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Huynh LT, Sohn EJ, Park Y, Kim J, Shimoda T, Hiono T, Isoda N, Hong SH, Lee HN, Sakoda Y. Development of a dual immunochromatographic test strip to detect E2 and E rns antibodies against classical swine fever. Front Microbiol 2024; 15:1383976. [PMID: 38666258 PMCID: PMC11043574 DOI: 10.3389/fmicb.2024.1383976] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Background It is essential to consider a practical antibody test to successfully implement marker vaccines and validate vaccination efficacy against classical swine fever virus (CSFV). The test should include a serological antibody assay, combined with a tool for differentiating infected from vaccinated animals (DIVA). The immunochromatographic test strip (ICS) has been exclusively designed for detecting CSFV E2 antibodies while lacking in detecting Erns antibodies, which can be employed and satisfy DIVA strategy. This study developed a novel ICS for detecting CSFV E2/Erns dual-antibody. The effectiveness of ICS in evaluating the DIVA capability of two novel chimeric pestivirus vaccine candidates was assessed. Methods Recombinant E2 or Erns protein was transiently expressed in the plant benthamiana using Agrobacterium tumefaciens. ICS was subsequently assembled, and goat anti-rabbit IgG and recombinant CSFV E2 or Erns protein were plated onto the nitrocellulose membrane as control and test lines, respectively. The sensitivity and specificity of ICS were evaluated using sera with different neutralizing antibody titers or positive for antibodies against CSFV and other pestiviruses. The coincidence rates for detecting E2 and Erns antibodies between ICS and commercial enzyme-linked immunosorbent assay (ELISA) kits were also computed. ICS performance for DIVA capability was evaluated using sera from pigs vaccinated with conventional vaccine or chimeric vaccine candidates. Results E2 and Erns proteins were successfully expressed in N. benthamiana-produced recombinant proteins. ICS demonstrated high sensitivity in identifying CSFV E2 and Erns antibodies, even at the low neutralizing antibody titers. No cross-reactivity with antibodies from other pestiviruses was confirmed using ICS. There were high agreement rates of 93.0 and 96.5% between ICS and two commercial ELISA kits for E2 antibody testing. ICS also achieved strong coincidence rates of 92.9 and 89.3% with two ELISA kits for Erns antibody detection. ICS confirmed the absence of CSFV Erns-specific antibodies in sera from pigs vaccinated with chimeric vaccine candidates. Conclusion E2 and Erns proteins derived from the plant showed great potential and can be used to engineer a CSFV E2/Erns dual-antibody ICS. The ICS was also highly sensitive and specific for detecting CSFV E2 and Erns antibodies. Significantly, ICS can fulfill the DIVA concept by incorporating chimeric vaccine candidates.
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Affiliation(s)
- Loc Tan Huynh
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
- Faculty of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho, Vietnam
| | - Eun-Ju Sohn
- BioApplications, Inc., Pohang, Gyeongsangbuk, Republic of Korea
| | - Youngmin Park
- BioApplications, Inc., Pohang, Gyeongsangbuk, Republic of Korea
| | - Juhun Kim
- BioApplications, Inc., Pohang, Gyeongsangbuk, Republic of Korea
| | | | - Takahiro Hiono
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
- One Health Research Center, Hokkaido University, Sapporo, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo, Hokkaido, Japan
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
- One Health Research Center, Hokkaido University, Sapporo, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo, Hokkaido, Japan
| | - Sung-Hee Hong
- Celltrix Co., Ltd., Seongnam, Gyeonggi, Republic of Korea
| | - Ha-Na Lee
- Celltrix Co., Ltd., Seongnam, Gyeonggi, Republic of Korea
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
- One Health Research Center, Hokkaido University, Sapporo, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
- Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo, Hokkaido, Japan
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Tamura T, Yamamoto H, Ogino S, Morioka Y, Tsujino S, Suzuki R, Hiono T, Suzuki S, Isoda N, Sakoda Y, Fukuhara T. A rapid and versatile reverse genetics approach for generating recombinant positive-strand RNA viruses that use IRES-mediated translation. J Virol 2024; 98:e0163823. [PMID: 38353536 PMCID: PMC10949505 DOI: 10.1128/jvi.01638-23] [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: 10/19/2023] [Accepted: 01/24/2024] [Indexed: 03/20/2024] Open
Abstract
Reverse genetics systems have played a central role in developing recombinant viruses for a wide spectrum of virus research. The circular polymerase extension reaction (CPER) method has been applied to studying positive-strand RNA viruses, allowing researchers to bypass molecular cloning of viral cDNA clones and thus leading to the rapid generation of recombinant viruses. However, thus far, the CPER protocol has only been established using cap-dependent RNA viruses. Here, we demonstrate that a modified version of the CPER method can be successfully applied to positive-strand RNA viruses that use cap-independent, internal ribosomal entry site (IRES)-mediated translation. As a proof-of-concept, we employed mammalian viruses with different types (classes I, II, and III) of IRES to optimize the CPER method. Using the hepatitis C virus (HCV, class III), we found that inclusion in the CPER assembly of an RNA polymerase I promoter and terminator, instead of those from polymerase II, allowed greater viral production. This approach was also successful in generating recombinant bovine viral diarrhea virus (class III) following transfection of MDBK/293T co-cultures to overcome low transfection efficiency. In addition, we successfully generated the recombinant viruses from clinical specimens. Our modified CPER could be used for producing hepatitis A virus (HAV, type I) as well as de novo generation of encephalomyocarditis virus (type II). Finally, we generated recombinant HCV and HAV reporter viruses that exhibited replication comparable to that of the wild-type parental viruses. The recombinant HAV reporter virus helped evaluate antivirals. Taking the findings together, this study offers methodological advances in virology. IMPORTANCE The lack of versatility of reverse genetics systems remains a bottleneck in viral research. Especially when (re-)emerging viruses reach pandemic levels, rapid characterization and establishment of effective countermeasures using recombinant viruses are beneficial in disease control. Indeed, numerous studies have attempted to establish and improve the methods. The circular polymerase extension reaction (CPER) method has overcome major obstacles in generating recombinant viruses. However, this method has not yet been examined for positive-strand RNA viruses that use cap-independent, internal ribosome entry site-mediated translation. Here, we engineered a suitable gene cassette to expand the CPER method for all positive-strand RNA viruses. Furthermore, we overcame the difficulty of generating recombinant viruses because of low transfection efficiency. Using this modified method, we also successfully generated reporter viruses and recombinant viruses from a field sample without virus isolation. Taking these findings together, our adapted methodology is an innovative technology that could help advance virologic research.
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Affiliation(s)
- Tomokazu Tamura
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
| | - Hirotaka Yamamoto
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Saho Ogino
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yuhei Morioka
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Shuhei Tsujino
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Rigel Suzuki
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
| | - Takahiro Hiono
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Saori Suzuki
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
| | - Norikazu Isoda
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Yoshihiro Sakoda
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Takasuke Fukuhara
- Department of Microbiology and Immunology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Institute for Vaccine Research and Development (IVReD), Hokkaido University, Sapporo, Japan
- One Health Research Center, Hokkaido University, Sapporo, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- AMED-CREST, Japan Agency for Medical Research and Development (AMED), Tokyo, Japan
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Ito S, Aguilar-Vega C, Bosch J, Isoda N, Sánchez-Vizcaíno JM. Application of machine learning with large-scale data for an effective vaccination against classical swine fever for wild boar in Japan. Sci Rep 2024; 14:5312. [PMID: 38438432 PMCID: PMC10912211 DOI: 10.1038/s41598-024-55828-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/28/2024] [Indexed: 03/06/2024] Open
Abstract
Classical swine fever has been spreading across the country since its re-emergence in Japan in 2018. Gifu Prefecture has been working diligently to control the disease through the oral vaccine dissemination targeting wild boars. Although vaccines were sprayed at 14,000 locations between 2019 and 2020, vaccine ingestion by wild boars was only confirmed at 30% of the locations. Here, we predicted the vaccine ingestion rate at each point by Random Forest modeling based on vaccine dissemination data and created prediction surfaces for the probability of vaccine ingestion by wild boar using spatial interpolation techniques. Consequently, the distance from the vaccination point to the water source was the most important variable, followed by elevation, season, road density, and slope. The area under the curve, model accuracy, sensitivity, and specificity for model evaluation were 0.760, 0.678, 0.661, and 0.685, respectively. Areas with high probability of wild boar vaccination were predicted in northern, eastern, and western part of Gifu. Leave-One-Out Cross Validation results showed that Kriging approach was more accurate than the Inverse distance weighting method. We emphasize that effective vaccination strategies based on epidemiological data are essential for disease control and that our proposed tool is also applicable for other wildlife diseases.
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Affiliation(s)
- Satoshi Ito
- VISAVET Health Surveillance Center, Complutense University of Madrid, Madrid, Spain.
- Department of Animal Health, Faculty of Veterinary, Complutense University of Madrid, Madrid, Spain.
- South Kyushu Livestock Veterinary Center, Kagoshima University, Soo, Japan.
| | - Cecilia Aguilar-Vega
- VISAVET Health Surveillance Center, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary, Complutense University of Madrid, Madrid, Spain
| | - Jaime Bosch
- VISAVET Health Surveillance Center, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary, Complutense University of Madrid, Madrid, Spain
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
| | - José Manuel Sánchez-Vizcaíno
- VISAVET Health Surveillance Center, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary, Complutense University of Madrid, Madrid, Spain
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Ito S, Bosch J, Isoda N, Thanh Nguyen L, Martinez Aviles M. Editorial: Epidemiology of the transboundary swine diseases in Asia & Pacific. Front Vet Sci 2024; 11:1383900. [PMID: 38444780 PMCID: PMC10912628 DOI: 10.3389/fvets.2024.1383900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 02/12/2024] [Indexed: 03/07/2024] Open
Affiliation(s)
- Satoshi Ito
- South Kyushu Livestock Veterinary Medicine Center, Kagoshima University, Soo, Japan
| | - Jaime Bosch
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education, Hokkaido University, Sapporo, Japan
| | - Lam Thanh Nguyen
- Faculty of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho, Vietnam
| | - Marta Martinez Aviles
- Centro de Investigación en Sanidad Animal (Animal Health Research Centre), CISA-INIA/CSIC, Madrid, Spain
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Soda K, Tomioka Y, Usui T, Ozaki H, Ito H, Nagai Y, Yamamoto N, Okamatsu M, Isoda N, Kajihara M, Sakoda Y, Takada A, Ito T. Susceptibility of common dabbling and diving duck species to clade 2.3.2.1 H5N1 high pathogenicity avian influenza virus: an experimental infection study. J Vet Med Sci 2023; 85:942-949. [PMID: 37495526 PMCID: PMC10539830 DOI: 10.1292/jvms.23-0122] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023] Open
Abstract
In the winter of 2010-2011, Japan experienced a large outbreak of infections caused by clade 2.3.2.1 H5N1 high pathogenicity avian influenza viruses (HPAIVs) in wild birds. Interestingly, many tufted ducks (Aythya fuligula), which are migratory diving ducks, succumbed to the infection, whereas only one infection case was reported in migratory dabbling duck species, the major natural hosts of the influenza A virus, during the outbreak. To assess whether the susceptibility of each duck species to HPAIVs was correlated with the number of cases, tufted duck and dabbling duck species (Eurasian wigeon, Mareca penelope; mallard, Anas platyrhynchos; Northern pintail, Anas acuta) were intranasally inoculated with A/Mandarin duck/Miyazaki/22M807-1/2011 (H5N1), an index clade 2.3.2.1 virus previously used for experimental infection studies in various bird species. All ducks observed for 10 days post-inoculation (dpi) mostly shed the virus via the oral route and survived. The tufted ducks shed a higher titer of the virus than the other dabbling duck species, and one of them showed apparent neurological symptoms after 7 dpi, which were accompanied by eye lesions. No clinical symptoms were observed in the dabbling ducks, although systemic infection and viremia were observed in some of them sacrificed at 3 dpi. These results suggest that the susceptibility of clade 2.3.2.1 HPAIVs might differ by duck species.
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Affiliation(s)
- Kosuke Soda
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Yukiko Tomioka
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Tatsufumi Usui
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Hiroichi Ozaki
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Hiroshi Ito
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Yasuko Nagai
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Naoki Yamamoto
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
- Present address: Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Masahiro Kajihara
- Division of Global Epidemiology, International Institute for Zoonosis Control, Hokkaido University, Hokkaido, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Hokkaido, Japan
| | - Ayato Takada
- Division of Global Epidemiology, International Institute for Zoonosis Control, Hokkaido University, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Hokkaido, Japan
| | - Toshihiro Ito
- Department of Joint Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
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Nabeshima K, Takadate Y, Soda K, Hiono T, Isoda N, Sakoda Y, Mine J, Miyazawa K, Onuma M, Uchida Y. Detection of H5N1 High Pathogenicity Avian Influenza Viruses in Four Raptors and Two Geese in Japan in the Fall of 2022. Viruses 2023; 15:1865. [PMID: 37766272 PMCID: PMC10537537 DOI: 10.3390/v15091865] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/29/2023] Open
Abstract
In the fall of 2022, high pathogenicity avian influenza viruses (HPAIVs) were detected from raptors and geese in Japan, a month earlier than in past years, indicating a shift in detection patterns. In this study, we conducted a phylogenetic analysis on H5N1 HPAIVs detected from six wild birds during the 2022/2023 season to determine their genetic origins. Our findings revealed that these HPAIVs belong to the G2 group within clade 2.3.4.4b, with all isolates classified into three subgroups: G2b, G2d, and G2c. The genetic background of the G2b virus (a peregrine falcon-derived strain) and G2d viruses (two raptors and two geese-derived strains) were the same as those detected in Japan in the 2021/2022 season. Since no HPAI cases were reported in Japan during the summer of 2022, it is probable that migratory birds reintroduced the G2b and G2d viruses. Conversely, the G2c virus (a raptor-derived strain) was first recognized in Japan in the fall of 2022. This strain might share a common ancestor with HPAIVs from Asia and West Siberia observed in the 2021/2022 season. The early migration of waterfowl to Japan in the fall of 2022 could have facilitated the early invasion of HPAIVs.
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Affiliation(s)
- Kei Nabeshima
- Biodiversity Division, Ecological Risk Assessment and Control Section, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba 305-8506, Ibaraki, Japan;
| | - Yoshihiro Takadate
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba 305-0856, Ibaraki, Japan; (Y.T.); (J.M.); (K.M.)
| | - Kosuke Soda
- Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori 680-8553, Tottori, Japan;
| | - Takahiro Hiono
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan; (T.H.); (N.I.); (Y.S.)
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan; (T.H.); (N.I.); (Y.S.)
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan; (T.H.); (N.I.); (Y.S.)
| | - Junki Mine
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba 305-0856, Ibaraki, Japan; (Y.T.); (J.M.); (K.M.)
| | - Kohtaro Miyazawa
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba 305-0856, Ibaraki, Japan; (Y.T.); (J.M.); (K.M.)
| | - Manabu Onuma
- Biodiversity Division, Ecological Risk Assessment and Control Section, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba 305-8506, Ibaraki, Japan;
| | - Yuko Uchida
- Emerging Virus Group, Division of Zoonosis Research, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba 305-0856, Ibaraki, Japan; (Y.T.); (J.M.); (K.M.)
