1
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de Almeida Campos AC, Cicolo S, de Oliveira CM, Molina CV, Navas-Suárez PE, Poltronieri Dos Santos T, da Silveira VB, Barbosa CM, Baccarin RYA, Durigon EL, Góes LGB, Belli CB, Oliveira DBL. Potential outbreak by herpesvirus in equines: detection, clinical, and genetic analysis of equid gammaherpesvirus 2 (EHV-2). Braz J Microbiol 2023; 54:1137-1143. [PMID: 36705807 PMCID: PMC10234995 DOI: 10.1007/s42770-022-00890-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 12/10/2022] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Equid herpesvirus (EHV) commonly affects horses causing neurologic and respiratory symptoms beside spontaneous abortions, meaning huge economic losses for equine industry worldwide. In foals, the virus can facilitate secondary infections by Rhodococcus equi, important in morbidity and mortality in equines. A total of five genotypes of EHV were previously described in Brazil including EHV-1, EHV-2, EHV-3, EHV-4, and EHV-5. EHV-2 genotype had only been previously described in Brazil in asymptomatic animals. We report the investigation of the dead of 11 foals in Middle-west region of Brazil showing respiratory and neurological symptoms, as well as several abortions in mares from the same farm. METHODS Clinical and laboratory exams were performed in this case study. Lung, whole blood, serum, and plasma samples were analyzed by necroscopic and histopathologic techniques followed by molecular assays (conventional and qPCR and Sanger sequencing). RESULTS AND CONCLUSION Laboratory exams revealed neutrophilia leukocytosis. Necroscopic and histopathologic findings were suppurative bronchopneumonia and ulcerative enteritis. Molecular assays point to the absence of the bacteria Rhodococcus equi and other viruses (including other EHV). The presence of EHV-2 DNA was confirmed by sequencing in serum sample from one foal. This is the first confirmed outbreak of EHV-2 causing disease in Brazilian horses with confirmed presence of the virus, and which highlight the important role of EHV-2 in equine respiratory disease and spontaneous abortions in equid in Brazil.
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Affiliation(s)
- Angélica Cristine de Almeida Campos
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil.
- Clinical and Molecular Virology Research Team, Scientific Platform Pasteur-USP (SPPU), SP, 05508-020, São Paulo, Brazil.
| | - Sofia Cicolo
- Department of Surgery, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo-USP, SP, 05508-270, São Paulo, Brazil
| | - Cairo Monteiro de Oliveira
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil
| | - Camila Vieira Molina
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil
- Clinical and Molecular Virology Research Team, Scientific Platform Pasteur-USP (SPPU), SP, 05508-020, São Paulo, Brazil
| | - Pedro Enrique Navas-Suárez
- Wildlife Comparative Pathology Laboratory-LAPCOM, Faculdade de Medicina Veterinária e Zootecnia da, Universidade de São Paulo-USP, SP, 05508-270, São Paulo, Brazil
- Wildlife Disease Association-WDA, Associate member, 66044-7065, Lawrence-KS, United States
| | - Thais Poltronieri Dos Santos
- Department of Internal Medicine, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo-USP, SP, 05508-270, São Paulo, Brazil
| | - Vanessa Barbosa da Silveira
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil
| | - Carla Meneguin Barbosa
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil
| | - Raquel Yvonne Arantes Baccarin
- Department of Internal Medicine, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo-USP, SP, 05508-270, São Paulo, Brazil
| | - Edison Luiz Durigon
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil
| | - Luiz Gustavo Bentim Góes
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil
- Clinical and Molecular Virology Research Team, Scientific Platform Pasteur-USP (SPPU), SP, 05508-020, São Paulo, Brazil
| | - Carla Bargi Belli
- Department of Internal Medicine, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo-USP, SP, 05508-270, São Paulo, Brazil.
| | - Danielle Bruna Leal Oliveira
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), SP, 05508-000, São Paulo, Brazil
- Hospital Israelita Albert Einstein, HIAE, 05652-900, São Paulo, Brazil
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2
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de Almeida Campos AC, Cicolo S, de Oliveira CM, Molina CV, Navas-Suárez PE, Dos Santos TP, da Silveira VB, Barbosa CM, Baccarin RYA, Durigon EL, Góes LGB, Belli CB, Oliveira DBL. Correction to: Potential outbreak by herpesvirus in equines: detection, clinical, and genetic analysis of equid gammaherpesvirus 2 (EHV-2). Braz J Microbiol 2023:10.1007/s42770-023-00917-3. [PMID: 36763303 DOI: 10.1007/s42770-023-00917-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Affiliation(s)
- Angélica Cristine de Almeida Campos
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil.
