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Yasuda J, Yasuda H, Nomura R, Matayoshi S, Inaba H, Gongora E, Iwashita N, Shirahata S, Kaji N, Akitomo T, Mitsuhata C, Uchiyama J, Fukuyama T, Matsumoto-Nakano M, Nakano K, Murakami M. Investigation of periodontal disease development and Porphyromonas gulae FimA genotype distribution in small dogs. Sci Rep 2024; 14:5360. [PMID: 38438471 PMCID: PMC10912432 DOI: 10.1038/s41598-024-55842-8] [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: 09/23/2023] [Accepted: 02/28/2024] [Indexed: 03/06/2024] Open
Abstract
In dogs, Porphyromonas gulae is a major periodontal pathogen with 41-kDa proteins polymerizing to form a filamentous structure called fimbriae or pili, termed FimA. FimA is classified into three genotypes: A, B, and C, and there are combinations of types A, B, C, A/B, A/C, B/C, and A/B/C. Periodontal disease is the most common oral disease in small dogs, but the periodontal disease status and P. gulae colonization at each dog age and breed remain unclear. In this study, we stratified 665 small dogs and analyzed the periodontal status and distribution of P. gulae with each FimA genotype. Dogs with periodontal disease and FimA genotype tended to increase with age. The dogs with at least one FimA genotype had significantly more severe periodontal disease compared with P. gulae-negative dogs (P < 0.01). Additionally, periodontal status was significantly associated with specific FimA genotype distribution in Toy Poodles and Chihuahuas (P < 0.05), whereas there was no such association in Dachshunds. These results suggest that the onset of periodontal disease and P. gulae colonization are related and progress with age. The relationship between periodontal disease and FimA genotype may differ depending on the dog breeds.
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Affiliation(s)
- Junya Yasuda
- Department of Molecular Biology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
- Yasuda Veterinary Clinic, Meguro, Tokyo, Japan
| | | | - Ryota Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.
| | - Saaya Matayoshi
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Hiroaki Inaba
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | | | - Naoki Iwashita
- Department of Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
- Bioalch, Fuchu, Tokyo, Japan
| | - So Shirahata
- Department of Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
- Primo Animal Hospital, Sagamihara, Kanagawa, Japan
| | - Noriyuki Kaji
- Department of Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Tatsuya Akitomo
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Chieko Mitsuhata
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Jumpei Uchiyama
- Department of Bacteriology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tomoki Fukuyama
- Department of Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Masaru Murakami
- Department of Molecular Biology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
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Ghadimi D, Fölster-Holst R, Ebsen M, Röcken C, Dörfer C, Uchiyama J, Matsuzaki S, Bockelmann W. Exploring the Interplay between Nutrients, Bacteriophages, and Bacterial Lipases in Host- and Bacteria-mediated Pathogenesis. Endocr Metab Immune Disord Drug Targets 2023; 24:EMIDDT-EPUB-135990. [PMID: 37957846 DOI: 10.2174/0118715303257321231024094904] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 08/30/2023] [Accepted: 09/15/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND AND AIMS Pathogenic bacteria and host cells counteract or neutralize each other's effect in two fundamental ways: Direct invasion and secretion of various substances. Among these, lipases secreted by pathogenic bacteria and host cell lysozyme are key actors. Secreted lipases from pathogenic bacterial are suggested as a key player in the pathogen-host interaction. Among the gut microbial energy sources, glucose and fats have been referred to as one of the best inducers and substrates for bacterial lipases. Enrichment of bacterial growth medium with extra glucose or oil has been shown to induce lipase production in pathogenic bacteria. More recently, research has focused on the role of human gut phage alterations in the onset of dysbiosis because the bacteria-phage interactions can be dramatically affected by the nutrient milieu of the gut. However, the reciprocal role of bacterial lipases and phages in this context has not been well studied and there is no data available about how high glucose or fat availability might modulate the cellular milieu of the pathogenic bacteria-phageeukaryotic host cell interface. The purpose of this study was to evaluate the immunologic outcome of pathogenic bacteria-phage interaction under normal, high glucose, and high butter oil conditions to understand how nutrient availability affects lipase activity in pathogenic bacteria and, ultimately, the eukaryotic host cell responses to pathogenic bacteria-phage interaction. MATERIALS AND METHODS 10 groups of co-cultured T84 and HepG2 cells were treated with Pseudomonas aeruginosa strain PAO1 (P.a PAO1) in the presence and absence of its KPP22 phage and incubated in three different growth media (DMEM, DMEM + glucose and DMEM + butter oil). Structural and physiological (barrier function and cell viability), inflammatory (IL-6 and IL-8), metabolic (glucose and triglycerides), and enzymatic (lipases and lysozyme) parameters were determined. RESULTS Excess glucose or butter oil enhanced additively extracellular lipase activity of P.a PAO1. Excess glucose or butter oil treatments also magnified P. a PAO1- induced secretion of inflammatory signal molecules (IL-1β, IL-6) from co-cultured cells, concomitant with the enhancement of intracellular triglycerides in co-cultured HepG2 cells, these effects being abolished by phage KPP22. CONCLUSION The results of the present study imply that KPP22 phage influences the interplay between food substances, gut bacterial lipases, and the gut cellular milieu. This can be applied in two-way interaction: by affecting the microbial uptake of excess free simple sugars and fats from the gut milieu leading to decreased bacterial lipases and by modulating the immune system of the intestinal -liver axis cells. Further studies are needed to see if the biological consequences of these effects also occur in vivo.
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Affiliation(s)
- Darab Ghadimi
- Department of Microbiology and Biotechnology, Max Rubner-Institut, Hermann-Weigmann-Str 1, D-24103 Kiel, Germany
| | - Regina Fölster-Holst
- Clinic of Dermatology, University Hospital Schleswig-Holstein, Schittenhelmstr. 7, D-24105 Kiel, Germany
| | - Michael Ebsen
- Städtisches MVZ Kiel GmbH (Kiel City Hospital), Department of Pathology, Chemnitzstr. 33, 24116 Kiel, Germany
| | - Christoph Röcken
- Institute of Pathology, Kiel University, University Hospital, Schleswig-Holstein, Arnold-Heller-Straße 3/14, D-24105 Kiel, Germany
| | - Christof Dörfer
- Department of Operative Dentistry and Periodontology, University Medical Center Schleswig-Holstein, Campus Kiel, Germany
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Shigenobu Matsuzaki
- Department of Medical Laboratory Science, Faculty of Health Sciences, Kochi Gakuen University, Kochi, Japan
| | - Wilhelm Bockelmann
- Department of Microbiology and Biotechnology, Max Rubner-Institut, Hermann-Weigmann-Str 1, D-24103 Kiel, Germany
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Kaneki M, Ohira C, Takahashi M, Iwashita N, Takagi Y, Nagane M, Uchiyama J, Fukuyama T. Therapeutic potential of ozone water treatment in alleviating atopic dermatitis symptoms in mouse models: Exploring its bactericidal and direct anti-inflammatory properties. Int Immunopharmacol 2023; 124:110920. [PMID: 37716162 DOI: 10.1016/j.intimp.2023.110920] [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: 06/09/2023] [Revised: 08/30/2023] [Accepted: 09/07/2023] [Indexed: 09/18/2023]
Abstract
Currently, ozone water is utilized for antibacterial and antiviral purposes without any reported safety concerns. Therefore, ozone water may have clinical applications in treating staphylococcal-specific cutaneous diseases, such as atopic dermatitis (AD) and pyoderma. This study aimed to verify the bactericidal effects of ozone water at different concentrations (3 and 11 mg/L) against staphylococcal species in vitro, as well as evaluate the anti-inflammatory effects of ozone water in a mouse model of AD and pyoderma. Initially, the bactericidal properties of several concentrations of ozone water were confirmed with Staphylococcus aureus and methicillin-resistant S. pseudintermedius. Both 3 and 11 mg/L of ozone water exhibited a significant bactericidal effect against staphylococci at less than 100 times dilution. We next examined the cellular cytotoxicity and cytokine production (Interleukin (IL)-6 and IL-8) induced by S. pseudintermedius pre-treated with ozone water, and our findings indicated that cytotoxicity and cytokine production induced by staphylococci were significantly inhibited after ozone water pre-treatment. In vivo experiments showed that ozone water-pre-treated S. pseudintermedius significantly inhibited the development of pyoderma in mice; however, limited effects were observed in a therapeutic setting. Interestingly, ozone water at concentrations of 3 and 11 mg/L exhibits dual bactericidal and anti-inflammatory effects in mice with AD. This observation was corroborated by the significant inhibition of cytokine production in interferon-γ/tumor necrosis factor-stimulated human epidermal keratinocyte cells exposed to ozone in vitro. These findings indicate that administering ozone can be a novel therapeutic approach for managing allergic skin diseases, such as AD.
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Affiliation(s)
- Mao Kaneki
- Laboratory of Veterinary Pharmacology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, Japan
| | - Chiharu Ohira
- Laboratory of Veterinary Pharmacology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, Japan
| | - Miyu Takahashi
- Laboratory of Veterinary Pharmacology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, Japan
| | - Naoki Iwashita
- Laboratory of Veterinary Pharmacology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, Japan; Bioalch Co. Ltd., 3-28 Honshuku-cho, Fuchu-shi, Tokyo, Japan
| | - Yoshiichi Takagi
- Laboratory of Veterinary Pharmacology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, Japan; Japan SLC Inc, 85 Ohara-cho, Kita-ku, Hamamatsu-shi, Shizuoka, Japan
| | - Masaki Nagane
- Laboratory of Veterinary Pharmacology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, Japan; Center for Human and Animal Symbiosis Science, Azabu University, Sagamihara, Kanagawa, Japan
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Tomoki Fukuyama
- Laboratory of Veterinary Pharmacology, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, Japan; Center for Human and Animal Symbiosis Science, Azabu University, Sagamihara, Kanagawa, Japan.
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Ogunsile A, Songnaka N, Sawatdee S, Lertcanawanichakul M, Krobthong S, Yingchutrakul Y, Uchiyama J, Atipairin A. Anti-methicillin-resistant Staphylococcus aureus and antibiofilm activity of new peptides produced by a Brevibacillus strain. PeerJ 2023; 11:e16143. [PMID: 37810790 PMCID: PMC10552749 DOI: 10.7717/peerj.16143] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/29/2023] [Indexed: 10/10/2023] Open
Abstract
Background Methicillin-resistant Staphylococcus aureus (MRSA) is listed as a highly prioritized pathogen by the World Health Organization (WHO) to search for effective antimicrobial agents. Previously, we isolated a soil Brevibacillus sp. strain SPR19 from a botanical garden, which showed anti-MRSA activity. However, the active substances were still unknown. Methods The cell-free supernatant of this bacterium was subjected to salt precipitation, cation exchange, and reversed-phase chromatography. The antimicrobial activity of pure substances was determined by broth microdilution assay. The peptide sequences and secondary structures were characterized by tandem mass spectroscopy and circular dichroism (CD), respectively. The most active anti-MRSA peptide underwent a stability study, and its mechanism was determined through scanning electron microscopy, cell permeability assay, time-killing kinetics, and biofilm inhibition and eradication. Hemolysis was used to evaluate the peptide toxicity. Results The pure substances (BrSPR19-P1 to BrSPR19-P5) were identified as new peptides. Their minimum inhibition concentration (MIC) and minimum bactericidal concentration (MBC) against S. aureus and MRSA isolates ranged from 2.00 to 32.00 and 2.00 to 64.00 µg/mL, respectively. The sequence analysis of anti-MRSA peptides revealed a length ranging from 12 to 16 residues accompanied by an amphipathic structure. The physicochemical properties of peptides were predicted such as pI (4.25 to 10.18), net charge at pH 7.4 (-3 to +4), and hydrophobicity (0.12 to 0.96). The CD spectra revealed that all peptides in the water mainly contained random coil structures. The increased proportion of α-helix structure was observed in P2-P5 when incubated with SDS. P2 (NH2-MFLVVKVLKYVV-COOH) showed the highest antimicrobial activity and high stability under stressed conditions such as temperatures up to 100 °C, solution of pH 3 to 10, and proteolytic enzymes. P2 disrupted the cell membrane and caused bacteriolysis, in which its action was dependent on the incubation time and peptide concentration. Antibiofilm activity of P2 was determined by which the half-maximal inhibition of biofilm formation was observed at 2.92 and 4.84 µg/mL for S. aureus TISTR 517 and MRSA isolate 2468, respectively. Biofilm eradication of tested pathogens was found at the P2 concentration of 128 µg/mL. Furthermore, P2 hemolytic activity was less than 10% at concentrations up to 64 µg/mL, which reflected the hemolysis index thresholds of 32. Conclusion Five novel anti-MRSA peptides were identified from SPR19. P2 was the most active peptide and was demonstrated to cause membrane disruption and cell lysis. The P2 activity was dependent on the peptide concentration and exposure time. This peptide had antibiofilm activity against tested pathogens and was compatible with human erythrocytes, supporting its potential use as an anti-MRSA agent in this post-antibiotic era.
