlatar M, Asanin M, Vasic V, Popovic Z, Djikic D, Sipic M, Peric V, Dejanovic B, Milosevic N, Stevanovic A, Andric A, Pencic B, Pavlovic-Kleut M, Celic V, Pavlovic M, Petrovic M, Vuleta M, Petrovic N, Simovic S, Savovic Z, Milanov S, Davidovic G, Iric-Cupic V, Simonovic D, Stojanovic M, Stojanovic S, Mitic V, Ilic V, Petrovic D, Deljanin Ilic M, Ilic S, Stoickov V, Markovic S, Kovacevic S, García Fernandez A, Perez Cabeza A, Anguita M, Tercedor Sanchez L, Mau E, Loayssa J, Ayarra M, Carpintero M, Roldán Rabadan I, Leal M, Gil Ortega M, Tello Montoliu A, Orenes Piñero E, Manzano Fernández S, Marín F, Romero Aniorte A, Veliz Martínez A, Quintana Giner M, Ballesteros G, Palacio M, Alcalde O, García-Bolao I, Bertomeu Gonzalez V, Otero-Raviña F, García Seara J, Gonzalez Juanatey J, Dayal N, Maziarski P, Gentil-Baron P, Shah D, Koç M, Onrat E, Dural IE, Yilmaz K, Özin B, Tan Kurklu S, Atmaca Y, Canpolat U, Tokgozoglu L, Dolu AK, Demirtas B, Sahin D, Ozcan Celebi O, Diker E, Gagirci G, Turk UO, Ari H, Polat N, Toprak N, Sucu M, Akin Serdar O, Taha Alper A, Kepez A, Yuksel Y, Uzunselvi A, Yuksel S, Sahin M, Kayapinar O, Ozcan T, Kaya H, Yilmaz MB, Kutlu M, Demir M, Gibbs C, Kaminskiene S, Bryce M, Skinner A, Belcher G, Hunt J, Stancombe L, Holbrook B, Peters C, Tettersell S, Shantsila A, Lane D, Senoo K, Proietti M, Russell K, Domingos P, Hussain S, Partridge J, Haynes R, Bahadur S, Brown R, McMahon S, Y H Lip G, McDonald J, Balachandran K, Singh R, Garg S, Desai H, Davies K, Goddard W, Galasko G, Rahman I, Chua Y, Payne O, Preston S, Brennan O, Pedley L, Whiteside C, Dickinson C, Brown J, Jones K, Benham L, Brady R, Buchanan L, Ashton A, Crowther H, Fairlamb H, Thornthwaite S, Relph C, McSkeane A, Poultney U, Kelsall N, Rice P, Wilson T, Wrigley M, Kaba R, Patel T, Young E, Law J, Runnett C, Thomas H, McKie H, Fuller J, Pick S, Sharp A, Hunt A, Thorpe K, Hardman C, Cusack E, Adams L, Hough M, Keenan S, Bowring A, Watts J, Zaman J, Goffin K, Nutt H, Beerachee Y, Featherstone J, Mills C, Pearson J, Stephenson L, Grant S, Wilson A, Hawksworth C, Alam I, Robinson M, Ryan S, Egdell R, Gibson E, Holland M, Leonard D, Mishra B, Ahmad S, Randall H, Hill J, Reid L, George M, McKinley S, Brockway L, Milligan W, Sobolewska J, Muir J, Tuckis L, Winstanley L, Jacob P, Kaye S, Morby L, Jan A, Sewell T, Boos C, Wadams B, Cope C, Jefferey P, Andrews N, Getty A, Suttling A, Turner C, Hudson K, Austin R, Howe S, Iqbal R, Gandhi N, Brophy K, Mirza P, Willard E, Collins S, Ndlovu N, Subkovas E, Karthikeyan V, Waggett L, Wood A, Bolger A, Stockport J, Evans L, Harman E, Starling J, Williams L, Saul V, Sinha M, Bell L, Tudgay S, Kemp S, Brown J, Frost L, Ingram T, Loughlin A, Adams C, Adams M, Hurford F, Owen C, Miller C, Donaldson D, Tivenan H, Button H, Nasser A, Jhagra O, Stidolph B, Brown C, Livingstone C, Duffy M, Madgwick P, Roberts P, Greenwood E, Fletcher L, Beveridge M, Earles S, McKenzie D, Beacock D, Dayer M, Seddon M, Greenwell D, Luxton F, Venn F, Mills H, Rewbury J, James K, Roberts K, Tonks L, Felmeden D, Taggu W, Summerhayes A, Hughes D, Sutton J, Felmeden L, Khan M, Walker E, Norris L, O’Donohoe L, Mozid A, Dymond H, Lloyd-Jones H, Saunders G, Simmons D, Coles D, Cotterill D, Beech S, Kidd S, Wrigley B, Petkar S, Smallwood A, Jones R, Radford E, Milgate S, Metherell S, Cottam V, Buckley C, Broadley A, Wood D, Allison J, Rennie K, Balian L, Howard L, Pippard L, Board S, Pitt-Kerby T. Epidemiology and impact of frailty in patients with atrial fibrillation in Europe. Age Ageing 2022; 51:6670566. [PMID: 35997262 DOI: 10.1093/ageing/afac192] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [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: 03/17/2022] [Revised: 06/08/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Frailty is a medical syndrome characterised by reduced physiological reserve and increased vulnerability to stressors. Data regarding the relationship between frailty and atrial fibrillation (AF) are still inconsistent. OBJECTIVES We aim to perform a comprehensive evaluation of frailty in a large European cohort of AF patients. METHODS A 40-item frailty index (FI) was built according to the accumulation of deficits model in the AF patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry. Association of baseline characteristics, clinical management, quality of life, healthcare resources use and risk of outcomes with frailty was examined. RESULTS Among 10,177 patients [mean age (standard deviation) 69.0 (11.4) years, 4,103 (40.3%) females], 6,066 (59.6%) were pre-frail and 2,172 (21.3%) were frail, whereas only 1,939 (19.1%) were considered robust. Baseline thromboembolic and bleeding risks were independently associated with increasing FI. Frail patients with AF were less likely to be treated with oral anticoagulants (OACs) (odds ratio 0.70, 95% confidence interval 0.55-0.89), especially with non-vitamin K antagonist OACs and managed with a rhythm control strategy, compared with robust patients. Increasing frailty was associated with a higher risk for all outcomes examined, with a non-linear exponential relationship. The use of OAC was associated with a lower risk of outcomes, except in patients with very/extremely high frailty. CONCLUSIONS In this large cohort of AF patients, there was a high burden of frailty, influencing clinical management and risk of adverse outcomes. The clinical benefit of OAC is maintained in patients with high frailty, but not in very high/extremely frail ones.
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Affiliation(s)
- Marco Proietti
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Milan, Italy
| | - Giulio Francesco Romiti
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Translational and Precision Medicine, Sapienza - University of Rome, Italy
| | - Marco Vitolo
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy.,Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Stephanie L Harrison
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
| | - Deirdre A Lane
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Laurent Fauchier
- Service de Cardiologie, Centre Hospitalier Universitaire Trousseau, Tours, France
| | - Francisco Marin
- Department of Cardiology, Hospital Universitario Virgen de la Arrixaca, IMIB-Arrixaca, University of Murcia, CIBER-CV, Murcia, Spain
| | - Michael Näbauer
- Department of Cardiology, Ludwig-Maximilians-University, Munich, Germany
| | - Tatjana S Potpara
- School of Medicine, University of Belgrade, Belgrade, Serbia.,Clinical Center of Serbia, Belgrade, Serbia
| | - Gheorghe-Andrei Dan
- University of Medicine, 'Carol Davila', Colentina University Hospital, Bucharest, Romania
| | - Aldo P Maggioni
- ANMCO Research Center, Heart Care Foundation, Florence, Italy
| | - Matteo Cesari
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Milan, Italy
| | - Giuseppe Boriani
- Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Briosa E Gala A, Pope MTP, Leo M, Ormerod J, Field D, Balasubramaniam R, Thomas H, Gardner RS, Hunter R, Gallagher MM, Wilson D, Paisey JR, Curzen NP, Betts TR. Accuracy of AF burden detection with the new Confirm Rx with Sharp-sense technology. Europace 2022. [DOI: 10.1093/europace/euac053.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Implantable cardiac monitors (ICMs) are increasingly used to monitor atrial fibrillation (AF) burden following catheter ablation. AF burden recorded by the Confirm Rx™ ICM cannot be modified even after adjudication of false-positive (FP) episodes. We sought to investigate accuracy of the AF burden detection in a UK cohort.
