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Sakuma S, Tanikawa T, Tsunekuni R, Mine J, Kumagai A, Miyazawa K, Takadate Y, Uchida Y. Experimental Infection of Chickens with H5N8 High Pathogenicity Avian Influenza Viruses Isolated in Japan in the Winter of 2020-2021. Viruses 2023; 15:2293. [PMID: 38140534 PMCID: PMC10748181 DOI: 10.3390/v15122293] [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: 11/14/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
During the winter of 2020-2021, numerous outbreaks of high pathogenicity avian influenza (HPAI) were caused by viruses of the subtype H5N8 in poultry over a wide region in Japan. The virus can be divided into five genotypes-E1, E2, E3, E5, and E7. The major genotype responsible for the outbreaks was E3, followed by E2. To investigate the cause of these outbreaks, we experimentally infected chickens with five representative strains of each genotype. We found that the 50% chicken infectious dose differed by up to 75 times among the five strains, and the titer of the E3 strains (102.75 50% egg infectious dose (EID50)) was the lowest, followed by that of the E2 strains (103.50 EID50). In viral transmission experiments, in addition to the E3 and E2 strains, the E5 strain was transmitted to naïve chickens with high efficiency (>80%), whereas the other strains had low efficiencies (<20%). We observed a clear difference in the virological characteristics among the five strains isolated in the same season. The higher infectivity of the E3 and E2 viruses in chickens may have caused the large number of HPAI outbreaks in Japan during this season.
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Affiliation(s)
| | | | | | | | | | | | | | - Yuko Uchida
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba 305-0856, Ibaraki, Japan; (S.S.); (T.T.); (R.T.); (J.M.); (A.K.); (K.M.); (Y.T.)
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Tanikawa T, Watanabe S, Mikami O, Miyazaki A. Genetics of the rabbit haemorrhagic disease virus strains responsible for rabbit haemorrhagic disease outbreaks in Japan between 2000 and 2020. J Gen Virol 2023; 104. [PMID: 37159399 DOI: 10.1099/jgv.0.001846] [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] [Indexed: 05/11/2023] Open
Abstract
Rabbit haemorrhagic disease (RHD) is a highly contagious and fatal disease in rabbits caused by the rabbit haemorrhagic disease virus (RHDV), which includes two genotypes, RHDV-GI.1 and RHDV2-GI.2. RHDVs tend to recombine among different strains, resulting in significant genetic evolution. This study evaluated the genetics of Japanese RHDV strains associated with six outbreaks between 2000 and 2020 using whole-genome sequencing, genomic recombination and phylogenetic analyses. Genomic recombination analysis using near-complete genomic sequences revealed that two Japanese strains detected in 2000 and 2002 were non-recombinant GI.1 (variant RHDVa-GI.1a) strains of different origins, most closely related to strains identified in PR China in 1997 and the USA in 2001, respectively. In contrast, four recent Japanese GI.2 strains detected between 2019 and 2020 were recombinant viruses harbouring structural protein (SP) genes from GI.2 strains and non-SP (NSP) genes from a benign rabbit calicivirus (RCV) strain of genotype RCV-E1-GI.3 (GI.3P-GI.2) or an RHDV G1-GI.1b variant (GI.1bP-GI.2). Phylogenetic analysis based on SP and NSP regions revealed that the GI.1bP-GI.2 recombinant virus detected in Ehime prefecture and the GI.3P-GI.2 recombinant viruses detected in Ibaraki, Tochigi and Chiba prefectures were most closely related to recombinant viruses identified in Australia in 2017 and Germany in 2017, respectively. These results suggested that past RHD outbreaks in Japan did not result from the evolution of domestic RHDVs but rather represented incursions of foreign RHDV strains, implying that Japan is constantly at risk of RHDV incursion from other countries.
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Affiliation(s)
- Taichiro Tanikawa
- National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Satoko Watanabe
- National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Osamu Mikami
- National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Ayako Miyazaki
- National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
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3
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Tanikawa T, Fujii K, Sugie Y, Tsunekuni R. Ubiquitin-specific protease 18 in mallard (Anas platyrhynchos) interferes with type I interferon-mediated inhibition of high pathogenicity avian influenza virus replication. Virology 2022; 577:32-42. [PMID: 36270121 DOI: 10.1016/j.virol.2022.10.001] [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: 07/18/2022] [Revised: 09/29/2022] [Accepted: 10/01/2022] [Indexed: 11/19/2022]
Abstract
Ubiquitin-specific protease 18 (USP18) is a well-established innate immune factor in vertebrates. Although Anatidae birds rarely exhibit distinctive clinical signs during high pathogenicity avian influenza virus (HPAIV) infections, some virus strains cause deadly diseases. Here, we investigated the association between USP18 expression and pathogenicity during HPAIV infections in the Anatidae mallard Anas platyrhynchos. First, mallard USP18 gene (duUSP18) was cloned, and its transcriptional variants, with three different open reading frames, were characterized. Experimental infections with two different pathogenic strains, Miyazaki and Takeo, demonstrated an early induction of duUSP18 mRNA upon HPAIV infection in a bird's whole body in vivo and in primary duck cells in vitro, which was positively associated with pathogenicity in mallards. In addition, duUSP18 knockdown under interferon-β stimulation attenuated viral replication, regardless of pathogenicity. These results indicate a role for duUSP18 in favoring viral replication and virus resistance to type I interferon immunity in mallards.
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Affiliation(s)
- Taichiro Tanikawa
- National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki, 305-0856, Japan.
| | - Kotaro Fujii
- Toyama Prefectural Tobu Livestock Hygiene Service Center, 46 Mizuhashi-kanao-shin, Toyama, 939-3536, Japan.
| | - Yuji Sugie
- Shiga Prefectural Livestock Hygiene Service Center, 226-1, Nishihongou, Oumihachiman, Shiga, 523-0813, Japan.
| | - Ryota Tsunekuni
- National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki, 305-0856, Japan.
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Tanikawa T, Fujii K, Sugie Y, Tsunekuni R, Nakayama M, Kobayashi S. Comparative susceptibility of mallard (Anas platyrhynchos) to infection with high pathogenicity avian influenza virus strains (Gs/Gd lineage) isolated in Japan in 2004–2017. Vet Microbiol 2022; 272:109496. [DOI: 10.1016/j.vetmic.2022.109496] [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: 02/10/2022] [Revised: 05/30/2022] [Accepted: 06/25/2022] [Indexed: 10/17/2022]
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Mine J, Tsunekuni R, Tanikawa T, Uchida Y, Dubovitskiy N, Derko A, Sobolev I, Shestopalov A, Sharshov K, Saito T. Genetics of Japanese H5N8 high pathogenicity avian influenza viruses isolated in winter 2020-2021 and their genetic relationship with avian influenza viruses in Siberia. Transbound Emerg Dis 2022; 69:e2195-e2213. [PMID: 35445801 DOI: 10.1111/tbed.14559] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 12/23/2021] [Revised: 04/07/2022] [Accepted: 04/12/2022] [Indexed: 11/27/2022]
Abstract
In winter 2020-2021, Japan experienced multiple serious outbreaks of H5N8 high pathogenicity avian influenza (HPAI)-52 outbreaks at poultry farms and 58 cases in wild birds or the environment-that occurred simultaneously with outbreaks in Europe. Here, we examined how the H5N8 HPAI viruses (HPAIVs) emerged and spread through Japan and across the Eurasian continent. Phylogenetic and phylogeographic analyses were performed using full genetic sequences of the viruses that caused 52 outbreaks at poultry farms or were isolated from 11 infected wild birds. Genetically, the viruses showed five genotypes (E1, E2, E3, E5, E7) that have already been reported in Korea. The viruses showing the E3 genotype were found to have caused most of the HPAI outbreaks at poultry farms and were detected over the longest period of time. The internal genes of the viruses were genetically related to those of AIVs isolated through avian influenza surveillance activities in regions of Siberia including Buryatia, Yakutia, and Amur regions, suggesting that the Japanese viruses emerged via reassortment events with AIVs genetically related to Siberian AIVs. In addition, H5N2 and H5N8 HPAIVs were isolated from wild birds during surveillance activities conducted in the Novosibirsk region of Siberia in summer 2020. Phylogenetic analyses revealed that these viruses possessed hemagglutinin genes that were related to those of H5N8 HPAIVs that were circulating in Europe in winter 2020-2021. These results suggest that the viruses in wild birds during summer in Siberia most likely spread in both Asia and Europe the following winter. Together, the present results emphasize the importance of continual monitoring of AIVs in Siberia for forecasting outbreaks not only in Asia but also further away in Europe. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Junki Mine
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan
| | - Ryota Tsunekuni
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan
| | - Taichiro Tanikawa
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan
| | - Yuko Uchida
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan
| | - Nikita Dubovitskiy
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Anastasiya Derko
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Ivan Sobolev
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Alexander Shestopalov
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Kirill Sharshov
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Takehiko Saito
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan.,United Graduate School of Veterinary Sciences, Gifu University, 1-1, Yanagito, Gifu, 501-1112, Japan
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Takashita E, Morita H, Nagata S, Shirakura M, Fujisaki S, Miura H, Takayama I, Arita T, Suzuki Y, Yamaoka M, Tanikawa T, Tsunekuni R, Mine J, Sakuma S, Uchida Y, Shibata A, Iwanaka M, Kishida N, Nakamura K, Kageyama T, Watanabe S, Hasegawa H. Antiviral susceptibilities of avian influenza A(H5), A(H7), and A(H9) viruses isolated in Japan. Jpn J Infect Dis 2021; 75:398-402. [PMID: 34980710 DOI: 10.7883/yoken.jjid.2021.751] [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] [Indexed: 11/17/2022]
Abstract
Circulation of avian influenza A viruses in poultry is a public health concern because these viruses may cause severe disease in humans and have the potential to become more transmissible among humans. Monitoring the susceptibility of these viruses to antivirals is important for influenza pandemic preparedness. However, information about their antiviral susceptibility is limited. Here, we determined the susceptibilities of avian influenza A(H5N1), A(H5N2), A(H5N8), A(H7N7), A(H7N9), A(H9N1), and A(H9N2) viruses isolated in Japan to the antivirals approved for use there: the M2 inhibitor amantadine; the neuraminidase inhibitors oseltamivir, peramivir, zanamivir, and laninamivir; and the RNA polymerase inhibitors baloxavir and favipiravir. Genotypic methods that detect amino acid substitutions associated with antiviral resistance and phenotypic methods that assess viral susceptibility to drugs revealed that these avian influenza A viruses are susceptible to neuraminidase inhibitors and RNA polymerase inhibitors. These results suggest that the neuraminidase inhibitors and the RNA polymerase inhibitors currently approved in Japan could be a treatment option against influenza A virus infections in humans.
