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Jiang SY, Wright CM, Hinton A, Green G, Moyer AR, Gerstbacher D, Kushner LE, Wang ME, Schor JS, Trietsch J, Chu D, McGhee S. Lime-Induced Phytophotodermatitis: A Rash That Requires Explicit Questioning. J Allergy Clin Immunol Pract 2024:S2213-2198(24)00212-5. [PMID: 38506786 DOI: 10.1016/j.jaip.2024.02.035] [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] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/21/2024]
Affiliation(s)
- Shirley Yunqi Jiang
- Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif.
| | - Cary Michael Wright
- Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
| | - Andrea Hinton
- Department of Dermatology, Stanford University School of Medicine, Stanford, Calif
| | - Gabrielle Green
- Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
| | - Amanda Renee Moyer
- Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
| | - Dana Gerstbacher
- Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
| | - Lauren E Kushner
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
| | - Marie E Wang
- Division of Pediatric Hospital Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
| | | | - James Trietsch
- Division of Pediatric Hospital Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
| | - Derek Chu
- Department of Dermatology, Stanford University School of Medicine, Stanford, Calif
| | - Sean McGhee
- Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, Stanford, Calif
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Riggioni C, Ricci C, Moya B, Wong D, van Goor E, Bartha I, Buyuktiryaki B, Giovannini M, Jayasinghe S, Jaumdally H, Marques-Mejias A, Piletta-Zanin A, Berbenyuk A, Andreeva M, Levina D, Iakovleva E, Roberts G, Chu D, Peters R, du Toit G, Skypala I, Santos AF. Systematic review and meta-analyses on the accuracy of diagnostic tests for IgE-mediated food allergy. Allergy 2024; 79:324-352. [PMID: 38009299 DOI: 10.1111/all.15939] [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: 07/11/2023] [Revised: 10/19/2023] [Accepted: 10/22/2023] [Indexed: 11/28/2023]
Abstract
The European Academy of Allergy and Clinical Immunology (EAACI) is updating the Guidelines on Food Allergy Diagnosis. We aimed to undertake a systematic review of the literature with meta-analyses to assess the accuracy of diagnostic tests for IgE-mediated food allergy. We searched three databases (Cochrane CENTRAL (Trials), MEDLINE (OVID) and Embase (OVID)) for diagnostic test accuracy studies published between 1 October 2012 and 30 June 2021 according to a previously published protocol (CRD42021259186). We independently screened abstracts, extracted data from full texts and assessed risk of bias with QUADRAS 2 tool in duplicate. Meta-analyses were undertaken for food-test combinations for which three or more studies were available. A total of 149 studies comprising 24,489 patients met the inclusion criteria and they were generally heterogeneous. 60.4% of studies were in children ≤12 years of age, 54.3% were undertaken in Europe, ≥95% were conducted in a specialized paediatric or allergy clinical setting and all included oral food challenge in at least a percentage of enrolled patients, in 21.5% double-blind placebo-controlled food challenges. Skin prick test (SPT) with fresh cow's milk and raw egg had high sensitivity (90% and 94%) for milk and cooked egg allergies. Specific IgE (sIgE) to individual components had high specificity: Ara h 2-sIgE had 92%, Cor a 14-sIgE 95%, Ana o 3-sIgE 94%, casein-sIgE 93%, ovomucoid-sIgE 92/91% for the diagnosis of peanut, hazelnut, cashew, cow's milk and raw/cooked egg allergies, respectively. The basophil activation test (BAT) was highly specific for the diagnosis of peanut (90%) and sesame (93%) allergies. In conclusion, SPT and specific IgE to extracts had high sensitivity whereas specific IgE to components and BAT had high specificity to support the diagnosis of individual food allergies.
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Affiliation(s)
- Carmen Riggioni
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore City, Singapore
- Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore City, Singapore
| | - Cristian Ricci
- Africa Unit for Transdisciplinary Health Research (AUTHeR), North-WEst University, Potchefstroom, South Africa
| | - Beatriz Moya
- Department of Allergy, Hospital Universitario 12 de Octubre, Madrid, Spain
- Instituto de Investigación Sanitaria, Hospital 12 de Octubre (imas12), Madrid, Spain
| | - Dominic Wong
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Evi van Goor
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Elkerliek Hospital, Helmond, The Netherlands
| | - Irene Bartha
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Betul Buyuktiryaki
- Division of Pediatric Allergy, Department of Pediatrics, Koc University School of Medicine, Istanbul, Turkey
| | - Mattia Giovannini
- Allergy Unit, Meyer Children's Hospital IRCCS, Florence, Italy
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Sashini Jayasinghe
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Hannah Jaumdally
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, UK
| | - Andreina Marques-Mejias
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Alexandre Piletta-Zanin
- Division of Pediatric Specialties, Department of Women, Children and Adolescents, Geneva University Hospitals, Geneva, Switzerland
| | - Anna Berbenyuk
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Margarita Andreeva
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Daria Levina
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Ekaterina Iakovleva
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Graham Roberts
- Clinical and Experimental Sciences and Human Development in Health, Faculty of Medicine, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK
- The David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Newport, UK
| | - Derek Chu
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Rachel Peters
- Murdoch Children's Research Institute Melbourne, Melbourne, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - George du Toit
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Isabel Skypala
- National Heart & Lung Institute, Imperial College London, London, UK
- Department of Allergy & Clinical Immunology, Royal Brompton & Harefield NHS Foundation Trust, London, UK
| | - Alexandra F Santos
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, UK
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Santos AF, Riggioni C, Agache I, Akdis CA, Akdis M, Alvarez-Perea A, Alvaro-Lozano M, Ballmer-Weber B, Barni S, Beyer K, Bindslev-Jensen C, Brough HA, Buyuktiryaki B, Chu D, Del Giacco S, Dunn-Galvin A, Eberlein B, Ebisawa M, Eigenmann P, Eiwegger T, Feeney M, Fernandez-Rivas M, Fisher HR, Fleischer DM, Giovannini M, Gray C, Hoffmann-Sommergruber K, Halken S, Hourihane JO, Jones CJ, Jutel M, Knol E, Konstantinou GN, Lack G, Lau S, Marques Mejias A, Marchisotto MJ, Meyer R, Mortz CG, Moya B, Muraro A, Nilsson C, Lopes de Oliveira LC, O'Mahony L, Papadopoulos NG, Perrett K, Peters RL, Podesta M, Poulsen LK, Roberts G, Sampson HA, Schwarze J, Smith P, Tham EH, Untersmayr E, Van Ree R, Venter C, Vickery BP, Vlieg-Boerstra B, Werfel T, Worm M, Du Toit G, Skypala I. EAACI guidelines on the diagnosis of IgE-mediated food allergy. Allergy 2023; 78:3057-3076. [PMID: 37815205 DOI: 10.1111/all.15902] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 10/11/2023]
Abstract
This European Academy of Allergy and Clinical Immunology guideline provides recommendations for diagnosing IgE-mediated food allergy and was developed using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach. Food allergy diagnosis starts with an allergy-focused clinical history followed by tests to determine IgE sensitization, such as serum allergen-specific IgE (sIgE) and skin prick test (SPT), and the basophil activation test (BAT), if available. Evidence for IgE sensitization should be sought for any suspected foods. The diagnosis of allergy to some foods, such as peanut and cashew nut, is well supported by SPT and serum sIgE, whereas there are less data and the performance of these tests is poorer for other foods, such as wheat and soya. The measurement of sIgE to allergen components such as Ara h 2 from peanut, Cor a 14 from hazelnut and Ana o 3 from cashew can be useful to further support the diagnosis, especially in pollen-sensitized individuals. BAT to peanut and sesame can be used additionally. The reference standard for food allergy diagnosis is the oral food challenge (OFC). OFC should be performed in equivocal cases. For practical reasons, open challenges are suitable in most cases. Reassessment of food allergic children with allergy tests and/or OFCs periodically over time will enable reintroduction of food into the diet in the case of spontaneous acquisition of oral tolerance.
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Affiliation(s)
- Alexandra F Santos
- Department of Women and Children's Health (Pediatric Allergy), Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Carmen Riggioni
- Department of Allergy and Clinical Immunology, Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Ioana Agache
- Faculty of Medicine, Transylvania University, Brasov, Romania
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University Zurich, Davos, Switzerland
| | - Mubeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University Zurich, Davos, Switzerland
| | - Alberto Alvarez-Perea
- Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Gregorio Marañón Health Research Institute, Madrid, Spain
| | - Montserrat Alvaro-Lozano
- Pediatric Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain
- Institut de Recerca Sant Joan de Déu, Universitat de Barcelona, Barcelona, Spain
| | - Barbara Ballmer-Weber
- Clinic for Dermatology and Allergology, Kantonsspital St. Gallen, St. Gallen, Switzerland
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Simona Barni
- Allergy Unit, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Kirsten Beyer
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Carsten Bindslev-Jensen
- Department of Dermatology and Allergy Centre, Odense Research Centre for Anaphylaxis (ORCA), Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Helen A Brough
- Department of Women and Children's Health (Pediatric Allergy), Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Betul Buyuktiryaki
- Division of Pediatric Allergy, Department of Pediatrics, Koc University School of Medicine, Istanbul, Turkey
| | - Derek Chu
- McMaster University, Ontario, Hamilton, Canada
| | - Stefano Del Giacco
- Department of Medical Sciences and Public Health and Unit of Allergy and Clinical Immunology, University Hospital "Duilio Casula", University of Cagliari, Cagliari, Italy
| | - Audrey Dunn-Galvin
- Paediatrics and Child Health, INFANT Centre, HRB-CRF, University College Cork, Cork, Ireland
- Paediatrics and Child Health, Royal College of Surgeons in Ireland, Children's Health Ireland, Dublin, Ireland
| | - Bernadette Eberlein
- Department of Dermatology and Allergy Biederstein, TUM School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Motohiro Ebisawa
- Clinical Research Center for Allergy and Rheumatology, National Hospital Organization Sagamihara National Hospital, Kanagawa, Japan
| | - Philippe Eigenmann
- Department of Pediatrics, Gynecology and Obstetrics, University Hospitals of Geneva, Geneva, Switzerland
| | - Thomas Eiwegger
- Translational Medicine Program, Research Institute, Hospital for Sick Children, Ontario, Toronto, Canada
- Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Ontario, Toronto, Canada
- Karl Landsteiner University of Health Sciences, Krems an der Donau, Austria
- Department of Pediatric and Adolescent Medicine, University Hospital St. Pölten, St.Pölten, Austria
| | - Mary Feeney
- Department of Women and Children's Health (Pediatric Allergy), Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
| | - Montserrat Fernandez-Rivas
- Allergy Department, Hospital Clinico San Carlos, Madrid, Spain
- Facultad de Medicina, IdISSC, ARADyAL, Universidad Complutense, Madrid, Spain
| | - Helen R Fisher
- Department of Women and Children's Health (Pediatric Allergy), Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
| | - David M Fleischer
- Children's Hospital Colorado, University of Colorado School of Medicine, Colorado, Aurora, USA
| | - Mattia Giovannini
- Allergy Unit, Meyer Children's Hospital IRCCS, Florence, Italy
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Claudia Gray
- Red Cross Children's Hospital and Kidsallergy Centre, Cape Town, South Africa
- Department of Paediatrics, University of Cape Town, Cape Town, South Africa
| | - Karin Hoffmann-Sommergruber
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Susanne Halken
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
| | | | - Christina J Jones
- Faculty of Medical Sciences, School of Psychology, University of Surrey, Surrey, UK
| | - Marek Jutel
- Department of Clinical Immunology, Wrocław Medical University, ALL-MED Medical Research Institute, Wroclaw, Poland
| | - Edward Knol
- Department of Dermatology/Allergology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - George N Konstantinou
- Department of Allergy and Clinical Immunology, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Gideon Lack
- Department of Women and Children's Health (Pediatric Allergy), Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Susanne Lau
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Andreina Marques Mejias
- Department of Women and Children's Health (Pediatric Allergy), Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | | | - Rosan Meyer
- Department of Medicine, Imperial College, London, UK
- Department of Nutrition and Dietetics, Winchester University, Winchester, UK
- Department of Medicine, KU Leuven, Leuven, Belgium
| | - Charlotte G Mortz
- Department of Dermatology and Allergy Centre, Odense Research Centre for Anaphylaxis (ORCA), Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Beatriz Moya
- Department of Allergy, Hospital Universitario 12 de Octubre, Madrid, Spain
- Instituto de Investigación Sanitaria, Hospital 12 de Octubre (imas12), Madrid, Spain
| | - Antonella Muraro
- Food Allergy Referral Centre, Padua University Hospital, Padua, Italy
| | - Caroline Nilsson
- Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden
- Sachs Children and Youth Hospital, South Hospital, Stockholm, Sweden
| | | | - Liam O'Mahony
- Department of Medicine, School of Microbiology, APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Nikolaos G Papadopoulos
- Allergy Department, 2nd Pediatric Clinic, University of Athens, Athens, Greece
- Lydia Becker Institute, University of Manchester, Manchester, UK
| | - Kirsten Perrett
- Department of Paediatrics, University of Melbourne, Victoria, Parkville, Australia
- Department of Allergy and Immunology, Royal Children's Hospital, Victoria, Parkville, Australia
- Population Allergy Research Group, Murdoch Children's Research Institute, Victoria, Parkville, Australia
| | - Rachel L Peters
- Department of Paediatrics, University of Melbourne, Victoria, Parkville, Australia
- Department of Allergy and Immunology, Royal Children's Hospital, Victoria, Parkville, Australia
- Population Allergy Research Group, Murdoch Children's Research Institute, Victoria, Parkville, Australia
| | - Marcia Podesta
- EFA - European Federation of Allergy and Airways Diseases Patients' Associations, Brussels, Belgium
| | - Lars K Poulsen
- Allergy Clinic, Copenhagen University Hospital at Herlev-Gentofte, Copenhagen, Denmark
| | - Graham Roberts
