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Author Junki Mine

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Highly Pathogenic Avian Influenza A(H5N8) Virus Clade 2.3.4.4b, Western Siberia, Russia, 2020.

Ivan Sobolev, Kirill Sharshov, Nikita Dubovitskiy, Olga Kurskaya, Alexander Alekseev, Sergey Leonov, Yuriy Yushkov, Victor Irza, Andrey Komissarov, Artem Fadeev, Daria Danilenko, Junki Mine, Ryota Tsunekuni, Yuko Uchida, Takehiko Saito, Alexander Shestopalov,

Two variants of highly pathogenic avian influenza A(H5N8) virus were detected in dead poultry in Western Siberia, Russia, during August and September 2020. One variant was represented by viruses of clade 2.3.4.4b and the other by a novel reassortant between clade 2.3.4.4b and Eurasian low pathogenicity avian influenza viruses circulating ... Read more >>

Emerg Infect Dis (Emerging infectious diseases)
[2021, 27(8):2224-2227]

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First Outbreak of an H5N8 Highly Pathogenic Avian Influenza Virus on a Chicken Farm in Japan in 2020.

Saki Sakuma, Yuko Uchida, Momoyo Kajita, Taichiro Tanikawa, Junki Mine, Ryota Tsunekuni, Takehiko Saito,

On 5 November 2020, a confirmed outbreak due to an H5N8 highly pathogenic avian influenza virus (HPAIV) occurred at an egg-hen farm in Kagawa prefecture (western Japan). This virus, A/chicken/Kagawa/11C/2020 (Kagawa11C2020), was the first HPAI poultry isolate in Japan in 2020 and had multiple basic amino acids-a motif conferring high ... Read more >>

Viruses (Viruses)
[2021, 13(3):]

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Genetic Characterization of Influenza A Viruses in Japanese Swine in 2015 to 2019.

Junki Mine, Yuko Uchida, Nobuhiro Takemae, Takehiko Saito,

To assess the current status of influenza A viruses of swine (IAVs-S) throughout Japan and to investigate how these viruses persisted and evolve on pig farms, we genetically characterized IAVs-S isolated during 2015 to 2019. Nasal swab samples collected through active surveillance and lung tissue samples collected for diagnosis yielded ... Read more >>

J Virol (Journal of virology)
[2020, 94(14):]

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Pathogenicity of two novel human-origin H7N9 highly pathogenic avian influenza viruses in chickens and ducks.

Taichiro Tanikawa, Yuko Uchida, Nobuhiro Takemae, Ryota Tsunekuni, Junki Mine, Ming-Tsan Liu, Ji-Rong Yang, Masayuki Shirakura, Shinji Watanabe, Takato Odagiri, Takehiko Saito,

Human infection by low-pathogenic avian influenza viruses of the H7N9 subtype was first reported in March 2013 in China. Subsequently, these viruses caused five outbreaks through September 2017. In the fifth outbreak, H7N9 virus possessing a multiple basic amino acid insertion in the cleavage site of hemagglutinin emerged and caused ... Read more >>

Arch Virol (Archives of virology)
[2019, 164(2):535-545]

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Isolation of highly pathogenic H5N6 avian influenza virus in Southern Vietnam with genetic similarity to those infecting humans in China.

Ryota Tsunekuni, Kasumi Sudo, Phuong Thanh Nguyen, Bach Duc Luu, Thai Duy Phuong, Tran Minh Tan, Tung Nguyen, Junki Mine, Momoko Nakayama, Taichiro Tanikawa, Kirill Sharshov, Nobuhiro Takemae, Takehiko Saito,

Since 2013, H5N6 highly pathogenic avian influenza viruses (HPAIVs) have been responsible for outbreaks in poultry and wild birds around Asia. H5N6 HPAIV is also a public concern due to sporadic human infections being reported in China. In the current study, we isolated an H5N6 HPAIV strain (A/Muscovy duck/Long An/AI470/2018; ... Read more >>

Transbound Emerg Dis (Transboundary and emerging diseases)
[2019, 66(6):2209-2217]

Cited: 3 times

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A novel H7N3 reassortant originating from the zoonotic H7N9 highly pathogenic avian influenza viruses that has adapted to ducks.

Momoko Nakayama, Yuko Uchida, Akihiro Shibata, Yoshifumi Kobayashi, Junki Mine, Nobuhiro Takemae, Ryota Tsunekuni, Taichiro Tanikawa, Rieko Harada, Hiroyuki Osaka, Takehiko Saito,

The first human case of zoonotic H7N9 avian influenza virus (AIV) infection was reported in March 2013 in China. This virus continues to circulate in poultry in China while mutating to highly pathogenic AIVs (HPAIVs). Through monitoring at airports in Japan, a novel H7N3 reassortant of the zoonotic H7N9 HPAIVs, ... Read more >>

Transbound Emerg Dis (Transboundary and emerging diseases)
[2019, 66(6):2342-2352]

Cited: 3 times

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Genetics and pathogenicity of H5N6 highly pathogenic avian influenza viruses isolated from wild birds and a chicken in Japan during winter 2017-2018.

