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Axfors C, Schmitt AM, Janiaud P, Van't Hooft J, Abd-Elsalam S, Abdo EF, Abella BS, Akram J, Amaravadi RK, Angus DC, Arabi YM, Azhar S, Baden LR, Baker AW, Belkhir L, Benfield T, Berrevoets MAH, Chen CP, Chen TC, Cheng SH, Cheng CY, Chung WS, Cohen YZ, Cowan LN, Dalgard O, de Almeida E Val FF, de Lacerda MVG, de Melo GC, Derde L, Dubee V, Elfakir A, Gordon AC, Hernandez-Cardenas CM, Hills T, Hoepelman AIM, Huang YW, Igau B, Jin R, Jurado-Camacho F, Khan KS, Kremsner PG, Kreuels B, Kuo CY, Le T, Lin YC, Lin WP, Lin TH, Lyngbakken MN, McArthur C, McVerry BJ, Meza-Meneses P, Monteiro WM, Morpeth SC, Mourad A, Mulligan MJ, Murthy S, Naggie S, Narayanasamy S, Nichol A, Novack LA, O'Brien SM, Okeke NL, Perez L, Perez-Padilla R, Perrin L, Remigio-Luna A, Rivera-Martinez NE, Rockhold FW, Rodriguez-Llamazares S, Rolfe R, Rosa R, Røsjø H, Sampaio VS, Seto TB, Shahzad M, Soliman S, Stout JE, Thirion-Romero I, Troxel AB, Tseng TY, Turner NA, Ulrich RJ, Walsh SR, Webb SA, Weehuizen JM, Velinova M, Wong HL, Wrenn R, Zampieri FG, Zhong W, Moher D, Goodman SN, Ioannidis JPA, Hemkens LG. Author Correction: Mortality outcomes with hydroxychloroquine and chloroquine in COVID-19 from an international collaborative meta-analysis of randomized trials. Nat Commun 2024; 15:1075. [PMID: 38316844 PMCID: PMC10844287 DOI: 10.1038/s41467-024-45360-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024] Open
Affiliation(s)
- Cathrine Axfors
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Department for Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Andreas M Schmitt
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Medical Oncology, University of Basel, Basel, Switzerland
| | - Perrine Janiaud
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Janneke Van't Hooft
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Amsterdam University Medical Center, Amsterdam University, Amsterdam, the Netherlands
| | - Sherief Abd-Elsalam
- Tropical Medicine and Infectious Diseases Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Ehab F Abdo
- Tropical Medicine and Gastroenterology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Benjamin S Abella
- Department of Emergency Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Javed Akram
- Department of Internal Medicine, Vice Chancellor, University of Health Sciences, Lahore, Punjab, Pakistan
| | - Ravi K Amaravadi
- Abramson Cancer Center and Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Derek C Angus
- Department of Critical Care Medicine, The Clinical Research Investigation and Systems Modeling of Acute Illness (CRISMA) Center, University of Pittsburgh, Pittsburgh, PA, USA
- the UPMC Health System Office of Healthcare Innovation, University of Pittsburgh Medical Centre, Pittsburgh, PA, USA
| | - Yaseen M Arabi
- Intensive Care Department, King Saud Bin Abdulaziz University for Health Sciences and King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Shehnoor Azhar
- Department of Public Health, University of Health Sciences, Lahore, Punjab, Pakistan
| | - Lindsey R Baden
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA, USA
| | - Arthur W Baker
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Leila Belkhir
- Infectious Diseases Department, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Thomas Benfield
- Center of Research & Disruption of Infectious Diseases, Department of Infectious Diseases, Copenhagen University Hospital, Amager and Hvidovre, Hvidovre, Denmark
| | - Marvin A H Berrevoets
- Department of Internal Medicine, Elisabeth-Tweesteden hospital, Tilburg, Netherlands
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Tsung-Chia Chen
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Wei-Sheng Chung
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | | | | | - Olav Dalgard
- Department of Infectious Diseases, Division of Medicine, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | - Marcus V G de Lacerda
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Instituto Leonidas e Maria Deane - ILMD, FIOCRUZ-AM, Manaus, AM, Brazil
| | - Gisely C de Melo
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Universidade do Estado do Amazonas, Manaus, AM, Brazil
| | - Lennie Derde
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands
- Intensive Care Centre, University Medical Center Utrecht, Utrecht, Netherlands
| | - Vincent Dubee
- Infectious and Tropical Diseases Department, Angers University Hospital, Angers, France
| | | | - Anthony C Gordon
- Department of Surgery and Cancer, Anaesthetics, Pain Medicine, and Intensive Care Medicine, Imperial College London and Imperial College Healthcare NHS Trust, London, UK
| | - Carmen M Hernandez-Cardenas
- Critical Care Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Thomas Hills
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Auckland City Hospital, Auckland, New Zealand
| | - Andy I M Hoepelman
- Department of Infectious Diseases, University Medical Center Utrecht, Utrecht, Netherlands
| | - Yi-Wen Huang
- Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | | | - Ronghua Jin
- Beijing Youan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Felipe Jurado-Camacho
- Critical Care Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Khalid S Khan
- Department of Preventive Medicine & Public Health, University of Granada, Hospital Real, Avenida del Hospicio, Granada, Granada, Spain
| | - Peter G Kremsner
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- German Center for Infection Research, Partner Site Tübingen, Tübingen, Germany
| | - Benno Kreuels
- Department of Medicine, Division of Tropical Medicine and Division of Infectious Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Tropical Medicine, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Cheng-Yu Kuo
- Department of Internal Medicine, Pingtung Hospital, Ministry of Health and Welfare, Pingtung, Taiwan
| | - Thuy Le
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Wu-Pu Lin
- Department of Internal Medicine, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
| | - Tse-Hung Lin
- Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | - Magnus Nakrem Lyngbakken
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Colin McArthur
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Auckland City Hospital, Auckland, New Zealand
- School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Bryan J McVerry
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Wuelton M Monteiro
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Universidade do Estado do Amazonas, Manaus, AM, Brazil
| | | | - Ahmad Mourad
- Department of Medicine, Duke University Medical Center, Durham, NC, 27710, USA
| | - Mark J Mulligan
- Department of Microbiology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Internal Medicine, Division of Infectious Diseases and Immunology, NYU Grossman School of Medicine, New York, NY, USA
| | - Srinivas Murthy
- University of British Columbia School of Medicine, Vancouver, BC, Canada
| | - Susanna Naggie
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Shanti Narayanasamy
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Alistair Nichol
- School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
- Department of Intensive Care, Alfred Health, Melbourne, VIC, Australia
- Department of Anesthesia and Intensive Care, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - Lewis A Novack
- Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sean M O'Brien
- Department of Biostatistics and Bioinformatics, Duke University Medical Center and Duke Clinical Research Institute, Durham, NC, USA
| | - Nwora Lance Okeke
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | | | - Rogelio Perez-Padilla
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | | | - Arantxa Remigio-Luna
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | | | - Frank W Rockhold
- Department of Biostatistics and Bioinformatics, Duke University Medical Center and Duke Clinical Research Institute, Durham, NC, USA
| | - Sebastian Rodriguez-Llamazares
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Robert Rolfe
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | | | - Helge Røsjø
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Division of Research and Innovation, Akershus University Hospital, Lørenskog, Norway
| | - Vanderson S Sampaio
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Fundação de Vigilância em Saúde do Amazonas, Manaus, AM, Brazil
| | - Todd B Seto
- University of Hawaii John A. Burns School of Medicine, Honolulu, HI, USA
- The Queen's Medical Center, Honolulu, HI, USA
| | - Muhammad Shahzad
- Department of Pharmacology, University of Health Sciences, Lahore, Punjab, Pakistan
| | - Shaimaa Soliman
- Public Health and Community Medicine, Menoufia University, Menoufia, Egypt
| | - Jason E Stout
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Ireri Thirion-Romero
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Andrea B Troxel
- Division of Biostatistics, Department of Population Health, NYU Grossman School of Medicine, New York, NY, USA
| | - Ting-Yu Tseng
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Nicholas A Turner
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Robert J Ulrich
- Department of Medicine, Division of Infectious Diseases and Immunology, NYU Grossman School of Medicine, New York, NY, USA
| | - Stephen R Walsh
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA, USA
| | - Steve A Webb
- School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
- St. John of God Hospital, Subiaco, WA, Australia
| | - Jesper M Weehuizen
- Department of Infectious Diseases, University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Hon-Lai Wong
- Department of Internal Medicine, Keelung Hospital, Ministry of Health and Welfare, Keelung, Taiwan
| | - Rebekah Wrenn
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Fernando G Zampieri
- Research Institute, HCor-Hospital do Coração, São Paulo, Brazil
- Research Institute, BRICNet-Brazilian Research in Intensive Care Network, São Paulo, Brazil
- IDor Research Institute, São Paulo, Brazil
| | - Wu Zhong
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing, People's Republic of China
| | - David Moher
- Centre for Journalology, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Steven N Goodman
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Stanford University School of Medicine, Stanford, CA, USA
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA
| | - John P A Ioannidis
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Stanford University School of Medicine, Stanford, CA, USA
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Prevention Research Center, Department of Medicine, Stanford University, Stanford, CA, USA
- Meta-Research Innovation Center Berlin (METRIC-B), Berlin Institute of Health, Berlin, Germany
| | - Lars G Hemkens
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA.
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland.
- Meta-Research Innovation Center Berlin (METRIC-B), Berlin Institute of Health, Berlin, Germany.
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Chen TH, Lin SC, Chiou JF, Chen CP, Hsu SM, Tseng KH, Lu LS. Analysis of Skin Dose and Position Stability for a New Personalized Device for Breast Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e169. [PMID: 37784774 DOI: 10.1016/j.ijrobp.2023.06.1009] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Whole breast irradiation is the standard treatment for patients with early-stage breast cancer. We previously developed a personalized breast support device (PERSBRA) that reduced heart and lung radiation exposure. However, the skin dose was concerned for the device due to its thickness. In this study, we designed the new honeycomb structures to reduce the dose to the skin and maintain stable breast position with this device. MATERIALS/METHODS Three different structures of PERSBRA were designed. They were solid structure, honeycomb structures with 3.5 mm wall thickness and honeycomb structures with 4.5 mm wall thickness respectively. Those patients who scheduled to receive whole breast irradiation were enrolled for anthropometric breast position analysis. Stability of breast position in supine with PERSBRA were analyzed by scanning with a 3D infrared scanner. The distances between the nipples, between the nipple and the xiphoid process, and between the nipple and the inframammary fold were used to be the index. 32 patients were enrolled for anthropometric breast position analysis. The skin dose was simulated using the thermoluminescent dosimeter (TLD) positioned on the phantom with PERSBRA in the treatment scenario. RESULTS The displacements between two nipples, the nipple and the infra mammary point, and the nipple and the xiphoid process were 1.4%, 1.2%, and 0.4% for 3.5 mm honeycomb structure. Meanwhile, these displacements were 0.8%, 0.7% and 0.2% for solid 10% structure. Compared to these results, there were no significant difference for the two designations. The surface dose simulating the treatment scenario were 78.27%, 89.39% and 91.9% of prescribed dose for the 3.5mm, 4.5 mm honeycomb structure and the solid 10% filled structure, respectively. The 3.5 mm honeycomb structure reduce the surface dose significantly compared to another two designations. CONCLUSION The honeycomb structures do not jeopardize mechanical properties of PERSBRA or the breast positional stability support. Moreover, honeycomb structure with 3.5 mm thickness effectively reduces skin surface dose on a breast phantom. These data encourage further clinical studies to investigate the effects of such design on radiation dermatitis during whole breast irradiation.
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Affiliation(s)
- T H Chen
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei, Taiwan
| | - S C Lin
- Department of Graduate Institution of Biomedical Material and Tissue Engineering, Taipei Medical University, Taipei, Taiwan
| | - J F Chiou
- Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - C P Chen
- Department of Radiation Oncology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - S M Hsu
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - K H Tseng
- Department of Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - L S Lu
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
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Paulose AK, Hou YJ, Huang YS, Chakkalaparambil Dileep N, Chiu CL, Pal A, Kalaimani VM, Lin ZH, Chang CR, Chen CP, Lin YC, Cheng CY, Cheng SH, Cheng CM, Wang YL. Rapid Escherichia coli Cloned DNA Detection in Serum Using an Electrical Double Layer-Gated Field-Effect Transistor-Based DNA Sensor. Anal Chem 2023; 95:6871-6878. [PMID: 37080900 DOI: 10.1021/acs.analchem.2c05719] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
In this study, a rapid diagnosis platform was developed for the detection of Escherichia coli O157:H7. An electrical double layer (EDL)-gated field-effect transistor-based biosensor (BioFET) as a point-of-care testing device is demonstrated with its high sensitivity, portability, high selectivity, quick response, and ease of use. The specially designed ssDNA probe was immobilized on the extended gate electrode to bind the target complementary DNA segment of E. coli, resulting in a sharp drain current change within minutes. The limit of detection for target DNA is validated to a concentration of 1 fM in buffer solution and serum. Meanwhile, the results of a Kelvin probe force microscope were shown to have reduced surface potential of the DNA immobilized sensors before and after the cDNA detection, which is consistent with the decreased drain current of the BioFET. A 1.2 kb E. coli duplex DNA synthesized in plasmid was sonicated and detected in serum samples with the sensor array. Gel electrophoresis was used to confirm the efficiency of sonication by elucidating the length of DNA. Those results show that the EDL-gated BioFET system is a promising platform for rapid identification of pathogens for future clinical needs.
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Affiliation(s)
- Akhil K Paulose
- Institute of Nanoengineering and Microsystems, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Yueh-Ju Hou
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung 811726, Taiwan, ROC
| | - Yu-Shan Huang
- Institute of Nanoengineering and Microsystems, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | | | - Chia-Lin Chiu
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Arnab Pal
- International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Vishal Mani Kalaimani
- Institute of Nanoengineering and Microsystems, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Zong-Hong Lin
- Department of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Chuang-Rung Chang
- Institute of Biotechnology, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 32748, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 32748, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 32748, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 32748, Taiwan
| | - Chao-Min Cheng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Yu-Lin Wang
- Institute of Nanoengineering and Microsystems, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- College of Semiconductor Research, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
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Huang YF, Hsu FC, Wu JJ, Lin YL, Liu MT, Yang CH, Kuo HS, Chen YJ, Cheng CY, Lin HH, Liao CC, Chang CS, Liang JJ, Cheng WY, Huang JC, Chen CP, Cheng SH, Lin YC, Yang SH, Chou YJ. Longitudinal Neutralizing Antibody Responses after SARS-CoV-2 Infection: A Convalescent Cohort Study in Taiwan. J Microbiol Immunol Infect 2023:S1684-1182(23)00072-5. [PMID: 36967265 PMCID: PMC10019033 DOI: 10.1016/j.jmii.2023.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 03/01/2023] [Accepted: 03/12/2023] [Indexed: 03/18/2023]
Abstract
Background Understanding the neutralizing antibody (NAb) titer against COVID-19 over time is important to provide information for vaccine implementation. The longitudinal NAb titer over one year after SARS-CoV-2 infection is still unclear. The purposes of this study are to evaluate the duration of the neutralizing NAb titers in COVID-19 convalescents and factors associated with the titer positive duration. Methods A cohort study followed COVID-19 individuals diagnosed between 2020 and 2021 May 15th from the COVID-19 database from the Taiwan Centers for Disease Control. We analyzed NAb titers from convalescent SARS-CoV-2 individuals. We used generalized estimating equations (GEE) and a Cox regression model to summarize the factors associated with NAb titers against COVID-19 decaying in the vaccine-free population. Results A total of 203 convalescent subjects with 297 analytic samples were followed for a period of up to 588 days. Our study suggests that convalescent COVID-19 in individuals after more than a year and four months pertains to only 25% of positive titers. The GEE model indicates that longer follow-up duration was associated with a significantly lower NAb titer. The Cox regression model indicated the disease severity with advanced condition was associated with maintaining NAb titers (adjusted hazard ratio: 2.08, 95% CI: 1.12–3.61) and that non-smoking also was associated with maintaining NAb titers (adjusted hazard ratio: 1.69, 95% CI: 1.08–2.64). Conclusions Neutralizing antibody titers diminished after more than a year. The antibody titer response against SARS-CoV-2 in naturally convalescent individuals provides a reference for vaccinations.