- Clinical and Molecular Virology Research Team, Scientifc Platform Pasteur-USP (SPPU), São Paulo, SP, 05508-020, Brazil.
| | - Sofia Cicolo
- Department of Surgery, Faculdade de Medicina Veterinária E Zootecnia, Universidade de São Paulo-USP, São Paulo, SP, 05508-270, Brazil
| | - Cairo Monteiro de Oliveira
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil
| | - Camila Vieira Molina
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil
- Clinical and Molecular Virology Research Team, Scientifc Platform Pasteur-USP (SPPU), São Paulo, SP, 05508-020, Brazil
| | - Pedro Enrique Navas-Suárez
- Wildlife Comparative Pathology Laboratory, LAPCOM, Faculdade de Medicina Veterinária E Zootecnia da, Universidade de São Paulo-USP, São Paulo, SP, 05508-270, Brazil
- Wildlife Disease Association-WDA, Associate Member, Lawrence, KS, 66044-7065, USA
| | - Thais Poltronieri Dos Santos
- Department of Internal Medicine, Faculdade de Medicina Veterinária E Zootecnia, Universidade de São Paulo-USP, São Paulo, SP, 05508-270, Brazil
| | - Vanessa Barbosa da Silveira
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil
| | - Carla Meneguin Barbosa
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil
| | - Raquel Yvonne Arantes Baccarin
- Department of Internal Medicine, Faculdade de Medicina Veterinária E Zootecnia, Universidade de São Paulo-USP, São Paulo, SP, 05508-270, Brazil
| | - Edison Luiz Durigon
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil
| | - Luiz Gustavo Bentim Góes
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil
- Clinical and Molecular Virology Research Team, Scientifc Platform Pasteur-USP (SPPU), São Paulo, SP, 05508-020, Brazil
| | - Carla Bargi Belli
- Department of Internal Medicine, Faculdade de Medicina Veterinária E Zootecnia, Universidade de São Paulo-USP, São Paulo, SP, 05508-270, Brazil.
| | - Danielle Bruna Leal Oliveira
- Department of Microbiology, Instituto de Ciências Biomédicas II da Universidade de São Paulo (ICB-II/USP), São Paulo, SP, 05508-000, Brazil
- Hospital Israelita Albert Einstein, HIAE, São Paulo, 05652-900, Brazil
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3
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Bentim Góes LG, Fischer C, Almeida Campos AC, de Carvalho C, Moreira-Soto A, Ambar G, Ruckert da Rosa A, de Oliveira DC, Jo WK, Cruz-Neto AP, Pedro WA, Queiroz LH, Minoprio P, Durigon EL, Drexler JF. Highly Diverse Arenaviruses in Neotropical Bats, Brazil. Emerg Infect Dis 2022; 28:2528-2533. [PMID: 36417964 PMCID: PMC9707603 DOI: 10.3201/eid2812.220980] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024] Open
Abstract
We detected arenavirus RNA in 1.6% of 1,047 bats in Brazil that were sampled during 2007-2011. We identified Tacaribe virus in 2 Artibeus sp. bats and a new arenavirus species in Carollia perspicillata bats that we named Tietê mammarenavirus. Our results suggest that bats are an underrecognized arenavirus reservoir.
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4
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de Oliveira LG, de Souza Angelo Y, Yamamoto P, Carregari VC, Crunfli F, Reis-de-Oliveira G, Costa L, Vendramini PH, Almeida ÉD, Dos Santos NB, Firmino EM, Paiva IM, Almeida GM, Sebollela A, Polonio CM, Zanluqui NG, de Oliveira MG, da Silva P, Gastão Davanzo G, Ayupe MC, Loureiro Salgado C, de Souza Filho AF, de Araújo MV, Silva-Pereira TT, de Almeida Campos AC, Góes LGB, Dos Passos Cunha M, Caldini EG, Lima MRDI, Fonseca DM, de Sá Guimarães AM, Minoprio PC, Munhoz CD, Mori CMC, Moraes-Vieira PM, Cunha TM, Martins-de-Souza D, Peron JPS. SARS-CoV-2 Infection Impacts Carbon Metabolism and Depends on Glutamine for Replication in Syrian Hamster Astrocytes. J Neurochem 2022; 163:113-132. [PMID: 35880385 PMCID: PMC9350388 DOI: 10.1111/jnc.15679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 07/10/2022] [Accepted: 07/12/2022] [Indexed: 01/08/2023]
Abstract
COVID‐19 causes more than million deaths worldwide. Although much is understood about the immunopathogenesis of the lung disease, a lot remains to be known on the neurological impact of COVID‐19. Here we evaluated immunometabolic changes using astrocytes in vitro and dissected brain areas of SARS‐CoV‐2 infected Syrian hamsters. We show that SARS‐CoV‐2 alters proteins of carbon metabolism, glycolysis, and synaptic transmission, many of which are altered in neurological diseases. Real‐time respirometry evidenced hyperactivation of glycolysis, further confirmed by metabolomics, with intense consumption of glucose, pyruvate, glutamine, and alpha ketoglutarate. Consistent with glutamine reduction, the blockade of glutaminolysis impaired viral replication and inflammatory response in vitro. SARS‐CoV‐2 was detected in vivo in hippocampus, cortex, and olfactory bulb of intranasally infected animals. Our data evidence an imbalance in important metabolic molecules and neurotransmitters in infected astrocytes. We suggest this may correlate with the neurological impairment observed during COVID‐19, as memory loss, confusion, and cognitive impairment.