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Affiliation(s)
- Emi Takashita
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Hiroko Morita
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Shiho Nagata
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Masayuki Shirakura
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Seiichiro Fujisaki
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Hideka Miura
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Ikuyo Takayama
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Tomoko Arita
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Yasushi Suzuki
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | | | - Taichiro Tanikawa
- Virus group, Division of Infectious Animal Disease Research, National Institute of Animal Health, National Agriculture and Food Research Organization, Japan
| | - Ryota Tsunekuni
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, National Agriculture and Food Research Organization, Japan
| | - Junki Mine
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, National Agriculture and Food Research Organization, Japan
| | - Saki Sakuma
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, National Agriculture and Food Research Organization, Japan
| | - Yuko Uchida
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, National Agriculture and Food Research Organization, Japan
| | - Akihiro Shibata
- Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Japan
| | - Mari Iwanaka
- Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Japan
| | - Noriko Kishida
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Kazuya Nakamura
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Tsutomu Kageyama
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Shinji Watanabe
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
| | - Hideki Hasegawa
- Center for Influenza and Respiratory Virus Research, National Institute of Infectious Diseases, Japan
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- The members of the group are listed in the Appendix
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Matsuu A, Tanikawa T, Fujimoto Y, Yabuki M, Tsunekuni R, Sakuma S, Uchida Y, Saito T. Different Sensitivity of Japanese Native-Bred Chickens to H5 Subtypes of Highly Pathogenic Avian Influenza Viruses. Avian Dis 2021; 65:508-515. [PMID: 34699150 DOI: 10.1637/aviandiseases-d-21-00049] [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: 05/14/2021] [Accepted: 07/20/2021] [Indexed: 11/05/2022]
Abstract
The aim of this study was to investigate the sensitivity of three breeds of Japanese native chickens, commercial broilers, and specific-pathogen-free (SPF) white leghorns to three strains of the H5 subtype of highly pathogenic avian influenza viruses (HPAIVs). Chickens were experimentally inoculated with doses of 102, 104, and 106 50% egg infective dose of A/mandarin duck/Miyazaki/22M-765/2011 (duck-11), A/chicken/Miyazaki/7/2014 (chicken-14), and A/chicken/Kumamoto/1-2C/2016 (chicken-16). The 50% chicken lethal dose of each virus, mean death time, and viral shedding patterns were compared. The Japanese native chickens showed varied susceptibility to the three H5 HPAIV isolates. Although two of the breeds showed some degree of resistance to duck-11 and chicken-14, all three were more sensitive to chicken-16 than commercial broiler chickens. We have shown that Japanese native chickens do not necessarily have resistance to HPAIV and that the pathogenic characteristics of HPAIVs are quite different between native and commercial chickens.
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Affiliation(s)
- Aya Matsuu
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan,
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-0856, Japan
| | - Yoshikazu Fujimoto
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Mihoko Yabuki
- Transboundary Animal Diseases Research Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-0856, Japan
| | - Saki Sakuma
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-0856, Japan
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-0856, Japan
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-0856, Japan.,United Graduate School of Veterinary Sciences, Gifu University, Gifu City 501-1193, Japan
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Tohi Y, Kato T, Yokomizo A, Mitsuzuka K, Tomida R, Inokuchi J, Matsumoto R, Saito T, Sasaki H, Inoue K, Kinoshita H, Fukuhara H, Maruyama S, Sakamoto S, Tanikawa T, Egawa S, Ichikura H, Abe T, Nakamura M, Kakehi Y, Sugimoto M. Impact of health-related quality of life on repeat protocol biopsy compliance on active surveillance for favorable prostate cancer: Results from a prospective cohort in the PRIAS-JAPAN study. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01410-x] [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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Sakuma S, Uchida Y, Kajita M, Tanikawa T, Mine J, Tsunekuni R, Saito T. First Outbreak of an H5N8 Highly Pathogenic Avian Influenza Virus on a Chicken Farm in Japan in 2020. Viruses 2021; 13:v13030489. [PMID: 33809529 PMCID: PMC8001370 DOI: 10.3390/v13030489] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/11/2021] [Accepted: 03/11/2021] [Indexed: 02/05/2023] Open
Abstract
On 5 November 2020, a confirmed outbreak due to an H5N8 highly pathogenic avian influenza virus (HPAIV) occurred at an egg-hen farm in Kagawa prefecture (western Japan). This virus, A/chicken/Kagawa/11C/2020 (Kagawa11C2020), was the first HPAI poultry isolate in Japan in 2020 and had multiple basic amino acids—a motif conferring high pathogenicity to chickens—at the hemagglutinin cleavage site. Mortality of chickens was 100% through intravenous inoculation tests performed according to World Organization for Animal Health criteria. Phylogenetic analysis showed that the hemagglutinin of Kagawa11C2020 belongs to clade 2.3.4.4B of the H5 Goose/Guangdong lineage and clusters with H5N8 HPAIVs isolated from wild bird feces collected in Hokkaido (Japan) and Korea in October 2020. These H5N8 HPAIVs are closely related to H5N8 HPAIVs isolated in European countries during the winter of 2019–2020. Intranasal inoculation of chickens with 106 fifty-percent egg infectious doses of Kagawa11C2020 revealed that the 50% chicken lethal dose was 104.63 and the mean time to death was 134.4 h. All infected chickens demonstrated viral shedding beginning on 2 dpi—before clinical signs were observed. These results suggest that affected chickens could transmit Kagawa11C2020 to surrounding chickens in the absence of clinical signs for several days before they died.
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Affiliation(s)
- Saki Sakuma
- Division of Transboundary Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki 3050856, Japan; (S.S.); (T.T.); (J.M.); (R.T.); (T.S.)
| | - Yuko Uchida
- Division of Transboundary Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki 3050856, Japan; (S.S.); (T.T.); (J.M.); (R.T.); (T.S.)
- Correspondence: ; Tel.: +81-29-838-7758
| | - Momoyo Kajita
- Hokkaido Kamikawa Livestock Hygiene Service Center, Hokkaido 0718154, Japan;
| | - Taichiro Tanikawa
- Division of Transboundary Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki 3050856, Japan; (S.S.); (T.T.); (J.M.); (R.T.); (T.S.)
| | - Junki Mine
- Division of Transboundary Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki 3050856, Japan; (S.S.); (T.T.); (J.M.); (R.T.); (T.S.)
| | - Ryota Tsunekuni
- Division of Transboundary Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki 3050856, Japan; (S.S.); (T.T.); (J.M.); (R.T.); (T.S.)
| | - Takehiko Saito
- Division of Transboundary Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Ibaraki 3050856, Japan; (S.S.); (T.T.); (J.M.); (R.T.); (T.S.)
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Tanikawa T, Karabekyan S, Kovalev S, Casalbuoni S, Asgekar V, Bonetti S, Wall S, Laarmann T, Turchinovich D, Zalden P, Kampfrath T, Fisher AS, Stojanovic N, Gensch M, Geloni G. Volt-per-Ångstrom terahertz fields from X-ray free-electron lasers. J Synchrotron Radiat 2020; 27:796-798. [PMID: 32381783 PMCID: PMC7206546 DOI: 10.1107/s1600577520004245] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
The electron linear accelerators driving modern X-ray free-electron lasers can emit intense, tunable, quasi-monochromatic terahertz (THz) transients with peak electric fields of V Å-1 and peak magnetic fields in excess of 10 T when a purpose-built, compact, superconducting THz undulator is implemented. New research avenues such as X-ray movies of THz-driven mode-selective chemistry come into reach by making dual use of the ultra-short GeV electron bunches, possible by a rather minor extension of the infrastructure.
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Affiliation(s)
- T. Tanikawa
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - S. Karabekyan
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - S. Kovalev
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - S. Casalbuoni
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - V. Asgekar
- Physics Department, S. P. Pune University, Pune 411 007, India
| | - S. Bonetti
- Department of Physics, Stockholm University, 106 91 Stockholm, Sweden
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy
| | - S. Wall
- ICFO, Avinguda Carl Friedrich Gauss 3, 08860 Castelldefels, Barcelona, Spain
| | - T. Laarmann
- Deutsches Elektronen Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging CUI, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - D. Turchinovich
- Fakultät für Physik, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - P. Zalden
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - T. Kampfrath
- Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - A. S. Fisher
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - N. Stojanovic
- Deutsches Elektronen Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- DLR – Institute for Optical Sensor Systems, Rutherfordstraße 2, 12489 Berlin, Germany
| | - M. Gensch
- DLR – Institute for Optical Sensor Systems, Rutherfordstraße 2, 12489 Berlin, Germany
- Institute of Optics and Atomic Physics, Technische Universität Berlin, Straße des 17 Juni 135, 10623 Berlin, Germany
| | - G. Geloni
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
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11
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Kotoda M, Hishiyama S, Mitsui K, Tanikawa T, Morikawa S, Takamino A, Matsukawa T. Assessment of the potential for pathogen dispersal during high-flow nasal therapy. J Hosp Infect 2019; 104:534-537. [PMID: 31759093 PMCID: PMC7114853 DOI: 10.1016/j.jhin.2019.11.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 11/22/2022]
Abstract
High-flow nasal therapy is increasingly used in hospitals because of its effectiveness and patient comfort. However, pathogens in the patient's nasal and oral cavities may be dispersed by forced air. This study aimed to investigate the risk of pathogen dispersal during high-flow nasal therapy. Liquid and bacterial dispersal were assessed via in-vitro experimental set-ups using a manikin. Thickened water or fresh yeast solution mimicked saliva and nasal mucus secretions. Dispersal was limited to the proximal area of the face and nasal cannula, suggesting that high-flow nasal therapy does not increase the risk of droplet and contact infection.
