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Joseph D, Theron AJ, Feldman C, Anderson R, Tintinger GR. Pro-inflammatory interactions of streptolysin O toxin with human neutrophils in vitro. J Immunotoxicol 2024; 21:2345152. [PMID: 38659406 DOI: 10.1080/1547691x.2024.2345152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 04/15/2024] [Indexed: 04/26/2024] Open
Abstract
The recent global resurgence of severe infections caused by the Group A streptococcus (GAS) pathogen, Streptococcus pyogenes, has focused attention on this microbial pathogen, which produces an array of virulence factors, such as the pore-forming toxin, streptolysin O (SOT). Importantly, the interactions of SOT with human neutrophils (PMN), are not well understood. The current study was designed to investigate the effects of pretreatment of isolated human PMN with purified SOT on several pro-inflammatory activities, including generation of reactive oxygen species (ROS), degranulation (elastase release), influx of extracellular calcium (Ca2+) and release of extracellular DNA (NETosis), using chemiluminescence, spectrophotometric and fluorimetric procedures, respectively. Exposure of PMN to SOT alone caused modest production of ROS and elastase release, while pretreatment with the toxin caused significant augmentation of chemoattractant (fMLP)-activated ROS generation and release of elastase by activated PMN. These effects of treatment of PMN with SOT were associated with both a marked and sustained elevation of cytosolic Ca2+concentrations and significant increases in the concentrations of extracellular DNA, indicative of NETosis. The current study has identified a potential role for SOT in augmenting the Ca2+-dependent pro-inflammatory interactions of PMN, which, if operative in a clinical setting, may contribute to hyper-activation of PMN and GAS-mediated tissue injury.
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Affiliation(s)
- D Joseph
- Department of Internal Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - A J Theron
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - C Feldman
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - R Anderson
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - G R Tintinger
- Department of Internal Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
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Lipshitz M, Visser J, Anderson R, Nel DG, Smit T, Steel HC, Rapoport BL. Relationships of emerging biomarkers of cancer cachexia with quality of life, appetite, and cachexia. Support Care Cancer 2024; 32:349. [PMID: 38744744 PMCID: PMC11093781 DOI: 10.1007/s00520-024-08549-5] [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: 10/30/2023] [Accepted: 05/05/2024] [Indexed: 05/16/2024]
Abstract
PURPOSE Quality of life (QoL), appetite, cachexia, and biomarkers [albumin, hemoglobin (Hb), neutrophils, lymphocytes, platelets, C-reactive protein (CRP), tumor necrosis factor alpha (TNFα), interleukin 6 (IL-6), interleukin 8 (IL-8), C-X-C motif chemokine ligand 5 (CXCL5) and citrullinated histoneH3 (H3Cit)] were compared for 40 cases with advanced cancer and 40 healthy controls. Baseline differences and significant relationships were explored for biomarkers with QoL, appetite, and cachexia. METHODS In a prospective case-control, age and sex matched study, the European Organisation for the Research and Treatment of Cancer Quality of Life-C30 questionnaire (EORTC-QLQ-C30) for QoL, the Functional Assessment of Anorexia and Cachexia Therapy assessment (FAACT A/CS-12) for appetite, and a five-factor cachexia assessment tool for cachexia assessment were performed. Routine hematological measurements and blood chemistry analyses together with ELISA procedures and a Multiplex® bead array platform, were used for biomarker analysis. Descriptive statistics and regression analyses were undertaken. P < 0.05 defined statistical significance. RESULTS Global health status (QL-G), functional scales (QL-FS), and symptom scales (QL-SS) differed for cases and controls (p < 0.01). In cases, differences were observed for QL-G (p < 0.01), QL-FS (p < 0.01), and QL-SS (p = 0.01) compared to standardized references values. FAACT A/CS-12 scores differed significantly between cases and controls (p < 0.01) and 30% of cases scored "poor" appetites. Cachexia was present in 60% of cases. Albumin, lymphocytes, platelets, Hb, platelet to lymphocyte ratio (PLR), systemic immune-inflammation index (SII), CRP, TNFα, all at p < 0.01, neutrophil to lymphocyte ratio (NLR) (p = 0.02), IL-6 (p < 0.04), and IL-8 (p = 0.02) differed significantly between cases and controls. No difference was found for CXCL5 or H3Cit. Albumin NLR, Hb, PLR, SII, TNFα, IL-8, and CRP showed significant relationships with all aspects of QoL. QL-FS was significantly related to CXCL5 (p = 0.04), significant relationships with FAACT A/CS-12 included: NLR (p = 0.002), Hb (p < 0.001), and PLR (p < 0.01). NLR, PLR, SII, TNFα, IL-6, IL-8, and CRP correlated positively to cachexia and albumin while Hb and lymphocyte count correlated negatively to cachexia. CONCLUSION CXCL5 and H3Cit were not reliable biomarkers for cancer cachexia, nor significantly related to QoL, appetite or cachexia. Albumin, NLR, Hb, PLR, SII, TNFα, IL-8, and CRP were reliable indicators of QoL, appetite, and cachexia. Future research should include other novel biomarkers namely growth differentiation factor-15 (GDF-15), fibroblast growth factor 21 (FGF-21), fractakline, interferon gamma (IFN-y), IL-16, macrophage colony stimulating factor (M-CSF), and macrophage procoagulant-inducing factor (MPIF).
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Affiliation(s)
- M Lipshitz
- Division of Human Nutrition, Stellenbosch University, Stellenbosch, 7600, South Africa.
- Melanie Levy Dietician, Johannesburg, 2192, South Africa.
| | - J Visser
- Division of Human Nutrition, Stellenbosch University, Stellenbosch, 7600, South Africa
| | - R Anderson
- Department of Immunology, School of Medicine, Faculty of Faculty of Health Sciences, University of Pretoria, Pretoria, 001, South Africa
| | - D G Nel
- Centre for Statistical Consultation, Stellenbosch University, Stellenbosch, South Africa
| | - T Smit
- The Medical Oncology Centre of Rosebank, Johannesburg, South Africa
| | - H C Steel
- Department of Immunology, School of Medicine, Faculty of Faculty of Health Sciences, University of Pretoria, Pretoria, 001, South Africa
| | - B L Rapoport
- Department of Immunology, School of Medicine, Faculty of Faculty of Health Sciences, University of Pretoria, Pretoria, 001, South Africa
- The Medical Oncology Centre of Rosebank, Johannesburg, South Africa
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Vasconcelos A, King JD, Nunes-Alves C, Anderson R, Argaw D, Basáñez MG, Bilal S, Blok DJ, Blumberg S, Borlase A, Brady OJ, Browning R, Chitnis N, Coffeng LE, Crowley EH, Cucunubá ZM, Cummings DAT, Davis CN, Davis EL, Dixon M, Dobson A, Dyson L, French M, Fronterre C, Giorgi E, Huang CI, Jain S, James A, Kim SH, Kura K, Lucianez A, Marks M, Mbabazi PS, Medley GF, Michael E, Montresor A, Mutono N, Mwangi TS, Rock KS, Saboyá-Díaz MI, Sasanami M, Schwehm M, Spencer SEF, Srivathsan A, Stawski RS, Stolk WA, Sutherland SA, Tchuenté LAT, de Vlas SJ, Walker M, Brooker SJ, Hollingsworth TD, Solomon AW, Fall IS. Accelerating Progress Towards the 2030 Neglected Tropical Diseases Targets: How Can Quantitative Modeling Support Programmatic Decisions? Clin Infect Dis 2024; 78:S83-S92. [PMID: 38662692 PMCID: PMC11045030 DOI: 10.1093/cid/ciae082] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024] Open
Abstract
Over the past decade, considerable progress has been made in the control, elimination, and eradication of neglected tropical diseases (NTDs). Despite these advances, most NTD programs have recently experienced important setbacks; for example, NTD interventions were some of the most frequently and severely impacted by service disruptions due to the coronavirus disease 2019 (COVID-19) pandemic. Mathematical modeling can help inform selection of interventions to meet the targets set out in the NTD road map 2021-2030, and such studies should prioritize questions that are relevant for decision-makers, especially those designing, implementing, and evaluating national and subnational programs. In September 2022, the World Health Organization hosted a stakeholder meeting to identify such priority modeling questions across a range of NTDs and to consider how modeling could inform local decision making. Here, we summarize the outputs of the meeting, highlight common themes in the questions being asked, and discuss how quantitative modeling can support programmatic decisions that may accelerate progress towards the 2030 targets.
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Affiliation(s)
- Andreia Vasconcelos
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Old Road Campus, Oxford, United Kingdom
- Centre for Global Health Research, Nuffield Department of Medicine, University of Oxford, Old Road Campus, Oxford, United Kingdom
| | - Jonathan D King
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
| | - Cláudio Nunes-Alves
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Old Road Campus, Oxford, United Kingdom
| | - Roy Anderson
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
- Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, St Mary's Campus, Imperial College London, London, United Kingdom
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
| | - Daniel Argaw
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
| | - Maria-Gloria Basáñez
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
- Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, St Mary's Campus, Imperial College London, London, United Kingdom
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
| | - Shakir Bilal
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, USA
| | - David J Blok
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Seth Blumberg
- Francis I. Proctor Foundation, University of California, San Francisco, California, USA
| | - Anna Borlase
- Department of Biology, University of Oxford, Oxford, United Kingdom
| | - Oliver J Brady
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Raiha Browning
- The Department of Statistics, The University of Warwick, Coventry, United Kingdom
| | - Nakul Chitnis
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Allschwil, Switzerland
- University of Basel, Basel, Switzerland
| | - Luc E Coffeng
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Emily H Crowley
- Zeeman Institute for System Biology and Infectious Disease Epidemiology Research, The University of Warwick, Coventry, United Kingdom
- Mathematics Institute, The University of Warwick, Coventry, United Kingdom
| | - Zulma M Cucunubá
- Departamento de Epidemiología Clínica y Bioestadística, Facultad de Medicina, Universidad Pontificia Javeriana, Bogotá, Colombia
| | - Derek A T Cummings
- Department of Biology, University of Florida, Gainesville, Florida, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida, USA
| | - Christopher Neil Davis
- Zeeman Institute for System Biology and Infectious Disease Epidemiology Research, The University of Warwick, Coventry, United Kingdom
- Mathematics Institute, The University of Warwick, Coventry, United Kingdom
| | - Emma Louise Davis
- Mathematics Institute, The University of Warwick, Coventry, United Kingdom
| | - Matthew Dixon
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
- Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, St Mary's Campus, Imperial College London, London, United Kingdom
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
| | - Andrew Dobson
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey, USA
| | - Louise Dyson
- Zeeman Institute for System Biology and Infectious Disease Epidemiology Research, The University of Warwick, Coventry, United Kingdom
- Mathematics Institute, The University of Warwick, Coventry, United Kingdom
| | - Michael French
- Schistosomiasis Control Initiative, Department of Infectious Disease Epidemiology, St Mary's Campus, Imperial College London, London, United Kingdom
- RTI International, Washington, D.C., USA
| | - Claudio Fronterre
- CHICAS, Lancaster Medical School, Lancaster University, Lancaster, United Kingdom
| | - Emanuele Giorgi
- CHICAS, Lancaster Medical School, Lancaster University, Lancaster, United Kingdom
| | - Ching-I Huang
- Zeeman Institute for System Biology and Infectious Disease Epidemiology Research, The University of Warwick, Coventry, United Kingdom
- Mathematics Institute, The University of Warwick, Coventry, United Kingdom
| | - Saurabh Jain
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
| | - Ananthu James
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Sung Hye Kim
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
| | - Klodeta Kura
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
- Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, St Mary's Campus, Imperial College London, London, United Kingdom
- MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, United Kingdom
| | - Ana Lucianez
- Communicable Diseases Prevention, Control, and Elimination, Pan American Health Organization, Washington D.C., USA
| | - Michael Marks
- Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Pamela Sabina Mbabazi
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
| | - Graham F Medley
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Edwin Michael
- College of Public Health, University of South Florida, Tampa, Florida, USA
| | - Antonio Montresor
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
| | - Nyamai Mutono
- Centre for Epidemiological Modelling and Analysis, University of Nairobi, Nairobi, Kenya
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
| | - Thumbi S Mwangi
- Centre for Epidemiological Modelling and Analysis, University of Nairobi, Nairobi, Kenya
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Kat S Rock
- Zeeman Institute for System Biology and Infectious Disease Epidemiology Research, The University of Warwick, Coventry, United Kingdom
- Mathematics Institute, The University of Warwick, Coventry, United Kingdom
| | - Martha-Idalí Saboyá-Díaz
- Communicable Diseases Prevention, Control, and Elimination, Pan American Health Organization, Washington D.C., USA
| | - Misaki Sasanami
- Lancaster Medical School, Lancaster University, Lancaster, United Kingdom
| | - Markus Schwehm
- ExploSYS GmbH, Interdisciplinary Institute for Exploratory Systems, Leinfelden-Echterdingen, Germany
| | - Simon E F Spencer
- Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Ariktha Srivathsan
- Francis I. Proctor Foundation, University of California, San Francisco, California, USA
| | - Robert S Stawski
- Institute of Public Health and Wellbeing, School of Health and Social Care, University of Essex, Essex, United Kingdom
| | - Wilma A Stolk
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Samuel A Sutherland
- Zeeman Institute for System Biology and Infectious Disease Epidemiology Research, The University of Warwick, Coventry, United Kingdom
- Warwick Medical School, The University of Warwick, Coventry, United Kingdom
| | | | - Sake J de Vlas
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Martin Walker
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
- Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, London, United Kingdom
| | | | - T Déirdre Hollingsworth
- Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Nuffield Department of Medicine, University of Oxford, Old Road Campus, Oxford, United Kingdom
| | - Anthony W Solomon
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
| | - Ibrahima Socé Fall
- Global Neglected Tropical Diseases Programme, World Health Organization, Geneva, Switzerland
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Mengistu B, Liyew EF, Chernet M, Tasew G, Gomez SR, Maddren R, Collyer B, Anjulo U, Tamiru A, Forbes K, Mehari Z, Deribe K, Yadeta T, Salasibew M, Tollera G, Anderson R. Correction: Progress in controlling the transmission of schistosome parasites in Southern Ethiopia: the Geshiyaro Project in the Wolaita Zone. Parasit Vectors 2024; 17:158. [PMID: 38549079 PMCID: PMC10979624 DOI: 10.1186/s13071-024-06251-3] [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: 04/01/2024] Open
Affiliation(s)
- Birhan Mengistu
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK.
| | - Ewnetu Firdawek Liyew
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Melkie Chernet
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Geremew Tasew
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Santiago Rayment Gomez
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | - Rosie Maddren
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | - Benjamin Collyer
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | - Ufaysa Anjulo
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Addis Ababa, Ethiopia
| | - Adugna Tamiru
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Addis Ababa, Ethiopia
| | - Kathryn Forbes
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | | | | | | | | | - Getachew Tollera
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Roy Anderson
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
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Mengsitu B, Liyew EF, Chernet M, Tasew G, Gomez SR, Maddren R, Collyer B, Anjulo U, Tamiru A, Forbes K, Mehari Z, Deribe K, Yadeta T, Salasibew M, Tollera G, Anderson R. Progress in controlling the transmission of schistosome parasites in Southern Ethiopia: the Geshiyaro Project in the Wolaita Zone. Parasit Vectors 2024; 17:113. [PMID: 38448997 PMCID: PMC10919034 DOI: 10.1186/s13071-024-06156-1] [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: 09/04/2023] [Accepted: 01/22/2024] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND This paper describes changes in the prevalence and intensity of schistosome parasite infections in a project integrating mass drug administration (MDA), water, sanitation, and hygiene (WaSH), and behavioral change interventions. METHODS The Geshiyaro Project comprises three intervention arms. Arm 1 is subdivided into "Arm 1 pilot" (one district) and Arm 1 (four other districts), both receiving integrated community-wide MDA with intensive WaSH interventions. Arm 2 involves 17 districts with community-wide MDA interventions, while Arm 3 serves as a control with school-based MDA interventions in three districts. A total of 150 individuals, stratified by age group, were randomly selected from each of the 45 sentinel sites. Arm sizes were 584 (Arm 1 pilot), 1636 (Arm 1), 2203 (Arm 2), and 2238 (Arm 3). Statistical tests were employed to compare infection prevalence and intensity across the different arms. RESULTS The prevalence of schistosome parasite infection ranged from 0% to 2.6% and from 1.7% to 25.7% across districts, employing the Kato-Katz (KK) and point-of-care circulating cathodic antigen (POC-CCA) diagnostics, respectively. The mean infection intensity level showed no marked difference between baseline and follow-up surveys when measured by KK, except in Arm 2 (t = 6.89, P < 0.0001). Infection prevalence decreased significantly in Arm 1 (t = 8.62, P < 0.0001), Arm 2 (t = 6.94, P < 0.0001), and Arm 3 (t = 8.83, P < 0.0001), but not in Arm 1 pilot (t = 1.69, P = 0.09) by POC-CCA, when trace was considered positive. The decrease was significant only in Arm 1 (t = 3.28, P = 0.0001) and Arm 2 (t = 7.62, P < 0.0001) when the trace was considered negative in POC-CCA. Arm 2 demonstrated a significant difference in difference (DID) compared to the control group, Arm 3, regardless of whether trace in POC-CCA was considered positive (DID = 3.9%, df = 8780, P = 0.025) or negative (DID = -5.2, df = 8780, P = 0.0004). CONCLUSIONS The prevalence of schistosomiasis was low when employing the KK diagnostic but moderate in some locations by the POC-CCA diagnostic. The infection level had decreased across all arms of the Geshiyaro study at mid-term of the 7-year project, but further efforts are needed to reduce the rate of parasite transmission based on the POC-CCA diagnostic scores.