- Department of Paediatric Allergy and Respiratory Medicine, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, Southampton, UK
- David Hide Asthma and Allergy Centre, St Mary Hospital, Isle of Wight, UK
| | - Hugh A Sampson
- Division of Allergy and Immunology, Department of Pediatrics, Jaffe Food Allergy Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States
| | - Jürgen Schwarze
- Child Life and Health, Centre for Inflammation Research, Institute for Regeneration and Repair, The University of Edinburgh, Edinburgh, UK
| | - Peter Smith
- Clinical Medicine, Griffith University, Queensland, Southport, Australia
- Queensland Allergy Services Private Practice, Queensland, Southport, Australia
| | - Elizabeth Huiwen Tham
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Khoo Teck Puat-National University Children's Medical Institute, National University Health System (NUHS), Singapore, Singapore
- Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Eva Untersmayr
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Ronald Van Ree
- Departments of Experimental Immunology and of Otorhinolaryngoloy, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Carina Venter
- Section of Allergy and Clinical Immunology, Children's Hospital Colorado, University of Colorado, Colorado, Aurora, USA
| | - Brian P Vickery
- Emory University School of Medicine and Children's Healthcare of Atlanta, Georgia, Atlanta, USA
| | - Berber Vlieg-Boerstra
- Department of Paediatrics, OLVG Hospital, Amsterdam, the Netherlands
- Rijnstate Allergy Centre, Rijnstate Hospital, Arnhem, The Netherlands
- Vlieg Dieticians, Private Practice for Dietary Management of Food Allergy, Arnhem, The Netherlands
| | - Thomas Werfel
- Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Margitta Worm
- Division of Allergy and immunology, Department of Dermatology, Venerology and Allergology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - George Du Toit
- Department of Women and Children's Health (Pediatric Allergy), Faculty of Life Sciences and Medicine, School of Life Course Sciences, King's College London, London, UK
- Children's Allergy Service, Evelina London Children's Hospital, Guy's and St Thomas' Hospital, London, UK
| | - Isabel Skypala
- Royal Brompton & Harefield Hospitals, Part of Guys & St Thomas NHS Foundation Trust, London, UK
- Department of Inflammation and Repair, Imperial College, London, UK
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Zeraatkar D, Pitre T, Diaz-Martinez JP, Chu D, Rochwerg B, Lamontagne F, Kum E, Qasim A, Bartoszko JJ, Brignardello-Peterson R. Impact of Allocation Concealment and Blinding in Trials Addressing Treatments for COVID-19: A Methods Study. Am J Epidemiol 2023; 192:1678-1687. [PMID: 37254775 PMCID: PMC10558187 DOI: 10.1093/aje/kwad131] [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: 07/26/2022] [Revised: 03/19/2023] [Accepted: 05/26/2023] [Indexed: 06/01/2023] Open
Abstract
We aimed to assess the impact of allocation concealment and blinding on the results of coronavirus disease 2019 (COVID-19) trials, using the World Health Organization COVID-19 database (to February 2022). We identified 488 randomized trials comparing drug therapeutics with placebo or standard care in patients with COVID-19. We performed random-effects meta-regressions comparing the results of trials with and without allocation concealment and blinding of health-care providers and patients. We found that, compared with trials with allocation concealment, trials without allocation concealment may estimate treatments to be more beneficial for mortality, mechanical ventilation, hospital admission, duration of hospitalization, and duration of mechanical ventilation, but results were imprecise. We did not find compelling evidence that, compared with trials with blinding, trials without blinding produce consistently different results for mortality, mechanical ventilation, and duration of hospitalization. We found that trials without blinding may estimate treatments to be more beneficial for hospitalizations and duration of mechanical ventilation. We did not find compelling evidence that COVID-19 trials in which health-care providers and patients are blinded produce different results from trials without blinding, but trials without allocation concealment estimate treatments to be more beneficial compared with trials with allocation concealment. Our study suggests that lack of blinding may not always bias results but that evidence users should remain skeptical of trials without allocation concealment.
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Affiliation(s)
- Dena Zeraatkar
- Correspondence to Dena Zeraatkar, Department of Anesthesia, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8 Canada (e-mail )
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Boulos L, Curran JA, Gallant A, Wong H, Johnson C, Delahunty-Pike A, Saxinger L, Chu D, Comeau J, Flynn T, Clegg J, Dye C. Effectiveness of face masks for reducing transmission of SARS-CoV-2: a rapid systematic review. Philos Trans A Math Phys Eng Sci 2023; 381:20230133. [PMID: 37611625 PMCID: PMC10446908 DOI: 10.1098/rsta.2023.0133] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 05/23/2023] [Indexed: 08/25/2023]
Abstract
This rapid systematic review of evidence asks whether (i) wearing a face mask, (ii) one type of mask over another and (iii) mandatory mask policies can reduce the transmission of SARS-CoV-2 infection, either in community-based or healthcare settings. A search of studies published 1 January 2020-27 January 2023 yielded 5185 unique records. Due to a paucity of randomized controlled trials (RCTs), observational studies were included in the analysis. We analysed 35 studies in community settings (three RCTs and 32 observational) and 40 in healthcare settings (one RCT and 39 observational). Ninety-five per cent of studies included were conducted before highly transmissible Omicron variants emerged. Ninety-one per cent of observational studies were at 'critical' risk of bias (ROB) in at least one domain, often failing to separate the effects of masks from concurrent interventions. More studies found that masks (n = 39/47; 83%) and mask mandates (n = 16/18; 89%) reduced infection than found no effect (n = 8/65; 12%) or favoured controls (n = 1/65; 2%). Seven observational studies found that respirators were more protective than surgical masks, while five found no statistically significant difference between the two mask types. Despite the ROB, and allowing for uncertain and variable efficacy, we conclude that wearing masks, wearing higher quality masks (respirators), and mask mandates generally reduced SARS-CoV-2 transmission in these study populations. This article is part of the theme issue 'The effectiveness of non-pharmaceutical interventions on the COVID-19 pandemic: the evidence'.
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Affiliation(s)
- Leah Boulos
- Maritime SPOR SUPPORT Unit, Nova Scotia Health, 5790 University Avenue, Halifax, Nova Scotia B3H 1V7, Canada
- IWK Health Centre, 5980 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
| | - Janet A. Curran
- IWK Health Centre, 5980 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
- School of Nursing, Dalhousie University, 6299 South Street, Halifax, Nova Scotia B3H 4R2, Canada
| | - Allyson Gallant
- IWK Health Centre, 5980 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
- Faculty of Health, Dalhousie University, 6299 South Street, Halifax, Nova Scotia B3H 4R2, Canada
| | - Helen Wong
- IWK Health Centre, 5980 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
- Faculty of Health, Dalhousie University, 6299 South Street, Halifax, Nova Scotia B3H 4R2, Canada
| | - Catherine Johnson
- IWK Health Centre, 5980 University Avenue, Halifax, Nova Scotia B3K 6R8, Canada
- Department of Health and Rehabilitation Services, Western University, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | | | - Lynora Saxinger
- Division of Infectious Diseases, Departments of Medicine and Medical Microbiology and Immunology, University of Alberta, 116 Street & 85 Avenue, Edmonton, Alberta T6G 2R3, Canada
| | - Derek Chu
- Department of Health Research Methods, Evidence and Impact, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- Department of Medicine, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- The Research Institute of St Joe's Hamilton, St Joseph's Healthcare Hamilton, 50 Charlton Avenue East, Hamilton, Ontario L8N A46, Canada
| | - Jeannette Comeau
- Division of Infectious Diseases, Dalhousie University, 6299 South Street, Halifax, Nova Scotia B3H 4R2, Canada
| | - Trudy Flynn
- Patient/Public Partner, University of Oxford, 11A Mansfield Road, Oxford OX1 3SZ, UK
| | - Julie Clegg
- Patient/Public Partner, University of Oxford, 11A Mansfield Road, Oxford OX1 3SZ, UK
| | - Christopher Dye
- Department of Biology, University of Oxford, 11A Mansfield Road, Oxford OX1 3SZ, UK
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Brignardello-Petersen R, Tomlinson G, Florez I, Rind DM, Chu D, Morgan R, Mustafa RA, Schünemann H, Guyatt GH. Grading of recommendations assessment, development, and evaluation concept article 5: addressing intransitivity in a network meta-analysis. J Clin Epidemiol 2023; 160:151-159. [PMID: 37348573 DOI: 10.1016/j.jclinepi.2023.06.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 04/18/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/24/2023]
Abstract
OBJECTIVES This article describes considerations for addressing intransitivity when assessing the certainty of the evidence from network meta-analysis (NMA) using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. Intransitivity is induced by effect modification, that is, when the magnitude of the effect between an intervention and outcome differs depending on the level of another factor. STUDY DESIGN AND SETTING To develop this GRADE concept paper, the lead authors conducted iterative discussions, computer simulations, and presentations to the GRADE project group and at GRADE working group meetings. The GRADE Working Group formally approved the article in July 2022. RESULTS NMA authors can have a higher or a lower threshold to rate down the certainty of the evidence due to intransitivity, which depends on the extent of their concerns regarding the trustworthiness of indirect comparisons, and their view of the relative problems with rating down excessively or insufficiently. NMA authors should consider three main factors when addressing intransitivity: the credibility of effect modification, the strength of the effect modification, and the distribution of effect modifiers across the direct comparisons. To avoid double counting limitations of the evidence, authors should consider the relationship between intransitivity and other GRADE domains. CONCLUSION NMA authors face theoretic and pragmatic challenges and in most situations need to assess intransitivity without the availability of empirical data. Thus, explicitness regarding perspective is crucial.
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Affiliation(s)
- Romina Brignardello-Petersen
- Department of Health Research Methods, Evidence and Impact, McMaster University, HSC-2C, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada.
| | - George Tomlinson
- Department of Medicine, University Health Network, 200 Elizabeth Street, Toronto, Ontario M5G 2C4, Canada
| | - Ivan Florez
- Department of Pediatrics, University of Antioquia, Calle 67 # 53-108, Medellin 050001, Colombia; School of Rehabilitation Science, McMaster University, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada
| | - David M Rind
- Institute for Clinical and Economic Review, 14 Beacon Street, Boston, MA 02108, USA
| | - Derek Chu
- Department of Health Research Methods, Evidence and Impact, McMaster University, HSC-2C, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada
| | - Rebecca Morgan
- Department of Health Research Methods, Evidence and Impact, McMaster University, HSC-2C, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada
| | - Reem A Mustafa
- Deparment of Internal Medicine and Department of Population Health, Univeristy of Kansas Medical Center, MS3002, 3901 Rainbow Blvd, Kansas City, KS 66160, USA
| | - Holger Schünemann
- Department of Health Research Methods, Evidence and Impact, McMaster University, HSC-2C, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada; Department of Medicine, McMaster University, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada; Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, Milano 20090, Italy
| | - Gordon H Guyatt
- Department of Health Research Methods, Evidence and Impact, McMaster University, HSC-2C, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada; Department of Medicine, McMaster University, 1280 Main St West, Hamilton, Ontario L8S 4L8, Canada
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Bel Imam M, Stikas CV, Guha P, Chawes BL, Chu D, Greenhawt M, Khaleva E, Munblit D, Nekliudov N, van de Veen W, Schoos AMM. Outcomes reported in randomized controlled trials for mixed and non-IgE-mediated food allergy: Systematic review. Clin Exp Allergy 2023; 53:526-535. [PMID: 36880564 DOI: 10.1111/cea.14304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 03/08/2023]
Abstract
BACKGROUND Mixed and non-IgE-mediated food allergy is a subset of immune-mediated adverse food reactions that can impose a major burden on the quality of life of affected patients and their families. Clinical trials to study these diseases are reliant upon consistent and valid outcome measures that are relevant to both patients and clinicians, but the degree to which such stringent outcome reporting takes place is poorly studied. OBJECTIVE As part of the Core Outcome Measures for Food Allergy (COMFA) project, we identified outcomes reported in randomized clinical trials (RCT) of treatments for mixed or non-IgE-mediated food allergy. DESIGN In this systematic review, we searched the Ovid, MEDLINE and Embase databases for RCTs in children or adults investigating treatments for food protein-induced enterocolitis syndrome, food protein-induced allergic proctocolitis, food protein-induced enteropathy and eosinophilic gastrointestinal disorders including eosinophilic esophagitis [EoE], eosinophilic gastritis and eosinophilic colitis published until 14 October 2022. RESULTS Twenty-six eligible studies were identified, with 23 focused on EoE (88%). Most interventions were corticosteroids or monoclonal antibodies. All EoE studies assessed patient-reported dysphagia, usually using a non-validated questionnaire. Twenty-two of 23 EoE studies used peak tissue eosinophil count as the primary outcome, usually using a non-validated assessment method, and other immunological markers were only exploratory. Thirteen (57%) EoE studies reported endoscopic outcomes of which six used a validated scoring tool recently recommended as a core outcome for EoE trials. Funding source was not obviously associated with likelihood of an RCT reporting mechanistic versus patient-reported outcomes. Only 3 (12%) RCTs concerned forms of food allergy other than EoE, and they reported on fecal immunological markers and patient-reported outcomes. CONCLUSIONS Outcomes measured in clinical trials of EoE and non-IgE-mediated food allergy are heterogeneous and largely non-validated. Core outcomes for EoE have been developed and need to be used in future trials. For other forms of mixed or non-IgE-mediated food allergies, core outcome development is needed to support the development of effective treatments. SYSTEMATIC REVIEW REGISTRATION OSF public registry DOI:10.17605/OSF.IO/AZX8S.
