Ken Shimuta

2.0k total citations · 1 hit paper
42 papers, 1.5k citations indexed

About

Ken Shimuta is a scholar working on Microbiology, Physiology and Epidemiology. According to data from OpenAlex, Ken Shimuta has authored 42 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Microbiology, 19 papers in Physiology and 6 papers in Epidemiology. Recurrent topics in Ken Shimuta's work include Bacterial Infections and Vaccines (33 papers), Reproductive tract infections research (31 papers) and Syphilis Diagnosis and Treatment (19 papers). Ken Shimuta is often cited by papers focused on Bacterial Infections and Vaccines (33 papers), Reproductive tract infections research (31 papers) and Syphilis Diagnosis and Treatment (19 papers). Ken Shimuta collaborates with scholars based in Japan, Sweden and United States. Ken Shimuta's co-authors include Makoto Ohnishi, Shu‐ichi Nakayama, Magnus Unemo, Daniel Golparian, Takeshi Saika, Kazuhiro Iwasaku, Jo Kitawaki, Shinji Hoshina, Takuya Kawahata and Keiichi Furubayashi and has published in prestigious journals such as PLoS ONE, Journal of Bacteriology and Journal of Clinical Microbiology.

In The Last Decade

Ken Shimuta

37 papers receiving 1.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Is Neisseria gonorrhoeae Initiating a Future Era of Untreatable Gonorrhea?: Detailed Characterization of the First Strain with High-Level Resistance to Ceftriaxone

2011 517 citations Makoto Ohnishi, Daniel Golparian et al. Antimicrobial Agents and Chemotherapy profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ken Shimuta Japan	17	1.3k	729	218	202	143	42	1.5k
David L. Trees United States	23	1.3k 1.1×	823 1.1×	390 1.8×	240 1.2×	207 1.4×	45	1.8k
Takeshi Saika Japan	17	885 0.7×	452 0.6×	274 1.3×	154 0.8×	101 0.7×	55	1.3k
Christine Seah Canada	13	420 0.3×	216 0.3×	203 0.9×	125 0.6×	162 1.1×	24	878
Athena Limnios Australia	16	1.1k 0.8×	591 0.8×	260 1.2×	140 0.7×	81 0.6×	27	1.1k
Jacqueline T. Balthazar United States	21	991 0.8×	226 0.3×	327 1.5×	61 0.3×	298 2.1×	30	1.5k
Margaret C. Bash United States	16	528 0.4×	124 0.2×	288 1.3×	42 0.2×	131 0.9×	33	695
Cau D. Pham United States	16	437 0.3×	221 0.3×	667 3.1×	93 0.5×	149 1.0×	47	1.4k
Michael France United States	17	824 0.7×	58 0.1×	556 2.6×	83 0.4×	537 3.8×	42	1.3k
Yasser M. AbdelRahman United States	15	871 0.7×	48 0.1×	460 2.1×	78 0.4×	318 2.2×	19	1.1k
Teresa Street United Kingdom	11	191 0.2×	91 0.1×	244 1.1×	62 0.3×	284 2.0×	16	847

Countries citing papers authored by Ken Shimuta

Since Specialization

Citations

This map shows the geographic impact of Ken Shimuta's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ken Shimuta with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ken Shimuta more than expected).

Fields of papers citing papers by Ken Shimuta

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ken Shimuta. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ken Shimuta. The network helps show where Ken Shimuta may publish in the future.

Co-authorship network of co-authors of Ken Shimuta

This figure shows the co-authorship network connecting the top 25 collaborators of Ken Shimuta. A scholar is included among the top collaborators of Ken Shimuta based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ken Shimuta. Ken Shimuta is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Takahashi, Hideyuki, Kazuhiro Horiba, Munehisa Fukusumi, et al.. (2025). Emergence of high-level penicillin-resistant Neisseria meningitidis harboring ROB-1-type β-lactamase gene in Japan. Journal of Infection and Chemotherapy. 31(4). 102679–102679.

Aoki, Kotaro, et al.. (2024). Molecular epidemiological and antimicrobial-resistant mechanisms analysis of prolonged Neisseria gonorrhoeae collection between 1971 and 2005 in Japan. JAC-Antimicrobial Resistance. 6(2). dlae040–dlae040. 4 indexed citations

Takahashi, Hideyuki, Masatomo Morita, Hajime Kamiya, et al.. (2022). Genomic characterization of Japanese meningococcal strains isolated over a 17-year period between 2003 and 2020 in Japan. Vaccine. 41(2). 416–426. 11 indexed citations

Takahashi, Hideyuki, et al.. (2022). Genetic characterization of clonal complex sequence type 2057 (cc2057) serogroup B Neisseria meningitidis strains unique to Japan and identification of a capsular-switched serogroup Y isolate cc2057. Journal of Medical Microbiology. 71(3). 5 indexed citations

Yahara, Koji, C. Kevin, Tatum D. Mortimer, et al.. (2021). Emergence and evolution of antimicrobial resistance genes and mutations in Neisseria gonorrhoeae. Genome Medicine. 13(1). 51–51. 35 indexed citations

