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Schuichi Koizumi

Schuichi Koizumi

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Biology and Biochemistry 61 11194 10314 768 722 295 16793

Schuichi Koizumi publications per year

The chart shows the history of publications by Schuichi Koizumi between 1992 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Schuichi Koizumi published across 34 years, from 1992 to 2025, averaging 9.6 papers a year. Output peaked at 46 publications in 2022. 18 of the 326 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1992 to 2025. Vertical axis: number of publications, 0 to 46. Peak 46 publications in 2022. 1992: 1 publication 1993: 0 publications 1994: 9 publications 1995: 15 publications 1996: 8 publications 1997: 4 publications 1998: 7 publications 1999: 5 publications 2000: 5 publications 2001: 3 publications 2002: 5 publications 2003: 5 publications 2004: 8 publications 2005: 6 publications 2006: 4 publications 2007: 6 publications 2008: 1 publication 2009: 6 publications 2010: 4 publications 2011: 7 publications 2012: 7 publications 2013: 9 publications 2014: 5 publications 2015: 6 publications 2016: 9 publications 2017: 17 publications 2018: 27 publications 2019: 22 publications 2020: 11 publications 2021: 24 publications 2022: 46 publications 2023: 16 publications 2024: 8 publications 2025: 10 publications
1992 2025

326 publications in total across all disciplines

View publications per year as a table
Schuichi Koizumi: publications per year, 1992 to 2025
Year Publications
1992 1
1993 0
1994 9
1995 15
1996 8
1997 4
1998 7
1999 5
2000 5
2001 3
2002 5
2003 5
2004 8
2005 6
2006 4
2007 6
2008 1
2009 6
2010 4
2011 7
2012 7
2013 9
2014 5
2015 6
2016 9
2017 17
2018 27
2019 22
2020 11
2021 24
2022 46
2023 16
2024 8
2025 10
Total 326
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Schuichi Koizumi publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Schuichi Koizumi sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 100 bars. Horizontal axis: publications, 47–56 to 1,028+. Vertical axis: number of scientists, 0 to 980. Most scientists, 980, have 127–136 publications. The last bar groups every scientist with 1,028 publications or more. The highlighted bar, 287–296 publications, is where this scientist sits. 47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 417 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 196 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 59 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientist 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientist 1,028+ publications: 100 scientists
47–56 publications 1,028+

This scientist: 295 publications — 77th percentile

77% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

View publications distribution as a table
Number of Biology and Biochemistry scientists by publication count, Research.com 2026 ranking edition. Based on 19,587 ranked scientists.
Publications Scientists This scientist
47–56 8
57–66 35
67–76 106
77–86 231
87–96 413
97–106 546
107–116 704
117–126 848
127–136 980
137–146 942
147–156 969
157–166 949
167–176 951
177–186 915
187–196 787
197–206 840
207–216 733
217–226 708
227–236 651
237–246 605
247–256 510
257–266 524
267–276 434
277–286 417
287–296 350 295
297–306 363
307–316 315
317–326 296
327–336 261
337–346 240
347–356 219
357–366 196
367–376 154
377–386 161
387–396 155
397–406 145
407–416 124
417–426 112
427–436 132
437–446 116
447–456 99
457–466 81
467–476 91
477–486 80
487–496 80
497–506 59
507–516 36
517–526 46
527–536 54
537–546 44
547–556 43
557–566 43
567–576 42
577–586 25
587–596 34
597–606 23
607–616 33
617–626 31
627–636 27
637–646 25
647–656 28
657–666 34
667–676 18
677–686 16
687–696 10
697–706 12
707–716 21
717–726 12
727–736 12
737–746 10
747–756 7
757–766 13
767–776 15
777–786 13
787–796 9
797–806 9
807–816 7
817–826 4
827–836 9
837–846 7
847–856 3
857–866 5
867–876 5
877–886 11
887–896 3
897–906 4
907–916 7
917–926 5
927–936 6
937–946 6
947–956 3
957–966 7
967–976 2
977–986 2
987–996 1
997–1,006 5
1,007–1,016 2
1,017–1,026 2
1,027 1
1,028+ 100
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Schuichi Koizumi D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Schuichi Koizumi sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 65 bars. Horizontal axis: D-Index, 40–41 to 167+. Vertical axis: number of scientists, 0 to 1,253. Most scientists, 1,253, have 58–59 D-Index. The last bar groups every scientist with 167 D-Index or more. The highlighted bar, 60–61 D-Index, is where this scientist sits. 40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 71 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40–41 D-Index 167+

