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Ashida S, Kojima S, Okura T, Kato F, Furuyama W, Urata S, Matsumoto Y. Phylogenetic analysis of the promoter element 2 of paramyxo- and filoviruses. Microbiol Spectr 2024:e0041724. [PMID: 38606982 DOI: 10.1128/spectrum.00417-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024] Open
Abstract
Paramyxo- and filovirus genomes are equipped with bipartite promoters at their 3' ends to initiate RNA synthesis. The two elements, the primary promoter element 1 (PE1) and the secondary promoter element 2 (PE2), are separated by a spacer region that must be precisely a multiple of 6 nucleotides (nts), indicating these viruses adhere to the "rule of six." However, our knowledge of PE2 has been limited to a narrow spectrum of virus species. In this study, a comparative analysis of 1,647 paramyxoviral genomes from a public database revealed that the paramyxovirus PE2 can be clearly categorized into two distinct subcategories: one marked by C repeats at every six bases (exclusive to the subfamily Orthoparamyxovirinae) and another characterized by CG repeats every 6 nts (observed in the subfamilies Avulavirinae and Rubulavirinae). This unique pattern collectively mirrors the evolutionary lineage of these subfamilies. Furthermore, we showed that PE2 of the Rubulavirinae, with the exception of mumps virus, serves as part of the gene-coding region. This may be due to the fact that the Rubulavirinae are the only paramyxoviruses that cannot propagate without RNA editing. Filoviruses have three to eight consecutive uracil repeats every six bases (UN5) in PE2, which is located in the 3' end region of the genome. We obtained PE2 sequences from 2,195 filoviruses in a public database and analyzed the sequence conservation among virus species. Our results indicate that the continuity of UN5 hexamers is consistently maintained with a high degree of conservation across virus species. IMPORTANCE The genomic intricacies of paramyxo- and filoviruses are highlighted by the bipartite promoters-promoter element 1 (PE1) and promoter element 2 (PE2)-at their 3' termini. The spacer region between these elements follows the "rule of six," crucial for genome replication. By a comprehensive analysis of paramyxoviral genome sequences, we identified distinct subcategories of PE2 based on C and CG repeats that were specific to Orthoparamyxovirinae and Avulavirinae/Rubulavirinae, respectively, mirroring their evolutionary lineages. Notably, the PE2 of Rubulavirinae is integrated into the gene-coding region, a unique trait potentially linked to its strict dependence on RNA editing for virus growth. This study also focused on the PE2 sequences in filovirus genomes. The strict conservation of the continuity of UN5 among virus species emphasizes its crucial role in viral genome replication.
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Affiliation(s)
- Shoichi Ashida
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Shohei Kojima
- Genome Immunobiology RIKEN Hakubi Research Team, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Takashi Okura
- Department of Virology 3, National Institute of Infectious Diseases, Tokyo, Japan
| | - Fumihiro Kato
- Department of Virology 3, National Institute of Infectious Diseases, Tokyo, Japan
| | - Wakako Furuyama
- National Research Center for the Control and Prevention of Infectious Diseases (CCPID), Nagasaki University, Nagasaki, Japan
| | - Shuzo Urata
- National Research Center for the Control and Prevention of Infectious Diseases (CCPID), Nagasaki University, Nagasaki, Japan
| | - Yusuke Matsumoto
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
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Wakabayashi N, Kimura R, Kuwatani M, Matsui A, Ino N, Mitsuhashi T, Kishi K, Tsuneta S, Nakagawa J, Nishioka N, Sakamoto K, Kato F, Shimizu A, Hirano S, Kudo K. Gastrointestinal: Solid pseudopapillary neoplasm of the pancreas with high-grade malignant transformation. J Gastroenterol Hepatol 2024; 39:618-619. [PMID: 38224676 DOI: 10.1111/jgh.16455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/11/2023] [Indexed: 01/17/2024]
Affiliation(s)
- N Wakabayashi
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - R Kimura
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - M Kuwatani
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - A Matsui
- Department of Gastroenterological Surgery II, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - N Ino
- Department of Gastroenterological Surgery II, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - T Mitsuhashi
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - K Kishi
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - S Tsuneta
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - J Nakagawa
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - N Nishioka
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - K Sakamoto
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - F Kato
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - A Shimizu
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - S Hirano
- Department of Gastroenterological Surgery II, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - K Kudo
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
- Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Kurosawa M, Kato F, Hishiki T, Ito S, Fujisawa H, Yamaguchi T, Moriguchi M, Hosokawa K, Watanabe T, Saito-Tarashima N, Minakawa N, Fujimuro M. Sofosbuvir Suppresses the Genome Replication of DENV1 in Human Hepatic Huh7 Cells. Int J Mol Sci 2024; 25:2022. [PMID: 38396699 PMCID: PMC10889370 DOI: 10.3390/ijms25042022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/02/2024] [Accepted: 02/04/2024] [Indexed: 02/25/2024] Open
Abstract
Dengue virus (DENV) causes dengue fever and dengue hemorrhagic fever, and DENV infection kills 20,000 people annually worldwide. Therefore, the development of anti-DENV drugs is urgently needed. Sofosbuvir (SOF) is an effective drug for HCV-related diseases, and its triphosphorylated metabolite inhibits viral RNA synthesis by the RNA-dependent RNA polymerase (RdRp) of HCV. (2'R)-2'-Deoxy-2'-fluoro-2'-methyluridine (FMeU) is the dephosphorylated metabolite produced from SOF. The effects of SOF and FMeU on DENV1 replication were analyzed using two DENV1 replicon-based methods that we previously established. First, a replicon-harboring cell assay showed that DENV1 replicon replication in human hepatic Huh7 cells was decreased by SOF but not by FMeU. Second, a transient replicon assay showed that DENV1 replicon replication in Huh7 cells was decreased by SOF; however, in hamster kidney BHK-21 cells, it was not suppressed by SOF. Additionally, the replicon replication in Huh7 and BHK-21 cells was not affected by FMeU. Moreover, we assessed the effects of SOF on infectious DENV1 production. SOF suppressed infectious DENV1 production in Huh7 cells but not in monkey kidney Vero cells. To examine the substrate recognition of the HCV and DENV1 RdRps, the complex conformation of SOF-containing DENV1 RdRp or HCV RdRp was predicted using AlphaFold 2. These results indicate that SOF may be used as a treatment for DENV1 infection.
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Affiliation(s)
- Madoka Kurosawa
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan; (M.K.); (S.I.); (H.F.); (T.Y.); (M.M.); (K.H.)
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, Tokyo 208-0011, Japan;
| | - Takayuki Hishiki
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan;
| | - Saori Ito
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan; (M.K.); (S.I.); (H.F.); (T.Y.); (M.M.); (K.H.)
| | - Hiroki Fujisawa
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan; (M.K.); (S.I.); (H.F.); (T.Y.); (M.M.); (K.H.)
| | - Tatsuo Yamaguchi
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan; (M.K.); (S.I.); (H.F.); (T.Y.); (M.M.); (K.H.)
| | - Misato Moriguchi
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan; (M.K.); (S.I.); (H.F.); (T.Y.); (M.M.); (K.H.)
| | - Kohei Hosokawa
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan; (M.K.); (S.I.); (H.F.); (T.Y.); (M.M.); (K.H.)
| | - Tadashi Watanabe
- Department of Virology, Graduate School of Medicine, University of the Ryukyus, Okinawa 903-0215, Japan;
| | - Noriko Saito-Tarashima
- Graduate School of Pharmaceutical Science, Tokushima University, Tokushima 770-8505, Japan; (N.S.-T.); (N.M.)
| | - Noriaki Minakawa
- Graduate School of Pharmaceutical Science, Tokushima University, Tokushima 770-8505, Japan; (N.S.-T.); (N.M.)
| | - Masahiro Fujimuro
- Department of Cell Biology, Kyoto Pharmaceutical University, Kyoto 607-8412, Japan; (M.K.); (S.I.); (H.F.); (T.Y.); (M.M.); (K.H.)
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Maeki T, Tajima S, Ando N, Wakimoto Y, Hayakawa K, Kutsuna S, Kato F, Taniguchi S, Nakayama E, Lim CK, Saijo M. Analysis of cross-reactivity among flaviviruses using sera of patients with dengue showed the importance of neutralization tests with paired serum samples for the correct interpretations of serological test results for dengue. J Infect Chemother 2023; 29:469-474. [PMID: 36702208 DOI: 10.1016/j.jiac.2023.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/12/2023] [Accepted: 01/22/2023] [Indexed: 01/25/2023]
Abstract
Dengue is a febrile illness caused by the dengue virus (DENV) that belongs to the genus Flavivirus in the family Flaviviridae. Cross-reactivity between flaviviruses poses a challenge while interpreting serological test results. In the present study, the cross-reactivity of sera of the patients with dengue, who traveled from Japan to DENV-endemic countries, was analyzed by using an enzyme-linked immunosorbent assay (ELISA) and neutralization test (NT). Sixteen serum samples were collected from patients with dengue and were tested for: i) IgM antibodies against Zika virus (ZIKV), West Nile virus (WNV), Japanese encephalitis virus (JEV), and tick-borne encephalitis virus (TBEV) using IgM ELISA, ii) IgG antibody against TBEV using IgG ELISA, and iii) neutralizing antibody against ZIKV, WNV, TBEV, and JEV. Among the 16 samples tested using ELISA, seven samples were IgM-positive for at least one of the other flaviviruses, and nine samples were IgG-positive for TBEV. Neutralizing antibody titers (NATs) against ZIKV, WNV, and TBEV were one-fourth or lower than those against the causative DENV in all samples. The NATs against JEV were one-fourth or lower than those against the causative DENV in six convalescent-phase serum sample among the seven convalescent-phase serum samples. The NAT against DENV of the residual one convalescent-phase serum was similar to that against JEV and that against JEV of its relevant acute-phase serum sample. These results showed that NTs with paired serum samples are important to correctly interpret the serological test results for DENV.
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Affiliation(s)
- Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan.
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Naokatsu Ando
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Yuji Wakimoto
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Kayoko Hayakawa
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Satoshi Kutsuna
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
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5
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Bae C, Katoh H, Wakata A, Sakata M, Kato F, Takeda M. Demonstration of bacterium-free very rapid reverse genetics system using mumps virus. Microbiol Immunol 2023; 67:44-47. [PMID: 36259144 PMCID: PMC10092663 DOI: 10.1111/1348-0421.13032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/20/2022] [Accepted: 09/30/2022] [Indexed: 01/10/2023]
Abstract
The reverse genetics system is a very powerful tool for analyzing the molecular mechanisms of viral propagation and pathogenesis. However, full-length genome plasmid construction is highly time-consuming and laborious, and undesired mutations may be introduced by Escherichia coli. This study shows a very rapid E. coli-free method of full-genome construction using the mumps virus as an example. This method was able to reduce dramatically the time for full-genome construction, which was used very efficiently for virus rescue, from several days or more to ~2 days, with a similar accuracy and yield to the conventional method using E. coli/plasmid.
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Affiliation(s)
- Chaewon Bae
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Aika Wakata
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Masafumi Sakata
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
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6
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Liu Y, Katoh H, Sekizuka T, Bae C, Wakata A, Kato F, Sakata M, Yamaji T, Wang Z, Takeda M. SNARE protein USE1 is involved in the glycosylation and the expression of mumps virus fusion protein and important for viral propagation. PLoS Pathog 2022; 18:e1010949. [PMID: 36480520 PMCID: PMC9731409 DOI: 10.1371/journal.ppat.1010949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/24/2022] [Indexed: 12/13/2022] Open
Abstract
Mumps virus (MuV) is the etiological agent of mumps, a disease characterized by painful swelling of the parotid glands and often accompanied by severe complications. To understand the molecular mechanism of MuV infection, a functional analysis of the involved host factors is required. However, little is known about the host factors involved in MuV infection, especially those involved in the late stage of infection. Here, we identified 638 host proteins that have close proximity to MuV glycoproteins, which are a major component of the viral particles, by proximity labeling and examined comprehensive protein-protein interaction networks of the host proteins. From siRNA screening and immunoprecipitation results, we found that a SNARE subfamily protein, USE1, bound specifically to the MuV fusion (F) protein and was important for MuV propagation. In addition, USE1 plays a role in complete N-linked glycosylation and expression of the MuV F protein.
