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Botosso VF, Precioso AR, Wilder-Smith A, de Oliveira DBL, de Oliveira FBL, De Oliveira CM, Soares CP, Oliveira LTL, dos Santo RMV, de Agostini Utescher CL, Coutinho FAB, Massad E. Seroprevalence of Zika in Brazil stratified by age and geographic distribution. Epidemiol Infect 2023; 151:1-16. [PMID: 37965751 PMCID: PMC10728971 DOI: 10.1017/s0950268823001814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 11/16/2023] Open
Abstract
Congenital Zika is a devastating consequence of maternal Zika virus infections. Estimates of age-dependent seroprevalence profiles are central to our understanding of the force of Zika virus infections. We set out to calculate the age-dependent seroprevalence of Zika virus infections in Brazil. We analyzed serum samples stratified by age and geographic location, collected from 2016 to 2019, from about 16,000 volunteers enrolled in a Phase 3 dengue vaccine trial led by the Institute Butantan in Brazil. Our results show that Zika seroprevalence has a remarkable age-dependent and geographical distribution, with an average age of the first infection varying from region to region, ranging from 4.97 (3.03–5.41) to 7.24 (6.98–7.90) years. The calculated basic reproduction number, , varied from region to region, ranging from 1.18 (1.04–1.41) to 2.33 (1.54–3.85). Such data are paramount to determine the optimal age to vaccinate against Zika, if and when such a vaccine becomes available.
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Affiliation(s)
| | | | - Annelies Wilder-Smith
- Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany
| | | | | | | | | | | | | | | | | | - Eduardo Massad
- Instituto Butantan, São Paulo, Brazil
- School of Medicine, University of São Paulo, São Paulo, Brazil
- Fundação Getúlio Vargas, Rio de Janeiro, Brazil
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2
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Reinke PYA, de Souza EE, Günther S, Falke S, Lieske J, Ewert W, Loboda J, Herrmann A, Rahmani Mashhour A, Karničar K, Usenik A, Lindič N, Sekirnik A, Botosso VF, Santelli GMM, Kapronezai J, de Araújo MV, Silva-Pereira TT, Filho AFDS, Tavares MS, Flórez-Álvarez L, de Oliveira DBL, Durigon EL, Giaretta PR, Heinemann MB, Hauser M, Seychell B, Böhler H, Rut W, Drag M, Beck T, Cox R, Chapman HN, Betzel C, Brehm W, Hinrichs W, Ebert G, Latham SL, Guimarães AMDS, Turk D, Wrenger C, Meents A. Calpeptin is a potent cathepsin inhibitor and drug candidate for SARS-CoV-2 infections. Commun Biol 2023; 6:1058. [PMID: 37853179 PMCID: PMC10584882 DOI: 10.1038/s42003-023-05317-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 09/01/2023] [Indexed: 10/20/2023] Open
Abstract
Several drug screening campaigns identified Calpeptin as a drug candidate against SARS-CoV-2. Initially reported to target the viral main protease (Mpro), its moderate activity in Mpro inhibition assays hints at a second target. Indeed, we show that Calpeptin is an extremely potent cysteine cathepsin inhibitor, a finding additionally supported by X-ray crystallography. Cell infection assays proved Calpeptin's efficacy against SARS-CoV-2. Treatment of SARS-CoV-2-infected Golden Syrian hamsters with sulfonated Calpeptin at a dose of 1 mg/kg body weight reduces the viral load in the trachea. Despite a higher risk of side effects, an intrinsic advantage in targeting host proteins is their mutational stability in contrast to highly mutable viral targets. Here we show that the inhibition of cathepsins, a protein family of the host organism, by calpeptin is a promising approach for the treatment of SARS-CoV-2 and potentially other viral infections.
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Affiliation(s)
- Patrick Y A Reinke
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Edmarcia Elisa de Souza
- Department of Parasitology, Institute of Biomedical Sciences at the University of São Paulo, São Paulo, Brazil
| | - Sebastian Günther
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Sven Falke
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Julia Lieske
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Wiebke Ewert
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Jure Loboda
- Department of Biochemistry and Molecular and Structural Biology, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova 39, Ljubljana, Slovenia
| | | | - Aida Rahmani Mashhour
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Katarina Karničar
- Department of Biochemistry and Molecular and Structural Biology, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
- Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins, Jamova 39, 1000, Ljubljana, Slovenia
| | - Aleksandra Usenik
- Department of Biochemistry and Molecular and Structural Biology, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
- Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins, Jamova 39, 1000, Ljubljana, Slovenia
| | - Nataša Lindič
- Department of Biochemistry and Molecular and Structural Biology, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
| | - Andreja Sekirnik
- Department of Biochemistry and Molecular and Structural Biology, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
| | - Viviane Fongaro Botosso
- Virology Laboratory, Center of Development and Innovation, Butantan Institute, São Paulo, Brazil
| | - Gláucia Maria Machado Santelli
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Josana Kapronezai
- Virology Laboratory, Center of Development and Innovation, Butantan Institute, São Paulo, Brazil
| | - Marcelo Valdemir de Araújo
- Virology Laboratory, Center of Development and Innovation, Butantan Institute, São Paulo, Brazil
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Taiana Tainá Silva-Pereira
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Department of Preventive Veterinary Medicine and Animal Health, College of Veterinary Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Mariana Silva Tavares
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Lizdany Flórez-Álvarez
- Department of Parasitology, Institute of Biomedical Sciences at the University of São Paulo, São Paulo, Brazil
| | | | - Edison Luiz Durigon
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Paula Roberta Giaretta
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 4474 TAMU, School Station, TX, USA
| | - Marcos Bryan Heinemann
- Department of Preventive Veterinary Medicine and Animal Health, College of Veterinary Medicine, University of São Paulo, São Paulo, Brazil
| | - Maurice Hauser
- Institute for Organic Chemistry and BMWZ, Leibniz University of Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Brandon Seychell
- Department of Chemistry, Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146, Hamburg, Germany
| | - Hendrik Böhler
- Department of Chemistry, Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146, Hamburg, Germany
| | - Wioletta Rut
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Marcin Drag
- Department of Chemical Biology and Bioimaging, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Tobias Beck
- Department of Chemistry, Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146, Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Russell Cox
- Institute for Organic Chemistry and BMWZ, Leibniz University of Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Henry N Chapman
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
- Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
- Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Christian Betzel
- Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
- Department of Chemistry, Institute of Biochemistry and Molecular Biology and Laboratory for Structural Biology of Infection and Inflammation, c/o DESY, Universität Hamburg, 22607, Hamburg, Germany
| | - Wolfgang Brehm
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - Winfried Hinrichs
- Universität Greifswald, Institute of Biochemistry, Felix-Hausdorff-Str. 4, 17489, Greifswald, Germany
| | - Gregor Ebert
- Institute of Virology, Helmholtz Munich, Munich, Germany
- Institute of Virology, Technical University of Munich, Munich, Germany
| | - Sharissa L Latham
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW, Australia
- St Vincent's Hospital Clinical School, UNSW, Sydney, NSW, Australia
| | - Ana Marcia de Sá Guimarães
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Dusan Turk
- Department of Biochemistry and Molecular and Structural Biology, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia.
- Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins, Jamova 39, 1000, Ljubljana, Slovenia.
| | - Carsten Wrenger
- Department of Parasitology, Institute of Biomedical Sciences at the University of São Paulo, São Paulo, Brazil.
| | - Alke Meents
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.
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Servian CDP, Spadafora-Ferreira M, dos Anjos DCC, Guilarde AO, Gomes-Junior AR, Borges MASB, Masson LC, Silva JMM, de Lima MHA, Moraes BGN, Souza SM, Xavier LE, de Oliveira DCA, Batalha-Carvalho JV, Moro AM, Bocca AL, Pfrimer IAH, Costa NL, Feres VCDR, Fiaccadori FS, Souza M, Gardinassi LG, Durigon EL, Romão PRT, Jorge SAC, Coelho V, Botosso VF, Fonseca SG. Distinct anti-NP, anti-RBD and anti-Spike antibody profiles discriminate death from survival in COVID-19. Front Immunol 2023; 14:1206979. [PMID: 37876932 PMCID: PMC10591157 DOI: 10.3389/fimmu.2023.1206979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 09/04/2023] [Indexed: 10/26/2023] Open
Abstract
Introduction Infection by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) induces rapid production of IgM, IgA, and IgG antibodies directed to multiple viral antigens that may have impact diverse clinical outcomes. Methods We evaluated IgM, IgA, and IgG antibodies directed to the nucleocapsid (NP), IgA and IgG to the Spike protein and to the receptor-binding domain (RBD), and the presence of neutralizing antibodies (nAb), in a cohort of unvaccinated SARS-CoV-2 infected individuals, in the first 30 days of post-symptom onset (PSO) (T1). Results This study included 193 coronavirus disease 2019 (COVID-19) participants classified as mild, moderate, severe, critical, and fatal and 27 uninfected controls. In T1, we identified differential antibody profiles associated with distinct clinical presentation. The mild group presented lower levels of anti-NP IgG, and IgA (vs moderate and severe), anti-NP IgM (vs severe, critical and fatal), anti-Spike IgA (vs severe and fatal), and anti-RBD IgG (vs severe). The moderate group presented higher levels of anti-RBD IgA, comparing with severe group. The severe group presented higher levels of anti-NP IgA (vs mild and fatal) and anti-RBD IgG (vs mild and moderate). The fatal group presented higher levels of anti-NP IgM and anti-Spike IgA (vs mild), but lower levels of anti-NP IgA (vs severe). The levels of nAb was lower just in mild group compared to severe, critical, and fatal groups, moreover, no difference was observed among the more severe groups. In addition, we studied 82 convalescent individuals, between 31 days to 6 months (T2) or more than 6 months (T3), PSO, those: 12 mild, 26 moderate, and 46 severe plus critical. The longitudinal analyzes, for the severe plus critical group showed lower levels of anti-NP IgG, IgA and IgM, anti-Spike IgA in relation T3. The follow-up in the fatal group, reveals that the levels of anti-spike IgG increased, while anti-NP IgM levels was decreased along the time in severe/critical and fatal as well as anti-NP IgG and IgA in several/critical groups. Discussion In summary, the anti-NP IgA and IgG lower levels and the higher levels of anti-RBD and anti-Spike IgA in fatal compared to survival group of individuals admitted to the intensive care unit (ICU). Collectively, our data discriminate death from survival, suggesting that anti-RBD IgA and anti-Spike IgA may play some deleterious effect, in contrast with the potentially protective effect of anti-NP IgA and IgG in the survival group.
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Affiliation(s)
- Carolina do Prado Servian
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | | | - Déborah Carolina Carvalho dos Anjos
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Adriana Oliveira Guilarde
- Departamento de Patologia Tropical e Dermatologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
- Hospital das Clínicas, Faculdade de Medicina, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Antonio Roberto Gomes-Junior
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Moara Alves Santa Bárbara Borges
- Departamento de Patologia Tropical e Dermatologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
- Hospital das Clínicas, Faculdade de Medicina, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Letícia Carrijo Masson
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - João Marcos Maia Silva
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | | | | | - Sueli Meira Souza
- Laboratório Prof Margarida Dobler Komma, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Luiz Eterno Xavier
- Hospital das Clínicas, Faculdade de Medicina, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | | | | | - Ana Maria Moro
- Laboratório de Biofármacos, Instituto Butantan, São Paulo, SP, Brazil
- Instituto de Investigação em Imunologia – Instituto Nacional de Ciências e Tecnologia (III-INCT), São Paulo, SP, Brazil
| | - Anamélia Lorenzetti Bocca
- Departamento de Biologia Celular, Instituto de Biologia, Universidade de Brasília, Brasília, DF, Brazil
| | | | - Nádia Lago Costa
- Faculdade de Odontologia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | | | - Fabiola Souza Fiaccadori
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Menira Souza
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Luiz Gustavo Gardinassi
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Edison Luiz Durigon
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Pedro Roosevelt Torres Romão
- Laboratório de Imunologia Celular e Molecular, Programa de Pós-Graduação em Ciências da Saúde, Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | | | - Verônica Coelho
- Instituto de Investigação em Imunologia – Instituto Nacional de Ciências e Tecnologia (III-INCT), São Paulo, SP, Brazil
- Laboratório de Imunologia, Instituto do Coração (InCor), Universidade de São Paulo, Faculdade de Medicina, São Paulo, SP, Brazil
- Laboratório de Histocompatibilidade e Imunidade Celular, Hospital das Clínicas Hospital da Clínicas, Faculdade de Medicina, Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
| | | | - Simone Gonçalves Fonseca
- Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
- Instituto de Investigação em Imunologia – Instituto Nacional de Ciências e Tecnologia (III-INCT), São Paulo, SP, Brazil
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Botosso VF, Durigon EL, de Souza EE. Editorial: Emerging human viruses with pandemic potential: Diagnostics, pathogenesis, and therapeutics. Front Cell Infect Microbiol 2023; 13:1182522. [PMID: 37033481 PMCID: PMC10076870 DOI: 10.3389/fcimb.2023.1182522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 03/13/2023] [Indexed: 04/11/2023] Open
Affiliation(s)
- Viviane Fongaro Botosso
- Virology Laboratory, Butantan Institute, São Paulo, Brazil
- *Correspondence: Viviane Fongaro Botosso, ; Edison Luiz Durigon, ; Edmarcia Elisa de Souza,
| | - Edison Luiz Durigon
- Scientific Platform Pasteur-University of São Paulo, São Paulo, Brazil
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- *Correspondence: Viviane Fongaro Botosso, ; Edison Luiz Durigon, ; Edmarcia Elisa de Souza,
| | - Edmarcia Elisa de Souza
- Unit for Drug Discovery, Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- *Correspondence: Viviane Fongaro Botosso, ; Edison Luiz Durigon, ; Edmarcia Elisa de Souza,
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5
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Flórez-Álvarez L, de Souza EE, Botosso VF, de Oliveira DBL, Ho PL, Taborda CP, Palmisano G, Capurro ML, Pinho JRR, Ferreira HL, Minoprio P, Arruda E, de Souza Ferreira LC, Wrenger C, Durigon EL. Hemorrhagic fever viruses: Pathogenesis, therapeutics, and emerging and re-emerging potential. Front Microbiol 2022; 13:1040093. [PMID: 36386719 PMCID: PMC9640979 DOI: 10.3389/fmicb.2022.1040093] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/06/2022] [Indexed: 01/29/2023] Open
Abstract
Hemorrhagic fever viruses (HFVs) pose a threat to global public health owing to the emergence and re-emergence of highly fatal diseases. Viral hemorrhagic fevers (VHFs) caused by these viruses are mostly characterized by an acute febrile syndrome with coagulation abnormalities and generalized hemorrhage that may lead to life-threatening organ dysfunction. Currently, the events underlying the viral pathogenicity associated with multiple organ dysfunction syndrome still underexplored. In this minireview, we address the current knowledge of the mechanisms underlying VHFs pathogenesis and discuss the available development of preventive and therapeutic options to treat these infections. Furthermore, we discuss the potential of HFVs to cause worldwide emergencies along with factors that favor their spread beyond their original niches.
