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Jones M, Higgs S, Dwerryhouse S, Markos V, Mason K, Green C, Nawwar A, Searle J, Lyburn I. Combined positron emission tomography and contrast enhanced CT (PET/CeCT) is a feasible single investigation in the staging of oesophagogastric cancers: single-centre pilot study experience during the COVID-19 pandemic. Ann R Coll Surg Engl 2023. [PMID: 37983017 DOI: 10.1308/rcsann.2023.0070] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023] Open
Abstract
INTRODUCTION Staging of oesophagogastric (OG) cancers usually involves endoscopy (OGD), and separate visits for contrast enhanced computed tomography (CeCT) and positron emission tomography (PET/CT). At the height of the COVID-19 pandemic, some of our patients underwent single-visit combined staging with PET/CeCT. We compare this novel pathway with standard separate imaging in time to completion of staging, to start of treatment, and cost. METHODS We identified all patients discussed at our OG multidisciplinary team (MDT) meeting in 2020. Clinical records revealed dates of investigations and treatments. Data were tabulated in Excel, with statistical analysis in SPSS. All patients followed the same MDT process and image reviewing criteria. Costs were compared using prices supplied by finance departments. RESULTS A total of 211 new patients were discussed at our MDT in 2020. Of these, 48 patients had combined PET/CeCT staging, and 68 had separate scans. Median time (interquartile range) in days from OGD to final imaging was 9 (6-23) for the combined group versus 21 (16-28) for the separate group (p≤0.001). Median time (days) from OGD to treatment start was 37 (29-52) for combined versus 55 (40-71) for separate (p≤0.001). No combined scans were of insufficient diagnostic quality for the MDT. PET/CeCT had a potential cost saving of £113 per patient. CONCLUSIONS PET/CeCT allows accurate radiological staging of OG cancers with a single scan. Patients completed staging and started treatment faster, with a potential saving of £10,509 in one year. PET/CeCT has become standard staging at our trust, and we aim to incorporate radiotherapy planning images too.
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Affiliation(s)
- M Jones
- Gloucestershire Hospitals NHS Foundation Trust, UK
| | - S Higgs
- Gloucestershire Hospitals NHS Foundation Trust, UK
| | | | - V Markos
- Gloucestershire Hospitals NHS Foundation Trust, UK
| | - K Mason
- Gloucestershire Hospitals NHS Foundation Trust, UK
| | - C Green
- Gloucestershire Hospitals NHS Foundation Trust, UK
- Cobalt Medical Charity, UK
| | - A Nawwar
- Gloucestershire Hospitals NHS Foundation Trust, UK
- Cobalt Medical Charity, UK
| | - J Searle
- Gloucestershire Hospitals NHS Foundation Trust, UK
- Cobalt Medical Charity, UK
| | - I Lyburn
- Gloucestershire Hospitals NHS Foundation Trust, UK
- Cobalt Medical Charity, UK
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Norrish G, Kolt G, Cervi E, Field E, Dady K, Ziółkowska L, Olivotto I, Favilli S, Passantino S, Limongelli G, Caiazza M, Rubino M, Baban A, Drago F, Mcleod K, Ilina M, McGowan R, Stuart G, Bhole V, Uzun O, Wong A, Lazarou L, Brown E, Daubeney PE, Lota A, Delle Donne G, Linter K, Mathur S, Bharucha T, Adwani S, Searle J, Popoiu A, Jones CB, Reinhardt Z, Kaski JP. Clinical presentation and long-term outcomes of infantile hypertrophic cardiomyopathy: a European multicentre study. ESC Heart Fail 2021; 8:5057-5067. [PMID: 34486247 PMCID: PMC8712843 DOI: 10.1002/ehf2.13573] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 06/22/2021] [Accepted: 08/04/2021] [Indexed: 11/11/2022] Open
Abstract
AIMS Children presenting with hypertrophic cardiomyopathy (HCM) in infancy are reported to have a poor prognosis, but this heterogeneous group has not been systematically characterized. This study aimed to describe the aetiology, phenotype, and outcomes of infantile HCM in a well-characterized multicentre European cohort. METHODS AND RESULTS Of 301 children diagnosed with infantile HCM between 1987 and 2019 presenting to 17 European centres [male n = 187 (62.1%)], underlying aetiology was non-syndromic (n = 138, 45.6%), RASopathy (n = 101, 33.6%), or inborn error of metabolism (IEM) (n = 49, 16.3%). The most common reasons for presentation were symptoms (n = 77, 29.3%), which were more prevalent in those with syndromic disease (n = 62, 61.4%, P < 0.001), and an isolated murmur (n = 75, 28.5%). One hundred and sixty-one (53.5%) had one or more co-morbidities. Genetic testing was performed in 163 (54.2%) patients, with a disease-causing variant identified in 115 (70.6%). Over median follow-up of 4.1 years, 50 (16.6%) underwent one or more surgical interventions; 15 (5.0%) had an arrhythmic event (6 in the first year of life); and 48 (15.9%) died, with an overall 5 year survival of 85%. Predictors of all-cause mortality were an underlying diagnosis of IEM [hazard ratio (HR) 4.4, P = 0.070], cardiac symptoms (HR 3.2, P = 0.005), and impaired left ventricular systolic function (HR 3.0, P = 0.028). CONCLUSIONS This large, multicentre study of infantile HCM describes a complex cohort of patients with a diverse phenotypic spectrum and clinical course. Although overall outcomes were poor, this was largely related to underlying aetiology emphasizing the importance of comprehensive aetiological investigations, including genetic testing, in infantile HCM.
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Affiliation(s)
- Gabrielle Norrish
- Centre for Inherited Cardiovascular DiseasesGreat Ormond Street HospitalLondonWC1N 3JHUK
- Institute of Cardiovascular Sciences University College LondonLondonUK
| | - Gali Kolt
- Centre for Inherited Cardiovascular DiseasesGreat Ormond Street HospitalLondonWC1N 3JHUK
| | - Elena Cervi
- Centre for Inherited Cardiovascular DiseasesGreat Ormond Street HospitalLondonWC1N 3JHUK
| | - Ella Field
- Centre for Inherited Cardiovascular DiseasesGreat Ormond Street HospitalLondonWC1N 3JHUK
- Institute of Cardiovascular Sciences University College LondonLondonUK
| | - Kathleen Dady
- Centre for Inherited Cardiovascular DiseasesGreat Ormond Street HospitalLondonWC1N 3JHUK
| | - Lidia Ziółkowska
- Department of CardiologyThe Children's Memorial Health InstituteWarsawPoland
| | | | | | - Silvia Passantino
- Careggi University HospitalFlorenceItaly
- Meyer Children's HospitalFlorenceItaly
| | | | | | | | | | | | | | | | - Ruth McGowan
- West of Scotland Centre for Genomic MedicineQueen Elizabeth University HospitalGlasgowUK
| | - Graham Stuart
- University Hospitals Bristol NHS Foundation TrustBristolUK
| | - Vinay Bhole
- Birmingham Women and Children's NHS Foundation TrustBirminghamUK
| | | | - Amos Wong
- University Hospital of WalesCardiffUK
| | | | | | - Piers E.F. Daubeney
- Royal Brompton and Harefield Hospital, National Heart and Lung InstituteImperial College LondonLondonUK
| | - Amrit Lota
- Royal Brompton and Harefield Hospital, National Heart and Lung InstituteImperial College LondonLondonUK
| | - Grazia Delle Donne
- Royal Brompton and Harefield Hospital, National Heart and Lung InstituteImperial College LondonLondonUK
| | | | - Sujeev Mathur
- Evelina London Children's Hospital, Guy's and St Thomas' NHS Foundation TrustLondonUK
| | - Tara Bharucha
- University Hospital Southampton NHS Foundation TrustSouthamptonUK
| | - Satish Adwani
- Oxford University Hospitals NHS Foundation TrustOxfordUK
| | - Jon Searle
- Oxford University Hospitals NHS Foundation TrustOxfordUK
| | - Anca Popoiu
- Department of PediatricsChildren's Hospital ‘Louis Turcanu’, University of Medicine and Pharmacy “Victor Babes” TimisoaraTimisoaraRomania
| | | | | | - Juan Pablo Kaski
- Centre for Inherited Cardiovascular DiseasesGreat Ormond Street HospitalLondonWC1N 3JHUK
- Institute of Cardiovascular Sciences University College LondonLondonUK
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Frick J, Möckel M, Schmiedhofer M, Searle J, Erdmann B, Erhart M, Slagman A. Correction to: Fragebogen zur Inanspruchnahme der Notaufnahmen. Med Klin Intensivmed Notfmed 2017; 114:45. [PMID: 29067475 DOI: 10.1007/s00063-017-0363-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J Frick
- Arbeitsbereich Notfallmedizin/Rettungsstellen, (CVK, CCM), Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Deutschland.
