1
|
Forden CA. Phagolysosomal resistance hypothesized to be a danger signal. Scand J Immunol 2024:e13400. [PMID: 39138895 DOI: 10.1111/sji.13400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 07/09/2024] [Accepted: 07/19/2024] [Indexed: 08/15/2024]
Abstract
Antigen presenting cells sometimes require T cell "help" to kill and decompose microbes they capture, especially when those microbes resist effector molecules including nitric oxide and reactive oxygen species. Pathogens are more likely to resist those effectors, shared by the innate and adaptive immune systems, than are commensals. Does such resistance alert the immune system to the danger posed by those pathogens? Several lines of evidence suggest this occurs. Mouse studies showed a surprising exacerbation, not alleviation of experimental autoimmune encephalomyelitis, by suppression of nitric oxide production, but only when the suppression was applied to animals undergoing vaccination with myelin. In contrast, animals receiving T cells activated by vaccination without suppression of nitric oxide benefitted from reduced autoimmune cytotoxicity when nitric oxide production was suppressed after adoptive transfer. Vaccinia and adenovirus suppress nitric oxide production and have been successful vaccine platforms, also consistent with the above phagolysosomal resistance hypothesis. The hypothesis solves a long-standing quandary-how can nitric oxide protect against both infection and autoimmunity, especially autoimmune diseases for which it seems a major effector? The importance of physical linkage between epitopes, first proposed in Bretscher's Two-Step, Two-Signal theory dependent on B cells, is extended to include phagolysosomal resistance in general, plus a corollary proposition that the immune system detects resistance to dissociation of high-affinity pathogenic ligands from host binding sites to make neutralizing antibodies.
Collapse
|
2
|
Silva LF, de Oliveira SAM, de Alencar Mota ALA, Gonçalves VSP, de Oliveira Freitas C, Cargnelutti JF, Flores EF, de Sant'Ana FJF. Seroprevalence of bovine vaccinia in cows and its correlation with the productive profile of affected farms in Distrito Federal, Brazil. Braz J Microbiol 2021; 53:411-419. [PMID: 34729709 DOI: 10.1007/s42770-021-00641-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/21/2021] [Indexed: 10/19/2022] Open
Abstract
Bovine vaccinia (BV) is an infectious disease caused by Vaccinia virus (VACV) characterized by vesicular and exanthematic lesions, mainly in cattle. Although BV has been described in some Brazilian regions in the last decades, official information regarding the current prevalence in bovine herds of Midwestern Brazil is lacking. Thus, the current study aimed to estimate the seroprevalence and risk factors associated with BV in cattle in the Distrito Federal (DF), Brazil. Sera of 312 cows of 64 herds were tested by virus-neutralizing test for VACV antibodies. Herd and animal seroprevalence were estimated to be 33.3% (CI 95%: 18.2-48.3%) and 10.6% (CI 95%: 1.0-20.2%), respectively. Seropositive cows were detected in dairy, beef, and mixed-purpose farms. The results of an epidemiological questionnaire showed that no risk factor analyzed was positively associated with seropositivity to VACV. There was no significant association between type of milking (manual/mechanic) and seropositivity to VACV; however, most seropositive cows were present in farms with high daily milk production and high number of lactating and adult cows. Our results indicate that VACV circulates in many regions of DF with considerable prevalence in dairy cows. Control measures to restrict VACV circulation and consequences of the infection may be advisable.
Collapse
Affiliation(s)
- Lorena Ferreira Silva
- Programa de Pós-Graduação em Ciência Animal, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | | | | | | | - Carolina de Oliveira Freitas
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Juliana Felipetto Cargnelutti
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Eduardo Furtado Flores
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | | |
Collapse
|
3
|
José da Silva Domingos I, Silva de Oliveira J, Lorene Soares Rocha K, Bretas de Oliveira D, Geessien Kroon E, Barbosa Costa G, de Souza Trindade G. Twenty Years after Bovine Vaccinia in Brazil: Where We Are and Where Are We Going? Pathogens 2021; 10:406. [PMID: 33807254 PMCID: PMC8065508 DOI: 10.3390/pathogens10040406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/18/2021] [Accepted: 03/25/2021] [Indexed: 01/31/2023] Open
Abstract
Orthopoxvirus (OPV) infections have been present in human life for hundreds of years. It is known that Variola virus (VARV) killed over 300 million people in the past; however, it had an end thanks to the physician Edward Jenner (who developed the first vaccine in history) and also thanks to a massive vaccination program in the 20th century all over the world. Although the first vaccine was created using the Cowpox virus (CPXV), it turned out later that the Vaccinia virus was the one used during the vaccination program. VACV is the etiological agent of bovine vaccinia (BV), a zoonotic disease that has emerged in Brazil and South America in the last 20 years. BV has a great impact on local dairy economies and is also a burden to public health. In this review, we described the main events related to VACV and BV emergence in Brazil and South America, the increase of related scientific studies, and the issues that science, human and animal medicine are going to face if we do not be on guard to this virus and its disease.
Collapse
Affiliation(s)
- Iago José da Silva Domingos
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil; (I.J.d.S.D.); (J.S.d.O.); (E.G.K.)
| | - Jaqueline Silva de Oliveira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil; (I.J.d.S.D.); (J.S.d.O.); (E.G.K.)
| | - Kamila Lorene Soares Rocha
- Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG 39100-000, Brazil; (K.L.S.R.); (D.B.d.O.)
| | - Danilo Bretas de Oliveira
- Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG 39100-000, Brazil; (K.L.S.R.); (D.B.d.O.)
| | - Erna Geessien Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil; (I.J.d.S.D.); (J.S.d.O.); (E.G.K.)
| | - Galileu Barbosa Costa
- Departamento de Análise em Saúde e Vigilância de Doenças Não-Transmissíveis, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, DF 70719-040, Brazil
| | - Giliane de Souza Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil; (I.J.d.S.D.); (J.S.d.O.); (E.G.K.)
| |
Collapse
|
4
|
Silva NIO, de Oliveira JS, Kroon EG, Trindade GDS, Drumond BP. Here, There, and Everywhere: The Wide Host Range and Geographic Distribution of Zoonotic Orthopoxviruses. Viruses 2020; 13:E43. [PMID: 33396609 PMCID: PMC7823380 DOI: 10.3390/v13010043] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 01/05/2023] Open
Abstract
The global emergence of zoonotic viruses, including poxviruses, poses one of the greatest threats to human and animal health. Forty years after the eradication of smallpox, emerging zoonotic orthopoxviruses, such as monkeypox, cowpox, and vaccinia viruses continue to infect humans as well as wild and domestic animals. Currently, the geographical distribution of poxviruses in a broad range of hosts worldwide raises concerns regarding the possibility of outbreaks or viral dissemination to new geographical regions. Here, we review the global host ranges and current epidemiological understanding of zoonotic orthopoxviruses while focusing on orthopoxviruses with epidemic potential, including monkeypox, cowpox, and vaccinia viruses.
Collapse
Affiliation(s)
| | | | | | | | - Betânia Paiva Drumond
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais: Belo Horizonte, Minas Gerais 31270-901, Brazil; (N.I.O.S.); (J.S.d.O.); (E.G.K.); (G.d.S.T.)
| |
Collapse
|
5
|
Alonso RC, Moura PP, Caldeira DF, Mendes MHAF, Pinto MHB, Cargnelutti JF, Flores EF, de Sant'Ana FJF. Poxviruses diagnosed in cattle from Distrito Federal, Brazil (2015-2018). Transbound Emerg Dis 2020; 67:1563-1573. [PMID: 31971341 DOI: 10.1111/tbed.13490] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 01/14/2023]
Abstract
A retrospective study of officially diagnosed poxvirus infections in cattle in Distrito Federal (DF), Brazil, between 2015 and 2018 was performed. All cases were investigated by the DF Official Veterinary Service. In the most cases, samples of oral, cutaneous (teats, udder) or foot lesions were submitted to molecular diagnosis by PCR. In approximately 70% of the cases, additional samples were also submitted for histopathology. Ninety-three out of 2,467 clinically examined cattle (from 385 farms) presented suggestive and/or compatible lesions with poxviruses. Fifty-two out of these 93 cases were confirmed as poxviruses: 27 vaccinia virus (VACV), 9 pseudocowpox virus (PCPV), 8 bovine papular stomatitis virus (BPSV), 5 coinfection by PCPV and BPSV and 3 unidentified parapoxvirus. The clinical cases were observed in farms with different exploration (beef, dairy or mixed) from 9 out of 30 administrative regions of DF. Gross findings consisted of papules, vesicles, ulcers, scabs and scars and varied of type, severity and affected tissue, according to the detected virus. A single human case was observed associated with a BPSV infection. Histologically, the lesions were very similar, independently of the detected poxvirus, and included mild to moderate, superficial, multifocal inflammatory infiltrate of lymphocytes, plasma cells, macrophages and/or neutrophils, with acanthosis and parakeratotic hyperkeratosis, usually associated with serous content, cellular debris and spongiosis. In the ulcerated lesions, there were focally extensive areas of necrosis with severe infiltrate of neutrophils in the adjacent connective tissue. Few to moderate amount of 4- to 8-µm eosinophilic inclusion bodies were observed in the cytoplasm of keratinocytes in 6 cases (2 of VACV, 2 of PCPV and 2 of PCPV/BPSV coinfection). Data of the current study demonstrate the wide circulation of different poxviruses in cattle from DF.
