Ryoma Nakao

1.5k total citations
46 papers, 1.2k citations indexed

About

Ryoma Nakao is a scholar working on Periodontics, Public Health, Environmental and Occupational Health and Microbiology. According to data from OpenAlex, Ryoma Nakao has authored 46 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Periodontics, 20 papers in Public Health, Environmental and Occupational Health and 18 papers in Microbiology. Recurrent topics in Ryoma Nakao's work include Oral microbiology and periodontitis research (26 papers), Streptococcal Infections and Treatments (17 papers) and Bacterial Infections and Vaccines (16 papers). Ryoma Nakao is often cited by papers focused on Oral microbiology and periodontitis research (26 papers), Streptococcal Infections and Treatments (17 papers) and Bacterial Infections and Vaccines (16 papers). Ryoma Nakao collaborates with scholars based in Japan, United States and Sweden. Ryoma Nakao's co-authors include Hidenobu Senpuku, Haruo Watanabe, Makoto Ohnishi, Satoru Hirayama, Bernt Eric Uhlin, Sun Nyunt Wai, Madeleine Ramstedt, Hideki Hasegawa, Shogo Takashiba and Saori Kosono and has published in prestigious journals such as Journal of Biological Chemistry, PLoS ONE and Biochemical and Biophysical Research Communications.

In The Last Decade

Ryoma Nakao

43 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryoma Nakao Japan 20 459 438 344 226 181 46 1.2k
Keith H. Turner United States 15 229 0.5× 1.1k 2.4× 135 0.4× 144 0.6× 145 0.8× 17 1.8k
Jacob P. Bitoun United States 20 307 0.7× 513 1.2× 190 0.6× 197 0.9× 195 1.1× 30 1.1k
Dilani B. Senadheera Canada 19 582 1.3× 811 1.9× 99 0.3× 299 1.3× 210 1.2× 26 1.4k
Akiko Tajima Japan 11 128 0.3× 860 2.0× 317 0.9× 89 0.4× 169 0.9× 18 1.7k
Jumei Zeng China 23 411 0.9× 629 1.4× 132 0.4× 152 0.7× 305 1.7× 60 1.2k
Hideo Yonezawa Japan 24 249 0.5× 549 1.3× 247 0.7× 144 0.6× 332 1.8× 56 1.6k
Cláudia N. H. Marques United States 13 104 0.2× 775 1.8× 194 0.6× 195 0.9× 147 0.8× 28 1.3k
Kabilan Velliyagounder United States 16 364 0.8× 556 1.3× 273 0.8× 102 0.5× 76 0.4× 25 1.1k
Peter Jorth United States 17 279 0.6× 654 1.5× 84 0.2× 123 0.5× 116 0.6× 35 1.2k
Chase Watters United States 14 147 0.3× 1.0k 2.3× 229 0.7× 55 0.2× 84 0.5× 17 1.6k

Countries citing papers authored by Ryoma Nakao

Since Specialization
Citations

This map shows the geographic impact of Ryoma Nakao'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 Ryoma Nakao with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryoma Nakao more than expected).

Fields of papers citing papers by Ryoma Nakao

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryoma Nakao. 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 Ryoma Nakao. The network helps show where Ryoma Nakao may publish in the future.

