Abstract
While neurotropic bovine astroviruses (BoAstVs) have been identified in North America and Europe, their presence has never been reported in Asia. In this study, we detected BoAstV in the brain of a steer showing neurological signs. Phylogenetic analysis revealed that the identified virus belongs to the Virginia/Human-Mink-Ovine clade, which contains most of the neurotropic astroviruses including the neurotropic BoAstVs. Similarity plot analysis showed that the virus was closely related to the American BoAstV NeuroS1 strain with respect to the ORF regions and to the European BoAstV CH13 strain in the 3′ untranslated region, suggesting the occurrence of intra-genotypic recombination events.
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Acknowledgements
We thank to Mr. Kazutoshi Matsuzaki for his kind cooperation in the field research. This work was supported by JSPS KAKENHI Grant number 15K07718.
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The present study was carried out according to the Fundamental Guidelines for Proper Conduct of Animal Experiments and Related Activities in Academic Research Institutions under the jurisdiction of the Ministry of Education, Culture, Sports, Science and Technology of Japan.
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Hirashima, Y., Okada, D., Shibata, S. et al. Whole genome analysis of a novel neurotropic bovine astrovirus detected in a Japanese black steer with non-suppurative encephalomyelitis in Japan. Arch Virol 163, 2805–2810 (2018). https://doi.org/10.1007/s00705-018-3898-3
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DOI: https://doi.org/10.1007/s00705-018-3898-3