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Affiliation(s)
- M Kotoda
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan; Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, USA.
| | - S Hishiyama
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - K Mitsui
- Surgical Center, University of Yamanashi Hospital, University of Yamanashi, Yamanashi, Japan
| | - T Tanikawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - S Morikawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - A Takamino
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - T Matsukawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
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Tsunekuni R, Tanikawa T, Nakaya T, Saito T. Improvement of a recombinant avian avulavirus serotype 10 vectored vaccine by the addition of untranslated regions. Vaccine 2019; 38:822-829. [PMID: 31718900 DOI: 10.1016/j.vaccine.2019.10.098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 10/28/2019] [Accepted: 10/29/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND We have previously developed a recombinant avian avulavirus serotype 10 (rAAvV-10/HA) expressing the hemagglutinin (HA) gene of a highly pathogenic avian influenza virus (HPAIV) as an emergency vaccine for poultry. rAAvV-10/HA can overcome the activity of the anti-AAvV-1 (Newcastle disease virus) antibody acquired by commercial chickens upon routine vaccination. Most chickens do not have the anti-AAvV-10 antibody, which could interfere with the vaccine efficacy. However, the vaccine efficacy of rAAvV-10/HA is not satisfactory in chickens even though it affords protection against an HPAIV challenge. In the present study, we improved the rAAvV-10/HA vaccine by enhancing the expression of the exogenous HA protein. METHODS The 5' and 3' untranslated regions (UTR) of each AAvV-10 gene were flanked with the exogenous HA gene cassette to modify rAAvV-10/HA, yielding different rAAv10-UTRs. As a control, rAAv10-nonUTR that did not contain any UTRs was generated. The effects of UTRs on mRNA transcription, HA protein expression, and vaccine efficacy were then examined using embryonated chicken eggs and white leghorn chickens. RESULTS The proportion of the HA gene mRNA among the vector-derived mRNAs (1.55-1.84-fold increase vs. the control) and HA protein levels (148-1151-fold increase vs. the control) in cells infected with rAAv10-UTRs were higher than in those infected with rAAv10-nonUTR. In vivo, vaccination of chickens with rAAv10-UTRs resulted in 100% protection against an HPAIV challenge. No chickens vaccinated with rAAv10-NP-UTR, rAAv10-F-UTR, or rAAv10-HN-UTR shed the virus in the throat and cloaca swabs. By contrast, rAAv10-nonUTR vaccination offered 70% protection, with 50% of chickens shedding the virus in the cloaca or throat swabs after the challenge. We conclude that the AAvV-10 UTRs can enhance the expression of the exogenous HA gene, resulting in improved efficacy of the rAAvV-10/HA vector vaccine. This improvement aids in the protection of flocks worldwide from the highly pathogenic avian influenza.
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Affiliation(s)
- Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan.
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan.
| | - Takaaki Nakaya
- Department of Infectious Diseases, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan.
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan; United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu City, Gifu 501-1193, Japan.
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Chen M, Deinert JC, Green B, Wang Z, Ilyakov I, Awari N, Bawatna M, Germanskiy S, de Oliveira TVAG, Geloni G, Tanikawa T, Gensch M, Kovalev S. Pulse- and field-resolved THz-diagnostics at 4 t h generation lightsources. Opt Express 2019; 27:32360-32369. [PMID: 31684450 DOI: 10.1364/oe.27.032360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 09/20/2019] [Indexed: 06/10/2023]
Abstract
Multi-color pump-probe techniques utilizing modern accelerator-based 4th generation light sources such as X-ray free electron lasers or superradiant THz facilities have become important science drivers over the past 10 years. In this type of experiments the precise knowledge of the properties of the involved accelerator-based light pulses crucially determines the achievable sensitivity and temporal resolution. In this work we demonstrate and discuss the powerful role pulse- and field-resolved- detection of superradiant THz pulses can play for improving the precision of THz pump - femtosecond laser probe experiments at superradiant THz facilities in particular and at 4th generation light sources in general. The developed diagnostic scheme provides real-time information on the properties of individual pulses from multiple accelerator based THz sources and opens a robust way for sub femtosecond timing. Correlations between amplitude and phase of the pulses emitted from different superradiant THz sources furthermore provide insides into the properties of the driving electron bunches and is of general interest for the ultra-fast diagnostics at 4th generation light sources.
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14
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Nakayama M, Uchida Y, Shibata A, Kobayashi Y, Mine J, Takemae N, Tsunekuni R, Tanikawa T, Harada R, Osaka H, Saito T. A novel H7N3 reassortant originating from the zoonotic H7N9 highly pathogenic avian influenza viruses that has adapted to ducks. Transbound Emerg Dis 2019; 66:2342-2352. [PMID: 31293102 DOI: 10.1111/tbed.13291] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 02/19/2019] [Revised: 06/03/2019] [Accepted: 06/30/2019] [Indexed: 12/17/2022]
Abstract
The first human case of zoonotic H7N9 avian influenza virus (AIV) infection was reported in March 2013 in China. This virus continues to circulate in poultry in China while mutating to highly pathogenic AIVs (HPAIVs). Through monitoring at airports in Japan, a novel H7N3 reassortant of the zoonotic H7N9 HPAIVs, A/duck/Japan/AQ-HE30-1/2018 (HE30-1), was detected in a poultry meat product illegally brought by a passenger from China into Japan. We analysed the genetic, pathogenic and antigenic characteristics of HE30-1 by comparing it with previous zoonotic H7N9 AIVs and their reassortants. Phylogenetic analysis of the entire HE30-1 genomic sequence revealed that it comprised at least three different sources; the HA (H7), PB1, PA, NP, M and NS segments of HE30-1 were directly derived from H7N9 AIVs, whereas the NA (N3) and PB2 segments of HE30-1 were unrelated to zoonotic H7N9. Experimental infection revealed that HE30-1 was lethal in chickens but not in domestic or mallard ducks. HE30-1 was shed from and replicated in domestic and mallard ducks and chickens, whereas previous zoonotic H7N9 AIVs have not adapted well to ducks. This finding suggests the possibility that HE30-1 may disseminate to remote area by wild bird migration once it establishes in wild bird population. A haemagglutination-inhibition assay indicated that antigenic drift has occurred among the reassortants of zoonotic H7N9 AIVs; HE30-1 showed similar antigenicity to some of those H7N9 AIVs, suggesting it might be prevented by the H5/H7 inactivated vaccine that was introduced in China in 2017. Our study reports the emergence of a new reassortant of zoonotic H7N9 AIVs with novel viral characteristics and warns of the challenge we still face to control the zoonotic H7N9 AIVs and their reassortants.
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Affiliation(s)
- Momoko Nakayama
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Akihiro Shibata
- Exotic Disease Inspection Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Tokoname, Japan
| | - Yoshifumi Kobayashi
- Pathological and Physiochemical Examination Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Yokohama, Japan
| | - Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Rieko Harada
- Exotic Disease Inspection Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Tokoname, Japan
| | - Hiroyuki Osaka
- Exotic Disease Inspection Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Tokoname, Japan
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan.,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
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15
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Tsunekuni R, Sudo K, Nguyen PT, Luu BD, Phuong TD, Tan TM, Nguyen T, Mine J, Nakayama M, Tanikawa T, Sharshov K, Takemae N, Saito T. Isolation of highly pathogenic H5N6 avian influenza virus in Southern Vietnam with genetic similarity to those infecting humans in China. Transbound Emerg Dis 2019; 66:2209-2217. [PMID: 31309743 DOI: 10.1111/tbed.13294] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/04/2019] [Accepted: 07/08/2019] [Indexed: 11/30/2022]
Abstract
Since 2013, H5N6 highly pathogenic avian influenza viruses (HPAIVs) have been responsible for outbreaks in poultry and wild birds around Asia. H5N6 HPAIV is also a public concern due to sporadic human infections being reported in China. In the current study, we isolated an H5N6 HPAIV strain (A/Muscovy duck/Long An/AI470/2018; AI470) from an outbreak at a Muscovy duck farm in Long An Province in Southern Vietnam in July 2018 and genetically characterized it. Basic Local Alignment Search Tool (BLAST) analysis revealed that the eight genomic segments of AI470 were most closely related (99.6%-99.9%) to A/common gull/Saratov/1676/2018 (H5N6), which was isolated in October 2018 in Russia. Furthermore, AI470 also shared 99.4%-99.9% homology with A/Guangxi/32797/2018, an H5N6 HPAIV strain that infected humans in China in 2018. Phylogenetic analyses of the entire genome showed that AI470 was directly derived from H5N6 HPAIVs that were in South China from 2015 to 2018 and clustered with four H5N6 HPAIV strains of human origin in South China from 2017 to 2018. This indicated that AI470 was introduced into Vietnam from China. In addition, molecular characteristics related to mammalian adaptation among the recent human H5N6 HPAIV viruses, except PB2 E627K, were shared by AI470. These findings are cause for concern since H5N6 HPAIV strains that possess a risk of human infection have crossed the Chinese border.