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Affiliation(s)
- Yen-Fang Huang
- Research Center for Epidemic Prevention and One Health, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Fang-Chi Hsu
- Research Center for Epidemic Prevention and One Health, National Yang Ming Chiao Tung University, Taipei, Taiwan,Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Jiunn-Jong Wu
- Department of Biotechnology and Laboratory Science in Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan,Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan,Corresponding author. ; Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan. No. 500, Lioufeng Road, Wufeng, Taichung City 41354, Taiwan. Tel.: +886-4- 23323456x5101; fax: +886 4 23321215
| | - Yi-Ling Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan,Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan,Corresponding author. ; Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd. Nankang, Taipei 115, Taiwan. Tel.: +886 2 26523902; fax: +886 2 28264092
| | - Ming-Tsan Liu
- Center for Diagnostic and Vaccine Development, Centers for Disease Control, Taiwan,Corresponding author. ; Center for Diagnostic and Vaccine Development, Centers for Disease Control, No.161, Kunyang St., Nangang Dist., Taipei City 115210, Taiwan. Tel.: +886 2 28850513; fax: +886 2 28264092
| | - Chin-Hui Yang
- Division of Acute Infectious Diseases, Centers for Disease Control, Taiwan
| | - Hsu-Sung Kuo
- Research Center for Epidemic Prevention and One Health, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yen-Ju Chen
- Research Center for Epidemic Prevention and One Health, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan,Institute of Public Health, School of Medicine National Yang-Ming Chiao Tung University
| | - His-Hsun Lin
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan,School of Medicine, College of Medicine, National Sun Yat-Sen University, Kaohsiung, Taiwan,Institute of Clinical Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Chun-Che Liao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chih-Shin Chang
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Jian-Jong Liang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Wen-Yueh Cheng
- Center for Diagnostic and Vaccine Development, Centers for Disease Control, Taiwan
| | - Jason C. Huang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan,Institute of Clinical Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Shung-Haur Yang
- National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan
| | - Yiing-Jenq Chou
- National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan
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Chao TL, Lee WH, Hu HC, Lin YC, Ho SY, Chen HH, Chen CP, Tsai YM, Fang JT, Leong SM, Cheng YC, Peng M, Cheng SH, Cheng CY, Chang SY. Clinical assessment of SARS-CoV-2 infectivity by rapid antigen test compared with virus isolation. J Clin Virol Plus 2023; 3:100133. [PMID: 36594045 PMCID: PMC9798665 DOI: 10.1016/j.jcvp.2022.100133] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Although real-time reverse transcriptase polymerase chain reaction (real-time RT-PCR) remains as a golden standard for detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, it can not be easily expanded to large-scaled screening during outbreaks, and the positive results do not necessarily correlate with infectious status of the identified subjects. In this study, the performance of Vstrip® RV2 COVID-19 Antigen Rapid Test (RAT) and its correlation with virus infectivity was examined by virus culture using 163 sequential respiratory specimens collected from 26 SARS-CoV-2 infected patients. When the presence of cytopathic effects (CPE) in cell culture was used as a reference method for virus infectivity, the sensitivity, specificity and accuracy of Vstrip® RV2 COVID-19 Antigen Rapid Test was 96.43%, 89.63%, and 90.8%, respectively. The highest Ct value was 27.7 for RdRp gene and 25.79 for E gene within CPE-positive samples, and the highest Ct value was 31.9 for RdRp gene and 29.1 for E gene within RAT positive samples. When the Ct values of specimens were below 25, the CPE and RAT results had high degree of consistency. We concluded that the RAT could be a great alternative method for determining the infectious potential of individuals with high viral load.
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Affiliation(s)
- Tai-Ling Chao
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan,Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Wen-Hau Lee
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan
| | - Hui-Chun Hu
- Department of Nursing, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Shu-Yuan Ho
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Hou Chen
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan,School of Clinical Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Ya-Min Tsai
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan
| | - Jun-Tung Fang
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan
| | - Si-Man Leong
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan
| | - Yu-Chen Cheng
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan
| | - Mavis Peng
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan,School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan,Institute of Public Health, School of Medicine National Yang-Ming Chiao Tung University, Taipei, Taiwan,Corresponding authors
| | - Sui-Yuan Chang
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taiwan,Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan,Corresponding authors
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6
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Lin CW, Hsu WC, Lu CL, Cheng SH, Chen CP, Hou YC. Integrated therapeutic plasma exchange and traditional Chinese medicine treatment in a patient with severe COVID-19: A case report. J Integr Med 2022; 20:575-580. [PMID: 36123283 PMCID: PMC9439864 DOI: 10.1016/j.joim.2022.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 02/06/2022] [Indexed: 11/09/2022]
Abstract
This report presents the case of a 59-year-old man with severe COVID-19 that gradually progressed to cytokine release syndrome and then acute respiratory distress syndrome; he was successfully treated via integration of therapeutic plasma exchange and traditional Chinese medicine. The patient initially presented with a sore throat, severe muscle aches, productive cough and fever. On the worsening of symptoms, remdesivir was administered. However, as the symptoms continued to worsen and a cytokine release syndrome was suspected, oxygen was provided through a high-flow nasal cannula (50 L/min) and therapeutic plasma exchange was performed to prevent worsening of the acute respiratory distress syndrome. On the same day, a course of traditional Chinese medicine was introduced in consultation with the infectious house staff. The patient's symptoms gradually improved; the levels of C-reactive protein and D-dimers reduced, and the patient was weaned to a simple oxygen mask and eventually to room air. This is the first reported case of the integration of these treatments. Together, they prevented the patient from requiring intubation, played a role in cytokine management, and also improved the clinical symptoms, including productive purulent sputum, cough, frequent stool passage and intermittent fever, with no adverse effects. As a result, the patient was discharged within two weeks of the integration of these treatments. Therefore, the integration of therapeutic plasma exchange and traditional Chinese medicine is an effective therapy for patients with severe COVID-19.
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Affiliation(s)
- Chia-Wei Lin
- Department of Chinese Medicine, Taoyuan General Hospital, Taoyuan City 330, Taiwan, China
| | - Wei-Chen Hsu
- Department of Chinese Medicine, Taoyuan General Hospital, Taoyuan City 330, Taiwan, China
| | - Chien-Lu Lu
- Department of Nephrology, Taoyuan General Hospital, Taoyuan City 330, Taiwan, China
| | - Su-Hsing Cheng
- Department of Infectious Disease, Taoyuan General Hospital, Taoyuan City 330, Taiwan, China,School of Public Health, Taipei Medical University, Taipei City 110, Taiwan, China
| | - Cheng-Pin Chen
- Department of Infectious Disease, Taoyuan General Hospital, Taoyuan City 330, Taiwan, China.
| | - Yu-Chang Hou
- Department of Chinese Medicine, Taoyuan General Hospital, Taoyuan City 330, Taiwan, China; Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan City 320, Taiwan, China; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung City 404, Taiwan, China; School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan, China.
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7
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Cheng SH, Lin YC, Chen CP, Cheng CY. Safety and Immunogenicity of a Heterologous Booster of Protein Subunit Vaccine MVC-COV1901 after Two Doses of Adenoviral Vector Vaccine AZD1222. Vaccines (Basel) 2022; 10:vaccines10101701. [PMID: 36298566 PMCID: PMC9609613 DOI: 10.3390/vaccines10101701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/06/2022] [Accepted: 10/07/2022] [Indexed: 11/24/2022] Open
Abstract
We report the safety and immunogenicity results in participants administrated with a booster dose of protein subunit vaccine MVC-COV1901 at 12 (Group A) or 24 (Group B) weeks after two doses of AZD1222 (ChAdOx1 nCoV-19). The administration of the MVC-COV1901 vaccine as a booster dose in both groups was generally safe. There were no serious adverse events related to the intervention as adverse events reported were “mild” or “moderate” in nature. In subjects fully vaccinated with two doses of AZD1222, waning antibody immunity was apparent within six months of the second dose of AZD1222. At one month after the MVC-COV1901 booster dose, those who were vaccinated within 12 weeks after the last AZD1222 dose (Group A) had anti-SARS-CoV-2 spike IgG antibody titers and neutralizing antibody titers which were 14- and 6.5-fold increased, respectively, when compared to the titer levels on the day of the booster dose. On the other hand, fold-increase a month post-booster in people who had a booster 24 weeks after the last AZD1222 dose (Group B) were 19.5 and 14.0 times for anti-SARS-CoV-2 spike IgG antibody titers and neutralizing antibody titers, respectively. Among those who were vaccinated within 12 weeks after the last AZD1222 dose, we also observed 5.2- and 5.6-fold increases in neutralizing titer levels against ancestral strain and Omicron variant pseudovirus after the booster dose, respectively. These results support the use of MVC-COV1901 as a heterologous booster for individuals vaccinated with AZD1222. Furthermore, regardless of the dosing schedule, the combination of AZD1222 primary series and MVC-COV1901 booster can be cost-effective and suitably applied to low- and middle-income countries (LMIC).
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Affiliation(s)
- Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan
- School of Public Health, Taipei Medical University, Taipei 110, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan
- Institute of Public Health, School of Medicine, National Yang-Ming Chiao Tung University, Taipei 112, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan
- School of Clinical Medicine, National Yang-Ming Chiao Tung University, Taipei 112, Taiwan
- Correspondence: ; Tel.: +886-33-699-721
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8
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Estrada JA, Cheng CY, Ku SY, Hu HC, Yeh HW, Lin YC, Chen CP, Cheng SH, Janssen R, Lin IF. An Immunobridging Study to Evaluate the Neutralizing Antibody Titer in Adults Immunized with Two Doses of Either ChAdOx1-nCov-19 (AstraZeneca) or MVC-COV1901. Vaccines (Basel) 2022; 10:vaccines10050655. [PMID: 35632411 PMCID: PMC9146038 DOI: 10.3390/vaccines10050655] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 03/03/2022] [Revised: 04/11/2022] [Accepted: 04/15/2022] [Indexed: 01/22/2023] Open
Abstract
Rapid development and deployment of vaccines is crucial to control the continuously evolving COVID-19 pandemic. The placebo-controlled phase 3 efficacy trial is still the standard for authorizing vaccines in the majority of the world. However, due to a lack of eligible participants in parts of the world, this has not always been feasible. Recently, the Taiwan Food and Drug Administration, following the consensus of the International Coalition of Medicines Regulatory Authorities (ICMRA), adopted the use of immunobridging studies as acceptable for authorizing COVID-19 vaccines in lieu of efficacy data. Here, we describe a study in which our candidate vaccine, MVC-COV1901, an adjuvanted protein subunit vaccine, has been granted emergency use authorization (EUA) in Taiwan based on a noninferiority immunobridging study. Immunogenicity results from the per protocol immunogenicity (PPI) subset (n = 903) from the MVC-COV1901 phase 2 trial were compared with results from 200 subjects who had received an adenovirus vector vaccine, AstraZeneca ChAdOx nCOV-19 (AZD1222), in a separate study. The lower bound of the 95% confidence interval (CI) of the geometric mean titer (GMT) ratio comparing MVC-COV1901 to AZD1222 was 3.4. The lower bound of the 95% CI of the sero-response rate was 95.5%. Both the GMT ratio and sero-response rate exceeded the criteria established by the Taiwan regulatory authority, leading to EUA approval of MVC-COV1901 in Taiwan.
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Affiliation(s)
- Josue Antonio Estrada
- International and Governmental Affairs, Medigen Vaccine Biologics Corporation, Taipei 114, Taiwan;
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan; (Y.-C.L.); (C.-P.C.); (S.-H.C.)
- Institute of Public Health, School of Medicine, National Yang-Ming Chiao Tung University, Taipei 112, Taiwan
- Correspondence: (C.-Y.C.); (I.-F.L.); Tel.: +886-3-3699721 (C.-Y.C.)
| | - Shin-Yen Ku
- Department of Nursing, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan; (S.-Y.K.); (H.-C.H.); (H.-W.Y.)
| | - Hui-Chun Hu
- Department of Nursing, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan; (S.-Y.K.); (H.-C.H.); (H.-W.Y.)
| | - Hsiu-Wen Yeh
- Department of Nursing, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan; (S.-Y.K.); (H.-C.H.); (H.-W.Y.)
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan; (Y.-C.L.); (C.-P.C.); (S.-H.C.)
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan; (Y.-C.L.); (C.-P.C.); (S.-H.C.)
- School of Clinical Medicine, National Yang-Ming Chiao Tung University, Taipei 112, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan; (Y.-C.L.); (C.-P.C.); (S.-H.C.)
- School of Public Health, Taipei Medical University, Taipei 110, Taiwan
| | - Robert Janssen
- Regulatory and Medical Affairs, Dynavax Technologies Corporation, Emeryville, CA 94608, USA;
| | - I-Feng Lin
- Institute of Public Health, School of Medicine, National Yang-Ming Chiao Tung University, Taipei 112, Taiwan
- Correspondence: (C.-Y.C.); (I.-F.L.); Tel.: +886-3-3699721 (C.-Y.C.)
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9
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Cheng CY, Ku SY, Lin YC, Chen CP, Cheng SH, Lin IF. Incidence and Risk Factors of Reinfection with HCV after Treatment in People Living with HIV. Viruses 2022; 14:v14020439. [PMID: 35216032 PMCID: PMC8874599 DOI: 10.3390/v14020439] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/08/2022] [Accepted: 02/17/2022] [Indexed: 02/04/2023] Open
Abstract
Infection with hepatitis C virus (HCV) does not induce protective immunity, and re-exposure to HCV can reinfect the population engaging in high-risk behavior. An increasing incidence of acute hepatitis C infection in people living with HIV (PLWH) has been described in recent years. This retrospective cohort study was conducted in PLWH who completed HCV therapy between June 2009 and June 2020 at an HIV care hospital, to analyze their basic characteristics and risky behavior. Of 2419 patients, 639 were diagnosed with HCV infection and 516 completed the HCV therapy with a sustained virologic response. In total, 59 patients (11.4%) were reinfected with acute hepatitis C, and the median time to reinfection was 85.3 weeks (IQR: 57–150). The incidence of reinfection was 6.7 cases/100 person-years. The factors associated with reinfection were being male (AHR, 8.02; 95% CI 1.08–59.49), DAA (direct-acting antiviral) treatment (AHR, 2.23; 95% CI 1.04–4.79), liver cirrhosis (AHR, 3.94; 95% CI 1.09–14.22), heroin dependency (AHR: 7.41; 95% CI 3.37–14.3), and HIV viral loads <50 copies/mL at the follow-up (AHR: 0.47, 95% CI 0.24–0.93) in the subgroup of people who inject drugs (PWID). Amphetamine abuse (AHR: 20.17; 95% CI 2.36–172.52) was the dominant factor in the subgroup of men who have sex with men (MSM). Our study suggests that education and behavioral interventions are needed in this population to prevent reinfection.
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Affiliation(s)
- Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan City 330, Taiwan; (C.-Y.C.); (Y.-C.L.); (C.-P.C.); (S.-H.C.)
- Institute of Public Health, School of Medicine, National Yang-Ming Chiao Tung University, Taipei City 112, Taiwan
| | - Shin-Yen Ku
- Department of Nursing, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan City 330, Taiwan;
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan City 330, Taiwan; (C.-Y.C.); (Y.-C.L.); (C.-P.C.); (S.-H.C.)
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan City 330, Taiwan; (C.-Y.C.); (Y.-C.L.); (C.-P.C.); (S.-H.C.)
- School of Clinical Medicine, National Yang-Ming Chiao Tung University, Taipei City 112, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan City 330, Taiwan; (C.-Y.C.); (Y.-C.L.); (C.-P.C.); (S.-H.C.)
