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da Fonseca GC, Cavalcante LTF, Brustolini OJ, Luz PM, Pires DC, Jalil EM, Peixoto EM, Grinsztejn B, Veloso VG, Nazer S, Costa CAM, Villela DAM, Goedert GT, Santos CVBD, Rodrigues NCP, do Couto Motta F, Siqueira MM, Coelho LE, Struchiner CJ, Vasconcelos ATR. Differential Type-I Interferon Response in Buffy Coat Transcriptome of Individuals Infected with SARS-CoV-2 Gamma and Delta Variants. Int J Mol Sci 2023; 24:13146. [PMID: 37685953 PMCID: PMC10487928 DOI: 10.3390/ijms241713146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/07/2023] [Accepted: 08/20/2023] [Indexed: 09/10/2023] Open
Abstract
The innate immune system is the first line of defense against pathogens such as the acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The type I-interferon (IFN) response activation during the initial steps of infection is essential to prevent viral replication and tissue damage. SARS-CoV and SARS-CoV-2 can inhibit this activation, and individuals with a dysregulated IFN-I response are more likely to develop severe disease. Several mutations in different variants of SARS-CoV-2 have shown the potential to interfere with the immune system. Here, we evaluated the buffy coat transcriptome of individuals infected with Gamma or Delta variants of SARS-CoV-2. The Delta transcriptome presents more genes enriched in the innate immune response and Gamma in the adaptive immune response. Interactome and enriched promoter analysis showed that Delta could activate the INF-I response more effectively than Gamma. Two mutations in the N protein and one in the nsp6 protein found exclusively in Gamma have already been described as inhibitors of the interferon response pathway. This indicates that the Gamma variant evolved to evade the IFN-I response. Accordingly, in this work, we showed one of the mechanisms that variants of SARS-CoV-2 can use to avoid or interfere with the host Immune system.
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Affiliation(s)
- Guilherme C. da Fonseca
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis, Rio de Janeiro 25651-076, Brazil; (G.C.d.F.); (L.T.F.C.); (O.J.B.)
| | - Liliane T. F. Cavalcante
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis, Rio de Janeiro 25651-076, Brazil; (G.C.d.F.); (L.T.F.C.); (O.J.B.)
| | - Otávio J. Brustolini
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis, Rio de Janeiro 25651-076, Brazil; (G.C.d.F.); (L.T.F.C.); (O.J.B.)
| | - Paula M. Luz
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Debora C. Pires
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Emilia M. Jalil
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Eduardo M. Peixoto
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Beatriz Grinsztejn
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Valdilea G. Veloso
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Sandro Nazer
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Carlos A. M. Costa
- Escola Nacional de Saúde Pública, FIOCRUZ, Rio de Janeiro 21041-210, Brazil; (C.A.M.C.); (N.C.P.R.)
| | - Daniel A. M. Villela
- Programa de Computação Científica (PROCC), FIOCRUZ, Rio de Janeiro 21040-900, Brazil;
| | - Guilherme T. Goedert
- Escola de Matemática Aplicada (EMAp), Fundação Getúlio Vargas, Rio de Janeiro 22250-900, Brazil;
| | - Cleber V. B. D. Santos
- Instituto de Medicina Social Hesio Cordeiro (IMS), Universidade do Estado do Rio de Janeiro, Rio de Janeiro 20550-013, Brazil;
| | - Nadia C. P. Rodrigues
- Escola Nacional de Saúde Pública, FIOCRUZ, Rio de Janeiro 21041-210, Brazil; (C.A.M.C.); (N.C.P.R.)
- Instituto de Medicina Social Hesio Cordeiro (IMS), Universidade do Estado do Rio de Janeiro, Rio de Janeiro 20550-013, Brazil;
| | | | | | - Lara E. Coelho
- Instituto Nacional de Infectologia Evandro Chagas, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (P.M.L.); (D.C.P.); (E.M.J.); (E.M.P.); (B.G.); (V.G.V.); (S.N.); (L.E.C.)
| | - Claudio J. Struchiner
- Escola de Matemática Aplicada (EMAp), Fundação Getúlio Vargas, Rio de Janeiro 22250-900, Brazil;
- Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro 21040-360, Brazil; (F.d.C.M.); (M.M.S.)
| | - Ana Tereza R. Vasconcelos
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis, Rio de Janeiro 25651-076, Brazil; (G.C.d.F.); (L.T.F.C.); (O.J.B.)
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Castillo G, Mora-Díaz JC, Breuer M, Singh P, Nelli RK, Giménez-Lirola LG. Molecular mechanisms of human coronavirus NL63 infection and replication. Virus Res 2023; 327:199078. [PMID: 36813239 PMCID: PMC9944649 DOI: 10.1016/j.virusres.2023.199078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023]
Abstract
Human coronavirus NL63 (HCoV-NL63) is spread globally, causing upper and lower respiratory tract infections mainly in young children. HCoV-NL63 shares a host receptor (ACE2) with severe acute respiratory syndrome coronavirus (SARS-CoV) and SARS-CoV-2 but, unlike them, HCoV-NL63 primarily develops into self-limiting mild to moderate respiratory disease. Although with different efficiency, both HCoV-NL63 and SARS-like CoVs infect ciliated respiratory cells using ACE2 as receptor for binding and cell entry. Working with SARS-like CoVs require access to BSL-3 facilities, while HCoV-NL63 research can be performed at BSL-2 laboratories. Thus, HCoV-NL63 could be used as a safer surrogate for comparative studies on receptor dynamics, infectivity and virus replication, disease mechanism, and potential therapeutic interventions against SARS-like CoVs. This prompted us to review the current knowledge on the infection mechanism and replication of HCoV-NL63. Specifically, after a brief overview on the taxonomy, genomic organization and virus structure, this review compiles the current HCoV-NL63-related research in virus entry and replication mechanism, including virus attachment, endocytosis, genome translation, and replication and transcription. Furthermore, we reviewed cumulative knowledge on the susceptibility of different cells to HCoV-NL63 infection in vitro, which is essential for successful virus isolation and propagation, and contribute to address different scientific questions from basic science to the development and assessment of diagnostic tools, and antiviral therapies. Finally, we discussed different antiviral strategies that have been explored to suppress replication of HCoV-NL63, and other related human coronaviruses, by either targeting the virus or enhancing host antiviral mechanisms.
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Affiliation(s)
- Gino Castillo
- Department of Veterinary Diagnostic and Production Animal Medicine, Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA 50011, USA
| | - Juan Carlos Mora-Díaz
- Department of Veterinary Diagnostic and Production Animal Medicine, Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA 50011, USA
| | - Mary Breuer
- Department of Veterinary Diagnostic and Production Animal Medicine, Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA 50011, USA
| | - Pallavi Singh
- Department of Biological Sciences, Northern Illinois University, DeKalb, IL 60115, USA
| | - Rahul K Nelli
- Department of Veterinary Diagnostic and Production Animal Medicine, Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA 50011, USA
| | - Luis G Giménez-Lirola
- Department of Veterinary Diagnostic and Production Animal Medicine, Veterinary Diagnostic Laboratory, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA 50011, USA.
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Karami H, Sadeghi K, Zadheidar S, Saadatmand F, Mirsalehi N, Ardestani NH, Kalantari S, Farahmand M, Yavarian J, Mokhtari‐Azad T. Surveillance of endemic coronaviruses during the COVID‐19 pandemic in Iran, 2021–2022. Influenza Other Respir Viruses 2023; 17:e13128. [PMID: 36970571 PMCID: PMC10037967 DOI: 10.1111/irv.13128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/02/2023] [Indexed: 03/26/2023] Open
Abstract
Background Human coronaviruses (HCoVs) 229E, OC43, HKU1, and NL63 are common viruses that continuously circulate in the human population. Previous studies showed the circulation of HCoVs during the cold months in Iran. We studied the circulation of HCoVs during coronavirus disease 2019 (COVID‐19) pandemic to find the impact of pandemic on the circulation of these viruses. Methods As a cross‐sectional survey conducted during 2021 to 2022, of all throat swabs sent to Iran National Influenza Center from patients with severe acute respiratory infection, 590 samples were selected to test for HCoVs using one‐step real‐time RT‐PCR. Results Overall, 28 out of 590 (4.7%) tested samples were found to be positive for at least one HCoVs. HCoV‐OC43 was the most common (14/590 or 2.4%), followed by HCoV‐HKU1 (12/590 or 2%) and HCoV‐229E (4/590 or 0.6%), while HCoV‐NL63 was not detected. HCoVs were detected in patients of all ages and throughout the study period with peaks in the cold months of the year. Conclusions Our multicenter survey provides insight into the low circulation of HCoVs during the COVID‐19 pandemic in Iran in 2021/2022. Hygiene habits and social distancing measures might have important role in decreasing of HCoVs transmission. We believe that surveillance studies are needed to track the pattern of HCoVs distributions and detect changes in the epidemiology of such viruses to set out strategies in order to timely control the future outbreaks of HCoVs throughout the nation.
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Affiliation(s)
- Hassan Karami
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Kaveh Sadeghi
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Sevrin Zadheidar
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Fatemeh Saadatmand
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Negar Mirsalehi
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Nima Hoveidi Ardestani
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Shirin Kalantari
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Mohammad Farahmand
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
| | - Jila Yavarian
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
- Research Center for Antibiotic Stewardship & Antimicrobial ResistanceTehran University of Medical SciencesTehranIran
| | - Talat Mokhtari‐Azad
- Department of Virology, School of Public HealthTehran University of Medical SciencesTehranIran
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Cantoni D, Siracusano G, Mayora-Neto M, Pastori C, Fantoni T, Lytras S, Di Genova C, Hughes J, Lopalco L, Temperton N. Analysis of Antibody Neutralisation Activity against SARS-CoV-2 Variants and Seasonal Human Coronaviruses NL63, HKU1, and 229E Induced by Three Different COVID-19 Vaccine Platforms. Vaccines (Basel) 2022; 11:58. [PMID: 36679903 PMCID: PMC9864028 DOI: 10.3390/vaccines11010058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022] Open
Abstract
Coronaviruses infections, culminating in the recent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic beginning in 2019, have highlighted the importance of effective vaccines to induce an antibody response with cross-neutralizing activity. COVID-19 vaccines have been rapidly developed to reduce the burden of SARS-CoV-2 infections and disease severity. Cross-protection from seasonal human coronaviruses (hCoVs) infections has been hypothesized but is still controversial. Here, we investigated the neutralizing activity against ancestral SARS-CoV-2 and the variants of concern (VOCs) in individuals vaccinated with two doses of either BNT162b2, mRNA-1273, or AZD1222, with or without a history of SARS-CoV-2 infection. Antibody neutralizing activity to SARS-CoV-2 and the VOCs was higher in BNT162b2-vaccinated subjects who were previously infected with SARS-CoV-2 and conferred broad-spectrum protection. The Omicron BA.1 variant was the most resistant among the VOCs. COVID-19 vaccination did not confer protection against hCoV-HKU1. Conversely, antibodies induced by mRNA-1273 vaccination displayed a boosting in their neutralizing activity against hCoV-NL63, whereas AZD1222 vaccination increased antibody neutralization against hCoV-229E, suggesting potential differences in antigenicity and immunogenicity of the different spike constructs used between various vaccination platforms. These data would suggest that there may be shared epitopes between the HCoVs and SARS-CoV-2 spike proteins.
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Affiliation(s)
- Diego Cantoni
- Viral Pseudotype Unit, Medway School of Pharmacy, The Universities of Kent and Greenwich at Medway, Chatham ME4 4TB, UK
| | - Gabriel Siracusano
- Division of Immunology, Transplantation and Infectious Disease, Immunobiology of HIV Group, San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Martin Mayora-Neto
- Viral Pseudotype Unit, Medway School of Pharmacy, The Universities of Kent and Greenwich at Medway, Chatham ME4 4TB, UK
| | - Claudia Pastori
- Division of Immunology, Transplantation and Infectious Disease, Immunobiology of HIV Group, San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Tobia Fantoni
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, 37129 Verona, Italy
| | - Spyros Lytras
- MRC-Centre for Virus Research, University of Glasgow, Glasgow G12 BQQ, UK
| | - Cecilia Di Genova
- Viral Pseudotype Unit, Medway School of Pharmacy, The Universities of Kent and Greenwich at Medway, Chatham ME4 4TB, UK
| | - Joseph Hughes
- MRC-Centre for Virus Research, University of Glasgow, Glasgow G12 BQQ, UK
| | | | - Lucia Lopalco
- Division of Immunology, Transplantation and Infectious Disease, Immunobiology of HIV Group, San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Nigel Temperton
- Viral Pseudotype Unit, Medway School of Pharmacy, The Universities of Kent and Greenwich at Medway, Chatham ME4 4TB, UK
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5
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Nath M, Debnath P. Therapeutic role of traditionally used Indian medicinal plants and spices in combating COVID-19 pandemic situation. J Biomol Struct Dyn 2022:1-20. [PMID: 35773779 DOI: 10.1080/07391102.2022.2093793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The coronavirus disease (COVID-19) caused by SARS-CoV-2 is a big challenge and burning issue to the scientific community and doctors worldwide. Globally, COVID-19 has created a health disaster and adversely affects the economic growth. Although some vaccines have already emerged, no therapeutic medication has yet been approved by FDA for the treatment of COVID-19 patients. Traditionally, we have been using different medicinal plants like neem, tulsi, tea, and many spices like garlic, ginger, turmeric, black seed, onion, etc. for the treatment of flu-like diseases. In this paper, we are highlighting the recent research progress in the identification of natural products from the Indian medicinal plants and spices that have potential inhibition properties against SARS-CoV-2. This study will provide an initiative to stimulate further research by providing useful guidance to the medicinal chemists for designing new protease inhibitors effective against SARS-CoV-2 in future.