This scientist: 61 D-Index — 44th percentile

44% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

View D-Index distribution as a table
Number of Biology and Biochemistry scientists by D-index, Research.com 2026 ranking edition. Based on 19,587 ranked scientists.
D-Index Scientists This scientist
40–41 80
42–43 183
44–45 316
46–47 504
48–49 718
50–51 899
52–53 1,025
54–55 1,149
56–57 1,235
58–59 1,253
60–61 1,162 61
62–63 1,130
64–65 1,031
66–67 897
68–69 814
70–71 714
72–73 709
74–75 596
76–77 512
78–79 473
80–81 412
82–83 373
84–85 358
86–87 285
88–89 273
90–91 227
92–93 208
94–95 193
96–97 153
98–99 157
100–101 148
102–103 120
104–105 113
106–107 100
108–109 86
110–111 67
112–113 71
114–115 73
116–117 64
118–119 53
120–121 60
122–123 54
124–125 43
126–127 38
128–129 49
130–131 26
132–133 18
134–135 23
136–137 32
138–139 32
140–141 27
142–143 19
144–145 22
146–147 12
148–149 16
150–151 14
152–153 10
154–155 13
156–157 10
158–159 7
160–161 9
162–163 13
164–165 4
166 4
167+ 98
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Overview

Schuichi Koizumi is affiliated with the University of Yamanashi in Japan and conducts research primarily in the fields of Neuroscience, Biochemistry, Genetics and Molecular Biology, and Medicine. Their work spans several subfields including Neurology, Molecular Biology, Physiology, Cellular and Molecular Neuroscience, and Immunology.

Their research addresses a range of topics with particular focus on mechanisms of neuroinflammation and neurodegeneration, neuroscience and neuropharmacology, adenosine and purinergic signaling, RNA regulation in disease, glaucoma and retinal disorders, neurogenesis and neuroplasticity, as well as retinal development and related disorders.

Recent publications associated with Schuichi Koizumi include the following:

  • Reactive astrocyte nomenclature, definitions, and future directions, 2021, Nature Neuroscience
  • Reactive astrocyte-driven epileptogenesis is induced by microglia initially activated following status epilepticus, 2021, JCI Insight
  • Phagocytic astrocytes: Emerging from the shadows of microglia, 2022, Glia
  • Neutrophils initiate and exacerbate Stevens-Johnson syndrome and toxic epidermal necrolysis, 2021, Science Translational Medicine
  • Potential roles of astrocytes and Müller cells in the pathogenesis of glaucoma, 2020, Journal of Pharmacological Sciences

Frequent coauthors in their collaborations include:

  • Eiji Shigetomi
  • Youichi Shinozaki
  • Bijay Parajuli
  • Kozo Saito
  • Kenji F. Tanaka

Schuichi Koizumi has regularly published in several academic venues, with notable frequency in:

  • Proceedings for Annual Meeting of The Japanese Pharmacological Society
  • International Journal of Molecular Sciences
  • Glia
  • Journal of Visualized Experiments
  • Folia Pharmacologica Japonica

Best Publications

  • Reactive astrocyte nomenclature, definitions, and future directions

    Carole Escartin;Elena Galea;András Lakatos;James P. O’Callaghan

  • P2x4 receptors induced in spinal microglia gate tactile allodynia after nerve injury

    Makoto Tsuda;Yukari Shigemoto-Mogami;Schuichi Koizumi;Akito Mizokoshi

  • UDP acting at P2Y6 receptors is a mediator of microglial phagocytosis

    Schuichi Koizumi;Yukari Shigemoto-Mogami;Kaoru Nasu-Tada;Yoichi Shinozaki

  • Microglia contact induces synapse formation in developing somatosensory cortex.

    Akiko Miyamoto;Hiroaki Wake;Ayako Wendy Ishikawa;Kei Eto;Kei Eto

  • Activation of p38 mitogen-activated protein kinase in spinal hyperactive microglia contributes to pain hypersensitivity following peripheral nerve injury.

