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  1. Article: Seroprevalence of SARS-CoV-2 antibodies in dogs and cats during the early and mid-pandemic periods in Japan.

    Yamayoshi, Seiya / Ito, Mutsumi / Iwatsuki-Horimoto, Kiyoko / Yasuhara, Atsuhiro / Okuda, Moe / Hamabata, Taiki / Murakami, Jurika / Duong, Calvin / Yamamoto, Tsukasa / Kuroda, Yudai / Maeda, Ken / Kawaoka, Yoshihiro

    One health (Amsterdam, Netherlands)

    2023  Volume 17, Page(s) 100588

    Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has continued to circulate in humans since its emergence in 2019. While infection in humans continues, numerous spillover events to at least 32 animal species, including companion and zoo ... ...

    Abstract Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has continued to circulate in humans since its emergence in 2019. While infection in humans continues, numerous spillover events to at least 32 animal species, including companion and zoo animals, have been reported. Since dogs and cats are highly susceptible to SARS-CoV-2 and have direct contact with their owners and other household members, it is important to know the prevalence of SARS-CoV-2 in dogs and cats. Here, we established an ELISA to detect serum antibodies against the receptor-binding domain and the ectodomain of the SARS-CoV-2 spike and nucleocapsid proteins. Using this ELISA, we assessed seroprevalence in 488 dog serum samples and 355 cat serum samples that were collected during the early pandemic period (between May and June of 2020) and 312 dog serum samples and 251 cat serum samples that were collected during the mid-pandemic period (between October 2021 and January 2022). We found that two dog serum samples (0.41%) collected in 2020, one cat serum sample (0.28%) collected in 2020, and four cat serum samples (1.6%) collected in 2021 were positive for antibodies against SARS-CoV-2. No dog serum samples collected in 2021 were positive for these antibodies. We conclude that the seroprevalence of SARS-CoV-2 antibodies in dogs and cats in Japan is low, suggesting that these animals are not a major SARS-CoV-2 reservoir.
    Language English
    Publishing date 2023-06-19
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2834831-X
    ISSN 2352-7714
    ISSN 2352-7714
    DOI 10.1016/j.onehlt.2023.100588
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Cross-neutralization activities of antibodies against 18 lyssavirus glycoproteins.

    Inoue, Yusuke / Kaku, Yoshihiro / Harada, Michiko / Ishijima, Keita / Kuroda, Yudai / Tatemoto, Kango / Virhuez-Mendoza, Milagros / Nishino, Ayano / Yamamoto, Tsukasa / Inoue, Satoshi / Matsuu, Aya / Maeda, Ken

    Japanese journal of infectious diseases

    2023  

    Abstract: Some lyssaviruses, including the rabies virus (RABV), induce lethal neurological symptoms in humans. However, commercial vaccines have only been evaluated for their efficacy against RABV and not against other lyssaviruses. To assess cross-reactivity ... ...

    Abstract Some lyssaviruses, including the rabies virus (RABV), induce lethal neurological symptoms in humans. However, commercial vaccines have only been evaluated for their efficacy against RABV and not against other lyssaviruses. To assess cross-reactivity among lyssaviruses, including RABV, sera from rabbits inoculated with human and animal RABV vaccines and polyclonal antibodies from rabbits immunized with expression plasmids of the glycoproteins of all 18 lyssaviruses were prepared, and cross-reactivity was evaluated via virus-neutralization tests using RABV, European bat lyssavirus-1 (EBLV-1), Duvenhage virus (DUVV), Mokola virus (MOKV), and Lagos bat virus (LBV). The sera against RABV vaccines showed cross-reactivity with EBLV-1 and DUVV, which both belong to phylogroup I. However, the reactivity with MOKV and LBV in phylogroup II was notably limited or below the detection level. Next, we compared the cross-reactivity of the polyclonal antibodies against all the lyssavirus glycoproteins. Polyclonal antibodies had high virus-neutralization titers against the same phylogroup, but not against different phylogroups. Our findings indicate that a new vaccine should be developed for pre- and post-exposure prophylaxis against lyssavirus infections.
    Language English
    Publishing date 2023-12-28
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1478383-6
    ISSN 1884-2836 ; 1344-6304
    ISSN (online) 1884-2836
    ISSN 1344-6304
    DOI 10.7883/yoken.JJID.2023.400
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Establishment of serological neutralizing tests using pseudotyped viruses for comprehensive detection of antibodies against all 18 lyssaviruses.