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Affiliation(s)
- Birhan Mengsitu
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK.
| | - Ewnetu Firdawek Liyew
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Melkie Chernet
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Geremew Tasew
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Santiago Rayment Gomez
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | - Rosie Maddren
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | - Benjamin Collyer
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | - Ufaysa Anjulo
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Addis Ababa, Ethiopia
| | - Adugna Tamiru
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Addis Ababa, Ethiopia
| | - Kathryn Forbes
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
| | | | | | | | | | - Getachew Tollera
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Roy Anderson
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, UK
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Amrenova A, Baudin C, Ostroumova E, Stephens J, Anderson R, Laurier D. Intergenerational effects of ionizing radiation: review of recent studies from human data (2018-2021). Int J Radiat Biol 2024:1-11. [PMID: 38319708 DOI: 10.1080/09553002.2024.2309917] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 01/16/2024] [Indexed: 02/07/2024]
Abstract
PURPOSE The purpose of this paper was to conduct a review of the studies published between 2018 and 2022 to investigate radiation-related effects in the offspring of human individuals exposed to ionizing radiation. METHODS The search identified 807 publications, from which 9 studies were selected for detailed analysis to examine for effects in children whose parents were exposed to various types and doses of radiation. RESULTS The review does not yield substantial evidence supporting intergenerational effects of radiation exposure in humans. However, caution is required when interpreting the results due to limitations in the majority of the published articles. CONCLUSION This review, covering the period 2018-2022, serves as an extension of the previous systematic review conducted by Stephens et al. (2024), which encompassed the years 1988-2018. Together, these two papers offer a comprehensive overview of the available evidence regarding the intergenerational effects of parental pre-conceptional exposure to ionizing radiation. Overall, the findings do not provide strong evidence supporting a significant association between adverse (or other) outcomes in unexposed children and parental preconception radiation exposure.
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Affiliation(s)
- A Amrenova
- Health and Environment Division, Institute for Radiological Protection and Nuclear Safety (IRSN), Fontenay aux Roses, France
| | - C Baudin
- Health and Environment Division, Institute for Radiological Protection and Nuclear Safety (IRSN), Fontenay aux Roses, France
| | - E Ostroumova
- International Agency for Research on Cancer (IARC/WHO), Lyon, France
| | - J Stephens
- Centre for Health Effects of Radiological and Chemical Agents, Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK
| | - R Anderson
- Centre for Health Effects of Radiological and Chemical Agents, Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK
| | - D Laurier
- Health and Environment Division, Institute for Radiological Protection and Nuclear Safety (IRSN), Fontenay aux Roses, France
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7
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Rayment Gomez S, Maddren R, Liyew EF, Chernet M, Anjulo U, Tamiru A, Tollera G, Tasew G, Mengistu B, Collyer B, Forbes K, Anderson R. Spatial heterogeneity in mass drug administration from a longitudinal epidemiological study assessing transmission interruption of soil transmitted helminths in the Wolaita zone of southern Ethiopia (Geshiyaro Project). PLoS Negl Trop Dis 2024; 18:e0011947. [PMID: 38330143 PMCID: PMC10880954 DOI: 10.1371/journal.pntd.0011947] [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: 07/04/2023] [Revised: 02/21/2024] [Accepted: 01/28/2024] [Indexed: 02/10/2024] Open
Abstract
OBJECTIVES Deworming programmes of soil-transmitted helminths are generally monitored and evaluated by aggregating drug coverage and infection levels at a district level. However, heterogeneity in drug coverage at finer spatial scales means indicators may remain above thresholds for elimination as a public health problem or of transmission in some areas. This paper aims to highlight the misleading information that aggregating data at larger spatial scales can have for programme decision making. METHODS Drug coverage data from the Geshiyaro project were compared at two spatial scales with reference to the World Health Organisation's targets. District (woreda) and village (kebele) level were compared. The association between infection levels and drug coverage was analysed by fitting a weighted least-squares function to the mean intensity of infection (eggs per gram of faeces) against drug coverage. RESULTS The data show clearly that when the evaluation of coverage is aggregated to the district level, information on heterogeneity at a finer spatial scale is lost. Infection intensity decreases significantly (p = 0.0023) with increasing drug coverage. CONCLUSION Aggregating data at large spatial scales can result in prematurely ceasing deworming, prompting rapid infection bounce-back. There is a strong need to define context-specific spatial scales for monitoring and evaluating intervention programmes.
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Affiliation(s)
- Santiago Rayment Gomez
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Rosie Maddren
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Ewnetu Firdawek Liyew
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Melkie Chernet
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Ufaysa Anjulo
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | - Adugna Tamiru
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | - Getachew Tollera
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Geremew Tasew
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Birhan Mengistu
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Benjamin Collyer
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Kathryn Forbes
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Roy Anderson
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
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Collyer BS, Anderson R. The transmission dynamics of Strongyloides stercoralis and the impact of mass drug administration. Philos Trans R Soc Lond B Biol Sci 2024; 379:20220442. [PMID: 38008114 PMCID: PMC10676814 DOI: 10.1098/rstb.2022.0442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/30/2023] [Indexed: 11/28/2023] Open
Abstract
The epidemiology of Strongyloides stercoralis is briefly reviewed with an emphasis on cross section and longitudinal studies of infection prevalence stratified by age, performance of different diagnostic tools, mass drug administration (MDA) impact and estimates of key population parameters within the complex life cycle of the parasite that determine transmission intensity and response to control measures. The paucity of studies is highlighted, and gaps in current knowledge identified about the population biology of this very prevalent infection in tropical and sub-tropical regions around the world. A stochastic individual based stochastic model is described in part to highlight gaps in knowledge. The impact of repeated MDA is simulated to illustrate some aspects of transmission dynamics of this helminth infection. Specifically, the impact and bounce back times in either the intervals between treatment rounds, or post the cessation of treatment, depend critically on the magnitude of two distinct components of the basic reproductive number R0. The absence of data on these key components is highlighted, as is the value of studies of longitudinal cohorts of people in regions of endemic infection post rounds of MDA to record how infection levels bounce back post treatment at individual and population levels of study. This article is part of the Theo Murphy meeting issue 'Strongyloides: omics to worm-free populations'.
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Affiliation(s)
- Benjamin S. Collyer
- Department of Infectious Disease Epidemiology, Faculty of Medicine, Imperial College London, Praed Street, London W2 1PG, UK
| | - Roy Anderson
- Department of Infectious Disease Epidemiology, Faculty of Medicine, Imperial College London, Praed Street, London W2 1PG, UK
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Al-Jawabreh R, Anderson R, Atkinson LE, Bickford-Smith J, Bradbury RS, Breloer M, Bryant AS, Buonfrate D, Cadd LC, Crooks B, Deiana M, Grant W, Hallem E, Hedtke SM, Hunt V, Khieu V, Kikuchi T, Kounosu A, Lastik D, van Lieshout L, Liu Y, McSorley HJ, McVeigh P, Mousley A, Murcott B, Nevin WD, Nosková E, Pomari E, Reynolds K, Ross K, Streit A, Suleiman M, Tiberti N, Viney M. Strongyloides questions-a research agenda for the future. Philos Trans R Soc Lond B Biol Sci 2024; 379:20230004. [PMID: 38008122 PMCID: PMC10676812 DOI: 10.1098/rstb.2023.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/29/2023] [Indexed: 11/28/2023] Open
Abstract
The Strongyloides genus of parasitic nematodes have a fascinating life cycle and biology, but are also important pathogens of people and a World Health Organization-defined neglected tropical disease. Here, a community of Strongyloides researchers have posed thirteen major questions about Strongyloides biology and infection that sets a Strongyloides research agenda for the future. This article is part of the Theo Murphy meeting issue 'Strongyloides: omics to worm-free populations'.
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Affiliation(s)
| | - Roy Anderson
- Department of Infectious Disease Epidemiology, Imperial College London, London SW7 2BX, UK
| | - Louise E. Atkinson
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | | | | | - Minka Breloer
- Bernhard Nocht Institute for Tropical Medicine, Hamburg 20359, Germany
| | - Astra S. Bryant
- Department of Physiology and Biophysics, University of Washington, Seattle 98195, USA
| | - Dora Buonfrate
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Luke C. Cadd
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Bethany Crooks
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Michela Deiana
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Warwick Grant
- Department of Environment and Genetics, La Trobe University, Bundoora, Victoria 3083, Australia
| | - Elissa Hallem
- Department of Microbiology, Immunology, and Molecular Genetics, Molecular Biology Institute, University of California Los Angeles, Los Angeles 90095, USA
| | - Shannon M. Hedtke
- Department of Environment and Genetics, La Trobe University, Bundoora, Victoria 3083, Australia
| | - Vicky Hunt
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Virak Khieu
- National Centre for Parasitology, Entomology and Malaria Control, Cambodia Ministry of Health, Cambodia
| | - Taisei Kikuchi
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8652, Japan
| | - Asuka Kounosu
- Division of Parasitology, Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Dominika Lastik
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Lisette van Lieshout
- Leiden University Center for Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Yuchen Liu
- Department of Evolution, Ecology & Behaviour, University of Liverpool, Liverpool L69 7ZB, UK
| | - Henry J. McSorley
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | - Paul McVeigh
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Angela Mousley
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, UK
| | - Ben Murcott
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - William David Nevin
- Department of Infectious Diseases, Imperial College London, London SW7 2BX, UK
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK
| | - Eva Nosková
- Department of Botany and Zoology, Faculty of Science, Masaryk University, 611 37 Brno, Czech Republic
- Institute of Vertebrate Biology, Czech Academy of Sciences, 603 65 Brno, Czech Republic
| | - Elena Pomari
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Kieran Reynolds
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Kirstin Ross
- Environmental Health, College of Science and Engineering, Flinders University, South Australia 5042, Australia
| | - Adrian Streit
- Department of Integrative Evolutionary Biology, Max Planck Institute for Biology Tübingen, Tübingen 72076, Germany
| | - Mona Suleiman
- Life Sciences Department, University of Bath, Bath BA2 7AY, UK
| | - Natalia Tiberti
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Verona 37024, Italy
| | - Mark Viney
- Department of Evolution, Ecology & Behaviour, University of Liverpool, Liverpool L69 7ZB, UK
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Lipshitz M, Visser J, Anderson R, Nel DG, Smit T, Steel HC, Rapoport B. Emerging markers of cancer cachexia and their relationship to sarcopenia. J Cancer Res Clin Oncol 2023; 149:17511-17527. [PMID: 37906352 PMCID: PMC10657295 DOI: 10.1007/s00432-023-05465-9] [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: 06/08/2023] [Accepted: 10/06/2023] [Indexed: 11/02/2023]
Abstract
PURPOSE Emerging biomarkers of cancer cachexia and their roles in sarcopenia and prognosis are poorly understood. Baseline assessments of anthropometrics, sarcopenia, cachexia status and biomarkers of cachexia were measured in patients with advanced cancer and healthy controls. Thereafter, relationships of the biomarkers with cachexia and sarcopenia were explored. METHODS A prospective case-control design was used, including 40 patients with advanced cancer and 40 gender, age-matched controls. Bioelectrical impedance [skeletal muscle index (SMI)] and hand dynamometry [hand grip strength (HGS)] assessed sarcopenia and a validated tool classified cancer cachexia. Albumin, lymphocyte and platelet counts, haemoglobin, C-reactive protein (CRP), pro-inflammatory cytokines/chemokines and citrullinated histone H3 (H3Cit) were measured. RESULTS Patients had significantly lower SMI (6.67 kg/m2 versus 7.67 kg/m2, p = < 0.01) and HGS (24.42 kg versus 29.62 kg) compared to controls, with 43% being sarcopenic. Significant differences were found for albumin, lymphocyte and platelet counts, haemoglobin, CRP, and tumour necrosis factor α (TNFα), (p < 0.01). Interleukin (IL)-6 (p < 0.04), IL-8 (p = 0.02), neutrophil/lymphocyte ratio (NLR), p = 0.02, platelet/lymphocyte (PLR) ratio, p < 0.01 and systemic immune inflammatory index (SII), p < 0.01 differed significantly. No difference was observed for CXC motif chemokine ligand 5 [CXCL5 or epithelial neutrophil-activating peptide 78 (ENA78)] or H3Cit. Albumin and haemoglobin correlated negatively with total protein, skeletal muscle mass and SMI (all p < 0.01). The presence of sarcopenia associated significantly with albumin, haemoglobin and CRP. CONCLUSION Significant relationships and differences of haemoglobin, CRP and albumin supports future use of these biomarkers in cancer cachexia. CXCL5 and H3Cit as valuable biomarkers in cancer cachexia remains to be defined.
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Affiliation(s)
- Melanie Lipshitz
- Division of Human Nutrition, Stellenbosch University, Stellenbosch, South Africa.
- Melanie Levy Dietician, 1 Mid Way Road, Glenhazel, Johannesburg, South Africa.
| | - J Visser
- Division of Human Nutrition, Stellenbosch University, Stellenbosch, South Africa
| | - R Anderson
- Department of Immunology, University of Pretoria, Pretoria, South Africa
| | - D G Nel
- Centre for Statistical Consultation, Stellenbosch University, Stellenbosch, South Africa
| | - T Smit
- The Medical Oncology Centre of Rosebank, Johannesburg, South Africa
| | - H C Steel
- Department of Immunology, University of Pretoria, Pretoria, South Africa
| | - B Rapoport
- Department of Immunology, University of Pretoria, Pretoria, South Africa
- The Medical Oncology Centre of Rosebank, Johannesburg, South Africa
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11
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Anderson R. Measuring mortality arising from the Covid-19 pandemic and the impact of vaccination. Eur J Epidemiol 2023; 38:1119-1123. [PMID: 37924454 DOI: 10.1007/s10654-023-01066-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 11/06/2023]
Affiliation(s)
- Roy Anderson
- Department of Infectious Disease Epidemiology, Faculty of Medicine, Imperial College London, St Mary's Campus, Praed Street, London, W2 1PG, UK.
