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Montague E, Roques T, Spencer K, Burnett A, Lourenco J, Thorp N. How Long Does Contouring Really Take? Results of the Royal College of Radiologists Contouring Surveys. Clin Oncol (R Coll Radiol) 2024; 36:335-342. [PMID: 38519383 DOI: 10.1016/j.clon.2024.03.005] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 03/07/2024] [Indexed: 03/24/2024]
Abstract
AIMS The success and safety of modern radiotherapy relies on accurate contouring. Understanding the time taken to complete radiotherapy contours is critical to informing workforce planning and, in the context of a workforce shortfall, advocating for investment in technology and multi-professional skills mix. We aimed to quantify the time taken to delineate target volumes for radical radiotherapy. MATERIALS AND METHODS The Royal College of Radiologists circulated two electronic surveys via email to all clinical oncology consultants in the UK. The individual case survey requested anonymous data regarding the next five patients contoured for radical radiotherapy. The second survey collected data on respondents' usual practice in radiotherapy contouring. RESULTS The median time to contour one radiotherapy case was 85 minutes (IQR = 50-131 minutes). Marked variability between and within tumour sites was evident: paediatric cancers took the most time (median = 210 minutes, IQR = 87.5 minutes), followed by head and neck and gynaecological cancers (median = 120 minutes, IQR = 71 and 72.5 minutes respectively). Breast cancer contouring required the least time (median = 43 minutes, IQR = 60 minutes). Radiotherapy technique, inclusion of nodes and 4D CT planning were associated with longer contouring times. A non-medical professional was involved in contouring in 65% of cases, but clinical oncology consultants were involved in target volume delineation in 90% of cases, and OARs in 74%. Peer review took place in 46% of cases with 56% of consultants reporting no time for peer review in their job plan. CONCLUSION Contouring for radical radiotherapy is complex and time-consuming, and despite increasing involvement of non-medical professionals, clinical oncology consultants remain the primary practitioners. Peer review practice is variable and time is often a limiting factor. Many factors influence the time required for contouring, and departments should take these factors and the need for peer-review into account when developing job plans.
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Affiliation(s)
- E Montague
- Royal College of Radiologists, 63 Lincoln's Inn Fields, London, UK; Leeds Cancer Centre, St James's University Hospital, Beckett Street, Leeds, UK
| | - T Roques
- Royal College of Radiologists, 63 Lincoln's Inn Fields, London, UK; Norfolk and Norwich University Hospitals Foundation Trust, Colney Ln, Norwich, UK
| | - K Spencer
- Leeds Cancer Centre, St James's University Hospital, Beckett Street, Leeds, UK; Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - A Burnett
- Royal College of Radiologists, 63 Lincoln's Inn Fields, London, UK; Weston Park Hospital, Whitham Road, Sheffield, UK
| | - J Lourenco
- Royal College of Radiologists, 63 Lincoln's Inn Fields, London, UK
| | - N Thorp
- Royal College of Radiologists, 63 Lincoln's Inn Fields, London, UK; The Christie NHS Foundation Trust, Wilmslow Road, Manchester, UK.
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Liu J, Eisenbeis L, Preston S, Burnett A, DiCarlo H, O'Brien Coon D. Post-Phalloplasty Urinary Function Test: A Novel Outcome Instrument to Capture Urinary Dysfunction and Quality of Life after Phalloplasty. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.168] [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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Burnett A, Johnson P, Locke I, Illidge T. The Radiotherapy Learning Healthcare System - Working Together to Improve the Quality of Radiotherapy Nationally. Clin Oncol (R Coll Radiol) 2022; 34:411-414. [PMID: 35120791 DOI: 10.1016/j.clon.2021.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/23/2021] [Accepted: 12/13/2021] [Indexed: 11/19/2022]
Affiliation(s)
- A Burnett
- NHS England and NHS Improvement, London, UK.
| | - P Johnson
- NHS England and NHS Improvement, London, UK
| | - I Locke
- NHS England and NHS Improvement, London, UK
| | - T Illidge
- The University of Manchester, Manchester, UK
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Towe M, Osman M, Huynh L, El-Khatib F, Andrianne R, Broderick G, Burnett A, Clavell-Hernandez J, Gross M, Guise A, Hatzichristodoulou G, Henry G, Hsieh T, Jenkins L, Lentz A, Munarriz R, Osmonov D, Sung Hun P, Perito P, Sadeghi-Nejad H, Simhan J, Wang R, Yafi F. Effect of antimicrobial dipping solutions on post-operative infection rates in diabetic patients undergoing primary insertion of a Coloplast titan inflatable penile prosthesis. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33090-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Burnett A, El Rassi F, Darbari D, Paulose J, Lainé D, Purkayastha D, Kato G. 147 A Prospective Phase II, Open-Label, Single-arm, Multicenter Study to Assess the Efficacy and Safety of SEG101 (Crizanlizumab) in Sickle Cell Disease Patients With Priapism (SPARTAN). J Sex Med 2020. [DOI: 10.1016/j.jsxm.2019.11.092] [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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Russell N, Hills R, Kjeldsen L, Spearing R, Burnett A. PF264 TREATMENT INTENSIFICATION WITH FLAG-IDA MAY IMPROVE DISEASE CONTROL IN YOUNGER PATIENTS WITH SECONDARY AML WHICH MANIFESTS ITSELF WITH LONGER FOLLOW-UP: LONG-TERM ANALYSIS OF THE MRC AML15 TRIAL. Hemasphere 2019. [DOI: 10.1097/01.hs9.0000559268.88438.2b] [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: 11/25/2022] Open
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Hawksworth D, Campbell J, Burnett A. 045 Combined Urethral Surgery at Time of Penile Prosthesis Implantation does not Increase Risk of Device Infection. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hawksworth D, Liu J, Burnett A. 246 Urethral Bulking at Time of Artificial Urinary Sphincter Implantation. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Joseph C, Hawksworth D, Campbell J, Burnett A. 236 Long-standing Diabetes and Poor Glycemic Control Result in Worse Peyronie's Curvature. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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La Favor J, Bivalacqua T, Burnett A. 067 Rapamycin Suppresses NADPH Oxidase-mediated Reactive Oxygen Species Production and Reverses Erectile Dysfunction in Western Diet-fed Mice. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.01.078] [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: 11/27/2022]