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Affiliation(s)
- Moumita Nath
- Department of Botany, Tripura University, Suryamaninagar, Tripura, India
| | - Pradip Debnath
- Department of Chemistry, Maharaja Bir Bikram College, Agartala, Tripura, India
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6
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Pandey SK, Janghel RR, Mishra PK, Kaabra R. Machine learning based COVID -19 disease recognition using CT images of SIRM database. J Med Eng Technol 2022; 46:590-603. [PMID: 35639099 DOI: 10.1080/03091902.2022.2080883] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The COVID-19 pandemic, probably one of the most widespread pandemics humanity has encountered in the twenty first century, caused death to almost 1.75 M people worldwide, impacting almost 80 M lives with direct contact. In order to contain the spread of coronavirus, it is necessary to develop a reliant and quick method to identify those who are affected and isolate them until full recovery is made. The imagery knowledge has been shown to be useful for quick COVID-19 diagnosis. Though the scans of computational tomography (CT) demonstrate a range of viral infection signals, considering the vast number of images, certain visual characteristics are challenging to distinguish and can take a long time to be identified by radiologists. In this study for detection of the COVID-19, a dataset is formed by taking 3764 images. The feature extraction process is applied to the dataset to increase the classification performance. Techniques like Grey Level Co-occurrence Matrix (GLCM) and Discrete Wavelet Transform (DWT) are used for feature extraction. Then various machine learning algorithms applied such as Support Vector Machines (SVM), Linear Discriminant Analysis (LDA), Multi- Level Perceptron, Naive Bayes, K-Nearest Neighbours and Random Forests are used for classification of COVID-19 disease detection. Sensitivity, Specificity, Accuracy, Precision, and F-score are the metrics used to measure the performance of different machine learning models. Among these machine learning models SVM with GLCM as feature extraction technique using 10-fold cross validation gives the best classification result with 99.70% accuracy, 99.80% sensitivity and 97.03% F-score. We also ran these tests on different data sets and found that the results are similar across those too, as discussed later in the results section.
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Affiliation(s)
- Saroj Kumar Pandey
- Department of Computer Engineering & Applications, GLA University, Mathura, India
| | - Rekh Ram Janghel
- Department of Information Technology, National Institute of Information Technology, Raipur, India
| | | | - Rachana Kaabra
- Department of Information Technology, RCET, Bhilai, India
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Kumar A, Sharma M, Richardson CD, Kelvin DJ. Potential of Natural Alkaloids From Jadwar ( Delphinium denudatum) as Inhibitors Against Main Protease of COVID-19: A Molecular Modeling Approach. Front Mol Biosci 2022; 9:898874. [PMID: 35620478 PMCID: PMC9127362 DOI: 10.3389/fmolb.2022.898874] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 04/08/2022] [Indexed: 02/05/2023] Open
Abstract
The ongoing pandemic coronavirus disease (COVID-19) caused by a novel corona virus, namely, severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has had a major impact on global public health. COVID-19 cases continue to increase across the globe with high mortality rates in immunocompromised patients. There is still a pressing demand for drug discovery and vaccine development against this highly contagious disease. To design and develop antiviral drugs against COVID-19, the main protease (Mpro) has emerged as one of the important drug targets. In this context, the present work explored Jadwar (Delphinium denudatum)-derived natural alkaloids as potential inhibitors against Mpro of SARS-CoV-2 by employing a combination of molecular docking and molecular dynamic simulation-based methods. Molecular docking and interaction profile analysis revealed strong binding on the Mpro functional domain with four natural alkaloids viz. panicutine (-7.4 kcal/mol), vilmorrianone (-7.0 kcal/mol), denudatine (-6.0 kcal/mol), and condelphine (-5.9 kcal/mol). The molecular docking results evaluated by using the MD simulations on 200 nanoseconds confirmed highly stable interactions of these compounds with the Mpro. Additionally, mechanics/generalized Born/Poisson-Boltzmann surface area (MM/G/P/BSA) free energy calculations also affirmed the docking results. Natural alkaloids explored in the present study possess the essential drug-likeness properties, namely, absorption, distribution, metabolism, and excretion (ADME), and are in accordance with Lipinski's rule of five. The results of this study suggest that these four bioactive molecules, namely, condelphine, denudatine, panicutine, and vilmorrianone, might be effective candidates against COVID-19 and can be further investigated using a number of experimental methods.
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Affiliation(s)
- Anuj Kumar
- Laboratory of Immunity, Shantou University Medical College, Shantou, China
- Department of Microbiology and Immunology, Canadian Centre for Vaccinology CCfV, Faculty of Medicine, Dalhousie University, Halifax, Canada
| | - Mansi Sharma
- Laboratory of Immunity, Shantou University Medical College, Shantou, China
- Department of Microbiology and Immunology, Canadian Centre for Vaccinology CCfV, Faculty of Medicine, Dalhousie University, Halifax, Canada
| | - Christopher D. Richardson
- Department of Microbiology and Immunology, Canadian Centre for Vaccinology CCfV, Faculty of Medicine, Dalhousie University, Halifax, Canada
| | - David J. Kelvin
- Laboratory of Immunity, Shantou University Medical College, Shantou, China
- Department of Microbiology and Immunology, Canadian Centre for Vaccinology CCfV, Faculty of Medicine, Dalhousie University, Halifax, Canada
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8
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Kumar A, Mishra DC, Angadi UB, Yadav R, Rai A, Kumar D. Inhibition Potencies of Phytochemicals Derived from Sesame Against SARS-CoV-2 Main Protease: A Molecular Docking and Simulation Study. Front Chem 2021; 9:744376. [PMID: 34692642 PMCID: PMC8531729 DOI: 10.3389/fchem.2021.744376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 09/06/2021] [Indexed: 12/18/2022] Open
Abstract
The ongoing COVID-19 pandemic, caused by SARS-CoV-2, has now spread across the nations with high mortality rates and multifaceted impact on human life. The proper treatment methods to overcome this contagious disease are still limited. The main protease enzyme (Mpro, also called 3CLpro) is essential for viral replication and has been considered as one of the potent drug targets for treating COVID-19. In this study, virtual screening was performed to find out the molecular interactions between 36 natural compounds derived from sesame and the Mpro of COVID-19. Four natural metabolites, namely, sesamin, sesaminol, sesamolin, and sesamolinol have been ranked as the top interacting molecules to Mpro based on the affinity of molecular docking. Moreover, stability of these four sesame-specific natural compounds has also been evaluated using molecular dynamics (MD) simulations for 200 nanoseconds. The molecular dynamics simulations and free energy calculations revealed that these compounds have stable and favorable energies, causing strong binding with Mpro. These screened natural metabolites also meet the essential conditions for drug likeness such as absorption, distribution, metabolism, and excretion (ADME) properties as well as Lipinski's rule of five. Our finding suggests that these screened natural compounds may be evolved as promising therapeutics against COVID-19.
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Affiliation(s)
- Anuj Kumar
- Centre for Agricultural Bioinformatics (CABin), ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Dwijesh Chandra Mishra
- Centre for Agricultural Bioinformatics (CABin), ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Ulavappa Basavanneppa Angadi
- Centre for Agricultural Bioinformatics (CABin), ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Rashmi Yadav
- Division of Germplasm Evaluation, ICAR-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Anil Rai
- Centre for Agricultural Bioinformatics (CABin), ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
| | - Dinesh Kumar
- Centre for Agricultural Bioinformatics (CABin), ICAR- Indian Agricultural Statistics Research Institute, New Delhi, India
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Zhao K, Ke Z, Hu H, Liu Y, Li A, Hua R, Guo F, Xiao J, Zhang Y, Duan L, Yan XF, Gao YG, Liu B, Xia Y, Li Y. Structural Basis and Function of the N Terminus of SARS-CoV-2 Nonstructural Protein 1. Microbiol Spectr 2021; 9:e0016921. [PMID: 34132580 PMCID: PMC8552758 DOI: 10.1128/spectrum.00169-21] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 05/12/2021] [Indexed: 11/20/2022] Open
Abstract
Nonstructural protein 1 (Nsp1) of severe acute respiratory syndrome coronaviruses (SARS-CoVs) is an important pathogenic factor that inhibits host protein translation by means of its C terminus. However, its N-terminal function remains elusive. Here, we determined the crystal structure of the N terminus (amino acids [aa] 11 to 125) of SARS-CoV-2 Nsp1 at a 1.25-Å resolution. Further functional assays showed that the N terminus of SARS-CoVs Nsp1 alone loses the ability to colocalize with ribosomes and inhibit protein translation. The C terminus of Nsp1 can colocalize with ribosomes, but its protein translation inhibition ability is significantly weakened. Interestingly, fusing the C terminus of Nsp1 with enhanced green fluorescent protein (EGFP) or other proteins in place of its N terminus restored the protein translation inhibitory ability to a level equivalent to that of full-length Nsp1. Thus, our results suggest that the N terminus of Nsp1 is able to stabilize the binding of the Nsp1 C terminus to ribosomes and act as a nonspecific barrier to block the mRNA channel, thus abrogating host mRNA translation.
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Affiliation(s)
- Kaitao Zhao
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Zunhui Ke
- Department of Blood Transfusion, Wuhan Children’s Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Hongbing Hu
- Department of Blood Transfusion, Wuhan Children’s Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Yahui Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Aixin Li
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Rong Hua
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Fangteng Guo
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Junfeng Xiao
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Zhang
- Faculty of Science (Medical Science), The University of Sydney, Sydney, New South Wales, Australia
| | - Ling Duan
- Department of Blood Transfusion, Wuhan Children’s Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Xin-Fu Yan
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Yong-Gui Gao
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Bing Liu
- BioBank, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- MRC Centre for Molecular Bacteriology and Infection, Imperial College London, United Kingdom
| | - Yuchen Xia
- State Key Laboratory of Virology and Hubei Province Key Laboratory of Allergy and Immunology, Institute of Medical Virology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Yan Li
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Tongji-Rongcheng Center for Biomedicine, Huazhong University of Science and Technology, Wuhan, China
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10
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Seifi T, Reza Kamali A. Antiviral performance of graphene-based materials with emphasis on COVID-19: A review. MEDICINE IN DRUG DISCOVERY 2021; 11:100099. [PMID: 34056572 PMCID: PMC8151376 DOI: 10.1016/j.medidd.2021.100099] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/06/2021] [Accepted: 05/19/2021] [Indexed: 02/06/2023] Open
Abstract
Coronavirus disease-2019 has been one of the most challenging global epidemics of modern times with a large number of casualties combined with economic hardships across the world. Considering that there is still no definitive cure for the recent viral crisis, this article provides a review of nanomaterials with antiviral activity, with an emphasis on graphene and its derivatives, including graphene oxide, reduced graphene oxide and graphene quantum dots. The possible interactions between surfaces of such nanostructured materials with coronaviruses are discussed. The antiviral mechanisms of graphene materials can be related to events such as the inactivation of virus and/or the host cell receptor, electrostatic trapping and physico-chemical destruction of viral species. These effects can be enhanced by functionalization and/or decoration of carbons with species that enhances graphene-virus interactions. The low-cost and large-scale preparation of graphene materials with enhanced antiviral performances is an interesting research direction to be explored.