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Affiliation(s)
- Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Kasumi Sudo
- National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan
| | - Phuong Thanh Nguyen
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Bach Duc Luu
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Thai Duy Phuong
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Tran Minh Tan
- Department of Animal Health, Regional Animal Health Office No. 6, Ho Chi Minh City, Vietnam
| | - Tung Nguyen
- Division of International Cooperation and Communications, Department of Animal Health, Hanoi, Vietnam
| | - Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Momoko Nakayama
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Kirill Sharshov
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan.,Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand.,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
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16
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Mine J, Uchida Y, Nakayama M, Tanikawa T, Tsunekuni R, Sharshov K, Takemae N, Sobolev I, Shestpalov A, Saito T. Genetics and pathogenicity of H5N6 highly pathogenic avian influenza viruses isolated from wild birds and a chicken in Japan during winter 2017-2018. Virology 2019; 533:1-11. [PMID: 31071540 DOI: 10.1016/j.virol.2019.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 03/22/2019] [Revised: 04/24/2019] [Accepted: 04/24/2019] [Indexed: 01/27/2023]
Abstract
An H5N6 highly pathogenic avian influenza virus (HPAIV) outbreak occurred in poultry in Japan during January 2018, and H5N6 HPAIVs killed several wild birds in 3 prefectures during Winter 2017-2018. Time-measured phylogenetic analyses demonstrated that the Hemagglutinin (HA) and internal genes of these isolates were genetically similar to clade 2.3.4.4.B H5N8 HPAIVs in Europe during Winter 2016-2017, and Neuraminidase (NA) genes of the poultry and wild bird isolates were gained through distinct reassortments with AIVs that were estimated to have circulated possibly in Siberia during Summer 2017 and Summer 2016, respectively. Lethal infectious dose to chickens was similar between the poultry and wild-bird isolates. H5N6 HPAIVs during Winter 2017-2018 in Japan had higher 50% chicken lethal doses and lower transmission efficiency than the H5Nx HPAIVs that caused previous outbreaks in Japan, thus explaining in part why cases during the 2017-2018 outbreak were sporadic.
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Affiliation(s)
- Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok, 10900, Thailand
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok, 10900, Thailand
| | - Momoko Nakayama
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok, 10900, Thailand
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok, 10900, Thailand
| | - Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok, 10900, Thailand
| | - Kirill Sharshov
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok, 10900, Thailand
| | - Ivan Sobolev
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Alexander Shestpalov
- Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok, 10900, Thailand; United Graduate School of Veterinary Sciences, Gifu University, 1-1, Yanagito, Gifu, Gifu, 501-1112, Japan.
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Uchida Y, Mine J, Takemae N, Tanikawa T, Tsunekuni R, Saito T. Comparative pathogenicity of H5N6 subtype highly pathogenic avian influenza viruses in chicken, Pekin duck and Muscovy duck. Transbound Emerg Dis 2019; 66:1227-1251. [DOI: 10.1111/tbed.13141] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Yuko Uchida
- Influenza Unit, Division of Transboundary Animal DiseasesNational Institute of Animal Health, National Agriculture and Food Research Organization (NARO) Kannondai, Tsukuba Ibaraki Japan
| | - Junki Mine
- Influenza Unit, Division of Transboundary Animal DiseasesNational Institute of Animal Health, National Agriculture and Food Research Organization (NARO) Kannondai, Tsukuba Ibaraki Japan
| | - Nobuhiro Takemae
- Influenza Unit, Division of Transboundary Animal DiseasesNational Institute of Animal Health, National Agriculture and Food Research Organization (NARO) Kannondai, Tsukuba Ibaraki Japan
| | - Taichiro Tanikawa
- Influenza Unit, Division of Transboundary Animal DiseasesNational Institute of Animal Health, National Agriculture and Food Research Organization (NARO) Kannondai, Tsukuba Ibaraki Japan
| | - Ryota Tsunekuni
- Influenza Unit, Division of Transboundary Animal DiseasesNational Institute of Animal Health, National Agriculture and Food Research Organization (NARO) Kannondai, Tsukuba Ibaraki Japan
| | - Takehiko Saito
- Influenza Unit, Division of Transboundary Animal DiseasesNational Institute of Animal Health, National Agriculture and Food Research Organization (NARO) Kannondai, Tsukuba Ibaraki Japan
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Tsunekuni R, Hikono H, Tanikawa T, Kurata R, Nakaya T, Saito T. Recombinant Avian Paramyxovirus Serotypes 2, 6, and 10 as Vaccine Vectors for Highly Pathogenic Avian Influenza in Chickens with Antibodies Against Newcastle Disease Virus. Avian Dis 2018; 61:296-306. [PMID: 28957006 DOI: 10.1637/11512-100616-regr1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 11/05/2022]
Abstract
Recombinant Newcastle disease virus (rNDV) expressing the hemagglutinin of highly pathogenic avian influenza virus (HPAIV HA) induces protective immunity against HPAIV in chickens. However, the efficacy of rNDV vectors is hampered when chickens are pre-immune to NDV, and most commercial chickens are routinely vaccinated against NDV. We recently showed that avian paramyxovirus serotypes 2, 6, and 10 (APMV-2, APMV-6, and APMV-10), which belong to the same genus as NDV, have low cross-reactivity with anti-NDV antisera. Here, we used reverse genetics to generate recombinant APMV-2, APMV-6, and APMV-10 (rAPMV-2/HA, rAPMV-6/HA, and rAPMV-10/HA) that expressed an HA protein derived of subtype H5N1 HPAIV, A/chicken/Yamaguchi/7/2004. Chickens pre-immunized against NDV (age, 7 wk) were vaccinated with rAPMV/HAs; 14 days after vaccination, chickens were challenged with a lethal dose of HPAIV. Immunization of chickens pre-immunized against NDV with rAPMV-2/HA, rAPMV-6/HA, or rAPMV-10/HA protected 50%, 50%, and 25%, respectively, in groups of chickens given an rAPMV/HA with 106 median embryo infectious dose (EID50) or 50%, 50%, and 90%, respectively, in those with 107 EID50; in contrast, rNDV/HA protected none of the chicken vaccinated with 106 EID50 and induced only partial protection even with 107 EID50. Therefore, the presence of anti-NDV antibodies did not hamper the efficacy of rAPMV-2/HA, rAPMV-6/HA, or rAPMV-10/HA. These results suggest that rAPMV-2, rAPMV-6, and rAPMV-10 are potential vaccine vectors, especially for commercial chickens, which are routinely vaccinated against NDV.
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Affiliation(s)
- Ryota Tsunekuni
- A Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan
| | - Hirokazu Hikono
- B National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan
| | - Taichiro Tanikawa
- A Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan
| | - Riho Kurata
- B National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan
| | - Takaaki Nakaya
- C Department of Infectious Diseases, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Takehiko Saito
- A Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0854, Japan
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Tsunekuni R, Yaguchi Y, Kashima Y, Yamashita K, Takemae N, Mine J, Tanikawa T, Uchida Y, Saito T. Spatial transmission of H5N6 highly pathogenic avian influenza viruses among wild birds in Ibaraki Prefecture, Japan, 2016-2017. Arch Virol 2018; 163:1195-1207. [PMID: 29392495 DOI: 10.1007/s00705-018-3752-7] [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: 11/01/2017] [Accepted: 01/10/2018] [Indexed: 11/25/2022]
Abstract
From 29 November 2016 to 24 January 2017, sixty-three cases of H5N6 highly pathogenic avian influenza virus (HPAIV) infections were detected in wild birds in Ibaraki Prefecture, Japan. Here, we analyzed the genetic, temporal, and geographic correlations of these 63 HPAIVs to elucidate their dissemination throughout the prefecture. Full-genome sequence analysis of the Ibaraki isolates showed that 7 segments (PB2, PB1, PA, HA, NP, NA, NS) were derived from G1.1.9 strains while the M segment was from G1.1 strains; both groups of strains circulated in south China. Pathological studies revealed severe systemic infection in dead swans (the majority of dead birds and the only species necropsied), thus indicating high susceptibility to H5N6 HPAIVs. Coalescent phylogenetic analysis using the 7 G1.1.9-derived segments enabled detailed analysis of the short-term evolution of these highly homologous HPAIVs. This analysis revealed that the H5N6 HPAIVs isolated from wild birds in Ibaraki Prefecture were divided into 7 groups. Spatial analysis demonstrated that most of the cases concentrated around Senba Lake originated from a single source, and progeny viruses were transmitted to other locations after the infection expanded in mute swans. In contrast, within just a 5-km radius of the area in which cases were concentrated, three different intrusions of H5N6 HPAIVs were evident. Multi-segment analysis of short-term evolution showed that not only was the invading virus spread throughout Ibaraki Prefecture but also that, despite the small size of this region, multiple invasions had occurred during winter 2016-2017.
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Affiliation(s)
- Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Yuji Yaguchi
- Ibaraki Prefecture Kenpoku Livestock Hygiene Service Center, 966-1 Nakagachityo, Mito, Ibaraki, 310-0002, Japan
| | - Yuki Kashima
- Ibaraki Prefecture Kenpoku Livestock Hygiene Service Center, 966-1 Nakagachityo, Mito, Ibaraki, 310-0002, Japan
| | - Kaoru Yamashita
- Ibaraki Prefecture Kenpoku Livestock Hygiene Service Center, 966-1 Nakagachityo, Mito, Ibaraki, 310-0002, Japan
| | - Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki, 305-0854, Japan.
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Takemae N, Tsunekuni R, Sharshov K, Tanikawa T, Uchida Y, Ito H, Soda K, Usui T, Sobolev I, Shestopalov A, Yamaguchi T, Mine J, Ito T, Saito T. Five distinct reassortants of H5N6 highly pathogenic avian influenza A viruses affected Japan during the winter of 2016-2017. Virology 2017; 512:8-20. [PMID: 28892736 DOI: 10.1016/j.virol.2017.08.035] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 08/22/2017] [Accepted: 08/24/2017] [Indexed: 01/05/2023]
Abstract
To elucidate the evolutionary pathway, we sequenced the entire genomes of 89 H5N6 highly pathogenic avian influenza viruses (HPAIVs) isolated in Japan during winter 2016-2017 and 117 AIV/HPAIVs isolated in Japan and Russia. Phylogenetic analysis showed that at least 5 distinct genotypes of H5N6 HPAIVs affected poultry and wild birds during that period. Japanese H5N6 isolates shared a common genetic ancestor in 6 of 8 genomic segments, and the PA and NS genes demonstrated 4 and 2 genetic origins, respectively. Six gene segments originated from a putative ancestral clade 2.3.4.4 H5N6 virus that was a possible genetic reassortant among Chinese clade 2.3.4.4 H5N6 HPAIVs. In addition, 2 NS clusters and a PA cluster in Japanese H5N6 HPAIVs originated from Chinese HPAIVs, whereas 3 distinct AIV-derived PA clusters were evident. These results suggest that migratory birds were important in the spread and genetic diversification of clade 2.3.4.4 H5 HPAIVs.