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Phillips AE, Ower AK, Mekete K, Liyew EF, Maddren R, Mengistu B, Anjulo U, Chernet M, Dunn JC, Mohammed H, Belay H, Gidey B, Tasew G, Tadesse G, Salasibew M, Tollera G, Anderson R. Baseline soil-transmitted helminth and schistosome infection in the Geshiyaro project, Ethiopia: A unique transmission interruption project using biometric fingerprinting for longitudinal individual analysis. PLoS Negl Trop Dis 2023; 17:e0011589. [PMID: 37851666 PMCID: PMC10615263 DOI: 10.1371/journal.pntd.0011589] [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: 08/25/2023] [Revised: 10/30/2023] [Accepted: 09/07/2023] [Indexed: 10/20/2023] Open
Abstract
BACKGROUND The Geshiyaro project aims to assess the feasibility of interrupting transmission of soil-transmitted helminths (STH) and schistosome (SCH) infection in the Wolaita zone of southern Ethiopia through high coverage community-wide mass drug administration (MDA), in combination with improved water, sanitation, and hygiene services and behaviour change communication delivered through the existing health care infrastructure. To accurately measure treatment coverage a population census was conducted enrolling individuals with biometric fingerprinting and barcoded ID cards. This paper details the baseline census and parasitology surveys conducted before the start of any interventions. METHODS The census was conducted in five of the 15 Wolaita districts between October 2018 and December 2019, enrolling all consenting participants from every household. Simultaneously, a cross-sectional parasitology survey was conducted in 130 out of 361 randomly selected communities from all 15 districts, with 100 individuals across all age groups (infant to adult) per community providing stool and urine for analysis by duplicate Kato-Katz and a point-of-care circulating cathodic antigen (POC-CCA) to test for Schistosoma mansoni and STH, and microhaematuria and urine filtration for Schistosoma haematobium. Of the 130 communities, 30 were randomly selected for annual, longitudinal parasitological monitoring, with 150 randomly selected individuals from infant to adult providing two days of stool and urine samples for analysis by the same diagnostic tests per community. RESULTS In total 97,919 households participated in the baseline census enrolling 466,071 individuals, with parasitological data obtained from 10,785 people. At baseline, 15.5% were infected with at least one STH species, with Ascaris lumbricoides (9.5%), followed by hookworm (7.2%) and Trichuris trichiura (1.8%). Substantial heterogeneity in STH prevalence was observed between communities ranging from 0% to 61% where most infections were low intensity. Schistosoma mansoni infection was the dominant schistosome infection (0.85% by Kato-Katz and 13.3% by POC-CCA trace negative and 21.5% trace positive), with few Schistosoma haematobium infections identified (2.77% haematuria positive and 0.13% positive by urine filtration). CONCLUSIONS While the national control program in Ethiopia has made good progress in reducing prevalence of STH and SCH in Wolaita since it was launched in 2015, there remain areas of persistent infection suggesting the existence of environmental or behavioural risk factors that contribute to ongoing transmission. This project aims to identify the most efficient intervention strategies to reduce community burden and reach interruption of transmission.
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Affiliation(s)
- Anna E. Phillips
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, St Mary’s Campus, London, United Kingdom
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | - Alison K. Ower
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, St Mary’s Campus, London, United Kingdom
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | | | | | - Rosie Maddren
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, St Mary’s Campus, London, United Kingdom
| | - Birhan Mengistu
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, St Mary’s Campus, London, United Kingdom
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | - Ufaysa Anjulo
- Children’s Investment Fund Foundation, London, United Kingdom
| | - Melkie Chernet
- Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Julia C. Dunn
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, St Mary’s Campus, London, United Kingdom
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | | | - Habtamu Belay
- Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | | | - Geremew Tasew
- Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | | | | | | | - Roy Anderson
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, St Mary’s Campus, London, United Kingdom
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
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13
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Maddren R, Phillips A, Rayment Gomez S, Forbes K, Collyer BS, Kura K, Anderson R. Individual longitudinal compliance to neglected tropical disease mass drug administration programmes, a systematic review. PLoS Negl Trop Dis 2023; 17:e0010853. [PMID: 37459369 PMCID: PMC10374057 DOI: 10.1371/journal.pntd.0010853] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 07/27/2023] [Accepted: 06/05/2023] [Indexed: 07/28/2023] Open
Abstract
Repeated distribution of preventative chemotherapy (PC) by mass drug administration forms the mainstay of transmission control for five of the 20 recognised neglected tropical diseases (NTDs); soil-transmitted helminths, schistosomiasis, lymphatic filariasis, onchocerciasis and trachoma. The efficiency of such programmes is reliant upon participants swallowing the offered treatment consistently at each round. This is measured by compliance, defined as the proportion of eligible participants swallowing treatment. Individually linked longitudinal compliance data is important for assessing the potential impact of MDA-based control programmes, yet this accurate monitoring is rarely implemented in those for NTDs. Longitudinal compliance data reported by control programmes globally for the five (PC)-NTDs since 2016 is examined, focusing on key associations of compliance with age and gender. PubMed and Web of Science was searched in January 2022 for articles written in English and Spanish, and the subsequent extraction adhered to PRISMA guidelines. Study title screening was aided by Rayyan, a machine learning software package. Studies were considered for inclusion if primary compliance data was recorded for more than one time point, in a population larger than 100 participants. All data analysis was conducted in R. A total of 89 studies were identified containing compliance data, 57 were longitudinal studies, of which 25 reported individually linked data reported by varying methods. The association of increasing age with the degree of systematic treatment was commonly reported. The review is limited by the paucity of data published on this topic. The varying and overlapping terminologies used to describe coverage (receiving treatment) and compliance (swallowing treatment) is reviewed. Consequently, it is recommended that WHO considers clearly defining the terms for coverage, compliance, and longitudinal compliance which are currently contradictory across their NTD treatment guidelines. This review is registered with PROSPERO (number: CRD42022301991).
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Affiliation(s)
- Rosie Maddren
- Department of Infectious Disease Epidemiology, Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
| | - Anna Phillips
- Department of Infectious Disease Epidemiology, Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
- FHI 360, Durham, North Carolina, United States of America
| | - Santiago Rayment Gomez
- Department of Infectious Disease Epidemiology, Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
| | - Kathryn Forbes
- Department of Infectious Disease Epidemiology, Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
- London Centre for Neglected Tropical Disease Research (LCNTDR), Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
| | - Benjamin S Collyer
- Department of Infectious Disease Epidemiology, Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
| | - Klodeta Kura
- Department of Infectious Disease Epidemiology, Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
| | - Roy Anderson
- Department of Infectious Disease Epidemiology, Imperial College London, Saint Mary's Campus, Norfolk Place, London, United Kingdom
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Maddren R, Phillips A, Ower A, Landeryou T, Mengistu B, Anjulo U, Firdawek E, Negussu N, Anderson R. Correction: Soil-transmitted helminths and schistosome infections in Ethiopia: a systematic review of progress in their control over the past 20 years. Parasit Vectors 2023; 16:203. [PMID: 37328904 DOI: 10.1186/s13071-023-05815-z] [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: 06/18/2023] Open
Affiliation(s)
- Rosie Maddren
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, UK.
| | - Anna Phillips
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Alison Ower
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Toby Landeryou
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | | | - Ufaysa Anjulo
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | - Ewnetu Firdawek
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Nebiyu Negussu
- Neglected Tropical Diseases, Federal Ministry of Health, Addis Ababa, Ethiopia
| | - Roy Anderson
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
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15
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Sheahan W, Anderson R, Aruldas K, Avokpaho E, Galagan S, Goodman J, Houngbegnon P, Israel GJ, Janagaraj V, Kaliappan SP, Means AR, Morozoff C, Pearman E, Ramesh RM, Roll A, Schaefer A, Simwanza J, Witek-McManus S, Ajjampur SSR, Bailey R, Ibikounlé M, Kalua K, Luty AJF, Pullan R, Walson JL, Ásbjörnsdóttir KH. Overestimation of school-based deworming coverage resulting from school-based reporting. PLoS Negl Trop Dis 2023; 17:e0010401. [PMID: 37036890 PMCID: PMC10118084 DOI: 10.1371/journal.pntd.0010401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/20/2023] [Accepted: 11/21/2022] [Indexed: 04/11/2023] Open
Abstract
BACKGROUND Soil Transmitted Helminths (STH) infect over 1.5 billion people globally and are associated with anemia and stunting, resulting in an annual toll of 1.9 million Disability-Adjusted Life Years (DALYs). School-based deworming (SBD), via mass drug administration (MDA) campaigns with albendazole or mebendazole, has been recommended by the World Health Organization to reduce levels of morbidity due to STH in endemic areas. DeWorm3 is a cluster-randomized trial, conducted in three study sites in Benin, India, and Malawi, designed to assess the feasibility of interrupting STH transmission with community-wide MDA as a potential strategy to replace SBD. This analysis examines data from the DeWorm3 trial to quantify discrepancies between school-level reporting of SBD and gold standard individual-level survey reporting of SBD. METHODOLOGY/PRINCIPAL FINDINGS Population-weighted averages of school-level SBD calculated at the cluster level were compared to aggregated individual-level SBD estimates to produce a Mean Squared Error (MSE) estimate for each study site. In order to estimate individual-level SBD coverage, these MSE values were applied to SBD estimates from the control arm of the DeWorm3 trial, where only school-level reporting of SBD coverage had been collected. In each study site, SBD coverage in the school-level datasets was substantially higher than that obtained from individual-level datasets, indicating possible overestimation of school-level SBD coverage. When applying observed MSE to project expected coverages in the control arm, SBD coverage dropped from 89.1% to 70.5% (p-value < 0.001) in Benin, from 97.7% to 84.5% (p-value < 0.001) in India, and from 41.5% to 37.5% (p-value < 0.001) in Malawi. CONCLUSIONS/SIGNIFICANCE These estimates indicate that school-level SBD reporting is likely to significantly overestimate program coverage. These findings suggest that current SBD coverage estimates derived from school-based program data may substantially overestimate true pediatric deworming coverage within targeted communities. TRIAL REGISTRATION NCT03014167.
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Affiliation(s)
- William Sheahan
- Malaria and Neglected Tropical Diseases, PATH, Seattle, Washington, United States of America
| | - Roy Anderson
- School of Public Health, Faculty of Medicine, Imperial College, London, United Kingdom
| | - Kumudha Aruldas
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | | | - Sean Galagan
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
| | - Jeanne Goodman
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
| | | | - Gideon John Israel
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Venkateshprabhu Janagaraj
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | | | - Arianna Rubin Means
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
| | - Chloe Morozoff
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
| | - Emily Pearman
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
| | - Rohan Michael Ramesh
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Amy Roll
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
| | - Alexandra Schaefer
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
| | - James Simwanza
- Blantyre Institute for Community Outreach, Lions Sight First Eye Hospital, Blantyre, Malawi
| | - Stefan Witek-McManus
- Department of Disease Control, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Sitara S R Ajjampur
- The Wellcome Trust Research Laboratory, Division of Gastrointestinal Sciences, Christian Medical College, Vellore, India
| | - Robin Bailey
- Blantyre Institute for Community Outreach, Lions Sight First Eye Hospital, Blantyre, Malawi
| | | | - Khumbo Kalua
- Blantyre Institute for Community Outreach, Lions Sight First Eye Hospital, Blantyre, Malawi
| | - Adrian J F Luty
- Université de Paris, Institut de Recherche pour le Développement, MERIT, Paris, France
| | - Rachel Pullan
- Department of Disease Control, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Judd L Walson
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Medicine (Infectious Diseases) and Pediatrics, University of Washington, Seattle, Washington, United States of America
| | - Kristjana Hrönn Ásbjörnsdóttir
- The DeWorm3 Project, University of Washington, Seattle, Washington, United States of America
- Centre of Public Health Sciences, University of Iceland, Reykjavík, Iceland
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16
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Hixson H, McCullough S, Haywood S, Shoemaker C, Donohue L, Floyd S, Anderson R, Mannem H. Tolerability of Posaconazole as Fungal Prophylaxis in Lung Transplant Patients Compared to Voriconazole. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1374] [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: 04/05/2023] Open
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17
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Rayment Gomez S, Maddren R, Liyew EF, Chernet M, Anjulo U, Tamiru A, Mengitsu B, Forbes K, Collyer B, Salasibew M, Anderson R. Predisposition to soil-transmitted helminth reinfection after four rounds of mass drug administration: results from a longitudinal cohort in the Geshiyaro project, a transmission elimination feasibility study in the Wolaita zone of southern Ethiopia. Trans R Soc Trop Med Hyg 2023:7080902. [PMID: 36939014 DOI: 10.1093/trstmh/trad007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 02/01/2023] [Accepted: 02/23/2023] [Indexed: 03/21/2023] Open
Abstract
BACKGROUND Current WHO strategies for reaching soil-transmitted helminths (STH) elimination as a public health problem excludes treating certain adult populations in endemic areas, creating infection reservoirs that drive 'bounce back' of STH infection to pretreatment levels post-mass drug administration (MDA). Predisposition is a widespread, but poorly understood phenomena among helminth infections where individuals are predisposed to reinfection after repeated treatments. METHODS This analysis uses Geshiyaro project data, an STH control programme exploring transmission interruption by community-wide MDA and enhanced water, sanitation and hygiene during 2019-2023. Parasitological survey data from longitudinal cohorts are analysed using Kendall's Tau-b rank correlation to assess the evidence for predisposition to light or heavy infection between four consecutive rounds of MDA. RESULTS Correlation analyses revealed the strongest evidence for predisposition to heavy or light Ascaris lumbricoides infection was between survey 1 and 2 (Tau-b 0.29; p<0.001). Overall patterns were not observed for Trichuris trichiura or hookworm infections, however, some significant and notable correlations were recorded for some stratifications and time points. CONCLUSIONS Evidence for predisposition in endemic settings in southern Ethiopia with low STH prevalence suggests that more targeted approaches to MDA in those predisposed to infection may be a sensible control strategy if cheap, point of care diagnostics are available.
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Affiliation(s)
- Santiago Rayment Gomez
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London W2 1NY, UK
| | - Rosie Maddren
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London W2 1NY, UK
| | - Ewnetu Firdawek Liyew
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ayat Zone 8, Ethiopia
| | - Melkie Chernet
- Bacterial, Parasitic and Zoonotic Disease Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ayat Zone 8, Ethiopia
| | - Ufaysa Anjulo
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | - Adugna Tamiru
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | - Birhan Mengitsu
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London W2 1NY, UK
| | - Kathryn Forbes
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London W2 1NY, UK
| | - Benjamin Collyer
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London W2 1NY, UK
| | | | - Roy Anderson
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London W2 1NY, UK
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18
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Stewart V, Bhatti F, Chen W, Vitiello P, Agbaga M, Chauhan N, Anderson R. Effect of maternal dietary deuterated docosahexaenoic acid intake on oxygen-induced retinopathy in mouse pups. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00729-2] [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: 01/28/2023]
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19
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Raghuraman S, Richards E, Morgan-Trimmer S, Clare L, Anderson R, Goodwin V, Allan L. 1354 USING REALIST PROGRAMME THEORY TO DESIGN A NEW INTERVENTION FOR IMPROVING RECOVERY AFTER DELIRIUM. Age Ageing 2023. [DOI: 10.1093/ageing/afac322.034] [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: 01/18/2023] Open
Abstract
Abstract
Introduction
People who recover poorly after delirium are likely to require an increased level of care. It is presently unknown whether interventions to improve recovery after delirium are effective and cost-effective. This research aimed to develop a programme theory to inform the design of an intervention to improve recovery after delirium.