- School of Public Health, Taipei Medical University, Taipei City 110, Taiwan
| | - I-Feng Lin
- Institute of Public Health, School of Medicine, National Yang-Ming Chiao Tung University, Taipei City 112, Taiwan
- Correspondence:
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Huang KYA, Zhou D, Tan TK, Chen C, Duyvesteyn HME, Zhao Y, Ginn HM, Qin L, Rijal P, Schimanski L, Donat R, Harding A, Gilbert-Jaramillo J, James W, Tree JA, Buttigieg K, Carroll M, Charlton S, Lien CE, Lin MY, Chen CP, Cheng SH, Chen X, Lin TY, Fry EE, Ren J, Ma C, Townsend AR, Stuart DI. Structures and therapeutic potential of anti-RBD human monoclonal antibodies against SARS-CoV-2. Theranostics 2022; 12:1-17. [PMID: 34987630 PMCID: PMC8690919 DOI: 10.7150/thno.65563] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/18/2021] [Indexed: 01/13/2023] Open
Abstract
Background: Administration of potent anti-receptor-binding domain (RBD) monoclonal antibodies has been shown to curtail viral shedding and reduce hospitalization in patients with SARS-CoV-2 infection. However, the structure-function analysis of potent human anti-RBD monoclonal antibodies and its links to the formulation of antibody cocktails remains largely elusive. Methods: Previously, we isolated a panel of neutralizing anti-RBD monoclonal antibodies from convalescent patients and showed their neutralization efficacy in vitro. Here, we elucidate the mechanism of action of antibodies and dissect antibodies at the epitope level, which leads to a formation of a potent antibody cocktail. Results: We found that representative antibodies which target non-overlapping epitopes are effective against wild type virus and recently emerging variants of concern, whilst being encoded by antibody genes with few somatic mutations. Neutralization is associated with the inhibition of binding of viral RBD to ACE2 and possibly of the subsequent fusion process. Structural analysis of representative antibodies, by cryo-electron microscopy and crystallography, reveals that they have some unique aspects that are of potential value while sharing some features in common with previously reported neutralizing monoclonal antibodies. For instance, one has a common VH 3-53 public variable region yet is unusually resilient to mutation at residue 501 of the RBD. We evaluate the in vivo efficacy of an antibody cocktail consisting of two potent non-competing anti-RBD antibodies in a Syrian hamster model. We demonstrate that the cocktail prevents weight loss, reduces lung viral load and attenuates pulmonary inflammation in hamsters in both prophylactic and therapeutic settings. Although neutralization of one of these antibodies is abrogated by the mutations of variant B.1.351, it is also possible to produce a bi-valent cocktail of antibodies both of which are resilient to variants B.1.1.7, B.1.351 and B.1.617.2. Conclusions: These findings support the up-to-date and rational design of an anti-RBD antibody cocktail as a therapeutic candidate against COVID-19.
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MESH Headings
- Angiotensin-Converting Enzyme 2/genetics
- Angiotensin-Converting Enzyme 2/metabolism
- Animals
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/metabolism
- Antibodies, Monoclonal/pharmacology
- Antibodies, Neutralizing/chemistry
- Antibodies, Neutralizing/immunology
- Antibodies, Neutralizing/pharmacology
- Binding Sites
- Binding, Competitive
- COVID-19/virology
- Cricetinae
- Cryoelectron Microscopy
- Crystallography, X-Ray
- Dogs
- Epitopes
- Female
- Humans
- Madin Darby Canine Kidney Cells
- Neutralization Tests
- Protein Domains
- SARS-CoV-2/genetics
- SARS-CoV-2/immunology
- SARS-CoV-2/metabolism
- SARS-CoV-2/pathogenicity
- Spike Glycoprotein, Coronavirus/genetics
- Spike Glycoprotein, Coronavirus/immunology
- Spike Glycoprotein, Coronavirus/metabolism
- COVID-19 Drug Treatment
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Affiliation(s)
- Kuan-Ying A. Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Daming Zhou
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Charles Chen
- Medigen Vaccine Biologics Corporation, Taipei, Taiwan
- Temple University, Philadelphia, PA 19122, USA
| | - Helen M. E. Duyvesteyn
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Yuguang Zhao
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Helen M. Ginn
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Ling Qin
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Lisa Schimanski
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Robert Donat
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Adam Harding
- Sir William Dunn School of Pathology, South Park Road, University of Oxford, UK
| | | | - William James
- Sir William Dunn School of Pathology, South Park Road, University of Oxford, UK
| | - Julia A. Tree
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Karen Buttigieg
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Miles Carroll
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Sue Charlton
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Chia-En Lien
- Medigen Vaccine Biologics Corporation, Taipei, Taiwan
- Institute of Public Health, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Meei-Yun Lin
- Medigen Vaccine Biologics Corporation, Taipei, Taiwan
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and National Yang-Ming University, Taipei, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and Taipei Medical University, Taipei, Taiwan
| | - Xiaorui Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Tzou-Yien Lin
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Elizabeth E. Fry
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Jingshan Ren
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Che Ma
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Alain R. Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - David I. Stuart
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
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Lin RF, Cheng SH, Liu YP, Chen CP, Wang YJ, Chang SY. Predicting Emotional Valence of People Living with the Human Immunodeficiency Virus Using Daily Voice Clips: A Preliminary Study. Healthcare (Basel) 2021; 9:1148. [PMID: 34574921 PMCID: PMC8466484 DOI: 10.3390/healthcare9091148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/29/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022] Open
Abstract
To detect depression in people living with the human immunodeficiency virus (PLHIV), this preliminary study developed an artificial intelligence (AI) model aimed at discriminating the emotional valence of PLHIV. Sixteen PLHIV recruited from the Taoyuan General Hospital, Ministry of Health and Welfare, participated in this study from 2019 to 2020. A self-developed mobile application (app) was installed on sixteen participants' mobile phones and recorded their daily voice clips and emotional valence values. After data preprocessing of the collected voice clips was conducted, an open-source software, openSMILE, was applied to extract 384 voice features. These features were then tested with statistical methods to screen critical modeling features. Several decision-tree models were built based on various data combinations to test the effectiveness of feature selection methods. The developed model performed very well for individuals who reported an adequate amount of data with widely distributed valence values. The effectiveness of feature selection methods, limitations of collected data, and future research were discussed.
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Affiliation(s)
- Ray F. Lin
- Department of Industrial Engineering and Management, Yuan Ze University, Taoyuan 32003, Taiwan; (R.F.L.); (Y.-J.W.)
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 33004, Taiwan; (S.-H.C.); (C.-P.C.); (S.-Y.C.)
- School of Public Health, Taipei Medical University, Taipei 110301, Taiwan
| | - Yung-Ping Liu
- Department of Industrial Engineering and Management, Chaoyang University of Technology, Taichung 413310, Taiwan
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 33004, Taiwan; (S.-H.C.); (C.-P.C.); (S.-Y.C.)
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
| | - Yi-Jyun Wang
- Department of Industrial Engineering and Management, Yuan Ze University, Taoyuan 32003, Taiwan; (R.F.L.); (Y.-J.W.)
| | - Shu-Ying Chang
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 33004, Taiwan; (S.-H.C.); (C.-P.C.); (S.-Y.C.)
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12
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Chang PL, Lin CY, Chen CP, Lin YC, Hu HC, Cheng SH, Cheng CY. Clinical validation of an automated reverse transcription-insulated isothermal PCR assay for the detection of severe acute respiratory syndrome coronavirus 2. J Microbiol Immunol Infect 2021; 54:522-526. [PMID: 33582073 PMCID: PMC7849545 DOI: 10.1016/j.jmii.2021.01.005] [Citation(s) in RCA: 5] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 12/27/2022]
Abstract
To determine clinical performance of the single-target SARS-CoV-2 orf 1 ab reverse transcription-insulated isothermal PCR (RT-iiPCR) assay, the positive percentage agreement between this assay and a laboratory real-time RT-PCR assay was 96.8% (30 of 31; 95% confidence interval [CI], 90.5%-100%) and the negative percentage agreement was 97.1% (67 of 69; 95% CI, 93.1%-100%).
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Affiliation(s)
- Pai-Ling Chang
- Department of Laboratory Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.
| | - Chia-Yi Lin
- Department of Laboratory Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; School of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Hui-Chun Hu
- Department of Nursing, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; School of Public Health, National Yang-Ming University, Taipei, Taiwan.
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13
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Axfors C, Schmitt AM, Janiaud P, van’t Hooft J, Abd-Elsalam S, Abdo EF, Abella BS, Akram J, Amaravadi RK, Angus DC, Arabi YM, Azhar S, Baden LR, Baker AW, Belkhir L, Benfield T, Berrevoets MAH, Chen CP, Chen TC, Cheng SH, Cheng CY, Chung WS, Cohen YZ, Cowan LN, Dalgard O, de Almeida e Val FF, de Lacerda MVG, de Melo GC, Derde L, Dubee V, Elfakir A, Gordon AC, Hernandez-Cardenas CM, Hills T, Hoepelman AIM, Huang YW, Igau B, Jin R, Jurado-Camacho F, Khan KS, Kremsner PG, Kreuels B, Kuo CY, Le T, Lin YC, Lin WP, Lin TH, Lyngbakken MN, McArthur C, McVerry BJ, Meza-Meneses P, Monteiro WM, Morpeth SC, Mourad A, Mulligan MJ, Murthy S, Naggie S, Narayanasamy S, Nichol A, Novack LA, O’Brien SM, Okeke NL, Perez L, Perez-Padilla R, Perrin L, Remigio-Luna A, Rivera-Martinez NE, Rockhold FW, Rodriguez-Llamazares S, Rolfe R, Rosa R, Røsjø H, Sampaio VS, Seto TB, Shahzad M, Soliman S, Stout JE, Thirion-Romero I, Troxel AB, Tseng TY, Turner NA, Ulrich RJ, Walsh SR, Webb SA, Weehuizen JM, Velinova M, Wong HL, Wrenn R, Zampieri FG, Zhong W, Moher D, Goodman SN, Ioannidis JPA, Hemkens LG. Author Correction: Mortality outcomes with hydroxychloroquine and chloroquine in COVID-19 from an international collaborative meta-analysis of randomized trials. Nat Commun 2021; 12:3001. [PMID: 33990619 PMCID: PMC8121133 DOI: 10.1038/s41467-021-23559-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Cathrine Axfors
- grid.168010.e0000000419368956Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA USA ,grid.8993.b0000 0004 1936 9457Department for Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - Andreas M. Schmitt
- grid.6612.30000 0004 1937 0642Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland ,grid.6612.30000 0004 1937 0642Department of Medical Oncology, University of Basel, Basel, Switzerland
| | - Perrine Janiaud
- grid.6612.30000 0004 1937 0642Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Janneke van’t Hooft
- grid.168010.e0000000419368956Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA USA ,grid.7177.60000000084992262Amsterdam University Medical Center, Amsterdam University, Amsterdam, the Netherlands
| | - Sherief Abd-Elsalam
- grid.412258.80000 0000 9477 7793Tropical Medicine and Infectious Diseases Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Ehab F. Abdo
- grid.252487.e0000 0000 8632 679XTropical Medicine and Gastroenterology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Benjamin S. Abella
- grid.25879.310000 0004 1936 8972Department of Emergency Medicine, University of Pennsylvania, Philadelphia, PA USA
| | - Javed Akram
- grid.412956.dDepartment of Internal Medicine, Vice Chancellor, University of Health Sciences, Lahore, Punjab Pakistan
| | - Ravi K. Amaravadi
- grid.25879.310000 0004 1936 8972Abramson Cancer Center and Department of Medicine, University of Pennsylvania, Philadelphia, PA USA
| | - Derek C. Angus
- grid.21925.3d0000 0004 1936 9000Department of Critical Care Medicine, The Clinical Research Investigation and Systems Modeling of Acute Illness (CRISMA) Center, University of Pittsburgh, Pittsburgh, PA USA ,grid.21925.3d0000 0004 1936 9000the UPMC Health System Office of Healthcare Innovation, University of Pittsburgh Medical Centre, Pittsburgh, PA USA
| | - Yaseen M. Arabi
- grid.412149.b0000 0004 0608 0662Intensive Care Department, King Saud Bin Abdulaziz University for Health Sciences and King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Shehnoor Azhar
- grid.412956.dDepartment of Public Health, University of Health Sciences, Lahore, Punjab Pakistan
| | - Lindsey R. Baden
- grid.62560.370000 0004 0378 8294Division of Infectious Diseases, Brigham and Women’s Hospital, Boston, MA USA
| | - Arthur W. Baker
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Leila Belkhir
- grid.7942.80000 0001 2294 713XInfectious Diseases Department, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Thomas Benfield
- grid.4973.90000 0004 0646 7373Center of Research & Disruption of Infectious Diseases, Department of Infectious Diseases, Copenhagen University Hospital, Amager and Hvidovre, Hvidovre, Denmark
| | - Marvin A. H. Berrevoets
- grid.416373.4Department of Internal Medicine, Elisabeth-Tweesteden hospital, Tilburg, Netherlands
| | - Cheng-Pin Chen
- grid.454740.6Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Tsung-Chia Chen
- grid.454740.6Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Shu-Hsing Cheng
- grid.454740.6Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Chien-Yu Cheng
- grid.454740.6Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Wei-Sheng Chung
- grid.454740.6Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | | | - Lisa N. Cowan
- grid.417555.70000 0000 8814 392XSanofi, Bridgewater, NJ USA
| | - Olav Dalgard
- grid.411279.80000 0000 9637 455XDepartment of Infectious Diseases, Division of Medicine, Akershus University Hospital, Lørenskog, Norway ,grid.5510.10000 0004 1936 8921Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | - Marcus V. G. de Lacerda
- grid.418153.a0000 0004 0486 0972Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM Brazil ,Instituto Leonidas e Maria Deane – ILMD, FIOCRUZ-AM, Manaus, AM Brazil
| | - Gisely C. de Melo
- grid.418153.a0000 0004 0486 0972Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM Brazil ,grid.412290.c0000 0000 8024 0602Universidade do Estado do Amazonas, Manaus, AM Brazil
| | - Lennie Derde
- grid.7692.a0000000090126352Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands ,grid.7692.a0000000090126352Intensive Care Centre, University Medical Center Utrecht, Utrecht, Netherlands
| | - Vincent Dubee
- grid.411147.60000 0004 0472 0283Infectious and Tropical Diseases Department, Angers University Hospital, Angers, France
| | | | - Anthony C. Gordon
- grid.417895.60000 0001 0693 2181Department of Surgery and Cancer, Anaesthetics, Pain Medicine, and Intensive Care Medicine, Imperial College London and Imperial College Healthcare NHS Trust, London, UK
| | - Carmen M. Hernandez-Cardenas
- grid.419179.30000 0000 8515 3604Critical Care Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Thomas Hills
- grid.415117.70000 0004 0445 6830Medical Research Institute of New Zealand, Wellington, New Zealand ,grid.414055.10000 0000 9027 2851Auckland City Hospital, Auckland, New Zealand
| | - Andy I. M. Hoepelman
- grid.7692.a0000000090126352Department of Infectious Diseases, University Medical Center Utrecht, Utrecht, Netherlands
| | - Yi-Wen Huang
- grid.454740.6Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | - Bruno Igau
- grid.417555.70000 0000 8814 392XSanofi, Bridgewater, NJ USA
| | - Ronghua Jin
- grid.24696.3f0000 0004 0369 153XBeijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Felipe Jurado-Camacho
- grid.419179.30000 0000 8515 3604Critical Care Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Khalid S. Khan
- grid.4489.10000000121678994Department of Preventive Medicine & Public Health, University of Granada, Hospital Real, Avenida del Hospicio, Granada, Granada, Spain
| | - Peter G. Kremsner
- grid.10392.390000 0001 2190 1447Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany ,grid.452268.fCentre de Recherches Médicales de Lambaréné, Lambaréné, Gabon ,grid.452463.2German Center for Infection Research, Partner Site Tübingen, Tübingen, Germany
| | - Benno Kreuels
- grid.13648.380000 0001 2180 3484Department of Medicine, Division of Tropical Medicine and Division of Infectious Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany ,grid.424065.10000 0001 0701 3136Department of Tropical Medicine, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Cheng-Yu Kuo
- grid.454740.6Department of Internal Medicine, Pingtung Hospital, Ministry of Health and Welfare, Pingtung, Taiwan
| | - Thuy Le
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Yi-Chun Lin
- grid.454740.6Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Wu-Pu Lin
- grid.454740.6Department of Internal Medicine, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
| | - Tse-Hung Lin
- grid.454740.6Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | - Magnus Nakrem Lyngbakken
- grid.5510.10000 0004 1936 8921Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway ,grid.411279.80000 0000 9637 455XDivision of Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Colin McArthur
- grid.415117.70000 0004 0445 6830Medical Research Institute of New Zealand, Wellington, New Zealand ,grid.414055.10000 0000 9027 2851Auckland City Hospital, Auckland, New Zealand ,grid.1002.30000 0004 1936 7857School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC Australia
| | - Bryan J. McVerry
- grid.21925.3d0000 0004 1936 9000Department of Medicine, University of Pittsburgh, Pittsburgh, PA USA
| | | | - Wuelton M. Monteiro
- grid.418153.a0000 0004 0486 0972Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM Brazil ,grid.412290.c0000 0000 8024 0602Universidade do Estado do Amazonas, Manaus, AM Brazil
| | - Susan C. Morpeth
- grid.415534.20000 0004 0372 0644Middlemore Hospital, Auckland, New Zealand
| | - Ahmad Mourad
- grid.189509.c0000000100241216Department of Medicine, Duke University Medical Center, Durham, NC 27710 USA
| | - Mark J. Mulligan
- grid.137628.90000 0004 1936 8753Department of Microbiology, NYU Grossman School of Medicine, New York, NY USA ,grid.137628.90000 0004 1936 8753Department of Internal Medicine, Division of Infectious Diseases and Immunology, NYU Grossman School of Medicine, New York, NY USA