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Affiliation(s)
- Tahereh Seifi
- Energy and Environmental Materials Research Centre (E2MC), School of Metallurgy, Northeastern University, Shenyang 110819, China
| | - Ali Reza Kamali
- Energy and Environmental Materials Research Centre (E2MC), School of Metallurgy, Northeastern University, Shenyang 110819, China
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11
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El-Senousy WM, Shouman M. Human Coronavirus NL63 Among Other Respiratory Viruses in Clinical Specimens of Egyptian Children and Raw Sewage Samples. FOOD AND ENVIRONMENTAL VIROLOGY 2021; 13:322-328. [PMID: 34086254 PMCID: PMC8176886 DOI: 10.1007/s12560-021-09479-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 05/29/2021] [Indexed: 06/12/2023]
Abstract
The objective of this study was to investigate human coronavirus NL63 (HCoV-NL63) prevalence among the other respiratory viruses such as parainfluenza, respiratory syncytial virus, and non-enteric adenoviruses in clinical specimens of Egyptian children and raw sewage samples. One hundred clinical specimens were collected from Egyptian children suffering from upper and lower respiratory viral infections in the years 2005-2006 to detect HCoV-NL63 genome using RT-PCR. All the specimens were negative for the virus. Also, a complete absence of HCoV-NL63 genome was observed in the twenty-four raw sewage samples collected from two wastewater treatment plants within Greater Cairo from February 2006 to January 2007. Using nested RT-PCR, parainfluenza virus type 1, respiratory syncytial virus type A, adenovirus type 4, and adenovirus type 7 were detected in 3%, 2%, 5%, and 2% of the clinical specimens, respectively. Of these viruses, only adenovirus type 4 was detected in 1/24 (4.17%) of the raw sewage samples, while a complete absence of the other investigated respiratory viruses was observed in the raw sewage samples. The low percentage of positivity in the clinical specimens, the concentration method of the raw sewage samples, and the indirect routes of transmission may be the reasons for the absence of respiratory viruses in raw sewage samples. On the other hand, enteric adenoviruses were detected in 21/24 (87.5%) of the raw sewage samples with a higher prevalence of adenovirus type 41 than adenovirus type 40. A direct route of transmission of enteric viruses to raw sewage may be the reason for the high positivity percentage of enteric adenoviruses in raw sewage samples.
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Affiliation(s)
- Waled Morsy El-Senousy
- Environmental Virology Lab, Water Pollution Research Department, Environmental Research Division and Food-Borne Viruses Group, Centre of Excellence for Advanced Sciences, National Research Centre (NRC), 33 El-Buhouth st., Dokki, Giza, 12622, Egypt.
| | - Mohamed Shouman
- Pediatric Department, Centre of Medical Excellence, Medical Research Division, NRC, Dokki, Giza, Egypt
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12
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Cordes AK, Rehrauer WM, Accola MA, Wölk B, Hilfrich B, Heim A. Fully automated detection and differentiation of pandemic and endemic coronaviruses (NL63, 229E, HKU1, OC43 and SARS-CoV-2) on the hologic panther fusion. J Med Virol 2021; 93:4438-4445. [PMID: 33350484 DOI: 10.1002/jmv.26749] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/15/2020] [Accepted: 12/19/2020] [Indexed: 12/18/2022]
Abstract
The hologic panther fusion (PF) platform provides fully automated CE marked diagnostics for respiratory viruses, including the recently discovered severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) by a transcription mediated amplification (TMA) assay, but not for the endemic human coronaviruses (hCoV). Therefore, a laboratory developed test (LDT) comprising a multiplexed reverse transcription polymerase chain reaction (RT-PCR) protocol that detects and differentiates the four hCoV NL63, 229E, HKU1, and OC43 was adapted on the PF. The novel CE marked Aptima SARS-CoV-2 TMA and the LDT for hCoV were validated with 321 diagnostic specimens from the upper and lower respiratory tract in comparison to two SARS-CoV-2 RT-PCRs (PF E-gene RT-PCR and genesig RT-PCR, 157 specimens) or the R-GENE hCoV/hParaFlu RT-PCR (164 specimens), respectively. For the endemic hCoV, results were 96.3% concordant with two specimens discordantly positive in the PF and four specimens discordantly positive in the R-GENE assay. All discordantly positive samples had Ct values between 33 and 39. The PF hCoV LDT identified 23 hCoV positive specimens as NL63, 15 as 229E, 15 as HKU1, and 25 as OC43. The Aptima SARS-CoV-2 TMA gave 99.4% concordant results compared to the consensus results with a single specimen discordantly positive. Moreover, 36 samples from proficiency testing panels were detected and typed correctly by both novel methods. In conclusion, the SARS-CoV-2 TMA and the LDT for hCoV enhanced the diagnostic spectrum of the PF for all coronaviruses circulating globally for a multitude of diagnostic materials from the upper and lower respiratory tract.
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Affiliation(s)
- Anne K Cordes
- Institute of Virology, Medical School Hannover, Hannover, Germany
| | - William M Rehrauer
- Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Molly A Accola
- Molecular Diagnostics, Clinical Labs, University of Wisconsin Hospital, Madison, Wisconsin, USA
| | - Benno Wölk
- LADR Medical Laboratory Dr Kramer and Colleagues, Geesthacht, Germany
| | | | - Albert Heim
- Institute of Virology, Medical School Hannover, Hannover, Germany
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13
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Park DE, Higdon MM, Prosperi C, Baggett HC, Brooks WA, Feikin DR, Hammitt LL, Howie SRC, Kotloff KL, Levine OS, Madhi SA, Murdoch DR, O’Brien KL, Scott JAG, Thea DM, Antonio M, Awori JO, Baillie VL, Bunthi C, Kwenda G, Mackenzie GA, Moore DP, Morpeth SC, Mwananyanda L, Paveenkittiporn W, Ziaur Rahman M, Rahman M, Rhodes J, Sow SO, Tapia MD, Deloria Knoll M. Upper Respiratory Tract Co-detection of Human Endemic Coronaviruses and High-density Pneumococcus Associated With Increased Severity Among HIV-Uninfected Children Under 5 Years Old in the PERCH Study. Pediatr Infect Dis J 2021; 40:503-512. [PMID: 33883479 PMCID: PMC8104011 DOI: 10.1097/inf.0000000000003139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/25/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Severity of viral respiratory illnesses can be increased with bacterial coinfection and can vary by sex, but influence of coinfection and sex on human endemic coronavirus (CoV) species, which generally cause mild to moderate respiratory illness, is unknown. We evaluated CoV and pneumococcal co-detection by sex in childhood pneumonia. METHODS In the 2011-2014 Pneumonia Etiology Research for Child Health study, nasopharyngeal and oropharyngeal (NP/OP) swabs and other samples were collected from 3981 children <5 years hospitalized with severe or very severe pneumonia in 7 countries. Severity by NP/OP detection status of CoV (NL63, 229E, OC43 or HKU1) and high-density (≥6.9 log10 copies/mL) pneumococcus (HDSpn) by real-time polymerase chain reaction was assessed by sex using logistic regression adjusted for age and site. RESULTS There were 43 (1.1%) CoV+/HDSpn+, 247 CoV+/HDSpn-, 449 CoV-/HDSpn+ and 3149 CoV-/HDSpn- cases with no significant difference in co-detection frequency by sex (range 51.2%-64.0% male, P = 0.06). More CoV+/HDSpn+ pneumonia was very severe compared with other groups for both males (13/22, 59.1% versus range 29.1%-34.7%, P = 0.04) and females (10/21, 47.6% versus 32.5%-43.5%, P = 0.009), but only male CoV+/HDSpn+ required supplemental oxygen more frequently (45.0% versus 20.6%-28.6%, P < 0.001) and had higher mortality (35.0% versus 5.3%-7.1%, P = 0.004) than other groups. For females with CoV+/HDSpn+, supplemental oxygen was 25.0% versus 24.8%-33.3% (P = 0.58) and mortality was 10.0% versus 9.2%-12.9% (P = 0.69). CONCLUSIONS Co-detection of endemic CoV and HDSpn was rare in children hospitalized with pneumonia, but associated with higher severity and mortality in males. Findings may warrant investigation of differences in severity by sex with co-detection of HDSpn and SARS-CoV-2.
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Affiliation(s)
- Daniel E. Park
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, District of Columbia
| | - Melissa M. Higdon
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Christine Prosperi
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Henry C. Baggett
- Division of Global Health Protection, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - W. Abdullah Brooks
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Bangladesh
| | - Daniel R. Feikin
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Laura L. Hammitt
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Steve R. C. Howie
- Medical Research Council Unit, Basse, The Gambia
- Department of Paediatrics, University of Auckland, New Zealand
| | - Karen L. Kotloff
- Department of Pediatrics and Department of Medicine, Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Orin S. Levine
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
- Bill & Melinda Gates Foundation, Seattle, Washington
| | - Shabir A. Madhi
- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit
- Department of Science and Technology/National Research Foundation: Vaccine Preventable Diseases Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - David R. Murdoch
- Department of Pathology and Biomedical Sciences, University of Otago
- Microbiology Unit, Canterbury Health Laboratories, Christchurch, New Zealand
| | - Katherine L. O’Brien
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - J. Anthony G. Scott
- KEMRI Wellcome Trust Research Programme, Centre for Geographic Medicine Research, Coast, Kilifi, Kenya
- Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Donald M. Thea
- Department of Global Health and Development, Boston University School of Public Health, Boston, Massachusetts
| | - Martin Antonio
- Medical Research Council Unit, Basse, The Gambia
- Department of Pathogen Molecular Biology, London School of Hygiene and Tropical Medicine
- Microbiology and Infection Unit, Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Juliet O. Awori
- KEMRI Wellcome Trust Research Programme, Centre for Geographic Medicine Research, Coast, Kilifi, Kenya
| | - Vicky L. Baillie
- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit
| | - Charatdao Bunthi
- Division of Global Health Protection, Thailand Ministry of Public Health–US Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand
| | - Geoffrey Kwenda
- Right to Care-Zambia
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka, Zambia
| | - Grant A. Mackenzie
- Medical Research Council Unit, Basse, The Gambia
- Murdoch Children’s Research Institute, Melbourne, Australia
- London School of Hygiene and Tropical Medicine, London, United Kingdom
- Department of Paediatrics, University of Melbourne, Australia
| | - David P. Moore
- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit
- Department of Paediatrics & Child Health, Chris Hani Baragwanath Academic Hospital and University of the Witwatersrand, South Africa
| | - Susan C. Morpeth
- KEMRI Wellcome Trust Research Programme, Centre for Geographic Medicine Research, Coast, Kilifi, Kenya
- Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Microbiology Laboratory, Middlemore Hospital, Counties Manukau District Health Board, Auckland, New Zealand
| | - Lawrence Mwananyanda
- Department of Global Health and Development, Boston University School of Public Health, Boston, Massachusetts
- EQUIP-Zambia, Lusaka, Zambia
| | | | - Mohammed Ziaur Rahman
- Virology Laboratory, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Bangladesh
| | - Mustafizur Rahman
- Virology Laboratory, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Bangladesh
| | - Julia Rhodes
- Division of Global Health Protection, Thailand Ministry of Public Health–US Centers for Disease Control and Prevention Collaboration, Nonthaburi, Thailand
| | - Samba O. Sow
- Centre pour le Développement des Vaccins (CVD-Mali), Bamako, Mali
| | - Milagritos D. Tapia
- Department of Pediatrics, Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Maria Deloria Knoll
- From the Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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14
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Bakhshandeh B, Sorboni SG, Javanmard AR, Mottaghi SS, Mehrabi MR, Sorouri F, Abbasi A, Jahanafrooz Z. Variants in ACE2; potential influences on virus infection and COVID-19 severity. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2021; 90:104773. [PMID: 33607284 PMCID: PMC7886638 DOI: 10.1016/j.meegid.2021.104773] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/08/2021] [Accepted: 02/12/2021] [Indexed: 02/07/2023]
Abstract
The third pandemic of coronavirus infection, called COVID-19 disease, was first detected in November 2019th. Various determinants of disease progression such as age, sex, virus mutations, comorbidity, lifestyle, host immune response, and genetic background variation have caused clinical variability of COVID-19. The causative agent of COVID-19 is an enveloped coronavirus named severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) that invades host cells using an endocytic pathway. The SARS-CoV-2 spike protein is the main viral protein that contributes to the fusion of the virus particle to the host cell through angiotensin-converting enzyme 2 (ACE2). The highly conserved expression of ACE2 is found in various animals, which indicates its pivotal physiological function. The ACE2 has a crucial role in vascular, renal, and myocardial physiology. Genetic factors contributing to the outcome of SARS-CoV-2 infection are unknown; however, variants in the specific sites of ACE2 gene could be regarded as a main genetic risk factor for COVID-19. Given that ACE2 is the main site for virus landing on host cells, the effect of amino acid sequences of ACE2 on host susceptibility to COVID-19 seems reasonable. It would likely have a substantial role in the occurrence of a wide range of clinical symptoms. Several ACE2 variants can affect the protein stability, influencing the interaction between spike protein and ACE2 through imposing conformational changes while some other variants are known to cause a decrease or an increase in the ligand-receptor affinity. The other variations are located at the proteolytic cleavage site, which can influence virus infection; because soluble ACE2 can act as a decoy receptor for virus and decrease virus intake by cell surface ACE2. Notably, polymorphisms of regulatory and non-coding regions such as promoter in ACE2, can play crucial role in different expression levels of ACE2 among different individuals. Many studies should be performed to investigate the involvement of ACE2 polymorphism with susceptibility to COVID-19. Herein, we discuss some reported associations between variants of ACE2 and COVID-19 in details. In addition, the mode of action of ACE2 and its role in SARS-CoV-2 infection are highlighted which is followed by addressing the effects of several ACE2 variants on its protein stability, viral tropism or ligand-receptor affinity, secondary and tertiary structure or protein conformation, proteolytic cleavage site, and finally inter-individual clinical variability in COVID-19. The polymorphisms of regulatory regions of ACE2 and their effect on expression levels of ACE2 are also provided in this review. Such studies can improve the prediction of the affinity of mutant ACE2 variations with spike protein, and help the biopharmaceutical industry to design effective approaches for recombinant hACE2 therapy and vaccination of COVID-19 disease.
