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Siqueira Ferreira JM, Abrahão JS, Drumond BP, Oliveira FM, Alves PA, Pascoal-Xavier MA, Portela Lobato ZI, Bonjardim CA, Peregrino Ferreira PC, Kroon EG. Corrigendum: Vaccinia virus: shedding and horizontal transmission in a murine model. J Gen Virol 2021; 102. [PMID: 34515627 DOI: 10.1099/jgv.0.001650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Jaqueline Maria Siqueira Ferreira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Jônatas Santos Abrahão
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Betânia Paiva Drumond
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Fernando Meireles Oliveira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Pedro Augusto Alves
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Marcelo Antônio Pascoal-Xavier
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Zélia Inês Portela Lobato
- Laboratório de Vírus, Departamento de Medicina Veterinâria Preventiva, Escola de Veterinâria, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Cláudio Antônio Bonjardim
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Paulo César Peregrino Ferreira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Erna Geessien Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida António Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil
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Abrahão JS, Drumond BP, Trindade GDS, Silva-Fernandes ATD, Ferreira JMS, Alves PA, Campos RK, Siqueira L, Bonjardim CA, Ferreira PCP, Kroon EG. Corrigendum. J Med Virol 2021; 93:6424. [PMID: 34251724 DOI: 10.1002/jmv.27193] [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: 11/10/2022]
Affiliation(s)
- Jônatas Santos Abrahão
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Betânia Paiva Drumond
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Giliane de Souza Trindade
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - André Tavares da Silva-Fernandes
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jaqueline Maria Siqueira Ferreira
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Pedro Augusto Alves
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rafael Kroon Campos
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Larissa Siqueira
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Cláudio Antônio Bonjardim
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Paulo César Peregrino Ferreira
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Erna Geessien Kroon
- Laboratorio de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Costa GB, Miranda JB, Almeida GG, Silva de Oliveira J, Pinheiro MS, Gonçalves SA, Pimenta Dos Reis JK, Gonçalves R, Ferreira PCP, Bonjardim CA, Abrahão JS, Kroon EG, Trindade GDS. Detection of Vaccinia Virus in Urban Domestic Cats, Brazil. Emerg Infect Dis 2017; 23:360-362. [PMID: 28098542 PMCID: PMC5324812 DOI: 10.3201/eid2302.161341] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 01/01/2023] Open
Abstract
We investigated possible vaccinia virus (VACV) in urban house cats in Brazil. Serum samples from 6 cats were positive for VACV by PCR, indicating likely VACV circulation among house cats in urban areas of Brazil. This finding highlights the importance of epidemiologic surveillance to avoid outbreaks among urban human populations.
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Franco-Luiz APM, Oliveira DB, Pereira AF, Gasparini MCS, Bonjardim CA, Ferreira PCP, Trindade GDS, Puentes R, Furtado A, Abrahão JS, Kroon EG. Detection of Vaccinia Virus in Dairy Cattle Serum Samples from 2009, Uruguay. Emerg Infect Dis 2016; 22:2174-2177. [PMID: 27869601 PMCID: PMC5189138 DOI: 10.3201/eid2212.160447] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 12/11/2022] Open
Abstract
We detected orthopoxvirus in 28 of 125 serum samples collected during 2009 from cattle in Uruguay. Two samples were PCR-positive for vaccinia virus and had sequences similar to those for vaccinia virus associated with outbreaks in Brazil. Autochthonous circulation of vaccinia virus in Uruguay and other South American countries cannot be ruled out.
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Costa GB, Augusto LTS, Leite JA, Ferreira PCP, Bonjardim CA, Abrahão JS, Kroon EG, Moreno EC, Trindade GDS. Seroprevalence of Orthopoxvirus in rural Brazil: insights into anti-OPV immunity status and its implications for emergent zoonotic OPV. Virol J 2016; 13:121. [PMID: 27377374 PMCID: PMC4932698 DOI: 10.1186/s12985-016-0575-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 02/25/2016] [Accepted: 06/28/2016] [Indexed: 11/25/2022] Open
Abstract
Background Bovine vaccinia (BV) is a zoonosis caused by Vaccinia virus, a virus from Orthopoxvirus genus (OPV) that affects mainly cattle herds and humans in rural areas in Brazil. Because most studies have focused on outbreaks situations, data on BV epidemiology is limited. A cross sectional study in Brazilian rural areas during 2012–2013 was conducted to determine the neutralizing antibodies seroprevalence and risk factors for BV. Methods A structured questionnaire was applied to elicit demographics data and farming practices considered risk factors for BV exposure. Neutralizing anti-OPV antibodies were investigated using plaque reduction neutralization test. The neutralizing antibodies prevalence rates were calculated and the risk factor analysis was performed using multivariate logistic regression. Results Two hundred and forty participants were enrolled in this study with a prevalence of neutralizing antibodies of 30.8 % (95 % confidence interval [CI], 25.3–36.9). In multivariate analysis, age > 35 years (Odds Ratio [OR] = 18.2; CI 95 % = 7.7 – 43.2) and previous outbreak in property (OR = 3.9; C I95 % = 1.2 – 12.6) were independently associated with anti-OPV neutralizing antibodies. Conclusions In this study, anti-OPV protective immunity (neutralizing antibody titers) was assessed in an endemic BV Brazilian rural area. Our findings indicate that epidemiological surveillance is required and should be applied by public health authorities to create interventions and/or prevention strategies to avoid viral spread causing future outbreaks among individuals who are under risk of infection.