| | - Srinivas Murthy
- grid.17091.3e0000 0001 2288 9830University of British Columbia School of Medicine, Vancouver, BC Canada
| | - Susanna Naggie
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Shanti Narayanasamy
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Alistair Nichol
- grid.1002.30000 0004 1936 7857School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC Australia ,grid.267362.40000 0004 0432 5259Department of Intensive Care, Alfred Health, Melbourne, VIC Australia ,grid.412751.40000 0001 0315 8143Department of Anesthesia and Intensive Care, St Vincent’s University Hospital, Dublin, Ireland ,grid.7886.10000 0001 0768 2743School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - Lewis A. Novack
- grid.38142.3c000000041936754XDivision of Infectious Diseases, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA USA
| | - Sean M. O’Brien
- grid.189509.c0000000100241216Department of Biostatistics and Bioinformatics, Duke University Medical Center and Duke Clinical Research Institute, Durham, NC USA
| | - Nwora Lance Okeke
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | | | - Rogelio Perez-Padilla
- grid.419179.30000 0000 8515 3604Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | | | - Arantxa Remigio-Luna
- grid.419179.30000 0000 8515 3604Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | | | - Frank W. Rockhold
- grid.189509.c0000000100241216Department of Biostatistics and Bioinformatics, Duke University Medical Center and Duke Clinical Research Institute, Durham, NC USA
| | - Sebastian Rodriguez-Llamazares
- grid.419179.30000 0000 8515 3604Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Robert Rolfe
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Rossana Rosa
- grid.430652.60000 0004 0396 2096UnityPoint Health, Des Moines, IA USA
| | - Helge Røsjø
- grid.5510.10000 0004 1936 8921Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway ,grid.411279.80000 0000 9637 455XDivision of Research and Innovation, Akershus University Hospital, Lørenskog, Norway
| | - Vanderson S. Sampaio
- grid.418153.a0000 0004 0486 0972Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM Brazil ,Fundação de Vigilância em Saúde do Amazonas, Manaus, AM Brazil
| | - Todd B. Seto
- grid.410445.00000 0001 2188 0957University of Hawaii John A. Burns School of Medicine, Honolulu, HI USA ,grid.415594.8The Queen’s Medical Center, Honolulu, HI USA
| | - Muhammad Shahzad
- grid.412956.dDepartment of Pharmacology, University of Health Sciences, Lahore, Punjab Pakistan
| | - Shaimaa Soliman
- grid.411775.10000 0004 0621 4712Public Health and Community Medicine, Menoufia University, Menoufia, Egypt
| | - Jason E. Stout
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Ireri Thirion-Romero
- grid.419179.30000 0000 8515 3604Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Andrea B. Troxel
- grid.137628.90000 0004 1936 8753Division of Biostatistics, Department of Population Health, NYU Grossman School of Medicine, New York, NY USA
| | - Ting-Yu Tseng
- grid.454740.6Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Nicholas A. Turner
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Robert J. Ulrich
- grid.137628.90000 0004 1936 8753Department of Medicine, Division of Infectious Diseases and Immunology, NYU Grossman School of Medicine, New York, NY USA
| | - Stephen R. Walsh
- grid.62560.370000 0004 0378 8294Division of Infectious Diseases, Brigham and Women’s Hospital, Boston, MA USA
| | - Steve A. Webb
- grid.1002.30000 0004 1936 7857School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC Australia ,grid.460013.0St. John of God Hospital, Subiaco, WA Australia
| | - Jesper M. Weehuizen
- grid.7692.a0000000090126352Department of Infectious Diseases, University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Hon-Lai Wong
- grid.454740.6Department of Internal Medicine, Keelung Hospital, Ministry of Health and Welfare, Keelung, Taiwan
| | - Rebekah Wrenn
- grid.189509.c0000000100241216Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC USA
| | - Fernando G. Zampieri
- grid.477370.00000 0004 0454 243XResearch Institute, HCor-Hospital do Coração, São Paulo, Brazil ,Research Institute, BRICNet - Brazilian Research in Intensive Care Network, São Paulo, Brazil ,IDor Research Institute, São Paulo, Brazil
| | - Wu Zhong
- grid.410740.60000 0004 1803 4911National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing, People’s Republic of China
| | - David Moher
- grid.412687.e0000 0000 9606 5108Centre for Journalology, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON Canada
| | - Steven N. Goodman
- grid.168010.e0000000419368956Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA USA ,grid.168010.e0000000419368956Stanford University School of Medicine, Stanford, CA USA ,grid.168010.e0000000419368956Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA USA
| | - John P. A. Ioannidis
- grid.168010.e0000000419368956Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA USA ,grid.168010.e0000000419368956Stanford University School of Medicine, Stanford, CA USA ,grid.168010.e0000000419368956Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA USA ,grid.168010.e0000000419368956Stanford Prevention Research Center, Department of Medicine, Stanford University, Stanford, CA USA ,grid.484013.aMeta-Research Innovation Center Berlin (METRIC-B), Berlin Institute of Health, Berlin, Germany
| | - Lars G. Hemkens
- grid.168010.e0000000419368956Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA USA ,grid.6612.30000 0004 1937 0642Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland ,grid.484013.aMeta-Research Innovation Center Berlin (METRIC-B), Berlin Institute of Health, Berlin, Germany
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14
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Axfors C, Schmitt AM, Janiaud P, Van't Hooft J, Abd-Elsalam S, Abdo EF, Abella BS, Akram J, Amaravadi RK, Angus DC, Arabi YM, Azhar S, Baden LR, Baker AW, Belkhir L, Benfield T, Berrevoets MAH, Chen CP, Chen TC, Cheng SH, Cheng CY, Chung WS, Cohen YZ, Cowan LN, Dalgard O, de Almeida E Val FF, de Lacerda MVG, de Melo GC, Derde L, Dubee V, Elfakir A, Gordon AC, Hernandez-Cardenas CM, Hills T, Hoepelman AIM, Huang YW, Igau B, Jin R, Jurado-Camacho F, Khan KS, Kremsner PG, Kreuels B, Kuo CY, Le T, Lin YC, Lin WP, Lin TH, Lyngbakken MN, McArthur C, McVerry BJ, Meza-Meneses P, Monteiro WM, Morpeth SC, Mourad A, Mulligan MJ, Murthy S, Naggie S, Narayanasamy S, Nichol A, Novack LA, O'Brien SM, Okeke NL, Perez L, Perez-Padilla R, Perrin L, Remigio-Luna A, Rivera-Martinez NE, Rockhold FW, Rodriguez-Llamazares S, Rolfe R, Rosa R, Røsjø H, Sampaio VS, Seto TB, Shahzad M, Soliman S, Stout JE, Thirion-Romero I, Troxel AB, Tseng TY, Turner NA, Ulrich RJ, Walsh SR, Webb SA, Weehuizen JM, Velinova M, Wong HL, Wrenn R, Zampieri FG, Zhong W, Moher D, Goodman SN, Ioannidis JPA, Hemkens LG. Mortality outcomes with hydroxychloroquine and chloroquine in COVID-19 from an international collaborative meta-analysis of randomized trials. Nat Commun 2021; 12:2349. [PMID: 33859192 PMCID: PMC8050319 DOI: 10.1038/s41467-021-22446-z] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 03/15/2021] [Indexed: 02/06/2023] Open
Abstract
Substantial COVID-19 research investment has been allocated to randomized clinical trials (RCTs) on hydroxychloroquine/chloroquine, which currently face recruitment challenges or early discontinuation. We aim to estimate the effects of hydroxychloroquine and chloroquine on survival in COVID-19 from all currently available RCT evidence, published and unpublished. We present a rapid meta-analysis of ongoing, completed, or discontinued RCTs on hydroxychloroquine or chloroquine treatment for any COVID-19 patients (protocol: https://osf.io/QESV4/ ). We systematically identified unpublished RCTs (ClinicalTrials.gov, WHO International Clinical Trials Registry Platform, Cochrane COVID-registry up to June 11, 2020), and published RCTs (PubMed, medRxiv and bioRxiv up to October 16, 2020). All-cause mortality has been extracted (publications/preprints) or requested from investigators and combined in random-effects meta-analyses, calculating odds ratios (ORs) with 95% confidence intervals (CIs), separately for hydroxychloroquine and chloroquine. Prespecified subgroup analyses include patient setting, diagnostic confirmation, control type, and publication status. Sixty-three trials were potentially eligible. We included 14 unpublished trials (1308 patients) and 14 publications/preprints (9011 patients). Results for hydroxychloroquine are dominated by RECOVERY and WHO SOLIDARITY, two highly pragmatic trials, which employed relatively high doses and included 4716 and 1853 patients, respectively (67% of the total sample size). The combined OR on all-cause mortality for hydroxychloroquine is 1.11 (95% CI: 1.02, 1.20; I² = 0%; 26 trials; 10,012 patients) and for chloroquine 1.77 (95%CI: 0.15, 21.13, I² = 0%; 4 trials; 307 patients). We identified no subgroup effects. We found that treatment with hydroxychloroquine is associated with increased mortality in COVID-19 patients, and there is no benefit of chloroquine. Findings have unclear generalizability to outpatients, children, pregnant women, and people with comorbidities.
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Affiliation(s)
- Cathrine Axfors
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Department for Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Andreas M Schmitt
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Medical Oncology, University of Basel, Basel, Switzerland
| | - Perrine Janiaud
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Janneke Van't Hooft
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Amsterdam University Medical Center, Amsterdam University, Amsterdam, the Netherlands
| | - Sherief Abd-Elsalam
- Tropical Medicine and Infectious Diseases Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Ehab F Abdo
- Tropical Medicine and Gastroenterology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Benjamin S Abella
- Department of Emergency Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Javed Akram
- Department of Internal Medicine, Vice Chancellor, University of Health Sciences, Lahore, Punjab, Pakistan
| | - Ravi K Amaravadi
- Abramson Cancer Center and Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Derek C Angus
- Department of Critical Care Medicine, The Clinical Research Investigation and Systems Modeling of Acute Illness (CRISMA) Center, University of Pittsburgh, Pittsburgh, PA, USA
- the UPMC Health System Office of Healthcare Innovation, University of Pittsburgh Medical Centre, Pittsburgh, PA, USA
| | - Yaseen M Arabi
- Intensive Care Department, King Saud Bin Abdulaziz University for Health Sciences and King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Shehnoor Azhar
- Department of Public Health, University of Health Sciences, Lahore, Punjab, Pakistan
| | - Lindsey R Baden
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA, USA
| | - Arthur W Baker
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Leila Belkhir
- Infectious Diseases Department, Cliniques universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Thomas Benfield
- Center of Research & Disruption of Infectious Diseases, Department of Infectious Diseases, Copenhagen University Hospital, Amager and Hvidovre, Hvidovre, Denmark
| | - Marvin A H Berrevoets
- Department of Internal Medicine, Elisabeth-Tweesteden hospital, Tilburg, Netherlands
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Tsung-Chia Chen
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Wei-Sheng Chung
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | | | | | - Olav Dalgard
- Department of Infectious Diseases, Division of Medicine, Akershus University Hospital, Lørenskog, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | | | - Marcus V G de Lacerda
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Instituto Leonidas e Maria Deane - ILMD, FIOCRUZ-AM, Manaus, AM, Brazil
| | - Gisely C de Melo
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Universidade do Estado do Amazonas, Manaus, AM, Brazil
| | - Lennie Derde
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands
- Intensive Care Centre, University Medical Center Utrecht, Utrecht, Netherlands
| | - Vincent Dubee
- Infectious and Tropical Diseases Department, Angers University Hospital, Angers, France
| | | | - Anthony C Gordon
- Department of Surgery and Cancer, Anaesthetics, Pain Medicine, and Intensive Care Medicine, Imperial College London and Imperial College Healthcare NHS Trust, London, UK
| | - Carmen M Hernandez-Cardenas
- Critical Care Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Thomas Hills
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Auckland City Hospital, Auckland, New Zealand
| | - Andy I M Hoepelman
- Department of Infectious Diseases, University Medical Center Utrecht, Utrecht, Netherlands
| | - Yi-Wen Huang
- Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | | | - Ronghua Jin
- Beijing Youan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Felipe Jurado-Camacho
- Critical Care Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Khalid S Khan
- Department of Preventive Medicine & Public Health, University of Granada, Hospital Real, Avenida del Hospicio, Granada, Granada, Spain
| | - Peter G Kremsner
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
- Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon
- German Center for Infection Research, Partner Site Tübingen, Tübingen, Germany
| | - Benno Kreuels
- Department of Medicine, Division of Tropical Medicine and Division of Infectious Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Tropical Medicine, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Cheng-Yu Kuo
- Department of Internal Medicine, Pingtung Hospital, Ministry of Health and Welfare, Pingtung, Taiwan
| | - Thuy Le
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Wu-Pu Lin
- Department of Internal Medicine, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
| | - Tse-Hung Lin
- Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | - Magnus Nakrem Lyngbakken
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway
| | - Colin McArthur
- Medical Research Institute of New Zealand, Wellington, New Zealand
- Auckland City Hospital, Auckland, New Zealand
- School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Bryan J McVerry
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Wuelton M Monteiro
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Universidade do Estado do Amazonas, Manaus, AM, Brazil
| | | | - Ahmad Mourad
- Department of Medicine, Duke University Medical Center, Durham, NC, 27710, USA
| | - Mark J Mulligan
- Department of Microbiology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Internal Medicine, Division of Infectious Diseases and Immunology, NYU Grossman School of Medicine, New York, NY, USA
| | - Srinivas Murthy
- University of British Columbia School of Medicine, Vancouver, BC, Canada
| | - Susanna Naggie
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Shanti Narayanasamy
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Alistair Nichol
- School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
- Department of Intensive Care, Alfred Health, Melbourne, VIC, Australia
- Department of Anesthesia and Intensive Care, St Vincent's University Hospital, Dublin, Ireland
- School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - Lewis A Novack
- Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sean M O'Brien
- Department of Biostatistics and Bioinformatics, Duke University Medical Center and Duke Clinical Research Institute, Durham, NC, USA
| | - Nwora Lance Okeke
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | | | - Rogelio Perez-Padilla
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | | | - Arantxa Remigio-Luna
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | | | - Frank W Rockhold
- Department of Biostatistics and Bioinformatics, Duke University Medical Center and Duke Clinical Research Institute, Durham, NC, USA
| | - Sebastian Rodriguez-Llamazares
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Robert Rolfe
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | | | - Helge Røsjø
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Division of Research and Innovation, Akershus University Hospital, Lørenskog, Norway
| | - Vanderson S Sampaio
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brazil
- Fundação de Vigilância em Saúde do Amazonas, Manaus, AM, Brazil
| | - Todd B Seto
- University of Hawaii John A. Burns School of Medicine, Honolulu, HI, USA
- The Queen's Medical Center, Honolulu, HI, USA
| | - Muhammad Shahzad
- Department of Pharmacology, University of Health Sciences, Lahore, Punjab, Pakistan
| | - Shaimaa Soliman
- Public Health and Community Medicine, Menoufia University, Menoufia, Egypt
| | - Jason E Stout
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Ireri Thirion-Romero
- Department of Smoking and COPD, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Ciudad de México, Mexico
| | - Andrea B Troxel
- Division of Biostatistics, Department of Population Health, NYU Grossman School of Medicine, New York, NY, USA
| | - Ting-Yu Tseng
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Nicholas A Turner
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Robert J Ulrich
- Department of Medicine, Division of Infectious Diseases and Immunology, NYU Grossman School of Medicine, New York, NY, USA
| | - Stephen R Walsh
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA, USA
| | - Steve A Webb
- School of Epidemiology and Preventive Medicine, Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
- St. John of God Hospital, Subiaco, WA, Australia
| | - Jesper M Weehuizen
- Department of Infectious Diseases, University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Hon-Lai Wong
- Department of Internal Medicine, Keelung Hospital, Ministry of Health and Welfare, Keelung, Taiwan
| | - Rebekah Wrenn
- Department of Medicine, Division of Infectious Diseases and International Health, Duke University Medical Center, Durham, NC, USA
| | - Fernando G Zampieri
- Research Institute, HCor-Hospital do Coração, São Paulo, Brazil
- Research Institute, BRICNet - Brazilian Research in Intensive Care Network, São Paulo, Brazil
- IDor Research Institute, São Paulo, Brazil
| | - Wu Zhong
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing, People's Republic of China
| | - David Moher
- Centre for Journalology, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Steven N Goodman
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Stanford University School of Medicine, Stanford, CA, USA
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA
| | - John P A Ioannidis
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA
- Stanford University School of Medicine, Stanford, CA, USA
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Prevention Research Center, Department of Medicine, Stanford University, Stanford, CA, USA
- Meta-Research Innovation Center Berlin (METRIC-B), Berlin Institute of Health, Berlin, Germany
| | - Lars G Hemkens
- Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA.
- Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland.
- Meta-Research Innovation Center Berlin (METRIC-B), Berlin Institute of Health, Berlin, Germany.
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15
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Lin YC, Lee YL, Cheng CY, Tseng WP, Wu JL, Lin CH, Chung MY, Kang CM, Lee YF, Chen CP, Huang CH, Liu CE, Cheng SH, Chen SC, Chen SY, Hsueh PR. Multicenter evaluation of four immunoassays for the performance of early diagnosis of COVID-19 and assessment of antibody responses of patients with pneumonia in Taiwan. J Microbiol Immunol Infect 2021; 54:816-829. [PMID: 33676864 PMCID: PMC7900773 DOI: 10.1016/j.jmii.2021.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/05/2021] [Accepted: 02/05/2021] [Indexed: 01/08/2023]
Abstract
Background/purpose Our study goals were to evaluate the diagnostic performance of four anti-SARS-CoV-2 antibodies tests and the differences in dynamic immune responses between COVID-19 patients with and without pneumonia. Methods We collected 184 serum samples from 70 consecutively qRT-PCR-confirmed COVID-19 patients at four participating hospitals from 23 January 2020 to 30 September 2020. COVID-19 pneumonia was defined as the presence of new pulmonary infiltration. Serum samples were grouped by the duration after symptom onset on a weekly basis for antibody testing and analysis. The four immunoassays: Beckman SARS-CoV-2 IgG/IgM (Beckman Test), Siemens (ADVIA Centaur®) SARS-CoV-2 Total (COV2T) (Siemens Test), SBC COVID-19 IgG ELISA (SBC Test) and EliA SARS-CoV-2-Sp1 IgG/IgM/IgA P2 Research (EliA Test) were used for detecting the SARS-CoV-2 specific antibodies. Results The sensitivity of all tests reached 100% after 42 days of symptom onset. Siemens Test, the only test detecting total anti-SARS-CoV-2 antibodies, had the best performance in the early diagnosis of COVID-19 infection (day 0–7: 77%; day 8–14: 95%) compared to the other 3 serological tests. All tests showed 100% specificity except SBC Test (98%). COVID-19 patients with pneumonia had significantly higher testing signal values than patients without pneumonia (all p values < 0.05, except EliA IgM Test). However, Siemens Test and SBC Test had highest probability in early prediction of the presence of COVID-19 pneumonia. Conclusion Chronological analysis of immune response among COVID-19 patients with different serological tests provides important information in the early diagnosis of SARS-CoV-2 infection and prediction of the risk of pneumonia after infection.
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Affiliation(s)
- Yi-Chun Lin
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Yu-Lin Lee
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Chien-Yu Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Wen-Pin Tseng
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jhong-Lin Wu
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chien-Hao Lin
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ming-Yi Chung
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chun-Min Kang
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ya-Fan Lee
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Cheng-Pin Chen
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Chien-Hua Huang
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chun-Eng Liu
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Shu-Hsing Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.
| | - Shyr-Chyr Chen
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shey-Ying Chen
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Center for Quality Management, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Po-Ren Hsueh
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.
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16
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Huang KYA, Tan TK, Chen TH, Huang CG, Harvey R, Hussain S, Chen CP, Harding A, Gilbert-Jaramillo J, Liu X, Knight M, Schimanski L, Shih SR, Lin YC, Cheng CY, Cheng SH, Huang YC, Lin TY, Jan JT, Ma C, James W, Daniels RS, McCauley JW, Rijal P, Townsend AR. Breadth and function of antibody response to acute SARS-CoV-2 infection in humans. PLoS Pathog 2021; 17:e1009352. [PMID: 33635919 PMCID: PMC8130932 DOI: 10.1371/journal.ppat.1009352] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 05/18/2021] [Accepted: 02/02/2021] [Indexed: 12/31/2022] Open
Abstract
Serological and plasmablast responses and plasmablast-derived IgG monoclonal antibodies (MAbs) have been analysed in three COVID-19 patients with different clinical severities. Potent humoral responses were detected within 3 weeks of onset of illness in all patients and the serological titre was elicited soon after or concomitantly with peripheral plasmablast response. An average of 13.7% and 3.5% of plasmablast-derived MAbs were reactive with virus spike glycoprotein or nucleocapsid, respectively. A subset of anti-spike (10 of 32) antibodies cross-reacted with other betacoronaviruses tested and harboured extensive somatic mutations, indicative of an expansion of memory B cells upon SARS-CoV-2 infection. Fourteen of 32 anti-spike MAbs, including five anti-receptor-binding domain (RBD), three anti-non-RBD S1 and six anti-S2, neutralised wild-type SARS-CoV-2 in independent assays. Anti-RBD MAbs were further grouped into four cross-inhibiting clusters, of which six antibodies from three separate clusters blocked the binding of RBD to ACE2 and five were neutralising. All ACE2-blocking anti-RBD antibodies were isolated from two recovered patients with prolonged fever, which is compatible with substantial ACE2-blocking response in their sera. Finally, the identification of non-competing pairs of neutralising antibodies would offer potential templates for the development of prophylactic and therapeutic agents against SARS-CoV-2.
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Affiliation(s)
- Kuan-Ying A. Huang
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Ting-Hua Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chung-Guei Huang
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ruth Harvey
- Worldwide Influenza Centre, The Francis Crick Institute, 1 Midland Road, London, United Kingdom
| | - Saira Hussain
- Worldwide Influenza Centre, The Francis Crick Institute, 1 Midland Road, London, United Kingdom
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and National Yang-Ming University, Taipei, Taiwan
| | - Adam Harding
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | | | - Xu Liu
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Michael Knight
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Lisa Schimanski
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, United Kingdom
| | - Shin-Ru Shih
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and National Yang-Ming University, Taipei, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and Taipei Medical University, Taipei, Taiwan
| | - Yhu-Chering Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tzou-Yien Lin
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Jia-Tsrong Jan
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Che Ma
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - William James
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Rodney S. Daniels
- Worldwide Influenza Centre, The Francis Crick Institute, 1 Midland Road, London, United Kingdom
| | - John W. McCauley
- Worldwide Influenza Centre, The Francis Crick Institute, 1 Midland Road, London, United Kingdom
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, United Kingdom
| | - Alain R. Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, United Kingdom
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17
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Chen CP, Lin YC, Chen TC, Tseng TY, Wong HL, Kuo CY, Lin WP, Huang SR, Wang WY, Liao JH, Liao CS, Hung YP, Lin TH, Chang TY, Hsiao CF, Huang YW, Chung WS, Cheng CY, Cheng SH. A multicenter, randomized, open-label, controlled trial to evaluate the efficacy and tolerability of hydroxychloroquine and a retrospective study in adult patients with mild to moderate coronavirus disease 2019 (COVID-19). PLoS One 2020; 15:e0242763. [PMID: 33264337 PMCID: PMC7710068 DOI: 10.1371/journal.pone.0242763] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 11/09/2020] [Indexed: 12/23/2022] Open
Abstract
Objective In this study, we evaluated the efficacy of hydroxychloroquine (HCQ) against coronavirus disease 2019 (COVID-19) via a randomized controlled trial (RCT) and a retrospective study. Methods Subjects admitted to 11 designated public hospitals in Taiwan between April 1 and May 31, 2020, with COVID-19 diagnosis confirmed by pharyngeal real-time RT-PCR for SARS-CoV-2, were randomized at a 2:1 ratio and stratified by mild or moderate illness. HCQ (400 mg twice for 1 d or HCQ 200 mg twice daily for 6 days) was administered. Both the study and control group received standard of care (SOC). Pharyngeal swabs and sputum were collected every other day. The proportion and time to negative viral PCR were assessed on day 14. In the retrospective study, medical records were reviewed for patients admitted before March 31, 2020. Results There were 33 and 37 cases in the RCT and retrospective study, respectively. In the RCT, the median times to negative rRT-PCR from randomization to hospital day 14 were 5 days (95% CI; 1, 9 days) and 10 days (95% CI; 2, 12 days) for the HCQ and SOC groups, respectively (p = 0.40). On day 14, 81.0% (17/21) and 75.0% (9/12) of the subjects in the HCQ and SOC groups, respectively, had undetected virus (p = 0.36). In the retrospective study, 12 (42.9%) in the HCQ group and 5 (55.6%) in the control group had negative rRT-PCR results on hospital day 14 (p = 0.70). Conclusions Neither study demonstrated that HCQ shortened viral shedding in mild to moderate COVID-19 subjects.
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Affiliation(s)
- Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
- Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei, Taiwan
| | - Tsung-Chia Chen
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Ting-Yu Tseng
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Hon-Lai Wong
- Department of Internal Medicine, Keelung Hospital, Ministry of Health and Welfare, Keelung City, Taiwan
| | - Cheng-Yu Kuo
- Department of Internal Medicine, Pingtung Hospital, Ministry of Health and Welfare, Pingtung, Taiwan
| | - Wu-Pu Lin
- Department of Internal Medicine, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
| | - Sz-Rung Huang
- Department of Internal Medicine, Miaoli General Hospital, Ministry of Health and Welfare, Miaoli, Taiwan
| | - Wei-Yao Wang
- Department of Internal Medicine, Feng Yuan Hospital, Ministry of Health and Welfare, Taichung, Taiwan
| | - Jia-Hung Liao
- Department of Internal Medicine, Nantou Hospital, Ministry of Health and Welfare, Nantou, Taiwan
| | - Chung-Shin Liao
- Department of Internal Medicine, Chia Yi Hospital, Ministry of Health and Welfare, Chiayi, Taiwan
| | - Yuan-Pin Hung
- Department of Internal Medicine, Tainan Hospital, Ministry of Health and Welfare, Tainan City, Taiwan
| | - Tse-Hung Lin
- Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | - Tz-Yan Chang
- Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
| | - Chin-Fu Hsiao
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan
| | - Yi-Wen Huang
- Department of Internal Medicine, Chang Hua Hospital, Ministry of Health and Welfare, Changhua, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Wei-Sheng Chung
- Department of Internal Medicine, Taichung Hospital, Ministry of Health and Welfare, Taichung, Taiwan
- Department of Health Service Administration, China Medical University, Taichung, Taiwan
- Department of Healthcare Administration, Central Taiwan University of Science and Technology, Taichung, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
- School of Public Health, National Yang-Ming University, Taipei, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
- School of Public Health, Taipei Medical University, Taipei, Taiwan
- * E-mail:
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18
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Huang CH, Chen CP, Huang YY, Hsu BRS. Modifiable factors related to 7-year renal outcomes in subjects with type 2 diabetes and chronic kidney disease stage 3. J Postgrad Med 2020; 66:187-193. [PMID: 33037171 PMCID: PMC7819377 DOI: 10.4103/jpgm.jpgm_680_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background and Aims Subjects with diabetes are prone to a rapid decline in renal function and major adverse cardiovascular events when they reach chronic kidney disease (CKD) stage 3. This study aimed to identify modifiable risk factors associated with the progression of CKD in this population. Settings and Design An observational cohort study. Methods and Materials A total of 320 type 2 diabetic patients with CKD stage 3 registered in the shared-care-system in our hospital in 2010 were regularly followed up for 7 years. Demographic, laboratory, medication, and fundus examination data of these subjects were collected and analyzed. Statistical Analysis Used Cox regression was used to identify factors associated with changes in CKD stage. Results During the 7-year follow-up period, 204 cases (63.7%) remained at CKD stage 3 while 79 cases (24.7%) progressed to stage 4 or 5 and 37 cases (11.6%) improved to stage 1 or 2. The change in estimated glomerular filtration rate (eGFR) in the first 2 years and variations in glycated hemoglobin (HbA1c) over 7 years were independent factors of both progression (hazard ratio (HR) 1.098 and 1.710, respectively) and improvement (HR 0.919 and 0.231, respectively) of CKD stage. Variations in systolic blood pressure (SBP) was also found as an independent factor for progression of renal function (HR 1.052). Conclusions Our results demonstrated that fluctuations in HbA1c and SBP, and changes in eGFR during the first 2 years of treatment were associated with the long-term renal outcomes in type 2 diabetic patients with CKD stage 3.
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Affiliation(s)
- C H Huang
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taiwan
| | - C P Chen
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taiwan
| | - Y Y Huang
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taiwan
| | - B R S Hsu
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital at Linkou, Taiwan
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19
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Chen SY, Lee YL, Lin YC, Lee NY, Liao CH, Hung YP, Lu MC, Wu JL, Tseng WP, Lin CH, Chung MY, Kang CM, Lee YF, Lee TF, Cheng CY, Chen CP, Huang CH, Liu CE, Cheng SH, Ko WC, Hsueh PR, Chen SC. Multicenter evaluation of two chemiluminescence and three lateral flow immunoassays for the diagnosis of COVID-19 and assessment of antibody dynamic responses to SARS-CoV-2 in Taiwan. Emerg Microbes Infect 2020; 9:2157-2168. [PMID: 32940547 PMCID: PMC7580576 DOI: 10.1080/22221751.2020.1825016] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This multicenter, retrospective study included 346 serum samples from 74 patients with coronavirus disease 2019 (COVID-19) and 194 serum samples from non-COVID-19 patients to evaluate the performance of five anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibody tests, i.e. two chemiluminescence immunoassays (CLIAs): Roche Elecsys® Anti-SARS-CoV-2 Test (Roche Test) and Abbott SARS-CoV-2 IgG (Abbott Test), and three lateral flow immunoassays (LFIAs): Wondfo SARS-CoV-2 Antibody Test (Wondfo Test), ASK COVID-19 IgG/IgM Rapid Test (ASK Test), and Dynamiker 2019-nCoV IgG/IgM Rapid Test (Dynamiker Test). We found high diagnostic sensitivities (%, 95% confidence interval [CI]) for the Roche Test (97.4%, 93.4–99.0%), Abbott Test (94.0%, 89.1–96.8%), Wondfo Test (91.4%, 85.8–94.9%), ASK Test (97.4%, 93.4–99.0%), and Dynamiker Test (90.1%, 84.3–94.0%) after >21 days of symptom onset. Meanwhile, the diagnostic specificity was 99.0% (95% CI, 96.3–99.7%) for the Roche Test, 97.9% (95% CI, 94.8–99.2%) for the Abbott Test, and 100.0% (95% CI, 98.1–100.0%) for the three LFIAs. Cross-reactivity was observed in sera containing anti-cytomegalovirus (CMV) IgG/IgM antibodies and autoantibodies. No difference was observed in the time to seroconversion detection of the five serological tests. Specimens from patients with COVID-19 pneumonia demonstrated a shorter seroconversion time and higher chemiluminescent signal than those without pneumonia. Our data suggested that understanding the dynamic antibody response after COVID-19 infection and performance characteristics of different serological test are crucial for the appropriate interpretation of serological test result for the diagnosis and risk assessment of patient with COVID-19 infection.
