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Wright J, Science M, Osman S, Arnold C, Sumaida M, Crowcroft N, Deeks SL, Brown K, Halperin S, Hatchette T, McLachlan E, Campigotto A, Richardson S, Bolotin S. Uptake of pertussis immunization in pregnancy and determinants of vaccination in Toronto, Canada. Vaccine 2023; 41:6895-6898. [PMID: 37845156 DOI: 10.1016/j.vaccine.2023.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 09/29/2023] [Accepted: 10/10/2023] [Indexed: 10/18/2023]
Abstract
INTRODUCTION Pertussis causes significant morbidity and mortality in infants aged <6 months. Maternal pertussis vaccination during pregnancy has been recommended in Canada since 2018 to reduce these negative outcomes. In the absence of routine immunization coverage data, our objective was to evaluate uptake in Toronto, Canada. METHODS We recruited mother-infant pairs at The Hospital for Sick Children, Toronto, between 2018 and 2020. We performed logistic regression to examine associations between demographics and self-reported pertussis vaccination. RESULTS 76/243 mothers (31.3 %) reported receiving pertussis vaccination during their most recent pregnancy. Odds of receiving vaccination more than doubled with each 1-year increase in year of pregnancy (aOR: 2.2; 95 % CI: 1.3, 3.6; p < 0.01) and among those born in Canada as compared to those not (aOR: 2.0; 95 % CI: 1.1, 3.6; p = 0.02) CONCLUSION: Uptake of pertussis vaccination during pregnancy in Ontario has increased in recent years, however coverage remains lower than desirable.
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Affiliation(s)
| | - Michelle Science
- Public Health Ontario, Toronto, Ontario, Canada; Division of Infectious Diseases, Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Paediatrics, University of Toronto, Toronto Canada; Centre for Vaccine Preventable Diseases, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Selma Osman
- Centre for Vaccine Preventable Diseases, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Callum Arnold
- Division of Infectious Diseases, Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Biology, Pennsylvania State University, University Park, PA 16802, USA; Center for Infectious Disease Dynamics, Pennsylvania State University, University Park, PA 16802, USA
| | - Maya Sumaida
- Division of Infectious Diseases, Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Natasha Crowcroft
- Centre for Vaccine Preventable Diseases, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; Center for Infectious Disease Dynamics, Pennsylvania State University, University Park, PA 16802, USA; Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Shelley L Deeks
- Centre for Vaccine Preventable Diseases, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; Community Health and Epidemiology, Dalhousie University
| | - Kevin Brown
- Public Health Ontario, Toronto, Ontario, Canada
| | - Scott Halperin
- Canadian Center for Vaccinology (CCfV), IWK Health Centre, Nova Scotia Health Authority (NSHA), and Dalhousie University, Halifax, Nova Scotia (NS), Canada
| | - Todd Hatchette
- Canadian Center for Vaccinology (CCfV), IWK Health Centre, Nova Scotia Health Authority (NSHA), and Dalhousie University, Halifax, Nova Scotia (NS), Canada
| | - Elizabeth McLachlan
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Aaron Campigotto
- Division of Infectious Diseases, Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto Canada
| | - Susan Richardson
- Division of Infectious Diseases, Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto Canada
| | - Shelly Bolotin
- Public Health Ontario, Toronto, Ontario, Canada; Centre for Vaccine Preventable Diseases, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto Canada.
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Bolotin S, Hughes SL, Savage RD, McLachlan E, Severini A, Arnold C, Richardson S, Crowcroft NS, Deek S, Halperin SA, Brown KA, Hatchette T, Osman S, Gubbay JB, Science M. Maternal varicella antibodies in children aged less than one year: Assessment of antibody decay. PLoS One 2023; 18:e0287765. [PMID: 37948389 PMCID: PMC10637651 DOI: 10.1371/journal.pone.0287765] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 06/13/2023] [Indexed: 11/12/2023] Open
Abstract
OBJECTIVES To investigate maternal antibody levels to varicella in infants <12 months of age in Ontario, Canada. STUDY DESIGN In this study, we included specimens from infants <12 months of age, born at ≥37 weeks gestational age, who had sera collected at The Hospital for Sick Children (Toronto, Canada) between 2014-2016. We tested sera using a glycoprotein-based enzyme-linked immunosorbent assay (gpELISA). We measured varicella susceptibility (antibody concentration <150mIU/mL) and mean varicella antibody concentration, and assessed the probability of susceptibility and concentration between one and 11 months of age using multivariable logistic regression and Poisson regression. RESULTS We found that 32% of 196 included specimens represented infants susceptible to varicella at one month of age, increasing to nearly 80% at three months of age. At six months of age, all infants were susceptible to varicella and the predicted mean varicella antibody concentration declined to 62 mIU/mL (95% confidence interval 40, 84), well below the threshold of protection. CONCLUSIONS We found that varicella maternal antibody levels wane rapidly in infants, leaving most infants susceptible by four months of age. Our findings have implications for the timing of first dose of varicella-containing vaccine, infection control measures, and infant post-exposure prophylaxis recommendations.
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Affiliation(s)
- Shelly Bolotin
- Public Health Ontario, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Centre for Vaccine Preventable Diseases, University of Toronto, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | | | - Rachel D. Savage
- Public Health Ontario, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Elizabeth McLachlan
- National Microbiology Laboratory, Public Health Agency of Canada, Ottawa, Ontario, Canada
- Department of Medical Microbiology, University of Manitoba, Manitoba, Canada
| | - Alberto Severini
- National Microbiology Laboratory, Public Health Agency of Canada, Ottawa, Ontario, Canada
- Department of Medical Microbiology, University of Manitoba, Manitoba, Canada
| | - Callum Arnold
- Division of Infectious Diseases, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Susan Richardson
- Division of Microbiology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Natasha S. Crowcroft
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Centre for Vaccine Preventable Diseases, University of Toronto, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Department of Immunization, Vaccines & Biologicals, World Helath Organization, Geneva, Switzerland
| | - Shelley Deek
- Public Health Ontario, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Scott A. Halperin
- Canadian Center for Vaccinology (CCfV), IWK Health Centre, Nova Scotia Health (NSH), and Dalhousie University, Halifax, Nova Scotia (NS), Canada
| | - Kevin A. Brown
- Public Health Ontario, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Todd Hatchette
- Canadian Center for Vaccinology (CCfV), IWK Health Centre, Nova Scotia Health (NSH), and Dalhousie University, Halifax, Nova Scotia (NS), Canada
| | - Selma Osman
- Public Health Ontario, Toronto, Ontario, Canada
| | - Jonathan B. Gubbay
- Public Health Ontario, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Division of Infectious Diseases, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Michelle Science
- Public Health Ontario, Toronto, Ontario, Canada
- Division of Infectious Diseases, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- Department of Paediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada
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Bolotin S, Osman S, Halperin S, Severini A, Ward BJ, Sadarangani M, Hatchette T, Pebody R, Winter A, De Melker H, Wheeler AR, Brown D, Tunis M, Crowcroft N. Immunity of Canadians and risk of epidemics workshop - Conference report. Vaccine 2023:S0264-410X(23)00834-4. [PMID: 37827968 DOI: 10.1016/j.vaccine.2023.07.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 06/07/2023] [Accepted: 07/10/2023] [Indexed: 10/14/2023]
Abstract
On November 18-19, 2019, the Immunity of Canadians and Risk of Epidemics (iCARE) Network convened a workshop in Toronto, Ontario, Canada. The objectives of the workshop were to raise the profile of sero-epidemiology in Canada, discuss best practice and methodological innovations, and strategize on the future direction of sero-epidemiology work in Canada. In this conference report, we describe the presentations and discussions from the workshop, and comment on the impact of the COVID-19 pandemic on serosurveillance initiatives, both in Canada and abroad.
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Affiliation(s)
- Shelly Bolotin
- Centre for Vaccine Preventable Diseases, University of Toronto, ON, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, ON, Canada; Public Health Ontario, Toronto, ON, Canada.
| | | | - Scott Halperin
- Canadian Center for Vaccinology, Dalhousie University, Halifax, NS, Canada; Departments of Pediatrics and Microbiology & Immunology, Dalhousie University, Halifax, NS, Canada
| | - Alberto Severini
- National Microbiology Laboratory Branch, Public Health Agency of Canada, Winnipeg, MN, Canada; Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Brian J Ward
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Manish Sadarangani
- Vaccine Evaluation Center, BC Children's Hospital Research Institute, Vancouver, BC, Canada; Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Todd Hatchette
- Canadian Center for Vaccinology, Dalhousie University, Halifax, NS, Canada; Department of Pathology and Laboratory Medicine, Nova Scotia Health, Halifax, NS, Canada
| | | | - Amy Winter
- University of Georgia, Athens, GA, United States
| | - Hester De Melker
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Aaron R Wheeler
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada
| | - David Brown
- Virus Reference Department, UK Health Security Agency, London, United Kingdom; Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil
| | - Matthew Tunis
- National Advisory Committee on Immunization Secretariat, Public Health Agency of Canada, Ottawa, Ontario, Canada
| | - Natasha Crowcroft
- Centre for Vaccine Preventable Diseases, University of Toronto, ON, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, ON, Canada
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Lutz CS, Hasan AZ, Bolotin S, Crowcroft NS, Cutts FT, Joh E, Loisate S, Moss WJ, Osman S, Hayford K. Comparison of measles IgG enzyme immunoassays (EIA) versus plaque reduction neutralization test (PRNT) for measuring measles serostatus: a systematic review of head-to-head analyses of measles IgG EIA and PRNT. BMC Infect Dis 2023; 23:367. [PMID: 37259032 PMCID: PMC10231861 DOI: 10.1186/s12879-023-08199-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 03/26/2023] [Indexed: 06/02/2023] Open
Abstract
BACKGROUND As countries move towards or achieve measles elimination status, serosurveillance is an important public health tool. However, a major challenge of serosurveillance is finding a feasible, accurate, cost-effective, and high throughput assay to measure measles antibody concentrations and estimate susceptibility in a population. We conducted a systematic review to assess, characterize, and - to the extent possible - quantify the performance of measles IgG enzyme-linked assays (EIAs) compared to the gold standard, plaque reduction neutralization tests (PRNT). METHODS We followed the PRISMA statement for a systematic literature search and methods for conducting and reporting systematic reviews and meta-analyses recommended by the Cochrane Screening and Diagnostic Tests Methods Group. We identified studies through PubMed and Embase electronic databases and included serologic studies detecting measles virus IgG antibodies among participants of any age from the same source population that reported an index (any EIA or multiple bead-based assays, MBA) and reference test (PRNT) using sera, whole blood, or plasma. Measures of diagnostic accuracy with 95% confidence intervals (CI) were abstracted for each study result, where reported. RESULTS We identified 550 unique publications and identified 36 eligible studies for analysis. We classified studies as high, medium, or low quality; results from high quality studies are reported. Because most high quality studies used the Siemens Enzygnost EIA kit, we generate individual and pooled diagnostic accuracy estimates for this assay separately. Median sensitivity of the Enzygnost EIA was 92.1% [IQR = 82.3, 95.7]; median specificity was 96.9 [93.0, 100.0]. Pooled sensitivity and specificity from studies using the Enzygnost kit were 91.6 (95%CI: 80.7,96.6) and 96.0 (95%CI: 90.9,98.3), respectively. The sensitivity of all other EIA kits across high quality studies ranged from 0% to 98.9% with median (IQR) = 90.6 [86.6, 95.2]; specificity ranged from 58.8% to 100.0% with median (IQR) = 100.0 [88.7, 100.0]. CONCLUSIONS Evidence on the diagnostic accuracy of currently available measles IgG EIAs is variable, insufficient, and may not be fit for purpose for serosurveillance goals. Additional studies evaluating the diagnostic accuracy of measles EIAs, including MBAs, should be conducted among diverse populations and settings (e.g., vaccination status, elimination/endemic status, age groups).
