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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 53 12995 11687 979 892 285 11113

Shigeru Ohta publications per year

The chart shows the history of publications by Shigeru Ohta between 1979 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Shigeru Ohta published across 47 years, from 1979 to 2025, averaging 7.1 papers a year. Output peaked at 16 publications in 2000. 1 of the 334 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1979 to 2025. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2000. 1979: 1 publication 1980: 0 publications 1981: 0 publications 1982: 1 publication 1983: 1 publication 1984: 0 publications 1985: 1 publication 1986: 6 publications 1987: 6 publications 1988: 4 publications 1989: 9 publications 1990: 11 publications 1991: 8 publications 1992: 7 publications 1993: 6 publications 1994: 4 publications 1995: 3 publications 1996: 4 publications 1997: 7 publications 1998: 10 publications 1999: 15 publications 2000: 16 publications 2001: 9 publications 2002: 12 publications 2003: 13 publications 2004: 9 publications 2005: 16 publications 2006: 13 publications 2007: 14 publications 2008: 11 publications 2009: 10 publications 2010: 13 publications 2011: 5 publications 2012: 16 publications 2013: 13 publications 2014: 7 publications 2015: 6 publications 2016: 8 publications 2017: 16 publications 2018: 5 publications 2019: 7 publications 2020: 2 publications 2021: 3 publications 2022: 3 publications 2023: 2 publications 2024: 0 publications 2025: 1 publication
1979 2025

334 publications in total across all disciplines

View publications per year as a table
Shigeru Ohta: publications per year, 1979 to 2025
Year Publications
1979 1
1980 0
1981 0
1982 1
1983 1
1984 0
1985 1
1986 6
1987 6
1988 4
1989 9
1990 11
1991 8
1992 7
1993 6
1994 4
1995 3
1996 4
1997 7
1998 10
1999 15
2000 16
2001 9
2002 12
2003 13
2004 9
2005 16
2006 13
2007 14
2008 11
2009 10
2010 13
2011 5
2012 16
2013 13
2014 7
2015 6
2016 8
2017 16
2018 5
2019 7
2020 2
2021 3
2022 3
2023 2
2024 0
2025 1
Total 334
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Shigeru Ohta publication distribution in Chemistry in 2026

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

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 281–300 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 285 publications — 59th percentile

59% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939 285
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Shigeru Ohta D-index placement in Chemistry in 2026

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

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 52–53 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 53 D-Index — 28th percentile

28% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872 53
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Shigeru Ohta is affiliated with Hiroshima University in Japan and contributes to research primarily in the fields of Agricultural and Biological Sciences, Biochemistry, Genetics and Molecular Biology, and Materials Science. Their work spans a variety of subfields including Materials Chemistry, Plant Science, Ecology, Evolution, Behavior and Systematics, Pharmacology, and Genetics.

The main topics covered in Ohta's research include plant and animal studies, crystallization and solubility studies, X-ray diffraction in crystallography, insect and arachnid ecology and behavior, marine sponges and natural products, insect-plant interactions and control, and essential oils and antimicrobial activity.

Scientific output includes publications in prominent venues with multiple appearances in The Cambridge Structural Database, Journal of Chemical Ecology, Chemistry & Biodiversity, Journal of Natural Products, and Phytochemistry. The number of publications in these journals reflects a focus on chemical ecology, natural products, and crystallography.

Frequent coauthors provide insight into Ohta's collaborative network. These include Hisashi Ômura, Mylene M. Uy, Emi Ohta, Tatsuo Nehira, and Yasuhiro Ishihara, indicating ongoing partnerships in related scientific areas.

Selected recent papers by Ohta or within related collaborations include:

  • Asaroidoxazines from the Roots of Asarum asaroides Induce Apoptosis in Human Neuroblastoma Cells, 2020, Journal of Natural Products
  • The male swallowtail butterfly, Papilio polytes, uses cuticular hydrocarbons for mate discrimination, 2020, Animal Behaviour
  • Oxygenated Cembrene Diterpenes from Sarcophyton convolutum: Cytotoxic Sarcoconvolutum A-E, 2021, Marine Drugs
  • Paralemnolins X and Y, New Antimicrobial Sesquiterpenoids from the Soft Coral Paralemnalia thyrsoide, 2021, Antibiotics
  • Carotane sesquiterpenes from Ferula vesceritensis: in silico analysis as SARS-CoV-2 binding inhibitors, 2020, RSC Advances

Best Publications

  • Comparative study of the endocrine-disrupting activity of bisphenol A and 19 related compounds.

    Shigeyuki Kitamura;Tomoharu Suzuki;Seigo Sanoh;Ryuki Kohta

  • Estrogenic and antiandrogenic activities of 17 benzophenone derivatives used as UV stabilizers and sunscreens.

    Tomoharu Suzuki;Shigeyuki Kitamura;Ryuki Khota;Kazumi Sugihara

  • Thyroid hormonal activity of the flame retardants tetrabromobisphenol A and tetrachlorobisphenol A

    Shigeyuki Kitamura;Norimasa Jinno;Shigeru Ohta;Hiroaki Kuroki

  • Anti-thyroid hormonal activity of tetrabromobisphenol A, a flame retardant, and related compounds: Affinity to the mammalian thyroid hormone receptor, and effect on tadpole metamorphosis

    Shigeyuki Kitamura;Teruhisa Kato;Mitsuru Iida;Norimasa Jinno

  • Drug-Metabolizing Ability of Molybdenum Hydroxylases

    Shigeyuki Kitamura;Kazumi Sugihara;Shigeru Ohta

  • New series of antiprion compounds: pyrazolone derivatives have the potent activity of inhibiting protease-resistant prion protein accumulation.