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Affiliation(s)
- Shey-Ying Chen
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.,Center for Quality Management, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Lin Lee
- Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Yi-Chun Lin
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Nan-Yao Lee
- Department of Internal Medicine and Center for Infection Control, College of Medicine, National Cheng Kung University Hospital, Tainan, Taiwan.,Department of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Hung Liao
- Division of Infectious Diseases, Department of Internal Medicine, Ministry of Health and Welfare Nantou Hospital, Nantou, Taiwan
| | - Yuan-Pin Hung
- Department of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Internal Medicine, Tainan Hospital, Ministry of Health & Welfare, Tainan, Taiwan.,Graduate Institute of Clinical Medicine, National Health Research Institutes, Tainan, Taiwan
| | - Min-Chi Lu
- Division of Infectious Diseases, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,Department of Microbiology and Immunology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Jhong-Lin Wu
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wen-Pin Tseng
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chien-Hao Lin
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ming-Yi Chung
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chun-Min Kang
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan
| | - Ya-Fan Lee
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Tai-Fen Lee
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chien-Yu Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.,School of Public Health, National Yang-Ming University, Taipei, Taiwan
| | - Cheng-Pin Chen
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chien-Hua Huang
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chun-Eng Liu
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Shu-Hsing Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.,School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Wen-Chien Ko
- Department of Internal Medicine and Center for Infection Control, College of Medicine, National Cheng Kung University Hospital, Tainan, Taiwan.,Department of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Po-Ren Hsueh
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shyr-Chyr Chen
- Department of Emergency Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
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20
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Zhou D, Duyvesteyn HME, Chen CP, Huang CG, Chen TH, Shih SR, Lin YC, Cheng CY, Cheng SH, Huang YC, Lin TY, Ma C, Huo J, Carrique L, Malinauskas T, Ruza RR, Shah PNM, Tan TK, Rijal P, Donat RF, Godwin K, Buttigieg KR, Tree JA, Radecke J, Paterson NG, Supasa P, Mongkolsapaya J, Screaton GR, Carroll MW, Gilbert-Jaramillo J, Knight ML, James W, Owens RJ, Naismith JH, Townsend AR, Fry EE, Zhao Y, Ren J, Stuart DI, Huang KYA. Structural basis for the neutralization of SARS-CoV-2 by an antibody from a convalescent patient. Nat Struct Mol Biol 2020; 27:950-958. [PMID: 32737466 DOI: 10.1038/s41594-020-0480-y] [Citation(s) in RCA: 217] [Impact Index Per Article: 54.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 07/10/2020] [Indexed: 12/28/2022]
Abstract
The COVID-19 pandemic has had an unprecedented health and economic impact and there are currently no approved therapies. We have isolated an antibody, EY6A, from an individual convalescing from COVID-19 and have shown that it neutralizes SARS-CoV-2 and cross-reacts with SARS-CoV-1. EY6A Fab binds the receptor binding domain (RBD) of the viral spike glycoprotein tightly (KD of 2 nM), and a 2.6-Å-resolution crystal structure of an RBD-EY6A Fab complex identifies the highly conserved epitope, away from the ACE2 receptor binding site. Residues within this footprint are key to stabilizing the pre-fusion spike. Cryo-EM analyses of the pre-fusion spike incubated with EY6A Fab reveal a complex of the intact spike trimer with three Fabs bound and two further multimeric forms comprising the destabilized spike attached to Fab. EY6A binds what is probably a major neutralizing epitope, making it a candidate therapeutic for COVID-19.
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Affiliation(s)
- Daming Zhou
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Helen M E Duyvesteyn
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Cheng-Pin Chen
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and National Yang-Ming University, Taipei, Taiwan
| | - Chung-Guei Huang
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ting-Hua Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Shin-Ru Shih
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yi-Chun Lin
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and National Yang-Ming University, Taipei, Taiwan
| | - Shu-Hsing Cheng
- Department of Infectious Diseases, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, and Taipei Medical University, Taipei, Taiwan
| | - Yhu-Chering Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tzou-Yien Lin
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Che Ma
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Jiandong Huo
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- The Rosalind Franklin Institute, Harwell Campus, Didcot, UK
- Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Loic Carrique
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tomas Malinauskas
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Reinis R Ruza
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Pranav N M Shah
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Pramila Rijal
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Robert F Donat
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Kerry Godwin
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Karen R Buttigieg
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Julia A Tree
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
| | - Julika Radecke
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Neil G Paterson
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK
| | - Piyada Supasa
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Juthathip Mongkolsapaya
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Dengue Hemorrhagic Fever Research Unit, Office for Research and Development, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Gavin R Screaton
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Miles W Carroll
- National Infection Service, Public Health England, Porton Down, Salisbury, UK
- Nuffield Department of Medicine, Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | | | - Michael L Knight
- William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - William James
- William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Raymond J Owens
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- The Rosalind Franklin Institute, Harwell Campus, Didcot, UK
- Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - James H Naismith
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
- The Rosalind Franklin Institute, Harwell Campus, Didcot, UK
- Protein Production UK, Research Complex at Harwell, Harwell Science & Innovation Campus, Didcot, UK
| | - Alain R Townsend
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
| | - Elizabeth E Fry
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Yuguang Zhao
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - Jingshan Ren
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK
| | - David I Stuart
- Division of Structural Biology, Nuffield Department of Medicine, University of Oxford, The Wellcome Centre for Human Genetics, Headington, Oxford, UK.
- Centre for Translational Immunology, Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK.
- Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, UK.
| | - Kuan-Ying A Huang
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
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21
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Axfors C, Schmitt AM, Janiaud P, van ’t Hooft J, Abd-elsalam S, Abdo EF, Abella BS, Akram J, Amaravadi RK, Angus DC, Arabi YM, Azhar S, Baden LR, Baker AW, Belkhir L, Benfield T, Berrevoets MA, Chen C, Chen T, Cheng S, Cheng C, Chung W, Cohen YZ, Cowan LN, Dalgard O, de Almeida e Val FF, de Lacerda MV, de Melo GC, Derde L, Dubee V, Elfakir A, Gordon AC, Hernandez-cardenas CM, Hills T, Hoepelman AI, Huang Y, Igau B, Jin R, Jurado-camacho F, Khan KS, Kremsner PG, Kreuels B, Kuo C, Le T, Lin Y, Lin W, Lin T, Lyngbakken MN, Mcarthur C, Mcverry BJ, Meza-meneses P, Monteiro WM, Morpeth SC, Mourad A, Mulligan MJ, Murthy S, Naggie S, Narayanasamy S, Nichol A, Novack LA, O’brien SM, Okeke NL, Perez L, Perez-padilla R, Perrin L, Remigio-luna A, Rivera-martinez NE, Rockhold FW, Rodriguez-llamazares S, Rolfe R, Rosa R, Røsjø H, Sampaio VS, Seto TB, Shehzad M, Soliman S, Stout JE, Thirion-romero I, Troxel AB, Tseng T, Turner NA, Ulrich RJ, Walsh SR, Webb SA, Weehuizen JM, Velinova M, Wong H, Wrenn R, Zampieri FG, Zhong W, Moher D, Goodman SN, Ioannidis JP, Hemkens LG. Mortality outcomes with hydroxychloroquine and chloroquine in COVID-19: an international collaborative meta-analysis of randomized trials.. [DOI: 10.1101/2020.09.16.20194571] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
AbstractBackgroundSubstantial COVID-19 research investment has been allocated to randomized clinical trials (RCTs) on hydroxychloroquine/chloroquine, which currently face recruitment challenges or early discontinuation. We aimed to estimate the effects of hydroxychloroquine and chloroquine on survival in COVID-19 from all currently available RCT evidence, published and unpublished. Methods: Rapid meta-analysis of ongoing, completed, or discontinued RCTs on hydroxychloroquine or chloroquine treatment for any COVID-19 patients (protocol: https://osf.io/QESV4/). We systematically identified published and unpublished RCTs by September 14, 2020 (ClinicalTrials.gov, WHO International Clinical Trials Registry Platform, PubMed, Cochrane COVID-19 registry). All-cause mortality was extracted (publications/preprints) or requested from investigators and combined in random-effects meta-analyses, calculating odds ratios (ORs) with 95% confidence intervals (CIs), separately for hydroxychloroquine/chloroquine. Prespecified subgroup analyses included patient setting, diagnostic confirmation, control type, and publication status.ResultsSixty-two trials were potentially eligible. We included 16 unpublished trials (1596 patients) and 10 publications/preprints (6317 patients). The combined summary OR on all-cause mortality for hydroxychloroquine was 1.08 (95%CI: 0.99, 1.18; I2=0%; 24 trials; 7659 patients) and for chloroquine 1.77 (95%CI: 0.15, 21.13, I2=0%; 4 trials; 307 patients). We identified no subgroup effects.ConclusionsWe found no benefit of hydroxychloroquine or chloroquine on the survival of COVID-19 patients. For hydroxychloroquine, the confidence interval is compatible with increased mortality (OR 1.18) or negligibly reduced mortality (OR 0.99). Findings have unclear generalizability to outpatients, children, pregnant women, and people with comorbidities.
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22
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Dubucs C, Chassaing N, Sergi C, Aubert-Mucca M, Attié-Bitach T, Lacombe D, Thauvin-Robinet C, Arpin S, Perez MJ, Cabrol C, Chen CP, Aziza J, Colin E, Martinovic J, Calvas P, Plaisancié J. Re-focusing on Agnathia-Otocephaly complex. Clin Oral Investig 2020; 25:1353-1362. [PMID: 32643087 DOI: 10.1007/s00784-020-03443-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 07/03/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Agnathia-otocephaly complex is a rare condition characterized by mandibular hypoplasia or agnathia, ear anomalies (melotia/synotia) and microstomia with aglossia. This severe anomaly of the first branchial arch is most often lethal. The estimated incidence is less than 1 in 70.000 births, with etiologies linked to both genetic and teratogenic factors. Most of the cases are sporadic. To date, two genes have been described in humans to be involved in this condition: OTX2 and PRRX1. Nevertheless, the overall proportion of mutated cases is unknown and a significant number of patients remain without molecular diagnosis. Thus, the involvement of other genes than OTX2 and PRRX1 in the agnathia-otocephaly complex is not unlikely. Heterozygous mutations in Cnbp in mice are responsible for mandibular and eye defects mimicking the agnathia-otocephaly complex in humans and appear as a good candidate. Therefore, in this study, we aimed (i) to collect patients presenting with agnathia-otocephaly complex for screening CNBP, in parallel with OTX2 and PRRX1, to check its possible implication in the human phenotype and (ii) to compare our results with the literature data to estimate the proportion of mutated cases after genetic testing. MATERIALS AND METHODS In this work, we describe 10 patients suffering from the agnathia-otocephaly complex. All of them benefited from array-CGH and Sanger sequencing of OTX2, PRRX1 and CNBP. A complete review of the literature was made using the Pubmed database to collect all the patients described with a phenotype of agnathia-otocephaly complex during the 20 last years (1998-2019) in order (i) to study etiology (genetic causes, iatrogenic causes…) and (ii), when genetic testing was performed, to study which genes were tested and by which type of technologies. RESULTS In our 10 patients' cohort, no point mutation in the three tested genes was detected by Sanger sequencing, while array-CGH has allowed identifying a 107-kb deletion encompassing OTX2 responsible for the agnathia-otocephaly complex phenotype in 1 of them. In 4 of the 70 cases described in the literature, a toxic cause was identified and 22 out the 66 remaining cases benefited from genetic testing. Among those 22 patients, 6 were carrying mutation or deletion in the OTX2 gene and 4 in the PRRX1 gene. Thus, when compiling results from our cohort and the literature, a total of 32 patients benefited from genetic testing, with only 34% (11/32) of patients having a mutation in one of the two known genes, OTX2 or PRRX1. CONCLUSIONS From our work and the literature review, only mutations in OTX2 and PRRX1 have been found to date in patients, explaining around one third of the etiologies after genetic testing. Thus, agnathia-otocephaly complex remains unexplained in the majority of the patients, which indicates that other factors might be involved. Although involved in first branchial arch defects, no mutation in the CNBP gene was found in this study. This suggests that mutations in CNBP might not be involved in such phenotype in humans or that, unlike in mice, a compensatory effect might exist in humans. Nevertheless, given that agnathia-otocephaly complex is a rare phenotype, more patients have to be screened for CNBP mutations before we definitively conclude about its potential implication. Therefore, this work presents the current state of knowledge on agnathia-otocephaly complex and underlines the need to expand further the understanding of the genetic bases of this disorder, which remains largely unknown. CLINICAL RELEVANCE We made here an update and focus on the clinical and genetic aspects of agnathia-otocephaly complex as well as a more general review of craniofacial development.
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Affiliation(s)
- C Dubucs
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, Toulouse, France.,Département d'Anatomie et de Cytologie Pathologiques, Institut Universitaire du cancer de Toulouse, Toulouse, France
| | - N Chassaing
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, Toulouse, France.,INSERM U1056, Université Toulouse III, Toulouse, France
| | - C Sergi
- Department of Lab. Med. & Pathology (5B4.09), University of Alberta, Edmonton, AB, Canada
| | - M Aubert-Mucca
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, Toulouse, France
| | - T Attié-Bitach
- Unité d'Embryofœtopathologie, Service d'Histologie Embryologie Cytogénétique, Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris (APHP), Paris, France.,Institut Imagine, INSERM U1163, Université Paris Descartes, Sorbonne Paris Cite, Paris, France
| | - D Lacombe
- Service de Génétique Médicale, CRMR, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Université de Bordeaux, 33076, Bordeaux, France
| | - C Thauvin-Robinet
- UMR1231 GAD, Inserm - Université Bourgogne-Franche Comté, Dijon, France.,Unité Fonctionnelle Innovation en Diagnostic génomique des maladies rares, FHU-TRANSLAD, CHU Dijon, Dijon, Bourgogne, France.,Centre de Référence maladies rares "Anomalies du Développement et syndromes malformatifs," Centre de Génétique, FHU-TRANSLAD, CHU Dijon Bourgogne, Dijon, France
| | - S Arpin
- Service de Génétique Clinique, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - M J Perez
- Department of Medical Genetics, Reference Center for Developmental Abnormalities and Constitutional Bone Diseases, CHRU, Montpellier, France
| | - C Cabrol
- Centre de Génétique Humaine, Centre Hospitalier Universitaire, Université de Franche-Comté, Besançon, France
| | - C P Chen
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - J Aziza
- Département d'Anatomie et de Cytologie Pathologiques, Institut Universitaire du cancer de Toulouse, Toulouse, France
| | - E Colin
- Department de Biochimie et Génétique, Centre Hospitalier Universitaire, Angers, France.,UMR CNRS 6214-INSERM 1083 and PREMMI, Université d'Angers, Angers, France
| | - J Martinovic
- Unit of Fetal Pathology, AP-HP Antoine Béclère Hospital, Clamart, France
| | - P Calvas
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, Toulouse, France.,INSERM U1056, Université Toulouse III, Toulouse, France
| | - Julie Plaisancié
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, Toulouse, France. .,INSERM U1056, Université Toulouse III, Toulouse, France.
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23
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Abstract
Clefting of the secondary palate is one of the most common congenital anomalies, and the multiple corrective surgeries that individuals with isolated cleft palate undergo are associated with major costs and morbidities. Secondary palate development is a complex, multistep process that includes the elevation of the palatal shelves from a vertical to horizontal position, a process that is not well understood. The Hippo signaling cascade is a mechanosensory pathway that regulates morphogenesis, homeostasis, and regeneration by controlling cell proliferation, apoptosis, and differentiation, primarily via negative regulation of the downstream effectors, Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ). We deleted Yap/Taz throughout the palatal shelf mesenchyme as well as specifically in the posterior palatal shelf mesenchyme, using the Osr2Cre and Col2Cre drivers, respectively, which resulted in palatal shelf elevation delay and clefting of the secondary palate. In addition, the deletion resulted in undersized bones of the secondary palate. We next determined downstream targets of YAP/TAZ in the posterior palatal shelves, which included Ibsp and Phex, genes involved in mineralization, and Loxl4, which encodes a lysyl oxidase that catalyzes collagen crosslinking. Ibsp, Phex, and Loxl4 were expressed at decreased levels in the ossification region in the posterior palatal shelf mesenchyme upon deletion of Yap/Taz. Furthermore, collagen levels were decreased specifically in the same region prior to elevation. Thus, our data suggest that YAP/TAZ may regulate collagen crosslinking in the palatal shelf mesenchyme, thus controlling palatal shelf elevation, as well as mineralization of the bones of the secondary palate.
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Affiliation(s)
- A F Goodwin
- Department of Orofacial Sciences, University of California, San Francisco, CA, USA.,Program in Craniofacial Biology, University of California, San Francisco, CA, USA
| | - C P Chen
- Department of Orofacial Sciences, University of California, San Francisco, CA, USA.,Program in Craniofacial Biology, University of California, San Francisco, CA, USA
| | - N T Vo
- Department of Orofacial Sciences, University of California, San Francisco, CA, USA.,Program in Craniofacial Biology, University of California, San Francisco, CA, USA
| | - J O Bush
- Program in Craniofacial Biology, University of California, San Francisco, CA, USA.,Department of Cell and Tissue Biology, University of California, San Francisco, CA, USA.,Institute of Human Genetics, University of California, San Francisco, CA, USA
| | - O D Klein
- Department of Orofacial Sciences, University of California, San Francisco, CA, USA.,Program in Craniofacial Biology, University of California, San Francisco, CA, USA.,Institute of Human Genetics, University of California, San Francisco, CA, USA.,Department of Pediatrics, University of California, San Francisco, CA, USA
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24
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Lin YC, Cheng CY, Chen CP, Cheng SH, Chang SY, Hsueh PR. A case of transient existence of SARS-CoV-2 RNA in the respiratory tract with the absence of anti-SARS-CoV-2 antibody response. Int J Infect Dis 2020; 96:464-466. [PMID: 32470604 PMCID: PMC7250069 DOI: 10.1016/j.ijid.2020.05.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/13/2020] [Accepted: 05/20/2020] [Indexed: 01/08/2023] Open
Abstract
We report a case of transient existence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in the respiratory tract with the absence of an anti-SARS-CoV-2 antibody response. SARS-CoV-2 RNA was absent in the six respiratory specimens that were subsequently tested. Anti-SARS-CoV-2 IgM and IgG were absent in the acute and convalescent sera.