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Affiliation(s)
- Lilian Gomes de Oliveira
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil.,Neuroimmunology of Arboviruses Laboratory, Scientific Platform Pasteur, University of São Paulo, São Paulo, SP, Brazil
| | - Yan de Souza Angelo
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil.,Neuroimmunology of Arboviruses Laboratory, Scientific Platform Pasteur, University of São Paulo, São Paulo, SP, Brazil
| | - Pedro Yamamoto
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil.,Neuroimmunology of Arboviruses Laboratory, Scientific Platform Pasteur, University of São Paulo, São Paulo, SP, Brazil
| | - Victor Corasolla Carregari
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Fernanda Crunfli
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Guilherme Reis-de-Oliveira
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Lícia Costa
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Pedro Henrique Vendramini
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Érica Duque Almeida
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Nilton Barreto Dos Santos
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Egidi Mayara Firmino
- Center for Research in Inflammatory Diseases (CRID); Department of Pharmacology - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Isadora Marques Paiva
- Center for Research in Inflammatory Diseases (CRID); Department of Pharmacology - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Glaucia Maria Almeida
- Department of Biocehmistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Adriano Sebollela
- Department of Biocehmistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Carolina Manganeli Polonio
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil.,Neuroimmunology of Arboviruses Laboratory, Scientific Platform Pasteur, University of São Paulo, São Paulo, SP, Brazil
| | - Nagela Ghabdan Zanluqui
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil.,Neuroimmunology of Arboviruses Laboratory, Scientific Platform Pasteur, University of São Paulo, São Paulo, SP, Brazil
| | - Marília Garcia de Oliveira
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil
| | - Patrick da Silva
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil.,Neuroimmunology of Arboviruses Laboratory, Scientific Platform Pasteur, University of São Paulo, São Paulo, SP, Brazil
| | - Gustavo Gastão Davanzo
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Marina Caçador Ayupe
- Laboratory of Mucosal Immunology, Department of Immunology - Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Caio Loureiro Salgado
- Laboratory of Mucosal Immunology, Department of Immunology - Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Antônio Francisco de Souza Filho
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Marcelo Valdemir de Araújo
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Taiana Tainá Silva-Pereira
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | | | | | | | - Elia Garcia Caldini
- Laboratory of Cellular Biology (LIM 59), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | | | - Denise Morais Fonseca
- Laboratory of Mucosal Immunology, Department of Immunology - Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Ana Márcia de Sá Guimarães
- Laboratory of Applied Research in Mycobacteria, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | | | - Carolina Demarchi Munhoz
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Cláudia Madalena Cabrera Mori
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of Sao Paulo, São Paulo, SP, Brazil
| | - Pedro Manoel Moraes-Vieira
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Thiago Mattar Cunha
- Center for Research in Inflammatory Diseases (CRID); Department of Pharmacology - Ribeirão Preto Medical School - University of São Paulo, Ribeirão Preto, Brazil
| | - Daniel Martins-de-Souza
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil.,Experimental Medicine Research Cluster (EMRC), University of Campinas, Campinas, SP, Brazil.,D'Or Institute for Research and Education (IDOR), São Paulo, SP, Brazil.,Instituto Nacional de Biomarcadores em Neuropsiquiatria (INBION), Conselho Nacional de Desenvolvimento Científico e Tecnológico, São Paulo, SP, Brazil
| | - Jean Pierre Schatzmann Peron
- Neuroimmune Interactions Laboratory, Institute of Biomedical Science, Department of Immunology, University of São Paulo, São Paulo, SP, Brazil.,Neuroimmunology of Arboviruses Laboratory, Scientific Platform Pasteur, University of São Paulo, São Paulo, SP, Brazil.,Immunopathology and Allergy Post Graduate Program, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