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Affiliation(s)
- Manal Bel Imam
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | | | - Payal Guha
- School of Medicine, Imperial College London, London, UK
| | - Bo L Chawes
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Derek Chu
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada.,Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,The Research Institute of St Joe's Hamilton, Hamilton, Ontario, Canada
| | - Matthew Greenhawt
- Department of Pediatrics, Section of Allergy and Immunology, Children's Hospital Colorado, University of Colorado Denver School of Medicine, Aurora, Colorado, USA
| | - Ekaterina Khaleva
- Clinical and Experimental Sciences and Human Development, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Daniel Munblit
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.,Inflammation, Repair and Development Section, NHLI, Imperial College London, London, UK
| | - Nikita Nekliudov
- Department of Paediatrics and Paediatric Infectious Diseases, Institute of Child's Health, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Willem van de Veen
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Ann-Marie M Schoos
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark.,Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
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Chen X, Wang K, Chu D, Zhu Y, Zhang W, Cao H, Xie W, Lu C, Li X. [Forsythiaside B inhibits cerebral ischemia/reperfusion-induced oxidative stress injury in mice via the AMPK/DAF-16/FOXO3 pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:199-205. [PMID: 36946038 PMCID: PMC10034537 DOI: 10.12122/j.issn.1673-4254.2023.02.06] [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] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE To study the protective effect of forsythiaside B (FB) against cerebral oxidative stress injury induced by cerebral ischemia/reperfusion (I/R) in mice and explore the underlying mechanism. METHODS Ninety C57BL/6 mice were randomized into sham-operated group, middle cerebral artery occlusion (MCAO) model group, and low-, medium and highdose (10, 20, and 40 mg/kg, respectively) FB groups. The expression levels of MDA, ROS, PCO, 8-OHdG, SOD, GSTα4, CAT and GPx in the brain tissue of the mice were detected using commercial kits, and those of AMPK, P-AMPK, DAF-16, FOXO3 and P-FOXO3 were detected with Western blotting. Compound C (CC), an AMPK inhibitor, was used to verify the role of the AMPK pathway in mediating the therapeutic effect of FB. In another 36 C57BL/6 mice randomized into 4 sham-operated group, MCAO model group, FB (40 mg/kg) treatment group, FB+CC (10 mg/kg) treatment group, TTC staining was used to examine the volume of cerebral infarcts, and the levels of ROS and SOD in the brain were detected; the changes in the protein expressions of AMPK, P-AMPK, DAF-16, FOXO3 and P-FOXO3 in the brain tissue were detected using Western blotting. RESULTS In mice with cerebral IR injury, treatment with FB significantly reduced the levels of ROS, MDA, PCO and 8-OHdG, increased the activities of antioxidant enzymes SOD, GSTα4, CAT and GPx, and enhanced phosphorylation of AMPK and FOXO3 and DAF-16 protein expression in the brain tissue (P < 0.01). Compared with FB treatment alone, the combined treatment with FB and CC significantly reduced phosphorylation of AMPK and FOXO3, lowered expression of DAF-16 and SOD activity, and increased cerebral infarction volume and ROS level in the brain tissue of the mice (P < 0.01). CONCLUSION FB inhibits oxidative stress injury caused by cerebral I/R in mice possibly by enhancing AMPK phosphorylation, promoting the downstream DAF-16 protein expression and FOXO3 phosphorylation, increasing the expression of antioxidant enzymes, and reducing ROS level in the brain tissue.
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Affiliation(s)
- X Chen
- Department of Critical Care Medicine, Hanbin District Third People's Hospital, Ankang 725000, China
| | - K Wang
- Department of Critical Care Medicine, Hanbin District Third People's Hospital, Ankang 725000, China
| | - D Chu
- Department of Critical Care Medicine, Hanbin District Third People's Hospital, Ankang 725000, China
| | - Y Zhu
- Department of Critical Care Medicine, Hanbin District Third People's Hospital, Ankang 725000, China
| | - W Zhang
- Department of Critical Care Medicine, Hanbin District Third People's Hospital, Ankang 725000, China
| | - H Cao
- Department of Critical Care Medicine, Hanbin District Third People's Hospital, Ankang 725000, China
| | - W Xie
- Department of Neurosurgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - C Lu
- Department of Neurosurgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - X Li
- Department of Neurosurgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
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Perlman L, Gabrielli S, Clarke A, Colli LD, Colli MD, Morris J, Gravel J, Lim R, Chan E, Goldman R, O'Keefe A, Gerdts J, Chu D, Upton J, Hochstadter E, Moisan J, Bretholz A, McCusker C, Zhang X, Protudjer J, Abrams E, Simons E, Ben-Shoshan M. Wheat-Induced Anaphylaxis in Pediatric Patients from the Cross-Canada Anaphylaxis Registry (C-CARE): Clinical Characteristics and Management. J Allergy Clin Immunol 2023. [DOI: 10.1016/j.jaci.2022.12.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Sehayek D, Clarke A, Abrams E, Bretholz A, Chan E, Chu D, Gerdts J, Goldman R, Hochstadter E, Lim R, McCusker C, Moisan J, Morris J, O’Keefe A, Protudjer J, Simons E, Upton J, Zhang X, Ben-Shoshan M. Effects of Prescription Medications on Clinical Outcomes in Adults Presenting with Anaphylaxis. J Allergy Clin Immunol 2023. [DOI: 10.1016/j.jaci.2022.12.039] [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: 02/05/2023]
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Hall DE, Youk A, Allsup K, Kennedy K, Byard TD, Dhupar R, Chu D, Rahman AM, Wilson M, Cahalin LP, Afilalo J, Forman DE. Preoperative Rehabilitation Is Feasible in the Weeks Prior to Surgery and Significantly Improves Functional Performance. J Frailty Aging 2023; 12:267-276. [PMID: 38008976 PMCID: PMC10683858 DOI: 10.14283/jfa.2022.42] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
BACKGROUND Frailty is a multidimensional state of increased vulnerability. Frail patients are at increased risk for poor surgical outcomes. Prior research demonstrates that rehabilitation strategies deployed after surgery improve outcomes by building strength. OBJECTIVES Examine the feasibility and impact of a novel, multi-faceted prehabilitation intervention for frail patients before surgery. DESIGN Single arm clinical trial. SETTING Veterans Affairs hospital. PARTICIPANTS Patients preparing for major abdominal, urological, thoracic, or cardiac surgery with frailty identified as a Risk Analysis Index≥30. INTERVENTION Prehabilitation started in a supervised setting to establish safety and then transitioned to home-based exercise with weekly telephone coaching by exercise physiologists. Prehabilitation included (a)strength and coordination training; (b)respiratory muscle training (IMT); (c)aerobic conditioning; and (d)nutritional coaching and supplementation. Prehabilitation length was tailored to the 4-6 week time lag typically preceding each participant's normally scheduled surgery. MEASUREMENTS Functional performance and patient surveys were assessed at baseline, every other week during prehabilitation, and then 30 and 90 days after surgery. Within-person changes were estimated using linear mixed models. RESULTS 43 patients completed baseline assessments; 36(84%) completed a median 5(range 3-10) weeks of prehabilitation before surgery; 32(74%) were retained through 90-day follow-up. Baseline function was relatively low. Exercise logs show participants completed 94% of supervised exercise, 78% of prescribed IMT and 74% of home-based exercise. Between baseline and day of surgery, timed-up-and-go decreased 2.3 seconds, gait speed increased 0.1 meters/second, six-minute walk test increased 41.7 meters, and the time to complete 5 chair rises decreased 1.6 seconds(all P≤0.007). Maximum and mean inspiratory and expiratory pressures increased 4.5, 7.3, 14.1 and 13.5 centimeters of water, respectively(all P≤0.041). CONCLUSIONS Prehabilitation is feasible before major surgery and achieves clinically meaningful improvements in functional performance that may impact postoperative outcomes and recovery. These data support rationale for a larger trial powered to detect differences in postoperative outcomes.
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Affiliation(s)
- D E Hall
- Daniel E Hall, UPMC Presbyterian Hospital, Suite F12, 200 Lothrop St, Pittsburgh, PA 15213, P:412.647.0421|F:412.647.1448,
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Chu A, Devasenapathy N, Wong M, Srivastava A, Ceccacci R, Lin C, Chu D. CANCER RISK WITH TOPICAL PIMECROLIMUS AND TACROLIMUS FOR ATOPIC DERMATITIS: SYSTEMATIC REVIEW AND BAYESIAN META-ANALYSIS. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.529] [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: 11/11/2022]
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Colli LD, Colli MD, Al Ali A, Gabrielli S, Clarke A, Morris J, Gravel J, Lim R, Chan E, Goldman R, O A, Gerdts J, Chu D, Upton J, Hochstadter E, Bretholz A, McCusker C, Zhang X, Benor S, Simons E, Abrams E, Protudjer J, Shoshan MB. The Role of Epinephrine, Antihistamines, and Steroids in the Management of Anaphylaxis: Data from the Cross-Canada Anaphylaxis Registry (C-CARE). J Allergy Clin Immunol 2022. [DOI: 10.1016/j.jaci.2021.12.454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chu D, Khamis A, Akl E, Neumann I, Solo K, Schunemann H. Revisiting the evidence for physical distancing, face masks, and eye protection - Authors' reply. Lancet 2021; 398:663-664. [PMID: 34419202 PMCID: PMC8426154 DOI: 10.1016/s0140-6736(21)01734-7] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 07/22/2021] [Indexed: 11/08/2022]
Affiliation(s)
- Derek Chu
- McMaster University, Hamilton, ON L8S 4L8, Canada
| | | | - Elie Akl
- American University of Beirut, Beirut, Lebanon
| | | | - Karla Solo
- McMaster University, Hamilton, ON L8S 4L8, Canada
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Lee WT, Ng KW, Liao J, Luk ACS, Suen HC, Chan THT, Cheung MY, Chu D, Zhao M, Chan YL, Li TC, Lee TL. P–547 Single-cell RNA sequencing identifies molecular regulations associated with poor maturation performance on rescue in vitro matured oocytes. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.546] [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
What is the transcriptome signature associated with rescuein vitro matured (rIVM) oocytes?
Summary answer
GATA–1/CREB1/WNT signaling axis was repressed in rIVM oocytes of poor quality.
What is known already
rIVM aims to produce mature oocytes (MII) for in vitro fertilization (IVF) through IVM of immature oocytes collected from stimulated ovaries. It is less popular due to limited success rate in infertility treatment. Genetic aberrations, cellular stress, and the absence of cumulus cell support in oocytes could account for the failure of rIVM.
Study design, size, duration
We applied single-cell RNA sequencing (scRNA-seq) to capture the transcriptomes of human in vivo (IVO) oocytes (n = 10) from 7 donors and rIVM oocytes (n = 10) from 10 donors, followed by studying the maternal age effect and ovarian responses on rIVM oocyte transcriptomes.
Participants/materials, setting, methods
Human oocytes were collected from donors aged 28–41 years with a body mass index of < 30. RNA extraction, cDNA generation, library construction and sequencing were performed in one preparation. scRNA-seq data were then processed and analyzed. Selected genes in therIVM vs. IVO comparison were validated by quantitative real-time PCR.
Main results and the role of chance
The transcriptome profiles of rIVM/IVO showed distinctive differences. A total of 1559 differentially expressed genes (DEGs, genes with at least two-fold change and adjusted p < 0.05) were found to be enriched in metabolic processes, biosynthesis, and oxidative phosphorylation. Among these DEGs, we identified a repression of WNT/β-catenin signaling in rIVM when compared with IVO oocytes. We found that estradiol level exhibited a significant age-independent correlation with the IVO mature oocyte ratio (MII ratio). rIVM oocytes with higher MII ratio showed over-represented cellular processes such as anti-apoptosis. To further identify targets that contribute to the poor outcomes of rIVM, we compared oocytes collected from young donors with high MII ratio versus donors of advanced maternal age and revealed CREB1was an important regulator in rIVM. Our study identified GATA–1/CREB1/WNT signaling was repressed in both rIVM condition and rIVM oocytes of low-quality.
Limitations, reasons for caution
In the rIVM oocytes of high- and low-quality comparison, the number of samples was limited after data filtering with stringent selection criteria. For the oocyte stage identification, we were unable to predict the presence of oocyte spindle so polar body extrusion was the only indicator.
Wider implications of the findings: This study showed that GATA–1/CREB1/WNT signaling and antioxidant actions were repressed in rIVM condition and was further downregulated in rIVM oocytes of low-quality, providing us the foundation of subsequent follow-up research on human subjects.