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Affiliation(s)
- Behnaz Bakhshandeh
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran; Department of Microbiology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
| | | | - Amir-Reza Javanmard
- Molecular Genetics Department, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Seyed Saeed Mottaghi
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran
| | - Mohammad-Reza Mehrabi
- Department of Microbial Biotechnology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Farzaneh Sorouri
- Department of Pharmaceutical Biomaterials, Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
| | - Ardeshir Abbasi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zohreh Jahanafrooz
- Department of Biology, Faculty of Sciences, University of Maragheh, Maragheh, Iran
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15
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Suwannarong K, Janetanakit T, Kanthawee P, Suwannarong K, Theamboonlers A, Poovorawan Y, Tun HM, Chanabun S, Amonsin A. Coronavirus seroprevalence among villagers exposed to bats in Thailand. Zoonoses Public Health 2021; 68:464-473. [PMID: 33864357 PMCID: PMC8251071 DOI: 10.1111/zph.12833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2021] [Indexed: 12/19/2022]
Abstract
A serological survey of human coronavirus antibodies among villagers in 10 provinces of Thailand was conducted during 2016–2018. Serum samples (n = 364) were collected from participants from the villages and tested for coronavirus antibodies using a human coronavirus IgG ELISA kit. Our results showed that 10.44% (38/364; 21 males and 17 females) of the villagers had antibodies against human coronaviruses. The odds ratio for coronavirus positivity in the villagers in the central region who were exposed to bats was 4.75, 95% CI 1.04–21.70, when compared to that in the non‐exposed villagers. The sociodemographics, knowledge, attitudes and practices (KAP) of the villagers were also recorded and analysed by using a quantitative structured questionnaire. Our results showed that 62.36% (227/364) of the villagers had been exposed to bats at least once in the past six months. Low monthly family income was statistically significant in increasing the risk for coronavirus seropositivity among the villagers (OR 2.91, 95% CI 1.13–7.49). In‐depth interviews among the coronavirus‐positive participants (n = 30) showed that cultural context, local norms and beliefs could influence to bat exposure activities. In conclusion, our results provide baseline information on human coronavirus antibodies and KAP regarding to bat exposure among villagers in Thailand.
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Affiliation(s)
- Kanokwan Suwannarong
- Center of Excellence for Emerging and Re-emerging Infectious Diseases in Animals, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Taveesak Janetanakit
- Center of Excellence for Emerging and Re-emerging Infectious Diseases in Animals, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | | | | | - Apiradee Theamboonlers
- Center of Excellence for Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Yong Poovorawan
- Center of Excellence for Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Hein M Tun
- HKU-Pasteur Research Pole, School of Public Health, LKS Faculty of Medicine, University of Hong Kong, Hong Kong.,School of Public Health, Nanjing Medical University, Nanjing, China
| | - Sutin Chanabun
- Sirinthorn College of Public Health Khon Kaen, Ministry of Public Health, Khon Kaen, Thailand
| | - Alongkorn Amonsin
- Center of Excellence for Emerging and Re-emerging Infectious Diseases in Animals, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
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16
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Uhteg K, Carroll KC, Mostafa HH. Coronavirus Detection in the Clinical Microbiology Laboratory: Are We Ready for Identifying and Diagnosing a Novel Virus? Clin Lab Med 2020; 40:459-472. [PMID: 33121615 PMCID: PMC7414311 DOI: 10.1016/j.cll.2020.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Endemic species of coronavirus (HCoV-OC43, HCoV-229E, HCoV-NL63, and HCoV-HKU1) are frequent causes of upper respiratory tract infections. Three highly pathogenic coronaviruses have been associated with outbreaks and epidemics and have challenged clinical microbiology laboratories to quickly develop assays for diagnosis. Their initial characterization was achieved by molecular methods. With the great advance in metagenomic whole-genome sequencing directly from clinical specimens, diagnosis of novel coronaviruses could be quickly implemented into the workflow of managing cases of pneumonia of unknown cause, which will markedly affect the time of the initial characterization and accelerate the initiation of outbreak control measures.
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17
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Cimolai N. Complicating Infections Associated with Common Endemic Human Respiratory Coronaviruses. Health Secur 2020; 19:195-208. [PMID: 33186086 DOI: 10.1089/hs.2020.0067] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Coronaviruses OC43, 229E, NL63, and HKU1 are endemic human respiratory coronaviruses that typically cause mild to moderate upper respiratory infections, similar to the common cold. They also may cause simple and complicated lower respiratory infections, otitis media, asthma exacerbations, gastroenteritis, and a few systemic complications. These viruses are usually seasonal (with winter dominance) and affect nearly all age groups. The seasonal and annual variation in virus prevalence has implications for understanding the concept of acquired immunity and its persistence or diminution. Coronaviruses generally have outbreak potential in susceptible populations of any age, particularly in patients with comorbidities, who tend to have increased clinical disease. These 4 coronaviruses are often found in the context of what appears to be coinfection with other pathogens, but especially other viruses. If coronaviruses are not specifically tested for, the sole detection of a viral copathogen would suggest the pathogen is the causative agent, when a coronavirus may be culpable, or both. The detection of these viruses in circumstances where respiratory viruses are generally sought in clinical samples is, therefore, justified. These pathogens can be chronically shed from the respiratory tract, which is more likely to occur among immunocompromised and complicated patients. These viruses share the potential for genetic drift. The genome is among the largest of RNA viruses, and the capability of these viruses to further change is likely underestimated. Given the potential disease among humans, it is justified to search for effective antiviral chemotherapy for these viruses and to consider uses in niche situations should effective therapy be defined. Whereas SARS-CoV-2 may follow the epidemiological pattern of SARS-CoV and extinguish slowly over time, there is yet concern that SARS-CoV-2 may establish itself as an endemic human respiratory coronavirus similar to OC43, 2299E, NL63, and HKU1. Until sufficient data are acquired to better understand the potential of SARS-CoV-2, continued work on antiviral therapy and vaccination is imperative.
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Affiliation(s)
- Nevio Cimolai
- Nevio Cimolai, MD, FRCPC, is a Professor, Department of Pathology and Laboratory Medicine, Faculty of Medicine, University of British Columbia; he is also Medical Staff, Pathology and Laboratory Medicine, Children's and Women's Health Centre of British Columbia; both in Vancouver, Canada
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18
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Audi A, AlIbrahim M, Kaddoura M, Hijazi G, Yassine HM, Zaraket H. Seasonality of Respiratory Viral Infections: Will COVID-19 Follow Suit? Front Public Health 2020; 8:567184. [PMID: 33042956 PMCID: PMC7522168 DOI: 10.3389/fpubh.2020.567184] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 08/27/2020] [Indexed: 12/14/2022] Open
Abstract
Respiratory viruses, including coronaviruses, are known to have a high incidence of infection during winter, especially in temperate regions. Dry and cold conditions during winter are the major drivers for increased respiratory tract infections as they increase virus stability and transmission and weaken the host immune system. The novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) emerged in China in December 2020 and swiftly spread across the globe causing substantial health and economic burdens. Several countries are battling with the second wave of the virus after a devastating first wave of spread, while some are still in the midst of their first wave. It remains unclear whether SARS-CoV-2 will eventually become seasonal or will continue to circulate year-round. In an attempt to address this question, we review the current knowledge regarding the seasonality of respiratory viruses including coronaviruses and the viral and host factors that govern their seasonal pattern. Moreover, we discuss the properties of SARS-CoV-2 and the potential impact of meteorological factors on its spread.
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Affiliation(s)
- Amani Audi
- Department of Experimental Pathology, Immunology & Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Faculty of Medicine, Center for Infectious Disease Research, American University of Beirut, Beirut, Lebanon
| | - Malak AlIbrahim
- Department of Experimental Pathology, Immunology & Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Faculty of Medicine, Center for Infectious Disease Research, American University of Beirut, Beirut, Lebanon
| | - Malak Kaddoura
- Department of Experimental Pathology, Immunology & Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Faculty of Medicine, Center for Infectious Disease Research, American University of Beirut, Beirut, Lebanon
| | - Ghina Hijazi
- Department of Experimental Pathology, Immunology & Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Faculty of Medicine, Center for Infectious Disease Research, American University of Beirut, Beirut, Lebanon
| | - Hadi M. Yassine
- Biomedical Research Center and College of Health Sciences-QU Health, Qatar University, Doha, Qatar
| | - Hassan Zaraket
- Department of Experimental Pathology, Immunology & Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Faculty of Medicine, Center for Infectious Disease Research, American University of Beirut, Beirut, Lebanon
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19
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Akaji K, Konno H. Design and Evaluation of Anti-SARS-Coronavirus Agents Based on Molecular Interactions with the Viral Protease. Molecules 2020; 25:molecules25173920. [PMID: 32867349 PMCID: PMC7504761 DOI: 10.3390/molecules25173920] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 08/14/2020] [Accepted: 08/21/2020] [Indexed: 11/16/2022] Open
Abstract
Three types of new coronaviruses (CoVs) have been identified recently as the causative viruses for the severe pneumonia-like respiratory illnesses, severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and corona-virus disease 2019 (COVID-19). Neither therapeutic agents nor vaccines have been developed to date, which is a major drawback in controlling the present global pandemic of COVID-19 caused by SARS coronavirus 2 (SARS-CoV-2) and has resulted in more than 20,439,814 cases and 744,385 deaths. Each of the 3C-like (3CL) proteases of the three CoVs is essential for the proliferation of the CoVs, and an inhibitor of the 3CL protease (3CLpro) is thought to be an ideal therapeutic agent against SARS, MERS, or COVID-19. Among these, SARS-CoV is the first corona-virus isolated and has been studied in detail since the first pandemic in 2003. This article briefly reviews a series of studies on SARS-CoV, focusing on the development of inhibitors for the SARS-CoV 3CLpro based on molecular interactions with the 3CL protease. Our recent approach, based on the structure-based rational design of a novel scaffold for SARS-CoV 3CLpro inhibitor, is also included. The achievements summarized in this short review would be useful for the design of a variety of novel inhibitors for corona-viruses, including SARS-CoV-2.
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Affiliation(s)
- Kenichi Akaji
- Department of Medicinal Chemistry, Kyoto Pharmaceutical University, Yamashina, Kyoto 607-8414, Japan
- Hamari Chemicals, Ltd., Suminoe-ku, Osaka 559-0034, Japan
- Correspondence:
| | - Hiroyuki Konno
- Chemical Engineering and Biochemical Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan;
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Zhang D, Ma Z, Chen H, Lu Y, Chen X. Valinomycin as a potential antiviral agent against coronaviruses: A review. Biomed J 2020; 43:414-423. [PMID: 33012699 PMCID: PMC7417921 DOI: 10.1016/j.bj.2020.08.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/23/2020] [Accepted: 08/06/2020] [Indexed: 12/28/2022] Open
Abstract
Human coronaviruses (HCoVs), including severe acute respiratory syndrome coronavirus (SARS-CoV), Middle East respiratory syndrome coronavirus (MERS-CoV), and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), have been resulting in global epidemics with heavy morbidity and mortality. Unfortunately, there are currently no specific medicines that can better treat these coronaviruses. Drug repurposing is an effective and economical strategy for drug discovery from existing drugs, natural products, and synthetic compounds. In this review, the broad-spectrum antiviral activity of valinomycin (VAL), especially its activity against coronaviruses such as SARS-CoV, MERS-CoV, human coronavirus OC43 (HCoV-OC43), were summarized, it highlights that VAL has tremendous potential for use as a novel antiviral agent against SARS-CoV-2.