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Affiliation(s)
- Abiodun Ogunsile
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Nuttapon Songnaka
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
- Drug and Cosmetic Excellence Center, Walailak University, Nakhon Si Thammarat, Thailand
| | - Somchai Sawatdee
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
- Drug and Cosmetic Excellence Center, Walailak University, Nakhon Si Thammarat, Thailand
| | | | - Sucheewin Krobthong
- Center of Excellence in Natural Products Chemistry (CENP), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Yodying Yingchutrakul
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Apichart Atipairin
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
- Drug and Cosmetic Excellence Center, Walailak University, Nakhon Si Thammarat, Thailand
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Shirahata S, Katayama Y, Kaneki M, Uchiyama J, Fukuyama T. The Effect of Subacute Oral Folic Acid Treatment on Growth of Porphyromonas gulae in Dogs. J Vet Dent 2023:8987564231189650. [PMID: 37499183 DOI: 10.1177/08987564231189650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Periodontitis is one of the most prevalent infectious diseases in humans and animals. It is a multifactorial disease resulting in attachment loss and tooth loss. Therefore, preventive dentistry, such as daily teeth cleaning or providing dental chews from puppyhood is essential. This study aimed to find an alternative option for preventive dentistry by examining both in vitro and clinically, the antibacterial, antihalitosis, and anti-inflammatory effects of folic acid (FA) in dogs with periodontal disease. The antibacterial and antihalitosis responses of FA were evaluated in vitro using Porphyromonas gulae, a bacterium that plays a significant role in the development of periodontal disease in dogs. Anti-inflammatory responses, such as secretion of IL-1β, IL-6, and IL-8 induced by P. gulae infection in human gingival epithelium have been studied. This study used dogs with P. gulae-associated periodontal diseases and was conducted by providing a dental chew containing 0.13% FA for 28 days. The viability and halitosis production (hydrogen sulfide and methyl mercaptan) of P. gulae was significantly inhibited by FA in a dose and time-dependent manner. IL-1β, IL-6, and IL-8 secretion were also significantly suppressed by FA treatment in a dose-dependent manner. In vitro bactericidal, antihalitosis, and anti-inflammatory effects of FA were confirmed in dogs with P. gulae-associated periodontal disease. One month of oral treatment with 0.13% FA-containing dental chews significantly reduced halitosis as well as P. gulae activity. This study suggests that oral treatment with FA can be a preventive option for periodontal disease in dogs as well as humans.
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Affiliation(s)
- So Shirahata
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Kanagawa, Sagamihara-shi, Japan
- Primo Animal Hospital Sagamiharachuo, Sagamihara-shi, Japan
| | - Yumi Katayama
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Kanagawa, Sagamihara-shi, Japan
| | - Mao Kaneki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Kanagawa, Sagamihara-shi, Japan
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Okayama-shi, Japan
| | - Tomoki Fukuyama
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Kanagawa, Sagamihara-shi, Japan
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Elfadadny A, Uchiyama J, Goto K, Imanishi I, Ragab RF, Nageeb WM, Iyori K, Toyoda Y, Tsukui T, Ide K, Kawamoto K, Nishifuji K. Antimicrobial resistance and genotyping of Pseudomonas aeruginosa isolated from the ear canals of dogs in Japan. Front Vet Sci 2023; 10:1074127. [PMID: 37546340 PMCID: PMC10397403 DOI: 10.3389/fvets.2023.1074127] [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: 10/19/2022] [Accepted: 05/22/2023] [Indexed: 08/08/2023] Open
Abstract
The strong bond between dogs and their owners creates a close association that could result in the transfer of antibiotic-resistant bacteria from canines to humans, potentially leading to the spread of antimicrobial resistance genes. Pseudomonas aeruginosa, a common causative agent of persistent ear infections in dogs, is often resistant to multiple antibiotics. Assessing the antimicrobial resistance profile and genotype of P. aeruginosa is crucial for the appropriate use of veterinary pharmaceuticals. However, in recent years, few studies have been conducted on this bacterium in Japan. We determined the antimicrobial resistance profile and genotype of P. aeruginosa isolated from the ear canal of dogs in Japan in 2020. Analysis of antimicrobial resistance using disk diffusion tests indicated a high frequency of resistance to most antimicrobial agents. Particularly, 29 isolates from the ear canals of the 29 affected dogs (100%) were resistant to cefovecin, cefpodoxime, and florfenicol; however, they were susceptible to cefepime and piperacillin/tazobactam. Only 3.4, 10.3, and 10.3% of the isolates were resistant to ceftazidime, tobramycin, and gentamicin, respectively. Furthermore, upon analyzing the population structure using multilocus sequence typing, a considerably large clonal complex was not observed in the tested isolates. Three isolates, namely ST3881, ST1646, and ST532, were clonally related to the clinically isolated sequence types in Japan (such as ST1831, ST1413, ST1812, and ST1849), which is indicative of dog-to-human transmission. Considering the variation in antibiotic resistance compared to that reported by previous studies and the potential risk of dog-to-human transmission, we believe that the survey for antimicrobial resistance profile and population structure should be continued regularly. However, the prevalence of multidrug-resistant P. aeruginosa in dogs in Japan is not a crisis.
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Affiliation(s)
- Ahmed Elfadadny
- Laboratory of Internal Medicine, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Department of Animal Internal Medicine, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Kazuyoshi Goto
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Ichiro Imanishi
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Rokaia F. Ragab
- Laboratory of Internal Medicine, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Wedad M. Nageeb
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Keita Iyori
- Dermatological and Laboratory Service for Animals, Vet Derm Tokyo, Fujisawa, Japan
| | - Yoichi Toyoda
- Dermatological and Laboratory Service for Animals, Vet Derm Tokyo, Fujisawa, Japan
| | | | - Kaori Ide
- Laboratory of Internal Medicine, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Division of Animal Life Science, Institute of Agriculture, Graduate School, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Keiko Kawamoto
- Laboratory of Immunology and Infection Control, Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Koji Nishifuji
- Laboratory of Internal Medicine, Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Division of Animal Life Science, Institute of Agriculture, Graduate School, Tokyo University of Agriculture and Technology, Fuchu, Japan
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Yagisawa T, Uchiyama J, Takemura-Uchiyama I, Ando S, Ichii O, Murakami H, Matsushita O, Katagiri S. Metataxonomic Analysis of the Uterine Microbiota Associated with Low Fertility in Dairy Cows Using Endometrial Tissues Prior to First Artificial Insemination. Microbiol Spectr 2023; 11:e0476422. [PMID: 37098918 PMCID: PMC10269553 DOI: 10.1128/spectrum.04764-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 04/07/2023] [Indexed: 04/27/2023] Open
Abstract
The deterioration in reproductive performance in association with low fertility leads to significant economic losses on dairy farms. The uterine microbiota has begun to attract attention as a possible cause of unexplained low fertility. We analyzed the uterine microbiota associated with fertility by 16S rRNA gene amplicon sequencing in dairy cows. First, the alpha (Chao1 and Shannon) and beta (unweighted and weighted UniFrac) diversities of 69 cows at four dairy farms that had passed the voluntary waiting period before the first artificial insemination (AI) were analyzed with respect to factors including farm, housing style, feeding management, parity, and AI frequency to conception. Significant differences were observed in the farm, housing style, and feeding management, except parity and AI frequency to conception. The other diversity metrics did not show significant differences in the tested factors. Similar results were obtained for the predicted functional profile. Next, the microbial diversity analysis of 31 cows at a single farm using weighted UniFrac distance matrices revealed a correlation with AI frequency to conception but not with parity. In correlation with AI frequency to conception, the predicted function profile appeared to be slightly modified and a single bacterial taxon, Arcobacter, was detected. The bacterial associations related to fertility were estimated. Considering these, the uterine microbiota in dairy cows can be varied depending on the farm management practices and may become one of the measures for low fertility. IMPORTANCE We examined the uterine microbiota associated with low fertility in dairy cows derived from four commercial farms via a metataxonomic approach using endometrial tissues prior to the first artificial insemination. The present study provided two new insights into the relevance of uterine microbiota with respect to fertility. First, the uterine microbiota varied depending on housing style and feeding management. Next, a subtle change was observed in functional profile analysis: a formation of uterine microbiota was detected to be different in correlation with fertility in one farm studied. Considering these insights, an examination system on bovine uterine microbiota is hopefully established based on continuous research on this topic.
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Affiliation(s)
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Iyo Takemura-Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Shun Ando
- Hokkaido Agriculture Mutual Aid Association, Sapporo, Japan
| | - Osamu Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
- Laboratory of Agrobiomedical Science, Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
| | - Hironobu Murakami
- Laboratory of Infectious Diseases, School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Osamu Matsushita
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Seiji Katagiri
- Laboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido, Japan
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de Mattos CD, Faith DR, Nemudryi AA, Schmidt AK, Bublitz DC, Hammond L, Kinnersley MA, Schwartzkopf CM, Robinson AJ, Joyce A, Michaels LA, Brzozowski RS, Coluccio A, Xing DD, Uchiyama J, Jennings LK, Eswara P, Wiedenheft B, Secor PR. Polyamines and linear DNA mediate bacterial threat assessment of bacteriophage infection. Proc Natl Acad Sci U S A 2023; 120:e2216430120. [PMID: 36802441 PMCID: PMC9992862 DOI: 10.1073/pnas.2216430120] [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: 09/27/2022] [Accepted: 01/10/2023] [Indexed: 02/23/2023] Open
Abstract
Monitoring the extracellular environment for danger signals is a critical aspect of cellular survival. However, the danger signals released by dying bacteria and the mechanisms bacteria use for threat assessment remain largely unexplored. Here, we show that lysis of Pseudomonas aeruginosa cells releases polyamines that are subsequently taken up by surviving cells via a mechanism that relies on Gac/Rsm signaling. While intracellular polyamines spike in surviving cells, the duration of this spike varies according to the infection status of the cell. In bacteriophage-infected cells, intracellular polyamines are maintained at high levels, which inhibits replication of the bacteriophage genome. Many bacteriophages package linear DNA genomes and linear DNA is sufficient to trigger intracellular polyamine accumulation, suggesting that linear DNA is sensed as a second danger signal. Collectively, these results demonstrate how polyamines released by dying cells together with linear DNA allow P. aeruginosa to make threat assessments of cellular injury.
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Affiliation(s)
| | - Dominick R. Faith
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - Artem A. Nemudryi
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT59717
| | - Amelia K. Schmidt
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - DeAnna C. Bublitz
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - Lauren Hammond
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL33620
| | | | | | - Autumn J. Robinson
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - Alex Joyce
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - Lia A. Michaels
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | | | - Alison Coluccio
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - Denghui David Xing
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama700-8558, Japan
| | - Laura K. Jennings
- Division of Biological Sciences, University of Montana, Missoula, MT59812
| | - Prahathees Eswara
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL33620
| | - Blake Wiedenheft
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT59717
| | - Patrick R. Secor
- Division of Biological Sciences, University of Montana, Missoula, MT59812
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9
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Shirahata S, Iwashita N, Sasaki R, Nomura R, Murakami M, Yasuda J, Yasuda H, Nakajima K, Inaba H, Matsumoto-Nakano M, Nakano K, Uchiyama J, Fukuyama T. Possible association of fimA genotype of Porphyromonas gulae with the severity of periodontal disease and the number of permanent teeth in dogs. Front Vet Sci 2023; 10:1022838. [PMID: 36814464 PMCID: PMC9939633 DOI: 10.3389/fvets.2023.1022838] [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: 08/19/2022] [Accepted: 01/12/2023] [Indexed: 02/08/2023] Open
Abstract
Previous research has demonstrated that Porphyromonas gulae (P. gulae) significantly contributes to the development of periodontal disease in dogs. Porphyromonas gulae is divided into three subtypes according to the 41-kDa filamentous appendage (fimA), defined as types A, B, and C. This study aimed to elucidate the association between fimA type of P. gulae with the number of permanent teeth, reflecting the severity of periodontal disease. Two hundred twenty-five dogs were categorized by P. gulae fimA type as negative, type A dominant, type B dominant, and type C dominant. The stage of periodontal disease in P. gulae-positive dogs increased with age, particularly in type C dominant dogs. Correspondingly, the number of permanent teeth in P. gulae fimA type C-dominant dogs was significantly lower than that of P. gulae-negative dogs, suggesting there is a significant association between fimA type of P. gulae and the number of permanent teeth resulting from the development of periodontal disease.
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Affiliation(s)
- So Shirahata
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan,Primo Animal Hospital Sagamiharachuo, Sagamihara, Kanagawa, Japan
| | - Naoki Iwashita
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan,Bioalchemis, Fuchu, Tokyo, Japan
| | - Rie Sasaki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Masaru Murakami
- Laboratory of Molecular Biology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Junya Yasuda
- SPECTRUM LAB. JAPAN Co., LTD., Yasuda Veterinary Clinic, Tokyo, Japan
| | - Hidemi Yasuda
- AlphaVets Co., LTD., Yasuda Veterinary Clinic, Tokyo, Japan
| | | | - Hiroaki Inaba
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Okayama, Japan
| | - Tomoki Fukuyama
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan,*Correspondence: Tomoki Fukuyama ✉
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10
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Turner D, Shkoporov AN, Lood C, Millard AD, Dutilh BE, Alfenas-Zerbini P, van Zyl LJ, Aziz RK, Oksanen HM, Poranen MM, Kropinski AM, Barylski J, Brister JR, Chanisvili N, Edwards RA, Enault F, Gillis A, Knezevic P, Krupovic M, Kurtböke I, Kushkina A, Lavigne R, Lehman S, Lobocka M, Moraru C, Moreno Switt A, Morozova V, Nakavuma J, Reyes Muñoz A, Rūmnieks J, Sarkar BL, Sullivan MB, Uchiyama J, Wittmann J, Yigang T, Adriaenssens EM. Abolishment of morphology-based taxa and change to binomial species names: 2022 taxonomy update of the ICTV bacterial viruses subcommittee. Arch Virol 2023; 168:74. [PMID: 36683075 PMCID: PMC9868039 DOI: 10.1007/s00705-022-05694-2] [Citation(s) in RCA: 92] [Impact Index Per Article: 92.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
This article summarises the activities of the Bacterial Viruses Subcommittee of the International Committee on Taxonomy of Viruses for the period of March 2021-March 2022. We provide an overview of the new taxa proposed in 2021, approved by the Executive Committee, and ratified by vote in 2022. Significant changes to the taxonomy of bacterial viruses were introduced: the paraphyletic morphological families Podoviridae, Siphoviridae, and Myoviridae as well as the order Caudovirales were abolished, and a binomial system of nomenclature for species was established. In addition, one order, 22 families, 30 subfamilies, 321 genera, and 862 species were newly created, promoted, or moved.