    Inoue, Yusuke / Kaku, Yoshihiro / Harada, Michiko / Ishijima, Keita / Kuroda, Yudai / Tatemoto, Kango / Virhuez-Mendoza, Milagros / Nishino, Ayano / Yamamoto, Tsukasa / Park, Eun-Sil / Inoue, Satoshi / Matsuu, Aya / Maeda, Ken

    The Journal of veterinary medical science

    2023  Volume 86, Issue 1, Page(s) 128–134

    Abstract: Rabies is a fatal zoonotic, neurological disease caused by rabies lyssavirus (RABV) and other lyssaviruses. In this study, we established novel serological neutralizing tests (NT) based on vesicular stomatitis virus pseudotypes possessing all 18 known ... ...

    Abstract Rabies is a fatal zoonotic, neurological disease caused by rabies lyssavirus (RABV) and other lyssaviruses. In this study, we established novel serological neutralizing tests (NT) based on vesicular stomatitis virus pseudotypes possessing all 18 known lyssavirus glycoproteins. Applying this system to comparative NT against rabbit sera immunized with current RABV vaccines, we showed that the current RABV vaccines fail to elicit sufficient neutralizing antibodies against lyssaviruses other than to those in phylogroup I. Furthermore, comparative NT against rabbit antisera for 18 lyssavirus glycoproteins showed glycoproteins of some lyssaviruses elicited neutralizing antibodies against a broad range of lyssaviruses. This novel testing system will be useful to comprehensively detect antibodies against lyssaviruses and evaluate their cross-reactivities for developing a future broad-protective vaccine.
    MeSH term(s) Animals ; Rabbits ; Lyssavirus ; Rabies/veterinary ; Antibodies, Viral ; Viral Pseudotyping/veterinary ; Rabies virus ; Antibodies, Neutralizing ; Rabies Vaccines ; Glycoproteins ; Zoonoses
    Chemical Substances Antibodies, Viral ; Antibodies, Neutralizing ; Rabies Vaccines ; Glycoproteins
    Language English
    Publishing date 2023-12-12
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1071753-5
    ISSN 1347-7439 ; 0916-7250
    ISSN (online) 1347-7439
    ISSN 0916-7250
    DOI 10.1292/jvms.23-0463
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Impact of Reinfection with SARS-CoV-2 Omicron Variants in Previously Infected Hamsters.

    Shiwa-Sudo, Nozomi / Sakai, Yusuke / Iwata-Yoshikawa, Naoko / Watanabe, Shinji / Yamada, Souichi / Kuroda, Yudai / Yamamoto, Tsukasa / Shirakura, Masayuki / Fujisaki, Seiichiro / Miyazaki, Kaya / Miura, Hideka / Nagata, Shiho / Fukushi, Shuetsu / Maeda, Ken / Hasegawa, Hideki / Suzuki, Tadaki / Nagata, Noriyo

    Journal of virology

    2023  Volume 97, Issue 1, Page(s) e0136622

    Abstract: The diversity of SARS-CoV-2 mutations raises the possibility of reinfection of individuals previously infected with earlier variants, and this risk is further increased by the emergence of the B.1.1.529 Omicron variant. In this study, we used ... ...

    Abstract The diversity of SARS-CoV-2 mutations raises the possibility of reinfection of individuals previously infected with earlier variants, and this risk is further increased by the emergence of the B.1.1.529 Omicron variant. In this study, we used an
    MeSH term(s) Animals ; Cricetinae ; COVID-19 ; Mesocricetus ; Reinfection ; RNA, Viral ; SARS-CoV-2/genetics
    Chemical Substances RNA, Viral
    Language English
    Publishing date 2023-01-12
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80174-4
    ISSN 1098-5514 ; 0022-538X
    ISSN (online) 1098-5514
    ISSN 0022-538X
    DOI 10.1128/jvi.01366-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Pet Animals Were Infected with SARS-CoV-2 from Their Owners Who Developed COVID-19: Case Series Study.