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Huynh LT, Isoda N, Hew LY, Ogino S, Mimura Y, Kobayashi M, Kim T, Nishi T, Fukai K, Hiono T, Sakoda Y. Generation and Efficacy of Two Chimeric Viruses Derived from GPE - Vaccine Strain as Classical Swine Fever Vaccine Candidates. Viruses 2023; 15:1587. [PMID: 37515273 PMCID: PMC10384557 DOI: 10.3390/v15071587] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/17/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
A previous study proved that vGPE- mainly maintains the properties of classical swine fever (CSF) virus, which is comparable to the GPE- vaccine seed and is a potentially valuable backbone for developing a CSF marker vaccine. Chimeric viruses were constructed based on an infectious cDNA clone derived from the live attenuated GPE- vaccine strain as novel CSF vaccine candidates that potentially meet the concept of differentiating infected from vaccinated animals (DIVA) by substituting the glycoprotein Erns of the GPE- vaccine strain with the corresponding region of non-CSF pestiviruses, either pronghorn antelope pestivirus (PAPeV) or Phocoena pestivirus (PhoPeV). High viral growth and genetic stability after serial passages of the chimeric viruses, namely vGPE-/PAPeV Erns and vGPE-/PhoPeV Erns, were confirmed in vitro. In vivo investigation revealed that two chimeric viruses had comparable immunogenicity and safety profiles to the vGPE- vaccine strain. Vaccination at a dose of 104.0 TCID50 with either vGPE-/PAPeV Erns or vGPE-/PhoPeV Erns conferred complete protection for pigs against the CSF virus challenge in the early stage of immunization. In conclusion, the characteristics of vGPE-/PAPeV Erns and vGPE-/PhoPeV Erns affirmed their properties, as the vGPE- vaccine strain, positioning them as ideal candidates for future development of a CSF marker vaccine.
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Affiliation(s)
- Loc Tan Huynh
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
- Faculty of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho 900000, Vietnam
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
- One Health Research Center, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Hokkaido, Japan
- Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo 001-0021, Hokkaido, Japan
| | - Lim Yik Hew
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
| | - Saho Ogino
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
| | - Yume Mimura
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
| | - Maya Kobayashi
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
| | - Taksoo Kim
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
| | - Tatsuya Nishi
- Kodaira Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, Kodaira 187-0022, Tokyo, Japan
| | - Katsuhiko Fukai
- Kodaira Research Station, National Institute of Animal Health, National Agriculture and Food Research Organization, Kodaira 187-0022, Tokyo, Japan
| | - Takahiro Hiono
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
- One Health Research Center, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
- Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo 001-0021, Hokkaido, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
- One Health Research Center, Hokkaido University, Sapporo 060-0818, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Hokkaido, Japan
- Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo 001-0021, Hokkaido, Japan
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Hien ND, Nguyen LT, Isoda N, Sakoda Y, Hoang LT, Stevenson MA. Descriptive epidemiology and spatial analysis of African swine fever epidemics in Can Tho, Vietnam, 2019. Prev Vet Med 2023; 211:105819. [PMID: 36571907 DOI: 10.1016/j.prevetmed.2022.105819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 11/03/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
The objectives of this study were to describe the epidemiology of African swine fever (ASF) and to identify factors that increased commune-level risk for ASF in Can Tho, a province in the Mekong River Delta of Vietnam. In 2019, a total of 2377 of the 5220 pig farms in Can Tho were ASF positive, an incidence risk of 46 (95% CI 44-47) ASF positive farms for every 100 farms at risk. Throughout the outbreak ASF resulted in either the death or culling of 59,529 pigs out of a total population size of 124,516 (just under half of the total pig population, 48%). After the first detection in Can Tho in May 2019, ASF spread quickly across all districts with an estimated dissemination ratio (EDR) of greater than one up until the end of July 2019. A mixed-effects Poisson regression model was developed to identify risk factors for ASF. One hundred unit increases in the number of pigs per square kilometre was associated with a 1.28 (95% CrI 1.05-1.55) fold increase in commune-level ASF incidence rate. One unit increases in the number of pig farms per square kilometre was associated with a 0.91 (95% CrI 0.84-0.99) decrease in commune-level ASF incidence rate. Mapping spatially contiguous communes with elevated (unaccounted-for) ASF risk provide a means for generating hypotheses for continued disease transmission. We propose that the analyses described in this paper might be run on an ongoing basis during an outbreak and disease control efforts modified in light of the information provided.
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Affiliation(s)
- Nguyen Duc Hien
- Faculty of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 street, Ninh Kieu district, Can Tho, Viet Nam; Can Tho Sub-Department of Animal Health, Ministry of Agriculture and Rural Development, 30/4 street, Ninh Kieu district, Can Tho, Viet Nam.
| | - Lam Thanh Nguyen
- Faculty of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 street, Ninh Kieu district, Can Tho, Viet Nam.
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan.
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan.
| | - Le Trung Hoang
- Faculty of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 street, Ninh Kieu district, Can Tho, Viet Nam; Can Tho Sub-Department of Animal Health, Ministry of Agriculture and Rural Development, 30/4 street, Ninh Kieu district, Can Tho, Viet Nam.
| | - Mark A Stevenson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia.
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Hiono T, Kobayashi D, Kobayashi A, Suzuki T, Satake Y, Harada R, Matsuno K, Sashika M, Ban H, Kobayashi M, Takaya F, Fujita H, Isoda N, Kimura T, Sakoda Y. Virological, pathological, and glycovirological investigations of an Ezo red fox and a tanuki naturally infected with H5N1 high pathogenicity avian influenza viruses in Hokkaido, Japan. Virology 2023; 578:35-44. [PMID: 36462496 DOI: 10.1016/j.virol.2022.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/16/2022] [Accepted: 11/20/2022] [Indexed: 11/30/2022]
Abstract
In winter/spring 2021-2022, high pathogenicity avian influenza viruses (HPAIVs) that are genetically closely related to each other were detected worldwide. In a public garden in Sapporo, Hokkaido, Japan, a crow die-off by HPAIV infection occurred from March 29 to May 18, 2022. During the event, H5N1 HPAIVs were isolated from an Ezo red fox (Vulpes vulpes schrencki) and a tanuki (Nyctereutes procyonoides albus) found in the same garden. The fox showed viral meningoencephalitis and moderate virus replication in the upper respiratory tract, whereas the tanuki showed viral conjunctivitis and secondary bacterial infection in the eyes accompanied with visceral larva migrans. Viruses isolated from the fox and the tanuki were genetically closely related to those isolated from crows in the same garden. Various α2-3 sialosides were found in the respiratory tracts of these canid mammals, consistent with HPAIV infections in these animals. This study highlighted the importance of monitoring HPAIV infections in wild carnivore mammals to detect the potential virus spreading in nature.
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Affiliation(s)
- Takahiro Hiono
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan; International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan
| | - Daiki Kobayashi
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Atsushi Kobayashi
- Laboratory of Comparative Pathology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, 060-0818, Japan; One Health Research Center, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Tamami Suzuki
- Laboratory of Comparative Pathology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, 060-0818, Japan
| | - Yuki Satake
- Laboratory of Comparative Pathology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, 060-0818, Japan
| | - Rio Harada
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Keita Matsuno
- One Health Research Center, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan; Division of Risk Analysis and Management, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan; Division of International Research Promotion, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan
| | - Mariko Sashika
- Laboratory of Wildlife Biology and Medicine, Department of Environmental Veterinary Science, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Hinako Ban
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Maya Kobayashi
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Fumihito Takaya
- Botanic Garden, Field Science Center for Northern Biosphere (FSC), Hokkaido University, Sapporo, Hokkaido, 060-0003, Japan
| | - Hiroko Fujita
- Botanic Garden, Field Science Center for Northern Biosphere (FSC), Hokkaido University, Sapporo, Hokkaido, 060-0003, Japan
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan; International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan; One Health Research Center, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan
| | - Takashi Kimura
- Laboratory of Comparative Pathology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, 060-0818, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan; International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, 001-0020, Japan; One Health Research Center, Hokkaido University, Sapporo, Hokkaido, 060-0818, Japan; Hokkaido University, Institute for Vaccine Research and Development (HU-IVReD), Sapporo, Hokkaido, 001-0021, Japan.
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10
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Fujimoto Y, Ogasawara K, Isoda N, Hatai H, Okuya K, Watanabe Y, Takada A, Sakoda Y, Saito K, Ozawa M. Experimental and natural infections of white-tailed sea eagles (Haliaeetus albicilla) with high pathogenicity avian influenza virus of H5 subtype. Front Microbiol 2022; 13:1007350. [PMID: 36262320 PMCID: PMC9574225 DOI: 10.3389/fmicb.2022.1007350] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/16/2022] [Indexed: 11/13/2022] Open
Abstract
White-tailed sea eagle (Haliaeetus albicilla), a regionally rare species of raptor, is threatened in several countries. To assess the risk of H5 high pathogenicity avian influenza (HPAI) viral infection in rare bird species, we performed experimental infections with a GS/GD96-lineage H5N6 HPAI virus of clade 2.3.4.4e in white-tailed sea eagles. Additionally, during the winter of 2020–2021 in Japan, we accidentally encountered a white-tailed sea eagle that had a fatal outcome due to natural infection with a GS/GD96-lineage H5N8 HPAI virus of clade 2.3.4.4b, allowing us to compare experimental and natural infections in the same rare raptor species. Our experiments demonstrated the susceptibility of white-tailed sea eagles to the GS/GD96-lineage H5 HPAI virus with efficient replication in systemic organs. The potential for the viruses to spread within the white-tailed sea eagle population through indirect transmission was also confirmed. Comprehensive comparisons of both viral distribution and histopathological observations between experimentally and naturally infected white-tailed sea eagles imply that viral replication in the brain is responsible for the disease severity and mortality in this species. These findings provide novel insights into the risk assessment of H5 HPAI viral infection in white-tailed sea eagles, proper diagnostic procedures, potential risks to artificially fed eagle populations and persons handling superficially healthy eagles, potential impact of intragastric infection on eagle outcomes, and possibility of severity of the disease being attributed to viral replication in the brain.
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Affiliation(s)
- Yoshikazu Fujimoto
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | | | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Hitoshi Hatai
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
| | - Kosuke Okuya
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- Division of Global Epidemiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | | | - Ayato Takada
- Division of Global Epidemiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Keisuke Saito
- Institute for Raptor Biomedicine Japan, Kushiro, Japan
| | - Makoto Ozawa
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima, Japan
- *Correspondence: Makoto Ozawa
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Isoda N, Onuma M, Hiono T, Sobolev I, Lim HY, Nabeshima K, Honjyo H, Yokoyama M, Shestopalov A, Sakoda Y. Detection of New H5N1 High Pathogenicity Avian Influenza Viruses in Winter 2021-2022 in the Far East, Which Are Genetically Close to Those in Europe. Viruses 2022; 14:v14102168. [PMID: 36298722 PMCID: PMC9606862 DOI: 10.3390/v14102168] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 08/30/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 01/06/2023] Open
Abstract
Many high pathogenicity avian influenza (HPAI) cases in wild birds due to H5N1 HPAI virus (HPAIV) infection were reported in northern Japan in the winter of 2021-2022. To investigate the epidemiology of HPAIVs brought to Japan from surrounding areas, a genetic analysis of H5 HPAIVs isolated in northern Japan was performed, and the pathogenicity of the HPAIV in chickens was assessed by experimental infection. Based on the genetic analysis of the hemagglutinin gene, pathogenic viruses detected in northern Japan as well as one in Sakhalin, the eastern part of Russia, were classified into the same subgroup as viruses prevalent in Europe in the same season but distinct from those circulating in Asia in winter 2020-2021. High identities of all eight segment sequences of A/crow/Hokkaido/0103B065/2022 (H5N1) (Crow/Hok), the representative isolates in northern Japan in 2022, to European isolates in the same season could also certify the unlikeliness of causing gene reassortment between H5 HPAIVs and viruses locally circulating in Asia. According to intranasal challenge results in six-week-old chickens, 50% of the chicken-lethal dose of Crow/Hok was calculated as 104.5 times of the 50% egg-infectious dose. These results demonstrated that the currently prevalent H5 HPAIVs could spread widely from certain origins throughout the Eurasian continent, including Europe and the Far East, and implied a possibility that contagious viruses are gathered in lakes in the northern territory via bird migration. Active monitoring of wild birds at the global level is essential to estimate the geographical source and spread dynamics of HPAIVs.
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Affiliation(s)
- Norikazu Isoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Kita 20, Nishi 11, Kita-ku, Sapporo 001-0020, Hokkaido, Japan
| | - Manabu Onuma
- Ecological Risk Assessment and Control Section for Environmental Biology and Ecosystem, Biology Division, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba 305-8506, Ibaraki, Japan
| | - Takahiro Hiono
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Kita 20, Nishi 11, Kita-ku, Sapporo 001-0020, Hokkaido, Japan
| | - Ivan Sobolev
- Institute of Virology of the Federal Research Center of Fundamental and Translational Medicine, Novosibirsk State University, Bild 2, Timakova St., Novosibirsk 630117, Russia
| | - Hew Yik Lim
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan
| | - Kei Nabeshima
- Ecological Risk Assessment and Control Section for Environmental Biology and Ecosystem, Biology Division, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba 305-8506, Ibaraki, Japan
| | - Hisako Honjyo
- Ecological Risk Assessment and Control Section for Environmental Biology and Ecosystem, Biology Division, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba 305-8506, Ibaraki, Japan
| | - Misako Yokoyama
- Ecological Risk Assessment and Control Section for Environmental Biology and Ecosystem, Biology Division, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba 305-8506, Ibaraki, Japan
| | - Alexander Shestopalov
- Institute of Virology of the Federal Research Center of Fundamental and Translational Medicine, Novosibirsk State University, Bild 2, Timakova St., Novosibirsk 630117, Russia
- Correspondence: (A.S.); (Y.S.); Tel./Fax: +7-383-335-9405 (A.S.); Tel.: +81-11-706-5207 (Y.S.); Fax: +81-11-706-5273 (Y.S.)
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Kita 20, Nishi 11, Kita-ku, Sapporo 001-0020, Hokkaido, Japan
- Correspondence: (A.S.); (Y.S.); Tel./Fax: +7-383-335-9405 (A.S.); Tel.: +81-11-706-5207 (Y.S.); Fax: +81-11-706-5273 (Y.S.)
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12
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Hien ND, Nguyen LT, Hoang LT, Bich NN, Quyen TM, Isoda N, Sakoda Y. First Report of a Complete Genome Sequence of a Variant African Swine Fever Virus in the Mekong Delta, Vietnam. Pathogens 2022; 11:pathogens11070797. [PMID: 35890041 PMCID: PMC9318516 DOI: 10.3390/pathogens11070797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/04/2022] [Accepted: 07/12/2022] [Indexed: 12/04/2022] Open
Abstract
The objective of this study is to report the complete-genome sequence of a field African swine fever (ASF) virus (ASFV), namely ASF/VN/CanTho-OM/2021, which caused a fatal outbreak in domestic pigs in the Mekong Delta. Complete-genome sequencing detected an 18 bp nucleotide deletion in the EP402R gene (encoding for serotype-specific proteins CD2v) of ASF/VN/CanTho-OM/2021, which was determined to belong to genotype 2 and serotype 8. This mutation pattern was confirmed as unique in GenBank; thus, ASF/VN/CanTho-OM/2021 can be considered a novel variant, with a potential change of sero-characteristics within genotype 2. An additional unique mutation of 78 bp nucleotide insertion was also observed in the B475L gene. Additionally, four copies of tandem repeat sequences were found in the intergenic region (IGR) located between I73R and I329L, previously assigned as the IGR III variant. This study is the first to report the complete genome of ASFV in the Mekong Delta, and it highlights the necessity of strengthening molecular surveillance to provide further knowledge on the evolution and incursion of ASFV in the Mekong Delta and Vietnam.
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Affiliation(s)
- Nguyen Duc Hien
- Department of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 Street, Ninh Kieu District, Can Tho 900000, Vietnam; (L.T.N.); (L.T.H.); (N.N.B.); (T.M.Q.)
- Can Tho Sub-Department of Animal Health, Ministry of Agriculture and Rural Development, 30/4 Street, Ninh Kieu District, Can Tho 900000, Vietnam
- Correspondence: (N.D.H.); (Y.S.); Tel.: +84-292-384-0371 (N.D.H.); +81-011-706-5207 (Y.S.); Fax: +84-292-384-037 (N.D.H.); +81-1-1706-5273 (Y.S.)
| | - Lam Thanh Nguyen
- Department of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 Street, Ninh Kieu District, Can Tho 900000, Vietnam; (L.T.N.); (L.T.H.); (N.N.B.); (T.M.Q.)
| | - Le Trung Hoang
- Department of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 Street, Ninh Kieu District, Can Tho 900000, Vietnam; (L.T.N.); (L.T.H.); (N.N.B.); (T.M.Q.)
