World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Immunology 59 3422 3153 11 11 248 13032

Naoki Yamamoto publications per year

The chart shows the history of publications by Naoki Yamamoto between 1976 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Naoki Yamamoto published across 50 years, from 1976 to 2025, averaging 7.2 papers a year. Output peaked at 30 publications in 1989. 18 of the 360 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1976 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 1989. 1976: 3 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 1 publication 1983: 1 publication 1984: 4 publications 1985: 11 publications 1986: 15 publications 1987: 25 publications 1988: 19 publications 1989: 30 publications 1990: 15 publications 1991: 10 publications 1992: 3 publications 1993: 3 publications 1994: 3 publications 1995: 1 publication 1996: 3 publications 1997: 1 publication 1998: 3 publications 1999: 8 publications 2000: 7 publications 2001: 6 publications 2002: 5 publications 2003: 3 publications 2004: 6 publications 2005: 6 publications 2006: 5 publications 2007: 7 publications 2008: 5 publications 2009: 4 publications 2010: 9 publications 2011: 8 publications 2012: 10 publications 2013: 11 publications 2014: 10 publications 2015: 8 publications 2016: 11 publications 2017: 6 publications 2018: 8 publications 2019: 5 publications 2020: 9 publications 2021: 4 publications 2022: 17 publications 2023: 13 publications 2024: 11 publications 2025: 7 publications
1976 2025

360 publications in total across all disciplines

View publications per year as a table
Naoki Yamamoto: publications per year, 1976 to 2025
Year Publications
1976 3
1977 0
1978 0
1979 0
1980 0
1981 0
1982 1
1983 1
1984 4
1985 11
1986 15
1987 25
1988 19
1989 30
1990 15
1991 10
1992 3
1993 3
1994 3
1995 1
1996 3
1997 1
1998 3
1999 8
2000 7
2001 6
2002 5
2003 3
2004 6
2005 6
2006 5
2007 7
2008 5
2009 4
2010 9
2011 8
2012 10
2013 11
2014 10
2015 8
2016 11
2017 6
2018 8
2019 5
2020 9
2021 4
2022 17
2023 13
2024 11
2025 7
Total 360
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Naoki Yamamoto publications per year - data summary

  • Naoki Yamamoto, a Immunology scholar from National University of Singapore, has 360 publications recorded across 50 years, from 1976 to 2025.
  • The oldest publication on record dates to 1976 and the most recent to 2025.
  • The most productive year is 1989, with 30 publications.
  • The least productive years with any output are 1982, 1983, 1995 and 1997, with 1 publication each.
  • 5 of the 50 years in the span carry no publications at all (1977, 1978, 1979, 1980 and others).
  • The rate of publication averages 7.2 papers per year over the whole span, or 8.0 per year counting only the 45 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 52 publications, 14% of the career total.
  • Split into equal eras - 1976-1992: 137 publications (8.1 per year); 1993-2009: 76 publications (4.5 per year); 2010-2025: 147 publications (9.2 per year).
  • Comparing the opening and closing eras, the overall trend of publication is broadly steady.

