文献一覧: Hidemasa NAKAMINAMI (著者)

8 0 0 0 OA Prevalence of antimicrobial-resistant staphylococci in nares and affected sites of pet dogs with superficial pyoderma

著者: Hidemasa NAKAMINAMI Yuu OKAMURA Satomi TANAKA Takeaki WAJIMA Nobuo MURAYAMA Norihisa NOGUCHI
出版者: JAPANESE SOCIETY OF VETERINARY SCIENCE
雑誌: Journal of Veterinary Medical Science (ISSN:09167250)
巻号頁・発行日: vol.83, no.2, pp.214-219, 2021 (Released:2021-02-25)
参考文献数: 33
被引用文献数: 10

Currently, antimicrobial-resistant staphylococci, particularly methicillin-resistant Staphylococcus pseudintermedius (MRSP), are frequently isolated from canine superficial pyoderma in Japan. However, little is known regarding the nasal prevalence of MRSP in pet dogs. Here, we determined the prevalence of antimicrobial-resistant staphylococci in nares and affected sites of pet dogs with superficial pyoderma. Of the 125 nares and 108 affected sites of pet dogs with superficial pyoderma, 107 (13 species) and 110 (eight species) staphylococci strains, respectively, were isolated. The isolation rate of S. pseudintermedius from pyoderma sites (82/110 strains, 74.5%) was significantly higher than that from nares (57/107 strains, 53.3%) (P<0.01). Notably, the prevalence of MRSP (18/57 strains, 31.6%) in nares was equivalent to that in pyoderma sites (28/82 strains, 34.1%). Furthermore, the phenotypes and genotypes of antimicrobial resistance in MRSP strains from nares were similar to those from pyoderma sites. Our findings revealed that the prevalence of antimicrobial-resistant staphylococci in the nares of pet dogs with superficial pyoderma is the same level as that in affected sites. Therefore, considerable attention should be paid to the antimicrobial resistance of commensal staphylococci in companion animals.

2023-11-22 00:26:16
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3 0 0 0 OA Possible Dissemination of a Panton-Valentine Leukocidin–Positive Livestock-Associated Methicillin-Resistant Staphylococcus aureus CC398 Clone in Tokyo, Japan

著者: Hidemasa Nakaminami Hinako Kawasaki Shunsuke Takadama Hiroshi Kaneko Yoshiko Suzuki Hiroshi Maruyama Norihisa Noguchi
出版者: National Institute of Infectious Diseases, Japanese Journal of Infectious Diseases Editorial Committee
雑誌: Japanese Journal of Infectious Diseases (ISSN:13446304)
巻号頁・発行日: vol.74, no.1, pp.82-84, 2021-01-29 (Released:2021-01-22)
参考文献数: 15
被引用文献数: 8

In the last decade, methicillin-resistant Staphylococcus aureus (MRSA) has been identified in livestock animals, such as swine, poultry, and veal calves, and has been termed livestock-associated MRSA (LA-MRSA). LA-MRSA sequence type (ST) 398 strains can effectively infect and colonize humans, with subsequent human-to-human transmission in both community and hospital settings. Unlike other countries, LA-MRSA had not been reported in Japanese patients until 2019. However, we recently reported a case of intractable arthritis caused by an LA-MRSA CC398 (ST1232) clone, which is a single-locus variant of ST398, in a patient in Tokyo, Japan, with no animal contact (Nakaminami H, et al. Emerg Infect Dis. 2020; 26: 795-7.). Uniquely, the strain was positive for Panton-Valentine leukocidin. Here, we report the second such case in Japan. To prevent the dissemination of LA-MRSA in the Japanese community, the prevalence of the CC398 MRSA clone should be closely monitored in the future.

2021-02-18 00:07:34
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1 0 0 0 OA Characterization of Enterococcus Strains Contained in Probiotic Products

著者: Norihisa Noguchi Hidemasa Nakaminami Keisuke Nakase Masanori Sasatsu
出版者: The Pharmaceutical Society of Japan
雑誌: Biological and Pharmaceutical Bulletin (ISSN:09186158)
巻号頁・発行日: vol.34, no.9, pp.1469-1473, 2011-09-01 (Released:2011-09-01)
参考文献数: 25
被引用文献数: 16 19

Probiotics are additives containing live microbes that beneficially affect a host by improving the properties of the host intestinal microflora. Recently, advances in medical treatments have led to increased numbers of immunocompromised patients; some patients contract opportunistic infections of Enterococcus species, which are considered non-pathogenic bacteria. To evaluate the safety of probiotics containing Enterococcus strains, we isolated Enterococcus from six probiotic products and compared the pathogenic genes and antimicrobial susceptibility of the probiotic strains to those of clinical isolates. Our study showed that all Enterococcus strains contained in probiotic products were E. faecium, and no vancomycin-resistant strains were found. In addition, no pathogenic genes, such as ace, agg, gelE, cylM, cylB, cylA, cpd, cob, ccf, efaAfs, efaAfm, espfs, or espfm, were found in the probiotic strains. Pulsed-field gel electrophoresis (PFGE) analysis showed obvious genetic differences between the probiotic strains and the clinical isolates. The data suggested that the probiotic Enterococcus strains were not transmitted to hospitalized patients. Therefore, our results strongly suggest that probiotic products are unlikely agents for causing opportunistic infections.

2023-09-05 10:13:16
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1 0 0 0 OA Prevalence of antimicrobial-resistant staphylococci in nares and affected sites of pet dogs with superficial pyoderma

著者: Hidemasa NAKAMINAMI Yuu OKAMURA Satomi TANAKA Takeaki WAJIMA Nobuo MURAYAMA Norihisa NOGUCHI
出版者: JAPANESE SOCIETY OF VETERINARY SCIENCE
雑誌: Journal of Veterinary Medical Science (ISSN:09167250)
巻号頁・発行日: pp.20-0439, (Released:2020-12-18)
被引用文献数: 10

2020-12-19 01:41:22
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