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5
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Mills MG, Bruce E, Huang ML, Crothers JW, Hyrien O, Oura CAL, Blake L, Brown Jordan A, Hester S, Wehmas L, Mari B, Barby P, Lacoux C, Fassy J, Vial P, Vial C, Martinez JRW, Oladipo OO, Inuwa B, Shittu I, Meseko CA, Chammas R, Santos CF, Dionísio TJ, Garbieri TF, Parisi VA, Mendes-Correa MC, de Paula AV, Romano CM, Góes LGB, Minoprio P, Campos AC, Cunha MP, Vilela APP, Nyirenda T, Mkakosya RS, Muula AS, Dumm RE, Harris RM, Mitchell CA, Pettit S, Botten J, Jerome KR. An international, interlaboratory ring trial confirms the feasibility of an extraction-less "direct" RT-qPCR method for reliable detection of SARS-CoV-2 RNA in clinical samples. PLoS One 2022; 17:e0261853. [PMID: 35025926 PMCID: PMC8758094 DOI: 10.1371/journal.pone.0261853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/11/2021] [Indexed: 11/29/2022] Open
Abstract
Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) is used worldwide to test and trace the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). "Extraction-less" or "direct" real time-reverse transcription polymerase chain reaction (RT-PCR) is a transparent and accessible qualitative method for SARS-CoV-2 detection from nasopharyngeal or oral pharyngeal samples with the potential to generate actionable data more quickly, at a lower cost, and with fewer experimental resources than full RT-qPCR. This study engaged 10 global testing sites, including laboratories currently experiencing testing limitations due to reagent or equipment shortages, in an international interlaboratory ring trial. Participating laboratories were provided a common protocol, common reagents, aliquots of identical pooled clinical samples, and purified nucleic acids and used their existing in-house equipment. We observed 100% concordance across laboratories in the correct identification of all positive and negative samples, with highly similar cycle threshold values. The test also performed well when applied to locally collected patient nasopharyngeal samples, provided the viral transport media did not contain charcoal or guanidine, both of which appeared to potently inhibit the RT-PCR reaction. Our results suggest that direct RT-PCR assay methods can be clearly translated across sites utilizing readily available equipment and expertise and are thus a feasible option for more efficient COVID-19 coronavirus disease testing as demanded by the continuing pandemic.
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Affiliation(s)
- Margaret G. Mills
- Virology Division, Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, United States of America
| | - Emily Bruce
- Division of Immunobiology, Department of Medicine, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, Vermont, United States of America
| | - Meei-Li Huang
- Virology Division, Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, United States of America
| | - Jessica W. Crothers
- Division of Immunobiology, Department of Medicine, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, Vermont, United States of America
| | - Ollivier Hyrien
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Christopher A. L. Oura
- School of Veterinary Medicine, University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Lemar Blake
- School of Veterinary Medicine, University of the West Indies, St. Augustine, Trinidad and Tobago
| | | | - Susan Hester
- Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, United States of America
| | - Leah Wehmas
- Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, United States of America
| | - Bernard Mari
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, FHU-OncoAge, Valbonne, France
| | - Pascal Barby
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, FHU-OncoAge, Valbonne, France
| | - Caroline Lacoux
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, FHU-OncoAge, Valbonne, France
| | - Julien Fassy
- Université Côte d’Azur, CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, FHU-OncoAge, Valbonne, France
| | - Pablo Vial
- Facultad de Medicina Clínica Alemana Universidad del Desarrollo, Programa Hantavirus, Instituto de Ciencias e Innovación en Medicina, Santiago, Chile
| | - Cecilia Vial
- Facultad de Medicina Clínica Alemana Universidad del Desarrollo, Programa Hantavirus, Instituto de Ciencias e Innovación en Medicina, Santiago, Chile
| | - Jose R. W. Martinez
- Facultad de Medicina Clínica Alemana Universidad del Desarrollo, Programa Hantavirus, Instituto de Ciencias e Innovación en Medicina, Santiago, Chile
| | | | - Bitrus Inuwa