Naoki Yamamoto publication distribution in Immunology in 2026

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

No. of scientists
50 100 150
Bar chart with 76 bars. Horizontal axis: publications, 62–71 to 807+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 152–161 publications. The last bar groups every scientist with 807 publications or more. The highlighted bar, 242–251 publications, is where this scientist sits. 62–71 publications: 9 scientists 72–81 publications: 23 scientists 82–91 publications: 40 scientists 92–101 publications: 72 scientists 102–111 publications: 86 scientists 112–121 publications: 108 scientists 122–131 publications: 150 scientists 132–141 publications: 160 scientists 142–151 publications: 159 scientists 152–161 publications: 189 scientists 162–171 publications: 166 scientists 172–181 publications: 181 scientists 182–191 publications: 188 scientists 192–201 publications: 187 scientists 202–211 publications: 178 scientists 212–221 publications: 158 scientists 222–231 publications: 168 scientists 232–241 publications: 159 scientists 242–251 publications: 160 scientists 252–261 publications: 148 scientists 262–271 publications: 116 scientists 272–281 publications: 125 scientists 282–291 publications: 115 scientists 292–301 publications: 111 scientists 302–311 publications: 95 scientists 312–321 publications: 97 scientists 322–331 publications: 97 scientists 332–341 publications: 99 scientists 342–351 publications: 96 scientists 352–361 publications: 69 scientists 362–371 publications: 76 scientists 372–381 publications: 71 scientists 382–391 publications: 71 scientists 392–401 publications: 62 scientists 402–411 publications: 54 scientists 412–421 publications: 41 scientists 422–431 publications: 63 scientists 432–441 publications: 53 scientists 442–451 publications: 31 scientists 452–461 publications: 42 scientists 462–471 publications: 40 scientists 472–481 publications: 29 scientists 482–491 publications: 34 scientists 492–501 publications: 30 scientists 502–511 publications: 23 scientists 512–521 publications: 41 scientists 522–531 publications: 29 scientists 532–541 publications: 28 scientists 542–551 publications: 16 scientists 552–561 publications: 18 scientists 562–571 publications: 18 scientists 572–581 publications: 17 scientists 582–591 publications: 17 scientists 592–601 publications: 17 scientists 602–611 publications: 19 scientists 612–621 publications: 13 scientists 622–631 publications: 12 scientists 632–641 publications: 11 scientists 642–651 publications: 16 scientists 652–661 publications: 9 scientists 662–671 publications: 5 scientists 672–681 publications: 13 scientists 682–691 publications: 12 scientists 692–701 publications: 6 scientists 702–711 publications: 6 scientists 712–721 publications: 9 scientists 722–731 publications: 9 scientists 732–741 publications: 6 scientists 742–751 publications: 11 scientists 752–761 publications: 10 scientists 762–771 publications: 7 scientists 772–781 publications: 12 scientists 782–791 publications: 7 scientists 792–801 publications: 5 scientists 802–806 publications: 1 scientist 807+ publications: 100 scientists
62–71 publications 807+

This scientist: 248 publications — 50th percentile

50% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 807 publications or more.

View publications distribution as a table
Number of Immunology scientists by publication count, Research.com 2026 ranking edition. Based on 4,929 ranked scientists.
Publications Scientists This scientist
62–71 9
72–81 23
82–91 40
92–101 72
102–111 86
112–121 108
122–131 150
132–141 160
142–151 159
152–161 189
162–171 166
172–181 181
182–191 188
192–201 187
202–211 178
212–221 158
222–231 168
232–241 159
242–251 160 248
252–261 148
262–271 116
272–281 125
282–291 115
292–301 111
302–311 95
312–321 97
322–331 97
332–341 99
342–351 96
352–361 69
362–371 76
372–381 71
382–391 71
392–401 62
402–411 54
412–421 41
422–431 63
432–441 53
442–451 31
452–461 42
462–471 40
472–481 29
482–491 34
492–501 30
502–511 23
512–521 41
522–531 29
532–541 28
542–551 16
552–561 18
562–571 18
572–581 17
582–591 17
592–601 17
602–611 19
612–621 13
622–631 12
632–641 11
642–651 16
652–661 9
662–671 5
672–681 13
682–691 12
692–701 6
702–711 6
712–721 9
722–731 9
732–741 6
742–751 11
752–761 10
762–771 7
772–781 12
782–791 7
792–801 5
802–806 1
807+ 100
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Naoki Yamamoto publication distribution in Immunology in 2026 - data summary

  • The chart plots the publication count of all 4,929 Immunology scientists ranked by Research.com in 2026, grouped into 76 ranges running from 62–71 to 807+ publications.
  • Naoki Yamamoto, a Immunology scholar from National University of Singapore, records 248 publications - the 50th percentile of the discipline.
  • 50% of ranked Immunology scientists score the same or lower than Naoki Yamamoto, and about 50% score higher.
  • The median of the discipline falls in the 242–251 publications range, and Naoki Yamamoto falls inside that same range.
  • The most crowded range is 152–161 publications, holding 189 scientists (4% of the field).
  • 52% of the field sits in the lowest quarter of the value range (up to 242–251 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 807 publications or more, 100 scientists in all (2% of the field).