Methods
This multicentre retrospective study included patients with Confirm Rx™ and at least one episode >6 minutes across 9 UK hospitals. Each episode had a corresponding 120-second EGM (electrogram) and heart rate scatterplot which was considered representative of the whole episode. One cardiologist adjudicated all EGMs as ‘True AF’ or ‘False positive’ and a random sample of 10% was reviewed to account for intra and interobserver variability. AF burden was computed as the duration of all episodes classified as AF by the Confirm-Rx divided by the total duration of follow-up. ‘True-AF’ burden was calculated by dividing the duration of episodes adjudicated as ‘True-AF’ by the total duration of follow-up. We also investigated the accuracy of AF burden according to implantation indication and episode duration.
Results
A total of 16,230 individual AF episodes were included from 232 consecutive patients. Overall, 26,137 hours of AF were recorded and a total follow-up 315 patient-years which equates to an AF burden of 0.95%. However, only 24,404.7 (93.3%) hours represented time in ‘True-AF’ and a ‘True-AF’ burden for the whole cohort of 0.89% (Table 1). Patients with a Confirm-Rx™ for palpitations and suspected AF had the lowest proportion of ‘True-AF’ burden and had a modest contribution to the overall AF burden (Figure 1). Conversely, patients with known AF had the highest proportion of ‘True-AF’ burden recorded. Most AF (84.5%) episodes lasted less than 1 hour with approximately a quarter adjudicated as false-positive detections, but their contribution towards overall AF burden was very small (Figure 2A-2B). In contrast, AF >3 hours accounted for 76.4% of time in AF and the proportion of ‘True-AF’ burden was 98.5%.
Conclusion
The accuracy of the estimated AF burden for the whole cohort was excellent (93.3%), driven by the high proportion of ‘True-AF’ burden in AF>3 hours.
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Affiliation(s)
- A Briosa E Gala
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - MTP Pope
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - M Leo
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - J Ormerod
- Milton Keynes University Hospital NHS Trust, Milton Keynes, United Kingdom of Great Britain & Northern Ireland
| | - D Field
- Essex Cardiothoracic Centre, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - R Balasubramaniam
- University Dorset Hospital, Bournemouth, United Kingdom of Great Britain & Northern Ireland
| | - H Thomas
- Wansbeck General Hospital, Ashington, United Kingdom of Great Britain & Northern Ireland
| | - RS Gardner
- Golden Jubilee National Hospital, Glasgow, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - MM Gallagher
- St George’s University Hospital NHS Foundation Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - D Wilson
- Worcestershire Royal Hospital, Worcester, United Kingdom of Great Britain & Northern Ireland
| | - JR Paisey
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - NP Curzen
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - TR Betts
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
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12
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Briosa E Gala A, Pope MTB, Leo M, Ormerod J, Field D, Balasubramaniam R, Hunter R, Thomas H, Gardner RS, Gallagher MM, Wilson D, Paisey JR, Curzen NP, Betts TR. Diagnostic accuracy of the Confirm-Rx atrial fibrillation detection algorithm in real-world patients. Europace 2022. [DOI: 10.1093/europace/euac053.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Continuous rhythm monitoring with implantable cardiac monitors (ICMs) is commonly used to detect and characterise atrial fibrillation (AF) episodes. The Confirm Rx™ with SharpSense™ technology offers four new discriminators and second pass analysis aimed at enhancing detection and improving accuracy for cardiac arrhythmias. This study sought to investigate the diagnostic accuracy of the Confirm Rx™ AF detection algorithm in a UK cohort of ‘real-world’ patients.
Methods
This multicentre retrospective study included patients with Confirm Rx™ and at least one episode of AF>6 minutes from August 2018 to August 2021 across 9 UK hospitals. Each episode had a corresponding 120-second electrogram (EGM) and heart rate scatterplot. One cardiologist manually adjudicated all EGMs as ‘True-AF’ or ‘False-positive. To assess for intra and inter-observer variability, 10% of the EGMs were reviewed. Diagnostic accuracy was determined by calculating the raw and patient-averaged positive predictive value (PPV) for AF episode of different durations and implant indications.
Results
During the study 232 patients met inclusion criteria with a total of 315 patient-years of follow-up. 16,320 individual AF episodes were adjudicated; intra- and interobserver variability was excellent (Cohen’s kappa 0.85 and 0.86, respectively). The rate of ‘True-AF’ detection was 3.19 episodes per month corresponding to a raw PPV of 74.5% for the whole cohort. The highest number of episodes per months was observed in patients with a Confirm-Rx for palpitations (5.1) and suspected AF (5.8) but only approximately half of these represented ‘True-AF’ episodes (Figure 1). Patients with known AF had the lowest rate of AF episodes (1.6 episodes per month) but the highest proportion of ‘True-AF’ episodes (PPV of 95.5%). A clear trend of improving diagnostic accuracy was seen with longer AF episodes (Table1). AF>3 hours had a PPV above 94% and all episodes lasting longer than 24 hours were ‘True-AF’. For AF episode of short duration, the PPV varied with the population being monitored; however, for longer AF episodes the PPV increased significantly and irrespective of implant indication (Figure 2).
Conclusion
Overall, the Confirm Rx™ ICM diagnostic accuracy was modest for all AF episodes lasting longer than 6 minutes (74.5%) but improved considerably for longer AF episodes irrespective of implant indication.
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Affiliation(s)
- A Briosa E Gala
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - MTB Pope
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - M Leo
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - J Ormerod
- Milton Keynes University Hospital NHS Trust, Milton Keynes, United Kingdom of Great Britain & Northern Ireland
| | - D Field
- Essex Cardiothoracic Centre, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - R Balasubramaniam
- University Dorset Hospital, Bournemouth, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - H Thomas
- Wansbeck General Hospital, Ashington, United Kingdom of Great Britain & Northern Ireland
| | - RS Gardner
- Golden Jubilee National Hospital, Glasgow, United Kingdom of Great Britain & Northern Ireland
| | - MM Gallagher
- St George’s University Hospital NHS Foundation Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - D Wilson
- Worcestershire Royal Hospital, Worcester, United Kingdom of Great Britain & Northern Ireland
| | - JR Paisey
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - NP Curzen
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - TR Betts
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
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Thomas H, Plummer C, Wright IJ, Foley P, Turley AJ. Guidelines for the peri‐operative management of people with cardiac implantable electronic devices. Anaesthesia 2022; 77:808-817. [DOI: 10.1111/anae.15728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/22/2022] [Accepted: 03/16/2022] [Indexed: 12/13/2022]
Affiliation(s)
- H. Thomas
- Department of Cardiology Northumbria Healthcare NHS Foundation Trust Northumberland UK
| | - C. Plummer
- Department of Cardiology Newcastle upon Tyne NHS Foundation Trust Newcastle upon Tyne UK
| | - I. J. Wright
- Department of Cardiology Imperial College Healthcare NHS Foundation Trust London UK
| | - P. Foley
- Department of Cardiology Great Western Hospitals NHS Foundation Trust Swindon UK
| | - A. J. Turley
- Department of Cardiology South Tees NHS Foundation Trust Middlesbrough UK
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Thomas BJ, Fychan R, McCalman HM, Sanderson R, Thomas H, Marley CL. Vicia sativa
as a grazed forage for lactating ewes in a temperate grassland production system. Food Energy Secur 2022. [DOI: 10.1002/fes3.374] [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: 11/11/2022] Open
Affiliation(s)
- Benjamin J. Thomas
- Institute of Biological, Environmental and Rural Sciences (IBERS) Aberystwyth University Gogerddan Ceredigion UK
| | - Rhun Fychan
- Institute of Biological, Environmental and Rural Sciences (IBERS) Aberystwyth University Gogerddan Ceredigion UK
| | - Heather M. McCalman
- Institute of Biological, Environmental and Rural Sciences (IBERS) Aberystwyth University Gogerddan Ceredigion UK
| | - Ruth Sanderson
- Institute of Biological, Environmental and Rural Sciences (IBERS) Aberystwyth University Gogerddan Ceredigion UK
| | - Howard Thomas
- Institute of Biological, Environmental and Rural Sciences (IBERS) Aberystwyth University Gogerddan Ceredigion UK
| | - Christina L. Marley
- Institute of Biological, Environmental and Rural Sciences (IBERS) Aberystwyth University Gogerddan Ceredigion UK
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Thomas H, Boreta L, Braunstein S, Lonergan P, Washington S, Branagan L, Morin O, Yom S, Park C, Odisho A, Hong J. Acclimation to Telehealth in Radiation Oncology During COVID-10 Response: Demographic Trends and Challenges. Int J Radiat Oncol Biol Phys 2021. [PMCID: PMC8536231 DOI: 10.1016/j.ijrobp.2021.07.1013] [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: 10/25/2022]
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Warren B, Henson L, Thomas H, Baclay J, Flores J, Tangco E, Patel S, Sanghvi P, Li B. Establishing Partnerships and Developing Relevant Virtual Curriculum to Augment Contouring Education in Southeast Asia. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chen K, Thomas H, Gottschalk A, Braunstein S. Wound Complications Following Wide Resection and Intraoperative Radiation Therapy for Management of Soft Tissue Sarcoma of the Extremities. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Aubry S, Christ B, Kräutler B, Martinoia E, Thomas H, Zipfel C. An evergreen mind and a heart for the colors of fall. J Exp Bot 2021; 72:4625-4633. [PMID: 33860301 PMCID: PMC8219035 DOI: 10.1093/jxb/erab162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 04/11/2021] [Indexed: 06/01/2023]
Abstract
With the finest biochemical and molecular approaches, convincing explorative strategies, and long-term vision, Stefan Hörtensteiner succeeded in elucidating the biochemical pathway responsible for chlorophyll degradation. After having contributed to the identification of key chlorophyll degradation products in the course of the past 25 years, he gradually identified and characterized most of the crucial players in the PAO/phyllobilin degradation pathway of chlorophyll. He was one of the brightest plant biochemists of his generation, and his work opened doors to a better understanding of plant senescence, tetrapyrrole homeostasis, and their complex regulation. He sadly passed away on 5 December 2020, aged 57.