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Affiliation(s)
- Galileu Barbosa Costa
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. .,, Present address: Av Presidente Antônio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, CEP 31270-901, Brazil.
| | | | - Juliana Almeida Leite
- Respiratory Virus Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Paulo César Peregrino Ferreira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Cláudio Antônio Bonjardim
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Jônatas Santos Abrahão
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Erna Geessien Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Elizabeth Castro Moreno
- Fundação Centro de Hematologia e Hemoterapia de Minas Gerais (HEMOMINAS), Belo Horizonte, Brazil
| | - Giliane de Souza Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. .,, Present address: Av Presidente Antônio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, CEP 31270-901, Brazil.
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Franco-Luiz APM, Fagundes Pereira A, de Oliveira CHS, Barbosa JD, Oliveira DB, Bonjardim CA, Ferreira PCP, de Souza Trindade G, Abrahão JS, Kroon EG. The detection of Vaccinia virus confirms the high circulation of Orthopoxvirus in buffaloes living in geographical isolation, Marajó Island, Brazilian Amazon. Comp Immunol Microbiol Infect Dis 2016; 46:16-9. [PMID: 27260805 DOI: 10.1016/j.cimid.2016.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/04/2016] [Accepted: 03/09/2016] [Indexed: 11/18/2022]
Abstract
In Brazil, serologic evidence of Orthopoxvirus (OPV) circulation showed positivity around 20% in cattle, humans, monkeys and rodents. Although OPV seropositivity has been described in buffalo herds in southeastern Brazil, no Vaccinia virus (VACV) (member of genus OPV) outbreaks in buffalo herds have been described in this country. This study aimed to investigate the detection of anti-OPV antibodies and to study the OPV genome in Brazilian buffalo herds. Our results demonstrated a high OPV seropositivity in buffalo herds on Marajó Island and molecular data confirmed the circulation of VACV. The geographical isolation conditionmight be a sine qua non condition to explain our results.
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Affiliation(s)
- Ana Paula Moreira Franco-Luiz
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Alexandre Fagundes Pereira
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Cairo Henrique Sousa de Oliveira
- Setor de Medicina Veterinária Preventiva, Escola de Veterinária e Zootecnia da Universidade Federal de Goiás, Goiânia, GO, Brazil.
| | - José Diomedes Barbosa
- Hospital Veterinário de Grandes Animais, Instituto de Medicina Veterinária da Universidade Federal do Pará, Castanhal, PA, Brazil.
| | - Danilo Bretas Oliveira
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Cláudio Antônio Bonjardim
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Paulo César Peregrino Ferreira
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Giliane de Souza Trindade
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Jônatas Santos Abrahão
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | - Erna Geessien Kroon
- Laboratório de Vírus do Departamento de Microbiologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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Figueiredo PDO, Silva-Fernandes ATD, Mota BEF, Costa GB, Borges IA, Ferreira PCP, Abrahão JS, Braga EM, Kroon EG, Trindade GDS. Evaluating anti-Orthopoxvirus antibodies in individuals from Brazilian rural areas prior to the bovine vaccinia era. Mem Inst Oswaldo Cruz 2016; 110:804-8. [PMID: 26517662 PMCID: PMC4667586 DOI: 10.1590/0074-02760150215] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 06/08/2015] [Accepted: 07/13/2015] [Indexed: 12/24/2022] Open
Abstract
Vaccinia virus naturally circulates in Brazil and is the causative agent of a zoonotic disease known as bovine vaccinia (BV). We retrospectively evaluated two populations from the Amazon and Southeast Regions. BV outbreaks had not been reported in these regions before sample collection. Neutralising antibodies were found in 13 individuals (n = 132) with titres ranging from 100 ≥ 6,400 neutralising units/mL. Univariate analysis identified age and vaccination as statistically significant risk factors in individuals from the Southeast Region. The absence of detectable antibodies in vaccinated individuals raises questions about the protection of smallpox vaccine years after vaccination and reinforces the need for surveillance of Orthopoxvirus in Brazilian populations without evidence of previous outbreaks.
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Affiliation(s)
- Poliana de Oliveira Figueiredo
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - André Tavares da Silva-Fernandes
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Bruno Eduardo Fernandes Mota
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Galileu Barbosa Costa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Iara Apolinário Borges
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Paulo César Peregrino Ferreira
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Jônatas Santos Abrahão
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Erika Martins Braga
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Erna Geessien Kroon
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Giliane de Souza Trindade
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Oliveira DBD, Machado G, Almeida GMDF, Ferreira PCP, Bonjardim CA, Trindade GDS, Abrahão JS, Kroon EG. Infection of the central nervous system with dengue virus 3 genotype I causing neurological manifestations in Brazil. Rev Soc Bras Med Trop 2016; 49:125-9. [DOI: 10.1590/0037-8682-0208-2015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 08/19/2015] [Indexed: 11/22/2022] Open
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Abrahão JS, Campos RK, Trindade GDS, Guimarães da Fonseca F, Ferreira PCP, Kroon EG. Outbreak of severe zoonotic vaccinia virus infection, Southeastern Brazil. Emerg Infect Dis 2015; 21:695-8. [PMID: 25811411 PMCID: PMC4378504 DOI: 10.3201/eid2104.140351] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [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: 12/27/2022] Open
Abstract
In 2010, a vaccinia virus isolate caused an atypically severe outbreak that affected humans and cattle in Brazil. Of 26 rural workers affected, 12 were hospitalized. Our data raise questions about the risk factors related to the increasing number and severity of vaccinia virus infections.