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Affiliation(s)
- Dann Turner
- School of Applied Sciences, College of Health, Science and Society, University of the West of England, Bristol, BS16 1QY UK
| | - Andrey N. Shkoporov
- Department of Medicine and APC Microbiome Ireland, School of Microbiology, University College Cork, Cork, Ireland
| | - Cédric Lood
- Department of Biosystems, Faculty of Bioscience Engineering, KU, Leuven, Belgium
| | - Andrew D. Millard
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester, UK
| | - Bas E. Dutilh
- Institute of Biodiversity, Faculty of Biological Sciences, Cluster of Excellence Balance of the Microverse, Friedrich-Schiller-University Jena, 07743 Jena, Germany
- Theoretical Biology and Bioinformatics, Science for Life, Utrecht University, Padualaan 8, Utrecht, 3584 CH The Netherlands
| | | | - Leonardo J. van Zyl
- Institute for Microbial Biotechnology and Metagenomics (IMBM), Department of Biotechnology, University of the Western Cape, 7535 Bellville, Cape Town, South Africa
| | - Ramy K. Aziz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
- Egypt/ and Children’s Cancer Hospital, 57357, 11617 Cairo, Egypt
| | - Hanna M. Oksanen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9, 00014 Helsinki, Finland
| | - Minna M. Poranen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9, 00014 Helsinki, Finland
| | - Andrew M. Kropinski
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1 Canada
| | - Jakub Barylski
- Department of Molecular Virology, Adam Mickiewicz University in Poznan, Poznan, Poland
| | - J Rodney Brister
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894 USA
| | - Nina Chanisvili
- The Eliava Institute of Bacteriophage, Microbiology and Virology, Tbilisi, Georgia
| | - Rob A. Edwards
- Flinders Accelerator for Microbiome Exploration, Adelaide, Australia
| | - François Enault
- Université Clermont Auvergne, CNRS, LMGE, Clermont-Ferrand, France
| | - Annika Gillis
- Laboratory of Food and Environmental Microbiology, Université Catholique de Louvain, Croix du Sud 2, L7.05.12, 1348 Louvain-la-Neuve, Belgium
| | - Petar Knezevic
- PK Lab, Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, Novi Sad, Serbia
| | - Mart Krupovic
- Archaeal Virology Unit, Institut Pasteur, Université Paris Cité, CNRS UMR6047, Paris, 75015 France
| | - Ipek Kurtböke
- School of Science, Technology and Engineering, University of the Sunshine Coast, 4558 Maroochydore, BC, QLD Australia
| | - Alla Kushkina
- Department of Bacteriophage molecular genetics, D.K.Zabolotny Institute of microbiology and virology, NAS of Ukraine, 154 Acad. Zabolotnoho str, 03143 Kyiv, Ukraine
- Department of Bacterial molecular genetics, Faculty of biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland
| | - Rob Lavigne
- Department of Biosystems, Faculty of Bioscience Engineering, KU, Leuven, Belgium
| | - Susan Lehman
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD USA
| | - Malgorzata Lobocka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Cristina Moraru
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Oldenburg, Germany
| | - Andrea Moreno Switt
- Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas y Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Vera Morozova
- Laboratory of Molecular Microbiology, Institute of Chemical Biology and Fundamental Medicine SB RAS, Novosibirsk, Russia
| | - Jesca Nakavuma
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, P. O. Box 7062, Kampala, Uganda
| | - Alejandro Reyes Muñoz
- Max Planck Tandem Group in Computational Biology, Departamento de Ciencias Biológicas, Universidad de los Andes, 111711 Bogotá, Colombia
| | - Jānis Rūmnieks
- Latvian Biomedical Research and Study Center, 1067 Riga, Latvia
| | - BL Sarkar
- ICMR-National Institute of Cholera and Enteric Diseases (NICED), Kolkata, India
| | - Matthew B. Sullivan
- Departments of Microbiology and Civil, Environmental, and Geodetic Engineering, Ohio State University, Columbus, OH 43210 USA
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1, Tsushima-naka, Kita-ku, Okayama, 7008530 Japan
| | - Johannes Wittmann
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Inhoffenstr. 7B, 38124 Braunschweig, Germany
| | - Tong Yigang
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029 China
| | - Evelien M. Adriaenssens
- Quadram Institute Bioscience, Rosalind Franklin Road, Norwich Research Park, Norwich, NR4 7UQ UK
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11
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Imanishi I, Asahina R, Hayashi S, Uchiyama J, Hisasue M, Yamasaki M, Murata Y, Morikawa S, Mizutani T, Sakaguchi M. Guest edited collection serological study of SARS-CoV-2 antibodies in japanese cats using protein-A/G-based ELISA. BMC Vet Res 2022; 18:443. [PMID: 36539820 PMCID: PMC9767852 DOI: 10.1186/s12917-022-03527-7] [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: 11/25/2021] [Accepted: 11/24/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Little is known about the epidemic status of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in cats in Japan due to insufficiently reliable seroepidemiological analysis methods that are easy to use in cats. RESULTS We developed a protein-A/G-based enzyme-linked immunosorbent assay (ELISA) to detect antibodies against SARS-CoV-2 in cats. The assay was standardized using positive rabbit antibodies against SARS-CoV-2. The ELISA results were consistent with those of a conventional anti-feline-immunoglobulin-G (IgG)-based ELISA. To test the protein-A/G-based ELISA, we collected blood samples from 1,969 cats that had been taken to veterinary clinics in Japan from June to July 2020 and determined the presence of anti-SARS-CoV-2 antibodies. Nine cats were found to have SARS-CoV-2 S1-specific IgG, of which 4 had recombinant receptor-binding domain-specific IgG. Of those 9 samples, one showed neutralizing activity. Based on these findings, we estimated that the prevalence of SARS-CoV-2 neutralizing antibodies in cats in Japan was 0.05% (1/1,969 samples). This prevalence was consistent with the prevalence of neutralizing antibodies against SARS-CoV-2 in humans in Japan according to research conducted at that time. CONCLUSIONS Protein-A/G-based ELISA has the potential to be a standardized method for measuring anti-SARS-CoV-2 antibodies in cats. The infection status of SARS-CoV-2 in cats in Japan might be linked to that in humans.
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Affiliation(s)
- Ichiro Imanishi
- grid.410786.c0000 0000 9206 2938Department of Microbiology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku Sagamihara-shi, Kanagawa, Kanagawa Japan
| | - Ryota Asahina
- grid.258799.80000 0004 0372 2033Faculty of Medicine, Department of Dermatology, Kyoto University, Kyoto, Japan
| | - Shunji Hayashi
- grid.410786.c0000 0000 9206 2938Department of Microbiology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku Sagamihara-shi, Kanagawa, Kanagawa Japan
| | - Jumpei Uchiyama
- grid.261356.50000 0001 1302 4472Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Masaharu Hisasue
- grid.252643.40000 0001 0029 6233Center for Human and Animal Symbiosis Science, Azabu University, Kanagawa, Japan
| | - Masahiro Yamasaki
- grid.411792.80000 0001 0018 0409Department of Veterinary Internal Medicine, Iwate University, Iwate, Japan
| | - Yoshiteru Murata
- grid.136594.c0000 0001 0689 5974Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, Tokyo, Japan ,Murata Animal Hospital, Chiba, Japan
| | - Shigeru Morikawa
- grid.444568.f0000 0001 0672 2184Faculty of Veterinary Medicine, Department of Microbiology, Okayama University of Science, Ehime, Japan
| | - Tetsuya Mizutani
- grid.136594.c0000 0001 0689 5974Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, Tokyo, Japan
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12
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Imanishi I, Iyori K, Také A, Asahina R, Tsunoi M, Hirano R, Uchiyama J, Toyoda Y, Sakaguchi Y, Hayashi S. Antibiotic-resistant status and pathogenic clonal complex of canine Streptococcus canis-associated deep pyoderma. BMC Vet Res 2022; 18:395. [DOI: 10.1186/s12917-022-03482-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 10/22/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Streptococcus canis causes deep pyoderma in canines, which raises concerns about the risk of isolates from lesions acquiring an antibiotic-resistant phenotype. It is necessary to identify effective antibiotics and the characteristics of the pathogenic cluster for S. canis-associated deep pyoderma.
Results
The signalment, molecular typing, and antibiotic-resistant status of S. canis isolated from deep pyoderma lesions (27 strains) and oral cavities (26 strains) were analyzed. Older dogs tended to have S. canis-associated deep pyoderma (15 of 27 dogs over 10 years old). Veterinarians chose quinolones for 10/16 cases (63%), even though the rate of quinolone-resistant strains of S. canis is 38–59%. Although 70% of the strains showed resistance to three or more antibiotic classes (37/53), 94% (50/53) strains showed sensitivity for penicillins. We also identified β-lactamase activity among penicillin-resistant strains of S. canis. Clonal complex 13 (CC13) was detected only in lesions and formed independent clusters in the phylogenetic tree. One strain of CC13 was resistant to the anti-methicillin-resistant Staphylococcus aureus drugs, vancomycin and linezolid.
Conclusion
Although antibiotic-resistant strains of S. canis are isolated at a high rate, they can currently be treated with β-lactamase-inhibiting penicillins. CC13 may be a pathogenic cluster with high levels of antibiotics resistance.
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13
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Uchiyama J, Takemura-Uchiyama I, Gotoh K, Kato SI, Sakaguchi Y, Murakami H, Fukuyama T, Kaneki M, Matsushita O, Matsuzaki S. Phylogenic analysis of new viral cluster of large phages with unusual DNA genomes containing uracil in place of thymine in gene-sharing network, using phages S6 and PBS1 and relevant uncultured phages derived from sewage metagenomics. Virus Res 2022; 319:198881. [PMID: 35934259 DOI: 10.1016/j.virusres.2022.198881] [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: 03/29/2022] [Revised: 06/28/2022] [Accepted: 07/28/2022] [Indexed: 11/19/2022]
Abstract
Bacteriophages (phages) are the most diverse and abundant life-form on Earth. Jumbophages are phages with double-stranded DNA genomes longer than 200 kbp. Among these, some jumbophages with uracil in place of thymine as a nucleic acid base, which we have tentatively termed "dU jumbophages" in this study, have been reported. Because the dU jumbophages are considered to be a living fossil from the RNA world, the evolutionary traits of dU jumbophages are of interest. In this study, we examined the phylogeny of dU jumbophages. First, tBLASTx analysis of newly sequenced dU jumbophages such as Bacillus phage PBS1 and previously isolated Staphylococcus phage S6 showed similarity to the other dU jumbophages. Second, we detected the two partial genome sequences of uncultured phages possibly relevant to dU jumbophages, scaffold_002 and scaffold_007, from wastewater metagenomics. Third, according to the gene-sharing network analysis, the dU jumbophages, including phages PBS1 and S6, and uncultured phage scaffold_002 formed a cluster, which suggested a new viral subfamily/family. Finally, analyses of the phylogenetic relationship with other phages showed that the dU jumbophage cluster, which had two clades of phages infecting Gram-negative and Gram-positive bacteria, diverged from the single ancestral phage. These findings together with previous reports may imply that dU jumbophages evolved from the same origin before divergence of Gram-negative and Gram-positive bacteria.
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Affiliation(s)
- Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan.
| | - Iyo Takemura-Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Kazuyoshi Gotoh
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Shin-Ichiro Kato
- Research Institute of Molecular Genetics, Kochi University, Kochi 783-0093, Japan
| | - Yoshihiko Sakaguchi
- Department of Microbiology, Kitasato University School of Medicine, Kanagawa 252-0374, Japan
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Tomoki Fukuyama
- School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Mao Kaneki
- School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Osamu Matsushita
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Shigenobu Matsuzaki
- Department of Medical Laboratory Science, Faculty of Health Sciences, Kochi Gakuen University, Kochi 780-0955, Japan
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14
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Uchiyama J, Osumi T, Mizukami K, Fukuyama T, Shima A, Unno A, Takemura-Uchiyama I, Une Y, Murakami H, Sakaguchi M. Characterization of the oral and fecal microbiota associated with atopic dermatitis in dogs selected from a purebred Shiba Inu colony. Lett Appl Microbiol 2022; 75:1607-1616. [PMID: 36067033 DOI: 10.1111/lam.13828] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/21/2022] [Accepted: 08/31/2022] [Indexed: 11/30/2022]
Abstract
Atopic dermatitis (AD) is a chronic and relapsing multifactorial inflammatory skin disease that also affects dogs. The oral and gut microbiota are associated with many disorders, including allergy. Few studies have addressed the oral and gut microbiota in dogs, although the skin microbiota has been studied relatively well in these animals. Here, we studied the AD-associated oral and gut microbiota in 16 healthy and nine AD dogs from a purebred Shiba Inu colony. We found that the diversity of the oral microbiota was significantly different among the dogs, whereas no significant difference was observed in the gut microbiota. Moreover, a differential abundance analysis detected the Family_XIII_AD3011_group (Anaerovoracaceae) in the gut microbiota of AD dogs; however, no bacterial taxa were detected in the oral microbiota. Third, the comparison of the microbial co-occurrence patterns between AD and healthy dogs identified differential networks in which the bacteria in the oral microbiota that were most strongly associated with AD were related with human periodontitis, whereas those in the gut microbiota were related with dysbiosis and gut inflammation. These results suggest that AD can alter the oral and gut microbiota in dogs.