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Affiliation(s)
- Yaqing Liu
- Department of Virology III, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
- Department of Virology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
- * E-mail:
| | - Tsuyoshi Sekizuka
- Pathogen Genomics Center, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Chaewon Bae
- Department of Virology III, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
| | - Aika Wakata
- Department of Virology III, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
| | - Masafumi Sakata
- Department of Virology III, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
| | - Toshiyuki Yamaji
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Zhiyu Wang
- Department of Virology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Diseases, Musashimurayama, Tokyo, Japan
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7
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Watanabe Y, Suzuki Y, Emi A, Murakawa T, Hishiki T, Kato F, Sakaguchi S, Wu H, Yano T, Lim CK, Takasaki T, Nakano T. Identification of the corticotropin-releasing factor receptor 1 antagonists as inhibitors of Chikungunya virus replication using a Gaussia luciferase–expressing subgenomic replicon. Biochem Biophys Res Commun 2022; 637:181-188. [DOI: 10.1016/j.bbrc.2022.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022]
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Kidokoro M, Shiino T, Yamaguchi T, Nariai E, Kodama H, Nakata K, Sano T, Gotou K, Kisu T, Maruyama T, Kuba Y, Sakata W, Higashi T, Kiyota N, Sakai T, Yahiro S, Nagita A, Watanabe K, Hirokawa C, Hamabata H, Fujii Y, Yamamoto M, Yokoi H, Sakamoto M, Saito H, Shibata C, Inada M, Fujitani M, Minagawa H, Ito M, Shima A, Murano K, Katoh H, Kato F, Takeda M, Suga S. Nationwide and long-term molecular epidemiologic studies of mumps viruses that circulated in Japan between 1986 and 2017. Front Microbiol 2022; 13:728831. [PMID: 36386684 PMCID: PMC9650061 DOI: 10.3389/fmicb.2022.728831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/21/2022] [Indexed: 11/25/2022] Open
Abstract
In Japan, major mumps outbreaks still occur every 4–5 years because of low mumps vaccine coverage (30–40%) owing to the voluntary immunization program. Herein, to prepare for a regular immunization program, we aimed to reveal the nationwide and long-term molecular epidemiological trends of the mumps virus (MuV) in Japan. Additionally, we performed whole-genome sequencing (WGS) using next-generation sequencing to assess results from conventional genotyping using MuV sequences of the small-hydrophobic (SH) gene. We analyzed 1,064 SH gene sequences from mumps clinical samples and MuV isolates collected from 25 prefectures from 1986 to 2017. The results showed that six genotypes, namely B (110), F (1), G (900), H (3), J (41), and L (9) were identified, and the dominant genotypes changed every decade in Japan since the 1980s. Genotype G has been exclusively circulating since the early 2000s. Seven clades were identified for genotype G using SH sequence-based classification. To verify the results, we performed WGS on 77 representative isolates of genotype G using NGS and phylogenetically analyzed them. Five clades were identified with high bootstrap values and designated as Japanese clade (JPC)-1, -2, -3, -4, -5. JPC-1 and -3 accounted for over 80% of the total genotype G isolates (68.3 and 13.8%, respectively). Of these, JPC-2 and -5, were newly identified clades in Japan through this study. This is the first report describing the nationwide and long-term molecular epidemiology of MuV in Japan. The results provide information about Japanese domestic genotypes, which is essential for evaluating the mumps elimination progress in Japan after the forthcoming introduction of the mumps vaccine into Japan’s regular immunization program. Furthermore, the study shows that WGS analysis using NGS is more accurate than results obtained from conventional SH sequence-based classification and is a powerful tool for accurate molecular epidemiology studies.
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Affiliation(s)
- Minoru Kidokoro
- Department of Quality Assurance, Radiation Safety, and Information Management, National Institute of Infectious Diseases, Tokyo, Japan
- *Correspondence: Minoru Kidokoro,
| | - Teiichiro Shiino
- Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Tomohiro Yamaguchi
- Public Hygiene Division, Gifu Prefectural Tono Region Public Health Center, Tajimi, Japan
| | - Eri Nariai
- Department of Health and Food Safety, Ishikawa Prefectural Institute of Public Health and Environmental Science, Kanazawa, Japan
| | - Hiroe Kodama
- Department of Health and Food Safety, Ishikawa Prefectural Institute of Public Health and Environmental Science, Kanazawa, Japan
| | - Keiko Nakata
- Division of Virology, Osaka Institute of Public Health, Osaka, Japan
| | - Takako Sano
- Division of Microbiology, Kanagawa Prefectural Institute of Public Health, Chigasaki, Japan
| | - Keiko Gotou
- Division of Virology, Ibaraki Prefectural Institute of Public Health, Mito, Ibaraki, Japan
| | - Tomoko Kisu
- Virus Research Center, Clinical Research Division, Sendai National Hospital, Sendai, Japan
| | - Tomomi Maruyama
- Department of Infectious Diseases, Gifu Prefectural Research Institute for Health and Environmental Sciences, Kakamigahara, Japan
| | - Yumani Kuba
- Department of Medical Microbiology and zoology, Okinawa Prefectural Institute of Health and Environment, Uruma, Japan
| | - Wakako Sakata
- Kitakyushu City Institute of Health and Environmental Sciences, Kitakyushu, Japan
| | - Teruaki Higashi
- Kitakyushu City Institute of Health and Environmental Sciences, Kitakyushu, Japan
| | - Naoko Kiyota
- Department of Microbiology, Kumamoto Prefectural Institute of Public-Health and Environmental Science, Uto, Japan
| | - Takashi Sakai
- Department of Microbiology, Kumamoto Prefectural Institute of Public-Health and Environmental Science, Uto, Japan
| | - Shunsuke Yahiro
- Department of Microbiology, Kumamoto Prefectural Institute of Public-Health and Environmental Science, Uto, Japan
| | - Akira Nagita
- Department of Pediatrics, Mizushima Central Hospital, Kurashiki, Japan
| | - Kaori Watanabe
- Virology Section, Niigata Prefectural Institute of Public Health and Environmental Sciences, Niigata, Japan
| | - Chika Hirokawa
- Virology Section, Niigata Prefectural Institute of Public Health and Environmental Sciences, Niigata, Japan
| | | | - Yoshiki Fujii
- Division of Biological Science, Hiroshima City Institute of Public Health, Hiroshima, Japan
| | - Miwako Yamamoto
- Division of Biological Science, Hiroshima City Institute of Public Health, Hiroshima, Japan
| | - Hajime Yokoi
- Health Science Division, Chiba City Institute of Health and Environment, Chiba, Japan
| | - Misako Sakamoto
- Health Science Division, Chiba City Institute of Health and Environment, Chiba, Japan
| | - Hiroyuki Saito
- Department of Microbiology, Akita Prefectural Research Center for Public Health and Environment, Akita, Japan
| | - Chihiro Shibata
- Department of Microbiology, Akita Prefectural Research Center for Public Health and Environment, Akita, Japan
| | - Machi Inada
- Virology and Epidemiology Division, Nara Prefecture Institute of Health, Sakurai, Japan
| | - Misako Fujitani
- Virology and Epidemiology Division, Nara Prefecture Institute of Health, Sakurai, Japan
| | - Hiroko Minagawa
- Laboratory of Virology, Aichi Prefectural Institute of Public Health, Nagoya, Japan
| | - Miyabi Ito
- Laboratory of Virology, Aichi Prefectural Institute of Public Health, Nagoya, Japan
| | - Akari Shima
- Microbiology Division, Saga Prefectural Institute of Public Health and Pharmaceutical Research, Saga, Japan
| | - Keiko Murano
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shigeru Suga
- Department of Pediatrics, National Hospital Organization Mie National Hospital, Tsu, Japan
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Wakata A, Katoh H, Kato F, Takeda M. Nucleolar Protein Treacle Is Important for the Efficient Growth of Mumps Virus. J Virol 2022; 96:e0072222. [PMID: 36135364 PMCID: PMC9555161 DOI: 10.1128/jvi.00722-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The nucleolus is the largest structure in the nucleus, and it plays roles in mediating cellular stress responses and regulating cell proliferation, as well as in ribosome biosynthesis. The nucleolus is composed of a variety of nucleolar factors that interact with each other in a complex manner to enable its function. Many viral proteins interact with nucleolar factors as well, affecting cellular morphology and function. Here, to investigate the association between mumps virus (MuV) infection and the nucleolus, we evaluated the necessity of nucleolar factors for MuV proliferation by performing a knockdown of these factors with small interfering (si)RNAs. Our results reveal that suppressing the expression of Treacle, which is required for ribosome biosynthesis, reduced the proliferative potential of MuV. Additionally, the one-step growth kinetics results indicate that Treacle knockdown did not affect the viral RNA and protein synthesis of MuV, but it did impair the production of infectious virus particles. Viral matrix protein (M) was considered a candidate Treacle interaction partner because it functions in the process of particle formation in the viral life cycle and is partially localized in the nucleolus. Our data confirm that MuV M can interact with Treacle and colocalize with it in the nucleolus. Furthermore, we found that viral infection induces relocalization of Treacle in the nucleus. Together, these findings suggest that interaction with Treacle in the nucleolus is important for the M protein to exert its functions late in the MuV life cycle. IMPORTANCE The nucleolus, which is the site of ribosome biosynthesis, is a target organelle for many viruses. It is increasingly evident that viruses can favor their own replication and multiplication by interacting with various nucleolar factors. In this study, we found that the nucleolar protein Treacle, known to function in the transcription and processing of pre-rRNA, is required for the efficient propagation of mumps virus (MuV). Specifically, our data indicate that Treacle is not involved in viral RNA or protein synthesis but is important in the processes leading to viral particle production in MuV infection. Additionally, we determined that MuV matrix protein (M), which functions mainly in viral particle assembly and budding, colocalized and interacted with Treacle. Furthermore, we found that Treacle is distributed throughout the nucleus in MuV-infected cells. Our research shows that the interaction between M and Treacle supports efficient viral growth in the late stage of MuV infection.
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Affiliation(s)
- Aika Wakata
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
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Tokunaga R, Takahashi Y, Touj S, Hotta H, Leblond H, Kato F, Piché M. Attenuation of widespread hypersensitivity to noxious mechanical stimuli by inhibition of GABAergic neurons of the right amygdala in a rat model of chronic back pain. Eur J Pain 2022; 26:911-928. [DOI: 10.1002/ejp.1921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 02/06/2022] [Indexed: 11/06/2022]
Affiliation(s)
- R. Tokunaga
- Department of Anatomy Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
- CogNAC Research Group Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
| | - Y. Takahashi
- Department of Neuroscience Jikei University School of Medicine Tokyo Japan
| | - S. Touj
- Department of Anatomy Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
- CogNAC Research Group Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
| | - H. Hotta
- Department of Autonomic Neuroscience Tokyo Metropolitan Institute of Gerontology Tokyo Japan
| | - H. Leblond
- Department of Anatomy Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
- CogNAC Research Group Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
| | - F. Kato
- Department of Neuroscience Jikei University School of Medicine Tokyo Japan
| | - M. Piché
- Department of Anatomy Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
- CogNAC Research Group Université du Québec à Trois‐Rivières Trois‐Rivières QC Canada G9A 5H7
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11
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Yoshimura T, Sugae Y, Ogi T, Kato F, Ijiri M. Development of energy intensive multifunction cavitation technology and its application to the surface modification of the Ni-based columnar crystal superalloy CM186LC. Heliyon 2021; 7:e08572. [PMID: 34917827 PMCID: PMC8669314 DOI: 10.1016/j.heliyon.2021.e08572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/26/2021] [Accepted: 12/06/2021] [Indexed: 11/25/2022] Open
Abstract
The present work demonstrates a technique for the hot forging of metal surfaces in water at 1000 °C or higher, termed energy-intensive multifunctional cavitation (EI-MFC). In this process, the energy of cavitation bubbles is maximized, following which these bubbles collide with the metal surface. This technique will be employed to improve the surface structure of CM186LC/DS, a Ni-based columnar crystalline superalloy used to manufacture the rotor blades of jet engines and gas turbines that are exposed to high-temperature oxidizing environments, with the aim of improving creep strength. EI-MFC processing induces compressive residual stress in the metal that prevents the occurrence of surface cracks and also increases surface hardness, improves corrosion resistance, and increases the coefficient of friction. The latter effect can enhance the adhesion of thermal barrier coatings applied to Ni-based superalloys by thermal spraying. The technology demonstrated herein can be applied to present-day jet engine and gas turbine components and also to the production of hydrogen combustion turbines operating at 1700 °C with higher combustion efficiency than the current 1500 °C class gas turbines. In addition, the high processing energy obtained using the EI-MFC technique has the potential to flatten rough surfaces resulting from the stacking pitches of various metals manufactured using three-dimensional printers, and so improve surface strength.