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11
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Thompson L, Lee C, Burnett A. Does chemotherapy offer a survival benefit to NSCLC patients with a performance status of 2? Lung Cancer 2019. [DOI: 10.1016/s0169-5002(19)30159-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Burnett A, Uwamaliya P. 2.8-W1Caring for refugees, survivors of torture and other vulnerable migrants, whilst also looking after yourself. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky049.010] [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: 11/12/2022] Open
Affiliation(s)
| | - A Burnett
- Freedom from Torture, London, United Kingdom
| | - P Uwamaliya
- Health and Community, Liverpool John Moores University, United Kingdom
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Vögtle FN, Brändl B, Larson A, Pendziwiat M, Friederich MW, White SM, Basinger A, Kücükköse C, Muhle H, Jähn JA, Keminer O, Helbig KL, Delto CF, Myketin L, Mossmann D, Burger N, Miyake N, Burnett A, van Baalen A, Lovell MA, Matsumoto N, Walsh M, Yu HC, Shinde DN, Stephani U, Van Hove JLK, Müller FJ, Helbig I. Mutations in PMPCB Encoding the Catalytic Subunit of the Mitochondrial Presequence Protease Cause Neurodegeneration in Early Childhood. Am J Hum Genet 2018; 102:557-573. [PMID: 29576218 PMCID: PMC5985287 DOI: 10.1016/j.ajhg.2018.02.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 02/19/2018] [Indexed: 12/21/2022] Open
Abstract
Mitochondrial disorders causing neurodegeneration in childhood are genetically heterogeneous, and the underlying genetic etiology remains unknown in many affected individuals. We identified biallelic variants in PMPCB in individuals of four families including one family with two affected siblings with neurodegeneration and cerebellar atrophy. PMPCB encodes the catalytic subunit of the essential mitochondrial processing protease (MPP), which is required for maturation of the majority of mitochondrial precursor proteins. Mitochondria isolated from two fibroblast cell lines and induced pluripotent stem cells derived from one affected individual and differentiated neuroepithelial stem cells showed reduced PMPCB levels and accumulation of the processing intermediate of frataxin, a sensitive substrate for MPP dysfunction. Introduction of the identified PMPCB variants into the homologous S. cerevisiae Mas1 protein resulted in a severe growth and MPP processing defect leading to the accumulation of mitochondrial precursor proteins and early impairment of the biogenesis of iron-sulfur clusters, which are indispensable for a broad range of crucial cellular functions. Analysis of biopsy materials of an affected individual revealed changes and decreased activity in iron-sulfur cluster-containing respiratory chain complexes and dysfunction of mitochondrial and cytosolic Fe-S cluster-dependent enzymes. We conclude that biallelic mutations in PMPCB cause defects in MPP proteolytic activity leading to dysregulation of iron-sulfur cluster biogenesis and triggering a complex neurological phenotype of neurodegeneration in early childhood.
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Affiliation(s)
- F-Nora Vögtle
- Institute of Biochemistry and Molecular Biology, ZBMZ, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany.
| | - Björn Brändl
- Department of Psychiatry and Psychotherapy, University Hospital Schleswig Holstein, Kiel 24105, Germany
| | - Austin Larson
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, Aurora, CO 80045, USA
| | - Manuela Pendziwiat
- Department of Neuropediatrics, Christian-Albrechts-University of Kiel, Kiel 24105, Germany
| | - Marisa W Friederich
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, Aurora, CO 80045, USA
| | - Susan M White
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne, VIC 3052, Australia; Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Alice Basinger
- Cook Children's Physician Network, Department of Genetics, Fort Worth, TX 76102, USA
| | - Cansu Kücükköse
- Institute of Biochemistry and Molecular Biology, ZBMZ, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany; Faculty of Biology, University of Freiburg, Freiburg 79104, Germany
| | - Hiltrud Muhle
- Department of Neuropediatrics, Christian-Albrechts-University of Kiel, Kiel 24105, Germany
| | - Johanna A Jähn
- Department of Neuropediatrics, Christian-Albrechts-University of Kiel, Kiel 24105, Germany
| | - Oliver Keminer
- Fraunhofer-Institut für Molekularbiologie und Angewandte Ökologie IME, ScreeningPort, Hamburg 22525, Germany
| | - Katherine L Helbig
- Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Carolyn F Delto
- Rudolf Virchow Center for Experimental Biomedicine, University of Würzburg, Würzburg 97080, Germany
| | - Lisa Myketin
- Institute of Biochemistry and Molecular Biology, ZBMZ, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany
| | - Dirk Mossmann
- Institute of Biochemistry and Molecular Biology, ZBMZ, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany
| | - Nils Burger
- Institute of Biochemistry and Molecular Biology, ZBMZ, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany
| | - Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Audrey Burnett
- Cook Children's Physician Network, Department of Genetics, Fort Worth, TX 76102, USA
| | - Andreas van Baalen
- Department of Neuropediatrics, Christian-Albrechts-University of Kiel, Kiel 24105, Germany
| | - Mark A Lovell
- Department of Pathology, University of Colorado, Aurora, CO 80045, USA
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Maie Walsh
- Adult Genetic Medicine, Royal Melbourne Hospital, Melbourne, VIC 3052, Australia
| | - Hung-Chun Yu
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, Aurora, CO 80045, USA
| | - Deepali N Shinde
- Division of Clinical Genomics, Ambry Genetics, Aliso Viejo, CA 92656, USA
| | - Ulrich Stephani
- Department of Neuropediatrics, Christian-Albrechts-University of Kiel, Kiel 24105, Germany
| | - Johan L K Van Hove
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, Aurora, CO 80045, USA
| | - Franz-Josef Müller