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Oliveira DB, Machado G, Almeida GMF, Ferreira PCP, Bonjardim CA, de Souza Trindade G, Abrahão JS, Kroon EG. First fatal case of CNS infection caused by Enterovirus A in Brazil. New Microbes New Infect 2015; 7:94-6. [PMID: 26442151 PMCID: PMC4552807 DOI: 10.1016/j.nmni.2015.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 06/16/2015] [Accepted: 06/18/2015] [Indexed: 11/30/2022] Open
Abstract
We describe what is to our knowledge the first fatal case of central nervous system Enterovirus infection in Brazil. Molecular and phylogenetic characterization revealed that Enterovirus A was the aetiologic agent of this case.
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Affiliation(s)
- D B Oliveira
- Laboratório de Vírus, Departamento de Microbiologia, Brazil
| | - G Machado
- Hospital Risoleta Tolentino Neves, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - G M F Almeida
- Laboratório de Vírus, Departamento de Microbiologia, Brazil
| | - P C P Ferreira
- Laboratório de Vírus, Departamento de Microbiologia, Brazil
| | - C A Bonjardim
- Laboratório de Vírus, Departamento de Microbiologia, Brazil
| | | | - J S Abrahão
- Laboratório de Vírus, Departamento de Microbiologia, Brazil
| | - E G Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Brazil
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Franco-Luiz APM, Fagundes-Pereira A, Costa GB, Alves PA, Oliveira DB, Bonjardim CA, Ferreira PCP, Trindade GDS, Panei CJ, Galosi CM, Abrahão JS, Kroon EG. Spread of vaccinia virus to cattle herds, Argentina, 2011. Emerg Infect Dis 2015; 20:1576-8. [PMID: 25153340 PMCID: PMC4178398 DOI: 10.3201/eid2009.140154] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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12
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Pascoal-Xavier MA, Figueiredo ACC, Gomes LI, Peruhype-Magalhães V, Calzavara-Silva CE, Costa MA, Reis IA, Bonjardim CA, Kroon EG, de Oliveira JG, Ferreira PCP. RAP1 GTPase overexpression is associated with cervical intraepithelial neoplasia. PLoS One 2015; 10:e0123531. [PMID: 25856570 PMCID: PMC4391937 DOI: 10.1371/journal.pone.0123531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/19/2015] [Indexed: 01/06/2023] Open
Abstract
RAP1 (RAS proximate 1), a small GTP-binding protein of the RAS superfamily, is a putative oncogene that is highly expressed in several malignant cell lines and types of cancers, including some types of squamous cell carcinoma. However, the participation of RAP1 in cervical carcinogenesis is unknown. We conducted a cross-sectional study of paraffin-embedded cervical biopsies to determine the association of RAP1 with cervical intraepithelial neoplasia (CIN). Standard and quantitative immunohistochemistry assessment of RAP1 expression in fixed tissue was performed on 183 paraffin-embedded cervical biopsies that were classified as normal or non-dysplastic mucosa (NDM) (n = 33); CIN grade 1 (n = 84) and CIN grade 2/3 (n = 66). A gradual increase in RAP1 expression in NDM < CIN 1 < CIN 2/3 (p<0.001) specimens was observed and was in agreement with the histopathologic diagnosis. A progressive increase in the RAP1 expression levels increased the risk of CIN 1 [odds ratio (OR) = 3.50; 95% confidence interval (CI) 1.30-10.64] 3.5 fold and the risk of CIN 2/3 (OR = 19.86, 95% CI 6.40-70.79) nearly 20 fold when compared to NDM. In addition, stereotype ordinal regression analysis showed that this progressive increase in RAP1 expression more strongly impacted CIN 2/3 than CIN 1. Our findings suggest that RAP1 may be a useful biomarker for the diagnosis of CIN.
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Affiliation(s)
- Marcelo Antonio Pascoal-Xavier
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | | | | | | | | | - Marcelo Azevedo Costa
- Departamento de Engenharia de Produção, Escola de Engenharia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - Ilka Afonso Reis
- Departamento de Estatística, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - Claudio Antônio Bonjardim
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | - Erna Geessien Kroon
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
| | | | - Paulo César Peregrino Ferreira
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brasil
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de Freitas Almeida GM, Oliveira DBD, Botelho LM, Silva LKDS, Guedes ACM, Santos FPST, Bonjardim CA, Ferreira PCP, Kroon EG. Differential upregulation of human 2'5'OAS genes on systemic sclerosis: Detection of increased basal levels of OASL and OAS2 genes through a qPCR based assay. Autoimmunity 2013; 47:119-26. [PMID: 24328427 DOI: 10.3109/08916934.2013.866102] [Citation(s) in RCA: 7] [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] [Indexed: 11/13/2022]
Abstract
2'5'OAS are template-independent RNA polymerases with antiviral activity and important to homeostasis maintenance. Here we have developed quantitative PCR (qPCR) reactions for the detection of each individual 2'5'OAS human gene and used them to evaluate these gene levels in systemic sclerosis patients cells. The method was efficient for quantification of 2'5'OAS genes on human cells after interferon (IFN) treatment, and revealed that primary cells from patients with systemic sclerosis have increased basal levels of OASL and OAS2 genes. When treated, patients cells are able to induce all four 2'5'OAS genes. Our hypothesis is that abnormally circulating type I IFNs on the disease could be establishing a desensitized state on patients cells, making them refractory to subsequent IFN doses, and that OASL and OAS2 genes upregulation may be due to an IFN-independent stimulus. Further characterizing the biological activities of these genes, their induction pathways and their regulatory functions can lead to better understanding of systemic sclerosis molecular mechanisms and of their biological activities.