Collapse
Affiliation(s)
- Roberto C Alonso
- Secretaria de Agricultura, Abastecimento e Desenvolvimento Rural do Distrito Federal (SEAGRI), Subsecretaria de Defesa Agropecuária (DAS), Brasília, Brazil
| | - Priscila P Moura
- Secretaria de Agricultura, Abastecimento e Desenvolvimento Rural do Distrito Federal (SEAGRI), Subsecretaria de Defesa Agropecuária (DAS), Brasília, Brazil
| | - Denise F Caldeira
- Secretaria de Agricultura, Abastecimento e Desenvolvimento Rural do Distrito Federal (SEAGRI), Subsecretaria de Defesa Agropecuária (DAS), Brasília, Brazil
| | - Marcelo H A F Mendes
- Secretaria de Agricultura, Abastecimento e Desenvolvimento Rural do Distrito Federal (SEAGRI), Subsecretaria de Defesa Agropecuária (DAS), Brasília, Brazil
| | - Maria H B Pinto
- UnB, Laboratório de Diagnóstico Patológico Veterinário, Brasília, Brazil
| | - Juliana F Cargnelutti
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | - Eduardo F Flores
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil
| | | |
Collapse
|
6
|
Ehmann R, Brandes K, Antwerpen M, Walter M, V Schlippenbach K, Stegmaier E, Essbauer S, Bugert J, Teifke JP, Meyer H. Molecular and genomic characterization of a novel equine molluscum contagiosum-like virus. J Gen Virol 2020; 102. [PMID: 31922947 PMCID: PMC8515872 DOI: 10.1099/jgv.0.001357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Cases of pox-like lesions in horses and donkeys have been associated with poxviruses belonging to different genera of the family Poxviridae. These include the orthopoxviruses vaccinia virus (VACV), horsepoxvirus (HPXV) and cowpoxvirus (CPXV), as well as a potentially novel parapoxvirus and molluscum contagiosum virus (MOCV). However, with the exception of VACV, HPXV and CPXV, the genomic characterization of the causative agents remains largely elusive with only single short genome fragments available. Here we present the first full-length genome sequence of an equine molluscum contagiosum-like virus (EMCLV) directly determined from skin biopsies of a horse with generalized papular dermatitis. Histopathological analysis of the lesions revealed severe epidermal hyperplasia with numerous eosinophilic inclusion bodies within keratinocytes. Virions were detected in the lesions in embedded tissue by transmission electron microscopy. The genome sequence determined by next- and third-generation sequencing comprises 166 843 nt with inverted terminal repeats (ITRs) of 3473 nt. Overall, 20 of the predicted 159 ORFs have no equivalents in other poxviruses. Intriguingly, two of these ORFs were identified to encode homologues of mammalian proteins involved in immune signalling pathways, namely secreted and transmembrane protein 1 (SECTM1) and insulin growth factor-like family receptor 1 (IGFLR1), that were not described in any virus family so far. Phylogenetic analysis with all relevant representatives of the Poxviridae suggests that EMCLV should be nominated as a new species within the genus Molluscipoxvirus.
Collapse
Affiliation(s)
- Rosina Ehmann
- Bundeswehr Institute of Microbiology, Munich, Germany
| | - K Brandes
- Animal Pathology Augsburg, Augsburg, Germany
| | - M Antwerpen
- Bundeswehr Institute of Microbiology, Munich, Germany
| | - M Walter
- Bundeswehr Institute of Microbiology, Munich, Germany
| | | | | | - S Essbauer
- Bundeswehr Institute of Microbiology, Munich, Germany
| | - J Bugert
- Bundeswehr Institute of Microbiology, Munich, Germany
| | - J P Teifke
- Federal Research Institute for Animal Health, Greifswald - Insel Riems, Germany
| | - H Meyer
- Bundeswehr Institute of Microbiology, Munich, Germany
| |
Collapse
|
7
|
Lima MT, Oliveira GP, Afonso JAB, Souto RJC, de Mendonça CL, Dantas AFM, Abrahao JS, Kroon EG. An Update on the Known Host Range of the Brazilian Vaccinia Virus: An Outbreak in Buffalo Calves. Front Microbiol 2019; 9:3327. [PMID: 30723465 PMCID: PMC6350457 DOI: 10.3389/fmicb.2018.03327] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/21/2018] [Indexed: 11/13/2022] Open
Abstract
Even nearly forty years after the eradication of smallpox, members of the Poxviridae family continue to be the focus of an increasing number of studies. Among these studies, prominently stands vaccinia virus, an orthopoxvirus that is associated with bovine vaccinia outbreaks. Although more frequently associated with infections in cattle and humans, the host range of vaccinia virus is not restricted only to these hosts. There are several instances of molecular and serological evidence of circulation of vaccinia virus among wildlife species. In addition, viral isolation has confirmed a broad spectrum of vaccinia virus hosts. In this report, we provide a brief update on the host range of Brazilian vaccinia virus, and present a case description of an outbreak in domestic buffalo calves from Northeastern Brazil that corroborates previous serological and molecular studies. Furthermore, in the present study, vaccinia virus has been isolated for the first time in buffaloes, and referred to as vaccinia virus Pernambuco (VACV-PE). Phylogenetic reconstruction was based on A56R clustered VACV-PE with vaccinia virus isolates belonging to group 1 Brazilian vaccinia virus. Furthermore, the vaccinia virus genome was detected in the milk of a lactating cow, which thereby revealed a pathway for future studies on the possible impact of vaccinia virus on buffalo milk and milk products. Taken together, these results provide the first description of clinical disease caused by vaccinia virus in buffaloes in South America. They also raise new questions about the chain of transmission of this virus.
Collapse
Affiliation(s)
- Mauricio Teixeira Lima
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Graziele Pereira Oliveira
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Carla Lopes de Mendonça
- Clínica de Bovinos, Campus Garanhuns, Universidade Federal Rural de Pernambuco, Garanhuns, Brazil
| | | | - Jonatas Santos Abrahao
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Erna Geessien Kroon
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| |
Collapse
|
8
|
Abstract
Coinfections involving viruses are being recognized to influence the disease pattern that occurs relative to that with single infection. Classically, we usually think of a clinical syndrome as the consequence of infection by a single virus that is isolated from clinical specimens. However, this biased laboratory approach omits detection of additional agents that could be contributing to the clinical outcome, including novel agents not usually considered pathogens. The presence of an additional agent may also interfere with the targeted isolation of a known virus. Viral interference, a phenomenon where one virus competitively suppresses replication of other coinfecting viruses, is the most common outcome of viral coinfections. In addition, coinfections can modulate virus virulence and cell death, thereby altering disease severity and epidemiology. Immunity to primary virus infection can also modulate immune responses to subsequent secondary infections. In this review, various virological mechanisms that determine viral persistence/exclusion during coinfections are discussed, and insights into the isolation/detection of multiple viruses are provided. We also discuss features of heterologous infections that impact the pattern of immune responsiveness that develops.
Collapse
|
9
|
Abstract
Bovine vaccinia (BV), caused by Vaccinia virus (VACV), is a zoonosis characterized by exanthematous lesions in the teats of dairy cows and the hands of milkers and is an important public health issue. Severe VACV-induced lesions in the teats and udder of cows and buffaloes could lead to mastitis and other secondary infections, thereby reducing productivity and resulting in economic losses to the dairy industry. In Brazil, BV re-emerged in the late 1990s and is now endemic in most of the Brazilian territory. In the last 15 years, much effort has been made to know more about this disease and its epidemiology, etiologic agents, and interactions with the host and the environment. In this review, we describe the known dynamics of VACV infection in cattle and the viral shedding routes, as well as the relevance of BV for animal and public health.