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Affiliation(s)
- Toshihiko Yoshimura
- Department of Mechanical Engineering, Sanyo-Onoda City University, 1-1-1 Daigaku-dori, Sanyo-Onoda, Yamaguchi, 756-0884, Japan
| | - Yuji Sugae
- Department of Mechanical Engineering, Sanyo-Onoda City University, 1-1-1 Daigaku-dori, Sanyo-Onoda, Yamaguchi, 756-0884, Japan
| | - Takayuki Ogi
- Department of Mechanical Engineering, Sanyo-Onoda City University, 1-1-1 Daigaku-dori, Sanyo-Onoda, Yamaguchi, 756-0884, Japan
| | - Fumihiro Kato
- Department of Mechanical Engineering, Sanyo-Onoda City University, 1-1-1 Daigaku-dori, Sanyo-Onoda, Yamaguchi, 756-0884, Japan
| | - Masataka Ijiri
- Department of Mechanical Systems Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
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Kato F, Nakatsu Y, Murano K, Wakata A, Kubota T, Hishiki T, Yamaji T, Kidokoro M, Katoh H, Takeda M. Antiviral Activity of CD437 Against Mumps Virus. Front Microbiol 2021; 12:751909. [PMID: 34867872 PMCID: PMC8636907 DOI: 10.3389/fmicb.2021.751909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 10/14/2021] [Indexed: 12/01/2022] Open
Abstract
Many efforts have been dedicated to the discovery of antiviral drug candidates against the mumps virus (MuV); however, no specific drug has yet been approved. The development of efficient screening methods is a key factor for the discovery of antiviral candidates. In this study, we evaluated a screening method using an Aequorea coerulescens green fluorescent protein-expressing MuV infectious molecular clone. The application of this system to screen for active compounds against MuV replication revealed that CD437, a retinoid acid receptor agonist, has anti-MuV activity. The point of antiviral action was a late step(s) in the MuV life cycle. The replication of other paramyxoviruses was also inhibited by CD437. The induction of retinoic acid-inducible gene (RIG)-I expression is a reported mechanism for the antiviral activity of retinoids, but our results indicated that CD437 did not stimulate RIG-I expression. Indeed, we observed antiviral activity despite the absence of RIG-I, suggesting that CD437 antiviral activity does not require RIG-I induction.
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Affiliation(s)
- Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuichiro Nakatsu
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Keiko Murano
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Aika Wakata
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Toru Kubota
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takayuki Hishiki
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health, Chigasaki, Japan
| | - Toshiyuki Yamaji
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Minoru Kidokoro
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Quality Assurance, Radiological Safety, and Information Management, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
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Yoshimura T, Nishioka K, Hashimoto T, Kogame S, Seki K, Sugimori H, Yamashina H, Kato F, Aoyama H, Kudo K, Shimizu S. Evaluation of Visualizing the Prostatic Urinary Tract in MRI With a Super Resolution Deep Learning Model for Urethra Sparing Radiotherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Nakayama E, Kato F, Tajima S, Ogawa S, Yan K, Takahashi K, Sato Y, Suzuki T, Kawai Y, Inagaki T, Taniguchi S, Le TT, Tang B, Prow NA, Uda A, Maeki T, Lim CK, Khromykh AA, Suhrbier A, Saijo M. Neuroinvasiveness of the MR766 strain of Zika virus in IFNAR-/- mice maps to prM residues conserved amongst African genotype viruses. PLoS Pathog 2021; 17:e1009788. [PMID: 34310650 PMCID: PMC8341709 DOI: 10.1371/journal.ppat.1009788] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 08/05/2021] [Accepted: 07/07/2021] [Indexed: 12/23/2022] Open
Abstract
Zika virus (ZIKV) strains are classified into the African and Asian genotypes. The higher virulence of the African MR766 strain, which has been used extensively in ZIKV research, in adult IFNα/β receptor knockout (IFNAR-/-) mice is widely viewed as an artifact associated with mouse adaptation due to at least 146 passages in wild-type suckling mouse brains. To gain insights into the molecular determinants of MR766's virulence, a series of genes from MR766 were swapped with those from the Asian genotype PRVABC59 isolate, which is less virulent in IFNAR-/- mice. MR766 causes 100% lethal infection in IFNAR-/- mice, but when the prM gene of MR766 was replaced with that of PRVABC59, the chimera MR/PR(prM) showed 0% lethal infection. The reduced virulence was associated with reduced neuroinvasiveness, with MR766 brain titers ≈3 logs higher than those of MR/PR(prM) after subcutaneous infection, but was not significantly different in brain titers of MR766 and MR/PR(prM) after intracranial inoculation. MR/PR(prM) also showed reduced transcytosis when compared with MR766 in vitro. The high neuroinvasiveness of MR766 in IFNAR-/- mice could be linked to the 10 amino acids that differ between the prM proteins of MR766 and PRVABC59, with 5 of these changes affecting positive charge and hydrophobicity on the exposed surface of the prM protein. These 10 amino acids are highly conserved amongst African ZIKV isolates, irrespective of suckling mouse passage, arguing that the high virulence of MR766 in adult IFNAR-/- mice is not the result of mouse adaptation.
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Affiliation(s)
- Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shinya Ogawa
- Department of Applied Biological Chemistry, School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kexin Yan
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Kenta Takahashi
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuko Sato
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tadaki Suzuki
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yasuhiro Kawai
- Management Department of Biosafety and Laboratory Animal, Division of Biosafety Control and Research, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takuya Inagaki
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Thuy T. Le
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Bing Tang
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Natalie A. Prow
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Australian Infectious Disease Research Centre, GVN Center of Excellence, The University of Queensland and QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Akihiko Uda
- Department of Veterinary Science, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Alexander A. Khromykh
- Australian Infectious Disease Research Centre, GVN Center of Excellence, The University of Queensland and QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Andreas Suhrbier
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Australian Infectious Disease Research Centre, GVN Center of Excellence, The University of Queensland and QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
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15
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Watanabe S, Iozumi K, Abe M, Ito Y, Uesugi T, Onoduka T, Kato I, Kato F, Kodama K, Takahashi H, Takeda O, Tomizawa K, Tateishi Y, Fujii M, Mayama J, Muramoto F, Yasuda H, Yamanaka K, Oh-I T, Kasai H, Tsuboi R, Hattori N, Maruyama R, Omi T, Shimoyama H, Nakasu I, Watanabe-Okada E, Nishimoto S, Mochizuki T, Fukuzawa M, Seishima M, Sugiura K, Yamamoto O, Shindo M, Kiryu H, Kusuhara M, Takenaka M. Clinical effectiveness of efinaconazole 10% solution for treatment of onychomycosis with longitudinal spikes. J Dermatol 2021; 48:1474-1481. [PMID: 34212423 PMCID: PMC8518491 DOI: 10.1111/1346-8138.16035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/31/2021] [Indexed: 11/29/2022]
Abstract
Onychomycosis with longitudinal spikes in the nail plate has been reported to be refractory to oral drugs as with dermatophytoma. We evaluated the efficacy of 10% efinaconazole solution in the treatment of onychomycosis with longitudinal spikes. Of the 223 subjects who were enrolled in a previous study, a post‐hoc analysis of 82 subjects with longitudinal spikes was performed in this study. The opacity ratio of longitudinal spikes was decreased over time from 8.1 to 0.9 at the final assessment. In addition, the longitudinal spike disappearance rate increased early after the application to 81.7% at the final assessment. Therefore, 10% efinaconazole solution can be a first‐line drug for longitudinal spikes, which have been regarded as refractory to oral drugs.
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Affiliation(s)
- Shinichi Watanabe
- Department of Dermatology, Teikyo University School of Medicine, Tokyo, Japan
| | - Ken Iozumi
- Department of Dermatology, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | | | | | | | | | - Ichiro Kato
- Eniwa Station Dermatology Clinic, Eniwa, Japan
| | | | | | | | - Osamu Takeda
- Takeda Dermatological Skin Care Clinic, Sapporo, Japan
| | | | | | - Mizue Fujii
- Department of Dermatology, Asahikawa Medical University Hospital, Asahikawa, Japan
| | - Jun Mayama
- Chitose Dermatology and Plastic Surgery Clinic, Chitose,, Japan
| | | | | | | | | | - Hiroko Kasai
- Department of Dermatology, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Ryoji Tsuboi
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | | | | | - Tokuya Omi
- Queen's Square Medical Center, Yokohama, Japan
| | - Harunari Shimoyama
- Department of Dermatology, Teikyo University Mizonokuchi Hospital, Kawasaki, Japan
| | | | - Emiko Watanabe-Okada
- Department of Dermatology, Saiseikai Yokohama-shi Tobu Hospital, Yokohama, Japan.,Department of Dermatology, Saiseikai Kanagawa Hospital, Yokohama, Japan
| | - Shuhei Nishimoto
- Department of Dermatology, Kawasaki Municipal Hospital, Kawasaki, Japan
| | - Takashi Mochizuki
- Department of Dermatology, Kanazawa Medical University, Kanazawa, Japan
| | - Masao Fukuzawa
- Department of Dermatology, Ina Central Hospital, Ina, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan
| | - Masahisa Shindo
- Department of Dermatology, National Hospital Organization Hamada Medical Center, Hamada, Japan
| | | | | | - Motoi Takenaka
- Department of Dermatology, Nagasaki University Hospital, Nagasaki, Japan
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Abstract
Telexistence refers to the general technology that allows humans to experience the real-time sensation of being in another place, interacting with a remote environment, which may be real, virtual, or a combination of both. It also refers to an advanced type of teleoperation system that allows an operator behind the controls to perform remote tasks dexterously with the feeling of being in a surrogate robot working in a remote environment. Telexistence in a real environment through a virtual environment is also possible. The concept was originally proposed by the first author in 1980, and its feasibility has been demonstrated through the construction of alter-ego robot systems called Telexistence Surrogate Anthropomorphic Robot (TELESAR) I–V. TELESAR VI is a newly developed telexistence platform for the ACCEL Embodied Media Project. It was designed and implemented with a mechanically unconstrained full-body master cockpit and a 67 degrees-of-freedom (DOF) anthropomorphic avatar robot. The avatar robot can operate in a sitting position since the main area of operation is intended to be manipulation and gestural. The system provides a full-body experience of our extended “body schema,” which allows users to maintain an up-to-date representation in space of the positions of their different body parts, including their head, torso, arms, hands, and legs. All ten fingers of the avatar robot are equipped with force, vibration, and temperature sensors and can faithfully transmit these elements of haptic information. Thus, the combined use of the robot and audiovisual information actualizes the remote sense of existence, as if the users physically existed there, with the avatar robot serving as their new body. With this experience, users can perform tasks dexterously and feel the robot’s body as their own, which provides the most simple and fundamental experience of a remote existence.
