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Martini MC, Caserta LC, Dos Santos MMAB, Barnabé ACS, Durães-Carvalho R, Padilla MA, Simão RM, Rizotto LS, Simas PVM, Bastos JCS, Cardoso TC, Felippe PAN, Ferreira HL, Arns CW. Avian coronavirus isolated from a pigeon sample induced clinical disease, tracheal ciliostasis, and a high humoral response in day-old chicks. Avian Pathol 2018. [PMID: 29517348 DOI: 10.1080/03079457.2018.1442557] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The detection of avian coronaviruses (AvCoV) in wild birds and the emergence of new AvCoV have increased in the past few years. In the present study, the pathogenicity of three AvCoV isolates was investigated in day-old chicks. One AvCoV isolated from a pigeon, which clustered with the Massachusetts vaccine serotype, and two AvCoV isolated from chickens, which grouped with a Brazilian genotype lineage, were used. Clinical signs, gross lesions, histopathological changes, ciliary activity, viral RNA detection, and serology were evaluated during 42 days post infection. All AvCoV isolates induced clinical signs, gross lesions in the trachea, moderate histopathological changes in the respiratory tract, and mild changes in other tissues. AvCoV isolated from the pigeon sample caused complete tracheal ciliostasis over a longer time span. Specific viral RNA was detected in all tissues, but the highest RNA loads were detected in the digestive tract (cloacal swabs and ileum). The highest antibody levels were also detected in the group infected with an isolate from the pigeon. These results confirm the pathogenicity of Brazilian variants, which can cause disease and induce gross lesions and histopathological changes in chickens. Our results suggest that non-Galliformes birds can also play a role in the ecology of AvCoV.
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Affiliation(s)
- Matheus C Martini
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | - Leonardo C Caserta
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | | | - Ana C S Barnabé
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | - Ricardo Durães-Carvalho
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | - Marina A Padilla
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | - Raphael M Simão
- c Postgraduate Program in Experimental Epidemiology of Zoonoses, Faculty of Veterinary Medicine and Animal Science , University of Sao Paulo (FMVZ-USP) , Sao Paulo , SP , Brazil
| | - Laís S Rizotto
- c Postgraduate Program in Experimental Epidemiology of Zoonoses, Faculty of Veterinary Medicine and Animal Science , University of Sao Paulo (FMVZ-USP) , Sao Paulo , SP , Brazil
| | - Paulo V M Simas
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | - Juliana C S Bastos
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | - Tereza C Cardoso
- e DAPSA Department, Laboratory of Animal Virology and Cell Culture , College of Veterinary Medicine, Universidade Estadual Paulista , Araçatuba , SP , Brazil
| | - Paulo A N Felippe
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
| | - Helena L Ferreira
- b Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering , University of Sao Paulo (FZEA-USP) , Pirassununga , SP , Brazil.,c Postgraduate Program in Experimental Epidemiology of Zoonoses, Faculty of Veterinary Medicine and Animal Science , University of Sao Paulo (FMVZ-USP) , Sao Paulo , SP , Brazil
| | - Clarice W Arns
- a Laboratory of Animal Virology , Institute of Biology, University of Campinas-UNICAMP , Campinas , SP , Brazil
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Durães-Carvalho R, Caserta LC, Barnabé ACS, Martini MC, Simas PVM, Santos MMB, Salemi M, Arns CW. Phylogenetic and phylogeographic mapping of the avian coronavirus spike protein-encoding gene in wild and synanthropic birds. Virus Res 2015; 201:101-12. [PMID: 25771408 PMCID: PMC7114359 DOI: 10.1016/j.virusres.2015.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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] [Received: 01/10/2015] [Revised: 03/02/2015] [Accepted: 03/04/2015] [Indexed: 12/21/2022]
Abstract
The evolution and population dynamics of avian coronaviruses (AvCoVs) remain underexplored. In the present study, in-depth phylogenetic and Bayesian phylogeographic studies were conducted to investigate the evolutionary dynamics of AvCoVs detected in wild and synanthropic birds. A total of 500 samples, including tracheal and cloacal swabs collected from 312 wild birds belonging to 42 species, were analysed using molecular assays. A total of 65 samples (13%) from 22 bird species were positive for AvCoV. Molecular evolution analyses revealed that the sequences from samples collected in Brazil did not cluster with any of the AvCoV S1 gene sequences deposited in the GenBank database. Bayesian framework analysis estimated an AvCoV strain from Sweden (1999) as the most recent common ancestor of the AvCoVs detected in this study. Furthermore, the analysis inferred an increase in the AvCoV dynamic demographic population in different wild and synanthropic bird species, suggesting that birds may be potential new hosts responsible for spreading this virus.
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Affiliation(s)
- Ricardo Durães-Carvalho
- Laboratory of Virology, Department of Genetics, Evolution and Bioagents, University of Campinas (UNICAMP), São Paulo, Brazil; Emerging Pathogens Institute & Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, USA.
| | - Leonardo C Caserta
- Laboratory of Virology, Department of Genetics, Evolution and Bioagents, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Ana C S Barnabé
- Laboratory of Virology, Department of Genetics, Evolution and Bioagents, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Matheus C Martini
- Laboratory of Virology, Department of Genetics, Evolution and Bioagents, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Paulo V M Simas
- Laboratory of Virology, Department of Genetics, Evolution and Bioagents, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Márcia M B Santos
- Department of Biological Sciences, Federal University of Juiz de Fora, Minas Gerais, Brazil
| | - Marco Salemi
- Emerging Pathogens Institute & Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Clarice W Arns
- Laboratory of Virology, Department of Genetics, Evolution and Bioagents, University of Campinas (UNICAMP), São Paulo, Brazil.
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