- Infectious and Transboundary Animal Diseases, National Veterinary Research Institute, Vom, Nigeria
| | - Ismaila Shittu
- Infectious and Transboundary Animal Diseases, National Veterinary Research Institute, Vom, Nigeria
| | - Clement A. Meseko
- Infectious and Transboundary Animal Diseases, National Veterinary Research Institute, Vom, Nigeria
| | - Roger Chammas
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Radiologia e Oncologia, Centro de Investigação Translacional em Oncologia, Instituto do Cancer do Estado de São Paulo, São Paulo, Brazil
| | - Carlos Ferreira Santos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Thiago José Dionísio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Thais Francini Garbieri
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Viviane Aparecida Parisi
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | | | - Anderson V. de Paula
- Department of Infectious Diseases, Institute of Tropical Medicine of São Paulo, São Paulo, Brazil
| | - Camila M. Romano
- Department of Infectious Diseases, Institute of Tropical Medicine of São Paulo, São Paulo, Brazil
| | - Luiz Gustavo Bentim Góes
- Scientific Platform Pasteur-USP, Universidade de São Paulo, São Paulo, Brazil
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | - Paola Minoprio
- Scientific Platform Pasteur-USP, Universidade de São Paulo, São Paulo, Brazil
| | - Angelica C. Campos
- Scientific Platform Pasteur-USP, Universidade de São Paulo, São Paulo, Brazil
| | - Marielton P. Cunha
- Scientific Platform Pasteur-USP, Universidade de São Paulo, São Paulo, Brazil
| | - Ana Paula P. Vilela
- Scientific Platform Pasteur-USP, Universidade de São Paulo, São Paulo, Brazil
| | - Tonney Nyirenda
- Department of Pathology, College of Medicine, University of Malawi, Blantyre, Malawi
| | | | - Adamson S. Muula
- Department of Public Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Rebekah E. Dumm
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Rebecca M. Harris
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Constance A. Mitchell
- Health and Environmental Sciences Institute, Washington, DC, United States of America
| | - Syril Pettit
- Health and Environmental Sciences Institute, Washington, DC, United States of America
| | - Jason Botten
- Division of Immunobiology, Department of Medicine, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, Vermont, United States of America
- Department of Microbiology and Molecular Genetics, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, Vermont, United States of America
| | - Keith R. Jerome
- Virology Division, Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
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6
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Cunha MDP, Vilela APP, Molina CV, Acuña SM, Muxel SM, Barroso VDM, Baroni S, Gomes de Oliveira L, Angelo YDS, Peron JPS, Góes LGB, Campos ACDA, Minóprio P. Atypical Prolonged Viral Shedding With Intra-Host SARS-CoV-2 Evolution in a Mildly Affected Symptomatic Patient. Front Med (Lausanne) 2021; 8:760170. [PMID: 34901074 PMCID: PMC8661089 DOI: 10.3389/fmed.2021.760170] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/13/2021] [Indexed: 01/08/2023] Open
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is caused by a respiratory virus with a wide range of manifestations, varying from asymptomatic to fatal cases, with a generally short outcome. However, some individuals present long-term viral shedding. We monitored 38 individuals who were mildly affected by the SARS-CoV-2 infection. Out of the total studied population, three (7.9%) showed atypical events regarding the duration of positivity for viral RNA detection. In one of these atypical cases, a previously HIV-positive male patient presented a SARS-CoV-2 RNA shedding and subgenomic RNA (sgRNA) detected from the upper respiratory tract, respectively, for 232 and 224 days after the onset of the symptoms. The SARS-CoV-2 B.1.1.28 lineage, one of the most prevalent in Brazil in 2020, was identified in this patient in three serial samples. Interestingly, the genomic analyses performed throughout the infectious process showed an increase in the genetic diversity of the B.1.1.28 lineage within the host itself, with viral clearance occurring naturally, without any intervention measures to control the infection. Contrasting widely spread current knowledge, our results indicate that potentially infectious SARS-CoV-2 virus might be shed by much longer periods by some infected patients. This data call attention to better adapted non-pharmacological measures and clinical discharge of patients aiming at preventing the spread of SARS-CoV-2 to the population.