    Kuroda, Yudai / Watanabe, Kei / Yamamoto, Tsukasa / Suzuki, Hiroki / Park, Eun-Sil / Ishijima, Keita / Tatemoto, Kango / Virhuez-Mendoza, Milagros / Inoue, Yusuke / Harada, Michiko / Nishino, Ayano / Sekizuka, Tsuyoshi / Kuroda, Makoto / Fujimoto, Tsuguto / Ishihara, Genki / Horie, Ryo / Kawamoto, Kosuke / Maeda, Ken

    Viruses

    2023  Volume 15, Issue 10

    Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection among pets owned by coronavirus disease 2019 (COVID-19) patients has been reported around the world. However, how often the animals are exposed to SARS-CoV-2 by their owners is still ... ...

    Abstract Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection among pets owned by coronavirus disease 2019 (COVID-19) patients has been reported around the world. However, how often the animals are exposed to SARS-CoV-2 by their owners is still unclear. We have collected swab samples from COVID-19 patients' pets and performed real-time RT-PCR to detect the viral genome. In total, 8 of 53 dogs (15.1%) and 5 of 34 cats (14.7%) tested positive for the SARS-CoV-2 N gene. The result of a virus neutralization (VN) test also showed VN antibodies in four cats and six dogs. Our results indicate that the virus often passed from infected owners to their pets, which then excreted the virus despite having no or mild clinical signs.
    MeSH term(s) Humans ; Animals ; Dogs ; Cats ; COVID-19 ; SARS-CoV-2/genetics ; Genome, Viral ; Serologic Tests ; Specimen Handling ; Cat Diseases ; Dog Diseases
    Language English
    Publishing date 2023-09-29
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15102028
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Prolonged SARS-CoV-2 infection associated with long-term corticosteroid use in a patient with impaired B-cell immunity.

    Morishita, Momoko / Suzuki, Manabu / Matsunaga, Akihiro / Ishizhima, Keishi / Yamamoto, Tsukasa / Kuroda, Yudai / Kanno, Takayuki / Tsujimoto, Yoshie / Ishida, Akane / Hashimoto, Masao / Ishii, Satoru / Takasaki, Jin / Naka, Go / Iikura, Motoyasu / Izumi, Shinyu / Suzuki, Tadaki / Maeda, Ken / Ishizaka, Yukihito / Hojo, Masayuki /
    Sugiyama, Haruhito

    Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy

    2022  Volume 28, Issue 7, Page(s) 971–974

    Abstract: Corticosteroids are widely used to treat severe COVID-19, but in immunocompromised individuals, who are susceptible to persistent infection, long term corticosteroid use may delay viral clearance. We present a case of prolonged SARS-CoV-2 infection in a ... ...

    Abstract Corticosteroids are widely used to treat severe COVID-19, but in immunocompromised individuals, who are susceptible to persistent infection, long term corticosteroid use may delay viral clearance. We present a case of prolonged SARS-CoV-2 infection in a man with significantly impaired B-cell immunity due to non-Hodgkin lymphoma which had been treated with rituximab. SARS-CoV-2 shedding persisted, despite treatment with remdesivir. Viral sequencing confirmed the persistence of the same viral strain, ruling out the possibility of reinfection. Although SARS-CoV-2 IgG, IgA and IgM remained negative throughout the treatment period, after reduction of the corticosteroid dose, PCR became negative. Long-term corticosteroid treatment, especially in immunocompromised individuals, may result in suppression of cell-mediated immunity and prolonged SARS-CoV-2 infection.
    MeSH term(s) Antibodies, Viral ; COVID-19/drug therapy ; Humans ; Immunocompromised Host ; Male ; Rituximab/adverse effects ; SARS-CoV-2
    Chemical Substances Antibodies, Viral ; Rituximab (4F4X42SYQ6)
    Language English
    Publishing date 2022-02-10
    Publishing country Netherlands
    Document type Case Reports ; Journal Article
    ZDB-ID 1355399-9
    ISSN 1437-7780 ; 1341-321X
    ISSN (online) 1437-7780
    ISSN 1341-321X
    DOI 10.1016/j.jiac.2022.02.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Structural delineation and computational design of SARS-CoV-2-neutralizing antibodies against Omicron subvariants.