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Affiliation(s)
- Chelsea S Lutz
- Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Alvira Z Hasan
- International Vaccine Access Center, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Shelly Bolotin
- Centre for Vaccine Preventable Diseases, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Public Health Ontario, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Natasha S Crowcroft
- Centre for Vaccine Preventable Diseases, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Department of Immunisation, Vaccines and Biologicals, World Health Organization, Geneva, Switzerland
| | - Felicity T Cutts
- Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, University of London, London, UK
| | - Eugene Joh
- Public Health Ontario, Toronto, ON, Canada
| | - Stacie Loisate
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - William J Moss
- Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- International Vaccine Access Center, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | | | - Kyla Hayford
- Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
- Pfizer Vaccines, Inc., New York City, NY, USA.
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Chang I, Osman S, Bentley R, Mihailidis A, Mak S. BALLISTOCARDIOGRAPHY TO CHARACTERIZE PULMONARY ARTERY PRESSURE IN ADVANCED HEART FAILURE PATIENTS AND HEALTHY ADULTS. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.105] [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: 11/02/2022] Open
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Osman S, Alkhalifa S. Mental Health Impact among Survivors from COVID 19 Pneumonia, Almoosa Hospital Experience. Eur Psychiatry 2022. [PMCID: PMC9567659 DOI: 10.1192/j.eurpsy.2022.1285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction COVID-19 is associated with mental manifestations, Anxiety and depression appear to be common amongst people hospitalized for COVID-19. Objectives evaluate the emotional stress resulting from infection and assess its impact on the mental health of patients who recovered from COVID-19 pneumonia. Methods It is a cross-sectional study, The mental health assessment tool DASS2 (Arabic version) was applied in collecting the data for the study. Demographic characteristics, chronic disease status, COVID 19 pneumonia, oxygen saturation level were recorded at the follow-up visit, soon after the psychiatric evaluation. Psychological distress was assessed An Arabic version of the Depression, Anxiety, and Stress Scale-21 (DASS-21) was used to assess the mental health status. Statistical analysis by (SPSS, version 25). Results 466 patients were consented prior to enrollment in the study, out of the total respondents; (53.2%) were females, anxiety rate was found in (18%), stress in (17%), and depression in (14%) of the patients, significantly elevated blood levels of the inflammatory marker in patients with depression and anxiety, increase in the rates of depression with male gender, increasing age and longer duration of ICU stay respectively, with non-significant p-values. There was also a small increase in the period stayed in ICU among those who developed depression and anxiety. Reduced oxygen saturation in COVID-19 patients with depression was 4 times those with no depression. Conclusions prolonged ICU stays and reduced oxygen saturation was associated with a high rate of depression in patients with COVID-19, as well as elevated levels of the inflammatory marker D-dimer with depression and anxiety. Disclosure No significant relationships.
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Payan N, Murphy R, Jain S, Hounsell A, Osman S, O'Sullivan J, Prise K, McGarry C. PO-1758 Performance assessment of radiogenomics machine learning models for stratifying prostate cancer risk. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03722-7] [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: 11/26/2022]
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Murphy R, Payan N, Osman S, Prise K, Hounsell A, O'Sullivan J, McGarry C, Jain S. PO-1769 Prostate cancer radiogenomics machine learning classification for predicting disease progression. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03733-1] [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: 10/18/2022]
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Perry J, Osman S, Wright J, Richard-Greenblatt M, Buchan SA, Sadarangani M, Bolotin S. Does a humoral correlate of protection exist for SARS-CoV-2? A systematic review. PLoS One 2022; 17:e0266852. [PMID: 35395052 PMCID: PMC8993021 DOI: 10.1371/journal.pone.0266852] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/28/2022] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND A correlate of protection (CoP) is an immunological marker associated with protection against infection. Despite an urgent need, a CoP for SARS-CoV-2 is currently undefined. OBJECTIVES Our objective was to review the evidence for a humoral correlate of protection for SARS-CoV-2, including variants of concern. METHODS We searched OVID MEDLINE, EMBASE, Global Health, Biosis Previews and Scopus to January 4, 2022 and pre-prints (using NIH iSearch COVID-19 portfolio) to December 31, 2021, for studies describing SARS-CoV-2 re-infection or breakthrough infection with associated antibody measures. Two reviewers independently extracted study data and performed quality assessment. RESULTS Twenty-five studies were included in our systematic review. Two studies examined the correlation of antibody levels to VE, and reported values from 48.5% to 94.2%. Similarly, several studies found an inverse relationship between antibody levels and infection incidence, risk, or viral load, suggesting that both humoral immunity and other immune components contribute to protection. However, individual level data suggest infection can still occur in the presence of high levels of antibodies. Two studies estimated a quantitative CoP: for Ancestral SARS-CoV-2, these included 154 (95% confidence interval (CI) 42, 559) anti-S binding antibody units/mL (BAU/mL), and 28.6% (95% CI 19.2, 29.2%) of the mean convalescent antibody level following infection. One study reported a CoP for the Alpha (B.1.1.7) variant of concern of 171 (95% CI 57, 519) BAU/mL. No studies have yet reported an Omicron-specific CoP. CONCLUSIONS Our review suggests that a SARS-CoV-2 CoP is likely relative, where higher antibody levels decrease the risk of infection, but do not eliminate it completely. More work is urgently needed in this area to establish a SARS-CoV-2 CoP and guide policy as the pandemic continues.
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Affiliation(s)
- Julie Perry
- Public Health Ontario, Toronto, Ontario, Canada
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Selma Osman
- Public Health Ontario, Toronto, Ontario, Canada
| | | | | | - Sarah A. Buchan
- Public Health Ontario, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Centre for Vaccine Preventable Diseases, University of Toronto, Toronto, Ontario, Canada
| | - Manish Sadarangani
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
- Vaccine Evaluation Center, BC Children’s Hospital Research Institute, Vancouver, British Columbia, Canada
| | - Shelly Bolotin
- Public Health Ontario, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Centre for Vaccine Preventable Diseases, University of Toronto, Toronto, Ontario, Canada
- Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
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Bolotin S, Tran V, Deeks SL, Peci A, Brown KA, Buchan SA, Ogbulafor K, Ramoutar T, Nguyen M, Thakkar R, DelaCruz R, Mustfa R, Maregmen J, Woods O, Krasna T, Cronin K, Osman S, Joh E, Allen VG. Assessment of population infection with SARS-CoV-2 in Ontario, Canada, March to June 2020. Euro Surveill 2021; 26. [PMID: 34915969 PMCID: PMC8728493 DOI: 10.2807/1560-7917.es.2021.26.50.2001559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Serosurveys for SARS-CoV-2 aim to estimate the proportion of the population that has been infected. Aim This observational study assesses the seroprevalence of SARS-CoV-2 antibodies in Ontario, Canada during the first pandemic wave. Methods Using an orthogonal approach, we tested 8,902 residual specimens from the Public Health Ontario laboratory over three time periods during March–June 2020 and stratified results by age group, sex and region. We adjusted for antibody test sensitivity/specificity and compared with reported PCR-confirmed COVID-19 cases. Results Adjusted seroprevalence was 0.5% (95% confidence interval (CI): 0.1–1.5) from 27 March–30 April, 1.5% (95% CI: 0.7–2.2) from 26–31 May, and 1.1% (95% CI: 0.8–1.3) from 5–30 June 2020. Adjusted estimates were highest in individuals aged ≥ 60 years in March–April (1.3%; 95% CI: 0.2–4.6), in those aged 20–59 years in May (2.1%; 95% CI: 0.8–3.4) and in those aged ≥ 60 years in June (1.6%; 95% CI: 1.1–2.1). Regional seroprevalence varied, and was highest for Toronto in March–April (0.9%; 95% CI: 0.1–3.1), for Toronto in May (3.2%; 95% CI: 1.0–5.3) and for Toronto (1.5%; 95% CI: 0.9–2.1) and Central East in June (1.5%; 95% CI: 1.0–2.0). We estimate that COVID-19 cases detected by PCR in Ontario underestimated SARS-CoV-2 infections by a factor of 4.9. Conclusions Our results indicate low population seroprevalence in Ontario, suggesting that public health measures were effective at limiting the spread of SARS-CoV-2 during the first pandemic wave.
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Affiliation(s)
- Shelly Bolotin
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
| | - Vanessa Tran
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
| | - Shelley L Deeks
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
| | | | - Kevin A Brown
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
| | - Sarah A Buchan
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
| | | | | | | | | | | | - Reem Mustfa
- Public Health Ontario, Toronto, Ontario, Canada
| | | | | | - Ted Krasna
- Public Health Ontario, Toronto, Ontario, Canada
| | - Kirby Cronin
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
- Public Health Ontario, Toronto, Ontario, Canada
| | - Selma Osman
- Public Health Ontario, Toronto, Ontario, Canada
| | - Eugene Joh
- Public Health Ontario, Toronto, Ontario, Canada
| | - Vanessa G Allen
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Public Health Ontario, Toronto, Ontario, Canada
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Hashmi Y, Sahu MA, Hatt K, Osman S, Bhuiyan ZA, Ahmed U. 511 Organising A Surgical Conference During The COVID-19 Pandemic – Is It ‘Virtually’ The Same? Br J Surg 2021. [PMCID: PMC8524557 DOI: 10.1093/bjs/znab259.855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Introduction Surgical conferences are invaluable events for healthcare professionals; they provide opportunities to engage with upcoming scientific discoveries, network professionally with peers as well as expand learning through lectures and workshops. For medical students, conferences provide an opportunity to expand understanding beyond the undergraduate curriculum in an interactive manner. COVID-19 has caused disruption to the organisation and attendance of in-person conferences (IPCs). Virtual conferences (VCs) offer a viable solution, allowing delegates to attend from the comfort of their own homes. Method The aim of our study was to evaluate an organised VC and explore the perceived benefits and limitations of VCs compared to IPCs. A virtual one-day trauma & orthopaedics (T&O) conference was organised involving lectures, workshops, poster, and oral presentations. Anonymous questionnaire forms were distributed to delegates following the conference to assess the aims of our paper. Results From 106 responses, 96.2% rated the conference as ‘Excellent’ or ‘Good’ with 92.5% stating that it increased their passion for T&O surgery. Based on a five-point Likert scale (5= strongly agree, 1= strongly disagree), mean score of agreement for preferring VCs to IPCs was 3.30(± 1.24). Key advantages of the VC were a lower cost (70.8%) and not having to travel (77.4%), whereas the main limitation was the inability to participate in hands-on workshops (84.9%). Conclusions Despite the success of our VC, delegate feedback indicates a mixed response comparing VCs to IPCs. We share our findings to encourage similar events to be organised and for other specialties.