Naoki Yamamoto D-index placement in Immunology in 2026

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

No. of scientists
50 100 150 200
Bar chart with 60 bars. Horizontal axis: D-Index, 40–41 to 157+. Vertical axis: number of scientists, 0 to 201. Most scientists, 201, have 58–59 D-Index. The last bar groups every scientist with 157 D-Index or more. The highlighted bar, 58–59 D-Index, is where this scientist sits. 40–41 D-Index: 28 scientists 42–43 D-Index: 91 scientists 44–45 D-Index: 157 scientists 46–47 D-Index: 192 scientists 48–49 D-Index: 175 scientists 50–51 D-Index: 188 scientists 52–53 D-Index: 177 scientists 54–55 D-Index: 155 scientists 56–57 D-Index: 194 scientists 58–59 D-Index: 201 scientists 60–61 D-Index: 197 scientists 62–63 D-Index: 201 scientists 64–65 D-Index: 173 scientists 66–67 D-Index: 167 scientists 68–69 D-Index: 172 scientists 70–71 D-Index: 199 scientists 72–73 D-Index: 184 scientists 74–75 D-Index: 133 scientists 76–77 D-Index: 163 scientists 78–79 D-Index: 127 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 125 scientists 84–85 D-Index: 121 scientists 86–87 D-Index: 102 scientists 88–89 D-Index: 96 scientists 90–91 D-Index: 75 scientists 92–93 D-Index: 72 scientists 94–95 D-Index: 74 scientists 96–97 D-Index: 66 scientists 98–99 D-Index: 68 scientists 100–101 D-Index: 49 scientists 102–103 D-Index: 60 scientists 104–105 D-Index: 54 scientists 106–107 D-Index: 36 scientists 108–109 D-Index: 23 scientists 110–111 D-Index: 52 scientists 112–113 D-Index: 41 scientists 114–115 D-Index: 34 scientists 116–117 D-Index: 25 scientists 118–119 D-Index: 28 scientists 120–121 D-Index: 11 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 27 scientists 126–127 D-Index: 19 scientists 128–129 D-Index: 20 scientists 130–131 D-Index: 16 scientists 132–133 D-Index: 17 scientists 134–135 D-Index: 14 scientists 136–137 D-Index: 15 scientists 138–139 D-Index: 9 scientists 140–141 D-Index: 11 scientists 142–143 D-Index: 9 scientists 144–145 D-Index: 9 scientists 146–147 D-Index: 7 scientists 148–149 D-Index: 7 scientists 150–151 D-Index: 7 scientists 152–153 D-Index: 5 scientists 154–155 D-Index: 8 scientists 156 D-Index: 6 scientists 157+ D-Index: 96 scientists
40–41 D-Index 157+

This scientist: 59 D-Index — 32nd percentile

32% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 157 D-Index or more.

View D-Index distribution as a table
Number of Immunology scientists by D-index, Research.com 2026 ranking edition. Based on 4,929 ranked scientists.
D-Index Scientists This scientist
40–41 28
42–43 91
44–45 157
46–47 192
48–49 175
50–51 188
52–53 177
54–55 155
56–57 194
58–59 201 59
60–61 197
62–63 201
64–65 173
66–67 167
68–69 172
70–71 199
72–73 184
74–75 133
76–77 163
78–79 127
80–81 121
82–83 125
84–85 121
86–87 102
88–89 96
90–91 75
92–93 72
94–95 74
96–97 66
98–99 68
100–101 49
102–103 60
104–105 54
106–107 36
108–109 23
110–111 52
112–113 41
114–115 34
116–117 25
118–119 28
120–121 11
122–123 20
124–125 27
126–127 19
128–129 20
130–131 16
132–133 17
134–135 14
136–137 15
138–139 9
140–141 11
142–143 9
144–145 9
146–147 7
148–149 7
150–151 7
152–153 5
154–155 8
156 6
157+ 96
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Naoki Yamamoto D-index placement in Immunology in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 4,929 Immunology scientists ranked by Research.com in 2026, grouped into 60 ranges running from 40–41 to 157+ D-Index.
  • Naoki Yamamoto, a Immunology scholar from National University of Singapore, records 59 D-Index - the 32nd percentile of the discipline.
  • 32% of ranked Immunology scientists score the same or lower than Naoki Yamamoto, and about 68% score higher.
  • The median of the discipline falls in the 68–69 D-Index range, and Naoki Yamamoto ranks below the median.
  • The most crowded range is 58–59 D-Index, holding 201 scientists (4% of the field).
  • 50% of the field sits in the lowest quarter of the value range (up to 68–69 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 157 D-Index or more, 96 scientists in all (2% of the field).