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Affiliation(s)
- Dong Zhang
- Institute of Fermentation Engineering, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
| | - Zhi Ma
- Institute of Fermentation Engineering, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
| | - Hanchi Chen
- Institute of Fermentation Engineering, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China
| | - Yuele Lu
- Institute of Fermentation Engineering, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China.
| | - Xiaolong Chen
- Institute of Fermentation Engineering, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, PR China.
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21
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Somasundaram R, Choraria A, Antonysamy M. An approach towards development of monoclonal IgY antibodies against SARS CoV-2 spike protein (S) using phage display method: A review. Int Immunopharmacol 2020; 85:106654. [PMID: 32512271 PMCID: PMC7266779 DOI: 10.1016/j.intimp.2020.106654] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/28/2020] [Accepted: 05/28/2020] [Indexed: 01/08/2023]
Abstract
The present state of diagnostic and therapeutic developmental race for vaccines against the SARS CoV-2 (nCOVID-19) focuses on prevention and control of this global pandemic which also represents a critical challenge to the global health community. Although development of novel vaccines can prevent the SARS CoV-2 infections, it is still impeded by several other factors and therefore novel approaches towards treatment and management of this disease is the urgent need. Passive immunotherapy plays a vital role as a possible alternative to meet this challenge and among various antibody sources, chicken egg yolk antibodies (IgY) can be used as an alternative to mammalian antibodies which have been previously studied against SARS CoV outbreak in China. In this review, we discuss the strategies for the use of chicken egg yolk (IgY) antibodies in the development of rapid diagnosis and immunotherapy against SARS CoV-2. Also, IgY antibodies have previously been used against various respiratory bacterial and viral infections in humans and animals. Compared to mammalian antibodies (IgG), chicken egg yolk antibodies (IgY) have greater binding affinity to specific antigens, ease of extraction and lower production costs, hence possessing remarkable pathogen-neutralizing activity of pathogens in respiratory and lungs. We provide an overall importance for the use of monoclonal chicken egg yolk antibodies (IgY) using phage display method describing their potential passive immunotherapeutic application for the treatment and prevention of SARS CoV-2 infection which is simple, fast and safe way of approach for treating patients effectively.
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MESH Headings
- Animals
- Antibodies, Monoclonal/immunology
- Antibodies, Viral/immunology
- Antibody Affinity
- Antibody Specificity
- Betacoronavirus/genetics
- Betacoronavirus/immunology
- COVID-19
- COVID-19 Testing
- Cell Surface Display Techniques
- Chickens
- Clinical Laboratory Techniques
- Coronavirus Infections/diagnosis
- Coronavirus Infections/therapy
- Egg Yolk
- Forecasting
- Humans
- Immunization, Passive
- Immunoglobulins/immunology
- Mammals/immunology
- Models, Molecular
- Pandemics
- Pneumonia, Viral/diagnosis
- Pneumonia, Viral/therapy
- RNA, Viral/genetics
- SARS-CoV-2
- Single-Chain Antibodies/immunology
- Species Specificity
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/immunology
- Spike Glycoprotein, Coronavirus/metabolism
- COVID-19 Serotherapy
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Affiliation(s)
| | - Ankit Choraria
- Department of Microbiology, PSG College of Arts & Science, Coimbatore, TN, India.
| | - Michael Antonysamy
- Department of Microbiology, PSG College of Arts & Science, Coimbatore, TN, India.
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22
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Gupta A, Kumar S, Kumar R, Choudhary AK, Kumari K, Singh P, Kumar V. COVID-19: Emergence of Infectious Diseases, Nanotechnology Aspects, Challenges, and Future Perspectives. ChemistrySelect 2020; 5:7521-7533. [PMID: 32835089 PMCID: PMC7361534 DOI: 10.1002/slct.202001709] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 06/22/2020] [Indexed: 01/08/2023]
Abstract
Wuhan, a city of China, is the epicenter for the pandemic outbreak of coronavirus disease-2019 (COVID-19). It has become a severe public health challenge to the world and established a public health emergency of international worry. This infectious disease has pulled down the economy of almost all top developed nations. The coronaviruses (CoVs) known for various epidemics caused time to time. Infectious diseases such as severe acute respiratory syndrome (SARS) and middle east respiratory syndrome (MERS), followed by COVID-19, are all coronaviruses led outbreaks that scourged the history of mankind. CoVs evolved themselves to more infectious, transmissible, and more pandemic with time. To prevent the spread of the SARS-CoV-2, many countries have ordered the complete lockdown to combat the outbreak. This paper briefly discussed the historical background of CoVs and the evolution of human coronaviruses (HCoVs), the case studies and the development of their antiviral medications. The viral infection encountered with present-day challenges and futuristic approaches with the help of nanotechnology to minimize the spread of infectious viruses. The antiviral drugs and their clinical advances, along with herbal medicines for viral inhibition and immunity boosters, are described. Elaboration of tables related to CoVs for the compilation of the literature has been adopted for the better understanding.
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Affiliation(s)
- Akanksha Gupta
- Department of ChemistrySri Venkateswara CollegeUniversity of DelhiIndia.
| | - Sanjay Kumar
- Department of ChemistryDeshbandhu CollegeUniversity of DelhiIndia.
| | - Ravinder Kumar
- Department of Chemistry, Gurukula Kangri VishwavidyalayaHaridwarIndia.
| | | | - Kamlesh Kumari
- Department of ZoologyDeen Dayal Upadhyaya CollegeDelhiIndia.
| | - Prashant Singh
- Department of ChemistryAtma Ram Sanatan Dharma CollegeDelhi UniversityNew DelhiIndia.
| | - Vinod Kumar
- Department of ChemistryKirori Mal CollegeUniversity of DelhiIndia
- Special Centre for Nano SciencesJawaharlal Nehru UniversityDelhiIndia
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23
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Oberemok VV, Laikova KV, Yurchenko KA, Fomochkina II, Kubyshkin AV. SARS-CoV-2 will continue to circulate in the human population: an opinion from the point of view of the virus-host relationship. Inflamm Res 2020; 69:635-640. [PMID: 32350571 PMCID: PMC7190393 DOI: 10.1007/s00011-020-01352-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 12/12/2022] Open
Abstract
At the population level, the virus-host relationship is not set up to end with the complete elimination of either or both. Pathogen-resistant individuals will always remain in the host population. In turn, the virus can never completely eliminate the host population, because evolutionarily such an event is a dead end for the virus as an obligate intracellular parasite. A certain existential balance exists in the virus-host relationship. Against this backdrop, viral epidemics and pandemics only become manifest and egregious to human beings when tens and hundreds of thousands of people die and the question emerges what caused the high mortality peaks on the death chart. The answer seems clear; the emerging strain of the virus is new to the host population, and new mutations of the virus and natural selection will lead to a survival of only genetically resistant individuals in a host population. The dangers inherent to a novel virus are due to new features generally inthe molecular structure of proteins, which enable the virus to infect the cells of the host organism more intensively, dramatically challenging host immunity, and thus be transmitted more readily in the host population. In this article, we will concentrate on the facts currently available about severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which has caused COVID-19 (coronavirus disease 2019) pandemic and try to predict its development and consequences based on the virus-host relationship. In fact, only two scenarios will occur simultaneously in the very near future: people who are genetically resistant to the virus will get sick, recover, and develop immunity, while people who are sensitive to the virus will need drugs and vaccines, which will have to be researched and developed if they are to recover. If the pandemic does not stop, in a few decades it is anticipated that SARS-CoV-2 will become as safe as the four non-severe acute respiratory syndrome human coronaviruses (HCoV-NL63, HCoV-HKU1, HCoV-OC43, and HCoV-229E) currently circulating but causing low mortality in the human population.
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24
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Al-Bari AA. Facts and Myths: Efficacies of Repurposing Chloroquine and Hydroxychloroquine for the Treatment of COVID-19. Curr Drug Targets 2020; 21:1703-1721. [PMID: 32552642 DOI: 10.2174/1389450121666200617133142] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/22/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023]
Abstract
The emergence of coronavirus disease 2019 (COVID-19) is caused by the 2019 novel coronavirus (2019-nCoV). The 2019-nCoV first broke out in Wuhan and subsequently spread worldwide owing to its extreme transmission efficiency. The fact that the COVID-19 cases and mortalities are reported globally and the WHO has declared this outbreak as the pandemic, the international health authorities have focused on rapid diagnosis and isolation of patients as well as search for therapies able to counter the disease severity. Due to the lack of known specific, effective and proven therapies as well as the situation of public-health emergency, drug repurposing appears to be the best armour to find a therapeutic solution against 2019-nCoV infection. Repurposing anti-malarial drugs and chloroquine (CQ)/ hydroxychloroquine (HCQ) have shown efficacy to inhibit most coronaviruses, including SARS-CoV-1 coronavirus. These CQ analogues have shown potential efficacy to inhibit 2019-nCoV in vitro that leads to focus several future clinical trials. This review discusses the possible effective roles and mechanisms of CQ analogues for interfering with the 2019-nCoV replication cycle and infection.
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Affiliation(s)
- Abdul Alim Al-Bari
- Department of Pharmacy, University of Rajshahi, Rajshahi-6205, Bangladesh
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25
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Kaslow DC. Certainty of success: three critical parameters in coronavirus vaccine development. NPJ Vaccines 2020; 5:42. [PMID: 32509338 PMCID: PMC7248068 DOI: 10.1038/s41541-020-0193-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/07/2020] [Indexed: 01/24/2023] Open
Abstract
Vaccines for 17 viral pathogens have been licensed for use in humans. Previously, two critical biological parameters of the pathogen and the host–pathogen interaction—incubation period and broadly protective, relative immunogenicity—were proposed to account for much of the past successes in vaccine development, and to be useful in estimating the “certainty of success” of developing an effective vaccine for viral pathogens for which a vaccine currently does not exist. In considering the “certainty of success” in development of human coronavirus vaccines, particularly SARS-CoV-2, a third, related critical parameter is proposed—infectious inoculum intensity, at an individual-level, and force of infection, at a population-level. Reducing the infectious inoculum intensity (and force of infection, at a population-level) is predicted to lengthen the incubation period, which in turn is predicted to reduce the severity of illness, and increase the opportunity for an anamnestic response upon exposure to the circulating virus. Similarly, successfully implementing individual- and population-based behaviors that reduce the infectious inoculum intensity and force of infection, respectively, while testing and deploying COVID-19 vaccines is predicted to increase the “certainty of success” of demonstrating vaccine efficacy and controlling SARS-CoV-2 infection, disease, death, and the pandemic itself.