    Makoto Tsuda;Akito Mizokoshi;Yukari Shigemoto-Mogami;Schuichi Koizumi

  • Reactive astrocytes function as phagocytes after brain ischemia via ABCA1-mediated pathway

    Yosuke M. Morizawa;Yosuke M. Morizawa;Yuri Hirayama;Noubuhiko Ohno;Shinsuke Shibata

  • Transformation of Astrocytes to a Neuroprotective Phenotype by Microglia via P2Y1 Receptor Downregulation

    Youichi Shinozaki;Keisuke Shibata;Keitaro Yoshida;Eiji Shigetomi

  • Functional vanilloid receptors in cultured normal human epidermal keratinocytes

    Kaori Inoue;Schuichi Koizumi;Shigeyoshi Fuziwara;Sumiko Denda

  • Functional Role for Piezo1 in Stretch-evoked Ca2+ Influx and ATP Release in Urothelial Cell Cultures

    Tatsuya Miyamoto;Tsutomu Mochizuki;Hiroshi Nakagomi;Satoru Kira

  • The TRPV4 Cation Channel Mediates Stretch-evoked Ca2+ Influx and ATP Release in Primary Urothelial Cell Cultures

    Tsutomu Mochizuki;Takaaki Sokabe;Takaaki Sokabe;Isao Araki;Kayoko Fujishita

  • Dynamic inhibition of excitatory synaptic transmission by astrocyte-derived ATP in hippocampal cultures.

    Schuichi Koizumi;Kayoko Fujishita;Makoto Tsuda;Yukari Shigemoto-Mogami

  • Mechanical Allodynia Caused by Intraplantar Injection of P2X Receptor Agonist in Rats: Involvement of Heteromeric P2X2/3 Receptor Signaling in Capsaicin-Insensitive Primary Afferent Neurons

    Makoto Tsuda;Schuichi Koizumi;Aya Kita;Yukari Shigemoto

  • Ca2+ waves in keratinocytes are transmitted to sensory neurons: the involvement of extracellular ATP and P2Y2 receptor activation.

    Schuichi Koizumi;Kayoko Fujishita;Kaori Inoue;Yukari Shigemoto-Mogami

  • Purinergic receptors in microglia: Functional modal shifts of microglia mediated by P2 and P1 receptors

    Schuichi Koizumi;Keiko Ohsawa;Kazuhide Inoue;Shinichi Kohsaka

  • Mechanisms underlying extracellular ATP-evoked interleukin-6 release in mouse microglial cell line, MG-5

    Yukari Shigemoto-Mogami;Schuichi Koizumi;Makoto Tsuda;Keiko Ohsawa

  • Microglia release ATP by exocytosis

    Yoshio Imura;Yosuke Morizawa;Ryohei Komatsu;Keisuke Shibata

  • Cortical astrocytes rewire somatosensory cortical circuits for peripheral neuropathic pain

    Sun Kwang Kim;Sun Kwang Kim;Hideaki Hayashi;Tatsuya Ishikawa;Keisuke Shibata

  • Characterization of Elementary Ca2+ Release Signals in NGF-Differentiated PC12 Cells and Hippocampal Neurons

    Schuichi Koizumi;Martin D Bootman;Laura K Bobanović;Michael J Schell

  • ATP stimulation of Ca2+-dependent plasminogen release from cultured microglia

    Kazuhide Inoue;Kazuyuki Nakajima;Takako Morimoto;Yoshiaki Kikuchi

  • Aberrant Calcium Signals in Reactive Astrocytes: A Key Process in Neurological Disorders

    Eiji Shigetomi;Kozo Saito;Kozo Saito;Fumikazu Sano;Schuichi Koizumi

Frequent Co-Authors

Kazuhide Inoue
Kazuhide Inoue Kyushu University
Makoto Tsuda
Makoto Tsuda Kyushu University
Kenji F. Tanaka
Kenji F. Tanaka Keio University
Yoshinori Moriyama
Yoshinori Moriyama Okayama University
Junichi Nabekura
Junichi Nabekura National Institutes of Natural Sciences
Kazuhiro Ikenaka
Kazuhiro Ikenaka National Institutes of Natural Sciences
Shinichi Kohsaka
Shinichi Kohsaka Keio University
Christian Gachet
Christian Gachet University of Strasbourg
Katsuhiko Mikoshiba
Katsuhiko Mikoshiba ShanghaiTech University
Martin D. Bootman
Martin D. Bootman The Open University

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