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Affiliation(s)
- Y Hashmi
- University of Birmingham, Birmingham, United Kingdom
| | - M A Sahu
- University of Birmingham, Birmingham, United Kingdom
| | - K Hatt
- University of Birmingham, Birmingham, United Kingdom
| | - S Osman
- University of Birmingham, Birmingham, United Kingdom
| | - Z A Bhuiyan
- University of Birmingham, Birmingham, United Kingdom
| | - U Ahmed
- Princess Royal Hospital, Telford, United Kingdom
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12
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Osman S, Girdharry N, Bentley R, Granton J, de Perrot M, Mak S. EXERCISE HEMODYNAMICS TO REVEAL LATENT PULMONARY VASCULAR ABNORMALITIES AMONG CHRONIC THROMBOEMBOLIC DISEASE PATIENTS. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.216] [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] Open
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13
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Lynch S, Varasteh M, Russell E, Harney J, Conkey D, Cole A, Osman S, Flannery T, Prise K, O’Neill A, McGarry C. PO-1031 Tumour volume influences local control and overall survival following Stereotactic Radiosurgery. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07482-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: 11/26/2022]
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14
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Bolotin S, Tran V, Osman S, Brown KA, Buchan SA, Joh E, Deeks SL, Allen VG. SARS-CoV-2 Seroprevalence Survey Estimates Are Affected by Anti-Nucleocapsid Antibody Decline. J Infect Dis 2021; 223:1334-1338. [PMID: 33400794 PMCID: PMC7928877 DOI: 10.1093/infdis/jiaa796] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 01/04/2021] [Indexed: 02/02/2023] Open
Abstract
We analyzed 21 676 residual specimens from Ontario, Canada collected March-August 2020 to investigate the effect of antibody decline on SARS-CoV-2 seroprevalence estimates. Testing specimens orthogonally using Abbott (anti-nucleocapsid) and Ortho (anti-spike) assays, seroprevalence estimates were 0.4%-1.4%, despite ongoing disease activity. The geometric mean concentration (GMC) of antibody-positive specimens decreased over time (P = .015), and GMC of antibody-negative specimens increased over time (P = .0018). Association between the 2 tests decreased each month (P < .001), suggesting anti-nucleocapsid antibody decline. Lowering Abbott antibody index cutoff from 1.4 to 0.7 resulted in a 16% increase in positive specimens.
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Affiliation(s)
- Shelly Bolotin
- Public Health Ontario, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Vanessa Tran
- Public Health Ontario, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Selma Osman
- Public Health Ontario, Toronto, Ontario, Canada
| | - Kevin A Brown
- Public Health Ontario, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Sarah A Buchan
- Public Health Ontario, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Eugene Joh
- Public Health Ontario, Toronto, Ontario, Canada
| | - Shelley L Deeks
- Public Health Ontario, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Vanessa G Allen
- Public Health Ontario, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
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15
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Hussain S, Osman S, Osheiba M, Choy CH, Mortimer N, Ludman P, Townend J, Nadir A, Doshi S, George S, Zaphiriou A, Khan SQ. The effect of the COVID-19 pandemic on time to angiography and outcomes in patients presenting with non-ST elevation myocardial infarction. European Heart Journal. Acute Cardiovascular Care 2021. [PMCID: PMC8135338 DOI: 10.1093/ehjacc/zuab020.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Funding Acknowledgements Type of funding sources: None. Background Covid-19 pandemic has had a profound impact on healthcare service delivery. Acute cardiovascular care however remains a priority despite the pandemic. Patients presenting with non-ST elevation MI (NSTEMI) have been poorly characterised during the pandemic. Methods We conducted a retrospective study of patients diagnosed with NSTEMI during the peak of the pandemic between April-May 2020 at our tertiary centre in the UK. Data was collected from electronic patient clinical records including time from admission to angiography, length of stay, mortality, prescription of secondary prevention pharmacotherapy and referral to cardiac rehabilitation. We compared this data to the same time period in 2019. Results As can be seen from Table 1, in 2020, the mean age, median time to angiography and length of stay were all significantly lower than the control period of 2019. Prescription of secondary prevention medication (Aspirin, P2Y12 inhibitor, Beta-blocker, Statin and ACEi/ARB) and referral to cardiac rehabilitation also improved in 2020, however neither was statistically significant. During the 2020 period, 1 patient died due to late presentation NSTEMI and multi-organ failure. There were 3 deaths in 2019: complications following coronary bypass surgery, upper GI bleed and a subarachnoid haemorrhage. Conclusion Our results show that the mean age of the patients presenting with NSTEMI during the peak of Covid-19 pandemic was younger suggesting that elderly patients failed to present. Compared to 2019, there was significant improvement in patient treatment times with a significantly shorter stay in hospital, probably as a result of the reduction in elective activity allowing un-restrained access to the catheter labs. We also saw improvement in prescription for secondary prevention and referral to cardiac rehabilitation services during this time suggesting that there may have been improved focus on these aspects of care again.
Table 1 | 2019 | 2020 | p-value |
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Age (years) | 71.2 ± 12.2 | 65.0 ± 12.1 | p < 0.01 | Number of NSTEMI patients | 56 | 59 | p = NS | Number of NSTEMI patients undergoing angiography | 50 | 53 | p = NS | Median time to angiography (hours) | 68.6 | 14 | p < 0.01 | Median length of stay (days) | 5 (IQR 2:8) | 2 (IQR 1:4) | p < 0.01 | Referral to cardiac rehabilitation | 77.4% | 84.5% | p = NS | Prescription of secondary prevention medication | 69.8% | 72.4% | p = NS |
Table 1- Comparison of NSTEMI patients in 2019 and 2020 Abstract Figure. Box and whisker plot for hospital stay ![]()
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Affiliation(s)
- S Hussain
- University of Birmingham, Medical School, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - S Osman
- University of Birmingham, Medical School, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - M Osheiba
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - CH Choy
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - N Mortimer
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - P Ludman
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - J Townend
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - A Nadir
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - S Doshi
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - S George
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - A Zaphiriou
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
| | - SQ Khan
- Queen Elizabeth Hospital Birmingham, Department of Cardiology, Birmingham, United Kingdom of Great Britain & Northern Ireland
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Neary E, Jiménez-Vargas NN, Osman S, Reed DE, Vanner S, Lomax AE. A234 EVALUATING THE EFFECT OF STOOL SUPERNATANTS FROM IBS PATIENTS AND HEALTHY CONTROLS ON THE EXCITABILITY OF DRG NEURONS. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Abdominal pain is commonly described in chronic disorders such as irritable bowel syndrome (IBS), but the underlying mechanisms are currently unclear. The stool metabolomic and microbiota profiles of IBS and healthy patients have shown distinct differences. Additionally, IBS stool supernatants have previously been demonstrated to induce hypersensitivity of nociceptive nerves in the ex vivo mouse colon, suggesting that mediators in the stool can sensitize nociceptors. However, the effects of healthy control (HC) or IBS patient stool supernatants on the excitability of DRG neurons have not been clarified.
Aims
To evaluate the effect of HC and IBS supernatant on DRG neurons.
Methods
HC (n=8 patients) or IBS (n=10 patients) stool was collected, dissolved and homogenized with bicarbonate-buffered Krebs solution at 37°C in a 1/10 dilution. DRG neurons from C57BL/6 mice were dissociated and incubated overnight with HC or IBS supernatant in a Krebs dissolution. Changes in DRG neuronal excitability were recorded using perforated patch-clamp techniques to measure the rheobase (amount of current needed to elicit an action potential). The effect of the IBS and HC stool supernatants on the resting membrane potential (RMP) was also recorded.
Results
Overnight incubations with supernatant of HC stool diluted in Krebs solution (n=28 neurons) did not significantly decrease the rheobase compared to control neurons (n=22) (62.7 ± 3.9 pA vs 64.2 ± 2.7 pA). In a parallel experiment, we evaluated the effect of IBS stool supernatants diluted in Krebs (n=52 neurons) and found that they significantly decreased the rheobase compared to the supernatant of HC diluted in Krebs and control neurons (52.3 ± 2.3; p<0.05). The data were analyzed with a one-way ANOVA and Tukey’s test. Incubations with IBS supernatant decreased the RMP compared to HC supernatant (-42.6 ± 0.6 mV vs. -46.0 ± 0.9 mV; p<0.01), which was calculated with an unpaired t-test.
Conclusions
These findings suggest that mediators in IBS stool increase the excitability of DRG neurons compared to HC stool supernatant, and thus may contribute to pain signaling in IBS patients.
Funding Agencies
CIHR
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Affiliation(s)
- E Neary
- Medicine, Queen’s University, Kingston, ON, Canada
| | | | - S Osman
- Medicine, Queen’s University, Kingston, ON, Canada
| | - D E Reed
- Medicine, Queen’s University, Kingston, ON, Canada
| | - S Vanner
- Medicine, Queen’s University, Kingston, ON, Canada
| | - A E Lomax
- Medicine, Queen’s University, Kingston, ON, Canada
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17
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Osman S, Preet R. Dengue, chikungunya and Zika in GeoSentinel surveillance of international travellers: a literature review from 1995 to 2020. J Travel Med 2020; 27:6007546. [PMID: 33258476 DOI: 10.1093/jtm/taaa222] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/19/2022]
Abstract
INTRODUCTION GeoSentinel is a global surveillance network of travel medicine providers seeing ill-returned travellers. Much of our knowledge on health problems and infectious encountered by international travellers has evolved as a result of GeoSentinel surveillance, providing geographic and temporal trends in morbidity among travellers while contributing to improved pre-travel advice. We set out to synthesize epidemiological information, clinical manifestations and time trends for dengue, chikungunya and Zika in travellers as captured by GeoSentinel. METHODS We conducted a systematic literature search in PubMed on international travellers who presented with dengue, chikungunya or Zika virus infections to GeoSentinel sites around the world from 1995 until 2020. RESULTS Of 107 GeoSentinel publications, 42 articles were related to dengue, chikungunya and/or Zika. The final analyses and synthesis of and results presented here are based on the findings from 27 original articles covering the three arboviral diseases. CONCLUSIONS Dengue is the most frequent arboviral disease encountered in travellers presenting to GeoSentinel sites, with increasing trends over the past two decades. In Southeast Asia, annual proportionate morbidity increased from 50 dengue cases per 1000 ill returned travellers in non-epidemic years to an average of 159 cases per 1000 travellers during epidemic years. The highest number of travellers with chikungunya virus infections was reported during the chikungunya outbreak in the Americas and the Caribbean in the years 2013-16. Zika was first reported by GeoSentinel already in 2012, but notifications peaked in the years 2016-17 reflecting the public health emergency in the Americas at the time.
