Masaki Imai
University of Tokyo
110 Papers
565 Citations
Masaki Imai is an academic researcher from University of Tokyo. The author has contributed to research in topics: Virus & Medicine. The author has an hindex of 34, co-authored 73 publications. Previous affiliations of Masaki Imai include Iwate University & Global Viral.
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Papers
Experimental adaptation of an influenza H5 HA confers respiratory droplet transmission to a reassortant H5 HA/H1N1 virus in ferrets
Masaki Imai,Tokiko Watanabe,Masato Hatta,Subash C. Das,Makoto Ozawa,Makoto Ozawa,Kyoko Shinya,Gongxun Zhong,Anthony Hanson,Hiroaki Katsura,Shinji Watanabe,Chengjun Li,Eiryo Kawakami,Shinya Yamada,Maki Kiso,Yasuo Suzuki,Eileen A. Maher,Gabriele Neumann,Yoshihiro Kawaoka +18 more
TL;DR: Results indicate that H5 HA can convert to an HA that supports efficient viral transmission in mammals, and will help individuals conducting surveillance in regions with circulating H5N1 viruses to recognize key residues that predict the pandemic potential of isolate, which will inform the development, production and distribution of effective countermeasures.
In vitro and in vivo characterization of new swine-origin H1N1 influenza viruses
Yasushi Itoh,Kyoko Shinya,Maki Kiso,Tokiko Watanabe,Yoshihiro Sakoda,Masato Hatta,Yukiko Muramoto,Daisuke Tamura,Yuko Sakai-Tagawa,Takeshi Noda,Saori Sakabe,Masaki Imai,Yasuko Hatta,Shinji Watanabe,Chengjun Li,Shinya Yamada,Ken Fujii,Shin Murakami,Hirotaka Imai,Satoshi Kakugawa,Mutsumi Ito,Ryo Takano,Kiyoko Iwatsuki-Horimoto,Masayuki Shimojima,Taisuke Horimoto,Hideo Goto,Kei Takahashi,Akiko Makino,Hirohito Ishigaki,Misako Nakayama,Masatoshi Okamatsu,Kazuo Takahashi,David Warshauer,Peter A. Shult,Reiko Saito,Hiroshi Suzuki,Yousuke Furuta,Makoto Yamashita,Keiko Mitamura,Kunio Nakano,Morio Nakamura,Rebecca A. Brockman-Schneider,Hiroshi Mitamura,Masahiko Yamazaki,Norio Sugaya,M. Suresh,Makoto Ozawa,Makoto Ozawa,Gabriele Neumann,James E. Gern,Hiroshi Kida,Kazumasa Ogasawara,Yoshihiro Kawaoka +52 more
TL;DR: It is shown that CA04 is sensitive to approved and experimental antiviral drugs, suggesting that these compounds could function as a first line of defence against the recently declared S-OIV pandemic.
Syrian hamsters as a small animal model for SARS-CoV-2 infection and countermeasure development.
Masaki Imai,Kiyoko Iwatsuki-Horimoto,Masato Hatta,Samantha Loeber,Peter Halfmann,Noriko Nakajima,Tokiko Watanabe,Michiko Ujie,Kenta Takahashi,Mutsumi Ito,Shinya Yamada,Shufang Fan,Shiho Chiba,Makoto Kuroda,Lizheng Guan,Kosuke Takada,Tammy Armbrust,Aaron Balogh,Yuri Furusawa,Moe Okuda,Hiroshi Ueki,Atsuhiro Yasuhara,Yuko Sakai-Tagawa,Tiago J. S. Lopes,Tiago J. S. Lopes,Maki Kiso,Seiya Yamayoshi,Noriko Kinoshita,Norio Ohmagari,Shin-ichiro Hattori,Makoto Takeda,Hiroaki Mitsuya,Florian Krammer,Tadaki Suzuki,Yoshihiro Kawaoka,Yoshihiro Kawaoka +35 more
TL;DR: It is found that SARS-CoV-2 isolates replicate efficiently in the lungs of Syrian hamsters and cause severe pathological lesions in the lung of these animals similar to commonly reported imaging features of COVID-19 patients with pneumonia.
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SARS-CoV-2 Omicron virus causes attenuated disease in mice and hamsters
Peter Halfmann,Shun Iida,Kiyoko Iwatsuki-Horimoto,Tadashi Maemura,Maki Kiso,Suzanne M. Scheaffer,Tamarand L. Darling,Astha Joshi,Samantha Loeber,Gagandeep Singh,Stephanie L. Foster,Baoling Ying,James Brett Case,Zhenlu Chong,Bradley M. Whitener,Juan I. Moliva,Katharine Floyd,Michiko Ujie,Noriko Nakajima,Mutsumi Ito,R. Wright,Ryuta Uraki,Prajakta Warang,Matthew Gagne,Rongxiu Li,Yuko Sakai-Tagawa,Yanan Liu,Deanna Larson,Jorge E. Osorio,Juan P. Hernández-Ortiz,Amy R. Henry,Karl A Ciuoderis,Kelsey Florek,Mit Patel,Abby E. Odle,Lok-Yin Roy Wong,Allen C. Bateman,Zhongde Wang,Venkata Viswanadh Edara,John Franks,Trushar Jeevan,Thomas P. Fabrizio,Jennifer DeBeauchamp,Lisa Kercher,Patrick Seiler,Ana S. Gonzalez-Reiche,Emilia Mia Sordillo,Lauren A. Chang,Harm van Bakel,Viviana Simon,Bremy Alburquerque,Hala Alshammary,Angela Amoako,Shiraz Aslam,Radhika N. Banu,Cecilia Cognigni,Marlene Espinoza-Moraga,K. Farrugia,Adriana van de Guchte,Z. Khalil,Manon Laporte,Ignacio Mena,Alberto Paniz-Mondolfi,Jose Polanco,A.A. “Sonny” Rooker,L. Sominsky,Daniel C. Douek,Nancy J. Sullivan,Larissa B. Thackray,Hiroshi Ueki,Seiya Yamayoshi,Masaki Imai,Stanley Perlman,Richard J. Webby,Robert A. Seder,Mehul S. Suthar,Adolfo García-Sastre,Michael Schotsaert,Tadaki Suzuki,Adrianus C. M. Boon,Michael S. Diamond,Yoshihiro Kawaoka +81 more
TL;DR: In this paper , the authors evaluated the ability of several B.1.529 isolates to cause infection and disease in immunocompetent and human ACE2 (hACE2)-expressing mice and hamsters.
Transmission of SARS-CoV-2 in Domestic Cats.
Peter Halfmann,Masato Hatta,Shiho Chiba,Tadashi Maemura,Shufang Fan,Makoto Takeda,Noriko Kinoshita,Shin ichiro Hattori,Yuko Sakai-Tagawa,Kiyoko Iwatsuki-Horimoto,Masaki Imai,Yoshihiro Kawaoka,Yoshihiro Kawaoka +12 more
TL;DR: Coronavirus in Cats SARS-CoV-2 was detected in three cats after they were cohoused with cats that had been experimentally inoculated with the virus.
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