| | - M Möckel
- Arbeitsbereich Notfallmedizin/Rettungsstellen, (CVK, CCM), Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Deutschland
| | - M Schmiedhofer
- Arbeitsbereich Notfallmedizin/Rettungsstellen, (CVK, CCM), Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Deutschland
| | - J Searle
- Arbeitsbereich Notfallmedizin/Rettungsstellen, (CVK, CCM), Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Deutschland
| | - B Erdmann
- Notaufnahme Klinikum Wolfsburg, Wolfsburg, Deutschland
| | - M Erhart
- Zentralinstitut für die kassenärztliche Versorgung in Deutschland, Berlin, Deutschland
| | - A Slagman
- Arbeitsbereich Notfallmedizin/Rettungsstellen, (CVK, CCM), Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Deutschland
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Slagman A, Riedlinger D, Searle J, Von Recum J, Moeckel M. P2714Impact of gender on the diagnostic performance of high-sensitivity cardiac troponin T upon admission: a secondary health data analysis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A. Slagman
- Charité - Universitätsmedizin Berlin, Division of Emergency Medicine (CVK, CCM); Department of Cardiology (CVK), Berlin, Germany
| | - D. Riedlinger
- Charité - Universitätsmedizin Berlin, Division of Emergency Medicine (CVK, CCM); Department of Cardiology (CVK), Berlin, Germany
| | - J. Searle
- Charité - Universitätsmedizin Berlin, Division of Emergency Medicine (CVK, CCM); Department of Cardiology (CVK), Berlin, Germany
| | - J. Von Recum
- Charité - Universitätsmedizin Berlin, Division of Emergency Medicine (CVK, CCM); Department of Cardiology (CVK), Berlin, Germany
| | - M. Moeckel
- Charité - Universitätsmedizin Berlin, Division of Emergency Medicine (CVK, CCM); Department of Cardiology (CVK), Berlin, Germany
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Schmiedhofer M, Searle J, Möckel M, Slagman A. Die Bedeutung der zentralen Notaufnahme für die ambulante Versorgung in ruraler Umgebung: Experteninterviews mit hausärztlich tätigen Ärztinnen und Ärzten einer sachsen-anhaltinischen Stadt mit Mittelzentrumsfunktion und des Landkreises. Gesundheitswesen 2016. [DOI: 10.1055/s-0036-1586564] [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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Schmiedhofer M, Möckel M, Slagman A, Frick J, Searle J. Ambulante Inanspruchnahme einer zentralen Notaufnahme in ruraler Umgebung: Qualitative Befragung zur Motivation von Patientinnen und Patienten ohne dringlichen medizinischen Handlungsbedarf. Gesundheitswesen 2016. [DOI: 10.1055/s-0036-1586563] [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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Windsor J, Searle J, Hanney R, Chapman A, Grigg M, Choong P, Mackay A, Smithers BM, Churchill JA, Carney S, Smith JA, Wainer Z, Talley NJ, Gladman MA. Building a sustainable clinical academic workforce to meet the future healthcare needs of Australia and New Zealand: report from the first summit meeting. Intern Med J 2016; 45:965-71. [PMID: 26332622 DOI: 10.1111/imj.12854] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 06/04/2015] [Indexed: 11/27/2022]
Abstract
The delivery of healthcare that meets the requirements for quality, safety and cost-effectiveness relies on a well-trained medical workforce, including clinical academics whose career includes a specific commitment to research, education and/or leadership. In 2011, the Medical Deans of Australia and New Zealand published a review on the clinical academic workforce and recommended the development of an integrated training pathway for clinical academics. A bi-national Summit on Clinical Academic Training was recently convened to bring together all relevant stakeholders to determine how best to do this. An important part understood the lessons learnt from the UK experience after 10 years since the introduction of an integrated training pathway. The outcome of the summit was to endorse strongly the recommendations of the medical deans. A steering committee has been established to identify further stakeholders, solicit more information from stakeholder organisations, convene a follow-up summit meeting in late 2015, recruit pilot host institutions and engage the government and future funders.
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Affiliation(s)
- J Windsor
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - J Searle
- School of Medicine, Griffith University, Gold Coast, Queensland, Australia
| | - R Hanney
- Department of Surgery, University of Sydney, Sydney, New South Wales, Australia
| | - A Chapman
- New South Wales Office, Royal Australasian College of Surgeons, Sydney, New South Wales, Australia
| | - M Grigg
- Melbourne Office, Royal Australasian College of Surgeons, Melbourne, Victoria, Australia.,Eastern Health Clinical School, Monash University, Melbourne, Victoria, Australia
| | - P Choong
- Department of Surgery, The University of Melbourne, Melbourne, Victoria, Australia
| | - A Mackay
- Australian Academy of Health and Medical Sciences, Melbourne, Victoria, Australia
| | - B M Smithers
- Discipline of Surgery, University of Queensland, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - J A Churchill
- Australian Medical Association Council of Doctors-in-Training, Melbourne, Victoria, Australia.,Austin Health, Melbourne, Victoria, Australia
| | - S Carney
- Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - J A Smith
- Department of Surgery, Monash Medical Centre, Monash University, Melbourne, Victoria, Australia
| | - Z Wainer
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - N J Talley
- The Royal Australasian College of Physicians, Sydney, New South Wales, Australia.,University of Newcastle, Newcastle, New South Wales, Australia
| | - M A Gladman
- Academic Colorectal Unit, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
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Schmiedhofer MH, Searle J, Slagman A, Möckel M. [Exploring Patient Motives to Use Emergency Departments for Non-urgent Conditions: A Qualitative Study]. Gesundheitswesen 2016; 79:835-844. [PMID: 27104309 DOI: 10.1055/s-0042-100729] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background: The increasing utilization of Emergency Departments (ED) by outpatients with acute but non-urgent conditions contributes to ED crowding. This study aims to explore the motives of patients categorized as non-urgent for visiting the ED. Methods: A qualitative study based on semi-structured interviews was conducted at 2 ED's at Charité Berlin. A total of 40 patients categorized as non-urgent were interviewed. Data were analyzed using Qualitative Content Analysis. Results: In addition to unavailable appointments or having to wait a long time for an appointment with general practitioners and specialists, patients stated better time-flexibility, the University Hospital's quality of care and the availability of multidisciplinary care as reasons to seek medical care in the ED. Because of the 24/7 availability of EDs, some patients seem to make little effort to seek an appointment with a GP or a specialist outside the hospital. Conclusion: Our interview data indicate an independent function of EDs in outpatient care. It must be assumed that even a full coverage of service guarantee by the association of statuary health insurance physicians would not reduce ED utilization to cases of medical urgency only. To ensure sustainable medical quality for urgent as well as non-urgent medical care seekers, EDs need appropriate resources to cover the demand.