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Affiliation(s)
- S Osman
- Department of Epidemiology and Global Health, Faculty of Medicine, Umeå University, Umeå, 90185, Sweden
| | - R Preet
- Department of Epidemiology and Global Health, Faculty of Medicine, Umeå University, Umeå, 90185, Sweden
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18
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Osman S, Jain S, Hounsell A, Prise K, McGarry C. PO-1574: Robustness of CT-based prostate radiomics features against artefacts from gold fiducial markers. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01592-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Gadelkarim W, Shahper S, Reid J, Wikramanayake M, Kaur S, Kolli S, Fineberg N, Osman S. Obsessive compulsive Personality Disorder and Autism Spectrum Disorder Traits in the Obsessive-compulsive Disorder Clinic. Eur Psychiatry 2020. [DOI: 10.1016/j.eurpsy.2017.01.1959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
IntroductionObsessive Compulsive Personality Disorder (OCPD) is a common, highly co-morbid disorder. Subjected to comparatively little research, OCPD shares aspects of phenomenology and neuropsychology with obsessive-compulsive spectrum disorders and neurodevelopmental disorders such as autism spectrum disorder (ASD). A greater understanding of this interrelationship would provide new insights into its diagnostic classification and generate new research and treatment heuristics.AimsTo investigate the distribution of OCPD traits within a cohort of OCD patients. To evaluate the clinical overlap between traits of OCPD, OCD and ASD, as well as level of insight and treatment resistance.MethodWe interviewed 73 consenting patients from a treatment seeking OCD Specialist Service. We evaluated the severity of OCPD traits (Compulsive Personality Assessment Scale; CPAS), OCD symptoms (Yale–Brown Obsessive Compulsive Scale; Y-BOCS), ASD traits (Adult Autism Spectrum Quotient; AQ) and insight (Brown Assessment of Beliefs Scale; BABS).ResultsOut of 67 patients, 24 (36%) met DSM-IV criteria for OCPD, defined using the CPAS. Using Pearson's test, CPAS scores significantly (P < 0.01) correlated with total AQ and selected AQ domains but not with BABS. Borderline significant correlation was observed with Y-BOCS (P = 0.07). OCPD was not over-represented in a highly resistant OCD subgroup.ConclusionDisabling OCPD traits are common in the OCD clinic. They strongly associate with ASD traits, less strongly with OCD severity and do not appear related to poor insight or highly treatment-resistant OCD. The impact of OCPD on OCD treatment outcomes requires further research.Disclosure of interestThis work did not receive funding from external sources. Over the past few years, Dr. Fineberg has received financial support in various forms from the following: Shire, Otsuka, Lundbeck, Glaxo-SmithKline, Servier, Cephalon, Astra Zeneca, Jazz pharmaceuticals, Bristol Myers Squibb, Novartis, Medical Research Council (UK), National Institute for Health Research (UK), Wellcome Foundation, European College of Neuropsychopharmacology, UK College of Mental Health Pharmacists, British Association for Psychopharmacology, International College of Obsessive-Compulsive Spectrum Disorders, International Society for Behavioural Addiction, World Health Organization, Royal College of Psychiatrists.
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20
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Kamel Abdel Aal A, Osman S, Fayez M, Souid A, Mahmoud K, Abou Elkassem A, Shoreibah M. 3:00 PM Abstract No. 52 Comparison between ultrasound and angiographic findings in patients presenting with recurrent ascites and undergoing transjugular intrahepatic portosystemic shunt revision. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.076] [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: 10/25/2022] Open
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21
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Abdel Aal AK, Osman S, Fayez M, Fadala H, Souid A, Elkassem AA, Li Y, Shoreibah M, Mahmoud K. Abstract No. 519 Safety and efficacy of transarterial chemoembolization using small diameter drug-eluting beads followed by microwave ablation for the treatment of unresectable hepatocellular carcinoma. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.580] [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: 10/25/2022] Open
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22
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Osman S, Lomax AE. A130 RETROGRADE TRACING ANALYSIS OF THE SENSORY INNERVATION OF THE MOUSE COLON. J Can Assoc Gastroenterol 2020. [DOI: 10.1093/jcag/gwz047.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Visceral pain is a primary symptom of many gastrointestinal diseases. One feature of visceral pain is its vague localization. We hypothesized that overlap in the receptive fields of spinal primary afferent neurons that innervate the gut may contribute to this vague localization. Many studies have confirmed that the proximal and distal colon are mainly innervated by spinal afferent neurons with cell bodies in thoraco-lumbar and lumbo-sacral dorsal root ganglia (DRG), respectively. However, no murine studies have examined whether individual DRG neurons simultaneously innervate both proximal and distal colon.
Aims
To determine the extent of overlap in receptive fields of colon-projecting DRG neurons.
Methods
C57BL/6 mice (n=8) were anesthetized, and two retrograde neuronal tracers with distinct fluorescence emission spectra (Fast blue and DiI) were injected separately into the smooth muscle layers of proximal and distal colon. Mice were left for 10–13 days for dye transport, before being euthanized. Thoraco, lumbar and lumbo-sacral DRGs (T8-13, L1-4, L5-S2) were dissected and fixed in 4% paraformaldehyde overnight. 12μm cryostat sections were obtained and analyzed using a fluorescent microscope equipped with filter cubes that detect Fast blue and DiI.
Results
When DiI was injected into the proximal colon, we observed labelling to be highest in T8-13 DRG with 12.6 +/- 4.5% of cell bodies labelled, followed by L1-4 was (8.2 +/- 1.4%) and in L5-S2 (6.5 +/- 0.8%). DiI injections into the distal colon resulted in labelling of similar numbers of neurons labelled in T8-13 and L1-4 ganglia, whereas half as many neurons were labelled in L5-S2 ganglia. This data shows that the majority of spinal afferent innervation of the colon originates in thoracolumbar DRG. Most importantly, 26.4% and 17.6% of thoracolumbar and lumbo-sacral DRG neurons labelled by Fast blue injection into the proximal colon were also double-labelled by DiI injected into the distal colon. Similarly, 16.6% and 13.8% of neurons in thoracolumbar and lumbosacral DRG labelled by Fast blue injection into the distal colon were double-labelled by DiI injected into the proximal colon.
Conclusions
These data reveal a surprisingly large number of DRG neurons that innervate the colon have receptive fields that cover both the proximal and distal colon, which may contribute to the poor spatial localization of pain emanating from the colon.
Funding Agencies
CCC, CIHR
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Affiliation(s)
- S Osman
- Neuroscience, Queen’s University, Kingston, ON, Canada
| | - A E Lomax
- Queen’s University, Kingston, ON, Canada
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23
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Osman S, Ab. Rahman S, Jalil A. Issues in halal food product labelling: a conceptual paper. Food Res 2020. [DOI: 10.26656/fr.2017.4(s1).s15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The paper was aimed to uncover the issues encountered on Halal Food Product labelling
to prevent the misuse of Islamic attributes in food products labelling and to ensure the
appropriate trademarks, terms, and label used on the packaging and marketing strategy.
The method used for this conceptual paper was from literature reviews from journal
articles, thesis, proceedings and conferences, books, and online news, which are related to
the keywords and research area. Trademarks and labels are among the crucial elements in
marketing, which enable the consumer to differentiate the quality, the ingredients and will
affect the consumers’ buying choice. Recently there is a trend of using Islamic attributes
in food product labelling as trademarks to attract Muslim consumers. The issues
encountered on halal food product labelling are the use of Quranic verses on the drink, the
term “Sunnah food”, using Islamic terms such as “Masjid”, “Mukmin”, and others in food
products’ trademark and label. The consumers were deceived into thinking that these
products have extra benefits as compared to others due to Islamic attributes they have.
Thus, there is a need for an in-depth study on these issues since there is no clear and
specific guideline on this matter.
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Gadelkarim W, Shahper S, Reid J, Wikramanayake M, Kaur S, Kolli S, Osman S, Fineberg NA. Overlap of obsessive-compulsive personality disorder and autism spectrum disorder traits among OCD outpatients: an exploratory study. Int J Psychiatry Clin Pract 2019; 23:297-306. [PMID: 31375037 DOI: 10.1080/13651501.2019.1638939] [Citation(s) in RCA: 9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background: Whereas the phenomenology of obsessive-compulsive personality disorder (OCPD) shows similarities to that of obsessive compulsive and related disorders (OCRDs) as well as with autism spectrum disorder (ASD), the relationship between these disorders is poorly understood.Aims: Within a clinical sample, we aimed to investigate the distribution of OCD, OCPD and ASD symptoms and traits and their interrelationship, as well as to evaluate insight and treatment refractoriness.Methods: Consecutive adult OCD outpatients were assessed for OCPD traits (Compulsive Personality Assessment Scale (CPAS)), OCD symptoms (Yale-Brown Obsessive Compulsive Scale (Y-BOCS)), ASD traits (Autism Spectrum Quotient (AQ)), insight (Brown Assessment of Beliefs Scale (BABS)) and treatment resistance (clinical records). Those scoring highly on the AQ underwent a diagnostic interview for ASD.Results: Sixty-seven consenting individuals completed the CPAS, BABS and AQ, and 65 completed the Y-BOCS. Twenty-four patients (35.8%) were diagnosed with OCPD. Patients with OCPD were less likely to be employed (p=.04). They demonstrated elevated AQ scores (p=.004) and rates of ASD diagnosis (54.2%) (p <.001). OCPD traits (CPAS) showed a highly significant correlation with ASD traits (AQ) (p<.001), and no association with Y-BOCS, BABS or treatment resistance.Conclusions: In an OCD cohort limited by small size, OCPD associated strongly with unemployment and ASD, with implications for diagnosis, treatment and outcome.KEY POINTSClinicians should exercise a high level of vigilance for OCPD and ASD in patients presenting with obsessive compulsive symptoms.The presence of OCPD may indicate a likelihood of disabling ASD traits, including cognitive inflexibility, poor central coherence and poor social communication.These neuropsychological factors may require separate clinical intervention strategies.