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Affiliation(s)
- David C Kaslow
- PATH, 2201 Westlake Avenue, Suite 200, Seattle, WA 98121 USA
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26
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Khan SA, Zia K, Ashraf S, Uddin R, Ul-Haq Z. Identification of chymotrypsin-like protease inhibitors of SARS-CoV-2 via integrated computational approach. J Biomol Struct Dyn 2020; 39:2607-2616. [PMID: 32238094 DOI: 10.1080/07391102.2020.1751298] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Recently, the world has witnessed outbreak of a novel Coronavirus (SARS-CoV-2), the virus which initially emerged in Wuhan, China has now made its way to a large part of the world, resulting in a public emergency of international concern. The functional importance of Chymotrypsin-like protease (3CLpro) in viral replication and maturation turns it into an attractive target for the development of effective antiviral drugs against SARS and other coronaviruses. At present, there is no standard drug regime nor any vaccine available against the infection. The rapid development and identification of efficient interventions against SARS-CoV-2 remains a major challenge. Based on the available knowledge of closely related coronavirus and their safety profiles, repurposing of existing antiviral drugs and screening of available databases is considered a near term strategic and economic way to contain the SARS-CoV-2 pandemic. Herein, we applied computational drug design methods to identify Chymotrypsin-like protease inhibitors from FDA approved antiviral drugs and our in-house database of natural and drug-like compounds of synthetic origin. As a result three FDA approved drugs (Remdesivir, Saquinavir and Darunavir) and two natural compounds (. flavone and coumarine derivatives) were identified as promising hits. Further, MD simulation and binding free energy calculations were performed to evaluate the dynamic behavior, stability of protein-ligand contact, and binding affinity of the hit compounds. Our results indicate that the identified compounds can inhibit the function of Chymotrypsin-like protease (3CLpro) of Coronavirus. Considering the severity of the spread of coronavirus, the current study is in-line with the concept of finding the new inhibitors against the vital pathway of the corona virus to expedite the process of drug discovery.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Salman Ali Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Komal Zia
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Sajda Ashraf
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Reaz Uddin
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Zaheer Ul-Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan.,H.E.J Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
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27
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Niu J, Shen L, Huang B, Ye F, Zhao L, Wang H, Deng Y, Tan W. Non-invasive bioluminescence imaging of HCoV-OC43 infection and therapy in the central nervous system of live mice. Antiviral Res 2019; 173:104646. [PMID: 31705922 PMCID: PMC7114176 DOI: 10.1016/j.antiviral.2019.104646] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/29/2019] [Accepted: 11/04/2019] [Indexed: 11/27/2022]
Abstract
Human coronaviruses (HCoVs) are important pathogens that cause upper respiratory tract infections and have neuroinvasive abilities; however, little is known about the dynamic infection process of CoVs in vivo, and there are currently no specific antiviral drugs to prevent or treat HCoV infection. Here, we verified the replication ability and pathogenicity of a reporter HCoV-OC43 strain expressing Renilla luciferase (Rluc; rOC43-ns2DelRluc) in mice with different genetic backgrounds (C57BL/6 and BALB/c). Additionally, we monitored the spatial and temporal progression of HCoV-OC43 through the central nervous system (CNS) of live BALB/c mice after intranasal or intracerebral inoculation with rOC43-ns2DelRluc. We found that rOC43-ns2DelRluc was fatal to suckling mice after intranasal inoculation, and that viral titers and Rluc expression were detected in the brains and spinal cords of mice infected with rOC43-ns2DelRluc. Moreover, viral replication was initially observed in the brain by non-invasive bioluminescence imaging before the infection spread to the spinal cord of BALB/c mice, consistent with its tropism in the CNS. Furthermore, the Rluc readout correlated with the HCoV replication ability and protein expression, which allowed quantification of antiviral activity in live mice. Additionally, we validated that chloroquine strongly inhibited rOC43-ns2DelRluc replication in vivo. These results provide new insights into the temporal and spatial dissemination of HCoV-OC43 in the CNS, and our methods provide an extremely sensitive platform for evaluating the efficacy of antiviral therapies to treat neuroinvasive HCoVs in live mice. We verified the pathogenicity of a reporter HCoV-OC43 strain expressing Renilla luciferase (rOC43-ns2DelRluc) in mice. HCoV-OC43 spatio-temporal progression in CNS of mice was monitored by non-invasive bioluminescence imaging (BLI). Chloroquine was validated strongly inhibited rOC43-ns2DelRluc replication in in live mice. rOC43-ns2DelRluc-based BLI was reported as a promising platform for non-invasively screening antiviral compounds in vivo.
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Affiliation(s)
- Junwei Niu
- Key Laboratory of Biosafety, National Health Commissions, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Liang Shen
- Department of Clinical Laboratory, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Hubei Province, Xiangyang, 441021, China; Key Laboratory of Molecular Medicine, Medical College, Hubei University of Arts and Science, Xiangyang, 441053, China
| | - Baoying Huang
- Key Laboratory of Biosafety, National Health Commissions, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Fei Ye
- Key Laboratory of Biosafety, National Health Commissions, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Li Zhao
- Key Laboratory of Biosafety, National Health Commissions, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Huijuan Wang
- Key Laboratory of Biosafety, National Health Commissions, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Yao Deng
- Key Laboratory of Biosafety, National Health Commissions, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China
| | - Wenjie Tan
- Key Laboratory of Biosafety, National Health Commissions, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 102206, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, China.
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28
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Complete Genome Sequence of Human Coronavirus NL63 CN0601/14, First Isolated in South Korea. GENOME ANNOUNCEMENTS 2018; 6:6/12/e00152-18. [PMID: 29567734 PMCID: PMC5864941 DOI: 10.1128/genomea.00152-18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We report here the complete genome sequence of the human coronavirus NL63 CN0601/14 strain, first isolated from South Korea. It contains 18-nucleotide discontinuous deletions of the open reading frame 1a (ORF1a) and spike regions. This study will aid in our understanding of the complete genome sequences of isolated coronaviruses in South Korea.
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29
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Abstract
The four endemic human coronaviruses HCoV-229E, -NL63, -OC43, and -HKU1 contribute a considerable share of upper and lower respiratory tract infections in adults and children. While their clinical representation resembles that of many other agents of the common cold, their evolutionary histories, and host associations could provide important insights into the natural history of past human pandemics. For two of these viruses, we have strong evidence suggesting an origin in major livestock species while primordial associations for all four viruses may have existed with bats and rodents. HCoV-NL63 and -229E may originate from bat reservoirs as assumed for many other coronaviruses, but HCoV-OC43 and -HKU1 seem more likely to have speciated from rodent-associated viruses. HCoV-OC43 is thought to have emerged from ancestors in domestic animals such as cattle or swine. The bovine coronavirus has been suggested to be a possible ancestor, from which HCoV-OC43 may have emerged in the context of a pandemic recorded historically at the end of the 19th century. New data suggest that HCoV-229E may actually be transferred from dromedary camels similar to Middle East respiratory syndrome (MERS) coronavirus. This scenario provides important ecological parallels to the present prepandemic pattern of host associations of the MERS coronavirus.
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Affiliation(s)
- Victor M Corman
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, Berlin, Germany; German Center for Infection Research (DZIF), Berlin, Germany
| | - Doreen Muth
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, Berlin, Germany; German Center for Infection Research (DZIF), Berlin, Germany
| | - Daniela Niemeyer
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, Berlin, Germany
| | - Christian Drosten
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, Berlin, Germany; German Center for Infection Research (DZIF), Berlin, Germany.
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30
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Ogimi C, Englund JA, Bradford MC, Qin X, Boeckh M, Waghmare A. Characteristics and Outcomes of Coronavirus Infection in Children: The Role of Viral Factors and an Immunocompromised State. J Pediatric Infect Dis Soc 2018; 8:21-28. [PMID: 29447395 PMCID: PMC6437838 DOI: 10.1093/jpids/pix093] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 01/23/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Immunocompromised children might be predisposed to serious infections from human coronaviruses (HCoVs), including strains OC43, NL63, HKU1, and 229E; however, the virologic and clinical features of HCoV infection in immunocompromised children have not been compared to those in nonimmunocompromised children. METHODS We retrospectively analyzed a cohort of children who presented to Seattle Children's Hospital and in whom HCoV was detected by a multiplex respiratory polymerase chain reaction assay of a nasal sample between October 2012 and March 2016. Lower respiratory tract disease (LRTD) was defined as possible or definite infiltrate seen in chest imaging, need for oxygen, or abnormal lung examination in conjunction with a physician diagnosis of LRTD. We used logistic regression modeling to evaluate risk factors for LRTD and LRTD that necessitated oxygen use (severe LRTD), including an immunocompromised state, in children with HCoV infection. RESULTS The median ages of 85 immunocompromised and 1152 nonimmunocompromised children with HCoV infection were 6.3 and 1.6 years, respectively. The prevalence of LRTD and of severe LRTD did not differ greatly between the immunocompromised and nonimmunocompromised patients (22% vs 26% [LRTD] and 15% vs 11% [severe LRTD], respectively); however, in a multivariable model, an immunocompromised state was associated with an increased likelihood of severe LRTD (adjusted odds ratio, 2.5 [95% confidence interval, 1.2-4.9]; P = .01). Younger age, having an underlying pulmonary disorder, and the presence of respiratory syncytial virus were also associated with LRTD or severe LRTD in multivariable models. The risks of LRTD or severe LRTD did not differ among the children with different HCoV strains. CONCLUSIONS The presence of a copathogen and host factors, including an immunocompromised state, were associated with increased risk for severe LRTD. Recognizing risk factors for severe respiratory illness might assist in risk stratification.
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Affiliation(s)
- Chikara Ogimi
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington,Department of Pediatrics, University of Washington, Seattle,Pediatric Infectious Diseases Division, Seattle Children’s Hospital, Washington
| | - Janet A Englund
- Department of Pediatrics, University of Washington, Seattle,Pediatric Infectious Diseases Division, Seattle Children’s Hospital, Washington
| | - Miranda C Bradford
- Children’s Core for Biomedical Statistics, Center for Clinical and Translational Research, Seattle Children’s Research Institute, Washington
| | - Xuan Qin
- Department of Laboratory Medicine, University of Washington, Seattle,Microbiology Laboratory, Seattle Children’s Hospital, Washington
| | - Michael Boeckh
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington,Department of Medicine, University of Washington, Seattle,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Alpana Waghmare
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington,Department of Pediatrics, University of Washington, Seattle,Pediatric Infectious Diseases Division, Seattle Children’s Hospital, Washington,Correspondence: A. Waghmare, MD, Pediatric Infectious Diseases Division, Seattle Children’s Hospital, 4800 Sand Point Way NE, MA 7.226, Seattle, WA 98105 ()
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Abstract
The human coronaviruses have been shown to be a major player in clinical microbiology and frequently occur as pathogens responsible for mild to severe respiratory infections. Moreover, two of the most dangerous viral respiratory infections are caused by novel coronaviruses, namely, the SARS and the MERS coronavirus. This chapter briefly summarizes the most important facts and knowledge required for the appropriate laboratory diagnostics of infections caused by the human coronaviruses.
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Affiliation(s)
- Yi-Wei Tang
- Departments of Laboratory Medicine and Internal Medicine, Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - Charles W. Stratton
- Department of Pathology, Microbiology and Immunology and Medicine, Vanderbilt University Medical Center, Nashville, TN USA
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Abstract
Human rhinovirus (HRV) and coronavirus (HCoV) infections are associated with both upper respiratory tract illness (“the common cold”) and lower respiratory tract illness (pneumonia). New species of HRVs and HCoVs have been diagnosed in the past decade. More sensitive diagnostic tests such as reverse transcription-polymerase chain reaction have expanded our understanding of the role these viruses play in both immunocompetent and immunosuppressed hosts. Recent identification of severe acute respiratory syndrome and Middle East respiratory syndrome viruses causing serious respiratory illnesses has led to renewed efforts for vaccine development. The role these viruses play in patients with chronic lung disease such as asthma makes the search for antiviral agents of increased importance.
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Affiliation(s)
- Stephen B Greenberg
- Department of Medicine, Ben Taub Hospital, Baylor College of Medicine, Houston, Texas
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Everts M, Cihlar T, Bostwick JR, Whitley RJ. Accelerating Drug Development: Antiviral Therapies for Emerging Viruses as a Model. Annu Rev Pharmacol Toxicol 2016; 57:155-169. [PMID: 27483339 DOI: 10.1146/annurev-pharmtox-010716-104533] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Drug discovery and development is a lengthy and expensive process. Although no one, simple, single solution can significantly accelerate this process, steps can be taken to avoid unnecessary delays. Using the development of antiviral therapies as a model, we describe options for acceleration that cover target selection, assay development and high-throughput screening, hit confirmation, lead identification and development, animal model evaluations, toxicity studies, regulatory issues, and the general drug discovery and development infrastructure. Together, these steps could result in accelerated timelines for bringing antiviral therapies to market so they can treat emerging infections and reduce human suffering.