Method
A rapid realist review of literature was conducted to develop an initial programme theory. Following this, a qualitative investigation of the perceived rehabilitation needs of older people who have experienced delirium during a hospital stay was conducted via semi-structured interviews with 41 key stakeholders (older people (5), carers (12), and healthcare professionals (24)). Data were analysed using a realist approach to identify what works, for whom, and in what context. This was deductively informed by the initial programme theory while also employing an inductive analysis to identify novel insights. Through an iterative, retroductive process, context-mechanism-outcome configurations (CMOCs) were coded to reflect stakeholders’ views to refine the programme theory.
Results
The initial programme theory highlighted the importance of cognitive and physical rehabilitation and emotional support as key domains of recovery. New CMOCs included optimisation of good medical care to manage delirium and monitoring and management of underlying medical conditions to promote recovery. Others included developing educational resources and support networks for older people and their carers to aid sense-making, and encouraging social interaction to reduce isolation and empower independent functioning. These recovery elements should be addressed in a person-centred manner that is tailored to individual needs and preferences, engages carers, integrates intervention goals into daily functioning, and ensures continuity of care.
Conclusion
A refined programme theory was developed and is currently being used to design a manualised intervention to improve recovery after delirium. The acceptability of the intervention will be tested in a multi-centre, single-arm feasibility study.
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Affiliation(s)
| | - E Richards
- University of Exeter Medical School
- Royal Devon and Exeter NHS Trust
| | | | - L Clare
- University of Exeter Medical School
- NIHR Applied Research Collaboration South-West Peninsula
| | | | - V Goodwin
- University of Exeter Medical School
- NIHR Applied Research Collaboration South-West Peninsula
| | - L Allan
- University of Exeter Medical School
- NIHR Applied Research Collaboration South-West Peninsula
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20
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Phillips AE, Ower AK, Mekete K, Liyew EF, Maddren R, Belay H, Chernet M, Anjulo U, Mengistu B, Salasibew M, Tasew G, Anderson R. Association between water, sanitation, and hygiene access and the prevalence of soil-transmitted helminth and schistosome infections in Wolayita, Ethiopia. Parasit Vectors 2022; 15:410. [DOI: 10.1186/s13071-022-05465-7] [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] [Received: 01/16/2022] [Accepted: 09/03/2022] [Indexed: 11/06/2022] Open
Abstract
Abstract
Background
The Geshiyaro project is a 5-year intervention to assess the impact of community- and school-based water, sanitation, and hygiene (WaSH) interventions on reducing infection with soil-transmitted helminths (STH) and schistosome parasites in combination with deworming in Wolayita zone, Ethiopia.
Methods
A population-based, cross-sectional census and parasitological mapping activity was conducted between 2018 and 2019. Individuals in the census were identified using either a registered study ID card or biometric fingerprint to enable linkage of their household WaSH data with baseline STH and schistosome prevalence for risk analysis.
Results
Prevalence of STH was 15.5% for any STH species, 9.47% for Ascaris lumbricoides, 1.78% for Trichuris trichiura, and 7.24% for hookworm. Intestinal schistosomiasis (Schistosoma mansoni) infection prevalence was 0.85% by Kato Katz, 21.6% by POC-CCA trace positive (Tr +), and 13.3% trace negative (Tr-). Microhaematuria was 2.77%, with 0.13% of people examined with S. haematobium eggs detected by urine filtration. At the household level, increased (> 30 min) time taken to collect drinking water, sharing a latrine, and lack of handwashing facilities were all associated with a greater risk of A. lumbricoides, hookworm, and S. mansoni infection. Not disposing of infant stool at the household and clothes washing/recreational freshwater contact were significantly associated with higher risk of schistosomiasis infection. Aggregating WaSH data at the community level showed odds of A. lumbricoides, hookworm, and T. trichiura infection were significantly lower as both community sanitation coverage and access to improved drinking water improved.
Conclusions
The principal finding of this study is that lack of access to WaSH, such as improved drinking water and shared toilet and hand-washing facilities, were linked to an increased risk of infection with STH and schistosome parasites. These associations are difficult to establish at an individual household level because of wide variability in access between houses but are detectable when coverage is aggregated at the community level. Maintenance of WaSH facilities as well as increased access within the whole community is important in influencing the community-wide prevalence of infection with STH and schistosome parasites.
Graphical Abstract
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21
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Landeryou T, Maddren R, Rayment Gomez S, Kalahasti S, Liyew EF, Chernet M, Mohammed H, Wuletaw Y, Truscott J, Phillips AE, Ower A, Forbes K, Anjulo U, Mengistu B, Tasew G, Salasibew M, Anderson R. Longitudinal monitoring of prevalence and intensity of soil-transmitted helminth infections as part of community-wide mass drug administration within the Geshiyaro project in the Bolosso Sore district, Wolaita, Ethiopia. PLoS Negl Trop Dis 2022; 16:e0010408. [PMID: 36121895 PMCID: PMC9521932 DOI: 10.1371/journal.pntd.0010408] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 04/12/2022] [Revised: 09/29/2022] [Accepted: 08/19/2022] [Indexed: 11/18/2022] Open
Abstract
Mass drug administration (MDA), targeted at school-aged children (SAC) is recommended by the World Health Organization for the control of morbidity induced by soil-transmitted helminth (STH) infection in endemic countries. However, MDA does not prevent reinfection between treatment rounds, and research suggests that only treating SAC will not be sufficient to interrupt transmission of STH. In countries with endemic infection, such as Ethiopia, the coverage, community-groups targeted, and rates of reinfection will determine how effective MDA is in suppressing transmission in the long-term. In this paper, individually-linked longitudinal data from three epidemiological STH surveys conducted between November 2018 and November 2020 in the Wolaita region of Ethiopia are analysed to determine how STH prevalence and intensity changes according to individual level treatment data collected over two rounds of MDA. This study demonstrates that while community-wide MDA successfully reduces overall infection intensity across the villages treated, the observed levels of non-compliance to treatment by individuals acts to maintain levels of parasite abundance whereby transmission interruption is not possible at to, despite reasonable levels of MDA coverage in the communities studied (ranging from 65% to 84% of the village populations). This quantifies with substantial data the often-postulated difference between coverage (accepting treatment) and compliance (swallowing of treatment), the latter impacting the former to a previously unquantified level. The paper highlights the need to focus treatment to partially treated, or never treated groups of individuals within existing community wide MDA control activities to interrupt the transmission of STH, and to reduce the basic reproductive number, R0, of the parasites to less than unity in value.
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Affiliation(s)
- Toby Landeryou
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
- * E-mail:
| | - Rosie Maddren
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Santiago Rayment Gomez
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Suprabhath Kalahasti
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Ewnetu Firdawek Liyew
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Melkie Chernet
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Hussein Mohammed
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Yonas Wuletaw
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - James Truscott
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Anna E. Phillips
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Alison Ower
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Kathryn Forbes
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
| | - Ufaysa Anjulo
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | - Birhan Mengistu
- Children’s Investment fund Foundation, London, United Kingdom
| | - Geremew Tasew
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | | | - Roy Anderson
- London Centre for Neglected Tropical Disease Research, Department of Infectious Disease Epidemiology, Faculty of Medicine, St Marys Campus, Imperial College London, London, United Kingdom
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22
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Rapoport B, Malinga N, Siwele S, Steel H, Kwofie L, Meyer P, Smit T, Anderson R, Kgokolo M. 870P Systemic levels of the soluble co-inhibitory and co-stimulatory immune checkpoint molecules in basal cell carcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.996] [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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23
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Abdelhalim MA, Patel A, Moquet J, Smith A, Badie C, Anderson R, Ainsbury E, Modarai B. O003 Radiation-related chromosomal aberrations observed in high volume endovascular operators performing X-ray guided surgery. Br J Surg 2022. [DOI: 10.1093/bjs/znac242.003] [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: 11/05/2022]
Abstract
Abstract
Introduction
The biological effects of chronic, low dose radiation, to which operators performing fluoroscopy-guided procedures are exposed, are unknown. We have previously demonstrated acute DNA damage/repair in lymphocytes from operators performing fluoroscopy-guided endovascular aneurysm repair (EVAR), but these markers normalised after 24 hours and did not inform on the residual accumulated effects of chronic radiation exposure. In the present study cytogenetic techniques were used to examine for chromosomal aberrations in endovascular operators.
Methods
Peripheral blood lymphocytes were isolated from high volume endovascular operators performing EVAR and age-matched radiation naïve general surgeons as controls. Giemsa staining was used to visualise the full complement of chromosomes and all dicentrics, where 2 centromeres are present in a single chromosome, were identified. The genome was analysed for abnormal exchanges of genetic material between chromosomes using multiplex fluorescence in situ hybridisation (mFISH).
Results
Lymphocytes from 18 operators (12 exposed, 6 controls) were analysed. A higher frequency of dicentric chromosomes were found in exposed operators compared with controls (0.0011 vs 0.0004, respectively, P=0.002) after examining 54,000 lymphocytes. Twice as many complex chromosome rearrangements were seen in endovascular operators compared with controls (0.48% vs 0.24%). Aneuploidy, the abnormal loss of chromosomes, was more frequent in endovascular operators with a median difference of 0.35 per chromosome (P=0.004).
Conclusion
We have found a higher frequency of chromosomal aberrations in endovascular operators compared with radiation naïve colleagues. This justifies further individual biological profiling for genomic instability and personalised radiation risk assessment.
Take-home message
Radiation-related DNA damage occurs in endovascular operators despite current radiation protection measures. Biological dosimetry could be a useful tool, allowing personalised risk assessment.
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Affiliation(s)
- MA Abdelhalim
- Academic Department of Vascular Surgery, School of Cardiovascular Medicine and Sciences, King’s College London, BHF Centre of Excellence at Guy’s and St Thomas’ NHS Foundation Trust , London , UK
| | - A Patel
- Academic Department of Vascular Surgery, School of Cardiovascular Medicine and Sciences, King’s College London, BHF Centre of Excellence at Guy’s and St Thomas’ NHS Foundation Trust , London , UK
| | - J Moquet
- Public Health England Centre for Radiation , Chemical and Environmental Threats and Hazards, Chilton, Oxfordshire
| | - A Smith
- Academic Department of Vascular Surgery, School of Cardiovascular Medicine and Sciences, King’s College London, BHF Centre of Excellence at Guy’s and St Thomas’ NHS Foundation Trust , London , UK
| | - C Badie
- Public Health England Centre for Radiation , Chemical and Environmental Threats and Hazards, Chilton, Oxfordshire
| | - R Anderson
- Centre for Health Effects of Radiological and Chemical Agents, Brunel University
| | - E Ainsbury
- Public Health England Centre for Radiation , Chemical and Environmental Threats and Hazards, Chilton, Oxfordshire
| | - B Modarai
- Academic Department of Vascular Surgery, School of Cardiovascular Medicine and Sciences, King’s College London, BHF Centre of Excellence at Guy’s and St Thomas’ NHS Foundation Trust , London , UK
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24
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Royster G, Anderson R. P-422 A retrospective cohort study on the usefulness of Endometrial Receptivity Analysis (ERA) prior to a gestational carriers’ (GC) first euploid frozen embryo transfer (FET). Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.399] [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: 11/13/2022] Open
Abstract
Abstract
Study question
Does determination of endometrial receptivity by ERA improve the outcome of FET for GC prior to their first FET using a euploid embryo?
Summary answer
GC with ERA prior to FET had 92.3% implantation and 84.6% live birth rate (LBR) compared to 81.5% implantation rate and 72.2% LBR without ERA.
What is known already
The endometrial window of implantation is approximately 24 hours wide with a complex interaction of autocrine, paracrine and endocrine factors. Successful embryo implantation involves a 3-step process of apposition, adhesion and invasion of an embryo into a receptive endometrium. The ERA was developed using the expression profile of 248 genes using Next Generation Sequencing to determine if the endometrium is receptive, early receptive, late receptive, pre-receptive or post-receptive to objectively determine the optimal timing of progesterone exposure prior to embryo transfer. Some studies have shown statistically significant improvements in live birth rates while other studies have shown no difference.
Study design, size, duration
A retrospective cohort study compared the implantation and live birth rates of 26 GC who chose to have a personalized embryo transfer using their ERA profile vs. 54 GC who used our standard FET protocol without an ERA prior to their first euploid FET. All GC having their first FET from January 2018 – December 2020 were included.
Participants/materials, setting, methods
A single private practice fertility clinic performed 80 euploid FET cycles on first-time GC from January 2018 – December 2020. All intended parents were offered the opportunity to complete an ERA for their GC prior to their first FET cycle. Implantation and live birth rates were calculated for all FET cycles using a GC for the first time with associated p – values.
Main results and the role of chance
GC were 22 – 38 years old with a mean age of 30 and a history of 2.4 previous spontaneous births prior to their first FET. GC who used a standard FET protocol with 5 days of progesterone (P + 5) exposure before FET had an implantation rate of 81.5% and a live birth rate of 72.2%, compared to an implantation rate of 92.3% and a live birth rate of 84.6% for GC who used a personalized embryo transfer protocol based on their ERA profile (p = 0.17). 19.2% of GC had a receptive endometrial profile using P + 5, 26.9% of GC were pre-receptive needing P + 5.5 and 53.8% needed P + 6. No GC were found to have a post-receptive endometrial profile (P + 4 or P + 4.5). Our retrospective cohort study was not powered to find a statistically significant difference, though our data trended towards an improvement in both implantation and live birth rates by over 10% if a GC were to complete an ERA prior to her first FET.
Limitations, reasons for caution
Implantation and live birth rates for the clinic during the study period were 75% and 68% respectively using euploid embryos. Our high baseline implantation and live birth rates, coupled with low numbers of patients included in this study, may make these results less generalizable to the IVF population at large.
Wider implications of the findings
It is controversial to recommend an ERA to a good prognosis patient such as a GC without a prior unsuccessful euploid FET. These results should prompt further study to confirm our findings with a larger prospective randomized controlled trial of gestational carriers using ERA profiles prior to their first FET.
Trial registration number
N/A
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Affiliation(s)
- G.D Royster
- Southern California Center for Reproductive Medicine, Reproductive Endocrinology and Infertility , Newport Beach, U.S.A
| | - R Anderson
- Southern California Center for Reproductive Medicine, Reproductive Endocrinology and Infertility , Newport Beach, U.S.A
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25
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Bailie E, Grosbois J, Jack S, Hawthorn R, Watson N, Telfer E, Anderson R. P-458 Testosterone treatment induces changes in stromal collagen and elastin content of the ovaries of transgender men. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.430] [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: 11/13/2022] Open
Abstract
Abstract
Study question
Does gender-affirming testosterone therapy alter the composition of the extra-cellular matrix (ECM) within the ovarian stroma and subsequently affect follicle activation in vivo
Summary answer
Ovarian stroma of trans men is more collagenous and less elastic, indicating fibrotic change. This may affect in vivo follicle growth activation
What is known already
Changes in the ovarian stroma have been demonstrated in the ovaries of transgender men taking testosterone, including thickening of the tunica albuginea, stromal cell hyperplasia and stromal cell luteinisation. Ovaries of trans men also have increased cortical stiffness. These changes are similar to those seen in female patients with PCOS and in physiological ovarian aging, which has been attributed to accumulation of collagen in the ECM. Increasing stiffness of the supportive follicular microenvironment has been shown to reduce follicle growth activation in vitro
Study design, size, duration
Whole ovaries were obtained from transgender men (mean age 27.6 ± 1.7 years, n = 8) with informed consent at oophorectomy. All patients had received 1000mg testosterone undecanoate intramuscularly at 12-16 week intervals for a minimum of 18 months pre-operatively (range 18 months-10 years). Cortical tissue was dissected into small fragments (≈1x1x0.5mm) and fixed for histological and immunohistochemical analysis. Testosterone-treated ovaries were compared to cortical biopsies from age-matched healthy women obtained at caesarean section (mean age 31.8±1.5, n = 8).