- Department of Psychiatry and Psychotherapy, University Hospital Schleswig Holstein, Kiel 24105, Germany; Max Planck Institute for Molecular Genetics, Berlin 14195, Germany
| | - Ingo Helbig
- Department of Neuropediatrics, Christian-Albrechts-University of Kiel, Kiel 24105, Germany; Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
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Musicki B, Karakus S, Anele U, Silva F, Burnett A. 162 Dysregulated NO Signaling in the Lower Genitourinary Tract: A Common Mechanism of Erection and Micturition Dysfunction in a Mouse Model of Sickle Cell Disease. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2017.11.120] [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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15
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Garikipati S, Prakash A, Alhilali M, Burnett A, Lee C, Young R, Danson S, Bates E, Fisher P, Hatton M, Das T. Management and outcomes of patients with small cell lung cancer in North Trent. Lung Cancer 2018. [DOI: 10.1016/s0169-5002(18)30194-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Musicki B, Lagoda G, Goetz T, La Favor J, Burnett A. 062 Transnitrosylation in Nitric Oxide-Mediated Penile Erection. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.076] [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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17
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Metzger S, Morrison B, Trock B, Burnett A. 186 Analysis of the Priapism Impact Profile in a Sample of Jamaican Men. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.175] [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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18
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Wong SH, Huang WY, Cerin E, Gao Y, Lai PC, Burnett A. Home and neighbourhood environment: association with children's physical activity and obesity-related dietary behaviour. Hong Kong Med J 2016; 22 Suppl 6:43-47. [PMID: 27807318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023] Open
Affiliation(s)
- S H Wong
- Department of Sports Science and Physical Education, Chinese University of Hong Kong
| | - W Y Huang
- Department of Physical Education, Hong Kong Baptist University
| | - E Cerin
- Institute for Health and Ageing, Australian Catholic University
| | - Y Gao
- Department of Physical Education, Hong Kong Baptist University
| | - P C Lai
- Department of Geography, University of Hong Kong
| | - A Burnett
- School of Medical and Health Sciences, Edith Cowan University
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Abstract
Gradual ascent to high altitude is typically associated with reduced resting aldosterone and unchanged cortisol, features that may facilitate acclimatization but are poorly understood. The aim of the study was to investigate the cortisol and aldosterone response to adrenocorticotrophic hormone at altitude. Eleven subjects underwent a 250 μg short synacthen test at sea-level and again after trekking to 3 600 m in Nepal. Cortisol and aldosterone were measured by conventional assay from blood samples taken immediately prior to the administration of synacthen (T0) and then 30 (T30) and 60 (T60) min later. At 3 600 m resting basal cortisol and aldosterone levels were both significantly lower than they were at sea-level (p=0.004, p=0.003, respectively). Cortisol values at T30 and T60 were not different between sea-level and 3 600 m but the increment after synacthen was significantly greater (p=0.041) at 3 600 m due to a lower basal value. Aldosterone at T30 and T60 was significantly lower (p=0.003 for both) at 3 600 m than at sea-level and the increment following synacthen was also significantly less (p=0.003) at 3 600 m. At 3 600 m there appears to be a divergent adrenal response to synthetic adrenocorticotrophic hormone with an intact cortisol response but a reduced aldosterone response, relative to sea-level. This may reflect a specific effect of hypoxia on aldosterone synthesis and may be beneficial to acclimatization.
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Affiliation(s)
- J Mackey
- Newcastle University, Newcastle, UK
| | - A Mellor
- Royal Centre for Defence Medicine, Birmingham, UK
| | - J Watchorn
- Intensive Care Department, Royal Berkshire Hospital, Reading, UK
| | - A Burnett
- Blood Sciences, Royal Victoria Infirmary, Newcastle, UK
| | - C Boot
- Blood Sciences, Royal Victoria Infirmary, Newcastle, UK
| | - D Woods
- Royal Centre for Defence Medicine, Birmingham, UK
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Sopko N, Matsui H, Liu X, Burnett A, Bivalacqua T. HP-07-003 Ex-vivo mixed lymphocyte reaction model of human corporal tissue can be used to assess the effects of rejection on erectile function in the setting of penile transplantation. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.03.142] [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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Pineda M, Khurgin J, Anele U, Burnett A. 064 Risk Factors for Surgical Revision after Penile Prosthesis Surgery. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.02.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bradbury C, Houlton AE, Akiki S, Gregg R, Rindl M, Khan J, Ward J, Khan N, Griffiths M, Nagra S, Hills R, Burnett A, Russell N, Vyas P, Grimwade D, Craddock C, Freeman SD. Prognostic value of monitoring a candidate immunophenotypic leukaemic stem/progenitor cell population in patients allografted for acute myeloid leukaemia. Leukemia 2014; 29:988-91. [PMID: 25425198 PMCID: PMC4391965 DOI: 10.1038/leu.2014.327] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- C Bradbury
- Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK
| | - A E Houlton
- 1] Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK [2] Cancer Research UK Clinical Trials Unit, School of Cancer Sciences, University of Birmingham, Birmingham, UK
| | - S Akiki
- West Midlands Regional Genetics Laboratory, Birmingham Women's Hospital, Birmingham, UK
| | - R Gregg
- Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK
| | - M Rindl
- West Midlands Regional Genetics Laboratory, Birmingham Women's Hospital, Birmingham, UK
| | - J Khan
- Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK
| | - J Ward
- Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK
| | - N Khan
- Department of Clinical Immunology, University of Birmingham, Birmingham, UK
| | - M Griffiths