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Affiliation(s)
- Maaike Everts
- Department of Pediatrics, Division of Infectious Diseases, University of Alabama, Birmingham, Alabama 35233; ,
| | - Tomas Cihlar
- Department of Biology, Gilead Sciences, Inc., Foster City, California 94404;
| | - J Robert Bostwick
- Drug Discovery Division, Southern Research, Birmingham, Alabama 35205;
| | - Richard J Whitley
- Department of Pediatrics, Division of Infectious Diseases, University of Alabama, Birmingham, Alabama 35233; ,
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Yip CCY, Lam CSF, Luk HKH, Wong EYM, Lee RA, So LY, Chan KH, Cheng VCC, Yuen KY, Woo PCY, Lau SKP. A six-year descriptive epidemiological study of human coronavirus infections in hospitalized patients in Hong Kong. Virol Sin 2016; 31:41-8. [PMID: 26920709 PMCID: PMC7090542 DOI: 10.1007/s12250-016-3714-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 02/11/2016] [Indexed: 11/25/2022] Open
Abstract
We conducted a six-year epidemiological study on human coronaviruses (HCoVs) circulating in Hong Kong, using 8275 nasopharyngeal samples from patients with acute respiratory tract infections. HCoVs were detected in 77 (0.93%) of the samples by a pan-HCoV RT-PCR assay. The most frequently detected HCoV species was HCoV-OC43 (0.58%), followed by HCoV-229E (0.15%), HCoV-HKU1 (0.13%) and HCoV-NL63 (0.07%). HCoVs were detected throughout the study period (September 2008–August 2014), with the highest detection rate from September 2010 to August 2011 (22/1500, 1.47%). Different seasonal patterns of each HCoV species in Hong Kong were noted. HCoV-OC43 was predominant in the fall and winter, whereas HCoV-HKU1 showed peak activity in winter, with a few cases occurred in spring and summer. HCoV-229E mainly occurred in winter and spring, while HCoV-NL63 was predominant in summer and autumn. HCoVs most commonly infect the elderly and young children, with median age of 79.5 years (range, 22 days to 95 years). Intriguingly, the detection rate of HCoV-OC43 in the age group of > 80 years (26/2380, 1.09%) was significantly higher than that in the age group of 0–10 years (12/2529, 0.47%) (P < 0.05). These data provides new insight into the epidemiology of coronaviruses.![]()
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Affiliation(s)
- Cyril C Y Yip
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China
| | - Carol S F Lam
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China
| | - Hayes K H Luk
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China
| | - Emily Y M Wong
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China
| | - Rodney A Lee
- Department of Microbiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - Lok-Yee So
- Department of Paediatrics and Adolescent Medicine, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - Kwok-Hung Chan
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China
| | - Vincent C C Cheng
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China
| | - Kwok-Yung Yuen
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China.,Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR, China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong SAR, China
| | - Patrick C Y Woo
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China. .,Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR, China. .,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong SAR, China.
| | - Susanna K P Lau
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR, China. .,Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR, China. .,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong SAR, China.
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Galante O, Avni YS, Fuchs L, Ferster OA, Almog Y. Coronavirus NL63-induced Adult Respiratory Distress Syndrome. Am J Respir Crit Care Med 2016; 193:100-1. [DOI: 10.1164/rccm.201506-1239le] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Huang SH, Su MC, Tien N, Huang CJ, Lan YC, Lin CS, Chen CH, Lin CW. Epidemiology of human coronavirus NL63 infection among hospitalized patients with pneumonia in Taiwan. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2015; 50:763-770. [PMID: 26746130 PMCID: PMC7105056 DOI: 10.1016/j.jmii.2015.10.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/18/2015] [Accepted: 10/22/2015] [Indexed: 11/15/2022]
Abstract
Background/Purpose Human coronavirus (HCoV) NL63 is recognized in association with upper or lower respiratory tract illnesses in children. This study surveyed the prevalence of HCoV-NL63 and influenza viruses in patients with influenza-like illness in Taiwan during 2010–2011. Methods Throat samples from 107 hospitalized patients with pneumonia and 175 outpatients with influenza-like illness were examined using real-time polymerase chain reaction assays with virus-specific primers, and then virus-positive specimens were confirmed by sequencing the polymerase chain reaction products. Results HCoV-NL63 infection was identified in 8.4% (9/107) of hospitalized patients with pneumonia, but not found in outpatients with influenza-like illness. Age distribution of HCoV-NL63 infection in hospitalized patients with pneumonia indicated that the group aged 16–25 years (20%) had the highest positive rate compared with the other groups, and exhibited a similar age-specific pattern to influenza A/H1N1 infection, but not influenza A/H3N2 and B infections in hospitalized patients. Seasonal prevalence of HCoV-NL63 infection was late winter, overlapping the highest peak of the influenza A/H1N1 epidemic during December 2010 to March 2011 in Taiwan. Co-infection of HCoV-NL63 and influenza A/H1N1 was detected in three hospitalized patients. Clinical manifestation analysis indicated that the main symptoms for HCoV-NL63 infection included fever (88.9%), cough (77.8%), and pneumonia (100%). Co-infection caused significantly higher rates of breathing difficulties, cough, and sore throat than those of single infection with HCoV-NL63 and influenza A/H1N1. Phylogenetic analysis indicated a low level of heterogeneity between Taiwan and global HCoV-NL63 strains. Conclusion Understanding epidemiology of HCoV-NL63 in Taiwan provides an insight for worldwide surveillance of HCoV-NL63 infection.
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Affiliation(s)
- Su-Hua Huang
- Department of Biotechnology, Asia University, Wufeng, Taichung, Taiwan
| | - Mei-Chi Su
- Department of Laboratory Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Ni Tien
- Department of Laboratory Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chien-Jhen Huang
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan
| | - Yu-Ching Lan
- Department of Health Risk Management, School of Public, China Medical University, Taichung, Taiwan
| | - Chen-Sheng Lin
- Division of Gastroenterology, Kuang Tien General Hospital, Taichung, Taiwan
| | - Chao-Hsien Chen
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan
| | - Cheng-Wen Lin
- Department of Biotechnology, Asia University, Wufeng, Taichung, Taiwan; Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan.
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38
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Gorse GJ, Donovan MM, Patel GB, Balasubramanian S, Lusk RH. Coronavirus and Other Respiratory Illnesses Comparing Older with Young Adults. Am J Med 2015; 128:1251.e11-20. [PMID: 26087047 PMCID: PMC7093847 DOI: 10.1016/j.amjmed.2015.05.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 05/13/2015] [Accepted: 05/19/2015] [Indexed: 11/01/2022]
Abstract
BACKGROUND Study of human coronavirus and other virus-associated respiratory illnesses is needed to describe their clinical effects on chronically ill, older adults. METHODS A prospective study during 2009 to 2013 clinically assessed acute respiratory illnesses soon after onset and 3 to 4 weeks later in patients aged ≥60 years with chronic lung and heart diseases (group 1, 100 subjects) and healthy adults aged 18 to 40 years (group 2, 101 subjects). Respiratory secretions were tested for nucleic acids of a panel of respiratory viruses. An increase in antibody titer was assessed for 4 coronavirus strains. RESULTS Virus-associated illnesses (29 [39.1%] of 74 illnesses in group 1 and 59 [48.7%] of 121 illnesses in group 2) occurred in all calendar quarters, most commonly in the first and fourth quarters. Coronaviruses (group 1: 14 [18.9%] illnesses; group 2: 26 [21.5%] illnesses) and enteroviruses/rhinoviruses (group 1: 14 [18.9%] illnesses; group 2: 37 [30.6%] illnesses) were most common. Virus co-infections occurred in 10 illnesses. Illnesses with 9 to 11 symptoms were more common in group 1 (17 [23.0%]) than in group 2 (15 [12.4%]) (P < .05). Compared with group 2, more group 1 subjects reported dyspnea, more severe disease of longer duration, and treatment for acute illness with prednisone and antibiotics. Coronavirus-associated illnesses (percent of illnesses, group 1 vs group 2) were characterized by myalgias (21% vs 68%, P < .01), chills (50% vs 52%), dyspnea (71% vs 24%, P < .01), headache (64% vs 72%), malaise (64% vs 84%), cough (86% vs 68%), sputum production (86% vs 60%), sore throat (64% vs 80%), and nasal congestion (93% vs 96%). CONCLUSIONS Respiratory illnesses were commonly associated with coronaviruses and enteroviruses/rhinoviruses affecting chronically ill, older patients more than healthy, young adults.
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Affiliation(s)
- Geoffrey J Gorse
- Section of Infectious Diseases, VA St Louis Health Care System, and Division of Infectious Diseases, Allergy & Immunology, Saint Louis University School of Medicine, St Louis, Mo.
| | - Mary M Donovan
- Research Service, VA St Louis Health Care System, and Division of Infectious Diseases, Allergy & Immunology, Saint Louis University School of Medicine, St Louis, Mo
| | - Gira B Patel
- Research Service, VA St Louis Health Care System, and Division of Infectious Diseases, Allergy & Immunology, Saint Louis University School of Medicine, St Louis, Mo
| | - Sumitra Balasubramanian
- Research Service, VA St Louis Health Care System, and Washington University in St Louis, St Louis, Mo
| | - Rodney H Lusk
- Section of Infectious Diseases, VA St Louis Health Care System, and Division of Infectious Diseases, Allergy & Immunology, Saint Louis University School of Medicine, St Louis, Mo
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39
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Gralinski LE, Baric RS. Molecular pathology of emerging coronavirus infections. J Pathol 2015; 235:185-95. [PMID: 25270030 PMCID: PMC4267971 DOI: 10.1002/path.4454] [Citation(s) in RCA: 230] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 09/25/2014] [Indexed: 12/11/2022]
Abstract
Respiratory viruses can cause a wide spectrum of pulmonary diseases, ranging from mild, upper respiratory tract infections to severe and life-threatening lower respiratory tract infections, including the development of acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). Viral clearance and subsequent recovery from infection require activation of an effective host immune response; however, many immune effector cells may also cause injury to host tissues. Severe acute respiratory syndrome (SARS) coronavirus and Middle East respiratory syndrome (MERS) coronavirus cause severe infection of the lower respiratory tract, with 10% and 35% overall mortality rates, respectively; however, >50% mortality rates are seen in the aged and immunosuppressed populations. While these viruses are susceptible to interferon treatment in vitro, they both encode numerous genes that allow for successful evasion of the host immune system until after high virus titres have been achieved. In this review, we discuss the importance of the innate immune response and the development of lung pathology following human coronavirus infection.
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Affiliation(s)
- Lisa E Gralinski
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC, USA
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Kuchar E, Miśkiewicz K, Nitsch-Osuch A, Szenborn L. Pathophysiology of Clinical Symptoms in Acute Viral Respiratory Tract Infections. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 857:25-38. [PMID: 25786400 PMCID: PMC7121097 DOI: 10.1007/5584_2015_110] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In this article we discuss the pathophysiology of common symptoms of acute viral respiratory infections (e.g., sneezing, nasal discharge, sore throat, cough, muscle pains, malaise, and mood changes). Since clinical symptoms are not sufficient to determine the etiology of viral respiratory tract infections, we believe that the host defense mechanisms are critical for the symptomatology. Consequently, this review of literature is focused on the pathophysiology of respiratory symptoms regardless of their etiology. We assume that despite a high prevalence of symptoms of respiratory infection, their pathogenesis is not widely known. A better understanding of the symptoms' pathogenesis could improve the quality of care for patients with respiratory tract infections.
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Affiliation(s)
- E Kuchar
- Department of Pediatric Infectious Diseases, Wroclaw Medical University, 2A Chalubinskiego Str., 50-368, Wroclaw, Poland,
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42
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Abstract
Macropinocytosis is exploited by many pathogens for entry into cells. Coronaviruses (CoVs) such as severe acute respiratory syndrome (SARS) CoV and Middle East respiratory syndrome CoV are important human pathogens; however, macropinocytosis during CoV infection has not been investigated. We demonstrate that the CoVs SARS CoV and murine hepatitis virus (MHV) induce macropinocytosis, which occurs late during infection, is continuous, and is not associated with virus entry. MHV-induced macropinocytosis results in vesicle internalization, as well as extended filopodia capable of fusing with distant cells. MHV-induced macropinocytosis requires fusogenic spike protein on the cell surface and is dependent on epidermal growth factor receptor activation. Inhibition of macropinocytosis reduces supernatant viral titers and syncytia but not intracellular virus titers. These results indicate that macropinocytosis likely facilitates CoV infection through enhanced cell-to-cell spreading. Our studies are the first to demonstrate virus use of macropinocytosis for a role other than entry and suggest a much broader potential exploitation of macropinocytosis in virus replication and host interactions. Importance: Coronaviruses (CoVs), including severe acute respiratory syndrome (SARS) CoV and Middle East respiratory syndrome CoV, are critical emerging human pathogens. Macropinocytosis is induced by many pathogens to enter host cells, but other functions for macropinocytosis in virus replication are unknown. In this work, we show that CoVs induce a macropinocytosis late in infection that is continuous, independent from cell entry, and associated with increased virus titers and cell fusion. Murine hepatitis virus macropinocytosis requires a fusogenic virus spike protein and signals through the epidermal growth factor receptor and the classical macropinocytosis pathway. These studies demonstrate CoV induction of macropinocytosis for a purpose other than entry and indicate that viruses likely exploit macropinocytosis at multiple steps in replication and pathogenesis.