- Can Tho Sub-Department of Animal Health, Ministry of Agriculture and Rural Development, 30/4 Street, Ninh Kieu District, Can Tho 900000, Vietnam
| | - Nguyen Ngoc Bich
- Department of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 Street, Ninh Kieu District, Can Tho 900000, Vietnam; (L.T.N.); (L.T.H.); (N.N.B.); (T.M.Q.)
| | - To My Quyen
- Department of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 Street, Ninh Kieu District, Can Tho 900000, Vietnam; (L.T.N.); (L.T.H.); (N.N.B.); (T.M.Q.)
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan;
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan;
- Correspondence: (N.D.H.); (Y.S.); Tel.: +84-292-384-0371 (N.D.H.); +81-011-706-5207 (Y.S.); Fax: +84-292-384-037 (N.D.H.); +81-1-1706-5273 (Y.S.)
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Nimako C, Ichise T, Hasegawa H, Akoto O, Boadi NO, Taira K, Fujioka K, Isoda N, Nakayama SMM, Ishizuka M, Ikenaka Y. Assessment of ameliorative effects of organic dietary interventions on neonicotinoid exposure rates in a Japanese population. Environ Int 2022; 162:107169. [PMID: 35289289 DOI: 10.1016/j.envint.2022.107169] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/24/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Neonicotinoid insecticides (NNIs) are a popular class of insecticides used in various pest management regimens worldwide. Biomonitoring studies continuously report high exposure rates of NNIs in various human populations across the globe. Yet, there is no validated countermeasure for combating the recent exponential rise in NNI exposure rates observed in human populations. The current study assessed the impacts of organic dietary interventions on NNI exposure rates in a Japanese population. A total of 103 volunteers were recruited into the study. Subjects were either served with Organic diets for 5 and 30 days or conventional diets. A total of 919 repeated urine samples were collected from the participants and then subjected to LC-MS/MS analysis to determine urinary concentrations of 7 NNIs parent compounds and an NNI metabolite. Eight NNIs were detected; with a decreasing detection frequency (%Dfs) pattern; desmethyl-acetamiprid (dm-ACE) (64.96%) > dinotefuran (52.12%), imidacloprid (39.61%) > clothianidin (33.95%) > thiamethoxam (28.51%) > acetamiprid (12.62%) > nitenpyram (5.33%) > thiacloprid (2.83%). Dinotefuran, dm-ACE, and clothianidin recorded the highest concentrations in the subjects. The %Df of NNIs in the 5-days or 30-days organic diet group were lower than those of the conventional diet consumers. The organic diet group showed lower rates of multiple NNI exposures than those of the conventional diet consumers. The mean and median cumulative levels of NNIs (median IMIeq) were significantly lower in the organic diet group than the conventional diet group (p < 0.0001). The estimated daily intakes (EDIs) of NNIs were higher in adults than children, but less than 1% of NNI cRfDs, except for clothianidin, which exhibited a %cRfD of 1.32 in children. Compared to the conventional diet group, the 5- and 30-day organic dietary intervention showed drastic reductions in NNI EDIs. Findings from the present study give credence to organic dietary interventions as potential ameliorative strategies for NNI exposure rates in human populations.
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Affiliation(s)
- Collins Nimako
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Takahiro Ichise
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Hiroshi Hasegawa
- Fukushima Organic Agriculture Network, 964-0871, 1-511 Narita Cho, Nihonmatsu, Fukushima, Japan
| | - Osei Akoto
- Chemistry Department, Kwame Nkrumah University of Science and Technology, Ghana
| | - Nathaniel O Boadi
- Chemistry Department, Kwame Nkrumah University of Science and Technology, Ghana
| | - Kumiko Taira
- Department of Anesthesiology, Adachi Medical Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Kazutoshi Fujioka
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, United States
| | - Norikazu Isoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Shouta M M Nakayama
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Mayumi Ishizuka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Yoshinori Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan; Water Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa; One Health Research Center, Hokkaido University, Hokkaido, Japan; Translational Research Unit, Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan.
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14
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Nishimori A, Hirose S, Ogino S, Andoh K, Isoda N, Sakoda Y. Endemic infections of bovine viral diarrhea virus genotypes 1b and 2a isolated from cattle in Japan between 2014 and 2020. J Vet Med Sci 2021; 84:228-232. [PMID: 34911882 PMCID: PMC8920713 DOI: 10.1292/jvms.21-0480] [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] [Indexed: 11/29/2022] Open
Abstract
Bovine viral diarrhea virus (BVDV) is a causative agent of bovine viral diarrhea. In
Japan, a previous study reported that subgenotype 1b viruses were predominant until 2014.
Because there is little information regarding the recent epidemiological status of BVDV
circulating in Japan, we performed genetic characterization of 909 BVDV isolates obtained
between 2014 and 2020. We found that 657 and 252 isolates were classified as BVDV-1 and
BVDV-2, respectively, and that they were further subdivided into 1a (35 isolates, 3.9%),
1b (588, 64.7%), 1c (34, 3.7%), and 2a (252, 27.7%). Phylogenetic analysis using entire E2
coding sequence revealed that a major domestic cluster in Japan among BVDV-1b and 2a
viruses were unchanged from a previous study conducted from 2006 to 2014. These results
provide updated information concerning the epidemic strain of BVDV in Japan, which would
be helpful for appropriate vaccine selection.
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Affiliation(s)
- Asami Nishimori
- National Institute of Animal Health, National Agriculture and Food Research Organization
| | - Shizuka Hirose
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University
| | - Saho Ogino
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University
| | - Kiyohiko Andoh
- National Institute of Animal Health, National Agriculture and Food Research Organization
| | - Norikazu Isoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University
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15
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Chonsin K, Changkwanyeun R, Siriphap A, Intarapuk A, Prapasawat W, Changkaew K, Pulsrikarn C, Isoda N, Nakajima C, Suzuki Y, Suthienkul O. Prevalence and Multidrug Resistance of Salmonella in Swine Production Chain in a Central Province, Thailand. J Food Prot 2021; 84:2174-2184. [PMID: 34410408 DOI: 10.4315/jfp-21-003] [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: 01/04/2021] [Accepted: 08/13/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT Salmonella causes foodborne disease outbreaks worldwide and raises concerns about public health and economic losses. To determine prevalence, serovar, antimicrobial resistance patterns, and the presence of extended-spectrum β-lactamase (ESBL) genes in a cross-sectional study, 418 total samples from feces and carcasses (from three slaughterhouses) and pork and cutting boards (from four markets) were collected in a central Thailand province in 2017 and 2018. Of the 418 samples, 272 (65.1%) were positive for Salmonella. The prevalence of Salmonella-positive samples from markets (158 of 178; 88.8%) was significantly higher than that among samples from slaughterhouses (114 of 240; 47.5%) (P < 0.05). A total of 1,030 isolates were identified; 409 were assigned to 45 serovars, with Salmonella Rissen the most common (82 of 409; 20%). Two serovars, Salmonella Cannstatt and Salmonella Braubach, were identified for the first time in Thailand in market and slaughterhouse samples, respectively. Among 180 isolates representing 19 serovars, 133 (73.9%) exhibited multidrug resistance. Screening for ESBL production revealed that 41 (10.3%) of 399 isolates were ESBL positive. The prevalence of ESBL-producing Salmonella isolates was significantly higher among the market isolates (31 of 41; 75.6%) than among the slaughterhouse isolates in (10 of 41; 24.4%) (P < 0.05). In market samples, 24 (77.4%) of 31 isolates were recovered from pork and 7 (22.6%) were recovered from cutting boards. Nine ESBL-producing isolates carried single ESBL genes, either blaTEM (4 of 41 isolates; 9.8%) or blaCTX-M (5 of 41 isolates; 12.2%), whereas 11 (26.8%) carried both blaTEM and blaCTX-M. No ESBL-producing Salmonella isolate carried the blaSHV gene. These results suggest that pigs, their flesh, and cutting boards used for processing pork could be reservoirs for widespread ESBL-producing Salmonella isolates with multidrug resistance and outbreak potential across the food chain. HIGHLIGHTS
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Affiliation(s)
- Kaknokrat Chonsin
- Faculty of Science and Technology, Suratthani Rajabhat University, Surat Thani 84100, Thailand
| | | | - Achiraya Siriphap
- Department of Microbiology and Parasitology, School of Medical Sciences, University of Phayao, Phayao 56000 Thailand
| | - Apiradee Intarapuk
- Department of Clinic, Faculty of Veterinary Medicine, Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Watsawan Prapasawat
- Department of Clinic, Faculty of Veterinary Medicine, Mahanakorn University of Technology, Bangkok 10530, Thailand
| | - Kanjana Changkaew
- Faculty of Public Health, Thammasart University, Pathum Thani 12121, Thailand
| | - Chaiwat Pulsrikarn
- National Institute of Health, Department of Medical Science, Ministry of Public Health, Nonthaburi 11000, Thailand
| | - Norikazu Isoda
- International Collaboration Unit, Hokkaido University International Institute for Zoonosis Control, Sapporo, Hokkaido 060-0808, Japan
| | - Chie Nakajima
- International Collaboration Unit, Hokkaido University International Institute for Zoonosis Control, Sapporo, Hokkaido 060-0808, Japan.,Division of Bioresources, Hokkaido University International Institute for Zoonosis Control, Sapporo, Hokkaido 001-0020, Japan
| | - Yasuhiko Suzuki
- International Collaboration Unit, Hokkaido University International Institute for Zoonosis Control, Sapporo, Hokkaido 060-0808, Japan.,Division of Bioresources, Hokkaido University International Institute for Zoonosis Control, Sapporo, Hokkaido 001-0020, Japan
| | - Orasa Suthienkul
- Faculty of Public Health, Thammasart University, Pathum Thani 12121, Thailand.,Faculty of Public Health, Mahidol University, Bangkok 10400, Thailand
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16
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Zorigt T, Ito S, Isoda N, Furuta Y, Shawa M, Norov N, Lkham B, Enkhtuya J, Higashi H. Risk factors and spatio-temporal patterns of livestock anthrax in Khuvsgul Province, Mongolia. PLoS One 2021; 16:e0260299. [PMID: 34797889 PMCID: PMC8604359 DOI: 10.1371/journal.pone.0260299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 11/07/2021] [Indexed: 11/18/2022] Open
Abstract
Anthrax is a worldwide zoonotic disease. Anthrax has long been a public health and socio-economic issue in Mongolia. Presently, there is no spatial information on carcass burial sites as a potential hazard of future anthrax outbreaks and possible risk factors associated with anthrax occurrences in Mongolia. Here, we analyze retrospective data (1986-2015) on the disposal sites of livestock carcasses to describe historical spatio-temporal patterns of livestock anthrax in Khuvsgul Province, which showed the highest anthrax incidence rate in Mongolia. From the results of spatial mean and standard deviational ellipse analyses, we found that the anthrax spatial distribution in livestock did not change over the study period, indicating a localized source of exposure. The multi-distance spatial cluster analysis showed that carcass sites distributed in the study area are clustered. Using kernel density estimation analysis on carcass sites, we identified two anthrax hotspots in low-lying areas around the south and north regions. Notably, this study disclosed a new hotspot in the northern part that emerged in the last decade of the 30-year study period. The highest proportion of cases was recorded in cattle, whose prevalence per area was highest in six districts (i.e., Murun, Chandmani-Undur, Khatgal, Ikh-Uul, Tosontsengel, and Tsagaan-Uul), suggesting that vaccination should prioritize cattle in these districts. Furthermore, size of outbreaks was influenced by the annual summer mean air temperature of Khuvsgul Province, probably by affecting the permafrost freeze-thawing activity.
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Affiliation(s)
- Tuvshinzaya Zorigt
- Division of Infection and Immunity, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Satoshi Ito
- Unit of Risk Analysis and Management, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Norikazu Isoda
- Laboratory of Microbiology, School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yoshikazu Furuta
- Division of Infection and Immunity, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Misheck Shawa
- Division of Infection and Immunity, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Natsagdorj Norov
- Division of Quality Management and Coordination, Mongolian University of Life Sciences, Ulaanbaatar, Mongolia
| | - Baasansuren Lkham
- Laboratory of Infectious Disease and Immunology, Institute of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar, Mongolia
| | - Jargalsaikhan Enkhtuya
- Laboratory of Food Safety and Hygiene, Institute of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar, Mongolia
| | - Hideaki Higashi
- Division of Infection and Immunity, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
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17
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Le KT, Stevenson MA, Isoda N, Nguyen LT, Chu DH, Nguyen TN, Nguyen LV, Tien TN, Le TT, Matsuno K, Okamatsu M, Sakoda Y. A systematic approach to illuminate a new hot spot of avian influenza virus circulation in South Vietnam, 2016-2017. Transbound Emerg Dis 2021; 69:e831-e844. [PMID: 34734678 DOI: 10.1111/tbed.14380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 03/30/2021] [Accepted: 10/16/2021] [Indexed: 11/27/2022]
Abstract
In South Vietnam, live bird markets (LBMs) are key in the value chain of poultry products and spread of avian influenza virus (AIV) although they may not be the sole determinant of AIV prevalence. For this reason, a risk analysis of AIV prevalence was conducted accounting for all value chain factors. A cross-sectional study of poultry flock managers and poultry on backyard farms, commercial (high biosecurity) farms, LBMs and poultry delivery stations (PDSs) in four districts of Vinh Long province was conducted between December 2016 and August 2017. A total of 3597 swab samples were collected from birds from 101 backyard farms, 50 commercial farms, 58 sellers in LBMs and 19 traders in PDSs. Swab samples were submitted for AIV isolation. At the same time a questionnaire was administered to flock managers asking them to provide details of their knowledge, attitude and practices related to avian influenza. Multiple correspondence analysis and a mixed-effects multivariable logistic regression model were developed to identify enterprise and flock manager characteristics that increased the risk of AIV positivity. A total of 274 birds were positive for AIV isolation, returning an estimated true prevalence of 7.6% [95% confidence interval (CI): 6.8%-8.5%]. The odds of a bird being AIV positive if it was from an LBM or PDS were 45 (95% CI: 3.4-590) and 25 (95% CI: 1.4-460), respectively, times higher to the odds of a bird from a commercial poultry farm being AIV positive. The odds of birds being AIV positive for respondents with a mixed (uncertain or inconsistent) level and a low level of knowledge about AI were 5.0 (95% CI: 0.20-130) and 3.5 (95% CI: 0.2-62), respectively, times higher to the odd of birds being positive for respondents with a good knowledge of AI. LBMs and PDSs should receive specific emphasis in AI control programs in Vietnam. Our findings provide evidence to support the hypothesis that incomplete respondent knowledge of AI and AIV spread mechanism were associated with an increased risk of AIV positivity. Delivery of education programs specifically designed for those in each enterprise will assist in this regard. The timing and frequency of delivery of education programs are likely to be important if the turnover of those working in LBMs and PDSs is high.