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Affiliation(s)
- Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.,School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Takafumi Osumi
- Laboratory of Veterinary Internal Medicine, Division of Animal Life Science, Graduate School, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Keijiro Mizukami
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.,Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Tomoki Fukuyama
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Ayaka Shima
- Anicom Specialty Medical Institute Inc., Tokyo, Japan
| | - Asaka Unno
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Iyo Takemura-Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.,School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Yumi Une
- Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
| | | | - Masahiro Sakaguchi
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.,Institute of Tokyo Environmental Allergy, Tokyo, Japan
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15
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Neo S, Takemura-Uchiyama I, Uchiyama J, Murakami H, Shima A, Kayanuma H, Yokoyama T, Takagi S, Kanai E, Hisasue M. Screening of bacterial DNA in bile sampled from healthy dogs and dogs suffering from liver- or gallbladder-associated disease. J Vet Med Sci 2022; 84:1019-1022. [PMID: 35650165 PMCID: PMC9353097 DOI: 10.1292/jvms.22-0090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Although the biliary system is generally aseptic, gallbladder microbiota has been reported in humans and some animals apart from dogs. We screened and analyzed the bacterial
deoxyribonucleic acid in canine gallbladders using bile sampled from 7 healthy dogs and 52 dogs with liver- or gallbladder-associated disease. PCR screening detected bacteria in 17.3% of
diseased dogs (9/52) and none in healthy dogs. Microbiota analysis of PCR-positive samples showed that the microbial diversity differed between liver- and gallbladder-associated disease
groups. Thus, a specific bacterial community appears to occur at a certain frequency in the bile of diseased dogs.
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Affiliation(s)
| | - Iyo Takemura-Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University
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16
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Kishimoto T, Ishida W, Nakajima I, Ujihara T, Suzuki T, Uchiyama J, Matsuzaki S, Fukuda K. Intracameral Bacteriophage Injection as Postoperative Prophylaxis for Enterococcus faecalis-Induced Endophthalmitis After Cataract Surgery in Rabbits. Transl Vis Sci Technol 2022; 11:2. [PMID: 35363260 PMCID: PMC8976926 DOI: 10.1167/tvst.11.4.2] [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] [Indexed: 11/26/2022] Open
Abstract
Purpose Post–cataract surgery bacterial endophthalmitis is a serious postoperative complication, and Enterococcus spp.–induced endophthalmitis reportedly has a particularly poor visual prognosis. This study aimed to demonstrate the prophylactic effect of postoperative intracameral phage administration in Enterococcus faecalis–induced endophthalmitis after cataract surgery in rabbits. Methods Endophthalmitis was induced in rabbits by injecting E. faecalis into the anterior chamber just after lensectomy while simultaneously administering either phage phiEF24C-P2 or vehicle. Retinal function was evaluated using electroretinography. The number of viable bacteria and myeloperoxidase (MPO) activity in the eye and histopathologic examinations were analyzed 48 hours after infection. Results In the vehicle-treated group, retinal function at 24 hours after infection was impaired, and the number of viable bacteria and MPO activity in the eye increased 48 hours later. In the phage-administered group, retinal function was maintained; the number of viable bacteria and MPO activity were significantly suppressed. Histopathologic examinations showed disruption of the retinal layers and the presence of numerous E. faecalis in the lens capsule and vitreous cavity in vehicle-treated eyes. In contrast, retinal structures were intact, and no E. faecalis staining was observed in phage-treated eyes. No retinal dysfunction was observed in the group that received phage only without lensectomy; almost no phage was detected in the eyes after 14 days of treatment. Conclusions Phage administration in the anterior chamber did not cause retinal dysfunction and suppressed postoperative endophthalmitis in rabbits. Translational Relevance In vivo results of intracameral phage administration suggest that phages are a promising prophylactic candidate for postoperative endophthalmitis.
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Affiliation(s)
- Tatsuma Kishimoto
- Department of Ophthalmology and Visual Science, Kochi Medical School, Kochi University, Kochi, Japan
| | - Waka Ishida
- Department of Ophthalmology and Visual Science, Kochi Medical School, Kochi University, Kochi, Japan
| | - Isana Nakajima
- Department of Ophthalmology and Visual Science, Kochi Medical School, Kochi University, Kochi, Japan
| | | | - Takashi Suzuki
- Department of Ophthalmology, Toho University, Tokyo, Japan
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Shigenobu Matsuzaki
- Department of Medical Laboratory Science, Faculty of Health Sciences, Kochi Gakuen University, Kochi, Japan
| | - Ken Fukuda
- Department of Ophthalmology and Visual Science, Kochi Medical School, Kochi University, Kochi, Japan
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17
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Yoshida M, Mizukami K, Hisasue M, Imanishi I, Kurata K, Ochiai M, Itoh M, Nasukawa T, Uchiyama J, Tsujimoto H, Sakaguchi M. Anaphylaxis after vaccination for cats in Japan. J Vet Med Sci 2021; 84:149-152. [PMID: 34789596 PMCID: PMC8810323 DOI: 10.1292/jvms.21-0437] [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: 11/22/2022] Open
Abstract
Severe adverse reactions in cats after vaccination were examined from 316 cases reported to the Ministry of Agriculture, Forestry and Fisheries (MAFF) in Japan during 15-year period from April 2004 to March 2019. We found that 130 (41%) showed anaphylaxis, and 99 (76%) of the 130 cases of anaphylaxis resulted in death. Veterinarians should be well prepared to deal with vaccine-associated anaphylaxis in cats. Bovine serum albumin (BSA) as indicator of purification was detected at high levels in commercially available feline vaccines. BSA might derive from fetal calf serum in culture media. This study provides useful information about anaphylaxis including critical details of the potential clinical signs associated with adverse events to feline vaccination.
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Affiliation(s)
- Megumi Yoshida
- Laboratory of Veterinary Microbiology I, Azabu University.,ITEA Inc., Institute of Tokyo Environmental Allergy
| | | | | | - Ichiro Imanishi
- Department of Microbiology, Kitasato University School of Medicine
| | - Keigo Kurata
- ITEA Inc., Institute of Tokyo Environmental Allergy
| | - Masaki Ochiai
- Department of Quality Assurance, Radiation Safety, and Information Management, National Institute of Infectious Diseases
| | - Masato Itoh
- Laboratory of Veterinary Microbiology I, Azabu University
| | | | | | - Hajime Tsujimoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, Azabu University.,ITEA Inc., Institute of Tokyo Environmental Allergy
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18
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Kamiya R, Uchiyama J, Matsuzaki S, Murata K, Iwasaki K, Miyazaki N. Acid-stable capsid structure of Helicobacter pylori bacteriophage KHP30 by single-particle cryoelectron microscopy. Structure 2021; 30:300-312.e3. [PMID: 34597601 DOI: 10.1016/j.str.2021.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 07/04/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
The acid-stable capsid structures of Helicobacter pylori phages KHP30 and KHP40 are solved at 2.7 and 3.0 Å resolutions by cryoelectron microscopy, respectively. The capsids have icosahedral T = 9 symmetry and consist of each 540 copies of 2 structural proteins, a major capsid protein, and a cement protein. The major capsid proteins form 12 pentagonal capsomeres occupying icosahedral vertexes and 80 hexagonal capsomeres located at icosahedral faces and edges. The major capsid protein has a unique protruding loop extending to the neighboring subunit that stabilizes hexagonal capsomeres. Furthermore, the capsid is decorated with trimeric cement proteins with a jelly roll motif. The cement protein trimer sits on the quasi-three-fold axis formed by three major capsid protein capsomeres, thereby enhancing the particle stability by connecting these capsomeres. Sequence and structure comparisons between the related Helicobacter pylori phages suggest a possible mechanism of phage adaptation to the human gastric environment.
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Affiliation(s)
- Ryosuke Kamiya
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8777, Japan
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan; Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Shigenobu Matsuzaki
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Kochi Gakuen University, Kochi 780-0955, Japan
| | - Kazuyoshi Murata
- National Institute for Physiological Sciences, Okazaki, Aichi 444-8585, Japan
| | - Kenji Iwasaki
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8777, Japan
| | - Naoyuki Miyazaki
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8777, Japan.
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19
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Yoshida M, Mizukami K, Kurata K, Nasukawa T, Uchiyama J, Sakaguchi M. New dot-blot method for evaluating the effect of inactivators on mite and Japanese cedar pollen allergens. Biosci Biotechnol Biochem 2021; 85:2089-2092. [PMID: 34410303 DOI: 10.1093/bbb/zbab146] [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: 06/22/2021] [Accepted: 08/06/2021] [Indexed: 11/12/2022]
Abstract
As a method of evaluating the effect of inactivators on allergens while suppressing the effect of inactivator on the assay, we developed new dot-blot method that combines immunostaining and protein detection methods. This method is useful for evaluating whether the inactivator can inactivate allergens rather than removing them from the assay.
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Affiliation(s)
- Megumi Yoshida
- Department of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,ITEA Inc., Institute of Tokyo Environmental Allergy, Tokyo, Japan
| | - Keijiro Mizukami
- Department of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Keigo Kurata
- ITEA Inc., Institute of Tokyo Environmental Allergy, Tokyo, Japan
| | - Tadahiro Nasukawa
- Department of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Jumpei Uchiyama
- Department of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Masahiro Sakaguchi
- Department of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Sagamihara, Japan.,ITEA Inc., Institute of Tokyo Environmental Allergy, Tokyo, Japan
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20
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Matsui H, Uchiyama J, Ogata M, Nasukawa T, Takemura-Uchiyama I, Kato SI, Murakami H, Higashide M, Hanaki H. Use of Recombinant Endolysin to Improve Accuracy of Group B Streptococcus Tests. Microbiol Spectr 2021; 9:e0007721. [PMID: 34378963 PMCID: PMC8552716 DOI: 10.1128/spectrum.00077-21] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/09/2021] [Indexed: 12/17/2022] Open
Abstract
Group B Streptococcus (GBS) causes serious neonatal infection via vertical transmission. The prenatal GBS screening test is performed at the late stage of pregnancy to avoid risks of infection. In this test, enrichment culture is performed, followed by GBS identification. Selective medium is used for the enrichment; however, Enterococcus faecalis, which is a potential contaminant in swab samples, can interfere with the growth of GBS. Such bacterial contamination can lead to false-negative results. Endolysin, a bacteriophage-derived enzyme, degrades peptidoglycan in the bacterial cell wall; it is a promising antimicrobial agent for selectively eliminating specific bacterial genera/species. In this study, we used the recombinant endolysin EG-LYS, which is specific to E. faecalis; the endolysin potentially enriched GBS in the selective culture. First, in the false-negative model (coculture of GBS and E. faecalis, which disabled GBS detection in the subsequent GBS identification test), EG-LYS treatment at 0.1 mg/ml improved GBS detection. Next, we used 548 vaginal swabs to test the efficacy of EG-LYS treatment in improving GBS detection. EG-LYS treatment (0.1 mg/ml) increased the GBS-positive ratio to 17.9%, compared to 15.7% in the control (phosphate-buffered saline [PBS] treatment). In addition, there were an increased number of GBS colonies under EG-LYS treatment in some samples. The results were supported by the microbiota analysis of the enriched cultures. In conclusion, EG-LYS treatment of the enrichment culture potentially improves the accuracy of the prenatal GBS screening test. IMPORTANCE Endolysin is a bacteriophage-derived enzyme that degrades the peptidoglycan in the cell wall of host bacteria; it could be used as an antimicrobial agent for selectively eliminating specific bacterial genera/species. Group B Streptococcus (GBS) causes neonatal infection via vertical transmission; prenatal GBS screening test, in which enrichment culture is followed by bacterial identification, is used to detect the presence of GBS in pregnant women. However, the presence of commensal bacteria such as Enterococcus faecalis in clinical specimens can inhibit GBS growth in the selective enrichment culture, resulting in false-negative result. Here, we demonstrated that the application of originally isolated endolysin in the enrichment culture improved the test accuracy by inhibiting unwanted E. faecalis growth and therefore avoiding false-negative results, not only in experimental settings, but also in tests using vaginal swabs.
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Affiliation(s)
- Hidehito Matsui
- Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
| | - Jumpei Uchiyama
- Department of Bacteriology, Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Masaya Ogata
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Tadahiro Nasukawa
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | | | | | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | | | - Hideaki Hanaki
- Ōmura Satoshi Memorial Institute, Kitasato University, Tokyo, Japan
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21
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Krupovic M, Turner D, Morozova V, Dyall-Smith M, Oksanen HM, Edwards R, Dutilh BE, Lehman SM, Reyes A, Baquero DP, Sullivan MB, Uchiyama J, Nakavuma J, Barylski J, Young MJ, Du S, Alfenas-Zerbini P, Kushkina A, Kropinski AM, Kurtböke I, Brister JR, Lood C, Sarkar BL, Yigang T, Liu Y, Huang L, Wittmann J, Chanishvili N, van Zyl LJ, Rumnieks J, Mochizuki T, Jalasvuori M, Aziz RK, Łobocka M, Stedman KM, Shkoporov AN, Gillis A, Peng X, Enault F, Knezevic P, Lavigne R, Rhee SK, Cvirkaite-Krupovic V, Moraru C, Moreno Switt AI, Poranen MM, Millard A, Prangishvili D, Adriaenssens EM. Bacterial Viruses Subcommittee and Archaeal Viruses Subcommittee of the ICTV: update of taxonomy changes in 2021. Arch Virol 2021; 166:3239-3244. [PMID: 34417873 PMCID: PMC8497307 DOI: 10.1007/s00705-021-05205-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In this article, we – the Bacterial Viruses Subcommittee and the Archaeal Viruses Subcommittee of the International Committee on Taxonomy of Viruses (ICTV) – summarise the results of our activities for the period March 2020 – March 2021. We report the division of the former Bacterial and Archaeal Viruses Subcommittee in two separate Subcommittees, welcome new members, a new Subcommittee Chair and Vice Chair, and give an overview of the new taxa that were proposed in 2020, approved by the Executive Committee and ratified by vote in 2021. In particular, a new realm, three orders, 15 families, 31 subfamilies, 734 genera and 1845 species were newly created or redefined (moved/promoted).