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Affiliation(s)
| | | | | | | | - Paulo Lee Ho
- Virology Laboratory, Butantan Institute, São Paulo, Brazil
| | | | - Giuseppe Palmisano
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - João Renato Rebello Pinho
- Albert Einstein Institute for Teaching and Research (IIEP), Hospital Israelita Albert Einstein, São Paulo, Brazil,Hospital das Clínicas da Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Helena Lage Ferreira
- Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo, Brazil
| | | | - Eurico Arruda
- Faculty of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Luís Carlos de Souza Ferreira
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,Scientific Platform Pasteur-USP, São Paulo, Brazil
| | - Carsten Wrenger
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,*Correspondence: Carsten Wrenger, ; Edison Luiz Durigon,
| | - Edison Luiz Durigon
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,Scientific Platform Pasteur-USP, São Paulo, Brazil,*Correspondence: Carsten Wrenger, ; Edison Luiz Durigon,
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6
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Oliveira CLP, Lopes JLS, Sant'Anna OA, Botosso VF, Bordallo HN, Fantini MCA. The development of new oral vaccines using porous silica. J Phys Condens Matter 2022; 34:264001. [PMID: 35390772 DOI: 10.1088/1361-648x/ac6559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Ordered mesoporous silica (OMS) was proved to be an efficient oral adjuvant capable to deliver a wide in size variety of different antigens, promoting efficient immunogenicity. This material can be used in single or polivalent vaccines, which have been developed by a group of Brazilian scientists. The experiments performed with the model protein Bovine Serum Albumin (BSA) gave the first promissing results, that were also achieved by testing the virus like particle surface antigen of hepatitis B (HBsAg) and diphtheria anatoxin (dANA). Nanostructured OMS, SBA-15 type, with bi-dimensional hexagonal porous symmetry was used to encapsulate the antigens either in the mesoporous (pore diameter ∼ 10 nm) or macroporous (pore diameter > 50 nm) regions. This silica vehicle proved to be capable to create an inflammatory response, did not exhibit toxicity, being effective to induce immunity in high and low responder mice towards antibody production. The silica particles are in the range of micrometer size, leaving no trace in mice organs due to its easy expulsion by faeces. The methods of physics, usually employed to characterize the structure, composition and morphology of materials are of fundamental importance to develop proper oral vaccines in order to state the ideal antigen load to avoid clustering and to determine the rate of antigen release in different media mimicking body fluids.
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Affiliation(s)
- C L P Oliveira
- Instituto de Física, Universidade de São Paulo, São Paulo-SP, Brazil
| | - J L S Lopes
- Instituto de Física, Universidade de São Paulo, São Paulo-SP, Brazil
| | | | | | - H N Bordallo
- Niels Bohr Institute, Kopenhagen University, Copenhagen, Denmark
| | - M C A Fantini
- Instituto de Física, Universidade de São Paulo, São Paulo-SP, Brazil
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7
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Fantini MCDA, Oliveira CLP, Lopes JLDS, Martins TDS, Akamatsu MA, Trezena AG, Franco MTD, Botosso VF, Sant’Anna OABE, Kardjilov N, Rasmussen MK, Bordallo HN. Using crystallography tools to improve vaccine formulations. IUCrJ 2022; 9:11-20. [PMID: 35059205 PMCID: PMC8733884 DOI: 10.1107/s205225252101071x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/15/2021] [Indexed: 06/14/2023]
Abstract
This article summarizes developments attained in oral vaccine formulations based on the encapsulation of antigen proteins inside porous silica matrices. These vaccine vehicles show great efficacy in protecting the proteins from the harsh acidic stomach medium, allowing the Peyer's patches in the small intestine to be reached and consequently enhancing immunity. Focusing on the pioneering research conducted at the Butantan Institute in Brazil, the optimization of the antigen encapsulation yield is reported, as well as their distribution inside the meso- and macroporous network of the porous silica. As the development of vaccines requires proper inclusion of antigens in the antibody cells, X-ray crystallography is one of the most commonly used techniques to unveil the structure of antibody-combining sites with protein antigens. Thus structural characterization and modelling of pure antigen structures, showing different dimensions, as well as their complexes, such as silica with encapsulated hepatitis B virus-like particles and diphtheria anatoxin, were performed using small-angle X-ray scattering, X-ray absorption spectroscopy, X-ray phase contrast tomography, and neutron and X-ray imaging. By combining crystallography with dynamic light scattering and transmission electron microscopy, a clearer picture of the proposed vaccine complexes is shown. Additionally, the stability of the immunogenic complex at different pH values and temperatures was checked and the efficacy of the proposed oral immunogenic complex was demonstrated. The latter was obtained by comparing the antibodies in mice with variable high and low antibody responses.