Collapse
|
10
|
Borges IA, Reynolds MG, McCollum AM, Figueiredo PO, Ambrosio LLD, Vieira FN, Costa GB, Matos ACD, de Andrade Almeida VM, Ferreira PCP, Lobato ZIP, Dos Reis JKP, Kroon EG, Trindade GS. Serological Evidence of Orthopoxvirus Circulation Among Equids, Southeast Brazil. Front Microbiol 2018; 9:402. [PMID: 29568288 PMCID: PMC5852868 DOI: 10.3389/fmicb.2018.00402] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 02/21/2018] [Indexed: 12/17/2022] Open
Abstract
Since 1999 Vaccinia virus (VACV) outbreaks involving bovines and humans have been reported in Brazil; this zoonosis is known as Bovine Vaccinia (BV) and is mainly an occupational disease of milkers. It was only in 2008 (and then again in 2011 and 2014) however, that VACV was found causing natural infections in Brazilian equids. These reports involved only equids, no infected humans or bovines were identified, and the sources of infections remain unknown up to date. The peculiarities of Equine Vaccinia outbreaks (e.g., absence of human infection), the frequently shared environments, and fomites by equids and bovines in Brazilian farms and the remaining gaps in BV epidemiology incited a question over OPV serological status of equids in Brazil. For this report, sera from 621 equids - representing different species, ages, sexes and locations of origin within Minas Gerais State, southeast Brazil – were examined for the presence of anti-Orthopoxvirus (OPV) antibodies. Only 74 of these were sampled during an Equine Vaccinia outbreak, meaning some of these specific animals presented typical lesions of OPV infections. The majority of sera, however, were sampled from animals without typical signs of OPV infection and during the absence of reported Bovine or Equine Vaccinia outbreaks. Results suggest the circulation of VACV among equids of southeast Brazil even prior to the time of the first VACV outbreak in 2008. There is a correlation of OPVs outbreaks among bovines and equids although many gaps remain to our understanding of its nature. The data obtained may even be carefully associated to recent discussion over OPVs history. Moreover, data is available to improve the knowledge and instigate new researches regarding OPVs circulation in Brazil and worldwide.
Collapse
Affiliation(s)
- Iara A Borges
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mary G Reynolds
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, United States
| | - Andrea M McCollum
- Centers for Disease Control and Prevention (CDC), Atlanta, GA, United States
| | - Poliana O Figueiredo
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lara L D Ambrosio
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Flavia N Vieira
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Galileu B Costa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana C D Matos
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Valeria M de Andrade Almeida
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Paulo C P Ferreira
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Zélia I P Lobato
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Jenner K P Dos Reis
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Erna G Kroon
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Giliane S Trindade
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| |
Collapse
|
11
|
Albarnaz JD, Torres AA, Smith GL. Modulating Vaccinia Virus Immunomodulators to Improve Immunological Memory. Viruses 2018; 10:E101. [PMID: 29495547 PMCID: PMC5869494 DOI: 10.3390/v10030101] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 02/21/2018] [Accepted: 02/22/2018] [Indexed: 12/14/2022] Open
Abstract
The increasing frequency of monkeypox virus infections, new outbreaks of other zoonotic orthopoxviruses and concern about the re-emergence of smallpox have prompted research into developing antiviral drugs and better vaccines against these viruses. This article considers the genetic engineering of vaccinia virus (VACV) to enhance vaccine immunogenicity and safety. The virulence, immunogenicity and protective efficacy of VACV strains engineered to lack specific immunomodulatory or host range proteins are described. The ultimate goal is to develop safer and more immunogenic VACV vaccines that induce long-lasting immunological memory.
Collapse
Affiliation(s)
- Jonas D Albarnaz
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK.
| | - Alice A Torres
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK.
| | - Geoffrey L Smith
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK.
| |
Collapse
|
12
|
Pires MA, Rodrigues NFS, de Oliveira DB, de Assis FL, Costa GB, Kroon EG, Mota BEF. In vitro susceptibility to ST-246 and Cidofovir corroborates the phylogenetic separation of Brazilian Vaccinia virus into two clades. Antiviral Res 2018; 152:36-44. [PMID: 29427676 DOI: 10.1016/j.antiviral.2018.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/29/2018] [Accepted: 02/05/2018] [Indexed: 01/01/2023]
Abstract
The Orthopoxvirus (OPV) genus of the Poxviridae family contains several human pathogens, including Vaccinia virus (VACV), which have been implicating in outbreaks of a zoonotic disease called Bovine Vaccinia in Brazil. So far, no approved treatment exists for OPV infections, but ST-246 and Cidofovir (CDV) are now in clinical development. Therefore, the objective of this work was to evaluate the susceptibility of five strains of Brazilian VACV (Br-VACV) to ST-246 and Cidofovir. The susceptibility of these strains to both drugs was evaluated by plaque reduction assay, extracellular virus's quantification in the presence of ST-246 and one-step growth curve in cells treated with CDV. Besides that, the ORFs F13L and E9L were sequenced for searching of polymorphisms associated with drug resistance. The effective concentration of 50% (EC50) from both drugs varies significantly for different strains (from 0.0054 to 0.051 μM for ST-246 and from 27.14 to 61.23 μM for CDV). ST-246 strongly inhibits the production of extracellular virus for all isolates in concentrations as low as 0.1 μM and it was observed a relevant decrease of progeny production for all Br-VACV after CDV treatment. Sequencing of the F13L and E9L ORFs showed that Br-VACV do not present the polymorphism(s) associated with resistance to ST-246 and CDV. Taken together, our results showed that ST-246 and CDV are effective against diverse, wild VACV strains and that the susceptibility of Br-VACV to these drugs mirrored the phylogenetic split of these isolates into two groups. Thus, both ST-246 and CDV are of great interest as compounds to treat individuals during Bovine Vaccinia outbreaks in Brazil.
Collapse
Affiliation(s)
- Mariana A Pires
- Laboratório de Microbiologia Clínica, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, Brazil
| | - Nathália F S Rodrigues
- Laboratório de Microbiologia Clínica, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, Brazil
| | - Danilo B de Oliveira
- Laboratório de Vírus, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, Brazil
| | - Felipe L de Assis
- Laboratório de Vírus, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, Brazil
| | - Galileu B Costa
- Laboratório de Vírus, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, Brazil
| | - Erna G Kroon
- Laboratório de Vírus, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, Brazil
| | - Bruno E F Mota
- Laboratório de Microbiologia Clínica, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, Brazil.
| |
Collapse
|
13
|
Lima MT, Oliveira GP, Assis FL, Bretas de Oliveira D, Vaz SM, Trindade GDS, Abrahão JS, Kroon EG. Ocular Vaccinia Infection in Dairy Worker, Brazil. Emerg Infect Dis 2018; 24:161-162. [PMID: 29260673 PMCID: PMC5749457 DOI: 10.3201/eid2401.170430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
We studied a clinical case of vaccinia virus that caused an ocular manifestation in a dairy worker in Brazil. Biologic and molecular analyses identified a co-infection with 2 isolates from different Brazilian vaccinia virus phylogenetic groups.
Collapse
|
14
|
A Model to Detect Autochthonous Group 1 and 2 Brazilian Vaccinia virus Coinfections: Development of a qPCR Tool for Diagnosis and Pathogenesis Studies. Viruses 2017; 10:v10010015. [PMID: 29301202 PMCID: PMC5795428 DOI: 10.3390/v10010015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 12/22/2017] [Accepted: 12/29/2017] [Indexed: 11/16/2022] Open
Abstract
Vaccinia virus (VACV) is the etiological agent of bovine vaccinia (BV), an emerging zoonosis that has been associated with economic losses and social effects. Despite increasing reports of BV outbreaks in Brazil, little is known about the biological interactions of Brazilian VACV (VACV-BR) isolates during coinfections; furthermore, there are no tools for the diagnosis of these coinfections. In this study, a tool to co-detect two variants of VACV was developed to provide new information regarding the pathogenesis, virulence profile, and viral spread during coinfection with VACV-BR isolates. To test the quantitative polymerase chain reactions (qPCR) tool, groups of BALB/c mice were intranasally monoinfected with Pelotas virus 1-Group II (PV1-GII) and Pelotas virus 2-Group I (PV2-GI), or were coinfected with PV1-GII and PV2-GI. Clinical signs of the mice were evaluated and the viral load in lung and spleen were detected using simultaneous polymerase chain reactions (PCR) targeting the A56R (hemagglutinin) gene of VACV. The results showed that qPCR for the quantification of viral load in coinfection was efficient and highly sensitive. Coinfected mice presented more severe disease and a higher frequency of VACV detection in lung and spleen, when compared to monoinfected groups. This study is the first description of PV1 and PV2 pathogenicity during coinfection in mice, and provides a new method to detect VACV-BR coinfections.