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Affiliation(s)
- Sylvain Aubry
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland
| | - Bastien Christ
- Berries and Medicinal Plants, Plant Production Systems, Agroscope, Conthey, Switzerland
| | - Bernhard Kräutler
- Institute of Organic Chemistry & Center of Molecular Biosciences, University of Innsbruck, Innsbruck, Austria
| | - Enrico Martinoia
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland
| | - Howard Thomas
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth, Wales, UK
| | - Cyril Zipfel
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland
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Franke M, Berna JL, Cavalli L, Renta C, Stalmans M, Thomas H. Bestandsaufnahmen zur Erstellung einer Okobilanz für petrochemische Zwischenprodukte: Paraffine, Olefine, Benzen, Ethylen und Ethylenoxid / A Life-Cycle Inventory for the Production of Petrochemical Intermediates in Europe: Paraffins, olefins, benzene, ethylene and ethylene oxide. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-1995-320505] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Stalmans M, Berenbold H, Berna JL, Cavalli L, Dillarstone A, Franke M, Hirsinger F, Janzen D, Kosswig K, Postlethwaite D, Rappert T, Renta C, Scharer D, Schick KP, Schul W, Thomas H, Van Sloten R. Bestandsaufnahme zur Erstellung einer Ökobilanz für dıe Produktion von Waschmitteltensiden ın Europa / European Life-Cycle Inventory for Detergent Surfactants Production. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-1995-320205] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Thomas H. Bestandsaufnahme zur Erstellung einer Ökobilanz für die Produktion von Alkoholethoxysulfaten in Europa / A Life-Cycle Inventory for the Production of Alcohol Ethoxy Sulphates in Europe. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-1995-320212] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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22
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Jabbar A, Ingoe L, Thomas H, Carey P, Junejo S, Addison C, Vernazza J, Austin D, Greenwood JP, Zaman A, Razvi S. Prevalence, predictors and outcomes of thyroid dysfunction in patients with acute myocardial infarction: the ThyrAMI-1 study. J Endocrinol Invest 2021; 44:1209-1218. [PMID: 32897534 PMCID: PMC8124048 DOI: 10.1007/s40618-020-01408-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/25/2020] [Indexed: 12/16/2022]
Abstract
PURPOSE Thyroid dysfunction in patients with cardiac disease is associated with worse outcomes. This study aimed to evaluate the prevalence and analyse predictors and outcomes of thyroid dysfunction in patients presenting with an acute myocardial infarction (AMI). METHODS A prospective multicentre observational study of patients recruited from six acute hospitals within the North of England. Consecutive patients without previous thyroid disease presenting with both ST-elevation AMI (STEMI) and non-ST-elevation AMI (NSTEMI) were recruited to the Thyroxine in Acute Myocardial Infarction 1 (ThyrAMI-1) cohort study between December 2014 and 2016. Thyroid profile, standard biochemistry measurements and demographic information were obtained within 12 h of admission to hospital. Multivariable logistic regression analyses were performed to assess the predictors of thyroid dysfunction and Cox proportional hazards analyses were utilised to compare all-cause mortality by categories of thyroid dysfunction up to June 2019. RESULTS Of the 1802 participants analysed, 1440 (79.9%) were euthyroid, 312 (17.3%) had subclinical hypothyroidism (SCH), 22 (1.2%) had subclinical hyperthyroidism (SHyper) and 25 (1.3%) had low T3 syndrome (LT3S). Predictors for SCH were increasing age, female sex, higher thyroid peroxidase antibody (TPOAb) levels, higher serum creatinine levels and early morning sampling time (between 00:01-06:00 h). The predictors of SHyper were lower body mass index and afternoon sampling time (between 12:01 and 18:00 h). Predictors of LT3S were increasing age, higher creatinine levels and presence of previous ischaemic heart disease. Compared to the euthyroid group, patients with LT3S had higher all-cause mortality; adjusted hazard ratio (95% CI) of 2.02 (1.03-3.95), p = 0.04, whereas those with SCH and SHyper did not exhibit significantly increased mortality; adjusted hazard ratios (95% CI) of 1.05 (0.74-1.49), p = 0.79 and 0.27 (0.04-1.95), p = 0.19, respectively. CONCLUSIONS Thyroid dysfunction is common in AMI patients on admission to hospital and our data provide an understanding regarding which factors might influence thyroid dysfunction in these patients. Furthermore, the negative association between LT3S and increased mortality post-AMI has once again been highlighted by this study. More research is required to assess if treatment of thyroid dysfunction improves clinical outcomes.
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Affiliation(s)
- A Jabbar
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE1 3BZ, UK
- Department of Cardiology, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - L Ingoe
- Department of Endocrinology, Gateshead Health NHS Foundation Trust, Gateshead, UK
| | - H Thomas
- Department of Cardiology, Northumbria Healthcare NHS Foundation Trust, Cramlington, UK
| | - P Carey
- Department of Endocrinology and Cardiology, South Tyneside and Sunderland NHS Foundation Trust, Sunderland, UK
| | - S Junejo
- Department of Endocrinology and Cardiology, South Tyneside and Sunderland NHS Foundation Trust, Sunderland, UK
| | - C Addison
- Department of Biochemistry, South of Tyne Pathology Centre, Gateshead Health NHS Foundation Trust, Gateshead, UK
| | - J Vernazza
- Department of Biochemistry, South of Tyne Pathology Centre, Gateshead Health NHS Foundation Trust, Gateshead, UK
| | - D Austin
- Department of Cardiology, South Tees Hospitals NHS Foundation Trust, Middlesbrough, UK
| | - J P Greenwood
- Leeds University and Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - A Zaman
- Department of Cardiology, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - S Razvi
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE1 3BZ, UK.
- Department of Endocrinology, Gateshead Health NHS Foundation Trust, Gateshead, UK.