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Affiliation(s)
- Gabriel Magno de Freitas Almeida
- Laboratório de Vírus, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte, Minas Gerais , Brazil and
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Salgado APC, Soares-Martins JAP, Andrade LG, Albarnaz JD, Ferreira PCP, Kroon EG, Bonjardim CA. Study of vaccinia and cowpox viruses' replication in Rac1-N17 dominant-negative cells. Mem Inst Oswaldo Cruz 2013; 108:554-62. [PMID: 23903969 DOI: 10.1590/s0074-02762013000500004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 05/13/2013] [Indexed: 11/22/2022] Open
Abstract
Interfering with cellular signal transduction pathways is a common strategy used by many viruses to create a propitious intracellular environment for an efficient replication. Our group has been studying cellular signalling pathways activated by the orthopoxviruses Vaccinia (VACV) and Cowpox (CPXV) and their significance to viral replication. In the present study our aim was to investigate whether the GTPase Rac1 was an upstream signal that led to the activation of MEK/ERK1/2, JNK1/2 or Akt pathways upon VACV or CPXV' infections. Therefore, we generated stable murine fibroblasts exhibiting negative dominance to Rac1-N17 to evaluate viral growth and the phosphorylation status of ERK1/2, JNK1/2 and Akt. Our results demonstrated that VACV replication, but not CPXV, was affected in dominant-negative (DN) Rac1-N17 cell lines in which viral yield was reduced in about 10-fold. Viral late gene expression, but not early, was also reduced. Furthermore, our data showed that Akt phosphorylation was diminished upon VACV infection in DN Rac1-N17 cells, suggesting that Rac1 participates in the phosphoinositide-3 kinase pathway leading to the activation of Akt. In conclusion, our results indicate that while Rac1 indeed plays a role in VACV biology, perhaps another GTPase may be involved in CPXV replication.
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Affiliation(s)
- Ana Paula Carneiro Salgado
- Grupo de Transdução de Sinal/Orthopoxvirus e Flavivírus - LABVÍRUS, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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15
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Salgado APC, Soares-Martins JAP, Andrade LG, Albarnaz JD, Ferreira PCP, Kroon EG, Bonjardim CA. Study of vaccinia and cowpox viruses' replication in Rac1-N17 dominant-negative cells. Mem Inst Oswaldo Cruz 2013; 108. [PMID: 23903969 PMCID: PMC3970603 DOI: 10.1590/0074-0276108052013004] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Interfering with cellular signal transduction pathways is a common strategy used by many viruses to create a propitious intracellular environment for an efficient replication. Our group has been studying cellular signalling pathways activated by the orthopoxviruses Vaccinia (VACV) and Cowpox (CPXV) and their significance to viral replication. In the present study our aim was to investigate whether the GTPase Rac1 was an upstream signal that led to the activation of MEK/ERK1/2, JNK1/2 or Akt pathways upon VACV or CPXV' infections. Therefore, we generated stable murine fibroblasts exhibiting negative dominance to Rac1-N17 to evaluate viral growth and the phosphorylation status of ERK1/2, JNK1/2 and Akt. Our results demonstrated that VACV replication, but not CPXV, was affected in dominant-negative (DN) Rac1-N17 cell lines in which viral yield was reduced in about 10-fold. Viral late gene expression, but not early, was also reduced. Furthermore, our data showed that Akt phosphorylation was diminished upon VACV infection in DN Rac1-N17 cells, suggesting that Rac1 participates in the phosphoinositide-3 kinase pathway leading to the activation of Akt. In conclusion, our results indicate that while Rac1 indeed plays a role in VACV biology, perhaps another GTPase may be involved in CPXV replication.
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Affiliation(s)
- Ana Paula Carneiro Salgado
- Grupo de Transdução de Sinal/Orthopoxvirus e Flavivírus - LABVÍRUS , Laboratório de Vírus, Departamento de Microbiologia, Instituto de
Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG,
Brasil
| | - Jamária Adriana Pinheiro Soares-Martins
- Grupo de Transdução de Sinal/Orthopoxvirus e Flavivírus - LABVÍRUS , Laboratório de Vírus, Departamento de Microbiologia, Instituto de
Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG,
Brasil , Department of Microbiology and Molecular Genetics, Medical College
of Wisconsin, Milwaukee, WI, USA
| | - Luciana Garcia Andrade
- Grupo de Transdução de Sinal/Orthopoxvirus e Flavivírus - LABVÍRUS , Laboratório de Vírus, Departamento de Microbiologia, Instituto de
Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG,
Brasil
| | - Jonas Dutra Albarnaz
- Grupo de Transdução de Sinal/Orthopoxvirus e Flavivírus - LABVÍRUS , Laboratório de Vírus, Departamento de Microbiologia, Instituto de
Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG,
Brasil
| | - Paulo César Peregrino Ferreira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de
Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG,
Brasil
| | - Erna Geessien Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de
Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG,
Brasil
| | - Cláudio Antônio Bonjardim
- Grupo de Transdução de Sinal/Orthopoxvirus e Flavivírus - LABVÍRUS , Laboratório de Vírus, Departamento de Microbiologia, Instituto de
Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG,
Brasil , Corresponding author:
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Assis FL, Borges IA, Ferreira PCP, Bonjardim CA, Trindade GDS, Lobato ZIP, Guedes MIM, Mesquita V, Kroon EG, Abrahão JS. Group 2 vaccinia virus, Brazil. Emerg Infect Dis 2013; 18:2035-8. [PMID: 23171598 PMCID: PMC3557889 DOI: 10.3201/eid1812.120145] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [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] [Indexed: 12/30/2022] Open
Abstract
In 2011, vaccinia virus caused an outbreak of bovine vaccinia, affecting dairy cattle and dairy workers in Brazil. Genetic and phenotypic analyses identified this isolate as distinct from others recently identified, thereby reinforcing the hypothesis that different vaccinia virus strains co-circulate in Brazil.