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Affiliation(s)
- M H Schmiedhofer
- Arbeitsbereich Rettungsstellen/Notfallmedizin, Charité Universitätsmedizin, Berlin
| | - J Searle
- Arbeitsbereich Rettungsstellen/Notfallmedizin, Charité Universitätsmedizin, Berlin
| | - A Slagman
- Arbeitsbereich Rettungsstellen/Notfallmedizin, Charité Universitätsmedizin, Berlin
| | - M Möckel
- Arbeitsbereich Rettungsstellen/Notfallmedizin, Charité Universitätsmedizin, Berlin
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Schmiedhofer M, Searle J, Slagman A, Möckel M. Inanspruchnahme Zentraler Notaufnahmen: Qualitative Erhebung der Motivation von Patientinnen und Patienten mit nichtdringlichem Behandlungsbedarf. Gesundheitswesen 2015. [DOI: 10.1055/s-0035-1563082] [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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Arnold DT, Hooper CE, Morley A, White P, Lyburn ID, Searle J, Darby M, Hall T, Hall D, Rahman NM, De Winton E, Clive A, Masani V, Dangoor A, Guglani S, Jankowska P, Lowndes SA, Harvey JE, Braybrooke JP, Maskell NA. The effect of chemotherapy on health-related quality of life in mesothelioma: results from the SWAMP trial. Br J Cancer 2015; 112:1183-9. [PMID: 25756395 PMCID: PMC4385962 DOI: 10.1038/bjc.2015.77] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 01/25/2015] [Accepted: 02/01/2015] [Indexed: 12/19/2022] Open
Abstract
Background: The effect of chemotherapy on health-related quality of life (HRQoL) in malignant pleural mesothelioma (MPM) is poorly understood. Patient-individualised prognostication and prediction of treatment response from chemotherapy is useful but little evidence exists to guide practice. Method: Consecutive patients with MPM who were fit for first-line chemotherapy with pemetrexed and cisplatin\carboplatin were recruited and followed up for a minimum of 12 months. This study focussed on the HRQoL outcomes of these patients using the EQ-5D, EORTC QLQ-C30 and LC13. Results: Seventy-three patients were recruited of which 58 received chemotherapy and 15 opted for best supportive care (BSC). Compliance with HRQoL questionnaires was 98% at baseline. The chemotherapy group maintained HRQoL compared with the BSC group whose overall HRQoL fell (P=0.006) with worsening dyspnoea and pain. The impact of chemotherapy was irrespective of histological subtype although those with non-epithelioid disease had worse HRQoL at later time points (P=0.012). Additionally, those with a falling mesothelin or improvement on modified-RECIST CT at early follow-up had a better HRQoL at 16 weeks. Conclusions: HRQoL was maintained following chemotherapy compared with a self-selected BSC group. Once chemotherapy is initiated, a falling mesothelin or improved RECIST CT findings infer a quality-of-life advantage.
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Affiliation(s)
- D T Arnold
- Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol BS10 5NB, UK
| | - C E Hooper
- 1] Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol BS10 5NB, UK [2] North Bristol Lung Centre, Southmead Hospital, North Bristol NHS Trust, Bristol BS10 5NB, UK
| | - A Morley
- North Bristol Lung Centre, Southmead Hospital, North Bristol NHS Trust, Bristol BS10 5NB, UK
| | - P White
- Applied Statistics Group, University of West of England (UWE), Bristol BS16 1QY, UK
| | - I D Lyburn
- Cobalt Health, Thirlestaine Road, Cheltenham GL53 7AS, UK
| | - J Searle
- Cobalt Health, Thirlestaine Road, Cheltenham GL53 7AS, UK
| | - M Darby
- Department of Radiology, Southmead Hopsital, North Bristol NHS Trust, Bristol BS10 5NB, UK
| | - T Hall
- Department of Radiology, Royal United Hospital Bath, Bath BA1 3NG, UK
| | - D Hall
- Cobalt Health, Thirlestaine Road, Cheltenham GL53 7AS, UK
| | - N M Rahman
- Oxford Respiratory Clinical Trial Unit (Funded by the NIHR Biomedical Research Centre), Churchill Hospital, Oxford OX3 7LJ, UK
| | - E De Winton
- Department of Oncology, Royal United Hospital Bath, Bath BA1 3NG, UK
| | - A Clive
- Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol BS10 5NB, UK
| | - V Masani
- Department of Respiratory Medicine, Royal United Hospital Bath, Bath BA1 3NG, UK
| | - A Dangoor
- Bristol Haematology and Oncology Centre, University Hospitals Bristol NHS Foundation Trust, Bristol BS2 8ED, UK
| | - S Guglani
- Department of Oncology, Cheltenham General Hospital, Cheltenham GL53 7AN, UK
| | - P Jankowska
- Department of Oncology, Musgrove Park Hospital, Taunton, Severn TA1 5DA, UK
| | - S A Lowndes
- Department of Oncology, Great Western Hospital, Swindon SN3 6BB, UK
| | - J E Harvey
- North Bristol Lung Centre, Southmead Hospital, North Bristol NHS Trust, Bristol BS10 5NB, UK
| | - J P Braybrooke
- Bristol Haematology and Oncology Centre, University Hospitals Bristol NHS Foundation Trust, Bristol BS2 8ED, UK
| | - N A Maskell
- 1] Academic Respiratory Unit, School of Clinical Sciences, University of Bristol, Bristol BS10 5NB, UK [2] North Bristol Lung Centre, Southmead Hospital, North Bristol NHS Trust, Bristol BS10 5NB, UK
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Lindner T, Joachim R, Bieberstein S, Schiffer H, Möckel M, Searle J. Aggressives und herausforderndes Verhalten gegenüber dem Klinikpersonal. Notf Rett Med 2015. [DOI: 10.1007/s10049-015-1982-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Möckel M, Searle J. [Point-of-care testing in preclinical emergency medicine]. Med Klin Intensivmed Notfmed 2014; 109:100-3. [PMID: 24618924 DOI: 10.1007/s00063-013-0299-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 01/16/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Measurement of biological signals directly at the patient (point-of-care testing, POCT) is an established standard in emergency medicine when test results are needed quickly and within a reliable time frame or if external testing requires a disproportionate effort. OBJECTIVES Currently, the rapid test for β-HCG in urine and POCT measurement of lactate, blood gases, cardiac tropinin, haemoglobin, and hematocrit are well established in emergency medicine. POCT of copeptin, fatty acid-binding proteins (FABP), procalcitonin, coagulation values, natriuretic peptides, D-dimer, and toxicological substances are of future interest. In this article, the appropriate use of point-of-care testing in prehospital emergency medicine is discussed. RESULTS Application of POCT is dependent of the underlying conditions, the availability of appropriate devices, and of suitable reference methods in a central laboratory. In addition, economical and quality aspects play an important role. CONCLUSION In emergency departments, POCT is currently developing into a standard measuring method for a number of markers because hospital laboratories are increasingly being merged and consequently reduce their emergency-analytic services. In countries with a high density of hospitals, however, preclinical POCT should be reduced to the minimum necessary.
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Affiliation(s)
- M Möckel
- Arbeitsbereich Notfallmedizin/Rettungsstellen/CPU, Campus Virchow Klinikum und Campus Mitte, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Deutschland,
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Enang OE, Otu AA, Essien OE, Okpara H, Fasanmade OA, Ohwovoriole AE, Searle J. Prevalence of dysglycemia in Calabar: a cross-sectional observational study among residents of Calabar, Nigeria. BMJ Open Diabetes Res Care 2014; 2:e000032. [PMID: 25452872 PMCID: PMC4212572 DOI: 10.1136/bmjdrc-2014-000032] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/06/2014] [Accepted: 05/24/2014] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Population data on dysglycemia are scarce in West Africa. This study aimed to determine the pattern of dysglycemia in Calabar city in South East Nigeria. DESIGN This was a cross-sectional observational study. METHODS 1134 adults in Calabar were recruited. A multistage sampling method randomly selected 4 out of 22 wards, and 50 households from each ward. All adults within each household were recruited and an oral glucose tolerance test was performed. Dysglycemia was defined as any form of glucose intolerance, including: impaired fasting glucose (blood glucose level 110-125 mg/dL), impaired glucose tolerance (blood glucose level ≥140 mg/dL 2 h after consuming 75 g of glucose), or diabetes mellitus (DM), as defined by fasting glucose level ≥126 mg/dL, or a blood glucose level ≥200 mg/dL, 2 h after a 75 g glucose load. RESULTS Mean values of fasting plasma glucose were 95 mg/dL (95% CI 92.1 to 97.5) for men and 96 mg/dL (95% CI 93.2 to 98.6) for women. The overall prevalence of dysglycemia was 24%. The prevalence of impaired fasting glucose was 9%, the prevalence of impaired glucose tolerance 20%, and the prevalence of undiagnosed DM 7%. All values were a few percentage points higher for men than women. CONCLUSIONS The prevalence of undiagnosed DM among residents of Calabar is similar to studies elsewhere in Nigeria but much higher than the previous national prevalence survey, with close to a quarter of the adults having dysglycemia and 7% having undiagnosed DM. This is a serious public health problem requiring a programme of mass education and case identification and management in all health facilities. TRIAL REGISTRATION NUMBER CRS/MH/CR-HREC/020/Vol.8/43.