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Affiliation(s)
- Susumu Tachi
- Institute of Gerontology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yasuyuki Inoue
- Institute of Gerontology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Fumihiro Kato
- Institute of Gerontology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Aonuma H, Iizuka-Shiota I, Hoshina T, Tajima S, Kato F, Hori S, Saijo M, Kanuka H. Detection and discrimination of multiple strains of Zika virus by reverse transcription-loop-mediated isothermal amplification. Trop Med Health 2020; 48:87. [PMID: 33100882 PMCID: PMC7576873 DOI: 10.1186/s41182-020-00274-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 10/12/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Monitoring both invasion of Zika virus disease into free countries and circulation in endemic countries is essential to avoid a global pandemic. However, the difficulty lies in detecting Zika virus due to the large variety of mutations in its genomic sequence. To develop a rapid and simple method with high accuracy, reverse transcription-loop-mediated isothermal amplification (RT-LAMP) was adopted for the detection of Zika virus strains derived from several countries. RESULTS Common primers for RT-LAMP were designed based on the genomic sequences of two standard Zika strains: African lineage, MR-766, and Asian lineage, PRVABC59. RT-LAMP reactions using a screened primer set, targeting the NS3 region, detected both Zika virus strains. The minimum detectable quantity was 3 × 10-2 ng of virus RNA. Measurable lag of reaction times among strains was observed. The RT-LAMP method amplified the target virus sequence from the urine and serum of a patient with a travel history in the Caribbean Islands and also provided a prediction about which lineage of Zika virus strain was present. CONCLUSIONS The RT-LAMP method using a well-optimized primer set demonstrated high specificity and sensitivity for the detection of Zika virus strains with a variety in genomic RNA sequences. In combination with the simplicity of LAMP reaction in isothermal conditions, the optimized primer set established in this study may facilitate rapid and accurate diagnosis of Zika fever patients with virus strain information.
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Affiliation(s)
- Hiroka Aonuma
- Department of Tropical Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Center for Medical Entomology, The Jikei University School of Medicine, Tokyo, Japan
| | - Itoe Iizuka-Shiota
- Department of Tropical Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Center for Medical Entomology, The Jikei University School of Medicine, Tokyo, Japan
- Present Address: Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, USA
| | - Tokio Hoshina
- Department of Tropical Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Department of Infectious Diseases and Infection Control, The Jikei University School of Medicine, Tokyo, Japan
| | - Shigeru Tajima
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Fumihiro Kato
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Seiji Hori
- Department of Infectious Diseases and Infection Control, The Jikei University School of Medicine, Tokyo, Japan
| | - Masayuki Saijo
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hirotaka Kanuka
- Department of Tropical Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Center for Medical Entomology, The Jikei University School of Medicine, Tokyo, Japan
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Kato F, Matsuyama S, Kawase M, Hishiki T, Katoh H, Takeda M. Antiviral activities of mycophenolic acid and IMD-0354 against SARS-CoV-2. Microbiol Immunol 2020; 64:635-639. [PMID: 32579258 PMCID: PMC7362101 DOI: 10.1111/1348-0421.12828] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/11/2020] [Accepted: 06/15/2020] [Indexed: 01/24/2023]
Abstract
In this study, the anti–severe acute respiratory syndrome coronavirus‐2 (anti‐SARS‐CoV‐2) activity of mycophenolic acid (MPA) and IMD‐0354 was analyzed. These compounds were chosen based on their antiviral activities against other coronaviruses. Because they also inhibit dengue virus (DENV) infection, other anti‐DENV compounds/drugs were also assessed. On SARS‐CoV‐2‐infected VeroE6/TMPRSS2 monolayers, both MPA and IMD‐0354, but not other anti‐DENV compounds/drugs, showed significant anti‐SARS‐CoV‐2 activity. Although MPA reduced the viral RNA level by only approximately 100‐fold, its half maximal effective concentration was as low as 0.87 µ
m, which is easily achievable at therapeutic doses of mycophenolate mofetil. MPA targets the coronaviral papain‐like protease and an in‐depth study on its mechanism of action would be useful in the development of novel anti‐SARS‐CoV‐2 drugs.
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Affiliation(s)
- Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shutoku Matsuyama
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Miyuki Kawase
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takayuki Hishiki
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health, Chigasaki, Kanagawa, Japan
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Diseases, Tokyo, Japan
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Shirato K, Nao N, Katano H, Takayama I, Saito S, Kato F, Katoh H, Sakata M, Nakatsu Y, Mori Y, Kageyama T, Matsuyama S, Takeda M. Development of Genetic Diagnostic Methods for Detection for Novel Coronavirus 2019(nCoV-2019) in Japan. Jpn J Infect Dis 2020. [PMID: 32074516 DOI: 10.7883/yoken.jjid.2020.061,pubmed:32074516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
During the emergence of novel coronavirus 2019 (nCoV) outbreak in Wuhan city, China at the end of 2019, there was movement of many airline travelers between Wuhan and Japan, suggesting that the Japanese population was at high risk of infection by the virus. Hence, we urgently developed diagnostic systems for detection of 2019 nCoV. Two nested RT-PCR and two real-time RT-PCR assays were adapted for use in Japan. As of February 8, 2020, these assays have successfully detected 25 positive cases of infection in Japan.
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Affiliation(s)
- Kazuya Shirato
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Naganori Nao
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Harutaka Katano
- Department of Pathology National Institute of Infectious Disease, Japan
| | - Ikuyo Takayama
- Influenza Virus Research Center, National Institute of Infectious Disease, Japan
| | - Shinji Saito
- Influenza Virus Research Center, National Institute of Infectious Disease, Japan
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Masafumi Sakata
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Yuichiro Nakatsu
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Yoshio Mori
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Tsutomu Kageyama
- Influenza Virus Research Center, National Institute of Infectious Disease, Japan
| | - Shutoku Matsuyama
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Disease, Japan
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20
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Shirato K, Nao N, Katano H, Takayama I, Saito S, Kato F, Katoh H, Sakata M, Nakatsu Y, Mori Y, Kageyama T, Matsuyama S, Takeda M. Development of Genetic Diagnostic Methods for Detection for Novel Coronavirus 2019(nCoV-2019) in Japan. Jpn J Infect Dis 2020; 73:304-307. [PMID: 32074516 DOI: 10.7883/yoken.jjid.2020.061] [Citation(s) in RCA: 305] [Impact Index Per Article: 76.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
During the emergence of novel coronavirus 2019 (nCoV) outbreak in Wuhan city, China at the end of 2019, there was movement of many airline travelers between Wuhan and Japan, suggesting that the Japanese population was at high risk of infection by the virus. Hence, we urgently developed diagnostic systems for detection of 2019 nCoV. Two nested RT-PCR and two real-time RT-PCR assays were adapted for use in Japan. As of February 8, 2020, these assays have successfully detected 25 positive cases of infection in Japan.
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Affiliation(s)
- Kazuya Shirato
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Naganori Nao
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Harutaka Katano
- Department of Pathology National Institute of Infectious Disease, Japan
| | - Ikuyo Takayama
- Influenza Virus Research Center, National Institute of Infectious Disease, Japan
| | - Shinji Saito
- Influenza Virus Research Center, National Institute of Infectious Disease, Japan
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Hiroshi Katoh
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Masafumi Sakata
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Yuichiro Nakatsu
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Yoshio Mori
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Tsutomu Kageyama
- Influenza Virus Research Center, National Institute of Infectious Disease, Japan
| | - Shutoku Matsuyama
- Department of Virology III, National Institute of Infectious Disease, Japan
| | - Makoto Takeda
- Department of Virology III, National Institute of Infectious Disease, Japan
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21
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Iozumi K, Abe M, Ito Y, Uesugi T, Onoduka T, Kato I, Kato F, Kodama K, Takahashi H, Takeda O, Tomizawa K, Nomiyama T, Fujii M, Mayama J, Muramoto F, Yasuda H, Yamanaka K, Sato T, Oh-I T, Kasai H, Tsuboi R, Hattori N, Maruyama R, Omi T, Shimoyama H, Sei Y, Nakasu I, Nishimoto S, Hata Y, Mochizuki T, Fukuzawa M, Seishima M, Sugiura K, Katayama I, Yamamoto O, Shindo M, Kiryu H, Kusuhara M, Takenaka M, Watanabe S. Efficacy of long-term treatment with efinaconazole 10% solution in patients with onychomycosis, including severe cases: A multicenter, single-arm study. J Dermatol 2019; 46:641-651. [PMID: 31206779 PMCID: PMC6771904 DOI: 10.1111/1346-8138.14935] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 05/01/2019] [Indexed: 11/28/2022]
Abstract
We evaluated the efficacy of efinaconazole 10% topical solution in long‐term use, for up to 72 weeks, for onychomycosis, including severe cases. Among 605 participants, 219 patients diagnosed as having onychomycosis were evaluated for the efficacy of efinaconazole. The treatment success rate (<10% clinical involvement of the target toenail) at the final assessment time point was 56.6%, the complete cure rate was 31.1% and the mycological cure rate was 61.6%, all of which increased over time, demonstrating that continuous application contributed to the improvement of cure rate. Even in severe cases, reduction of the affected nail area was observed, showing the potential efficacy of the treatment. Responses to a quality of life questionnaire among patients with onychomycosis, OnyCOE‐t, suggested that efinaconazole treatment improved the patients’ quality of life. The incidence of adverse drug reaction in the patients eligible for the assessment was 6.3%, and this developed only in the administration site in all cases. No systemic adverse event was observed. In addition, no increase in the incidence of adverse drug reaction due to long‐term use was found. Efinaconazole therapy was proved to exhibit excellent balance between efficacy and safety, and thus may serve as a useful treatment option for onychomycosis.