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Affiliation(s)
- Felipe Lopes Assis
- Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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17
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Abrahão JS, Borges IA, Mazur C, Lobato ZIP, Ferreira PCP, Bonjardim CA, Trindade GS, Kroon EG. Looking back: a genetic retrospective study of Brazilian Orf virus isolates. Vet Rec 2012; 171:476. [PMID: 23065256 DOI: 10.1136/vr.100634] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Orf virus (ORFV), the prototype of the genus Parapoxvirus, is the aetiological agent of contagious ecthyma (CE), a pustular dermatitis that afflicts domestic and wild small ruminants. CE is one of the most widespread poxvirus diseases in the world, causing public health impacts. Outbreaks of ORFV have been observed in all geographical regions of Brazil, affecting ovine and caprine herds. The origins, epidemiology and identity of Brazilian ORFVs are unknown, and no comparative or phylogenetic studies of these viruses have been performed. In the present study, we revisited CE outbreaks which occurred until 32 years ago, and we assessed, genetically, five viral isolates. We performed the sequencing and analysis of the three ORFV molecular markers: B2L gene, virus interferon resistance gene (VIR) and the vascular endothelial growth factor gene. Nucleotide and amino acid analysis of the analysed genes demonstrated that Brazilian ORFVs do not form a unique cluster, and presented more similarity to other worldwide ORFV samples than with each other. These data raise the questions of whether there are different worldwide ORFVs circulating in Brazil, or if all the Brazilian ORFV samples are of the same virus taken at distinct time points.
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Affiliation(s)
- J S Abrahão
- Departamento de Microbiologia e Imunologia Veterinária, Universidade Federal Rural do Rio de Janeiro, Boa Esperança, Seropedica, Rio de Janeiro, Brazil.
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18
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Abrahão JS, Drumond BP, Trindade GDS, da Silva-Fernandes AT, Ferreira JMS, Alves PA, Campos RK, Siqueira L, Bonjardim CA, Ferreira PCP, Kroon EG. Rapid detection of Orthopoxvirus by semi-nested PCR directly from clinical specimens: a useful alternative for routine laboratories. J Med Virol 2010; 82:692-9. [PMID: 20166167 DOI: 10.1002/jmv.21617] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Orthopoxvirus (OPV) has been associated with worldwide exanthematic outbreaks, which have resulted in serious economic losses as well as impact on public health. Although the current classical and molecular methods are useful for the diagnosis of OPV, they are largely inaccessible to unsophisticated clinical laboratories. The major reason for the inaccessibility is that they require both virus isolation and DNA manipulation. In this report, a rapid, sensitive and low-cost semi-nested PCR method is described for the detection of OPV DNA directly from clinical specimens. A set of primers was designed to amplify the conserved OPV vgf gene. The most useful thermal and chemical conditions were selected and minimum non-inhibitory dilutions were determined. More than 100 Brazilian Vaccinia virus (VACV) field clinical specimens were tested using this semi-nested PCR in order to confirm its applicability. Cowpox virus was also detected by PCR from the ear scabs of scarified Balb/c mice. In addition, the method was highly sensitive for the detection of VACV DNA in murine blood and excreta, which are among the suggested reservoirs of OPV. Together, these data suggest that semi-nested PCR can be used for initial screening for OPV and as a routine diagnostic laboratory method.
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Affiliation(s)
- Jônatas Santos Abrahão
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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19
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Mota BEF, Trindade GS, Diniz TC, da Silva-Nunes M, Braga EM, Urbano-Ferreira M, Rodrigues GOL, Bonjardim CA, Ferreira PCP, Kroon EG. Seroprevalence of orthopoxvirus in an Amazonian rural village, Acre, Brazil. Arch Virol 2010; 155:1139-44. [PMID: 20428903 DOI: 10.1007/s00705-010-0675-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Accepted: 03/23/2010] [Indexed: 11/24/2022]
Abstract
Vaccinia virus strains from the family Poxviridae have been frequently isolated in Brazil and associated with outbreaks of exanthematic disease affecting cows and humans. An ELISA IgG was applied to evaluate the seroprevalence of orthopoxviruses in a community located in a rural settlement in the Amazon region, where no orthopoxvirus outbreaks have yet been reported. An overall seroprevalence of 27.89% was found, and it was 23.38% in the non-vaccinated population (smallpox vaccination). These results strongly suggest that orthopoxviruses circulate in this population, and it is the first finding of seropositivity for orthopoxviruses in a population without any previously reported outbreaks.