Participants/materials, setting, methods
Follicle number, classification of developmental stage, non-growing follicle density (NGFD) and stromal cell density were evaluated by histological analysis of ovarian cortical tissue. Sections were stained with Picrosirius red (PSR) to analyse total collagen content using brightfield microscopy. Polarised light was also used to analyse the collagen birefringence, which allows quantification of collagen fibre thickness into thick, medium or thin. Total elastin content was evaluated using immunofluorescence.
Main results and the role of chance
4526 follicles were analysed. Transgender ovary showed a higher proportion of non-growing follicles found compared to control (93.9±1.2% vs 84.6±1.5% p < 0.05): the proportions of primary (4.7±0.9% vs 10.6±1.5%, p = 0.2) and secondary (1.4±0.4% vs 4.6±0.7%, p = 0.1) follicles tended to be lower. Stromal cell density was significantly higher in transgender ovarian cortex than control (2.5±0.1 x106cells/mm3 vs 1.7±0.1 x106cells/mm3), indicating stromal cell hyperplasia. Combined data from control and transgender groups showed a positive correlation between NGFD and stromal density (r = 0.64, p = 0.01).
Transgender ovary had a higher total collagen content (77.2±1.2%) compared to control (31.3±3.3%, p < 0.005). Analysis of collagen birefringence showed that transgender ovaries had similar quantities of thick collagen fibres (0.014±0.005 vs 0.010±0.009, p = 0.1), more medium thickness collagen fibres (45.1±6.6%vs 14.4±4.9%, p < 0.05) and fewer thinner fibres (41.5±9.6% vs 27.7±2.8%, p = 0.08) than control. The total elastin content in transgender ovaries was lower than control (1.3±0.1% vs 3.6±0.6%, p < 0.005) and subsequently, the collagen/elastin ratio was significantly higher (63.1±7.9 vs 10±1.3, p < 0.005).
Limitations, reasons for caution
The impact of these findings on in vivo follicle growth are unclear. The effect of duration of testosterone treatment has not investigated.
Wider implications of the findings
More collagenous, less elastic ovarian stroma in trans men indicates fibrotic change; these findings are similar to women with PCOS and with reproductive ageing. These stromal changes may alter follicle growth activation and may contribute value to our understanding of the regulation of follicle function in a range of conditions.
Trial registration number
nil
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Affiliation(s)
- E Bailie
- University of Edinburgh, reproductive biology , Edinburgh, United Kingdom
| | - J Grosbois
- University of Edinburgh, reproductive biology , Edinburgh, United Kingdom
| | - S Jack
- NHS Lothian, Gynaecology , Edinburgh, United Kingdom
| | - R Hawthorn
- Queen Elizabeth University Hospital, Gynaecology , Glasgow, United Kingdom
| | - N Watson
- NHS, gynaecology , London, United Kingdom
| | - E Telfer
- University of Edinburgh, reproductive biology , Edinburgh, United Kingdom
| | - R Anderson
- University of Edinburgh, reproductive biology , Edinburgh, United Kingdom
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26
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Papanikolaou N, Coulden A, Parker N, Lee S, Kelly C, Anderson R, Rees A, Cox J, Dhillo W, Meeran K, Al-Memar M, Karavitaki N, Jayasena C. P-698 Pituitary functioning gonadotroph adenomas (FGA)-induced ovarian hyperstimulation syndrome (OHSS): results from tertiary neuroendocrine centres in the UK. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.647] [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: 11/13/2022] Open
Abstract
Abstract
Study question
There are no published series of OHSS due to FGA. What FGA features should clinicians look for during OHSS, and what treatments are effective?
Summary answer
FGA tumour size is always >10mm. Other pituitary hormones may be deficient. Surgical resection of FGA is an effective treatment for OHSS.
What is known already
Pituitary adenomas affect 1:1000 adults and are classified as functioning or non-functioning. Non-functioning pituitary adenomas do not secrete hormones, but most commonly stain histologically gonadotroph cells. Functional pituitary adenomas secrete hormones such as prolactin causing prolactinoma. However, it is rare for a pituitary tumour to cause clinical features of excessive gonadotrophins (functioning gonadotroph adenoma; FGA).
Single case reports, but no case series, have been published on the presentation of FGA-induced OHSS in women.
Surgical excision of adenomas has been reported to cause remission of symptoms, though systematic data are lacking owing to rarity of these tumours.
Study design, size, duration
National case series from tertiary neuroendocrine units in England, Wales and Scotland.
Participants/materials, setting, methods
Eight high-volume pituitary endocrine tertiary units within England, Wales and Scotland audited their records for any cases of FGA-induced OHSS; only seven patients have been identified to date. In all cases, there had been no recent exposure to assisted reproductive technologies (ART) or drugs known to induce OHSS including gonadotrophins or selective oestrogen receptor modulators (SERMS).
Main results and the role of chance
Seven cases of FGA were identified with mean age 31.6 years (range 16-48) at diagnosis. Two-of-seven women presented acutely unwell with abdominal pain, distention and palpable mass requiring oophorectomy for ovarian torsion/ruptured ovarian cyst. The remaining five women presented with abdominal pain (n = 2), thyrotoxicosis (n = 1), menstrual irregularities/galactorrhoea (n = 1) and visual disturbances (n = 1). All women experienced intermittent pelvic pain during medical attendance. Pelvic ultrasound demonstrated enlarged multiseptated ovaries (volume ranging 27-442cm3). Ascites was noted in one woman. Six women had visual field defects due to optic chiasm compression on formal assessment. Median FSH was 26.10 u/L (8.3-33), but LH was <2.5 u/L in all cases. Estradiol (E2) far exceeded the reference range in 5/7 women (2990 to > 18000pmol/L);E2 was at the upper limit of normal in the remaining 2/7 women (960-1450pmol/L). Hyperprolactinaemia, hyperthyroidism and other pituitary hormones deficiency were noted in 6/7, 1/7 and 4/7 women respectively. All FGAs were macroadenomas with diameters ranging 16-48mm. Two patients were administered a somatostatin analogue prior to surgery, but FSH, E2 and tumour size did not change. Transsphenoidal surgery was performed in 6/7 women, and always improved symptomatic and biochemical features of OHSS; however, residual FGA tumour was present post-operatively in all cases studied.
Limitations, reasons for caution
It is possible that some ‘non-functioning’ gonadotroph adenomas cause subclinical problems including menstrual irregularity and mild OHSS which were never diagnosed.
We have insufficient data to determine the prognosis for future pregnancy after FGA-induced OHSS.
This study utilised historical case-notes, so some data is missing.
Wider implications of the findings
The ‘spontaneous’ presentation of OHSS may be confusing for clinicians. We report that FGA is an important cause of spontaneous OHSS which has well-defined biochemical and radiological characteristics, which may be treated effectively in the short-to-medium with pituitary surgery. Results of this study may provide greater awareness of FGA-induced OHSS.
Trial registration number
N/A
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Affiliation(s)
- N Papanikolaou
- Imperial College London, Metabolism-Digestion and Reproduction , London, United Kingdom
| | - A Coulden
- University hospitals Birmingham NHS Foundation Trust , Endocrinology, Birmingham, United Kingdom
| | - N Parker
- Imperial College Healthcare NHS Trust, Obstetrics and Gynaecology , London, United Kingdom
| | - S Lee
- Royal Infirmary of Edinburgh , Endocrinology, Edinburgh, United Kingdom
| | - C Kelly
- NHS Forth Valley , Endocrinology, Larbert, United Kingdom
| | - R Anderson
- University of Edinburgh, Obstetrics and Gynaecology- Center for Reproductive health , Edinburgh, United Kingdom
| | - A Rees
- Cardiff University- School of Medicine , Endocrinology, Cardiff, United Kingdom
| | - J Cox
- Imperial College Healthcare NHS Trust , Endocrinology, London, United Kingdom
| | - W Dhillo
- Imperial College London, Metabolism- Digestion and Reproduction , London, United Kingdom
| | - K Meeran
- Imperial College Healthcare NHS Trust , Endocrinology, London, United Kingdom
| | - M Al-Memar
- Imperial College Healthcare NHS Trust, Obstetrics and Gynaecology , London, United Kingdom
| | - N Karavitaki
- University hospitals Birmingham NHS Foundation Trust , Endocrinology, Birmingham, United Kingdom
| | - C Jayasena
- Imperial College London, Metabolism-Digestion and Reproduction , London, United Kingdom
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Grosbois J, Bailie E, Anderson R, Telfer E. P-456 Differential distribution of the extracellular matrix components within the human ovarian cortex and remodelling during in vitro culture. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
How is the extracellular matrix (ECM) network distributed within the human ovarian cortex, and how does in vitro culture alter its structure?
Summary answer
The ECM composition varies in the different layers of the ovarian cortex and is further remodelled during in vitro culture.
What is known already
The ovarian ECM is the scaffold within which follicles and stromal cells are organised. Its composition and structural properties constantly evolve to accommodate follicle development and expansion. Culturing primordial follicles within ovarian strips enables to reproduce the exact composition and stiffness of the native ECM. Yet, tissue preparation, which involves mechanical loosening, induces modifications in the ECM network and alters cell-cell contact, leading to spontaneous follicle activation. Characterising the native ovarian cortical ECM and its dynamic changes during culture will help decipher its role during folliculogenesis and improve both in vitro activation (IVA) and in vitro growth (IVG) systems.
Study design, size, duration
Fresh ovarian cortical biopsies were obtained from 6 women aged 28–38 years (mean ± SD: 32.7 ± 4.1 years) at elective caesarean section. Biopsies were cut into fragments of ∼4 × 1×0.5 mm and cultured for 0, 2, 4 or 6 days.
Participants/materials, setting, methods
Stromal cell density as well as the percentage of ECM-related protein (collagen, elastin, fibronectin, laminin) positive area in the entire cortex were quantified at each time point using histological and immunohistological analysis. Collagen and elastin contents were further quantified within each layer of the human ovarian cortex, namely the outer cortex, the mid-cortex, and the cortex-medulla junction regions.
Main results and the role of chance
Collagen content of the cortical ECM decreased from 55.5% ± 1.7% positive area at day 0 (D0) to 42.3% ± 1.1% at D6 (p = 0.001), and elastin increased from 1.1% ± 0.2% at D0 to 1.9% ± 0.1% at D6 (p = 0.001). Fibronectin and laminin remained stable. This suggests tissue loosening during culture, in accordance with the decreased stromal cell density from 3.6x106 ± 0.6 to 2.8x106 ± 0.3 cells/mm3 at D2 (p = 0.033) with no subsequent change. Moreover, collagen and elastin distribution were uneven throughout the cortex and during culture. Collagen deposition was maximal at the outer cortex and the lowest at the mid-cortex (69.4% ± 1.6% vs 53.8% ± 1.5% positive area, p < 0.001), and decreased from D0 to D2 (65.2% ± 2.0% vs 60.6% ± 2.2%, p = 0.033) then stabilised. Elastin showed the converse distribution, being most concentrated at the cortex-medulla junction (3.7% ± 0.3% vs 0.9% ± 0.2% in the outer cortex, p < 0.001), and peaked at D6 compared to D0 (3.1% ± 0.3% vs 1.3% ± 0.2%, p < 0.001). These data indicate a distinct phenotype of the ovarian cortical ECM depending on both its region and the culture period. Further characterisation of the differences in ECM architecture is ongoing.
Limitations, reasons for caution
Ovarian cortical biopsies were obtained from pregnant women undergoing caesarean sections. As such, the data obtained may not accurately reflect the ECM distribution of non-pregnant women.
Wider implications of the findings
Clarifying the composition and architecture signature of the ovarian cortical ECM will not only provide a foundation for further exploration of ovarian microenvironments, but also be of importance for understanding of ECM-follicle interactions maintaining the primordial pool and early growth stages leading to improvements in IVA and IVG.
Trial registration number
not applicable
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Affiliation(s)
- J Grosbois
- University of Edinburgh, Institute of Cell Biology , Edinburgh, United Kingdom
| | - E Bailie
- University of Edinburgh, MRC Centre for Reproductive Health , Edinburgh, United Kingdom
| | - R Anderson
- University of Edinburgh, MRC Centre for Reproductive Health , Edinburgh, United Kingdom
| | - E Telfer
- University of Edinburgh, Institute of Cell Biology , Edinburgh, United Kingdom
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Anderson R, Royster G. P-424 Endometrial receptivity as determined by Endometrial Receptivity Analysis (ERA) can change after a successful live birth from a frozen embryo transfer (FET). Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.401] [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: 11/13/2022] Open
Abstract
Abstract
Study question
Endometrial receptivity as determined by Endometrial Receptivity Analysis (ERA) can change after a successful live birth from a frozen a frozen embryo transfer (FET)
Summary answer
27 of 33 patients with a previous live birth from FET had an altered endometrial receptivity profile by ERA after a subsequent unsuccessful FET.
What is known already
The endometrial window of implantation is approximately 24 hours wide with a complex interaction of autocrine, paracrine, and endocrine factors. Successful embryo implantation involves a 3-step process of apposition, adhesion, and invasion of an embryo into a receptive endometrium. The ERA was developed using the expression profile of 248 genes using Next Generation Sequencing to determine if the endometrium is receptive, early receptive, late receptive, pre-receptive or post-receptive to objectively determine the optimal timing of progesterone exposure prior to embryo transfer. Some studies have shown statistically significant improvements in live birth rates while other studies have shown no difference.
Study design, size, duration
Case series of 33 patients with successful live birth following euploid FET using 5 days of progesterone (P + 5) with subsequent unsuccessful FET using the same protocol from January 2018 – December 2020. 27 of 33 patients who repeated their ERA were found to be non-receptive using P + 5. The new ERA profile results were used for their next FET. Implantation and live birth rates were calculated.
Participants/materials, setting, methods
A single private practice fertility clinic performed 340 ERA cycles from January 2018 – December 2020 with 276 subsequent FET cycles. An observational study of 33 patients with a previous live birth using P + 5 elected to repeat their ERA cycle after an unsuccessful FET. Implantation and live birth rates were calculated for their subsequent FET after completing the repeat ERA.
Main results and the role of chance
Repeat ERA result for patients with a previous live birth using P + 5 revealed that 6 patients still needed P + 5 (18.2%) for a receptive endometrial profile, 8 patients (24.2%) needed an extra 12 hours (P + 5.5), 18 patients (54.5%) needed an extra 24 hours (P + 6) and only one patient (3.0%) needed an extra 48 hours (P + 7). No patient that repeated their ERA after a previous live birth had a post-receptive profile (P + 4 or P + 4.5) and one patient had successful live births after using 3 different ERA profiles (P + 5, P + 6 and P + 7). All patients except one had repeat ERA results that were pre-receptive with only one patient changing from P + 6 to P + 5. FET cycles using P + 5 and P + 7 had a 100% implantation and pregnancy rate, while patients using P + 5.5 had the lowest implantation rate (62.5%) and live birth rate (37.5%). Patients with an ERA profile of P + 6 had an implantation rate of 94.1% and live birth rate of 88.2%. The small number of patients in this case series make a type I error possible because of the low number of patients in each ERA profile category with insufficient power to reach statistical significance.
Limitations, reasons for caution
Implantation rate for the clinic during the study period was 75% and live birth rate of 68% using euploid embryos. Our high baseline implantation and live birth rates, coupled with low numbers of patients in this observational study, make these results less generalizable to the IVF population at large.
Wider implications of the findings
It is widely accepted that ERA results are reproducible and do not change during a woman’s reproductive life. These results suggest that some women may have an altered window of receptivity after both successful and unsuccessful FET cycles. It may be reasonable to repeat ERA cycles for carefully selected patients.
