World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
70
Citations
12617
World Ranking
6054
National Ranking
382

Johji Yamahara 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 Johji Yamahara sits on this spectrum.

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 publications 1,295+

This scientist: 261 publications — 53rd percentile

53% of scientists in this discipline score the same or lower.

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

Johji Yamahara 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 Johji Yamahara sits on this spectrum.

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 D-Index 159+

This scientist: 70 D-Index — 68th percentile

68% of scientists in this discipline score the same or lower.

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

Overview

Johji Yamahara is affiliated with Kyoto Pharmaceutical University in Japan. Their research primarily focuses on the interconnected areas of medicine, biochemistry, genetics, and molecular biology. Within these broader fields, they have contributed notably to subfields such as molecular biology, epidemiology, endocrinology, diabetes and metabolism, biochemistry, and pharmacology.

Their work covers a range of topics including:

  • Diet, metabolism, and disease
  • Liver disease diagnosis and treatment
  • Metabolism, diabetes, and cancer
  • Medicinal plants and bioactive compounds
  • Natural product bioactivities and synthesis
  • Antioxidant activity and oxidative stress
  • Retinoids in leukemia and cellular processes

Yamahara has published several papers addressing these themes. Selected recent publications include:

  • Apple pomace and rosemary extract ameliorates hepatic steatosis in fructose-fed rats: Association with enhancing fatty acid oxidation and suppressing inflammation, 2020, Experimental and Therapeutic Medicine
  • Rhodiola crenulata root extract ameliorates fructose-induced hepatic steatosis in rats: Association with activating autophagy, 2020, Biomedicine & Pharmacotherapy
  • Ursolic acid ameliorates adipose tissue insulin resistance in aged rats via activating the Akt-glucose transporter 4 signaling pathway and inhibiting inflammation, 2021, Experimental and Therapeutic Medicine
  • Oleanolic Acid Inhibits SCD1 Gene Expression to Ameliorate Fructose-Induced Hepatosteatosis through SREBP1c-Dependent and -Independent Mechanisms, 2023, Molecular Nutrition & Food Research
  • [6-Gingerol ameliorates adipose tissue insulin resistance in aging rats]., 2022, PubMed

Their frequent publication venues include:

  • Experimental and Therapeutic Medicine
  • Biomedicine & Pharmacotherapy
  • Molecular Nutrition & Food Research
  • PubMed

Collaborations have involved several coauthors with whom Yamahara has published multiple times. These coauthors are:

  • Chunlin Yuan
  • Ling Yao
  • Jianwei Wang
  • Tongzhuang Wang
  • Ying Lai

Best Publications

  • Salacinol, potent antidiabetic principle with unique thiosugar sulfonium sulfate structure from the ayurvedic traditional medicine Salacia reticulata in Sri Lanka and India

    Masayuki Yoshikawa;Toshiyuki Murakami;Hiromi Shimada;Hisashi Matsuda

  • Anti-diabetic action of Punica granatum flower extract: activation of PPAR-gamma and identification of an active component.

    Tom H W Huang;Gang Peng;Bhavani P Kota;George Q Li

  • Punica granatum flower extract, a potent alpha-glucosidase inhibitor, improves postprandial hyperglycemia in Zucker diabetic fatty rats.

    Yuhao Li;Suping Wen;Bhavani Prasad Kota;Gang Peng

  • The inhibitory effects of mangiferin, a naturally occurring glucosylxanthone, in bowel carcinogenesis of male F344 rats.

    Naoki Yoshimi;Kengo Matsunaga;Masaki Katayama;Yasuhiro Yamada

  • Gastrointestinal motility enhancing effect of ginger and its active constituents.

    J. Yamahara;Qirong Huang;Yuhao Li;Lin Xu

  • Inhibitory effects of plumbagin and juglone on azoxymethane-induced intestinal carcinogenesis in rats

    Shigeyuki Sugie;Kiyohisa Okamoto;K.M.Wahidur Rahman;Takuji Tanaka

  • Medicinal Foodstuffs. IV. Fenugreek Seed. (1) : Structures of Trigoneosides Ia, Ib, IIa, IIb, IIIa, and IIIb, New Furostanol Saponins from the Seeds of Indian Trigonella foenum-graecum L.

    Masayuki Yoshikawa;Toshiyuki Murakami;Hajime Komatsu;Nobutoshi Murakami

  • Pomegranate flower improves cardiac lipid metabolism in a diabetic rat model: role of lowering circulating lipids.