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Thomas H, Susko M, Lazar A, Craig A, Boreta L, Morin O, Braunstein S. Evaluation of Hematologic Toxicity of Stereotactic Body Radiation Therapy (SBRT) to Spinal Metastases. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Akaike T, Qazi J, Anderson A, Behnia FS, Shinohara MM, Akaike G, Hippe DS, Thomas H, Takagishi SR, Lachance K, Park SY, Tarabadkar ES, Iyer JG, Blom A, Parvathaneni U, Vesselle H, Nghiem P, Bhatia S. High somatostatin receptor expression and efficacy of somatostatin analogues in patients with metastatic Merkel cell carcinoma. Br J Dermatol 2020; 184:319-327. [PMID: 32320473 DOI: 10.1111/bjd.19150] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Merkel cell carcinoma (MCC) is an aggressive, high-grade, cutaneous neuroendocrine tumour (NET). Agents blocking programmed death 1/programmed death ligand 1 have efficacy in metastatic MCC (mMCC), but half of patients do not derive durable benefit. Somatostatin analogues (SSAs) are commonly used to treat low- and moderate-grade NETs that express somatostatin receptors (SSTRs). OBJECTIVES To assess SSTR expression and the efficacy of SSAs in mMCC, a high-grade NET. Methods In this retrospective study of 40 patients with mMCC, SSTR expression was assessed radiologically by somatostatin receptor scintigraphy (SRS; n = 39) and/or immunohistochemically when feasible (n = 9). Nineteen patients (18 had SRS uptake in MCC tumours) were treated with SSA. Disease control was defined as progression-free survival (PFS) of ≥ 120 days after initiation of SSA. RESULTS Thirty-three of 39 patients (85%) had some degree (low 52%, moderate 23%, high 10%) of SRS uptake. Of 19 patients treated with SSA, seven had a response-evaluable target lesion; three of these seven patients (43%) experienced disease control, with a median PFS of 237 days (range 152-358). Twelve of 19 patients did not have a response-evaluable lesion due to antecedent radiation; five of these 12 (42%) experienced disease control (median PFS of 429 days, range 143-1757). The degree of SSTR expression (determined by SRS and/or immunohistochemistry) did not correlate significantly with the efficacy endpoints. CONCLUSIONS In contrast to other high-grade NETs, mMCC tumours appear frequently to express SSTRs. SSAs can lead to clinically meaningful disease control with minimal side-effects. Targeting of SSTRs using SSA or other novel approaches should be explored further for mMCC.
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Affiliation(s)
- T Akaike
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - J Qazi
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - A Anderson
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - F S Behnia
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - M M Shinohara
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - G Akaike
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - D S Hippe
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - H Thomas
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - S R Takagishi
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - K Lachance
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - S Y Park
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - E S Tarabadkar
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - J G Iyer
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - A Blom
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - U Parvathaneni
- Department of Radiation Oncology, University of Washington, Seattle, WA, USA
| | - H Vesselle
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - P Nghiem
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - S Bhatia
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
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Harte H, Thomas H, Beeton K, Almack K. The experience of diagnosis with hypermobile Ehlers Danlos syndrome: a literature review. Physiotherapy 2020. [DOI: 10.1016/j.physio.2020.03.286] [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: 10/24/2022]
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Abstract
Purpose
Strategic groups research has been hampered by the poor alignment between theory and methods. This has been due in large part to the lack of significance tests for cluster analysis. Now that significance tests are available, the theoretical and methodological implications are discussed. The paper aims to discuss these issues.
Design/methodology/approach
The theory behind strategic groups is reframed to capitalize on the available significance tests. Subsequently, the significance tests are also modified to fit the proposed theory. Due to this integrative approach, this is both a theoretical and a methodological paper.
Findings
In lieu of significance tests, finding differences in performance emerged as the litmus test for the existence of discrete strategic groups. The concept of strategic groups gradually evolved to fit this requirement. Now that significance tests are available, these legacy effects of the structure-performance link can be removed. This reveals that three conflicting concepts have been sharing the label of strategic groups: strategic categories, interdependent strategic groups and strategic performance groups. The theory also reveals that the significance tests developed in ecological research need modifications for use in strategic groups research.
Research limitations/implications
A theory is proposed for interdependent strategic groups and a significance test of external isolation is proposed as part of this integrative solution.
Originality/value
This integrative solution appears to resolve the historical mismatch between theory and methods that has plagued this field since its inception. This creates a variety of intriguing areas for future research.
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Brown A, Thomas H, Matthews I, Runnett C, Lee A, Ripley D. P5252Can functional MR imaging supersede angiography? An audit of stress cardiac MRI outcomes compared those seen in the CE-MARC trials. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Recent studies have compared the performance of cardiac MRI (CMR) with coronary angiography. The CE-MARC trial established CMR's high diagnostic accuracy for coronary artery disease (CAD). Following these results, and those of CE-MARC 2, which showed reduced unnecessary angiography rates with CMR-guided care, we increased our adoption of CMR as an investigation of choice for CAD at our centre.
Purpose
In patients who have a CMR for stable angina, what is the outcome after detection of CAD, how do findings compare with angiography, and do those without CAD identified go on to have a major adverse cardiovascular event (MACE)?
Method
We performed a retrospective audit of all stress CMR performed from August 2016 to March 2017 at our hospital in North England. All patients were followed up for a minimum of 12 months.
NICE guideline care was used during the study period. The CE-MARC trial was used for quality standards and to compare results.
Results
91 stress CMRs were performed. 13 were excluded as they were performed on out-of-area patients. Median follow up was 14.5 months.
Of the remaining 78 patients, 34 (43%) had a positive CMR. 20/34 (59%) proceeded to angiogram. In 16/20 of patients, CMR findings correlated with angiogram findings. A PPV of 80%. The PPV in CE-MARC was 77.2% (72.1–81.6).
Of those who did not proceed to angiography, 8/14 had non-viable myocardium, 3 continued with medical management, in two it was unclear. 3/34 (8.8%) with positive CMR had a MACE.
44 patients had a negative CMR. Three had an angiogram during follow up. All were negative. There was a MACE in 1/44 (2.3%).
Conclusion
The audit population has a similar PPV to that of CE-MARC.
MACE rates at 12 months were similar to CE-MARC which suggests that the trial results are reproducible in our setting. The wider use of CMR can therefore improve investigation and management for patients with stable angina.
The audit is limited by the small number of patients proceeding to angiogram and the ability to confirm negative CMR results.
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Affiliation(s)
- A Brown
- Northumbria Healthcare NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom
| | - H Thomas
- Northumbria Healthcare NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom
| | - I Matthews
- Northumbria Healthcare NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom
| | - C Runnett
- Northumbria Healthcare NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom
| | - A Lee
- Northumbria Healthcare NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom
| | - D Ripley
- Northumbria Healthcare NHS Foundation Trust, Newcastle Upon Tyne, United Kingdom
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Brown A, Westley K, Amiruddin Z, Driver W, Runnett C, Matthews I, Ripley D, Thomas H. P782The evaluation of a nurse-led Sacubitril/Valsartan initiation and titration clinic. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Sacubitril/Valsartan is a new NICE-approved treatment for heart failure patients with NYHA 2–4 symptoms, LVEF<35% and on a stable dose of ACEi/ARB medication. The PARADIGM-HF trial was stopped early after showing an absolute risk reduction of cardiovascular death/hospitalisation of 5%. NICE specify that it should be initiated by a heart failure specialist with access to a multidisciplinary team. We set up a secondary care specialist nurse-led clinic in our trust in North England for Sacubitril/Valsartan initiation and monitoring.
Purpose
To assess compliance to NICE guidelines and establish the number of clinic visits required for dose titration. To compare demographics and treatment outcomes of our patients with the trial population.
Methods
A retrospective analysis of all patients prescribed Sacubitril/Valsartan over two years with a minimum follow up of 6 months. Data was collected from patient records and compared with NICE guidelines and the PARADIGM-HF trial (total population and Western European subset).
Results
159 patients commenced Sacubitril/Valsartan. Table 1 shows demographic and therapy data and demonstrates our cohort is largely similar to the Western Europe cohort of Paradigm-HF. However, our patients had higher rates of MRA and complex device treatments. Prescribing was compliant with NICE guidelines in 97%. Failure to exceed the target 50% ACEi/ARB dose was the main reason for non-compliance in 60% (3/5). These 3 patients all discontinued. Overall 16% discontinued the drug (42% for hypotension) compared to 18% in the trial. No serious adverse reactions occurred. Mean number of clinic visits was 3.7±1.4.
Table 1. Demographic and therapy data Cohort size Age Female % Ischaemic Aetiology % LVEF B-Blocker % MRA % CRT % ICD % North England 159 69.3±11.1 20 59 27 90 73 23 47 PARADIGM-HF full trial 8442 63.8±11.5 21 60 30 93 54 7 15 Western European Subset 1680 68.3±9.9 18 30 95 44 12 33
Conclusion
Our cohort closely reflects the trial and the resultant NICE guidelines. More of our patients are treated with MRA and complex devices compared to PARADIGM-HF. This may be due to the quality of our service or may reflect our patient selection. Similar tolerability in our patients is reassuring as study patients are highly selected. Those receiving suboptimal ACE/ARB doses (therefore not NICE compliant) prior to initiation all failed to tolerate the new drug which cautions against straying from guidance. Our data shows a specialist nurse-led service can be delivered safely and effectively achieving therapeutic doses with a small number of patient visits. This data supports its deliverability in a non-trial setting.