- West Midlands Regional Genetics Laboratory, Birmingham Women's Hospital, Birmingham, UK
| | - S Nagra
- Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK
| | - R Hills
- Department of Haematology, Cardiff University, Cardiff, UK
| | - A Burnett
- Department of Haematology, Cardiff University, Cardiff, UK
| | - N Russell
- Department of Haematology, Nottingham University Hospital NHS Trust, Nottingham, UK
| | - P Vyas
- 1] MRC Molecular Haematology Unit, WIMM, University of Oxford, Oxford, UK [2] Department of Haematology, Radcliffe Hospitals NHS Trust, Oxford, UK
| | - D Grimwade
- 1] Department of Medical & Molecular Genetics, King's College London, Faculty of Life Sciences and Medicine, London, UK [2] Department of Haematology, Guy's & St. Thomas' NHS Foundation Trust, London, UK
| | - C Craddock
- 1] Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK [2] Cancer Research UK Clinical Trials Unit, School of Cancer Sciences, University of Birmingham, Birmingham, UK
| | - S D Freeman
- 1] Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK [2] Department of Clinical Immunology, University of Birmingham, Birmingham, UK
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Mellor AJ, Boos CJ, Ball S, Burnett A, Pattman S, Redpath M, Woods DR. Copeptin and arginine vasopressin at high altitude: relationship to plasma osmolality and perceived exertion. Eur J Appl Physiol 2014; 115:91-8. [PMID: 25213006 DOI: 10.1007/s00421-014-2994-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 09/01/2014] [Indexed: 11/27/2022]
Abstract
PURPOSE A diuresis is a key part of acclimatisation to high altitude (HA). Arginine vasopressin (AVP) is a hormone involved in salt and water balance and may potentially have a role in the development of altitude illness. ProAVP (copeptin) is more stable than AVP and is assayed by a straightforward, automated method. We investigated the relationship of AVP to copeptin and the copeptin response to exercise and altitude illness in a large cohort during a field study at HA. METHODS 48 subjects took part in a 10-day trek at HA. Venous blood samples were taken at 3,833, 4,450 and 5,129 m post-trek (exercise) and the following day at rest. Daily recordings of symptoms of altitude illness, oxygen saturations and perceived exertion were carried out. RESULTS AVP and copeptin levels increased with exercise and correlated closely (ρ 0.621 p < 0.001), this was strongest in the stressed state when AVP secretion was highest, at 5,129 m post-exercise (ρ 0.834 p < 0.001). On two-way ANOVA, both altitude (F = 3.5; p = 0.015) and exercise (F = 10.2; p = 0.002) influenced copeptin levels (interaction F = 2.2; p = 0.08). AVP levels were influenced by exercise (F = 14.4; p = 0.0002) but not altitude (F = 2.0; p = 0.12) with no overall group interactions (F = 1.92.6; p = 0.06). There was no association between copeptin or arginine vasopressin and altitude illness. Copeptin correlated with the Borg RPE score and was significantly higher in the group with a Borg score ≥15 (7.9 vs. 3.7 p < 0.001). CONCLUSION We have shown that arginine vasopressin and copeptin levels correlate and are suppressed below 5,129 m. Furthermore, we have demonstrated that exertion, rather than altitude illness or increasing osmolality, is the stimulus for increases in copeptin.
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Affiliation(s)
- A J Mellor
- Defence Medical Services, Lichfield, UK,
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Le B, Chen H, Zirkin B, Burnett A. New targets for increasing endogenous testosterone production: clinical implications and review of the literature. Andrology 2014; 2:484-90. [DOI: 10.1111/j.2047-2927.2014.00225.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 03/03/2014] [Accepted: 04/06/2014] [Indexed: 12/30/2022]
Affiliation(s)
- B. Le
- The James Buchanan Brady Urological Institute; Johns Hopkins Hospital; Baltimore MD USA
| | - H. Chen
- Department of Biochemistry and Molecular Biology, The Bloomberg School of Public Health; Johns Hopkins University; Baltimore MD USA
| | - B. Zirkin
- Department of Biochemistry and Molecular Biology, The Bloomberg School of Public Health; Johns Hopkins University; Baltimore MD USA
| | - A. Burnett
- The James Buchanan Brady Urological Institute; Johns Hopkins Hospital; Baltimore MD USA
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Burnett A, Davey CG, Wood SJ, Wilson-Ching M, Molloy C, Cheong JLY, Doyle LW, Anderson PJ. Extremely preterm birth and adolescent mental health in a geographical cohort born in the 1990s. Psychol Med 2014; 44:1533-1544. [PMID: 23981686 DOI: 10.1017/s0033291713002158] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Preterm birth confers risk for poor outcome, including mental health problems. Survival of extremely preterm (EP; <28 weeks' gestation) or extremely low birthweight (ELBW; <1000 g) infants increased in the 1990s but psychiatric outcomes in older adolescents born preterm since 1990 are not well documented. This study aimed to characterize mental health and personality traits in a prospective geographical cohort of adolescents born EP/ELBW in Victoria, Australia in 1991 and 1992. METHOD At age 18 years, 215 EP/ELBW and 157 normal birthweight (>2499 g) control adolescents completed the Structured Clinical Interview for DSM-IV Disorders, Axis 1 Non-Patient version (SCID-I/NP), the Children's Interview for Psychiatric Syndromes (ChIPS) attention deficit hyperactivity disorder (ADHD) module, and questionnaires assessing recent depression and anxiety symptoms and personality traits. RESULTS ADHD prevalence was significantly elevated in EP/ELBW adolescents compared with controls [15% v. 7%; odds ratio (OR) 2.67, 95% confidence interval (CI) 1.08-6.58]. Aside from ADHD, however, EP/ELBW and control adolescents reported very similar outcomes, with other lifetime diagnoses identified in 23% of EP/ELBW and 21% of controls. These were predominantly mood and anxiety disorders (21% EP/ELBW, 20% controls). The groups did not differ in recent depression or anxiety symptoms assessed using questionnaires, and personality traits were also similar. CONCLUSIONS ADHD was more prevalent in EP/ELBW adolescents than controls, which is consistent with some, but not all, reports on preterm survivors born before the 1990s, and younger preterm children born in the 1990s. The high rates of anxiety and mood disorders were similar in both groups, and comparable with population-based estimates.