Collapse
|
15
|
Oliveira JSD, Figueiredo PDO, Costa GB, Assis FLD, Drumond BP, da Fonseca FG, Nogueira ML, Kroon EG, Trindade GDS. Vaccinia Virus Natural Infections in Brazil: The Good, the Bad, and the Ugly. Viruses 2017; 9:E340. [PMID: 29140260 PMCID: PMC5707547 DOI: 10.3390/v9110340] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/05/2017] [Accepted: 11/10/2017] [Indexed: 01/19/2023] Open
Abstract
The orthopoxviruses (OPV) comprise several emerging viruses with great importance to human and veterinary medicine, including vaccinia virus (VACV), which causes outbreaks of bovine vaccinia (BV) in South America. Historically, VACV is the most comprehensively studied virus, however, its origin and natural hosts remain unknown. VACV was the primary component of the smallpox vaccine, largely used during the smallpox eradication campaign. After smallpox was declared eradicated, the vaccination that conferred immunity to OPV was discontinued, favoring a new contingent of susceptible individuals to OPV. VACV infections occur naturally after direct contact with infected dairy cattle, in recently vaccinated individuals, or through alternative routes of exposure. In Brazil, VACV outbreaks are frequently reported in rural areas, affecting mainly farm animals and humans. Recent studies have shown the role of wildlife in the VACV transmission chain, exploring the role of wild rodents as reservoirs that facilitate VACV spread throughout rural areas. Furthermore, VACV circulation in urban environments and the significance of this with respect to public health, have also been explored. In this review, we discuss the history, epidemiological, ecological and clinical aspects of natural VACV infections in Brazil, also highlighting alternative routes of VACV transmission, the factors involved in susceptibility to infection, and the natural history of the disease in humans and animals, and the potential for dissemination to urban environments.
Collapse
Affiliation(s)
- Jaqueline Silva de Oliveira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Poliana de Oliveira Figueiredo
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Galileu Barbosa Costa
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | | | - Betânia Paiva Drumond
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Flávio Guimarães da Fonseca
- Laboratório de Virologia Básica e Aplicada, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Maurício Lacerda Nogueira
- Laboratório de Pesquisas em Virologia, Departamento de Doenças Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, São Paulo 15090-000, Brazil.
| | - Erna Geessien Kroon
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| | - Giliane de Souza Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.
| |
Collapse
|
16
|
Quiner CA, Nakazawa Y. Ecological niche modeling to determine potential niche of Vaccinia virus: a case only study. Int J Health Geogr 2017; 16:28. [PMID: 28784125 PMCID: PMC5547515 DOI: 10.1186/s12942-017-0100-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 07/21/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Emerging and understudied pathogens often lack information that most commonly used analytical tools require, such as negative controls or baseline data; thus, new analytical strategies are needed to analyze transmission patterns and drivers of disease emergence. Zoonotic infections with Vaccinia virus (VACV) were first reported in Brazil in 1999, VACV is an emerging zoonotic Orthopoxvirus, which primarily infects dairy cattle and farmers in close contact with infected cows. Prospective studies of emerging pathogens could provide critical data that would inform public health planning and response to outbreaks. By using the location of 87-recorded outbreaks and publicly available bioclimatic data, we demonstrate one such approach. Using an ecological niche model (ENM) algorithm, we identify the environmental conditions under which VACV outbreaks have occurred, and determine additional locations in two affected countries that may be susceptible to transmission. Further, we show how suitability for the virus responds to different levels of various environmental factors and highlight the most important factors in determining its transmission. METHODS A literature review was performed and the geospatial coordinates of 87 molecularly confirmed VACV outbreaks in Brazil were identified. An ENM was generated using MaxENT software by combining principal component analysis results of 19 bioclim spatial layers, and 25 randomly selected subsets of the original list of 87 outbreaks. RESULTS The final ENM predicted all areas where Brazilian outbreaks occurred, one out of five of the Colombian outbreak regions and identified new regions within Brazil that are suitable for transmission based on bioclimatic factors. Further, the most important factors in determining transmission suitability are precipitation of the wettest quarter, annual precipitation, mean temperature of the coldest quarter and mean diurnal range. CONCLUSION The analyses here provide a means by which to study patterns of an emerging infectious disease and identify regions that are potentially suitable for its transmission, in spite of the paucity of high-quality critical data. Policy and methods for the control of infectious diseases often use a reactionary model, addressing diseases only after significant impact on human health has ensued. The methodology used in the present work allows the identification of areas where disease is likely to appear, which could be used for directed intervention.
Collapse
Affiliation(s)
- Claire A. Quiner
- Poxvirus and Rabies Branch, Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), US Centers for Disease Control and Prevention, Atlanta, GA USA
| | - Yoshinori Nakazawa
- Poxvirus and Rabies Branch, Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), US Centers for Disease Control and Prevention, Atlanta, GA USA
| |
Collapse
|
17
|
Miranda JB, Borges IA, Campos SPS, Vieira FN, de Ázara TMF, Marques FA, Costa GB, Luis APMF, de Oliveira JS, Ferreira PCP, Bonjardim CA, da Silva SLM, Eiras ÁE, Abrahão JS, Kroon EG, Drumond BP, Paglia AP, Trindade GDS. Serologic and Molecular Evidence of Vaccinia Virus Circulation among Small Mammals from Different Biomes, Brazil. Emerg Infect Dis 2017; 23:931-938. [PMID: 28518030 PMCID: PMC5443434 DOI: 10.3201/eid2306.161643] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Vaccinia virus (VACV) is a zoonotic agent that causes a disease called bovine vaccinia, which is detected mainly in milking cattle and humans in close contact with these animals. Even though many aspects of VACV infection have been described, much is still unknown about its circulation in the environment and its natural hosts/reservoirs. To investigate the presence of Orthopoxvirus antibodies or VACV DNA, we captured small rodents and marsupials in 3 areas of Minas Gerais state, Brazil, and tested their samples in a laboratory. A total of 336 animals were tested; positivity ranged from 18.1% to 25.5% in the 3 studied regions located in different biomes, including the Atlantic Forest and the Cerrado. Analysis of nucleotide sequences indicated co-circulation of VACV groups I and II. Our findings reinforce the possible role played by rodents and marsupials in VACV maintenance and its transmission chain.
Collapse
|
18
|
Dos Santos Pereira Andrade AC, Lima MT, Oliveira GP, Calixto RS, de Sales E Souza ÉL, da Glória de Souza D, de Almeida Leite CM, Ferreira JMS, Kroon EG, de Oliveira DB, Dos Santos Martins F, Abrahão JS. Daily ingestion of the probiotic Lactobacillus paracasei ST11 decreases Vaccinia virus dissemination and lethality in a mouse model. Benef Microbes 2017; 8:73-80. [PMID: 27873547 DOI: 10.3920/bm2016.0074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Vaccinia virus (VACV) is an important pathogen. Although studies have shown relationships between probiotics and viruses, the effect of probiotics on VACV infection is unknown. Therefore, this work aims to investigate the probiotics effects on VACV infection. Mice were divided into four groups, two non-infected groups, one receiving the probiotic, the other one not receiving it, and two groups infected intranasally with VACV Western Reserve (VACV-WR) receiving or not receiving the probiotic. Viral titres in organs and cytokine production in the lungs were analysed. Lung samples were also subjected to histological analysis. The intake of probiotic results in reduction in viral spread with a significant decrease of VACV titer on lung, liver and brain of treated group. In addition,treatment with the probiotic results in attenuated mice lung inflammation showing fewer lesions on histological findings and decreased lethality in mice infected with VACV. The ingestion of Lactobacillus paracasei ST11 (LPST11) after VACV infection resulted in 2/9 animal lethality compared with 4/9 in the VACV group. This is the first study on probiotics and VACV interactions, providing not only information about this interaction, but also proposing a model for future studies involving probiotics and other poxvirus.