Trial registration number
Not applicable
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Affiliation(s)
- W T Lee
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - K W Ng
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - J Liao
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - A C S Luk
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - H C Suen
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - T H T Chan
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - M Y Cheung
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - D Chu
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
| | - M Zhao
- The Chinese University of Hong Kong, Department of Obstetrics and Gynaecology, Hong Kong, Hong Kong
| | - Y L Chan
- The Chinese University of Hong Kong, Department of Obstetrics and Gynaecology, Hong Kong, Hong Kong
| | - T C Li
- The Chinese University of Hong Kong, Department of Obstetrics and Gynaecology, Hong Kong, Hong Kong
| | - T L Lee
- The Chinese University of Hong Kong, School of Biomedical Sciences, Hong Kong, Hong Kong
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Betancourt-Torres M, Chu D, Gunn A, Caridi T, Huang J. Abstract No. 214 Interventional radiology drainage of diverticulitis abscesses according to Hinchey classification: surgical dogma, should interventional radiology follow? J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Golding M, Lemoine-Courcelles C, Abrams E, Ben-Shoshan M, Begin P, Chan E, Chu D, Gerdts J, Kim H, Simons E, Upton J, Protudjer J. Consequences of the COVID-19 pandemic on grocery shopping habits of food allergic families. J Allergy Clin Immunol 2021. [DOI: 10.1016/j.jaci.2020.12.421] [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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Golding M, Lemoine-Courcelles C, Abrams E, Ben-Shoshan M, Chan E, Chu D, Gerdts J, Kim H, Simons E, Upton J, Protudjer J. Changes in food spending among food allergic families following the COVID-19 pandemic. J Allergy Clin Immunol 2021. [DOI: 10.1016/j.jaci.2020.12.420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Saleh C, Kim L, Whalen-Browne A, Chu D. P231 TRIPLE THERAPY (ICS/LABA/LAMA) IN PATIENTS WITH UNCONTROLLED ASTHMA: A SYSTEMATIC REVIEW AND META-ANALYSIS. Ann Allergy Asthma Immunol 2020. [DOI: 10.1016/j.anai.2020.08.128] [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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Leung M, Clarke AE, Gabrielli S, Morris J, Gravel J, Lim R, Chan ES, Goldman RD, Enarson P, O'Keefe A, Gerdts J, Chu D, Upton J, Zhang X, Shand G, Ben-Shoshan M. Risk of peanut- and tree-nut-induced anaphylaxis during Halloween, Easter and other cultural holidays in Canadian children. CMAJ 2020; 192:E1084-E1092. [PMID: 32958573 DOI: 10.1503/cmaj.200034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND It is not established whether the risk of anaphylaxis induced by peanuts or tree nuts in children increases at specific times of the year. We aimed to evaluate the risk of peanut-and tree-nut-induced anaphylaxis during certain cultural holidays in Canadian children. METHODS We collected data on confirmed pediatric cases of anaphylaxis presenting to emergency departments in 4 Canadian provinces as part of the Cross-Canada Anaphylaxis Registry. We assessed the mean number of cases per day and incidence rate ratio (IRR) of anaphylaxis induced by unknown nuts, peanuts and tree nuts presenting during each of 6 holidays (Halloween, Christmas, Easter, Diwali, Chinese New Year and Eid al-Adha) versus the rest of the year. We estimated IRRs and 95% confidence intervals (CIs) using Poisson regression. RESULTS Data were collected for 1390 pediatric cases of anaphylaxis between 2011 and 2020. Their median age was 5.4 years, and 864 (62.2%) of the children were boys. During Halloween and Easter, there were higher rates of anaphylaxis to unknown nuts (IRR 1.66, 95% CI 1.13-2.43 and IRR 1.71, 95% CI 1.21-2.42, respectively) and peanuts (IRR 1.86, 95% CI 1.12-3.11 and IRR 1.57, 95% CI 0.94-2.63, respectively) compared to the rest of the year. No increased risk of peanut- or tree-nut-induced anaphylaxis was observed during Christmas, Diwali, Chinese New Year or Eid al-Adha. Anaphylaxis induced by unknown nuts, peanuts and tree nuts was more likely in children aged 6 years or older than in younger children. INTERPRETATION We found an increased risk of anaphylaxis induced by unknown nuts and peanuts during Halloween and Easter among Canadian children. Educational tools are needed to increase awareness and vigilance in order to decrease the risk of anaphylaxis induced by peanuts and tree nuts in children during these holidays.
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Affiliation(s)
- Mélanie Leung
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que.
| | - Ann E Clarke
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Sofianne Gabrielli
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Judy Morris
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Jocelyn Gravel
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Rodrick Lim
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Edmond S Chan
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Ran D Goldman
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Paul Enarson
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Andrew O'Keefe
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Jennifer Gerdts
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Derek Chu
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Julia Upton
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Xun Zhang
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Greg Shand
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
| | - Moshe Ben-Shoshan
- Division of Allergy and Clinical Immunology (Leung, Gabrielli, Ben-Shoshan), Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montréal, Que.; Division of Rheumatology (Clarke, Shand), Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alta.; Department of Emergency Medicine (Morris), Hôpital Sacré-Coeur; Division of Pediatric Emergency Medicine (Gravel), Department of Pediatrics, Centre hospitalier universitaire Sainte-Justine, Montréal, Que.; Division of Pediatric Emergency Medicine (Lim), Department of Pediatrics, Children's Hospital at London Health Sciences Centre, London, Ont.; Divisions of Allergy and Immunology (Chan) and Emergency Medicine (Goldman, Enarson), Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC; Department of Pediatrics (O'Keefe), Faculty of Medicine, Memorial University, St. John's, NL; Food Allergy Canada (Gerdts), Toronto, Ont.; Division of Clinical Immunology & Allergy (Chu), Department of Medicine, and Department of Health Research Methods, Evidence, and Impact (Chu), McMaster University, Hamilton, Ont.; Division of Immunology and Allergy (Upton), Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont.; Centre for Outcomes Research and Evaluation (Zhang), Research Institute of McGill University Health Centre, Montréal, Que
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Chu D, Wood R, French S, Fiocchi A, Jordana M, Waserman S, Brozek J, Schünemann H. Oral immunotherapy for peanut allergy: a systematic review and meta-analysis. World Allergy Organ J 2020. [DOI: 10.1016/j.waojou.2020.100416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Ratnarajah K, Clarke AE, McCusker C, Gabrielli S, Morris J, Gravel J, Bretholz A, Lim R, Chan ES, Goldman RD, O-Keefe A, Gerdts J, Chu D, Upton J, Ben-Shoshan M. Anaphylaxis as a presenting symptom of food allergy in children with no known food allergy. J Allergy Clin Immunol Pract 2020; 8:2811-2813.e2. [PMID: 32348910 DOI: 10.1016/j.jaip.2020.04.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 11/18/2022]
Affiliation(s)
- Kayadri Ratnarajah
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, QC, Canada.
| | - Ann E Clarke
- Division of Rheumatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Christine McCusker
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, QC, Canada
| | - Sofianne Gabrielli
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, QC, Canada
| | - Judy Morris
- Department of Emergency Medicine, Sacré-Coeur Hôpital, Montreal, QC, Canada
| | - Jocelyn Gravel
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Adam Bretholz
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Rodrick Lim
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Children's Hospital at London Health Science Centre, London, ON, Canada
| | - Edmond S Chan
- Division of Allergy and Immunology, Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Ran D Goldman
- Division of Clinical Pharmacology and Emergency Medicine, Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Andrew O-Keefe
- Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, Memorial University, St John's, NL, Canada
| | | | - Derek Chu
- Division of Clinical Immunology & Allergy, Department of Medicine, and Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, ON, Canada
| | - Julia Upton
- Division of Immunology and Allergy, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Moshe Ben-Shoshan
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, QC, Canada
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Shaker MS, Oppenheimer J, Wallace DV, Golden DBK, Lang DM, Lang ES, Bernstein JA, Campbell RL, Chu D, Dinakar C, Ellis AK, Greenhawt M, Horner C, Lieberman JA, Rank MA, Stukus DR, Wang J. Making the GRADE in anaphylaxis management: Toward recommendations integrating values, preferences, context, and shared decision making. Ann Allergy Asthma Immunol 2020; 124:526-535.e2. [PMID: 32199979 DOI: 10.1016/j.anai.2020.03.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 03/09/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To review GRADE (Grading of Recommendations Assessment, Development, and Evaluation) methods and discuss the clinical application of conditional recommendations in clinical guidelines, specifically in the context of anaphylaxis. DATA SOURCES Articles that described GRADE, evidence synthesis, evidence to recommendation frameworks, and shared decision making were used to discuss conditional recommendations of the 2020 Anaphylaxis GRADE guideline. STUDY SELECTIONS A narrative review detailing concepts of GRADE and approaches to translate conditional recommendations to individualized and contextualized patient care. RESULTS GRADE methods encourage a nuanced relationship between certainty of evidence and strength of recommendations. Strength of recommendation must incorporate key factors, including the balance between benefits and harms, patient values and preferences, and resource allocation (costs), with equity, feasibility, and acceptability also often included as considerations. GRADE guidelines provide recommendations that are characterized by directionality (for or against) and strength (strong or conditional). A conditional recommendation is tailored to context and primarily applied through a lens of patient preferences related to the likelihood of outcomes of importance and a shared decision-making approach. Although the 2020 Anaphylaxis GRADE guideline better informs the practice of anaphylaxis prevention through (1) identification and mitigation of risk factors for biphasic anaphylaxis and (2) evaluation of the use of glucocorticoid and/or antihistamine pretreatment, all GRADE recommendations, although directional, are conditional and as such should not be universally applied to every circumstance. CONCLUSION Clinical guidelines provide an important opportunity to critically appraise evidence and translate evidence to practice. Patients, practitioners, and policy makers should appreciate the strength of recommendation and certainty of evidence and understand how this affects guideline applicability and implementation.
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Affiliation(s)
- Marcus S Shaker
- Section of Allergy and Clinical Immunology, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire.
| | - John Oppenheimer
- Department of Internal Medicine, Pulmonary and Allergy, UMDNJ-Rutgers New Jersey Medical School and Pulmonary and Allergy Associates, Morristown, New Jersey
| | - Dana V Wallace
- Nova Southeastern Allopathic Medical School, Fort Lauderdale, Florida
| | - David B K Golden
- Division of Allergy-Clinical Immunology, Johns Hopkins University, Baltimore, Maryland
| | - David M Lang
- Department of Allergy and Clinical Immunology, Respiratory Institute, Cleveland Clinic, Cleveland, Ohio
| | - Eddy S Lang
- Department of Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jonathan A Bernstein
- Department of Internal Medicine, Division of Immunology, Allergy Section, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Ronna L Campbell
- Department of Emergency Medicine, Mayo Clinic, Rochester, Minnesota
| | - Derek Chu
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Chitra Dinakar
- Allergy, Asthma, and Immunodeficiency, Division of Pulmonary, Allergy, and Critical Care Medicine, Stanford University School of Medicine, Stanford, California
| | - Anne K Ellis
- Division of Allergy & Immunology, Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Matthew Greenhawt
- Section of Allergy and Immunology, Children's Hospital Colorado, University of Colorado School of Medicine, Denver, Colorado
| | - Caroline Horner
- Department of Pediatrics, Division of Allergy, Immunology, and Pulmonary Medicine, Washington University School of Medicine, St Louis, Missouri
| | - Jay A Lieberman
- Department of Pediatrics, The University of Tennessee Health Science Center, Memphis, Tennessee
| | - Matthew A Rank
- Division of Allergy, Asthma, and Clinical Immunology, Mayo Clinic in Arizona, Scottsdale, Arizona
| | - David R Stukus
- Division of Allergy and Immunology, Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, Ohio
| | - Julie Wang
- Division of Allergy and Immunology, Icahn School of Medicine at Mount Sinai, New York, New York
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Chu D, Zhang J, Bu X, Dang C, Wang W, Zhang Z. Body mass index, tumour location, and colorectal cancer survival. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz421.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Bousquet J, Pfaar O, Togias A, Schünemann HJ, Ansotegui I, Papadopoulos NG, Tsiligianni I, Agache I, Anto JM, Bachert C, Bedbrook A, Bergmann K, Bosnic‐Anticevich S, Bosse I, Brozek J, Calderon MA, Canonica GW, Caraballo L, Cardona V, Casale T, Cecchi L, Chu D, Costa E, Cruz AA, Czarlewski W, Durham SR, Du Toit G, Dykewicz M, Ebisawa M, Fauquert JL, Fernandez‐Rivas M, Fokkens WJ, Fonseca J, Fontaine J, Gerth van Wijk R, Haahtela T, Halken S, Hellings PW, Ierodiakonou D, Iinuma T, Ivancevich JC, Jacobsen L, Jutel M, Kaidashev I, Khaitov M, Kalayci O, Kleine Tebbe J, Klimek L, Kowalski ML, Kuna P, Kvedariene V, La Grutta S, Larenas‐Linemann D, Lau S, Laune D, Le L, Lodrup Carlsen K, Lourenço O, Malling H, Marien G, Menditto E, Mercier G, Mullol J, Muraro A, O’Hehir R, Okamoto Y, Pajno GB, Park H, Panzner P, Passalacqua G, Pham‐Thi N, Roberts G, Pawankar R, Rolland C, Rosario N, Ryan D, Samolinski B, Sanchez‐Borges M, Scadding G, Shamji MH, Sheikh A, Sturm GJ, Todo Bom A, Toppila‐Salmi S, Valentin‐Rostan M, Valiulis A, Valovirta E, Ventura M, Wahn U, Walker S, Wallace D, Waserman S, Yorgancioglu A, Zuberbier T. 2019 ARIA Care pathways for allergen immunotherapy. Allergy 2019; 74:2087-2102. [PMID: 30955224 DOI: 10.1111/all.13805] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [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: 01/22/2019] [Revised: 02/19/2019] [Accepted: 02/22/2019] [Indexed: 01/02/2023]
Abstract
Allergen immunotherapy (AIT) is a proven therapeutic option for the treatment of allergic rhinitis and/or asthma. Many guidelines or national practice guidelines have been produced but the evidence-based method varies, many are complex and none propose care pathways. This paper reviews care pathways for AIT using strict criteria and provides simple recommendations that can be used by all stakeholders including healthcare professionals. The decision to prescribe AIT for the patient should be individualized and based on the relevance of the allergens, the persistence of symptoms despite appropriate medications according to guidelines as well as the availability of good-quality and efficacious extracts. Allergen extracts cannot be regarded as generics. Immunotherapy is selected by specialists for stratified patients. There are no currently available validated biomarkers that can predict AIT success. In adolescents and adults, AIT should be reserved for patients with moderate/severe rhinitis or for those with moderate asthma who, despite appropriate pharmacotherapy and adherence, continue to exhibit exacerbations that appear to be related to allergen exposure, except in some specific cases. Immunotherapy may be even more advantageous in patients with multimorbidity. In children, AIT may prevent asthma onset in patients with rhinitis. mHealth tools are promising for the stratification and follow-up of patients.