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Affiliation(s)
- A Burnett
- Clinical Sciences, Murdoch Children's Research Institute, Parkville, Victoria, Australia; and Premature Infant Follow-up Program, Royal Women's Hospital, Melbourne, Australia
| | - C G Davey
- Orygen Youth Health Research Centre, Centre for Youth Mental Health, University of Melbourne, Australia
| | - S J Wood
- School of Psychology, University of Birmingham, UK
| | - M Wilson-Ching
- Clinical Sciences, Murdoch Children's Research Institute, Parkville, Victoria, Australia; and Premature Infant Follow-up Program, Royal Women's Hospital, Melbourne, Australia
| | - C Molloy
- Clinical Sciences, Murdoch Children's Research Institute, Parkville, Victoria, Australia; and Premature Infant Follow-up Program, Royal Women's Hospital, Melbourne, Australia
| | - J L Y Cheong
- Clinical Sciences, Murdoch Children's Research Institute, Parkville, Victoria, Australia; and Premature Infant Follow-up Program, Royal Women's Hospital, Melbourne, Australia
| | - L W Doyle
- Clinical Sciences, Murdoch Children's Research Institute, Parkville, Victoria, Australia; and Premature Infant Follow-up Program, Royal Women's Hospital, Melbourne, Australia
| | - P J Anderson
- Clinical Sciences, Murdoch Children's Research Institute, Parkville, Victoria, Australia; and Premature Infant Follow-up Program, Royal Women's Hospital, Melbourne, Australia
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Alfaidi M, Wilson HL, Burnett A, Abdul-Aema BH, Ridger V, Chamberlain J, Francis SE. 2 IL-1B Secretion in Coronary Vascular Endothelium is Mediated by Neutrophil Serine Protease and is Independent of caspase-1. Heart 2014. [DOI: 10.1136/heartjnl-2013-305297.2] [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: 11/04/2022]
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Angyal A, Daigneault M, Hadadi E, Ariaans M, Burnett A, Wilson H, Ridger V, Kiss-Toth E. 235 TRIBBLES-1 CONTRIBUTES TO MONOCYTE MIGRATION IN EXPERIMENTAL PERITONITIS. Heart 2013. [DOI: 10.1136/heartjnl-2013-304019.235] [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: 11/04/2022]
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Burnett A, Daigneault M, Hellewell P, Ridger V. 200 NEUTROPHIL-DERIVED MICROPARTICLES MODULATE MONOCYTE MIGRATION IN AN ENDOTHELIAL DEPENDENT MANNER. Heart 2013. [DOI: 10.1136/heartjnl-2013-304019.200] [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: 11/03/2022]
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Alfaidi M, Wilson H, Burnett A, Chamberlain J, Francis S. 172 IL-1 BETA SECRETION IN CORONARY VASCULAR ENDOTHELIUM IS MEDIATED BY NEUTROPHIL SERINE PROTEASE AND IS INDEPENDENT OF CASPASE-1. Heart 2013. [DOI: 10.1136/heartjnl-2013-304019.172] [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: 11/04/2022]
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Burnett A, Chokshi R. Sensitivity of ERCP Standard Cytology: 10 Year Review of the Literature. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.179] [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: 10/27/2022]
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Craddock C, Quek L, Goardon N, Freeman S, Siddique S, Raghavan M, Aztberger A, Schuh A, Grimwade D, Ivey A, Virgo P, Hills R, McSkeane T, Arrazi J, Knapper S, Brookes C, Davies B, Price A, Wall K, Griffiths M, Cavenagh J, Majeti R, Weissman I, Burnett A, Vyas P. Azacitidine fails to eradicate leukemic stem/progenitor cell populations in patients with acute myeloid leukemia and myelodysplasia. Leukemia 2012; 27:1028-36. [PMID: 23223186 DOI: 10.1038/leu.2012.312] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Epigenetic therapies demonstrate significant clinical activity in acute myeloid leukemia (AML) and myelodysplasia (MDS) and constitute an important new class of therapeutic agents. However hematological responses are not durable and disease relapse appears inevitable. Experimentally, leukemic stem/progenitor cells (LSC) propagate disease in animal models of AML and it has been postulated that their relative chemo-resistance contributes to disease relapse. We serially measured LSC numbers in patients with high-risk AML and MDS treated with 5'-azacitidine and sodium valproate (VAL-AZA). Fifteen out of seventy-nine patients achieved a complete remission (CR) or complete remission with incomplete blood count recovery (CRi) with VAL-AZA therapy. There was no significant reduction in the size of the LSC-containing population in non-responders. While the LSC-containing population was substantially reduced in all patients achieving a CR/CRi it was never eradicated and expansion of this population antedated morphological relapse. Similar studies were performed in seven patients with newly diagnosed AML treated with induction chemotherapy. Eradication of the LSC-containing population was observed in three patients all of whom achieved a durable CR in contrast to patients with resistant disease where LSC persistence was observed. LSC quantitation provides a novel biomarker of disease response and relapse in patients with AML treated with epigenetic therapies. New drugs that target this cellular population in vivo are required.
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Affiliation(s)
- C Craddock
- Centre for Clinical Haematology, Queen Elizabeth Hospital, Birmingham, UK.