    Tom Hsun-Wei Huang;Gang Peng;Bhavani Prasad Kota;George Qian Li

  • Antidiabetic Principles of Natural Medicines. IV. Aldose Reductase and α-Glucosidase Inhibitors from the Roots of Salacia oblonga WALL. (Celastraceae) : Structure of a New Friedelane-Type Triterpene, Kotalagenin 16-Acetate

    Hisashi Matsuda;Toshiyuki Murakami;Kenichi Yashiro;Johji Yamahara

  • Medicinal Foodstuffs. V. Moroheiya. (1) : Absolute Stereostructures of Corchoionosides A, B, and C, Histamine Release Inhibitors from the Leaves of Vietnamese Corchorus olitorius L. (Tiliaceae)

    Masayuki Yoshikawa;Hiromi Shimada;Masami Saka;Satoshi Yoshizumi

  • Antidiabetic Principles of Natural Medicines. II. Aldose Reductase and α-Glucosidase Inhibitors from Brazilian Natural Medicine, the Leaves of Myrcia multiflora DC. (Myrtacae) : Structures of Myrciacitrins I and II and Myrciaphenones A and B

    Masayuki Yoshikawa;Hiromi Shimada;Norihisa Nishida;Yuhao Li

  • THE ANTI-ULCER EFFECT IN RATS OF GINGER CONSTITUENTS

    J Yamahara;M Mochizuki;H Q Rong;H Matsuda

  • Pomegranate flower extract diminishes cardiac fibrosis in Zucker diabetic fatty rats: modulation of cardiac endothelin-1 and nuclear factor-kappaB pathways.

    Tom H W Huang;Qinglin Yang;Masaki Harada;George Q Li

  • Pomegranate flower: a unique traditional antidiabetic medicine with dual PPAR‐α/‐γ activator properties

    Yuhao Li;Yanfei Qi;Tom Hsun-Wei Huang;Johji Yamahara

  • Effects of escins Ia, Ib, IIa, and IIb from horse chestnut, the seeds of Aesculus hippocastanum L., on acute inflammation in animals

    Hisashi Matsuda;Yuhao Li;Toshiyuki Murakami;Kiyofumi Ninomiya

  • Antidiabetic Principles of Natural Medicines. III. Structure-Related Inhibitory Activity and Action Mode of Oleanolic Acid Glycosides on Hypoglycemic Activity

    Hisashi Matsuda;Yuhao Li;Toshiyuki Murakami;Narumi Matsumura

  • Salacia oblonga root improves postprandial hyperlipidemia and hepatic steatosis in Zucker diabetic fatty rats: activation of PPAR-alpha.

    Tom Hsun-Wei Huang;Gang Peng;George Qian Li;Johji Yamahara

  • A 35-day gavage safety assessment of ginger in rats.

    Xianglu Rong;Gang Peng;Takuya Suzuki;Qinglin Yang

  • Stomachic principles in ginger. III: An anti-ulcer principle, 6-gingesulfonic acid, and three monoacyldigalactosylglycerols, gingerglycolipids A, B, and C, from zingiberis rhizoma originating in Taiwan

    Masayuki Yoshikawa;Shoko Yamaguchi;Kumiko Kunimi;Hisashi Matsuda

  • Bioactive saponins and glycosides. VIII. Notoginseng (1): New dammarane-type triterpene oligoglycosides, notoginsenosides-A, -B, -C, and -D, from the dried root of Panax notoginseng (BURK.) F. H. Chen

    Masayuki Yoshikawa;Toshiyuki Murakami;Takahiro Ueno;Kenichi Yashiro

Frequent Co-Authors

Masayuki Yoshikawa
Masayuki Yoshikawa Kyoto Pharmaceutical University
Hisashi Matsuda
Hisashi Matsuda Kyoto Pharmaceutical University
Toshiyuki Murakami
Toshiyuki Murakami Kyoto Pharmaceutical University
Hiroshi Matsuda
Hiroshi Matsuda Tokyo University of Agriculture and Technology
Basil D. Roufogalis
Basil D. Roufogalis University of Sydney
Takuji Tanaka
Takuji Tanaka Gifu University
Isao Kitagawa
Isao Kitagawa Osaka University
Hideki Mori
Hideki Mori Gifu University
Robert T. Batey
Robert T. Batey University of Colorado Boulder
Osamu Tanaka
Osamu Tanaka Maruzen Pharmaceuticals Co. Ltd.

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