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Affiliation(s)
- Mart Krupovic
- Archaeal Virology Unit, Institut Pasteur, Paris, France
| | - Dann Turner
- Department of Applied Sciences, Faculty of Health and Applied Sciences, University of the West of England, Bristol, UK
| | - Vera Morozova
- Laboratory of Molecular Microbiology, Institute of Chemical Biology and Fundamental Medicine SB RAS, Novosibirsk, Russia
| | - Mike Dyall-Smith
- Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Australia
| | - Hanna M Oksanen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Rob Edwards
- Flinders Accelerator for Microbiome Exploration, Adelaide, Australia
| | - Bas E Dutilh
- Theoretical Biology and Bioinformatics, Department of Biology, Utrecht University, Utrecht, Netherlands
| | - Susan M Lehman
- Center for Biologics Evaluation and Research, US Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD, 20903, USA
| | - Alejandro Reyes
- Max Planck Tandem Group in Computational Biology, Department of Biological Sciences, Universidad de Los Andes, Bogotá, Colombia
| | | | - Matthew B Sullivan
- Department of Microbiology, The Ohio State University, Columbus, OH, 43210, USA.,Department Civil, Environmental, and Geodetic Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Sagamihara, Japan
| | - Jesca Nakavuma
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Jakub Barylski
- Department of Molecular Virology, Faculty of Biology, Institute of Experimental Biology, Adam Mickiewicz University in Poznan, Collegium Biologicum-Umultowska 89, 61-614, Poznan, Poland
| | - Mark J Young
- Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT, USA
| | - Shishen Du
- Department of Microbiology, College of Life Sciences, Wuhan University, Wuhan, China
| | | | - Alla Kushkina
- Zabolotny Institute of Microbiology and Virology, NAS of Ukraine, Kyiv, Ukraine
| | - Andrew M Kropinski
- Department of Food Science, University of Guelph, Guelph, Canada.,Department of Pathobiology, University of Guelph, Guelph, Canada
| | - Ipek Kurtböke
- University of the Sunshine Coast, Sippy Downs, Australia
| | - J Rodney Brister
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, USA
| | | | - B L Sarkar
- Emeritus ICMR-National Institute of Cholera and Enteric Diseases (NICED), Kolkata, India
| | - Tong Yigang
- Beijing University of Chemical Technology, Beijing, China
| | - Ying Liu
- Archaeal Virology Unit, Institut Pasteur, Paris, France
| | - Li Huang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Johannes Wittmann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Berlin, Germany
| | - Nina Chanishvili
- The Eliava Institute of Bacteriophage, MIcrobiology and Virology, Tbilisi, Georgia
| | | | - Janis Rumnieks
- Latvian Biomedical Research and Study Center, Riga, Latvia
| | - Tomohiro Mochizuki
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, Japan
| | | | - Ramy K Aziz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University and Microbiology and Immunology Research Program, Children's Cancer Hospital Egypt, Cairo, 57357, Egypt
| | - Małgorzata Łobocka
- Laboratory of Bacteriophage Biology, Institute of Biochemistry and Biophysics of the Polish Academy of Sciences, Warsaw, Poland
| | - Kenneth M Stedman
- Biology Department and Center for Life in Extreme Environments, Portland State University, Portland, USA
| | | | - Annika Gillis
- Laboratory of Food and Environmental Microbiology, Earth and Life Institute, UC Louvain, Louvain-la-Neuve, Belgium
| | - Xu Peng
- Microbial Immunity Group, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - François Enault
- Université Clermont Auvergne, CNRS, LMGE, 63000, Clermont-Ferrand, France
| | - Petar Knezevic
- Faculty of Sciences Department of Biology and Ecology, University of Novi Sad, Novi Sad, Serbia
| | | | - Sung-Keun Rhee
- Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheongju, South Korea
| | | | - Cristina Moraru
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Oldenburg, Germany
| | - Andrea I Moreno Switt
- Escuela de Medicina Veterinaria, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Minna M Poranen
- Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Andrew Millard
- Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
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22
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Shimakura H, Nasukawa T, Uchiyama J, Sugimoto R, Imanishi I, Oota S, Mizukami K, Fujimura M, Sakaguchi M. IgE reactivity to milk components in dogs with cutaneous adverse food reactions. J Vet Med Sci 2021; 83:1509-1512. [PMID: 34373420 PMCID: PMC8569881 DOI: 10.1292/jvms.21-0162] [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: 12/05/2022] Open
Abstract
We investigated the IgE reactivity to crude and purified milk antigens in the sera of 112
dogs with cutaneous adverse food reactions (CAFRs). Of the 112 dogs, 33 (29%) had specific
IgE for crude milk antigens. In the dogs with milk-specific IgE, IgE reactivity to casein,
bovine serum albumin (BSA), α-lactalbumin, β-lactoglobulin, and bovine IgG were 81%, 85%,
39%, 27%, and 35%, respectively. Casein and BSA may be important allergens in dogs with
CAFRs. Some canine vaccines contain casein hydrolysate as a stabilizer and the pooled
serum with anti-casein IgE showed IgE reactivity to the vaccines containing it.
Information about IgE reactivity to casein in dogs with CAFRs could be useful for
predicting adverse reactions to the vaccines including casein hydrolysate.
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Affiliation(s)
- Hidekatsu Shimakura
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
| | - Tadahiro Nasukawa
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
| | - Ryosuke Sugimoto
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
| | - Ichiro Imanishi
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
| | - Sumire Oota
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
| | - Keijiro Mizukami
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
| | | | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University
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23
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Murakami H, Murakami-Kawai M, Kamisuki S, Hisanobu S, Tsurukawa Y, Uchiyama J, Sakaguchi M, Tsukamoto K. Specific antiviral effect of violaceoid E on bovine leukemia virus. Virology 2021; 562:1-8. [PMID: 34242747 DOI: 10.1016/j.virol.2021.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 06/04/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 11/28/2022]
Abstract
Bovine leukemia virus (BLV) infection has spread worldwide causing significant economic losses in the livestock industry. In countries with a high prevalence of BLV, minimizing economic losses is challenging; thus, research into various countermeasures is important for improving BLV control. Because anti-BLV drugs have not been developed, the present study explored a promising chemical compound with anti-BLV activity. Initially, screening of a chemical compound library revealed that violaceoid E (vioE), which is isolated from fungus, showed antiviral activity. Further analysis demonstrated that the antiviral effect of vioE inhibited transcriptional activation of BLV. Cellular thermal shift assay and pulldown assays provided evidence for a direct interaction between vioE and the viral transactivator protein, Tax. These data indicate that interference with Tax-dependent transcription could be a novel target for development of anti-BLV drugs. Therefore, it is suggested that vioE is a novel antiviral compound against BLV.
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Affiliation(s)
- Hironobu Murakami
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan; Center for Human and Animal Symbiosis Science, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Makoto Murakami-Kawai
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shinji Kamisuki
- Center for Human and Animal Symbiosis Science, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan; Laboratory of Chemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shibasaki Hisanobu
- Laboratory of Chemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yukine Tsurukawa
- Laboratory of Chemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- Center for Human and Animal Symbiosis Science, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan; Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kenji Tsukamoto
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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24
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Yoshida M, Mizukami K, Hisasue M, Imanishi I, Kurata K, Ochiai M, Itoh M, Nasukawa T, Uchiyama J, Tsujimoto H, Sakaguchi M. Anaphylaxis after rabies vaccination for dogs in Japan. J Vet Med Sci 2021; 83:1202-1205. [PMID: 34108336 PMCID: PMC8437711 DOI: 10.1292/jvms.21-0090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Severe adverse reactions after rabies vaccination in dogs were examined from 317 cases
reported to the Ministry of Agriculture, Forestry and Fisheries (MAFF) in Japan during
15-year period from April 2004 to March 2019. We found that 109 of the 317 dogs showed
anaphylaxis (0.15/100,000 vaccinated dogs), and 71 of the 109 cases of anaphylaxis
resulted in death (0.10/100,000 vaccinated dogs). We measured bovine serum albumin (BSA)
in four commercially available rabies vaccines and found the levels ranged from 0.1 to
16.6 µg/dose. Our survey showed that the rate of anaphylaxis to rabies vaccines in dogs is
rare, although some cases of anaphylaxis resulted in death. Veterinarians should be well
prepared to deal with vaccine-associated anaphylaxis.
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Affiliation(s)
- Megumi Yoshida
- Laboratory of Veterinary Microbiology I, Azabu University, Sagamihara, Kanagawa 252-5201, Japan.,ITEA Inc., Institute of Tokyo Environmental Allergy, Bunkyo-ku, Tokyo 113-0034, Japan
| | - Keijiro Mizukami
- Laboratory of Veterinary Microbiology I, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Masaharu Hisasue
- Laboratory of Small Animal Internal Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Ichiro Imanishi
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Kanagawa 252-0329, Japan
| | - Keigo Kurata
- ITEA Inc., Institute of Tokyo Environmental Allergy, Bunkyo-ku, Tokyo 113-0034, Japan
| | - Masaki Ochiai
- Department of Quality Assurance Radiation Safety, and Information Management, National Institute of Infectious Diseases, Musashimurayama, Tokyo 208-0011, Japan
| | - Masato Itoh
- Laboratory of Veterinary Microbiology I, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Tadahiro Nasukawa
- Laboratory of Veterinary Microbiology I, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Hajime Tsujimoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, Azabu University, Sagamihara, Kanagawa 252-5201, Japan.,ITEA Inc., Institute of Tokyo Environmental Allergy, Bunkyo-ku, Tokyo 113-0034, Japan
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25
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Takeuchi I, Nasukawa T, Sugimoto R, Takemura-Uchiyama I, Murakami H, Uchiyama J. Analyses of propagation processes of Staphylococcus aureus bacteriophages S13' and S25-3 in two different taxonomies by definitive screening design. Virus Res 2021; 298:198406. [PMID: 33798676 DOI: 10.1016/j.virusres.2021.198406] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 10/21/2022]
Abstract
To introduce phage therapy against multidrug-resistant Staphylococcus aureus in Western medicine, the establishment of phage manufacturing, particularly phage propagation, is indispensable. For the propagation of S. aureus phages, knowledge of the effects of phage types, process parameters, and analytical methodologies should be investigated. In this study, S. aureus phage propagations were studied in a flask with a new class of design of experiments, definitive screening design, using S. aureus phages S13' and S25-3 in different taxonomies. Four process parameters, namely, multiplicity of infection, bacterial density at infection, time of harvest, and temperature, were evaluated with the regression models based on the phage concentration data measured using plaque assay and quantitative polymerase chain reaction. As a result, phage propagations measured using plaque assay and quantitative polymerase chain reaction were overall similar to each other in the case of phage S13', while they differed in the case of phage S25-3. These results suggest that the propagation processes need to be developed according to phage type, and the choice of methodologies for phage concentration measurements should be carefully considered.
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Affiliation(s)
- Ippei Takeuchi
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | | | - Ryosuke Sugimoto
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | | | | | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.
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26
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Shirai H, Yamaguchi H, Yudai K, Yoshida M, Ishihara J, Uchiyama J, Sakaguchi M. Seasonal changes of mite allergen (Der 1) levels in houses with different architectural styles and ventilation systems. J Allergy Clin Immunol 2021. [DOI: 10.1016/j.jaci.2020.12.577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Takeda S, Uchiyama J, Sugita K, Enomoto H, Ahhmed AM, Kinoshita Y, Mizunoya W, Arima Y, Sakata R. Functionality of liquid smoke as an antimicrobial in cooked meat products: liquid smoke suppresses spoilage-related lactic acid bacteria. FSTR 2021. [DOI: 10.3136/fstr.27.759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shiro Takeda
- Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University
| | - Jumpei Uchiyama
- Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University
| | - Kazutoshi Sugita
- Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University
| | | | - Abdulatef M Ahhmed
- Chemical and Metallurgical Engineering Faculty, Yildiz Technical University
| | - Yuki Kinoshita
- Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University
| | - Wataru Mizunoya
- Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University
| | | | - Ryoichi Sakata
- Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University
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28
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Nasukawa T, Sugimoto R, Uchiyama J, Takemura-Uchiyama I, Murakami H, Fukuda K, Matsuzaki S, Sakaguchi M. Purification of membrane vesicles from Gram-positive bacteria using flow cytometry, after iodixanol density-gradient ultracentrifugation. Res Microbiol 2020; 172:103792. [PMID: 33220407 DOI: 10.1016/j.resmic.2020.11.003] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 11/06/2020] [Accepted: 11/06/2020] [Indexed: 11/20/2022]
Abstract
Membrane vesicles (MVs) play biologically important roles in Gram-positive bacteria, and purification is essential for their study. Although high-performance flow cytometry has the capability to quantify and isolate specific small particles, it has not been examined for MV isolation. In this study, we used high-performance flow cytometry to analyze MV from Gram-positive bacteria, Staphylococcus aureus and Bacillus subtilis, prepared by iodixanol density-gradient ultracentrifugation. Analysis of the quality of MV samples before and after sorting showed that the flow cytometric sorting provided higher purity and uniformity compared to gradient isolation alone. The MV purification method using flow cytometry should prove useful for applications requiring a very high purity of MV samples such as proteomic, metagenomic or lipidomic studies.
