World's Best Scientists 2026 revealed!
Michiaki Koga

Michiaki Koga

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 51 4314 3968 179 165 171 10246

Michiaki Koga publications per year

The chart shows the history of publications by Michiaki Koga between 1980 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Michiaki Koga published across 46 years, from 1980 to 2025, averaging 5.8 papers a year. Output peaked at 18 publications in 2015. 12 of the 265 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1980 to 2025. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2015. 1980: 1 publication 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 1 publication 1986: 0 publications 1987: 3 publications 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 2 publications 1992: 2 publications 1993: 4 publications 1994: 3 publications 1995: 7 publications 1996: 2 publications 1997: 4 publications 1998: 8 publications 1999: 16 publications 2000: 8 publications 2001: 12 publications 2002: 14 publications 2003: 11 publications 2004: 13 publications 2005: 8 publications 2006: 9 publications 2007: 11 publications 2008: 7 publications 2009: 5 publications 2010: 2 publications 2011: 5 publications 2012: 9 publications 2013: 9 publications 2014: 7 publications 2015: 18 publications 2016: 2 publications 2017: 11 publications 2018: 6 publications 2019: 3 publications 2020: 6 publications 2021: 11 publications 2022: 7 publications 2023: 6 publications 2024: 5 publications 2025: 7 publications
1980 2025

265 publications in total across all disciplines

View publications per year as a table
Michiaki Koga: publications per year, 1980 to 2025
Year Publications
1980 1
1981 0
1982 0
1983 0
1984 0
1985 1
1986 0
1987 3
1988 0
1989 0
1990 0
1991 2
1992 2
1993 4
1994 3
1995 7
1996 2
1997 4
1998 8
1999 16
2000 8
2001 12
2002 14
2003 11
2004 13
2005 8
2006 9
2007 11
2008 7
2009 5
2010 2
2011 5
2012 9
2013 9
2014 7
2015 18
2016 2
2017 11
2018 6
2019 3
2020 6
2021 11
2022 7
2023 6
2024 5
2025 7
Total 265
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Michiaki Koga publication distribution in Microbiology in 2026

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

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 165–174 publications, is where this scientist sits. 55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55–64 publications 679+

This scientist: 171 publications — 36th percentile

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

The last bar groups every scientist with 679 publications or more.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253 171
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
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Michiaki Koga D-index placement in Microbiology in 2026

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

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 51 D-Index, is where this scientist sits. 40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 51 D-Index — 23rd percentile

23% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111 51
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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Overview

Michiaki Koga is affiliated with Yamaguchi University in Japan and has published extensively in the field of Medicine, with a focus on Neurology. Their research spans multiple subfields including Cellular and Molecular Neuroscience, Physiology, Epidemiology, and Pulmonary and Respiratory Medicine.

Their primary research topics include:

  • Peripheral Neuropathies and Disorders
  • Hereditary Neurological Disorders
  • Sarcoidosis and Beryllium Toxicity Research
  • Inflammatory Myopathies and Dermatomyositis
  • Vasculitis and related conditions
  • Myasthenia Gravis and Thymoma
  • Nerve injury and regeneration

Michiaki Koga has contributed to various scholarly articles over recent years. Notable papers include:

  • "Efficacy and Safety of Rituximab in Refractory CIDP With or Without IgG4 Autoantibodies (RECIPE): Protocol for a Double-Blind, Randomized, Placebo-Controlled Clinical Trial", 2020, published in JMIR Research Protocols
  • "Jo-1 Antibodies From Myositis Induce Complement-Dependent Cytotoxicity and TREM-1 Upregulation in Muscle Endothelial Cells", 2023, Neurology Neuroimmunology & Neuroinflammation
  • "Exploring lipophilic compounds that induce BDNF secretion in astrocytes beyond the BBB using a new multi-cultured human in vitro BBB model", 2021, Journal of Neuroimmunology
  • "Sensory Ataxic Guillain-Barré Syndrome with Dysgeusia after mRNA COVID-19 Vaccination", 2022, Internal Medicine
  • "Autocrine TNF-α Increases Penetration of Myelin-Associated Glycoprotein Antibodies Across the Blood-Nerve Barrier in Anti-MAG Neuropathy", 2023, Neurology Neuroimmunology & Neuroinflammation

Frequent co-authors collaborating with Michiaki Koga include:

  • Fumitaka Shimizu
  • Takashi Kanda
  • Yukio Takeshita
  • Toshihiko Maeda

Regarding publication venues, Michiaki Koga often publishes in:

  • PubMed
  • Rinsho Shinkeigaku
  • Clinical and Experimental Neuroimmunology
  • Neurology Neuroimmunology & Neuroinflammation
  • Internal Medicine

Best Publications

  • Safety and efficacy of eculizumab in anti-acetylcholine receptor antibody-positive refractory generalised myasthenia gravis (REGAIN): a phase 3, randomised, double-blind, placebo-controlled, multicentre study

    James F Howard;Kimiaki Utsugisawa;Michael Benatar;Hiroyuki Murai

  • Carbohydrate mimicry between human ganglioside GM1 and Campylobacter jejuni lipooligosaccharide causes Guillain-Barre syndrome.