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Affiliation(s)
- Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Kirill Sharshov
- Research Institute of Experimental and Clinical Medicine, 2, Timakova street, Novosibirsk 630117, Russia
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Hiroshi Ito
- The Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-cho Minami, Tottori, Tottori 680-8550, Japan
| | - Kosuke Soda
- The Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-cho Minami, Tottori, Tottori 680-8550, Japan
| | - Tatsufumi Usui
- The Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-cho Minami, Tottori, Tottori 680-8550, Japan
| | - Ivan Sobolev
- Research Institute of Experimental and Clinical Medicine, 2, Timakova street, Novosibirsk 630117, Russia
| | - Alexander Shestopalov
- Research Institute of Experimental and Clinical Medicine, 2, Timakova street, Novosibirsk 630117, Russia
| | - Tsuyoshi Yamaguchi
- The Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-cho Minami, Tottori, Tottori 680-8550, Japan
| | - Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Toshihiro Ito
- The Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, 4-101 Koyama-cho Minami, Tottori, Tottori 680-8550, Japan
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center, Kasetklang, Chatuchak, Bangkok 10900, Thailand; United Graduate School of Veterinary Sciences, Gifu University, 1-1, Yanagito, Gifu, Gifu 501-1112, Japan.
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Tanikawa T, Uchida Y, Saito T. Replication of a low-pathogenic avian influenza virus is enhanced by chicken ubiquitin-specific protease 18. J Gen Virol 2017; 98:2235-2247. [DOI: 10.1099/jgv.0.000890] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305–0856, Japan
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305–0856, Japan
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305–0856, Japan
- United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu City 501-1193, Japan
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Uchida Y, Takemae N, Tanikawa T, Kanehira K, Saito T. Transmission of an H5N8-Subtype Highly Pathogenic Avian Influenza Virus from Infected Hens to Laid Eggs. Avian Dis 2017; 60:450-3. [PMID: 27309286 DOI: 10.1637/11312-110315-reg] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We showed here that an H5N8-subtype highly pathogenic avian influenza virus (HPAIV) was transmitted to both the internal contents and shells of eggs laid by white leghorn hens experimentally infected with the virus. Seven of eight HPAIV-infected hens laid eggs until 4 days postinoculation (dpi). The mean number of eggs laid per head daily decreased significantly from 0.58 before inoculation to 0.18 after viral inoculation. The virus was detected in the eggs laid by three of the seven hens. Viral transmission was detectable beginning on 3 dpi, and virus titers in tracheal and cloacal swabs from the hens that laid the contaminated eggs exceeded 2.9 log10 EID50. The level of viral replication and its timing when virus replicates enough to be detected in oviduct after virus inoculation appear to be key factors in the transmission of H5N8 HPAIV from infected hens to laid eggs.
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Affiliation(s)
- Yuko Uchida
- A Influenza and Prion Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305-0856. Japan
| | - Nobuhiro Takemae
- A Influenza and Prion Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305-0856. Japan
| | - Taichiro Tanikawa
- A Influenza and Prion Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305-0856. Japan
| | - Katsushi Kanehira
- A Influenza and Prion Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305-0856. Japan
| | - Takehiko Saito
- A Influenza and Prion Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Kannondai, Tsukuba, Ibaraki 305-0856. Japan.,B United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu City 501-1193, Japan
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Shinohara S, Tanikawa T, Hada T, Funaki I, Nishida H, Matsuoka T, Otsuka F, Shamrai KP, Rudenko TS, Nakamura T, Mishio A, Ishii H, Teshigahara N, Fujitsuka H, Waseda S. High-Density Helicon Plasma Sources: Basics and Application to Electrodeless Electric Propulsion. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-a16896] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Shinohara
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - T. Tanikawa
- Tokai University, 4-1-1, Kita-kaname, Hiratsuka, Kanagawa 259-1292, Japan
| | - T. Hada
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - I. Funaki
- Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa 252-5210, Japan
| | - H. Nishida
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - T. Matsuoka
- Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa 252-5210, Japan
| | - F. Otsuka
- Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan
| | - K. P. Shamrai
- Institute of Nuclear Research, 47 Prospect Nauki, Kiev 03680, Ukraine
| | - T. S. Rudenko
- Institute of Nuclear Research, 47 Prospect Nauki, Kiev 03680, Ukraine
| | - T. Nakamura
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - A. Mishio
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - H. Ishii
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - N. Teshigahara
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - H. Fujitsuka
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
| | - S. Waseda
- Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Tokyo 184-8588, Japan
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Tanikawa T, Kanehira K, Tsunekuni R, Uchida Y, Takemae N, Saito T. Pathogenicity of H5N8 highly pathogenic avian influenza viruses isolated from a wild bird fecal specimen and a chicken in Japan in 2014. Microbiol Immunol 2017; 60:243-52. [PMID: 26916882 DOI: 10.1111/1348-0421.12369] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 12/14/2015] [Revised: 02/08/2016] [Accepted: 02/21/2016] [Indexed: 01/22/2023]
Abstract
Poultry outbreaks caused by H5N8 highly pathogenic avian influenza viruses (HPAIVs) occurred in Japan between December 2014 and January 2015. During the same period; H5N8 HPAIVs were isolated from wild birds and the environment in Japan. The hemagglutinin (HA) genes of these isolates were found to belong to clade 2.3.4.4 and three sub-groups were distinguishable within this clade. All of the Japanese isolates from poultry outbreaks belonged to the same sub-group; whereas wild bird isolates belonged to the other sub-groups. To examine whether the difference in pathogenicity to chickens between isolates of different HA sub-groups of clade 2.3.4.4 could explain why the Japanese poultry outbreaks were only caused by a particular sub-group; pathogenicities of A/chicken/Miyazaki/7/2014 (Miyazaki2014; sub-group C) and A/duck/Chiba/26-372-48/2014 (Chiba2014; sub-group A) to chickens were compared and it was found that the lethality of Miyazaki2014 in chickens was lower than that of Chiba2014; according to the 50% chicken lethal dose. This indicated that differences in pathogenicity may not explain why the Japanese poultry outbreaks only involved group C isolates.
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Affiliation(s)
- Taichiro Tanikawa
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856
| | - Katsushi Kanehira
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856
| | - Ryota Tsunekuni
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856
| | - Yuko Uchida
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856
| | - Nobuhiro Takemae
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856
| | - Takehiko Saito
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856.,United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu City 501-1193, Japan
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Shimura Y, Shoji N, Tanikawa T, Obayashi T, Honda J, Tanaka M, Sasaki Y, Fukushima J, Inamoto T. Nurmi-type Culture Prepared using Culture Media without l-Cysteine Enhances Salmonella Exclusion in Hatched Layer Chicks. J Poult Sci 2016; 53:165-172. [PMID: 32908380 PMCID: PMC7477276 DOI: 10.2141/jpsa.0150101] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 11/18/2015] [Indexed: 11/21/2022] Open
Abstract
To determine the influence of media composition on Salmonella exclusion of Nurmi-type cultures, two and four types of cultures in the first and second trial, respectively, were prepared from the cecal contents of conventional laying hens, and Salmonella exclusion was assessed in newly hatched chicks. In the first trial, modified Viande Levure (VL) broth or nutrient broth (NB) were used to prepare Nurmi-type cultures (N-VL and N-NB), which were administered to the newly hatched chicks. Twenty-four hours later, the chicks were challenged with Salmonella enterica Typhimurium EF85-9 (ST). ST recoveries (log10 colony forming units/g of cecal contents) from the N-VL-, N-NB-, and control-treated groups 5 days after the challenge were 7.6±0.6, 0.9±1.9, and 7.7±0.4, respectively. The results suggested the influence of l-cysteine (Cys) present in the VL broth. Thus, we determined the effect of Cys in the second trial. We prepared two other cultures using VL broth without Cys (N-VL-Cys) and NB with Cys (NNB-Cys). ST recoveries from the cecal contents of the N-VL-, N-VL-Cys-, and control-treated groups were 6.3±0.9, 2.1±2.5, and 9.2±0.8, respectively. ST was not recovered from the N-NB- and N-NB-Cys-treated groups. To identify bacteria with Salmonella exclusion activity, we isolated 41 bacterial strains from the ceca of N-NB-treated chicks without Salmonella challenge. Most isolates were identified as Enterococcus faecalis or E. mundtii based on 16S rRNA gene sequencing, and only four cultures excluded Salmonella. Therefore, VL broth containing Cys was not always required for preparing Nurmi-type cultures. The use of media prepared with Cys at the lowest possible concentration or without Cys would promote to enhance Salmonella exclusion from Nurmi-type cultures.
