1
|
Oliveira-Filho EFD, Dos Santos DR, Durães-Carvalho R, da Silva A, de Lima GB, Batista Filho AFB, Pena LJ, Gil LH. Evolutionary study of potentially zoonotic hepatitis E virus genotype 3 from swine in Northeast Brazil. Mem Inst Oswaldo Cruz 2019; 114:e180585. [PMID: 31166480 PMCID: PMC6547807 DOI: 10.1590/0074-02760180585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 05/10/2019] [Indexed: 12/27/2022] Open
Abstract
Hepatitis E virus (HEV), an emerging virus associated with acute hepatic disease, leads to thousands of deaths worldwide. HEV has already been reported in Brazil; however, there is a lack of epidemiological and molecular information on the genetic variability, taxonomy, and evolution of HEV. It is thus unclear whether hepatitis E is a neglected disease in Brazil or it has low relevance for public health in this country. Here, for the first time, we report the presence of HEV in Northeast Brazil. A total of 119 swine faecal samples were screened for the presence of HEV RNA using real-time polymerase chain reaction (RT-PCR) and further confirmed by conventional RT-PCR; among these, two samples were identified as positive. Molecular evolution analyses based on capsid sequences revealed that the samples had close proximities to HEV sequences belonging to genotype 3 and were genetically related to subtype 3f isolated in humans. Parsimony ancestral states analysis indicated gene flow events from HEV cross-species infection, suggesting an important role of pig hosts in viral spillover. HEV’s ability for zoonotic transmission by inter-species host switching as well as its possible adaptation to new animal species remain important issues for human health.
Collapse
Affiliation(s)
- Edmilson Ferreira de Oliveira-Filho
- Fundação Oswaldo Cruz-Fiocruz, Instituto Aggeu Magalhães, Departamento de Virologia, Recife, PE, Brasil.,Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, Berlin, Germany
| | - Debora Rl Dos Santos
- Universidade Federal Rural do Rio de Janeiro, Instituto de Veterinária, Seropédica, RJ, Brasil
| | - Ricardo Durães-Carvalho
- Fundação Oswaldo Cruz-Fiocruz, Instituto Aggeu Magalhães, Departamento de Virologia, Recife, PE, Brasil
| | - Adalúcia da Silva
- Fundação Oswaldo Cruz-Fiocruz, Instituto Aggeu Magalhães, Departamento de Virologia, Recife, PE, Brasil
| | - Gustavo Barbosa de Lima
- Fundação Oswaldo Cruz-Fiocruz, Instituto Aggeu Magalhães, Departamento de Microbiologia, Recife, PE, Brasil
| | | | - Lindomar J Pena
- Fundação Oswaldo Cruz-Fiocruz, Instituto Aggeu Magalhães, Departamento de Virologia, Recife, PE, Brasil
| | - Laura Hvg Gil
- Fundação Oswaldo Cruz-Fiocruz, Instituto Aggeu Magalhães, Departamento de Virologia, Recife, PE, Brasil
| |
Collapse
|