We report the case of a patient who had travelled to Japan and who presented mild respiratory symptoms during the COVID-19 outbreak period. There was transient existence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in his oropharynx. The RNA was absent in the six respiratory specimens that were subsequently tested. An anti-SARS-CoV-2 antibody response was absent in the acute and convalescent sera. The reported case indicates that transient colonization of SARS-CoV-2 in the upper respiratory tract is possible without inciting any antibody response against the virus.
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Affiliation(s)
- Yi-Chun Lin
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; School of Public Health, National Yang-Ming University, Taipei, Taiwan
| | - Cheng-Pin Chen
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Shu-Hsing Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Sui-Yuan Chang
- Department of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Po-Ren Hsueh
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.
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Chen CP, Lin PH, Chen LY, Ke MY, Cheng YW, Huang J. n-ZnO/p-Si Photodiodes with Improved Photoresponsivities and Acceptance Angles for Solar Applications. ACTA ACUST UNITED AC 2019. [DOI: 10.1149/1.3300418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kumar P, Tripathi SK, Chen CP, Wickstrom E, Thakur ML. Evaluating Ga-68 Peptide Conjugates for Targeting VPAC Receptors: Stability and Pharmacokinetics. Mol Imaging Biol 2019; 21:130-139. [PMID: 29802552 DOI: 10.1007/s11307-018-1207-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 12/16/2022]
Abstract
PURPOSE In recent years, considerable progress has been made in the use of gallium-68 labeled receptor-specific peptides for imaging oncologic diseases. The objective was to examine the stability and pharmacokinetics of [68Ga]NODAGA and DOTA-peptide conjugate targeting VPAC [combined for vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase-activating peptide (PACAP)] receptors on tumor cells. PROCEDURES A VPAC receptor-specific peptide was chosen as a model peptide and conjugated to NODAGA and DOTA via solid-phase synthesis. The conjugates were characterized by HPLC and MALDI-TOF. Following Ga-68 chelation, the radiochemical purity of Ga-68 labeled peptide conjugate was determined by radio-HPLC. The stability was tested against transmetallation using 100 nM Fe3+/Zn2+/Ca2+ ionic solution and against transchelation using 200 μM DTPA solution. The ex vivo and in vivo stability of the Ga-68 labeled peptide conjugate was tested in mouse plasma and urine. Receptor specificity was determined ex vivo by cell binding assays using human breast cancer BT474 cells. Positron emission tomography (PET)/X-ray computed tomography (CT) imaging, tissue distribution, and blocking studies were performed in mice bearing BT474 xenografts. RESULTS The chemical and radiochemical purity was greater than 95 % and both conjugates were stable against transchelation and transmetallation. Ex vivo stability at 60 min showed that the NODAGA-peptide-bound Ga-68 reduced to 42.1 ± 3.7 % (in plasma) and 37.4 ± 2.9 % (in urine), whereas the DOTA-peptide-bound Ga-68 was reduced to 1.2 ± 0.3 % (in plasma) and 4.2 ± 0.4 % (in urine) at 60 min. Similarly, the in vivo stability for [68Ga]NODAGA-peptide was decreased to 2.1 ± 0.2 % (in plasma) and 2.2 ± 0.4 % (in urine). For [68Ga]DOTA-peptide, it was decreased to 1.4 ± 0.3 % (in plasma) and 1.2 ± 0.4 % (in urine) at 60 min. The specific BT474 cell binding was 53.9 ± 0.8 % for [68Ga]NODAGA-peptide, 25.8 ± 1.4 % for [68Ga]-DOTA-peptide, and 18.8 ± 2.5 % for [68Ga]GaCl3 at 60 min. Inveon microPET/CT imaging at 1 h post-injection showed significantly (p < 0.05) higher tumor to muscle (T/M) ratio for [68Ga]NODAGA-peptide (3.4 ± 0.3) as compared to [68Ga]DOTA-peptide (1.8 ± 0.6). For [68Ga]GaCl3 and blocked mice, their ratios were 1.5 ± 0.6 and 1.5 ± 0.3 respectively. The tissue distributions data were similar to the PET imaging data. CONCLUSION NODAGA is superior to DOTA in terms of radiolabeling kinetics. The method of radiolabeling was reproducible and yielded higher specific activity. Although both agents have relatively low in vivo stability, PET/CT imaging studies delineated BC tumors with [68Ga]NODAGA-peptide, but not with [68Ga]DOTA-peptide.
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Affiliation(s)
- Pardeep Kumar
- Departments of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sushil K Tripathi
- Departments of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
| | - C P Chen
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China
| | - Eric Wickstrom
- Departments of Biochemistry & Molecular Biology, Thomas Jefferson University, Philadelphia, PA, USA.,Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Mathew L Thakur
- Departments of Radiology, Thomas Jefferson University, Philadelphia, PA, USA. .,Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA. .,Departments of Radiation Oncology, Thomas Jefferson University, 1020 Locust Street, JAH Suite 359, Philadelphia, PA, 19107, USA. .,Departments of Urology, Thomas Jefferson University, Philadelphia, PA, USA.
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Xu X, Shi JC, Wang CE, Liang L, Zheng R, Li K, Huang Y, Chen CP, Ye Q, Kan B. [Study on the mechanism of serotype conversion of historical isolates of Shigella flexneri]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 52:1050-1055. [PMID: 30392326 DOI: 10.3760/cma.j.issn.0253-9624.2018.10.016] [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: 11/05/2022]
Abstract
Objective: The serotype screening of Shigella flexneri from 1934 to 1965 preserved by the National Center for Medical Culture Collections was carried out, and the molecular characteristics of the serotype conversion strains were studied. Methods: Serotyping of Shigella flexneri in this study was conducted by slide agglutination and multiplex PCR, respectively. The gtrⅡ gene sequence alignment and pulsed field gel electrophoresis typing were performed on the serotype conversion strains. Results: Among the 255 strains of Shigella flexneri preserved in CMCC (B) from 1934 to 1965, 79 were carrying gtrⅡ gene, of which 19 strains and 1 strain were agglutinated with the Y serotype and X serotype, respectively, and furthermore, the multiplex PCR assays results showed serotypes 2a and 2b, respectively, and the strains were considered to have serotype conversion. The 20 strains carrying the gtrⅡ gene showed multiple nucleotide mutations. Besides 3 strains of 3 amino acid mutations, the amino acid sequences of the other 17 strains showed a stop codon in advance, resulting in functional inactivation of gtrⅡ. PFGE analysis revealed that the similarity between the serotype Y strain carrying the gtrⅡ gene and the serotype 2a strain was 75.8%-100%, and the similarity between the serotype X strain carrying the gtrⅡ gene and the serotype 2b strain was 81.6%-100%. Conclusion: Mutations in the gtrⅡ gene are more complicated in serotype-transforming Shigella flexneri serotype Y or X strains. Molecular typing suggests that the serotype-transforming Shigella flexneri serotype Y or X strains may be derived from the Shigella flexneri serotype 2a or 2b, and advance the serotype conversion to 1949.
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Affiliation(s)
- X Xu
- National Center for Medical Culture Collections, National Institutes for Food and Drug Control, Beijing 102629, China
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Chen CY, Chang HT, Chen CP, Sun FJ. First trimester placental vascular indices and volume by three-dimensional ultrasound in pre-gravid overweight women. Placenta 2019; 80:12-17. [PMID: 31103061 DOI: 10.1016/j.placenta.2019.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 01/02/2019] [Revised: 03/14/2019] [Accepted: 03/25/2019] [Indexed: 12/29/2022]
Abstract
OBJECTIVES To investigate changes of placental vascular indices and volume in pre-gravid overweight Chinese women during the first trimester using three-dimensional power Doppler ultrasound. METHODS This was a prospective observational study of the morphology of placentas in pre-gravid overweight (body mass index (BMI) ≥ 24 kg/m2) and non-overweight (BMI < 24 kg/m2) Chinese women during the first trimester of pregnancy. Data on placental vascular indices (vascularization index, flow index, and vascularization flow index (VFI)), placental volume, uterine artery pulsatility index (PI), and neonatal outcomes were obtained during the first trimester and analyzed. Linear regression analysis was used to evaluate confounding factors between BMI and ultrasound indices. RESULTS Of the 429 pregnant women enrolled, 68 (15.9%) were pre-gravid overweight. Placental VFI was significantly lower in the overweight group (p = 0.037). Conversely, placental volume was significantly larger in the overweight group (p = 0.044), and uterine artery PI was significantly higher in the overweight group (p = 0.021). After adjustments for confounding factors, there were still significant differences in placental VFI (unstandardized coefficient (B) -0.666, 95% confidence interval (CI) -1.306 - (-0.025)), placental volume (B 2.458, 95% CI 0.071-4.844), and uterine artery PI (B 0.152, 95% CI 0.030-0.274) between the two groups. CONCLUSIONS Placental vascular indices using three-dimensional power Doppler ultrasound can provide an insight into placental vascularization in pre-gravid overweight women in early pregnancy. Alterations in placental VFI, placental volume, and uterine artery PI occur during the first trimester in pre-gravid overweight women.
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Affiliation(s)
- C Y Chen
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan; Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.
| | - H T Chang
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - C P Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - F J Sun
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
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Chen CP, Cheng CY, Zou H, Cheng CH, Cheng SH, Chen CK, Chen CH, Bair MJ. Evaluation of cost-effectiveness of peginterferon plus ribavirin for chronic hepatitis C treatment and direct-acting antiviral agents among HIV-infected patients in the prison and community settings. J Microbiol Immunol Infect 2018; 52:556-562. [PMID: 30360951 DOI: 10.1016/j.jmii.2018.10.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 10/02/2018] [Accepted: 10/04/2018] [Indexed: 01/02/2023]
Abstract
BACKGROUND In Taiwan, the majority of chronic hepatitis C carriers with HIV co-infection are intravenous drug users and inmates in correctional facilities. Peginterferon and ribavirin (PegIFN/RBV) have been the standard-of-care for chronic hepatitis C virus (HCV) infection more than decades. We evaluated the estimated cost-effectiveness of PegIFN/RBV from the National Health Insurance Research Database, covering the population of Taiwan from 1998 to 2013. MATERIALS AND METHODS This is an observational study, and study during was 2010-2016 and a total of 239 patients were treated with PegIFN/RBV. Of them, 156 patients were treated in the correctional facilities of Taipei, Taoyuan, Taichung and Taitung prisons, and 83 patients were treated in communities. The cost-effectiveness was analyzed in regimens of PegIFN/RBV and direct-acting antiviral agents. RESULTS By multivariate analysis, the patients completed PegIFN/RBV in prison (adjusted odds ratio [aOR]: 4.56, 95% confidence interval [CI]: 1.58-13.12, p = 0.005), HCV RNA level <800,000 IU/mL (aOR: 4.0, 95% CI: 1.27-12.66, p = 0.02) at baseline, and the presence of early virologic response (EVR) (aOR: 7.67, 95% CI: 1.89-31.06, p = 0.004) were independent predictors for sustained virologic response (SVR). For the subgroups of prisoners, HIV-infected prisoners and HIV-infected patients in communities, the SVR rate was 73.8%, 72.0% and 36.8%, and the average medical-care cost was US$7,701, $7,893, and $15,443 per SVR achieved, respectively. Also, the estimated medical-care cost for genotype 6 was US$9211. CONCLUSIONS Chronic HCV/HIV co-infected patients with genotype 1 and 6 in the community setting could benefit from DAAs in Taiwan.
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Affiliation(s)
- Cheng-Pin Chen
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.
| | - Chien-Yu Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; School of Public Health, National Yang-Ming University, Taipei, Taiwan.
| | - Huachun Zou
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, China; School of Public Health, Sun Yat-sen University, Guangzhou, China; Kirby Institute, University of New South Wales, Sydney, Australia
| | - Chun-Han Cheng
- Division of Gastroenterology, Department of Internal Medicine, Taitung Mackay Memorial Hospital, Taiwan
| | - Shu-Hsing Cheng
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan; School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Cheng-Kuo Chen
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, China Medical University Hospital, Taichung City, Taiwan
| | - Ching-Hsiang Chen
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, China Medical University Hospital, Taichung City, Taiwan
| | - Ming-Jong Bair
- Division of Gastroenterology, Department of Internal Medicine, Taitung Mackay Memorial Hospital, Taiwan; Mackay Medical College, New Taipei City, Taiwan.
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Chen CP, Liu MF, Lin CF, Lin SP, Shi ZY. The association of molecular typing, vancomycin MIC, and clinical outcome for patients with methicillin-resistant Staphylococcus aureus infections. J Microbiol Immunol Infect 2015; 50:619-626. [PMID: 26497450 DOI: 10.1016/j.jmii.2015.08.015] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/28/2015] [Accepted: 08/31/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND/PURPOSE There are reports of an increase in vancomycin minimum inhibitory concentration (MIC) against methicillin-resistant Staphylococcus aureus (MRSA) over time, a phenomenon referred to as "MIC creep", but some studies have conflicting results. The aim of this study is to evaluate the association of molecular typing, vancomycin MIC, and clinical outcome for patients with MRSA infections. METHODS Thirty-two MRSA isolates from Taichung Veterans General Hospital (TCVGH), Taichung, Taiwan during the period of 2003 to 2008 were analyzed for the association of sequence typing, vancomycin MIC, and the correlated clinical outcome for patients with MRSA infections. The vancomycin MICs of 28 additional isolates from 2014 were used for the detection of MIC creep. RESULTS Among the genotypes of 32 isolates, there were 17 (53.1%) isolates with ST239-SCCmecIII, seven (21.9%) isolates with ST5-SCCmecII, six (18.8%) isolates with ST59-SCCmecIV, and two (6.2%) isolates with ST59-SCCmecVT. Two isolates had an MIC of 2 μg/mL and were identified as ST239-SCCmecIII. No statistically significant change in the distribution of MICs of all isolates was observed between 2003 and 2014 (p = 0.263). There was no significant difference in the mortality rates between two groups of patients with vancomycin MICs < 2 μg/mL and ≥ 2 μg/mL (p = > 0.99). CONCLUSION There was no vancomycin MIC creep in the period from 2003 to 2014 in this study. Appropriate prognostic models for assessment of the association among sequence types, vancomycin MICs, and clinical outcome warrant further investigation.
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Affiliation(s)
- Cheng-Pin Chen
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Meei-Fang Liu
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chin-Fu Lin
- Microbiology Section of the Medical Laboratory, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shih-Pin Lin
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Zhi-Yuan Shi
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Industrial Engineering and Enterprise Information, Tunghai University, Taichung, Taiwan.
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Yokozawa T, Chen CP. Evidence suggesting a nitric oxide-scavenging activity for traditional crude drugs, and action mechanisms of Sanguisorbae Radix against oxidative stress and aging. J Am Aging Assoc 2013; 24:19-30. [PMID: 23604872 DOI: 10.1007/s11357-001-0003-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In this series of experiments, we found that Sanguisorbae Radix extract possesses strong free radical-scavenging activity in vitro and in vivo. This crude drug protected against renal disease, which is closely associated with excessive generation of reactive oxygen species. We also showed that Sanguisorbae Radix extract can suppress lipid peroxidation and stimulate an antioxidant defense ability in SAM, suggesting that this crude drug may be an effective agent for ameliorating the pathological conditions related to excessive generation of free radicals and oxidant damage, particularly in the aging process.