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Affiliation(s)
- W Gadelkarim
- Rosanne House, Hertfordshire Partnership University NHS Foundation Trust, Welwyn Garden City, UK.,Derwent Centre, Essex Partnership University NHS Foundation Trust, Harlow, UK
| | - S Shahper
- Department of Life and Medical Science, University of Hertfordshire, Hatfield, UK
| | - J Reid
- Highly Specialised OCD/BDD Services, Hertfordshire Partnership University NHS Foundation Trust, Welwyn Garden City, UK
| | - M Wikramanayake
- Cavell Centre, Cambridgeshire and Peterborough NHS Foundation Trust, Peterborough, UK
| | - S Kaur
- Highly Specialised OCD/BDD Services, Hertfordshire Partnership University NHS Foundation Trust, Welwyn Garden City, UK
| | - S Kolli
- East London NHS Foundation Trust, Bedford, UK
| | - S Osman
- Northumberland, Tyne and Wear NHS Foundation Trust, Newcastle, UK
| | - N A Fineberg
- Highly Specialised OCD/BDD Services, Hertfordshire Partnership University NHS Foundation Trust, Welwyn Garden City, UK.,Postgraduate Medical School, University of Hertfordshire, Hatfield, UK.,University of Cambridge, School of Clinical Medicine, Cambridge, UK
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Osman S, Leijenaar R, Cole A, Hounsell A, Prise K, O'Sullivan J, Lambin P, McGarry C, Jain S. OC-0407 CT-based Radiomics for Risk Stratification in Prostate Cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30827-8] [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: 10/26/2022]
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26
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Osman S, Russell E, King R, Cole A, McGrath C, Jain S, Hounsell A, Prise K, McGarry C. PO-0968 Prostate-specific phantom for radiomic features quality assurance. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31388-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: 11/28/2022]
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Crowther K, Osman S, O'Hare S, Gray S, Holland D, Vennard H, Hanna G. OC-0098 Gated vs coached DIBH treatment in left sided breast cancer radiotherapy: a single centre study. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30518-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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McLean K, Glasbey J, Borakati A, Brooks T, Chang H, Choi S, Goodson R, Nielsen M, Pronin S, Salloum N, Sewart E, Vanniasegaram D, Drake T, Gillies M, Harrison E, Chapman S, Khatri C, Kong C, Claireaux H, Bath M, Mohan M, McNamee L, Kelly M, Mitchell H, Fitzgerald J, Bhangu A, Nepogodiev D, Antoniou I, Dean R, Davies N, Trecarten S, Henderson I, Holmes C, Wylie J, Shuttleworth R, Jindal A, Hughes F, Gouda P, Fleck R, Hanrahan M, Karunakaran P, Chen J, Sykes M, Sethi R, Suresh S, Patel P, Patel M, Varma R, Mushtaq J, Gundogan B, Bolton W, Khan T, Burke J, Morley R, Favero N, Adams R, Thirumal V, Kennedy E, Ong K, Tan Y, Gabriel J, Bakhsh A, Low J, Yener A, Paraoan V, Preece R, Tilston T, Cumber E, Dean S, Ross T, McCance E, Amin H, Satterthwaite L, Clement K, Gratton R, Mills E, Chiu S, Hung G, Rafiq N, Hayes J, Robertson K, Dynes K, Huang H, Assadullah S, Duncumb J, Moon R, Poo S, Mehta J, Joshi K, Callan R, Norris J, Chilvers N, Keevil H, Jull P, Mallick S, Elf D, Carr L, Player C, Barton E, Martin A, Ratu S, Roberts E, Phan P, Dyal A, Rogers J, Henson A, Reid N, Burke D, Culleton G, Lynne S, Mansoor S, Brennan C, Blessed R, Holloway C, Hill A, Goldsmith T, Mackin S, Kim S, Woin E, Brent G, Coffin J, Ziff O, Momoh Z, Debenham R, Ahmed M, Yong C, Wan J, Copley H, Raut P, Chaudhry F, Nixon G, Dorman C, Tan R, Kanabar S, Canning N, Dolaghan M, Bell N, McMenamin M, Chhabra A, Duke K, Turner L, Patel T, Chew L, Mirza M, Lunawat S, Oremule B, Ward N, Khan M, Tan E, Maclennan D, McGregor R, Chisholm E, Griffin E, Bell L, Hughes B, Davies J, Haq H, Ahmed H, Ungcharoen N, Whacha C, Thethi R, Markham R, Lee A, Batt E, Bullock N, Francescon C, Davies J, Shafiq N, Zhao J, Vivekanantham S, Barai I, Allen J, Marshall D, McIntyre C, Wilson H, Ashton A, Lek C, Behar N, Davis-Hall M, Seneviratne N, Esteve L, Sirakaya M, Ali S, Pope S, Ahn J, Craig-McQuaide A, Gatfield W, Leong S, Demetri A, Kerr A, Rees C, Loveday J, Liu S, Wijesekera M, Maru D, Attalla M, Smith N, Brown D, Sritharan P, Shah A, Charavanamuttu V, Heppenstall-Harris G, Ng K, Raghvani T, Rajan N, Hulley K, Moody N, Williams M, Cotton A, Sharifpour M, Lwin K, Bright M, Chitnis A, Abdelhadi M, Semana A, Morgan F, Reid R, Dickson J, Anderson L, McMullan R, Ahern N, Asmadi A, Anderson L, Boon Xuan JL, Crozier L, McAleer S, Lees D, Adebayo A, Das M, Amphlett A, Al-Robeye A, Valli A, Khangura J, Winarski A, Ali A, Woodward H, Gouldthrope C, Turner M, Sasapu K, Tonkins M, Wild J, Robinson M, Hardie J, Heminway R, Narramore R, Ramjeeawon N, Hibberd A, Winslow F, Ho W, Chong B, Lim K, Ho S, Crewdson J, Singagireson S, Kalra N, Koumpa F, Jhala H, Soon W, Karia M, Rasiah M, Xylas D, Gilbert H, Sundar-Singh M, Wills J, Akhtar S, Patel S, Hu L, Brathwaite-Shirley C, Nayee H, Amin O, Rangan T, Turner E, McCrann C, Shepherd R, Patel N, Prest-Smith J, Auyoung E, Murtaza A, Coates A, Prys-Jones O, King M, Gaffney S, Dewdney C, Nehikhare I, Lavery J, Bassett J, Davies K, Ahmad K, Collins A, Acres M, Egerton C, Cheng K, Chen X, Chan N, Sheldon A, Khan S, Empey J, Ingram E, Malik A, Johnstone M, Goodier R, Shah J, Giles J, Sanders J, McLure S, Pal S, Rangedara A, Baker A, Asbjoernsen C, Girling C, Gray L, Gauntlett L, Joyner C, Qureshi S, Mogan Y, Ng J, Kumar A, Park J, Tan D, Choo K, Raman K, Buakuma P, Xiao C, Govinden S, Thompson O, Charalambos M, Brown E, Karsan R, Dogra T, Bullman L, Dawson P, Frank A, Abid H, Tung L, Qureshi U, Tahmina A, Matthews B, Harris R, O'Connor A, Mazan K, Iqbal S, Stanger S, Thompson J, Sullivan J, Uppal E, MacAskill A, Bamgbose F, Neophytou C, Carroll A, Rookes C, Datta U, Dhutia A, Rashid S, Ahmed N, Lo T, Bhanderi S, Blore C, Ahmed S, Shaheen H, Abburu S, Majid S, Abbas Z, Talukdar S, Burney L, Patel J, Al-Obaedi O, Roberts A, Mahboob S, Singh B, Sheth S, Karia P, Prabhudesai A, Kow K, Koysombat K, Wang S, Morrison P, Maheswaran Y, Keane P, Copley P, Brewster O, Xu G, Harries P, Wall C, Al-Mousawi A, Bonsu S, Cunha P, Ward T, Paul J, Nadanakumaran K, Tayeh S, Holyoak H, Remedios J, Theodoropoulou K, Luhishi A, Jacob L, Long F, Atayi A, Sarwar S, Parker O, Harvey J, Ross H, Rampal R, Thomas G, Vanmali P, McGowan C, Stein J, Robertson V, Carthew L, Teng V, Fong J, Street A, Thakker C, O'Reilly D, Bravo M, Pizzolato A, Khokhar H, Ryan M, Cheskes L, Carr R, Salih A, Bassiony S, Yuen R, Chrastek D, Rosen O'Sullivan H, Amajuoyi A, Wang A, Sitta O, Wye J, Qamar M, Major C, Kaushal A, Morgan C, Petrarca M, Allot R, Verma K, Dutt S, Chilima C, Peroos S, Kosasih S, Chin H, Ashken L, Pearse R, O'Loughlin R, Menon A, Singh K, Norton J, Sagar R, Jathanna N, Rothwell L, Watson N, Harding F, Dube P, Khalid H, Punjabi N, Sagmeister M, Gill P, Shahid S, Hudson-Phillips S, George D, Ashwood J, Lewis T, Dhar M, Sangal P, Rhema I, Kotecha D, Afzal Z, Syeed J, Prakash E, Jalota P, Herron J, Kimani L, Delport A, Shukla A, Agarwal V, Parthiban S, Thakur H, Cymes W, Rinkoff S, Turnbull J, Hayat M, Darr S, Khan U, Lim J, Higgins A, Lakshmipathy G, Forte B, Canning E, Jaitley A, Lamont J, Toner E, Ghaffar A, McDowell M, Salmon D, O'Carroll O, Khan A, Kelly M, Clesham K, Palmer C, Lyons R, Bell A, Chin R, Waldron R, Trimble A, Cox S, Ashfaq U, Campbell J, Holliday R, McCabe G, Morris F, Priestland R, Vernon O, Ledsam A, Vaughan R, Lim D, Bakewell Z, Hughes R, Koshy R, Jackson H, Narayan P, Cardwell A, Jubainville C, Arif T, Elliott L, Gupta V, Bhaskaran G, Odeleye A, Ahmed F, Shah R, Pickard J, Suleman Y, North A, McClymont L, Hussain N, Ibrahim I, Ng G, Wong V, Lim A, Harris L, Tharmachandirar T, Mittapalli D, Patel V, Lakhani M, Bazeer H, Narwani V, Sandhu K, Wingfield L, Gentry S, Adjei H, Bhatti M, Braganza L, Barnes J, Mistry S, Chillarge G, Stokes S, Cleere J, Wadanamby S, Bucko A, Meek J, Boxall N, Heywood E, Wiltshire J, Toh C, Ward A, Shurovi B, Horth D, Patel B, Ali B, Spencer T, Axelson T, Kretzmer L, Chhina C, Anandarajah C, Fautz T, Horst C, Thevathasan A, Ng J, Hirst F, Brewer C, Logan A, Lockey J, Forrest P, Keelty N, Wood A, Springford L, Avery P, Schulz