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Burnett A, Hellewell P, Ridger V. 10 Regulation of Monocyte-Endothelial Cell Interactions by Neutrophil-Derived Microparticles. Heart 2012. [DOI: 10.1136/heartjnl-2012-302951.010] [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: 11/03/2022]
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Pallis M, Hills R, White P, Grundy M, Russell N, Burnett A. Analysis of the interaction of induction regimens with p-glycoprotein expression in patients with acute myeloid leukaemia: results from the MRC AML15 trial. Blood Cancer J 2011; 1:e23. [PMID: 22829167 PMCID: PMC3255268 DOI: 10.1038/bcj.2011.23] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 03/30/2011] [Accepted: 04/27/2011] [Indexed: 11/16/2022] Open
Abstract
Retrospective analyses in non-randomised cohorts suggest that regimens containing fludarabine/Ara C and/or idarubicin/ara C may be more effective than daunorubicin/AraC (DA)-containing regimens in cases of acute myeloid leukaemia (AML) overexpressing p-glycoprotein (Pgp). We prospectively measured Pgp protein and function by flow cytometry in CD45-gated blasts from 434 AML15 trial patients randomised to remission induction therapy with two courses of FLAG-Ida or DA±etoposide (DA/ADE). In all, 34% were positive for Pgp protein and 38% for function. Pgp protein-positive cases had a higher incidence of resistant disease (14% vs 5%), adjusted odds ratio 2.67 (1.14–6.24). There was a trend towards a higher cumulative incidence of relapse at 5 years for Pgp-positive cases (46% vs 55%), adjusted hazard ratio 1.42 (0.98–2.07) (P=0.06). For patients treated with FLAG-Ida, the complete remission (CR) rate was 86% for both Pgp-positive and Pgp-negative patients. In patients treated with DA/ADE, 78% of Pgp-positive and 90% of Pgp-negative cases achieved CR (P=0.06). In analyses of overall survival, there was no interaction between treatment received and Pgp expression. Data for Pgp function followed similar trends. Our data suggest that FLAG-Ida may improve the remission rate for Pgp-positive AML, but the malignant clone is reduced rather than eradicated such that the relapse rate remains high in Pgp-positive patients.
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Burnett A, Lalancette N, McFarland K. First Report of the Peach Brown Rot Fungus Monilinia fructicola Resistant to Demethylation Inhibitor Fungicides in New Jersey. Plant Dis 2010; 94:126. [PMID: 30754423 DOI: 10.1094/pdis-94-1-0126a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Reduced sensitivity and resistance of Monilinia fructicola to demethylation inhibitors (DMIs; fungicide group 3) have been previously found in stone fruit orchards in Georgia, South Carolina, Ohio, and New York (2). Resistance development is a major concern because of the importance of DMIs for brown rot management. Eleven single-spore isolates, originally collected during 2006 from separate commercial peach (Prunus persica) orchards in southern New Jersey, were removed from cold storage (5°C) in early 2008 and examined in vitro for resistance to the DMI propiconazole (Orbit 3.6EC; Syngenta Crop Protection, Inc., Greensboro, NC). After 19 months at 5°C, isolate 7 was inhibited 53.4% in growth on potato dextrose agar (PDA) amended at the discretionary dose of 0.3 μg/ml propiconazole; inhibition of the remaining isolates ranged from 81.4 to 100%. Inhibition values were based on two replications of eight colonies per isolate performed after incubation at 25°C for 4 days. Because of the previously reported relationship between duration of cold storage and propiconazole sensitivity, isolate 7 was tentatively deemed resistant (1). To confirm the in vitro results, isolates were grown at 25°C for 7 days on cellophane over PDA. Genomic DNA was isolated from mycelium with the DNeasy Plant Mini Kit (Qiagen, Inc., Valencia, CA). PCR with primers INS65-F and INS65-R was conducted on a GeneAmp thermal cycler (Applied Biosystems, Inc., Foster City, CA) as described previously to amplify a 65-bp region named 'Mona' associated with DMI resistance (2). PCR products were separated via electrophoresis on 0.8% agarose gel. The primers amplified a 376-bp fragment from isolate 7 and a 311-bp fragment from all other isolates, thus indicating the presence of Mona in isolate 7. Restriction fragment length polymorphism analysis using the BsrBI enzyme, specific to a single restriction site within Mona, was conducted on the amplified fragments from all isolates. Electrophoresis results showed digestion of the 376-bp fragment from isolate 7 into 140-bp and 236-bp fragments, thereby confirming the presence of Mona; none of the 311-bp fragments from the remaining isolates were cut by BsrBI. Although economic loss from brown rot has not been reported in New Jersey, these results show that propiconazole-resistant strains have been detected since 2006 and it is most likely that resistant strains of the pathogen are still present in commercial peach orchards. To combat this risk, current brown rot control recommendations are incorporating quinone outside inhibitors (QoIs; fungicide group 11) and carboxamides (fungicide group 7) into control programs as a resistance management strategy. More extensive sampling is planned to ascertain the prevalence and location of resistant strains. References: (1) K. D. Cox et al. Phytopathology 97:448, 2007. (2) C.-X. Luo et al. Plant Dis. 92:1099, 2008.
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Affiliation(s)
- A Burnett
- Department of Plant Biology and Pathology, Agricultural Research and Extension Center, Rutgers University, Bridgeton, NJ 08302-5919
| | - N Lalancette
- Department of Plant Biology and Pathology, Agricultural Research and Extension Center, Rutgers University, Bridgeton, NJ 08302-5919
| | - K McFarland
- Department of Plant Biology and Pathology, Agricultural Research and Extension Center, Rutgers University, Bridgeton, NJ 08302-5919
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Burnett A, Piachaud N, Piachaud T, Kerac M, Hollins S, Harmer C, Cowley P, Barnett L. Michael James Henry Piachaud. West J Med 2009. [DOI: 10.1136/bmj.b5678] [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: 11/04/2022]
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Straker L, Skoss R, Burnett A, Burgess-Limerick R. Effect of visual display height on modelled upper and lower cervical gravitational moment, muscle capacity and relative strain. Ergonomics 2009; 52:204-221. [PMID: 19296320 DOI: 10.1080/00140130802331609] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Head and neck posture is an important factor in neck pain related to computer use; however, the evidence for an optimal posture is unconvincing. This study measured the 3-D postures of 36 young adults during use of three different display heights. Cervical extensor muscle strain was estimated using modelled gravitational load moments and muscle capacities. The influence of more or less upper vs. lower cervical movement was also explored across a broad range of potential postures. Overall cervical extensor muscle capacity diminished away from a neutral posture whilst gravity moment increased with flexion. Overall cervical extensor muscle strain increased with head flexion but remained stable into head extension. Individual differences in the amount of upper and lower cervical movement had an important effect on strain, particularly for some muscles. Computer display height guidelines are an important component of ergonomics practice, yet the relative strain on neck extensor muscles as a function of display height has not been examined. The current findings provide more detailed biomechanical evidence that ergonomists can incorporate with usability and other evidence to determine appropriate display height recommendations.
