World's Best Scientists 2026 revealed!
Yoshiaki Toyama

Yoshiaki Toyama

Award Badge
Medicine
Japan
2023

D-Index & Metrics

Medicine

D-Index
118
Citations
50789
World Ranking
4063
National Ranking
83

Yoshiaki Toyama publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Yoshiaki Toyama sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 773 publications — 86th percentile

86% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Yoshiaki Toyama D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Yoshiaki Toyama sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 118 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Research.com Recognitions

  • 2023 - Research.com Medicine in Japan Leader Award

Overview

Yoshiaki Toyama is affiliated with Keio University in Japan. Their research spans multiple disciplines within medicine, with a particular focus on surgery, biomedical engineering, organic chemistry, orthodontics, and materials chemistry. This multidisciplinary approach addresses topics such as bone tissue engineering materials, antimicrobial agents and applications, dental materials and restorations, catalytic processes in materials science, advanced combustion engine technologies, catalysis and oxidation reactions, and peptidase inhibition and analysis.

They have published studies in a variety of peer-reviewed venues, including Scientific Reports, International Journal of Engine Research, Arthritis Research & Therapy, Journal of Orthopaedic Science, and Nature Medicine.

Recent papers authored or coauthored by Yoshiaki Toyama include:

  • An antibacterial coated polymer prevents biofilm formation and implant-associated infection, 2021, Scientific Reports
  • Quantitative high-resolution transmission electron microscopy nanostructure analysis of soot oxidized in diesel spray flame periphery, 2020, International Journal of Engine Research
  • Effects of peripheral tears of the triangular fibrocartilage complex on distal radioulnar joint stability: A biomechanical study, 2020, Journal of Orthopaedic Science
  • Correction: Expression of ADAM15 in rheumatoid synovium: up-regulation by vascular endothelial growth factor and possible implications for angiogenesis, 2022, Arthritis Research & Therapy
  • Author Correction: Conditional ablation of Stat3 or Socs3 discloses a dual role for reactive astrocytes after spinal cord injury, 2025, Nature Medicine

Collaborations have occurred frequently with several researchers. Coauthors with multiple collaborations include Ken Ishii, Yasunori Okada, and Morio Matsumoto. Other collaborators include Hiroko Ishihama and Shigenori Nagai.

The primary fields of study involve medicine, and the subfields of surgery and biomedical engineering are prominent within their publications. The research topics indicate a concentration on materials science as applied to biological and medical challenges, combining expertise from organic chemistry and engineering with clinical and restorative applications.

Best Publications

  • Identification and characterization of a novel protein, periostin, with restricted expression to periosteum and periodontal ligament and increased expression by transforming growth factor β

    Keisuke Horiuchi;Norio Amizuka;Sunao Takeshita;Hiroyuki Takamatsu

  • Conditional ablation of Stat3 or Socs3 discloses a dual role for reactive astrocytes after spinal cord injury.

    Seiji Okada;Masaya Nakamura;Hiroyuki Katoh;Tamaki Miyao

  • The effect of calcium ion concentration on osteoblast viability, proliferation and differentiation in monolayer and 3D culture.

    Shinichi Maeno;Yasuo Niki;Hideo Matsumoto;Hideo Morioka

  • DC-STAMP is essential for cell–cell fusion in osteoclasts and foreign body giant cells

    Mitsuru Yagi;Takeshi Miyamoto;Yumi Sawatani;Katsuya Iwamoto

  • Transplantation of in vitro‐expanded fetal neural progenitor cells results in neurogenesis and functional recovery after spinal cord contusion injury in adult rats

    Y. Ogawa;K. Sawamoto;K. Sawamoto;T. Miyata;S. Miyao

  • Musashi1: An evolutionally conserved marker for CNS progenitor cells including neural stem cells

    Y. Kaneko;S. Sakakibara;T. Imai;A. Suzuki

  • Therapeutic potential of appropriately evaluated safe-induced pluripotent stem cells for spinal cord injury