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Affiliation(s)
- Yoichiro Shimura
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Nobuo Shoji
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Taichiro Tanikawa
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Tomoaki Obayashi
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Jun Honda
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Miyuki Tanaka
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Yukiko Sasaki
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Jun Fukushima
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
| | - Tamio Inamoto
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Akita 010-0195, Japan
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Inokuchi J, Kuroiwa K, Naito S, Kakehi Y, Sugimoto M, Tanikawa T, Fujimoto H, Gotoh M, Masumori N, Ogawa O, Etoh M, Ohyama C, Yamaguchi A, Matsuyama H, Ichikawa T, Asano T, Takenaka A, Fujimoto K, Yamaguchi R, Habuchi T, Hashine K, Arai Y, Nagaoka A, Nishiyama H, Shinohara N, Niwakawa M, Egawa S, Ozono S, Kawano Y, Ishizuka O, Nishimura K, Tochigi T, Sugimura Y, Mizusawa J, Eba J. 801 The impact of ureteral ligation on clinical outcome during radical nephroureterectomy for upper urinary tract urothelial carcinoma: Multi-institutional case series study JCOG1110A. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/s1569-9056(16)60803-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Saito T, Tanikawa T, Uchida Y, Takemae N, Kanehira K, Tsunekuni R. Intracontinental and intercontinental dissemination of Asian H5 highly pathogenic avian influenza virus (clade 2.3.4.4) in the winter of 2014-2015. Rev Med Virol 2015; 25:388-405. [DOI: 10.1002/rmv.1857] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 08/02/2015] [Accepted: 08/13/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Takehiko Saito
- Influenza and Prion Disease Research Center; National Institute of Animal Health National Agriculture and Food Research Organization (NARO); Tsukuba Ibaraki Japan
- United Graduate School of Veterinary Sciences; Gifu University; Gifu City Japan
| | - Taichiro Tanikawa
- Influenza and Prion Disease Research Center; National Institute of Animal Health National Agriculture and Food Research Organization (NARO); Tsukuba Ibaraki Japan
| | - Yuko Uchida
- Influenza and Prion Disease Research Center; National Institute of Animal Health National Agriculture and Food Research Organization (NARO); Tsukuba Ibaraki Japan
| | - Nobuhiro Takemae
- Influenza and Prion Disease Research Center; National Institute of Animal Health National Agriculture and Food Research Organization (NARO); Tsukuba Ibaraki Japan
| | - Katsushi Kanehira
- Influenza and Prion Disease Research Center; National Institute of Animal Health National Agriculture and Food Research Organization (NARO); Tsukuba Ibaraki Japan
| | - Ryota Tsunekuni
- Influenza and Prion Disease Research Center; National Institute of Animal Health National Agriculture and Food Research Organization (NARO); Tsukuba Ibaraki Japan
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28
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Abe H, Mine J, Parchariyanon S, Takemae N, Boonpornprasert P, Ubonyaem N, Patcharasinghawut P, Nuansrichay B, Tanikawa T, Tsunekuni R, Saito T. Co-infection of influenza A viruses of swine contributes to effective shuffling of gene segments in a naturally reared pig. Virology 2015; 484:203-212. [PMID: 26115167 DOI: 10.1016/j.virol.2015.06.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 02/04/2015] [Revised: 06/01/2015] [Accepted: 06/02/2015] [Indexed: 11/26/2022]
Abstract
Following the 2009 H1N1 pandemic, surveillance activities have been accelerated globally to monitor the emergence of novel reassortant viruses. However, the mechanism by which influenza A viruses of swine (IAV-S) acquire novel gene constellations through reassortment events in natural settings remains poorly understood. To explore the mechanism, we collected 785 nasal swabs from pigs in a farm in Thailand from 2011 to 2014. H3N2, H3N1, H1N1 and H1N2 IAVs-S were isolated from a single co-infected sample by plaque purification and showed a high degree of diversity of the genome. In particular, the H1N1 isolates, possessing a novel gene constellation previously unreported in Thailand, exhibited greater variation in internal genes than H3N2 IAVs-S. A pair of isolates, designated H3N2-B and H1N1-D, was determined to have been initially introduced to the farm. These results demonstrate that numerous IAVs-S with various gene constellations can be created in a single co-infected pig via reassortment.
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Affiliation(s)
- Haruka Abe
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba 305-0856, Ibaraki, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center (ZDCC), Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Junki Mine
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba 305-0856, Ibaraki, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center (ZDCC), Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Sujira Parchariyanon
- National Institute of Animal Health, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Nobuhiro Takemae
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba 305-0856, Ibaraki, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center (ZDCC), Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | | | - Namfon Ubonyaem
- National Institute of Animal Health, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | | | - Bandit Nuansrichay
- National Institute of Animal Health, Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Taichiro Tanikawa
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba 305-0856, Ibaraki, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center (ZDCC), Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Ryota Tsunekuni
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba 305-0856, Ibaraki, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center (ZDCC), Kasetklang, Chatuchak, Bangkok 10900, Thailand
| | - Takehiko Saito
- Influenza and Prion Disease Research Center, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba 305-0856, Ibaraki, Japan; Thailand-Japan Zoonotic Diseases Collaboration Center (ZDCC), Kasetklang, Chatuchak, Bangkok 10900, Thailand.
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Sakamoto Y, Hirai N, Tanikawa T, Yago M, Ishii M. Population genetic structure and Wolbachia infection in an endangered butterfly, Zizina emelina (Lepidoptera, Lycaenidae), in Japan. Bull Entomol Res 2015; 105:152-165. [PMID: 25499047 DOI: 10.1017/s0007485314000819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Zizina emelina (de l'Orza) is listed on Japan's Red Data List as an endangered species because of loss of its principal food plant and habitat. We compared parts of the mitochondrial and nuclear genes of this species to investigate the level of genetic differentiation among the 14 extant populations. We also examined infection of the butterfly with the bacterium Wolbachia to clarify the bacterium's effects on the host population's genetic structure. Mitochondrial and nuclear DNA analyses revealed that haplotype composition differed significantly among most of the populations, and the fixation index F ST was positively correlated with geographic distance. In addition, we found three strains of Wolbachia, one of which was a male killer; these strains were prevalent in several populations. There was linkage between some host mitochondrial haplotypes and the three Wolbachia strains, although no significant differences were found in a comparison of host mitochondrial genetic diversity with nuclear genetic diversity in Wolbachia-infected or -uninfected populations. These genetic analyses and Wolbachia infection findings show that Z. emelina has little migratory activity and that little gene flow occurs among the current populations.
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Affiliation(s)
- Y Sakamoto
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
| | - N Hirai
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
| | - T Tanikawa
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
| | - M Yago
- The University Museum, The University of Tokyo,7-3-1 Hongo,Bunkyo-ku,Tokyo 113-0033,Japan
| | - M Ishii
- Entomological Laboratory,Graduate School of Life and Environmental Sciences,Osaka Prefecture University,Sakai,Osaka 599-8531,Japan
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30
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Shinohara S, Tanikawa T, Motomura T. A segmented multi-loop antenna for selective excitation of azimuthal mode number in a helicon plasma source. Rev Sci Instrum 2014; 85:093509. [PMID: 25273728 DOI: 10.1063/1.4896041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A flat type, segmented multi-loop antenna was developed in the Tokai Helicon Device, built for producing high-density helicon plasma, with a diameter of 20 cm and an axial length of 100 cm. This antenna, composed of azimuthally splitting segments located on four different radial positions, i.e., r = 2.8, 4.8, 6.8, and 8.8 cm, can excite the azimuthal mode number m of 0, ±1, and ±2 by a proper choice of antenna feeder parts just on the rear side of the antenna. Power dependencies of the electron density ne were investigated with a radio frequency (rf) power less than 3 kW (excitation frequency ranged from 8 to 20 MHz) by the use of various types of antenna segments, and n(e) up to ~5 × 10(12) cm(-3) was obtained after the density jump from inductively coupled plasma to helicon discharges. Radial density profiles of m = 0 and ±1 modes with low and high rf powers were measured. For the cases of these modes after the density jump, the excited mode structures derived from the magnetic probe measurements were consistent with those expected from theory on helicon waves excited in the plasma.
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Affiliation(s)
- S Shinohara
- Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - T Tanikawa
- Research Institute of Science and Technology, Tokai University, 4-1-1, Kita-kaname, Hiratsuka, Kanagawa 259-1292, Japan
| | - T Motomura
- National Institute of Advanced Industrial Science and Technology (AIST), 807-1, Shuku-machi, Tosu, Saga 841-0052 Japan
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Choi JH, Shojiki K, Tanikawa T, Hanada T, Katayama R, Matsuoka T. Effect of sapphire nitridation and group-III source flow rate ratio on In-incorporation into InGaN grown by metalorganic vapor phase epitaxy. J Nanosci Nanotechnol 2014; 14:6112-6115. [PMID: 25936067 DOI: 10.1166/jnn.2014.8306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In-composition of N-polar InGaN films on the sapphire substrate with the surface nitridation was investigated. By varying the ratio of the group-III source flow rate from 0.7 to 0.95, the In-composition and the surface morphologies of InGaN films were changed. The In-composition of N-polar InGaN films was affected by the strain relaxation and the surface morphologies.
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Li H, Tanikawa T, Sato Y, Nakagawa Y, Matsuyama T. Serratia marcescensGene Required for Surfactant Serrawettin W1 Production Encodes Putative Aminolipid Synthetase Belonging to Nonribosomal Peptide Synthetase Family. Microbiol Immunol 2013; 49:303-10. [PMID: 15840955 DOI: 10.1111/j.1348-0421.2005.tb03734.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Serrawettin W1 produced by Serratia marcescens is a surface active exolipid having various functions supporting behaviors of bacteria on surface environments. Through the genetic analyses of serrawettin-less mutants of S. marcescens 274, the swrW gene encoding putative serrawettin W1 synthetase was identified. Homology analysis of the putative SwrW demonstrated the presence of condensation, adenylation, thiolation, and thioesterase domains which are characteristic for nonribosomal peptide synthetase (NRPS). NRPSs have been known as multi-modular enzymes. Linear alignment of these modules specifying respective amino acids will enable peptide bond formation resulting in a specific amino acid sequence. Putative SwrW was uni-modular NRPS specifying only L-serine. Possible steps in this simple unimodular NRPS for biosynthesis of serrawettin W1 [ cyclo-(D-3-hydroxydecanoyl-L-seryl) (2) ] were predicted by referring to the ingenious enzymatic activity of gramicidin S synthetase (multi-modular NRPS) of Brevibacillus brevis.