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Affiliation(s)
- Jean Bousquet
- MACVIA‐France, Fondation partenariale FMC VIA‐LR Montpellier France
- INSERM U 1168, VIMA : Ageing and Chronic Diseases Epidemiological and Public Health Approaches Villejuif France
- UMR‐S 1168 Université Versailles St‐Quentin‐en‐Yvelines Montigny le Bretonneux France
- Euforea Brussels Belgium
- Charité‐Universitätsmedizin Berlin, Humboldt‐Universität zu Berlin Berlin Germany
| | - Oliver Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Rhinology and Allergy, University Hospital Marburg Philipps‐Universität Marburg Marburg Germany
| | - Alkis Togias
- Division of Allergy, Immunology, and Transplantation (DAIT) National Institute of Allergy and Infectious Diseases, NIH Bethesda Maryland
| | - Holger J. Schünemann
- Department of Health Research Methods, Evidence and Impact, Division of Immunology and Allergy McMaster University Hamilton Ontario Canada
| | | | - Nikolaos G. Papadopoulos
- Division of Infection, Immunity & Respiratory Medicine, Royal Manchester Children's Hospital University of Manchester Manchester UK
- Allergy Department, 2nd Pediatric Clinic, Athens General Children's Hospital "P&A Kyriakou” University of Athens Athens Greece
| | - Ioanna Tsiligianni
- Department of Social Medicine, Faculty of Medicine University of Crete and International Primary Care Respiratory Group Crete Greece
| | - Ioana Agache
- Faculty of Medicine Transylvania University Brasov Romania
| | - Josep M. Anto
- Centre for Research in Environmental Epidemiology (CREAL) ISGlobAL Barcelona Spain
- IMIM (Hospital del Mar Research Institute) Barcelona Spain
- Universitat Pompeu Fabra (UPF) Barcelona Spain
- CIBER Epidemiología y Salud Pública (CIBERESP) Barcelona Spain
| | - Claus Bachert
- ENT Department, Upper Airways Research Laboratory Ghent University Hospital Ghent Belgium
| | - Anna Bedbrook
- MACVIA‐France, Fondation partenariale FMC VIA‐LR Montpellier France
| | - Karl‐Christian Bergmann
- Department of Dermatology and Allergy Charité ‐ Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Comprehensive Allergy Centre, Member of GALEN, Humboldt‐Uniersität zu Berlin Berlin Germany
| | - Sinthia Bosnic‐Anticevich
- Woolcock Institute of Medical Research, Woolcock Emphysema Centre and Local Health District University of Sydney Glebe New South Wales Australia
| | | | - Jan Brozek
- Department of Health Research Methods, Evidence and Impact, Division of Immunology and Allergy McMaster University Hamilton Ontario Canada
| | - Moises A. Calderon
- Imperial College London ‐ National Heart and Lung Institute Royal Brompton Hospital NHS London UK
| | - Giorgio W. Canonica
- Personalized Medicine Clinic Asthma & Allergy, Humanitas Research Hospital Humanitas University Milan Italy
| | - Luigi Caraballo
- Institute for Immunological Research University of Cartagena, Campus de Zaragocilla Cartagena Colombia
- Foundation for the Development of Medical and Biological Sciences (Fundemeb) Cartagena Colombia
| | - Victoria Cardona
- Allergy Section, Department of Internal Medicine Hospital Vall d'Hebron & ARADyAL Research Network Barcelona Spain
| | - Thomas Casale
- Division of Allergy/Immunology University of South Florida Tampa Florida
| | - Lorenzo Cecchi
- SOS Allergology and Clinical Immunology USL Toscana Centro Prato Italy
| | - Derek Chu
- Department of Health Research Methods, Evidence and Impact, Division of Immunology and Allergy McMaster University Hamilton Ontario Canada
| | - Elisio Costa
- UCIBIO, REQUIMTE, Faculty of Pharmacy, and Competence Center on Active and Healthy Ageing of University of Porto (AgeUPNetWork) University of Porto Porto Portugal
| | - Alvaro A. Cruz
- ProAR – Nucleo de Excelencia em Asma Federal University of Bahia Salvador Brazil
- WHO GARD Planning Group Salvador Brazil
| | | | - Stephen R. Durham
- Allergy and Clinical Immunology Section, National Heart and Lung Institute Imperial College London London UK
| | - George Du Toit
- Guy's and st Thomas' NHS Trust, Kings College London London UK
| | - Mark Dykewicz
- Section of Allergy and Immunology Saint Louis University School of Medicine Saint Louis Missouri
| | - Motohiro Ebisawa
- Clinical Research Center for Allergy and Rheumatology Sagamihara National Hospital Sagamihara Japan
| | - Jean Luc Fauquert
- Unité de pneumo‐allergologie de l'enfant, pôle pédiatrique CHU de Clermont‐Ferrand‐Estaing Clermont‐Ferrand France
| | | | - Wytske J. Fokkens
- Department of Otorhinolaryngology Academic Medical Centres Amsterdam The Netherlands
| | - João Fonseca
- CINTESIS, Center for Research in Health Technology and Information Systems Faculdade de Medicina da Universidade do Porto Porto Portugal
- Medida, Lda Porto Portugal
| | | | - Roy Gerth van Wijk
- Department of Internal Medicine, Section of Allergology Erasmus MC Rotterdam The Netherlands
| | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital University of Helsinki Helsinki Finland
| | - Susanne Halken
- Hans Christian Andersen Children's Hospital Odense University Hospital Odense Denmark
| | - Peter W. Hellings
- Department of Otorhinolaryngology University Hospitals Leuven Leuven Belgium
- Academic Medical Center University of Amsterdam Amsterdam The Netherlands
| | - Despo Ierodiakonou
- Department of Social Medicine, Faculty of Medicine University of Crete and International Primary Care Respiratory Group Crete Greece
| | - Tomohisa Iinuma
- Department of Otorhinolaryngology Chiba University Hospital Chiba Japan
| | | | | | - Marek Jutel
- Department of Clinical Immunology Wrocław Medical University Wrocław Poland
| | - Igor Kaidashev
- Ukrainian Medical Stomatological Academy Poltava Ukraine
| | - Musa Khaitov
- Institute of Immunology, Federal Medicobiological Agency, Laboratory of Molecular immunology National Research Center Moscow Russian Federation
| | - Omer Kalayci
- Pediatric Allergy and Asthma Unit Hacettepe University School of Medicine Ankara Turkey
| | | | - Ludger Klimek
- Center for Rhinology and Allergology Wiesbaden Germany
| | - Marek L. Kowalski
- Department of Immunology and Allergy, Healthy Ageing Research Center Medical University of Lodz Lodz Poland
- Sach's Children and Youth Hospital, Södersjukhuset Stockholm Sweden
| | - Piotr Kuna
- Division of Internal Medicine, Asthma and Allergy, Barlicki University Hospital Medical University of Lodz Lodz Poland
| | - Violeta Kvedariene
- Department of Pathology, Faculty of Medicine, Institute of Biomedical Sciences Vilnius University Vilnius Lithuania
- Faculty of Medicine, Institute of Clinical medicine, Clinic of Chest diseases and Allergology Vilnius University Vilnius Lithuania
| | - Stefania La Grutta
- Institute of Biomedicine and Molecular Immunology (IBIM) National Research Council (CNR) Palermo Italy
| | - Désirée Larenas‐Linemann
- Center of Excellence in Asthma and Allergy Médica Sur Clinical Foundation and Hospital México City Mexico
| | - Susanne Lau
- Department of Pediatric Pneumology and Immunology Charité Universitätsmedizin Berlin Germany
| | | | - Lan Le
- University of Medicine and Pharmacy Hochiminh City Vietnam
| | - Karin Lodrup Carlsen
- Department of Paediatrics Oslo University Hospital Oslo Norway
- Faculty of Medicine, Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Olga Lourenço
- Faculty of Health Sciences and CICS – UBI, Health Sciences Research Centre University of Beira Interior Covilhã Portugal
| | | | | | - Enrica Menditto
- CIRFF, Center of Pharmacoeconomics University of Naples Federico II Naples Italy
| | - Gregoire Mercier
- Département de l’Information Médicale, Unité Médico‐Economie University Hospital Montpellier France
| | - Joaquim Mullol
- Rhinology Unit & Smell Clinic, ENT Department Hospital Clínic Barcelona Spain
- Clinical & Experimental Respiratory Immunoallergy IDIBAPS, CIBERES, University of Barcelona Barcelona Spain
| | - Antonella Muraro
- Food Allergy Referral Centre Veneto Region, Department of Women and Child Health Padua General University Hospital Padua Italy
| | - Robyn O’Hehir
- Department of Allergy, Immunology and Respiratory Medicine, Alfred Hospital and Central Clinical School Monash University Melbourne Victoria Australia
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology Chiba University Hospital Chiba Japan
| | - Giovanni B. Pajno
- Department of Pediatrics, Allergy Unit University of Messina Messina Italy
| | - Hae‐Sim Park
- Department of Allergy and Clinical Immunology Ajou University School of Medicine Suwon South Korea
| | - Petr Panzner
- Department of Immunology and Allergology, Faculty of Medicine in Pilsen Charles University in Prague Pilsen Czech Republic
| | - Giovanni Passalacqua
- Allergy and Respiratory Diseases Ospedale Policlino San Martino ‐University of Genoa Genoa Italy
| | | | - Graham Roberts
- David Hide Centre, St Mary's Hospital Isle of Wight and University of Southampton Southampton UK
| | - Ruby Pawankar
- Department of Pediatrics Nippon Medical School Tokyo Japan
| | | | | | - Dermot Ryan
- Allergy and Respiratory Research Group, Medical School, Usher Institute of Population Health Sciences and Informatics University of Edinburgh Edinburgh UK
| | - Bolesław Samolinski
- Department of Prevention of Environmental Hazards and Allergology Medical University of Warsaw Warsaw Poland
| | - Mario Sanchez‐Borges
- Allergy and Clinical Immunology Department Centro Medico‐Docente La Trinidad Caracas Venezuela
| | - Glenis Scadding
- The Royal National TNE Hospital University College London London UK
| | - Mohamed H. Shamji
- Immunomodulation and Tolerance Group Imperial College London London UK
- Allergy and Clinical Immunology Imperial College London London UK
| | - Aziz Sheikh
- The Usher Institute of Population Health Sciences and Informatics The University of Edinburgh Edinburgh UK
| | - Gunter J. Sturm
- Department of Dermatology and Venerology Medical University of Graz Graz Austria
- Outpatient Allergy Clinic Reumannplatz Vienna Austria
| | - Ana Todo Bom
- Imunoalergologia, Centro Hospitalar Universitário de Coimbra and Faculty of Medicine University of Coimbra Coimbra Portugal
| | - Sanna Toppila‐Salmi
- Skin and Allergy Hospital, Helsinki University Hospital University of Helsinki Helsinki Finland
| | | | - Arunas Valiulis
- Clinic of Children's Diseases Vilnius University Institute of Clinical Medicine Vilnius Lithuania
- Department of Public Health Institute of Health Sciences Vilnius Lithuania
- European Academy of Paediatrics (EAP/UEMS‐SP) Brussels Belgium
| | - Erkka Valovirta
- Department of Lung Diseases and Clinical Immunology, Terveystalo Allergy Clinic University of Turku Turku Finland
| | - Maria‐Teresa Ventura
- Unit of Geriatric Immunoallergology University of Bari Medical School Bari Italy
| | - Ulrich Wahn
- Pediatric Department Charité, Berlin Germany
| | | | - Dana Wallace
- Nova Southeastern University Fort Lauderdale Florida
| | - Susan Waserman
- Department of Medicine, Clinical Immunology and Allergy McMaster University Hamilton Ontario
| | - Arzu Yorgancioglu
- Department of Pulmonary Diseases, Faculty of Medicine Celal Bayar University Manisa Turkey
| | - Torsten Zuberbier
- Department of Dermatology and Allergy Charité ‐ Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Berlin Institute of Health, Comprehensive Allergy Centre, Member of GALEN, Humboldt‐Uniersität zu Berlin Berlin Germany
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Laureano M, Goodlife L, Chu D, Siegal D. P6. Abstract Title: Risks and Benefits of Antithrombotic Therapy in Polycythemia Vera: A Systematic Review. Thromb Res 2019. [DOI: 10.1016/j.thromres.2019.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chu D, Zhang Z, Zhang J, Wang Y, Li Y, Bu X, Li E, Zhang J. Positive feedback activation of notch signal by obesity enhances colorectal tumorigenicity. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz269.035] [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: 11/13/2022] Open
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Nham T, Saleh C, Chu D, Vakaljan SL, Ohayon JA, Siegal DM. Refractory urticaria and the importance of diagnosing Schnitzler's syndrome. BMJ Case Rep 2019; 12:12/4/e228546. [PMID: 31036740 DOI: 10.1136/bcr-2018-228546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
A 52-year-old man presented with chronic urticaria that was refractory to standard chronic spontaneous urticaria (CSU) treatment. Over time, he developed systemic symptoms including fatigue, weight loss, arthralgia and bone pain. His laboratory investigations also became significant for microcytic anaemia, neutrophilia and elevated C reactive protein, erythrocyte sedimentation rate and IgE levels, in addition to an IgM monoclonal protein. He achieved only partial remission with typical medications for CSU including omalizumab, cyclosporine and cetirizine. After 6 years, his worsening symptoms and abnormal investigations led to a rare diagnosis of Schnitzler's syndrome and a trial of the interleukin 1 receptor antagonist, anakinra, which caused a rapid and complete resolution of his symptoms.
