World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
49
Citations
6721
World Ranking
18142
National Ranking
7412

Thomas R. Shearer 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 Thomas R. Shearer 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.

Thomas R. Shearer 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 Thomas R. Shearer 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: 49 D-Index — 9th percentile

9% of scientists in this discipline score the same or lower.

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

Overview

Thomas R. Shearer is affiliated with Oregon Health & Science University in the United States. Their research spans multiple fields, with a focus on Medicine and Biochemistry, Genetics, and Molecular Biology. Within these domains, their subfields of study include Ophthalmology, Cell Biology, Molecular Biology, General Dentistry, and General Health Professions.

Their scholarly output covers topics such as Retinal Diseases and Treatments, Retinal and Optic Conditions, Ocular Diseases and Behçet's Syndrome, Calpain Protease Function and Regulation, Connexins and lens biology, Endoplasmic Reticulum Stress and Disease, and Dental Research and COVID-19.

Thomas R. Shearer has coauthored several publications with recurring collaborators including Mitsuyoshi Azuma, Momoko Kobayashi-Otsugu, Kana Orihara, Emi Nakajima, and Peter Steinkamp.

Their research has been published in a variety of venues, notably:

  • PLoS ONE (2 publications)
  • Investigative Ophthalmology & Visual Science (1 publication)
  • Journal of Dental Education (1 publication)
  • PubMed (1 publication)

Notable recent papers authored or coauthored by Thomas R. Shearer include:

  • "Activation of Cytosolic Calpain, Not Caspase, Is Underlying Mechanism for Hypoxic RGC Damage in Human Retinal Explants," 2020, Investigative Ophthalmology & Visual Science
  • "Segmenting OCT for detecting drug efficacy in CRAO," 2020, PLoS ONE
  • "A descriptive analysis of predoctoral surgical requirements in US dental schools in 2020," 2021, Journal of Dental Education
  • "GCL loss in BRAO," 2023, PLoS ONE
  • "Calpain-specific breakdown fragment in human drusen," 2024, PubMed

Best Publications

  • Age-related changes in human lens crystallins identified by two- dimensional electrophoresis and mass spectrometry

    Kirsten J. Lampi;Zhixiang Ma;Stacy R.A. Hanson;Misuyoshi Azuma

  • Selenite nuclear cataract: review of the model.

    T R Shearer;H Ma;C Fukiage;M Azuma

  • Sequence Analysis of βA3, βB3, and βA4 Crystallins Completes the Identification of the Major Proteins in Young Human Lens

    Kirsten J. Lampi;Zhixiang Ma;Marjorie Shih;Thomas R. Shearer

  • Evidence that an Isoform of Calpain-10 Is a Regulator of Exocytosis in Pancreatic β-Cells

    Catriona Marshall;Graham A. Hitman;Christopher J. Partridge;Anne Clark

  • Review of selenite cataract.

    Thomas R. Shearer;Larry L. David;Ruth S. Anderson;Mitsuyoshi Azuma

  • Characterization and Expression of Calpain 10: A NOVEL UBIQUITOUS CALPAIN WITH NUCLEAR LOCALIZATION

    Hong Ma;Chiho Fukiage;Yung Hae Kim;Yung Hae Kim;Melinda K. Duncan

  • Contribution of ROCK in Contraction of Trabecular Meshwork: Proposed Mechanism for Regulating Aqueous Outflow in Monkey and Human Eyes

    Emi Nakajima;Takeshi Nakajima;Yoko Minagawa;Thomas R. Shearer

  • Sequence analysis of lens beta-crystallins suggests involvement of calpain in cataract formation.

    L L David;T R Shearer;M Shih

  • Calcium-activated proteolysis in the lens nucleus during selenite cataractogenesis.

    L L David;T R Shearer

  • Lens proteomics: analysis of rat crystallin sequences and two-dimensional electrophoresis map.

    Kirsten J. Lampi;Marjorie Shih;Yoji Ueda;Thomas R. Shearer

  • Purification of calpain II from rat lens and determination of endogenous substrates.

    Larry L. David;Thomas R. Shearer;Thomas R. Shearer

  • alpha-Crystallin chaperone activity is reduced by calpain II in vitro and in selenite cataract.

    M.J. Kelley;L.L. David;N. Iwasaki;J. Wright

  • Cloning and expression of mRNA for calpain Lp82 from rat lens: splice variant of p94.

    Hong Ma;Chiho Fukiage;Mitsuyoshi Azuma;Thomas R. Shearer

  • SJA6017, A NEWLY SYNTHESIZED PEPTIDE ALDEHYDE INHIBITOR OF CALPAIN : AMELIORATION OF CATARACT IN CULTURED RAT LENSES

    Chiho Fukiage;Mitsuyoshi Azuma;Yoshikuni Nakamura;Yoshiyuki Tamada

  • Selenite cataract: a review.

    T. R. Shearer;L. L. David;R. S. Anderson

  • Cataract and the acceleration of calpain-induced beta-crystallin insolubilization occurring during normal maturation of rat lens.

    L L David;M Azuma;T R Shearer

  • The Role of Calcium Activated Protease Calpain in Experimental Retinal Pathology

    M. Azuma;T.R. Shearer

  • Calpain II in human lens.

    Larry L. David;Michael D. Varnum;Kirsten J. Lampi;Thomas R. Shearer

  • Geographic Distribution of Selenium in Human Milk

    Thomas R. Shearer;Demetrios M. Hadjimarkos

  • Involvement of calpain isoforms in ischemia-reperfusion injury in rat retina

    Yuji Sakamoto;Takeshi Nakajima;Chiho Fukiage;Osamu Sakai

Frequent Co-Authors

Larry L. David
Larry L. David Oregon Health & Science University
Hong Ma
Hong Ma Pennsylvania State University
Hans Peter Bächinger
Hans Peter Bächinger Oregon Health & Science University
David L. Smith
David L. Smith University of Nebraska–Lincoln
Jacques S. Beckmann
Jacques S. Beckmann University of Lausanne
John A. Carver
John A. Carver Australian National University
Takashi Murachi
Takashi Murachi Kyoto University
Graham A. Hitman
Graham A. Hitman Queen Mary University of London

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