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Affiliation(s)
- Hong Li
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University, Niigata, Japan
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Abstract
Serratia marcescens has been known as a temperature-dependent producer of two chemically different exolipids (red pigment prodigiosin and biosurfactant serrawettin W1) in parallel. During genetic investigation of such control mechanisms, mini-Tn 5 insertional mutant Tan1 overproducing these exolipids was isolated. The gene concerning such disregulation was identified as hexS by DNA cloning followed by sequencing and homology analysis of the presumed product with 314 amino-acids. The product HexS was the homologue of HexA of Erwinia carotovora ssp. carotovora and classified as a transcriptional regulator belonging to LysR family. By RT-PCR analysis, the hexS mutant was shown to over-transcribe the pigA gene (the first gene of the pig cluster involved in prodigiosin synthesis) and the swrW gene encoding serrawettin W1 synthetase belonging to the nonribosomal peptide synthetase family. In contrast, transcription of the pswP gene encoding phosphopantetheinyl transferase in Tan1 was in the level of parent strain 274. Purified protein encoded in his(6)-hexS demonstrated binding activity to DNA fragments of the upstream region of pigA and swrW genes and not to that of the pswP gene. S. marcescens strain 274 transformed with a low-copy plasmid carrying hexS demonstrated reduced production of prodigiosin and serrawettin W1, and reduced activity of exoenzymes (protease, chitinase, and DNase) except phospholipase C. Possible generation of virulent S. marcescens by derepression or mutation of the hexS gene in infected tissues or ex vivo environments was suggested.
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Affiliation(s)
- Taichiro Tanikawa
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University, Niigata, Japan
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Hayashi T, Watanabe C, Suzuki Y, Tanikawa T, Uchida Y, Saito T. Chicken MDA5 senses short double-stranded RNA with implications for antiviral response against avian influenza viruses in chicken. J Innate Immun 2013; 6:58-71. [PMID: 23860388 DOI: 10.1159/000351583] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Accepted: 04/19/2013] [Indexed: 12/24/2022] Open
Abstract
Mammalian melanoma differentiation-associated gene-5 (MDA5) and retinoic acid-inducible gene-I (RIG-I) selectively sense double-stranded RNA (dsRNA) according to length, as well as various RNA viruses to induce an antiviral response. RIG-I, which plays a predominant role in the induction of antiviral responses against influenza virus infection, has been considered to be lacking in chicken, putting the function of chicken MDA5 (chMDA5) under the spotlight. Here, we show that chMDA5, unlike mammalian MDA5, preferentially senses shorter dsRNA synthetic analogues, poly(I:C), in chicken DF-1 fibroblasts. A requirement for caspase activation and recruitment domains for chMDA5-mediated chicken interferon beta (chIFNβ) induction and its interaction with mitochondrial antiviral signaling proteins were demonstrated. We also found that chMDA5 is involved in chIFNβ induction against avian influenza virus infection. Our findings imply that chMDA5 compensates in part the function of RIG-I in chicken, and highlights the importance of chMDA5 in the innate immune response in chicken.
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Affiliation(s)
- Tsuyoshi Hayashi
- Viral diseases and Epidemiology Research Division, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
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Cohen D, Stamnes S, Tanikawa T, Sommersten ER, Stamnes JJ, Lotsberg JK, Stamnes K. Comparison of discrete ordinate and Monte Carlo simulations of polarized radiative transfer in two coupled slabs with different refractive indices. Opt Express 2013; 21:9592-9614. [PMID: 23609670 DOI: 10.1364/oe.21.009592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A comparison is presented of two different methods for polarized radiative transfer in coupled media consisting of two adjacent slabs with different refractive indices, each slab being a stratified medium with no change in optical properties except in the direction of stratification. One of the methods is based on solving the integro-differential radiative transfer equation for the two coupled slabs using the discrete ordinate approximation. The other method is based on probabilistic and statistical concepts and simulates the propagation of polarized light using the Monte Carlo approach. The emphasis is on non-Rayleigh scattering for particles in the Mie regime. Comparisons with benchmark results available for a slab with constant refractive index show that both methods reproduce these benchmark results when the refractive index is set to be the same in the two slabs. Computed results for test cases with coupling (different refractive indices in the two slabs) show that the two methods produce essentially identical results for identical input in terms of absorption and scattering coefficients and scattering phase matrices.
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Affiliation(s)
- D Cohen
- Department of Physics and Engineering Physics, Stevens Institute of Technology, 1 Castle point, Hoboken, NJ 07030, USA
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Couprie ME, Benabderrahmane C, Betinelli P, Bouvet F, Buteau A, Cassinari L, Daillant J, Denard JC, Eymard P, Gagey B, Herbeaux C, Labat M, Lagarde B, Lestrade A, Loulergue A, Marchand P, Marlats JL, Miron C, Morin P, Nadji A, Polack F, Pruvost JB, Ribeiro F, Ricaud JP, Roy P, Tanikawa T, Roux R, Bielawski S, Evain C, Szwaj C, Lambert G, Lifschitz A, Malka V, Lehe R, Rousse A, Phuoc KT, Thaury C, Devanz G, Luong M, Carré B, LeBec G, Farvacque L, Dubois A, Lüning J. The LUNEX5 project in France. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/425/7/072001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Uchida Y, Suzuki Y, Shirakura M, Kawaguchi A, Nobusawa E, Tanikawa T, Hikono H, Takemae N, Mase M, Kanehira K, Hayashi T, Tagawa Y, Tashiro M, Saito T. Genetics and infectivity of H5N1 highly pathogenic avian influenza viruses isolated from chickens and wild birds in Japan during 2010–11. Virus Res 2012; 170:109-17. [DOI: 10.1016/j.virusres.2012.09.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 09/11/2012] [Accepted: 09/12/2012] [Indexed: 01/17/2023]
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Tobisawa Y, Maruyama T, Tanikawa T, Nakanishi K, Kurohane K, Imai Y. Establishment of recombinant hybrid-IgG/IgA immunoglobulin specific for Shiga toxin. Scand J Immunol 2011; 74:574-84. [PMID: 21883352 DOI: 10.1111/j.1365-3083.2011.02617.x] [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: 11/29/2022]
Abstract
Shiga toxin 1 produced by enterohaemorrhagic Escherichia coli is an AB(5) toxin that is involved in the life-threatening haemolytic-uraemic syndrome. The B subunits (Stx1B) are cell-binding subunits. We previously established mouse hybridoma cell line producing IgA and IgG monoclonal antibodies (mAbs) against Stx1B. Here, we cloned cDNAs encoding each of the heavy, light and joining (J) chains from the hybridoma cell lines by means of the 5' rapid amplification of cDNA ends (RACE) PCR method. Upon assignment of the variable regions of the heavy and light chains to known germline sequences, we found substantial somatic hypermutation in the complementarity-determining regions in both the IgA and IgG mAbs. We also established a hybrid-IgG/IgA heavy chain having variable regions of the IgG mAb by means of recombinant PCR methods. Upon transient expression of the hybrid-IgG/IgA heavy, IgG-associated light and J chains in COS-1 cells, the translated dimeric hybrid-IgG/IgA bound to immobilized Stx1B, as revealed on ELISA. The production of dimeric hybrid-IgG/IgA was revealed on immunoblot analysis. The dimeric hybrid-IgG/IgA inhibited the binding of digoxigenin-conjugated Stx1B to natural ligands (CD77) displayed on Burkitt's lymphoma cell line Ramos. These results indicate that the replacement of variable regions resulted in the production of more useful recombinant dimeric IgA against Stx1B.
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Affiliation(s)
- Y Tobisawa
- Laboratory of Microbiology and Immunology and the Global COE program, University of Shizuoka School of Pharmaceutical Sciences, Suruga-ku, Shizuoka, Japan
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Tanikawa T, Shoji N, Sonohara N, Saito S, Shimura Y, Fukushima J, Inamoto T. Aging transition of the bacterial community structure in the chick ceca. Poult Sci 2011; 90:1004-8. [DOI: 10.3382/ps.2010-01153] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Dunsiger SR, Carlo JP, Goko T, Nieuwenhuys G, Prokscha T, Suter A, Morenzoni E, Chiba D, Nishitani Y, Tanikawa T, Matsukura F, Ohno H, Ohe J, Maekawa S, Uemura YJ. Spatially homogeneous ferromagnetism of (Ga, Mn)As. Nat Mater 2010; 9:299-303. [PMID: 20305642 DOI: 10.1038/nmat2715] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Accepted: 01/28/2010] [Indexed: 05/29/2023]
Abstract
Mn-doped GaAs is a ferromagnetic semiconductor, widely studied because of its possible application for spin-sensitive 'spintronics' devices. The material also attracts great interest in fundamental research regarding its evolution from a paramagnetic insulator to a ferromagnetic metal. The high sensitivity of its physical properties to preparation conditions and heat treatments and the strong doping and temperature dependencies of the magnetic anisotropy have generated a view in the research community that ferromagnetism in (Ga, Mn)As may be associated with unavoidable and intrinsic strong spatial inhomogeneity. Muon spin relaxation (muSR) probes magnetism, yielding unique information about the volume fraction of regions having static magnetic order, as well as the size and distribution of the ordered moments. By combining low-energy muSR, conductivity and a.c. and d.c. magnetization results obtained on high-quality thin-film specimens, we demonstrate here that (Ga, Mn)As shows a sharp onset of ferromagnetic order, developing homogeneously in the full volume fraction, in both insulating and metallic films. Smooth evolution of the ordered moment size across the insulator-metal phase boundary indicates strong ferromagnetic coupling between Mn moments that exists before the emergence of fully itinerant hole carriers.
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Shimada M, Katoh M, Adachi M, Tanikawa T, Kimura S, Hosaka M, Yamamoto N, Takashima Y, Takahashi T. Transverse-longitudinal coupling effect in laser bunch slicing. Phys Rev Lett 2009; 103:144802. [PMID: 19905574 DOI: 10.1103/physrevlett.103.144802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Indexed: 05/28/2023]
Abstract
We report turn-by-turn observation of coherent synchrotron radiation (CSR) produced by the laser bunch slicing technique at an electron storage ring operated with a small momentum compaction factor. CSR emission was intermittent, and its interval depended strongly on the betatron tune. This peculiar behavior of the CSR could be interpreted as a result of coupling between the transverse and longitudinal motion of the electrons. This is the first observation of such an effect, which would be important not only for controlling the CSR emission but also for generating and transporting ultrashort electron bunches or electron bunches with microdensity structures in advanced accelerators.