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Affiliation(s)
- Ken Iozumi
- Department of Dermatology, Tokyo Metropolitan Police Hospital, Tokyo, Japan
| | | | | | | | | | - Ichiro Kato
- Eniwa Station Dermatology Clinic, Hokkaido, Japan
| | | | | | | | - Osamu Takeda
- Takeda Dermatological Skin Care Clinic, Hokkaido, Japan
| | | | | | - Mizue Fujii
- Department of Dermatology, Asahikawa Medical University Hospital, Hokkaido, Japan
| | - Jun Mayama
- Chitose Dermatology and Plastic Surgery Clinic, Hokkaido, Japan
| | | | | | | | - Tomotaka Sato
- Department of Dermatology, Teikyo University Chiba Medical Center, Chiba, Japan.,Department of Dermatology, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | | | - Hiroko Kasai
- Department of Dermatology, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Ryoji Tsuboi
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | | | | | - Tokuya Omi
- Queen's Square Medical Center, Kanagawa, Japan
| | - Harunari Shimoyama
- Department of Dermatology, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan
| | - Yoshihiro Sei
- Department of Dermatology, Teikyo University Mizonokuchi Hospital, Kanagawa, Japan
| | | | - Shuhei Nishimoto
- Department of Dermatology, Saiseikai Kanagawa Hospital, Kanagawa, Japan
| | - Yasuki Hata
- Department of Dermatology, Saiseikai Kanagawa Hospital, Kanagawa, Japan.,Kanagawa Hata Dermatology Clinic, Kanagawa, Japan
| | - Takashi Mochizuki
- Department of Dermatology, Kanazawa Medical University, Ishikawa, Japan
| | - Masao Fukuzawa
- Department of Dermatology, Ina Central Hospital, Nagano, Japan
| | - Mariko Seishima
- Department of Dermatology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kazumitsu Sugiura
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan
| | | | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Tottori, Japan
| | - Masahisa Shindo
- Department of Dermatology, National Hospital Organization Hamada Medical Center, Shimane, Japan
| | | | | | - Motoi Takenaka
- Department of Dermatology, Nagasaki University Hospital, Nagasaki, Japan
| | - Shinichi Watanabe
- Department of Dermatology, Teikyo University School of Medicine, Tokyo, Japan
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22
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Kawai Y, Nakayama E, Takahashi K, Taniguchi S, Shibasaki KI, Kato F, Maeki T, Suzuki T, Tajima S, Saijo M, Lim CK. Increased growth ability and pathogenicity of American- and Pacific-subtype Zika virus (ZIKV) strains compared with a Southeast Asian-subtype ZIKV strain. PLoS Negl Trop Dis 2019; 13:e0007387. [PMID: 31170143 PMCID: PMC6553702 DOI: 10.1371/journal.pntd.0007387] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 04/12/2019] [Indexed: 01/01/2023] Open
Abstract
We investigated the growth properties and virulence in mice of three Zika virus (ZIKV) strains of Asian/American lineage, PRVABC59, ZIKV/Hu/Chiba/S36/2016 (ChibaS36), and ZIKV/Hu/NIID123/2016 (NIID123), belonging to the three distinct subtypes of this lineage. The American-subtype strain, PRVABC59, showed the highest growth potential in vitro, whereas the Southeast Asian-subtype strain, NIID123, showed the lowest proliferative capacity. Moreover, PRVABC59- and NIID123-infected mice showed the highest and lowest viremia levels and infectious virus levels in the testis, respectively, and the rate of damaged testis in PRVABC59-infected mice was higher than in mice infected with the other two strains. Lastly, ZIKV NS1 antigen was detected in the damaged testes of mice infected with PRVABC59 and the Pacific-subtype strain, ChibaS36, at 2 weeks post-inoculation and in the epididymides of PRVABC59-infected mice at 6 weeks post-inoculation. Our results indicate that PRVABC59 and ChibaS36 exhibit increased abilities to grow in vitro and in vivo and to induce testis damage in mice. Zika virus (ZIKV) is classified into two lineages, African and Asian/American. Phylogenetic analyses have revealed that Asian/American-lineage ZIKV strains can be divided into three distinct subtypes, the American, Pacific, and Southeast Asian subtypes, presenting several amino acid differences. In this study, we examined the in vitro and in vivo growth of three Asian/American lineage ZIKV strains belonging to the three subtypes. The American-subtype strain and the Southeast Asian-subtype strain exhibited the highest and lowest growth potential in vitro, respectively, and mice infected with these ZIKV strains also showed the highest and lowest viremia levels and infectious virus levels in the testis. Moreover, the rate and extent of testis damage were highest in mice infected with the American-subtype strain. Our results indicate that the American-subtype and Pacific-subtype strains exhibit increased ability to grow in vitro and in vivo and to induce testis damage in mice.
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Affiliation(s)
- Yasuhiro Kawai
- Division of Biosafety Control and Research, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
- Inflammation Biology Group, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Kenta Takahashi
- Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Ken-ichi Shibasaki
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Tadaki Suzuki
- Department of Pathology, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
- * E-mail:
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
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23
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Maeki T, Tajima S, Ikeda M, Kato F, Taniguchi S, Nakayama E, Takasaki T, Lim CK, Saijo M. Analysis of cross-reactivity between flaviviruses with sera of patients with Japanese encephalitis showed the importance of neutralization tests for the diagnosis of Japanese encephalitis. J Infect Chemother 2019; 25:786-790. [PMID: 31105002 DOI: 10.1016/j.jiac.2019.04.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/23/2019] [Accepted: 04/09/2019] [Indexed: 12/21/2022]
Abstract
Japanese encephalitis (JE) is one of the most important viral encephalitis in Asia. JE is caused by the Japanese encephalitis virus (JEV), which belongs to the genus Flavivirus, family Flaviviridae. The diagnosis of JE is usually based on serological assays, and it has been reported that cross-reactivity between flaviviruses has complicated the interpretations of results from serological assays. Therefore, analysis of the cross-reactivity is an important subject for serological diagnosis of JE and other diseases caused by flaviviruses. In the present study, the cross-reactivity of the sera of patients with JE to other flaviviruses was analyzed using enzyme-linked immunosorbent assay (ELISA) and neutralization tests. Sixteen serum samples were collected from patients with JE and were tested for: i) IgM antibody against West Nile virus (WNV), dengue virus (DENV), zika virus (ZIKV), and tick-borne encephalitis virus (TBEV) using IgM-ELISA, ii) IgG antibody against DENV and TBEV using IgG-ELISA, and iii) neutralization tests with DENV 1-4, ZIKV, TBEV, and WNV. Out of the 16 samples tested using ELISA, 11 and 14 samples were positive for IgM and IgG, respectively, against at least one of the other flaviviruses. In neutralization tests, neutralizing potency against DENV, ZIKV, or TBEV was not detected in any samples. Although 13 samples showed neutralizing potency against WNV, their neutralizing antibody titers were equal to or less than one-eighth of those against JEV. These results show that neutralization tests are more specific than ELISA, indicating the importance of the neutralization tests in the diagnosis of JE.
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Affiliation(s)
- Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan.
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Makiko Ikeda
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Satoshi Taniguchi
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Tomohiko Takasaki
- Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa 253-0087, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
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24
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Matsui T, Kinoshita N, Maeki T, Kutsuna S, Nakamura K, Nakamoto T, Ishikane M, Tajima S, Kato F, Taniguchi S, Lim CK, Saijo M, Ohmagari N. Dengue Virus Type 2 Infection in a Traveler Returning from Saudi Arabia to Japan. Jpn J Infect Dis 2019; 72:340-342. [PMID: 31061359 DOI: 10.7883/yoken.jjid.2018.537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In July 2018, a Japanese traveler returning from Saudi Arabia was diagnosed with dengue. The dengue virus type 2 gene was detected from a whole blood sample. Phylogenetic analysis revealed that the strain was clustered with isolates from Singapore and India. Travelers to Saudi Arabia should be cautious about mosquito bites.
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Affiliation(s)
- Toshihiro Matsui
- Department of Infectious Disease, National Center for Global Health and Medicine.,Division of Infectious Diseases, Department of Medical Specialties, National Center for Child Health and Development
| | - Noriko Kinoshita
- Department of Infectious Disease, National Center for Global Health and Medicine
| | - Takahiro Maeki
- Department of Virology 1, National Institute of Infectious Disease
| | - Satoshi Kutsuna
- Department of Infectious Disease, National Center for Global Health and Medicine
| | - Keiji Nakamura
- Department of Infectious Disease, National Center for Global Health and Medicine
| | - Takahito Nakamoto
- Department of Infectious Disease, National Center for Global Health and Medicine
| | - Masahiro Ishikane
- Department of Infectious Disease, National Center for Global Health and Medicine
| | - Shigeru Tajima
- Department of Virology 1, National Institute of Infectious Disease
| | - Fumihiro Kato
- Department of Virology 1, National Institute of Infectious Disease
| | | | - Chang-Kweng Lim
- Department of Virology 1, National Institute of Infectious Disease
| | - Masayuki Saijo
- Department of Virology 1, National Institute of Infectious Disease
| | - Norio Ohmagari
- Department of Infectious Disease, National Center for Global Health and Medicine
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25
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Okano Y, Saito-Tarashima N, Kurosawa M, Iwabu A, Ota M, Watanabe T, Kato F, Hishiki T, Fujimuro M, Minakawa N. Synthesis and biological evaluation of novel imidazole nucleosides as potential anti-dengue virus agents. Bioorg Med Chem 2019; 27:2181-2186. [PMID: 31003866 DOI: 10.1016/j.bmc.2019.04.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/06/2019] [Accepted: 04/07/2019] [Indexed: 10/27/2022]
Abstract
In this work, we developed imidazole nucleoside derivatives with anti-dengue virus (DENV) activity was examined. First, compounds in a nucleosides library were screened to find lead compounds which inhibit replication of DENV. As a result, 5-ethynyl-(1-β-d-ribofuranosyl)imidazole-4-carboxamide (1; EICAR) and its 4-carbonitrile derivative EICNR (2) were selected as promising antiviral compounds. However, both of them also exhibited cytotoxicity. In order to develop an effective and less toxic compound, 4'-thio and 4'-seleno derivatives of EICAR and EICNR 3-6 were prepared. The resulting 4'-thioEICAR and 4'-thioEICNR showed inhibitory effect on DENV replication without cytotoxicity as potent as ribavirin, a positive control.
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Affiliation(s)
- Yuki Okano
- Graduate School of Pharmaceutical Science, Tokushima University, Shomachi 1-78-1, Tokushima 770-8505, Japan
| | - Noriko Saito-Tarashima
- Graduate School of Pharmaceutical Science, Tokushima University, Shomachi 1-78-1, Tokushima 770-8505, Japan
| | - Madoka Kurosawa
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-shichono-cho 1, Kyoto 607-8412, Japan
| | - Ai Iwabu
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-shichono-cho 1, Kyoto 607-8412, Japan
| | - Masashi Ota
- Graduate School of Pharmaceutical Science, Tokushima University, Shomachi 1-78-1, Tokushima 770-8505, Japan
| | - Tadashi Watanabe
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-shichono-cho 1, Kyoto 607-8412, Japan
| | - Fumihiro Kato
- Department of Virology III, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | - Takayuki Hishiki
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa 253-0087, Japan
| | - Masahiro Fujimuro
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-shichono-cho 1, Kyoto 607-8412, Japan.
| | - Noriaki Minakawa
- Graduate School of Pharmaceutical Science, Tokushima University, Shomachi 1-78-1, Tokushima 770-8505, Japan.
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26
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Tohma D, Tajima S, Kato F, Sato H, Kakisaka M, Hishiki T, Kataoka M, Takeyama H, Lim CK, Aida Y, Saijo M. Correction to: An estrogen antagonist, cyclofenil, has anti-dengue-virus activity. Arch Virol 2018; 164:235. [PMID: 30474754 DOI: 10.1007/s00705-018-4107-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We would like to correct the information on the antibody used in this study. In Fig. 5 of the article, cellular β-actin was detected as an internal control using anti-β-actin antibody (Fujifilm Wako Pure Chemicals, #017-24573).
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Affiliation(s)
- Daiki Tohma
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsucho, Shinjuku, Tokyo, 162-8480, Japan
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan.
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Hirotaka Sato
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
- Virus Infectious Diseases Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Michinori Kakisaka
- Virus Infectious Diseases Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Takayuki Hishiki
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa, 253-0087, Japan
| | - Michiyo Kataoka
- Department of Pathology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Haruko Takeyama
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsucho, Shinjuku, Tokyo, 162-8480, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Yoko Aida
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
- Virus Infectious Diseases Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
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27
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Nguyen TTT, Tajima S, Ikeda M, Nguyen TT, Le TTH, Pham HTT, Pham DQ, Le MTQ, Maeki T, Taniguchi S, Kato F, Moi ML, Morita K, Lim CK, Saijo M, Hasebe F. Neutralization Potency of Sera from Vietnamese Patients with Japanese Encephalitis (JE) against Genotypes I and V JE Viruses. Jpn J Infect Dis 2018; 72:115-117. [PMID: 30381682 DOI: 10.7883/yoken.jjid.2018.232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Japanese encephalitis virus (JEV) is classified into 5 genotypes (GI, GII, GIII, GIV, and GV), and the GI and GIII strains are the most widely distributed in JE endemic areas. In recent years, GV JEV has been detected in China and Korea, suggesting that GV JEV may invade other JE endemic areas, including Vietnam, and that more attention should be paid to the JEV strains circulating in these areas. In this study, we investigated the neutralization ability of the sera collected from 22 Vietnamese patients with JE who lived in northern Vietnam against the GI and GV JEV strains. In most cases, the ratios of the titer against GV to that against GI (GV:GI) were equal to or less than 1:4. However, the titer against GV JEV was equivalent (1:1) to that against GI JEV in only a few cases, and no serum had a ratio higher than 1:1. Thus, our results did not show convincing evidence that GV JEV was emerging in northern Vietnam in 2014.