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Affiliation(s)
- B E F Mota
- Laboratorio de Virus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
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20
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Silva-Fernandes AT, Travassos CEPF, Ferreira JMS, Abrahão JS, Rocha ESDO, Viana-Ferreira F, dos Santos JR, Bonjardim CA, Ferreira PCP, Kroon EG. Natural human infections with Vaccinia virus during bovine vaccinia outbreaks. J Clin Virol 2009; 44:308-13. [PMID: 19243990 DOI: 10.1016/j.jcv.2009.01.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2008] [Revised: 12/07/2008] [Accepted: 01/14/2009] [Indexed: 11/17/2022]
Abstract
BACKGROUND Bovine vaccinia is an exanthematic disease caused by Vaccinia virus (VACV). This zoonosis has been associated with several cases of bovine infection, particularly in milk herds. Farmers, milkers and their close contacts developed lesions on the hands, forearms, legs and face accompanied by fever, headache, malaise, myalgia and axillary, inguinal and cervical lymphadenopathy. VACV infections have a significant public health impact due to their occupational character, high frequency of transmission and the improper medical treatment often applied. OBJECTIVES To study natural human infection by VACV and to analyze clinical and epidemiological aspects, emphasizing the patients' immunological status. STUDY DESIGN Ninety-eight individuals from rural properties with bovine vaccinia (BV) outbreaks who were at risk due to contact were submitted to epidemiological and clinical studies. From these individuals, 54 sera were analyzed by serological and molecular procedures. This study was conducted in Rio de Janeiro State from September 2002 to October 2006. RESULTS The clinical frequency of infection was 52.0%, with 57.4% ELISA and 43.0% PRNT-positive reactions. DNAemia was detected in 18.5% of the analyzed sera, and 50% of smallpox-vaccinated individuals developed symptoms. CONCLUSIONS This study confirms the high clinical frequency of human VACV infection, even among vaccinated individuals. The infection was related to detection of IgG- or IgM-specific antibodies that correlates in most of the cases with positive PRNT. The DNAemia suggests viremia during VACV natural infections. Our data indicate that patients vaccinated against smallpox may no longer be protected.
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Affiliation(s)
- André Tavares Silva-Fernandes
- Laboratório de Sanidade Animal, Hospital Veterinário, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Rio de Janeiro, Brazil.
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21
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Almeida GMDF, de Oliveira DB, Magalhães CLDB, Bonjardim CA, Ferreira PCP, Kroon EG. Antiviral activity of type I interferons and interleukins 29 and 28a (type III interferons) against Apeu virus. Antiviral Res 2008; 80:302-8. [PMID: 18657576 DOI: 10.1016/j.antiviral.2008.06.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2007] [Revised: 06/23/2008] [Accepted: 06/30/2008] [Indexed: 11/17/2022]
Abstract
Interferons (IFNs) are cytokines with important immunomodulatory activity in vertebrates. Although type I IFNs and interleukins (IL) 29 and 28a (type III IFNs) bind to different cellular receptors and have distinct structures, most of their biological activities are redundant. Apeu virus (APEUV) is a member of the Bunyaviridae family isolated from the Brazilian rain forest. In this paper we evaluated the antiviral activity of type I and type III IFNs against APEUV. All tested IFNs were able to induce an antiviral state against the virus in a dose-dependent way. The activity of type III IFNs did not need the presence of type I IFNs. Mixing both types of IFNs did not improve the biological activity of each type alone. The tested IFNs were also able to protect human peripheral blood mononuclear cells from infection. IFN alpha2, IFN beta, IL-29 and IL-28a induced the expression of 2',5'-oligoadenylate synthetase (2'5'OAS) and 6-16 genes. Although MxA gene was related to antiviral activity against Bunyaviruses, there was no induction of MxA in our model. We were able to show activity of type I and type III IFNs against a RNA virus, and that this activity is not dependent on MxA gene.
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Affiliation(s)
- Gabriel Magno de Freitas Almeida
- Laboratório de Vírus, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Pampulha, Belo Horizonte CEP 31270-901, MG, Brazil
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22
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Barcelos Figueiredo L, Batista Cecílio A, Portela Ferreira G, Paiva Drumond B, Germano de Oliveira J, Bonjardim CA, Peregrino Ferreira PC, Kroon EG. Dengue virus 3 genotype 1 associated with dengue fever and dengue hemorrhagic fever, Brazil. Emerg Infect Dis 2008; 14:314-6. [PMID: 18258129 PMCID: PMC2600180 DOI: 10.3201/eid1402.070278] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Dengue serotype 3 viruses were isolated from patients in Brazil from 2002 through 2004. On the basis of phylogenetic analyses, these isolates were assigned genotype 1. This genotype had never been reported in South America before. Its appearance indicates a major risk factor for dengue epidemics and severe disease.
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23
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Quinan BR, de Brito Magalhães CL, Novaes RFV, Dos Santos JR, Kroon EG, Bonjardim CA, Ferreira PCP. Sequence and phylogenetic analysis of the large (L) segment of the Tahyna virus genome. Virus Genes 2008; 36:435-7. [PMID: 18351450 DOI: 10.1007/s11262-008-0212-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2007] [Accepted: 01/29/2008] [Indexed: 11/27/2022]
Abstract
The Tahyna virus (TAHV) is an important human pathogen in the Bunyaviridae family. To date, only the S and M segments of this virus have been sequenced, but the sequence of the L segment hasn't been established yet. In this study, we sequenced 963 nucleotides of the L segment of TAHV, comprising pre-motif A and motif A in region 3 of the RNA polymerase gene.
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Affiliation(s)
- Bárbara Resende Quinan
- Laboratory of virus, Department of Microbiology, Institute of Biological Science, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Campus Pampulha, 31270-901 Belo Horizonte, Minas Gerais, Brasil.
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24
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Drumond BP, Leite JA, da Fonseca FG, Bonjardim CA, Ferreira PCP, Kroon EG. Brazilian Vaccinia virus strains are genetically divergent and differ from the Lister vaccine strain. Microbes Infect 2008; 10:185-97. [DOI: 10.1016/j.micinf.2007.11.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2007] [Revised: 10/22/2007] [Accepted: 11/19/2007] [Indexed: 11/25/2022]
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25
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de Brito Magalhães CL, Quinan BR, Novaes RFV, dos Santos JR, Kroon EG, Bonjardim CA, Ferreira PCP. Caraparu virus (group C Orthobunyavirus): sequencing and phylogenetic analysis based on the conserved region 3 of the RNA polymerase gene. Virus Genes 2007; 35:681-4. [PMID: 17705031 DOI: 10.1007/s11262-007-0138-4] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2007] [Accepted: 07/02/2007] [Indexed: 11/26/2022]
Abstract
Here, for the first time, we report the nucleotide sequence of Caraparu virus (CARV) L segment and the analysis of the RNA polymerase region 3 encoded by this segment. The 1,404 bp nucleotide sequence shares the highest identity with Bunyamwera, La Crosse, Oropouche, and Akabane virus sequences. The amino acid sequence was deduced and aligned with sequences from members of the Bunyaviridae family and used for phylogenetic analysis. The CARV clustered in the Orthobunyavirus genus. The premotif A and motifs A-E are present in the region 3 of the Bunyaviridae family, were also conserved in CARV L protein, as well as other conserved regions among Orthobunyavirus genus.
