World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
58
Citations
11012
World Ranking
13280
National Ranking
928

Takashi Kojima 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 Takashi Kojima 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: 224 publications — 59th percentile

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

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

Takashi Kojima 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 Takashi Kojima 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: 58 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

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

Overview

Takashi Kojima is affiliated with Sapporo Medical University in Japan, where their research primarily focuses on molecular biology, medicine, and neuroscience. Their work intersects several subfields, including molecular biology, neurology, cancer research, pulmonary and respiratory medicine, and surgery.

Their research encompasses a range of topics such as barrier structure and function studies, cancer-related molecular mechanisms research, ferroptosis and cancer prognosis, advanced glycation end products research, Hippo pathway signaling and YAP/TAZ, connexins and lens biology, and esophageal cancer research and treatment.

Several recent papers illustrate the scope of Kojima's research interests and contributions. These include:

  • Role of tight junctions in the epithelial-to-mesenchymal transition of cancer cells, 2020, Biochimica et Biophysica Acta (BBA) - Biomembranes
  • HDAC inhibitors suppress the proliferation, migration and invasiveness of human head and neck squamous cell carcinoma cells via p63-mediated tight junction molecules and p21-mediated growth arrest, 2021, Oncology Reports
  • The Roles of Tricellular Tight Junction Protein Angulin-1/Lipolysis-Stimulated Lipoprotein Receptor (LSR) in Endometriosis and Endometrioid-Endometrial Carcinoma, 2021, Cancers
  • Serial change of neutrophil extracellular traps in tracheal aspirate of patients with acute respiratory distress syndrome: report of three cases, 2020, Journal of Intensive Care
  • HMGB1-downregulated angulin-1/LSR induces epithelial barrier disruption via claudin-2 and cellular metabolism via AMPK in airway epithelial Calu-3 cells, 2020, Biochemical and Biophysical Research Communications

Kojima frequently publishes in venues including Tissue Barriers, Cancers, Histochemistry and Cell Biology, International Journal of Molecular Sciences, and Cellular and Molecular Neurobiology.

Co-authorship is a significant aspect of Kojima's work, collaborating extensively with colleagues such as Takayuki Kohno, Takumi Konno, Shin Kikuchi, Kenichi Takano, and Yuma Shindo. These collaborations reflect a network of research efforts in related scientific domains.

Best Publications

  • Transmembrane proteins of tight junctions.

    Hideki Chiba;Makoto Osanai;Masaki Murata;Takashi Kojima

  • Tight junctions and human diseases.

    Norimasa Sawada;Masaki Murata;Keisuke Kikuchi;Makoto Osanai

  • Tight junction proteins claudin-2 and -12 are critical for vitamin D-dependent Ca2+ absorption between enterocytes.

    Hiroki Fujita;Kotaro Sugimoto;Shuichiro Inatomi;Toshihiro Maeda

  • Possible involvement of gap junctions in the barrier function of tight junctions of brain and lung endothelial cells

    Kunihiko Nagasawa;Hideki Chiba;Hiroki Fujita;Takashi Kojima

  • Differential Expression and Subcellular Localization of Claudin-7, −8, −12, −13, and −15 Along the Mouse Intestine

    Hiroki Fujita;Hideki Chiba;Hiroshi Yokozaki;Naoyuki Sakai

  • Cyclic AMP induces phosphorylation of claudin-5 immunoprecipitates and expression of claudin-5 gene in blood–brain-barrier endothelial cells via protein kinase A-dependent and -independent pathways

    Tsutomu Ishizaki;Hideki Chiba;Takashi Kojima;Masato Fujibe

  • The p53 family member genes are involved in the Notch signal pathway.

    Yasushi Sasaki;Setsuko Ishida;Ichiro Morimoto;Toshiharu Yamashita

  • Epigenetic inactivation of CHFR and sensitivity to microtubule inhibitors in gastric cancer.

    Ayumi Satoh;Minoru Toyota;Fumio Itoh;Yasushi Sasaki

  • Type-III interferon, not type-I, is the predominant interferon induced by respiratory viruses in nasal epithelial cells.

    Tamaki Okabayashi;Takashi Kojima;Tomoyuki Masaki;Shin-ichi Yokota

  • HLA-DR- and CD11c-positive dendritic cells penetrate beyond well-developed epithelial tight junctions in human nasal mucosa of allergic rhinitis.

    Ken-ichi Takano;Takashi Kojima;Mitsuru Go;Masaki Murata

  • Thr203 of claudin-1, a putative phosphorylation site for MAP kinase, is required to promote the barrier function of tight junctions.

    Masato Fujibe;Hideki Chiba;Takashi Kojima;Tamotsu Soma

  • The role of IL‐33 and its receptor ST2 in human nasal epithelium with allergic rhinitis

    R. Kamekura;T. Kojima;K. Takano;M. Go

  • Thr207 of claudin-5 is involved in size-selective loosening of the endothelial barrier by cyclic AMP

    Tamotsu Soma;Hideki Chiba;Yuko Kato-Mori;Takuro Wada

  • Regulation of Tight Junctions in Upper Airway Epithelium

    Takashi Kojima;Mitsuru Go;Ken-ichi Takano;Makoto Kurose

  • Epigenetic Silencing of Occludin Promotes Tumorigenic and Metastatic Properties of Cancer Cells via Modulations of Unique Sets of Apoptosis-Associated Genes

    Makoto Osanai;Masaki Murata;Nami Nishikiori;Hideki Chiba

  • Cx32 but not Cx26 is associated with tight junctions in primary cultures of rat hepatocytes.

    Takashi Kojima;Yasuo Kokai;Hideki Chiba;Masao Yamamoto

  • Regulation of the blood-biliary barrier: interaction between gap and tight junctions in hepatocytes.

    Takashi Kojima;Toshinobu Yamamoto;Masaki Murata;Hideki Chiba

  • Cellular retinoic acid bioavailability determines epithelial integrity: Role of retinoic acid receptor alpha agonists in colitis.

    Makoto Osanai;Nami Nishikiori;Masaki Murata;Hideki Chiba

  • Growth and Maturation of Small Hepatocytes Isolated from Adult Rat Liver

    T. Mitaka;T. Kojima;T. Mizuguchi;Y. Mochizuki

  • Hepatocyte nuclear factor (HNF)-4α triggers formation of functional tight junctions and establishment of polarized epithelial morphology in F9 embryonal carcinoma cells

    Hideki Chiba;Tomoko Gotoh;Takashi Kojima;Seiro Satohisa

Frequent Co-Authors

Norimasa Sawada
Norimasa Sawada Sapporo Medical University
Hideki Chiba
Hideki Chiba Fukushima Medical University
Koichi Hirata
Koichi Hirata Sapporo Medical University
David C. Spray
David C. Spray Albert Einstein College of Medicine
Nobuhiro Fujii
Nobuhiro Fujii Sapporo Medical University
Noriyuki Sato
Noriyuki Sato Sapporo Medical University
Takashi Tokino
Takashi Tokino Sapporo Medical University
Yoshio Kuroki
Yoshio Kuroki Sapporo Medical University
Kohzoh Imai
Kohzoh Imai University of Tokyo
Hiroshi Yokozaki
Hiroshi Yokozaki Kobe University

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