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Affiliation(s)
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases
| | - Makiko Ikeda
- Department of Virology I, National Institute of Infectious Diseases
| | - Thu Trang Nguyen
- Vietnam Research Station, National Institute of Hygiene and Epidemiology-Nagasaki University
| | - Thu Thi Hien Le
- Department of Virology, National Institute of Hygiene and Epidemiology
| | - Hang Thi Thu Pham
- Department of Virology, National Institute of Hygiene and Epidemiology
| | - Do Quyen Pham
- Department of Virology, National Institute of Hygiene and Epidemiology
| | - Mai Thi Quynh Le
- Department of Virology, National Institute of Hygiene and Epidemiology
| | - Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases
| | | | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases
| | - Meng Ling Moi
- Department of Virology, Institute of Tropical Medicine, Nagasaki University
| | - Koichi Morita
- Department of Virology, Institute of Tropical Medicine, Nagasaki University
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases
| | - Futoshi Hasebe
- Vietnam Research Station, National Institute of Hygiene and Epidemiology-Nagasaki University.,Vietnam Research Station, Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University
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Tohma D, Tajima S, Kato F, Sato H, Kakisaka M, Hishiki T, Kataoka M, Takeyama H, Lim CK, Aida Y, Saijo M. An estrogen antagonist, cyclofenil, has anti-dengue-virus activity. Arch Virol 2018; 164:225-234. [PMID: 30357482 DOI: 10.1007/s00705-018-4079-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 10/03/2018] [Indexed: 11/27/2022]
Abstract
Dengue virus (DENV) infections are a major cause of morbidity and mortality in tropical and subtropical areas. Several compounds that act against DENV have been studied in clinical trials to date; however, there have been no compounds identified that are effective in reducing the severity of the clinical manifestations. To explore anti-DENV drugs, we examined small molecules that interact with DENV NS1 and inhibit DENV replication. Cyclofenil, which is a selective estrogen receptor modulator (SERM) and has been used clinically as an ovulation-inducing drug, showed an inhibitory effect on DENV replication in mammalian cells but not in mosquito cells. Other SERMs also inhibited DENV replication in mammalian cells, but cyclofenil showed the weakest cytotoxicity among these SERMs. Cyclofenil also inhibited the replication of Zika virus. A time-of-addition assay suggested that cyclofenil may interfere with two stages of the DENV life cycle: the translation-RNA synthesis and assembly-maturation stages. However, the level of intracellular infectious particles decreased more drastically after treatment with cyclofenil than the viral RNA level did, indicating that the assembly-maturation stage might be the main target of cyclofenil. In electron microscopy analysis, many aggregated particles were detected in DENV-infected cells in the presence of cyclofenil, supporting the possibility that cyclofenil impedes the process of assembly and maturation of DENV.
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Affiliation(s)
- Daiki Tohma
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsucho, Shinjuku, Tokyo, 162-8480, Japan
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan.
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Hirotaka Sato
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
- Virus Infectious Diseases Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Michinori Kakisaka
- Virus Infectious Diseases Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Takayuki Hishiki
- Department of Microbiology, Kanagawa Prefectural Institute of Public Health, 1-3-1 Shimomachiya, Chigasaki, Kanagawa, 253-0087, Japan
| | - Michiyo Kataoka
- Department of Pathology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Haruko Takeyama
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsucho, Shinjuku, Tokyo, 162-8480, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
| | - Yoko Aida
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
- Virus Infectious Diseases Unit, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo, 162-8640, Japan
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Fujita R, Kato F, Kobayashi D, Murota K, Takasaki T, Tajima S, Lim CK, Saijo M, Isawa H, Sawabe K. Persistent viruses in mosquito cultured cell line suppress multiplication of flaviviruses. Heliyon 2018; 4:e00736. [PMID: 30167494 PMCID: PMC6107885 DOI: 10.1016/j.heliyon.2018.e00736] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/25/2018] [Accepted: 08/08/2018] [Indexed: 11/16/2022] Open
Abstract
In the growth kinetics analysis of flaviviruses in Aedes albopictus C6/36 cell lines obtained from the Japanese Collection of Research Bioresources (JCRB) Cell Bank and the European Collection of Authenticated Cell Culture (ECACC), these two cells line showed different viral susceptibility for Zika virus (ZIKV), Dengue virus (DENV), and Japanese encephalitis virus (JEV). Next-generation sequencing (NGS) analysis revealed that the C6/36 JCRB strain was persistently infected with two viruses without showing any cytopathic effects. The complete sequence analysis demonstrated that the one virus was Menghai rhabdovirus (MERV), which has been found from Aedes albopictus mosquito. The other virus was a novel virus, designated as Shinobi tetravirus (SHTV). Interestingly, the viral susceptibility of these two strains was almost even for Sindbis virus and Getah virus. We cloned SHTV and MERV from JCRB C6/36 cell line and then re-infected them into another C6/36 cell line, resulting in the reproduction of persistent infection with each virus. ZIKV growth was suppressed in SHTV and/or MERV re-infected C6/36 cells also. To our knowledge, this is the first demonstration that persistent infection with rhabdovirus and/or permutotetravirus suppressed flavivirus replication in mosquito cells.
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Affiliation(s)
- Ryosuke Fujita
- Department of Medical Entomology, National Institute of Infectious Diseases, Tokyo, Japan
- Isotope Imaging Laboratory, Creative Research Institution, Hokkaido University, Sapporo, Japan
- Department of Research Promotion, Japan Agency for Medical Research and Development, Tokyo, Japan
| | - Fumihiro Kato
- Department of Research Promotion, Japan Agency for Medical Research and Development, Tokyo, Japan
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Daisuke Kobayashi
- Department of Medical Entomology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Katsunori Murota
- Department of Medical Entomology, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Research Promotion, Japan Agency for Medical Research and Development, Tokyo, Japan
| | - Tomohiko Takasaki
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Haruhiko Isawa
- Department of Medical Entomology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kyoko Sawabe
- Department of Medical Entomology, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan
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Maeki T, Tajima S, Kyaw AK, Matsumoto F, Miura K, Yamashita A, Yoshikawa A, Negishi K, Noguchi Y, Tadokoro K, Abe K, Taruya J, Koh J, Ito H, Ikegaya A, Abe F, Wada M, Nishigata T, Ikeda M, Kato F, Taniguchi S, Nakayama E, Takasaki T, Morita K, Lim CK, Saijo M. Comparison of Neutralizing Antibody Titers against Japanese Encephalitis Virus Genotype V Strain with Those against Genotype I and III Strains in the Sera of Japanese Encephalitis Patients in Japan in 2016. Jpn J Infect Dis 2018; 71:360-364. [PMID: 29962489 DOI: 10.7883/yoken.jjid.2018.126] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Japanese encephalitis (JE) is an acute viral disease caused by the Japanese encephalitis virus (JEV). JEV strains are classified into 5 genotypes (I-V). JEV genotype V strains have never been detected in Japan to date, but they were recently detected in South Korea. In the present analysis, we tried to determine if a JEV genotype V strain caused any JE case in Japan in 2016. Serum and cerebrospinal fluid samples were collected from 10 JE patients reported in Japan in 2016. JEV RNA was not detected in any of the samples. Although JEV is a single-serotype virus, it can be expected that the neutralizing antibody titers against JEV genotype V strains are higher than those against genotype I and III strains in the serum of patients with JE in Japan whose causative JEV was the genotype V strain. The neutralizing antibody titers against the JEV genotype V strain were not higher than those against the genotype I or III strain in any serum samples. Therefore, the evidence that the JEV genotype V strain caused any JE case in Japan in 2016 was absent.
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Affiliation(s)
- Takahiro Maeki
- Department of Virology I, National Institute of Infectious Diseases
| | - Shigeru Tajima
- Department of Virology I, National Institute of Infectious Diseases
| | | | | | - Kana Miura
- Nagasaki Prefectural Institute of Environment and Public Health
| | - Ayaka Yamashita
- Nagasaki Prefectural Institute of Environment and Public Health
| | - Akira Yoshikawa
- Nagasaki Prefectural Institute of Environment and Public Health
| | | | | | - Koh Tadokoro
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Koji Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | | | | | | | | | - Fuyuki Abe
- Shizuoka Institute of Environment and Hygiene
| | - Mieko Wada
- Shimane Prefectural Institute of Public Health and Environmental Science
| | | | - Makiko Ikeda
- Department of Virology I, National Institute of Infectious Diseases
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases
| | | | - Eri Nakayama
- Department of Virology I, National Institute of Infectious Diseases
| | | | | | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases
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31
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Ueda Y, Gu W, Dansako H, Kim HS, Yoshizaki S, Okumura N, Ishikawa T, Nishitsuji H, Kato F, Hishiki T, Satoh S, Ishii K, Masuda M, Shimotohno K, Ikeda M, Kato N. Multiple antiviral activities of the antimalarial and anti-hepatitis C drug candidates N-89 and N-251. Biochem Biophys Rep 2018; 15:1-6. [PMID: 30023438 PMCID: PMC6047365 DOI: 10.1016/j.bbrep.2018.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 04/04/2018] [Accepted: 05/25/2018] [Indexed: 12/19/2022] Open
Abstract
The chemically synthesized endoperoxide compound N-89 and its derivative N-251 were shown to have potent antimalarial activity. We previously demonstrated that N-89 and N-251 potently inhibited the RNA replication of hepatitis C virus (HCV), which belongs to the Flaviviridae family. Since antimalarial and anti-HCV mechanisms have not been clarified, we were interested whether N-89 and N-251 possessed the activity against viruses other than HCV. In this study, we examined the effects of N-89 and N-251 on other flaviviruses (dengue virus and Japanese encephalitis virus) and hepatitis viruses (hepatitis B virus and hepatitis E virus). Our findings revealed that N-89 and N-251 moderately inhibited the RNA replication of Japanese encephalitis virus and hepatitis E virus, although we could not detect those anti-dengue virus activities. We also observed that N-89 and N-251 moderately inhibited the replication of hepatitis B virus at the step after viral translation. These results suggest the possibility that N-89 and N-251 act on some common host factor(s) that are necessary for viral replications, rather than the possibility that N-89 and N-251 directly act on the viral proteins except for HCV. We describe a new type of antiviral reagents, N-89 and N-251, which are applicable to multiple different viruses.
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Affiliation(s)
- Youki Ueda
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan
| | - Weilin Gu
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan
| | - Hiromichi Dansako
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan
| | - Hye-Sook Kim
- Division of International Infectious Diseases Control, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 1-1-1 Tsushimanaka, Okayama 700-8530, Japan
| | - Sayaka Yoshizaki
- Department of Virology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashi-murayama, Tokyo 208-0011, Japan
| | - Nobuaki Okumura
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan
| | - Tomohiro Ishikawa
- Department of Microbiology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu-machi, Shimotsuga-gun, Tochigi 321-0293, Japan
| | - Hironori Nishitsuji
- Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1 Kohnodai, Ichikawa, Chiba 272-8575, Japan
| | - Fumihiro Kato
- Department of Virology I, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Takayuki Hishiki
- Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 150-8506, Japan
| | - Shinya Satoh
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan
| | - Koji Ishii
- Department of Virology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashi-murayama, Tokyo 208-0011, Japan
| | - Michiaki Masuda
- Department of Microbiology, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu-machi, Shimotsuga-gun, Tochigi 321-0293, Japan
| | - Kunitada Shimotohno
- Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, 1-7-1 Kohnodai, Ichikawa, Chiba 272-8575, Japan
| | - Masanori Ikeda
- Department of Persistent and Oncogenic Viruses, Center for Chronic Viral Disease, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Nobuyuki Kato
- Department of Tumor Virology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan
- Corresponding author.
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Tsuboi M, Kutsuna S, Maeki T, Taniguchi S, Tajima S, Kato F, Lim CK, Saijo M, Takaya S, Katanami Y, Kato Y, Ohmagari N. Dengue Virus Type 2 in Travelers Returning to Japan from Sri Lanka, 2017. Emerg Infect Dis 2018; 23. [PMID: 28840821 PMCID: PMC5652411 DOI: 10.3201/eid2311.171293] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
In June 2017, dengue virus type 2 infection was diagnosed in 2 travelers returned to Japan from Sri Lanka, where the country’s largest dengue fever outbreak is ongoing. Travelers, especially those previously affected by dengue fever, should take measures to avoid mosquito bites.