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Affiliation(s)
| | | | | | - Tereza da Silva Martins
- Chemistry Department, Federal University of São Paulo, Rua São Nicolau, 210, 2o andar, Diadema, SP 09913-030, Brazil
| | - Milena Apetito Akamatsu
- Bioindustrial Center, Butantan Institute, Avenida Vital Brazil, 1500, São Paulo, SP 05503-900, Brazil
| | - Aryene Góes Trezena
- Immunogenetic Laboratory, Butantan Institute, Avenida Vital Brazil, 1500, São Paulo, SP 05503-900, Brazil
| | - Milene Tino-De- Franco
- Immunogenetic Laboratory, Butantan Institute, Avenida Vital Brazil, 1500, São Paulo, SP 05503-900, Brazil
| | - Viviane Fongaro Botosso
- Virology Laboratory, Butantan Institute, Avenida Vital Brazil, 1500, São Paulo, SP 05503-900, Brazil
| | | | - Nikolay Kardjilov
- HZB für Materialien und Energie, Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | | | - Heloísa Nunes Bordallo
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
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8
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Carvalho de Abreu Fantini M, Pinto Oliveira CL, de Souza Lopes JL, da Silva Martins T, Akamatsu MA, Trezena AG, de Franco MT, Botosso VF, Sant'Anna OABE, Kardjilov N, Rasmussen MK, Nunes Bordallo H. Using crystallography tools to improve vaccine formulations. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321096379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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9
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Araujo DB, Machado RRG, Amgarten DE, Malta FDM, de Araujo GG, Monteiro CO, Candido ED, Soares CP, de Menezes FG, Pires ACC, Santana RAF, Viana ADO, Dorlass E, Thomazelli L, Ferreira LCDS, Botosso VF, Carvalho CRG, Oliveira DBL, Pinho JRR, Durigon EL. SARS-CoV-2 isolation from the first reported patients in Brazil and establishment of a coordinated task network. Mem Inst Oswaldo Cruz 2020; 115:e200342. [PMID: 33111751 PMCID: PMC7586445 DOI: 10.1590/0074-02760200342] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/24/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was confirmed in Brazil in February 2020, the first cases were followed by an increase in the number of cases throughout the country, resulting in an important public health crisis that requires fast and coordinated responses. OBJECTIVES The objective of this work is to describe the isolation and propagation properties of SARS-CoV-2 isolates from the first confirmed cases of coronavirus disease 2019 (COVID-19) in Brazil. METHODS After diagnosis in patients that returned from Italy to the São Paulo city in late February by RT-PCR, SARS-CoV-2 isolates were obtained in cell cultures and characterised by full genome sequencing, electron microscopy and in vitro replication properties. FINDINGS The virus isolate was recovered from nasopharyngeal specimen, propagated in Vero cells (E6, CCL-81 and hSLAM), with clear cytopathic effects, and characterised by full genome sequencing, electron microscopy and in vitro replication properties. Virus stocks - viable (titre 2.11 × 106 TCID50/mL, titre 1.5 × 106 PFUs/mL) and inactivated from isolate SARS.CoV2/SP02.2020.HIAE.Br were prepared and set available to the public health authorities and the scientific community in Brazil and abroad. MAIN CONCLUSION We believe that the protocols for virus growth and studies here described and the distribution initiative may constitute a viable model for other developing countries, not only to help a rapid effective pandemic response, but also to facilitate and support basic scientific research.
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Affiliation(s)
- Danielle Bastos Araujo
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil.,Hospital Israelita Albert Einstein, São Paulo, SP, Brasil
| | | | | | | | - Gabriel Guarany de Araujo
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil
| | - Cairo Oliveira Monteiro
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil
| | - Erika Donizetti Candido
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil
| | - Camila Pereira Soares
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil
| | | | | | | | - Amanda de Oliveira Viana
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil
| | - Erick Dorlass
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil
| | - Luciano Thomazelli
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil
| | | | - Viviane Fongaro Botosso
- Instituto Butantã, Centro de Inovação e Desenvolvimento, Laboratório de Virologia, São Paulo, SP, Brasil
| | | | - Danielle Bruna Leal Oliveira
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil.,Hospital Israelita Albert Einstein, São Paulo, SP, Brasil.,Instituto Butantã, Centro de Inovação e Desenvolvimento, Laboratório de Virologia, São Paulo, SP, Brasil
| | - João Renato Rebello Pinho
- Hospital Israelita Albert Einstein, São Paulo, SP, Brasil.,Universidade de São Paulo, Faculdade de Medicina, Departamento de Patologia, Laboratório de Medicina Laboratorial (LIM/03), São Paulo, SP, Brasil.,Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, Laboratório de Gastroenterologia Clínica e Experimental (LIM/07), São Paulo, SP, Brasil
| | - Edison Luiz Durigon
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brasil.,Plataforma Científica Pasteur-USP, São Paulo, SP, Brasil
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10
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Dorlass EG, Monteiro CO, Viana AO, Soares CP, Machado RRG, Thomazelli LM, Araujo DB, Leal FB, Candido ED, Telezynski BL, Valério CA, Chalup VN, Mello R, Almeida FJ, Aguiar AS, Barrientos ACM, Sucupira C, De Paulis M, Sáfadi MAP, Silva DGBP, Sodré JJM, Soledade MP, Matos SF, Ferreira SR, Pinez CMN, Buonafine CP, Pieroni LNF, Malta FM, Santana RAF, Souza EC, Fock RA, Pinho JRR, Ferreira LCS, Botosso VF, Durigon EL, Oliveira DBL. Lower cost alternatives for molecular diagnosis of COVID-19: conventional RT-PCR and SYBR Green-based RT-qPCR. Braz J Microbiol 2020; 51:1117-1123. [PMID: 32767275 PMCID: PMC7411266 DOI: 10.1007/s42770-020-00347-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/22/2020] [Indexed: 11/25/2022] Open
Abstract
In March 2020, WHO declared a pandemic state due to SARS-CoV-2 having spread. TaqMan-based real-time RT-qPCR is currently the gold standard for COVID-19 diagnosis. However, it is a high-cost assay, inaccessible for the majority of laboratories around the world, making it difficult to diagnose on a large scale. The objective of this study was to standardize lower cost molecular methods for SARS-CoV-2 identification. E gene primers previously determined for TaqMan assays by Colman et al. (2020) were adapted in SYBR Green assay and RT-PCR conventional. The cross-reactivity test was performed with 17 positive samples for other respiratory viruses, and the sensibility test was performed with 8 dilutions (10 based) of SARS-CoV-2 isolated and 63 SARS-CoV-2-positive samples. The SYBR Green assays and conventional RT-PCR have not shown amplification of the 17 respiratory samples positives for other viruses. The SYBR Green-based assay was able to detect all 8 dilutions of the isolate. The conventional PCR detected until 107 dilution, both assays detected the majority of the 63 samples, 98.42% of positivity in SYBR Green, and 93% in conventional PCR. The average Ct variation between SYBR Green and TaqMan was 1.92 and the highest Ct detected by conventional PCR was 35.98. Both of the proposed assays are less sensitive than the current gold standard; however, our data shows a low sensibility variation, suggesting that these methods could be used by laboratories as a lower cost molecular method for SARS-CoV-2 diagnosis.