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Affiliation(s)
- Kien Trung Le
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Mark A Stevenson
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Norikazu Isoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.,Division of Risk Analysis and Management, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan.,International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Lam Thanh Nguyen
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.,Department of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho, Vietnam
| | - Duc-Huy Chu
- Department of Animal Health, Ministry of Agriculture and Rural Development, Ha Noi, Vietnam
| | - Tien Ngoc Nguyen
- Department of Animal Health, Ministry of Agriculture and Rural Development, Ha Noi, Vietnam
| | - Long Van Nguyen
- Department of Animal Health, Ministry of Agriculture and Rural Development, Ha Noi, Vietnam
| | - Tien Ngoc Tien
- Regional Animal Health Office VII, Department of Animal Health, Ministry of Agriculture and Rural Development, Can Tho, Vietnam
| | - Tung Thanh Le
- Sub-Departments of Animal Health, Ministry of Agriculture and Rural Development, Vinh Long, Vietnam
| | - Keita Matsuno
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.,International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.,International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan
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18
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Zorigt T, Furuta Y, Simbotwe M, Ochi A, Tsujinouchi M, Shawa M, Shimizu T, Isoda N, Enkhtuya J, Higashi H. Development of ELISA based on Bacillus anthracis capsule biosynthesis protein CapA for naturally acquired antibodies against anthrax. PLoS One 2021; 16:e0258317. [PMID: 34634075 PMCID: PMC8504768 DOI: 10.1371/journal.pone.0258317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/23/2021] [Indexed: 11/30/2022] Open
Abstract
Anthrax is a zoonotic disease caused by the gram-positive spore-forming bacterium Bacillus anthracis. Detecting naturally acquired antibodies against anthrax sublethal exposure in animals is essential for anthrax surveillance and effective control measures. Serological assays based on protective antigen (PA) of B. anthracis are mainly used for anthrax surveillance and vaccine evaluation. Although the assay is reliable, it is challenging to distinguish the naturally acquired antibodies from vaccine-induced immunity in animals because PA is cross-reactive to both antibodies. Although additional data on the vaccination history of animals could bypass this problem, such data are not readily accessible in many cases. In this study, we established a new enzyme-linked immunosorbent assay (ELISA) specific to antibodies against capsule biosynthesis protein CapA antigen of B. anthracis, which is non-cross-reactive to vaccine-induced antibodies in horses. Using in silico analyses, we screened coding sequences encoded on pXO2 plasmid, which is absent in the veterinary vaccine strain Sterne 34F2 but present in virulent strains of B. anthracis. Among the 8 selected antigen candidates, capsule biosynthesis protein CapA (GBAA_RS28240) and peptide ABC transporter substrate-binding protein (GBAA_RS28340) were detected by antibodies in infected horse sera. Of these, CapA has not yet been identified as immunoreactive in other studies to the best of our knowledge. Considering the protein solubility and specificity of B. anthracis, we prepared the C-terminus region of CapA, named CapA322, and developed CapA322-ELISA based on a horse model. Comparative analysis of the CapA322-ELISA and PAD1-ELISA (ELISA uses domain one of the PA) showed that CapA322-ELISA could detect anti-CapA antibodies in sera from infected horses but was non-reactive to sera from vaccinated horses. The CapA322-ELISA could contribute to the anthrax surveillance in endemic areas, and two immunoreactive proteins identified in this study could be additives to the improvement of current or future vaccine development.
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Affiliation(s)
- Tuvshinzaya Zorigt
- Division of Infection and Immunity, International Institute for Zoonosis Control (Former Research Center for Zoonosis Control), Hokkaido University, Sapporo, Japan
- Graduate School of Infectious Diseases, School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yoshikazu Furuta
- Division of Infection and Immunity, International Institute for Zoonosis Control (Former Research Center for Zoonosis Control), Hokkaido University, Sapporo, Japan
- Graduate School of Infectious Diseases, School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Manyando Simbotwe
- Division of Infection and Immunity, International Institute for Zoonosis Control (Former Research Center for Zoonosis Control), Hokkaido University, Sapporo, Japan
| | - Akihiro Ochi
- Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan
| | - Mai Tsujinouchi
- Division of Infection and Immunity, International Institute for Zoonosis Control (Former Research Center for Zoonosis Control), Hokkaido University, Sapporo, Japan
| | - Misheck Shawa
- Division of Infection and Immunity, International Institute for Zoonosis Control (Former Research Center for Zoonosis Control), Hokkaido University, Sapporo, Japan
- Graduate School of Infectious Diseases, School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Tomoko Shimizu
- Division of Infection and Immunity, International Institute for Zoonosis Control (Former Research Center for Zoonosis Control), Hokkaido University, Sapporo, Japan
| | - Norikazu Isoda
- Laboratory of Microbiology, School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | | | - Hideaki Higashi
- Division of Infection and Immunity, International Institute for Zoonosis Control (Former Research Center for Zoonosis Control), Hokkaido University, Sapporo, Japan
- Graduate School of Infectious Diseases, School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- * E-mail:
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19
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Kaneko C, Sasaki M, Omori R, Nakao R, Kataoka-Nakamura C, Moonga L, Ndebe J, Muleya W, Simulundu E, Hang’ombe BM, Dautu G, Kajihara M, Mori-Kajihara A, Qiu Y, Ito N, Chambaro HM, Sugimoto C, Higashi H, Takada A, Sawa H, Mweene AS, Isoda N. Immunization Coverage and Antibody Retention against Rabies in Domestic Dogs in Lusaka District, Zambia. Pathogens 2021; 10:738. [PMID: 34208340 PMCID: PMC8231269 DOI: 10.3390/pathogens10060738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 12/25/2022] Open
Abstract
Rabies remains endemic in Zambia. Despite conducting canine vaccinations in Lusaka district, the vaccination coverage and actual seropositivity in the dog population in Lusaka district are rarely evaluated. This study estimated the seropositivity-based immunization coverage in the owned dog population in Lusaka district using the expanded program on immunization cluster survey method. The time-series trend of neutralizing antibodies against rabies in vaccinated dogs was also evaluated. Of 366 dogs in 200 dog-owning households in Lusaka district, blood samples were collected successfully from 251 dogs. In the sampled dogs, 42.2% (106/251) had an antibody titer ≥0.5 IU/mL. When the 115 dogs whose blood was not collected were assumed to be seronegative, the minimum immunization coverage in Lusaka district's owned dog population was estimated at 29.0% (95% confidence interval: 22.4-35.5). It was also found that a single vaccination with certified vaccines is capable of inducing protective levels of antibodies. In contrast, higher antibody titers were observed in multiple-vaccinated dogs than in single-vaccinated dogs, coupled with the observation of a decline in antibody titer over time. These results suggest the importance of continuous booster immunization to maintain herd immunity and provide useful information to plan mass vaccination against rabies in Zambia.
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Affiliation(s)
- Chiho Kaneko
- Unit of Risk Analysis and Management, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (C.K.); (C.K.-N.)
| | - Michihito Sasaki
- Division of Molecular Pathobiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.S.); (H.M.C.); (H.S.)
| | - Ryosuke Omori
- Division of Bioinformatics, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan;
| | - Ryo Nakao
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, North 18, West 9, Kita-ku, Sapporo 060-0818, Hokkaido, Japan;
| | - Chikako Kataoka-Nakamura
- Unit of Risk Analysis and Management, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (C.K.); (C.K.-N.)
| | - Ladslav Moonga
- Department of Para-Clinical Studies, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (L.M.); (B.M.H.)
| | - Joseph Ndebe
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
| | - Walter Muleya
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia;
| | - Edgar Simulundu
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
- Macha Research Trust, Choma 20100, Zambia
| | - Bernard M. Hang’ombe
- Department of Para-Clinical Studies, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (L.M.); (B.M.H.)
| | - George Dautu
- Virology Unit, Central Veterinary Research Institute, P.O. Box 33980, Lusaka 10101, Zambia;
- Ministry of Fisheries and Livestock, P.O. Box 50060, Lusaka 10101, Zambia
| | - Masahiro Kajihara
- Division of Global Epidemiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.K.); (A.M.-K.)
| | - Akina Mori-Kajihara
- Division of Global Epidemiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.K.); (A.M.-K.)
| | - Yongjin Qiu
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University International Institute for Zoonosis Control, P.O. Box 32379, Lusaka 10101, Zambia; (Y.Q.); (H.H.)
| | - Naoto Ito
- Laboratory of Zoonotic Diseases, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Gifu Prefecture, Japan;
| | - Herman M. Chambaro
- Division of Molecular Pathobiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.S.); (H.M.C.); (H.S.)
- Virology Unit, Central Veterinary Research Institute, P.O. Box 33980, Lusaka 10101, Zambia;
- Ministry of Fisheries and Livestock, P.O. Box 50060, Lusaka 10101, Zambia
| | - Chihiro Sugimoto
- Division of Collaboration and Education, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan;
| | - Hideaki Higashi
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University International Institute for Zoonosis Control, P.O. Box 32379, Lusaka 10101, Zambia; (Y.Q.); (H.H.)
- Division of Infection and Immunity, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan
| | - Ayato Takada
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
- Division of Global Epidemiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.K.); (A.M.-K.)
| | - Hirofumi Sawa
- Division of Molecular Pathobiology, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (M.S.); (H.M.C.); (H.S.)
| | - Aaron S. Mweene
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.N.); (E.S.); (A.T.); (A.S.M.)
| | - Norikazu Isoda
- Unit of Risk Analysis and Management, Hokkaido University International Institute for Zoonosis Control, North 20, West 10, Kita-ku, Sapporo 001-0020, Hokkaido, Japan; (C.K.); (C.K.-N.)
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20
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Kaneko C, Omori R, Sasaki M, Kataoka-Nakamura C, Simulundu E, Muleya W, Moonga L, Ndebe J, Hang’ombe BM, Dautu G, Qiu Y, Nakao R, Kajihara M, Mori-Kajihara A, Chambaro HM, Higashi H, Sugimoto C, Sawa H, Mweene AS, Takada A, Isoda N. Domestic dog demographics and estimates of canine vaccination coverage in a rural area of Zambia for the elimination of rabies. PLoS Negl Trop Dis 2021; 15:e0009222. [PMID: 33909621 PMCID: PMC8081203 DOI: 10.1371/journal.pntd.0009222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/07/2021] [Indexed: 12/25/2022] Open
Abstract
Background An estimated 75% or more of the human rabies cases in Africa occur in rural settings, which underscores the importance of rabies control in these areas. Understanding dog demographics can help design strategies for rabies control and plan and conduct canine mass vaccination campaigns effectively in African countries. Methodology/Principal findings A cross-sectional survey was conducted to investigate domestic dog demographics in Kalambabakali, in the rural Mazabuka District of Zambia. The population of ownerless dogs and the total achievable vaccination coverage among the total dog population was estimated using the capture-recapture-based Bayesian model by conducting a canine mass vaccination campaign. This study revealed that 29% of the domestic dog population was under one year old, and 57.7% of those were under three months old and thus were not eligible for the canine rabies vaccination in Zambia. The population growth was estimated at 15% per annum based on the cross-sectional household survey. The population of ownerless dogs was estimated to be small, with an ownerless-to-owned-dog ratio of 0.01–0.06 in the target zones. The achieved overall vaccination coverage from the first mass vaccination was estimated 19.8–51.6%. This low coverage was principally attributed to the owners’ lack of information, unavailability, and dog-handling difficulties. The follow-up mass vaccination campaign achieved an overall coverage of 54.8–76.2%. Conclusions/Significance This paper indicates the potential for controlling canine rabies through mass vaccination in rural Zambia. Rabies education and responsible dog ownership are required to achieve high and sustainable vaccination coverage. Our findings also propose including puppies below three months old in the target population for rabies vaccination and emphasize that securing an annual enforcement of canine mass vaccination that reaches 70% coverage in the dog population is necessary to maintain protective herd immunity. Because dogs are the main transmitter of rabies to humans, controlling rabies in dogs is essential for preventing rabies in humans. Canine vaccination is well-known as the most effective measure for controlling rabies in dogs. Understanding the demographics and dynamics of dog populations is important when designing efficient canine vaccination strategies. Furthermore, protective herd immunity in the total dog population should be attained through the vaccination of owned dogs since ownerless dogs are not usually covered in such campaigns. This study investigated domestic dog demographics and estimated the number of ownerless dogs to finally estimate the vaccination coverage among the overall dog population achievable through a mass vaccination campaign in a rural setting in Mazabuka District, Zambia. The target domestic dog population was young, and population growth was estimated at 15% annually based on the cross-sectional survey. The vaccination coverage attained by providing free canine mass vaccination campaigns was eventually estimated as 54.8–76.2% in the overall dog population, coupled with the estimate that the ownerless dog population was quite small. Our findings emphasize the necessity of conducting annual canine mass vaccinations, including puppies, that target 70% coverage in the dog population to maintain protective herd immunity.
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Affiliation(s)
- Chiho Kaneko
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Ryosuke Omori
- Division of Bioinformatics, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Michihito Sasaki
- Division of Molecular Pathobiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Chikako Kataoka-Nakamura
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Edgar Simulundu
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
- Macha Research Trust, Choma, Zambia
| | - Walter Muleya
- Department of Biomedical Sciences, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Ladslav Moonga
- Department of Para-Clinical Studies, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Joseph Ndebe
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Bernard M. Hang’ombe
- Department of Para-Clinical Studies, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - George Dautu
- Virology Unit, Central Veterinary Research Institute, Lusaka, Zambia
- Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Yongjin Qiu
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Ryo Nakao
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Masahiro Kajihara
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Akina Mori-Kajihara
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Herman M. Chambaro
- Division of Molecular Pathobiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
- Virology Unit, Central Veterinary Research Institute, Lusaka, Zambia
- Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Hideaki Higashi
- Hokudai Center for Zoonosis Control in Zambia, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
- Division of Infection and Immunity, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Chihiro Sugimoto
- Division of Collaboration and Education, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Hirofumi Sawa
- Division of Molecular Pathobiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Aaron S. Mweene
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
| | - Ayato Takada
- Department of Disease Control, School of Veterinary Medicine, The University of Zambia, Lusaka, Zambia
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
| | - Norikazu Isoda
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido, Japan
- * E-mail:
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21
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Bazarragchaa E, Isoda N, Kim T, Tetsuo M, Ito S, Matsuno K, Sakoda Y. Efficacy of Oral Vaccine against Classical Swine Fever in Wild Boar and Estimation of the Disease Dynamics in the Quantitative Approach. Viruses 2021; 13:v13020319. [PMID: 33672749 PMCID: PMC7924559 DOI: 10.3390/v13020319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/31/2020] [Revised: 02/09/2021] [Accepted: 02/18/2021] [Indexed: 11/16/2022] Open
Abstract
Classical swine fever virus (CSFV) in the wild boar population has been spreading in Japan, alongside outbreaks on pigs, since classical swine fever (CSF) reemerged in September 2018. The vaccination using oral bait vaccine was initially implemented in Gifu prefecture in March 2019. In the present study, antibodies against CSFV in wild boar were assessed in 1443 captured and dead wild boars in Gifu prefecture. After the implementation of oral vaccination, the increase of the proportion of seropositive animals and their titer in wild boars were confirmed. Quantitative analysis of antigen and antibodies against CSFV in wild boar implies potential disease diversity in the wild boar population. Animals with status in high virus replication (Ct < 30) and non- or low-immune response were confirmed and were sustained at a certain level after initial oral vaccination. Through continuous vaccination periods, the increase of seroprevalence among wild boar and the decrease of CSFV-positive animals were observed. The epidemiological analysis based on the quantitative virological outcomes could provide more information on the efficacy of oral vaccination and dynamics of CSF in the wild boar population, which will help to improve the implementation of control measures for CSF in countries such as Japan and neighboring countries.
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Affiliation(s)
- Enkhbold Bazarragchaa
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Hokkaido, Japan; (E.B.); (T.K.); (M.T.)
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Hokkaido, Japan; (E.B.); (T.K.); (M.T.)
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo 001-0020, Hokkaido, Japan; (S.I.); (K.M.)
- Correspondence: (N.I.); (Y.S.); Tel.: +81-11-706-5208 (N.I.); +81-11-706-5207 (Y.S.)
| | - Taksoo Kim
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Hokkaido, Japan; (E.B.); (T.K.); (M.T.)
| | - Madoka Tetsuo
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Hokkaido, Japan; (E.B.); (T.K.); (M.T.)
| | - Satoshi Ito
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo 001-0020, Hokkaido, Japan; (S.I.); (K.M.)
| | - Keita Matsuno
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo 001-0020, Hokkaido, Japan; (S.I.); (K.M.)
- International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo 001-0020, Hokkaido, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Hokkaido, Japan; (E.B.); (T.K.); (M.T.)
- International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo 001-0020, Hokkaido, Japan
- Correspondence: (N.I.); (Y.S.); Tel.: +81-11-706-5208 (N.I.); +81-11-706-5207 (Y.S.)