    Ayako Kimata;Hidehiko Nakagawa;Ryo Ohyama;Tomoko Fukuuchi

  • Potent Estrogenic Metabolites of Bisphenol A and Bisphenol B Formed by Rat Liver S9 Fraction: Their Structures and Estrogenic Potency

    Shin'ichi Yoshihara;Tohru Mizutare;Misako Makishima;Noriko Suzuki

  • 1-Benzyl-1,2,3,4-tetrahydroisoquinoline as a parkinsonism-inducing agent: a novel endogenous amine in mouse brain and parkinsonian CSF.

    Yaichiro Kotake;Yoshikazu Tasaki;Yukiko Makino;Shigeru Ohta

  • TETRAHYDROISOQUINOLINE AND 1-METHYL-TETRAHYDROISOQUINOLINE ARE PRESENT IN THE HUMAN BRAIN: RELATION TO PARKINSON’S DISEASE

    Shigeru Ohta;Michihiro Kohno;Yukiko Makino;Osamu Tachikawa

  • Metabolic activation of bisphenol A by rat liver S9 fraction.

    Shin'ichi Yoshihara;Misako Makishima;Noriko Suzuki;Shigeru Ohta

  • Tetrahydroisoquinoline and 1-methyl-tetrahydroisoquinoline as novel endogenous amines in rat brain

    Michihiro Kohno;Shigeru Ohta;Masaaki Hirobe

  • Thyroid hormone-like and estrogenic activity of hydroxylated PCBs in cell culture.

    Shigeyuki Kitamura;Norimasa Jinno;Tomoharu Suzuki;Kazumi Sugihara

  • Presence of tetrahydroisoquinoline and 1-methyl-tetrahydro-isoquinoline in foods: compounds related to Parkinson's disease.

    Yukiko Makino;Shigeru Ohta;Osamu Tachikawa;Masaaki Hirobe

  • Comparison of drug metabolism and its related hepatotoxic effects in HepaRG, cryopreserved human hepatocytes, and HepG2 cell cultures

    Yuichi Yokoyama;Yuichi Yokoyama;Yoshifumi Sasaki;Natsuko Terasaki;Taku Kawataki

  • Design, synthesis, and pharmacological activity of nonallergenic pyrazolone-type antipyretic analgesics.

    Naoto Uramaru;Hidenari Shigematsu;Akihisa Toda;Reiko Eyanagi

  • 1‐Methyl‐ 1,2,3,4‐Tetrahydroisoquinoline, Decreasing in 1‐Methyl‐4‐Phenyl‐1,2,3,6‐Tetrahydropyridine‐Treated Mouse, Prevents Parkinsonism‐Like Behavior Abnormalities

    Yoshikazu Tasaki;Yukiko Makino;Shigeru Ohta;Masaaki Hirobe

  • Metabolism of UV-filter benzophenone-3 by rat and human liver microsomes and its effect on endocrine-disrupting activity.

    Yoko Watanabe;Yoko Watanabe;Hiroyuki Kojima;Shinji Takeuchi;Naoto Uramaru

  • Reductive metabolism of p,p'-DDT and o,p'-DDT by rat liver cytochrome P450.

    Shigeyuki Kitamura;Yuri Shimizu;Yuko Shiraga;Mayumi Yoshida

  • Selective dopaminergic neurotoxicity of isoquinoline derivatives related to Parkinson’s disease: studies using heterologous expression systems of the dopamine transporter

    Alexander Storch;Stefanie Ott;Yu I Hwang;Rainer Ortmann

  • Quinoline Derivatives Are Therapeutic Candidates for Transmissible Spongiform Encephalopathies

    Ikuko Murakami-Kubo;Katsumi Doh-Ura;Kensuke Ishikawa;Satoshi Kawatake

  • Glidobactins A, B and C, new antitumor antibiotics. I. Production, isolation, chemical properties and biological activity.

    Masahisa Oka;Yuji Nishiyama;Shinichi Ohta;Hideo Kamei

  • Different action on dopamine catabolic pathways of two endogenous 1,2,3,4-tetrahydroisoquinolines with similar antidopaminergic properties.

    Lucyna Antkiewicz-Michaluk;Jerzy Michaluk;Maria Mokrosz;Irena Romanska

Frequent Co-Authors

Yoshiaki Fujii-Kuriyama
Yoshiaki Fujii-Kuriyama Tokyo Medical and Dental University
Kazuya Kikuchi
Kazuya Kikuchi Osaka University
Takayoshi Suzuki
Takayoshi Suzuki Osaka University
Yuichi Hashimoto
Yuichi Hashimoto University of Tokyo
Mineko Terao
Mineko Terao Mario Negri Institute for Pharmacological Research
Katsutoshi Yoshizato
Katsutoshi Yoshizato Osaka Metropolitan University
Enrico Garattini
Enrico Garattini Mario Negri Institute for Pharmacological Research
Ichiro Kanazawa
Ichiro Kanazawa University of Tokyo
Shuhei Yamaguchi
Shuhei Yamaguchi Shimane University
Makoto Naoi
Makoto Naoi Nagoya Institute of Technology

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