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Affiliation(s)
- T Yokozawa
- Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama, 930-0194 Japan
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Chen CP, Wan JZ. A rapid learning and dynamic stepwise updating algorithm for flat neural networks and the application to time-series prediction. ACTA ACUST UNITED AC 2012; 29:62-72. [PMID: 18252280 DOI: 10.1109/3477.740166] [Citation(s) in RCA: 161] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A fast learning algorithm is proposed to find an optimal weights of the flat neural networks (especially, the functional-link network). Although the flat networks are used for nonlinear function approximation, they can be formulated as linear systems. Thus, the weights of the networks can be solved easily using a linear least-square method. This formulation makes it easier to update the weights instantly for both a new added pattern and a new added enhancement node. A dynamic stepwise updating algorithm is proposed to update the weights of the system on-the-fly. The model is tested on several time-series data including an infrared laser data set, a chaotic time-series, a monthly flour price data set, and a nonlinear system identification problem. The simulation results are compared to existing models in which more complex architectures and more costly training are needed. The results indicate that the proposed model is very attractive to real-time processes.
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Affiliation(s)
- C P Chen
- Dept. of Comput. Sci. & Eng., Wright State Univ., Dayton, OH
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Chen CP, Lin SP, Suo YN, Chern SR, Su JW, Wang W. Identification of a missense mutation of c.3064G>A, Gly1022Ser in exon 43 of COL1A1 gene in a girl with osteogenesis imperfecta type III. Genet Couns 2012; 23:359-365. [PMID: 23072183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Osteogenesis imperfecta (OI) types I-V have been inherited in an autosomal dominant pattern. OI type I is associated with mutations in COL1A1 mostly due to a null allele. OI types II-IV are associated with mutations in COL1A1 or COL1A2 and mostly are due to glycine substitutions. It has been suggested that the effect of glycine substitutions is position specific, and the substitution of glycine by serine has much less lethal effect than the substitutions by valine, aspartic acid, glutamic acid, arginine and cysteine. We report identification of c.3064G>A, GGT>AGT, Gly1022Ser (Gly(844) --> Ser844 in triple helix) in exon 43 of the COL1A1 gene in an 8-year-old girl with OI type III. Our report provides evidence that at triple helix glycine residue 844 (p.Gly1022), a glycine substitution by serine can result in OI type III but not a lethal outcome.
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Affiliation(s)
- C P Chen
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan.
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Chen CP, Lin SP, Chen MR, Su YN, Chern SR, Liu YP, Su JW, Lee MS, Wang W. Partial monosomy 3p (3p26.2 --> pter) and partial trisomy 5q (5q34 --> qter) in a girl with coarctation of the aorta, congenital heart defects, short stature, microcephaly and developmental delay. Genet Couns 2012; 23:405-413. [PMID: 23072190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A 1-year-and-3-month-old girl presented with psychomotor retardation, developmental delay, clinodactyly of the thumb, coarctation of the aorta, patent ductus arteriosus, peripheral pulmonary stenosis, atrial septal defect, microcephaly, brachycephaly, a small oval face, almond-shaped eyes, a down-turned mouth, a widened nasal bridge, hypertelorism, epicanthic folds, long philtrum, low-set large ears and but no craniosynostosis. Oligonucleotide-based array comparative genomic hybridization revealed a -4.79-Mb deletion of 3p26.2 --> pter encompassing CHL1 and CNTN4, and a -19.56-Mb duplication of 5q34 --> qter encompassing MSX2, NKX2-5 and NSD1. The karyotype of the girl was 46,XX,der(3)t(3;5)(p26.2;q34) pat. The present case adds distal 5q duplication to the list of chromosome aberrations associated with coarctation of the aorta.
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Affiliation(s)
- C P Chen
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan.
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Chen CP, Lin SP, Lin DS, Liu YP, Hsu LJ, Wang W. Clinical imaging findings in a girl with Hutchinson-Gilford progeria syndrome. Genet Couns 2012; 23:1-7. [PMID: 22611635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report an 82-year-old girl with premature aging, a karyotype of 46,XX and a de novo c.1824C>T mutation encoding p.G608G in the lamin A gene. The clinical features of accelerated aging and the molecular finding were consistent with the diagnosis of Hutchinson-Gilford progeria syndrome (HGPS). In this presentation, we demonstrate the radiological imaging findings of skeletal, oral and craniofacial phenotypes of abnormalities associated with HGPS. The oral and craniofacial abnormalities caused dental caries, severe malocclusion, and swallowing, feeding and speech problems. Dural calcification, and granulation in the ear drum and external ear canal were additionally observed.
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Affiliation(s)
- C P Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.
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Ackerman WE, Bulmer JN, Carter AM, Chaillet JR, Chamley L, Chen CP, Chuong EB, Coleman SJ, Collet GP, Croy BA, de Mestre AM, Dickinson H, Ducray J, Enders AC, Fogarty NME, Gauster M, Golos T, Haider S, Heazell AE, Holland OJ, Huppertz B, Husebekk A, John RM, Johnsen GM, Jones CJP, Kalionis B, König J, Lorenzon AR, Moffett A, Moreira de Mello JC, Nuzzo AM, Parham P, Parolini O, Petroff MG, Pidoux G, Ramírez-Pinilla MP, Robinson WP, Rolfo A, Sadovsky Y, Soma H, Southcombe JH, Tilburgs T, Lash GE. IFPA Meeting 2011 workshop report III: Placental immunology; epigenetic and microRNA-dependent gene regulation; comparative placentation; trophoblast differentiation; stem cells. Placenta 2011; 33 Suppl:S15-22. [PMID: 22154501 DOI: 10.1016/j.placenta.2011.11.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 10/24/2011] [Revised: 11/22/2011] [Accepted: 11/24/2011] [Indexed: 10/14/2022]
Abstract
Workshops are an important part of the IFPA annual meeting as they allow for discussion of specialised topics. At IFPA meeting 2011 there were twelve themed workshops, five of which are summarized in this report. These workshops related to various aspects of placental biology: 1) immunology; 2) epigenetics; 3) comparative placentation; 4) trophoblast differentiation; 5) stem cells.
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Affiliation(s)
- W E Ackerman
- Laboratory of Perinatal Research, Department of Obstetrics and Gynecology, The Ohio State University, Columbus, OH, USA
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Chen CP, Lin SP, Su YN, Chern SR, Tsai EJ, Wu PC, Lee CC, Wang W. Mosaic ring chromosome 4 in a child with mild dysmorphisms, congenital heart defects and developmental delay. Genet Couns 2011; 22:321-326. [PMID: 22029176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Chen CP, Lin SP, Chen M, Su YN, Chern SR, Wang TY, Liu YP, Tsai FJ, Lee CC, Chen YJ, Wang W. Mosaic supernumerary r(1)(p13.2q23.3) in a 10-year-old girl with epilepsy facial asymmetry psychomotor retardation kyphoscoliosis dermatofibrosarcoma and multiple exostoses. Genet Couns 2011; 22:273-280. [PMID: 22029168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report molecular cytogenetic characterization of mosaic supernumerary r(1)(p13.2q23.3) in a 10-year-old girl with epilepsy, facial asymmetry, psychomotor retardation, kyphoscoliosis, dermatofibrosarcoma and multiple exostoses. The supernumerary r(1) is associated with gene dosage increase of CHRNB2, ADAR and KCNJ10 in the pericentromeric area of 1q, and a breakpoint within CTTNBP2NL at 1p13.2. We speculate that the gene dosage increase of CHRNB2, ADAR and KCNJ10 is most likely responsible for epilepsy, and the breakpoint at 1p13.2 in the supernumerary r(1) is most likely responsible for the development of multiple exostoses and osteochondroma in this patient.
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Affiliation(s)
- C P Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.
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Chen CP, Lin SP, Su YN, Chern SR, Tsai FJ, Wu PC, Chen LF, Wang W. A 24.2-Mb deletion of 4q12 --> q21.21 characterized by array CGH in a 131/2-year-old girl with short stature, mental retardation, developmental delay, hyperopia, exotropia, enamel defects, delayed tooth eruption and delayed puberty. Genet Couns 2011; 22:255-261. [PMID: 22029166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report molecular and cytogenetic characterization of proximal deletion of chromosome 4q, del(4)(q12 --> q21.21) in a 131/2-year-old girl with short stature, mental retardation, developmental delay, hyperopia, exotropia, enamel defects, delayed tooth eruption and delayed puberty. We speculate that haploinsufficiency of the AMTN, ENAM and AMBN genes is most likely responsible for dental disorders, haploinsufficiency of the BMP2K genes is most likely responsible for ocular disorders, and haploinsufficiency of the EREG, AREG and BTC genes is most likely responsible for delayed puberty in this patient.
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Affiliation(s)
- C P Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.
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Chen CP, Lin SP, Su YN, Chern SR, Tsai FJ, Chen WL, Wang W. Self-injurious behavior associated with trisomy 9p (9p13.1 --> p24.3). Genet Couns 2011; 22:327-331. [PMID: 22029177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Chen CP, Lin PH, Hung YJ, Hsu SS, Chen LY, Cheng YW, Ke MY, Huang YY, Chang CH, Chiu CH, Kuo HC, Huang J. Investigation of light absorption properties and acceptance angles of nanopatterned GZO/a-Si/p(+)-Si photodiodes. Nanotechnology 2010; 21:215201. [PMID: 20431206 DOI: 10.1088/0957-4484/21/21/215201] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In this work, n-GZO/a:amorphous-Si(i:intrinsic)/p( + )-Si photodiodes are fabricated. We employed a nanosphere lithographic technique to obtain nanoscale patterns on either the a-Si(i) or p( + )-Si surface. As compared with the planar n-GZO/p( + )-Si diode, the devices with nanopatterned a-Si(i) and nanopatterned p( + )-Si substrates show a 32% and 36.2% enhancement of photoresponsivity. Furthermore, the acceptance angle measurement reveals that the nanostructured photodiodes have larger acceptance angles than the planar structure. It also shows that the device with the nanocone structure has a higher acceptance angle than that with the nanorod structure.
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Affiliation(s)
- Cheng-Pin Chen
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 106, Taiwan
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Chen LY, Huang YY, Chang CH, Sun YH, Cheng YW, Ke MY, Chen CP, Huang J. High performance InGaN/GaN nanorod light emitting diode arrays fabricated by nanosphere lithography and chemical mechanical polishing processes. Opt Express 2010; 18:7664-7669. [PMID: 20588606 DOI: 10.1364/oe.18.007664] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We fabricated InGaN/GaN nanorod light emitting diode (LED) arrays using nanosphere lithography for nanorod formation, PECVD (plasma enhanced chemical vapor deposition) grown SiO(2) layer for sidewall passivation, and chemical mechanical polishing for uniform nanorod contact. The nano-device demonstrates a reverse current 4.77nA at -5V, an ideality factor 7.35, and an optical output intensity 6807mW/cm(2) at the injection current density 32A/cm(2) (20mA). Moreover, the investigation of the droop effect for such a nanorod LED array reveals that junction heating is responsible for the sharp decrease at the low current.
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Affiliation(s)
- Liang-Yi Chen
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1, Roosevelt Road, Section 4, Taipei, 106, Taiwan.
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Narasimhalu K, Effendy S, Sim CH, Lee JM, Chen I, Hia SB, Xue HL, Corrales MP, Chang HM, Wong MC, Chen CP, Tan EK. A randomized controlled trial of rivastigmine in patients with cognitive impairment no dementia because of cerebrovascular disease. Acta Neurol Scand 2010; 121:217-24. [PMID: 19951274 DOI: 10.1111/j.1600-0404.2009.01263.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The safety and efficacy of early acetylcholinesterase inhibitors therapy in patients with cognitive impairment no dementia (CIND) after a cerebrovascular accident have not been examined. In this study, we investigated the safety and efficacy of rivastigmine in cognition, particularly executive function in patients with CIND because of cerebrovascular disease. METHODS This study was a 24-week, double-blind, randomized, placebo-controlled trial of ischemic stroke patients seen at a tertiary hospital who had cognitive impairment no dementia because of cerebrovascular disease. The intervention was either rivastigmine or placebo up to 9 mg/day. The primary outcome of interest was mean change from baseline in the Ten-Point Clock Drawing and Color Trails 1 and 2. RESULTS Fifty patients were randomized into rivastigmine (n = 25) and placebo (n = 25) arms. Patients in the rivastigmine group showed statistically significant improvement (1.70 vs 0.13, P = 0.02) on the animal subtask of the verbal fluency measure compared with placebo. There was also a trend (non-significant) towards improvement in Color Trails II. CONCLUSIONS In this pilot study, we demonstrated that rivastigmine was well tolerated in patients with CIND because of cerebrovascular disease and may potentially improve executive functioning.
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Affiliation(s)
- K Narasimhalu
- Center for Molecular Epidemiology, National University of Singapore, Singapore
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Chen CP, Tsai FJ, Lee CC, Chen WL, Pan CW, Wu PC, Wang W. Prenatal diagnosis of satellited 21q derived from pericentric inversion involving the satellite stalk region and terminal 21q. Genet Couns 2010; 21:353-357. [PMID: 20964129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Chen CP, Chern SR, Tsai FJ, Lin HH, Wui PC, Lee CC, Pan CW, Wang W. Prenatal diagnosis of partial monosomy 1q (1q42.3-qter) associated with hydrocephalus and corpus callosum agenesis. Genet Couns 2010; 21:451-455. [PMID: 21290974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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46
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Chen CP, Lin SP, Chern SR, Tsai FJ, Lee CC, Pan CW, Wu PC, Wang W. A 5.3-Mb duplication of 9p12 --> p13.1 characterized by array CGH in a female infant with developmental delay. Genet Couns 2010; 21:457-460. [PMID: 21290975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Chen CP, Lin SP, Chern SR, Tsai FJ, Wu PC, Lee CC, Chen LF, Lee MS, Wang W. Deletion 2q37.3->qter and duplication 15q24.3->qter characterized by array CGH in a girl with epilepsy and dysmorphic features. Genet Couns 2010; 21:263-267. [PMID: 20681230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Ke MY, Lu TC, Yang SC, Chen CP, Cheng YW, Chen LY, Chen CY, He JH, Huang J. UV light emission from GZO/ZnO/GaN heterojunction diodes with carrier confinement layers. Opt Express 2009; 17:22912-22917. [PMID: 20052218 DOI: 10.1364/oe.17.022912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this work, GZO/ZnO/GaN diodes with the light emitting ZnO layer sandwiched between two SiO(2) thin films was fabricated and characterized. We observed a strong excitonic emission at the wavelength 377nm with the Mg(2+) deep level transition and oxygen vacancy induced recombination significantly suppressed. In comparison, light emission from the GZO/GaN device (without SiO(2) barriers) is mainly dominant by defect radiation. Furthermore, the device with confinement layers demonstrated a much higher UV intensity than the blue-green emission of the GZO/GaN p-n device.
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Affiliation(s)
- Min-Yung Ke
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1, Roosevelt Road, Sec. 4,Taipei,106 Taiwan
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Chen CH, Chen TH, Kuo SJ, Chen CP, Lee DJ, Ke YY, Yeh KT, Ma GC, Liu CS, Shih JC, Chen M. Genetic evaluation and management of fetal chylothorax: review and insights from a case of Noonan syndrome. Lymphology 2009; 42:134-138. [PMID: 19927903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Fetal chylothorax is one of a very few syndromes that can be treated in utero with thoracoamniotic shunting or pleurodesis by OK-432 as two major therapeutic modalities. We report on a fetus with Noonan syndrome and a missense mutation c.182A > C (p.Asp61Ala) of PTPN11 who responded poorly to antenatal pleurodesis by OK-432. Based on our previous publication and this case study, we propose that fetal chylothorax of a distinct genetic origin may respond poorly to OK-432 pleurodesis.
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Affiliation(s)
- C H Chen
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan
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Chen CP, Lin PH, Chen LY, Ke MY, Cheng YW, Huang J. Nanoparticle-coated n-ZnO/p-Si photodiodes with improved photoresponsivities and acceptance angles for potential solar cell applications. Nanotechnology 2009; 20:245204. [PMID: 19468172 DOI: 10.1088/0957-4484/20/24/245204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this work, n-ZnO/p-Si photodiodes were fabricated and characterized to explore their potential applications in solar cells. With a coating of silica nanoparticles, we observed the enhancement of photoresponsivity and acceptance angle at a wavelength between 400 and 650 nm. The 17.6% increase of the photoresponsivity over the conventional device is due to the improved optical transmission toward the semiconductor through the silica nanoparticles. Furthermore, the acceptance angle of the nanoparticle coated device is dramatically increased, which is attributed to the effect of Bragg diffraction.
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Affiliation(s)
- Cheng-Pin Chen
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, 1, Roosevelt Road, Section 4 Taipei 106, Taiwan
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