Collapse
Affiliation(s)
- A C Dos Santos Pereira Andrade
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - M Teixeira Lima
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - G Pereira Oliveira
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - R Silva Calixto
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - É Lorenna de Sales E Souza
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - D da Glória de Souza
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - C M de Almeida Leite
- 2 Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - J M Siqueira Ferreira
- 3 Laboratório de Microbiologia, Universidade Federal de São João del-Rei, Av. Sebastião Gonçalves Coelho 400, 35501-296 Divinópolis, MG, Brazil
| | - E G Kroon
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - D Bretas de Oliveira
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - F Dos Santos Martins
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - J S Abrahão
- 1 Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| |
Collapse
|
19
|
Cargnelutti JF, Weiblen R, Flores EF. A multiplex PCR for viruses associated with exanthematic and vesicular disease in cattle. J Virol Methods 2016; 239:38-41. [PMID: 27793645 DOI: 10.1016/j.jviromet.2016.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 10/21/2016] [Accepted: 10/21/2016] [Indexed: 10/20/2022]
Abstract
Exanthematic and papulo-vesicular lesions in the udder and teats of milking cows are fairly common in some Brazilian dairies, especially those with poor sanitary conditions and hand milking. The orthopoxvirus Vaccinia virus (VACV) and the parapoxviruses Pseudocowpox virus (PCPV) and Bovine popular stomatitis virus (BPSV) have been frequently associated with such conditions. Elsewhere, Bovine herpesvirus 2 (BoHV-2) has also been associated with similar clinical signs. Thus, we herein describe a conventional multiplex PCR designed to detect the genome of these viruses in clinical samples while differentiating among them by amplicon size. For this, primer sets targeting the orthopoxvirus vascular growth factor (amplicon size 292bp), PCPV (374bp) and BSPV (607bp) B2L genes, and the BoHV-2 DNA polymerase gene (138bp) were selected. The chosen primers anneal within the same temperature range and do not interfere with each other during the PCR amplification. PCR conditions were initially standardized for each agent in individual PCR reactions firstly using the target virus as positive control followed by using a mixture of all four virues. Lastly, a multiplex PCR containing the four sets of primers was set up to amplify all four targeted viruses in one reaction. The multiplex PCR was able to detect DNA extracted from cell culture supernatants containing 20 TCID50 of BoHV-2 and 50 TCID50 of VACV. Further, the test could detect the viral genomes in 1:10, 1:50 and 1:1000 dilutions of total DNA extracted from clinical specimens (e.g. scabs, crusts) of natural cases (PCPV, VACV and BPSV) and 1:10 dilutions of DNA extracted from scabs collected from BoHV-2 experimentally infected cattle. A possible amplification of other orthopoxviruses, predicted by in silico analysis, was considered to not represent an important pitfall since these are exotic in Brazil, very rare, or viruses not associated with cattle. For definitive agent identification amplicon sequencing needs to be conducted. Thus, this multiplex PCR seems suitable for initial detection and identification of the agents involved in exanthematic and vesicular disease, providing a sensitive and specific diagnosis for such conditions in dairy cows.
Collapse
Affiliation(s)
- Juliana F Cargnelutti
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, building 63A, Santa Maria, Rio Grande do Sul, zip-code 97105-900, Brazil
| | - Rudi Weiblen
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, building 63A, Santa Maria, Rio Grande do Sul, zip-code 97105-900, Brazil
| | - Eduardo F Flores
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, building 63A, Santa Maria, Rio Grande do Sul, zip-code 97105-900, Brazil.
| |
Collapse
|
20
|
Geessien Kroon E, Santos Abrahão J, de Souza Trindade G, Pereira Oliveira G, Moreira Franco Luiz AP, Barbosa Costa G, Teixeira Lima M, Silva Calixto R, de Oliveira DB, Drumond BP. Natural Vaccinia Virus Infection: Diagnosis, Isolation, and Characterization. ACTA ACUST UNITED AC 2016; 42:14A.5.1-14A.5.43. [PMID: 27517335 DOI: 10.1002/cpmc.13] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Natural infections of Vaccinia virus (VACV)-the prototype species of the Orthopoxvirus genus, from the family Poxviridae and subfamily Chordopoxvirinae-cause an occupational emergent zoonotic disease that is primarily associated with the handling of infected dairy cattle. In humans, VACV infection is characterized by skin lesions, primarily on the hands, and accompanied by systemic symptoms such as fever, myalgia, headache, and lymphadenopathy. The diagnosis of VACV is usually performed according to the methods described for other orthopoxviruses. This unit describes the methods utilized to obtain clinical samples, the serological and molecular techniques used for diagnosis, and the isolation methods and techniques used for molecular and biological characterization of the viruses. © 2016 by John Wiley & Sons, Inc.
Collapse
Affiliation(s)
- Erna Geessien Kroon
- 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
| | - Giliane de Souza Trindade
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Graziele Pereira Oliveira
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Paula Moreira Franco Luiz
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Galileu Barbosa Costa
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauricio Teixeira Lima
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Rafael Silva Calixto
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Danilo Bretas de Oliveira
- Faculdade de Medicina de Diamantina, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
| | - Betânia Paiva Drumond
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| |
Collapse
|
21
|
Olinda RG, Maia LA, Cargnelutti JF, Gois RC, Batista JS, Dantas AF, Flores EF, Riet-Correa F. Swinepox dermatitis in backyard pigs in Northeastern Brazil. PESQUISA VETERINARIA BRASILEIRA 2016. [DOI: 10.1590/s0100-736x2016000600002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract: This article describes five outbreaks of swinepox in backyard pigs in Northeastern Brazil. It affected backyard pigs from herds of poor hygienic-sanitary conditions with severe fly and lice infestations. The morbidity ranged from 33.3 to 100% among affected herds, with mortality reaching up to 60%. The affected pigs developed multifocal to coalescent gray to white papules and blisters in the skin, with eventual eruptions, evolving to erosions and crusts. In addition to skin lesions, affected piglets presented apathy, anorexia and fever. The disease was auto-limiting, resolving within 15 to 25 days. Histological examination revealed proliferative and ulcerative vesiculopustular dermatitis with ballooning degeneration of epithelial cells, perivascular inflammatory infiltrates of lymphocytes, plasma cells, neutrophils, eosinophils and some macrophages in the dermis. Intracytoplasmic eosinophilic inclusions were consistently observed in keratinocytes. Total DNA extracted from fresh tissue fragments obtained from one outbreak and formalin-fixed, paraffin-embedded (FFPE) tissue from the other four outbreaks was submitted to polymerase chain reaction (PCR) for Swinepox virus (SWPV) and Vaccinia virus (VACV). Genetic SWPV material was identified by PCR in fresh material from one outbreak. Nucleotide sequencing and phylogenetic analysis of the PCR amplicons (viral polymerase gene) demonstrated 100% homology with sequences from SWPV. All tissues were PCR negative for VACV. Swine poxvirus is present in backyard pigs in Northeastern Brazil, indicating the need of including SWPV in the differential diagnosis of dermatitis in pigs.
Collapse
|
22
|
Abrahão JS, de Souza Trindade G, Pereira-Oliveira G, de Oliveira Figueiredo P, Costa G, Moreira Franco-Luiz AP, Lopes Assis F, Bretas de Oliveira D, Mattos Paim LR, de Araújo Oliveira CE, Lemos Maia Neto A, Geessien Kroon E. Detection of Vaccinia virus during an outbreak of exanthemous oral lesions in Brazilian equids. Equine Vet J 2016; 49:221-224. [PMID: 26875684 DOI: 10.1111/evj.12571] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 02/06/2016] [Indexed: 11/29/2022]
Abstract
REASONS FOR PERFORMING STUDY In August 2014, an outbreak of oral exanthematous disease in equids was reported in Brazil, affecting 11 donkeys and 3 mules. OBJECTIVES To investigate if Vaccinia virus (VACV) was the aetiological agent in this outbreak. STUDY DESIGN Investigation of clinical cases using serological, molecular and phylogenetic approaches. METHODS To analyse the presence of neutralising antibodies against VACV, samples were submitted in triplicate to a plaque-reduction neutralisation test (PRNT50% ). On the basis of previous studies which detected VACV DNA in sera, we submitted extracted DNA samples to different polymerase chain reaction (PCR) platforms targeting Orthopoxvirus (OPV) genes (C11R, A56R and A26L). The PCR products were directly sequenced in both orientations using specific primers and capillary electrophoresis. The alignment and phylogenetic analysis of the A26L and A56R nucleotide sequences (maximum likelihood) were prepared with the obtained nucleotide fragments. RESULTS Serological and molecular data suggested VACV as the aetiological agent. The neutralising antibodies against OPV were detected in 5 (55.5%) of the equids, with titres ≥40 neutralising u/ml. Based on the results obtained from all PCR platforms, all samples were positive for OPV: 9 (100%) for A56R, 4 (44.4%) for C11R and 3 (33.3%) for A26L. The alignment of the nucleotide sequences of the A26L and A56R fragments revealed that the samples were highly similar to the homologous genes from other Brazilian VACV Group 1 isolates (98.8% identity on average). Furthermore, both the A26L and A56R sequences showed signature deletions also present in the sequences of Group 1 VACV isolates from Brazil. CONCLUSIONS Our data raises questions about the role of equids in the chain of VACV epidemiology. The surveillance of equids in VACV-affected areas worldwide is relevant.