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Affiliation(s)
- Tina Nham
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Carol Saleh
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Derek Chu
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | - Jason A Ohayon
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Deborah M Siegal
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
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Katzenellenbogen JA, Min J, Kim SH, Laws MJ, Zhao Y, Ziegler Y, Nelson ER, Shahoei SH, Chu D, Park BH, Katzenellenbogen BS. Abstract P5-04-06: Withdrawn. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-04-06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This abstract was withdrawn by the authors.
Citation Format: Katzenellenbogen JA, Min J, Kim SH, Laws MJ, Zhao Y, Ziegler Y, Nelson ER, Shahoei SH, Chu D, Park BH, Katzenellenbogen BS. Withdrawn [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-04-06.
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Affiliation(s)
- JA Katzenellenbogen
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - J Min
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - SH Kim
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - MJ Laws
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - Y Zhao
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - Y Ziegler
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - ER Nelson
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - SH Shahoei
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - D Chu
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - BH Park
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
| | - BS Katzenellenbogen
- University of Illinois at Urbana-Champaign, Urbana, IL; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University School of Medicine, Baltimore, MD
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Li Z, Bahreini A, Levine KM, Wang P, Tasdemir N, Montanez MA, Sundd P, Wallace CT, Watkins SC, Chu D, Park BH, Hou W, Mooring MS, Zhu L, Tseng GC, Carroll JS, Atkinson JM, Lee AV, Oesterreich S. Abstract P2-01-09: ESR1 mutations drive breast cancer metastasis by context-dependent alterations in adhesive and migratory properties. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-01-09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Estrogen receptor alpha (ERα/ESR1) is mutated in 30-40% of endocrine resistant ER+ breast cancer. These mutations, primarily located in the ligand binding domain, are associated with worse outcome in patients, and preclinical studies have shown that they cause ligand independent growth. An open question is whether these mutations contribute to actual metastatic process, or merely endocrine resistance.
Methods: Using Y537S and D538G genome-edited MCF7 and T47D cells, 3D growth was assessed in ultralow attachment plates. Cell-cell adhesion was determined using calcein-labelled adhesion assay and quantitative microfluidic fluorescence microscope (qMFM). Collagen-based adhesion and spheroid invasion assays were used to test adhesive and invasive properties. Wound scratching, spheroid collective migration and Boyden chamber transwell assays were applied to monitor cell migratory phenotypes. Mutated ER cistromes were profiled using ChIP-sequencing. ESR1 mutations in clinical samples were characterized using ddPCR.
Results: Visual inspection of cells grown in suspension culture revealed more compressed multicellular spheroids in ESR1 mutant cells, indicative of increased cell-cell interactions. This observation was confirmed in both static and microfluidic conditions. This effect was more pronounced in MCF7 than T47D cells, correlating with increased expression of desmosome and gap junction genes. Pharmacological blockade of gap junctions decreased cell-cell adhesion. Decreased attachment and increased invasion to collagen were discerned in all mutant cell types. Further functional analysis identified alterations in the TIMP3-MMP axis causing these phenotypes. The cell-cell adhesion phenotypes were restricted to MCF7-Y537S/D538G and T47D-Y537S, whereas T47D-D538G cells showed significantly increased migration. A GSEA screen identified Wnt signaling as uniquely induced in this context, and combination treatment using the Wnt inhibitor LGK974 and Fulvestrant led to synergistic inhibition of migration. ChIP-seq identified mutation-specific cistromes with an overall increased ligand-independent ER binding. However, it did not reveal binding sites in any candidate metastases genes, suggesting secondary epigenetic mechanisms. The motif analysis revealed the enrichment of FOXA1 motifs in mutated ER cistromes except T47D-D538G cells. However, knockdown of FOXA1 induced significantly higher inhibition of T47D-D538G migration than Fulvestrant treatment alone, indicating a FOXA1-dominated mechanism. Collectively, these data show that ESR1 mutant cells gain metastatic properties, in addition to endocrine resistance. To prove this using clinical samples, we measured ESR1 mutations in a well-defined cohort of endocrine resistant local or distant recurrence. Significant enrichment of ESR1 mutations in distant (9/55) vs local (0/27) recurrences confirms critical role of mutant ERα in metastases.
Conclusion: Further analysis of context dependent changes in cell-cell adhesion and migration of ESR1 mutant cells might guide the design and development of drugs targeting ERα-mutant tumors, such as inhibitors of gap junction, FOXA1, MMP, and Wnt signaling pathways.
Disclosure: The authors declare no conflict of interest.
Citation Format: Li Z, Bahreini A, Levine KM, Wang P, Tasdemir N, Montanez MA, Sundd P, Wallace CT, Watkins SC, Chu D, Park BH, Hou W, Mooring MS, Zhu L, Tseng GC, Carroll JS, Atkinson JM, Lee AV, Oesterreich S. ESR1 mutations drive breast cancer metastasis by context-dependent alterations in adhesive and migratory properties [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-01-09.
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Affiliation(s)
- Z Li
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - A Bahreini
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - KM Levine
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - P Wang
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - N Tasdemir
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - MA Montanez
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - P Sundd
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - CT Wallace
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - SC Watkins
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - D Chu
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - BH Park
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - W Hou
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - MS Mooring
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - L Zhu
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - GC Tseng
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - JS Carroll
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - JM Atkinson
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - AV Lee
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
| | - S Oesterreich
- University of Pittsburgh, Pittsburgh, PA; UPMC Hillman Cancer Center, Pittsburgh, PA; Tsinghua University, Pittsburgh, PA; Johns Hopkins University, Baltimore, MD; Cancer Research UK Cambridge Institute, Cambridge, United Kingdom
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Chu J, Chu D, Smithwick Q. Encoding and Multiplexing of 2D Images with Orbital Angular Momentum Beams and the Use for Multiview Color Displays. Research (Wash D C) 2019; 2019:9564593. [PMID: 31549097 PMCID: PMC6750116 DOI: 10.34133/2019/9564593] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 12/23/2018] [Indexed: 11/06/2022]
Abstract
The orthogonal nature of different orbital angular momentum modes enables information transmission in optical communications with increased bandwidth through mode division multiplexing. So far the related works have been focused on using orbital angular momentum modes to encode/decode and multiplex point-based on-axis signals for maximum data channel numbers and capacity. Whether orbital angular momentum modes can be utilized to encode/decode off-axis signals for multiplexing in two-dimensional space is of significant importance both fundamentally and practically for its enormous potential in increasing the channel information capacity. In this work, a direct use of orbital angular momentum modes to encode/decode and multiplex two-dimensional images is realized in a scalable multiview display architecture, which can be utilized for viewing three-dimensional images from different angles. The effect of off-axis encoding/decoding and the resultant crosstalk between multiplexed different two-dimensional views are studied. Based on which, a color display of good image quality with four independent views is demonstrated. The resolution of the decoded images is analyzed and the limitation of this approach discussed. Moreover, a spatially multiplexed data communication scheme is also proposed with such a two-dimensional encoding/decoding approach to significantly enhance the data transmission capacity in free space for future data communication needs.
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Affiliation(s)
- J. Chu
- Centre for Photonics Devices and Sensors, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK
| | - D. Chu
- Centre for Photonics Devices and Sensors, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK
| | - Q. Smithwick
- Disney Research, Glendale, California 91201-5020, USA
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Chu D. Circulating exosomal integrin αvβ5 predicts liver metastasis and prognosis in human colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kawal T, Srinivasan AK, Chang J, Long C, Chu D, Shukla AR. Robotic-assisted laparoscopic ureteral re-implant (RALUR): Can post-operative urinary retention be predicted? J Pediatr Urol 2018; 14:323.e1-323.e5. [PMID: 29954664 DOI: 10.1016/j.jpurol.2018.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 05/15/2018] [Indexed: 10/14/2022]
Abstract
OBJECTIVE Urinary retention following robotic-assisted laparoscopic extravesical ureteral reimplantation (RALUR) is proposed to be due to traction or injury of the pelvic parasympathetic nerve plexus during distal ureteral dissection. Nerve-sparing techniques have been employed to avoid injury to the pelvic plexus, either directly or indirectly. This single-center study assessed postoperative urinary retention rates after extravesical RALUR and investigated whether demographic or operative factors could predict this occurrence. METHODS All RALUR cases entered into an Institutional Review Board-approved registry were retrospectively reviewed, and the rate of postoperative retention was determined. Postoperative urinary retention was defined as the need for catheterization at any time in the postoperative period during hospital admission or within 1 week after the operation. This included acute urinary retention episodes (AUR) as well as high post-void residuals (>50% of expected bladder capacity). Univariate analysis was performed to analyze for predictors of postoperative retention. Factors assessed included age, gender, clinical presentation, bowel bladder dysfunction (BBD), pre-operative urinary tract infection (UTI), procedure length, grade of vesicoureteral reflux (VUR), and operative laterality. RESULTS A total of 128 patients underwent extravesical RALUR in 179 ureters during the study period 2012-2016. Male:female ratio was 1:2.6. Median age at surgery was 4 years. Bilateral RALUR was performed in 52 cases (40.6%), and unilateral in 76 (59.4%). Urinary retention requiring catheterization occurred in 11 cases (8.59%). Of these, seven were post-bilateral RALUR, while the remaining four were unilateral. In seven cases, postoperative retention occurred within 24 h following RALUR. The remaining four instances occurred within 1 week, despite successful voiding in the immediate postoperative period. Univariate analysis revealed male gender (P = 0.009) and operating room time (P = 0.029) as predictors of retention. No association was found with age, weight, BBD, pre-operative UTI, grade of VUR, or laterality. CONCLUSION Urinary retention after RALUR was an infrequent complication. When it did occur, urinary retention appeared to be secondary to covariates such as male gender and length of surgical time - possibly an indication of technical difficulty - rather than laterality of repair.
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Affiliation(s)
- T Kawal
- Pediatric Urology Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - A K Srinivasan
- Pediatric Urology Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - J Chang
- Pediatric Urology Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - C Long
- Pediatric Urology Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - D Chu
- Pediatric Urology Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - A R Shukla
- Pediatric Urology Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
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Bao T, Togashi R, Cadeiras M, Schaenman J, Masukawa L, Hai J, Chu D, Chang E, Kupiec-Weglinski S, Groysberg V, Le A, Dod R, Kahn C, Oh E, Do J, Lumintang C, Grogan T, Meltzer J, Kwon M, Rossetti M, Elashoff D, Reed E, Ping P, Bondar G, Deng M. Association between Multidimensional Molecular Biomarkers and Functional Recovery Potential in Advanced Heart Failure. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.737] [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: 10/17/2022] Open
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Masukawa L, Bao T, Dod R, Togashi R, Cadeiras M, Schaenman J, Hai J, Chu D, Chang E, Kupiec-Weglinski S, Groysberg V, Le A, Kahn C, Oh E, Do J, Lumintang C, Grogan T, Meltzer J, Kwon M, Rossetti M, Elashoff D, Reed E, Ping P, Bondar G, Deng M. Early Postoperative Organ Function Recovery Score and Long-term Survival in Advanced Heart Failure Patients Undergoing Mechanical Circulatory Support. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1211] [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: 10/17/2022] Open
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Bondar G, Bao T, Manoharan R, Togashi R, Agrawal N, Ramachandrula S, Hai J, Chu D, Masukawa L, Cadeiras M, Schaenman J, Chang E, Le A, Dod R, Kahn C, Oh E, Do J, Lumintang C, Kupiec-Weglinski S, Groysberg V, Grogan T, Rossetti M, Elashoff D, Reed E, Ping P, Deng M. Systems Biological Identification of an Age-related Predictor of Functional Recovery Potential in Advanced Heart Failure. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1209] [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: 10/17/2022] Open
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Oesterreich S, Li Z, Bahreini A, Wang P, Levine KM, Tasdemir N, Chu D, Park BH, Lee AV. Abstract PD8-08: ESR1 mutations confer novel metastatic functions in genome-edited breast cancer cell models. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-pd8-08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Estrogen receptor alpha (ERα), encoded by the ESR1 gene, is expressed in approximately 70% of breast cancers. Recent studies conducted by us and others have shown that somatic mutations in ESR1 gene play a key role in conferring endocrine resistance in ER+ breast cancer. These hotspot mutations mainly occur on the ligand binding domain of ERα, leading to poor outcomes in 25-30% of patients with ER+ metastatic breast cancer in clinic. The mechanisms behind the potential enhanced metastasis of these mutations have become an urgent issue to be addressed, but they are not well understood due to a lack of ESR1 mutant models.
Methods: We generated and characterized genome-edited T47D and MCF7 breast cancer cell lines with the two most common ESR1 mutations (Y537S and D538G), using CRIPSR/Cas9 and rAAV systems respectively. Multiple clones for each mutant were sorted and the mutation frequencies were detected using digital droplet PCR (ddPCR). We subsequently performed an RNA-sequencing to deeply differentiate the gene expression patterns in these mutants. The growth of these pooled mutant-cells was determined in both 2D and 3D plates. The cell-matrix adhesions were measured based on ECM array, and 84-ECM adhesion related genes were further tested by qPCR array. IncuCyte real-time image system and boyden chamber transwell assays were used to monitor the cell migration and chemotaxis. Tail vein injection were performed on nude mice, and immunofluorescent staining of lung tissues with human specific cytokeratin 19 were utilized to evaluate in vivo metastatic capacities of the mutant cell models.