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Affiliation(s)
- A Brown
- Wansbeck General Hospital, Ashington, United Kingdom
| | - K Westley
- Wansbeck General Hospital, Ashington, United Kingdom
| | - Z Amiruddin
- Wansbeck General Hospital, Ashington, United Kingdom
| | - W Driver
- Wansbeck General Hospital, Ashington, United Kingdom
| | - C Runnett
- Wansbeck General Hospital, Ashington, United Kingdom
| | - I Matthews
- Wansbeck General Hospital, Ashington, United Kingdom
| | - D Ripley
- Wansbeck General Hospital, Ashington, United Kingdom
| | - H Thomas
- Wansbeck General Hospital, Ashington, United Kingdom
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Worsfold J, Eleti S, Syed A, Thomas H. P159. Margin re-excision rates following wide local excision with surgeon-operated intraoperative ultrasound. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2019.01.179] [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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Marsden M, Benger J, Brohi K, Curry N, Foley C, Green L, Lucas J, Rossetto A, Stanworth S, Thomas H, Davenport R. Coagulopathy, cryoprecipitate and CRYOSTAT-2: realising the potential of a nationwide trauma system for a national clinical trial. Br J Anaesth 2018; 122:164-169. [PMID: 30686301 DOI: 10.1016/j.bja.2018.10.055] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/06/2018] [Accepted: 10/27/2018] [Indexed: 01/10/2023] Open
Affiliation(s)
- M Marsden
- Centre for Trauma Sciences, Blizard Institute, Queen Mary University of London, London, UK; Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, UK; Barts Health NHS Trust, London, UK.
| | - J Benger
- Faculty of Health and Applied Sciences, University of the West of England, Bristol, UK
| | - K Brohi
- Centre for Trauma Sciences, Blizard Institute, Queen Mary University of London, London, UK; Barts Health NHS Trust, London, UK
| | - N Curry
- Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK; Radcliffe Department of Medicine, University of Oxford, UK
| | - C Foley
- NHS Blood and Transplant, Clinical Trials Unit, Cambridge, UK
| | - L Green
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary, University of London, London, UK; Barts Health NHS Trust, London, UK
| | - J Lucas
- NHS Blood and Transplant, Clinical Trials Unit, Cambridge, UK
| | - A Rossetto
- Centre for Trauma Sciences, Blizard Institute, Queen Mary University of London, London, UK; Barts Health NHS Trust, London, UK
| | - S Stanworth
- Oxford NIHR BRC Haematology Theme, Oxford Centre for Haematology, University of Oxford, UK; NHS Blood and Transplant, Transfusion Medicine, Oxford, UK; Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK; Radcliffe Department of Medicine, University of Oxford, UK
| | - H Thomas
- NHS Blood and Transplant, Clinical Trials Unit, Bristol, UK; NHS Blood and Transplant, Transfusion Medicine, Oxford, UK
| | - R Davenport
- Centre for Trauma Sciences, Blizard Institute, Queen Mary University of London, London, UK; Barts Health NHS Trust, London, UK
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Corriger J, Beaudouin E, Rothmann R, Penven E, Haumonte Q, Thomas H, Picaud J, Nguyen-Grosjean VM, Corriger-Ippolito J, Braun F, De Talancé M, Auburtin B, Atain-Kouadio P, Borsa-Dorion A, Baugnon D, De Carvalho M, Jaussaud R, Nguyen-Thi PL, Bollaert PE, Demoly P, Tanno LK. Epidemiological Data on Anaphylaxis in French Emergency Departments. J Investig Allergol Clin Immunol 2018; 29:357-364. [PMID: 30411700 DOI: 10.18176/jiaci.0348] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Although anaphylaxis has been considered a priority public health issue in the world allergy community, epidemiological data on morbidity and mortality remain suboptimal. We performed the first multicenter epidemiological study in French emergency departments (EDs). The study covered 7 EDs over a period of 1 year. The objectives were to identify areas that are amenable to change and to support ongoing national and international efforts for better diagnosis, management, and prevention of anaphylaxis. METHODS Ours was a descriptive study based on data routinely reported to French institutional administrative databases from 7 French public health institutions in the Lorraine region between January and December 2015. Data were collected based on the anaphylaxisrelated codes of the International Classification of Diseases (ICD)-10, and cases were clinically validated as anaphylaxis. RESULTS Of the 202 079 admissions to the EDs, 4817 had anaphylaxis-related codes; of these, 323 were clinically validated as anaphylaxis. Although 45.8% were severe, adrenaline was prescribed in only 32.4% of cases. Of the 323 cases, 57.9% were subsequently referred for an allergy work-up or evaluation (after or during hospitalization), and 17.3% were prescribed autoinjectable epinephrine. CONCLUSION Our results highlight an urgent need for improved public health initiatives with respect to recognition and treatment of anaphylaxis. We flag key problems that should be managed in the coming years through implementation of national and international actions.
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Affiliation(s)
- J Corriger
- Allergy Department, Hospital Emile Durkheim, Epinal, France.,Internal Medicine and Clinical Immunology Department, University Hospital, Vandoeuvre-lès-Nancy, France
| | - E Beaudouin
- Allergy Department, Hospital Emile Durkheim, Epinal, France
| | - R Rothmann
- Emergency Department, Hospital Mercy-Metz, Ars-Laquenexy, France
| | - E Penven
- Occupational Diseases Department, University Hospital, Vandoeuvre-lès-Nancy, France.,Division of Allergy, Dermatology Department, University Hospital, Vandoeuvre-lès-Nancy, France
| | - Q Haumonte
- Allergy Department, Hospital Emile Durkheim, Epinal, France
| | - H Thomas
- Allergy Department, Hospital Emile Durkheim, Epinal, France
| | - J Picaud
- Allergy Department, Hospital Emile Durkheim, Epinal, France
| | | | - J Corriger-Ippolito
- Division of Allergy, Dermatology Department, University Hospital, Vandoeuvre-lès-Nancy, France.,Emergency Department, University Hospital, Vandoeuvre-lès-Nancy, France
| | - F Braun
- Emergency Department, Hospital Mercy-Metz, Ars-Laquenexy, France
| | - M De Talancé
- Emergency Department, Hospital Emile Durkheim, Epinal, France
| | - B Auburtin
- Pediatric Emergency Department, Hospital Emile Durkheim, Epinal, France
| | - P Atain-Kouadio
- Emergency Department, University Hospital, Vandoeuvre-lès-Nancy, France
| | - A Borsa-Dorion
- Pediatric Emergency Department, University Hospital, Vandoeuvre-lès-Nancy, France
| | - D Baugnon
- Emergency Department, Hospital of Verdun-Saint-Mihiel, Verdun, France
| | - M De Carvalho
- Biology and Immunology Laboratory, University Hospital, Vandoeuvre-lès-Nancy, France
| | - R Jaussaud
- Internal Medicine and Clinical Immunology Department, University Hospital, Vandoeuvre-lès-Nancy, France
| | - P L Nguyen-Thi
- Clinical Research Platform, ESPRI-BioBase Unit, University Hospital, Vandoeuvre-lès-Nancy, France
| | - P E Bollaert
- Medical Intensive Care Unit, University Hospital, Nancy, France
| | - P Demoly
- Division of Allergy, Department of Pulmonology, University of Montpellier, France and Sorbonne University, INSERM, IPLESP, EPAR team, Paris, France
| | - L K Tanno
- Division of Allergy, Department of Pulmonology, University of Montpellier, France and Sorbonne University, INSERM, IPLESP, EPAR team, Paris, France
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Paulson KG, Voillet V, McAfee MS, Hunter DS, Wagener FD, Perdicchio M, Valente WJ, Koelle SJ, Church CD, Vandeven N, Thomas H, Colunga AG, Iyer JG, Yee C, Kulikauskas R, Koelle DM, Pierce RH, Bielas JH, Greenberg PD, Bhatia S, Gottardo R, Nghiem P, Chapuis AG. Acquired cancer resistance to combination immunotherapy from transcriptional loss of class I HLA. Nat Commun 2018; 9:3868. [PMID: 30250229 PMCID: PMC6155241 DOI: 10.1038/s41467-018-06300-3] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/15/2018] [Indexed: 02/07/2023] Open
Abstract
Understanding mechanisms of late/acquired cancer immunotherapy resistance is critical to improve outcomes; cellular immunotherapy trials offer a means to probe complex tumor-immune interfaces through defined T cell/antigen interactions. We treated two patients with metastatic Merkel cell carcinoma with autologous Merkel cell polyomavirus specific CD8+ T cells and immune-checkpoint inhibitors. In both cases, dramatic remissions were associated with dense infiltration of activated CD8+s into the regressing tumors. However, late relapses developed at 22 and 18 months, respectively. Here we report single cell RNA sequencing identified dynamic transcriptional suppression of the specific HLA genes presenting the targeted viral epitope in the resistant tumor as a consequence of intense CD8-mediated immunologic pressure; this is distinguished from genetic HLA-loss by its reversibility with drugs. Transcriptional suppression of Class I loci may underlie resistance to other immunotherapies, including checkpoint inhibitors, and have implications for the design of improved immunotherapy treatments.
