| Autor: |
Marco Rozas-Serri, Ricardo Ildefonso, Victoria Jaramillo, Estefanía Peñaloza, Camila Leiva, Soraya Barrientos, Darling Coñuecar, Lucerina Maldonado, Ariel Muñoz, Andrea Peña, Felipe Aranis, Carolina Senn |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Fishes, Vol 8, Iss 5, p 229 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2410-3888 |
| DOI: |
10.3390/fishes8050229 |
| Popis: |
Heart and skeletal muscle inflammation (HSMI) caused by Piscine orthoreovirus (PRV) was first described in farmed Atlantic salmon in Chile in 2011. However, as PRV induces long-lasting infections, it is not known when Chilean farmed salmon may have started to show PRV positivity. This study aimed to evaluate the presence/absence of PRV-1 in formalin-fixed, paraffin-embedded Atlantic salmon heart tissues (FFPE) cultured in Chile during 1992 and 1999. The most frequent histopathological findings in the 42 FFPE blocks were mild focal cardiomyocyte degeneration (57.1%) and a mild focal mononuclear inflammatory infiltrate (21.4%) in the ventricular stratum spongiosum of the heart. One of the 42 heart samples analyzed by RT-qPCR was positive for PRV-1 (2.4%). All samples were negative for other viral and bacterial pathogens that can induce similar histological changes in the heart. Taken together, our results show that PRV-1 has been present in Chile—as a low-virulence genogroup—since at least 1994, 17 years before the first HSMI outbreak in 2011. Finally, archaeovirology can be a valid alternative to contribute to the understanding of the epidemiology of diseases in aquaculture. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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