World's Best Scientists 2026 revealed!
Koichi Wakabayashi

Koichi Wakabayashi

D-Index & Metrics

Medicine

D-Index
88
Citations
26264
World Ranking
13242
National Ranking
392

Koichi Wakabayashi 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 Koichi Wakabayashi 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: 610 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: 400 publications — 38th percentile

38% of scientists in this discipline score the same or lower.

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

Koichi Wakabayashi 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 Koichi Wakabayashi 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: 399 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: 88 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

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

Overview

Koichi Wakabayashi is affiliated with Hirosaki University in Japan and has contributed extensively to research in medicine and neuroscience, with a particular emphasis on neurology and cellular and molecular neuroscience. Their scholarly work spans multiple facets of neurological disorders, including Parkinson's disease, Alzheimer's disease, and other genetic neurodegenerative diseases.

The main topics in Wakabayashi's research include:

  • Parkinson's Disease Mechanisms and Treatments
  • Alzheimer's disease research and treatments
  • Neurological disorders and treatments
  • Amyotrophic Lateral Sclerosis Research
  • Genetic Neurodegenerative Diseases
  • Neurological diseases and metabolism
  • Neuroscience and Neuropharmacology Research

Wakabayashi's recent publications highlight a focused engagement with neuropathological mechanisms and clinical neuropathology. Selected recent papers include:

  • Where and how alpha-synuclein pathology spreads in Parkinson's disease: (2020), published in Neuropathology
  • Identification of multiple system atrophy mimicking Parkinson's disease or progressive supranuclear palsy (2021), Brain
  • Ribosome binding protein GCN1 regulates the cell cycle and cell proliferation and is essential for the embryonic development of mice (2020), PLoS Genetics
  • Clinical course of pathologically confirmed corticobasal degeneration and corticobasal syndrome (2023), Brain Communications
  • GABA storage and release in the medial globus pallidus in L-DOPA-induced dyskinesia priming (2020), Neurobiology of Disease

The venues where Wakabayashi has published frequently include:

  • Neuropathology
  • Journal of Neuropathology & Experimental Neurology
  • Biochemical and Biophysical Research Communications
  • Brain Communications
  • Brain Pathology

Frequent collaborators of Wakabayashi demonstrate a network of partnership primarily with researchers such as Yasuo Miki, Fumiaki Mori, Masahiko Tomiyama, Tomoya Kon, and Kunikazu Tanji, contributing to multiple publications in overlapping research areas.

Their research outputs contribute broadly to understanding processes in neurodegeneration, cellular physiology, and molecular biology through empirical studies and clinical neuropathological investigations. This interdisciplinary approach supports insights into disease mechanisms and potential therapeutic strategies.

Best Publications

  • α-Synuclein immunoreactivity in glial cytoplasmic inclusions in multiple system atrophy

    Koichi Wakabayashi;Makoto Yoshimoto;Shoji Tsuji;Hitoshi Takahashi

  • Office of Rare Diseases neuropathologic criteria for corticobasal degeneration.

    Dennis W. Dickson;C. Bergeron;S. S. Chin;C. Duyckaerts

  • Parkinson's disease: the presence of Lewy bodies in Auerbach's and Meissner's plexuses

    K. Wakabayashi;H. Takahashi;S. Takeda;E. Ohama

  • Axonal α-synuclein aggregates herald centripetal degeneration of cardiac sympathetic nerve in Parkinson's disease

    Satoshi Orimo;Toshiki Uchihara;Ayako Nakamura;Fumiaki Mori

  • The Lewy body in Parkinson's disease: molecules implicated in the formation and degradation of alpha-synuclein aggregates.

    Koichi Wakabayashi;Kunikazu Tanji;Fumiaki Mori;Hitoshi Takahashi

  • Neuropathology of autonomic nervous system in Parkinson's disease.

    Koichi Wakabayashi;Hitoshi Takahashi

  • Accumulation of alpha-synuclein/NACP is a cytopathological feature common to Lewy body disease and multiple system atrophy.

    K. Wakabayashi;Shintaro Hayashi;Akiyoshi Kakita;Mitsunori Yamada

  • NACP/α-synuclein-positive filamentous inclusions in astrocytes and oligodendrocytes of Parkinson’s disease brains

    K. Wakabayashi;S. Hayashi;M. Yoshimoto;H. Kudo

  • Phosphorylated α-Synuclein Is Ubiquitinated in α-Synucleinopathy Lesions

    Masato Hasegawa;Hideo Fujiwara;Takashi Nonaka;Koichi Wakabayashi

  • The Lewy Body in Parkinson’s Disease and Related Neurodegenerative Disorders

    Koichi Wakabayashi;Kunikazu Tanji;Saori Odagiri;Yasuo Miki

  • NACP, a presynaptic protein, immunoreactivity in Lewy bodies in Parkinson's disease

    Koichi Wakabayashi;Kayo Matsumoto;Kiyoshi Takayama;Makoto Yoshimoto

  • Abnormal expression of brain-derived neurotrophic factor and its receptor in the corticolimbic system of schizophrenic patients.

    M Takahashi;O Shirakawa;K Toyooka;N Kitamura

  • Parkinson's disease : an immunohistochemical study of Lewy body-containing neurons in the enteric nervous system

    K. Wakabayashi;H. Takahashi;E. Ohama;F. Ikuta

  • Lewy body-type degeneration in cardiac plexus in Parkinson's and incidental Lewy body diseases.

    K. Iwanaga;K. Wakabayashi;M. Yoshimoto;I. Tomita

  • Cardiac sympathetic denervation precedes neuronal loss in the sympathetic ganglia in Lewy body disease.

    Satoshi Orimo;Takeshi Amino;Yoshinori Itoh;Atsushi Takahashi

  • Degeneration of Cardiac Sympathetic Nerve Begins in the Early Disease Process of Parkinson’s Disease

    Satoshi Orimo;Atsushi Takahashi;Toshiki Uchihara;Fumiaki Mori

  • Synphilin-1 is present in Lewy bodies in Parkinson's disease.

    Koichi Wakabayashi;Simone Engelender;Makoto Yoshimoto;Shoji Tsuji

  • Selective Insolubility of α-Synuclein in Human Lewy Body Diseases Is Recapitulated in a Transgenic Mouse Model

    Philipp J. Kahle;Manuela Neumann;Laurence Ozmen;Veronika Müller

  • Regional specificity of alterations in NGF, BDNF and NT-3 levels in Alzheimer's disease

    Mako Narisawa-Saito;Koichi Wakabayashi;Shoji Tsuji;Hitoshi Takahashi

  • An autopsy case of autosomal-recessive juvenile parkinsonism with a homozygous exon 4 deletion in the parkin gene.

    Shintaro Hayashi;Koichi Wakabayashi;Atsushi Ishikawa;Hiroko Nagai

Frequent Co-Authors

Hitoshi Takahashi
Hitoshi Takahashi Niigata University
Akiyoshi Kakita
Akiyoshi Kakita Niigata University
Tadaatsu Imaizumi
Tadaatsu Imaizumi Hirosaki University
Kei Satoh
Kei Satoh Hirosaki University
Shoji Tsuji
Shoji Tsuji University of Tokyo
Toshiki Uchihara
Toshiki Uchihara Tokyo Metropolitan Institute of Medical Science
Osamu Onodera
Osamu Onodera Niigata University
Akio Nakane
Akio Nakane Hirosaki University
Takeshi Ikeuchi
Takeshi Ikeuchi Niigata University
Ken Itoh
Ken Itoh Hirosaki University

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