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Matos M, Bilic I, Tvarogová J, Palmieri N, Furmanek D, Gotowiecka M, Liebhart D, Hess M. A novel genotype of avian hepatitis E virus identified in chickens and common pheasants (Phasianus colchicus), extending its host range. Sci Rep 2022; 12:21743. [PMID: 36526693 PMCID: PMC9758205 DOI: 10.1038/s41598-022-26103-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
In 2019, outbreaks of hepatitis-splenomegaly syndrome (HSS) were observed in six commercial layer chicken flocks, belonging to three different Polish farms, and characterized by increased mortality, hemorrhagic hepatitis with attached blood clots on the liver surface, and splenomegaly. Diseased flocks were initially investigated for the presence of avian hepatitis E virus (aHEV) - the etiological agent of HSS - by conventional reverse transcriptase polymerase chain reaction, which revealed aHEV sequences clustering separately from all known aHEV genotypes. Additionally, an aHEV genome was identified for the first time in common pheasants, from a flock in France, using Next Generation Sequencing. This genome clustered together with the Polish aHEVs here investigated. Complete genome aHEV sequences from the HSS outbreaks confirmed the divergent cluster, with a shared nucleotide sequence identity of 79.6-83.2% with other aHEVs, which we propose to comprise a novel aHEV genotype - genotype 7. Histology and immunohistochemistry investigations in the liver and spleen established an association between aHEV and the observed lesions in the affected birds, consolidating the knowledge on the pathogenesis of aHEV, which is still largely unknown. Thus, the present investigation extends the natural host range and genotypes of aHEV and strengthens knowledge on the pathogenesis of HSS.
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Affiliation(s)
- Miguel Matos
- grid.6583.80000 0000 9686 6466Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Ivana Bilic
- grid.6583.80000 0000 9686 6466Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Jana Tvarogová
- grid.6583.80000 0000 9686 6466Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Nicola Palmieri
- grid.6583.80000 0000 9686 6466Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | | | | | - Dieter Liebhart
- grid.6583.80000 0000 9686 6466Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Michael Hess
- grid.6583.80000 0000 9686 6466Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
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Orsztynowicz M, Pawlak P, Podstawski Z, Nizanski W, Partyka A, Gotowiecka M, Kosiniak-Kamysz K, Lechniak D. Mitochondrial DNA Copy Number in Spermatozoa of Fertile Stallions. Reprod Domest Anim 2016; 51:378-85. [DOI: 10.1111/rda.12689] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 02/29/2016] [Indexed: 11/29/2022]
Affiliation(s)
- M Orsztynowicz
- Department of Genetics and Animal Breeding; Poznan University of Life Sciences; Poznan Poland
| | - P Pawlak
- Department of Genetics and Animal Breeding; Poznan University of Life Sciences; Poznan Poland
| | - Z Podstawski
- Department of Horse Breeding; University of Agriculture in Krakow; Krakow Poland
| | - W Nizanski
- Department of Reproduction and Clinic of Farm Animals; Wroclaw University of Environmental and Life Sciences; Wroclaw Poland
| | - A Partyka
- Department of Reproduction and Clinic of Farm Animals; Wroclaw University of Environmental and Life Sciences; Wroclaw Poland
| | - M Gotowiecka
- Department of Reproduction and Clinic of Farm Animals; Wroclaw University of Environmental and Life Sciences; Wroclaw Poland
| | - K Kosiniak-Kamysz
- Department of Horse Breeding; University of Agriculture in Krakow; Krakow Poland
| | - D Lechniak
- Department of Genetics and Animal Breeding; Poznan University of Life Sciences; Poznan Poland
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