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Affiliation(s)
| | | | | | | | - Sandra Marcia Muxel
- Scientific Platform Pasteur—USP, São Paulo, Brazil
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Vinícius de Morais Barroso
- Scientific Platform Pasteur—USP, São Paulo, Brazil
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | | | | | - Jean Pierre Schatzmann Peron
- Scientific Platform Pasteur—USP, São Paulo, Brazil
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Luiz Gustavo Bentim Góes
- Scientific Platform Pasteur—USP, São Paulo, Brazil
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Paola Minóprio
- Scientific Platform Pasteur—USP, São Paulo, Brazil
- Institut Pasteur, Paris, France
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7
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Mills MG, Bruce E, Huang ML, Crothers JW, Hyrien O, Oura CAL, Blake L, Jordan AB, Hester S, Wehmas L, Mari B, Barby P, Lacoux C, Fassy J, Vial P, Vial C, Martinez JRW, Oladipo OO, Inuwa B, Shittu I, Meseko CA, Chammas R, Santos CF, José Dionísio T, Garbieri TF, Parisi VA, Mendes-Correa MC, dePaula AV, Romano CM, Góes LGB, Minoprio P, Campos AC, Cunha MP, Vilela APP, Nyirenda T, Mkakosya RS, Muula AS, Dumm RE, Harris RM, Mitchell CA, Pettit S, Botten J, Jerome KR. An international, interlaboratory ring trial confirms the feasibility of an open-source, extraction-less "direct" RT-qPCR method for reliable detection of SARS-CoV-2 RNA in clinical samples. medRxiv 2021:2021.04.10.21254091. [PMID: 33880478 PMCID: PMC8057246 DOI: 10.1101/2021.04.10.21254091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) is used worldwide to test and trace the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). "Extraction-less" or "direct" real time-reverse transcription polymerase chain reaction (RT-PCR) is an open-access qualitative method for SARS-CoV-2 detection from nasopharyngeal or oral pharyngeal samples with the potential to generate actionable data more quickly, at a lower cost, and with fewer experimental resources than full RT-qPCR. This study engaged 10 global testing sites, including laboratories currently experiencing testing limitations due to reagent or equipment shortages, in an international interlaboratory ring trial. Participating laboratories were provided a common protocol, common reagents, aliquots of identical pooled clinical samples, and purified nucleic acids and used their existing in-house equipment. We observed 100% concordance across laboratories in the correct identification of all positive and negative samples, with highly similar cycle threshold values. The test also performed well when applied to locally collected patient nasopharyngeal samples, provided the viral transport media did not contain charcoal or guanidine, both of which appeared to potently inhibit the RT-PCR reaction. Our results suggest that open-access, direct RT-PCR assays are a feasible option for more efficient COVID-19 coronavirus disease testing as demanded by the continuing pandemic.
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8
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Góes LGB, Zerbinati RM, Tateno AF, de Souza AV, Ebach F, Corman VM, Moreira-Filho CA, Durigon EL, da Silva Filho LVRF, Drexler JF. Typical epidemiology of respiratory virus infections in a Brazilian slum. J Med Virol 2019; 92:1316-1321. [PMID: 31769524 PMCID: PMC7228228 DOI: 10.1002/jmv.25636] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 11/21/2019] [Indexed: 02/01/2023]
Abstract
Host population size, density, immune status, age structure, and contact rates are critical elements of virus epidemiology. Slum populations stand out from other settings and may present differences in the epidemiology of acute viral infections. We collected nasopharyngeal specimens from 282 children aged ≤5 years with acute respiratory tract infection (ARI) during 2005 to 2006 in one of the largest Brazilian slums. We conducted real‐time reverse transcription‐polymerase chain reaction (RT‐PCR) for 16 respiratory viruses, nested RT‐PCR‐based typing of rhinoviruses (HRVs), and collected clinical symptoms. Viruses were common causes of respiratory disease; with ≥1 virus being detected in 65.2% of patients. We detected 15 different viruses during 1 year with a predominance of HRV (33.0%) and human respiratory syncytial virus (hRSV, 12.1%) infections, and a high rate of viral coinfections (28.3%). We observed seasonality of hRSV, HRV and human coronavirus infections, more severe symptoms in hRSV and influenza virus (FLU) infections and prolonged circulation of seven HRV clusters likely representing distinct serotypes according to genomic sequence distances. Potentially unusual findings included the absence of human metapneumovirus detections and lack of typical FLU seasonal patterns, which may be linked to the population size and density of the slum. Nonetheless, most epidemiological patterns were similar to other studies globally, suggesting surprising similarities of virus‐associated ARI across highly diverse settings and a complex impact of population characteristics on respiratory virus epidemiology. Large epidemiological study of respiratory viruses in children from one of the biggest Brazilian slums using sensitive molecular PCR assays Viruses are common causes of respiratory disease in pediatric patients from a Brazilian slum 15 distinct viruses circulate in the Brazilian slum, with highest prevalence of rhinoviruses and human respiratory syncytial virus The epidemiology of virus‐associated respiratory infections presents surprising similarities worldwide despite drastic differences in socioeconomic status and population characteristics