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Affiliation(s)
- O E Enang
- Department of Internal Medicine, University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria
| | - A A Otu
- Department of Internal Medicine, University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria
| | - O E Essien
- Department of Internal Medicine, University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria
| | - H Okpara
- Department of Chemical Pathology, University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria
| | - O A Fasanmade
- Department of Medicine, Lagos University Teaching Hospital, Lagos, Lagos State, Nigeria
| | - A E Ohwovoriole
- Department of Medicine, Lagos University Teaching Hospital, Lagos, Lagos State, Nigeria
| | - J Searle
- Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
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Pavey TG, Taylor AH, Fox KR, Hillsdon M, Anokye N, Campbell JL, Foster C, Green C, Moxham T, Mutrie N, Searle J, Trueman P, Taylor RS. Republished research: Effect of exercise referral schemes in primary care on physical activity and improving health outcomes: systematic review and meta-analysis. Br J Sports Med 2013; 47:526. [PMID: 23620507 DOI: 10.1136/bjsports-2012-e6462rep] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T G Pavey
- Peninsula College of Medicine and Dentistry, Universities of Exeter and Plymouth, Exeter EX2 4SG, UK.
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Slagman A, Searle J, Von Recum J, Holert F, Mueller C, Ziera T, Struck J, Mockel M. Prosomatostatin as a marker for acute heart failure in unselected patients in the emergency department. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Slagman A, Searle J, Lauterbach T, Vollert JO, Holert F, Muller R, Mueller C, Mockel M. Copeptin and troponin in patients with acute cardiac chief complaints in the emergency department. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p482] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Herse F, Searle J, Vollert JO, Slagman A, Mueller C, Müller DN, Möckel M, Dechend R. Heparin Strongly Induces Soluble Fms-Like Tyrosine Kinase 1 (sFlt1) Release in vivo and in vitro. Geburtshilfe Frauenheilkd 2013. [DOI: 10.1055/s-0033-1347752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Lyburn ID, Russell HC, Searle J, Croucher C, Hall DO. 3T MR imaging: diffusion-weighted and dynamic contrast-enhanced - relationship of apparent diffusion coefficient value and maximum percentage enhancement in invasive lobular carcinoma of the breast. Breast Cancer Res 2012. [PMCID: PMC3542650 DOI: 10.1186/bcr3277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pavey TG, Anokye N, Taylor AH, Trueman P, Moxham T, Fox KR, Hillsdon M, Green C, Campbell JL, Foster C, Mutrie N, Searle J, Taylor RS. The clinical effectiveness and cost-effectiveness of exercise referral schemes: a systematic review and economic evaluation. Health Technol Assess 2012; 15:i-xii, 1-254. [PMID: 22182828 DOI: 10.3310/hta15440] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Exercise referral schemes (ERS) aim to identify inactive adults in the primary-care setting. The GP or health-care professional then refers the patient to a third-party service, with this service taking responsibility for prescribing and monitoring an exercise programme tailored to the needs of the individual. OBJECTIVE To assess the clinical effectiveness and cost-effectiveness of ERS for people with a diagnosed medical condition known to benefit from physical activity (PA). The scope of this report was broadened to consider individuals without a diagnosed condition who are sedentary. DATA SOURCES MEDLINE; EMBASE; PsycINFO; The Cochrane Library, ISI Web of Science; SPORTDiscus and ongoing trial registries were searched (from 1990 to October 2009) and included study references were checked. METHODS Systematic reviews: the effectiveness of ERS, predictors of ERS uptake and adherence, and the cost-effectiveness of ERS; and the development of a decision-analytic economic model to assess cost-effectiveness of ERS. RESULTS Seven randomised controlled trials (UK, n = 5; non-UK, n = 2) met the effectiveness inclusion criteria, five comparing ERS with usual care, two compared ERS with an alternative PA intervention, and one to an ERS plus a self-determination theory (SDT) intervention. In intention-to-treat analysis, compared with usual care, there was weak evidence of an increase in the number of ERS participants who achieved a self-reported 90-150 minutes of at least moderate-intensity PA per week at 6-12 months' follow-up [pooled relative risk (RR) 1.11, 95% confidence interval 0.99 to 1.25]. There was no consistent evidence of a difference between ERS and usual care in the duration of moderate/vigorous intensity and total PA or other outcomes, for example physical fitness, serum lipids, health-related quality of life (HRQoL). There was no between-group difference in outcomes between ERS and alternative PA interventions or ERS plus a SDT intervention. None of the included trials separately reported outcomes in individuals with medical diagnoses. Fourteen observational studies and five randomised controlled trials provided a numerical assessment of ERS uptake and adherence (UK, n = 16; non-UK, n = 3). Women and older people were more likely to take up ERS but women, when compared with men, were less likely to adhere. The four previous economic evaluations identified suggest ERS to be a cost-effective intervention. Indicative incremental cost per quality-adjusted life-year (QALY) estimates for ERS for various scenarios were based on a de novo model-based economic evaluation. Compared with usual care, the mean incremental cost for ERS was £169 and the mean incremental QALY was 0.008, with the base-case incremental cost-effectiveness ratio at £20,876 per QALY in sedentary people without a medical condition and a cost per QALY of £14,618 in sedentary obese individuals, £12,834 in sedentary hypertensive patients, and £8414 for sedentary individuals with depression. Estimates of cost-effectiveness were highly sensitive to plausible variations in the RR for change in PA and cost of ERS. LIMITATIONS We found very limited evidence of the effectiveness of ERS. The estimates of the cost-effectiveness of ERS are based on a simple analytical framework. The economic evaluation reports small differences in costs and effects, and findings highlight the wide range of uncertainty associated with the estimates of effectiveness and the impact of effectiveness on HRQoL. No data were identified as part of the effectiveness review to allow for adjustment of the effect of ERS in different populations. CONCLUSIONS There remains considerable uncertainty as to the effectiveness of ERS for increasing activity, fitness or health indicators or whether they are an efficient use of resources in sedentary people without a medical diagnosis. We failed to identify any trial-based evidence of the effectiveness of ERS in those with a medical diagnosis. Future work should include randomised controlled trials assessing the cinical effectiveness and cost-effectivenesss of ERS in disease groups that may benefit from PA. FUNDING The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
- T G Pavey
- Peninsula College of Medicine and Dentistry, University of Exeter, Exeter, UK
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Pavey TG, Taylor AH, Fox KR, Hillsdon M, Anokye N, Campbell JL, Foster C, Green C, Moxham T, Mutrie N, Searle J, Trueman P, Taylor RS. Effect of exercise referral schemes in primary care on physical activity and improving health outcomes: systematic review and meta-analysis. BMJ 2011; 343:d6462. [PMID: 22058134 PMCID: PMC3209555 DOI: 10.1136/bmj.d6462] [Citation(s) in RCA: 167] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To assess the impact of exercise referral schemes on physical activity and health outcomes. Design Systematic review and meta-analysis. DATA SOURCES Medline, Embase, PsycINFO, Cochrane Library, ISI Web of Science, SPORTDiscus, and ongoing trial registries up to October 2009. We also checked study references. Study selection Design: randomised controlled trials or non-randomised controlled (cluster or individual) studies published in peer review journals. POPULATION sedentary individuals with or without medical diagnosis. Exercise referral schemes defined as: clear referrals by primary care professionals to third party service providers to increase physical activity or exercise, physical activity or exercise programmes tailored to individuals, and initial assessment and monitoring throughout programmes. Comparators: usual care, no intervention, or alternative exercise referral schemes. RESULTS Eight randomised controlled trials met the inclusion criteria, comparing exercise referral schemes with usual care (six trials), alternative physical activity intervention (two), and an exercise referral scheme plus a self determination theory intervention (one). Compared with usual care, follow-up data for exercise referral schemes showed an increased number of participants who achieved 90-150 minutes of physical activity of at least moderate intensity per week (pooled relative risk 1.16, 95% confidence intervals 1.03 to 1.30) and a reduced level of depression (pooled standardised mean difference -0.82, -1.28 to -0.35). Evidence of a between group difference in physical activity of moderate or vigorous intensity or in other health outcomes was inconsistent at follow-up. We did not find any difference in outcomes between exercise referral schemes and the other two comparator groups. None of the included trials separately reported outcomes in individuals with specific medical diagnoses. Substantial heterogeneity in the quality and nature of the exercise referral schemes across studies might have contributed to the inconsistency in outcome findings. Conclusions Considerable uncertainty remains as to the effectiveness of exercise referral schemes for increasing physical activity, fitness, or health indicators, or whether they are an efficient use of resources for sedentary people with or without a medical diagnosis.