    Moriyama, Saya / Anraku, Yuki / Taminishi, Shunta / Adachi, Yu / Kuroda, Daisuke / Kita, Shunsuke / Higuchi, Yusuke / Kirita, Yuhei / Kotaki, Ryutaro / Tonouchi, Keisuke / Yumoto, Kohei / Suzuki, Tateki / Someya, Taiyou / Fukuhara, Hideo / Kuroda, Yudai / Yamamoto, Tsukasa / Onodera, Taishi / Fukushi, Shuetsu / Maeda, Ken /
    Nakamura-Uchiyama, Fukumi / Hashiguchi, Takao / Hoshino, Atsushi / Maenaka, Katsumi / Takahashi, Yoshimasa

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 4198

    Abstract: SARS-CoV-2 Omicron subvariants have evolved to evade receptor-binding site (RBS) antibodies that exist in diverse individuals as public antibody clones. We rationally selected RBS antibodies resilient to mutations in emerging Omicron subvariants. Y489 ... ...

    Abstract SARS-CoV-2 Omicron subvariants have evolved to evade receptor-binding site (RBS) antibodies that exist in diverse individuals as public antibody clones. We rationally selected RBS antibodies resilient to mutations in emerging Omicron subvariants. Y489 was identified as a site of virus vulnerability and a common footprint of broadly neutralizing antibodies against the subvariants. Multiple Y489-binding antibodies were encoded by public clonotypes and additionally recognized F486, potentially accounting for the emergence of Omicron subvariants harboring the F486V mutation. However, a subclass of antibodies broadly neutralized BA.4/BA.5 variants via hydrophobic binding sites of rare clonotypes along with high mutation-resilience under escape mutation screening. A computationally designed antibody based on one of the Y489-binding antibodies, NIV-10/FD03, was able to bind XBB with any 486 mutation and neutralized XBB.1.5. The structural basis for the mutation-resilience of this Y489-binding antibody group may provide important insights into the design of therapeutics resistant to viral escape.
    MeSH term(s) Humans ; SARS-CoV-2/genetics ; COVID-19 ; Antibodies, Viral ; Binding Sites ; Broadly Neutralizing Antibodies ; Antibodies, Neutralizing ; Spike Glycoprotein, Coronavirus/genetics
    Chemical Substances Antibodies, Viral ; Broadly Neutralizing Antibodies ; Antibodies, Neutralizing ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Language English
    Publishing date 2023-07-14
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-39890-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: High Seroprevalence of Severe Fever with Thrombocytopenia Syndrome Virus Infection among the Dog Population in Thailand.

    Ishijima, Keita / Phichitraslip, Thanmaporn / Naimon, Nattakarn / Ploypichai, Preeyaporn / Kriebkajon, Benyapa / Chinarak, Torntun / Sridaphan, Jirasin / Kritiyakan, Anamika / Prasertsincharoen, Noppadol / Jittapalapong, Sathaporn / Tangcham, Kanate / Rerkamnuaychoke, Worawut / Kuroda, Yudai / Taira, Masakatsu / Tatemoto, Kango / Park, Eunsil / Virhuez-Mendoza, Milagros / Inoue, Yusuke / Harada, Michiko /
    Yamamoto, Tsukasa / Nishino, Ayano / Matsuu, Aya / Maeda, Ken

    Viruses

    2023  Volume 15, Issue 12

    Abstract: Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne zoonotic disease caused by the SFTS virus (SFTSV). In Thailand, three human cases of SFTS were reported in 2019 and 2020, but there was no report of SFTSV infection in animals. ... ...

    Abstract Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne zoonotic disease caused by the SFTS virus (SFTSV). In Thailand, three human cases of SFTS were reported in 2019 and 2020, but there was no report of SFTSV infection in animals. Our study revealed that at least 16.6% of dogs in Thailand were seropositive for SFTSV infection, and the SFTSV-positive dogs were found in several districts in Thailand. Additionally, more than 70% of the serum samples collected at one shelter possessed virus-neutralization antibodies against SFTSV and the near-complete genome sequences of the SFTSV were determined from one dog in the shelter. The dog SFTSV was genetically close to those from Thailand and Chinese patients and belonged to genotype J3. These results indicated that SFTSV has already spread among animals in Thailand.
    MeSH term(s) Animals ; Humans ; Dogs ; Severe Fever with Thrombocytopenia Syndrome/epidemiology ; Severe Fever with Thrombocytopenia Syndrome/veterinary ; Bunyaviridae Infections/epidemiology ; Bunyaviridae Infections/veterinary ; Seroepidemiologic Studies ; Thailand/epidemiology ; Antibodies, Viral ; Phlebovirus/genetics ; Tick-Borne Diseases
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2023-12-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15122403
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Comparison of wiping and rinsing techniques after oral care procedures in critically ill patients during endotracheal intubation and after extubation: A prospective cross-over trial.