Aoki, Kotaro, et al.. (2021). Molecular characterization of Neisseria gonorrhoeae isolates collected through a national surveillance programme in Japan, 2013: evidence of the emergence of a ceftriaxone-resistant strain from a ceftriaxone-susceptible lineage. Journal of Antimicrobial Chemotherapy. 76(7). 1769–1775. 12 indexed citations

Arima, Yuzo, et al.. (2020). Epidemiology, molecular strain types, and macrolide resistance of Treponema pallidum in Japan, 2017–2018. Journal of Infection and Chemotherapy. 26(10). 1042–1047. 7 indexed citations

Lee, Kenichi, Shu‐ichi Nakayama, Kayo Osawa, et al.. (2019). Clonal expansion and spread of the ceftriaxone-resistant Neisseria gonorrhoeae strain FC428, identified in Japan in 2015, and closely related isolates. Journal of Antimicrobial Chemotherapy. 74(7). 1812–1819. 51 indexed citations

Arima, Yuzo, Ken Shimuta, Ichiro Itoda, et al.. (2018). Molecular Typing and Macrolide Resistance Analyses of Treponema pallidum in Heterosexuals and Men Who Have Sex with Men in Japan, 2017. Journal of Clinical Microbiology. 57(1). 14 indexed citations

10.

Yamagishi, Yuka, Kenichi Lee, Ken Shimuta, et al.. (2018). Neisseria cinerea with High Ceftriaxone MIC Is a Source of Ceftriaxone and Cefixime Resistance-Mediating penA Sequences in Neisseria gonorrhoeae. Antimicrobial Agents and Chemotherapy. 62(3). 41 indexed citations

11.

Deguchi, Takashi, Shin Ito, Kengo Horie, et al.. (2017). Antimicrobial susceptibility of Haemophilus influenzae strains isolated from the urethra of men with acute urethritis and/or epididymitis. Journal of Infection and Chemotherapy. 23(11). 804–807. 16 indexed citations

12.

Mitobe, Jiro, Ritam Sinha, Soma Mitra, et al.. (2017). An attenuated Shigella mutant lacking the RNA-binding protein Hfq provides cross-protection against Shigella strains of broad serotype. PLoS neglected tropical diseases. 11(7). e0005728–e0005728. 14 indexed citations

13.

Nakayama, Shu‐ichi, Ken Shimuta, Keiichi Furubayashi, et al.. (2016). New Ceftriaxone- and Multidrug-Resistant Neisseria gonorrhoeae Strain with a Novel Mosaic penA Gene Isolated in Japan. Antimicrobial Agents and Chemotherapy. 60(7). 4339–4341. 147 indexed citations

14.

Ito, Shin, Nozomu Hanaoka, Ken Shimuta, et al.. (2016). Male non‐gonococcal urethritis: From microbiological etiologies to demographic and clinical features. International Journal of Urology. 23(4). 325–331. 57 indexed citations

15.

Shimuta, Ken, Yuko Watanabe, Shu‐ichi Nakayama, et al.. (2015). Emergence and evolution of internationally disseminated cephalosporin-resistant Neisseria gonorrhoeae clones from 1995 to 2005 in Japan. BMC Infectious Diseases. 15(1). 378–378. 56 indexed citations

16.

Morita‐Ishihara, Tomoko, Magnus Unemo, Keiichi Furubayashi, et al.. (2014). Treatment failure with 2 g of azithromycin (extended-release formulation) in gonorrhoea in Japan caused by the international multidrug-resistant ST1407 strain of Neisseria gonorrhoeae. Journal of Antimicrobial Chemotherapy. 69(8). 2086–2090. 23 indexed citations

17.

Nakayama, Shu‐ichi, et al.. (2014). Characterization of azithromycin-resistant Neisseria gonorrhoeae isolated in Tokyo in 2005–2011. Journal of Infection and Chemotherapy. 20(5). 339–341. 9 indexed citations

18.

Ohnishi, Makoto, Daniel Golparian, Ken Shimuta, et al.. (2011). Is Neisseria gonorrhoeae Initiating a Future Era of Untreatable Gonorrhea?: Detailed Characterization of the First Strain with High-Level Resistance to Ceftriaxone. Antimicrobial Agents and Chemotherapy. 55(7). 3538–3545. 517 indexed citations breakdown →

19.

Shimuta, Ken, Makoto Ohnishi, Sunao Iyoda, et al.. (2009). The hemolytic and cytolytic activities of Serratia marcescensphospholipase A (PhlA) depend on lysophospholipid production by PhlA. BMC Microbiology. 9(1). 261–261. 48 indexed citations

20.

Shimuta, Ken, et al.. (2000). Expression and Secretion of Scytalidopepsin B, an Acid Protease fromScytalidium lignicolum, in Yeast. Bioscience Biotechnology and Biochemistry. 64(7). 1542–1546. 10 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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