MISC - OKABAYASHI Tamaki
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2024年度CADIC国際シンポジウムレポート「世界から学ぶアフリカ豚熱対策」 Invited
岡林 環樹
養豚界 2025.2
Authorship：Lead author, Last author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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動物のSFTSV感染 Invited
岡林 環樹
医療と検査機器・試薬 2024.12
Authorship：Lead author, Last author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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One Healthのために、獣医学上おさえたいウイルス感染症 Invited
岡林 環樹
臨床とウイルス 2023.10
Authorship：Lead author, Corresponding author Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
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自然界におけるSFTSウイルス伝播様式 Invited
岡林環樹
医学のあゆみ 284 ( 2 ) 2023.1
Authorship：Lead author Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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Editorial: Zoonotic diseases among pigs
Lin C.N., Okabayashi T., Tummaruk P., Ooi P.T.
Frontiers in Veterinary Science 9 1122679 2023.1
Language：English Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：Frontiers in Veterinary Science
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Identification of domestic cat hepadnavirus from a cat blood sample in Japan
TAKAHASHI Kazuki, KANEKO Yasuyuki, SHIBANAI Akiko, YAMAMOTO Shushi, KATAGIRI Ayana, OSUGA Tatsuyuki, INOUE Yoshiyuki, KURODA Kohei, TANABE Mika, OKABAYASHI Tamaki, NAGANOBU Kiyokazu, MINOBE Isao, SAITO Akatsuki
Journal of Veterinary Medical Science 84 ( 5 ) 648 - 652 2022.5
Language：English Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：JAPANESE SOCIETY OF VETERINARY SCIENCE
The hepatitis B virus (<i>Hepadnaviridae</i>) induces chronic hepatitis and hepatic cancer in humans. A novel domestic cat hepadnavirus (DCH) was recently identified in several countries, however, the DCH infection status of cats in Japan is unknown. Therefore, we investigated the DCH infection rate of 139 cat samples collected in Japan. We identified one positive blood sample (0.78%) from a 17-year-old female cat with chronically elevated alanine aminotransferase. Phylogenetic analysis demonstrated that the DCH strain identified in this study is genetically different from strains in other countries. Further investigations are required to elucidate the evolution of DCH and the impact of DCH infection on hepatic diseases in domestic cats.
DOI： 10.1292/jvms.22-0010
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Coronavirus infection in livestock animals Invited
Tamaki Okabayashi
Journal of Japan Association of Public Health Veterinarians 23 41 - 44 2021.4
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Japan Association of Public Health Veterinarians
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KANEKO Chiho, KANEKO Yasuyuki, SUDARYATMA Putu Eka, MEKATA Hirohisa, KIRINO Yumi, YAMAGUCHI Ryoji, OKABAYASHI Tamaki
Journal of Veterinary Medical Science 83 ( 4 ) 680 - 684 2021
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：JAPANESE SOCIETY OF VETERINARY SCIENCE
We isolated two pseudorabies virus (PRV) isolates (designated OT-1 and OT-2) from two hunting dogs exhibiting neurological manifestations after eating the flesh of wild boar hunted in Oita prefecture, Kyushu Island, Japan. The isolates corresponded to a previously reported PRV (MY-1 strain) isolated from a hunting dog in neighboring Miyazaki prefecture, and it clustered into genotype II based on the glycoprotein C sequence. Our results suggest that this common PRV strain may have been maintained in wild boars on Kyushu Island even though domestic pigs in this area have attained an Aujeszky’s disease-free status.