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Affiliation(s)
- Erick Gustavo Dorlass
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Cairo Oliveira Monteiro
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Amanda Oliveira Viana
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Camila Pereira Soares
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | | | - Danielle Bastos Araujo
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Fabyano Bruno Leal
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.,Development and Innovation Center, Laboratory of Virology, Butantan Institute, São Paulo, Brazil
| | - Erika Donizette Candido
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Bruna Larotonda Telezynski
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Camila Araujo Valério
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Vanessa Nascimento Chalup
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Ralyria Mello
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Flavia Jaqueline Almeida
- Department of Pediatrics, School of Medical Sciences, Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | - Andressa Simões Aguiar
- Infection Control Service, São Luiz Gonzaga Hospital of Santa Casa de Misericordia of São Paulo, São Paulo, Brazil.,Infection Control Service and Epidemiological Hospital Nucleo, Municipal Children's Hospital Candido Fontoura, São Paulo, Brazil
| | | | - Carolina Sucupira
- Infection Control Service and Epidemiological Hospital Nucleo, Municipal Children's Hospital Candido Fontoura, São Paulo, Brazil
| | - Milena De Paulis
- Department of Pediatrics, University Hospital, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Marco Aurélio Palazzi Sáfadi
- Department of Pediatrics, School of Medical Sciences, Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | | | | | - Mariana Pereira Soledade
- Infection Control Service and Epidemiological Hospital Nucleo, Municipal Children's Hospital Candido Fontoura, São Paulo, Brazil
| | - Samantha Faria Matos
- Department of Pediatrics, School of Medical Sciences, Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | | | - Célia Miranda Nunez Pinez
- Clinical Laboratory Division, Pharmacy and Clinical Laboratory Department, University Hospital, University of São Paulo, São Paulo, Brazil
| | - Carolina Palamin Buonafine
- Department of Pediatrics, School of Medical Sciences, Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | | | | | | | - Eloisa Corrêa Souza
- Department of Pediatrics, University Hospital, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Ricardo Ambrosio Fock
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.,Clinical Laboratory Division, Pharmacy and Clinical Laboratory Department, University Hospital, University of São Paulo, São Paulo, Brazil
| | - João Renato Rebelo Pinho
- Clinical Laboratory, Hospital Israelita Albert Einstein, São Paulo, Brazil.,LIM03/07 Clinics Hospital, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Luís Carlos Souza Ferreira
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Viviane Fongaro Botosso
- Development and Innovation Center, Laboratory of Virology, Butantan Institute, São Paulo, Brazil
| | - Edison Luiz Durigon
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.,Scientific Platform Pasteur USP, São Paulo, Brazil
| | - Danielle Bruna Leal Oliveira
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil. .,Development and Innovation Center, Laboratory of Virology, Butantan Institute, São Paulo, Brazil. .,Clinical and Molecular Virology Laboratory, University of São Paulo, Av. Prof. Lineu Prestes 1374, São Paulo, SP, 05508-900, Brazil.
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11
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Rasmussen MK, Kardjilov N, Oliveira CLP, Watts B, Villanova J, Botosso VF, Sant'Anna OA, Fantini MCA, Bordallo HN. 3D visualisation of hepatitis B vaccine in the oral delivery vehicle SBA-15. Sci Rep 2019; 9:6106. [PMID: 30988384 PMCID: PMC6465313 DOI: 10.1038/s41598-019-42645-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 04/04/2019] [Indexed: 11/09/2022] Open
Abstract
Developing a technology that enables oral vaccines to work efficiently remains a considerable effort since a number of difficulties must be addressed. The key objective being to ensure the safe passage through the harsh conditions within the gastrointestinal tract, promoting delivery that induces enhanced immune response. In the particular case of hepatitis B, the oral formulation in the nanostructured silica SBA-15 is a viable approach. As a result of its porous structure, low toxicity and structural stability, SBA-15 is capable to protect and release the hepatitis B surface antigen (HBsAg), used in the vaccination scheme, at the desired destination. Furthermore, when compared to the currently used injection based delivery method, better or similar antibody response has been observed. However, information about the organisation of the antigen protein remains unknown. For instance, HBsAg is too large to enter the 10 nm ordered mesopores of SBA-15 and has a tendency to agglomerate when protected by the delivery system. Here we report on the pH dependence of HBsAg aggregation in saline solution investigated using small angle X-rays scattering that resulted in an optimisation of the encapsulation conditions. Additionally, X-ray microscopy combined with neutron and X-ray tomography provided full 3D information of the HBsAg clustering (i.e. agglomeration) inside the SBA-15 macropores. This method enables the visualisation of the organisation of the antigen in the interior of the delivery system, where agglomerated HBsAg coexists with its immunological effective uniformly distributed counterpart. This new approach, to be taken into account while preparing the formulation, can greatly help in the understanding of clinical studies and advance new formulations.
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Affiliation(s)
- Martin K Rasmussen
- Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.,Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | | | | | | | | | | | | | | | - Heloisa N Bordallo
- Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark. .,European Spallation Source (ESS), Lund, Sweden.
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12
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Rocha LB, Alves RPDS, Caetano BA, Pereira LR, Mitsunari T, Amorim JH, Polatto JM, Botosso VF, Gallina NMF, Palacios R, Precioso AR, Granato CFH, Oliveira DBL, Silveira VBD, Luz D, Ferreira LCDS, Piazza RMF. Epitope Sequences in Dengue Virus NS1 Protein Identified by Monoclonal Antibodies. Antibodies (Basel) 2017; 6:antib6040014. [PMID: 31548529 PMCID: PMC6698852 DOI: 10.3390/antib6040014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/22/2017] [Accepted: 09/22/2017] [Indexed: 11/17/2022] Open
Abstract
Dengue nonstructural protein 1 (NS1) is a multi-functional glycoprotein with essential functions both in viral replication and modulation of host innate immune responses. NS1 has been established as a good surrogate marker for infection. In the present study, we generated four anti-NS1 monoclonal antibodies against recombinant NS1 protein from dengue virus serotype 2 (DENV2), which were used to map three NS1 epitopes. The sequence 193AVHADMGYWIESALNDT209 was recognized by monoclonal antibodies 2H5 and 4H1BC, which also cross-reacted with Zika virus (ZIKV) protein. On the other hand, the sequence 25VHTWTEQYKFQPES38 was recognized by mAb 4F6 that did not cross react with ZIKV. Lastly, a previously unidentified DENV2 NS1-specific epitope, represented by the sequence 127ELHNQTFLIDGPETAEC143, is described in the present study after reaction with mAb 4H2, which also did not cross react with ZIKV. The selection and characterization of the epitope, specificity of anti-NS1 mAbs, may contribute to the development of diagnostic tools able to differentiate DENV and ZIKV infections.