Overview

Naoki Yamamoto is affiliated with the National University of Singapore in Singapore and has a research focus primarily in the field of Medicine. Their work spans several subfields, including Infectious Diseases, Epidemiology, Genetics, Surgery, and Molecular Biology.

The scientist has contributed to research on various topics, notably SARS-CoV-2 and COVID-19, with 20 publications related to the virus and disease. Additional main topics include COVID-19 Clinical Research Studies, Liver Disease Diagnosis and Treatment, Respiratory Viral Infections Research, Venous Thromboembolism Diagnosis and Management, Acute Ischemic Stroke Management, and Cancer, Hypoxia, and Metabolism.

Naoki Yamamoto has published in multiple scientific venues, with frequent contributions to:

  • arXiv (Cornell University)
  • Cureus
  • Scientific Reports
  • Biochemical and Biophysical Research Communications
  • Bioorganic & Medicinal Chemistry

Among recent papers by the researcher, notable publications include:

  • "Nelfinavir inhibits replication of severe acute respiratory syndrome coronavirus 2 in vitro" (2020, bioRxiv (Cold Spring Harbor Laboratory))
  • "SARS-CoV-2 infections and COVID-19 mortalities strongly correlate with ACE1 I/D genotype" (2020, Gene)
  • "VEGF and bFGF induction by nitric oxide is associated with hyperbaric oxygen-induced angiogenesis and muscle regeneration" (2020, Scientific Reports)
  • "Apparent difference in fatalities between Central Europe and East Asia due to SARS-COV-2 and COVID-19: Four hypotheses for possible explanation" (2020, Medical Hypotheses)
  • "Angiotensin-Converting Enzyme (ACE) 1 Gene Polymorphism and Phenotypic Expression of COVID-19 Symptoms" (2021, Genes)

Frequent collaborators of Naoki Yamamoto include Hajime Ikenouchi, Kunitada Shimotohno, Masashi Mizokami, Shin Urai, and Genzo Iguchi, with coauthorship counts ranging from five to seven papers.

Best Publications

  • Infection of HTLV-III/LAV in HTLV-I-carrying cells MT-2 and MT-4 and application in a plaque assay

    Shinji Harada;Yoshio Koyanagi;Naoki Yamamoto

  • Transplantation of bone marrow cells reduces CCl4-induced liver fibrosis in mice.

    Isao Sakaida;Shuji Terai;Naoki Yamamoto;Koji Aoyama

  • Constitutive Activation of NF-κB in Primary Adult T-Cell Leukemia Cells

    Naoki Mori;Masahiro Fujii;Shuichi Ikeda;Yasuaki Yamada

  • Bay 11-7082 inhibits transcription factor NF-κB and induces apoptosis of HTLV-I–infected T-cell lines and primary adult T-cell leukemia cells

    Naoki Mori;Yasuaki Yamada;Shuichi Ikeda;Yoshihiro Yamasaki

  • Differential susceptibility to the acquired immunodeficiency syndrome retrovirus in cloned cells of human leukemic T-cell line Molt-4.

    R Kikukawa;Y Koyanagi;S Harada;N Kobayashi

  • Spontaneous proliferation of peripheral blood lymphocytes increased in patients with HTLV-I-associated myelopathy.