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Affiliation(s)
| | - Ryosuke Sugimoto
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan.
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29
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Sakaguchi Y, Uchiyama J, Také A, Gotoh K, Sakaguchi M, Suzuki T, Yamamoto Y, Hosomi K, Kohda T, Mukamoto M, Kozaki S, Hayashi S, Oguma K. Analysis of a plasmid encoding botulinum neurotoxin type G gene in Clostridium argentinense. Anaerobe 2020; 66:102281. [PMID: 33059044 DOI: 10.1016/j.anaerobe.2020.102281] [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: 08/06/2020] [Revised: 09/17/2020] [Accepted: 10/01/2020] [Indexed: 11/25/2022]
Abstract
Clostridium argentinense produces botulinum neurotoxin type G (BoNT/G). We sequenced and analyzed the plasmid harboring the bont/G gene, designated pCAG, in C. argentinense strain 2740. The pCAG consisted of 140,070 bp containing the bont/G gene cluster. Although this gene cluster showed high similarities in its DNA sequence and ORF arrangement to those of other bont gene clusters, the other regions of the plasmid did not. A phylogenetic study suggested that pCAG had a unique evolutionary history compared with other clostridial bont-harboring plasmids. This suggests that pCAG is possibly a novel type of plasmid expressing the bont/G gene in C. argentinense.
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Affiliation(s)
- Yoshihiko Sakaguchi
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan.
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Akira Také
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Kazuyoshi Gotoh
- Department of Bacteriology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Tomonori Suzuki
- Department of Molecular Microbiology, Faculty of Life Science, Tokyo University of Agriculture, Tokyo, Japan
| | - Yumiko Yamamoto
- Department of Bacteriology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Koji Hosomi
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health, and Nutrition, Ibaraki, Osaka, Japan
| | - Tomoko Kohda
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - Masafumi Mukamoto
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - Shunji Kozaki
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - Shunji Hayashi
- Department of Microbiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Keiji Oguma
- Department of Bacteriology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
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30
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Murakami H, Yajima Y, Sato F, Kamisuki S, Taharaguchi S, Onda K, Roh S, Uchiyama J, Sakaguchi M, Tsukamoto K. Development of multipurpose recombinant reporter bovine leukemia virus. Virology 2020; 548:226-235. [PMID: 32771769 DOI: 10.1016/j.virol.2020.07.011] [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: 05/06/2020] [Revised: 07/10/2020] [Accepted: 07/15/2020] [Indexed: 12/25/2022]
Abstract
Bovine leukemia virus (BLV) is a global problem that results in significant economic losses to the livestock industry. We developed three virus strains by inserting the HiBiT reporter tag from NanoLuc luciferase (NLuc) into limited sites within BLV molecular clones. Initial analysis for site selection of the tag insertion revealed a permissible site immediately downstream of the viral envelope gene. Therefore, NLuc activity could be used to measure virus copy numbers in the supernatant and the levels of cell infection. Productivity and growth kinetics of the reporter virus were similar to those of the wild-type strain; therefore, the reporter virus can be used to characterize the replication of chimeric viruses as well as responses to the antiviral drug, amprenavir. Collectively, our results suggest that the BLV reporter virus with a HiBiT tag insertion is a highly versatile system for various purposes such as evaluating virus replication and antiviral drugs.
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Affiliation(s)
- Hironobu Murakami
- Laboratory of Animal Health Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Yusuke Yajima
- Laboratory of Animal Health Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Fumiaki Sato
- Laboratory of Animal Health Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shinji Kamisuki
- Laboratory of Chemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Satoshi Taharaguchi
- Laboratory of Veterinary Microbiology Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Ken Onda
- Laboratory of Farm Animal Internal Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Sanggun Roh
- Laboratory of Animal Physiology, Graduate School of Agriculture Science, Tohoku University, 1-1, Amamiya-machi, Tsutsumidori, Aoba-ku, Sendai, Miyagi, 981-8555, Japan
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology Ⅰ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology Ⅰ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kenji Tsukamoto
- Laboratory of Animal Health Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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31
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Mizukami K, Uchiyama J, Igarashi H, Murakami H, Osumi T, Shima A, Ishiahra G, Nasukawa T, Une Y, Sakaguchi M. Age-related analysis of the gut microbiome in a purebred dog colony. FEMS Microbiol Lett 2020; 366:5484838. [PMID: 31049554 DOI: 10.1093/femsle/fnz095] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 01/31/2019] [Accepted: 05/01/2019] [Indexed: 12/17/2022] Open
Abstract
Dogs are model animals that can be used to study the gut microbiome. Although the gut microbiome is assumed to be closely related to aging, information pertaining to this relationship in dogs is limited. Here, we examined the association between the canine gut microbiome and age via a bacterial 16S rRNA gene amplicon sequence analysis in a colony of 43 Japanese purebred Shiba Inu dogs. We found that microbial diversity tended to decrease with aging. A differential abundance analysis showed an association of a single specific microbe with aging. The age-related coabundance network analysis showed that two microbial network modules were positively and negatively associated with aging, respectively. These results suggest that the dog gut microbiome is likely to vary with aging.
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Affiliation(s)
- Keijiro Mizukami
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Hirotaka Igarashi
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Takafumi Osumi
- Animal Medical Center, Tokyo University of Agriculture and Technology, Saiwai-cho 3-5-8, Fuchu, Tokyo 183-8509, Japan
| | - Ayaka Shima
- Anicom Specialty Medical Institute Inc., Nishi-shinjuku 8-17-1, Shinjuku, Tokyo 160-0023, Japan
| | - Genki Ishiahra
- Anicom Specialty Medical Institute Inc., Nishi-shinjuku 8-17-1, Shinjuku, Tokyo 160-0023, Japan
| | - Tadahiro Nasukawa
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
| | - Yumi Une
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan.,Faculty of Veterinary Medicine, Okayama University of Science, Ikoinooka 1-3, Imabari, Ehime 794-8555, Japan
| | - Masahiro Sakaguchi
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
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32
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Ishimaru H, Okamoto N, Fujimura M, Miyaji K, Shimakura H, Takase Y, Mizukami K, Uchiyama J, DeBoer DJ, Sakaguchi M. IgE sensitivity to Malassezia pachydermatis and mite allergens in dogs with atopic dermatitis. Vet Immunol Immunopathol 2020; 226:110070. [PMID: 32492589 DOI: 10.1016/j.vetimm.2020.110070] [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: 05/30/2019] [Revised: 02/06/2020] [Accepted: 05/17/2020] [Indexed: 10/24/2022]
Abstract
In this study, dogs with atopic dermatitis were separated into non-food-induced atopic dermatitis (NFIAD) group (n = 15) and food-induced atopic dermatitis (FIAD) group (n = 37) based on an elimination diet test. IgE reactivity for crude Malassezia pachydermatis (M. pachydermatis) and house dust mites (HDM) allergen extracts was investigated in the two groups using fluorometric enzyme-linked immunosorbent assay (ELISA) and intradermal skin test (IDST). Nine (60%) of the 15 dogs in NFIAD group and 6 (16%) of the 37 dogs in FIAD group showed specific IgE for M. pachydermatis (Mann-Whitney U-test, P < 0.01). By immunoblotting analysis, the pooled serum samples from dogs with IgE for M. pachydermatis showed IgE reactivity for 50 kDa protein of M. pachydermatis. Twelve (80%) of the 15 dogs in NFIAD group and 8 (22%) of the 37 dogs in FIAD group showed specific IgE for HDM (Mann-Whitney U-test, P < 0.01). In addition, the dogs in NFIAD group significantly show a positive IDST to M. pachydermatis and HDM extracts compared with the dogs in FIAD group. The results suggest that dogs with NFIAD are at increased risk of becoming sensitized to the normal commensal organism M. pachydermatis compared with dogs with FIAD, perhaps co-sensitization occurred due to an HDM protease antigen's, Der f 1 and/or Der p 1, proteolytic activity related epidermal skin barrier defects. Treatment to limit skin colonization may thus be especially important in NFIAD.
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Affiliation(s)
- Hironobu Ishimaru
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Noriaki Okamoto
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Masato Fujimura
- Fujimura Animal Hospital, 5-10-26, Aomatanihigashi, Minou, Osaka, 562-0022, Japan
| | - Kazuki Miyaji
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Hidekatsu Shimakura
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yukari Takase
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Keijiro Mizukami
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Douglas J DeBoer
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA
| | - Masahiro Sakaguchi
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
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Uchiyama J, Murakami H, Sato R, Mizukami K, Suzuki T, Shima A, Ishihara G, Sogawa K, Sakaguchi M. Examination of the fecal microbiota in dairy cows infected with bovine leukemia virus. Vet Microbiol 2019; 240:108547. [PMID: 31902503 DOI: 10.1016/j.vetmic.2019.108547] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [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: 09/18/2019] [Revised: 12/03/2019] [Accepted: 12/03/2019] [Indexed: 12/30/2022]
Abstract
Infection of cattle by bovine leukemia virus (BLV) causes significant economic losses in terms of milk and meat production in many countries. Because the gut microbiota may be altered by immunomodulation resulting from viral infections, we hypothesized that latent BLV infection would change the gut (i.e., rumen and hindgut) microbiota of infected cattle. In this study, we compared the gut microbiota of 22 uninfected and 29 BLV-infected Holstein-Friesian cows kept on the same farm, by 16S rRNA amplicon sequence analysis of fecal samples. First, we found that the fecal microbial diversity of BLV-infected cows differed slightly from that of uninfected cows. According to differential abundance analysis, some bacterial taxa associated with ruminal fermentation, such as Lachnospiraceae and Veillonellaceae families, were enriched in the fecal microbiota of uninfected cows. Second, the virus propagation ability of BLV strains was examined in vitro, and the correlation of the fecal microbiota with this virus propagation ability was analyzed. Higher virus propagation was shown to lead to less diversity in the microbiota. Differential abundance analysis showed that one bacterial taxon of genus Sanguibacteroides was negatively correlated with the virus propagation ability of BLV strains. Considering these results, BLV infection was speculated to decrease energy production efficiency in the cows via modification of rumen and hindgut microbiota, which partly relies on the virus propagation ability of BLV strains. This may explain the secondary negative effects of BLV infections such as increased susceptibility to other infections and decreased lifetime milk production and reproductive efficiency.
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Affiliation(s)
- Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku Sagamihara-shi, Kanagawa, Japan.
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku Sagamihara-shi, Kanagawa, Japan
| | - Reiichiro Sato
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku Sagamihara-shi, Kanagawa, Japan
| | - Keijiro Mizukami
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku Sagamihara-shi, Kanagawa, Japan
| | - Takehito Suzuki
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku Sagamihara-shi, Kanagawa, Japan
| | - Ayaka Shima
- Anicom Insurance, Inc., 8-17-1 Nishishinjuku, Shinjuku-ku, Tokyo, 171-0033, Japan
| | - Genki Ishihara
- Anicom Insurance, Inc., 8-17-1 Nishishinjuku, Shinjuku-ku, Tokyo, 171-0033, Japan
| | - Kazuyuki Sogawa
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku Sagamihara-shi, Kanagawa, Japan
| | - Masahiro Sakaguchi
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-17-71, Chuo-ku Sagamihara-shi, Kanagawa, Japan
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Imai M, Mine K, Tomonari H, Uchiyama J, Matuzaki S, Niko Y, Hadano S, Watanabe S. Dark-Field Microscopic Detection of Bacteria using Bacteriophage-Immobilized SiO 2@AuNP Core-Shell Nanoparticles. Anal Chem 2019; 91:12352-12357. [PMID: 31464422 DOI: 10.1021/acs.analchem.9b02715] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
To replace molecular biological and immunological methods, biosensors have recently been developed for the rapid and sensitive detection of bacteria. Among a wide variety of biological materials, bacteriophages have received increasing attention as promising alternatives to antibodies in biosensor applications. Thus, we herein present a rapid and highly selective detection method for pathogenic bacteria, which combines dark-field light scattering imaging with a plasmonic biosensor system. The plasmonic biosensor system employs bacteriophages as the biorecognition element and the aggregation-induced light scattering signal of gold nanoparticle-assembled silica nanospheres as a signal transducer. Using Staphylococcus aureus strain SA27 as a model analyte, we demonstrated that the plasmonic biosensor system detects S. aureus in the presence of excess Escherichia coli in a highly selective manner. After the sample and the S. aureus phage S13'-conjugated plasmon scattering probe were mixed, S. aureus detection was completed within 15-20 min with a detection limit of 8 × 104 colony forming units per milliliter.