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Affiliation(s)
- T G Pavey
- Peninsula College of Medicine and Dentistry, Universities of Exeter and Plymouth, Exeter EX2 4SG, UK.
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Garmendia ML, Alonso F, Kain J, Corvalan C, de Aguirre M, Searle J. P2-95 Obesity increases 28% in 3 years in premenopausal low-income Chilean women independently of body size misperception. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976i.30] [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: 11/03/2022]
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Searle J, Danne O, Müller C, Mockel M. Biomarkers in acute coronary syndrome and percutaneous coronary intervention. Minerva Cardioangiol 2011; 59:203-223. [PMID: 21516070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The universal definition of myocardial infarction has proved how important the role of biomarkers in the assessment of acute coronary syndrome (ACS) has become. As a result, management of patients with ACS today is more specific and personalized than ever, but there is still a lot of room for improvement. Unmet needs for a faster and more specific rule-in and rule-out of myocardial infarction, for a pronounced risk assessment allowing for standardized guidelines on personalized therapy and for an effective monitoring of our therapeutic efforts to guarantee an optimal risk-benefit turnout still require intensive biomarker research and clinical validation. This review addresses a set of cardiovascular biomarkers with different pathophysiological backgrounds and discusses their diagnostic, prognostic and therapeutic value in the setting of ACS and percutaneous coronary intervention (PCI). The article provides a review of the current knowledge and literature on biomarkers in ACS and PCI, discussing currently used biomarkers like cardiac troponin (cTN), high sensitive cardiac troponin (hscTn), natriuretic peptides (NPs) as well as promising future biomarkers like copeptin, choline and lipoprotein-associated phospholipase A2 (LP-PLA2). The review concentrates on the clinical application of these markers, evaluating not only their diagnostic and prognostic value but also their integrability into routine practice. There are currently a number of new biomarkers and new biomarker assays under investigation which give hope for a much improved diagnostic and risk stratification process. Large diagnostic clinical trials are still needed to evaluate their impact on ACS patient management and subsequent PCI in clinical practice.
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Affiliation(s)
- J Searle
- Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany
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Möckel M, Searle J, Danne O, Müller C. Kardiale Biomarker in der Notfallmedizin. Notf Rett Med 2011. [DOI: 10.1007/s10049-010-1350-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Macdonald K, Searle J, Lyburn I. The role of dual time point FDG PET imaging in the evaluation of solitary pulmonary nodules with an initial standard uptake value less than 2.5. Clin Radiol 2010; 66:244-50. [PMID: 21295203 DOI: 10.1016/j.crad.2010.10.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 10/26/2010] [Accepted: 10/28/2010] [Indexed: 11/26/2022]
Abstract
AIM To evaluate the accuracy of dual time point 2-[(18)F]-fluoro-2-deoxy-d-glucose (FDG) positron-emission tomography (PET) imaging in the evaluation of the mildly metabolic solitary pulmonary nodule (SPN) and to assess whether accuracy could be improved by delaying second image acquisition to 180 minutes. MATERIALS AND METHODS Fifty-four patients were included in the study. Thirty-six had an SUV(max) <2.5 at 60 min. For these patients, two methods of interpreting the subsequent delayed FDG PET imaging at 180 min were investigated. The first method analysed the SUV(max) of SPNs on delayed imaging, in which an SUV(max) of 2.5 or more was regarded as a criterion for malignancy. The second method was retention index (RI) analysis, in which an increase of 10% or more in SUV(max) between the initial and delayed images, was regarded as an indication of malignancy. RESULTS For the group as a whole (n=54), the sensitivity, specificity and accuracy of using an SUV(max) of 2.5 or more as an indication of malignancy at the time of initial image acquisition (60 min) was 58, 89, and 74%, respectively. For SPNs that had an initial SUV(max) <2.5 (n=36), the sensitivity, specificity, and accuracy of using an SUV(max) of 2.5 or more as a criterion for malignancy on the delayed image acquisition (180 min), was 36, 96, and 78% respectively. However, if an RI of >10% was used as a criterion for malignancy between the initial and delayed images, the sensitivity, specificity, and accuracy was 73, 80, and 78%, respectively. These results are similar to a recent paper, where image acquisition occurred at 60 and 120 min post-tracer injection. CONCLUSION Dual time point FDG PET imaging with RI analysis, is a useful technique in evaluating SPN with an initial SUV(max) <2.5. Prolonging second image acquisition from 120 to 180 min does not appear to improve the accuracy of this technique. However, given that maximal FDG uptake by lung carcinomas is thought to be in the region of 5h, it may be that improving the accuracy of dual time point FDG PET imaging requires a more significant delay in second image acquisition in this specific subgroup.
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Hooper C, Hall D, Virgo P, White P, Darby M, Hall T, Braybrooke J, Searle J, Lyburn I, Maskell N. S37 Comparison of dynamic contrast enhanced MRI (DCE-MRI) parameters with integrated PET-CT and serum mesothelin in the baseline assessment of malignant pleural mesothelioma. Thorax 2010. [DOI: 10.1136/thx.2010.150912.37] [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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Laurence NJ, Searle J, Bristol J, Lyburn ID. Current clinical use of the [18F]FDG PET/CT in breast cancer patients: an audit of local referral patterns. Breast Cancer Res 2010. [PMCID: PMC2978850 DOI: 10.1186/bcr2686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Searle J, Mendelson R, Zelesco M, Sanford J, Cheng W, McKinstry C, Ramsay D. Non-invasive prediction of the degree of liver fibrosis in patients with hepatitis C using an ultrasound contrast agent. A pilot study. J Med Imaging Radiat Oncol 2008; 52:130-3. [PMID: 18373803 DOI: 10.1111/j.1440-1673.2008.01930.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
It has been shown that the severity of hepatic fibrosis in patients with hepatitis C can be predicted non-invasively by measuring intrahepatic circulatory time (IHCT) using a microbubble agent with spectral Doppler analysis. The aim of this study was to assess whether this technique is reproducible using a third-generation microbubble agent and contrast harmonic imaging, which are becoming the standard ultrasound techniques in all radiology departments. Twenty-three untreated patients with hepatitis C, who had undergone a recent liver biopsy, were studied prospectively. Based on their histological fibrosis score, patients were divided into four groups (fibrosis levels 1-4). Contrast harmonic imaging was carried out after an intravenous bolus of a microbubble agent (Optison; Amersham Health, Milwaukee, WI, USA). IHCT was calculated by measuring the difference between the hepatic vein and hepatic artery microbubble arrival times. The IHCT was compared with the degree of fibrosis. Significant differences were shown between the groups for IHCT. There were significant differences between fibrosis levels 1 and 3 and between fibrosis levels 1 and 4. This study has shown that calculation of IHCT using a third-generation microbubble agent and contrast harmonic imaging can differentiate mild fibrosis from more severe degrees of fibrosis in patients with hepatitis C.
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Affiliation(s)
- J Searle
- Department of Radiology, Cheltenham General Hospital, Cheltenham, UK
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Ambrose E, Ruff L, Searle J, Bhasin N, Homer-Vanniasinkam S. An unusual cause of abdominal pain. Assoc Med J 2007. [DOI: 10.1136/sbmj.070118] [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: 11/03/2022]
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Affiliation(s)
- J Searle
- Peninsula Medical School, Posgraduate Medical Centre, Exeter, UK
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Abstract
In the evidence-based medicine stakes, obstetrics has risen from being the holder of the "wooden spoon" to being a world leader in the pursuit of best evidence and the use of formal systematic reviews. A prime example of evidence-based obstetric practice is the use of corticosteroids to reduce respiratory distress syndrome in preterm infants. However, in other areas, such as the rising caesarean section rates, providing best evidence to guide practice has proven difficult. The availability of evidence has not always resulted in changed clinical practice and improved patient care. Researchers in Australia are now examining strategies to maximise dissemination of available best evidence into obstetric practice. Without reflective practice and effective dissemination of evidence, the present litigation phobia surrounding obstetric care could lead to evidence-based medicine being replaced by "nervousness-based medicine".