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Cho CH, Lee CK, Nam MH, Yoon SY, Lim CS, Cho Y, Kim YK. Evaluation of the AdvanSure™ real-time RT-PCR compared with culture and Seeplex RV15 for simultaneous detection of respiratory viruses. Diagn Microbiol Infect Dis 2014; 79:14-8. [PMID: 24582583 PMCID: PMC7132754 DOI: 10.1016/j.diagmicrobio.2014.01.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 01/19/2014] [Accepted: 01/23/2014] [Indexed: 11/29/2022]
Abstract
Recently, AdvanSure™ kit based on multiplex real-time PCR was developed for simultaneous detection of 14 respiratory viruses (RVs). We compared the performance of AdvanSure with those of Seeplex® RV 15 ACE and culture by determining their sensitivities and specificities against a composite reference standard. Four hundred thirty-seven respiratory samples were tested by modified shell vial culture method, RV 15 ACE, and AdvanSure. One hundred fourteen samples (26.2%) out of 437 samples were positive by culture, while additional 91 (20.8%) were positive by AdvanSure or RV15. One hundred twelve of 114 culture-positive samples were positive by AdvanSure except 2 samples (1 adenovirus, 1 respiratory syncytial virus [RSV]). Overall, the sensitivities of culture, RV15, and AdvanSure were 74.5%, 89.8%, and 95.1%, respectively. Sensitivities of culture, RV15, and AdvanSure for each virus tested were as follows: 91/100/96% for influenza A, 60/0/100% for influenza B, 63/95/97% for RSV, 69/81/89% for adenovirus, and 87/93/93% for parainfluenza virus. For viruses not covered by culture, sensitivities of RV15 and AdvanSure were as follows: 77/88% for rhinovirus, 100/100% for coronavirus OC43, 40/100% for coronavirus 229E/NL63, 13/100% for metapneumovirus, and 44/100% for bocavirus. The overall specificities of culture, RV15, and AdvanSure were 100/98.9/99.5%, respectively. Of 45 coinfected specimens, AdvanSure detected 41 specimens (91.1%) as coinfected, while RV15 detected 27 specimens (60.0%) as coinfected. AdvanSure assay demonstrated exquisite performance for the detection of RVs and will be a valuable tool for the management of RV infection.
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Affiliation(s)
- Chi Hyun Cho
- Department of laboratory medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Chang Kyu Lee
- Department of laboratory medicine, College of Medicine, Korea University, Seoul, Republic of Korea.
| | - Myung-Hyun Nam
- Department of laboratory medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Soo-Young Yoon
- Department of laboratory medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Chae Seung Lim
- Department of laboratory medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Yunjung Cho
- Department of laboratory medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Young Kee Kim
- Department of laboratory medicine, College of Medicine, Korea University, Seoul, Republic of Korea
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Abstract
Otitis media is a major cause of morbidity in 80% of all children less than 3 years of age and often goes undiagnosed in the general population. There is evidence to suggest that the incidence of otitis media is increasing. The major cause of otitis media is infection of the middle ear with microbes from the nasopharynx. The anatomical orientation of the eustachian tube, in association with a number of risk factors, predisposes infants and young children to the infection. Bacteria are responsible for approximately 70% of cases of acute otitis media, with Streptococcus pneumoniae, nontypeable Haemophilus influenzae and Moraxella catarrhalis predominating as the causative agents. The respiratory viruses, respiratory syncytial virus, rhinovirus, parainfluenza and influenza, account for 30% of acute otitis media cases. Over the past decade, there has been a profound increase in the reported resistance to antibiotics, which, with increased disease burden, has focussed attention on vaccine development for otitis media. A polymicrobial formulation containing antigens from all major pathogens would have the greatest potential to deliver a sustained reduction in the disease burden globally. The disappointing outcomes for otitis media seen with the polysaccharide pneumococcal conjugate vaccine have raised major challenges for the vaccination strategy. Clearly, more knowledge is required concerning immune mechanisms in the middle ear, as well as vaccine formulations containing antigens that are more representative of the polymicrobial nature of the disease. Antigens that have been extensively tested in animal models are now available for testing in human subjects.
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Affiliation(s)
- Allan W Cripps
- Griffith University, School of Medicine, Gold Coast Campus, PMB 50, Gold Coast, MC, QLD, 9726, Australia.
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Cabeça TK, Granato C, Bellei N. Epidemiological and clinical features of human coronavirus infections among different subsets of patients. Influenza Other Respir Viruses 2013; 7:1040-7. [PMID: 23462106 PMCID: PMC4634278 DOI: 10.1111/irv.12101] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2013] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Epidemiological and clinical data of human coronaviruses (HCoVs) infections are restricted to span 1-3 years at most. We conducted a comprehensive 9-year study on HCoVs by analyzing 1137 respiratory samples from four subsets of patients (asymptomatic, general community, with comorbidities, and hospitalized) in São Paulo, Brazil. METHODS A pan-coronavirus RT-PCR screening assay was performed, followed by species-specific real-time RT-PCR monoplex assays. RESULTS Human coronaviruses were detected in 88 of 1137 (7.7%) of the samples. The most frequently detected HCoV species were NL63 (50.0%) and OC43 (27.3%). Patients with comorbidities presented the highest risk of acquiring coronavirus infection (odds ratio=4.17; 95% confidence interval=1.9-9.3), and children with heart diseases revealed a significant HCoV infection presence. Dyspnea was more associated with HCoV-229E infections (66.6%), and cyanosis was reported only in HCoV-OC43 infections. There were interseasonal differences in the detection frequencies, with HCoV-229E being predominant in the year 2004 (61.5%) and HCoV-NL63 (70.8%) in 2008. CONCLUSIONS Our data provide a novel insight into the epidemiology and clinical knowledge of HCoVs among different subsets of patients, revealing that these viruses may cause more than mild respiratory tract disease.
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Affiliation(s)
- Tatiane K Cabeça
- Laboratory of Clinical Virology, Discipline of Infectology, Department of Medicine, Federal University of São Paulo, Sao Paulo, Brazil
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Human Respiratory Syncytial Virus Infection and its Subgroups Among the Hospitalized Young Children With Acute Respiratory Infection. Jundishapur J Microbiol 2013. [DOI: 10.5812/jjm.6452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Curtis N, Finn A, Pollard AJ. Elucidation and clinical role of emerging viral respiratory tract infections in children. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 764:191-204. [PMID: 23654068 PMCID: PMC7123406 DOI: 10.1007/978-1-4614-4726-9_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 03/29/2024]
Abstract
Acute respiratory viral infections (ARVI's) are the most common infectious disease in humans. With the appearance of molecular techniques the recovery of viruses has dramatically increased. Nowadays virologists can quickly discriminate virological families and related viruses from emerging viruses and consequently identify novel viruses. Many new respiratory viruses have been identified in children in the past 15 years. In this review we shortly discuss novel respiratory viruses and their pathogenic role in pediatric respiratory disease. Advantages and drawbacks of the technique and our current knowledge will be discussed. We will conclude this review with a general discussion on the future role of molecular diagnostic virology in the clinic.
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Affiliation(s)
- Nigel Curtis
- Royal Children's Hospital, Dept. Pediatrics, University of Melbourne, Flemington Road, Parkville, 3052 Victoria Australia
| | - Adam Finn
- Institute of Child Life and Health, UBHT Education Centre, University of Bristol, Upper Maudlin Street, Bristol, BS28AE UK
| | - Andrew J. Pollard
- University of Oxford, Level 4,John Radcliffe Hospital, Oxford, OX3 9DU UK
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Jevšnik M, Uršič T, Zigon N, Lusa L, Krivec U, Petrovec M. Coronavirus infections in hospitalized pediatric patients with acute respiratory tract disease. BMC Infect Dis 2012; 12:365. [PMID: 23256846 PMCID: PMC3557153 DOI: 10.1186/1471-2334-12-365] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 12/18/2012] [Indexed: 11/16/2022] Open
Abstract
Background Acute viral respiratory infections are an important cause of morbidity and mortality in humans worldwide. The etiological backgrounds of these infections remain unconfirmed in most clinical cases. The aim of this study was to estimate the prevalence of human coronavirus infections in a series of children hospitalized with symptoms of acute respiratory tract disease in a one-year period in Slovenia. Methods The 664 specimens from 592 children under six years of age hospitalized at the University Children’s Hospital in Ljubljana were sent for the routine laboratory detection of respiratory viruses. Respiratory viruses were detected with a direct immunofluorescence assay and human coronaviruses were detected with a modified real-time RT–PCR. Results HCoV RNA was detected in 40 (6%, 95% CI: 4.3%–8.1%) of 664 samples. Of these specimens, 21/40 (52.5%) were identified as species HKU1, 7/40 (17.5%) as OC43, 6/40 (15%) as 229E, and 6/40 (15%) as NL63. Infection with HCoV occurred as a coinfection with one or more other viruses in most samples (70%). Of the HCoV-positive children, 70.3% had lower respiratory tract infections. Conclusion The results of our study show that HCoV are frequently detected human pathogens, often associated with other respiratory viruses and acute respiratory tract infections in hospitalized children. An association between age and the viral load was found. The highest viral load was detected in children approximately 10 months of age.
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Affiliation(s)
- Monika Jevšnik
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Zaloška 4, Ljubljana 1000, Slovenia.
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Milewska A, Ciejka J, Kaminski K, Karewicz A, Bielska D, Zeglen S, Karolak W, Nowakowska M, Potempa J, Bosch BJ, Pyrc K, Szczubialka K. Novel polymeric inhibitors of HCoV-NL63. Antiviral Res 2012. [PMID: 23201315 PMCID: PMC7114096 DOI: 10.1016/j.antiviral.2012.11.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The human coronavirus NL63 is generally classified as a common cold pathogen, though the infection may also result in severe lower respiratory tract diseases, especially in children, patients with underlying disease, and elderly. It has been previously shown that HCoV-NL63 is also one of the most important causes of croup in children. In the current manuscript we developed a set of polymer-based compounds showing prominent anticoronaviral activity. Polymers have been recently considered as promising alternatives to small molecule inhibitors, due to their intrinsic antimicrobial properties and ability to serve as matrices for antimicrobial compounds. Most of the antimicrobial polymers show antibacterial properties, while those with antiviral activity are much less frequent. A cationically modified chitosan derivative, N-(2-hydroxypropyl)-3-trimethylammonium chitosan chloride (HTCC), and hydrophobically-modified HTCC were shown to be potent inhibitors of HCoV-NL63 replication. Furthermore, both compounds showed prominent activity against murine hepatitis virus, suggesting broader anticoronaviral activity.
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Affiliation(s)
- Aleksandra Milewska
- Microbiology Department, Faculty of Biochemistry Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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Geller C, Varbanov M, Duval RE. Human coronaviruses: insights into environmental resistance and its influence on the development of new antiseptic strategies. Viruses 2012. [PMID: 23202515 PMCID: PMC3509683 DOI: 10.3390/v4113044] [Citation(s) in RCA: 246] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The Coronaviridae family, an enveloped RNA virus family, and, more particularly, human coronaviruses (HCoV), were historically known to be responsible for a large portion of common colds and other upper respiratory tract infections. HCoV are now known to be involved in more serious respiratory diseases, i.e. bronchitis, bronchiolitis or pneumonia, especially in young children and neonates, elderly people and immunosuppressed patients. They have also been involved in nosocomial viral infections. In 2002–2003, the outbreak of severe acute respiratory syndrome (SARS), due to a newly discovered coronavirus, the SARS-associated coronavirus (SARS-CoV); led to a new awareness of the medical importance of the Coronaviridae family. This pathogen, responsible for an emerging disease in humans, with high risk of fatal outcome; underline the pressing need for new approaches to the management of the infection, and primarily to its prevention. Another interesting feature of coronaviruses is their potential environmental resistance, despite the accepted fragility of enveloped viruses. Indeed, several studies have described the ability of HCoVs (i.e. HCoV 229E, HCoV OC43 (also known as betacoronavirus 1), NL63, HKU1 or SARS-CoV) to survive in different environmental conditions (e.g. temperature and humidity), on different supports found in hospital settings such as aluminum, sterile sponges or latex surgical gloves or in biological fluids. Finally, taking into account the persisting lack of specific antiviral treatments (there is, in fact, no specific treatment available to fight coronaviruses infections), the Coronaviridae specificities (i.e. pathogenicity, potential environmental resistance) make them a challenging model for the development of efficient means of prevention, as an adapted antisepsis-disinfection, to prevent the environmental spread of such infective agents. This review will summarize current knowledge on the capacity of human coronaviruses to survive in the environment and the efficacy of well-known antiseptic-disinfectants against them, with particular focus on the development of new methodologies to evaluate the activity of new antiseptic-disinfectants on viruses.
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Affiliation(s)
- Chloé Geller
- UMR 7565, SRSMC, Université de Lorraine-CNRS, Faculty of Pharmacy, 5 rue Albert Lebrun, BP 80403, 54001 Nancy Cedex, France.
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