Collapse
Affiliation(s)
- J S Abrahão
- Laboratório de Vírus, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - G de Souza Trindade
- Laboratório de Vírus, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - G Pereira-Oliveira
- Laboratório de Vírus, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | | | - G Costa
- Laboratório de Vírus, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | | | - F Lopes Assis
- Laboratório de Vírus, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - D Bretas de Oliveira
- Laboratório de Vírus, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - L R Mattos Paim
- ADAB - Agência Estadual de Defesa Agropecuária da Bahia, Salvador, Brazil
| | | | - A Lemos Maia Neto
- ADAB - Agência Estadual de Defesa Agropecuária da Bahia, Salvador, Brazil
| | - E Geessien Kroon
- Laboratório de Vírus, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| |
Collapse
|
23
|
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] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
|
24
|
Medaglia MLG, Sá NMB, Correa IA, Costa LJ, Damaso CR. One-step duplex polymerase chain reaction for the detection of swinepox and vaccinia viruses in skin lesions of swine with poxvirus-related disease. J Virol Methods 2015; 219:10-13. [PMID: 25804245 DOI: 10.1016/j.jviromet.2015.03.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 01/16/2015] [Accepted: 03/13/2015] [Indexed: 11/29/2022]
Abstract
Infection of pigs with swinepox virus (SWPV) was reported in Brazil in 2011. SWPV causes a systemic pustular disease in pigs and the symptoms are clinically indistinguishable from those caused by vaccinia virus (VACV) infection. Pigs infected with VACV have been reported in various countries; however, VACV is endemic in Brazil, India and other countries, where it affects mainly dairy cows, dairy buffaloes and dairy workers causing localized pustules. The transmission of VACV to other susceptible hosts has also been detected in Brazil. Therefore, VACV should be investigated as a possible etiologic agent of pustular skin disorders in pigs. This work describes the development of a one-step duplex assay to detect swinepox and vaccinia viruses simultaneously in skin lesions of pigs with generalized pustular disease. The investigation of VACV infection in pigs is important in countries where this zoonosis is endemic and should be differentiated from SWPV infection.
Collapse
Affiliation(s)
- Maria Luiza G Medaglia
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Natália M B Sá
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Isadora A Correa
- Departamento de Virologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luciana J Costa
- Departamento de Virologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Clarissa R Damaso
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
| |
Collapse
|
25
|
From lesions to viral clones: biological and molecular diversity amongst autochthonous Brazilian vaccinia virus. Viruses 2015; 7:1218-37. [PMID: 25785515 PMCID: PMC4379567 DOI: 10.3390/v7031218] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/05/2015] [Accepted: 03/09/2015] [Indexed: 02/02/2023] Open
Abstract
Vaccinia virus (VACV) has had an important role for humanity because of its use during the smallpox eradication campaign. VACV is the etiologic agent of the bovine vaccinia (BV), an emerging zoonosis that has been associated with economic, social, veterinary and public health problems, mainly in Brazil and India. Despite the current and historical VACV importance, there is little information about its circulation, prevalence, origins and maintenance in the environment, natural reservoirs and diversity. Brazilian VACV (VACV-BR) are grouped into at least two groups based on genetic and biological diversity: group 1 (G1) and group 2 (G2). In this study, we went to the field and investigated VACV clonal diversity directly from exanthemous lesions, during BV outbreaks. Our results demonstrate that the G1 VACV-BR were more frequently isolated. Furthermore, we were able to co-detect the two variants (G1 and G2) in the same sample. Molecular and biological analysis corroborated previous reports and confirmed the co-circulation of two VACV-BR lineages. The detected G2 clones presented exclusive genetic and biological markers, distinct to reference isolates, including VACV-Western Reserve. Two clones presented a mosaic profile, with both G1 and G2 features based on the molecular analysis of A56R, A26L and C23L genes. Indeed, some SNPs and INDELs in A56R nucleotide sequences were observed among clones of the same virus population, maybe as a result of an increased mutation rate in a mixed population. These results provide information about the diversity profile in VACV populations, highlighting its importance to VACV evolution and maintenance in the environment.
Collapse
|
26
|
Assis FL, Borges IA, Mesquita VS, Ferreira PC, Trindade GS, Kroon EG, Abrahão JS. Vaccinia virus in household environment during bovine vaccinia outbreak, Brazil. Emerg Infect Dis 2014; 19:2045-7. [PMID: 24274787 PMCID: PMC3840863 DOI: 10.3201/eid1912.120937] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
27
|
Abstract
On May 8, 1980, the World Health Assembly at its 33rd session solemnly declared that the world and all its peoples had won freedom from smallpox and recommended ceasing the vaccination of the population against smallpox. Currently, a larger part of the world population has no immunity not only against smallpox but also against other zoonotic orthopoxvirus infections. Recently, recorded outbreaks of orthopoxvirus diseases not only of domestic animals but also of humans have become more frequent. All this indicates a new situation in the ecology and evolution of zoonotic orthopoxviruses. Analysis of state-of-the-art data on the phylogenetic relationships, ecology, and host range of orthopoxviruses—etiological agents of smallpox (variola virus, VARV), monkeypox (MPXV), cowpox (CPXV), vaccinia (VACV), and camelpox (CMLV)—as well as the patterns of their evolution suggests that a VARV-like virus could emerge in the course of natural evolution of modern zoonotic orthopoxviruses. Thus, there is an insistent need for organization of the international control over the outbreaks of zoonotic orthopoxvirus infections in various countries to provide a rapid response and prevent them from developing into epidemics.
Collapse
Affiliation(s)
- Sergei N. Shchelkunov
- State Research Center of Virology and Biotechnology VECTOR, Koltsovo, Novosibirsk Oblast, Russia
- Novosibirsk State University, Novosibirsk, Russia
- * E-mail: ,
| |
Collapse
|
28
|
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] [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.
Collapse
Affiliation(s)
- Felipe Lopes Assis
- Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Sant’Ana FJFD, Leal FAA, Rabelo RE, Vulcani VAS, Moreira CA, Cargnelutti JF, Flores EF. Coinfection by Vaccinia virus and an Orf virus–like parapoxvirus in an outbreak of vesicular disease in dairy cows in midwestern Brazil. J Vet Diagn Invest 2013; 25:267-72. [DOI: 10.1177/1040638713475799] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The current report describes an outbreak of vesicular disease affecting dairy cows in midwestern Brazil in which a coinfection with 2 poxviruses— Vaccinia virus (VACV) and a parapoxvirus—was demonstrated. Milking cows presented vesicles, painful reddish or whitish papules, and scabby proliferative lesions in the teats and udder, in a clinical course of approximately 10–21 days. Histologically, multifocal areas of moderate to severe acanthosis, spongiosis, hypergranulosis, and parakeratotic or orthokeratotic hyperkeratosis with adjacent focally extensive ulcers were observed in the epidermis. Rounded eosinophilic inclusion bodies were observed in the cytoplasm of epithelial cells of areas with acanthosis or necrosis. Moderate inflammatory infiltrate of lymphocytes, plasma cells, neutrophils, and macrophages were observed in some dermal areas. Two people milking the affected cows developed lesions on the hands, painful papules which progressed to ulcerative and scabby lesions in 4–7 days. Electron microscopy of scabs from 1 cow revealed the concomitant presence of orthopoxvirus and parapoxvirus particles. Scabs from 2 cows were positive by polymerase chain reaction for the parapoxvirus B2L gene; 1 of the scabs was also positive for the VACV vgf gene. Nucleotide sequencing of the B2L amplicon revealed a similarity of 96–99% with Orf virus (ORFV) and lower identity with Pseudocowpox virus (92–95%) and Bovine papular stomatitis virus (85–86%). Nucleotide sequencing of a region of parapoxvirus DNA polymerase gene revealed a high similarity (98–100%) with ORFV sequences. Thus, an unusual coinfection with VACV and a parapoxvirus, likely ORFV, was demonstrated in the outbreak.
Collapse
Affiliation(s)
- Fabiano J. F. de Sant’Ana
- Laboratory of Veterinary Pathology, Federal University of Goiás, Jataí, Goiás, Brazil (Sant’Ana, Rabelo, Vulcani, Moreira Jr.)
- Goiás Agriculture Defense Agency, Goiânia, Goiás, Brazil (Leal)
- Section of Virology, Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil (Cargnelutti, Flores)
| | - Fábio A. A. Leal
- Laboratory of Veterinary Pathology, Federal University of Goiás, Jataí, Goiás, Brazil (Sant’Ana, Rabelo, Vulcani, Moreira Jr.)