Junki Mine, Yuko Uchida, Momoko Nakayama, Taichiro Tanikawa, Ryota Tsunekuni, Kirill Sharshov, Nobuhiro Takemae, Ivan Sobolev, Alexander Shestpalov, Takehiko Saito,

An H5N6 highly pathogenic avian influenza virus (HPAIV) outbreak occurred in poultry in Japan during January 2018, and H5N6 HPAIVs killed several wild birds in 3 prefectures during Winter 2017-2018. Time-measured phylogenetic analyses demonstrated that the Hemagglutinin (HA) and internal genes of these isolates were genetically similar to clade 2.3.4.4.B ... Read more >>

Virology (Virology)
[2019, 533:1-11]

Cited: 4 times

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Phylogeographic evidence for the inter- and intracontinental dissemination of avian influenza viruses via migration flyways.

Junki Mine, Yuko Uchida, Kirill Sharshov, Ivan Sobolev, Alexander Shestopalov, Takehiko Saito,

Genetically related highly pathogenic avian influenza viruses (HPAIVs) of H5N6 subtype caused outbreaks simultaneously in East Asia and Europe-geographically distinct regions-during winter 2017-2018. This situation prompted us to consider whether the application of phylogeographic analysis to a particular gene segment of AIVs could provide clues for understanding how AIV had ... Read more >>

PLoS One (PloS one)
[2019, 14(6):e0218506]

Cited: 3 times

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Comparative pathogenicity of H5N6 subtype highly pathogenic avian influenza viruses in chicken, Pekin duck and Muscovy duck.

Yuko Uchida, Junki Mine, Nobuhiro Takemae, Taichiro Tanikawa, Ryota Tsunekuni, Takehiko Saito,

In Japan during the 2016-2017 winter season, clade 2.3.4.4 highly pathogenic avian influenza viruses (HPAIVs) of the H5N6 subtype caused 12 outbreaks in chicken and Muscovy duck farms. These viruses have been circulating in Vietnam and China since 2014. In this study, we evaluated the susceptibility of chicken, Pekin duck ... Read more >>

Transbound Emerg Dis (Transboundary and emerging diseases)
[2019, 66(3):1227-1251]

Cited: 8 times

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Genetic and antigenic dynamics of influenza A viruses of swine on pig farms in Thailand.

Junki Mine, Haruka Abe, Sujira Parchariyanon, Prakit Boonpornprasert, Namfon Ubonyaem, Bandit Nuansrichay, Nobuhiro Takemae, Taichiro Tanikawa, Ryota Tsunekuni, Yuko Uchida, Takehiko Saito,

Surveillance studies of influenza A virus of swine (IAV-S) have accumulated information regarding IAVs-S circulating in Thailand, but how IAVs-S evolve within a farm remains unclear. In the present study, we isolated 82 A(H1N1)pdm09 and 87 H3N2 viruses from four farms from 2011 through 2017. We then phylogenetically and antigenically ... Read more >>

Arch Virol (Archives of virology)
[2019, 164(2):457-472]

Cited: 5 times

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Spatial transmission of H5N6 highly pathogenic avian influenza viruses among wild birds in Ibaraki Prefecture, Japan, 2016-2017.

Ryota Tsunekuni, Yuji Yaguchi, Yuki Kashima, Kaoru Yamashita, Nobuhiro Takemae, Junki Mine, Taichiro Tanikawa, Yuko Uchida, Takehiko Saito,

From 29 November 2016 to 24 January 2017, sixty-three cases of H5N6 highly pathogenic avian influenza virus (HPAIV) infections were detected in wild birds in Ibaraki Prefecture, Japan. Here, we analyzed the genetic, temporal, and geographic correlations of these 63 HPAIVs to elucidate their dissemination throughout the prefecture. Full-genome sequence ... Read more >>

Arch Virol (Archives of virology)
[2018, 163(5):1195-1207]

Cited: 5 times

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Genetic and antigenic characterization of bovine viral diarrhea viruses isolated from cattle in Hokkaido, Japan.

Yuri Abe, Tomokazu Tamura, Shiho Torii, Shiho Wakamori, Makoto Nagai, Kazuya Mitsuhashi, Junki Mine, Yuri Fujimoto, Naofumi Nagashima, Fumi Yoshino, Yukihiko Sugita, Takushi Nomura, Masatoshi Okamatsu, Hiroshi Kida, Yoshihiro Sakoda,

In our previous study, we genetically analyzed bovine viral diarrhea viruses (BVDVs) isolated from 2000 to 2006 in Japan and reported that subgenotype 1b viruses were predominant. In the present study, 766 BVDVs isolated from 2006 to 2014 in Hokkaido, Japan, were genetically analyzed to understand recent epidemics. Phylogenetic analysis ... Read more >>

J Vet Med Sci (The Journal of veterinary medical science)
[2016, 78(1):61-70]

Cited: 16 times

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Five distinct reassortants of H5N6 highly pathogenic avian influenza A viruses affected Japan during the winter of 2016-2017.