T, Bemand T, Howells L, Collier H, Khajuria A, Tharakan R, Parsons S, Buchan A, McGalliard R, Mason J, Cundy O, Li N, Redgrave N, Watson R, Pezas T, Dennis Y, Segall E, Hameed M, Lynch A, Chamberlain M, Peck F, Neo Y, Russell G, Elseedawy M, Lee S, Foster N, Soo Y, Puan L, Dennis R, Goradia H, Qureshi A, Osman S, Reeves T, Dinsmore L, Marsden M, Lu Q, Pitts-Tucker T, Dunn C, Walford R, Heathcote E, Martin R, Pericleous A, Brzyska K, Reid K, Williams M, Wetherall N, McAleer E, Thomas D, Kiff R, Milne S, Holmes M, Bartlett J, Lucas de Carvalho J, Bloomfield T, Tongo F, Bremner R, Yong N, Atraszkiewicz B, Mehdi A, Tahir M, Sherliker G, Tear A, Pandey A, Broyd A, Omer H, Raphael M, Chaudhry W, Shahidi S, Jawad A, Gill C, Fisher IH, Adeleja I, Clark I, Aidoo-Micah G, Stather P, Salam G, Glover T, Deas G, Sim N, Obute R, Wynell-Mayow W, Sait M, Mitha N, de Bernier G, Siddiqui M, Shaunak R, Wali A, Cuthbert G, Bhudia R, Webb E, Shah S, Ansari N, Perera M, Kelly N, McAllister R, Stanley G, Keane C, Shatkar V, Maxwell-Armstrong C, Henderson L, Maple N, Manson R, Adams R, Semple E, Mills M, Daoub A, Marsh A, Ramnarine A, Hartley J, Malaj M, Jewell P, Whatling E, Hitchen N, Chen M, Goh B, Fern J, Rogers S, Derbyshire L, Robertson D, Abuhussein N, Deekonda P, Abid A, Harrison P, Aildasani L, Turley H, Sherif M, Pandey G, Filby J, Johnston A, Burke E, Mohamud M, Gohil K, Tsui A, Singh R, Lim S, O'Sullivan K, McKelvey L, O'Neill S, Roberts H, Brown F, Cao Y, Buckle R, Liew Y, Sii S, Ventre C, Graham C, Filipescu T, Yousif A, Dawar R, Wright A, Peters M, Varley R, Owczarek S, Hartley S, Khattak M, Iqbal A, Ali M, Durrani B, Narang Y, Bethell G, Horne L, Pinto R, Nicholls K, Kisyov I, Torrance H, English W, Lakhani S, Ashraf S, Venn M, Elangovan V, Kazmi Z, Brecher J, Sukumar S, Mastan A, Mortimer A, Parker J, Boyle J, Elkawafi M, Beckett J, Mohite A, Narain A, Mazumdar E, Sreh A, Hague A, Weinberg D, Fletcher L, Steel M, Shufflebotham H, Masood M, Sinha Y, Jenvey C, Kitt H, Slade R, Craig A, Deall C, Reakes T, Chervenkoff J, Strange E, O'Bryan M, Murkin C, Joshi D, Bergara T, Naqib S, Wylam D, Scotcher S, Hewitt C, Stoddart M, Kerai A, Trist A, Cole S, Knight C, Stevens S, Cooper G, Ingham R, Dobson J, O'Kane A, Moradzadeh J, Duffy A, Henderson C, Ashraf S, McLaughin C, Hoskins T, Reehal R, Bookless L, McLean R, Stone E, Wright E, Abdikadir H, Roberts C, Spence O, Srikantharajah M, Ruiz E, Matthews J, Gardner E, Hester E, Naran P, Simpson R, Minhas M, Cornish E, Semnani S, Rojoa D, Radotra A, Eraifej J, Eparh K, Smith D, Mistry B, Hickling S, Din W, Liu C, Mithrakumar P, Mirdavoudi V, Rashid M, Mcgenity C, Hussain O, Kadicheeni M, Gardner H, Anim-Addo N, Pearce J, Aslanyan A, Ntala C, Sorah T, Parkin J, Alizadeh M, White A, Edozie F, Johnston J, Kahar A, Navayogaarajah V, Patel B, Carter D, Khonsari P, Burgess A, Kong C, Ponweera A, Cody A, Tan Y, Ng A, Croall A, Allan C, Ng S, Raghuvir V, Telfer R, Greenhalgh A, McKerr C, Edison M, Patel B, Dear K, Hardy M, Williams P, Hassan S, Sajjad U, O'Neill E, Lopes S, Healy L, Jamal N, Tan S, Lazenby D, Husnoo S, Beecroft S, Sarvanandan T, Weston C, Bassam N, Rabinthiran S, Hayat U, Ng L, Varma D, Sukkari M, Mian A, Omar A, Kim J, Sellathurai J, Mahmood J, O'Connell C, Bose R, Heneghan H, Lalor P, Matheson J, Doherty C, Cullen C, Cooper D, Angelov S, Drislane C, Smith A, Kreibich A, Palkhi E, Durr A, Lotfallah A, Gold D, Mckean E, Dhanji A, Anilkumar A, Thacoor A, Siddiqui Z, Lim S, Piquet A, Anderson S, McCormack D, Gulati J, Ibrahim A, Murray S, Walsh S, McGrath A, Ziprin P, Chua E, Lou C, Bloomer J, Paine H, Osei-Kuffour D, White C, Szczap A, Gokani S, Patel K, Malys M, Reed A, Torlot G, Cumber E, Charania A, Ahmad S, Varma N, Cheema H, Austreng L, Petra H, Chaudhary M, Zegeye M, Cheung F, Coffey D, Heer R, Singh S, Seager E, Cumming S, Suresh R, Verma S, Ptacek I, Gwozdz A, Yang T, Khetarpal A, Shumon S, Fung T, Leung W, Kwang P, Chew L, Loke W, Curran A, Chan C, McGarrigle C, Mohan K, Cullen S, Wong E, Toale C, Collins D, Keane N, Traynor B, Shanahan D, Yan A, Jafree D, Topham C, Mitrasinovic S, Omara S, Bingham G, Lykoudis P, Miranda B, Whitehurst K, Kumaran G, Devabalan Y, Aziz H, Shoa M, Dindyal S, Yates J, Bernstein I, Rattan G, Coulson R, Stezaker S, Isaac A, Salem M, McBride A, McFarlane H, Yow L, MacDonald J, Bartlett R, Turaga S, White U, Liew W, Yim N, Ang A, Simpson A, McAuley D, Craig E, Murphy L, Shepherd P, Kee J, Abdulmajid A, Chung A, Warwick H, Livesey A, Holton P, Theodoreson M, Jenkin S, Turner J, Entwisle J, Marchal S, O'Connor S, Blege H, Aithie J, Sabine L, Stewart G, Jackson S, Kishore A, Lankage C, Acquaah F, Joyce H, McKevitt K, Coffey C, Fawaz A, Dolbec K, O'Sullivan D, Geraghty J, Lim E, Bolton L, FitzPatrick D, Robinson C, Ramtoola T, Collinson S, Grundy L, McEnhill P, Harbhajan Singh G, Loughran D, Golding D, Keeling R, Williams R, Whitham R, Yoganathan S, Nachiappan R, Egan R, Owasil R, Kwan M, He A, Goh R, Bhome R, Wilson H, Teoh P, Raji K, Jayakody N, Matthams J, Chong J, Luk C, Greig R, Trail M, Charalambous G, Rocke A, Gardiner N, Bulley F, Warren N, Brennan E, Fergurson P, Wilson R, Whittingham H, Brown E, Khanijau R, Gandhi K, Morris S, Boulton A, Chandan N, Barthorpe A, Maamari R, Sandhu S, McCann M, Higgs L, Balian V, Reeder C, Diaper C, Sale T, Ali H, Archer C, Clarke A, Heskin J, Hurst P, Farmer J, O'Flynn L, Doan L, Shuker B, Stott G, Vithanage N, Hoban K, Nesargikar P, Kennedy H, Grossart C, Tan E, Roy C, Sim P, Leslie K, Sim D, Abul M, Cody N, Tay A, Woon E, Sng S, Mah J, Robson J, Shakweh E, Wing V, Mills H, Li M, Barrow T, Balaji S, Jordan H, Phillips C, Naveed H, Hirani S, Tai A, Ratnakumaran R, Sahathevan A, Shafi A, Seedat M, Weaver R, Batho A, Punj R, Selvachandran H, Bhatt N, Botchey S, Khonat Z, Brennan K, Morrison C, Devlin E, Linton A, Galloway E, McGarvie S, Ramsay N, McRobbie H, Whewell H, Dean W, Nelaj S, Eragat M, Mishra A, Kane T, Zuhair M, Wells M, Wilkinson D, Woodcock N, Sun E, Aziz N, Ghaffar MKA. Critical care usage after major gastrointestinal and liver surgery: a prospective, multicentre observational study. Br J Anaesth 2019; 122:42-50. [PMID: 30579405 DOI: 10.1016/j.bja.2018.07.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/19/2018] [Accepted: 07/23/2018] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Patient selection for critical care admission must balance patient safety with optimal resource allocation. This study aimed to determine the relationship between critical care admission, and postoperative mortality after abdominal surgery. METHODS This prespecified secondary analysis of a multicentre, prospective, observational study included consecutive patients enrolled in the DISCOVER study from UK and Republic of Ireland undergoing major gastrointestinal and liver surgery between October and December 2014. The primary outcome was 30-day mortality. Multivariate logistic regression was used to explore associations between critical care admission (planned and unplanned) and mortality, and inter-centre variation in critical care admission after emergency laparotomy. RESULTS Of 4529 patients included, 37.8% (n=1713) underwent planned critical care admissions from theatre. Some 3.1% (n=86/2816) admitted to ward-level care subsequently underwent unplanned critical care admission. Overall 30-day mortality was 2.9% (n=133/4519), and the risk-adjusted association between 30-day mortality and critical care admission was higher in unplanned [odds ratio (OR): 8.65, 95% confidence interval (CI): 3.51-19.97) than planned admissions (OR: 2.32, 95% CI: 1.43-3.85). Some 26.7% of patients (n=1210/4529) underwent emergency laparotomies. After adjustment, 49.3% (95% CI: 46.8-51.9%, P<0.001) were predicted to have planned critical care admissions, with 7% (n=10/145) of centres outside the 95% CI. CONCLUSIONS After risk adjustment, no 30-day survival benefit was identified for either planned or unplanned postoperative admissions to critical care within this cohort. This likely represents appropriate admission of the highest-risk patients. Planned admissions in selected, intermediate-risk patients may present a strategy to mitigate the risk of unplanned admission. Substantial inter-centre variation exists in planned critical care admissions after emergency laparotomies.