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Affiliation(s)
- J Searle
- Department of Obstetrics, Gynaecology and Reproductive Medicine, Flinders Medical Centre, Adelaide, SA.
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Abstract
Hyperplastic polyposis is a loosely defined syndrome initially thought not to confer a clinically important predisposition to colorectal cancer. The aim of the current study was to examine the clinical, histologic, and molecular features of a prospective series of cases meeting a strict definition of the condition. Twelve patients were identified, seven of whom had developed colorectal cancer. Most polyps were hyperplastic, but 11 patients also had polyps containing dysplasia as either serrated adenomas. mixed polyps, or traditional adenomas. The mean percentage of dysplastic polyps in patients with cancer was 35%, and in patients without cancer, 11% (p < 0.05). Microsatellite instability (MSI) was present in 3 of 47 hyperplastic polyps and two of eight serrated adenomas. Kras was mutated in 8 of 47 hyperplastic polyps and two of eight serrated adenomas. No polyps showed loss of heterozygosity of chromosomes 5q, 1p, or 18q. Two of seven cancers showed a high level of MSI. It is concluded that hyperplastic polyposis is associated with a high risk of colorectal cancer. Hyperplastic polyps are the dominant type of polyp, but most cases have some dysplastic epithelium. A higher proportion of dysplastic polyps is associated with increased cancer risk. Clonal genetic changes are observed in some hyperplastic polyps and serrated adenomas.
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Affiliation(s)
- B A Leggett
- Conjoint Gastroenterology Research Laboratory, Royal Brisbane Hospital Research Foundation Clinical Research Center, Australia
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Affiliation(s)
- J Searle
- Department of Obstetrics, Gynaecology and Reproductive Medicine, Flinders University of South Australia, Flinders Medical Centre, Bedford Park, South Australia, Australia
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Möckel M, Heller G, Müller C, Klefisch FR, Riehle M, Searle J, Frei U, Störk T. [C-reactive protein as an independent marker of prognosis in acute coronary syndrome: comparison with troponin T]. Z Kardiol 2000; 89:658-66. [PMID: 11013970 DOI: 10.1007/s003920070193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND It has been suggested that inflammatory processes play a role in the pathogenesis of acute coronary syndromes (ACS). C-reactive protein (CRP) is a classic acute phase protein. It is yet unclear whether, in addition to established markers as troponin T (TnT), determination of CRP in patients admitted for ACS contributes significantly to the diagnosis and prognosis of ACS. PATIENTS AND METHODS We investigated 50 patients with ACS (59.4 SD 13.9 years) in the first hour after admission and 4-24 h later with respect to TnT (Elecsys, Roche Diagnostics) and CRP (biokit, modified Quantex CRP plus, analytical sensitivity 0.02 mg/dL). Fifty percent of the patients were classified as having unstable angina retrospectively. All patients were followed in the 6 weeks post discharge regarding death and recurrent ACS. RESULTS The cumulative event rate at 6 weeks after discharge was 62.5% for patients being CRP and TnT positive compared to 35.3% in TnT positive and CRP negative patients. In TnT negative patients a positive CRP test predicted 33.3% of events and 28.8% of patients negative for CRP and TnT had events at 42 days post discharge. Logistic regression analysis regarding the primary endpoint including TnT and CRP (4-24 h values), age, gender and diagnosis resulted in independent prediction of ACS or death by TnT (cutoff 0.1 microgram/L, p = 0.048, odds ratio = 7.5) and CRP (cutoff 0.862 mg/dL, p = 0.026, odds ratio = 5.3). Sensitivity/specificity for AMI diagnosis were 69.6%/75% for TnT and 12%/72% for CRP in the first hour and 91.3%/68.2% for TnT and 68%/72% for CRP 4-24 h later. CONCLUSIONS Besides TnT, high sensitivity CRP determination has no additional value for early AMI diagnosis. The prognosis of these patients during the first 24 hours is significantly and independently predicted by CRP measurements in addition to troponin T.
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Affiliation(s)
- M Möckel
- Medizinische Klinik mit Schwerpunkt Nephrologie und Internistische Intensivmedizin, Universitätsklinikum Charité, Medizinische Fakultät der Humboldt-Universität, Berlin
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Ruhnke M, Eichenauer E, Searle J, Lippek F. Fulminant tracheobronchial and pulmonary aspergillosis complicating imported Plasmodium falciparum malaria in an apparently immunocompetent woman. Clin Infect Dis 2000; 30:938-40. [PMID: 10880305 DOI: 10.1086/313819] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [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: 11/03/2022] Open
Abstract
We describe an unusual case of fulminant tracheobronchial and pulmonary aspergillosis presenting as acute respiratory distress syndrome. The patient, who was apparently immunocompetent, was admitted with severe Plasmodium falciparum malaria but died from aspergillosis.
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Affiliation(s)
- M Ruhnke
- Department of Medicine, Division of Hematology and Oncology, Charité Campus Virchow Klinikum, 13353 Berlin, Germany.
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Abstract
CONTEXT The responsibility to determine just who is competent to practice medicine, and at what standard, is great. Whilst there is still a period available for potential remediation, examinations at the completion of year three of the four-year Graduate Entry Medical Programme (GEMP) at Flinders University of South Australia (FUSA) are high stakes and contain the majority of final summative assessment for the certification of student to doctor. Therefore, the medical school has recently examined its methods for certification, the clinical practice standards sought in its programme and how to determine these standards. DESIGN For all assessments a standard was documented and methods employed to set these standards using specific measures of performance. A modification of the Angoff method was applied to the written examination and the Rothman method, using two criteria, was used to determine competency in the objective structured clinical examination (OSCE). These methods were used for the first time in 1998. Both methods used trained 'experts' as standard setters and both methods used the notion of the 'borderline candidate' to determine the passing standard. This paper describes these two criterion-referenced standard-setting procedures as used in this school and related examination performance. CONCLUSIONS Whilst the use of standard-setting procedures goes part way to defining and measuring competence, it is time consuming and requires significant examiner training and acceptance. Using 50% to determine who is and isn't competent is simpler but not transparent, fair nor defensible.
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Affiliation(s)
- J Searle
- Department of Obstetrics, Gynaecology and Reproductive Medicine, Flinders University of South Australia, Australia
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Jass JR, Biden KG, Cummings MC, Simms LA, Walsh M, Schoch E, Meltzer SJ, Wright C, Searle J, Young J, Leggett BA. Characterisation of a subtype of colorectal cancer combining features of the suppressor and mild mutator pathways. J Clin Pathol 1999; 52:455-60. [PMID: 10562815 PMCID: PMC501434 DOI: 10.1136/jcp.52.6.455] [Citation(s) in RCA: 175] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND 10% of sporadic colorectal cancers are characterised by a low level of microsatellite instability (MSI-L). These are not thought to differ substantially from microsatelite-stable (MSS) cancers, but MSI-L and MSS cancers are distinguished clinicopathologically and in their spectrum of genetic alterations from cancers showing high level microsatellite instability (MSI-H). AIMS To study the distribution of molecular alterations in a series of colorectal cancers stratified by DNA microsatellite instability. METHODS A subset of an unselected series of colorectal cancers was grouped by the finding of DNA MSI at 0 loci (MSS) (n = 51), 1-2 loci (MSI-L) (n = 38) and 3-6 loci (MSI-H) (n = 25). The frequency of K-ras mutation, loss of heterozygosity (LOH) at 5q, 17p and 18q, and patterns of p53 and beta catenin immunohistochemistry was determined in the three groups. RESULTS MSI-H cancers had a low frequency of K-ras mutation (7%), LOH on chromosomes 5q (0%), 17p (0%) and 18q (12.5%), and a normal pattern of immunostaining for p53 and beta catenin. MSI-L cancers differed from MSS cancers in terms of a higher frequency of K-ras mutation (54% v 27%) (p = 0.01) and lower frequency of 5q LOH (23% v 48%) (p = 0.047). Whereas aberrant beta catenin expression and 5q LOH were concordant (both present or both absent) in 57% of MSS cancers, concordance was observed in only 20% of MSI-L cancers (p = 0.01). CONCLUSIONS MSI-L colorectal cancers are distinct from both MSI-H and MSS cancers. This subset combines features of the suppressor and mutator pathways, may be more dependent on K-ras than on the APC gene in the early stages of neoplastic evolution, and a proportion may be related histogenetically to the serrated (hyperplastic) polyp.