Trial registration number
N/A
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Affiliation(s)
- R Anderson
- The Southern California Center for Reproductive Medicine, ART Clinic , Newport Beach, U.S.A
| | - G.D Royster
- The Southern California Center for Reproductive Medicine, ART Clinic , Newport Beach, U.S.A
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Mohammed H, Landeryou T, Chernet M, Liyew EF, Wulataw Y, Getachew B, Difabachew H, Phillips A, Maddren R, Ower A, Mekete K, Belay H, Endrias T, Anjulo U, Tasew G, Anderson R, Tollera G, Abate E. Comparing the accuracy of two diagnostic methods for detection of light Schistosoma haematobium infection in an elimination setting in Wolaita Zone, South Western Ethiopia. PLoS One 2022; 17:e0267378. [PMID: 35486627 PMCID: PMC9053789 DOI: 10.1371/journal.pone.0267378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/12/2021] [Accepted: 04/07/2022] [Indexed: 11/18/2022] Open
Abstract
Reagent urinalysis dipstick and filtration have been recommended diagnostic methods for the detection of urogenital schistosomiasis. However, the accurate diagnosis of light infections using these methods presents a major challenge. This study evaluates the diagnosis accuracy of light infection with Schistosoma haematobium in study participants living in Wolaita Zone, an area targeted for sustainable control of Schistosomiasis, and ultimately interrupt transmission. Urine samples were collected from children and adults in surveys carried out during baseline and longitudinal sentinel site surveys conducted from 2018 to 2020. All urine samples were tested using a reagent urinalysis dipstick test (Haemastix) to detect microhaematuria with reference urine filtration technique as a proxy for S. haematobium infection. Sensitivity and specificity were determined in diagnosing urogenital schistosomiasis. Cohen’s Kappa statistics was done for the agreement of these diagnostic methods. A total of 12,102 participants were enrolled in the current baseline study. Among them, 285 (2.35%) samples tested positive for microhaematuria and 21 (0.20%) positive for S. haematobium eggs. A total of 4,357 samples were examined in year 1 and year 2 using urine dipsticks, and urine filtration 172 (3.95%) and 2 (0.05%) were positive for microhaematuria and S. haematobium eggs. The reagent urinalysis dipsticks showed the highest sensitivity and specificity for diagnosing light intensity of infection,100% (95% CI:85.18–100.00) and 97.4% (95% CI: 97.10–97.60), respectively. There is a slight agreement between the two methods (Kappa = 0.09, 95% CI: 0.01–0.18). The present study revealed very low prevalence and light intensity of S. haematobium infections. The study also highlights that the dipstick test is considered a useful adjunct diagnostic tool for population-based control of urogenital schistosomiasis.
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Affiliation(s)
- Hussein Mohammed
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
- * E-mail:
| | - Toby Landeryou
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | - Melkie Chernet
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Ewnetu Firdawek Liyew
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Yonas Wulataw
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Birhanu Getachew
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Hailemariam Difabachew
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Anna Phillips
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | - Rosie Maddren
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | - Alison Ower
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | - Kalkidan Mekete
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Habtamu Belay
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Tujuba Endrias
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Ufaysa Anjulo
- Disease Prevention and Health Promotion Core Process, Ministry of Health, Wolaita, Ethiopia
| | - Geremew Tasew
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Roy Anderson
- London Centre for Neglected Tropical Disease Research, London, United Kingdom
| | - Getachew Tollera
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
| | - Ebba Abate
- Bacterial, Parasitic and Zoonotic Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
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30
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Mashele SA, Steel HC, Matjokotja MT, Rasehlo SSM, Anderson R, Cholo MC. Assessment of the efficacy of clofazimine alone and in combination with primary agents against Mycobacterium tuberculosis in vitro. J Glob Antimicrob Resist 2022; 29:343-352. [PMID: 35339735 DOI: 10.1016/j.jgar.2022.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES The chemotherapeutic regimens of drug-susceptible (DS)-tuberculosis (TB) patients comprise four primary anti-TB drugs; rifampicin (RMP), isoniazid (INH), ethambutol (EMB) and pyrazinamide (PZA), administered for six-to-nine months. These drug regimens target the various microbial populations that include actively-replicating (AR), slow-replicating (SR) and non-replicating (NR) organisms. Clofazimine (CFZ) has showed benefit in shortening DS-TB treatment in vivo from six to four months when used in combination with this regimen in murine models of experimental infection. However, its antimicrobial efficacy when used in combination with the primary drugs against the various microbial populations of Mycobacterium tuberculosis has not been demonstrated. METHODS In the current in vitro study, the inhibitory and bactericidal activities of CFZ in combination with the primary anti-TB drugs, RMP, INH and EMB against the AR and SR organisms in planktonic and biofilm-forming cultures, respectively, were evaluated by fractional inhibitory concentration index (FICI) and fractional bactericidal concentration index (FBCI) determinations, using the Loewe Additivity Model. RESULTS In planktonic cultures, CFZ demonstrated synergistic growth inhibitory activity in combination with RMP and INH individually and collectively. With respect to bactericidal activity, CFZ exhibited synergistic activity only in a two-drug combination with RMP. However, in biofilm-forming cultures, all CFZ-containing anti-TB drug combinations exhibited synergistic inhibitory and bactericidal effects, particularly in combination with RIF and INH. CONCLUSION Clofazimine exhibited synergistic effects in combination with primary anti-TB drugs against both planktonic and biofilm-forming cultures, showing potential benefit in augmenting treatment outcome when used during standard TB chemotherapy.
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Affiliation(s)
- S A Mashele
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - H C Steel
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - M T Matjokotja
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - S S M Rasehlo
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa; Department of Medical Microbiology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - R Anderson
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - M C Cholo
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
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Al-Kaisey A, Parameswaran R, Anderson R, Chieng D, Hawson J, Voskoboinik A, Sugumar H, Wong G, West D, Azzopardi S, Joseph S, McLellan A, Ling L, Bryant C, Finch S, Sanders P, Lee G, Kistler P, Kalman J. Randomised Evaluation of the Impact of Catheter Ablation on Cognitive Function in Atrial Fibrillation. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.187] [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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32
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Chambers M, McDonald R, Ahonen M, Anderson R, Schoenfisch M. 519: Small-molecule nitric oxide–releasing diazeniumdiolate for treating Pseudomonas aeruginosa infections. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01943-3] [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: 10/20/2022]
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33
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Pachepsky Y, Anderson R, Harter T, Jacques D, Jamieson R, Jeong J, Kim H, Lamorski K, Martinez G, Ouyang Y, Shukla S, Wan Y, Zheng W, Zhang W. Fate and transport in environmental quality. J Environ Qual 2021; 50:1282-1289. [PMID: 34661914 PMCID: PMC9832569 DOI: 10.1002/jeq2.20300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
Changes in pollutant concentrations in environmental media occur both from pollutant transport in water or air and from local processes, such as adsorption, degradation, precipitation, straining, and so on. The terms "fate and transport" and "transport and fate" reflect the coupling of moving with the carrier media and biogeochemical processes describing local transformations or interactions. The Journal of Environmental Quality (JEQ) was one of the first to publish papers on fate and transport (F&T). This paper is a minireview written to commemorate the 50th anniversary of JEQ and show how the research interests, methodology, and public attention have been reflected in fate and transport publications in JEQ during the last 40 years. We report the statistics showing how the representation of different pollutant groups in papers changed with time. Major focus areas have included the effect of solution composition on F&T and concurrent F&T, the role of organic matter, and the relative role of different F&T pathways. The role of temporal and spatial heterogeneity has been studied at different scales. The value of long-term F&T studies and developments in modeling as the F&T research approach was amply demonstrated. Fate and transport studies have been an essential part of conservation measure evaluation and comparison and ecological risk assessment. For 50 years, JEQ has delivered new insights, methods, and applications related to F&T science. The importance of its service to society is recognized, and we look forward to new generations of F&T researchers presenting their contributions in JEQ.
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Affiliation(s)
- Y Pachepsky
- USDA-ARS, Environmental Microbial and Food Safety Laboratory, 10300 Baltimore Ave., Bldg. 173, Beltsville, MD, 20705, USA
| | - R Anderson
- USDA-ARS, U.S. Salinity Laboratory, Agricultural Water Efficiency and Salinity Research Unit, 450 W. Big Springs Rd., Riverside, CA, 92507-4617, USA
| | - T Harter
- Dep. of Land, Air and Water Resources, Univ. of California, Davis, One Shields Ave., Davis, CA, 95616-8627, USA
| | - D Jacques
- Performance Assessments Unit, Institute Environment, Health and Safety, Belgian Nuclear Research, Mol, Belgium
| | - R Jamieson
- Dep. of Civil and Resource Engineering, Dalhousie Univ., Sexton Campus, 1360 Barrington St., Rm. 215 Bldg. D, Halifax, NS, B3H 4R2, Canada
| | - J Jeong
- Texas A&M AgriLife Research, 720 East Blackland Rd., Temple, TX, 76502, USA
| | - H Kim
- Dep. of Mineral Resources and Energy Engineering, Dep. of Environment and Energy, Jeonbuk National Univ., 567, Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk, 54896, Republic of Korea
| | - K Lamorski
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, Lublin, 20-290, Poland
| | - G Martinez
- Dep. of Applied Physics, Univ. of Córdoba, Córdoba, Spain
| | - Y Ouyang
- USDA Forest Service, Center for Bottomland Hardwoods Research, 775 Stone Blvd., Thompson Hall, Room 309, Mississippi State, MS, 39762, USA
| | - S Shukla
- The Southwest Florida Research and Education Center, Univ. of Florida, Immokalee, FL, 34142, USA
| | - Y Wan
- USEPA Center for Environmental Measurement and Modeling, Gulf Breeze, FL, 32561, USA
| | - W Zheng
- Illinois Sustainable Technology Center, Univ. of Illinois at Urbana-Champaign, 1 Hazelwood Dr., Champaign, IL, 61820, USA
| | - W Zhang
- Dep. of Plant, Soil and Microbial Sciences; Environmental Science, and Policy Program, Michigan State Univ., East Lansing, MI, 48824, USA
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Rapoport B, Steel H, Benn CA, Nayler S, Smit T, Heyman L, Theron A, Hlatswayo N, Kwofie L, Meyer P, Anderson R. 150P Dysregulation of immune checkpoint proteins in newly-diagnosed early breast cancer patients. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.431] [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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35
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Thiel M, Wild S, Anderson R, Bhattacharya S, Greaves J. P–720 Prevalence of Female Infertility in the UK Armed Forces. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.719] [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
Study question
What is the prevalence of female infertility among UK military personnel and does it differ from the Metropolitan Police Service (MPS) and civilian populations?
Summary answer
Prevalence of self-reported infertility was higher in servicewomen (31.7%) and female MPS officers (36.3%) than in civilian women (24.4%).
What is known already
Arduous employment is associated with numerous potential occupational hazards and behaviours that may be relevant to fertility. These include physical and psychological stress, smoking, alcohol drinking and other lifestyle factors. A preliminarily report in 2016 indicated that UK servicewomen over 30 years of age were more likely to present with fertility problems compared with reported civilian infertility data for age-matched women. Few previous studies have compared infertility prevalence of servicewomen with civilians, and none have compared infertility prevalence with other occupations.
Study design, size, duration
A cross-sectional study was undertaken in 2019 to determine prevalence of infertility. All eligible UK servicewomen (14,650) and MPS officers (8,262) aged 18–60 years were invited to participate with sisters of participants recruited as controls using a snowball technique. Data including pregnancy history, time to each pregnancy and self-reported infertility risk-factors were collected using an online questionnaire. We estimated a sample of 4898 servicewomen would give a precision of 1% around infertility prevalence estimates.
Participants/materials, setting, methods
The questionnaire was developed, piloted and adapted for electronic distribution. The occupational groups were invited by email to complete the questionnaire on three occasions. Prevalence of infertility was defined as the proportion of women at risk of pregnancy who had not become pregnant within 12 months. Only women with pregnancy outcomes, or fully tested for fertility (12 months or more of exposure), were included in the denominator.
Main results and the role of chance
Participants included 4806 (33%) women serving in the UK Armed Forces, 1237 (15%) female MPS officers and 435 (estimated 8%) non-military, non-MPS sisters (biological, half, step or adopted) of both groups. 98.4% of responses were complete. Prevalence of self-reported 12-month infertility was 31.7% (95% CI 29.9–33.5) in servicewomen, 36.3% (95% CI 33.1–39.7) in MPS officers and 24.4% (95% CI 19.6–29.8) in civilian women. Age, history of polycystic ovary syndrome, endometriosis, fibroids, tubal and pelvic surgery, hysterectomy and a short General Health Questionnaire (GHQ 12) score of > 4 (suggesting a minor psychiatric disorder) were associated with infertility and adjusted for in logistic regression models to estimate odds ratios. The adjusted odds ratio (aOR) of infertility in servicewomen was 1.0 (95% CI 0.8–1.2) compared with MPS officers and 1.5 (95% CI 1.1–2.0) in both servicewomen and MPS officers compared with sisters.
Limitations, reasons for caution
The major limitation is the low response rate, particularly in the two control groups, potentially resulting in response bias. Prevalence of infertility could have been further over-estimated if fertile women are more likely to have left the military or MPS. There is scope for residual confounding.
Wider implications of the findings: Further analyses will explore the key risk factors to identify what aspects of these occupations contribute to infertility and which may be modifiable. Future cohort studies would be helpful to extend the understanding of the influence of occupation on infertility.