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Kato F, Ishida Y, Kawakami A, Takasaki T, Saijo M, Miura T, Hishiki T. Evaluation of Macaca radiata as a non-human primate model of Dengue virus infection. Sci Rep 2018; 8:3421. [PMID: 29467430 PMCID: PMC5821881 DOI: 10.1038/s41598-018-21582-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/07/2018] [Indexed: 01/07/2023] Open
Abstract
Dengue virus (DENV) causes a wide range of illnesses in humans, including dengue fever and dengue haemorrhagic fever. Current animal models of DENV infection are limited for understanding infectious diseases in humans. Bonnet monkeys (Macaca radiata), a type of Old World monkey, have been used to study experimental and natural infections by flaviviruses, but Old World monkeys have not yet been used as DENV infection models. In this study, the replication levels of several DENV strains were evaluated using peripheral blood mononuclear cells. Our findings indicated that DENV-4 09-48 strain, isolated from a traveller returning from India in 2009, was a highly replicative virus. Three bonnet monkeys were infected with 09-48 strain and antibody responses were assessed. DENV nonstructural protein 1 antigen was detected and high viraemia was observed. These results indicated that bonnet monkeys and 09-48 strain could be used as a reliable primate model for the study of DENV.
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Affiliation(s)
- Fumihiro Kato
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.,Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuki Ishida
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Akihiko Kawakami
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Tomohiko Takasaki
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan.,Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan
| | - Masayuki Saijo
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tomoyuki Miura
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takayuki Hishiki
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan. .,Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
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Suzuki T, Kutsuna S, Taniguchi S, Tajima S, Maeki T, Kato F, Lim CK, Saijo M, Tsuboi M, Yamamoto K, Morioka S, Ishikane M, Hayakawa K, Kato Y, Ohmagari N. Dengue Virus Exported from Côte d'Ivoire to Japan, June 2017. Emerg Infect Dis 2017; 23. [PMID: 28748782 PMCID: PMC5621529 DOI: 10.3201/eid2310.171132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Since April 2017, a dengue fever outbreak has been ongoing in Côte d’Ivoire. We diagnosed dengue fever (type 2 virus) in a traveler returning to Japan from Côte d’Ivoire. Phylogenetic analysis revealed strain homology with the Burkina Faso 2016 strain. This case may serve as an alert to possible disease spread outside Africa.
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Hishiki T, Kato F, Tajima S, Toume K, Umezaki M, Takasaki T, Miura T. Hirsutine, an Indole Alkaloid of Uncaria rhynchophylla, Inhibits Late Step in Dengue Virus Lifecycle. Front Microbiol 2017; 8:1674. [PMID: 28912773 PMCID: PMC5582420 DOI: 10.3389/fmicb.2017.01674] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 08/17/2017] [Indexed: 11/26/2022] Open
Abstract
Dengue virus (DENV) is transmitted to humans by Aedes mosquitoes and is a public health issue worldwide. No antiviral drugs specific for treating dengue infection are currently available. To identify novel DENV inhibitors, we analyzed a library of 95 compounds and 120 extracts derived from crude drugs (herbal medicines). In the primary screening, A549 cells infected with DENV-1 were cultured in the presence of each compound and extract at a final concentration of 10 μM (compound) and 100 μg/mL (extract), and reduction of viral focus formation was assessed. Next, we eliminated compounds and extracts which were cytotoxic using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Hirsutine, an indole alkaloid of Uncaria rhynchophylla, was identified as a potent anti-DENV compound exhibiting high efficacy and low cytotoxicity. Hirsutine showed antiviral activity against all DENV serotypes. Time-of-drug-addition and time-of-drug-elimination assays indicated that hirsutine inhibits the viral particle assembly, budding, or release step but not the viral translation and replication steps in the DENV lifecycle. A subgenomic replicon system was used to confirm that hirsutine does not restrict viral genome RNA replication. Hirsutine is a novel DENV inhibitor and potential candidate for treating dengue fever.
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Affiliation(s)
- Takayuki Hishiki
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto UniversityKyoto, Japan
| | - Fumihiro Kato
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto UniversityKyoto, Japan
| | - Shigeru Tajima
- Department of Virology 1, National Institute of Infectious DiseasesTokyo, Japan
| | - Kazufumi Toume
- Division of Pharmacognosy, Institute of Natural Medicine, University of ToyamaToyama, Japan
| | - Masahito Umezaki
- Division of Chemo-Bioinformatics, Institute of Natural Medicine, University of ToyamaToyama, Japan
| | | | - Tomoyuki Miura
- Laboratory of Primate Model, Institute for Frontier Life and Medical Sciences, Kyoto UniversityKyoto, Japan
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Kato F, Ishida Y, Oishi S, Fujii N, Watanabe S, Vasudevan SG, Tajima S, Takasaki T, Suzuki Y, Ichiyama K, Yamamoto N, Yoshii K, Takashima I, Kobayashi T, Miura T, Igarashi T, Hishiki T. Novel antiviral activity of bromocriptine against dengue virus replication. Antiviral Res 2016; 131:141-7. [PMID: 27181378 DOI: 10.1016/j.antiviral.2016.04.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 04/25/2016] [Accepted: 04/28/2016] [Indexed: 11/28/2022]
Abstract
Dengue virus (DENV) infectious disease is a major public health problem worldwide; however, licensed vaccines or specific antiviral drugs against this infection are not available. To identify novel anti-DENV compounds, we screened 1280 pharmacologically active compounds using focus reduction assay. Bromocriptine (BRC) was found to have potent anti-DENV activity and low cytotoxicity (half maximal effective concentration [EC50], 0.8-1.6 μM; and half maximal cytotoxicity concentration [CC50], 53.6 μM). Time-of-drug-addition and time-of-drug-elimination assays suggested that BRC inhibits translation and/or replication steps in the DENV life cycle. A subgenomic replicon system was used to verify that BRC restricts RNA replication step. Furthermore, a single amino acid substitution (N374H) was detected in the NS3 protein that conferred resistance to BRC. In summary, BRC was found to be a novel DENV inhibitor and a potential candidate for the treatment of DENV infectious disease.
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Affiliation(s)
- Fumihiro Kato
- Laboratory of Primate Model, Institute for Virus Research, Kyoto University, Kyoto, Japan; Department of Virology 1, National Institute of Infectious Diseases, Japan
| | - Yuki Ishida
- Laboratory of Primate Model, Institute for Virus Research, Kyoto University, Kyoto, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Nobutaka Fujii
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Satoru Watanabe
- Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore
| | - Subhash G Vasudevan
- Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore
| | - Shigeru Tajima
- Department of Virology 1, National Institute of Infectious Diseases, Japan
| | - Tomohiko Takasaki
- Department of Virology 1, National Institute of Infectious Diseases, Japan
| | - Youichi Suzuki
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Koji Ichiyama
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Naoki Yamamoto
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Kentaro Yoshii
- Laboratry of Public Health, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Ikuo Takashima
- Laboratry of Public Health, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Takeshi Kobayashi
- Laboratory of Primate Model, Institute for Virus Research, Kyoto University, Kyoto, Japan
| | - Tomoyuki Miura
- Laboratory of Primate Model, Institute for Virus Research, Kyoto University, Kyoto, Japan
| | - Tatsuhiko Igarashi
- Laboratory of Primate Model, Institute for Virus Research, Kyoto University, Kyoto, Japan
| | - Takayuki Hishiki
- Laboratory of Primate Model, Institute for Virus Research, Kyoto University, Kyoto, Japan; Viral Infectious Diseases Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
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Ishida Y, Yoneda M, Otsuki H, Watanabe Y, Kato F, Matsuura K, Kikukawa M, Matsushita S, Hishiki T, Igarashi T, Miura T. Generation of a neutralization-resistant CCR5 tropic simian/human immunodeficiency virus (SHIV-MK38) molecular clone, a derivative of SHIV-89.6. J Gen Virol 2016; 97:1249-1260. [PMID: 26850058 DOI: 10.1099/jgv.0.000421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Previously, we reported that a new genetically diverse CCR5 (R5) tropic simian/human immunodeficiency virus (SHIV-MK38) adapted to rhesus monkeys became more neutralization resistant to SHIV-infected plasma than did the parental SHIV-KS661 clone. Here, to clarify the significance of the neutralization-resistant phenotype of SHIV in a macaque model, we initially investigated the precise neutralization phenotype of the SHIVs, including SHIV-MK38 molecular clones, using SHIV-MK38-infected plasma, a pooled plasma of human immunodeficiency virus (HIV)-infected individuals, soluble CD4 and anti-HIV-1 neutralizing mAbs, the epitopes of which were known. The results show that SHIV-KS661 had tier 1 neutralization sensitivity, but monkey-adapted R5 tropic SHIV-MK38 acquired neutralization resistance similar to that of tier 2 or 3 as a clone virus. Sequence analysis of the env gene suggested that the neutralization-resistant phenotype of SHIV-MK38 was acquired by conformational changes in Env associated with the net charge and potential N-linked glycosylation sites. To examine the relationship between neutralization phenotype and stably persistent infection in monkeys, we performed in vivo rectal inoculation experiments using a SHIV-MK38 molecular clone. The results showed that one of three rhesus monkeys exhibited durable infection with a plasma viral load of 105 copies ml- 1 despite the high antibody responses that occurred in the host. Whilst further improvements are required in the development of a challenge virus, it will be useful to generate a neutralization-resistant R5 tropic molecular clone of the SHIV-89.6 lineage commonly used for vaccine development - a result that can be used to explore the foundation of AIDS pathogenesis.
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Affiliation(s)
- Yuki Ishida
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Mai Yoneda
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Hiroyuki Otsuki
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Yuji Watanabe
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Fumihiro Kato
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Kanako Matsuura
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Minako Kikukawa
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Shuzo Matsushita
- Division of Clinical Retrovirology and Infectious Diseases, Center for AIDS Research,Kumamoto University, Kumamoto 860-0811,Japan
| | - Takayuki Hishiki
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Tatsuhiko Igarashi
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
| | - Tomoyuki Miura
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research,Kyoto University, 53 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507,Japan
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Takeda K, Yamaguchi Y, Hino M, Kato F. Potentiation of Acetylcholine-Mediated Facilitation of Inhibitory Synaptic Transmission by an Azaindolizione Derivative, ZSET1446 (ST101), in the Rat Hippocampus. ACTA ACUST UNITED AC 2015; 356:445-55. [DOI: 10.1124/jpet.115.229021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/16/2015] [Indexed: 11/22/2022]
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Nishida N, Yang X, Takasaki I, Imai K, Kato K, Inoue Y, Imamura T, Miyashita R, Kato F, Yamaide A, Mori M, Saito S, Hara J, Adachi Y, Miyawaki T, Kanegane H. Dysgammaglobulinemia Associated With Glu349del, a Hypomorphic XIAP Mutation. J Investig Allergol Clin Immunol 2015; 25:205-213. [PMID: 26182687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND X-linked lymphoproliferative syndrome type 2 is a rare hereditary immunodeficiency caused by mutations in the XIAP gene. This immunodeficiency frequently results in hemophagocytic lymphohistiocytosis, although hypogammaglobulinemia and dysgammaglobulinemia are also common. OBJECTIVE We identified 17 patients from 12 Japanese families with mutations in XIAP. The Glu349del mutation was observed in 3 patients, each from a different family. Interestingly, these patients exhibited dysgammaglobulinemia but not hemophagocytic lymphohistiocytosis. We conducted an immunological study of patients carrying Glu349del and other mutations to elucidate the pathogenic mechanisms of dysgammaglobulinemia in patients with mutations in the XIAP gene. PATIENTS AND METHODS We performed an immunological study of 2 patients carrying the Glu349del mutation and 8 patients with other mutations. RESULTS Flow cytometry showed that the percentage of memory B cells in patients with a mutation in XIAP was lower than that observed in the healthy controls. The patients with the Glu349del mutation had a lower percentage of memory B cells than those with other mutations. Ig production was reduced in patients with the Glu349del mutation. Increased susceptibility to apoptosis was observed in the patients with other mutations. Susceptibility to apoptosis was normal in patients with Glu349del. Microarray analysis indicated that expression of Ig-related genes was reduced in patients with the Glu349del mutation and that the pattern was different from that observed in the healthy controls or patients with other mutations in XIAP. CONCLUSIONS Patients carrying the Glu349del mutation in the XIAP gene may have a clinically and immunologically distinct phenotype from patients with other XIAP mutations. The Glu349del mutation may be associated with dysgammaglobulinemia.