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Dröge LA, Eckes L, Osman S, Pasternak J, Jordan J, Harter P, Mustea A, Muallem MZ, Wimberger P, Mahner S, Kurzeder C, Hasenburg A, Chekerov R, Denschlag D, Sehouli J. Management von Patientinnen mit gynäkologischem Sarkom – Eine Umfrage zur Behandlungspraxis der betreuenden GynäkologInnen im Rahmen der REGSA-Studie (Deutsches gynäkoonkologisches Sarkomregister) – MONITOR IX. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671009] [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: 10/28/2022] Open
Affiliation(s)
- LA Dröge
- Universitätsmedizin Charité Berlin Campus Virchow Klinikum, Gynäkologie, Berlin, Deutschland
| | - L Eckes
- Universitätsmedizin Charité Berlin Campus Virchow Klinikum, Gynäkologie, Berlin, Deutschland
| | - S Osman
- Universitätsmedizin Charité Berlin Campus Virchow Klinikum, Gynäkologie, Berlin, Deutschland
| | - J Pasternak
- Universitätsklinik Tübingen, Gynäkologie, Tübingen, Deutschland
| | - J Jordan
- NOGGO e.V., Gynäkologische Onkologie, Berlin, Deutschland
| | - P Harter
- Kliniken Essen Mitte, Gynäkologie und Gynäkoonkologie, Essen, Deutschland
| | - A Mustea
- Universitätsmedizin Greifswald, Gynäkologie, Greifswald, Deutschland
| | - MZ Muallem
- Universitätsmedizin Charité Berlin Campus Virchow Klinikum, Gynäkologie, Berlin, Deutschland
| | - P Wimberger
- Uni.-Klinikum Carl Gustav Carus, Gynäkologie und Onkologie, Dresden, Deutschland
| | - S Mahner
- Universität München, Gynäkologie und Geburtshilfe, München, Deutschland
| | - C Kurzeder
- Universitätsspital Basel, Gynäkologie, Basel, Schweiz
| | - A Hasenburg
- Universität Mainz, Gynäkologie und Geburtshilfe, Mainz, Deutschland
| | - R Chekerov
- Universitätsmedizin Charité Berlin Campus Virchow Klinikum, Gynäkologie, Berlin, Deutschland
| | - D Denschlag
- Hochtaunus-Kliniken, Gynäkologie und Geburtshilfe, Bad Homburg, Deutschland
| | - J Sehouli
- Universitätsmedizin Charité Berlin Campus Virchow Klinikum, Gynäkologie, Berlin, Deutschland
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Klerks PL, Kascak A, Cazan AM, Deb Adhikary N, Chistoserdov A, Shaik A, Osman S, Louka FR. Effects of the Razor Clam Tagelus plebeius on the Fate of Petroleum Hydrocarbons: A Mesocosm Experiment. Arch Environ Contam Toxicol 2018; 75:306-315. [PMID: 29470617 DOI: 10.1007/s00244-018-0515-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 02/12/2018] [Indexed: 06/08/2023]
Abstract
The relationship between organisms and contaminants may be a two-way interaction: contaminants affecting the biota and the biota affecting the environmental fate and distribution of the contaminants. This may be especially so for sediment-dwelling organisms, because their burrowing and feeding can drastically influence sediment characteristics. The present study looked at the influence of the suspension-feeding stout razor clam Tagelus plebeius on the distribution of crude oil and pyrene in greenhouse mesocosm experiments. Water column turbidity and sediment redox also were monitored during the 15- to 30-day exposures to provide information on the influence of hydrocarbons and the razor clams on environmental conditions. For the experiment with crude oil, sediment was taken from the mesocosms at the end of the experiment, and the hydrocarbon-degradation potential was assessed in incubations with 14C-naphthalene. The experiments used four treatments: hydrocarbons present/absent and razor clams present/absent. Hydrocarbon dosing levels were relatively low (1 mL of oil or 30 mg of pyrene per mesocosm with 22 L of natural sediment and 11 L of seawater). The presence of the razor clams resulted in hydrocarbon concentrations at the sediment surface being 25% lower than in mesocosms without clams. No consistent effects were noted for polycyclic aromatic hydrocarbon (PAH) concentrations in the water column or in subsurface sediment. The naphthalene-degradation potential was elevated for sediment from mesocosms dosed with oil, but the presence of the clams did not affect this potential. The presence of the razor clams resulted in a lowering of water column turbidity, but no effect on sediment redox. The hydrocarbon addition had no effect on turbidity, but sediment redox was lowered. While results show that the presence of the razor clams resulted in a loss of hydrocarbons from the surface sediment, the other results do not provide a clear picture of the underlying mechanisms and the fate of the PAHs lost from the sediment surface. We hypothesize that the loss of surface sediment PAHs was due to burial of surface sediment and possibly bioaccumulation by the clams. While additional research is needed for further insights into underlying mechanisms, the present work demonstrates that the presence of sediment-burrowing suspension feeders decreases hydrocarbon levels in surface sediment. This means that assessments of the impact of an oil spill should pay attention to effects on these organisms and to their influence on the fate and distribution of the spilled oil.
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Affiliation(s)
- P L Klerks
- Department of Biology, University of Louisiana at Lafayette, Box 43602, Lafayette, LA, 70504, USA.
| | - A Kascak
- Department of Biology, University of Louisiana at Lafayette, Box 43602, Lafayette, LA, 70504, USA
| | - A M Cazan
- Department of Biology, University of Louisiana at Lafayette, Box 43602, Lafayette, LA, 70504, USA
| | - N Deb Adhikary
- Department of Biology, University of Louisiana at Lafayette, Box 43602, Lafayette, LA, 70504, USA
| | - A Chistoserdov
- Department of Biology, University of Louisiana at Lafayette, Box 43602, Lafayette, LA, 70504, USA
| | - A Shaik
- Department of Chemistry, University of Louisiana at Lafayette, Box 43700, Lafayette, LA, 70504, USA
| | - S Osman
- Department of Chemistry, University of Louisiana at Lafayette, Box 43700, Lafayette, LA, 70504, USA
| | - F R Louka
- Department of Chemistry, University of Louisiana at Lafayette, Box 43700, Lafayette, LA, 70504, USA
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O'Neill A, King R, Crowther K, Osman S, Jain S, Hounsell A, O'Sullivan J. PV-0365: CASPIR Trial: Calculi as an alternative to fiducial markers for IGRT in localised prostate cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30675-3] [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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V K, Osman S, Jassal K, Sarkar B, Singh S, Giri U, T G. EP-1774: Utilization Of Osld As The Quality Control Indicator For In-Vivo Measurements In Tbi Treatment. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32083-8] [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: 11/30/2022]
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Wikramanayake WNM, Mandy W, Shahper S, Kaur S, Kolli S, Osman S, Reid J, Jefferies-Sewell K, Fineberg NA. Autism spectrum disorders in adult outpatients with obsessive compulsive disorder in the UK. Int J Psychiatry Clin Pract 2018; 22:54-62. [PMID: 28705096 DOI: 10.1080/13651501.2017.1354029] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Patients with obsessive compulsive disorder (OCD) frequently show traits of autism spectrum disorders (ASD). This is one of the first studies to explore the clinical impact of the overlap between OCD and ASD as a categorical diagnosis. METHODS A cross-sectional survey in 73 adult outpatients with DSM-IV OCD. Autistic traits were measured using the Autism-Spectrum Quotient (AQ). A clinical estimate ASD diagnosis was made by interview using DSM-IV-TR criteria. OCD patients with and without autistic traits or ASD were compared on demographic and clinical parameters and level of OCD treatment-resistance based on treatment history. RESULTS Thirty-four (47%) patients scored above the clinical threshold on the AQ (≥26) and 21 (27.8%) met diagnostic criteria for ASD. These diagnoses had not been made before. Patients with autistic traits showed a borderline significant increase in OCD symptom-severity (Yale-Brown Obsessive Compulsive Scale (Y-BOCS); p = .054) and significantly increased impairment of insight (Brown Assessment of Beliefs Scale; p = .01). There was a positive correlation between AQ and Y-BOCS scores (p = .04), but not with OCD treatment resistance. CONCLUSION There is a high prevalence of previously undiagnosed ASD in patients with OCD. ASD traits are associated with greater OCD symptom-severity and poor insight.
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Affiliation(s)
- Waduge Nishani Maheshi Wikramanayake
- a Cavell Centre , Cambridgeshire and Peterborough NHS Foundation Trust , Peterborough , UK.,b Postgraduate Medical School, University of Hertfordshire , Hatfield , UK
| | - William Mandy
- c Research Department of Clinical, Educational and Health Psychology , University College London , London , UK
| | - Sonia Shahper
- d Department of Life & Medical Science , University of Hertfordshire , Hatfield , UK
| | - Sukhwinder Kaur
- e South West Crisis and Home Treatment Team , Hertfordshire Partnership University NHS Foundation Trust , Hemel Hempstead , UK
| | | | - Selma Osman
- g Northumberland , Tyne & Wear NHS Foundation Trust , Newcastle , UK
| | - Jemma Reid
- h Highly Specialized Obsessive Compulsive Disorders Service , Hertfordshire Partnership University NHS Foundation Trust , Welwyn Garden City , UK
| | | | - Naomi Anne Fineberg
- b Postgraduate Medical School, University of Hertfordshire , Hatfield , UK.,i Hertfordshire Partnership University NHS Foundation Trust , Hemel Hempstead , UK
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Ramli R, Zin N, Sahari Ashaari N, Ismail M, Osman S. Design of graphic and animation in game interface based on cultural value: verification. J Fundam and Appl Sci 2018. [DOI: 10.4314/jfas.v9i5s.14] [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: 11/17/2022] Open
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Osman S, Ziegler C, Gibson R, Mahmood R, Moraros J. The Association between Risk Factors and Chronic Obstructive Pulmonary Disease in Canada: A Cross-sectional Study Using the 2014 Canadian Community Health Survey. Int J Prev Med 2017; 8:86. [PMID: 29142652 PMCID: PMC5672655 DOI: 10.4103/ijpvm.ijpvm_330_17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/07/2017] [Indexed: 01/26/2023] Open
Abstract
Background: The global prevalence of chronic obstructive pulmonary disease (COPD) is expected to increase and the disease is projected to be the third leading cause of death by the year 2020. The purpose of this study was to measure the prevalence and determine the risk factors for COPD in Canada. Methods: This is a cross-sectional study that uses data from a nationally generalizable survey, the Canadian Community Health Survey, 2014. There were 46,924 respondents aged 35 years or older. Uni- and multi-variate logistic regression analyses were conducted to determine the risk factors associated with COPD. Results: The overall prevalence of COPD in the surveyed population was 5.69%. Results from multivariate logistic regression showed that COPD was significantly higher among individuals who were 65 years or older (odds ratio [OR] =4.43; 95% confidence interval [CI]: 3.69–5.33), current smokers (OR = 5.13; 95% CI: 4.43–5.95), underweight or obese by body mass index ([OR = 1.81; 95% CI: 1.38–2.38] and [OR = 1.58; 95% CI: 1.41–1.77], respectively), with a total personal income of <$20,000 (OR = 3.67; 95% CI: 2.95–4.57,), and some postsecondary education (OR = 1.42; 95% CI: 1.14–1.76). Immigrants were less likely to have COPD compared to Canadian-born respondents (OR = 0.67; 95% CI: 0.57–0.79). Conclusions: COPD is a growing and serious public health issue in Canada. The risk factors identified in this study provide useful targets to health promotion and education initiatives, health-care providers, and public health organizations to decrease the prevalence of COPD.