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Affiliation(s)
- K G Paulson
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Seattle Cancer Care Alliance, Seattle, WA, USA
| | - V Voillet
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - M S McAfee
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - D S Hunter
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - F D Wagener
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - M Perdicchio
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Roche, Basel, Switzerland
| | - W J Valente
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - S J Koelle
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - C D Church
- University of Washington, Seattle, WA, USA
| | - N Vandeven
- University of Washington, Seattle, WA, USA
| | - H Thomas
- University of Washington, Seattle, WA, USA
| | | | - J G Iyer
- University of Washington, Seattle, WA, USA
| | - C Yee
- MD Anderson Cancer Center, Houston, TX, USA
| | | | - D M Koelle
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Benaroya Research Institute, Seattle, WA, USA
| | - R H Pierce
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - J H Bielas
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - P D Greenberg
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - S Bhatia
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Seattle Cancer Care Alliance, Seattle, WA, USA
| | - R Gottardo
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - P Nghiem
- University of Washington, Seattle, WA, USA.,Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Seattle Cancer Care Alliance, Seattle, WA, USA
| | - A G Chapuis
- University of Washington, Seattle, WA, USA. .,Fred Hutchinson Cancer Research Center, Seattle, WA, USA. .,Seattle Cancer Care Alliance, Seattle, WA, USA.
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Veiga S, Ge X, Mercer C, Hernández-Álvarez M, Thomas H, Hernandez-Losa J, Cajal S, Zorzano A, Thomas G, Kozma S. Phenformin-induced mitochondrial dysfunction sensitizes hepatocellular carcinoma for dual inhibition of mTOR. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.323] [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: 11/12/2022] Open
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Lee MP, Thomas H, Thomas L, Wilson A. Blind Spots in African Management Education: An Examination of Issues Deserving Greater Attention. Africa Journal of Management 2018. [DOI: 10.1080/23322373.2018.1458544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Michelle P. Lee
- Lee Kong Chian School of Business, Singapore Management University, Singapore
| | - Howard Thomas
- Lee Kong Chian School of Business, Singapore Management University, Singapore
- Questrom School of Business, Boston University, USA
- Gordon Institute of Business Science, University of Pretoria, South Africa
| | | | - Alexander Wilson
- School of Business and Economics, Loughborough University, Leicestershire, UK
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Syed A, Eleti S, Kumar V, Ahmad A, Thomas H. Validation of Memorial Sloan Kettering Cancer Center nomogram to detect non-sentinel lymph node metastases in a United Kingdom cohort. G Chir 2018; 39:12-19. [PMID: 29549676 DOI: 10.11138/gchir/2018.39.1.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
AIM Axillary lymph node dissection, although associated with long-term morbidity, has been the standard of treatment for all nodepositive breast cancer patients. We assessed the risk prediction ability (validity) of Memorial Sloan Kettering Cancer Center (MSKCC) nomogram for non-sentinel lymph node metastases and analysed the outcome of patients with sentinel node metastases. PATIENTS AND METHODS All operable early breast cancer patients with sentinel node macro metastases (size > 2mm) who underwent axillary dissection from April 2009 to March 2015 were considered eligible. The risk of non-sentinel lymph node metastases was calculated using an online MSKCC calculator, and accuracy was determined based on the area under the receiver-operating characteristic curve (AUC-ROC). Tumour characteristics and overall survival were also analysed as secondary end points. RESULTS Of 1745 patients who were diagnosed with operable breast cancer during the study period, 114 patients were considered eligible. The AUC-ROC was 0.66 suggestive of lesser accuracy in prediction and not statistically significant (p value = 0.7303). Seventysix (50.7%) of these patients did not have any non-sentinel node metastases. At a mean follow up of four years, the disease-free survival was 86.4% and overall survival rate was 88.4%. CONCLUSIONS The MSKCC nomogram was unable to accurately predict the risk in our cohort of patients with more than half of this cohort of patients not requiring axillary dissection. These findings are consistent with other European studies. This study thus highlights the need for modified prediction model for European cohorts.
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Hoppe CJM, Schuback N, Semeniuk D, Giesbrecht K, Mol J, Thomas H, Maldonado MT, Rost B, Varela DE, Tortell PD. Correction to: Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance. Polar Biol 2018. [DOI: 10.1007/s00300-018-2267-8] [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: 10/18/2022]
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Ajithkumar T, Mazhari AL, Stickan-Verfürth M, Kramer PH, Fuentes CS, Lambert J, Thomas H, Müller H, Fleischhack G, Timmermann B. Proton Therapy for Craniopharyngioma - An Early Report from a Single European Centre. Clin Oncol (R Coll Radiol) 2018; 30:307-316. [PMID: 29459099 DOI: 10.1016/j.clon.2018.01.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/22/2017] [Accepted: 01/16/2018] [Indexed: 11/17/2022]
Abstract
AIMS Proton beam therapy (PBT) is being increasingly used for craniopharyngioma. We describe our early outcome of patients treated with PBT. MATERIALS AND METHODS Between August 2013 and July 2016, 18 patients with craniopharyngiomas were treated with 54 Cobalt Gray Equivalent (CGE) in 30 fractions over 6 weeks at our centre. The early outcome of 16 patients included in a registry study was analysed. Radiological response was assessed by RECIST criteria and the disease- and treatment-related toxicities were scored according to the CTCAE 4.0. RESULTS All patients are alive at a median follow-up of 32.6 months (range 9.2-70.6 months) from initial diagnosis. The median age at PBT was 10.2 years (range 5.4-46.9 years). One patient progressed 8.7 months after PBT and subsequently had complete resection of the tumour. At a median follow-up of 18.4 months after PBT, five patients remained in complete remission, four in partial remission and seven with stable disease. The most common adverse effects during PBT were grade 1 (cutaneous in seven patients and fatigue in six patients). There were no treatment-related grade 3 toxicities. CONCLUSIONS Our early results are encouraging and comparable with the limited literature on PBT for craniopharyngioma.
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Affiliation(s)
- T Ajithkumar
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - A-L Mazhari
- West German Proton Therapy Centre Essen (WPE), Essen, Germany
| | - M Stickan-Verfürth
- West German Proton Therapy Centre Essen (WPE), Essen, Germany; Clinic for Particle Therapy, University Hospital Essen, Essen, Germany
| | - P-H Kramer
- West German Proton Therapy Centre Essen (WPE), Essen, Germany
| | - C-S Fuentes
- West German Proton Therapy Centre Essen (WPE), Essen, Germany
| | - J Lambert
- West German Proton Therapy Centre Essen (WPE), Essen, Germany
| | - H Thomas
- West German Proton Therapy Centre Essen (WPE), Essen, Germany
| | - H Müller
- Department of Pediatrics, Klinikum Oldenburg, Medical Campus University Oldenburg, Oldenburg, Germany
| | - G Fleischhack
- Paediatric Haematology/Oncology, Paediatrics III, University Hospital Essen, Essen, Germany
| | - B Timmermann
- West German Proton Therapy Centre Essen (WPE), Essen, Germany; Clinic for Particle Therapy, University Hospital Essen, Essen, Germany.
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Thomas H, Horick N, Spring LM, Brachtel EF, Jimenez RB. Abstract P1-15-03: Management and outcomes of metaplastic breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p1-15-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose/Objectives: Metaplastic breast cancer (MBC) is a rare malignancy composed of both epithelial and mesenchymal components that accounts for less than 1% of primary breast carcinomas. Knowledge of effective management of the disease remains limited. We retrospectively evaluated the treatment and outcomes of patients with MBC from three academic hospitals.
