World's Best Scientists 2026 revealed!
Hiroshi Kobayashi

Hiroshi Kobayashi

D-Index & Metrics

Biology and Biochemistry

D-Index
68
Citations
14111
World Ranking
7918
National Ranking
536

Hiroshi Kobayashi 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 Hiroshi Kobayashi sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 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: 418 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: 197 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: 60 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 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 472 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

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

Hiroshi Kobayashi 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 Hiroshi Kobayashi sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 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: 72 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 D-Index 167+

This scientist: 68 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

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

Overview

Hiroshi Kobayashi is affiliated with Nara Medical University in Japan and has a research focus primarily within the field of Medicine. Their work emphasizes reproductive medicine and obstetrics and gynecology, with significant contributions also in molecular biology, immunology, and public health-related fields.

The scientist's publication record includes papers that address endometriosis, adenomyosis, and reproductive system disorders, often exploring the intersection of pathological conditions with clinical outcomes. Notable recent publications include:

  • Brainstem Organoids From Human Pluripotent Stem Cells (2020, Frontiers in Neuroscience)
  • Relationship between adenomyosis and endometriosis; Different phenotypes of a single disease? (2020, European Journal of Obstetrics & Gynecology and Reproductive Biology)
  • A Relationship Between Endometriosis and Obstetric Complications (2020, Reproductive Sciences)
  • A Classification Proposal for Adenomyosis Based on Magnetic Resonance Imaging (2020, Gynecologic and Obstetric Investigation)
  • Prognostic value of pre-treatment systemic immune-inflammation index in patients with endometrial cancer (2021, PLoS ONE)

Key recurring themes in Kobayashi's work involve the research and treatment of endometriosis and related reproductive system issues. The main topics addressed in the scientific output include:

  • Endometriosis Research and Treatment
  • Endometrial and Cervical Cancer Treatments
  • Uterine Myomas and Treatments
  • Reproductive System and Pregnancy
  • Ovarian cancer diagnosis and treatment
  • Reproductive Biology and Fertility
  • Pregnancy and preeclampsia studies

Kobayashi has also collaborated extensively with a number of frequent coauthors, reflecting ongoing research partnerships. These include:

  • Shogo Imanaka
  • Hiroshi Shigetomi
  • Sho Matsubara
  • Naoki Kawahara
  • Chiharu Yoshimoto

The scientist's work has been published across several journals, with multiple articles in the following venues:

  • Journal of obstetrics and gynaecology research
  • Reproductive Sciences
  • Gynecologic and Obstetric Investigation
  • International Journal of Molecular Sciences
  • World Academy of Sciences Journal

The range of topics and frequent publication in reputable specialty journals indicate a focused research trajectory in reproductive health issues, combining clinical investigation with molecular and immunological perspectives. Kobayashi's contributions add to the scientific understanding of female reproductive disorders and associated complications during pregnancy.

Best Publications

  • Cathepsin B efficiently activates the soluble and the tumor cell receptor-bound form of the proenzyme urokinase-type plasminogen activator (Pro-uPA).

    H Kobayashi;M Schmitt;L Goretzki;N Chucholowski

  • Risk of developing ovarian cancer among women with ovarian endometrioma: a cohort study in Shizuoka, Japan.

    H. Kobayashi;K. Sumimoto;N. Moniwa;M. Imai

  • A Randomized Study of Screening for Ovarian Cancer : A Multicenter Study in Japan

    H. Kobayashi;Y. Yamada;T. Sado;M. Sakata

  • Inhibition of in Vitro Ovarian Cancer Cell Invasion by Modulation of Urokinase- type Plasminogen Activator and Cathepsin B

    Hiroshi Kobayashi;Hidekazu Ohi;Motoi Sugimura;Hiromitsu Shinohara

  • Ovarian endometrioma—Risks factors of ovarian cancer development

    Hiroshi Kobayashi;Kazuhiro Sumimoto;Takashi Kitanaka;Yoshihiko Yamada

  • Serum sialyl Tn as an independent predictor of poor prognosis in patients with epithelial ovarian cancer

    H Kobayashi;T Terao;Y Kawashima

  • The role of hyaluronic acid as a mediator and regulator of cervical ripening.