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Affiliation(s)
- Luiz Gustavo Bentim Góes
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.,Laboratório de Virologia Clínica e Molecular, Departamento de Microbiologia - ICB-II, Universidade de São Paulo, São Paulo, Brazil
| | | | | | | | - Fabian Ebach
- Institute of Virology, University of Bonn Medical Center, Bonn, Germany
| | - Victor M Corman
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.,German Center for Infection Research (DZIF), associated partner site Charité, Berlin, Germany
| | | | - Edison Luiz Durigon
- Laboratório de Virologia Clínica e Molecular, Departamento de Microbiologia - ICB-II, Universidade de São Paulo, São Paulo, Brazil
| | | | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.,German Center for Infection Research (DZIF), associated partner site Charité, Berlin, Germany.,Martsinovsky Institute of Medical Parasitology, Tropical and Vector-Borne Diseases, Sechenov University, Moscow, Russia
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9
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Campos ACA, Góes LGB, Moreira-Soto A, de Carvalho C, Ambar G, Sander AL, Fischer C, Ruckert da Rosa A, Cardoso de Oliveira D, Kataoka APG, Pedro WA, Martorelli LFA, Queiroz LH, Cruz-Neto AP, Durigon EL, Drexler JF. Bat Influenza A(HL18NL11) Virus in Fruit Bats, Brazil. Emerg Infect Dis 2019; 25:333-337. [PMID: 30666923 PMCID: PMC6346480 DOI: 10.3201/eid2502.181246] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Screening of 533 bats for influenza A viruses showed subtype HL18NL11 in intestines of 2 great fruit-eating bats (Artibeus lituratus). High concentrations suggested fecal shedding. Genomic characterizations revealed conservation of viral genes across different host species, countries, and sampling years, suggesting a conserved cellular receptor and wide-ranging occurrence of bat influenza A viruses.
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10
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Góes LGB, Campos ACDA, Carvalho CD, Ambar G, Queiroz LH, Cruz-Neto AP, Munir M, Durigon EL. Genetic diversity of bats coronaviruses in the Atlantic Forest hotspot biome, Brazil. Infect Genet Evol 2016; 44:510-513. [PMID: 27473780 PMCID: PMC7106056 DOI: 10.1016/j.meegid.2016.07.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/22/2016] [Accepted: 07/25/2016] [Indexed: 11/26/2022]
Abstract
Bats are notorious reservoirs of genetically-diverse and high-profile pathogens, and are playing crucial roles in the emergence and re-emergence of viruses, both in human and in animals. In this report, we identified and characterized previously unknown and diverse genetic clusters of bat coronaviruses in the Atlantic Forest Biome, Brazil. These results highlight the virus richness of bats and their possible roles in the public health. We describe the circulation of CoV lineages, 13 α-CoV and two β-CoV in AFB bats. Coronaviruses were detected in 15 bat samples from eight bat species (50% positivity). A cluster of α-CoVs were detected in Sturnira bat that grouped with α-CoVs lineage-1. We identified two distinct β-CoV that clustered within MERS-CoV containing lineage C. Results highlight the virus richness of bats and their possible roles in the public health.
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Affiliation(s)
- Luiz Gustavo Bentim Góes
- Universidade de São Paulo (USP), Dept. Microbiologia, Instituto de Ciências Biomédicas (ICB), Sao Paulo, SP, Brazil.
| | | | - Cristiano de Carvalho
- Universidade Estadual Paulista (UNESP), Dept. de Apoio, Produção e Saúde Animal, Faculdade de Medicina Veterinária de Araçatuba, Araçatuba, SP, Brazil.
| | - Guilherme Ambar
- Universidade Estadual Paulista (UNESP), Dept. Zoologia, Instituto de Biociências, Rio Claro, SP, Brazil.
| | - Luzia Helena Queiroz
- Universidade Estadual Paulista (UNESP), Dept. de Apoio, Produção e Saúde Animal, Faculdade de Medicina Veterinária de Araçatuba, Araçatuba, SP, Brazil.
| | | | - Muhammad Munir
- The Pirbright Institute, Woking, Surrey, United Kingdom.
| | - Edison Luiz Durigon
- Universidade de São Paulo (USP), Dept. Microbiologia, Instituto de Ciências Biomédicas (ICB), Sao Paulo, SP, Brazil.