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Affiliation(s)
| | - Rubens Prince Dos Santos Alves
- Laboratório de Desenvolvimento de Vacinas, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, 05508-000, SP, Brazil.
| | - Bruna Alves Caetano
- Laboratório de Bacteriologia, Instituto Butantan, São Paulo, 05503-900 SP, Brazil.
| | - Lennon Ramos Pereira
- Laboratório de Desenvolvimento de Vacinas, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, 05508-000, SP, Brazil.
| | - Thais Mitsunari
- Laboratório de Bacteriologia, Instituto Butantan, São Paulo, 05503-900 SP, Brazil.
| | - Jaime Henrique Amorim
- Laboratório de Desenvolvimento de Vacinas, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, 05508-000, SP, Brazil.
| | | | | | | | - Ricardo Palacios
- Divisão de Ensaios Clínicos e Farmacovigilância, Instituto Butantan, São Paulo, 05503-900, SP, Brazil.
| | | | - Celso Francisco Hernandes Granato
- Departamento de Medicina, Disciplina de Doenças Infecciosas e Parasitárias, Universidade Federal de São Paulo, São Paulo, 04023-062, SP, Brazil.
| | - Danielle Bruna Leal Oliveira
- Laboratório de Virologia Molecular e Clínica, Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, 05508-000, SP, Brazil.
| | - Vanessa Barbosa da Silveira
- Laboratório de Virologia Molecular e Clínica, Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, 05508-000, SP, Brazil.
| | - Daniela Luz
- Laboratório de Bacteriologia, Instituto Butantan, São Paulo, 05503-900 SP, Brazil.
| | - Luís Carlos de Souza Ferreira
- Laboratório de Desenvolvimento de Vacinas, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, 05508-000, SP, Brazil.
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13
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Mesquita FDS, Oliveira DBLD, Crema D, Pinez CMN, Colmanetti TC, Thomazelli LM, Gilio AE, Vieira SE, Martinez MB, Botosso VF, Durigon EL. Rapid antigen detection test for respiratory syncytial virus diagnosis as a diagnostic tool. Jornal de Pediatria (Versão em Português) 2017. [DOI: 10.1016/j.jpedp.2016.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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14
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Mesquita FDS, Oliveira DBLD, Crema D, Pinez CMN, Colmanetti TC, Thomazelli LM, Gilio AE, Vieira SE, Martinez MB, Botosso VF, Durigon EL. Rapid antigen detection test for respiratory syncytial virus diagnosis as a diagnostic tool. J Pediatr (Rio J) 2017; 93:246-252. [PMID: 27889321 DOI: 10.1016/j.jped.2016.06.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 06/16/2016] [Accepted: 06/19/2016] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the QuickVue® RSV Test Kit (QUIDEL Corp, CA, USA) as a screening tool for respiratory syncytial virus in children with acute respiratory disease in comparison with the indirect immunofluorescence assay as gold standard. In Brazil, rapid antigen detection tests for respiratory syncytial virus are not routinely utilized as a diagnostic tool, except for the diagnosis of dengue and influenza. METHODS The authors retrospectively analyzed 486 nasopharyngeal aspirate samples from children under age 5 with acute respiratory infection, between December 2013 and August 2014, the samples were analyzed by indirect immunofluorescence assay and QuickVue® RSV Test kit. Samples with discordant results were analyzed by real time PCR and nucleotide sequencing. RESULTS From 313 positive samples by immunofluorescence assays, 282 (90%) were also positive by the rapid antigen detection test, two were positive only by rapid antigen detection test, 33 were positive only by immunofluorescence assays, and 171 were positive by both methods. The 35 samples with discordant results were analyzed by real time PCR; the two samples positive only by rapid antigen detection test and the five positive only by immunofluorescence assays were also positive by real time PCR. There was no relation between the negativity by QuickVue® RSV Test and viral load or specific strain. The QuickVue® RSV Test showed sensitivity of 90%, specificity of 98.8%, predictive positive value of 99.3%, and negative predictive value of 94.6%, with accuracy of 93.2% and agreement κ index of 0.85 in comparison to immunofluorescence assay. CONCLUSIONS This study demonstrated that the QuickVue® RSV Test Kit can be effective in early detection of Respiratory syncytial virus in nasopharyngeal aspirate and is reliable for use as a diagnostic tool in pediatrics.
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Affiliation(s)
- Flávio da Silva Mesquita
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brazil
| | | | - Daniela Crema
- Universidade de São Paulo, Hospital Universitário, Laboratório Clínico, São Paulo, SP, Brazil
| | | | - Thaís Cristina Colmanetti
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brazil
| | - Luciano Matsumia Thomazelli
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brazil
| | - Alfredo Elias Gilio
- Universidade de São Paulo, Hospital Universitário, Divisão de Pediatria, São Paulo, SP, Brazil
| | - Sandra Elisabeth Vieira
- Universidade de São Paulo, Hospital Universitário, Divisão de Pediatria, São Paulo, SP, Brazil
| | - Marina Baquerizo Martinez
- Universidade de São Paulo, Hospital Universitário, Laboratório Clínico, São Paulo, SP, Brazil; Universidade de São Paulo, Escola de Ciências Farmacêuticas, São Paulo, SP, Brazil
| | - Viviane Fongaro Botosso
- Instituto Butantan, Laboratório de Virologia, Divisão de Desenvolvimento Científico, São Paulo, SP, Brazil
| | - Edison Luiz Durigon
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP, Brazil
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Durigon EL, Botosso VF, de Oliveira DBL. Human Respiratory Syncytial Virus: Biology, Epidemiology, and Control. Human Virology in Latin America 2017. [PMCID: PMC7121549 DOI: 10.1007/978-3-319-54567-7_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Moraes CTP, Oliveira DBL, Campos ACA, Bosso PA, Lima HN, Stewien KE, Gilio AE, Vieira SE, Botosso VF, Durigon EL. Genetic variability in G2 and F2 region between biological clones of human respiratory syncytial virus with or without host immune selection pressure. Mem Inst Oswaldo Cruz 2015; 110:138-41. [PMID: 25742274 PMCID: PMC4371228 DOI: 10.1590/0074-02760140299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 12/18/2014] [Indexed: 11/22/2022] Open
Abstract
Human respiratory syncytial virus (HRSV) is an important respiratory pathogens among
children between zero-five years old. Host immunity and viral genetic variability are
important factors that can make vaccine production difficult. In this work,
differences between biological clones of HRSV were detected in clinical samples in
the absence and presence of serum collected from children in the convalescent phase
of the illness and from their biological mothers. Viral clones were selected by
plaque assay in the absence and presence of serum and nucleotide sequences of the G2
and F2 genes of HRSV biological clones were compared. One non-synonymous mutation was
found in the F gene (Ile5Asn) in one clone of an HRSV-B sample and one non-synonymous
mutation was found in the G gene (Ser291Pro) in four clones of the same HRSV-B
sample. Only one of these clones was obtained after treatment with the child's serum.