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22
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Hayashi H, Isoda N, Bazarragchaa E, Nomura N, Matsuno K, Okamatsu M, Kida H, Sakoda Y. Potency of an Inactivated Influenza Vaccine against a Challenge with A/Swine/Missouri/A01727926/2015 (H4N6) in Mice for Pandemic Preparedness. Vaccines (Basel) 2020; 8:vaccines8040768. [PMID: 33339174 PMCID: PMC7765658 DOI: 10.3390/vaccines8040768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/05/2022] Open
Abstract
H4 influenza viruses have been isolated from birds across the world. In recent years, an H4 influenza virus infection has been confirmed in pigs. Pigs play an important role in the transmission of influenza viruses to human hosts. Therefore, it is important to develop a new vaccine in the case of an H4 influenza virus infection in humans, considering that this virus has a different antigenicity from seasonal human influenza viruses. In this study, after selecting vaccine candidate strains based on their antigenic relation to one of the pig isolates, A/swine/Missouri/A01727926/2015 (H4N6) (MO/15), an inactivated whole-particle vaccine was prepared from A/swan/Hokkaido/481102/2017 (H4N6). This vaccine showed high immunogenicity in mice, and the antibody induced by the vaccine showed high cross-reactivity to the MO/15 virus. This vaccine induced sufficient neutralizing antibodies and mitigated the effects of an MO/15 infection in a mouse model. This study is the first to suggest that an inactivated whole-particle vaccine prepared from an influenza virus isolated from wild birds is an effective countermeasure in case of a future influenza pandemic caused by the H4 influenza virus.
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Affiliation(s)
- Hirotaka Hayashi
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-Ku, Sapporo 060-0818, Japan; (H.H.); (N.I.); (E.B.); (K.M.); (M.O.)
| | - Norikazu Isoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-Ku, Sapporo 060-0818, Japan; (H.H.); (N.I.); (E.B.); (K.M.); (M.O.)
- International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Japan
| | - Enkhbold Bazarragchaa
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-Ku, Sapporo 060-0818, Japan; (H.H.); (N.I.); (E.B.); (K.M.); (M.O.)
| | - Naoki Nomura
- Laboratory of Biologics Development, Research Center for Zoonosis Control, Hokkaido University, Kita 20 Nishi 10, Kita-Ku, Sapporo 001-0020, Japan;
| | - Keita Matsuno
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-Ku, Sapporo 060-0818, Japan; (H.H.); (N.I.); (E.B.); (K.M.); (M.O.)
- International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-Ku, Sapporo 060-0818, Japan; (H.H.); (N.I.); (E.B.); (K.M.); (M.O.)
| | - Hiroshi Kida
- Research Center for Zoonosis Control, Hokkaido University, Kita 20 Nishi 10, Kita-Ku, Sapporo 001-0020, Japan;
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-Ku, Sapporo 060-0818, Japan; (H.H.); (N.I.); (E.B.); (K.M.); (M.O.)
- International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Japan
- Correspondence: ; Tel.: +81-11-706-5207; Fax: +81-11-706-5273
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Twabela A, Okamatsu M, Matsuno K, Isoda N, Sakoda Y. Evaluation of Baloxavir Marboxil and Peramivir for the Treatment of High Pathogenicity Avian Influenza in Chickens. Viruses 2020; 12:v12121407. [PMID: 33302389 PMCID: PMC7762593 DOI: 10.3390/v12121407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 11/11/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 11/16/2022] Open
Abstract
Control measures in the case of high pathogenicity avian influenza (HPAI) outbreaks in poultry include culling, surveillance, and biosecurity; wild birds in captivity may also be culled, although some rare bird species should be rescued for conservation. In this study, two anti-influenza drugs, baloxavir marboxil (BXM) and peramivir (PR), used in humans, were examined in treating HPAI in birds, using chickens as a model. Chickens were infected with H5N6 HPAI virus and were treated immediately or 24 h from challenge with 20 mg/kg BXM or PR twice a day for five days. As per our findings, BXM significantly reduced virus replication in organs and provided full protection to chickens compared with that induced by PR. In the 24-h-delayed treatment, neither drug completely inhibited virus replication nor ensured the survival of infected chickens. A single administration of 2.5 mg/kg of BXM was determined as the minimum dose required to fully protect chickens from HPAI virus; the concentration of baloxavir acid, the active form of BXM, in chicken blood at this dose was sufficient for a 48 h antiviral effect post-administration. Thus, these data can be a starting point for the use of BXM and PR in treating captive wild birds infected with HPAI virus.
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Affiliation(s)
- Augustin Twabela
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan; (A.T.); (M.O.); (N.I.)
- Virology Service, Central Veterinary Laboratory of Kinshasa, Ministry of Fisheries and Livestock, Kinshasa I/Gombe 012, Democratic Republic of the Congo
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan; (A.T.); (M.O.); (N.I.)
| | - Keita Matsuno
- International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Sapporo 011-0020, Japan;
- Unit of Risk Analysis and Management, Research Center for Zoonotic Control, Hokkaido University, Sapporo 011-0020, Japan
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan; (A.T.); (M.O.); (N.I.)
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan; (A.T.); (M.O.); (N.I.)
- International Collaboration Unit, Research Center for Zoonosis Control, Hokkaido University, Sapporo 011-0020, Japan;
- Correspondence: ; Tel.: +81-1-1706-5207; Fax: +81-1-1706-5273
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24
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Shah Y, Poudel A, Maharjan B, Thapa J, Yamaguchi T, Diab HM, Pandey BD, Solo E, Isoda N, Suzuki Y, Nakajima C. Genetic diversity of Mycobacterium tuberculosis Central Asian Strain isolates from Nepal and comparison with neighboring countries. Trans R Soc Trop Med Hyg 2020; 113:203-211. [PMID: 30668857 DOI: 10.1093/trstmh/try136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 10/31/2018] [Accepted: 12/04/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Multidrug-resistant tuberculosis (MDR-TB) is an emerging threat for successful tuberculosis control worldwide. Central Asian Strain (CAS) has been reported as one of the dominant families contributing to MDR-TB in South Asia including Nepal, India and Pakistan. The aim of this study was to better understand the genetic characteristics of MDR-TB CAS family isolates circulating in Nepal and compare the results with neighboring countries. METHODS A total of 145 MDR-TB CAS family isolates collected in Nepal from 2008 to 2013 were analyzed by spoligotyping and mycobacterial interspersed repetitive units-variable number of tandem repeats (MIRU-VNTR) analysis. In addition, we compared these data with published data from India and Pakistan to investigate a possible epidemiological link via construction of a minimum spanning tree (MST). RESULTS Spoligotyping analysis exhibited CAS1_Delhi SIT26 (n=60) as the predominant lineage among the MDR-TB CAS family in all three countries. However, the combined analysis with spoligotyping and MIRU-VNTR further discriminated 60 isolates into 49 different types and 5 clusters. Each cluster was composed of 14 isolates with a clustering rate of 23.3%, suggesting ongoing transmissions. Based on MST data from neighboring countries, we elucidated an evolutionary relationship between the two countries, Nepal and India, which could be explained by their open border. CONCLUSION This study identified the evolutionary relationships among MDR-TB CAS1_Delhi subfamily isolates from Nepal and those from neighboring countries.
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Affiliation(s)
- Yogendra Shah
- National Zoonoses and Food Hygiene Research Centre, Kathmandu, Nepal
| | - Ajay Poudel
- Chitwan Medical College and Teaching Hospital, Department of Microbiology, Bharatpur, Chitwan, Nepal
| | - Bhagwan Maharjan
- German Nepal Tuberculosis Project, Nepal anti-Tuberculosis association/GENETUP, Kalimati, Kathmandu, Nepal.,Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan
| | - Jeewan Thapa
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan
| | - Tomoyuki Yamaguchi
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan
| | - Hassan Mahmoud Diab
- Department of Animal Hygiene, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Basu Dev Pandey
- Sukraraj Tropical and Infectious Disease Hospital, Teku, Kathmandu, Nepal.,Everest International Clinic and Research Center, Kathmandu, Nepal
| | - Eddie Solo
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,University Teaching Hospital, Lusaka, Zambia
| | - Norikazu Isoda
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,Hokkaido University, GI-CoRE Global Station for Zoonosis Control, Sapporo, Japan
| | - Yasuhiko Suzuki
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,Hokkaido University, GI-CoRE Global Station for Zoonosis Control, Sapporo, Japan
| | - Chie Nakajima
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,Hokkaido University, GI-CoRE Global Station for Zoonosis Control, Sapporo, Japan
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25
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Isoda N, Baba K, Ito S, Ito M, Sakoda Y, Makita K. Dynamics of Classical Swine Fever Spread in Wild Boar in 2018-2019, Japan. Pathogens 2020; 9:pathogens9020119. [PMID: 32069897 PMCID: PMC7169391 DOI: 10.3390/pathogens9020119] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [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: 01/22/2020] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 11/16/2022] Open
Abstract
The prolongation of the classic swine fever (CSF) outbreak in Japan in 2018 was highly associated with the persistence and widespread of the CSF virus (CSFV) in the wild boar population. To investigate the dynamics of the CSF outbreak in wild boar, spatiotemporal analyses were performed. The positive rate of CSFV in wild boar fluctuated dramatically from March to June 2019, but finally stabilized at approximately 10%. The Euclidean distance from the initial CSF notified farm to the farthest infected wild boar of the day constantly increased over time since the initial outbreak except in the cases reported from Gunma and Saitama prefectures. The two-month-period prevalence, estimated using integrated nested Laplace approximation, reached >80% in half of the infected areas in March–April 2019. The area affected continued to expand despite the period prevalence decreasing up to October 2019. A large difference in the shapes of standard deviational ellipses and in the location of their centroids when including or excluding cases in Gunma and Saitama prefectures indicates that infections there were unlikely to have been caused simply by wild boar activities, and anthropogenic factors were likely involved. The emergence of concurrent space–time clusters in these areas after July 2019 indicated that CSF outbreaks were scattered by this point in time. The results of this epidemiological analysis help explain the dynamics of the spread of CSF and will aid in the implementation of control measures, including bait vaccination.
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Affiliation(s)
- Norikazu Isoda
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo 001-0020, Japan; (N.I.); (S.I.)
- Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 001-0020, Japan;
| | - Kairi Baba
- Veterinary Epidemiology Unit, School of Veterinary Medicine, Rakuno Gakuen University, 582, Bunkyodai Midorimachi, Ebetsu 069-8501, Japan;
| | - Satoshi Ito
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo 001-0020, Japan; (N.I.); (S.I.)
| | - Mitsugi Ito
- Akabane Animal Clinic, Co. Ltd., 55 Ishizoe, Akabane-Cho, Tahara 441-3502, Japan;
| | - Yoshihiro Sakoda
- Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 001-0020, Japan;
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-Ku, Sapporo 060-0818, Japan
| | - Kohei Makita
- Veterinary Epidemiology Unit, School of Veterinary Medicine, Rakuno Gakuen University, 582, Bunkyodai Midorimachi, Ebetsu 069-8501, Japan;
- Correspondence: ; Tel.: +81-11-388-4761
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26
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Ito S, Jurado C, Sánchez-Vizcaíno JM, Isoda N. Quantitative risk assessment of African swine fever virus introduction to Japan via pork products brought in air passengers' luggage. Transbound Emerg Dis 2019; 67:894-905. [PMID: 31692238 DOI: 10.1111/tbed.13414] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 05/31/2019] [Revised: 10/02/2019] [Accepted: 10/27/2019] [Indexed: 11/30/2022]
Abstract
The spread of African swine fever (ASF) has reached pandemic levels over the last decade, and outbreaks of this disease in China, Mongolia, Vietnam and Cambodia in 2018 and 2019 could accelerate its transmission to neighbouring Asian territories. Thus, the risk that the ASF virus (ASFV) will be introduced to disease-free territories increases each year. Since Japan is an island nation, the most likely way in which ASFV would be introduced is via pork products brought in air passengers' luggage (PPAP). Therefore, in the present study, we assessed the risk of ASFV introduction to Japan via PPAP. For the purposes of this analysis, we considered 214 international commercial flights travelling from 47 origin territories to 31 destination airports as potential routes of ASFV introduction via PPAP. The risk was estimated quantitatively through a stochastic model that considered the volume of air passengers' luggage, the amount of confiscated pork products that were carried in air passengers' luggage and the disease status of the origin territory. The overall mean annual probability of ASFV introduction to Japan via PPAP was found to be 0.941 [95% confidence interval (CI), 0.661-1.000], which approximately corresponds to one introduction every 1.06 years. At the origin territory level, Mongolia was led as the highest risk territory, with a risk of 0.864 (95% CI, 0.434-1.000), followed by China (0.697; 0.223-0.999), Vietnam (0.662; 0.196-0.998) and the Russian Federation (0.136; 0.018-0.401). At the destination airport level, Narita International Airport had the highest risk (0.905; 0.537-1.000), followed by Kansai International Airport (0.496; 0.109-0.961), Tokyo International Airport (0.389; 0.072-0.879) and Chubu Centrair International Airport (0.338; 0.058-0.816). This information will help improve risk management activities and monitoring systems to prevent the introduction of ASFV to Japan.
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Affiliation(s)
- Satoshi Ito
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.,VISAVET Center and Animal Health Department, University Complutense of Madrid, Madrid, Spain
| | - Cristina Jurado
- VISAVET Center and Animal Health Department, University Complutense of Madrid, Madrid, Spain
| | | | - Norikazu Isoda
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.,Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
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27
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Ito S, Jurado C, Bosch J, Ito M, Sánchez-Vizcaíno JM, Isoda N, Sakoda Y. Role of Wild Boar in the Spread of Classical Swine Fever in Japan. Pathogens 2019; 8:pathogens8040206. [PMID: 31653072 PMCID: PMC6963481 DOI: 10.3390/pathogens8040206] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/21/2019] [Accepted: 10/22/2019] [Indexed: 11/21/2022] Open
Abstract
Since September 2018, nearly 900 notifications of classical swine fever (CSF) have been reported in Gifu Prefecture (Japan) affecting domestic pig and wild boar by the end of August 2019. To determine the epidemiological characteristics of its spread, a spatio-temporal analysis was performed using actual field data on the current epidemic. The spatial study, based on standard deviational ellipses of official CSF notifications, showed that the disease likely spread to the northeast part of the prefecture. A maximum significant spatial association estimated between CSF notifications was 23 km by the multi-distance spatial cluster analysis. A space-time permutation analysis identified two significant clusters with an approximate radius of 12 and 20 km and 124 and 98 days of duration, respectively. When the area of the identified clusters was overlaid on a map of habitat quality, approximately 82% and 75% of CSF notifications, respectively, were found in areas with potential contact between pigs and wild boar. The obtained results provide information on the current CSF epidemic, which is mainly driven by wild boar cases with sporadic outbreaks on domestic pig farms. These findings will help implement control measures in Gifu Prefecture.
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Affiliation(s)
- Satoshi Ito
- Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0020, Japan.
- VISAVET Center and Animal Health Department, University Complutense of Madrid, 28040 Madrid, Spain.
| | - Cristina Jurado
- VISAVET Center and Animal Health Department, University Complutense of Madrid, 28040 Madrid, Spain.
| | - Jaime Bosch
- VISAVET Center and Animal Health Department, University Complutense of Madrid, 28040 Madrid, Spain.
| | - Mitsugi Ito
- Akabane Animal Clinic, Co. Ltd., 55 Ishizoe, Akabane-cho, Tahara, Aichi-ken, 441-3502, Japan.
| | | | - Norikazu Isoda
- Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido, 001-0020, Japan.
- Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 001-0020, Japan.
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo, Hokkaido, 060-0018, Japan.