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Affiliation(s)
- M Shimada
- High Energy Accelerator Research Organization, KEK, Tsukuba, 305-0801, Japan.
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Tanikawa T, Ishikawa T, Maekawa T, Kuronane K, Imai Y. Characterization of monoclonal immunoglobulin a and g against shiga toxin binding subunits produced by intranasal immunization. Scand J Immunol 2008; 68:414-22. [PMID: 18782271 DOI: 10.1111/j.1365-3083.2008.02153.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [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
Immunoglobulin A (IgA) is considered to play a major role in protection of the mucosal surface. However, its immunological and biological properties have not been extensively studied because the production of IgA class monoclonal antibodies (mAbs) is difficult. We compared the properties of IgA and IgG mAbs against Shiga toxin B subunits (Stx1B). These mAbs were secreted from hybridomas that had been produced from mice after intranasal immunization with recombinant Stx1B and cholera toxin. The dose response curves for the binding of the IgA (clone G2G7) and IgG (clone D11C6) mAbs to immobilized Stx1B were similar, as revealed on ELISA. The majority of the IgA mAb formed dimers while the IgG mAb was monomeric, as judged by immunoblot analysis. The IgG mAb completely inhibited the binding of Stx1B to Burkitt's lymphoma cell line Ramos, while the inhibition by the IgA mAb was only partial. The IgG mAb was able to neutralize the cytotoxicity of Stx1 holotoxin towards Vero cells, whereas the IgA mAb was not. The binding affinity of each binding site was compared by means of surface plasmon resonance analysis involving a capture method, with which the binding of soluble Stx1B to immobilized mAb was detected. The association rate was similar but the dissociation rate was twofold faster in the case of the IgA mAb, resulting in twofold higher affinity of the IgG mAb. These results suggest that one can obtain high affinity IgA mAb but toxin neutralization is another challenge as to therapeutic antibodies of the IgA class.
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Affiliation(s)
- T Tanikawa
- Laboratory of Microbiology and Immunology and the Global COE Program, University of Shizuoka School of Pharmaceutical Sciences, Shizuoka-shi, Shizuoka, Japan
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Tanikawa T, Hikosaka T, Honda Y, Yamaguchi M, Sawaki N. Growth of semi-polar (11-22)GaN on a (113)Si substrate by selective MOVPE. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pssc.200779236] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hikosaka T, Tanikawa T, Honda Y, Yamaguchi M, Sawaki N. Fabrication and properties of semi-polar (1-101) and (11-22) InGaN/GaN light emitting diodes on patterned Si substrates. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pssc.200778642] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Takahashi C, Nozawa T, Tanikawa T, Nakagawa Y, Wakita J, Matsushita M, Matsuyama T. Swarming of Pseudomonas aeruginosa PAO1 without differentiation into elongated hyperflagellates on hard agar minimal medium. FEMS Microbiol Lett 2008; 280:169-75. [PMID: 18248427 DOI: 10.1111/j.1574-6968.2007.01057.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Polar flagellated Pseudomonas aeruginosa PAO1 demonstrated extensive spreading growth in 2 days on 1.5% agar medium. Such spreading growth of P. aeruginosa PAO1 strains was absent on Luria-Bertani 1.5% agar medium, but remarkable on Davis minimal synthetic agar medium (especially that containing 0.8% sodium citrate and 1.5% Eiken agar) under aerobic 37 degrees C conditions. Analyses using isogenic mutants and complementation transformants showed that bacterial flagella and rhamnolipid contributed to the surface-spreading behavior. On the other hand, a type IV pilus-deficient pilA mutant did not lose the spreading growth activity. Flagella staining of PAO1 T cells from the frontal edge of a spreading colony showed unipolar and normal-sized rods with one or two flagella. Thus, the polar flagellate P. aeruginosa PAO1 T appears to swarm on high-agar medium by producing biosurfactant rhamnolipid and without differentiation into an elongated peritrichous hyperflagellate.
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Affiliation(s)
- Chihiro Takahashi
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University, Niigata, Japan
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Nozawa T, Tanikawa T, Hasegawa H, Takahashi C, Ando Y, Matsushita M, Nakagawa Y, Matsuyama T. Rhamnolipid-dependent spreading growth of Pseudomonas aeruginosa on a high-agar medium: marked enhancement under CO2-rich anaerobic conditions. Microbiol Immunol 2008; 51:703-12. [PMID: 17704632 DOI: 10.1111/j.1348-0421.2007.tb03959.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Anaerobiosis of Pseudomonas aeruginosa in infected organs is now gaining attention as a unique physiological feature. After anaerobic cultivation of P. aeruginosa wild type strain PAO1 T, we noticed an unexpectedly expanding colony on a 1.5% agar medium. The basic factors involved in this spreading growth were investigated by growing the PAO1 T strain and its isogenic mutants on a Davis high-agar minimal synthetic medium under various experimental conditions. The most promotive environment for this spreading growth was an O(2)-depleted 8% CO(2) condition. From mutational analysis of this spreading growth, flagella and type IV pili were shown to be ancillary factors for this bacterial activity. On the other hand, a rhamnolipid-deficient rhlA mutant TR failed to exhibit spreading growth on a high-agar medium. Complementation of the gene defect of the mutant TR with a plasmid carrying the rhlAB operon resulted in the restoration of the spreading growth. In addition, an external supply of rhamnolipid or other surfactants (surfactin from Bacillus subtilis or artificial product Tween 80) also restored the spreading growth of the mutant TR. Such activity of surfactants on bacterial spreading on a hard-agar medium was unique to P. aeruginosa under CO(2)-rich anaerobic conditions.
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Affiliation(s)
- Takashi Nozawa
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University, Niigata 950-2181, Japan
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Hasegawa H, Tanikawa T, Nozawa T, Nakazawa K, Nakagawa Y, Matsuyama T. Distinct function of Pseudomonas aeruginosa type IV pili disclosed in the bacterial pass-through of membrane filter with smaller pore sizes. Microbiol Immunol 2007; 51:429-33. [PMID: 17446682 DOI: 10.1111/j.1348-0421.2007.tb03930.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Membrane filter pass-through ability of Pseudomonas aeruginosa was analyzed with isogenic mutants. A flagellum-deficient fliC mutant required two-times longer time (12 hr) to pass through a 0.45-microm pore size filter. With 0.3- and 0.22-microm filters, however, the fliC mutant showed no remarkable disability. Meanwhile a pilA mutant defective in twitching motility failed to pass through the 0.22-microm filter. Complementation of the mutant with pilA gene on a plasmid restored the twitching motility and the 0.22-microm filter pass-through activity. Thus, the distinctive role of P. aeruginosa type IV pili in infiltration into finer reticulate structures was indicated.
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Affiliation(s)
- Hiroyuki Hasegawa
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University, Niigata, Japan
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Imai Y, Ishikawa T, Tanikawa T, Nakagami H, Maekawa T, Kurohane K. Production of IgA monoclonal antibody against Shiga toxin binding subunits employing nasal-associated lymphoid tissue. J Immunol Methods 2005; 302:125-35. [PMID: 15992815 DOI: 10.1016/j.jim.2005.05.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 01/31/2005] [Revised: 05/05/2005] [Accepted: 05/11/2005] [Indexed: 01/21/2023]
Abstract
We established an IgA monoclonal antibody (mAb) against Shiga toxin 1 B subunits (Stx1B) from mouse nasal-associated lymphoid tissues (NALT) of BALB/c mice. We have developed an improved protocol in which cross-linked Stx1B is intranasally administered together with cholera toxin. Surface IgA-positive NALT lymphocytes from mice immunized in this manner were enriched and then fused with mouse myeloma cells to produce hybridoma cells. Hybridoma culture supernatants were examined to see if they contain IgA against Stx1B and if they can inhibit carbohydrate recognition by Stx1B. For the latter purpose, we prepared carbohydrate ligands in which globotriose is present on the poly-lysine backbone. The established IgA mAb exhibited saturable and dose-dependent binding to the immobilized Stx1B. Inversely, the binding of the carbohydrate ligands to the immobilized Stx1B was inhibited by the mAb pretreatment. Immunoblotting and SDS-PAGE analysis revealed dimeric IgA. The IgA mAb inhibited the binding of digoxigenin-conjugated Stx1B to natural ligands displayed on a Burkitt's lymphoma cell line, Ramos. These results suggested that surface IgA-positive B cells in the inductive sites of the mucosal immune system in the upper respiratory tract are a potent source for producing IgA mAb against protein antigens with weak immunogenicity such as Stx1B.
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Affiliation(s)
- Y Imai
- Department of Microbiology and COE Program in the 21st Century, University of Shizuoka School of Pharmaceutical Sciences, 52-1 Yada, Suruga-ku, Shizuoka-shi, Shizuoka 422-8526, Japan.
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Tanaka Y, Yuasa J, Baba M, Tanikawa T, Nakagawa Y, Matsuyama T. Temperature-Dependent Bacteriostatic Activity of Serratia marcescens. Microbes Environ 2004. [DOI: 10.1264/jsme2.19.236] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yuko Tanaka
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University
| | - Junko Yuasa
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University
| | - Masahiro Baba
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University
| | - Taichiro Tanikawa
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University
| | - Yoji Nakagawa
- Department of Applied Biological Chemistry, Faculty of Agriculture, Niigata University
| | - Tohey Matsuyama
- Department of Infectious Disease Control and International Medicine, Niigata University Graduate School of Medical and Dental Sciences
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Saito K, Suwa M, Nakagawa Y, Utsugi R, Tanikawa T, Tomita Y, Takahashi K. Study of pharmacokinetic parameters of tacrolimus by different oral administration periods in renal transplantation. Transplant Proc 2002; 34:1726-9. [PMID: 12176553 DOI: 10.1016/s0041-1345(02)02999-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- K Saito
- Division of Urology, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi, Niigata, 951-8510 Japan
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