    Osahiko Tsuji;Kyoko Miura;Yohei Okada;Kanehiro Fujiyoshi

  • Grafted human-induced pluripotent stem-cell–derived neurospheres promote motor functional recovery after spinal cord injury in mice

    Satoshi Nori;Yohei Okada;Akimasa Yasuda;Osahiko Tsuji

  • Long-term outcomes of standard discectomy for lumbar disc herniation: a follow-up study of more than 10 years

    Etsuro Yorimitsu;Kazuhiro Chiba;Yoshiaki Toyama;Kiyoshi Hirabayashi

  • TRANSPLANTATION OF HUMAN NEURAL STEM CELLS FOR SPINAL CORD INJURY IN PRIMATES

    A. Iwanami;S. Kaneko;M. Nakamura;Y. Kanemura

  • Osteoclast differentiation factor (ODF) induces osteoclast-like cell formation in human peripheral blood mononuclear cell cultures.

    Kenichiro Matsuzaki;Nobuyuki Udagawa;Naoyuki Takahashi;Kyoji Yamaguchi

  • Long-term results of expansive open-door laminoplasty for cervical myelopathy - Average 14-year follow-up study

    Kazuhiro Chiba;Yuto Ogawa;Ken Ishii;Hironari Takaishi

  • Direct stimulation of osteoclastic bone resorption by bone morphogenetic protein (BMP)-2 and expression of BMP receptors in mature osteoclasts

    H Kaneko;T Arakawa;H Mano;T Kaneda

  • A selective Sema3A inhibitor enhances regenerative responses and functional recovery of the injured spinal cord

    Shinjiro Kaneko;Akio Iwanami;Masaya Nakamura;Akiyoshi Kishino

  • Ontogeny and Multipotency of Neural Crest-Derived Stem Cells in Mouse Bone Marrow, Dorsal Root Ganglia, and Whisker Pad

    Narihito Nagoshi;Shinsuke Shibata;Yoshiaki Kubota;Masaya Nakamura

  • Cutting Edge: TNF-α-Converting Enzyme (TACE/ADAM17) Inactivation in Mouse Myeloid Cells Prevents Lethality from Endotoxin Shock

    Keisuke Horiuchi;Tokuhiro Kimura;Takeshi Miyamoto;Hironari Takaishi

  • Substrate Selectivity of Epidermal Growth Factor-Receptor Ligand Sheddases and their Regulation by Phorbol Esters and Calcium Influx

    Keisuke Horiuchi;Keisuke Horiuchi;Sylvain Le Gall;Marc Schulte;Takafumi Yamaguchi

  • IL-1β and TNFα-initiated IL-6–STAT3 pathway is critical in mediating inflammatory cytokines and RANKL expression in inflammatory arthritis

    Tomoaki Mori;Takeshi Miyamoto;Hideyuki Yoshida;Mayoko Asakawa

  • Blockade of Interleukin-6 Receptor Suppresses Reactive Astrogliosis and Ameliorates Functional Recovery in Experimental Spinal Cord Injury

    Seiji Okada;M. Nakamura;Y. Mikami;T. Shimazaki

  • One-leg standing test for elderly populations

    Takehiro Michikawa;Yuji Nishiwaki;Toru Takebayashi;Yoshiaki Toyama

Frequent Co-Authors

Masaya Nakamura
Masaya Nakamura Keio University
Kazuhiro Chiba
Kazuhiro Chiba National Defense Medical College
Hideyuki Okano
Hideyuki Okano Keio University
Takeshi Miyamoto
Takeshi Miyamoto Kumamoto University
Yasunori Okada
Yasunori Okada Juntendo University
Toshio Suda
Toshio Suda National University of Singapore
Ken J. Ishii
Ken J. Ishii University of Tokyo
Yumi Matsuzaki
Yumi Matsuzaki Shimane University
Yutaka Kawakami
Yutaka Kawakami International University Of Health And Welfare Atami Hospital

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