In addition, some synonymous mutations were determined in two clones of the HRSV-A
samples. In conclusion, it is possible that minor sequences could be selected by host
antibodies contributing to the HRSV evolutionary process, hampering the development
of an effective vaccine, since we verify the same codon alteration in absence and
presence of human sera in individual clones of BR-85 sample.
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Scaramuzzi K, Oliveira DCA, Carvalho LV, Tambourgi DV, Tenório ECN, Rizzi M, Mussalem J, Fantini MCDA, Botosso VF, Sant´Anna OA. Nanostructured SBA-15 silica as an adjuvant in immunizations with hepatitis B vaccine. Einstein (São Paulo) 2011; 9:436-41. [DOI: 10.1590/s1679-45082011ao2162] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 10/25/2011] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT Objective: To evaluate the applicability of SBA-15 silica as an adjuvant in immunizations with purified particles of the viral protein HBsAg, the main component of hepatitis B vaccine, Butang®, produced by Instituto Butantan. Methods: BALB/c mice orally or subcutaneously received 0.5 μg of HBsAg adsorbed/encapsulated to SBA-15 or adsorbed to Al(OH)3. To assess the secondary immune response, a subcutaneous booster was administered 30 days after the first immunization. Individual serum and fecal samples of each group were periodically collected for specific antibody titration by ELISA. Results: Analysis of secretory IgA showed that mice orally primed with HBsAg on SBA-15 had increased levels of specific antibodies in primary and secondary immune responses. Specific serum IgA and IgG titers in HBsAg:SBA-15-orally immunized mice reached higher levels after the booster, demonstrating the effectiveness of oral vaccination with the use of silica. All immunized groups showed higher IgG1 levels. Conclusion: Our results clearly indicate the promising use of SBA-15 as an adjuvant, especially in oral immunizations.
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Lima HN, Botosso VF, Oliveira DBL, Campos ACDA, Leal AL, Silva TS, Bosso PAR, Moraes CTP, Filho CGDS, Vieira SE, Gilio AE, Stewien KE, Durigon EL. Molecular epidemiology of the SH (small hydrophobic) gene of human respiratory syncytial virus (HRSV), over 2 consecutive years. Virus Res 2011; 163:82-6. [PMID: 21893117 DOI: 10.1016/j.virusres.2011.08.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2010] [Revised: 08/19/2011] [Accepted: 08/22/2011] [Indexed: 11/17/2022]
Abstract
Human respiratory syncytial virus (HRSV) strains were isolated from nasopharyngeal aspirates collected from 965 children between 2004 and 2005, yielding 424 positive samples. We sequenced the small hydrophobic protein (SH) gene of 117 strains and compared them with other viruses identified worldwide. Phylogenetic analysis showed a low genetic variability among the isolates but allowed us to classify the viruses into different genotypes for both groups, HRSVA and HRSVB. It is also shown that the novel BA-like genotype was well segregated from the others, indicating that the mutations are not limited to the G gene.
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Affiliation(s)
- Hildenêr Nogueira Lima
- Instituto de Ciências Biomédicas, Universidade de São Paulo, Av. Prof. Lineu Prestes 1374, 05508-900 São Paulo, SP, Brazil
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De Paulis M, Gilio AE, Ferraro AA, Ferronato AE, do Sacramento PR, Botosso VF, Oliveira DBLD, Marinheiro JC, Hársi CM, Durigon EL, Vieira SE. Severity of viral coinfection in hospitalized infants with respiratory syncytial virus infection. J Pediatr (Rio J) 2011; 87:307-13. [PMID: 21655684 DOI: 10.2223/jped.2100] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Accepted: 03/30/2011] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE To compare the severity of single respiratory syncytial virus (RSV) infections with that of coinfections. METHODS A historical cohort was studied, including hospitalized infants with acute RSV infection. Nasopharyngeal aspirate samples were collected from all patients to detect eight respiratory viruses using molecular biology techniques. The following outcomes were analyzed: duration of hospitalization and of oxygen therapy, intensive care unit admission and need of mechanical ventilation. Results were adjusted for confounding factors (prematurity, age and breastfeeding). RESULTS A hundred and seventy six infants with bronchiolitis and/or pneumonia were included in the study. Their median age was 4.5 months. A hundred and twenty one had single RSV infection and 55 had coinfections (24 RSV + adenovirus, 16 RSV + human metapneumovirus and 15 other less frequent viral associations). The four severity outcomes under study were similar in the group with single RSV infection and in the coinfection groups, independently of what virus was associated with RSV. CONCLUSION Virus coinfections do not seem to affect the prognosis of hospitalized infants with acute RSV infection.
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Affiliation(s)
- Milena De Paulis
- Hospital Universitário, Universidade de São Paulo (USP), São Paulo, SP, Brazil
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do Nascimento CA, Leal AL, Souza TS, de Moraes CTP, Comone P, Tenório ECN, Vedovello D, Quinzani RHA, Gilio AE, Vieira SE, Durigon EL, Botosso VF, Sant'Anna OA. One-step reverse transcriptase polymerase chain reaction for the diagnosis of respiratory syncytial virus in children. J Virol Methods 2008; 148:115-9. [PMID: 18068812 DOI: 10.1016/j.jviromet.2007.10.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2006] [Revised: 10/22/2007] [Accepted: 10/26/2007] [Indexed: 10/22/2022]
Abstract
Human respiratory syncytial virus (HRSV) is the main cause of acute lower respiratory tract infections in infants and children. Rapid diagnosis is required to permit appropriate care and treatment and to avoid unnecessary antibiotic use. Reverse transcriptase (RT-PCR) and indirect immunofluorescence assay (IFA) methods have been considered important tools for virus detection due to their high sensitivity and specificity. In order to maximize use-simplicity and minimize the risk of sample cross-contamination inherent in two-step techniques, a RT-PCR method using only a single tube to detect HRSV in clinical samples was developed. Nasopharyngeal aspirates from 226 patients with acute respiratory illness, ranging from infants to 5 years old, were collected at the University Hospital of the University of Sao Paulo (HU-USP), and tested using IFA, one-step RT-PCR, and semi-nested RT-PCR. One hundred and two (45.1%) samples were positive by at least one of the three methods, and 75 (33.2%) were positive by all methods: 92 (40.7%) were positive by one-step RT-PCR, 84 (37.2%) by IFA, and 96 (42.5%) by the semi-nested RT-PCR technique. One-step RT-PCR was shown to be fast, sensitive, and specific for RSV diagnosis, without the added inconvenience and risk of false positive results associated with semi-nested PCR. The combined use of these two methods enhances HRSV detection.