    Emad El Maradny;N. Kanayama;H. Kobayashi;B. Hossain

  • Hereditary breast and ovarian cancer susceptibility genes (Review)

    Hiroshi Kobayashi;Sumire Ohno;Yoshikazu Sasaki;Miyuki Matsuura

  • Impact of urokinase-type plasminogen activator and its inhibitor type 1 on prognosis in cervical cancer of the uterus.

    Hiroshi Kobayashi;Suguru Fujishiro;Toshihiko Terao

  • Immunologic studies in presumed amniotic fluid embolism.

    Michael D Benson;Hiroshi Kobayashi;Richard K Silver;Hidekazu Oi

  • Inhibitory Effect of a Conjugate between Human Urokinase and Urinary Trypsin Inhibitor on Tumor Cell Invasion in Vitro

    Hiroshi Kobayashi;Junko Gotoh;Yasuyuki Hirashima;Michio Fujie

  • Suppressing effects of daily oral supplementation of beta-glucan extracted from Agaricus blazei Murill on spontaneous and peritoneal disseminated metastasis in mouse model

    Hiroshi Kobayashi;Ryuji Yoshida;Yasufumi Kanada;Yoichi Fukuda

  • Pathogenesis of endometriosis: the role of initial infection and subsequent sterile inflammation (Review).

    Hiroshi Kobayashi;Yumi Higashiura;Hiroshi Shigetomi;Hirotaka Kajihara

  • Effects of membrane-associated cathepsin B on the activation of receptor-bound prourokinase and subsequent invasion of reconstituted basement membranes

    Hiroshi Kobayashi;Nobuhiko Moniwa;Motoi Sugimura;Hiromitsu Shinohara

  • Hyaluronic acid-specific regulation of cytokines by human uterine fibroblasts

    Hiroshi Kobayashi;Toshihiko Terao

  • Molecular pathogenesis of endometriosis-associated clear cell carcinoma of the ovary (review).

    Hiroshi Kobayashi;Hirotaka Kajiwara;Seiji Kanayama;Yoshihiko Yamada

  • Inhibition of metastasis of Lewis lung carcinoma by a synthetic peptide within growth factor-like domain of urokinase in the experimental and spontaneous metastasis model.

    Hiroshi Kobayashi;Junko Gotoh;Michio Fujie;Hiromitsu Shinohara

  • The protease inhibitor bikunin, a novel anti-metastatic agent.

    Hiroshi Kobayashi;Mika Suzuki;Yasuyuki Hirashima;Toshihiko Terao

  • A soybean Kunitz trypsin inhibitor suppresses ovarian cancer cell invasion by blocking urokinase upregulation.

    Hiroshi Kobayashi;Mika Suzuki;Naohiro Kanayama;Toshihiko Terao

  • Clinical implications of idiopathic multicentric castleman disease among Japanese: a report of 28 cases.

    Masaru Kojima;Naoya Nakamura;Norihumi Tsukamoto;Yoshiro Otuski

Frequent Co-Authors

Toshihiko Terao
Toshihiko Terao Hamamatsu University
Masaharu Takigawa
Masaharu Takigawa Okayama University
Eleftherios P. Diamandis
Eleftherios P. Diamandis Mount Sinai Hospital
Fumitaka Kikkawa
Fumitaka Kikkawa Nagoya University
Yasuhiro Yamada
Yasuhiro Yamada University of Tokyo
Tetsuhito Kojima
Tetsuhito Kojima Nagoya University
Masafumi Tsujimoto
Masafumi Tsujimoto Gifu Pharmaceutical University
Toyoaki Murohara
Toyoaki Murohara Nagoya University
Shigeo Nakamura
Shigeo Nakamura Nagoya University
Yasuhito Tanaka
Yasuhito Tanaka Kumamoto University

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