Trial registration number
Not applicable
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Affiliation(s)
- M Thiel
- University of Edinburgh, Centre for Reproductive Health, Edinburgh, United Kingdom
| | - S Wild
- University of Edinburgh, Centre for Population Health Sciences, Edinburgh, United Kingdom
| | - R Anderson
- University of Edinburgh, Centre for Reproductive Health, Edinburgh, United Kingdom
| | - S Bhattacharya
- University of Aberdeen, School of Medicine and Dentistry, Aberdeen, United Kingdom
| | - J Greaves
- Army Headquarters, Army Health and Performance Research, Andover, United Kingdom
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Schiewe MC, Emeny-Smith K, Nugent N, Zozula S, Wozniak K, Zeffiro C, Baer E, Lee T, Hatch I, Anderson R. P–758 The efficacy, safety and proven security of microSecure vitrification offers “peace of mind” and reliability during a global pandemic. Hum Reprod 2021. [PMCID: PMC8385890 DOI: 10.1093/humrep/deab130.757] [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: 11/16/2022] Open
Abstract
Study question Under deadly pandemic conditions involving the novel SARS-CoV–2 corona virus, could biopsied blastocysts be safely cryopreserved, stored and utilized for subsequent warming cycles? Summary answer Blastocysts were securely stored, effectively warmed and safely transferred to yield normal pregnancy outcomes under uncertain laboratory conditions subject to unprecedented policy changes. What is known already By April 2020, every IVF lab worldwide was implementing deep cleaning/disinfecting procedures in their laboratory and patient-contact areas, thorough hand-washing policies and mandatory PPE to reduce the chance of contact transmission and spread of the potentially deadly SARS-CoV–2 coronavirus. Furthermore, we know that safeguards like oil overlay culture dishes and pipetting dilution factors provide insurance against possible contamination. However, knowing that the trophectoderm of blastocysts possessed the ACE–2 binding receptor, potential concern existed regarding the continuation of laser zona opening and biopsy procedures that could possibly expose cryopreserved embryos to the coronavirus in liquid nitrogen storage (vapor or liquid). Study design, size, duration Between March 8 and December 22, 2020, 508 patients performed FET cycles involving the use of single (n = 490) or dual (n = 18) euploid microSecure vitrified blastocysts. In this retrospective analysis, we compared clinical pregnancy outcomes to a 5 year dataset (2015–2019) encompassing 2768 single and 272 dual embryo transfer FET cycles. All blastocysts were vitrified using a closed microSecure system and Innovative Cryoenterprise (ICE; NJ, USA) non-DMSO, glycerol-EG solutions. Differences were assessed by Chi-square analysis (p < 0.05). Participants/materials, setting, methods Deep cleaning was performed with Simple Green Pro3+ Virucide in non-lab areas (e.g., ET rooms, waiting room) and 6% H2O2 & OoSafe solutions to disinfect lab surfaces and equipment. Group embryo cultures were performed in MCO–5M humidified incubators under low oxygen tri-gas conditions with varying CO2 levels (5.3–6.0%; pH = 7.3–7.35) using 25µl droplets of LifeGlobal medium+7.5%LGPS+1%sodium hyaluronate, before changing to 10µl droplet/GPS dishes post-biopsy. FET cycles involved 4-step sucrose dilutions and transvaginal ultrasound-guided embryo transfers. Main results and the role of chance While ICSI fertilization rates were unchanged in 2020 (79.4% 2PN vs 77.3%), blastocyst utilization rates tended to be slightly lower than past years (56.4% vs 59.9%) but within an acceptable range. Of 529 blastocysts warmed, 527 (99.7%) survived completely for transfer, being comparable to the 99.4% experienced over 5 years. Furthermore, there was no differences detected in single embryo transfer pregnancy outcomes. The implantation and ongoing clinical pregnancy/live birth rates were 69% and 66.53% compared to 70.4% and 65.1%, respectively. Under pandemic conditions we did not observe an increase in biochemical pregnancies (10.3%) nor spontaneous miscarriage rates (7.8%). Although it is possible that our rigorous disinfection practices could have attributed to lower blastocyst production, the viability of those embryos was not compromised. Importantly, we were able to feel comfortable performing micromanipulation and cryopreservation procedures throughout the year knowing that we were effectively eliminating possible vertical transmission of coronavirus to an exposed trophectoderm layer in cryostorage by applying mircoSecure vitrification. Post-FET clinical check-ups revealed no patient reporting any fever or other Covid–19 symptoms in the weeks following their transfers. We are fortunate to say that our Lab staff, physicians and patients have remained healthy throughout 2020. Limitations, reasons for caution Blastocyst survival and viability are independent of possible viral exposure. Previously, the risk of disease transmission via liquid nitrogen or vapor exposure was considered highly unlikely (Pomeroy et al., 2010), but that was at a time when embryos were primarily zona-enclosed. Today’s ART standards have us re-evaluating safer approaches. Wider implications of the findings: We have effectively mitigated avoiding performing zona opening procedures by employing our standard practice of aseptic, closed vitrification. In combination with standard preventative measures (PPE, hand hygiene, distance awareness) and routine deep cleaning practices, we sustained a contamination-free environment and healthy patients, capable of sustaining high levels of pregnancy success. Trial registration number Not applicable
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Affiliation(s)
| | | | - N Nugent
- Ovation Fertility, Lab, Newport Beach, USA
| | - S Zozula
- Ovation Fertility, Lab, Newport Beach, USA
| | - K Wozniak
- Ovation Fertility, Lab, Newport Beach, USA
| | - C Zeffiro
- Ovation Fertility, Lab, Newport Beach, USA
| | - E Baer
- Ovation Fertility, Lab, Newport Beach, USA
| | - T Lee
- FCARE, Fertility Clinic, Brea, USA
| | - I Hatch
- FCSC, Fertility Clinic, Irvine, USA
| | - R Anderson
- SCCRM, Fertility Clinic, Newport Beach, USA
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Bailie E, Maidarti M, Hawthorn R, Jack S, Watson N, Telfer E, Anderson R. P–437 The ovaries of transgender men indicate effects of high dose testosterone on the primordial and early growing follicle pool. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Does high-dose testosterone therapy affect the stage distribution, morphological health and DNA damage repair capacity of human ovarian follicles and their survival in vitro?
Summary answer
Testosterone exposure is associated with reduced follicle growth activation, reduced follicle health and increased DNA damage: these further deteriorate after six days of culture. What is known already: Androgens have diverse actions within the ovary, however, there is a lack of information regarding the long-term effects of high-dose testosterone on ovarian function and reproductive potential. Cumulus-oocyte complexes recovered from transgender men have been successfully matured in-vitro but little is known regarding the impact of this gender affirming endocrine therapy on the primordial follicle pool. Study design, size, duration: Whole ovaries were obtained from four transgender men aged 25–36 years with informed consent at oophorectomy. All patients had received 1000mg testosterone undecanoate intramuscularly at 12–16 week intervals for a minimum of 4 years pre-operatively. Cortical tissues were dissected into small pieces (≈1x1x0.5mm) and either immediately fixed for histological analysis or cultured for 6 days. Testosterone-treated ovaries were compared to cortical biopsies from age-matched healthy women obtained at caesarean section (n = 4, age 26–36). Participants/materials, setting, methods: Follicle number, classification of developmental stage and morphology were evaluated by histological analysis of ovarian cortical tissue from day 0 and 6 days post culture. Immunohistochemical analysis included γH2AX as a marker of DNA damage, and meiotic recombination 11 (MRE11), ataxia telangiectasia mutated (ATM) and Rad51 as DNA repair proteins. A total of 3802 follicles from testosterone exposed and 878 from control ovaries were analysed. Main results and the role of chance: At day 0 (D0), transgender tissue had a higher proportion of non-growing follicles (92.7±1.7%) compared to control (85.4±6.2%, p < 0.05) but a lower proportion of morphologically healthy follicles (non-growing 59%, primary 61%, secondary 36%; vs 83%, 75%, 80% in controls, all p < 0.005). After 6 days in culture, the proportion of growing follicles increased (51.3% vs 46.5%) but follicle health further declined (all stages p < 0.005).
DNA damage was assessed by expression of γH2AX. At D0, the proportion of oocytes showing DNA damage was significantly higher in transgender non-growing follicles (48.1±12.5%, vs 12.3±0.25%, p < 0.005). After culture, γH2AX expression increased in both transgender (p < 0.005) and controls (p < 0.005) but remained higher in transgender oocytes (non-growing 72.2%, primary 71.7% vs 27.3%, 46.2%, all p < 0.05). At D0, there was no difference in expression of DNA repair enzymes ATM and RAD51 between transgender and control oocytes, and increased expression of MRE11 in control non-growing follicles (p < 0.05). Post-culture, there was a significant increase in ATM expression in transgender non-growing oocytes compared to control (98.5% vs 77.8%, p < 0.05) and a less marked decline in RAD51 expression(p < 0.05). The expression of MRE–11 in control non-growing oocytes dramatically declined (100% to 58.2%, p < 0.05), unlike in transgender tissue where expression was comparable to D0.
Limitations, reasons for caution
A large number of follicles have been analysed, but only from a small number of ovaries. DNA damage at D0 and after 6 days of culture may not reflect DNA damage and repair capacity at later stages of follicle growth. The effect of duration of testosterone treatment was not investigated.
Wider implications of the findings: These data indicate that high circulating concentrations of testosterone have previously unrecognised effects on the primordial and small-growing follicles of the ovary. These results may have implications for transgender men receiving gender-affirming therapy prior to considering pregnancy or fertility preservation measures.
Trial registration number
n/a
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Affiliation(s)
- E Bailie
- University of Edinburgh, reproductive biology, Edinburgh, United Kingdom
| | - M Maidarti
- University of Edinburgh, reproductive biology, Edinburgh, United Kingdom
| | - R Hawthorn
- Queen Elizabeth University Hospital, Gynaecology, Glasgow, United Kingdom
| | - S Jack
- Royal Infirmary Edinburgh, Gynaecology, Edinburgh, United Kingdom
| | - N Watson
- Spire Thames Valley Hospital, Gynaecology, London, United Kingdom
| | - E Telfer
- University of Edinburgh, reproductive biology, Edinburgh, United Kingdom
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Bailie E, Maidarti M, Hawthorn R, Jack S, Watson N, Telfer E, Anderson R. P-437 The ovaries of transgender men indicate effects of high dose testosterone on the primordial and early growing follicle pool. Hum Reprod 2021. [DOI: 10.1093/humrep/deab127.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Study question
Does high-dose testosterone therapy affect the stage distribution, morphological health and DNA damage repair capacity of human ovarian follicles and their survival in vitro?
Summary answer
Testosterone exposure is associated with reduced follicle growth activation, reduced follicle health and increased DNA damage: these further deteriorate after six days of culture.
What is known already
Androgens have diverse actions within the ovary, however, there is a lack of information regarding the long-term effects of high-dose testosterone on ovarian function and reproductive potential. Cumulus-oocyte complexes recovered from transgender men have been successfully matured in-vitro but little is known regarding the impact of this gender affirming endocrine therapy on the primordial follicle pool
Study design, size, duration
Whole ovaries were obtained from four transgender men aged 25-36 years with informed consent at oophorectomy. All patients had received 1000mg testosterone undecanoate intramuscularly at 12-16 week intervals for a minimum of 4 years pre-operatively. Cortical tissues were dissected into small pieces (≈1x1x0.5mm) and either immediately fixed for histological analysis or cultured for 6 days. Testosterone-treated ovaries were compared to cortical biopsies from age-matched healthy women obtained at caesarean section (n = 4, age 26-36).
Participants/materials, setting, methods
Follicle number, classification of developmental stage and morphology were evaluated by histological analysis of ovarian cortical tissue from day 0 and 6 days post culture. Immunohistochemical analysis included γH2AX as a marker of DNA damage, and meiotic recombination 11 (MRE11), ataxia telangiectasia mutated (ATM) and Rad51 as DNA repair proteins. A total of 3802 follicles from testosterone exposed and 878 from control ovaries were analysed.
Main results and the role of chance
At day 0 (D0), transgender tissue had a higher proportion of non-growing follicles (92.7±1.7%) compared to control (85.4±6.2%, p < 0.05) but a lower proportion of morphologically healthy follicles (non-growing 59%, primary 61%, secondary 36%; vs 83%, 75%, 80% in controls, all p < 0.005). After 6 days in culture, the proportion of growing follicles increased (51.3% vs 46.5%) but follicle health further declined (all stages p < 0.005).
DNA damage was assessed by expression of γH2AX. At D0, the proportion of oocytes showing DNA damage was significantly higher in transgender non-growing follicles (48.1±12.5%, vs 12.3±0.25%, p < 0.005). After culture, γH2AX expression increased in both transgender (p < 0.005) and controls (p < 0.005) but remained higher in transgender oocytes (non-growing 72.2%, primary 71.7% vs 27.3%, 46.2%, all p < 0.05).
At D0, there was no difference in expression of DNA repair enzymes ATM and RAD51 between transgender and control oocytes, and increased expression of MRE11 in control non-growing follicles (p < 0.05). Post-culture, there was a significant increase in ATM expression in transgender non-growing oocytes compared to control (98.5% vs 77.8%, p < 0.05) and a less marked decline in RAD51 expression(p < 0.05). The expression of MRE-11 in control non-growing oocytes dramatically declined (100% to 58.2%, p < 0.05), unlike in transgender tissue where expression was comparable to D0.
Limitations, reasons for caution
A large number of follicles have been analysed, but only from a small number of ovaries. DNA damage at D0 and after 6 days of culture may not reflect DNA damage and repair capacity at later stages of follicle growth. The effect of duration of testosterone treatment was not investigated.
Wider implications of the findings
These data indicate that high circulating concentrations of testosterone have previously unrecognised effects on the primordial and small-growing follicles of the ovary. These results may have implications for transgender men receiving gender-affirming therapy prior to considering pregnancy or fertility preservation measures.
Trial registration number
n/a
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Affiliation(s)
- E Bailie
- University of Edinburgh, reproductive biology, Edinburgh, United Kingdom
| | - M Maidarti
- University of Edinburgh, reproductive biology, Edinburgh, United Kingdom
| | - R Hawthorn
- Queen Elizabeth University Hospital, Gynaecology, Glasgow, United Kingdom
| | - S Jack
- Royal Infirmary Edinburgh, Gynaecology, Edinburgh, United Kingdom
| | - N Watson
- Spire Thames Valley Hospital, Gynaecology, London, United Kingdom
| | - E Telfer
- University of Edinburgh, reproductive biology, Edinburgh, United Kingdom
| | - R Anderson
- University of Edinburgh, reproductive biology, Edinburgh, United Kingdom
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Howson T, Chapman PJ, Shah N, Anderson R, Holden J. A comparison of porewater chemistry between intact, afforested and restored raised and blanket bogs. Sci Total Environ 2021; 766:144496. [PMID: 33421775 DOI: 10.1016/j.scitotenv.2020.144496] [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] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/18/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Afforestation is a significant cause of global peatland degradation. In some regions, afforested bogs are now undergoing clear-felling and restoration, often known as forest-to-bog restoration. We studied differences in water-table depth (WTD) and porewater chemistry between intact, afforested, and restored bogs at a raised bog and blanket bog location. Solute concentrations and principal component analysis suggested that water-table drawdown and higher electrical conductivity (EC) and ammonium (NH4-N) concentrations were associated with afforestation. In contrast, higher dissolved organic carbon (DOC) and phosphate (PO4-P) concentrations were associated with deforestation. Drying-rewetting cycles influenced seasonal variability in solute concentrations, particularly in shallower porewater at the raised bog location. WTD was significantly deeper in the oldest raised bog restoration site (~9 years post-restoration) than the intact bog (mean difference = 6.2 cm). However, WTD in the oldest blanket bog restoration site (~17 years post-restoration), where furrows had been blocked, was comparable to the intact bog (mean difference = 1.2 cm). When averaged for all porewater depths, NH4-N concentrations were significantly higher in the afforested than the intact sites (mean difference = 0.77 mg L-1) whereas significant differences between the oldest restoration sites and the intact sites included higher PO4-P (mean difference = 70 μg L-1) in the raised bog and higher DOC (mean difference = 5.6 mg L-1), EC (mean difference = 19 μS cm-1) and lower SUVA254 (mean difference = 0.13 L mg-1 m-1) in the blanket bog. Results indicate felled waste (brash) may be a significant source of soluble C and PO4-P. Mean porewater PO4-P concentrations were between two and five times higher in furrows and drains in which brash had accumulated compared to other locations in the same sites where brash had not accumulated. Creating and maintaining brash-free buffer zones may therefore minimise freshwater impacts.