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Affiliation(s)
- L Straker
- School of Physiotherapy, Curtin University of Technology, Perth, Australia.
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Owen C, Virappane P, Alikian M, Stasevich I, Summers K, Lillington D, Bonnet D, Burnett A, Mills K, Lister TA, Fitzgibbon J. WTX is rarely mutated in acute myeloid leukemia. Haematologica 2008; 93:947-8. [DOI: 10.3324/haematol.12509] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Burnett A, Pui C, Rubnitz J, Ribeiro R, Leung W, Campana D. OP10 AML in children: treatment approach in St. Jude. Leuk Res 2007. [DOI: 10.1016/s0145-2126(07)70290-4] [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: 11/26/2022]
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Burnett A. OP09 MRC trials in acute myeloid leukaemia. Leuk Res 2007. [DOI: 10.1016/s0145-2126(07)70289-8] [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: 10/22/2022]
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Burnett A, Mills K. 199 INVITED Acute myeloid leukaemia. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70313-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Fan WH, Burnett A, Upadhya PC, Cunningham J, Linfield EH, Davies AG. Far-infrared spectroscopic characterization of explosives for security applications using broadband terahertz time-domain spectroscopy. Appl Spectrosc 2007; 61:638-43. [PMID: 17650376 DOI: 10.1366/000370207781269701] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Broadband terahertz time-domain spectroscopy (THz-TDS) has been used to measure the far-infrared (FIR) vibrational spectra of several commonly used pure explosives, including 2,4,6-trinitrotoluene (TNT), 1,3,5-trinitroperhydro-1,3,5-triazine (RDX), 1,3-dinitrato-2,2-bis(nitratomethyl)propane (PETN), and two types of plastic explosive, SEMTEX and SX2. A number of distinct absorption peaks, originating from FIR-active vibrational modes of these polycrystalline energetic materials, were observed in the frequency range 0.3-7.5 THz (10-250 cm(-1)). In addition, the temperature-dependent FIR vibrational spectra of PETN were measured between 4 K and 296 K with several well-resolved absorption peaks observed across this temperature range. We find that as the temperature is reduced, the observed absorption peaks resolve into narrower features and shift towards higher frequencies. The temperature dependence of the spectra is explained in terms of the anharmonicity of the vibrational potentials of crystalline compounds, and an empirical fit is given to describe the peak shift with temperature.
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Affiliation(s)
- W H Fan
- School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom.
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Perich D, Burnett A, O'Sullivan P, Perkin C. LOW BACK PAIN IN ADOLESCENT FEMALE ROWERS: A MULTI-DISCIPLINARY INTERVENTION STUDY. J Biomech 2007. [DOI: 10.1016/s0021-9290(07)70642-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Burnett A, Drouet N, Netto K, Morris I. CAN ESTIMATES OF NECK MUSCLE PHYSIOLOGICAL CROSS SECTIONAL AREA (PCSA) BE MADE FROM EXTERNAL ANTHROPOMETRIC MEASUREMENTS? J Biomech 2007. [DOI: 10.1016/s0021-9290(07)70310-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Saussele S, Adam K, Hochhaus A, Béné MC, Büchner T, Burnett A, Finazzi G, Fonatsch C, Gluckman E, Gökbuget N, Grimwade DJ, Haferlach T, Hallek M, Hasford J, Hoelzer D, Ljungman P, Niederwieser D, Serve H, Simonsson B, de Witte TJ, Hehlmann R. Klinische Forschung im „European LeukemiaNet”. Dtsch Med Wochenschr 2006; 131:2423-6. [PMID: 17054061 DOI: 10.1055/s-2006-955027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- S Saussele
- III. Medizinische Universitätsklinik, Klinikum Mannheim der Universität Heidelberg, 68305 Mannheim.
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Dasgupta RK, Rule S, Johnson P, Davies J, Burnett A, Poynton C, Wilson K, Smith GM, Jackson G, Richardson C, Wareham E, Stars AC, Tollerfield SM, Morgan GJ. Fludarabine phosphate and melphalan: a reduced intensity conditioning regimen suitable for allogeneic transplantation that maintains the graft versus malignancy effect. Bone Marrow Transplant 2006; 37:455-61. [PMID: 16435017 DOI: 10.1038/sj.bmt.1705271] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Reduced intensity conditioning (RIC) for allogeneic stem cell transplantation allows stable donor cell engraftment with the maintenance of a graft versus malignancy effect. Many different regimens exist employing various combinations of chemotherapy, radiotherapy and T-cell depletion. We examined the role of non-T-cell depleted RIC regimens in 56 patients with haematological malignancies. Patients received fludarabine phosphate for 5 days (30 mg/m2 in 35 patients, 25 mg/m2 in 21 patients) and melphalan for 1 day (140 mg/m2 in 36 patients, 100 mg/m2 in 20 patients). Immunosuppression was with CyA alone in 33 patients and CyA/MTX in 23 patients. Twenty-four of the 26 patients with chimerism data showed >95% donor chimerism at 3 months post transplant. aGVHD occurred in 18% of patients receiving CyA/MTX compared to 53% of patients receiving CyA. The 100-day mortality rate was 0.16 (95%CI 0.08-0.28) and 1-year nonrelapse mortality was 0.24 (95%CI 0.13-0.38). Thirty-three patients remained alive and in CR at a median of 19 months post transplant (range 3-38 months). We have shown that patients transplanted with fludarabine phosphate, melphalan 100 mg/m2 and with CyA/MTX as post transplant immunosuppression can achieve good disease control with an acceptable level of toxicity. Further studies are required to confirm these findings.