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Affiliation(s)
- J R Jass
- Department of Pathology, University of Queensland Medical School, Herston, Australia.
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Biden KG, Simms LA, Cummings M, Buttenshaw R, Schoch E, Searle J, Gobe G, Jass JR, Meltzer SJ, Leggett BA, Young J. Expression of Bcl-2 protein is decreased in colorectal adenocarcinomas with microsatellite instability. Oncogene 1999; 18:1245-9. [PMID: 10022131 DOI: 10.1038/sj.onc.1202413] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Bcl-2 is known to inhibit apoptosis and is thought to play a role in colorectal tumour development. Studies of the promoter region of bcl-2 have indicated the presence of a p53 responsive element which downregulates bcl-2 expression. Since p53 is commonly mutated in colorectal cancers, but rarely in those tumours showing microsatellite instability (MSI), the aim of this study was to examine the relationship of bcl-2 protein expression to MSI, as well as to other clinicopathological and molecular variables, in colorectal adenocarcinomas. Expression of bcl-2 was analysed by immunohistochemistry in 71 colorectal cancers which had been previously assigned to three classes depending upon their levels of MSI. MSI-high tumours demonstrated instability in three or more of six microsatellite markers tested, MSI-low tumours in one or two of six, and MSI-null in none of six. Bcl-2 expression in tumours was quantified independently by two pathologists and assigned to one of five categories, with respect to the number of cells which showed positive staining: 0, up to 5%; 1, 6-25%; 2, 26-50%; 3, 51-75%; and 4, > or =76%. Bcl-2 negative tumours were defined as those with a score of 0. Bcl-2 protein expression was tested for association with clinicopathological stage, differentiation level, tumour site, age, sex, survival, evidence of p53 inactivation and MSI level. A significant association was found between bcl-2 expression and patient survival (P = 0.012, Gehan Wilcoxon test). Further, a significant reciprocal relationship was found between bcl-2 expression and the presence of MSI (P = 0.012, Wilcoxon rank sum test). We conclude that bcl-2 expressing colorectal cancers are more likely to be MSI-null, and to be associated with improved patient survival.
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Affiliation(s)
- K G Biden
- Conjoint Gastroenterology Laboratory, Royal Brisbane Hospital Foundation Clinical Research Centre, Australia
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Affiliation(s)
- J Searle
- Flinders Medical Centre, Bedford Park, South Australia
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Abstract
BACKGROUND Up to 15% of colorectal cancers are characterised by DNA microsatellite instability (MIN), shown by the presence of DNA replication errors (RERs). AIMS To identify pathological features that are discriminating for colorectal cancer (CRC) showing extensive MIN. SUBJECTS A prospective series of 303 patients with CRC and no family history of either familial adenomatous polyposis or hereditary non-polyposis colorectal cancer. METHODS DNA was extracted from fresh tissue samples and the presence of MIN was studied at nine loci that included TGF beta RII, IGFIIR, and BAX. The 61 cases showing RERs were compared with 63 RER negative cases with respect to a comprehensive set of clinical and pathological variables. Predictive utility of the variables was tested by decision tree analysis. RESULTS Twenty seven patients with CRC showed extensive RERs (three loci or more) (RER+) and 34 had limited RERs only (28 = one locus; 6 = two loci) (RER+/-), yielding a bimodal distribution. RER+ cancers differed from RER- and RER+/-) cases. Tumour type (adenocarcinoma, mucinous carcinoma, and undifferentiated carcinoma) (p = 0.001), tumour infiltrating lymphocytes (p = 0.001), and anatomical site (p = 0.001) were the most significant of the discriminating variables. Algorithms developed by decision tree analysis allowed cases to be assigned to RER+ versus RER- and +/- status with a global sensitivity of 81.5%, specificity of 96%, and overall accuracy of 93%. CONCLUSIONS Pathological examination of CRC allows assignment of RER+ status; assignment is specific and relatively sensitive. Conversely RER- and RER+/- CRC are indistinguishable.
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Affiliation(s)
- J R Jass
- Department of Pathology, University of Queensland, Australia
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Searle J. Deviation of the path of a sliding object due to road camber. Sci Justice 1998; 38:45-7. [PMID: 9624813 DOI: 10.1016/s1355-0306(98)72072-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
After a road accident, slide marks are sometimes seen to exhibit a slight curvature, which is often due to road camber. The lateral deviation from that cause is shown to be the length of the slide multiplied by the lateral gradient and divided by twice the friction coefficient.
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Abstract
Traditional epidemiological criteria are inadequate for comprehensively evaluating screening activities to identify best practice. In 1995, a study of women in the postnatal period at a major metropolitan teaching hospital in Victoria was conducted to assess, through their perspectives, the role of other factors of significance for the evaluation of routine antenatal screening. In particular, the role of informed choice was examined. The study involved a survey of 376 women and 21 semistructured interviews. The study found that, with an 'opt-out' or routine system of screening, high rates of use were achieved at the expense of informed choice for some participants. In addition, disturbing differences in information delivery and information perception were found between public and private patients. The need for new criteria to identify what constitutes best practice in the delivery of antenatal screening programs is discussed. These criteria should incorporate consideration of broader social and ethical implications for women receiving antenatal screening.
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Affiliation(s)
- J Searle
- Department of Obstetrics and Gynaecology, Flinders University of South Australia, Adelaide
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Leggett BA, Cornwell M, Thomas LR, Buttenshaw RL, Searle J, Young J, Ward M. Characteristics of metachronous colorectal carcinoma occurring despite colonoscopic surveillance. Dis Colon Rectum 1997; 40:603-8. [PMID: 9152192 DOI: 10.1007/bf02055387] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [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: 02/08/2023]
Abstract
PURPOSE Metachronous colorectal cancer still occurs in a small percentage of patients, despite colonoscopic surveillance. Cancers in hereditary nonpolyposis colorectal cancer for which there is a high risk of metachronous cancer show distinctive DNA changes termed replication errors (RER+). Ten to 20 percent of sporadic colorectal cancers are also RER+. The aim of this study was to identify factors predictive of metachronous colorectal cancer, despite colonoscopic surveillance. Clinicopathologic characteristics and RER status of cancers were examined. METHODS Colorectal cancer patients, who entered into a surveillance program of being examined with colonoscopy within six months of surgery and then at intervals of three years thereafter, were reviewed. The 433 patients compliant with the protocol who had had more than one colonoscopy had been followed up for a mean of 3.8 +/- 2.2 years. DNA was extracted from archival paraffin-embedded cancer tissue for determination of RER status. RESULTS Ten cases of metachronous cancer were identified, giving a rate of 0.61 percent per year. The site of the index cancer in patients who later developed metachronous cancer was predominantly proximal (P = 0.0007), and these cancers were more likely to have mucinous histology (P < 0.0005). Three of 10 (30 percent) index cancers were RER+, which was not significantly different from unselected series of control colorectal cancers in which 20 of 108 (18.5 percent) were RER+. DISCUSSION This study documents the rate of metachronous cancer among patients compliant with a defined colonoscopic screening program and suggests that the risk is highest in patients with a proximal mucinous cancer. RER status does not appear to be a very strong predictive factor, and this study does not support its use as a guide to the frequency of surveillance colonoscopy. More data would be required to determine if RER positivity conferred a relative risk of 3.3 or less.