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Affiliation(s)
- T Howson
- water@leeds, School of Geography, University of Leeds, Leeds LS2 9JT, UK.
| | - P J Chapman
- water@leeds, School of Geography, University of Leeds, Leeds LS2 9JT, UK
| | - N Shah
- Forest Research, Northern Research Station, Roslin, Midlothian, EH25 9SY, UK
| | - R Anderson
- Forest Research, Northern Research Station, Roslin, Midlothian, EH25 9SY, UK
| | - J Holden
- water@leeds, School of Geography, University of Leeds, Leeds LS2 9JT, UK
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Maddren R, Phillips A, Ower A, Landeryou T, Mengistu B, Anjulo U, Firdawek E, Negussu N, Anderson R. Soil-transmitted helminths and schistosome infections in Ethiopia: a systematic review of progress in their control over the past 20 years. Parasit Vectors 2021; 14:97. [PMID: 33546757 PMCID: PMC7866680 DOI: 10.1186/s13071-021-04600-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 01/15/2021] [Indexed: 11/18/2022] Open
Abstract
Background Ethiopia has set the ambitious national targets of eliminating soil-transmitted helminths (STH) and schistosomiasis (SCH) as public health problems by 2020, and breaking their transmission by 2025. This systematic review was performed to provide insight into the progress made by the national STH and SCH control programme purposed with reaching these targets. Methods Studies published on STH and SCH in Ethiopia were searched for using Web of Science, PubMed, Scopus, and the resulting references of selected studies. Prevalence and intensity were analysed, stratified by region, age, and diagnostics. Results A total of 231 papers published between 2000 and 2020 were included. Over the past two decades, Trichuris trichiura (TT) infection has shown the most statistically significant decrease (93%, p < 0.0001), followed by Schistosoma mansoni (SM) (69%, p < 0.0001), Ascaris lumbricoides (AL) (67%, p < 0.0001) and Schistosoma haematobium (83%, p = 0.038) infections. Geographically, parasite burden has only consistently shown a significant reduction in the Southern Nations, Nationalities and Peoples’ Region of Ethiopia, where AL, TT, hookworm and SM significantly decreased by 80% (p = 0.006), 95% (p = 0.005), 98% (p = 0.009) and 87% (p = 0.031), respectively. Prevalence of STH was highest among adults across all species, contrary to typical age-infection profiles for TT and AL that peak among school-aged children. Expanding treatment to the whole community would target reservoirs of adult and preschool-aged infection within the community, assisting Ethiopia in reaching their national transmission break targets. There was substantial heterogeneity in diagnostic methods used across studies, the majority of which predominantly used single-slide Kato–Katz. This low slide frequency provides poor diagnostic sensitivity, particularly in low endemic settings. Conclusion The prevalence of STH and SCH in Ethiopia has decreased over time due to the strategic use of anthelmintics. Both standardising and increasing the sensitivity of the diagnostics used, alongside the ubiquitous use of parasite intensity with prevalence, would enable a more accurate and comparable understanding of Ethiopia’s epidemiological progress. Further work is needed on community-wide surveillance in order to understand the burden and subsequent need for treatment among those outside of the standard school-based control program. ![]()
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Affiliation(s)
- Rosie Maddren
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK.
| | - Anna Phillips
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
| | - Alison Ower
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
| | - Toby Landeryou
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
| | - Birhan Mengistu
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
| | - Ufaysa Anjulo
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
| | - Ewnetu Firdawek
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
| | - Nebiyu Negussu
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
| | - Roy Anderson
- London Centre for Neglected Tropical Disease Research (LCNTDR), Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, W2 1PG, UK
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Al-kaisey A, Parameswaran R, Anderson R, Hawson J, Chieng D, Sugumar H, Nam M, Tonchev I, Watts T, McLellan A, Kistler P, Lee G, Kalman J. Left and Right Atrial Septal Phase Mapping of Persistent Atrial Fibrillation: Marked Electrical Dissociation and Heterogeneous Activation Patterns. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.151] [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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Kistler P, Chieng D, Tonchev I, Sugumar H, McLellan A, Prabhu S, Voskoboinik A, Schwartz L, Parameswaran R, Anderson R, Al-Kaisey A, Ling L, Lee G, Kalman J. P-wave Morphology in Focal Atrial Tachycardia: An Updated 2021 Algorithm to Predict Site of Origin. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Aapro M, Lyman GH, Bokemeyer C, Rapoport BL, Mathieson N, Koptelova N, Cornes P, Anderson R, Gascón P, Kuderer NM. Supportive care in patients with cancer during the COVID-19 pandemic. ESMO Open 2020; 6:100038. [PMID: 33421735 PMCID: PMC7808078 DOI: 10.1016/j.esmoop.2020.100038] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 09/10/2020] [Revised: 11/25/2020] [Accepted: 12/10/2020] [Indexed: 12/11/2022] Open
Abstract
Cancer care has been profoundly impacted by the global pandemic of severe acute respiratory syndrome coronavirus 2 disease (coronavirus disease 2019, COVID-19), resulting in unprecedented challenges. Supportive care is an essential component of cancer treatment, seeking to prevent and manage chemotherapy complications such as febrile neutropenia, anaemia, thrombocytopenia/bleeding, thromboembolic events and nausea/vomiting, all of which are common causes of hospitalisation. These adverse events are an essential consideration under routine patient management, but particularly so during a pandemic, a setting in which clinicians aim to minimise patients' risk of infection and need for hospital visits. Professional medical oncology societies have been providing updated guidelines to support health care professionals with the management, treatment and supportive care needs of their patients with cancer under the threat of COVID-19. This paper aims to review the recommendations made by the most prominent medical oncology societies for devising and modifying supportive care strategies during the pandemic. Cancer care has been profoundly impacted by the global pandemic of COVID-19, resulting in unprecedented challenges. Oncology societies have updated guidelines for the supportive care needs of patients with cancer under the threat of COVID-19. This paper reviews recommendations from prominent oncology societies for providing supportive care during the pandemic.
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Affiliation(s)
- M Aapro
- Genolier Cancer Centre, Clinique de Genolier, Genolier, Switzerland
| | - G H Lyman
- Hutchinson Institute for Cancer Outcomes Research, Public Health Sciences and Clinical Research Divisions, Fred Hutchinson Cancer Research Center and the University of Washington Schools of Medicine, Public Health and Pharmacy, Seattle, USA.
| | - C Bokemeyer
- Department of Oncology, Hematology & BMT with Section of Pneumology, Universitaetsklinikum Hamburg Eppendorf, Hamburg, Germany
| | - B L Rapoport
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa; The Medical Oncology Centre of Rosebank, Johannesburg, South Africa; Neutropenia, Infection and Myelosuppression Study Group (Chair), The Multinational Association for Supportive Care in Cancer, Aurora, Canada
| | | | | | - P Cornes
- Comparative Outcomes Group, Bristol, UK
| | - R Anderson
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - P Gascón
- Department of Hematology-Oncology, Laboratory of Molecular & Translational Oncology-CELLEX University of Barcelona, Barcelona, Spain
| | - N M Kuderer
- Advanced Cancer Research Group, Seattle, USA
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Easton A, Gao S, Lawton SP, Bennuru S, Khan A, Dahlstrom E, Oliveira RG, Kepha S, Porcella SF, Webster J, Anderson R, Grigg ME, Davis RE, Wang J, Nutman TB. Molecular evidence of hybridization between pig and human Ascaris indicates an interbred species complex infecting humans. eLife 2020; 9:e61562. [PMID: 33155980 PMCID: PMC7647404 DOI: 10.7554/elife.61562] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/19/2020] [Indexed: 02/06/2023] Open
Abstract
Human ascariasis is a major neglected tropical disease caused by the nematode Ascaris lumbricoides. We report a 296 megabase (Mb) reference-quality genome comprised of 17,902 protein-coding genes derived from a single, representative Ascaris worm. An additional 68 worms were collected from 60 human hosts in Kenyan villages where pig husbandry is rare. Notably, the majority of these worms (63/68) possessed mitochondrial genomes that clustered closer to the pig parasite Ascaris suum than to A. lumbricoides. Comparative phylogenomic analyses identified over 11 million nuclear-encoded SNPs but just two distinct genetic types that had recombined across the genomes analyzed. The nuclear genomes had extensive heterozygosity, and all samples existed as genetic mosaics with either A. suum-like or A. lumbricoides-like inheritance patterns supporting a highly interbred Ascaris species genetic complex. As no barriers appear to exist for anthroponotic transmission of these 'hybrid' worms, a one-health approach to control the spread of human ascariasis will be necessary.
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Affiliation(s)
- Alice Easton
- Helminth Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of HealthBethesdaUnited States
- Department of Infectious Disease Epidemiology, Imperial College LondonLondonUnited Kingdom
| | - Shenghan Gao
- Department of Biochemistry and Molecular Genetics, RNA Bioscience Initiative, University of Colorado School of MedicineAuroraUnited States
- Beijing Institute of Genomics, Chinese Academy of SciencesBeijingChina
| | - Scott P Lawton
- Epidemiology Research Unit (ERU) Department of Veterinary and Animal Sciences, Northern Faculty, Scotland’s Rural College (SRUC)InvernessUnited Kingdom
| | - Sasisekhar Bennuru
- Helminth Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of HealthBethesdaUnited States
| | - Asis Khan
- Molecular Parasitology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of HealthBethesdaUnited States
| | - Eric Dahlstrom
- Genomics Unit, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of HealthHamiltonUnited States
| | - Rita G Oliveira
- Department of Infectious Disease Epidemiology, Imperial College LondonLondonUnited Kingdom
| | - Stella Kepha
- London School of Tropical Medicine and HygieneLondonUnited Kingdom
| | - Stephen F Porcella
- Genomics Unit, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of HealthHamiltonUnited States
| | - Joanne Webster
- Department of Infectious Disease Epidemiology, Imperial College LondonLondonUnited Kingdom
- Royal Veterinary College, University of London, Department of Pathobiology and Population SciencesHertfordshireUnited Kingdom
| | - Roy Anderson
- Department of Infectious Disease Epidemiology, Imperial College LondonLondonUnited Kingdom
| | - Michael E Grigg
- Molecular Parasitology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of HealthBethesdaUnited States
| | - Richard E Davis
- Department of Biochemistry and Molecular Genetics, RNA Bioscience Initiative, University of Colorado School of MedicineAuroraUnited States
| | - Jianbin Wang
- Department of Biochemistry and Molecular Genetics, RNA Bioscience Initiative, University of Colorado School of MedicineAuroraUnited States
- Department of Biochemistry and Cellular and Molecular Biology, University of TennesseeKnoxvilleUnited States
| | - Thomas B Nutman
- Helminth Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institutes of HealthBethesdaUnited States
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Van der Wiel A, Marcus D, Niemans R, Yaromina A, Theys J, Mowday A, Ashoorzadeh A, Anderson R, Bull M, Abbattista M, Heyerick A, Guise C, Smaill J, Patterson A, Dubois L, Lambin P. OC-0562: Exploiting tumor DNA repair status and hypoxia with CP-506, a novel hypoxia-activated prodrug. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00584-3] [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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Anderson R, Wieworka J, Hendricks-Jackson L. Emergency Response Preparation in a New Outpatient Proton Center. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rozen G, Rogers P, Chander S, Anderson R, McNally O, Umstad M, Winship A, Hutt K, Teh WT, Dobrotwir A, Hart R, Ledger W, Stern K. Clinical summary guide: reproduction in women with previous abdominopelvic radiotherapy or total body irradiation. Hum Reprod Open 2020; 2020:hoaa045. [PMID: 33134561 PMCID: PMC7585646 DOI: 10.1093/hropen/hoaa045] [Citation(s) in RCA: 13] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/13/2020] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION What is the evidence to guide the management of women who wish to conceive following abdominopelvic radiotherapy (AP RT) or total body irradiation (TBI)? SUMMARY ANSWER Pregnancy is possible, even following higher doses of post-pubertal uterine radiation exposure; however, it is associated with adverse reproductive sequelae and pregnancies must be managed in a high-risk obstetric unit. WHAT IS KNOWN ALREADY In addition to primary ovarian insufficiency, female survivors who are treated with AP RT and TBI are at risk of damage to the uterus. This may impact on its function and manifest as adverse reproductive sequelae. STUDY DESIGN SIZE DURATION A review of the literature was carried out and a multidisciplinary working group provided expert opinion regarding assessment of the uterus and obstetric management. PARTICIPANTS/MATERIALS SETTING METHODS Reproductive outcomes for postpubertal women with uterine radiation exposure in the form of AP RT or TBI were reviewed. This included Pubmed listed peer-reviewed publications from 1990 to 2019, and limited to English language.. MAIN RESULTS AND THE ROLE OF CHANCE The prepubertal uterus is much more vulnerable to the effects of radiation than after puberty. Almost all available information about the impact of radiation on the uterus comes from studies of radiation exposure during childhood or adolescence.An uncomplicated pregnancy is possible, even with doses as high as 54 Gy. Therefore, tumour treatment doses alone cannot at present be used to accurately predict uterine damage. LIMITATIONS REASONS FOR CAUTION Much of the data cannot be readily extrapolated to adult women who have had uterine radiation and the publications concerning adult women treated with AP RT are largely limited to case reports. WIDER IMPLICATIONS OF THE FINDINGS This analysis offers clinical guidance and assists with patient counselling. It is important to include patients who have undergone AP RT or TBI in prospective studies to provide further evidence regarding uterine function, pregnancy outcomes and correlation of imaging with clinical outcomes. STUDY FUNDING/COMPETING INTERESTS This study received no funding and there are no conflicts of interest. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- G Rozen
- Reproductive Services, Royal Women's Hospital, Parkville, VIC, Australia.,Department of Obstetrics and Gynaecology, Royal Women's Hospital, University of Melbourne and Gynaecology Research Centre, Parkville, VIC, Australia.,Melbourne IVF, East Melbourne, VIC, Australia
| | - P Rogers
- Department of Obstetrics and Gynaecology, Royal Women's Hospital, University of Melbourne and Gynaecology Research Centre, Parkville, VIC, Australia
| | - S Chander
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - R Anderson
- University of Edinburgh, MRC Centre for Reproductive Health Queens Medical Research Institute, Edinburgh, UK
| | - O McNally
- Royal Women's Hospital, Gynae-Oncology Unit, Parkville, VIC, Australia
| | - M Umstad
- Department of Maternal Fetal Medicine, Royal Women's Hospital, Parkville, VIC, Australia.,Department of Obstetrics and Gynaecology, University of Melbourne School of BioSciences, Melbourne, VIC, Australia
| | - A Winship
- Development and Stem Cells Program, Monash University Monash Biomedicine Discovery Institute, Clayton, VIC, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
| | - K Hutt
- Development and Stem Cells Program, Monash University Monash Biomedicine Discovery Institute, Clayton, VIC, Australia
| | - W T Teh
- Reproductive Services, Royal Women's Hospital, Parkville, VIC, Australia.,Department of Obstetrics and Gynaecology, Royal Women's Hospital, University of Melbourne and Gynaecology Research Centre, Parkville, VIC, Australia.,Melbourne IVF, East Melbourne, VIC, Australia
| | - A Dobrotwir
- Royal Women's Hospital, Radiology, Parkville, VIC, Australia
| | - R Hart
- University of Western Australia, School of Womens and Infants Health University of Western Australia King Edward Memorial Hospital Subiaco, Perth, WA, Australia
| | - W Ledger
- University of New South Wales, School of Womens and Childrens Health Level 1, Royal Hospital for Women, Sydney, NSW, Australia
| | - K Stern
- Reproductive Services, Royal Women's Hospital, Parkville, VIC, Australia.,Melbourne IVF, East Melbourne, VIC, Australia
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Rapoport B, Steel H, Smit T, Heyman L, Theron A, Hlatswayo N, Kwofie L, Jooste L, Benn C, Nayler S, Anderson R. 37P Dysregulation of soluble immune checkpoint proteins in newly diagnosed early breast cancer patients. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2196] [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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Feldman C, Anderson R. Brief review: Cardiac complications and platelet activation in COVID-19 infection. Afr J Thorac Crit Care Med 2020; 26:10.7196/AJTCCM.2020.v26i3.107. [PMID: 34235425 PMCID: PMC7433708 DOI: 10.7196/ajtccm.2020.v26i3.107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Accepted: 07/23/2020] [Indexed: 12/19/2022] Open
Abstract
COVID-19 pneumonia, much like that of bacterial and viral community-acquired pneumonia before it, is accompanied by a high rate of cardio- and cerebrovascular events that are associated with an increased risk of complications and a greater mortality. Although the mechanisms underlying the pathogenesis of these adverse events are not entirely clear and may be multifactorial, platelets appear to have a prominent aetiologic role and this, together with an overview of the clinical evidence, forms the basis of this short review.
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Affiliation(s)
- C Feldman
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - R Anderson
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Rapoport B, Galon J, Nayler S, Fugon A, Martel M, Mlecnik B, Benn C, Moosa F, Anderson R. 1984P Tumour infiltrating lymphocytes in early breast cancer: High levels of CD3, CD8 cells and Immunoscore® are associated with pathological CR and time to progression in patients undergoing neo-adjuvant chemotherapy. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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