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Affiliation(s)
| | | | | | - Jumpei Uchiyama
- School of Veterinary Medicine , Azabu University , 1-17-71 Fuchinobe , Sagamihara-shi 229-8501 , Kanagawa , Japan
| | - Shigenobu Matuzaki
- Department of Microbiology and Infection, Kochi Medical School , Kochi University , Kohasu, Okoh-cho , Nankoku-shi 780-8505 , Kochi , Japan
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Imanishi I, Uchiyama J, Tsukui T, Hisatsune J, Ide K, Matsuzaki S, Sugai M, Nishifuji K. Therapeutic Potential of an Endolysin Derived from Kayvirus S25-3 for Staphylococcal Impetigo. Viruses 2019; 11:v11090769. [PMID: 31443379 PMCID: PMC6784202 DOI: 10.3390/v11090769] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 07/22/2019] [Revised: 08/16/2019] [Accepted: 08/20/2019] [Indexed: 12/31/2022] Open
Abstract
Impetigo is a contagious skin infection predominantly caused by Staphylococcus aureus. Decontamination of S. aureus from the skin is becoming more difficult because of the emergence of antibiotic-resistant strains. Bacteriophage endolysins are less likely to invoke resistance and can eliminate the target bacteria without disturbance of the normal microflora. In this study, we investigated the therapeutic potential of a recombinant endolysin derived from kayvirus S25-3 against staphylococcal impetigo in an experimental setting. First, the recombinant S25-3 endolysin required an incubation period of over 15 minutes to exhibit efficient bactericidal effects against S. aureus. Second, topical application of the recombinant S25-3 endolysin decreased the number of intraepidermal staphylococci and the size of pustules in an experimental mouse model of impetigo. Third, treatment with the recombinant S25-3 endolysin increased the diversity of the skin microbiota in the same mice. Finally, we revealed the genus-specific bacteriolytic effect of recombinant S25-3 endolysin against staphylococci, particularly S. aureus, among human skin commensal bacteria. Therefore, topical treatment with recombinant S25-3 endolysin can be a promising disease management procedure for staphylococcal impetigo by efficient bacteriolysis of S. aureus while improving the cutaneous bacterial microflora.
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Affiliation(s)
- Ichiro Imanishi
- Laboratory of Veterinary Internal Medicine, Division of Animal Life Science, Institute of Agriculture, Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - Toshihiro Tsukui
- Nippon Zenyaku Kogyo Co. Ltd., 1-1 Tairanoue, Sasagawa, Asaka-machi, Koriyama, Fukushima 963-0196, Japan
| | - Junzo Hisatsune
- Department of Bacteriology, Graduate school of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Kaori Ide
- Laboratory of Veterinary Internal Medicine, Division of Animal Life Science, Institute of Agriculture, Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - Shigenobu Matsuzaki
- Department of Ophthalmology and Visual Science, Kochi Medical School, Kochi University, 185-1 Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan
| | - Motoyuki Sugai
- Department of Bacteriology, Graduate school of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Koji Nishifuji
- Laboratory of Veterinary Internal Medicine, Division of Animal Life Science, Institute of Agriculture, Graduate School, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan.
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36
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Murakami H, Todaka H, Uchiyama J, Sato R, Sogawa K, Sakaguchi M, Tsukamoto K. A point mutation to the long terminal repeat of bovine leukemia virus related to viral productivity and transmissibility. Virology 2019; 537:45-52. [PMID: 31445323 DOI: 10.1016/j.virol.2019.08.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/15/2019] [Accepted: 08/16/2019] [Indexed: 12/21/2022]
Abstract
It is important to establish the molecular basis of the high transmissibility of bovine leukemia virus (BLV) to develop new methods of preventing viral transmission. Hence, the aim of this study was to determine whether some strains had transmission advantages. First, we determined the whole BLV genome sequences of all 34 BLV-infected cows from one farm. Phylogenetic analysis divided strains into 26 major and 8 minor strains. The major strains dominantly spread independent of host factor, bovine leucocyte antigen. Further analysis, with molecular clones, associated transmissibility with viral productivity in vitro. In addition, the two groups could be classified by group-specific mutations. The reverse genetic approach demonstrated that a spontaneous mutation at nucleotide 175 of the BLV genome, which is located in the viral promoter region, could alter viral productivity by changing viral transactivation, suggesting that BLV transmissibility is affected by a spontaneous mutation associated with viral productivity.
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Affiliation(s)
- Hironobu Murakami
- Laboratory of Animal Health Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Haruna Todaka
- Laboratory of Animal Health Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology Ⅰ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Reiichiro Sato
- Laboratory of Clinical Veterinary Medicine for Large Animal, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kazuyuki Sogawa
- Laboratory of Biochemistry, School of Life and Environmental Science, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology Ⅰ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kenji Tsukamoto
- Laboratory of Animal Health Ⅱ, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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37
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Kanno K, Tsurukawa Y, Kamisuki S, Shibasaki H, Iguchi K, Murakami H, Uchiyama J, Kuramochi K. Novel neuroprotective hydroquinones with a vinyl alkyne from the fungus, Pestalotiopsis microspora. J Antibiot (Tokyo) 2019; 72:793-799. [PMID: 31341274 DOI: 10.1038/s41429-019-0213-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/03/2019] [Accepted: 06/15/2019] [Indexed: 12/15/2022]
Abstract
New hydroquinone derivatives bearing a vinyl alkyne, pestalotioquinols A and B, were isolated from a fungal culture broth of Pestalotiopsis microspora. The structures of these novel compounds were determined by interpretation of spectroscopic data (1D/2D NMR, MS, and IR), and the absolute configuration of the stereogenic center of pestalotioquinol A was assigned using the modified Mosher's method. Nerve growth factor-differentiated neuronal PC12 cells were pretreated with pestalotioquinols A and B and removed from the medium, and then treated with a generator of peroxynitrite (ONOO-), a reactive nitrogen species, to induce cell death. The cytotoxicity of the treated cells was assessed by measuring lactate dehydrogenase leakage. As a result, 1-3 μM pretreatment of pestalotioquinols A and B rescued neuronal PC12 cells from peroxynitrite-induced cytotoxicity and the protective activity was sustained after removing each compound from the medium. These results demonstrate that pestalotioquinol derivatives are a new class of hydroquinones possessing a vinyl alkyne and exhibiting relatively high neuroprotective effects.
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Affiliation(s)
- Kazuki Kanno
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yukine Tsurukawa
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Shinji Kamisuki
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Hisanobu Shibasaki
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Keita Iguchi
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Hironobu Murakami
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Fuchinobe, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kouji Kuramochi
- Department of Applied Biological Science, Tokyo University of Science, Yamazaki, Noda, Chiba, 278-8510, Japan
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38
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Imanishi I, Uchiyama J, Matsuda T, Mizukami K, Shimakura H, Nasukawa T, Kamiie J, Kurata K, Fujimura M, Shimakura K, Nishifuji K, Sakaguchi M. IgE reactivity to Pacific cod (Gadus macrocephalus) fish allergens in dogs with canine atopic dermatitis. J Allergy Clin Immunol 2019. [DOI: 10.1016/j.jaci.2018.12.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Uchiyama J, Mizukami K, Yahara K, Kato SI, Murakami H, Nasukawa T, Ohara N, Ogawa M, Yamazaki T, Matsuzaki S, Sakaguchi M. Genome Sequences of 12 Mycobacteriophages Recovered from Archival Stocks in Japan. Genome Announc 2018; 6:e00472-18. [PMID: 29930032 PMCID: PMC6013612 DOI: 10.1128/genomea.00472-18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 05/21/2018] [Indexed: 11/20/2022]
Abstract
Using Mycobacterium smegmatis mc2155, 12 siphoviruses were recovered from long-term archival stocks stored in Japan. Their genome sequences were 46.0 to 61.3 kbp with 63 to 68% G+C contents, which allowed them to be categorized within cluster W and subclusters A1, A2, B3, A7, I1, and K4.
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Affiliation(s)
- Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Keijiro Mizukami
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Koji Yahara
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | | | - Naoya Ohara
- Department of Oral Microbiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
- The Advanced Research Center for Oral and Craniofacial Sciences, Dental School, Okayama University, Okayama, Japan
| | - Midori Ogawa
- Department of Microbiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu City, Japan
| | - Toshio Yamazaki
- Division of Biosafety Control and Research, National Institute of Infectious Diseases, Tokyo, Japan
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40
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Murakami H, Uchiyama J, Suzuki C, Nikaido S, Shibuya K, Sato R, Maeda Y, Tomioka M, Takeshima SN, Kato H, Sakaguchi M, Sentsui H, Aida Y, Tsukamoto K. Variations in the viral genome and biological properties of bovine leukemia virus wild-type strains. Virus Res 2018; 253:103-111. [PMID: 29913249 DOI: 10.1016/j.virusres.2018.06.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 05/06/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 01/23/2023]
Abstract
Bovine leukemia virus (BLV) is the etiological agent of enzootic bovine leukosis (EBL), which causes enormous economic losses in the livestock industry worldwide. To reduce the economic loss caused by BLV infection, it is important to clarify the characters associated with BLV transmissibility and pathogenesis in cattle. In this study, we focused on viral characters and examined spontaneous mutations in the virus and viral properties by analyses of whole genome sequences and BLV molecular clones derived from cows with and without EBL. Genomic analysis indicated that all 28 strains harbored limited genetic variations but no deletion mutations that allowed classification into three groups (A, B, and C), except for one strain. Some nucleotide/amino acid substitutions were specific to a particular group. On the other hand, these genetic variations were not associated with the host bovine leukocyte antigen-DRB3 allele, which is known to be related to BLV pathogenesis. The viral replication activity in vitro was high, moderate, and low in groups A, B, and C, respectively. In addition, the proviral load, which is related to BLV transmissibility and pathogenesis, was high in cows infected with group A strains and low in those infected with group B/C strains. Therefore, these results suggest that limited genetic variations could affect viral properties relating to BLV transmissibility and pathogenesis.
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Affiliation(s)
- Hironobu Murakami
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Chihiro Suzuki
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Sae Nikaido
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kaho Shibuya
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Reiichiro Sato
- Laboratory of Farm Animal Internal Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yosuke Maeda
- Laboratory of Clinical Veterinary Medicine for Large Animal, School of Veterinary Medicine, Kitasato University, Higashi 23bancho 35-1, Towada, Aomori, 034-8628, Japan
| | - Michiko Tomioka
- Laboratory of Clinical Veterinary Medicine for Large Animal, School of Veterinary Medicine, Kitasato University, Higashi 23bancho 35-1, Towada, Aomori, 034-8628, Japan
| | - Shin-Nosuke Takeshima
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Food and Nutrition Faculty of Human Life, Jumonji University, 2-1-28, Sugasawa, Niiza, Saitama, 352-8510, Japan
| | - Hajime Kato
- Southern Nemuro Operation Center, Hokkaido Higashi Agricultural Mutual Aid Association, 119, Betsukai-Midorimachi, Betsukai, Notsuke-gun, Hokkaido 086-0292, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Hiroshi Sentsui
- Laboratory of Veterinary Epizootiology, School of Veterinary Medicine, Nihon University, Kameino 1866, Fujisawa, Kanagawa 252-0880, Japan
| | - Yoko Aida
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kenji Tsukamoto
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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41
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Takeuchi H, Kira M, Konishi S, Uchiyama J, Matsuzaki S, Matsumura Y. Polymorphisms in the Helicobacter pylori NY43 strain and its prophage-cured derivatives. Microbiology (Reading) 2018; 164:877-882. [PMID: 29738305 DOI: 10.1099/mic.0.000665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This study aimed to determine the characteristics of the Helicobacter pylori host NY43 strain and its prophage-cured derivative. H. pylori colonizing the human stomach cause many diseases. They show high genetic diversity, allowing the development of mutant strains that can form bacterial communities adapted to specific environmental conditions. Bacteriophage activities are associated with bacterial evolution, including pathogenicity development. Herein, we reported the complete genome sequence and genomic organization of two H. pylori prophages, KHP30 and KHP40; the effects of KHP30 on the behaviours of NY43 are not yet known. We showed that approximately 57 % prophage-cured derivatives spontaneously appeared in the exponential phase during liquid culture, and the biological characteristics of these derivatives differed from those of the host NY43. KHP30 reinfected the cured derivatives, and the curing ratio was influenced by culture conditions. KHP30 was shown to promote the development of a flexible H. pylori community with variable characteristics.
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Affiliation(s)
- Hiroaki Takeuchi
- Department of Clinical Laboratory Medicine, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
| | - Mizuki Kira
- Department of Clinical Laboratory Medicine, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
| | - Sayuri Konishi
- Department of Clinical Laboratory Medicine, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Shigenobu Matsuzaki
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
| | - Yoshihisa Matsumura
- Department of Clinical Laboratory Medicine, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
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42
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Ito M, Aoki S, Uchiyama J, Yamato K. Development of a New Punch Head Shape to Replicate Scale-Up Issues on a Laboratory Tablet Press III: Replicating Sticking Phenomenon Using the SAS Punch and Evaluation by Checking the Tablet Surface Using 3-D Laser Scanning Microscope. J Pharm Sci 2018; 107:2144-2151. [PMID: 29684408 DOI: 10.1016/j.xphs.2018.04.012] [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: 01/07/2018] [Revised: 03/31/2018] [Accepted: 04/06/2018] [Indexed: 10/17/2022]
Abstract
Sticking is a common observation in the scale-up stage on the punch tip using a commercial tableting machine. The difference in the total compression time between a laboratory tableting machine and a commercial one is considered one of the main root causes of scale-up issues in the tableting processes. The proposed "Size Adjusted for Scale-up punch" can be used to adjust the consolidation and dwell times for commercial tableting machine. As a result, the sticking phenomenon is able to be replicated at the pilot scale stage. As reported in this article, the quantification of sticking was done using a 3-D laser scanning microscope to check the tablet surface. It was shown that the sticking area decreased with the addition of magnesium stearate in the formulation, but the sticking depth was not affected by the additional amount of magnesium stearate. It is proposed that the use of a 3-D laser scanning microscope can be applied to evaluate sticking as a process analytical technology tool, and so sticking can be monitored continuously without stopping the machine.