Materials/Methods: Patients diagnosed with MBC between June 2, 1993 and May 6, 2016 were identified. Demographic and clinical variables were extracted via primary chart review. Descriptive statistics were utilized to summarize the patient cohort's clinical course. The Kaplan-Meier method was used to obtain estimates of local control (LC) and survival.
Results: Seventy-six patients were identified with a median follow-up of 7.6 years (range: 0.18-19.9 years). The median age at diagnosis was 54 (range 28-81). About two-thirds of patients (67%, n=51) presented with a palpable mass while the remaining patients were screen-detected via mammogram (32%, n=24). The majority of patients were AJCC-7 stage I (38%, n=29) or stage II (49%, n=37), while 10% (n=8) were stage III and 3% (n= 2) stage IV. About half of tumors (46%, n=35) were subtyped using WHO histologic classification of MBC. Over half of subtyped cases were spindle cell carcinoma (51%, n=18), 17% were matrix-producing carcinoma (n=6), 23% were adenocarcinoma with squamous differentiation (n=8), 6% were carcinosarcoma (n=2), and 3% were mixed (n=1).The majority of patients had triple negative disease (82%, n=62), while 13% (n=10) had HR+/HER2- disease, and 5% (n=4) had HER2+ disease. Most patients had high grade tumors (84%, n=64) and received breast conserving surgery (61%, n=46) while 39% (n=29) had mastectomies. Seventy-six percent (n=58) of patients received chemotherapy and 61% (n=46) received radiation therapy. All HR+ patients received adjuvant endocrine therapy, and 1 patient received immunotherapy. Of patients who received chemotherapy, 78% (n=45) received adjuvant therapy alone, 17% (n=10) neoadjuvant therapy alone, and 5% (n=3) both. Seventy percent (n=41) of chemotherapy regimens included a taxane. Among 74 patients without metastatic disease at presentation, recurrences were observed in 18% (n=13). Most patients recurred distantly (69%, n=9), while the remainder had isolated local recurrences (n=4). Of 9 distant failures, 3 had MBC subtype information and all 3 were spindle cell carcinoma. Of 4 local recurrences, 3 of 4 were adenocarcinoma with squamous cell differentiation and 1 was spindle cell carcinoma. At a median follow-up of 7.6 years, the local recurrence-free survival was 88%, disease-free survival was 80%, and overall survival was 80%. Kaplan-Meier point estimates for remaining free of local recurrence versus distant recurrence were 99% (95% C.I., 90- 100) versus 96% (95% C.I., 87- 99) at 2 years and 88% (95% C.I., 76-94) versus 87% (95% C.I., 75- 93) at 5 years.
Conclusions: MBC is a rare histologic subtype that commonly presents with high-grade disease and triple-negative receptor status. In contrast to other smaller series, local and distant failure rates in this cohort were consistent with non-MBC triple negative cohorts. Additional molecular based research is warranted to further characterize features associated with local and distant failure.
Citation Format: Thomas H, Horick N, Spring LM, Brachtel EF, Jimenez RB. Management and outcomes of metaplastic breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P1-15-03.
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Affiliation(s)
- H Thomas
- Harvard Medical School, Boston, MA; Massachusetts General Hospital, Boston, MA
| | - N Horick
- Harvard Medical School, Boston, MA; Massachusetts General Hospital, Boston, MA
| | - LM Spring
- Harvard Medical School, Boston, MA; Massachusetts General Hospital, Boston, MA
| | - EF Brachtel
- Harvard Medical School, Boston, MA; Massachusetts General Hospital, Boston, MA
| | - RB Jimenez
- Harvard Medical School, Boston, MA; Massachusetts General Hospital, Boston, MA
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Thomas H, Ougham H. On plant growth and form. New Phytol 2017; 216:337-338. [PMID: 28921560 DOI: 10.1111/nph.14807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Howard Thomas
- IBERS, Aberystwyth University, Edward Llwyd Building, Aberystwyth, Ceredigion, SY23 3DA, UK
| | - Helen Ougham
- IBERS, Aberystwyth University, Edward Llwyd Building, Aberystwyth, Ceredigion, SY23 3DA, UK
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Hoppe CJM, Schuback N, Semeniuk D, Giesbrecht K, Mol J, Thomas H, Maldonado MT, Rost B, Varela DE, Tortell PD. Resistance of Arctic phytoplankton to ocean acidification and enhanced irradiance. Polar Biol 2017; 41:399-413. [PMID: 31983801 PMCID: PMC6952045 DOI: 10.1007/s00300-017-2186-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 03/13/2017] [Revised: 07/21/2017] [Accepted: 07/23/2017] [Indexed: 11/29/2022]
Abstract
The Arctic Ocean is a region particularly prone to ongoing ocean acidification (OA) and climate-driven changes. The influence of these changes on Arctic phytoplankton assemblages, however, remains poorly understood. In order to understand how OA and enhanced irradiances (e.g., resulting from sea–ice retreat) will alter the species composition, primary production, and eco-physiology of Arctic phytoplankton, we conducted an incubation experiment with an assemblage from Baffin Bay (71°N, 68°W) under different carbonate chemistry and irradiance regimes. Seawater was collected from just below the deep Chl a maximum, and the resident phytoplankton were exposed to 380 and 1000 µatm pCO2 at both 15 and 35% incident irradiance. On-deck incubations, in which temperatures were 6 °C above in situ conditions, were monitored for phytoplankton growth, biomass stoichiometry, net primary production, photo-physiology, and taxonomic composition. During the 8-day experiment, taxonomic diversity decreased and the diatom Chaetoceros socialis became increasingly dominant irrespective of light or CO2 levels. We found no statistically significant effects from either higher CO2 or light on physiological properties of phytoplankton during the experiment. We did, however, observe an initial 2-day stress response in all treatments, and slight photo-physiological responses to higher CO2 and light during the first five days of the incubation. Our results thus indicate high resistance of Arctic phytoplankton to OA and enhanced irradiance levels, challenging the commonly predicted stimulatory effects of enhanced CO2 and light availability for primary production.
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Affiliation(s)
- C J M Hoppe
- 1Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC Canada.,2Marine Biogeosciences, Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - N Schuback
- 1Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC Canada.,3Department of Physics and Astronomy, Curtin University, Perth, WA Australia
| | - D Semeniuk
- 1Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC Canada
| | - K Giesbrecht
- 4School of Earth and Ocean Sciences, University of Victoria, Victoria, BC Canada
| | - J Mol
- 5Department of Oceanography, Dalhousie University, Halifax, NS Canada
| | - H Thomas
- 5Department of Oceanography, Dalhousie University, Halifax, NS Canada
| | - M T Maldonado
- 1Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC Canada
| | - B Rost
- 2Marine Biogeosciences, Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - D E Varela
- 4School of Earth and Ocean Sciences, University of Victoria, Victoria, BC Canada.,6Department of Biology, University of Victoria, Victoria, BC Canada
| | - P D Tortell
- 1Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC Canada.,7Department of Botany, University of British Columbia, Victoria, BC Canada.,8Peter Wall Institute for Advanced Studies, University of British Columbia, Vancouver, Canada
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Boisseaux P, Noury P, Thomas H, Garric J. Immune responses in the aquatic gastropod Lymnaea stagnalis under short-term exposure to pharmaceuticals of concern for immune systems: Diclofenac, cyclophosphamide and cyclosporine A. Ecotoxicol Environ Saf 2017; 139:358-366. [PMID: 28189777 DOI: 10.1016/j.ecoenv.2017.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 02/02/2017] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
This is a pioneering study in the ecotoxicological assessment of immunotoxic effects of the three selected drugs of concern to a freshwater gastropod species. Lymnaea stagnalis was exposed in the laboratory for 3 days to three drugs used for immune systems: diclofenac (nonsteroidal anti-inflammatory drug), cyclophosphamide (anti-cancer immunosuppressive drug) or cyclosporine A (anti-xenograft immunosuppressive drug). Exposure ranges included environmental realistic (1-10μgL-1) and therapeutic concentrations (100-1000μgL-1). At the end of exposure times, the immune parameters of individual snails were measured: hemocyte density and viability, hemocyte phagocytosis capacity and hemocyte-related oxidative activities (basal and NADPH-oxidase stimulated with zymosan particles). Diclofenac and cyclosporine A induced immune responses, although the effects were not strong. No immunosuppression was observed. Such subtle immunomodulations bring further interrogations regarding their long-term immunotoxicity and possible resulting tradeoffs with life-history traits. On the other hand, the prodrug cyclophosphamide did not induce significant immune responses. Since metabolism pathways differ greatly between vertebrates and invertebrates, this study also suggests that relevant vertebrate metabolites should be included in the immunotoxicity assessment of pharmaceuticals in non-target invertebrate species. Finally, the possible interactive effects of these pharmaceuticals sharing similar modes of action or effects features should also be explored.