- Goiás Agriculture Defense Agency, Goiânia, Goiás, Brazil (Leal)
- Section of Virology, Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil (Cargnelutti, Flores)
| | - Rogério E. Rabelo
- Laboratory of Veterinary Pathology, Federal University of Goiás, Jataí, Goiás, Brazil (Sant’Ana, Rabelo, Vulcani, Moreira Jr.)
- Goiás Agriculture Defense Agency, Goiânia, Goiás, Brazil (Leal)
- Section of Virology, Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil (Cargnelutti, Flores)
| | - Valcinir A. S. Vulcani
- Laboratory of Veterinary Pathology, Federal University of Goiás, Jataí, Goiás, Brazil (Sant’Ana, Rabelo, Vulcani, Moreira Jr.)
- Goiás Agriculture Defense Agency, Goiânia, Goiás, Brazil (Leal)
- Section of Virology, Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil (Cargnelutti, Flores)
| | - Carlos A. Moreira
- Laboratory of Veterinary Pathology, Federal University of Goiás, Jataí, Goiás, Brazil (Sant’Ana, Rabelo, Vulcani, Moreira Jr.)
- Goiás Agriculture Defense Agency, Goiânia, Goiás, Brazil (Leal)
- Section of Virology, Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil (Cargnelutti, Flores)
| | - Juliana F. Cargnelutti
- Laboratory of Veterinary Pathology, Federal University of Goiás, Jataí, Goiás, Brazil (Sant’Ana, Rabelo, Vulcani, Moreira Jr.)
- Goiás Agriculture Defense Agency, Goiânia, Goiás, Brazil (Leal)
- Section of Virology, Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil (Cargnelutti, Flores)
| | - Eduardo F. Flores
- Laboratory of Veterinary Pathology, Federal University of Goiás, Jataí, Goiás, Brazil (Sant’Ana, Rabelo, Vulcani, Moreira Jr.)
- Goiás Agriculture Defense Agency, Goiânia, Goiás, Brazil (Leal)
- Section of Virology, Department of Preventive Veterinary Medicine, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil (Cargnelutti, Flores)
| |
Collapse
|
30
|
Assis FL, Almeida GMF, Oliveira DB, Franco-Luiz APM, Campos RK, Guedes MIM, Fonseca FG, Trindade GS, Drumond BP, Kroon EG, Abrahão JS. Characterization of a new Vaccinia virus isolate reveals the C23L gene as a putative genetic marker for autochthonous Group 1 Brazilian Vaccinia virus. PLoS One 2012. [PMID: 23189200 PMCID: PMC3506599 DOI: 10.1371/journal.pone.0050413] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Since 1999, several Vaccinia virus (VACV) isolates, the etiological agents of bovine vaccinia (BV), have been frequently isolated and characterized with various biological and molecular methods. The results from these approaches have grouped these VACV isolates into two different clusters. This dichotomy has elicited debates surrounding the origin of the Brazilian VACV and its epidemiological significance. To ascertain vital information to settle these debates, we and other research groups have made efforts to identify molecular markers to discriminate VACV from other viruses of the genus Orthopoxvirus (OPV) and other VACV-BR groups. In this way, some genes have been identified as useful markers to discriminate between the VACV-BR groups. However, new markers are needed to infer ancestry and to correlate each sample or group with its unique epidemiological and biological features. The aims of this work were to characterize a new VACV isolate (VACV DMTV-2005) molecularly and biologically using conserved and non-conserved gene analyses for phylogenetic inference and to search for new genes that would elucidate the VACV-BR dichotomy. The VACV DMTV-2005 isolate reported in this study is biologically and phylogenetically clustered with other strains of Group 1 VACV-BR, the most prevalent VACV group that was isolated during the bovine vaccinia outbreaks in Brazil. Sequence analysis of C23L, the gene that encodes for the CC-chemokine-binding protein, revealed a ten-nucleotide deletion, which is a new Group 1 Brazilian VACV genetic marker. This deletion in the C23L open reading frame produces a premature stop-codon that is shared by all Group 1 VACV-BR strains and may also reflect the VACV-BR dichotomy; the deletion can also be considered to be a putative genetic marker for non-virulent Brazilian VACV isolates and may be used for the detection and molecular characterization of new isolates.
Collapse
Affiliation(s)
- Felipe L. Assis
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gabriel M. F. Almeida
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Danilo B. Oliveira
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ana P. M. Franco-Luiz
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Rafael K. Campos
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maria I. M. Guedes
- Departamento de Medicina Veterinária Preventiva, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Flávio G. Fonseca
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Giliane S. Trindade
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Betânia P. Drumond
- Departamento de Parasitologia, Microbiologia e Imunologia, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Erna G. Kroon
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jônatas S. Abrahão
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- * E-mail:
| |
Collapse
|
31
|
Rivetti AV, Guedes MIMC, Rehfeld IS, Oliveira TML, Matos ACD, Abrahão JS, Kroon EG, Lobato ZIP. Bovine vaccinia, a systemic infection: evidence of fecal shedding, viremia and detection in lymphoid organs. Vet Microbiol 2012; 162:103-11. [PMID: 23021861 DOI: 10.1016/j.vetmic.2012.09.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 08/30/2012] [Accepted: 09/05/2012] [Indexed: 11/15/2022]
Abstract
Bovine vaccinia (BV) is a zoonosis caused by Vaccinia virus (VACV) that affects dairy cattle and milkers, causing economic losses and impacting animal and human health. Based on the clinical presentation, BV appears to be a localized disease, with lesions restricted to the skin of affected individuals. However, there are no studies on the pathogenesis of the disease in cows to determine if there is a systemic spread of the virus and if there are different ways of VACV shedding. The objective of this work was to study if there is a systemic spread of VACV in experimentally infected cows and to study the kinetics of VACV circulation in the blood and shedding in the feces of these animals. To this end, eight crossbred lactating cows were used. Three teats of each cow were inoculated with the GP2V strain of VACV. All animals were monitored daily, and blood and fecal samples were collected for 67 days post-infection (dpi). After this period, four of these previously infected cows were immunosuppressed using dexamethasone. Viral DNA was continuously detected and quantified in the blood and feces of these animals in an intermittent way, even after the resolution of the lesions. At slaughter, tissues were collected, and viral DNA was detected and quantified in the mesenteric and retromammary lymph nodes, ileum, spleen and liver. The detection of VACV DNA in the feces for a longer period (67 dpi) and in the lymphatic organs provides new evidence about VACV elimination and suggests that BV could be a systemic infection with a chronic course and viral shedding through the feces.
Collapse
Affiliation(s)
- Anselmo V Rivetti
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG) - Av. Antônio Carlos 6627, Caixa Postal 567, Campus da UFMG, CEP 30123-970, Belo Horizonte, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Guedes MIMC, Rehfeld IS, de Oliveira TML, Assis FL, Matos ACD, Abrahão JS, Kroon EG, Lobato ZIP. Detection of Vaccinia virus in blood and faeces of experimentally infected cows. Transbound Emerg Dis 2012; 60:552-5. [PMID: 22909142 DOI: 10.1111/j.1865-1682.2012.01372.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Indexed: 11/30/2022]
Abstract
Bovine vaccinia (BV), a zoonosis caused by Vaccinia virus (VACV), affects dairy cattle and milkers, causing economic, veterinary and human health impacts. Despite such impacts, there are no experimental studies about the pathogenesis of BV in cows to assess whether there is a systemic spread of the virus and whether there are different ways of VACV shedding. Trying to answer some of these questions, a study was proposed using experimental inoculation of VACV in cows. All experimentally infected cows developed lesions compatible with VACV infection in cattle. Two of the six animals presented VACV DNA in blood and faecal samples, starting at the 2nd and the 3rd day post-infection (d.p.i.), respectively, and lasting until the 36th d.p.i., in an intermittent way. This study provides new evidence that VACV can be detected in blood and faeces of infected cows, suggesting that BV could be a systemic disease, and also bringing new information about the epidemiology and pathogenesis of BV.
