Eiji Yokoyama

Erratum: Global population structure of Shiga toxin-producing Escherichia coli O103:H2 and the variation in their major virulence factor-encoding genetic elements

Itsuki Taniguchi, Yo MORIMOTO, Yoko Kimura, Junji Seto et autres

Microbiology Society journals contain high-quality research papers and topical review articles. We are a not-for-profit publisher and we support and invest in the microbiology community, to the benefit of everyone. This supports our principal goal to develop, expand and strengthen the networks …

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Global population structure of Shiga toxin-producing Escherichia coli O103:H2 and the variation in their major virulence factor-encoding genetic elements

Itsuki Taniguchi, Yo MORIMOTO, Yoko Kimura, Junji Seto et autres

Shiga toxin (Stx)-producing Escherichia coli (STEC) is a major cause of serious gastrointestinal illness, including diarrhoea, haemorrhagic colitis and life-threatening haemolytic-uraemic syndrome. Although O157:H7 STEC strains are the most prevalent, the incidence of STEC infections caused by several other serotypes has recently …

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Corrigendum to “Successful detection of an unrecognized outbreak of Mycobacterium tuberculosis in the modern Beijing subfamily through combined molecular epidemiological and population genetic analyses” [J Infect Chemother 31 (6) (2025) 102700]

Shinichiro Hirai, Masaki Nakamura, Satoshi Kawato, Yushi Hachisu et autres

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Successful detection of an unrecognized outbreak of Mycobacterium tuberculosis in the modern Beijing subfamily through combined molecular epidemiological and population genetic analyses

Shinichiro Hirai, Masaki Nakamura, Satoshi Kawato, Yushi Hachisu et autres

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Another advantage of multi-locus variable-number tandem repeat analysis that can putatively subdivide enterohemorrhagic Escherichia coli O157 strains into clades by maximum a posteriori estimation

Shinichiro Hirai, Eiji Yokoyama, Naoshi Ando, Junji Seto et autres

Enterohemorrhagic Escherichia coli O157 (O157) strains can be subdivided into clades based on their single-nucleotide polymorphisms, but such analysis using conventional methods requires intense effort by laboratories. Although multi-locus variable-number tandem repeat analysis (MLVA), which can be performed with low laboratory burden, …

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Alteration of a Shiga toxin-encoding phage associated with a change in toxin production level and disease severity in Escherichia coli

Tatsuya Miyata, Itsuki Taniguchi, Keiji Nakamura, Yasuhiro Gotoh et autres

Among the nine clades of Shiga toxin (Stx)-producing Escherichia coli O157:H7, clade 8 is thought to be highly pathogenic, as it causes severe disease more often than other clades. Two subclades have been proposed, but there are conflicting reports on intersubclade differences …

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Simultaneous High-speed and High-resolution PIV and Heat Flux Measurements near Piston Top under Tumble Enhanced Condition

瑛士 横山, Eiji Yokoyama, 祐康 志村, Masayasu Shimura et autres

Simultaneous High-speed and High-resolution PIV and Heat Flux Measurements near Piston Top under Tumble Enhanced Condition

Eiji Yokoyama, Masayasu Shimura, Makoto Kamata, Osamu Nakabeppu et autres

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Molecular epidemiological analysis of Mycobacterium tuberculosis modern Beijing genotype strains isolated in Chiba Prefecture over 10 years

Takashi Kikuchi, Masaki Nakamura, Yushi Hachisu, Shinichiro Hirai et autres

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Clarification of relationship between single-nucleotide polymorphism panels of Shiga toxin-producing Escherichia coli O157:H7/H- strains

Shinichiro Hirai, Eiji Yokoyama, Yuh Shiwa, Taichiro Ishige et autres

Eighty strains of enterohemorrhagic Escherichia coli O157:H7/H- were analyzed by three single-nucleotide polymorphism (SNP) panels using whole-genome sequencing data. The partial concordance of SNP types among the different SNP panels was observed on minimum spanning trees reconstructed with SNP data. As for …

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Enhanced production of Shiga toxin 1 in enterohaemorrhagic Escherichia coli by oxygen

Takeshi Shimizu, Manami Onuki, Shin Suzuki, Shinichiro Hirai et autres

Enterohaemorrhagic Escherichia coli (EHEC) produces Shiga toxin 1 (Stx1) and Shiga toxin 2 (Stx2). Although stx1 and stx2 were found within the late operons of the Stx-encoding phages (Stx-phages), stx1 could mainly be transcribed from the stx1 promoter (P Stx1), which represents …

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The global population structure and evolutionary history of the acquisition of major virulence factor-encoding genetic elements in Shiga toxin-producing Escherichia coli O121:H19

Ruriko Nishida, Keiji Nakamura, Itsuki Taniguchi, Kazunori Murase et autres

(STEC) are foodborne pathogens causing serious diseases, such as haemorrhagic colitis and haemolytic uraemic syndrome. Although O157:H7 STEC strains have been the most prevalent, incidences of STEC infections by several other serotypes have recently increased. O121:H19 STEC is one of these major …

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