    Nobuhiro Yuki;Keiichiro Susuki;Michiaki Koga;Yukihiro Nishimoto

  • Bickerstaff's brainstem encephalitis: clinical features of 62 cases and a subgroup associated with Guillain-Barré syndrome.

    Masaaki Odaka;Nobuhiro Yuki;Mitsunori Yamada;Michiaki Koga

  • Anti-gp210 and anti-centromere antibodies are different risk factors for the progression of primary biliary cirrhosis

    Minoru Nakamura;Hisayoshi Kondo;Tsuyoshi Mori;Atsumasa Komori

  • Axonal Guillain‐Barré syndrome: Relation to anti‐ganglioside antibodies and Campylobacter jejuni infection in Japan

    Kazue Ogawara;Satoshi Kuwabara;Masahiro Mori;Takamichi Hattori

  • Bickerstaff's brainstem encephalitis and Fisher syndrome form a continuous spectrum: clinical analysis of 581 cases.

    Masafumi Ito;Satoshi Kuwabara;Masaaki Odaka;Sonoko Misawa

  • Animal model of axonal Guillain-Barré syndrome induced by sensitization with GM1 ganglioside.

    Nobuhiro Yuki;Mitsunori Yamada;Michiaki Koga;Masaaki Odaka

  • IgG Anti‐GM1 antibody is associated with reversible conduction failure and axonal degeneration in guillain‐barré syndrome

    Satoshi Kuwabara;Nobuhiro Yuki;Michiaki Koga;Takamichi Hattori

  • Genome-wide association study identifies TNFSF15 and POU2AF1 as susceptibility loci for primary biliary cirrhosis in the Japanese population.

    Minoru Nakamura;Nao Nishida;Minae Kawashima;Yoshihiro Aiba

  • Antecedent infections in Fisher syndrome A common pathogenesis of molecular mimicry

    M. Koga;M. Gilbert;J. Li;S. Koike

  • Continuous Spectrum of Pharyngeal-Cervical-Brachial Variant of Guillain-Barré Syndrome

    Takahide Nagashima;Michiaki Koga;Masaaki Odaka;Koichi Hirata

  • Epidemiology of Campylobacter jejuni Isolated from Patients with Guillain-Barré and Fisher Syndromes in Japan

    Masaki Takahashi;Michiaki Koga;Keiko Yokoyama;Nobuhiro Yuki

  • Antibody titer to gp210-C terminal peptide as a clinical parameter for monitoring primary biliary cirrhosis

    Minoru Nakamura;Yuki Shimizu-Yoshida;Yasushi Takii;Atsumasa Komori

  • Comprehensive Analysis of Bacterial Risk Factors for the Development of Guillain-Barré Syndrome after Campylobacter jejuni Enteritis

    Michiaki Koga;Michel Gilbert;Masaki Takahashi;Jianjun Li

  • Clinical features and response to treatment in Guillain-Barré syndrome associated with antibodies to GM1b ganglioside.

    Nobuhiro Yuki;C. Wim Ang;Michiaki Koga;Bart C. Jacobs

  • Patterns and serial changes in electrodiagnostic abnormalities of axonal Guillain–Barré syndrome

    A. Hiraga;S. Kuwabara;K. Ogawara;S. Misawa

  • Campylobacter gene polymorphism as a determinant of clinical features of Guillain-Barre syndrome

    M. Koga;M. Takahashi;M. Masuda;K. Hirata

  • Hyperreflexia in Guillain-Barré syndrome: relation with acute motor axonal neuropathy and anti-GM1 antibody

    Satoshi Kuwabara;Kazue Ogawara;Michiaki Koga;Masahiro Mori

  • Close association of IgA anti-ganglioside antibodies with antecedent Campylobacter jejuni infection in Guillain–Barré and Fisher's syndromes

    Michiaki Koga;Michiaki Koga;Nobuhiro Yuki;Masaki Takahashi;Kahiko Saito

  • Anti-GT1a IgG in Guillain-Barré syndrome

    M Koga;H Yoshino;M Morimatsu;N Yuki

Frequent Co-Authors

Nobuhiro Yuki
Nobuhiro Yuki National University of Singapore
Satoshi Kuwabara
Satoshi Kuwabara Chiba University
Koichi Hirata
Koichi Hirata Sapporo Medical University
Takamichi Hattori
Takamichi Hattori Chiba University
Michel Gilbert
Michel Gilbert National Academies of Sciences, Engineering, and Medicine
Jianjun Li
Jianjun Li Chinese Academy of Sciences
Bart C. Jacobs
Bart C. Jacobs Erasmus University Rotterdam
Shigeru Kohno
Shigeru Kohno Nagasaki University
Susumu Kusunoki
Susumu Kusunoki Kindai University
Hubert P. Endtz
Hubert P. Endtz Erasmus University Rotterdam

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