Collapse
Affiliation(s)
- M I M C Guedes
- Laboratório de Pesquisa em Virologia Animal, Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Fox R, Thiemann A, Everest D, Steinbach F, Dastjerdi A, Finnegan C. Molluscum contagiosum in two donkeys. Vet Rec 2012; 170:649. [DOI: 10.1136/vr.100721] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- R. Fox
- Abbey Veterinary Services; 89 Queen Street Newton Abbot Devon TQ122BG UK
| | - A. Thiemann
- The Donkey Sanctuary Sidmouth; Devon EX10 0NU UK
| | - D. Everest
- Science Division; Animal Health and Veterinary Laboratories Agency - Weybridge; Woodham Lane, New Haw Addlestone Surrey KT15 3NB UK
| | - F. Steinbach
- Science Division; Animal Health and Veterinary Laboratories Agency - Weybridge; Woodham Lane, New Haw Addlestone Surrey KT15 3NB UK
| | - A. Dastjerdi
- Science Division; Animal Health and Veterinary Laboratories Agency - Weybridge; Woodham Lane, New Haw Addlestone Surrey KT15 3NB UK
| | - C. Finnegan
- Science Division; Animal Health and Veterinary Laboratories Agency - Weybridge; Woodham Lane, New Haw Addlestone Surrey KT15 3NB UK
| |
Collapse
|
34
|
Cargnelutti JF, Schmidt C, Masuda EK, Nogueira PRK, Weiblen R, Flores EF. Vaccinia viruses isolated from skin infection in horses produced cutaneous and systemic disease in experimentally infected rabbits. Res Vet Sci 2012; 93:1070-5. [PMID: 22244689 DOI: 10.1016/j.rvsc.2011.12.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 12/20/2011] [Accepted: 12/21/2011] [Indexed: 11/29/2022]
Abstract
The susceptibility of rabbits to two isolates of Vaccinia virus (VACV) recovered from cutaneous disease in horses in Southern Brazil was investigated. Rabbits were inoculated in the ear skin with both VACV isolates, either in single or mixed infection. All inoculated animals presented local skin lesions characterized by hyperaemia, papules, vesicles, pustules and ulcers. Infectious virus was detected in the lungs and intestine of rabbits that died during acute disease. Histological examination of the skin revealed changes characteristic of those associated with members of the genus Orthopoxvirus. These results demonstrate that rabbits develop skin disease accompanied by systemic signs upon intradermal inoculation of these two equine VACV isolates, either alone or in combination, opening the way for using rabbits to study selected aspects of the biology and pathogenesis of VACV infection.
Collapse
Affiliation(s)
- Juliana Felipetto Cargnelutti
- Setor de Virologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Camobi, Santa Maria, Rio Grande do Sul, CEP 97105-900, Brazil
| | | | | | | | | | | |
Collapse
|
35
|
Vaccinia viruses isolated from cutaneous disease in horses are highly virulent for rabbits. Microb Pathog 2011; 52:192-9. [PMID: 22226666 DOI: 10.1016/j.micpath.2011.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 12/21/2011] [Accepted: 12/23/2011] [Indexed: 11/21/2022]
Abstract
Two genotypically distinct Vaccinia viruses (VACV), named P1V and P2V, were isolated from an outbreak of cutaneous disease in horses in Southern Brazil. We herein investigated the susceptibility of rabbits, a proposed animal model, to P1V and P2V infection. Groups of weanling rabbits were inoculated intranasally (IN) with P1V or P2V at low (10(2.5) TCID50), medium (10(4.5)TCID50), or high titer (10(6.5)TCID50). Rabbits inoculated with medium and high titers shed virus in nasal secretions and developed serous to hemorrhagic nasal discharge and severe respiratory distress, followed by progressive apathy and high lethality. Clinical signs appeared around days 3-6 post-inoculation (pi) and lasted up to the day of death or euthanasia (around days 5-10). Virus shedding and clinical signs were less frequent in rabbits inoculated with low virus titers. Viremia was detected in all groups, with different frequencies. Viral DNA was detected in the feces of a few animals inoculated with P1V and P2V, low titer, and with P2V at high titer. Gross necropsy findings and histological examination showed diffuse interstitial fibrousing pneumonia with necrosuppurative bronchopneumonia and intestinal liquid content. Neutralizing antibodies were detected in all inoculated animals surviving beyond day 9 pi. These results show that rabbits are highly susceptible to VACV isolated from horses, and develop severe respiratory and systemic disease upon IN inoculation. Thus, rabbits may be used to study selected aspects of VACV infection and disease.
Collapse
|
36
|
D'Anunciação L, Guedes MIM, Oliveira TL, Rehfeld I, Bonjardim CA, Ferreira PP, Trindade GDS, Lobato ZP, Kroon EG, Abrahão JS. Filling one more gap: experimental evidence of horizontal transmission of Vaccinia virus between bovines and rodents. Vector Borne Zoonotic Dis 2011; 12:61-4. [PMID: 21923268 DOI: 10.1089/vbz.2011.0671] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Vaccinia virus (VACV) has been associated with several exanthematic outbreaks in bovine, human, and equine species in Brazilian rural areas. Little is known about VACV reservoirs, although it is believed that rodents could be associated with VACV outbreaks. With the goal of filling one more gap in the VACV ecological puzzle, the present work aimed at mimicking a potential transmission route of VACV between cows and rodents, both known as natural VACV hosts. Balb/c mice were exposed to feces of experimentally VACV infected cows for 20 days, and samples from these mice were examined by using molecular and serological tests. VACV DNA was detected in feces and blood samples after several days of exposure; infectious VACV particles were also detected in the feces. The presence of anti-VACV neutralizing antibodies in murine sera further suggested horizontal transmission. If the transmission model described here can be applied to natural environments, exposure to bovine feces could be considered a risk factor for the spread of VACV; consequently, the traditional use of bovine manure as a fertilizer in agricultural activities may be promoting the infection of rodents.
Collapse
Affiliation(s)
- Lorena D'Anunciação
- Laboratório de Vírus, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Minas Gerais, Brazil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Kroon EG, Mota BEF, Abrahão JS, da Fonseca FG, de Souza Trindade G. Zoonotic Brazilian Vaccinia virus: from field to therapy. Antiviral Res 2011; 92:150-63. [PMID: 21896287 DOI: 10.1016/j.antiviral.2011.08.018] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 08/19/2011] [Accepted: 08/22/2011] [Indexed: 12/27/2022]
Abstract
Vaccinia virus (VACV), the prototype species of the Orthopoxvirus (OPV) genus, causes an occupational zoonotic disease in Brazil that is primarily associated with the handling of infected dairy cattle. Cattle and human outbreaks have been described in southeastern Brazil since 1999 and have now occurred in almost half of the territory. Phylogenetic studies have shown high levels of polymorphisms among isolated VACVs, which indicate the existence of at least two genetically divergent clades; this has also been proven in virulence assays in a mouse model system. In humans, VACV infection is characterized by skin lesions, primarily on the hands, accompanied by systemic symptoms such as fever, myalgia, headache and lymphadenopathy. In this review, we will discuss the virological, epidemiological, ecological and clinical aspects of VACV infection, its diagnosis and compounds that potentially could be used for the treatment of severe cases.
Collapse
Affiliation(s)
- Erna Geessien Kroon
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil.
| | | | | | | | | |
Collapse
|
38
|
da Fonseca FG, Kroon EG, Nogueira ML, de Souza Trindade G. Zoonotic vaccinia virus outbreaks in Brazil. Future Virol 2011. [DOI: 10.2217/fvl.11.46] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The vaccinia virus (VACV) was used as a live vaccine during the WHO-led smallpox eradication campaign in the second half of the 20th century. The program culminated with the obliteration of the disease, one of the most important achievements in modern medicine. Interestingly, one of the key factors in the successful vaccination campaign – the VACV itself – is poorly understood in relation to its natural reservoirs, evolutionary history and origins, being frequently considered extinct as a naturally occurring virus. Nevertheless, orthopoxviruses other than variola virus have been known to circulate in Brazil since the early 1960s. More specifically, VACV has been associated with naturally acquired infections in humans, cattle and possibly other reservoirs since 1999, when bovine vaccinia outbreaks started to be consistently described year after year. In this article, we list and discuss the most important VACV outbreaks that have occurred in Brazil in the last 20 years. Phylogenetic issues are considered, as the latest studies point to large genetic variance among isolates. Clinical and epidemiological data, both published and new, are presented.
Collapse
Affiliation(s)
- Flávio Guimarães da Fonseca
- Instituto René Rachou (IRR), Fundação Oswaldo Cruz, Av. Augusto de Lima 1715, Belo Horizonte, MG 30190-002, Brazil
| | - Erna Geessien Kroon
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| | - Maurício Lacerda Nogueira
- Faculdade de Medicina de São José do Rio Preto (FAMERP), Departamento de Doenças Infecciosas e Parasitárias, Av. Brigadeiro Faria Lima 5416, São José do Rio Preto, SP 15090-000, Brazil
| | - Giliane de Souza Trindade
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos 6627, Belo Horizonte, MG 31270-901, Brazil
| |
Collapse
|