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Affiliation(s)
- B A Leggett
- Glaxo Gastroenterology Research Laboratory, Royal Brisbane Hospital Clinical Research Center, Bancroft Center, Royal Brisbane Hospital, Herston, Australia
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Biden K, Young J, Buttenshaw R, Searle J, Cooksley G, Xu DB, Leggett B. Frequency of mutation and deletion of the tumor suppressor gene CDKN2A (MTS1/p16) in hepatocellular carcinoma from an Australian population. Hepatology 1997; 25:593-7. [PMID: 9049204 DOI: 10.1002/hep.510250317] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [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: 02/03/2023]
Abstract
The tumor suppressor gene CDKN2A (MTS1/p16), located on chromosome 9p21, is inactivated in a variety of tumors including melanomas and tumors of the biliary tract, pancreas, and stomach. The aim of the present study was to determine whether this gene is inactivated in hepatocellular carcinoma (HCC). Twenty-three primary HCCs and four HCC cell lines were examined. Loss of heterozygosity (LOH) analysis was performed using eight polymorphic markers immediately surrounding CDKN2A, and showed a contiguous region of loss, with the two most commonly deleted markers being D9S1604, located between the p16 and p15 genes, at which 7 of 13 informative tumors (54%) showed loss, and D9S171, with 4 of 14 LOH (29%). Exons 1, 2, and 3 of CDKN2A were amplified by polymerase chain reaction to detect homozygous deletions, and single-strand conformation polymorphism (SSCP) analysis was performed to screen for mutations. No homozygous deletions were detected in any sample. SSCP and sequence analysis showed the same nucleotide change at codon 148 in four tumors. This has been reported elsewhere as a polymorphism. One of these four tumors also contained a mutation at codon 119, resulting in the substitution of an acidic amino acid for a basic one. It is concluded that CDKN2A is infrequently deleted or mutated in HCC. The region of allelic loss upstream from CDKN2A might result in inactivation of regulatory sequences important in the expression of this gene; alternatively, a second tumor suppressor gene may be present in the region 9p21-22, proximal to CDKN2A. These possibilities require further investigation.
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Affiliation(s)
- K Biden
- Glaxo Conjoint Gastroenterology Research Laboratory, Royal Brisbane Hospital Research Foundation Clinical Research Centre, Australia
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Abstract
Numerous materials have been used over the years for vocal fold augmentation. Early use of bioreactive compounds, such as paraffin, gave way to relatively inert substances, such as Teflon. More recently biocompatible materials, such as collagen and autologous fat, have gained wider acceptance. Autologous fat, in particular, is an easily obtainable source for potential rehabilitation of scarred, paralytic, and atrophic vocal folds. However, long-term systematic follow-up has been lacking. Since 1991 we at the University of Kansas Center for Voice and Swallowing Disorders have employed autologous fat for vocal fold augmentation, primarily for either paralysis or repair of a volume-deficient vocal fold segment. Twenty-two patients have completed > or = 1 year of follow-up studies, including graded video-laryngostroboscopy, electroglottography, computerized acoustic analysis, and blinded perceptual analysis by two speech-language pathologists. Statistically significant improvement was demonstrated in many parameters tested, frequently improving with time. Although the volume-deficient group had more "normal" values, the paralysis group had greater improvement in many variables using fat injection. We conclude that while autologous fat injections of the vocal fold may have long-term benefits, certain technical considerations and criteria of selection of patients are critical for success.
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Affiliation(s)
- G Y Shaw
- Department of Otolaryngology, University of Kansas Medical Center, Kansas City 66160, USA
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Chenevix-Trench G, Kerr J, Hurst T, Shih YC, Purdie D, Bergman L, Friedlander M, Sanderson B, Zournazi A, Coombs T, Leary JA, Crawford E, Shelling AN, Cooke I, Ganesan TS, Searle J, Choi C, Barrett JC, Khoo SK, Ward B. Analysis of loss of heterozygosity and KRAS2 mutations in ovarian neoplasms: clinicopathological correlations. Genes Chromosomes Cancer 1997; 18:75-83. [PMID: 9115967 DOI: 10.1002/(sici)1098-2264(199702)18:2<75::aid-gcc1>3.0.co;2-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [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: 02/04/2023] Open
Abstract
The molecular events that give rise to ovarian epithelial neoplasms are not well understood. In particular, it is not known whether adenocarcinomas arise from benign or low malignant potential (LMP) precursors. We have examined a large series of benign (25) and LMP (31) ovarian tumors for loss of heterozygosity (LOH) at multiple loci on 17 chromosomes. LOH was observed in benign tumors on chromosomes 6 (14%) and 9 (5%) and on the X chromosome (33%) only. LOH on these chromosomes was also detected in a small number of LMP neoplasms, suggesting that these may derive sometimes from benign precursors. In addition, we examined LOH in 93 adenocarcinomas. Analysis of associations between LOH events showed that LOH on chromosomes 5 and 17 (P = 0.0002) and on chromosomes 17 and 18 (P = 0.00007) were associated significantly with each other, which suggests that these may represent cooperative, progressive events. No novel significant associations were identified between LOH events and stage, grade, or histology, which would indicate the existence of genetic heterogeneity in ovarian neoplasms. KRAS2 mutations were detected more often in LMP neoplasms than in malignant tumors (P = 0.004) and were detected more often in Stage I/II malignant tumors than in Stage III/IV malignant tumors (P = 0.033), suggesting that LMP tumors with KRAS2 mutations are unlikely to progress to frank malignancy. Univariate (but not multivariate) survival analysis showed that LOH of chromosomes 11 (P = 0.039) and 17 (P = 0.04) was associated with a significantly worse prognosis. Replication of these novel findings is necessary, and the identification, isolation, and characterization of the critical genes affected by LOH will determine their importance in the pathogenesis of ovarian malignancies.
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Abstract
Whilst pregnancy and childbirth are generally regarded as a joyful and exciting time in a woman's life they are also filled with fear, uncertainty, a feeling of being 'at risk' and anxieties about what the pregnancy and future may hold. In a society where the perinatal and maternal mortality and morbidity rates are low, where do these fears and uncertainties arise from? Why do pregnant women fear the worst? What are the implications of this? A cross-sectional and qualitative study of 376 postnatal women in a major public teaching hospital in Melbourne was undertaken in 1995 to explore women's beliefs and fears about pregnancy and birthing outcomes, through their perceptions and use of routine antenatal screening tests. Through women's perceptions about the value of, and expectations of, routine antenatal screening tests, and their fears during pregnancy, the author explores the 'notion of risk' as perceived by these women.
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Affiliation(s)
- J Searle
- Royal Women's Hospital, Melbourne, Victoria
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Abstract
The barley leaf scald fungus, Rhynchosporium secalis, was transformed to hygromycin-B and phleomycin resistance using the hph gene from E. coli and the ble gene from Streptoalloteichus hindustanus under the control of Aspergillus nidulans promoter and terminator sequences. Plasmid DNA was introduced into fungal protoplasts by PEG/CaCl2 treatment. Transformation frequencies varied from 59 to 493 transformants per 10 microg of DNA and 5 x 10(7) protoplasts. The antibiotic-resistant phenotype appeared to be stable under selective, as well as under non-selective, conditions for several generations. Co-transformation using the E. coli uidA gene under the control of A. nidulans promoter and terminator sequences on a non-selectable plasmid occurred at frequencies of up to 66%.
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Affiliation(s)
- M Rohe
- Department of Biochemistry, Max-Planck-Institut für Züchtungsforschung, Carl-von-Linné-Weg 10, D-50829 Köln
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Abstract
Iron deposition occurs in parenchymal cells of the liver in two major defects in human subjects (i) in primary iron overload (genetic haemochromatosis) and (ii) secondary to anaemias in which erythropolesis is increased (thalassaemia). Transfusional iron overload results in excessive storage primarily in cells of the reticule endothelial system. The storage patterns in these situations are quite characteristic. Excessive iron storage, particularly in parenchymal cells eventually results in fibrosis and cirrhosis. There is no animal model or iron overload which completely mimics genetics haemochromatosis but dietary iron loading with carbonyl iron or ferrocene does produce excessive parenchymal iron stores in the rat. Such models have been used to study iron toxicity and the action of iron chelators in the effective removal of excessive iron stores.
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Affiliation(s)
- J W Halliday
- Queensland Institute of Medical Research, Bancroft Centre, Brisbane, Queensland, Australia
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