    Muramatsu, Keita / Matsuo, Koichiro / Kawai, Yusuke / Yamamoto, Tsukasa / Hara, Yoshitaka / Shimomura, Yasuyo / Yamashita, Chizuru / Nishida, Osamu

    Japan journal of nursing science : JJNS

    2018  Volume 16, Issue 1, Page(s) 80–87

    Abstract: Aim: Endotracheal intubation of critically ill patients increases the risk of aspiration pneumonia, which can be reduced by regular oral care. However, the rinsing of the residual oral contaminants after mechanical cleaning carries the risk of ... ...

    Abstract Aim: Endotracheal intubation of critically ill patients increases the risk of aspiration pneumonia, which can be reduced by regular oral care. However, the rinsing of the residual oral contaminants after mechanical cleaning carries the risk of aspirating the residue during the intubation period. Removing the contaminants by wiping with mouth wipes could be an alternative to rinsing with water because of no additional fluid. This study tested: (i) the amount of oral bacteria during endotracheal intubation and after extubation; and (ii) the changes in the bacterial count during oral care procedures.
    Methods: Thirty-five mechanically ventilated patients in the intensive care unit were enrolled. The amount of bacteria on the dorsal tongue surface was counted before and following oral care and then after the elimination of contaminants either by rinsing with water and suctioning or by wiping with mouth wipes. The oral bacterial amount was compared statistically between the intubation and extubation status and among set time points during the oral care procedure.
    Results: The oral bacterial count was significantly decreased after extubation. During the oral care procedure, the oral bacterial amount was significantly lower after eliminating the contaminants either by rinsing or wiping, with no remarkable difference between the elimination techniques.
    Conclusions: The findings suggest that the oral bacterial amount is elevated during endotracheal intubation, which could increase the risk of aspiration pneumonia. The significant reduction in the bacterial count by wiping indicates that it might be a suitable alternative to rinsing for mechanically ventilated patients.
    MeSH term(s) Aged ; Airway Extubation ; Bacteria/isolation & purification ; Colony Count, Microbial ; Critical Illness ; Cross-Over Studies ; Female ; Humans ; Intensive Care Units ; Intubation, Intratracheal ; Male ; Middle Aged ; Oral Hygiene ; Prospective Studies ; Respiration, Artificial
    Language English
    Publishing date 2018-06-26
    Publishing country Japan
    Document type Comparative Study ; Journal Article
    ZDB-ID 2156618-5
    ISSN 1742-7924 ; 1742-7932
    ISSN (online) 1742-7924
    ISSN 1742-7932
    DOI 10.1111/jjns.12217
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: [Case Report; A severe Pseudomonas aeruginosa community-acquired pneumonia treated by veno-venous extracorporeal membrane oxygenation (ECMO)--a case report].

    Kinoshita, Taku / Yamamoto, Keiko / Toyama, Shinichi / Kuga, Meiji / Yatomi, Mari / Yamamoto, Tsukasa / Kunitomo, Fumio

    Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine

    2015  Volume 104, Issue 1, Page(s) 107–109

    MeSH term(s) Community-Acquired Infections/diagnosis ; Community-Acquired Infections/pathology ; Community-Acquired Infections/therapy ; Extracorporeal Membrane Oxygenation ; Humans ; Male ; Middle Aged ; Pneumonia/diagnosis ; Pneumonia/pathology ; Pneumonia/therapy ; Pseudomonas aeruginosa/isolation & purification ; Respiratory Distress Syndrome, Adult/diagnosis ; Respiratory Distress Syndrome, Adult/therapy ; Treatment Outcome
    Language Japanese
    Publishing date 2015-10-19
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 952816-7
    ISSN 1883-2083 ; 0021-5384
    ISSN (online) 1883-2083
    ISSN 0021-5384
    DOI 10.2169/naika.104.107
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