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Toishi Y, Tsunoda N, Tagami M, Hashimoto H, Kato F, Suzuki T, Nagaoka K, Watanabe G, Tokuyama S, Okuda K, Taya K. Evaluation of the new rapid assay PATHFAST for measuring progesterone in whole blood and serum of mares. J Equine Vet Sci 2014. [DOI: 10.1016/j.jevs.2013.10.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kato F, Kobayashi T, Tajima S, Takasaki T, Miura T, Igarashi T, Hishiki T. Development of a Novel Dengue-1 Virus Replicon System Expressing Secretory Gaussia luciferase for Analysis of Viral Replication and Discovery of Antiviral Drugs. Jpn J Infect Dis 2014; 67:209-12. [DOI: 10.7883/yoken.67.209] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Fumihiro Kato
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University
| | - Takeshi Kobayashi
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University
| | - Shigeru Tajima
- Department of Virology 1, National Institute of Infectious Diseases
| | | | - Tomoyuki Miura
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University
| | - Tatsuhiko Igarashi
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University
| | - Takayuki Hishiki
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University
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Kato F, Matsuo N, Fujikawa S. 089 Inhibitory effects on low temperature injury by flavonoids (glycosides). Cryobiology 2013. [DOI: 10.1016/j.cryobiol.2013.09.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kato F, Ishida Y, Kawagishi T, Kobayashi T, Hishiki T, Miura T, Igarashi T. Natural infection of cynomolgus monkeys with dengue virus occurs in epidemic cycles in the Philippines. J Gen Virol 2013; 94:2202-2207. [PMID: 23851439 DOI: 10.1099/vir.0.055343-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
To investigate the potential role of non-human primates (NHPs) in a dengue virus (DENV) epidemic, we conducted serological and genomic studies using plasma samples collected from 100 cynomolgus monkeys (Macaca fascicularis) in an animal breeding facility in the Philippines. An ELISA revealed 21 monkeys with a positive IgM reaction and 19 positive for IgG. Five of the monkeys were positive for both IgM and IgG. Of the 21 IgM-positive samples, a neutralization assay identified seven containing DENV-specific antibodies. We amplified the viral non-structural 1 (NS1) gene in two and the envelope (E) gene in one of these seven samples by RT-PCR. Phylogenetic analyses revealed that these DENV genes belonged to the epidemic DENV-2 family, not the sylvatic DENV family. These results suggest that NHPs may serve as a reservoir of epidemic DENV; therefore, the ecology of the urban DENV infection cycle should be investigated in these animals in detail.
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Affiliation(s)
- Fumihiro Kato
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Yuki Ishida
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Takahiro Kawagishi
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Takeshi Kobayashi
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Takayuki Hishiki
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Tomoyuki Miura
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Tatsuhiko Igarashi
- Laboratory of Primate Model, Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
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Nakamura SN, Matsumura A, Okayasu Y, Seva T, Rodriguez VM, Baturin P, Yuan L, Acha A, Ahmidouch A, Androic D, Asaturyan A, Asaturyan R, Baker OK, Benmokhtar F, Bosted P, Carlini R, Chen C, Christy M, Cole L, Danagoulian S, Daniel A, Dharmawardane V, Egiyan K, Elaasar M, Ent R, Fenker H, Fujii Y, Furic M, Gan L, Gaskell D, Gasparian A, Gibson EF, Gogami T, Gueye P, Han Y, Hashimoto O, Hiyama E, Honda D, Horn T, Hu B, Hungerford EV, Jayalath C, Jones M, Johnston K, Kalantarians N, Kanda H, Kaneta M, Kato F, Kato S, Kawama D, Keppel C, Lan KJ, Luo W, Mack D, Maeda K, Malace S, Margaryan A, Marikyan G, Markowitz P, Maruta T, Maruyama N, Miyoshi T, Mkrtchyan A, Mkrtchyan H, Nagao S, Navasardyan T, Niculescu G, Niculescu MI, Nomura H, Nonaka K, Ohtani A, Oyamada M, Perez N, Petkovic T, Randeniya S, Reinhold J, Roche J, Sato Y, Segbefia EK, Simicevic N, Smith G, Song Y, Sumihama M, Tadevosyan V, Takahashi T, Tang L, Tsukada K, Tvaskis V, Vulcan W, Wells S, Wood SA, Yan C, Zhamkochyan S. Observation of the (Λ)(7)He hypernucleus by the (e, e'K+) reaction. Phys Rev Lett 2013; 110:012502. [PMID: 23383783 DOI: 10.1103/physrevlett.110.012502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Indexed: 06/01/2023]
Abstract
An experiment with a newly developed high-resolution kaon spectrometer and a scattered electron spectrometer with a novel configuration was performed in Hall C at Jefferson Lab. The ground state of a neutron-rich hypernucleus, (Λ)(7)He, was observed for the first time with the (e, e'K+) reaction with an energy resolution of ~0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The (Λ)(7)He binding energy supplies the last missing information of the A = 7, T = 1 hypernuclear isotriplet, providing a new input for the charge symmetry breaking effect of the ΛN potential.
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Affiliation(s)
- S N Nakamura
- Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
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Kato F, Kotaki A, Yamaguchi Y, Shiba H, Hosono K, Harada S, Saijo M, Kurane I, Takasaki T, Tajima S. Identification and characterization of the short variable region of the Japanese encephalitis virus 3' NTR. Virus Genes 2011; 44:191-7. [PMID: 22057659 DOI: 10.1007/s11262-011-0685-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Accepted: 10/24/2011] [Indexed: 11/25/2022]
Abstract
Since the 1980s, the Japanese encephalitis virus (JEV) variants with slightly short variable regions (VR) of the 3' non-translated region (NTR) have been found; however, the implications of these short VR remain unclear. We recently identified two novel types of short VR (5 and 9 nt shorter than that of major group of genotype I JEV strains) of genotype I JEV isolates. To elucidate the impact of these short VR on the replication and virulence of JEV, we generated five recombinant JEV viruses: M41-d5 and M41-d9 have deletions in the VR that correspond to those observed in some recent JEV isolates, M41-d5d9 has both the 5- and 9-nt deletions in the VR, M41-d27 has a large deletion that encompasses both the 5- and 9-nt deletion regions, and M41-a13 has a 13-nt sequence insertion of the genotype III JEV strain Beijing-1 into the parent genotype I JEV strain Mie/41/2002 genome. The recombinant viruses and the parent virus, except for the M41-d27 mutant, showed similar growth properties in mammalian and mosquito cell lines. Mouse challenge experiments indicated that no significant differences among the recombinant viruses M41-d5d9, M41-d27, M41-a13, and the parent virus. Our results suggest that the short VR in JEV 3' NTR do not affect its growth in vitro or its pathogenicity in mice.
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Affiliation(s)
- Fumihiro Kato
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
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Yamaguchi Y, Nukui Y, Tajima S, Nerome R, Kato F, Watanabe H, Takasaki T, Kurane I. An amino acid substitution (V3I) in the Japanese encephalitis virus NS4A protein increases its virulence in mice, but not its growth rate in vitro. J Gen Virol 2011; 92:1601-1606. [DOI: 10.1099/vir.0.031237-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Our previous studies have shown that the Japanese encephalitis virus (JEV) strain Mie/40/2004 is the most virulent of the strains isolated by us in Japan from 2002 to 2004. Comparison of the amino acid sequence of Mie/40/2004 with those of low-virulence strains revealed that an isoleucine residue at position 3 of the Mie/40/2004 NS4A protein may increase viral pathogenicity. A recombinant virus with a single valine-to-isoleucine substitution (V3I) at position 3 in the low-virulence Mie/41/2002 background (rJEV-Mie41-NS4AV3I) exhibited increased virulence in mice compared with the Mie/41/2002 parent strain. The V3I mutation did not affect virus growth in several cell lines. These results demonstrate that the isoleucine at position 3 in the NS4A protein of Mie/40/2004 is responsible for its high virulence in vivo. This is the first report to show that an amino acid substitution in a flavivirus NS4A protein alters viral pathogenicity in mice.
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Affiliation(s)
- Yukie Yamaguchi
- Department of Pathology, Immunology and Microbiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Yoko Nukui
- Department of Infection Control and Prevention, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo, Tokyo 113-8655, Japan
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Shigeru Tajima
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Reiko Nerome
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Fumihiro Kato
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Haruo Watanabe
- Department of Pathology, Immunology and Microbiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Tomohiko Takasaki
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
| | - Ichiro Kurane
- Department of Virology 1, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku, Tokyo 162-8640, Japan
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Mizumachi E, Kato F, Hisatsune J, Tsuruda K, Uehara Y, Seo H, Sugai M. Clonal distribution of enterotoxigenic Staphylococcus aureus on handles of handheld shopping baskets in supermarkets. J Appl Microbiol 2010; 110:562-7. [PMID: 21155955 DOI: 10.1111/j.1365-2672.2010.04910.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS Shopping carts and handheld shopping baskets in supermarkets are subject to accidental bacterial contamination through contacts with a variety of food. We investigated the prevalence of Staphylococcus aureus on the handles of handheld shopping baskets in four supermarkets distantly located in Osaka district, Japan. METHODS AND RESULTS Fifty two strains of Staph. aureus were isolated from 760 basket handles. Among these, six strains were positive for staphylococcal enterotoxin B (SEB) production, representing 12% of total. This SEB producer ratio is considerably higher than among Staph. aureus isolated from nasal swabs of the supermarket workers (2%) and from independently collected clinical specimens (4%). These SEB-producing Staph. aureus strains from the basket handles are clonal and belong to ST12. Coagulase typing showed that they are in group VII, which is the most common cause of food poisoning in Japan. Biofilm assays indicated that SEB gene (seb)-positive strains including this clone produced a significantly higher amount of biofilm than seb-negative strains. CONCLUSIONS The frequent isolation of seb-positive Staph. aureus on shopping basket handles raises the possibility that they could be a hidden reservoir for Staph. aureus with a potential to cause food poisoning and draws attention to the importance of shopping basket sanitation.
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Affiliation(s)
- E Mizumachi
- Department of Bacteriology, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
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Machino M, Yukawa Y, Ito K, Nakashima H, Kato F. Posterior/anterior combined surgery for thoracolumbar burst fractures—posterior instrumentation with pedicle screws and laminar hooks, anterior decompression and strut grafting. Spinal Cord 2010; 49:573-9. [DOI: 10.1038/sc.2010.159] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kamishima T, Kitamura N, Amemiya M, Ishizaka K, Kato F, Yasuda K, Shirato H, Terae S. Experimental MR imaging of zirconia ceramic joint implants at 1.5 and 3 T. Clin Radiol 2010; 65:387-90. [DOI: 10.1016/j.crad.2009.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Revised: 12/04/2009] [Accepted: 12/07/2009] [Indexed: 11/29/2022]
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Tajima S, Nerome R, Nukui Y, Kato F, Takasaki T, Kurane I. A single mutation in the Japanese encephalitis virus E protein (S123R) increases its growth rate in mouse neuroblastoma cells and its pathogenicity in mice. Virology 2010; 396:298-304. [DOI: 10.1016/j.virol.2009.10.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 10/13/2009] [Accepted: 10/21/2009] [Indexed: 11/15/2022]
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