World's Best Scientists 2026 revealed!
Keiichi Hiramatsu

Keiichi Hiramatsu

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Microbiology
Japan
2023

D-Index & Metrics

Microbiology

D-Index
96
Citations
46042
World Ranking
492
National Ranking
13

Medicine

D-Index
96
Citations
46085
World Ranking
9509
National Ranking
260

Research.com Recognitions

  • 2023 - Research.com Microbiology in Japan Leader Award
  • 2022 - Research.com Microbiology in Japan Leader Award

Overview

Keiichi Hiramatsu is affiliated with Juntendo University in Japan and has contributed extensively to research in biochemistry, genetics, molecular biology, and medicine. Their work spans multiple subfields including molecular biology, infectious diseases, plant science, clinical biochemistry, and ecology.

The scientist has a particular focus on antimicrobial resistance in Staphylococcus species, bacterial identification and susceptibility testing, and studies on plant pathogenic bacteria. Their research also covers bacterial biofilms and quorum sensing, genomics and phylogenetic studies, as well as investigations into Clostridium difficile and Clostridium perfringens. Additionally, they have explored microbial community ecology and physiology.

Recent publications authored by Keiichi Hiramatsu include the following:

  • "A Soluble Fiber Diet Increases Bacteroides fragilis Group Abundance and Immunoglobulin A Production in the Gut," 2020, Applied and Environmental Microbiology
  • "Genetic and phenotypic diversity of methicillin-resistant Staphylococcus aureus among Japanese inpatients in the early 1980s," 2021, Scientific Reports
  • "CID12261165, a flavonoid compound as antibacterial agents against quinolone-resistant Staphylococcus aureus," 2023, Scientific Reports
  • "Epidemiology of methicillin-resistant Staphylococcus aureus in a Japanese neonatal intensive care unit," 2020, Pediatrics International
  • "Pseudomonas atagosis sp. nov., and Pseudomonas akappagea sp. nov., New Soil Bacteria Isolated from Samples on the Volcanic Island Izu Oshima, Tokyo," 2020, Current Microbiology

Keiichi Hiramatsu frequently publishes in journals such as Scientific Reports, Current Microbiology, Applied and Environmental Microbiology, Pediatrics International, and the Japanese Journal of Infectious Diseases. The scientist collaborates regularly with coauthors including Yuh Morimoto, Tadashi Baba, Teruo Kirikae, Yuki Uehara, and Takashi Sasaki, with multiple joint publications.

Best Publications

  • Methicillin-resistant Staphylococcus aureus clinical strain with reduced vancomycin susceptibility.

    K Hiramatsu;H Hanaki;T Ino;K Yabuta

  • Whole genome sequencing of meticillin-resistant Staphylococcus aureus

    Makoto Kuroda;Toshiko Ohta;Ikuo Uchiyama;Tadashi Baba

  • Genome and virulence determinants of high virulence community-acquired MRSA.

    Tadashi Baba;Fumihiko Takeuchi;Makoto Kuroda;Harumi Yuzawa

  • Dissemination in Japanese hospitals of strains of Staphylococcus aureus heterogeneously resistant to vancomycin

    Keiichi Hiramatsu;Nanae Aritaka;Hideaki Hanaki;Shiori Kawasaki

  • A New Class of Genetic Element, Staphylococcus Cassette Chromosome mec, Encodes Methicillin Resistance in Staphylococcus aureus

    Y. Katayama;T. Ito;K. Hiramatsu

  • Structural comparison of three types of staphylococcal cassette chromosome mec integrated in the chromosome in methicillin-resistant Staphylococcus aureus.

    Teruyo Ito;Yuki Katayama;Kazumi Asada;Namiko Mori

  • Combination of multiplex PCRs for staphylococcal cassette chromosome mec type assignment: rapid identification system for mec, ccr, and major differences in junkyard regions.

    Yoko Kondo;Teruyo Ito;Xiao Xue Ma;Shinya Watanabe

  • The emergence and evolution of methicillin-resistant Staphylococcus aureus.

    Keiichi Hiramatsu;Longzhu Cui;Makoto Kuroda;Teruyo Ito

  • Dissemination of New Methicillin-Resistant Staphylococcus aureus Clones in the Community

    Keiko Okuma;Kozue Iwakawa;John D. Turnidge;Warren B. Grubb

  • Vancomycin-resistant Staphylococcus aureus: a new model of antibiotic resistance

    Keiichi Hiramatsu

  • Novel Type V Staphylococcal Cassette Chromosome mec Driven by a Novel Cassette Chromosome Recombinase, ccrC

    Teruyo Ito;Xiao Xue Ma;Fumihiko Takeuchi;Keiko Okuma

  • Novel Type of Staphylococcal Cassette Chromosome mec Identified in Community-Acquired Methicillin-Resistant Staphylococcus aureus Strains

    Xiao Xue Ma;Teruyo Ito;Chuntima Tiensasitorn;Mantana Jamklang

  • Classification of staphylococcal cassette chromosome mec (SCCmec) : guidelines for reporting novel SCCmec elements.

    T. Ito;K. Hiramatsu;D. Oliviera;H. de Lencastre

  • Cell Wall Thickening Is a Common Feature of Vancomycin Resistance in Staphylococcus aureus

    Longzhu Cui;Xiaoxue Ma;Katsuhiro Sato;Keiko Okuma

  • Cloning and Nucleotide Sequence Determination of the Entire mec DNA of Pre-Methicillin-Resistant Staphylococcus aureus N315

    T. Ito;Y. Katayama;K. Hiramatsu

  • Genome Sequence of Staphylococcus aureus Strain Newman and Comparative Analysis of Staphylococcal Genomes: Polymorphism and Evolution of Two Major Pathogenicity Islands

    Tadashi Baba;Taeok Bae;Olaf Schneewind;Fumihiko Takeuchi

  • Characterization of Staphylococci with Reduced Susceptibilities to Vancomycin and Other Glycopeptides

    Fred C. Tenover;Michael V. Lancaster;Bertha C. Hill;Christine D. Steward

  • Insights on antibiotic resistance of Staphylococcus aureus from its whole genome: genomic island SCC

    Teruyo Ito;Keiko Okuma;Xiao Xue Ma;Harumi Yuzawa

  • Two-component system VraSR positively modulates the regulation of cell-wall biosynthesis pathway in Staphylococcus aureus.

    Makoto Kuroda;Hiroko Kuroda;Taku Oshima;Fumihiko Takeuchi

  • Staphylococcal cassette chromosome mec (SCCmec) typing of methicillin-resistant Staphylococcus aureus strains isolated in 11 Asian countries : a proposal for a new nomenclature for SCCmec elements

    Piriyaporn Chongtrakool;Piriyaporn Chongtrakool;Teruyo Ito;Xiao Xue Ma;Yoko Kondo

Frequent Co-Authors

Teruyo Ito
Teruyo Ito Juntendo University
Fumihiko Takeuchi
Fumihiko Takeuchi Juntendo University
Makoto Kuroda
Makoto Kuroda National Institutes of Health
Kazuhisa Sekimizu
Kazuhisa Sekimizu University of Tokyo
Teruo Kirikae
Teruo Kirikae Juntendo University
Fred C. Tenover
Fred C. Tenover University of Dayton
Ko Okumura
Ko Okumura Juntendo University
Susan Boyle-Vavra
Susan Boyle-Vavra University of Chicago
Isao Nagaoka
Isao Nagaoka Juntendo University
Robert S. Daum
Robert S. Daum University of Chicago

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