    Y. Itoyama;S. Minato;Jun-Ichi Kira;I. Goto

  • Inhibitory effect of 2',3'-didehydro-2',3'-dideoxynucleosides on infectivity, cytopathic effects, and replication of human immunodeficiency virus.

    Y Hamamoto;H Nakashima;T Matsui;A Matsuda

  • Inhibitory effect of glycyrrhizin on the in vitro infectivity and cytopathic activity of the human immunodeficiency virus [HIV (HTLV-III/LAV)]

    M Ito;H Nakashima;M Baba;R Pauwels

  • Mechanism of inhibitory effect of glycyrrhizin on replication of human immunodeficiency virus (HIV).

    Masahiko Ito;Akihiko Sato;Kazuhiro Hirabayashi;Fuminori Tanabe

  • Purification and characterization of an avian myeloblastosis and human immunodeficiency virus reverse transcriptase inhibitor, sulfated polysaccharides extracted from sea algae.

    H Nakashima;Y Kido;N Kobayashi;Y Motoki

  • Induction of Bcl-x(L) expression by human T-cell leukemia virus type 1 Tax through NF-kappaB in apoptosis-resistant T-cell transfectants with Tax.

    Tomonori Tsukahara;Mari Kannagi;Takashi Ohashi;Hirotomo Kato

  • Differentiation and Enrichment of Hepatocyte‐Like Cells from Human Embryonic Stem Cells In Vitro and In Vivo

    Yuyou Duan;Andreea Catana;Ying Meng;Naoki Yamamoto

  • An in vivo model for monitoring trans-differentiation of bone marrow cells into functional hepatocytes

    Shuji Terai;Isao Sakaida;Naoki Yamamoto;Kaoru Omori

  • Differentiation of human and mouse embryonic stem cells along a hepatocyte lineage.

    Hitoshi Shirahashi;Jian Wu;Naoki Yamamoto;Andreea Catana

  • Inhibition of human immunodeficiency virus (HIV-1) replication by synthetic oligo-RNA derivatives

    Susumu Shibahara;Sachiko Mukai;Hirokazu Morisawa;Hideki Nakashima

  • Increased HTLV-I proviral DNA in HTLV-I-associated myelopathy: a quantitative polymerase chain reaction study.

    Jun‐ichi ‐i Kira;Yoshio Koyanagi;Takeshi Yamada;Yasuto Itoyama

  • Tumor promoter, TPA, enhances replication of HTLV-III/LAV.

    Shinji Harada;Yoshio Koyanagi;Hideki Nakashima;Nobuyuki Kobayashi

  • Augmentation of Human Immunodeficiency Virus Type 1 Gene Expression by Tumor Necrosis Factor α

    Takashi Okamoto;Toshifumi Matsuyama;Shigehisa Mori;Yoshiaki Hamamoto

  • Mechanism of the Inhibitory Effect of Curdlan Sulfate on HIV-1 Infection in Vitro

    Paul P. Jagodzinski;Richard Wiaderkiewicz;Grzegorz Kurzawski;Marek Kloczewiak

  • Constitutive activation of transcription factor AP-1 in primary adult T-cell leukemia cells.

    Naoki Mori;Masahiro Fujii;Kousuke Iwai;Shuichi Ikeda

Frequent Co-Authors

Yoshio Koyanagi
Yoshio Koyanagi Kyoto University
Hiroshi Nishina
Hiroshi Nishina Tokyo Medical and Dental University
Naoki Mori
Naoki Mori University of the Ryukyus
Yorio Hinuma
Yorio Hinuma Kyoto University
Kiwamu Okita
Kiwamu Okita Yamaguchi University
Jun-ichi Kira
Jun-ichi Kira Kyushu University
Yuetsu Tanaka
Yuetsu Tanaka University of the Ryukyus
Mari Kannagi
Mari Kannagi Tokyo Medical and Dental University
Hirokazu Tamamura
Hirokazu Tamamura Tokyo Medical and Dental University
Kunitada Shimotohno
Kunitada Shimotohno National Center For Global Health and Medicine

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