Results: We first identified the robust mutation frequencies at both RNA and DNA levels in our cell models. The RNA-seq exhibits multiple ligand-independent genes overlapping between either cell lines or mutants, which were further conformed by qPCR. We also found that both Y537S and D538G mutants present ligand-independent growth in 2D and 3D ultra-low attachment plates. Using wound-scratching assay, we observed significant higher migration rate in D538G mutant of T47D cell lines on both matrigel and type I collagen, indicating a cell-line and mutant-specific phenotype. We also detected lower attachment of both mutants on type I collagen in both cell lines, and our qPCR array revealed that alterations in the MMP pathways could be one of the major mechanism causing this phenotype. Finally, tail vein injection of T47D mutant-cells in nude mice derived more micrometatsatic spots in the lung tissues.
Conclusion: In sum, our study presents the first in-depth metastatic functional analysis of the biology of ESR1 mutations in genomic knock-in cell models, pointing out the enhanced migration and decreased cell-matrix adhesion as a potential novel gain-of-function of the Y537S and D538G mutant-cells in vitro and in vivo. These findings suggest the potential role of enhanced metastasis of these ESR1 mutations through remodeling of transcriptional profiles, shedding lights towards the development of efficient therapies of ESR1 mutant breast cancer.
Citation Format: Oesterreich S, Li Z, Bahreini A, Wang P, Levine KM, Tasdemir N, Chu D, Park BH, Lee AV. ESR1 mutations confer novel metastatic functions in genome-edited breast cancer cell models [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr PD8-08.
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Affiliation(s)
- S Oesterreich
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - Z Li
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - A Bahreini
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - P Wang
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - KM Levine
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - N Tasdemir
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - D Chu
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - BH Park
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
| | - AV Lee
- Womens Cancer Research Center, Magee-Womens Research Institute, Pittsburgh, PA; University of Pittsburgh, Pittsburgh, PA; School of Medicine, Tsinghua University, Beijing, China; The Sidney Kimmel Comprehensive Cancer Institute at Johns Hopkins, Baltimore, MD
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Lai YJ, Hu HY, Lee YL, Ku PW, Yen YF, Chu D. Association between obesity and risk of chronic kidney disease: A nationwide Cohort study in Taiwan. Nutr Metab Cardiovasc Dis 2017; 27:1008-1014. [PMID: 28986076 DOI: 10.1016/j.numecd.2017.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/05/2017] [Accepted: 08/17/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND AIMS Increased body fat relates to enhanced inflammatory cytokine production, which, in turn, activates the renin-angiotensin-aldosterone system and increases the risk of chronic kidney disease (CKD). Herein, we aimed to examine the association between obesity and the risk of CKD in a population-representative cohort in Taiwan. METHODS AND RESULTS A multistage systematic sampling process was applied in the National Health Interview Survey (NHIS) 2000, 2005, and 2009. Participants were interviewed by a standardized face-to-face questionnaire to obtain information on their demographics, socioeconomic status, lifestyle factors, and body mass index (BMI). The BMI values were classified as follows: underweight (<18.5 kg/m2), normal (18.5-23.9 kg/m2), overweight (24-26.9 kg/m2), and obesity (≥27 kg/m2). The NHIS dataset was linked to National Health Insurance claims data to identify the incidence of CKD. Univariate and multivariate Cox proportional hazard models with competing risks were used to investigate the association between BMI and CKD incidence. We analyzed 45,012 subjects (mean age, 42.03 years; 50.09% males). During 374,254 person-years of follow-up, a total of 1913 new-onset CKD cases were identified. Kaplan-Meier curves comparing the four BMI groups revealed a significant difference (p < 0.01, log-rank test). After controlling for confounding factors, the relative risk of incident CKD was significantly higher in the obese group compared to the normal-weight group (adjusted hazard ratio = 1.32; 95% confidence interval: 1.17-1.49), with a significant linear trend (p < 0.01). CONCLUSION Obesity was suggested as an independent risk factor for CKD. Further studies focusing on the effect of losing weight on CKD prevention are warranted.
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Affiliation(s)
- Y-J Lai
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Endocrinology and Metabolism, Department of Internal Medicine, Puli Branch of Taichung Veterans General Hospital, Nantou, Taiwan; Department of Exercise Health Science, National Taiwan University of Sport, Taichung, Taiwan
| | - H-Y Hu
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan; Institute of Public Health and Community Medicine Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Y-L Lee
- Institute of Public Health and Community Medicine Research Center, National Yang-Ming University, Taipei, Taiwan; Department of Dentistry, Taipei City Hospital, Taipei, Taiwan; Department of Dentistry, School of Dentistry, National Yang-Ming University, Taipei, Taiwan
| | - P-W Ku
- Graduate Institute of Sports and Health, National Changhua University of Education, Changhua, Taiwan
| | - Y-F Yen
- School of Medicine, National Yang-Ming University, Taipei, Taiwan; Section of Infectious Diseases, Taipei City Hospital, Taipei City Government, Taipei, Taiwan; Department of Health and Welfare, College of City Management, University of Taipei, Taiwan; Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - D Chu
- Institute of Public Health and Community Medicine Research Center, National Yang-Ming University, Taipei, Taiwan; Department of Health Care Management, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan; Department of Neurosurgery, Taipei City Hospital, Taipei, Taiwan; Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
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Xiao J, Chu D, Shah P, Todd B. 176 How Common are Cognitive Errors in Cases Presented at Emergency Medicine Resident Morbidity and Mortality Conference? Ann Emerg Med 2017. [DOI: 10.1016/j.annemergmed.2017.07.203] [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: 11/29/2022]
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O'Neil D, Stewart C, Chu D, Goodspeed D, Gonzalez-Rodriguez P, Aagaard K. The hepatic expressed circadian gene Npas2 influences the metabolic response to a restricted feeding diet and the developing gut microbiome. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hees A, Do T, Ghez AM, Martinez GD, Naoz S, Becklin EE, Boehle A, Chappell S, Chu D, Dehghanfar A, Kosmo K, Lu JR, Matthews K, Morris MR, Sakai S, Schödel R, Witzel G. Testing General Relativity with Stellar Orbits around the Supermassive Black Hole in Our Galactic Center. Phys Rev Lett 2017; 118:211101. [PMID: 28598651 DOI: 10.1103/physrevlett.118.211101] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Indexed: 06/07/2023]
Abstract
We demonstrate that short-period stars orbiting around the supermassive black hole in our Galactic center can successfully be used to probe the gravitational theory in a strong regime. We use 19 years of observations of the two best measured short-period stars orbiting our Galactic center to constrain a hypothetical fifth force that arises in various scenarios motivated by the development of a unification theory or in some models of dark matter and dark energy. No deviation from general relativity is reported and the fifth force strength is restricted to an upper 95% confidence limit of |α|<0.016 at a length scale of λ=150 astronomical units. We also derive a 95% confidence upper limit on a linear drift of the argument of periastron of the short-period star S0-2 of |ω[over ˙]_{S0-2}|<1.6×10^{-3} rad/yr, which can be used to constrain various gravitational and astrophysical theories. This analysis provides the first fully self-consistent test of the gravitational theory using orbital dynamic in a strong gravitational regime, that of a supermassive black hole. A sensitivity analysis for future measurements is also presented.
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Affiliation(s)
- A Hees
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - T Do
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - A M Ghez
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - G D Martinez
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - S Naoz
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - E E Becklin
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - A Boehle
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - S Chappell
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - D Chu
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - A Dehghanfar
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - K Kosmo
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - J R Lu
- Astronomy Department, University of California, Berkeley, California 94720, USA
| | - K Matthews
- Division of Physics, Mathematics, and Astronomy, California Institute of Technology, MC 301-17, Pasadena, California 91125, USA
| | - M R Morris
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - S Sakai
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - R Schödel
- Instituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía S/N, 18008 Granada, Spain
| | - G Witzel
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
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Bondar G, Cadeiras M, Wisniewski N, Esmaeili A, Godoy G, Maque J, Chang E, Bakir M, Kupiec-Weglinski S, Chu D, Bao T, Hai J, Yee R, Li A, Rai M, Tran D, Madrigal L, Togashi R, Ping P, Reed E, Deng M. Leukocyte Time-Dependent Biology and Outcomes in Advanced Heart Failure. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.486] [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: 11/29/2022] Open
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Yen YF, Hu HY, Lee YL, Ku PW, Lin IF, Chu D, Lai YJ. Obesity/overweight reduces the risk of active tuberculosis: a nationwide population-based cohort study in Taiwan. Int J Obes (Lond) 2017; 41:971-975. [PMID: 28280271 DOI: 10.1038/ijo.2017.64] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 02/21/2017] [Accepted: 02/26/2017] [Indexed: 01/08/2023]
Abstract
BACKGROUND Obesity affects immune function by increasing the number of T helper lymphocytes, which may reduce the risk of tuberculosis (TB) infection. However, the effect of obesity on TB development has not been extensively studied. This nationwide population-based cohort study investigated the effect of obesity on TB development in Taiwanese adults. METHODS We included 46 028 adult participants (age ⩾18 years) from three rounds (2001, 2005 and 2009) of the Taiwan National Health Interview Survey. Obesity and overweight were defined as a body mass index (BMI) ⩾27 and 24-26.9 (kg/m2), respectively. Data on BMI and other covariates at baseline were collected by in-person interviews. Incident cases of active TB were identified from the National Health Insurance database. Multivariable logistic regression was used to estimate the associations of obesity and overweight with active TB, with adjustment for age, sex, smoking, alcohol consumption, socioeconomic status and other covariates. RESULTS In total, 241 new cases of active TB occurred during the study period. Obesity (adjusted odds ratio [AOR], 0.43; 95% confident interval [CI], 0.28-0.67) and overweight (AOR, 0.67; 95% CI, 0.49-0.91) were associated with lower risk of incident TB, after adjusting for demographic characteristics and comorbidities. There was a linear dose-response relation of BMI with active TB incidence (AOR per unit change in BMI, 0.92; 95% CI, 0.88-0.95; P <0.001). CONCLUSION Obesity and overweight are associated with lower risk of active TB. Future studies should investigate the underlying mechanisms and clinical and epidemiological consequences of these findings.
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Affiliation(s)
- Y-F Yen
- Section of Infectious Diseases, Taipei City Hospital, Taipei City Government, Taipei, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Health and Welfare, College of City Management, University of Taipei, Taipei, Taiwan
| | - H-Y Hu
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan.,Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
| | - Y-L Lee
- Department of Dentistry, Taipei City Hospital, Taipei, Taiwan.,School of Dentistry, National Yang-Ming University, Taipei, Taiwan
| | - P-W Ku
- Graduate Institute of Sports and Health, National Changhua University of Education, Changhua, Taiwan
| | - I-F Lin
- Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
| | - D Chu
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Neurosurgery, Taipei City Hospital, Taipei, Taiwan.,Department of Health Care Management, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Y-J Lai
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Endocrinology and Metabolism, Department of Internal Medicine, Puli Branch of Taichung Veterans General Hospital, Nantou, Taiwan.,Department of Exercise Health Science, National Taiwan University of Sport, Taichung, Taiwan
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Benz C, Scott G, Chu D, Malato J, Hann B, Park B. Abstract P6-11-01: CDK2 inhibition prevents ERpS294 and restores the ability of tamoxifen to induce regression in breast tumors expressing mutant ESR1. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p6-11-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This abstract was withdrawn by the authors.
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Affiliation(s)
- C Benz
- Buck Institute for Research on Aging, Novato, CA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA
| | - G Scott
- Buck Institute for Research on Aging, Novato, CA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA
| | - D Chu
- Buck Institute for Research on Aging, Novato, CA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA
| | - J Malato
- Buck Institute for Research on Aging, Novato, CA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA
| | - B Hann
- Buck Institute for Research on Aging, Novato, CA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA
| | - B Park
- Buck Institute for Research on Aging, Novato, CA; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA
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Andersson BS, Thall PF, Valdez BC, Milton DR, Al-Atrash G, Chen J, Gulbis A, Chu D, Martinez C, Parmar S, Popat U, Nieto Y, Kebriaei P, Alousi A, de Lima M, Rondon G, Meng QH, Myers A, Kawedia J, Worth LL, Fernandez-Vina M, Madden T, Shpall EJ, Jones RB, Champlin RE. Fludarabine with pharmacokinetically guided IV busulfan is superior to fixed-dose delivery in pretransplant conditioning of AML/MDS patients. Bone Marrow Transplant 2016; 52:580-587. [PMID: 27991894 PMCID: PMC5382042 DOI: 10.1038/bmt.2016.322] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 09/28/2016] [Accepted: 09/30/2016] [Indexed: 11/25/2022]
Abstract
We hypothesized that IV Busulfan (Bu) dosing could be safely intensified through pharmacokinetic (PK-) dose guidance to minimize the inter-patient variability in systemic exposure (SE) associated with body-sized dosing, and this should improve outcome of AML/MDS patients undergoing allogeneic stem cell transplantation (allo-HSCT). To test this hypothesis, we treated 218 patients (median age 50.7 years, male/female 50/50%) with fludarabine (Flu) 40 mg/m2 once daily ×4, each dose followed by IV Bu, randomized to 130 mg/m2 (N=107) or PK-guided to average daily SE, AUC of 6,000 µM-min (N=111), stratified for remission-status, and allo-grafting from HLA-matched donors. Toxicity and graft vs. host disease (GvHD) rates in the groups were similar; the risk of relapse or treatment-related mortality remained higher in the fixed-dose group throughout the 80-month observation period. Further, PK-guidance yielded safer disease-control, leading to improved overall and progression-free survival, most prominently in MDS-patients and in AML-patients not in remission at allo-HSCT. We conclude that AML/MDS patients receiving pretransplant conditioning treatment with our 4-day regimen may benefit significantly from PK-guided Bu-dosing. This could be considered an alternative to fixed dose delivery since it provides the benefit of precise dose delivery to a predetermined SE without increasing risk(s) of serious toxicity and/or GvHD.