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Affiliation(s)
- Manabu Ito
- Formulation Research, PST Unit, Medicine Development Center, Eisai Co., Ltd. Kakamigahara-Shi, Gifu 501-6195, Japan.
| | - Shigeru Aoki
- Formulation Technology, DI Plus Unit, EDCS, Eisai Co., Ltd., Kakamigahara-Shi, Gifu 501-6195, Japan
| | - Jumpei Uchiyama
- Formulation Technology, DI Plus Unit, EDCS, Eisai Co., Ltd., Kakamigahara-Shi, Gifu 501-6195, Japan
| | - Keisuke Yamato
- Formulation Technology, DI Plus Unit, EDCS, Eisai Co., Ltd., Kakamigahara-Shi, Gifu 501-6195, Japan
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43
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Adriaenssens EM, Wittmann J, Kuhn JH, Turner D, Sullivan MB, Dutilh BE, Jang HB, van Zyl LJ, Klumpp J, Lobocka M, Moreno Switt AI, Rumnieks J, Edwards RA, Uchiyama J, Alfenas-Zerbini P, Petty NK, Kropinski AM, Barylski J, Gillis A, Clokie MRC, Prangishvili D, Lavigne R, Aziz RK, Duffy S, Krupovic M, Poranen MM, Knezevic P, Enault F, Tong Y, Oksanen HM, Rodney Brister J. Taxonomy of prokaryotic viruses: 2017 update from the ICTV Bacterial and Archaeal Viruses Subcommittee. Arch Virol 2018; 163:1125-1129. [PMID: 29356990 DOI: 10.1007/s00705-018-3723-z] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 01/15/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Evelien M Adriaenssens
- Institute of Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, United Kingdom
| | - Johannes Wittmann
- Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, 38124, Braunschweig, Germany
| | - Jens H Kuhn
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Fort Detrick, Frederick, MD, 21702, USA
| | - Dann Turner
- Faculty of Health and Applied Sciences, UWE Bristol, Frenchay Campus, Bristol, BS16 1QY, United Kingdom
| | - Matthew B Sullivan
- Department of Microbiology, The Ohio State University, Columbus, OH, 43210, USA
| | - Bas E Dutilh
- Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, The Netherlands.,Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Ho Bin Jang
- Department of Microbiology, The Ohio State University, Columbus, OH, 43210, USA
| | - Leonardo J van Zyl
- Department of Biotechnology, Institute for Microbial Biotechnology and Metagenomics (IMBM), University of the Western Cape, Bellville, Cape Town, 7535, South Africa
| | - Jochen Klumpp
- Institute of Food, Nutrition and Health, ETH Zurich, 8092, Zurich, Switzerland
| | - Malgorzata Lobocka
- Department of Microbial Biochemistry, Institute of Biochemistry and Biophysics of the Polish Academy of Sciences, 02-106, Warsaw, Poland
| | - Andrea I Moreno Switt
- Faculty of Ecology and Natural Resources School, Universidad Andres Bello, 8370146, Santiago, Chile
| | - Janis Rumnieks
- Latvian Biomedical Research and Study Center, Riga, LV-1067, Latvia
| | - Robert A Edwards
- Departments of Computer Science and Biology, San Diego State University, San Diego, CA, 92182, USA
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Fuchinobe 1-7-71, Chuo-ku Sagamihara-shi, Kanagawa, 252-0206, Japan
| | - Poliane Alfenas-Zerbini
- Laboratory of Industrial Microbiology,Instituto de Biotecnologia Aplicada à Agropecuária, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Nicola K Petty
- The ithree institute, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Andrew M Kropinski
- Departments of Food Science, and Pathobiology, University of Guelph, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada.
| | - Jakub Barylski
- Department of Molecular Virology, Institute of Experimental Biology, Adam Mickiewicz University, Poznan, Poland
| | - Annika Gillis
- Laboratory of Food and Environmental Microbiology, Université Catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Martha R C Clokie
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, LE1 9HN, United Kingdom
| | - David Prangishvili
- Unit of Molecular Biology of the Gene in Extremophiles, Department of Microbiology, Institut Pasteur, 75015, Paris, France
| | - Rob Lavigne
- Laboratory of Gene Technology, KU Leuven, 3001, Leuven, Belgium
| | - Ramy Karam Aziz
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Qasr El-Ainy St, 11562, Cairo, Egypt
| | - Siobain Duffy
- Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ, 08901, USA
| | - Mart Krupovic
- Unit of Molecular Biology of the Gene in Extremophiles, Department of Microbiology, Institut Pasteur, 75015, Paris, France
| | - Minna M Poranen
- Department of Biosciences, University of Helsinki, Helsinki, Finland
| | - Petar Knezevic
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Francois Enault
- Université Clermont Auvergne, CNRS, LMGE, 63000, Clermont-Ferrand, France
| | - Yigang Tong
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China
| | - Hanna M Oksanen
- Department of Biosciences, University of Helsinki, Helsinki, Finland
| | - J Rodney Brister
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD, 20894, USA
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44
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Miyazaki N, Uchiyama J, Matsuzaki S, Murata K, Iwasaki K. 2S-B1-4Structural Analysis of Staphylococcus Phages by Cryo-electron Microscopy, Aimed for the Application of Phage Therapy. Microscopy (Oxf) 2017. [DOI: 10.1093/jmicro/dfx057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Naoyuki Miyazaki
- Institute for Protein Research, Osaka University, Osaka, Japan,
- National Institute for Physiological Sciences, Okazaki, Japan,
| | - Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan, and
| | | | | | - Kenji Iwasaki
- Institute for Protein Research, Osaka University, Osaka, Japan,
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45
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Uchiyama J, Taniguchi M, Kurokawa K, Takemura-Uchiyama I, Ujihara T, Shimakura H, Sakaguchi Y, Murakami H, Sakaguchi M, Matsuzaki S. Adsorption of Staphylococcus viruses S13′ and S24-1 on Staphylococcus aureus strains with different glycosidic linkage patterns of wall teichoic acids. J Gen Virol 2017; 98:2171-2180. [DOI: 10.1099/jgv.0.000865] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Jumpei Uchiyama
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Maya Taniguchi
- School of Veterinary Medicine, Azabu University, Kanagawa, Japan
| | - Kenji Kurokawa
- Faculty of Pharmaceutical Sciences, Nagasaki International University, Nagasaki, Japan
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46
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Murakami H, Asano S, Uchiyama J, Sato R, Sakaguchi M, Tsukamoto K. Bovine leukemia virus G4 enhances virus production. Virus Res 2017; 238:213-217. [PMID: 28690069 DOI: 10.1016/j.virusres.2017.07.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 04/14/2017] [Revised: 06/19/2017] [Accepted: 07/04/2017] [Indexed: 01/06/2023]
Abstract
The nonstructural G4 gene of bovine leukemia virus (BLV) has been thought to function in virus replication. However, the discovery of the AS1 gene on the antisense strand of the G4 gene has affected this interpretation. In this study, we investigated the function of G4 in virus production independent of the AS1 gene using a reverse genetic approach, and briefly examined the association of the G4 protein with Tax, which is also a nonstructural protein that promotes virus replication. First, we constructed a mutant molecular clone of BLV with a nonsense mutation in G4 that had a minimal effect on the AS1 gene. Comparison of the wild-type and mutant molecular clones indicated that the nonsense mutation resulted in a reduction of virus in the culture supernatant and accumulation of viral RNA (vRNA) in cells. Moreover, G4 and Tax expression in cells was shown to synergistically enhance virus production. Therefore, we suggest that G4 enhances virus production through abrogation of vRNA accumulation.
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Affiliation(s)
- Hironobu Murakami
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Shotaro Asano
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Reiichiro Sato
- Laboratory of Farm Animal Internal Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kenji Tsukamoto
- Laboratory of Animal Health II, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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Shigehisa R, Uchiyama J, Kato SI, Takemura-Uchiyama I, Yamaguchi K, Miyata R, Ujihara T, Sakaguchi Y, Okamoto N, Shimakura H, Daibata M, Sakaguchi M, Matsuzaki S. Characterization of Pseudomonas aeruginosa phage KPP21 belonging to family Podoviridae genus N4-like viruses isolated in Japan. Microbiol Immunol 2016; 60:64-7. [PMID: 26616567 DOI: 10.1111/1348-0421.12347] [Citation(s) in RCA: 8] [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: 07/13/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 11/30/2022]
Abstract
Bacteriophages (phages) belonging to the family Podoviridae genus N4-like viruses have been used as therapeutic agent in phage therapy against Pseudomonas aeruginosa infections. P. aeruginosa phage KPP21 was isolated in Japan, and phylogenetically investigated the phages belonging to this viral genus. Morphological and genetic analyses confirmed that phage KPP21 belongs to the family Podoviridae genus N4-like viruses. Moreover, phylogenetic analyses based on putative DNA polymerase and major virion protein showed that P. aeruginosa phages belonging to the genus N4-like viruses are separated into two lineages and that phage KPP21 is in the same clade as phage LUZ7.
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Affiliation(s)
- Ryu Shigehisa
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi
| | - Jumpei Uchiyama
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa
| | | | - Iyo Takemura-Uchiyama
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa
| | - Kotoe Yamaguchi
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi
| | - Reina Miyata
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi
| | | | - Yoshihiko Sakaguchi
- Department of Microbiology, Kitasato University School of Medicine, Kanagawa, Japan
| | - Noriaki Okamoto
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa
| | - Hidekatsu Shimakura
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa
| | - Masanori Daibata
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi
| | - Masahiro Sakaguchi
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa
| | - Shigenobu Matsuzaki
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi
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Uchiyama J, Takemura-Uchiyama I, Kato SI, Takeuchi H, Sakaguchi Y, Ujihara T, Daibata M, Shimakura H, Okamoto N, Sakaguchi M, Matsuzaki S. Screening of KHP30-like prophages among Japanese Helicobacter pylori strains, and genetic analysis of a defective KHP30-like prophage sequence integrated in the genome of the H. pylori strain NY40. FEMS Microbiol Lett 2016; 363:fnw157. [PMID: 27388014 DOI: 10.1093/femsle/fnw157] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2016] [Indexed: 12/11/2022] Open
Abstract
We have recently reported the active Helicobacter pylori bacteriophages (phages), KHP30 and KHP40, the genomic DNAs of which exist as episomes in host bacterial strains isolated in Japan (i.e. pseudolysogeny). In this study, we examined the possibility of the lysogeny of active KHP30-like phages in Japanese H. pylori strains, because their genomes contain a putative integrase gene. Only the NY40 strain yielded partial detection of a KHP30-like prophage sequence in PCR among 174 Japanese H. pylori isolates, except for strains producing the above active phages. Next, according to the genomic analysis of the NY40 strain, the KHP30-like prophage sequence was found to be located from ca. 524 to 549 kb in the host chromosome. The attachment sites, attL and attR, in the NY40 genome showed almost the same genomic location and sequence as those detected in a French isolate B38, suggesting that an active parental KHP30-like phage had integrated into the ancestral NY40 genome in a site-specific manner. The prophage found in the NY40 genome was assumed to have been genetically modified, after site-specific integration. These, together with the data in the KHP30-like prophages of other H. pylori genomes, suggest that the lysogenic state of the KHP30-like phages is generally unstable.
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Affiliation(s)
- Jumpei Uchiyama
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Iyo Takemura-Uchiyama
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Shin-Ichiro Kato
- Research Institute of Molecular Genetics, Kochi University, Kochi 783-8502, Japan
| | - Hiroaki Takeuchi
- Department of Clinical Laboratory Medicine, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
| | - Yoshihiko Sakaguchi
- Department of Microbiology, Kitasato University School of Medicine, Kanagawa 252-0374, Japan
| | - Takako Ujihara
- Science Research Center, Kochi University, Kochi 783-8505, Japan
| | - Masanori Daibata
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
| | - Hidekatsu Shimakura
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Noriaki Okamoto
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Masahiro Sakaguchi
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Shigenobu Matsuzaki
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Kochi 783-8505, Japan
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Uchiyama J, Aoki S, Uemoto Y. New approach to evaluate the lubrication process in various granule filling levels and rotating mixer sizes using a thermal effusivity sensor. Chem Pharm Bull (Tokyo) 2015; 63:164-79. [PMID: 25757487 DOI: 10.1248/cpb.c14-00634] [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]
Abstract
The principles of thermal effusivity are applied to an understanding of the detailed mechanisms of the lubrication process in a rotating mixer. The relationships and impact of the lubrication process by the pattern of powder flow, the filling level, and the rotating mixer size were investigated. Thermal effusivity profiles of the lubrication process, as obtained, indicate that lubrication is a two-phase process. The intersection point of the first and second phases (IPFS) is influenced by changing the filling level, thus changing the resulting number of avalanche flows created. The slope of the second phase (SSP) is influenced by the relationship between the number and the length of avalanche flows. Understanding this difference between the first and second phases is important to successfully evaluate the impact of proposed changes in the lubrication process. From this knowledge, a predictive model of the lubrication profile can be generated to allow an evaluation of proposed changes to the lubrication process. This model allows estimation of the lubrication profile at different filling levels and in different rotating mixer sizes. In this study, the actual lubrication profile almost coincides with the model predicted lubrication profile. Based on these findings, it is assumed that lubrication profiles at a commercial scale can be predicted from data generated at the laboratory scale. Further, it is assumed that changes in the filling level can also be estimated from the laboratory or current data.
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Affiliation(s)
- Jumpei Uchiyama
- Japan Technology, Global Demand Chain Technology, New Chemical Entity Demand Chain Unit, Eisai Demand Chain Systems, Eisai Co., Ltd
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Uchiyama J, Kato Y, Uemoto Y. Evaluation of risk and benefit in thermal effusivity sensor for monitoring lubrication process in pharmaceutical product manufacturing. Drug Dev Ind Pharm 2014; 40:999-1004. [DOI: 10.3109/03639045.2013.795581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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