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11
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Góes LGB, Ruvalcaba SG, Campos AA, Queiroz LH, de Carvalho C, Jerez JA, Durigon EL, Dávalos LII, Dominguez SR. Novel bat coronaviruses, Brazil and Mexico. Emerg Infect Dis 2014; 19:1711-3. [PMID: 24050144 PMCID: PMC3810755 DOI: 10.3201/eid1910.130525] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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12
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Dominguez SR, Shrivastava S, Berglund A, Qian Z, Góes LGB, Halpin RA, Fedorova N, Ransier A, Weston PA, Durigon EL, Jerez JA, Robinson CC, Town CD, Holmes KV. Isolation, propagation, genome analysis and epidemiology of HKU1 betacoronaviruses. J Gen Virol 2014; 95:836-848. [PMID: 24394697 DOI: 10.1099/vir.0.059832-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
From 1 January 2009 to 31 May 2013, 15 287 respiratory specimens submitted to the Clinical Virology Laboratory at the Children's Hospital Colorado were tested for human coronavirus RNA by reverse transcription-PCR. Human coronaviruses HKU1, OC43, 229E and NL63 co-circulated during each of the respiratory seasons but with significant year-to-year variability, and cumulatively accounted for 7.4-15.6 % of all samples tested during the months of peak activity. A total of 79 (0.5 % prevalence) specimens were positive for human betacoronavirus HKU1 RNA. Genotypes HKU1 A and B were both isolated from clinical specimens and propagated on primary human tracheal-bronchial epithelial cells cultured at the air-liquid interface and were neutralized in vitro by human intravenous immunoglobulin and by polyclonal rabbit antibodies to the spike glycoprotein of HKU1. Phylogenetic analysis of the deduced amino acid sequences of seven full-length genomes of Colorado HKU1 viruses and the spike glycoproteins from four additional HKU1 viruses from Colorado and three from Brazil demonstrated remarkable conservation of these sequences with genotypes circulating in Hong Kong and France. Within genotype A, all but one of the Colorado HKU1 sequences formed a unique subclade defined by three amino acid substitutions (W197F, F613Y and S752F) in the spike glycoprotein and exhibited a unique signature in the acidic tandem repeat in the N-terminal region of the nsp3 subdomain. Elucidating the function of and mechanisms responsible for the formation of these varying tandem repeats will increase our understanding of the replication process and pathogenicity of HKU1 and potentially of other coronaviruses.
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Affiliation(s)
- Samuel R Dominguez
- Departments of Microbiology, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA.,Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Susmita Shrivastava
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Andrew Berglund
- Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Zhaohui Qian
- Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Luiz Gustavo Bentim Góes
- Interdisciplinary Graduate Program in Biotechnology, University of São Paulo, Av Prof. Lineu Prestes, 2415, ICB-III, Cidade Universitária, CEP: 05508-900, São Paulo, SP - Brazil.,J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - Rebecca A Halpin
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Nadia Fedorova
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Amy Ransier
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Philip A Weston
- Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Edison Luiz Durigon
- Interdisciplinary Graduate Program in Biotechnology, University of São Paulo, Av Prof. Lineu Prestes, 2415, ICB-III, Cidade Universitária, CEP: 05508-900, São Paulo, SP - Brazil.,J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - José Antonio Jerez
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Av Prof. Lineu Prestes 1374, ICB-II, Cidade Universitária, CEP: 05580-900, São Paulo, SP - Brazil.,J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - Christine C Robinson
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, CEP: 05508-270, Sao Paulo, SP - Brazil
| | - Christopher D Town
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Kathryn V Holmes
- Departments of Microbiology, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
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13
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Góes LGB, de Freitas AC, Ferraz OP, Rieger TT, Dos Santos JF, Pereira A, Beçak W, Lindsey CJ, de Cassia Stocco R. Bovine papillomavirus type 4 L1 gene transfection in a Drosophila S2 cell expression system: absence of L1 protein expression. Braz J Microbiol 2008; 39:1-4. [PMID: 24031166 PMCID: PMC3768373 DOI: 10.1590/s1517-83822008000100001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2006] [Revised: 05/31/2007] [Accepted: 01/23/2008] [Indexed: 05/27/2023] Open
Abstract
The development of a bovine papillomavirus (BPV) vaccine is an outstanding challenge. BPV protein L1 gene transfection in the Drosophila melanogaster S2 cell expression system failed to produce L1 protein notwithstanding correct L1 gene insertion. Severe genetic inbalance in the host cell line, including cytogenetic alterations, may account for the lack of protein expression.
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14
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Carvalho CD, Freitas ACD, Brunner O, Góes LGB, Cavalcante AY, Beçak W, Santos RDCSD. Bovine papillomavirus type 2 in reproductive tract and gametes of slaughtered bovine females. Braz J Microbiol 2003. [DOI: 10.1590/s1517-83822003000500028] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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