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Affiliation(s)
- R K Dasgupta
- Department of Haematology, University Hospital Aintree, Liverpool, UK.
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Lowe M, Bahador A, Muderspach L, Lin P, Burnett A, O′Meara A, Roman L, Morrow C. 36. J Minim Invasive Gynecol 2005. [DOI: 10.1016/j.jmig.2005.07.040] [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: 11/27/2022]
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Santin AD, Zhan F, Cane' S, Bellone S, Palmieri M, Thomas M, Burnett A, Roman JJ, Cannon MJ, Shaughnessy J, Pecorelli S. Gene expression fingerprint of uterine serous papillary carcinoma: identification of novel molecular markers for uterine serous cancer diagnosis and therapy. Br J Cancer 2005; 92:1561-73. [PMID: 15785748 PMCID: PMC2362016 DOI: 10.1038/sj.bjc.6602480] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 12/17/2004] [Accepted: 02/01/2005] [Indexed: 01/02/2023] Open
Abstract
Uterine serous papillary cancer (USPC) represents a rare but highly aggressive variant of endometrial cancer, the most common gynecologic tumour in women. We used oligonucleotide microarrays that interrogate the expression of some 10 000 known genes to profile 10 highly purified primary USPC cultures and five normal endometrial cells (NEC). We report that unsupervised analysis of mRNA fingerprints readily distinguished USPC from normal endometrial epithelial cells and identified 139 and 390 genes that exhibited >5-fold upregulation and downregulation, respectively, in primary USPC when compared to NEC. Many of the genes upregulated in USPC were found to represent adhesion molecules, secreted proteins and oncogenes, such as L1 cell adhesion molecule, claudin-3 and claudin-4, kallikrein 6 (protease M) and kallikrein 10 (NES1), interleukin-6 and c-erbB2. Downregulated genes in USPC included SEMACAP3, ras homolog gene family, member I (ARHI), and differentially downregulated in ovarian carcinoma gene 1. Quantitative RT-PCR was used to validate differences in gene expression between USPC and NEC for several of these genes. Owing to its potential as a novel therapeutic marker, expression of the high-affinity epithelial receptor for Clostridium perfringens enterotoxin (CPE) claudin-4 was further validated through immunohistochemical analysis of formalin-fixed paraffin-embedded specimens from which the primary USPC cultures were obtained, as well as an independent set of archival USPC specimens. Finally, the sensitivity of primary USPC to the administration of scalar doses of CPE in vitro was also demonstrated. Our results highlight the novel molecular features of USPC and provide a foundation for the development of new type-specific therapies against this highly aggressive variant of endometrial cancer.
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Affiliation(s)
- A D Santin
- Department of Obstetrics & Gynecology, Division of Gynecologic Oncology, University of Arkansas for Medical Sciences, Little Rock, AR 72205-7199, USA.
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Ardalan B, Livingstone A, Franceschi D, Spector S, Walker G, Ganjei-Azar P, Burnett A, Lima M, Sparling L. Phase II neoadjuvant and adjuvant chemotherapy for localized esophageal carcinoma. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.4147] [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: 11/20/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | - M. Lima
- University of Miami, Miami, FL
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Sonneveld P, Burnett A, Vossebeld P, Ben-Am M, Rosenkranz G, Pfister C, Verhoef G, Dekker A, Ossenkoppele G, Ferrant C, Yin L, Gratwohl A, Kovacsovics T, Vellenga E, Capdeville R, Löwenberg B. Dose-finding study of valspodar (PSC 833) with daunorubicin and cytarabine to reverse multidrug resistance in elderly patients with previously untreated acute myeloid leukemia. Hematol J 2002; 1:411-21. [PMID: 11920222 DOI: 10.1038/sj.thj.6200050] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2000] [Accepted: 05/18/2000] [Indexed: 11/09/2022]
Abstract
INTRODUCTION This trial was designed to determine the maximum tolerated dose of intravenous daunorubicin (DNR) in combination with valspodar and to test the feasibility of P-glycoprotein modulation using valspodar in elderly patients with previously untreated acute myelogenous leukemia receiving standard induction chemotherapy. METHODS Patients > or =60 years of age with previously untreated AML received valspodar (10 mg/kg/24 h by continuous intravenous infusion [CIV] on days 1-4 with a 2-mg/kg loading dose on day 1) in conjunction with two cycles of induction chemotherapy consisting of cytarabine (200 mg/m(2) CIV on days 1-7), and DNR (35 mg/m(2) [cohort 1] or 45 mg/m(2) [cohort 2] on days 1-3, intravenous bolus). Patients were assessed for dose-limiting toxicities (DLT), response rate, event-free and overall survival, and pharmacokinetics of valspodar and DNR. RESULTS Valspodar was well tolerated at the lower DNR dose level (ie, 35 mg/m(2)) resulting in a 21% rate of DLT and only three toxic deaths. Treatment-related mortality was unacceptably high at the 45 mg/m(2) DNR dose level. The complete response rate was 49% overall and similar in both cohorts. The median overall survival of patients was 333 days in cohort 1 compared to 98 days in cohort 2. At baseline, 70% of assessable patients were P-glycoprotein positive. CONCLUSION Substantial inhibition of P-glycoprotein activity can be achieved in this patient population at clinically tolerable doses of valspodar and DNR. The maximum tolerated dose of DNR was established as 35 mg/m(2). This regimen is being further evaluated in phase III trials.
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Affiliation(s)
- P Sonneveld
- Department of Hematology, Cancer Center, University Hospital Rotterdam Dijkzigt Room L407, Dr Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.
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