Nobuhiro Takemae, Ryota Tsunekuni, Kirill Sharshov, Taichiro Tanikawa, Yuko Uchida, Hiroshi Ito, Kosuke Soda, Tatsufumi Usui, Ivan Sobolev, Alexander Shestopalov, Tsuyoshi Yamaguchi, Junki Mine, Toshihiro Ito, Takehiko Saito,

To elucidate the evolutionary pathway, we sequenced the entire genomes of 89 H5N6 highly pathogenic avian influenza viruses (HPAIVs) isolated in Japan during winter 2016-2017 and 117 AIV/HPAIVs isolated in Japan and Russia. Phylogenetic analysis showed that at least 5 distinct genotypes of H5N6 HPAIVs affected poultry and wild birds ... Read more >>

Virology (Virology)
[2017, 512:8-20]

Cited: 18 times

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Pathogenicity of border disease virus FNK2012-1 strain isolated from a pig in the natural host, sheep.

Tomokazu Tamura, Junki Mine, Shiho Torii, Yuri Fujimoto, Masatoshi Okamatsu, Yoshihiro Sakoda,

A first isolation of border disease virus (BDV) in Japan was from a pig on a farm without keeping any ruminants. Our previous study showed that this BDV, termed the FNK2012-1 strain, replicated inefficiently in swine-derived cells compared with those of ruminant origin. Pigs inoculated with this virus showed neither ... Read more >>

J Vet Med Sci (The Journal of veterinary medical science)
[2015, 77(3):341-343]

Cited: 0 times

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Co-infection of influenza A viruses of swine contributes to effective shuffling of gene segments in a naturally reared pig.

Haruka Abe, Junki Mine, Sujira Parchariyanon, Nobuhiro Takemae, Prakit Boonpornprasert, Namfon Ubonyaem, Phornnachat Patcharasinghawut, Bandit Nuansrichay, Taichiro Tanikawa, Ryota Tsunekuni, Takehiko Saito,

Following the 2009 H1N1 pandemic, surveillance activities have been accelerated globally to monitor the emergence of novel reassortant viruses. However, the mechanism by which influenza A viruses of swine (IAV-S) acquire novel gene constellations through reassortment events in natural settings remains poorly understood. To explore the mechanism, we collected 785 ... Read more >>

Virology (Virology)
[2015, 484:203-212]

Cited: 6 times

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The N-terminal domain of Npro of classical swine fever virus determines its stability and regulates type I IFN production.

Junki Mine, Tomokazu Tamura, Kazuya Mitsuhashi, Masatoshi Okamatsu, Sujira Parchariyanon, Wasana Pinyochon, Nicolas Ruggli, Jon-Duri Tratschin, Hiroshi Kida, Yoshihiro Sakoda,

The viral protein Npro is unique to the genus Pestivirus within the family Flaviviridae. After autocatalytic cleavage from the nascent polyprotein, Npro suppresses type I IFN (IFN-α/β) induction by mediating proteasomal degradation of IFN regulatory factor 3 (IRF-3). Previous studies found that the Npro-mediated IRF-3 degradation was dependent of a ... Read more >>

J Gen Virol (The Journal of general virology)
[2015, 96(Pt 7):1746-1756]

Cited: 4 times

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Intracellular membrane association of the N-terminal domain of classical swine fever virus NS4B determines viral genome replication and virulence.

Tomokazu Tamura, Nicolas Ruggli, Naofumi Nagashima, Masatoshi Okamatsu, Manabu Igarashi, Junki Mine, Martin A Hofmann, Matthias Liniger, Artur Summerfield, Hiroshi Kida, Yoshihiro Sakoda,

Classical swine fever virus (CSFV) causes a highly contagious disease in pigs that can range from a severe haemorrhagic fever to a nearly unapparent disease, depending on the virulence of the virus strain. Little is known about the viral molecular determinants of CSFV virulence. The nonstructural protein NS4B is essential ... Read more >>

J Gen Virol (The Journal of general virology)
[2015, 96(9):2623-2635]

Cited: 5 times

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Molecular, biological, and antigenic characterization of a Border disease virus isolated from a pig during classical swine fever surveillance in Japan.

Makoto Nagai, Hiroshi Aoki, Yoshihiro Sakoda, Takashi Kozasa, Kaho Tominaga-Teshima, Junki Mine, Yuri Abe, Tomokazu Tamura, Tsubasa Kobayashi, Kaoru Nishine, Kentaro Tateishi, Yudai Suzuki, Mai Fukuhara, Keitaro Ohmori, Reiko Todaka, Kazuhiko Katayama, Tetsuya Mizutani, Shigeyuki Nakamura, Hiroshi Kida, Junsuke Shirai,

In the current study, molecular, biological, and antigenic analyses were performed to characterize Border disease virus (BDV) strain FNK2012-1 isolated from a pig in 2012 in Japan. The complete genome comprises 12,327 nucleotides (nt), including a large open reading frame of 11,685 nt. Phylogenetic analysis revealed that FNK2012-1 was clustered ... Read more >>

J Vet Diagn Invest (Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc)
[2014, 26(4):547-552]

Cited: 4 times

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