Co-authorship network of co-authors of Ryoma Nakao

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoma Nakao. A scholar is included among the top collaborators of Ryoma Nakao 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 Ryoma Nakao. Ryoma Nakao is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Yamaguchi, Takehiro, Sohkichi Matsumoto, Masayuki Shiota, et al.. (2025). BCG-derived acellular membrane vesicles elicit antimycobacterial immunity and innate immune memory. Frontiers in Immunology. 16. 1534615–1534615.
2.
Nakao, Ryoma, Takehiro Yamaguchi, Kimihiro Abe, et al.. (2025). Assessment of periodontitis vaccine using three different bacterial outer membrane vesicles in canine model. mSphere. 10(4). e0103324–e0103324.
3.
Nakao, Ryoma, et al.. (2024). Multimodal inhibitory effect of matcha on Porphyromonas gingivalis. Microbiology Spectrum. 12(7). e0342623–e0342623. 2 indexed citations
4.
Hirayama, Satoru, et al.. (2024). Biofilm‐derived membrane vesicles exhibit potent immunomodulatory activity in Pseudomonas aeruginosa PAO1. Microbiology and Immunology. 68(7). 224–236. 3 indexed citations
5.
6.
Uchiyama, Hiroki, Toshifumi Kudo, Takehiro Yamaguchi, et al.. (2024). Mucosal adjuvanticity and mucosal booster effect of colibactin-depleted probiotic Escherichia coli membrane vesicles. Human Vaccines & Immunotherapeutics. 20(1). 2337987–2337987. 1 indexed citations
7.
Nakao, Ryoma, Satoru Hirayama, Takehiro Yamaguchi, et al.. (2023). A bivalent outer membrane vesicle-based intranasal vaccine to prevent infection of periodontopathic bacteria. Vaccine. 41(30). 4369–4383. 11 indexed citations
8.
Ikeda, Tsuyoshi, et al.. (2022). Dual Inhibitory Activity of Petroselinic Acid Enriched in Fennel Against Porphyromonas gingivalis. Frontiers in Microbiology. 13. 816047–816047. 9 indexed citations
9.
Nakao, Ryoma, Tsuyoshi Ikeda, Soichi Furukawa, & Yasushi Morinaga. (2021). Curry Leaf Triggers Cell Death of P. gingivalis with Membrane Blebbing. Pathogens. 10(10). 1286–1286. 2 indexed citations
10.
11.
Nakao, Ryoma, Hidenobu Senpuku, Makoto Ohnishi, Hideki Takai, & Yorimasa Ogata. (2020). Effect of topical administration of propolis in chronic periodontitis. Odontology. 108(4). 704–714. 39 indexed citations
12.
Senpuku, Hidenobu, et al.. (2019). Effects of Complex DNA and MVs with GTF Extracted from Streptococcus mutans on the Oral Biofilm. Molecules. 24(17). 3131–3131. 34 indexed citations
13.
Nakao, Ryoma, et al.. (2018). Enhanced Biofilm Formation and Membrane Vesicle Release by Escherichia coli Expressing a Commonly Occurring Plasmid Gene, kil. Frontiers in Microbiology. 9. 2605–2605. 19 indexed citations
14.
Nakao, Ryoma, et al.. (2016). Inhibition of gingipains and Porphyromonas gingivalis growth and biofilm formation by prenyl flavonoids. Journal of Periodontal Research. 52(1). 89–96. 59 indexed citations
15.
Nakao, Ryoma, Hideki Hasegawa, Dongying Bai, Makoto Ohnishi, & Hidenobu Senpuku. (2016). Assessment of outer membrane vesicles of periodontopathic bacterium Porphyromonas gingivalis as possible mucosal immunogen. Vaccine. 34(38). 4626–4634. 48 indexed citations
16.
Nakao, Ryoma, Shogo Takashiba, Saori Kosono, et al.. (2013). Effect of Porphyromonas gingivalis outer membrane vesicles on gingipain-mediated detachment of cultured oral epithelial cells and immune responses. Microbes and Infection. 16(1). 6–16. 81 indexed citations
17.
Hanada, Nobuhiro, et al.. (2010). Inhibition of Streptococcus mutans adherence and biofilm formation using analogues of the SspB peptide. Archives of Oral Biology. 55(10). 754–762. 25 indexed citations
18.
Salam, Mohammad Abdus, Ryoma Nakao, Hideo Yonezawa, Hirohisa Watanabe, & Hidenobu Senpuku. (2006). Human T‐cell responses to oral streptococci in human PBMC‐NOD/SCID mice. Oral Microbiology and Immunology. 21(3). 169–176. 13 indexed citations
19.
Salam, Mohammad Abdus, Naoko Matsumoto, Khairul Matin, et al.. (2004). Establishment of an Animal Model Using Recombinant NOD.B10.D2Mice To Study Initial Adhesion of Oral Streptococci. Clinical and Vaccine Immunology. 11(2). 379–386. 30 indexed citations
20.
Nakao, Ryoma, Nobuhiro Hanada, Toshihiko Asano, et al.. (2003). Assessment of oral transmission using cell‐free human immunodeficiency virus‐1 in mice reconstituted with human peripheral blood leucocyte. Immunology. 109(2). 271–282. 4 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Keith H. Turner Breakdown of academic impact, for papers by Jacob P. Bitoun Breakdown of academic impact, for papers by Dilani B. Senadheera Breakdown of academic impact, for papers by Akiko Tajima Breakdown of academic impact, for papers by Jumei Zeng Breakdown of academic impact, for papers by Hideo Yonezawa Breakdown of academic impact, for papers by Cláudia N. H. Marques Breakdown of academic impact, for papers by Kabilan Velliyagounder Breakdown of academic impact, for papers by Peter Jorth Breakdown of academic impact, for papers by Chase Watters
Rankless by CCL
2026