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Affiliation(s)
- Cintia Lopes de Brito Magalhães
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Campus Pampulha, CEP: 31270-901, Belo Horizonte, Minas Gerais, Brazil.
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26
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Leite JA, Drumond BP, de Souza Trindade G, Bonjardim CA, Ferreira PCP, Kroon EG. Brazilian Vaccinia virus strains show genetic polymorphism at the ati gene. Virus Genes 2007; 35:531-9. [PMID: 17671837 DOI: 10.1007/s11262-007-0133-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [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: 04/12/2007] [Accepted: 06/25/2007] [Indexed: 10/23/2022]
Abstract
Nucleotide sequence comparison of the internal region of the ati gene of members of the Orthopoxvirus genera revealed that this gene is variable among different species, although within members of the same species it is considered to be well conserved. Previous studies indicated that there is genetic variability in the ati gene among some Brazilian Vaccinia virus strains. To further investigate this variability, we performed molecular analysis of the internal region of the ati gene of eight Brazilian Vaccinia virus strains. While the internal region of this gene in one strain was similar to the Western Reserve strain, four strains presented two blocks of deletions in the analyzed region, and the ati gene was almost entirely deleted from three other strains. These findings demonstrate that there is genetic polymorphism within the ati gene among different Brazilian Vaccinia virus strains.
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Affiliation(s)
- Juliana Almeida Leite
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 caixa postal 486 CEP: 31270-901, Belo Horizonte, MG, Brazil
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27
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Coelho LFL, de Oliveira JG, de Oliveira DB, Guedes ACM, Lanna CCD, Prados RZ, Ferreira PCP, Bonjardim CA, Kroon EG. Increased expression of 2'5'oligoadenylate synthetase and double-stranded RNA dependent protein kinase messenger RNAs on affected skin of systemic sclerosis patients. Arch Dermatol Res 2007; 299:259-62. [PMID: 17541615 DOI: 10.1007/s00403-007-0737-x] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2006] [Revised: 01/07/2007] [Accepted: 01/13/2007] [Indexed: 02/07/2023]
Abstract
Scleroderma or systemic sclerosis (SSc) is an autoimmune disorder of unknown aetiology characterized by excessive collagen synthesis and subsequent deposition on the skin and various internal organs. Interferons (IFNs) are well-known immunomodulators and inhibitors of collagen production. However, IFN therapy has been implicated in the development or exacerbation of several autoimmune diseases, including SSc. We analyzed the expression of several interferon-stimulated genes (ISGs) in affected skin of SSc patients (skin tissue and cultured skin fibroblasts). A set of ISGs (PKR, 2'5'OAS, MxA, and 6-16) was analyzed by real-time PCR using RNA extracted from cultured skin fibroblasts and skin tissue of normal individuals and SSc patients. Both normal and SSc affected skin cultured fibroblasts were sensitive to the IFN treatment and presented similar levels of all ISGs tested. However, PKR and 2'5'OAS mRNA expression levels were significantly higher in the affected skin tissue of SSc patients when compared to normal controls. These data suggest that the IFN system plays a role in the pathogenesis of SSc.
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Affiliation(s)
- Luiz Felipe Leomil Coelho
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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28
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de Souza Trindade G, Drumond BP, Guedes MIMC, Leite JA, Mota BEF, Campos MA, da Fonseca FG, Nogueira ML, Lobato ZIP, Bonjardim CA, Ferreira PCP, Kroon EG. Zoonotic vaccinia virus infection in Brazil: clinical description and implications for health professionals. J Clin Microbiol 2007; 45:1370-2. [PMID: 17287326 PMCID: PMC1865848 DOI: 10.1128/jcm.00920-06] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [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: 11/20/2022] Open
Abstract
Bovine vaccinia virus outbreaks have been occurring in different regions of Brazil. We report here the time course of natural human infection by vaccinia virus and describe important clinical and epidemiological aspects of this zoonotic infection. The diagnosis of vaccinia virus infection was based on clinical, serological, and molecular procedures.