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Agah MA, Notsu K, El-Khaiat HM, Arikawa G, Kubo M, Mitoma S, Okabayashi T, Mekata H, Elhanafy E, El Daous H, Mai TN, Nguyen TH, Isoda N, Sakoda Y, Norimine J, Sekiguchi S. Slaughterhouse survey for detection of bovine viral diarrhea infection among beef cattle in Kyushu, Japan. J Vet Med Sci 2019; 81:1450-1454. [PMID: 31378773 PMCID: PMC6863731 DOI: 10.1292/jvms.19-0045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Bovine viral diarrhea virus (BVDV) footprint has spread across the globe and is
responsible for one of the most economically important diseases in cattle. In Japan, some
regional surveillance and preventive measures to control bovine viral diarrhea (BVD) have
been implemented. However, BVDV infection is poorly understood in cattle industries, and
there is no systematic BVD surveillance system and control program. Kyushu is the center
for raising beef cattle in Japan. Therefore, this study aimed to determine the BVDV
infection using a slaughterhouse survey among beef cattle in Kyushu, Japan. A total of
1,075 blood samples were collected at two regional slaughterhouses in Miyazaki prefecture
from December 2015 to June 2016. Antigen ELISA was used for detection of BVDV antigen in
blood samples. Two samples showed positive results (2/1,075; 0.18%). BVDV RNA was
extracted from positive blood samples; the sequence was determined and analyzed by the
neighbor-joining method for construction of the phylogenetic tree. Phylogenetic analysis
based on the 5’-UTR revealed that the two positive samples were grouped into the same
subtype BVDV-1b in the BVDV-1 genotype, but the infected cattle belonged to two different
farms. In conclusion, this is the first study to identify the presence of BVDV in a
slaughterhouse survey in Kyushu. These findings suggest that a slaughterhouse survey is a
useful tool for developing a surveillance system for monitoring infectious diseases in
cattle.
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Affiliation(s)
- Mohammad Aref Agah
- Faculty of Agriculture, Badghis Higher Education Institution, Shogofan Farm street, Qala-i-now city, Badghis province, Badghis, Afghanistan.,Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Kosuke Notsu
- Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Heba M El-Khaiat
- Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Qalyubia, 13736, Egypt
| | - Genki Arikawa
- Miyakonojo Meat Inspection Office, Miyazaki 885-0021, Japan
| | - Meiko Kubo
- Miyakonojo Meat Inspection Office, Miyazaki 885-0021, Japan
| | - Shuya Mitoma
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5600, Kihara, Kiyotake-cho, Miyazaki, 889-1692, Japan
| | - Tamaki Okabayashi
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Hirohisa Mekata
- Organization for Promotion of Tenure Track, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Eslam Elhanafy
- Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Qalyubia, 13736, Egypt.,Graduate School of Agriculture, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, 889-2192, Japan
| | - Hala El Daous
- Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Qalyubia, 13736, Egypt.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5600, Kihara, Kiyotake-cho, Miyazaki, 889-1692, Japan
| | - Thi Ngan Mai
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5600, Kihara, Kiyotake-cho, Miyazaki, 889-1692, Japan.,Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi 100000, Vietnam
| | - Thi Huyen Nguyen
- Graduate School of Agriculture, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, 889-2192, Japan
| | - Norikazu Isoda
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan
| | - Yoshihiro Sakoda
- Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Junzo Norimine
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Satoshi Sekiguchi
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
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Nguyen LT, Stevenson MA, Firestone SM, Sims LD, Chu DH, Nguyen LV, Nguyen TN, Le KT, Isoda N, Matsuno K, Okamatsu M, Kida H, Sakoda Y. Spatiotemporal and risk analysis of H5 highly pathogenic avian influenza in Vietnam, 2014-2017. Prev Vet Med 2019; 178:104678. [PMID: 31113666 DOI: 10.1016/j.prevetmed.2019.04.007] [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: 09/24/2018] [Revised: 03/10/2019] [Accepted: 04/13/2019] [Indexed: 10/27/2022]
Abstract
The aim of this study was to describe the spatiotemporal distribution of H5 HPAI outbreak reports for the period 2014-2017 and to identify factors associated with H5 HPAI outbreak reports. Throughout the study period, a total of 139 outbreaks of H5 HPAI in poultry were reported, due to either H5N1 (96 outbreaks) or H5N6 (43 outbreaks) subtype viruses. H5N1 HPAI outbreaks occurred in all areas of Vietnam while H5N6 HPAI outbreaks were only reported in the northern and central provinces. We counted the number of H5N1 and H5N6 outbreak report-positive districts per province over the four-year study period and calculated the provincial-level standardized morbidity ratio for H5N1 and H5N6 outbreak reports as the observed number of positive districts divided by the expected number. A mixed-effects, zero-inflated Poisson regression model was developed to identify risk factors for outbreak reports of each H5N1 and H5N6 subtype virus. Spatially correlated and uncorrelated random effects terms were included in this model to identify areas of the country where outbreak reports occurred after known risk factors had been accounted-for. The presence of an outbreak report in a province in the previous 6-12 months increased the provincial level H5N1 outbreak report risk by a factor of 2.42 (95% Bayesian credible interval [CrI] 1.27-4.60) while 1000 bird increases in the density of chickens decreased provincial level H5N6 outbreak report risk by a factor of 0.65 (95% CrI 0.38 to 0.97). We document distinctly different patterns in the spatial and temporal distribution of H5N1 and H5N6 outbreak reports. Most of the variation in H5N1 report risk was accounted-for by the fixed effects included in the zero-inflated Poisson model. In contrast, the amount of unaccounted-for risk in the H5N6 model was substantially greater than the H5N1 model. For H5N6 we recommend that targeted investigations should be carried out in provinces with relatively large spatially correlated random effect terms to identify likely determinants of disease. Similarly, investigations should be carried out in provinces with relatively low spatially correlated random effect terms to identify protective factors for disease and/or reasons for failure to report.
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Affiliation(s)
- Lam Thanh Nguyen
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan; Department of Veterinary Medicine, College of Agriculture, Can Tho University, Campus II, 3/2 Street, Ninh Kieu, Can Tho, Viet Nam
| | - Mark A Stevenson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, 3010, Australia.
| | - Simon M Firestone
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Leslie D Sims
- Asia Pacific Veterinary Information Services, Montmorency, Victoria, 3094, Australia
| | - Duc Huy Chu
- Department of Animal Health, Ministry of Agriculture and Rural Development, Ha Noi, Viet Nam
| | - Long Van Nguyen
- Department of Animal Health, Ministry of Agriculture and Rural Development, Ha Noi, Viet Nam
| | - Tien Ngoc Nguyen
- Department of Animal Health, Ministry of Agriculture and Rural Development, Ha Noi, Viet Nam
| | - Kien Trung Le
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan
| | - Norikazu Isoda
- Research Center for Zoonosis Control, Hokkaido University, North 20, West 10, Kita-ku, Sapporo, Hokkaido, 001-0020, Japan; Global Institution for Collaborative Research and Education, Hokkaido University, North 20, West 10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
| | - Keita Matsuno
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan; Global Institution for Collaborative Research and Education, Hokkaido University, North 20, West 10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan
| | - Hiroshi Kida
- Research Center for Zoonosis Control, Hokkaido University, North 20, West 10, Kita-ku, Sapporo, Hokkaido, 001-0020, Japan; Global Institution for Collaborative Research and Education, Hokkaido University, North 20, West 10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, North 18, West 9, Kita-ku, Sapporo, Hokkaido, 060-0818, Japan; Global Institution for Collaborative Research and Education, Hokkaido University, North 20, West 10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan.
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30
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Thu MJ, Qiu Y, Kataoka-Nakamura C, Sugimoto C, Katakura K, Isoda N, Nakao R. Isolation of Rickettsia, Rickettsiella, and Spiroplasma from Questing Ticks in Japan Using Arthropod Cells. Vector Borne Zoonotic Dis 2019; 19:474-485. [PMID: 30779681 DOI: 10.1089/vbz.2018.2373] [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] [Indexed: 12/19/2022] Open
Abstract
Ticks are blood-sucking ectoparasites that transmit zoonotic pathogens to humans and animals. Ticks harbor not only pathogenic microorganisms but also endosymbionts. Although some tick endosymbionts are known to be essential for the survival of ticks, their roles in ticks remain poorly understood. The main aim of this study was to isolate and characterize tick-borne microorganisms from field-collected ticks using two arthropod cell lines derived from Ixodes scapularis embryos (ISE6) and Aedes albopictus larvae (C6/36). A total of 170 tick homogenates originating from 15 different tick species collected in Japan were inoculated into each cell line. Bacterial growth was confirmed by PCR amplification of 16S ribosomal DNA (rDNA) of eubacteria. During the 8-week observation period, bacterial isolation was confirmed in 14 and 4 samples using ISE6 and C6/36 cells, respectively. The sequencing analysis of the 16S rDNA PCR products indicated that they were previously known tick-borne pathogens/endosymbionts in three different genera: Rickettsia, Rickettsiella, and Spiroplasma. These included four previously validated rickettsial species namely Rickettsia asiatica (n = 2), Rickettsia helvetica (n = 3), Rickettsia monacensis (n = 2), and Rickettsia tamurae (n = 3) and one uncharacterized genotype Rickettsia sp. LON (n = 2). Four isolates of Spiroplasma had the highest similarity with previously reported Spiroplasma isolates: Spiroplasma ixodetis obtained from ticks in North America and Spiroplasma sp. Bratislava 1 obtained from Ixodes ricinus in Europe, while two isolates of Rickettsiella showed 100% identity with Rickettsiella sp. detected from Ixodes uriae at Grimsey Island in Iceland. To the best of our knowledge, this is the first report on successful isolation of Rickettsiella from ticks. The isolates obtained in this study can be further analyzed to evaluate their pathogenic potential in animals and their roles as symbionts in ticks.
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Affiliation(s)
- May June Thu
- 1 Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan.,2 Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan
| | - Yongjin Qiu
- 3 Hokudai Center for Zoonosis Control in Zambia, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
| | - Chikako Kataoka-Nakamura
- 2 Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,4 Surveillance Section, Biomedical Science Center, Seto Center, Kanonji Institute, The Research Foundation for Microbial Diseases of Osaka University, Kagawa, Japan
| | - Chihiro Sugimoto
- 5 Division of Collaboration and Education, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,6 Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Ken Katakura
- 1 Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan
| | - Norikazu Isoda
- 2 Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan.,6 Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Ryo Nakao
- 1 Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan
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31
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Thu MJ, Qiu Y, Matsuno K, Kajihara M, Mori-Kajihara A, Omori R, Monma N, Chiba K, Seto J, Gokuden M, Andoh M, Oosako H, Katakura K, Takada A, Sugimoto C, Isoda N, Nakao R. Diversity of spotted fever group rickettsiae and their association with host ticks in Japan. Sci Rep 2019; 9:1500. [PMID: 30728409 PMCID: PMC6365641 DOI: 10.1038/s41598-018-37836-5] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 12/14/2018] [Indexed: 12/03/2022] Open
Abstract
Spotted fever group (SFG) rickettsiae are obligate intracellular Gram-negative bacteria mainly associated with ticks. In Japan, several hundred cases of Japanese spotted fever, caused by Rickettsia japonica, are reported annually. Other Rickettsia species are also known to exist in ixodid ticks; however, their phylogenetic position and pathogenic potential are poorly understood. We conducted a nationwide cross-sectional survey on questing ticks to understand the overall diversity of SFG rickettsiae in Japan. Out of 2,189 individuals (19 tick species in 4 genera), 373 (17.0%) samples were positive for Rickettsia spp. as ascertained by real-time PCR amplification of the citrate synthase gene (gltA). Conventional PCR and sequencing analyses of gltA indicated the presence of 15 different genotypes of SFG rickettsiae. Based on the analysis of five additional genes, we characterised five Rickettsia species; R. asiatica, R. helvetica, R. monacensis (formerly reported as Rickettsia sp. In56 in Japan), R. tamurae, and Candidatus R. tarasevichiae and several unclassified SFG rickettsiae. We also found a strong association between rickettsial genotypes and their host tick species, while there was little association between rickettsial genotypes and their geographical origins. These observations suggested that most of the SFG rickettsiae have a limited host range and are maintained in certain tick species in the natural environment.
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Affiliation(s)
- May June Thu
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, N 20 W 10, Kita-ku, Sapporo, 001-0020, Japan.,Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Yongjin Qiu
- Hokudai Center for Zoonosis Control in Zambia, School of Veterinary Medicine, University of Zambia, P. O. Box 32379, Lusaka, Zambia
| | - Keita Matsuno
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan.,Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Masahiro Kajihara
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, N 20 W 10, Kita-ku, Sapporo, 001-0020, Japan
| | - Akina Mori-Kajihara
- Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, N 20 W 10, Kita-ku, Sapporo, 001-0020, Japan
| | - Ryosuke Omori
- Division of Bioinformatics, Hokkaido University Research Center for Zoonosis Control, N 20 W 10, Kita-ku, Sapporo, 001-0020, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Saitama, 332-0012, Japan
| | - Naota Monma
- Department of Infection Control, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Kazuki Chiba
- Fukushima Institute for Public Health, 16-6 Mitouchi Houkida, Fukushima, 960-8560, Japan
| | - Junji Seto
- Yamagata Prefectural Institute of Public Health, 1-6-6 Toka-machi, Yamagata, 990-0031, Japan
| | - Mutsuyo Gokuden
- Kagoshima Prefectural Institute for Environmental Research and Public Health, 11-40 Kinko cho, Kagoshima, 892-0835, Japan
| | - Masako Andoh
- Laboratory of Veterinary Public Health, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan
| | - Hideo Oosako
- Kumamoto Prefectural Institute of Public-Health and Environmental Science, Uto-shi, Kumamoto, 869-0425, Japan
| | - Ken Katakura
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Ayato Takada
- Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan.,Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis Control, N 20 W 10, Kita-ku, Sapporo, 001-0020, Japan
| | - Chihiro Sugimoto
- Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan.,Division of Collaboration and Education, Hokkaido University Research Center for Zoonosis Control, N 20 W 10, Kita-ku, Sapporo, 001-0020, Japan
| | - Norikazu Isoda
- Unit of Risk Analysis and Management, Hokkaido University Research Center for Zoonosis Control, N 20 W 10, Kita-ku, Sapporo, 001-0020, Japan.,Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Ryo Nakao
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, N 18 W 9, Kita-ku, Sapporo, 060-0818, Japan.
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Kobayashi A, Qi Z, Shimazaki T, Munesue Y, Miyamoto T, Isoda N, Sawa H, Aoshima K, Kimura T, Mohri S, Kitamoto T, Yamashita T, Miyoshi I. Ganglioside Synthase Knockout Reduces Prion Disease Incubation Time in Mouse Models. Am J Pathol 2018; 189:677-686. [PMID: 30553837 DOI: 10.1016/j.ajpath.2018.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/14/2018] [Accepted: 11/16/2018] [Indexed: 11/18/2022]
Abstract
Localization of the abnormal and normal isoforms of prion proteins to detergent-resistant membrane microdomains, lipid rafts, is important for the conformational conversion. Lipid rafts are enriched in sialic acid-containing glycosphingolipids (namely, gangliosides). Alteration in the ganglioside composition of lipid rafts can affect the localization of lipid raft-associated proteins. To investigate the role of gangliosides in the pathogenesis of prion diseases, we performed intracerebral transmission study of a scrapie prion strain Chandler and a Gerstmann-Sträussler-Scheinker syndrome prion strain Fukuoka-1 using various knockout mouse strains ablated with ganglioside synthase gene (ie, GD2/GM2 synthase, GD3 synthase, or GM3 synthase). After challenge with the Chandler strain, GD2/GM2 synthase knockout mice showed 20% reduction of incubation time, reduced prion protein deposition in the brain with attenuated glial reactions, and reduced localization of prion proteins to lipid rafts. These results raise the possibility that the gangliosides may have an important role in prion disease pathogenesis by affecting the localization of prion proteins to lipid rafts.
