R
Ryuji Sakata
Researcher at Toho University
Publications - 6
Citations - 27
Ryuji Sakata is an academic researcher from Toho University. The author has contributed to research in topics: Medicine & Biology. The author has an hindex of 1, co-authored 2 publications receiving 21 citations.
Papers
More filters
Journal ArticleDOI
Molecular Characterization of Extraintestinal Escherichia coli Isolates in Japan: Relationship between Sequence Types and Mutation Patterns of Quinolone Resistance-Determining Regions Analyzed by Pyrosequencing
Nozomi Aoike,Tomoo Saga,Ryuji Sakata,Ayumi Yoshizumi,Soichiro Kimura,Morihiro Iwata,Sadako Yoshizawa,Yasuyuki Sugasawa,Yoshikazu Ishii,Keizo Yamaguchi,Kazuhiro Tateda +10 more
TL;DR: A pyrosequencing-based high-throughput method for analyzing the nucleotide sequence of the quinolone resistance-determining regions (QRDRs) of gyrA and parC successfully determined the QRDR sequences of 139 out of 140 clinical Escherichia coli isolates, 28% of which were nonsusceptible to ciprofloxacin.
Journal ArticleDOI
Worldwide Lineages of Clinical Pneumococci in a Japanese Teaching Hospital Identified by DiversiLab System
Kiyoshi Kashiwaya,Tomoo Saga,Tomoo Saga,Yoshikazu Ishii,Ryuji Sakata,Morihiro Iwata,Sadako Yoshizawa,Bin Chang,Makoto Ohnishi,Kazuhiro Tateda +9 more
TL;DR: A potential utility of DiversiLab for identifying worldwide lineage of pneumococcus is demonstrated and an optimized parameters of automated analysis should be useful especially for comparison for reference strains by "identification" function of DIVERSiLab.
Journal ArticleDOI
Comamonas thiooxydans Expressing a Plasmid-Encoded IMP-1 Carbapenemase Isolated From Continuous Ambulatory Peritoneal Dialysis of an Inpatient in Japan
Yuki Suzuki,Ryuichi Nakano,Akiyo Nakano,H. Tasaki,Tomoko Asada,Saori Horiuchi,Kai Saito,Masafumi Watanabe,Yasumistu Nomura,Daisuke Kitagawa,Sang-Tae Lee,Koji Ui,Akira Koizumi,Yuji Nishihara,Takahiro Sekine,Ryuji Sakata,Miho Ogawa,Masahito Ohnishi,Kazuhiko Tsuruya,Kei Kasahara,Hisakazu Yano +20 more
TL;DR: Comamonas thiooxydans Expressing a Plasmid-Encoded IMP-1 Carbapenemase Isolated From Continuous Ambulatory Peritoneal Dialysis of an Inpatient in Japan is described.
Journal ArticleDOI
Emergence and Evolution of Unique Plasmids Harboring blaIMP-70 and blaCTX-M-253 in Multidrug-Resistant Providencia rettgeri
Mako Watanabe,Ryuichi Nakano,Ayako Tanouchi,Akiyo Nakano,Yuki Suzuki,Kai Saito,Ryuji Sakata,Miho Ogawa,Hisakazu Yano +8 more
TL;DR: The genetic structure of the multidrug-resistant Providencia rettgeri strain is investigated and the evolution of the plasmids carrying these genes are evaluated, indicating that blaIMP-70 and blaCTX-M-253 were found on unique plasmid, indicated that they likely evolved through mutations and recombination.
Journal ArticleDOI
Antimicrobial resistance profiles of Campylobacter jejuni and Salmonella spp. isolated from enteritis patients in Japan
Yoshimasa Sasaki,Tetsuya Ikeda,Kenzo Yonemitsu,Makoto Kuroda,Miho Ogawa,Ryuji Sakata,Masashi Uema,Yoshika Momose,Kenji Ohya,D. Watanabe,Yukiko Hara-Kudo,Masashi Okamura,Tetsuo Asai +12 more
TL;DR: In this paper , the antimicrobial resistance of Campylobacter jejuni and Salmonella spp. isolated from patients with enteritis will aid in therapeutic decision-making.