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Published in: Virology Journal 1/2017

Open Access 01-12-2017 | Research

Putative progressive and abortive feline leukemia virus infection outcomes in captive jaguarundis (Puma yagouaroundi)

Authors: Claudia Filoni, A. Katrin Helfer-Hungerbuehler, José Luiz Catão-Dias, Mara Cristina Marques, Luciana Neves Torres, Manfred Reinacher, Regina Hofmann-Lehmann

Published in: Virology Journal | Issue 1/2017

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Abstract

Background

Feline leukemia virus (FeLV) is an exogenous gammaretrovirus of domestic cats (Felis catus) and some wild felids. The outcomes of FeLV infection in domestic cats vary according to host susceptibility, virus strain, and infectious challenge dose. Jaguarundis (Puma yagouaroundi) are small wild felids from South and Central America. We previously reported on FeLV infections in jaguarundis. We hypothesized here that the outcomes of FeLV infection in P. yagouaroundi mimic those observed in domestic cats. The aim of this study was to investigate the population of jaguarundis at Fundação Parque Zoológico de São Paulo for natural FeLV infection and resulting outcomes.

Methods

We investigated the jaguarundis using serological and molecular methods and monitored them for FeLV-related diseases for 5 years. We retrieved relevant biological and clinical information for the entire population of 23 jaguarundis held at zoo. Post-mortem findings from necropsies were recorded and histopathological and immunohistopathological analyses were performed. Sequencing and phylogenetic analyses were performed for FeLV-positive samples. For sample prevalence, 95% confidence intervals (CI) were calculated. Fisher’s exact test was used to compare frequencies between infected and uninfected animals. P-values <0.05 were considered significant.

Results

In total, we detected evidence of FeLV exposure in four out of 23 animals (17%; 95% CI 5–39%). No endogenous FeLV (enFeLV) sequences were detected. An intestinal B-cell lymphoma in one jaguarundi was not associated with FeLV. Two jaguarundis presented FeLV test results consistent with an abortive FeLV infection with seroconversion, and two other jaguarundis had results consistent with a progressive infection and potentially FeLV-associated clinical disorders and post-mortem changes. Phylogenetic analysis of env revealed the presence of FeLV-A, a common origin of the virus in both animals (100% identity) and the closest similarity to FeLV-FAIDS and FeLV-3281 (98.4% identity), originally isolated from cats in the USA.

Conclusions

We found evidence of progressive and abortive FeLV infection outcomes in jaguarundis, and domestic cats were probably the source of infection in these jaguarundis.
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Metadata
Title
Putative progressive and abortive feline leukemia virus infection outcomes in captive jaguarundis (Puma yagouaroundi)
Authors
Claudia Filoni
A. Katrin Helfer-Hungerbuehler
José Luiz Catão-Dias
Mara Cristina Marques
Luciana Neves Torres
Manfred Reinacher
Regina Hofmann-Lehmann
Publication date
01-12-2017
Publisher
BioMed Central
Published in
Virology Journal / Issue 1/2017
Electronic ISSN: 1743-422X
DOI
https://doi.org/10.1186/s12985-017-0889-z

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