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Affiliation(s)
- P Boisseaux
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, 69616 Villeurbanne, Cedex, France
| | - P Noury
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, 69616 Villeurbanne, Cedex, France
| | - H Thomas
- LIttoral ENvironnement et Sociétés (LIENSs) - UMR 7266, Avenue Michel Crépeau, 17 042 La Rochelle, France
| | - J Garric
- Irstea, UR MALY, centre de Lyon-Villeurbanne, 5 rue de la Doua, 69616 Villeurbanne, Cedex, France.
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Vyas A, Rodrigues VC, Ayres R, Myles PR, Hothersall EJ, Thomas H. Public health matters: Innovative approaches for engaging medical students. Med Teach 2017; 39:402-408. [PMID: 28379091 DOI: 10.1080/0142159x.2017.1294753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND Public health faces the paradox of being increasingly emphasized by the key health and social care regulators and stakeholders, while remaining a largely under-represented discipline in the context of medical curricula. Enhancing medical student engagement in public health teaching is one way to address this concern. METHODS We discuss four key solutions to the challenges faced by public health educators in medical schools, and present five case studies which demonstrate innovative approaches to engaging medical students in our discipline. RESULTS Four different approaches have been piloted by members of the Public Health Educators in Medical Schools (PHEMS) network: (i) ensuring social accountability, (ii) demonstrating clinical relevance, (iii) mapping the core curriculum, and (iv) using technology enhanced learning. Preliminary student feedback suggests that these approaches can be used to position public health as an enabler of modern medical practice, and promote a more holistic understanding of medicine by linking patient-centred care to the population level. CONCLUSIONS The zeitgeist in both academia and the healthcare system supports the teaching of public health within the medical curriculum; there is also consensus at the political and pedagogical level. The challenge of ensuring engagement now needs to be met at the student-teacher interface.
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Affiliation(s)
- A Vyas
- a Public Health , Norwich Medical School, University of East Anglia , Norwich , UK
| | - V C Rodrigues
- b Public Health and Medical Education , Norwich Medical School, University of East Anglia , Norwich , UK
| | - R Ayres
- c Population Health , Plymouth Peninsula Schools of Medicine and Dentistry , Plymouth , UK
| | - P R Myles
- d Health Protection and Epidemiology, Epidemiology and Public Health , University of Nottingham , Nottingham , UK
| | - E J Hothersall
- e Public Health Medicine, Systems in Practice Convenor , Dundee Medical School and NHS Tayside , Dundee , UK
| | - H Thomas
- f Public Health and Primary Care , St George's, University of London , London , UK
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Thomas H, Liu H, Salle L, Schott J, Ducreux C, Millat G, Chevalier P, Probst V, Guinamard R, Bouvagnet P. TRPM4 variants associated with long QT syndrome. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30497-4] [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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Thomas V, Sofin RGS, Allen M, Thomas H, Biju PR, Jose G, Unnikrishnan NV. Optical analysis of samarium doped sodium bismuth silicate glass. Spectrochim Acta A Mol Biomol Spectrosc 2017; 171:144-148. [PMID: 27504818 DOI: 10.1016/j.saa.2016.07.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 07/22/2016] [Accepted: 07/31/2016] [Indexed: 06/06/2023]
Abstract
Samarium doped sodium bismuth silicate glass was synthesized using the melt quenching method. Detailed optical spectroscopic studies of the glassy material were carried out in the UV-Vis-NIR spectral range. Using the optical absorption spectra Judd-Ofelt (JO) parameters are derived. The calculated values of the JO parameters are utilized in evaluating the various radiative parameters such as electric dipole line strengths (Sed), radiative transition probabilities (Arad), radiative lifetimes (τrad), fluorescence branching ratios (β) and the integrated absorption cross- sections (σa) for stimulated emission from various excited states of Sm3+‡ ion. The principal fluorescence transitions are identified by recording the fluorescence spectrum. Our analysis revealed that the novel glassy system has the optimum values for the key parameters viz. spectroscopic quality factor, optical gain, stimulated emission cross section and quantum efficiency, which are required for a high performance optical amplifier. Calculated chromaticity co-ordinates (0.61, 0.38) also confirm its application potential in display devices.
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Affiliation(s)
- V Thomas
- Department of Physics, College of Science, Sultan Qaboos University, AlKhoud, Oman; Department of Physics, Christian College Chengannur, University of Kerala, India.
| | - R G S Sofin
- Department of Physics, College of Science, Sultan Qaboos University, AlKhoud, Oman
| | - M Allen
- UDSMM, Université du Littoral Côte d'Opale, 59140 Dunkerque, France
| | - H Thomas
- Department of Physics, Christian College Chengannur, University of Kerala, India
| | - P R Biju
- School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam 686560, India
| | - G Jose
- Institute for Materials Research, School of Process, Environmental and Materials Engineering, University of Leeds, UK
| | - N V Unnikrishnan
- School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam 686560, India
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Boisseaux P, Noury P, Delignette-Muller ML, Thomas H, Garric J. Recommendations for the Analysis of Hemocyte-related Immunocompetent Oxidative Activity in the Freshwater Snail Activity in the Freshwater Snail Lymnaea Stagnalis. J Xenobiot 2016; 6:6585. [PMID: 30701051 PMCID: PMC6324471 DOI: 10.4081/xeno.2016.6585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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] [Indexed: 11/22/2022] Open
Abstract
Not available
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Affiliation(s)
- P Boisseaux
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, Villeurbanne, France
| | - P Noury
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, Villeurbanne, France
| | - M-L Delignette-Muller
- Université de Lyon, Université Lyon 1, CNRS, UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Villeurbanne, France.,Université de Lyon, VetAgro Sup Campus Vétérinaire de Lyon, Marcy l'Etoile, France
| | - H Thomas
- LIttoral ENvironnement et Sociétés (LIENSs) - UMR 7266, La Rochelle, France
| | - J Garric
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, Villeurbanne, France
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Abstract
In this paper, the role of property development in city revitalization is considered. Case study material is used to analyze the changing organizational nature of property development, especially the interrelationships between property developers and the traditional purveyors of urban policy: Local authorities. It is shown how the property industry is dependent on the development of organizational capacities with public authorities in a manner not anticipated by the rhetoric of central government, a rhetoric which has pushed the property-led approach as an alternative to development by, and through, the public sector. In contrast to this view, illustrative material is presented which indicates how property-led development is highly dependent on the public sector. Also illustrated is how the process of property-led regeneration has the capacity to undermine a range of local, community, interests in areas affected by redevelopment schemes, a situation which has been exacerbated by the prioritization of the shorter-term development goals of the property industry. In conclusion, it is noted that property-led approaches to regeneration, although a necessary component of urban revitalization, are neither a sufficient nor an adequate response to the multiple tasks involved in the revitalization of cities.
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Affiliation(s)
- R Imrie
- Department of Geography, Royal Holloway University of London, University of London, Egham, TW20 OEX, England
| | - H Thomas
- School of Planning, Oxford Polytechncic, Headington, Oxford OX3 OBP, England
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Rashidi A, Barcikovski S, Jendrzej S, Tippelt S, Fleischhack G, Thomas H, Timmermann B, Schramm A. Enhanced radiation efficiency by gold nanoparticles after proton beam irradiation in medulloblastoma cell lines. Klin Padiatr 2016. [DOI: 10.1055/s-0036-1593550] [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: 10/20/2022]
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Thomas H, Ougham H. Introduction to a Virtual Issue on plant senescence. New Phytol 2016; 212:531-536. [PMID: 27735076 DOI: 10.1111/nph.14248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Howard Thomas
- IBERS, Aberystwyth University, Edward Llwyd Building, Aberystwyth, Ceredigion, SY23 3DA, UK.
| | - Helen Ougham
- IBERS, Aberystwyth University, Edward Llwyd Building, Aberystwyth, Ceredigion, SY23 3DA, UK
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