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Perini AP, Barbosa ML, Botosso VF, de Moraes CTP, Gillio AE, Hens N, Stewien KE, Durigon EL. Comparison of HeLa-I, HEp-2 and NCI-H292 cell lines for the isolation of human respiratory syncytial virus (HRSV). J Virol Methods 2007; 146:368-71. [PMID: 17825929 DOI: 10.1016/j.jviromet.2007.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2006] [Revised: 07/06/2007] [Accepted: 07/10/2007] [Indexed: 10/22/2022]
Abstract
Generally, laboratory diagnosis of viral respiratory infections utilizes virus isolation in cell culture and immunofluorescence assays. In this study, three cell lines (HEp-2, NCI-H292 and HeLa-I) were used for HRSV isolation of strains obtained from patients admitted at HU-USP with respiratory tract disease. HRSV was isolated in 46% (37) of 80 specimens inoculated in HeLa-I, 48% (39) in HEp-2, and 36.3% (29) in NCI-H292. Immunofluorescence was considered the gold standard and yielded 53% positive (43). The results from both methods combined had better sensitivity (73.2%) compared to either method alone. Comparing results between the cell lines with HEp-2 cells as the benchmark, the greatest sensitivity (72.2%) was observed in HeLa-I. This data shows that HeLa-I is adequate for HRSV isolation, giving results similar to the HEp-2 cells. The combined use of the HEp-2, HeLa-I and NCI-H292 cells improve the detection of HRSV.
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Affiliation(s)
- Ana Priscila Perini
- Universidade de São Paulo, Instituto de Ciências Biomédicas, São Paulo, Brazil
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Campos ACDA, Durigon EL, Leal AL, Silva TS, Bosso PAR, Moraes CTP, Oliveira DBL, Lima HN, Vieira SE, Botosso VF, Zanotto PMDA, Stewien KE. Comparison between ectodomain and G2 region of G glycoprotein for genotyping of HRSV. Braz J Microbiol 2007. [DOI: 10.1590/s1517-83822007000300005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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Queiróz DAO, Durigon EL, Botosso VF, Ejzemberg B, Vieira SE, Mineo JR, Yamashita C, Hein N, Lopes CL, Cacharo AL, Stewien KE. Immune response to respiratory syncytial virus in young Brazilian children. Braz J Med Biol Res 2002; 35:1183-93. [PMID: 12424491 DOI: 10.1590/s0100-879x2002001000011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We have evaluated the cellular and humoral immune response to primary respiratory syncytial virus (RSV) infection in young infants. Serum specimens from 65 patients <=12 months of age (39 males and 26 females, 28 cases <3 months and 37 cases > or = 3 months; median 3 3.9 months) were tested for anti-RSV IgG and IgG subclass antibodies by EIA. Flow cytometry was used to characterize cell surface markers expressed on peripheral blood mononuclear cells (PBMC) from 29 RSV-infected children. There was a low rate of seroconversion in children <3 months of age, whose acute-phase PBMC were mostly T lymphocytes (63.0 +/- 9.0%). In contrast, a higher rate of seroconversion was observed in children >3 months of age, with predominance of B lymphocytes (71.0 +/- 17.7%). Stimulation of PBMC with RSV (2 x 10(5) TCID50) for 48 h did not induce a detectable increase in intracellular cytokines and only a few showed a detectable increase in RSV-specific secreted cytokines. These data suggest that age is an important factor affecting the infants' ability to develop an immune response to RSV.
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Affiliation(s)
- D A O Queiróz
- Departamento de Imunologia, Microbiologia e Parasitologia, Instituto de Ci ncias Biom dicas, Universidade Federal de Uberl ndia, Uberl ndia, MG, Brasil.
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Vieira SE, Stewien KE, Queiroz DA, Durigon EL, Török TJ, Anderson LJ, Miyao CR, Hein N, Botosso VF, Pahl MM, Gilio AE, Ejzenberg B, Okay Y. Clinical patterns and seasonal trends in respiratory syncytial virus hospitalizations in São Paulo, Brazil. Rev Inst Med Trop Sao Paulo 2001; 43:125-31. [PMID: 11452319 DOI: 10.1590/s0036-46652001000300002] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The respiratory viruses are recognized as the most frequent lower respiratory tract pathogens for infants and young children in developed countries but less is known for developing populations. The authors conducted a prospective study to evaluate the occurrence, clinical patterns, and seasonal trends of viral infections among hospitalized children with lower respiratory tract disease (Group A). The presence of respiratory viruses in children's nasopharyngeal was assessed at admission in a pediatric ward. Cell cultures and immunofluorescence assays were used for viral identification. Complementary tests included blood and pleural cultures conducted for bacterial investigation. Clinical data and radiological exams were recorded at admission and throughout the hospitalization period. To better evaluate the results, a non- respiratory group of patients (Group B) was also constituted for comparison. Starting in February 1995, during a period of 18 months, 414 children were included- 239 in Group A and 175 in Group B. In Group A, 111 children (46.4%) had 114 viruses detected while only 5 children (2.9%) presented viruses in Group B. Respiratory Syncytial Virus was detected in 100 children from Group A (41.8%), Adenovirus in 11 (4.6%), Influenza A virus in 2 (0.8%), and Parainfluenza virus in one child (0.4%). In Group A, aerobic bacteria were found in 14 cases (5.8%). Respiratory Syncytial Virus was associated to other viruses and/or bacteria in six cases. There were two seasonal trends for Respiratory Syncytial Virus cases, which peaked in May and June. All children affected by the virus were younger than 3 years of age, mostly less than one year old. Episodic diffuse bronchial commitment and/or focal alveolar condensation were the clinical patterns more often associated to Respiratory Syncytial Virus cases. All children from Group A survived. In conclusion, it was observed that Respiratory Syncytial Virus was the most frequent pathogen found in hospitalized children admitted for severe respiratory diseases. Affected children were predominantly infants and boys presenting bronchiolitis and focal pneumonias. Similarly to what occurs in other subtropical regions, the virus outbreaks peak in the fall and their occurrence extends to the winter, which parallels an increase in hospital admissions due to respiratory diseases.
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Affiliation(s)
- S E Vieira
- Pediatrics Division, University Hospital, University of São Paulo, São Paulo, SP, Brazil
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Stewien KE, Lima LRDAVD, Botosso VF, Oliveira MID, Fagundes SN, Nogueira MB, Ragazzi SLB, Costa MTZD, Ejzenberg B, Durigon EL. Clinical and Laboratory evaluation of measleslike rash in children and young adults. Braz J Microbiol 2000. [DOI: 10.1590/s1517-83822000000400008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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