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Affiliation(s)
- Selma Osman
- School of Public Health, University of Saskatchewan, Saskatoon, Canada
| | - Chelsea Ziegler
- School of Public Health, University of Saskatchewan, Saskatoon, Canada
| | - Randie Gibson
- School of Public Health, University of Saskatchewan, Saskatoon, Canada
| | - Razi Mahmood
- School of Public Health, University of Saskatchewan, Saskatoon, Canada
| | - John Moraros
- School of Public Health, University of Saskatchewan, Saskatoon, Canada
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Yassin E, Abd El-Khalik A, El-Sebaay M, Osman S. Studies on Biology of Ascid mite, Blattisocius keegani (Acari: Gamasida: Ascidae) When Fed on Two Astigmatid Mites at Different Laboratory Conditions. Egyptian Academic Journal of Biological Sciences A, Entomology 2017. [DOI: 10.21608/eajbsa.2017.12538] [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: 10/28/2022] Open
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Nguyen Ba AN, Strome B, Osman S, Legere EA, Zarin T, Moses AM. Parallel reorganization of protein function in the spindle checkpoint pathway through evolutionary paths in the fitness landscape that appear neutral in laboratory experiments. PLoS Genet 2017; 13:e1006735. [PMID: 28410373 PMCID: PMC5409178 DOI: 10.1371/journal.pgen.1006735] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 04/28/2017] [Accepted: 04/05/2017] [Indexed: 11/22/2022] Open
Abstract
Regulatory networks often increase in complexity during evolution through gene duplication and divergence of component proteins. Two models that explain this increase in complexity are: 1) adaptive changes after gene duplication, such as resolution of adaptive conflicts, and 2) non-adaptive processes such as duplication, degeneration and complementation. Both of these models predict complementary changes in the retained duplicates, but they can be distinguished by direct fitness measurements in organisms with short generation times. Previously, it has been observed that repeated duplication of an essential protein in the spindle checkpoint pathway has occurred multiple times over the eukaryotic tree of life, leading to convergent protein domain organization in its duplicates. Here, we replace the paralog pair in S. cerevisiae with a single-copy protein from a species that did not undergo gene duplication. Surprisingly, using quantitative fitness measurements in laboratory conditions stressful for the spindle-checkpoint pathway, we find no evidence that reorganization of protein function after gene duplication is beneficial. We then reconstruct several evolutionary intermediates from the inferred ancestral network to the extant one, and find that, at the resolution of our assay, there exist stepwise mutational paths from the single protein to the divergent pair of extant proteins with no apparent fitness defects. Parallel evolution has been taken as strong evidence for natural selection, but our results suggest that even in these cases, reorganization of protein function after gene duplication may be explained by neutral processes.
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Affiliation(s)
- Alex N. Nguyen Ba
- Department of Cell & Systems Biology, University of Toronto, Toronto, Ontario, Canada
- Center for Analysis of Evolution and Function, University of Toronto, Toronto, Ontario, Canada
| | - Bob Strome
- Department of Cell & Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - Selma Osman
- Department of Cell & Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - Elizabeth-Ann Legere
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
| | - Taraneh Zarin
- Department of Cell & Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - Alan M. Moses
- Department of Cell & Systems Biology, University of Toronto, Toronto, Ontario, Canada
- Center for Analysis of Evolution and Function, University of Toronto, Toronto, Ontario, Canada
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
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Osman S, Braicu I, Richter R, Almuheimed J, Sehouli J, Muallem MZ. Oberbauchchirurgie beim Ovarialkarzinom (Splenektomie im Fokus). Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592984] [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] Open
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Muallem MZ, Almuheimid J, Braicu EI, Plett H, Richter R, Osman S, Sehouli J. Oberbauchchirurgie beim Ovarialkarzinom (Zwerchfellresektion im Fokus). Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592691] [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] Open
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Lowden CM, Attiah M, Garvin G, Macdermid JC, Osman S, Faber KJ. The Prevalence of Wrist Ganglia in an Asymptomatic Population: Magnetic Resonance Evaluation. ACTA ACUST UNITED AC 2016; 30:302-6. [PMID: 15862373 DOI: 10.1016/j.jhsb.2005.02.012] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [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: 10/14/2003] [Accepted: 02/28/2005] [Indexed: 11/17/2022]
Abstract
Magnetic resonance imaging (MRI) was performed on the wrists of 103 asymptomatic volunteers. The images were evaluated independently by two musculoskeletal radiologists and one orthopaedic surgeon. Wrist ganglia were identified in 53 out of the 103 wrists. The average long and short axes measurements were 8 mm (range 3–22) and 3 mm (range 2–10), respectively. Seventy per cent of the ganglia originated from the palmar capsule in the region of the interval between the radioscaphocapitate ligament and the long radiolunate ligament. Fourteen per cent of the ganglia were dorsal and originated from the dorsal, distal fibres of the scapholunate ligament. Two ganglia had surrounding soft tissue oedema and one had an associated intraosseous component. Unlike previous surgical and pathological series, our study showed that palmar wrist ganglia are more common than dorsal wrist ganglia. The vast majority of these asymptomatic ganglia occur without associated ligamentous disruption, soft tissue oedema or intraosseous communication.
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Affiliation(s)
- C M Lowden
- Hand and Upper Limb Centre, St. Joseph's Health Care, London, UK
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Osman R, Sarbu V, Osman S. Computed tomography in diagnosis and staging of the retroperitoneal tumors. ARS Medica Tomitana 2016. [DOI: 10.1515/arsm-2016-0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
The main role of retroperitoneal tumor diagnosis is the imaging examination. Diagnostic imaging is essential for describing and predicting lesion integrity limits adjacent organs.
Methods. The results are based on a sample of 53 patients admitted in the Urology Clinic and investigated during the period 1 January 2005 - 31 December 2014. Results. CT scan for retroperitoneal tumor: vascular tumors are diagnosed in 100% of cases, while endocrine tumors and lymphomas values are between 50-66.67% in terms of a positive diagnosis. In 54.71% of cases studied was identified retroperitoneal tumor invasion into adjacent structures (29 patients), and for 12 cases (22.64%) CT scan was not conclusive enough. CT scan investigation to identify metastasis has statistical significance (p <0.01) according to the different types of retroperitoneal tumors, there were on average 35% for highlighting values of peritumoral lymph nodes and 13% for metastases. The relationship between retroperitoneal tumor size detected by CT (coefficient R =0.736) than those found intraoperative CT examination reveals that tends to underestimate the retroperitoneal tumor size.
Conclusions. Imaging diagnosis is mainframe of positive diagnosis for retroperitoneal tumors. CT scanning bring data not only on tumor location, but also about the nature of injuries (cystic or solid), presence or absence of necrosis, invasion of adjacent structures and abdominal metastases.
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Affiliation(s)
- R. Osman
- Faculty of Medicine, University “Ovidius” of Constanta University Street, No. 1, Campus B Constanta, Romania
| | - V. Sarbu
- Faculty of Medicine, University “Ovidius” of Constanta
| | - S. Osman
- Faculty of Medicine, University “Ovidius” of Constanta
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Manssor E, Abuderman A, Osman S, Alenezi SB, Almehemeid S, Babikir E, Alkhorayef M, Sulieman A. Radiation doses in chest, abdomen and pelvis CT procedures. Radiat Prot Dosimetry 2015; 165:194-198. [PMID: 25852181 DOI: 10.1093/rpd/ncv107] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Computed tomography (CT) scanning is recognised as a high-radiation dose modality and estimated to be 17 % of the radiological procedure and responsible for 70 % of medical radiation exposure. Although diagnostic X rays provide great benefits, their use involves some risk for developing cancer. The objectives of this study are to estimate radiation doses during chest, abdomen and pelvis CT. A total of 51 patients were examined for the evaluation of metastasis of a diagnosed primary tumour during 4 months. A calibrated CT machine from Siemens 64 slice was used. The mean age was 48.0 ± 18.6 y. The mean patient weight was 73.8 ± 16.1 kg. The mean dose-length product was 1493.8 ± 392.1 mGy cm, Volume CT dose index (CTDI vol) was 22.94 ± 5.64 mGy and the mean effective dose was 22.4 ± 5.9 mSv per procedure. The radiation dose per procedure was higher as compared with previous studies. Therefore, the optimisation of patient's radiation doses is required in order to reduce the radiation risk.
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Affiliation(s)
- E Manssor
- Radiology and Medical Imaging Department, Prince Sattam bin Abdulaziz University, College of Applied Medical Sciences, Alkharj, Saudi Arabia
| | - A Abuderman
- Basic Sciences Department, Sattam bin Abdulaziz University, College of Medicine, Alkharj, Saudi Arabia
| | - S Osman
- Radiology and Medical Imaging Department, Prince Sattam bin Abdulaziz University, College of Applied Medical Sciences, Alkharj, Saudi Arabia
| | - S B Alenezi
- Radiology Department, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - S Almehemeid
- Radiology Department, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - E Babikir
- Radiology Department, King Saud University, College of Applied Medical Science, Riyadh, Saudi Arabia
| | - M Alkhorayef
- Radiology Department, King Saud University, College of Applied Medical Science, Riyadh, Saudi Arabia
| | - A Sulieman
- Radiology and Medical Imaging Department, Prince Sattam bin Abdulaziz University, College of Applied Medical Sciences, Alkharj, Saudi Arabia
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Chimmanamada D, Ying W, Zhang J, Proia D, Przewloka T, Jiang J, Vutukuri D, Lu G, Osman S, Chen S, Chu J, Rao P, Zhou D, Inoue T, Ogawa LS, Singh R, Tatsuta N, Sonderfan A, Cortis C. 260 Hsp90 Inhibitor Drug Conjugates (HDC): Payloads and possibilities. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70386-7] [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: 10/24/2022]
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Chang C, Amran F, Riazi M, Yunus M, Osman S, Noordin R. Evaluation of two commercial rapid tests for laboratory diagnosis of Leptospirosis in Malaysia. Asian Pacific Journal of Tropical Disease 2014. [DOI: 10.1016/s2222-1808(14)60557-0] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Essers M, Hol S, Osman S, Poortmans P. EP-1188: When to use volumetric IMRT for left sided breast cancer patients? Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31306-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Essers M, Osman S, Hol S, van Mierlo E, Martens R, van Swalen L, Poortmans P. PO-0805: Combining VMAT and breath hold to reduce heart and lung dose for locoregional treatment of left-sided breast cancer. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33111-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: 11/16/2022]
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Osman S, Donkers T, Essers M, Hol S, van Mierlo E, van Swalen L, Martens R, Poortmans P. PO-0830: Accelerated Partial Breast Irradiation (APBI): are breath hold and volumetric radiation therapy useful? Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33136-4] [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: 11/17/2022]
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Dominguez L, Dominguez L, Hopkins K, Mutalak O, Harish S, Nalabanda A, Osman S, Robinson L, Cohen C, Jones R. P153 Female genital mutilation (FGM)—providing a holistic approach and challenging taboos in a sexual health setting. Sex Transm Infect 2012. [DOI: 10.1136/sextrans-2012-050601c.153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Någren K, Halldin C, Pike VW, Allonen T, Hietala J, Swahn CG, Andrée B, Farde L, Osman S, Grasby P. Radioactive metabolites of the 5-HT1A receptor pet radioligand, [carbonyl-11C]way-100635, measured in human plasma samples. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.25804401167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Brown GD, Osman S, Wilson HK, Aboagye E, Price PM, Luthra SK, Brady F. Metabolism of [11C-methyl]choline in tumour bearing mice and synthesis and isolation of its catabolite [11C-methyl]betaine. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.2580440137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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