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Affiliation(s)
- Atsushi Kobayashi
- Laboratory of Comparative Pathology, Faculty of Veterinary Medicine, Sapporo, Japan.
| | - Zechen Qi
- Laboratory of Comparative Pathology, Faculty of Veterinary Medicine, Sapporo, Japan
| | - Taishi Shimazaki
- Laboratory of Comparative Pathology, Faculty of Veterinary Medicine, Sapporo, Japan
| | - Yoshiko Munesue
- Laboratory of Comparative Pathology, Faculty of Veterinary Medicine, Sapporo, Japan
| | - Tomomi Miyamoto
- Center for Experimental Animal Science, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Norikazu Isoda
- Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education, Sapporo, Japan; Unit of Risk Analysis and Management, Sapporo, Japan
| | - Hirofumi Sawa
- Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education, Sapporo, Japan; Division of Molecular Pathobiology, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Keisuke Aoshima
- Laboratory of Comparative Pathology, Faculty of Veterinary Medicine, Sapporo, Japan
| | - Takashi Kimura
- Laboratory of Comparative Pathology, Faculty of Veterinary Medicine, Sapporo, Japan
| | - Shirou Mohri
- Department of Neurological Science, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tetsuyuki Kitamoto
- Department of Neurological Science, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tadashi Yamashita
- Laboratory of Biochemistry, Graduate School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Ichiro Miyoshi
- Department of Laboratory Animal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
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Maharjan B, Nakajima C, Isoda N, Thapa J, Poudel A, Shah Y, Yamaguchi T, Shrestha B, Hoffmann H, Avsar K, Shrestha A, Gordon SV, Suzuki Y. Genetic diversity and distribution dynamics of multidrug-resistant Mycobacterium tuberculosis isolates in Nepal. Sci Rep 2018; 8:16634. [PMID: 30413747 PMCID: PMC6226479 DOI: 10.1038/s41598-018-34306-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 10/11/2018] [Indexed: 01/06/2023] Open
Abstract
Multidrug-resistant tuberculosis (MDR-TB) is an emerging public health problem in Nepal. Despite the implementation of a successful TB control program in Nepal, notifications of MDR-TB are increasing, yet the reasons are unknown. The objective of this study was to understand the genetic diversity and epidemiological characteristics of MDR-Mycobacterium tuberculosis (MTB) isolates in Nepal. We isolated and genotyped 498 MDR-MTB isolates collected from April 2009 to March 2013 and analyzed the patients' background information. Our results showed that the lineage 2 (Beijing family) was the most predominant lineage (n = 241; 48.4%), followed by lineage 3 (n = 153, 30.7%). Lineage 4 was the third most prevalent (n = 73, 14.5%) followed by lineage 1 (n = 32, 6.4%). The lineages were significantly associated with geographic region, ethnic group, age and sex of patients. The Beijing genotype was found to have an important role in transmitting MDR-TB in Nepal and was significantly associated with the eastern region, mongoloid ethnic group and younger age group. We conclude that early diagnosis and treatment including molecular-epidemiological surveillance of MDR-TB cases will help to control transmission of MDR-TB in Nepal.
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Affiliation(s)
- Bhagwan Maharjan
- German Nepal TB Project (GENETUP/NATA), Kathmandu, Nepal.,Division of Bioresources, Hokkaido University, Research Center for Zoonosis Control, Hokkaido, Japan
| | - Chie Nakajima
- Division of Bioresources, Hokkaido University, Research Center for Zoonosis Control, Hokkaido, Japan.,Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido, Japan
| | - Norikazu Isoda
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido, Japan.,Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido, Japan
| | - Jeewan Thapa
- Division of Bioresources, Hokkaido University, Research Center for Zoonosis Control, Hokkaido, Japan
| | - Ajay Poudel
- Department of Microbiology, Chitwan Medical College Teaching Hospital, Chitwan, Nepal
| | - Yogendra Shah
- Division of Bioresources, Hokkaido University, Research Center for Zoonosis Control, Hokkaido, Japan
| | - Tomoyuki Yamaguchi
- Division of Bioresources, Hokkaido University, Research Center for Zoonosis Control, Hokkaido, Japan
| | | | - Harald Hoffmann
- WHO-Supranational Reference Laboratory of Tuberculosis, Munich, Gauting, Germany.,KuratoriumTuberkulose in der Welt e.V, München-Gauting, Germany
| | - Korkut Avsar
- KuratoriumTuberkulose in der Welt e.V, München-Gauting, Germany.,Asklepios Klinik, Gauting, Germany
| | - Ashish Shrestha
- National Tuberculosis Center, Thimi, Bhaktapur, Nepal.,World Health Organization, Kathmandu, Nepal
| | - Stephen V Gordon
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido, Japan.,UCD School of Veterinary Medicine, University College Dublin, Dublin, D04 W6F6, Ireland
| | - Yasuhiko Suzuki
- Division of Bioresources, Hokkaido University, Research Center for Zoonosis Control, Hokkaido, Japan. .,Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido, Japan.
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Bortey-Sam N, Ikenaka Y, Akoto O, Nakayama SMM, Asante KA, Baidoo E, Obirikorang C, Saengtienchai A, Isoda N, Nimako C, Mizukawa H, Ishizuka M. Oxidative stress and respiratory symptoms due to human exposure to polycyclic aromatic hydrocarbons (PAHs) in Kumasi, Ghana. Environ Pollut 2017; 228:311-320. [PMID: 28551561 DOI: 10.1016/j.envpol.2017.05.036] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/07/2017] [Accepted: 05/14/2017] [Indexed: 06/07/2023]
Abstract
Studies of polycyclic aromatic hydrocarbons (PAHs) and its metabolites in PM10, soils, rat livers and cattle urine in Kumasi, Ghana, revealed high concentrations and cancer potency. In addition, WHO and IARC have reported an increase in cancer incidence and respiratory diseases in Ghana. Human urine were therefore collected from urban and control sites to: assess the health effects associated with PAHs exposure using malondialdehyde (MDA) and 8-hydroxy-2-deoxyguanosine (8-OHdG); identify any association between OH-PAHs, MDA, 8-OHdG with age and sex; and determine the relationship between PAHs exposure and occurrence of respiratory diseases. From the results, urinary concentrations of the sum of OH-PAHs (∑OHPAHs) were significantly higher from urban sites compared to the control site. Geometric mean concentrations adjusted by specific gravity, GMSG, indicated 2-OHNaphthalene (2-OHNap) (6.01 ± 4.21 ng/mL) as the most abundant OH-PAH, and exposure could be through the use of naphthalene-containing-mothballs in drinking water purification, insect repellent, freshener in clothes and/or "treatment of various ailments". The study revealed that exposure to naphthalene significantly increases the occurrence of persistent cough (OR = 2.68, CI: 1.43-5.05), persistent headache (OR = 1.82, CI: 1.02-3.26), tachycardia (OR = 3.36, CI: 1.39-8.10) and dyspnea (OR = 3.07, CI: 1.27-7.43) in Kumasi residents. Highest level of urinary 2-OHNap (224 ng/mL) was detected in a female, who reported symptoms of persistent cough, headache, tachycardia, nasal congestion and inflammation, all of which are symptoms of naphthalene exposure according to USEPA. The ∑OHPAHs, 2-OHNap, 2-3-OHFluorenes, and -OHPhenanthrenes showed a significantly positive correlation with MDA and 4-OHPhenanthrene with 8-OHdG, indicating possible lipid peroxidation/cell damage or degenerative disease in some participants. MDA and 8-OHdG were highest in age group 21-60. The present study showed a significant sex difference with higher levels of urinary OH-PAHs in females than males.
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Affiliation(s)
- Nesta Bortey-Sam
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita ku, Sapporo 060-0818, Japan
| | - Yoshinori Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita ku, Sapporo 060-0818, Japan; Water Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - Osei Akoto
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Shouta M M Nakayama
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita ku, Sapporo 060-0818, Japan
| | - Kwadwo A Asante
- CSIR Water Research Institute, P. O. Box AH 38, Achimota, Accra, Ghana
| | - Elvis Baidoo
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Christian Obirikorang
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science & Technology, Kumasi, Ghana
| | - Aksorn Saengtienchai
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita ku, Sapporo 060-0818, Japan; Department of Pharmacology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
| | - Norikazu Isoda
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo 001-0020, Japan; Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Japan
| | - Collins Nimako
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Hazuki Mizukawa
- Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita ku, Sapporo 060-0818, Japan
| | - Mayumi Ishizuka
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita ku, Sapporo 060-0818, Japan.
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Sekiguchi S, Presi P, Omori R, Staerk K, Schuppers M, Isoda N, Yoshikawa Y, Umemura T, Nakayama H, Fujii Y, Sakoda Y. Evaluation of bovine viral diarrhoea virus control strategies in dairy herds in Hokkaido, Japan, using stochastic modelling. Transbound Emerg Dis 2017; 65:e135-e144. [DOI: 10.1111/tbed.12693] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Indexed: 12/28/2022]
Affiliation(s)
- S. Sekiguchi
- Graduate School of Agriculture and Life Science; The University of Tokyo; Tokyo Japan
- Department of Veterinary Sciences; Faculty of Agriculture; University of Miyazaki; Miyazaki Japan
| | | | - R. Omori
- Research Center for Zoonosis Control; Hokkaido University; Sapporo Hokkaido Japan
| | | | | | - N. Isoda
- Research Center for Zoonosis Control; Hokkaido University; Sapporo Hokkaido Japan
- Graduate School of Veterinary Medicine; Hokkaido University; Sapporo Hokkaido Japan
| | - Y. Yoshikawa
- Department of Animal Risk Management; Faculty of Risk and Crisis Management; Chiba Institute of Science; Chiba Japan
| | - T. Umemura
- Graduate School of Veterinary Medicine; Hokkaido University; Sapporo Hokkaido Japan
| | - H. Nakayama
- Graduate School of Agriculture and Life Science; The University of Tokyo; Tokyo Japan
| | - Y. Fujii
- Department of Veterinary Sciences; Faculty of Agriculture; University of Miyazaki; Miyazaki Japan
| | - Y. Sakoda
- Graduate School of Veterinary Medicine; Hokkaido University; Sapporo Hokkaido Japan
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Shah Y, Maharjan B, Thapa J, Poudel A, Diab HM, Pandey BD, Solo ES, Isoda N, Suzuki Y, Nakajima C. High diversity of multidrug-resistant Mycobacterium tuberculosis Central Asian Strain isolates in Nepal. Int J Infect Dis 2017. [PMID: 28627432 DOI: 10.1016/j.ijid.2017.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES Tuberculosis (TB) caused by Mycobacterium tuberculosis (MTB) poses a major public health problem in Nepal. Although it has been reported as one of the dominant genotypes of MTB in Nepal, little information on the Central Asian Strain (CAS) family is available, especially isolates related to multidrug resistance (MDR) cases. This study aimed to elucidate the genetic and epidemiological characteristics of MDR CAS isolates in Nepal. METHODS A total of 145 MDR CAS isolates collected in Nepal from 2008 to 2013 were characterized by spoligotyping, mycobacterial interspersed repetitive unit-variable number tandem repeat (MIRU-VNTR) analysis, and drug resistance-associated gene sequencing. RESULTS Spoligotyping analysis showed CAS1_Delhi SIT26 as predominant (60/145, 41.4%). However, by combining spoligotyping and MIRU-VNTR typing, it was possible to successfully discriminate all 145 isolates into 116 different types including 18 clusters with 47 isolates (clustering rate 32.4%). About a half of these clustered isolates shared the same genetic and geographical characteristics with other isolates in each cluster, and some of them shared rare point mutations in rpoB that are thought to be associated with rifampicin resistance. CONCLUSIONS Although the data obtained show little evidence that large outbreaks of MDR-TB caused by the CAS family have occurred in Nepal, they strongly suggest several MDR-MTB transmission cases.
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Affiliation(s)
- Yogendra Shah
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan
| | - Bhagwan Maharjan
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan; German Nepal Tuberculosis Project, Nepal Anti-Tuberculosis Association/GENETUP, Kalimati, Kathmandu, Nepal
| | - Jeewan Thapa
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan
| | - Ajay Poudel
- Chitwan Medical College Teaching Hospital, Department of Microbiology, Bharatpur, Chitwan, Nepal
| | - Hassan Mahmoud Diab
- Department of Animal Hygiene, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Basu Dev Pandey
- Leprosy Control Division, Department of Health Services, Ministry of Health, Kathmandu, Nepal; Everest International Clinic and Research Center, Kathmandu, Nepal
| | - Eddie S Solo
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan; University Teaching Hospital, University of Zambia, Lusaka, Zambia
| | - Norikazu Isoda
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan; Hokkaido University, GI-CoRE Global Station for Zoonosis Control, Sapporo, Japan
| | - Yasuhiko Suzuki
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan; Hokkaido University, GI-CoRE Global Station for Zoonosis Control, Sapporo, Japan
| | - Chie Nakajima
- Hokkaido University Research Center for Zoonosis Control, Sapporo, Japan; Hokkaido University, GI-CoRE Global Station for Zoonosis Control, Sapporo, Japan.
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Chu DH, Stevenson MA, Nguyen LV, Isoda N, Firestone SM, Nguyen TN, Nguyen LT, Matsuno K, Okamatsu M, Kida H, Sakoda Y. A cross-sectional study to quantify the prevalence of avian influenza viruses in poultry at intervention and non-intervention live bird markets in central Vietnam, 2014. Transbound Emerg Dis 2017; 64:1991-1999. [PMID: 28120423 DOI: 10.1111/tbed.12605] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 07/28/2016] [Indexed: 11/26/2022]
Abstract
In Vietnam, live bird markets are found in most populated centres, providing the means by which fresh poultry can be purchased by consumers for immediate consumption. Live bird markets are aggregation points for large numbers of poultry, and therefore, it is common for a range of avian influenza viruses to be mixed within live bird markets as a result of different poultry types and species being brought together from different geographical locations. We conducted a cross-sectional study in seven live bird markets in four districts of Thua Thien Hue Province in August and December, 2014. The aims of this study were to (i) document the prevalence of avian influenza in live bird markets (as measured by virus isolation); and (ii) quantify individual bird-, seller- and market-level characteristics that rendered poultry more likely to be positive for avian influenza virus at the time of sale. A questionnaire soliciting details of knowledge, attitude and avian influenza practices was administered to poultry sellers in study markets. At the same time, swabs and faecal samples were collected from individual poultry and submitted for isolation of avian influenza virus. The final data set comprised samples from 1,629 birds from 83 sellers in the seven live bird markets. A total of 113 birds were positive for virus isolation; a prevalence of 6.9 (95% CI 5.8-8.3) avian influenza virus-positive birds per 100 birds submitted for sale. After adjusting for clustering at the market and individual seller levels, none of the explanatory variables solicited in the questionnaire were significantly associated with avian influenza virus isolation positivity. The proportions of variance at the individual market, seller and individual bird levels were 6%, 48% and 46%, respectively. We conclude that the emphasis of avian influenza control efforts in Vietnam should be at the individual seller level as opposed to the market level.
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Affiliation(s)
- D-H Chu
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.,Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoi, Vietnam
| | - M A Stevenson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Vic., Australia
| | - L V Nguyen
- Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoi, Vietnam
| | - N Isoda
- Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan.,Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido, Japan
| | - S M Firestone
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Vic., Australia
| | - T N Nguyen
- Department of Animal Health, Ministry of Agriculture and Rural Development, Hanoi, Vietnam
| | - L T Nguyen
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - K Matsuno
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.,Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido, Japan
| | - M Okamatsu
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - H Kida
- Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido, Japan.,World Organization for Animal Health Reference Laboratory for Highly Pathogenic Avian Influenza and Low Pathogenic Avian Influenza, Sapporo, Hokkaido, Japan
| | - Y Sakoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.,Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido, Japan.,World Organization for Animal Health Reference Laboratory for Highly Pathogenic Avian Influenza and Low Pathogenic Avian Influenza, Sapporo, Hokkaido, Japan
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Kobayashi M, Kodama M, Noshi T, Yoshida R, Kanazu T, Nomura N, Soda K, Isoda N, Okamatsu M, Sakoda Y, Yamano Y, Sato A, Kida H. Therapeutic efficacy of peramivir against H5N1 highly pathogenic avian influenza viruses harboring the neuraminidase H275Y mutation. Antiviral Res 2016; 139:41-48. [PMID: 28012921 DOI: 10.1016/j.antiviral.2016.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 12/12/2016] [Accepted: 12/20/2016] [Indexed: 11/24/2022]
Abstract
High morbidity and mortality associated with human cases of highly pathogenic avian influenza (HPAI) viruses, including H5N1 influenza virus, have been reported. The purpose of the present study was to evaluate the antiviral effects of peramivir against HPAI viruses. In neuraminidase (NA) inhibition and virus replication inhibition assays, peramivir showed strong inhibitory activity against H5N1, H7N1 and H7N7 HPAI viruses with sub-nanomolar activity in enzyme assays. In H5N1 viruses containing the NA H275Y mutation, the antiviral activity of peramivir against the variant was lower than that against the wild-type. Evaluation of the in vivo antiviral activity showed that a single intravenous treatment of peramivir (10 mg/kg) prevented lethality in mice infected with wild-type H5N1 virus and also following infection with H5N1 virus with the H275Y mutation after a 5 day administration of peramivir (30 mg/kg). Furthermore, mice injected with peramivir showed low viral titers and low levels of proinflammatory cytokines in the lungs. These results suggest that peramivir has therapeutic activity against HPAI viruses even if the virus harbors the NA H275Y mutation.