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Affiliation(s)
- Giliane de Souza Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais. Av. Antônio Carlos, 6627, Caixa Postal 486, CEP 31270-901, Belo Horizonte, MG, Brazil
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29
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Leomil Coelho LF, Mota BEF, Sales PCM, Marques JT, de Oliveira JG, Bonjardim CA, Peregrino Ferreira PC, Kroon EG. Integrin alpha 11 is a novel type I interferon stimulated gene. Cytokine 2006; 33:352-61. [PMID: 16697656 DOI: 10.1016/j.cyto.2006.03.007] [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: 07/23/2005] [Revised: 01/30/2006] [Accepted: 03/19/2006] [Indexed: 10/24/2022]
Abstract
Interferons (IFNs) are a family of cytokines that have many biological functions in the cell, including regulation of cellular growth, differentiation, immunomodulation, and viral replication by inducing a set of interferon stimulated genes (ISGs). Based on their structure and biological activities IFNs are subdivided into two groups: type I IFNs, which includes IFN-alpha and IFN-beta and type II IFNs, represented by IFN-gamma. The aim of this work was to investigate whether integrin alpha 11 (ITGA-11), a novel collagen-binding integrin, is responsive to type I IFN treatment. Our findings indicated that type I IFNs were able to induce the ITGA-11 mRNA levels in T98G cells. Increased levels of ITGA-11 protein were also observed in IFN-treated cells. The in vivo induction of ITGA-11 was detected in spleen and lungs of IFN-treated BALB/c mice. T98G cells infected with Murine encephalomyocarditis virus showed increased levels of ITGA-11 mRNA and protein. We observed that the ITGA-11 promoter has binding sites for transcriptional factors regulated by IFNs and the double-stranded RNA dependent protein kinase (PKR). Therefore we investigated the role of PKR in the induction of ITGA-11 by using a PKR deficient mouse embryo fibroblast cell line (MEFs). PKR(-/-) MEFs treated with IFN did not show increased levels of ITGA-11 protein nor mRNA although that could be promptly detected in wild type MEFs. Taken together our data suggest that ITGA-11 is a new interferon stimulated gene.
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Affiliation(s)
- Luiz Felipe Leomil Coelho
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Carvalho LRD, Farias LM, Nicoli JR, Silva MCF, Corsino ATSM, Lima LAD, Redondo RAF, Ferreira PCP, Pinto MEBM. Dominant culturable bacterial microbiota in the digestive tract of the American black vulture (Coragyps atratus Bechstein 1793) and search for antagonistic substances. Braz J Microbiol 2003. [DOI: 10.1590/s1517-83822003000300007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Trindade GDS, Guimarães da Fonseca F, Marques JT, Nogueira ML, Mendes LCN, Borges AS, Peiró JR, Pituco EM, Bonjardim CA, Ferreira PCP, Kroon EG. Araçatuba virus: a vaccinialike virus associated with infection in humans and cattle. Emerg Infect Dis 2003; 9:155-60. [PMID: 12603984 PMCID: PMC2901946 DOI: 10.3201/eid0902.020244] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
We describe a vaccinialike virus, Araçatuba virus, associated with a cowpoxlike outbreak in a dairy herd and a related case of human infection. Diagnosis was based on virus growth characteristics, electron microscopy, and molecular biology techniques. Molecular characterization of the virus was done by using polymerase chain reaction amplification, cloning, and DNA sequencing of conserved orthopoxvirus genes such as the vaccinia growth factor (VGF), thymidine kinase (TK), and hemagglutinin. We used VGF-homologous and TK gene nucleotide sequences to construct a phylogenetic tree for comparison with other poxviruses. Gene sequences showed 99% homology with vaccinia virus genes and were clustered together with the isolated virus in the phylogenetic tree. Araçatuba virus is very similar to Cantagalo virus, showing the same signature deletion in the gene. Araçatuba virus could be a novel vaccinialike virus or could represent the spread of Cantagalo virus.
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Affiliation(s)
| | | | | | | | | | - Alexandre Secorun Borges
- Universidade Estadual Paulista–Araçatuba, São Paulo, Brasil
- Universidade Estadual Paulista–Botucatu, São Paulo, Brasil
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de Oliveira JG, Guedes ACM, Lanna CCD, Coelho LFL, Prados RZ, Feghali C, Ferreira PCP, Kroon EG. Protease nexin-1 messenger RNA levels are not affected by serum or interferon beta in cultured systemic sclerosis fibroblasts. Arch Dermatol Res 2002; 293:584-9. [PMID: 11876527 DOI: 10.1007/s00403-001-0281-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 10/25/2022]
Abstract
The aim of the present study was to analyze the effect of serum and human recombinant beta interferon (rIFNbeta) treatment on PN-1 mRNA levels in cultured dermal fibroblasts obtained from the skin of healthy donors and from lesional skin of systemic sclerosis (SSc) patients with the limited (CREST syndrome) or the diffuse form of SSc. Total RNA was isolated from fibroblasts derived from the skin of healthy individuals and from lesional skin of patients with CREST syndrome and the diffuse form of SSc cultured under different conditions (1% or 10% serum-supplemented medium) and treated with 500 IU/ml of rIFNbeta. PN-1 gene expression was assessed by Northern blot analysis. We detected variable PN-1 mRNA levels in normal control fibroblasts as well as in SSc fibroblasts under the different culture conditions (1% or 10% serum-supplemented medium). Accumulated PN-1 mRNA levels found in normal cultured fibroblasts were similar to or even higher than in SSc fibroblasts. PN-1 messenger levels were not significantly altered by IFNbeta treatment in normal or SSc cultured fibroblasts despite the presence of an IFN-stimulated responsive element (ISRE) in the promoter of the PN-1 gene. Our findings suggest that PN-1 expression in SSc fibroblasts at the mRNA level requires further investigation in a large number of SSc patients to better characterize the role of this serpin in the pathogenesis of SSc. We conclude that the transcriptional regulation of PN-1 is not associated with IFNbeta, an antifibrotic cytokine naturally produced by fibroblasts.
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Affiliation(s)
- Jaquelline Germano de Oliveira
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Abstract
We report results of nucleotide sequencing and phylogenetic analysis of the env gene of 11 HIV-1 isolates, in Belo Horizonte, Brazil. Ten isolates belonged to HIV-1 subtype B and one was a probable B/F mosaic. This putative B/F recombinant is similar but not identical in its nucleotide sequence to other B/F mosaics described in Brazil.
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