DOI： 10.1292/jvms.20-0450
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ITO Soma, HIRAI Takuya, HAMABE Saori, SUBANGKIT Mawar, OKABAYASHI Tamaki, GOTO Yoshitaka, NISHIDA Shin, KURITA Toshio, YAMAGUCHI Ryoji
Journal of Veterinary Medical Science 83 ( 1 ) 146 - 150 2021
Language：English Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：JAPANESE SOCIETY OF VETERINARY SCIENCE
On a coastline in Miyazaki Prefecture, Japan, a wild subadult female striped dolphin was found dead. Necropsy revealed poor nutritional status and bilateral pneumonia, which was histologically diagnosed as severe suppurative necrotizing bronchopneumonia. Special staining detected numerous intralesional filamentous, branching bacteria, which was identified as <i>Nocardia cyriacigeorgica</i> by sequencing of 16S ribosomal RNA and gyrB genes. Other main histological findings included lymphoid depletion in the spleen and superficial cervical and pulmonary lymph nodes. Suppurative nocardiosis without a granulomatous reaction is uncommon, and it is assumed its pathogenesis was related to the host’s immune status. This paper discusses the variable inflammatory response to nocardiosis and describes the first case of <i>N. cyriacigeorgica</i> infection in a wild striped dolphin in Japan.
DOI： 10.1292/jvms.20-0234
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動物におけるコロナウイルス感染症 Invited
岡林 環樹
家畜感染症学会誌 9 ( 2 ) 31 - 38 2020.7
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：家畜感染症学会誌
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伴侶動物から感染する人獣共通感染症 Invited
岡林 環樹
現代化学 2020.7
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：東京化学同人
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Rapid inactivation of SARS-CoV-2 with Deep-UV LED irradiation
Inagaki H., Saito A., Sugiyama H., Okabayashi T., Fujimoto S.
Emerging Microbes and Infections 9 ( 1 ) 1744 - 1747 2020
Language：Japanese Publishing type：Rapid communication, short report, research note, etc. (scientific journal) Publisher：Emerging Microbes and Infections
The spread of novel coronavirus disease 2019 (COVID-19) infections worldwide has raised concerns about the prevention and control of SARS-CoV-2. Devices that rapidly inactivate viruses can reduce the chance of infection through aerosols and contact transmission. This in vitro study demonstrated that irradiation with a deep ultraviolet light-emitting diode (DUV-LED) of 280 ±5 nm wavelength rapidly inactivates SARS-CoV-2 obtained from a COVID-19 patient. Development of devices equipped with DUV-LED is expected to prevent virus invasion through the air and after touching contaminated objects.
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宮崎大学CADIC アフリカ豚コレラ緊急セミナー報告 Invited
岡林 環樹
養豚界 ( 1月号 ) 56 - 58 2019.1
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：緑書房
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Agah M.A., Notsu K., El-Khaiat H.M., Arikawa G., Kubo M., Mitoma S., Okabayashi T., Mekata H., Elhanafy E., Daous H.E.L., Mai T.N., Nguyen T.H., Isoda N., Sakoda Y., Norimine J., Sekiguchi S.
Journal of Veterinary Medical Science 81 ( 10 ) 1450 - 1454 2019
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：Journal of Veterinary Medical Science
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.
DOI： 10.1292/jvms.19-0045
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Okabayashi T., Sasaki T., Masrinoul P., Chantawat N., Yoksan S., Nitatpattan N., Chusri S., Morales Vargas R.E., Grandadam M., Brey P.T., Soegijanto S., Mulyantno K.C., Churrotin S., Kotaki T., Faye O., Faye O., Sow A., Sall A.A., Puiprom O., Chaichana P., Kurosu T., Kato S., Kosaka M., Ramasoota P., Ikuta K.
Journal of Clinical Microbiology 54 ( 4 ) 1173 - 1174 2016.4
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：Journal of Clinical Microbiology
DOI： 10.1128/JCM.03073-15
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ウイルスによるJAK/STAT情報伝達系抑制機構の多様性
岡林 環樹
蛋白質核酸酵素 2004
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)
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Diversity of suppression mechanisms of JAK/STAT pathway by virus infection
Okabayashi Tamaki
Tanpakushitsu Kakusan Koso. 2004
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)
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Short report: prevalence of antibodies against spotted fever, murine typhus, and Q fever rickettsiae in humans living in Zambia.
Okabayashi Tamaki
Am J Trop Med Hyg 61 70 - 2 1999
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)