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Affiliation(s)
- B S Andersson
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P F Thall
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - B C Valdez
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - D R Milton
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - G Al-Atrash
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - J Chen
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - A Gulbis
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - D Chu
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C Martinez
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - S Parmar
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - U Popat
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Y Nieto
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Kebriaei
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - A Alousi
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M de Lima
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - G Rondon
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Q H Meng
- Division of Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - A Myers
- Division of Pharmacy Research, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - J Kawedia
- Division of Pharmacy Research, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - L L Worth
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - T Madden
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - E J Shpall
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - R B Jones
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - R E Champlin
- Department of Stem Cell Transplantation & Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Benz CC, Scott GK, Chu D, Kaur R, Muthurajah M, Rothschild D, Frazier K, Park BH. Abstract PD2-04: ERα phosphorylation at pS294: A biomarker of ligand or mutational (Y537S, D538G) activation, and a receptor target for CDK2 inhibition. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-pd2-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Certain ERα phosphorylation (p) sites are essential for ERα transcriptional activity; and with development of ERα p-specific antibodies, some of these sites predict endocrine responsiveness. Unlike other ERα p-sites, pS294 has been shown to be induced by ligand activation and not by cross-talking growth factor signals. With development of a new rabbit monoclonal, pS294 induction was found to be dependent on a cyclin-dependent kinase (CDK). This study aimed to identify the specific CDK mediating induction of pS294, determine if ligand-independent ERα activating mutations (Y537S, D538G) also induce pS294, and learn if specific CDK inhibitors might enhance endocrine therapeutic efficacy by suppressing pS294.
Methods: MCF7 cells, untreated (stripped media) or stimulated by estradiol (E2, 10nM) or growth factor (EGF, 5nM), were treated with either CDK-specific knockdown siRNAs or small molecule CDK inhibitors (with indicated specificities): Roscovitine (pan-CDKs); Dinaciclib (CDK1, CDK2, CDK5, CDK9); Palbociclib (CDK4, CDK6); JNJ7706621 (CDK1, CDK2); BMS265246 (CDK1, CDK2); and SNS032 (CDK2, CDK7, CDK9). Whole cell, nuclear or cytosolic lysates were either Western blotted (for ERα or specific CDKs) or first immunoprecipitated (total ERα, pS294-ERα) and then immunoblotted. RT-PCR of cellular RNA quantified pS294-ERα induced transcripts (EGF3, AREG, CXCL12 vs. GAPDH) potentially inhibited by CDK inhibitors. MCF7 overexpressing ERα activating mutations (Y537S, D538G) were produced by either transient transfection or knock-in; knock-in clones were innoculated into immunocompromised mice to assess ligand-independent xenograft tumor growth in vivo, while transfected cells and tumors were assessed for ligand-independent ERα phosphorylation.
Results: CDK2 was determined to be the primary kinase mediating ligand-dependent induction of pS294-ERα, with co-precipitation of cyclins A/E confirming the expected mechanism of CDK2 recruitment to chromatin-bound pS294-ERα. Knock-in MCF7 cells expressing either Y537S or D538G ERα rapidly formed tumors in vivo without E2 supplementation; tumors and transiently transfected cells overexpressing mutated ERα showed pS294 >> pS118 expression, with constitutive pS294 suppressed by Dinaciclib but not by Palbociclib. CDK1/2 inhibitors (Dinaciclib, BMS265246) but not a CDK4/6 inhibitor (Palbociclib) cooperated with tamoxifen (4-HT) to induce apoptosis in wildtype MCF7.
Conclusion: CDK2 is the primary mediator of pS294 induced by either ligand stimulation or ligand-independent mutational activation of ERα. While the CDK4/6 inhibitor Palbociclib is a recently approved adjunct to endocrine therapy, it enhances cytostatic growth arrest without affecting ERα phosphorylation or receptor induced gene expression. In contrast, CDK2 inhibitors like Dinaciclib should be explored for their ability to enhance ER-positive breast cancer cell death in combination with antiestrogens and for their ability to prevent the emergence of constitutively active ERα mutations by suppressing pS294 induction, essential for ERα mediated gene transactivation and breast tumor growth.
Citation Format: Benz CC, Scott GK, Chu D, Kaur R, Muthurajah M, Rothschild D, Frazier K, Park BH. ERα phosphorylation at pS294: A biomarker of ligand or mutational (Y537S, D538G) activation, and a receptor target for CDK2 inhibition. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr PD2-04.
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Affiliation(s)
- CC Benz
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
| | - GK Scott
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
| | - D Chu
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
| | - R Kaur
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
| | - M Muthurajah
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
| | - D Rothschild
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
| | - K Frazier
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
| | - BH Park
- Buck Institute for Research on Aging, Novato, CA; The Johns Hopkins University School of Medicine, Baltimore, MD
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Paoletti C, Aung K, Cannell EM, Darga EP, Chu D, Kidwell KM, Thomas DG, Tokudome N, Brown ME, McNutt LM, Gersch C, Schott AF, Park BH, Robinson DR, Chinnaiyan AM, Rae JM, Hayes DF. Abstract P3-05-01: Molecular analysis of cancer tissue, circulating tumor cells (CTC) and cell-free plasma tumor DNA (ptDNA) suggests variable mechanisms of resistance to endocrine therapy (ET) in estrogen receptor (ER) positive metastatic breast cancer (MBC). Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-05-01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Fifty percent of ER positive MBC patients do not benefit from ET. Potential mechanisms of resistance to ET in this patient population include absence of ER expression by deletion or suppression, alteration in ER signaling pathway genes, or upregulation of multiple growth factor receptor pathways. We hypothesized that genotyping and phenotyping of CTC combined with genomic analysis of ptDNA will provide important insights into the multiple mechanisms of ET resistance and that a set of blood tests might serve as a "liquid biopsy" abrogating the need for tissue specimens.
Methods: Twenty-four patients providing informed consent were enrolled into the Mi CTC-ONCOSEQ study, a companion trial to Mi-ONCOSEQ (the Michigan Oncology Sequencing Program). Seven of these patients (5 with ER immunohistochemistry (IHC) positive and 2 with ER negative cancers) who had available archived primary and metastatic cancer tissue, a research metastatic biopsy for genomic analysis, and who had ≥5CTC/7.5 ml whole blood (WB) characterized for ER protein (CTC-ER) are the focus of this report. All the patients were ET refractory. None of them was progressing on fulvestrant at the time of study entry. CTC enumeration and phenotyping was performed with CellSearch©. Circulating ptDNA was analyzed by droplet digital polymerase chain reaction (ddPCR). ER status from archived tissue was obtained from chart review. ER mRNA expression was determined in the research biopsy of metastatic tissue by using quantitative RNA sequencing. Mutational status of ER gene, ESR1, was determined by Next-gen Sequencing using the Illumina HiSeq 2500 platform.
Results: The 2 control patients with triple negative breast cancer had negative CTC-ER. Discordance between CTC-ER and tissue ER by IHC was observed (Table). Two of the 5 ER positive patients retained CTC-ER positivity (39% and 19% of the CTC). One of them (#7) harbored an ESR1 mutation in the research biopsy tissue and in ptDNA, whereas the other (#14) had wild type (WT) ESR1. CTC-ER protein levels in patients #12, 17 and 24 were negative. All had WT ESR1 in the research biopsy tissue. Of note, patient #12 had WT ESR1 in the research biopsy, but an ESR1 mutation was detected in her ptDNA.
Pt#CTC-ER Tissue-ER ESR1 status in research biopsyESR1 status in ptDNA N[deg]CTC/7.5ml WB% CTC-ER +Primary by IHCMet by IHCMet research biopsy by mRNA 71839%+++Y537SY537S141619%+NA+WTWT12130%+++WTD538G17160%++weakly+WTWT242750%+weakly+weakly+WTWT
Conclusions: These exploratory data suggest heterogeneous mechanisms of resistance to ET in patients with previously determined ER-positive MBC, including ESR1 mutations in ER positive cases (seen in 2 patients) and loss of ER expression (seen in CTC of 3 patients). In contrast, other cancers continue to express WT ESR1, and therefore must have developed alternative mechanisms of resistance. At least 2 of these mechanisms can be detected and monitored with complementary circulating assays: CTC and ptDNA. Further investigations are needed to understand the heterogeneous mechanisms of resistance to ET.
Citation Format: Paoletti C, Aung K, Cannell EM, Darga EP, Chu D, Kidwell KM, Thomas DG, Tokudome N, Brown ME, McNutt LM, Gersch C, Schott AF, Park BH, Robinson DR, Chinnaiyan AM, Rae JM, Hayes DF. Molecular analysis of cancer tissue, circulating tumor cells (CTC) and cell-free plasma tumor DNA (ptDNA) suggests variable mechanisms of resistance to endocrine therapy (ET) in estrogen receptor (ER) positive metastatic breast cancer (MBC). [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P3-05-01.
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Affiliation(s)
- C Paoletti
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - K Aung
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - EM Cannell
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - EP Darga
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - D Chu
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - KM Kidwell
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - DG Thomas
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - N Tokudome
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - ME Brown
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - LM McNutt
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - C Gersch
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - AF Schott
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - BH Park
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - DR Robinson
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - AM Chinnaiyan
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - JM Rae
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - DF Hayes
- University of Michigan Comprehensive Cancer Center (UM CCC), Ann Arbor, MI; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
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Cao CW, Sun LL, Niu F, Liu P, Chu D, Wang ZY. Effects of phenol on metabolic activities and transcription profiles of cytochrome P450 enzymes in Chironomus kiinensis larvae. Bull Entomol Res 2016; 106:73-80. [PMID: 26494514 DOI: 10.1017/s0007485315000826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Phenol, also known as carbolic acid or phenic acid, is a priority pollutant in aquatic ecosystems. The present study has investigated metabolic activities and transcription profiles of cytochrome P450 enzymes in Chironomus kiinensis under phenol stress. Exposure of C. kiinensis larvae to three sublethal doses of phenol (1, 10 and 100 µM) inhibited cytochrome P450 enzyme activity during the 96 h exposure period. The P450 activity measured after the 24 h exposure to phenol stress could be used to assess the level (low or high) of phenol contamination in the environment. To investigate the potential of cytochrome P450 genes as molecular biomarkers to monitor phenol contamination, the cDNA of ten CYP6 genes from the transcriptome of C. kiinensis were identified and sequenced. The open reading frames of the CYP6 genes ranged from 1266 to 1587 bp, encoding deduced polypeptides composed of between 421 and 528 amino acids, with predicted molecular masses from 49.01 to 61.94 kDa and isoelectric points (PI) from 6.01 to 8.89. Among the CYP6 genes, the mRNA expression levels of the CYP6EW3, CYP6EV9, CYP6FV1 and CYP6FV2 genes significantly altered in response to phenol exposure; therefore, these genes could potentially serve as biomarkers in the environment. This study shows that P450 activity combined with one or multiple CYP6 genes could be used to monitor phenol pollution.
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Affiliation(s)
- C W Cao
- School of Forestry,Northeast Forestry University,Harbin,China
| | - L L Sun
- School of Forestry,Northeast Forestry University,Harbin,China
| | - F Niu
- School of Forestry,Northeast Forestry University,Harbin,China
| | - P Liu
- School of Forestry,Northeast Forestry University,Harbin,China
| | - D Chu
- School of Forestry,Northeast Forestry University,Harbin,China
| | - Z Y Wang
- School of Forestry,Northeast Forestry University,Harbin,China
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Wang J, Yu Y, Li LL, Guo D, Tao YL, Chu D. Carposina sasakii (Lepidoptera: Carposinidae) in its Native Range Consists of Two Sympatric Cryptic Lineages as Revealed by Mitochondrial COI Gene Sequences. J Insect Sci 2015; 15:iev063. [PMID: 26136498 PMCID: PMC4535581 DOI: 10.1093/jisesa/iev063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 05/22/2015] [Indexed: 06/04/2023]
Abstract
The genetic differentiation and genetic structure of the peach fruit moth, Carposina sasakii Matsumura (Lepidoptera: Carposinidae), was investigated in China, where the moth is native. The mitochondrial cytochrome c oxidase I (COI) gene of 180 individuals from 16 collections were sequenced and analyzed. The results showed that two sympatric and cryptic mtDNA lineages existed within C. sasakii in China. The genetic differentiation has significant correlation with the geographical distance, but has no evidence for host plant associations. Our results of haplotype distribution suggest that the C. sasakii individuals can naturally move between areas, while the movement of individuals between long-distance locations may be associated with human activities such as the transport of fruit. Finally, an mitochondrial COI gene PCR-RFLP method was developed to differentiate the two cryptic mtDNA lineages within C. sasakii, which provides rapid and reliable tool for the future research of the two lineages.
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Affiliation(s)
- J Wang
- Key Laboratory for Plant Virology of Shandong Province, Plant Protection Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
| | - Y Yu
- Key Laboratory for Plant Virology of Shandong Province, Plant Protection Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
| | - L-L Li
- Key Laboratory for Plant Virology of Shandong Province, Plant Protection Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
| | - D Guo
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Agronomy and Plant Protection, Qingdao Agricultural University, Qingdao, 266109, P. R. China
| | - Y-L Tao
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Agronomy and Plant Protection, Qingdao Agricultural University, Qingdao, 266109, P. R. China
| | - D Chu
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Agronomy and Plant Protection, Qingdao Agricultural University, Qingdao, 266109, P. R. China
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