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Affiliation(s)
- Masanori Kobayashi
- Drug Discovery & Disease Research Laboratories, Shionogi & Co., Ltd., Osaka, Japan
| | - Makoto Kodama
- Drug Discovery & Disease Research Laboratories, Shionogi & Co., Ltd., Osaka, Japan
| | - Takeshi Noshi
- Drug Discovery & Disease Research Laboratories, Shionogi & Co., Ltd., Osaka, Japan
| | - Ryu Yoshida
- Drug Discovery & Disease Research Laboratories, Shionogi & Co., Ltd., Osaka, Japan
| | - Takushi Kanazu
- Research Laboratory for Development, Shionogi & Co., Ltd., Osaka, Japan
| | - Naoki Nomura
- Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan; Laboratory for Biologics Development, Research Center for Zoonosis Control, Hokkaido University, Hokkaido, Japan
| | - Kosuke Soda
- Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan; Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Norikazu Isoda
- Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan; Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido, Japan; Unit of Risk Analysis and Management, Research Center for Zoonosis Control, Hokkaido University, Hokkaido, Japan
| | - Masatoshi Okamatsu
- Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
| | - Yoshihiro Sakoda
- Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido, Japan; Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido, Japan
| | - Yoshinori Yamano
- Drug Discovery & Disease Research Laboratories, Shionogi & Co., Ltd., Osaka, Japan
| | - Akihiko Sato
- Drug Discovery & Disease Research Laboratories, Shionogi & Co., Ltd., Osaka, Japan; Research Center for Zoonosis Control, Hokkaido University, Hokkaido, Japan.
| | - Hiroshi Kida
- Research Center for Zoonosis Control, Hokkaido University, Hokkaido, Japan; Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education (GI-CoRE), Hokkaido University, Hokkaido, Japan
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Villanueva MA, Mingala CN, Gloriani NG, Yanagihara Y, Isoda N, Nakajima C, Suzuki Y, Koizumi N. Serological investigation of Leptospira infection and its circulation in one intensive-type water buffalo farm in the Philippines. Jpn J Vet Res 2016; 64:15-24. [PMID: 27348885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Water buffalo is an indispensable livestock in the Philippines. Leptospirosis is a serious zoonosis that can be fatal to humans and cause reproductive problems in livestock. Leptospirosis has been reported in some countries where water buffaloes are commercially raised, highlighting the Leptospira prevalence in this farming system, but information on leptospirosis in water buffalo farms in the Philippines is limited. In this study, we collected blood samples from rats (n = 21), and water buffaloes (n = 170) from different groups and locations in one intensive-type buffalo farm in the Philippines. Serum was analyzed by microscopic agglutination test (MAT). Anti-Leptospira antibodies reacting with serogroups Canicola, Icterohaemorrhagiae and Pomona were found in sera of 30% tested rats, and 48% of water buffalo sera tested positive for at least one Leptospira strain, in which serogroups Mini, Hebdomadis, Tarassovi and Pyrogenes were predominantly agglutinated. The number of seropositive young water buffaloes (< 1 year-old) was lower than that of older seropositive ones. Furthermore, sera from younger water buffaloes were reactive with single serotypes with low MAT titers, but older animals were reactive with multiple Leptospira strains with variable MAT titers. In addition, antibodies against serogroups Icterohaemorrhagiae and Pomona were detected in both animals. Finally, Leptospira infection was found associated with age and animal grouping, highlighting the impact of management in the persistence of leptospirosis at intensive-type buffalo farm settings in the Philippines. Further investigation and appropriate control strategies are required to prevent leptospirosis from causing risks to public health and economic losses to the water buffalo farming industry.
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40
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Noyori O, Matsuno K, Kajihara M, Nakayama E, Igarashi M, Kuroda M, Isoda N, Yoshida R, Takada A. Differential potential for envelope glycoprotein-mediated steric shielding of host cell surface proteins among filoviruses. Virology 2013; 446:152-61. [DOI: 10.1016/j.virol.2013.07.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Revised: 05/15/2013] [Accepted: 07/24/2013] [Indexed: 12/21/2022]
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Kuribayashi S, Sakoda Y, Kawasaki T, Tanaka T, Yamamoto N, Okamatsu M, Isoda N, Tsuda Y, Sunden Y, Umemura T, Nakajima N, Hasegawa H, Kida H. Excessive cytokine response to rapid proliferation of highly pathogenic avian influenza viruses leads to fatal systemic capillary leakage in chickens. PLoS One 2013; 8:e68375. [PMID: 23874602 PMCID: PMC3706397 DOI: 10.1371/journal.pone.0068375] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 05/29/2013] [Indexed: 11/18/2022] Open
Abstract
Highly pathogenic avian influenza viruses (HPAIVs) cause lethal infection in chickens. Severe cases of HPAIV infections have been also reported in mammals, including humans. In both mammals and birds, the relationship between host cytokine response to the infection with HPAIVs and lethal outcome has not been well understood. In the present study, the highly pathogenic avian influenza viruses A/turkey/Italy/4580/1999 (H7N1) (Ty/Italy) and A/chicken/Netherlands/2586/2003 (H7N7) (Ck/NL) and the low pathogenic avian influenza virus (LPAIV) A/chicken/Ibaraki/1/2005 (H5N2) (Ck/Ibaraki) were intranasally inoculated into chickens. Ty/Italy replicated more extensively than Ck/NL in systemic tissues of the chickens, especially in the brain, and induced excessive mRNA expression of inflammatory and antiviral cytokines (IFN-γ, IL-1β, IL-6, and IFN-α) in proportion to its proliferation. Using in situ hybridization, IL-6 mRNA was detected mainly in microglial nodules in the brain of the chickens infected with Ty/Italy. Capillary leakage assessed by Evans blue staining was observed in multiple organs, especially in the brains of the chickens infected with Ty/Italy, and was not observed in those infected with Ck/NL. In contrast, LPAIV caused only local infection in the chickens, with neither apparent cytokine expression nor capillary leakage in any tissue of the chickens. The present results indicate that an excessive cytokine response is induced by rapid and extensive proliferation of HPAIV and causes fatal multiple organ failure in chickens.
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Affiliation(s)
- Saya Kuribayashi
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Takeshi Kawasaki
- Research Office Concerning the Health of Human and Birds, Abashiri, Japan
| | - Tomohisa Tanaka
- Laboratory of Comparative Pathology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Naoki Yamamoto
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yoshimi Tsuda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yuji Sunden
- Laboratory of Comparative Pathology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Takashi Umemura
- Laboratory of Comparative Pathology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Noriko Nakajima
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hideki Hasegawa
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hiroshi Kida
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
- * E-mail:
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Isoda N, Kadohira M, Sekiguchi S, Schuppers M, Stärk KDC. Review: Evaluation of Foot-and-Mouth Disease Control Using Fault Tree Analysis. Transbound Emerg Dis 2013; 62:233-44. [DOI: 10.1111/tbed.12116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Indexed: 11/30/2022]
Affiliation(s)
- N. Isoda
- SAFOSO AG; Bern Switzerland
- Graduate School of Veterinary Medicine; Hokkaido University; Sapporo Japan
| | - M. Kadohira
- Faculty of Animal Science; Obihiro University of Agriculture and Veterinary Medicine; Obihiro Japan
| | - S. Sekiguchi
- Graduate School of Agricultural and Life Science; The University of Tokyo; Tokyo Japan
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Sakoda Y, Okamatsu M, Isoda N, Yamamoto N, Ozaki K, Umeda Y, Aoyama S, Kida H. Purification of human and avian influenza viruses using cellulose sulfate ester (Cellufine Sulfate) in the process of vaccine production. Microbiol Immunol 2012; 56:490-5. [PMID: 22530951 DOI: 10.1111/j.1348-0421.2012.00468.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [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
Affinity chromatography using sulfated, spherical cellulose beads (Cellufine Sulfate) was assessed for purification of influenza A and influenza B viruses. Recovery rates of viruses eluted from the beads were high for all tested virus strains. This method was also useful for removing chicken egg-derived impurities from allantoic fluids containing influenza viruses; the hemagglutination activity per amount of protein in the eluted sample was significantly higher than that in the applied sample. These results suggest that use of Cellufine Sulfate is a practical method for primary purification of influenza viruses in the process of influenza vaccine production.
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Affiliation(s)
- Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
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Isoda N, Tsuda Y, Asakura S, Okamatsu M, Sakoda Y, Kida H. The nucleoprotein is responsible for intracerebral pathogenicity of A/duck/Mongolia/47/2001 (H7N1) in chicks. Arch Virol 2012; 157:2257-64. [PMID: 22833102 DOI: 10.1007/s00705-012-1415-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 06/08/2012] [Indexed: 11/30/2022]
Abstract
Avian influenza viruses A/duck/Mongolia/47/2001 (H7N1) (47/01) and A/duck/Mongolia/867/2002 (H7N1) (867/02) were defined as low-pathogenic avian influenza viruses (LPAIVs) using an intravenous pathogenicity test in chickens. On the other hand, the intracerebral pathogenicity indices of 47/01 and 867/02 were 1.30 and 0.00, respectively. A series of reassortant viruses were generated between 47/01 and 867/02, and their intracerebral pathogenicity was compared in one-day-old chicks to identify the protein(s) responsible for the intracerebral pathogenicity of 47/01. The results indicate that the amino acids at positions 50 and 98 of the nucleoprotein are related to the pathogenicity of 47/01 in chicks by intracerebral inoculation. A significant association was found between mortality of the chicks inoculated intracerebrally with 47/01 and virus replication in the lungs and/or brain. These results indicate that the NP of avian influenza viruses may be responsible for intracerebral pathogenicity in the host.
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Affiliation(s)
- Norikazu Isoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18-jo Nishi-9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan
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45
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Sakoda Y, Naito M, Ito M, Ito Y, Isoda N, Tanaka T, Umemura T, Kida H. Recovery of leptospires from miniature pigs experimentally infected with Leptospira interrogans serovar Manilae strain UP-MMC under immunosuppressive conditions by dexamethasone. J Vet Med Sci 2012; 74:955-8. [PMID: 22446397 DOI: 10.1292/jvms.11-0537] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Leptospira interrogans serovar Manilae strain UP-MMC was inoculated into miniature pigs to assess its pathogenicity. Leptospires were recovered from the whole blood, kidneys, and livers in the acute phase without showing any clinical signs. Under immunosuppressive conditions by dexamethasone, leptospires were recovered from the kidneys and their genes were detected from the urine in the chronic phase. These results indicate that leptospires persisted in the kidneys until the chronic phase, and excretion of leptospires in the urine was enhanced under immunosuppressive conditions, resulting in horizontal transmission among pigs on farms.
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Affiliation(s)
- Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
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46
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Takeyama N, Minari K, Kajihara M, Isoda N, Sakamoto R, Sasaki T, Kokumai N, Takikawa N, Shiraishi R, Mase M, Hagiwara J, Kodama T, Imamura T, Sakaguchi M, Ohgitani T, Sawata A, Okamatsu M, Muramatsu M, Tsukamoto K, Lin Z, Tuchiya K, Sakoda Y, Kida H. Detection of highly pathogenic avian influenza virus infection in vaccinated chicken flocks by monitoring antibodies against non-structural protein 1 (NS1). Vet Microbiol 2011; 147:283-91. [DOI: 10.1016/j.vetmic.2010.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Revised: 06/21/2010] [Accepted: 07/01/2010] [Indexed: 11/29/2022]
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Feng F, Miura N, Isoda N, Sakoda Y, Okamatsu M, Kida H, Nishimura SI. Novel trivalent anti-influenza reagent. Bioorg Med Chem Lett 2010; 20:3772-6. [DOI: 10.1016/j.bmcl.2010.04.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 03/28/2010] [Accepted: 04/15/2010] [Indexed: 10/19/2022]
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Itoh Y, Ozaki H, Ishigaki H, Sakoda Y, Nagata T, Soda K, Isoda N, Miyake T, Ishida H, Okamoto K, Nakayama M, Tsuchiya H, Torii R, Kida H, Ogasawara K. Subcutaneous inoculation of a whole virus particle vaccine prepared from a non-pathogenic virus library induces protective immunity against H7N7 highly pathogenic avian influenza virus in cynomolgus macaques. Vaccine 2009; 28:780-9. [PMID: 19857455 DOI: 10.1016/j.vaccine.2009.10.067] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 09/09/2009] [Accepted: 10/13/2009] [Indexed: 11/30/2022]
Abstract
Development of H7N7 highly pathogenic avian influenza virus (HPAIV) vaccines is an urgent issue since human cases of infection with this subtype virus have been reported and most humans have no immunity against H7N7 viruses. We made an H7N7 vaccine combining components from an influenza virus library of non-pathogenic type A influenza viruses. Antibody and T cell recall responses specific against the vaccine strain were elicited by subcutaneous inoculation with the whole virus particle vaccine with or without alum as an adjuvant in cynomolgus macaques. No significant difference was observed in magnitude of antibody responses between vaccination with alum and vaccination without alum, though vaccination with alum induced longer recall responses of CD8(+) T cells than did vaccination without alum. After challenge with a subtype of H7N7 HPAIV, the virus was detected in nasal swabs of unvaccinated macaques for 8 days but only for 1 day in the animals vaccinated either with or without alum, although the macaques vaccinated with alum showed elevated body temperature more briefly after infection. These findings demonstrated that this H7N7 HPAIV strain is pathogenic to macaques and that the vaccine conferred protective immunity to macaques against H7N7 HPAIV infection.
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Affiliation(s)
- Yasushi Itoh
- Department of Pathology, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
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Moritoh K, Yamauchi H, Asano A, Yoshii K, Kariwa H, Takashima I, Isoda N, Sakoda Y, Kida H, Sasaki N, Agui T. Generation of congenic mouse strains by introducing the virus-resistant genes, Mx1 and Oas1b, of feral mouse-derived inbred strain MSM/Ms into the common strain C57BL/6J. Jpn J Vet Res 2009; 57:89-99. [PMID: 19827744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Mx1 (Myxovirus resistance protein) and Oaslb (Oligoadenylate synthetase-1), induced by type 1 interferon (IFN), play a role in early antiviral innate immunity by inhibiting the replication of viruses. In mice, Mx1 and Oas1b confer resistance to the infection of orthomyxoviruses including influenza viruses and flaviviruses including West Nile viruses, respectively. Laboratory mice have been used to study the mechanisms of the pathogenesis of these virus infections; however, it is possible that they are not a suitable model system to study these viruses, since most of the inbred laboratory mouse strains lack both genes. It has been reported that feral mouse-derived inbred strains show resistance to the infection of these viruses due to the presence of intact both genes. In this study, we generated congenic strains in which the Mx or Oas locus of the MSM/Ms (MSM) mouce was introduced to the most widely used mouse strain, C57BL/6J (B6). B6.MSM-Mx mice showed resistance to the infection of influenza virus but not of West Nile virus. On the other hand, B6.MSM-Oas mice showed resistance to the infection of West Nile virus but not of influenza virus. Our results indicate that Mx1 and Oaslb show highly antiviral specificity in mice possessing the same genetic background. Therefore, these congenic mice are useful for not only infection study but also investigation of host defense mechanism to these viruses.
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Affiliation(s)
- Kanako Moritoh
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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Tsuda Y, Isoda N, Sakoda Y, Kida H. Factors responsible for plaque formation of A/duck/Siberia/272/1998 (H13N6) influenza virus on MDCK cells. Virus Res 2009; 140:194-8. [DOI: 10.1016/j.virusres.2008.12.005] [Citation(s) in RCA: 11] [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] [Received: 09/11/2008] [Revised: 12/15/2008] [Accepted: 12/16/2008] [Indexed: 11/29/2022]
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